CN110332328A - Leakage auto-cutout guard method during natural gas transportation - Google Patents
Leakage auto-cutout guard method during natural gas transportation Download PDFInfo
- Publication number
- CN110332328A CN110332328A CN201910598204.2A CN201910598204A CN110332328A CN 110332328 A CN110332328 A CN 110332328A CN 201910598204 A CN201910598204 A CN 201910598204A CN 110332328 A CN110332328 A CN 110332328A
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- Prior art keywords
- spool
- natural gas
- main valve
- valve
- mounting cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/065—Construction of housing; Use of materials therefor of taps or cocks with cylindrical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/46—Mechanical actuating means for remote operation
- F16K31/465—Mechanical actuating means for remote operation by flexible transmission means, e.g. cable, chain, bowden wire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0442—Spindles and actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The present invention provides the leakage auto-cutout guard method during natural gas transportation, step is: firstly, opening main valve, natural air-air source successively will be delivered to consumption equipment by main valve, conveyance conduit, trigger device；Then, in step 1, the conveying of natural gas is if desired cut off, main valve is switched to closed state manually by user, if desired restores the conveying of natural gas, and main valve is switched to opening state manually by user；Then, conveyance conduit natural gas air pressure detects in testing agency, if natural gas leaking occurs for conveyance conduit, sliding component will automatically switch to sealing state, and pressure piping is connected with the output end for docking pipeline, and pressure piping restores normal pressure；Position-limit mechanism is pulled finally, thread drawing mechanism will be inspired after pressure piping release, position-limit mechanism is made to release the rotational restraint to spool, clockwork spring will drive valve core rotation to disconnect valve inner, and main valve automatically switches to closed state.
Description
Technical field
The present invention relates to a kind of natural gas line conveying technology fields, and in particular to the leakage during natural gas transportation is certainly
The guard method of dynamic circuit breaker road.
Background technique
Natural gas, petroleum, coal and the referred to as big energy in the world three, are valuable sources for the survival of mankind, wherein naturally
Gas is widely used, for example, the application of industrial fuel, replaces coal with natural gas, is used for factory's heating, pot is used in production
Furnace and steam power plant's gas turbine boiler etc.；Application in technique production, such as baking vanish production line, tobacco leaf drying, pitch heating
Heat preservation etc.；Application in chemical engineering industry, natural gas are the optimum feed stocks for manufacturing nitrogenous fertilizer, less with small investment, at low cost, pollution etc.
Feature, natural gas account for the specific gravity of nitrogen fertilizer production raw material, world's average out to 80% or so；Gas cause, especially resident living
With fuel, the pipeline of natural gas is its common one of types of transportation, in order to promoted natural gas line conveying safety,
Convenience, the present inventor design a kind of clever structure, principle it is simple, convenient for the natural gas line conveying operated with leakage from
The guard method of dynamic circuit breaker road.
Summary of the invention
To solve the deficiencies in the prior art, the object of the present invention is to provide a kind of clever structure, principles simply, convenient for operation
The leakage auto-cutout guard method of the natural gas line conveying used.
To realize the above-mentioned technical purpose, the technical solution adopted in the present invention is as follows.
Leakage auto-cutout guard method during natural gas transportation, step are:
(1) delivery phase is docked；
S1: user the input terminal of main valve is connect with natural air-air source connection and by the output end of trigger device and consumption equipment
Connection is connected, and main valve is switched to opening state, natural air-air source will successively pass through main valve, conveyance conduit, trigger device conveying
To consumption equipment；
Main valve is set between the input terminal of conveyance conduit and natural air-air source and the input terminal of main valve and natural air-air source connect
The input terminal of connection, the output end of main valve and input channel, which connects, to be connected, and main valve is arranged to the open shape that can mutually switch to
State and closed state, trigger device be set to conveyance conduit output end and consumption equipment between and the input terminal of trigger device with
The output end connection connection of conveyance conduit, the output end of trigger device connect connection with consumption equipment；
S2: during S1, if desired cutting off the conveying of natural gas, and main valve is switched to closed state manually by user, if needing
Restore the conveying of natural gas, main valve is switched to opening state manually by user；
The main valve includes valve body, spool, knob and position-limit mechanism, and valve core rotation is set in valve body and in application valve body
The on-off in portion is provided with the clockwork spring for disconnecting valve body for driving spool voluntarily to rotate, clockwork spring set between the spool and valve body
It is connected to the outside of spool and one end is fixedly connected with spool, the other end is fixedly connected with the inner wall of valve body, the elastic force of clockwork spring begins
Driving valve core rotation disconnects valve body eventually, and position-limit mechanism is used to overcome the elastic force of clockwork spring to act on the rotation for constraining spool, and knob is used
In rotating synchronously/be used for the constraint for releasing position-limit mechanism to spool with movable valve plug；
Main valve in use, under normal circumstances, is if desired switched to closed state, user presses down on knob by main valve
And constraint of the position-limit mechanism to spool is released, under the elastic force effect of clockwork spring, spool will be 90 degree around own axis, make
Valve inner disconnects, and main valve switches to closed state, main valve is if desired switched to opening state, and user overcomes the elastic force of clockwork spring
Effect turning knob rotates backward 90 degree, and valve inner is connected, meanwhile, position-limit mechanism restores the constraint to spool, main valve
Switch to opening state；
(2) the protection stage is revealed；
S3: conveyance conduit natural gas air pressure detects in testing agency, if natural gas leaking, sliding component occur for conveyance conduit
Sealing state will be automatically switched to, pressure piping is connected with the output end for docking pipeline, and pressure piping restores normal pressure；
The testing agency includes that docking pipeline, being set between conveyance conduit output end and consumption equipment is connected in connection
On docking pipeline periphery and it is connected thereto the vertical pressure piping of connection and is movably set in the sliding docked in pipeline
Component, pressure piping closing arrangement and its it is internal be filled with high pressure gas, pressure piping with dock pipeline be arranged vertically and
Circle is formd at the connection connection of the two to interface, sliding component is arranged to the on state that can mutually switch and seal shape
State, sliding component itself conducting under on state and being formed to docking mouth block, the sliding component itself under sealing state
It seals and releases to the closure to interface；
It is provided with high pressure gas holder connected to it at the top of the pressure piping, is installed between high pressure gas holder and pressure piping useful
The air gauge for detecting its air pressure inside is set in the switch valve of both control on-off, on the pressure piping；
It is coaxially fixedly installed on the inner headed face of annular convex platform one, output end on the inner headed face of the docking pipeline input terminal coaxial
It is fixedly installed annular convex platform two, the plug screw coaxially arranged is movably set on the inner headed face of boss one, plug screw is along it
It axially penetrates through and plug screw with boss one is threadedly coupled cooperation between the two, sliding component is movably set in boss one and boss two
Between, the sliding component includes the hollow sliding barrel being coaxially movably set on docking pipeline inner headed face, sliding cylinder
Body close to the arrangement closed at one end of boss one, close to the arrangement open at one end of boss two, sliding barrel periphery with dock pipeline inner circle
The sealed cooperation that is slidably connected is constituted between face, detection spring is provided in sliding barrel, and detection spring one end is supported with boss two
Touching, the other end and sliding barrel closed end contradict and the elastic force of detection spring is directed toward sliding barrel, sealing by boss two always
The closed end of sliding barrel under state contradicts and releases with boss one and blocks to interface, the sliding under on state
The open end of cylinder contradicts with boss two and blocks to interface；
Offer coaxially arranged annular dredging slot on the inner headed face of the docking pipeline, annular dredging slot position in interface with it is convex
Between platform one, the sliding barrel coaxially offers annular groove, the slot of annular dredging slot on the periphery of its closed end
It is wider than the groove width of annular groove, the butt hole with sliding barrel internal switching is offered on annular groove, butt hole is provided with
It is several and where the sliding barrel circumferencial direction array arrangement, annular groove and annular dredge slot and align under on state；
During the work time, when conveyance conduit normally conveys natural gas, the pressure of natural gas will overcome detection spring for testing agency
Elastic force effect make sliding barrel along docking pipeline towards boss two slide, detection spring gradually reduce and elastic potential energy increase
Greatly, until slide cartridge cylinder and boss two contradict, annular groove will align with annular dredging slot, the switching-on shape of sliding component
State and sliding barrel form docking mouth and block, at this point, user's control high pressure gas holder is towards being filled with high pressure gas in pressure piping
Body, hereafter, natural gas will be delivered to consumption equipment by conveyance conduit, docking pipeline, if natural gas leaking occurs for conveyance conduit
Situation, the pressure of natural gas will reduce in conveyance conduit, and the elastic potential energy of detection spring will discharge and push sliding barrel edge
Docking pipeline towards boss one slide until with boss one contradict, annular groove and annular dredge slot will be staggered, sliding component
Sealing state and sliding barrel is switched to release to the closure to interface, at this point, pressure piping by with the output of docking pipeline
Termination is led to and the high pressure gas in pressure piping will be discharged and revert to standard pressure；
S4: will inspire thread drawing mechanism and pull to position-limit mechanism after pressure piping release, release position-limit mechanism to spool
Rotational restraint, clockwork spring will drive valve core rotation to disconnect valve inner, and main valve automatically switches to closed state；
Be coaxially arranged on the periphery of the pressure piping connected with it and both ends open arrangement mounting cylinder two, mounting cylinder
Two are parallel to the axial direction of docking pipeline and mounting cylinder two arranges that thread drawing mechanism is set on mounting cylinder two and prolongs close to main valve
It stretches in mandril to be connected, the thread drawing mechanism includes the connecting cylinder coaxially arranged with mounting cylinder two, and connecting cylinder is located at mounting cylinder
Two deviate from pressure piping one end, connecting cylinder close to mounting cylinder two it is open at one end arrangement, deviate from the arrangement closed at one end of mounting cylinder two, peace
Fitted tube two and to be coaxially arranged between connect cylinder for connect connect both hollow attachment cap, inner headed face diameter of attachment cap etc.
In two inner headed face of mounting cylinder diameter and be greater than the diameter of connecting cylinder inner headed face, be provided with along its axial direction in the mounting cylinder two
Slidable piston, piston and mounting cylinder two constitute sealed slide-and-guide and cooperate, and are provided in the connecting cylinder along its axial direction
Slidable pull rod, piston are fixedly connected with pull rod, and pull rod, which deviates from, to be provided with for connecting the two between piston one end and mandril
And the drawstring of tight arrangement；
The external activity of the pull rod is socketed with triggering spring, and triggering spring one end is contradicted with piston, the other end and attachment cap support
It touches and the elastic force for triggering spring pushes piston to slide close to pressure piping always；
Main valve is to restore standard atmospheric pressure inside pressure piping and will release to the compression of piston during being automatically closed,
The elastic potential energy of triggering spring will discharge and piston driven to slide along mounting cylinder two close to pressure piping, and piston will drive and draw
Bar moves synchronously, and pull rod will drive drawstring to move synchronously and pull to mandril, and mandril will overcome the elastic force of holddown spring
Effect slides in and out, and separates fixture block mutually along the radial outward movement of floating ring and with card slot, and fixture block is released to floating ring
Rotational restraint, at this point, clockwork spring by drive valve core rotation disconnect valve inner, main valve automatically switches to closed state.
Further optimize or improve as this programme.
The valve body is arranged to columnar hollow and upper end opening arrangement tube structure, is provided at the upper end opening of valve body
The circular seal lid for being tightly connected cooperation is constituted with it, is radially provided on the periphery of valve body defeated with its internal switching
Enter connector and out splice going splice, input adapter and out splice going splice are arranged along the axisymmetrical of valve body, the connection of input adapter and valve body
Place constitutes and constitutes delivery outlet, the input adapter and natural air-air source at the connection of input port, out splice going splice and valve body
Connection is connected and the connection of the input terminal of out splice going splice and conveyance conduit is connected.
Further optimize or improve as this programme.
The spool is arranged to the column structure to match with valve body inner headed face, the inner headed face composition turn of spool and valve body
Dynamic formula is tightly connected cooperation, offers on spool radially through the intercommunicating pore of arrangement, intercommunicating pore and input port, delivery outlet phase
Adaptation, the knob is located at the top of sealing cover and the two is coaxially arranged, and the lower end surface of knob is coaxially fixedly installed opening
The fixes sleeve arranged downwards, fixes sleeve activity passes through the top that sealing cover is socketed on spool, between fixes sleeve and spool
Spline connection cooperates and fixes sleeve can be along the axially downwardly sliding of spool；
The outer, coaxial fixing sleeve of the spool is equipped with fixed ring, coaxial movable sleeve is equipped with floating ring, and fixed ring is located at fixing sleeve
Cylinder intercommunicating pore between, floating ring is located at the top of fixed ring, between floating ring and spool constitute feather key connection cooperate and can
It is slided up and down along spool, the external activity of spool is arranged with floating spring, floating spring one end and fixed ring conflict, the other end
It is contradicted with floating ring and the elastic force of floating spring is directed toward floating ring by fixed ring always, floating ring is always and under fixes sleeve
Hold it is inconsistent, offered on the periphery of the floating ring up and down perforative card slot.
Further optimize or improve as this programme.
The valve body is fixedly installed the mounting cylinder one radially arranged on the periphery of the upper end opening, peace
One both ends open of fitted tube and with valve body connect, the axial direction for being axially parallel to conveyance conduit of mounting cylinder one and its close to triggering
Device arrangement, position-limit mechanism are socketed on mounting cylinder one and extend and be plugged in card slot, and position-limit mechanism includes coaxial fixing sleeve
The butt muff being connected on mounting cylinder one, butt muff close to one one end of mounting cylinder is open end, the other end is closed end, docking
Mandril is coaxially movably set in sleeve and the closed end of mandril and butt muff constitutes slide-and-guide cooperation, and mandril one end is prolonged
Extend to the outside of butt muff, the other end passes through that mounting cylinder one extends in valve body and the end is coaxially fixedly installed rotary table,
Rotary table can be slided along the inner headed face of mounting cylinder one, and rotary table is provided with pointed and initial shape away from one end face of mandril
The fixture block being actively plugged in card slot under state, the external activity of the mandril are socketed with holddown spring, holddown spring one end and circle
Platform conflict, the other end and butt muff closed end contradict and the elastic force of holddown spring is directed toward by the closed end of butt muff always
Rotary table.
The beneficial effect of the present invention compared with prior art be clever structure, principle it is simple, convenient for operating with, produce
It is low in cost, it uses and arranges a main valve, in one triggering of output end arrangement of conveyance conduit in the input terminal of conveyance conduit
Device, when trigger device detects that natural gas leaking occurs for conveyance conduit and its internal pressure reduces, trigger device will make always
Valve automatically switches to closed state, cuts off the connection of natural air-air source and conveyance conduit, meanwhile, in normal use, main valve can
Manually rotating control by user, it is opened or closed, and improves the safety of natural gas short distance conveying.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is overall structure diagram of the invention.
Fig. 3 is overall structure diagram of the invention.
Fig. 4 is the structural schematic diagram of main valve.
Fig. 5 is the schematic diagram of internal structure of main valve.
Fig. 6 is the cross-sectional view of valve body.
Fig. 7 is the connection figure of spool and knob.
Fig. 8 is the cooperation figure of spool and knob.
Fig. 9 is the cooperation figure of position-limit mechanism and spool.
Figure 10 is the cooperation figure of position-limit mechanism and floating ring.
Figure 11 is the cross-sectional view of position-limit mechanism.
Figure 12 is the structural schematic diagram of trigger device.
Figure 13 is the partial structural diagram of trigger device.
Figure 14 is the partial structural diagram of testing agency.
Figure 15 is the partial structural diagram of testing agency.
Figure 16 is sliding component on state and the cooperation figure that docks pipeline.
Figure 17 is sliding component sealing state and the cooperation figure that docks pipeline.
Figure 18 is the schematic diagram of internal structure for docking pipeline.
Figure 19 is the structural schematic diagram of sliding component.
Figure 20 is the schematic diagram of internal structure of thread drawing mechanism.
Specific embodiment
Leakage auto-cutout guard method during natural gas transportation, step are:
(1) delivery phase is docked；
S1: user the input terminal of main valve 100 is connect with natural air-air source connection and by the output end of trigger device 300 with disappear
It consumes equipment connection to connect, main valve 100 is switched into opening state, natural air-air source will successively pass through main valve 100, conveyance conduit
200, trigger device 400 is delivered to consumption equipment；
Main valve 100 is set between the input terminal and natural air-air source of conveyance conduit 200 and the input terminal of main valve 100 and natural
The connection of gas gas source is connected, the output end of main valve 100 connect connection with the input terminal of input channel 200, and main valve 100 is arranged to can phase
The opening state and closed state mutually switched to, trigger device 300 be set to conveyance conduit 200 output end and consumption equipment it
Between and trigger device 300 input terminal connect with the output end of conveyance conduit 200 connection, trigger device 300 output end with disappear
Equipment connection is consumed to connect；
S2: during S1, if desired cutting off the conveying of natural gas, and main valve 100 is switched to closed state manually by user, if
Need to restore the conveying of natural gas, main valve 100 is switched to opening state manually by user；
The main valve 100 includes valve body 110, spool 120, knob 130 and position-limit mechanism 150, and spool 120 is rotatably dispose in valve
On-off in body 110 and inside application valve body 110, is provided between the spool 120 and valve body 110 for driving spool
120 clockwork springs 140 that voluntarily rotation disconnects valve body 110, clockwork spring 140 are socketed on the outside of spool 120 and one end and spool 120
Be fixedly connected, the other end is fixedly connected with the inner wall of valve body 110, the elastic force of clockwork spring 140 drive always spool 120 rotation make valve body
110 disconnect, and position-limit mechanism 150 is used to overcome the elastic force of clockwork spring 140 to act on the rotation of constraint spool 120, and knob 130 is for driving
Spool 120, which is rotated synchronously/is used for, releases constraint of the position-limit mechanism 150 to spool 120；
Main valve 100 in use, under normal circumstances, is if desired switched to closed state by main valve 100, and user is by knob
130 press down on and release constraint of the position-limit mechanism 150 to spool 120, and under the elastic force effect of clockwork spring 140, spool 120 will
Around 90 degree of own axis, make to disconnect inside valve body 110, main valve 100 switches to closed state, if desired by main valve 100
Opening state is switched to, user overcomes the elastic force effect turning knob 130 of clockwork spring 140 to rotate backward 90 degree, makes in valve body 110
Portion's conducting, meanwhile, position-limit mechanism 150 restores the constraint to spool 120, and main valve 100 switches to opening state；
(2) the protection stage is revealed；
S3: 200 natural gas air pressure of conveyance conduit detects in testing agency, sliding if natural gas leaking occurs for conveyance conduit 200
Dynamic component 330 will automatically switch to sealing state, and pressure piping 320 is connected with the output end for docking pipeline 310, pressure piping
320 restore normal pressure；
The testing agency include connection connect in 200 output end of conveyance conduit and consumption equipment between dock pipeline 310,
It is set on docking 310 periphery of pipeline and is connected thereto the vertical pressure piping 320 of connection and is movably set in docking
Sliding component 330 in pipeline 310, the closing of pressure piping 320 arrangement and its inside are filled with high pressure gas, pressure piping
320 with dock pipeline 3210 and be arranged vertically and form round to interface at the connection connection of the two, sliding component 330 is arranged
At the on state and sealing state that can mutually switch, the sliding component 330 itself under on state is connected and to interface
Closure is formed, 330 self seal of sliding component and releasing under sealing state are to the closure to interface；
The top of the pressure piping 320 is provided with high pressure gas holder 350 connected to it, high pressure gas holder 350 and pressure piping 320
Between switch valve 351 for both controlling on-off is installed, be set on the pressure piping 320 for detecting its internal gas
The air gauge 352 of pressure；
The inner headed face of annular convex platform 1, output end is coaxially fixedly installed on the inner headed face of docking 310 input terminal of pipeline
On be coaxially fixedly installed annular convex platform 2 312, the plug screw coaxially arranged is movably set on the inner headed face of boss 1
313, plug screw 313 along it along axially penetrating through and plug screw 313 with boss 1 is threadedly coupled cooperation, sliding component between the two
330 are movably set between boss 1 and boss 2 312, and the sliding component 330 includes coaxially being movably set in pair
Hollow sliding barrel 331 on 310 inner headed face of adapter tube road, sliding barrel 331 close to boss 1 it is closed at one end arrangement, it is close
The arrangement open at one end of boss 2 312,331 periphery of sliding barrel constitute sealed sliding between 310 inner headed face of pipeline with docking
Connection cooperates, and detection spring 332,332 one end of detection spring and the conflict of boss 2 312, the other end are provided in sliding barrel 331
It is contradicted with 331 closed end of sliding barrel and the elastic force of detection spring 332 is directed toward sliding barrel 331 by boss 2 312 always, it is close
The closed end of sliding barrel 331 under envelope state contradicts and releases with boss 1 and blocks to interface, on state
Under open end and the boss 2 312 of sliding barrel 331 contradict and blocked to interface；
Coaxially arranged annular dredging slot 314 is offered on the inner headed face of the docking pipeline 310, annular dredging slot 314 is located at
To between interface and boss 1, the sliding barrel 331 coaxially offers annular groove on the periphery of its closed end
333, the groove width of annular dredging slot 314 is greater than the groove width of annular groove 333, offers and sliding barrel 331 on annular groove 242
The butt hole 334 of internal switching, butt hole 334 are provided with several and arrange along 331 place circumferencial direction array of sliding barrel,
Annular groove 333 aligns with annular dredging slot 314 under on state；
During the work time, when conveyance conduit 200 normally conveys natural gas, the pressure of natural gas will overcome detection bullet for testing agency
The elastic force effect of spring 332 slides sliding barrel 331 towards boss 2 312 along docking pipeline 310, and detection spring 332 is gradually
It compresses and elastic potential energy increases, until slide cartridge cylinder 331 and boss 2 312 contradict, annular groove 333 will dredge slot with annular
314 align, and 331 pairs of docking mouths of the switching-on state of sliding component 330 and sliding barrel, which are formed, to be blocked, at this point, user
Control high pressure gas holder 350 is towards high pressure gas is filled in pressure piping 320, and hereafter, natural gas will be by conveyance conduit 200, docking
Pipeline 310 is delivered to consumption equipment, if conveyance conduit 200 there is a situation where natural gas leaking, natural gas in conveyance conduit 200
Pressure will reduce, and the elastic potential energy of detection spring 332 will discharge and push sliding barrel 331 along docking 310 direction of pipeline
The sliding of boss 1 with boss 1 until contradict, and annular groove 333 will be staggered with annular dredging slot 314, sliding component 330
Sealing state and sliding barrel 331 is switched to release to the closure to interface, at this point, pressure piping 320 will with dock pipeline
310 output end is connected and the high pressure gas in pressure piping 320 will be discharged and revert to standard pressure；
S4: thread drawing mechanism 340 will be inspired after 320 release of pressure piping, position-limit mechanism 150 will be pulled, and make position-limit mechanism 150
The rotational restraint to spool 120 is released, clockwork spring 140 will drive the rotation of spool 120 to make to disconnect inside valve body 110, and main valve 100 is automatic
Switch to closed state；
Be coaxially arranged on the periphery of the pressure piping 320 connected with it and both ends open arrangement mounting cylinder 2 321,
Mounting cylinder 2 321 is parallel to the axial direction of docking pipeline 310 and mounting cylinder 2 321 is arranged close to main valve 100, thread drawing mechanism 340
It is set on mounting cylinder 2 321 and extends mandril 152 and be connected, the thread drawing mechanism 340 includes and mounting cylinder 2 321
Coaxially arranged connecting cylinder 342, connecting cylinder 342 are located at mounting cylinder 2 321 away from 320 one end of pressure piping, and connecting cylinder 342 is close
Mounting cylinder 2 321 it is open at one end arrangement, deviate from the arrangement closed at one end of mounting cylinder 2 321, mounting cylinder 2 321 with to connect cylinder 342 it
Between be coaxially arranged with for connecting the hollow attachment cap 350 both connected, the inner headed face diameter of attachment cap 350 is equal to mounting cylinder two
The diameter of 321 inner headed faces and the diameter for being greater than 342 inner headed face of connecting cylinder, are provided with along its axial direction in the mounting cylinder 2 321
Slidable piston 343, piston 343 and mounting cylinder 2 321 constitute sealed slide-and-guide and cooperate, and set in the connecting cylinder 342
Be equipped with along its axially slidable pull rod 344, piston 343 is fixedly connected with pull rod 344, pull rod 344 away from 343 one end of piston with
The drawstring 346 for connecting the two and tight arrangement is provided between mandril 152；
The external activity of the pull rod 344 is socketed with triggering spring 345, and triggering 345 one end of spring contradicts with piston 343, is another
Hold the elastic force that spring 345 is contradicted and triggered with attachment cap 341 that piston 343 is pushed to slide close to pressure piping 320 always；
Main valve 100 is to restore standard atmospheric pressure inside pressure piping 320 and to the pressure of piston 343 during being automatically closed
It will tightly release, the elastic potential energy of triggering spring 345 will discharge and drive piston 343 along mounting cylinder 2 321 close to high-voltage tube
Road 321 slides, and piston 343 will drive pull rod 344 to move synchronously, and pull rod 344 will drive drawstring 346 to move synchronously and to mandril
152 are pulled, and mandril 152 slides in and out the elastic force for overcoming holddown spring 155 effect, make fixture block 154 along floating ring 123
Radial outward movement and separated with 125 phase of card slot, fixture block 154 is released to the rotational restraint of floating ring 123, at this point, clockwork spring
The driving rotation of spool 120 is made to disconnect inside valve body 110 by 140, and main valve 100 automatically switches to closed state.
Applied to natural gas short distance conveying gas leakage auto-cutout equipment comprising main valve 100, conveyance conduit 200 with
And trigger device 300, main valve 100 be set between the input terminal and natural air-air source of conveyance conduit 200 and main valve 100 it is defeated
Enter that end connect connection with natural air-air source, the output end of main valve 100 connect connection, main valve 100 with the input terminal of input channel 200
Be arranged to the opening state that can mutually switch to and closed state, trigger device 300 be set to the output end of conveyance conduit 200 with
Between consumption equipment and the input terminal of trigger device 300 connect with the output end of conveyance conduit 200 connection, trigger device 300
Output end connect connection with consumption equipment, and trigger device 300 is for detecting the natural gas air pressure in conveyance conduit 200 and promoting
100 automatic trigger of main valve switches to closed state.
Specifically, in order to detect the natural gas air pressure in conveyance conduit 200, when natural gas gas in conveyance conduit 200
When pressure drop is low, main valve 100 can be promoted to automatically switch to closed state, the trigger device 300 includes testing agency and draws
Line mechanism 340, testing agency are used to detect the natural gas air pressure in conveyance conduit 200, and thread drawing mechanism 340 is for pulling main valve
100 automatic triggers switch to closed state.
User connect with natural air-air source connection and in use, by the input terminal of main valve 100 by trigger device
300 output end connect connection with consumption equipment, main valve 100 is switched to opening state, natural air-air source will be successively by total
Valve 100, conveyance conduit 200, trigger device 400 are delivered to consumption equipment, at this point, if letting out for natural gas occurs for conveyance conduit 200
Reveal, the gas pressure in conveyance conduit 200 will reduce, and testing agency detects that the gas pressure in conveyance conduit 200 subtracts
Small and thread drawing mechanism 340 is promoted to carry out pulling closing to main valve 100, main valve 100 automatically switches to closed state and cuts off
Connection between natural air-air source and conveyance conduit 200, natural air-air source stop the further gas supply to conveyance conduit 200.
Main valve 100 during the work time, is divided into two kinds of situations, and one is under normal condition, and user can be by manually controlling
Switching of the main valve 100 between opening state and closed state, secondly thread drawing mechanism 340 pulls under natural gas leakage state
Main valve 100 switches to closed state by opening state automatically, for this purpose, the main valve 100 includes valve body 110, spool 120, knob
130 and position-limit mechanism 150, spool 120 is rotatably dispose in the on-off in valve body 110 and inside application valve body 110, in order to
Enough making spool 120, rotation disconnects valve body 110 automatically, is provided between the spool 120 and valve body 110 for driving spool
120 clockwork springs 140 that voluntarily rotation disconnects valve body 110, clockwork spring 140 are socketed on the outside of spool 120 and one end and spool 120
Be fixedly connected, the other end is fixedly connected with the inner wall of valve body 110, the elastic force of clockwork spring 140 drive always spool 120 rotation make valve body
110 disconnect, and position-limit mechanism 150 is used to overcome the elastic force of clockwork spring 140 to act on the rotation of constraint spool 120, and knob 130 is for driving
Spool 120, which is rotated synchronously/is used for, releases constraint of the position-limit mechanism 150 to spool 120.
Main valve 100 in use, under normal circumstances, is if desired switched to closed state, user will revolve by main valve 100
Button 130 presses down on and releases constraint of the position-limit mechanism 150 to spool 120, under the elastic force effect of clockwork spring 140, spool 120
Will be 90 degree around own axis, make to disconnect inside valve body 110, main valve 100 switches to closed state, if desired by main valve
100 switch to opening state, and user overcomes the elastic force effect turning knob 130 of clockwork spring 140 to rotate backward 90 degree, makes valve body
110 inside conductings, meanwhile, position-limit mechanism 150 restores the constraint to spool 120, and main valve 100 switches to opening state；Natural gas
Under leak case, thread drawing mechanism 340 will automatically be pulled position-limit mechanism 150, release position-limit mechanism 150 to spool 120
Constraint, the elastic potential energy of clockwork spring 140 discharges and spool 120 driven to rotate, make to disconnect inside valve body 110, and main valve 100 is automatic
Switch to closed state.
The valve body 110 is arranged to columnar hollow and upper end opening arrangement tube structure, at the upper end opening of valve body 110
Be provided with the circular seal lid 116 for constituting with it and being tightly connected cooperation, be radially provided on the periphery of valve body 110 and its
The axis pair of the input adapter 112 and out splice going splice 113 of internal switching, input adapter 112 and out splice going splice 113 along valve body 110
Claim arrangement, constitutes the connection of input port 114, out splice going splice 113 and valve body 110 at the connection of input adapter 112 and valve body 110
Place constitutes delivery outlet 115, and input adapter 112 connect connection, out splice going splice 113 and conveyance conduit 200 with natural air-air source
Input terminal connection is connected, and by making the connection between input port 114 and delivery outlet 115, makes to be connected inside valve body 110, by right
Input port 114 is blocked with delivery outlet 115, makes to disconnect inside valve body 110.
The spool 120 is arranged to the column structure to match with 110 inner headed face of valve body, spool 120 and valve body 110
Inner headed face constitutes rotary type and is tightly connected cooperation, offers on spool 120 radially through the intercommunicating pore 121 of arrangement, connection
Hole 121 is adapted with input port 114, delivery outlet 115, and for the ease of the rotation control to spool 120, the knob 130 is located at
The top of sealing cover 116 and the two is coaxially arranged, arrangement that the lower end surface of knob 130 is coaxially fixedly installed that Open Side Down are consolidated
Determine sleeve, fixes sleeve activity passes through the top that sealing cover 116 is socketed on spool 120, spline between fixes sleeve and spool 120
Connection cooperates and fixes sleeve can take the meaning of this programme to be along the axially downwardly sliding of spool 120, on the one hand turns
Dynamic knob 130 is able to drive the rotation of spool 120, on the other hand pushes that can to release position-limit mechanism 140 right to knob 130
The rotational restraint of spool 120.
It is constrained in order to the rotation to spool 120, the outer, coaxial fixing sleeve of the spool 120 is equipped with fixed ring
122, coaxial movable sleeve is equipped with floating ring 123, and fixed ring 122 is between fixes sleeve and intercommunicating pore 121, and floating ring 123
In the top of fixed ring 122, between floating ring 123 and spool 120 constitute feather key connection cooperation and can be along about 120 spool
Sliding, the external activity of spool 120 are arranged with floating spring 124,124 one end of floating spring and the conflict of fixed ring 122, the other end
It is contradicted with floating ring 123 and the elastic force of floating spring 124 is directed toward floating ring 123 by fixed ring 122 always, floating ring 123 begins
It is inconsistent with the lower end of fixes sleeve eventually, perforative card slot 125 up and down, limit are offered on the periphery of the floating ring 123
Mechanism 150 constrains the rotation of floating ring 123 by being plugged in card slot 125, so that the rotation to spool 120 carries out about
Beam, by overcoming floating ring 123, the elastic force of floating spring 124 acts on slide downward and position-limit mechanism 150 is detached from, to release
To the rotational restraint of spool 120.
Specifically, the valve body 110 is fixedly installed on the periphery of the upper end opening and radially arranges
Mounting cylinder 1, one 117 both ends open of mounting cylinder and is connected with valve body 110, and mounting cylinder 1 is axially parallel to conveying
The axial direction of pipeline 200 and its close to trigger device 300 arrange that position-limit mechanism 150 is socketed on mounting cylinder 1 and extends
It is plugged in card slot 125, position-limit mechanism 150 includes the butt muff 151 being coaxially fixedly sheathed on mounting cylinder 1, docking
Sleeve 151 close to one 117 one end of mounting cylinder is open end, the other end is closed end, is coaxially movably set in butt muff 151
The closed end of mandril 152 and mandril 152 and butt muff 151 constitutes slide-and-guide cooperation, and 152 one end of mandril extends to docking
The outside of sleeve 151, the other end extends in valve body 110 across mounting cylinder 1 and the end is coaxially fixedly installed rotary table
153, rotary table 153 can be slided along the inner headed face of mounting cylinder 1, and rotary table 153 is provided with away from 152 1 end face of mandril is in
The fixture block 154 being actively plugged under tip shape and original state in card slot 125, in order to which fixture block 154 is pressed in card slot 125
It is interior, realize the constraint to floating ring 123, the external activity of the mandril 152 is socketed with holddown spring 155, holddown spring 155 1
End is contradicted with rotary table 153, the other end is contradicted with 151 closed end of butt muff and the elastic force of holddown spring 155 is always by docking
It is directed toward rotary table 153 in the closed end of sleeve 151.
Main valve 100 during the work time, under normal circumstances, is if desired switched to closed state, user is manual by main valve 100
Pressing knob 130 slides straight down along spool 120, and the elastic force for overcoming floating spring 124 effect is made floating ring by knob 130
123 synchronous slide downwards, floating spring 124 gradually reduces and elastic potential energy increases, and floating ring 123 will slide into fixture block 154
Lower section, be mutually disengaged fixture block 154 with card slot 125, fixture block 154 is released to the rotational restraint of floating ring 123, at this point, clockwork spring
140 elastic potential energy gradually discharges and drives spool 120 around 90 degree of own axis, makes intercommunicating pore 121 and input port
114, delivery outlet 115 deviates and spool 120 blocks input port 114, delivery outlet 115, disconnects inside valve body 110, always
Valve 100 switches to closed state；If desired main valve 100 is switched into opening state, under user overcomes the elastic force of clockwork spring 140 to act on
Knob 130 is rotated backward around 90 degree of own axis, intercommunicating pore 121 will be connected with input port 114, delivery outlet 115, valve body
110 inside conductings, main valve 100 switch to opening state, meanwhile, fixture block 154 and 125 consistency from top to bottom of card slot, floating spring 124
Elastic potential energy gradually discharges and pushes floating ring 123 along 120 upward sliding of spool, and fixture block 154 is made to be connected in card slot 125
Interior, fixture block 154 restores the rotational restraint to floating ring 123；In the case of natural gas leaking, compression is overcome by thread drawing mechanism 340
The elastic force effect of spring 155 makes mandril 152 towards the slide outside of sleeve 151, divides fixture block 154 and card slot 125 mutually
From releasing fixture block 154 to the rotational restraint of floating ring 123, to enable clockwork spring 140 that the rotation of spool 120 to be driven to make valve body
110 inside disconnect.
The testing agency includes that connection connection docks pipeline between 200 output end of conveyance conduit and consumption equipment
310, it is set on docking 310 periphery of pipeline and is connected thereto the vertical pressure piping 320 of connection and is movably set in
The sliding component 330 in pipeline 310 is docked, the closing of pressure piping 320 is arranged and it is internal filled with high pressure gas, high-voltage tube
Road 320 with dock pipeline 3210 be arranged vertically and formd at the connection connection of the two circle to interface, sliding component 330 is set
It is set to the on state that can mutually switch and sealing state, the sliding component 330 under on state itself is connected and to docking
It mouthful is formed and to be blocked, 330 self seal of sliding component under sealing state and released to the closure to interface, in use process,
When the normally conveying natural gas of conveyance conduit 200, the pressure of 200 natural gas of conveyance conduit will be such that sliding component 330 is on
State and sliding component 330 is blocked to interface, if natural gas leaking occurs for conveyance conduit 200, sliding component 330 will
Automatically sealing state is switched to by state, at this point, sliding component 330 will be released to the closure to interface, pressure piping 320
Release is connected and carries out by connecting with the output end of docking pipeline 310, by the change for detecting 320 air pressure inside of pressure piping
Change, detecting conveyance conduit 200 indirectly whether there is natural gas leaking.
Specifically, the top of the pressure piping 320 is arranged in order to high pressure gas is filled in pressure piping 320
There is high pressure gas holder 350 connected to it, is equipped between high pressure gas holder 350 and pressure piping 320 for controlling the two on-off
Switch valve 351 is set to use on the pressure piping 320 in order to detect the pressure for being filled with gas inside pressure piping 320
In the air gauge 352 for detecting its air pressure inside, gas is filled with to pressure piping 320 by high pressure gas holder 350, passes through air gauge
Air pressure inside 352 detection pressure pipings 320.
Specifically, for the ease of the installation of sliding component 330, it is coaxial on the inner headed face of docking 310 input terminal of pipeline
It is fixedly installed on the inner headed face of annular convex platform 1, output end and is coaxially fixedly installed annular convex platform 2 312, boss 1
Inner headed face on be movably set with the plug screw 313 coaxially arranged, plug screw 313 along axially penetrated through along it and plug screw 313 with
Boss 1 is threadedly coupled cooperation between the two, and sliding component 330 is movably set between boss 1 and boss 2 312
, the sliding component 330 includes the hollow sliding barrel 331 being coaxially movably set on docking 310 inner headed face of pipeline, sliding
Dynamic cylinder 331 is close to the arrangement closed at one end of boss 1, the close arrangement open at one end of boss 2 312,331 outer circle of sliding barrel
Face constitutes the sealed cooperation that is slidably connected with docking between 310 inner headed face of pipeline, be provided with detection spring in sliding barrel 331
332,332 one end of detection spring and boss 2 312 contradict, the other end and 331 closed end of sliding barrel contradicts and detection spring
332 elastic force is directed toward sliding barrel 331, the closed end of the sliding barrel 331 under sealing state and boss by boss 2 312 always
One 311 contradict and release and block to interface, the open end of the sliding barrel 331 under on state and boss 2 312
It contradicts and is blocked to interface.
More specifically, it is led in order to enable the sliding barrel 331 under on state to make to dock inside pipeline 310
It is logical, so that natural gas is delivered to consumption equipment, the inner circle of the docking pipeline 310 by conveyance conduit 200, docking pipeline 310
Offer coaxially arranged annular dredging slot 314 on face, annular dredging slot 314 is located between interface and boss 1, described
Sliding barrel 331 coaxially offers annular groove 333 on the periphery of its closed end, and the groove width of annular dredging slot 314 is big
In offering the butt hole 334 with 331 internal switching of sliding barrel in the groove width of annular groove 333, annular groove 242, dock
Hole 334 is provided with several and arranges along 331 place circumferencial direction array of sliding barrel, under on state annular groove 333 with
Annular dredging slot 314 aligns.
Testing agency during the work time, is embodied in, when conveyance conduit 200 normally conveys natural gas, natural gas
The elastic force for overcoming detection spring 332 effect slides sliding barrel 331 towards boss 2 312 along docking pipeline 310 by pressure,
Detection spring 332 gradually reduces and elastic potential energy increases, until slide cartridge cylinder 331 and boss 2 312 contradict, annular groove
333 will align with annular dredging slot 314,331 pairs of docking degree of lip-roundings of the switching-on state of sliding component 330 and sliding barrel
At closure, at this point, user's control high pressure gas holder 350 is towards high pressure gas is filled in pressure piping 320, hereafter, natural gas will be by
Conveyance conduit 200, docking pipeline 310 are delivered to consumption equipment, if there is a situation where natural gas leaking, conveyings for conveyance conduit 200
The pressure of natural gas will reduce in pipeline 200, and the elastic potential energy of detection spring 332 will discharge and push 331 edge of sliding barrel
Docking pipeline 310 towards boss 1 slide until with boss 1 contradict, annular groove 333 and annular dredging slot 314
It will be staggered, sliding component 330 switches to sealing state and sliding barrel 331 is released to the closure to interface, at this point, high-voltage tube
The high pressure gas connected with the output end for docking pipeline 310 and in pressure piping 320 will be discharged and reverts to mark by road 320
Quasi- atmospheric pressure.
When testing agency detects the leakage of 200 natural gas of conveyance conduit, need that thread drawing mechanism 340 is made to pull mandril
152 overcome holddown spring 155 elastic force act on slides in and out, be coaxially arranged on the periphery of the pressure piping 320 and its
It connects and the mounting cylinder 2 321 of both ends open arrangement, mounting cylinder 2 321 is parallel to the axial direction of docking pipeline 310 and installation
Cylinder 2 321 arranges that thread drawing mechanism 340, which is set on mounting cylinder 2 321 and extends mandril 152, to be connected close to main valve 100,
The thread drawing mechanism 340 includes the connecting cylinder 342 coaxially arranged with mounting cylinder 2 321, and connecting cylinder 342 is located at mounting cylinder two
321 deviate from 320 one end of pressure piping, connecting cylinder 342 close to mounting cylinder 2 321 it is open at one end arrangement, deviate from mounting cylinder 2 321 1
End seal closes arrangement, mounting cylinder 2 321 and to being coaxially arranged between connect cylinder 342 for connecting the hollow attachment cap both connected
350, the inner headed face diameter of attachment cap 350 is equal to the diameter of 2 321 inner headed face of mounting cylinder and is greater than 342 inner headed face of connecting cylinder
Diameter is provided in the mounting cylinder 2 321 along its axially slidable piston 343, and piston 343 and mounting cylinder 2 321 are constituted
Sealed slide-and-guide cooperates, and is provided in the connecting cylinder 342 along its axially slidable pull rod 344, piston 343 and pull rod
344 are fixedly connected, and pull rod 344, which deviates from, to be provided between 343 one end of piston and mandril 152 for connect the two and tight arrangement
Drawstring 346 promotes pulling of the drawstring 346 to mandril 152 by sliding piston 343 close to pressure piping 320.
Specifically, when pressure piping 320 restores standard atmospheric pressure, in order to make piston 343 close to pressure piping 320
Sliding, the external activity of the pull rod 344 are socketed with triggering spring 345, and triggering 345 one end of spring contradicts with piston 343, is another
Hold the elastic force that spring 345 is contradicted and triggered with attachment cap 341 that piston 343 is pushed to slide close to pressure piping 320 always.
When natural gas normally conveys, the high pressure gas inside pressure piping 320 will overcome the elastic force of triggering spring 345 to act on
Piston 343 is pressed in attachment cap 341, when natural gas leaking occurs for conveyance conduit 200, thread drawing mechanism 340 is started to work,
It is embodied in, restores standard atmospheric pressure inside pressure piping 320 and the compression of piston 343 will be released, trigger spring 345
Elastic potential energy will discharge and piston 343 driven to slide along mounting cylinder 2 321 close to pressure piping 321, piston 343 is by band
Dynamic pull rod 344 moves synchronously, and pull rod 344 will drive drawstring 346 to move synchronously and pull to mandril 152, and mandril 152 will
Overcome holddown spring 155 elastic force act on slide in and out, make fixture block 154 along the radial outward movement of floating ring 123 and with
The separation of 125 phase of card slot, fixture block 154 release the rotational restraint to floating ring 123, at this point, clockwork spring 140 will drive spool 120 to rotate
Make to disconnect inside valve body 110, main valve 100 automatically switches to closed state.
Claims (10)
1. the leakage auto-cutout guard method during natural gas transportation, step are:
(1) delivery phase is docked；
S1: user the input terminal of main valve is connect with natural air-air source connection and by the output end of trigger device and consumption equipment
Connection is connected, and main valve is switched to opening state, natural air-air source will successively pass through main valve, conveyance conduit, trigger device conveying
To consumption equipment；
Main valve is set between the input terminal of conveyance conduit and natural air-air source and the input terminal of main valve and natural air-air source connect
The input terminal of connection, the output end of main valve and input channel, which connects, to be connected, and main valve is arranged to the open shape that can mutually switch to
State and closed state, trigger device be set to conveyance conduit output end and consumption equipment between and the input terminal of trigger device with
The output end connection connection of conveyance conduit, the output end of trigger device connect connection with consumption equipment；
S2: during S1, if desired cutting off the conveying of natural gas, and main valve is switched to closed state manually by user, if needing
Restore the conveying of natural gas, main valve is switched to opening state manually by user；
The main valve includes valve body, spool, knob and position-limit mechanism, and valve core rotation is set in valve body and in application valve body
The on-off in portion is provided with the clockwork spring for disconnecting valve body for driving spool voluntarily to rotate, clockwork spring set between the spool and valve body
It is connected to the outside of spool and one end is fixedly connected with spool, the other end is fixedly connected with the inner wall of valve body, the elastic force of clockwork spring begins
Driving valve core rotation disconnects valve body eventually, and position-limit mechanism is used to overcome the elastic force of clockwork spring to act on the rotation for constraining spool, and knob is used
In rotating synchronously/be used for the constraint for releasing position-limit mechanism to spool with movable valve plug；
Main valve in use, under normal circumstances, is if desired switched to closed state, user presses down on knob by main valve
And constraint of the position-limit mechanism to spool is released, under the elastic force effect of clockwork spring, spool will be 90 degree around own axis, make
Valve inner disconnects, and main valve switches to closed state, main valve is if desired switched to opening state, and user overcomes the elastic force of clockwork spring
Effect turning knob rotates backward 90 degree, and valve inner is connected, meanwhile, position-limit mechanism restores the constraint to spool, main valve
Switch to opening state；
(2) the protection stage is revealed；
S3: conveyance conduit natural gas air pressure detects in testing agency, if natural gas leaking, sliding component occur for conveyance conduit
Sealing state will be automatically switched to, pressure piping is connected with the output end for docking pipeline, and pressure piping restores normal pressure；
The testing agency includes that docking pipeline, being set between conveyance conduit output end and consumption equipment is connected in connection
On docking pipeline periphery and it is connected thereto the vertical pressure piping of connection and is movably set in the sliding docked in pipeline
Component, pressure piping closing arrangement and its it is internal be filled with high pressure gas, pressure piping with dock pipeline be arranged vertically and
Circle is formd at the connection connection of the two to interface, sliding component is arranged to the on state that can mutually switch and seal shape
State, sliding component itself conducting under on state and being formed to docking mouth block, the sliding component itself under sealing state
It seals and releases to the closure to interface；
It is provided with high pressure gas holder connected to it at the top of the pressure piping, is installed between high pressure gas holder and pressure piping useful
The air gauge for detecting its air pressure inside is set in the switch valve of both control on-off, on the pressure piping；
During the work time, when conveyance conduit normally conveys natural gas, the pressure of natural gas will overcome detection spring for testing agency
Elastic force effect make sliding barrel along docking pipeline towards boss two slide, detection spring gradually reduce and elastic potential energy increase
Greatly, until slide cartridge cylinder and boss two contradict, annular groove will align with annular dredging slot, the switching-on shape of sliding component
State and sliding barrel form docking mouth and block, at this point, user's control high pressure gas holder is towards being filled with high pressure gas in pressure piping
Body, hereafter, natural gas will be delivered to consumption equipment by conveyance conduit, docking pipeline, if natural gas leaking occurs for conveyance conduit
Situation, the pressure of natural gas will reduce in conveyance conduit, and the elastic potential energy of detection spring will discharge and push sliding barrel edge
Docking pipeline towards boss one slide until with boss one contradict, annular groove and annular dredge slot will be staggered, sliding component
Sealing state and sliding barrel is switched to release to the closure to interface, at this point, pressure piping by with the output of docking pipeline
Termination is led to and the high pressure gas in pressure piping will be discharged and revert to standard pressure；
S4: will inspire thread drawing mechanism and pull to position-limit mechanism after pressure piping release, release position-limit mechanism to spool
Rotational restraint, clockwork spring will drive valve core rotation to disconnect valve inner, and main valve automatically switches to closed state；
Be coaxially arranged on the periphery of the pressure piping connected with it and both ends open arrangement mounting cylinder two, mounting cylinder
Two are parallel to the axial direction of docking pipeline and mounting cylinder two arranges that thread drawing mechanism is set on mounting cylinder two and prolongs close to main valve
It stretches in mandril to be connected, the thread drawing mechanism includes the connecting cylinder coaxially arranged with mounting cylinder two, and connecting cylinder is located at mounting cylinder
Two deviate from pressure piping one end, connecting cylinder close to mounting cylinder two it is open at one end arrangement, deviate from the arrangement closed at one end of mounting cylinder two, peace
Fitted tube two and to be coaxially arranged between connect cylinder for connect connect both hollow attachment cap, inner headed face diameter of attachment cap etc.
In two inner headed face of mounting cylinder diameter and be greater than the diameter of connecting cylinder inner headed face, be provided with along its axial direction in the mounting cylinder two
Slidable piston, piston and mounting cylinder two constitute sealed slide-and-guide and cooperate, and are provided in the connecting cylinder along its axial direction
Slidable pull rod, piston are fixedly connected with pull rod, and pull rod, which deviates from, to be provided with for connecting the two between piston one end and mandril
And the drawstring of tight arrangement；
The external activity of the pull rod is socketed with triggering spring, and triggering spring one end is contradicted with piston, the other end and attachment cap support
It touches and the elastic force for triggering spring pushes piston to slide close to pressure piping always；
Main valve is to restore standard atmospheric pressure inside pressure piping and will release to the compression of piston during being automatically closed,
The elastic potential energy of triggering spring will discharge and piston driven to slide along mounting cylinder two close to pressure piping, and piston will drive and draw
Bar moves synchronously, and pull rod will drive drawstring to move synchronously and pull to mandril, and mandril will overcome the elastic force of holddown spring
Effect slides in and out, and separates fixture block mutually along the radial outward movement of floating ring and with card slot, and fixture block is released to floating ring
Rotational restraint, at this point, clockwork spring by drive valve core rotation disconnect valve inner, main valve automatically switches to closed state.
2. the leakage auto-cutout guard method during natural gas transportation according to claim 1,
It is coaxially fixedly installed on the inner headed face of annular convex platform one, output end on the inner headed face of the docking pipeline input terminal coaxial
It is fixedly installed annular convex platform two, the plug screw coaxially arranged is movably set on the inner headed face of boss one, plug screw is along it
It axially penetrates through and plug screw with boss one is threadedly coupled cooperation between the two, sliding component is movably set in boss one and boss two
Between.
3. the leakage auto-cutout guard method during natural gas transportation according to claim 2,
The sliding component includes the hollow sliding barrel being coaxially movably set on docking pipeline inner headed face, and sliding barrel leans on
Nearly boss one arrangement closed at one end, close to the arrangement open at one end of boss two, sliding barrel periphery with dock pipeline inner headed face it
Between constitute the sealed cooperation that is slidably connected.
4. the leakage auto-cutout guard method during natural gas transportation according to claim 3,
Detection spring, detection spring one end and the conflict of boss two, the other end and sliding barrel closed end are provided in sliding barrel
Contradict and the elastic force of detection spring be directed toward sliding barrel by boss two always, the closed end of the sliding barrel under sealing state with
Boss one is contradicted and is released and blocks to interface, and the open end of the sliding barrel under on state and boss two contradict simultaneously
And it is blocked to interface.
5. the leakage auto-cutout guard method during natural gas transportation according to claim 4,
Offer coaxially arranged annular dredging slot on the inner headed face of the docking pipeline, annular dredging slot position in interface with it is convex
Between platform one, the sliding barrel coaxially offers annular groove, the slot of annular dredging slot on the periphery of its closed end
It is wider than the groove width of annular groove, the butt hole with sliding barrel internal switching is offered on annular groove, butt hole is provided with
It is several and where the sliding barrel circumferencial direction array arrangement, annular groove and annular dredge slot and align under on state.
6. the leakage auto-cutout guard method during natural gas transportation according to claim 1, the valve body are set
It is set to columnar hollow and upper end opening arrangement tube structure, is provided at the upper end opening of valve body and constitutes sealed connection cooperation with it
Circular seal lid, the input adapter and out splice going splice with its internal switching are radially provided on the periphery of valve body, it is defeated
The axisymmetrical for entering connector and out splice going splice along valve body is arranged, input port, output are constituted at the connection of input adapter and valve body
Delivery outlet is constituted at the connection of connector and valve body, the input adapter connect connection and out splice going splice with natural air-air source
Connection is connect with the input terminal of conveyance conduit.
7. the leakage auto-cutout guard method during natural gas transportation according to claim 1, the spool are set
It is set to the column structure to match with valve body inner headed face, the inner headed face composition rotary type sealed connection of spool and valve body cooperates, valve
It is offered on core radially through the intercommunicating pore of arrangement, intercommunicating pore is adapted with input port, delivery outlet.
8. the leakage auto-cutout guard method during natural gas transportation according to claim 7,
The knob is located at the top of sealing cover and the two is coaxially arranged, the lower end surface of knob be coaxially fixedly installed opening to
The fixes sleeve of lower arrangement, fixes sleeve activity pass through the top that sealing cover is socketed on spool, flower between fixes sleeve and spool
Key connection cooperates and fixes sleeve can be along the axially downwardly sliding of spool.
9. the leakage auto-cutout guard method during natural gas transportation according to claim 8,
The outer, coaxial fixing sleeve of the spool is equipped with fixed ring, coaxial movable sleeve is equipped with floating ring, and fixed ring is located at fixing sleeve
Cylinder intercommunicating pore between, floating ring is located at the top of fixed ring, between floating ring and spool constitute feather key connection cooperate and can
It is slided up and down along spool, the external activity of spool is arranged with floating spring, floating spring one end and fixed ring conflict, the other end
It is contradicted with floating ring and the elastic force of floating spring is directed toward floating ring by fixed ring always, floating ring is always and under fixes sleeve
Hold it is inconsistent, offered on the periphery of the floating ring up and down perforative card slot.
10. the leakage auto-cutout guard method during natural gas transportation according to claim 1, the valve body are close
Be fixedly installed the mounting cylinder one radially arranged on the periphery of the upper end opening, one both ends open of mounting cylinder and with
Valve body connect, the axial direction for being axially parallel to conveyance conduit of mounting cylinder one and its close to trigger device arrange, position-limit mechanism set
It is connected on mounting cylinder one and extends and be plugged in card slot, position-limit mechanism includes the docking being coaxially fixedly sheathed on mounting cylinder one
Sleeve, butt muff close to one one end of mounting cylinder is open end, the other end is closed end, is coaxially movably set in butt muff
The closed end of mandril and mandril and butt muff constitute slide-and-guide cooperation, mandril one end extend to butt muff outside,
The other end extends in valve body across mounting cylinder one and the end is coaxially fixedly installed rotary table, and rotary table can be along mounting cylinder one
Inner headed face is slided, and rotary table is provided under pointed and original state away from one end face of mandril and is actively plugged in card slot
Fixture block, the external activity of the mandril is socketed with holddown spring, holddown spring one end and rotary table contradict, the other end with to female connector
Cylinder closed end contradicts and the elastic force of holddown spring is directed toward rotary table by the closed end of butt muff always.
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| CN201910598204.2A CN110332328B (en) | 2019-07-04 | 2019-07-04 | Leakage automatic circuit-breaking protection method in natural gas conveying process |
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| CN201910598204.2A CN110332328B (en) | 2019-07-04 | 2019-07-04 | Leakage automatic circuit-breaking protection method in natural gas conveying process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748662A (en) * | 2019-10-31 | 2020-02-04 | 信众 | Automatic detection closing device for heating leakage |
| CN114033888A (en) * | 2021-12-14 | 2022-02-11 | 杭州云气控股有限公司 | Intelligent valve |
| CN115451346A (en) * | 2022-08-18 | 2022-12-09 | 芜湖中燃城市燃气发展有限公司 | Leakage automatic circuit breaker for natural gas transmission |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4483366A (en) * | 1980-07-31 | 1984-11-20 | Leonard Labita | Locking valve |
| CN2307964Y (en) * | 1997-06-18 | 1999-02-17 | 龚惠丰 | Closed gas pipeline magnetic valve |
| CN203384448U (en) * | 2013-08-15 | 2014-01-08 | 深圳市家乐士净水科技有限公司 | Pressure reducing valve provided with universal end covers |
| CN203413835U (en) * | 2013-07-09 | 2014-01-29 | 中山百得厨卫有限公司 | Domestic gas instantaneous water heater with wedged gas valve core for gas flow adjustment |
| CN108954014A (en) * | 2018-07-28 | 2018-12-07 | 杨勇强 | A kind of high-efficiency environment friendly energy-conservation force feed natural gas facility |
-
2019
- 2019-07-04 CN CN201910598204.2A patent/CN110332328B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4483366A (en) * | 1980-07-31 | 1984-11-20 | Leonard Labita | Locking valve |
| CN2307964Y (en) * | 1997-06-18 | 1999-02-17 | 龚惠丰 | Closed gas pipeline magnetic valve |
| CN203413835U (en) * | 2013-07-09 | 2014-01-29 | 中山百得厨卫有限公司 | Domestic gas instantaneous water heater with wedged gas valve core for gas flow adjustment |
| CN203384448U (en) * | 2013-08-15 | 2014-01-08 | 深圳市家乐士净水科技有限公司 | Pressure reducing valve provided with universal end covers |
| CN108954014A (en) * | 2018-07-28 | 2018-12-07 | 杨勇强 | A kind of high-efficiency environment friendly energy-conservation force feed natural gas facility |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748662A (en) * | 2019-10-31 | 2020-02-04 | 信众 | Automatic detection closing device for heating leakage |
| CN114033888A (en) * | 2021-12-14 | 2022-02-11 | 杭州云气控股有限公司 | Intelligent valve |
| CN115451346A (en) * | 2022-08-18 | 2022-12-09 | 芜湖中燃城市燃气发展有限公司 | Leakage automatic circuit breaker for natural gas transmission |
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| CN110332328B (en) | 2021-01-05 |
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