CN113566002B - Mechanical self-operated air-break valve device - Google Patents
Mechanical self-operated air-break valve device Download PDFInfo
- Publication number
- CN113566002B CN113566002B CN202110954925.XA CN202110954925A CN113566002B CN 113566002 B CN113566002 B CN 113566002B CN 202110954925 A CN202110954925 A CN 202110954925A CN 113566002 B CN113566002 B CN 113566002B
- Authority
- CN
- China
- Prior art keywords
- valve seat
- pressure regulating
- nut
- valve
- sealing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001105 regulatory effect Effects 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims description 63
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 230000007704 transition Effects 0.000 claims description 12
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention belongs to the field of test equipment and process equipment, and relates to a mechanical self-operated air-break valve device which consists of a pressure regulating pilot valve and an air supply on-off main valve. The invention solves the problems that when the inflation pressure is close to a set value, the opening of a valve port of a pressure reducing valve of equipment is small, and the inflation pressure of a tested part rises abnormally slowly by utilizing a mechanical self-operated air-break valve device; when the leakage point exists at the tested part, and the inflation pressure is not up to the set value, the gas flow through the pressure reducing valve is balanced with the gas leakage flow at the tested part, so that the inflation pressure at the tested part can not be up to the set value forever; and can be used for replacing electromagnetic valves under explosion-proof working conditions.
Description
Technical Field
The invention belongs to the field of test equipment and process equipment, relates to a mechanical self-operated air-break valve device, and particularly relates to an air source cutting element for inflating certain parts of an aircraft to serve as sealing checking equipment, so that overpressure at certain parts of the aircraft is prevented, and the aircraft is protected from being damaged.
Background
The air-tightness inspection is carried out on certain parts of the aircraft, and particularly, the portable air-filling equipment adopts a combination mode of a pressure reducing valve and a safety valve, so that the safety of the aircraft is ensured. The pressure reducing valve automatically adjusts the opening of the valve port according to the pressure of the air outlet of the pressure reducing valve so as to change the gas passing resistance and achieve the purpose of stabilizing the outlet pressure; the safety valve is opened when the gas pressure exceeds a certain set value, and the gas is discharged and discharged. The combination of the pressure reducing valve and the safety valve has a plurality of defects for the aircraft parts with larger tested volume: firstly, when the inflation pressure is close to a set value, the opening of a valve port of a pressure reducing valve of the equipment is small, and the inflation pressure of a tested part rises abnormally slowly; and secondly, when the leakage point exists at the tested part, and the inflation pressure is less than the set value, the gas flow through the pressure reducing valve and the gas leakage flow at the tested part are balanced, and the inflation pressure at the tested part can not always reach the set value.
Disclosure of Invention
Aiming at the sealing inflation inspection equipment of the tested part of the airplane with larger volume, the invention provides the device for solving the defect of the combination mode of the pressure reducing valve and the safety valve. The air-break valve consists of a pressure regulating pilot valve and an air supply on-off main valve, and the action of the main valve core under different set pressures is realized by regulating the action pressure of the pilot valve. When the set inflation pressure is not reached, the valve opening is unchanged, the inflation flow is constant, once the inflation pressure set value is reached, the valve immediately acts, the inflation port air source is disconnected, the pressure of the tested part is not increased any more, the air tightness is free from leakage, the test requirement is ensured, and the safety and the reliability of the tested part are ensured.
The technical scheme of the invention is as follows:
the mechanical self-operated air-break valve device mainly consists of a pressure regulating pilot valve and an air supply on-off main valve.
The pressure regulating pilot valve mainly comprises an upper valve seat 2, a transition nut 4, a pressure regulating lock nut 5, a pressure regulating nut 6, a pressure regulating spring 8, a piston 9, a sealing lock nut 10, a sealing ring 11 for holes and an O-shaped sealing ring a 12. The main valve is mainly composed of a lower valve seat 1, a pull rod 7, a steel ball 13, a valve core 14, an O-shaped sealing ring b15, a steel ball sliding sleeve 16, an O-shaped sealing ring c17, a main spring 18, an O-shaped sealing ring d19, a sealing gasket 20 and an O-shaped sealing ring e 21.
The upper valve seat 2 is of a cylindrical structure, the upper end of the upper valve seat is provided with external threads, and the upper valve seat is matched with the wallboard nut 3 to be used for installing the whole mechanical self-operated air-break valve device. The lower valve seat 1 and the upper valve seat 2 are sealed by an O-shaped sealing ring e21 and are connected by screws.
The bottom of the valve core 14 is positioned in the lower valve seat 1, the upper part of the valve core 14 is positioned in the upper valve seat 2, and an inner hole at the lower end of the valve core 14 is in interference fit with the sealing gasket 20 for on-off sealing of air flow. The pull rod 7 is inserted into the upper valve seat 2, the pull rod 7 and the valve seat are coaxial, the bottom end of the pull rod 7 is connected to the upper part of the valve core 14 in a threaded mode, the top end of the pull rod 7 is located outside the upper valve seat 2, and initial position resetting is conducted through manual pulling of the pull rod 7. The steel ball sliding sleeve 16 is sleeved outside the valve core 14, the upper parts of the steel ball sliding sleeve 16 and the valve core 14 are in sliding fit and are sealed through the O-shaped sealing ring b15, a space is reserved at the lower parts of the steel ball sliding sleeve 16 and the valve core 14 for installing the main spring 18, and the main spring 18 is positioned between the stepped hole end face of the steel ball sliding sleeve 16 and the stepped shaft end face of the valve core 14.
The piston 9 is arranged on the pull rod 7 and is positioned in the middle of the upper valve seat 2, and the piston 9 is in sliding fit with the upper valve seat 2 and is sealed by a sealing ring 11 through a hole; a sealing locking nut 10 is arranged in an inner hole at the upper end of the piston 9, the sealing locking nut 10 is in sliding fit with the pull rod 7 and used for guiding the pull rod 7, and the inner hole at the upper end of the piston 9 is sealed with the pull rod 7 through an O-shaped sealing ring a 12; the lower end face of the piston 9 is provided with evenly-distributed ventilation grooves for air flow.
The transition nut 4 is in threaded connection with the top of the upper valve seat 2, the pressure regulating nut 6 is screwed on the transition nut 4, and the pull rod 7 passes through the pressure regulating nut 6 and the transition nut 4. The pressure regulating spring 8 is arranged between the end face of the step hole of the pressure regulating nut 6 and the end face of the sealing lock nut 10, and is screwed by the pressure regulating nut 6 to compress the pressure regulating spring 8; the pressure regulating nut 6 is provided with a pressure regulating lock nut 5 outside, and the pressure regulating nut 6 is locked and limited.
The outer diameter of the steel ball sliding sleeve 16 is in a step form, the lower end face is positioned on the end face of the inner hole of the lower valve seat 1 and is sealed by an O-shaped sealing ring d19, the large outer diameter is matched with the inner hole of the lower valve seat 1 and is limited by the bottom face of the upper valve seat 2, the middle outer diameter is matched with the inner hole of the upper valve seat 2 and is sealed by an O-shaped sealing ring c17, the small outer diameter is in clearance fit with the inner hole at the lower end of the piston 9 and is used for gas circulation, uniformly distributed holes are radially formed in the small outer diameter, and the steel balls 13 are arranged in the holes and clamped in conical ring grooves of the outer diameter of the valve core 14 and are used for initial limiting under the opening state of the valve core 14.
The invention has the beneficial effects that: the invention solves the problems that when the inflation pressure is close to a set value, the opening of a valve port of a pressure reducing valve of equipment is small, and the inflation pressure of a tested part rises abnormally slowly by utilizing a mechanical self-operated air-break valve device; when the leakage point exists at the tested part, and the inflation pressure is not up to the set value, the gas flow through the pressure reducing valve is balanced with the gas leakage flow at the tested part, so that the inflation pressure at the tested part can not be up to the set value forever; and can be used for replacing electromagnetic valves under explosion-proof working conditions.
Drawings
FIG. 1 is an overall schematic view of a mechanical self-operated air shutoff valve assembly of the present invention;
Fig. 2 is an internal schematic view of the mechanical self-operated air shutoff valve device of the invention.
In the figure: 1, a lower valve seat; 2, a valve seat is arranged on the valve seat; 3, wallboard nuts; 4, a transition nut; 5, adjusting the pressure lock nut; 6, adjusting a pressure nut; 7, a pull rod; 8, a pressure regulating spring; 9, a piston; 10 sealing the mother; a sealing ring for 11 holes; a 12O-shaped sealing ring a;13 steel balls; 14 valve core; 15O-ring seal b;16 steel ball sliding sleeves; 17O-ring seal c;18 a main spring; 19O-ring seal d;20 sealing gaskets; and a 21O-shaped sealing ring e.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and technical schemes.
As shown in figures 1 and 2, the mechanical self-operated air-break valve device consists of a pressure regulating pilot valve and an air supply on-off main valve, and the action pressure of the pressure regulating pilot valve is regulated to realize the action of a main valve core under different set pressures so as to rapidly break an air source. The specific structure is as follows:
The pressure regulating pilot valve mainly comprises an upper valve seat 2, a transition nut 4, a pressure regulating lock nut 5, a pressure regulating nut 6, a pressure regulating spring 8, a piston 9, a sealing lock nut 10, a sealing ring 11 for holes and an O-shaped sealing ring a 12. The upper end of the upper valve seat 2 is provided with external threads, and is matched with two wallboard nuts 3 for the installation of the whole mechanical self-operated air-break valve device. The transition nut 4 is screwed on the upper valve seat 2 as an easily worn piece. The pressure regulating spring 8 is arranged between the end face of the stepped hole of the pressure regulating nut 6 and the end face of the sealing lock nut 10, the pressure regulating nut 6 is screwed on the transition nut 4 and compresses the pressure regulating spring 8, the position of the pressure regulating nut 6 is regulated according to the pressure value of the gas filled according to the actual working condition requirement, and the pressure regulating lock nut 5 is used for locking and limiting. The piston 9 is in sliding fit with the upper valve seat 2, the hole is sealed by a sealing ring 11, the inner hole at the upper end of the piston 9 is sealed by an O-shaped sealing ring a12 to the pull rod 7, and the pull rod is limited by a sealing nut 10; the lower end face of the piston 9 is provided with uniformly-distributed ventilation grooves for air flow to pass through; the sealing nut 10 is in sliding fit with the pull rod 7 for guiding the pull rod 7.
The main valve is mainly composed of a lower valve seat 1, a pull rod 7, a steel ball 13, a valve core 14, an O-shaped sealing ring b15, a steel ball sliding sleeve 16, an O-shaped sealing ring c17, a main spring 18, an O-shaped sealing ring d19, a sealing gasket 20 and an O-shaped sealing ring e 21. The lower valve seat 1 can be designed by itself according to the angle and the space direction of the inlet nozzle and the outlet nozzle of the use condition, and the lower valve seat 1 and the upper valve seat 2 are sealed by an O-shaped sealing ring e21 and connected by an inner hexagon screw. The outer diameter of the steel ball sliding sleeve 16 is in a step form, the lower end surface is arranged on the end surface of the inner hole of the lower valve seat 1 and is sealed by an O-shaped sealing ring d19, the large outer diameter is matched with the inner hole of the lower valve seat 1 and is limited by the bottom surface of the upper valve seat 2, the middle outer diameter is matched with the inner hole of the upper valve seat 2 and is sealed by an O-shaped sealing ring c17, and the small outer diameter is in clearance fit with the inner hole of the lower end of the piston 9 for gas circulation; 6 uniformly distributed holes are radially formed in the small outer diameter, and steel balls 13 are arranged in the holes and clamped in conical ring grooves of the outer diameter of the valve core 14 for initial limiting of the valve core 14 in an opened state; the main spring 18 is arranged between the stepped hole end face of the steel ball sliding sleeve 16 and the stepped shaft end face of the valve core 14; the valve core 14 is in sliding fit with the steel ball sliding sleeve 16 and is sealed by the O-shaped sealing ring b 15. The gasket 20 is in interference fit with the inner hole at the lower end of the valve core 14 for on-off sealing of air flow. The pull rod 7 is in threaded connection with the valve core 14 and is reset by a manual initial position.
Working principle: the position of the pressure regulating nut 6 is regulated according to the pressure value of the gas filled in the actual working condition requirement, and the locking nut 5 is used for locking and limiting, at the moment, the lower end surface of the piston 9 is tightly attached to the end surface of the steel ball sliding sleeve 16 under the action of the pressure regulating spring 8; the pull rod 7 is pulled upwards to drive the valve core 14 to clamp the position of the steel ball 13, and the main spring 18 stores the force but is not larger than the clamping force of the steel ball; when the pressure is inflated to the working condition pressure, the pressure overcomes the force of the pressure regulating spring 8, and the piston 9 is pushed to move to the position of the steel ball 13 on the piston 9; the steel ball 13 pulls down the valve core 14 under the force of the main spring 18, so that the inflating action is stopped instantaneously.
Claims (1)
1. The mechanical self-operated air-break valve device is characterized by comprising a pressure regulating pilot valve and an air supply on-off main valve;
The pressure regulating pilot valve mainly comprises an upper valve seat (2), a transition nut (4), a pressure regulating lock nut (5), a pressure regulating nut (6), a pressure regulating spring (8), a piston (9), a sealing lock nut (10), a sealing ring (11) for a hole and an O-shaped sealing ring a (12); the main valve is mainly composed of a lower valve seat (1), a pull rod (7), a steel ball (13), a valve core (14), an O-shaped sealing ring b (15), a steel ball sliding sleeve (16), an O-shaped sealing ring c (17), a main spring (18), an O-shaped sealing ring d (19), a sealing gasket (20) and an O-shaped sealing ring e (21);
The upper valve seat (2) is of a cylindrical structure, the upper end of the upper valve seat is provided with external threads, and the upper valve seat is matched with a wallboard nut (3) for mounting the whole mechanical self-operated air-break valve device; the lower valve seat (1) and the upper valve seat (2) are sealed by an O-shaped sealing ring e (21) and are connected through screws;
The bottom of the valve core (14) is positioned in the lower valve seat (1), the upper part of the valve core is positioned in the upper valve seat (2), and an inner hole at the lower end of the valve core (14) is in interference fit with the sealing gasket (20) for on-off sealing of air flow; the pull rod (7) is inserted into the upper valve seat (2) and is coaxial, the bottom end of the pull rod (7) is connected with the upper part of the valve core (14) in a threaded manner, the top end of the pull rod (7) is positioned outside the upper valve seat (2), and the pull rod (7) is pulled manually to reset the initial position; the steel ball sliding sleeve (16) is sleeved outside the valve core (14), the upper parts of the steel ball sliding sleeve and the valve core are in sliding fit and are sealed through the O-shaped sealing ring b (15), a space is reserved at the lower parts of the steel ball sliding sleeve and the valve core for installing the main spring (18), and the main spring (18) is positioned between the stepped hole end face of the steel ball sliding sleeve (16) and the stepped shaft end face of the valve core (14);
The piston (9) is arranged on the pull rod (7) and positioned in the middle of the upper valve seat (2), and the piston (9) is in sliding fit with the upper valve seat (2) and is sealed by a sealing ring (11) for a hole; a sealing lock nut (10) is arranged in an inner hole at the upper end of the piston (9), the sealing lock nut (10) is in sliding fit with the pull rod (7) and is used for guiding the pull rod (7), and the inner hole at the upper end of the piston (9) is sealed with the pull rod (7) through an O-shaped sealing ring a (12); the lower end surface of the piston (9) is provided with uniformly-distributed ventilation grooves for air flow to pass through;
The transition nut (4) is in threaded connection with the top of the upper valve seat (2), the pressure regulating nut (6) is screwed on the transition nut (4), and the pull rod (7) passes through the pressure regulating nut (6) and the transition nut (4); the pressure regulating spring (8) is arranged between the end face of the step hole of the pressure regulating nut (6) and the end face of the sealing lock nut (10), and is tightly screwed through the pressure regulating nut (6) to compress the pressure regulating spring (8); a pressure regulating lock nut (5) is arranged outside the pressure regulating nut (6), and the pressure regulating nut (6) is locked and limited;
The outer diameter of the steel ball sliding sleeve (16) is in a step form, the lower end face is positioned on the inner hole end face of the lower valve seat (1) and is sealed by an O-shaped sealing ring d (19), the large outer diameter is matched with the inner hole of the lower valve seat (1) and is limited by the bottom face of the upper valve seat (2), the middle outer diameter is matched with the inner hole of the upper valve seat (2) and is sealed by an O-shaped sealing ring c (17), the small outer diameter is in clearance fit with the inner hole at the lower end of the piston (9) and is used for gas circulation, 6 uniformly distributed holes are radially arranged on the small outer diameter, and the steel balls (13) are arranged in the holes and are clamped in an outer diameter conical ring groove of the valve core (14) and are used for initial limiting under the opening state of the valve core (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110954925.XA CN113566002B (en) | 2021-08-19 | 2021-08-19 | Mechanical self-operated air-break valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110954925.XA CN113566002B (en) | 2021-08-19 | 2021-08-19 | Mechanical self-operated air-break valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113566002A CN113566002A (en) | 2021-10-29 |
| CN113566002B true CN113566002B (en) | 2024-10-29 |
Family
ID=78172138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110954925.XA Active CN113566002B (en) | 2021-08-19 | 2021-08-19 | Mechanical self-operated air-break valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113566002B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217784320U (en) * | 2021-08-19 | 2022-11-11 | 沈阳飞机工业（集团）有限公司 | Mechanical self-operated air-break valve device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699808A (en) * | 2005-06-20 | 2005-11-23 | 浙江大学 | Slide valve type pilot ultra-high pressure pneumatic proportional pressure-reducing valve |
| KR20100003684U (en) * | 2008-09-29 | 2010-04-07 | 전흔수 | Reducing valve installed a bleed room |
| KR100950571B1 (en) * | 2009-02-27 | 2010-04-01 | (주)동우정공 | Relief valve of heavy equipment |
| KR102143168B1 (en) * | 2016-03-31 | 2020-08-11 | 가부시키가이샤 후지킨 | Relief valve |
| CN107605851B (en) * | 2017-09-18 | 2019-06-07 | 沈阳飞机工业（集团）有限公司 | Hydraulic pressing sleeve device |
-
2021
- 2021-08-19 CN CN202110954925.XA patent/CN113566002B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217784320U (en) * | 2021-08-19 | 2022-11-11 | 沈阳飞机工业（集团）有限公司 | Mechanical self-operated air-break valve device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113566002A (en) | 2021-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6015134A (en) | Pneumatic actuator assembly | |
| US3664362A (en) | Pilot valve | |
| US3568706A (en) | Pressure relieving system | |
| US2929399A (en) | Fluid check valve | |
| WO2017096515A1 (en) | Self-actuated emergency shut-off valve | |
| KR101401086B1 (en) | Prefabricated high-pressure flow control valve | |
| CN107654702B (en) | One-way valve | |
| US3032054A (en) | Pressure regulator construction | |
| CN217784320U (en) | Mechanical self-operated air-break valve device | |
| CA3025487C (en) | Water control valve | |
| CN113566002B (en) | Mechanical self-operated air-break valve device | |
| CN105673900A (en) | Air reducing valve used for ships | |
| US4458903A (en) | Control line sealing connection | |
| CN105067244A (en) | Scavenging collector pipe safety valve working pressure test device and method | |
| US4041973A (en) | Quick change valve trim assembly | |
| CN103075552B (en) | High-flow-rate special gas pressure reducing device | |
| US9920842B1 (en) | Low-torque choke valve for well automation | |
| US11835181B2 (en) | Attachable/detachable pressure evacuation device | |
| US3570805A (en) | Valve having quick release fluid pressure valve closing means | |
| KR20220144846A (en) | Pressure regulator with outlet overpressure safety | |
| CN102828722B (en) | A kind of oil well sleeve gas releasing device | |
| CN102537370B (en) | A kind of stepless adjustable mechanical servo switch bleed valve | |
| CN207018591U (en) | A kind of pressure-adjusting type vehicle safety valve | |
| CN219756042U (en) | Safety intelligent directional pressure relief device for high-pressure hydrogen storage cylinder | |
| CN220016201U (en) | Pressure relief safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |