CN206206716U - Relief valve - Google Patents
Relief valve Download PDFInfo
- Publication number
- CN206206716U CN206206716U CN201621110332.6U CN201621110332U CN206206716U CN 206206716 U CN206206716 U CN 206206716U CN 201621110332 U CN201621110332 U CN 201621110332U CN 206206716 U CN206206716 U CN 206206716U
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- CN
- China
- Prior art keywords
- spring
- piston
- valve body
- gas pressure
- relief valve
- 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.)
- Expired - Fee Related
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- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000001154 acute effect Effects 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 210000003462 vein Anatomy 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a kind of relief valve, it includes valve body, piston and spring, and the valve body has a cylindrical interior volume, and the piston is arranged at the inner chamber with being reciprocally moveable；The valve body offers the gas pressure relief slot of at least one strip, and the gas pressure relief slot connects the exterior space of the inner chamber and the valve body, and center line any point tangent line and the inner chamber of the gas pressure relief slot diameter parallel or at an acute angle；The inner chamber two ends are respectively pressure entrance and tail end, and the piston separates the pressure entrance and the gas pressure relief slot；The spring connects the piston and the valve body, and the spring effect points to the pressure entrance in the reply force direction of the piston.The utility model can automatically adjust pressure release speed, linear regulation system pressure, it is to avoid the unexpected keying of relief valve is impacted to system, reduce the jumbo fluctuation of system pressure.
Description
Technical field
The utility model is related to a kind of relief valve.
Background technology
Relief valve also known as safety valve, be it is a kind of can according to internal system operating pressure automatic open close valve, general peace
With protection system safety in equipment or pipeline loaded on closed system.Pressure inside equipment or pipeline exceedes setting for relief valve
During constant-pressure, that is, automatically turn on pressure release, it is ensured that the pressure medium in equipment or pipeline is being set under pressure, so that protection equipment
Or the safety of pipeline, prevent accident.
Conventional relief valve is generally provided only with standard-sized sheet and fully closed two kinds of working conditions at present, larger in internal system pressure
When, the keying of relief valve can produce greater impact to the distribution of the pressure of equipment or pipeline internal medium so that other equipment in system
Operation be also affected, in particular for relatively steady input or the equipment of output medium.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, there is provided one kind is adjusted automatically according to system pressure
Save the relief valve of pressure release speed.
To realize object above, the utility model is achieved through the following technical solutions：
A kind of relief valve, it includes valve body, piston and spring, and the valve body has a cylindrical interior volume, and the piston can be past
It is multiple to be movably arranged at the inner chamber；The valve body offers the gas pressure relief slot of at least one strip, and the gas pressure relief slot connects institute
State the outside of inner chamber and the valve body, and the center line any point tangent line of the gas pressure relief slot and the diameter parallel of the inner chamber or
It is at an acute angle；The inner chamber two ends are respectively pressure entrance and tail end, and the piston separates the pressure entrance and the gas pressure relief slot；
The spring connects the piston and the valve body, and the spring effect is described in the reply force direction sensing of the piston
Pressure entrance.
According to one embodiment of the present utility model, the spring is helical spring.
According to one embodiment of the present utility model, the spring is compression spring, and the spring one end is against the tail
End, the other end is against the piston.
According to one embodiment of the present utility model, the spring is compression spring, and the tail end is arranged with adjusting pressuring knob,
The adjusting pressuring knob is connected with the valve body screw thread, and against the adjusting pressuring knob, the other end is against the work for the spring one end
Plug.
According to one embodiment of the present utility model, the adjusting pressuring knob outer surface is provided with anti-slip veins.
According to one embodiment of the present utility model, the spring is extension spring.
According to one embodiment of the present utility model, the piston is connected with drag hook, and the drag hook is stretched through the gas pressure relief slot
Go out the valve body, the spring one end is connected to the drag hook, and the other end is connected to the valve body.
According to one embodiment of the present utility model, the relief valve also includes stop device, and the stop device is set
Between the piston and the pressure entrance, the stroke for limiting the piston.
According to one embodiment of the present utility model, the stop device is the limit convex for protruding from the surface of internal cavity
Be resisted against the piston on the spacing block set by block, the restoring force effect of the spring.
According to one embodiment of the present utility model, the spacing block set is annular.
According to one embodiment of the present utility model, the quantity of the gas pressure relief slot is two, three or four.
Relief valve disclosed in the utility model, can automatically adjust pressure release speed according to system pressure, it is to avoid relief valve is dashed forward
The impact caused to equipment in system is so opened and closed, the jumbo fluctuation of system pressure is reduced, and realizes that simply fault rate is low, into
This is low.
Brief description of the drawings
Fig. 1 is a kind of relief valve of the utility model；
Fig. 2 is the sectional view of relief valve in Fig. 1, for showing its internal structure；
Fig. 3 is the sectional view of relief valve in Fig. 1, for showing its operation principle；
Fig. 4 is the sectional view of another relief valve of the utility model, for showing its internal structure and operation principle；
Fig. 5 is another relief valve of the utility model；
Fig. 6 is the sectional view of relief valve in Fig. 5, for showing its internal structure and operation principle；
Fig. 7 is another relief valve of the utility model；
Fig. 8 is the sectional view of relief valve in Fig. 7, for showing its internal structure and operation principle；
Fig. 9 is the sectional view of another relief valve of the utility model, for showing its internal structure and operation principle.
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings：
Embodiment one
With reference to Fig. 1 and Fig. 2, for the relief valve of compressed air line, including valve body 1, valve body 1 is thin-wall circular tubular, its
With an inner chamber.Valve body 1 has two ends：Pressure entrance 12 and tail end 13, wherein pressure entrance 12 are used to connect pressure piping, and
So that the gas with pressure enters the inner chamber of valve body 1.Tail end 13 is closed, and the surface of internal cavity near pressure entrance 12 is provided with one
Circle spacing block set 11.
Piston 2 and spring 3 are provided with inner chamber inside valve body 1, piston 2 can be moved back and forth along the inwall of inner chamber, and spring 3 is
Compression spring, its one end is resisted against tail end 13, and the other end is resisted against piston 2, and by piston 2 promoted to pressure entrance 12 and against
On spacing block set 11.
Be further opened with the gas pressure relief slot 4 of a strip on the barrel of valve body 1, gas pressure relief slot 4 be opened in piston 2 and bottom 13 it
Between.The inner chamber of the connection valve body 1 of gas pressure relief slot 4 and outside atmosphere.When piston 2 is against spacing block set 11, gas pressure relief slot 4 and pressure entrance
12 are separated by piston, and now pressure entrance 12 is not communicated with gas pressure relief slot 4, namely are not communicated with ambient atmosphere, work gas
Body is closed in internal system.
Fig. 3 shows the operation principle of relief valve.Gas pressure is p in system, on the section (area is A) of piston 2
Apply pressure
F1=pA
Air pressure p constantly increases, F1Also constantly increase.In the case where friction is not considered, work as F1Applied to piston 2 more than spring 3
Plus restoring force F when, piston 2 starts caudad 13 direction movement, and the part of gas pressure relief slot 4 then is exposed into valve body 1
Inner chamber so that pressure entrance 12 is communicated exposed to the gas pressure relief slot 4 of inner chamber by this part with the external world, and relief valve starts pressure release.
If pressure p continues to increase, piston 2 continues caudad 13 movement, and the area of exposed gas pressure relief slot 4 is bigger, and pressure release is also just faster.Assuming that
The length of exposure of gas pressure relief slot 4 is x, and the coefficient of elasticity of spring is k, and spring 3 is provided when gas pressure relief slot 4 is just communicated with pressure entrance 12
Restoring force size be F0, the restoring force size that spring 3 is provided is F, then
F=F0+kx
In the case of considering that air pressure p fluctuates, have
F=F1
Then as known from the above, when relief valve is operated in pressure release state, x=(A/k) p-F0/k。
Wherein, x is that 0 or negative value show that relief valve is not operated under relief mode.It follows that pressure release in the relief valve
The aperture of groove 4 is linear with system working pressure p, and easily push away must increase the coefficient of elasticity k of spring 3 (will spring 3
Change the spring of more " hard " into), the initial compression amount that increases spring 3, the distance for increasing gas pressure relief slot 4 and pressure entrance 12 and reduction
The sectional area A of piston 2 can increase the air pressure that system starts pressure release.
When system pressure reduces to a certain extent, piston 2 is moved to the direction of pressure entrance 12, again by pressure entrance 12
Isolate with gas pressure relief slot 4, pressure release terminates.
From above procedure, the relief valve can stablize the air pressure obtained with device of air near a predetermined value, it is to avoid be
System pressure fluctuation.
When ensureing that piston 2 is moved in the length range of gas pressure relief slot 4, spring 3 is in elastic limit.The length of gas pressure relief slot 4
Degree scope is the pressure release stroke of piston 2.
It should be noted that tail end 13 is closed not necessarily, only it is to be counted for ease of processing, as long as spring 3 can be resisted against
Tail end 13, even if there is the extraneous hole of connection, influence is also showed no sign of on the work of the relief valve.
Embodiment two
The structure and operation principle of the relief valve provided with reference to Fig. 4, the present embodiment are similar with embodiment one.Difference exists
In, three equally distributed gas pressure relief slots 4 are provided with valve body 1, each bar gas pressure relief slot 4 is still each flat with the inner chamber axis of valve body 1
OK.
Embodiment three
The structure and operation principle of the relief valve provided with reference to Fig. 5 and Fig. 6, the present embodiment are similar with embodiment one.Area
It is not that the quantity of gas pressure relief slot 4 of bar shaped on valve body is four and is uniformly distributed, and respectively with the inner chamber axis of valve body 1 into one
Angle, i.e., the center line of each gas pressure relief slot 4 is at an acute angle with inner chamber axis.In fact, only needing gas pressure relief slot 4 to be not perpendicular to lumen shaft
Line ground annular sets, also not with inner chamber diameter parallel is to meet condition.Now, when piston 2 is moved in pressure release stroke, gas pressure relief slot
The area on the 4 external boundaries of communicating valve for being used for pressure release still changes therewith, and analysis process and result of calculation are similar with embodiment one, no
Repeat again.
Example IV
With reference to Fig. 5 and Fig. 6, the relief valve that the present embodiment is provided has the thin-walled tubular of relief valve in similar embodiment one
Valve body 1, but tail end 13 is opened, without closing.Valve body 1 has the inner chamber of a column, and is offered on the wall of valve body 1 parallel
In two equally distributed gas pressure relief slots 4 of inner chamber axis.The inner chamber of valve body 1 is provided with a piston 2, and piston 2 can be moved back and forth along inner chamber.
Two drag hooks 21 are relatively set with the piston 2, and two drag hooks 21 stretch out valve body 1 by gas pressure relief slot 4, and hook is provided with spring 3,
Spring 3 is extension spring.Two other ends of spring 3 are then both connected on valve body 1.Spring 3 is in extended state, so as to pass through
Drag hook 21 exerts a force to piston 2, and drag hook 21 is resisted against one end of the nearly pressure entrance 12 of gas pressure relief slot 4.Piston need to be ensured in gas pressure relief slot 4
Spring 3 is in its elastic limit when being moved in length range.
Analytical calculation process is similar with embodiment one, slightly.Easily push away must increase the coefficient of elasticity k of spring 3 (will spring 3
Change the spring of more " hard " into), the incipient extension amount that increases spring 3, the distance for increasing gas pressure relief slot 4 and pressure entrance 12 and reduction
The sectional area A of piston 2 can increase the air pressure that system starts pressure release.
Embodiment five
The pressure-relief valve structure and operation principle provided with reference to Fig. 9, the present embodiment are similar with embodiment two.Difference exists
In the tail end 13 of valve body 1 is not closed, but an adjusting pressuring knob 14, adjusting pressuring knob are stamped on open thin-walled tubular structure
14 are threadedly attached on tail end 13.Against on the piston 2, the other end is resisted against on adjusting pressuring knob 14 one end of spring 3.Pass through
Adjusting pressuring knob 14 is rotated to different directions, you can the initial compression amount of adjustment spring 3, and then relief valve is set start pressure release
System pressure.
The outer surface of adjusting pressuring knob 14 is provided with anti-slip veins.
Preferred embodiment of the present utility model described in detail above.
Embodiment in the utility model is only used for illustrating the utility model, does not constitute to right
Limitation, other substantial equivalent replacements that those skilled in that art are contemplated that, in the utility model protection domain
It is interior.
Claims (11)
1. a kind of relief valve, it is characterised in that including valve body, piston and spring, the valve body has a cylindrical interior volume, the work
Plug is arranged at the inner chamber with being reciprocally moveable；The valve body offers the gas pressure relief slot of at least one strip, the gas pressure relief slot
Connect the outside of the inner chamber and the valve body, and center line any point tangent line and the inner chamber of the gas pressure relief slot axis
It is parallel or at an acute angle；The inner chamber two ends are respectively pressure entrance and tail end, and the piston separates the pressure entrance and described
Gas pressure relief slot；The spring connects the piston and the valve body, and the spring effect is in the reply force direction of the piston
Point to the pressure entrance.
2. relief valve according to claim 1, it is characterised in that the spring is helical spring.
3. relief valve according to claim 2, it is characterised in that the spring is compression spring, the spring one end is supported
By the tail end, the other end is against the piston.
4. relief valve according to claim 2, it is characterised in that the spring is compression spring, the tail end is arranged with
Adjusting pressuring knob, the adjusting pressuring knob is connected with the valve body screw thread, and the spring one end is supported against the adjusting pressuring knob, the other end
By the piston.
5. relief valve according to claim 4, it is characterised in that the adjusting pressuring knob outer surface is provided with anti-slip veins.
6. relief valve according to claim 1, it is characterised in that the spring is extension spring.
7. relief valve according to claim 6, it is characterised in that the piston is connected with drag hook, and the drag hook is through described
Gas pressure relief slot stretches out the valve body, and the spring one end is connected to the drag hook, and the other end is connected to the valve body.
8. relief valve according to claim 1, it is characterised in that also including stop device, the stop device is arranged at
Between the piston and the pressure entrance, the stroke for limiting the piston.
9. relief valve according to claim 8, it is characterised in that the stop device is to protrude from the surface of internal cavity
Be resisted against the piston on the spacing block set by spacing block set, the restoring force effect of the spring.
10. relief valve according to claim 9, it is characterised in that the spacing block set is annular.
11. relief valves according to claim 1, it is characterised in that the quantity of the gas pressure relief slot is two, three or four
Bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621110332.6U CN206206716U (en) | 2016-10-10 | 2016-10-10 | Relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621110332.6U CN206206716U (en) | 2016-10-10 | 2016-10-10 | Relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206716U true CN206206716U (en) | 2017-05-31 |
Family
ID=58762183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621110332.6U Expired - Fee Related CN206206716U (en) | 2016-10-10 | 2016-10-10 | Relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206206716U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091346A (en) * | 2017-06-08 | 2017-08-25 | 苏州金钜松机电有限公司 | The slow pressure check-valves of one kind |
| CN111623566A (en) * | 2020-06-16 | 2020-09-04 | 龙川纽恩泰新能源科技发展有限公司 | One-way refrigerating system throttle valve |
-
2016
- 2016-10-10 CN CN201621110332.6U patent/CN206206716U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091346A (en) * | 2017-06-08 | 2017-08-25 | 苏州金钜松机电有限公司 | The slow pressure check-valves of one kind |
| CN111623566A (en) * | 2020-06-16 | 2020-09-04 | 龙川纽恩泰新能源科技发展有限公司 | One-way refrigerating system throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |