CN110529638A - A kind of two-stage pressure release direct-acting overflow valve - Google Patents
A kind of two-stage pressure release direct-acting overflow valve Download PDFInfo
- Publication number
- CN110529638A CN110529638A CN201910767277.XA CN201910767277A CN110529638A CN 110529638 A CN110529638 A CN 110529638A CN 201910767277 A CN201910767277 A CN 201910767277A CN 110529638 A CN110529638 A CN 110529638A
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- Prior art keywords
- level
- pressure
- valve
- spool
- spring
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- 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.)
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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
- F16K17/044—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 more than one spring
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to precision instrument technical fields, and disclose a kind of two-stage pressure release direct-acting overflow valve, including valve body and set up handle, the setting handle, which protrudes into the intracorporal one end of valve and is fixedly connected with, shores lid, the other side for shoring lid is set there are two concentric circles annular groove, second voltage regulation spring and level-one pressure spring are respectively equipped in two concentric grooves for shoring lid, the other end of the second voltage regulation spring is fixedly connected with second level spool, and the internal activity of the second level spool is socketed with valve rod.The present invention passes through in former secondary valve in-core pivot bush unit valve rod and level-one spool, and by the set pressure of level-one pressure spring control valve rod, the overflow valve can be divided into the preferential stage pressure set up by level-one pressure spring, the secondary pressure that second voltage regulation spring is set up, it may make second level set pressure system temporal pressure fluctuations below to open the aperture of pressure relief valve port preferentially by level-one spool with small valve port pressure release, reduce the vibration amplitude of system temporal pressure fluctuations.
Description
Technical field
The present invention relates to precision instrument technical field, specially a kind of two-stage pressure release direct-acting overflow valve.
Background technique
Direct-acting overflow valve is mainly made of valve body, spool, pressure spring and pressure regulating screw (or handle).In normality
Under, spool is tightly attached on valve seat under the action of pressure spring, and oil inlet and oil outlet are that obstructed (i.e. overflow valve is normally closed
Type).
When by overflow valve access system, hydraulic oil just generates an active force, the direction of power and spring force on spool
It is contrary, when inlet pressure be lower than overflow valve set pressure when, then spool is not turned on, and inlet pressure is main at this time
Depending on outer load.When oil liquid active force is greater than spring force, spool is opened, and oil liquid flows back to fuel tank from overflow port.Spring force with
The increase of the amount of opening of overflow valve and increase, until balance each other with hydraulic action.When overflow valve starts overflow, oil inlet
Pressure at mouthful is basically stable on setting, to play the role of overflow pressure stabilizing.Pass through the pre- of pressure regulating screw adjustment spring
Decrement can set up the size of overflow valve oil pressure relief value.
Since the pressure of direct-acting overflow valve is mainly provided by spring rate, hydraulic coupling setting is higher, then spring rate is got over
Greatly, since valve port area is larger, when valve port opening is slightly changed, then cause biggish pressure oscillation, cause system hydraulic coupling
Shakiness, so direct moving type hydraulic valve with its sensitivity due to pilot operated compound relief valve, be usually used in safety valve, in low-pressure low flow, this
Application proposes a kind of direct-acting overflow valve, it is intended to solve the overflow valve stability problem under system pressure fluctuation.
Summary of the invention
Existing insufficient in use for the existing direct-acting overflow valve proposed in background technique, the present invention provides
A kind of two-stage pressure release direct-acting overflow valve has the advantages of second level pressure release movement ensures the stationarity of overflow pressure relief, solves
The problems mentioned above in the background art.
The invention provides the following technical scheme: a kind of two-stage pressure release direct-acting overflow valve, including valve body and setting handle, institute
State and set up handle and protrude into the intracorporal one end of valve and be fixedly connected with and shore lid, the other side for shoring lid set there are two concentric loop
Slot is respectively equipped with second voltage regulation spring and level-one pressure spring, the second voltage regulation in two concentric grooves for shoring lid
The other end of spring is fixedly connected with second level spool, and the internal activity of the second level spool is socketed with valve rod, the second level spool
One end be fixedly connected with hush panel, the other end of the second level spool is fixedly connected with the other end of level-one pressure spring, institute
The external fixing sleeve for stating valve rod is connected to one-step valve core, and the inside of the second level spool offers pressure relief valve port, the pressure relief valve port
It is adapted with the surface shape of level-one spool, the inner wall of the valve body is fixedly installed with valve seat, the mesoporous and second level of the valve seat
The external surface shape of spool is adapted.
Preferably, the pressure of the pressure of the level-one pressure spring press valve rod and second voltage regulation spring press second level spool
It is identical.
Preferably, the valve rod with shore lid a side contacts when, the side of the lucky hush panel and second level spool
One side contacts.
Preferably, the pressure relief valve port is identical as the tapered surface gradient of valve seat.
The present invention have it is following the utility model has the advantages that
1, the present invention in former secondary valve in-core pivot bush unit valve rod and level-one spool, and by level-one pressure spring by controlling
The overflow valve can be divided into preferential stage pressure, the second voltage regulation spring tune set up by level-one pressure spring by the set pressure of valve rod
Fixed secondary pressure may make second level set pressure system temporal pressure fluctuations below preferentially to open relief valve by level-one spool
The aperture of mouth reduces the vibration amplitude of system temporal pressure fluctuations with small valve port pressure release.
2, the present invention passes through the combination aperture of pressure relief valve port and valve seat, and system may make to encounter bigger hydraulic fluctuation
When, bigger aperture can be instantaneously opened, so that system restores pressure balance, the stabilization of safeguards system in the shortest time
Property.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
In figure: 1, valve body；2, valve deck；3, handle is set up；4, lid is shored；5, second voltage regulation spring；6, second level spool；7, valve
Bar；8, hush panel；9, level-one pressure spring；10, level-one spool；11, pressure relief valve port；12, valve seat；13, oil outlet.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of two-stage pressure release direct-acting overflow valve, including valve body 1, thread seal are connected to 1 end of valve body
Valve deck 2, thread seal is connected to the setting handle 3 inside valve deck 2, sets up one end that handle 3 protrudes into valve body 1 and be fixedly connected
Lid 4 is shored, is set in the other side for shoring lid 4 there are two concentric circles annular groove, wherein second voltage regulation spring 5 is socketed in outer groove, it is interior
Slot is socketed with level-one pressure spring 9, and the other end of second voltage regulation spring 5 is fixedly connected with second level spool 6, second level spool 6 it is interior
Portion's movable sleeve is connected to valve rod 7, and one end of second level spool 6 is fixedly connected with hush panel 8, the other end and level-one tune of second level spool 6
The other end of pressing spring 9 is fixedly connected, and the external fixing sleeve of valve rod 7 is connected to one-step valve core 10, and the inside of second level spool 6 offers
Pressure relief valve port 11, pressure relief valve port 11 are adapted with the surface shape of level-one spool 10, are fixedly installed with valve seat in the inner wall of valve body 1
12, the mesoporous of valve seat 12 is adapted with the external surface shape of second level spool 6, is opened up in the inner wall of valve body 1 there are two oil outlet 13.
It is now assumed that hydraulic coupling is gradually increasing in system used in the present invention, the course of work is described as follows:
It is identical with the set pressure of second voltage regulation spring 5 by the set pressure of level-one pressure spring 9,
When hydraulic coupling is under set pressure, the present invention is failure to actuate；
When hydraulic coupling is higher than the pressure set up, the active area due to opening second level spool 6 reduces pressure relief valve port 11
Port area, so level-one spool 10 is preferentially lifted off in pressure relief valve port 11 by hydraulic oil, hydraulic oil leads to out of pressure relief valve port 11
It crosses, then flows back to mailbox from oil outlet 13；
When hydraulic coupling is persistently higher than set pressure, it will push level-one spool 10 and leave pressure relief valve port 11, level-one tune completely
Pressing spring 9 reaches most compressed state, at this point, the end of valve rod 7 is adjacent to the side contacts for shoring lid 4, the side of hush panel 8
By an end closure of pressure relief valve port 11, hydraulic coupling will push hush panel 8 and 6 synchronizing moving of second level spool, and compress second voltage regulation bullet
Spring 5 opens the opening of valve seat 12, continues with big flow valve port pressure release；
Particularly, when system instantaneous pressure is more higher than set pressure, system can act on second level spool 6 and push valve seat 12 open
Valve port hereafter also will continue to effect level-one spool 10 and push the valve port of pressure relief valve port 11 open, so that valve seat 12 is not reaching most
Before big valve port, expand the aperture of instantaneous valve port by pressure relief valve port 11, thus, can safeguards system deal with the stabilization of instantaneous high pressure power
Property.
Wherein, the spring rate of second voltage regulation spring 5 is calculated by predetermined hydraulic pressure power P multiplied by the end area of second level spool 6, and
The spring rate of level-one pressure spring 9 is determined by predetermined hydraulic pressure power P multiplied by the end area of level-one spool 10.
Wherein, to ensure that second level sets up the design stability of pressure release, one end of valve rod 7 connects with the side bottom plate for shoring lid 4
When touching, the side of hush panel 8 just with a side contacts of second level spool 6.
Wherein, additional caused by preventing because of the successive impact turbulent of high pressure liquid stream to ensure that the liquid flow path direction of two-stage pressure release is consistent
Vibration, the tapered surface gradient of pressure relief valve port 11 and valve seat 12 is set identical.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of two-stage pressure release direct-acting overflow valve, including valve body (1) and setting handle (3), it is characterised in that: the setting hand
One end that handle (3) protrudes into valve body (1), which is fixedly connected with, shores lid (4), the other side for shoring lid (4) set there are two with one heart
Annular groove is respectively equipped with second voltage regulation spring (5) and level-one pressure spring (9) in two concentric grooves for shoring lid (4),
The other end of the second voltage regulation spring (5) is fixedly connected with second level spool (6), the internal activity set of the second level spool (6)
It is connected to valve rod (7), one end of the second level spool (6) is fixedly connected with hush panel (8), the other end of the second level spool (6)
It is fixedly connected with the other end of level-one pressure spring (9), the external fixing sleeve of the valve rod (7) is connected to one-step valve core (10), institute
The inside for stating second level spool (6) offers pressure relief valve port (11), the surface shape of the pressure relief valve port (11) and level-one spool (10)
Shape is adapted, and the inner wall of the valve body (1) is fixedly installed with valve seat (12), the mesoporous of the valve seat (12) and second level spool (6)
External surface shape be adapted.
2. a kind of two-stage pressure release direct-acting overflow valve according to claim 1, it is characterised in that: the level-one pressure spring
(9) pressure for pressing valve rod (7) is identical as second voltage regulation spring (5) the press pressure of second level spool (6).
3. a kind of two-stage pressure release direct-acting overflow valve according to claim 1, it is characterised in that: the valve rod (7) and top
When one side contacts of support lid (4), the side of the lucky hush panel (8) and a side contacts of second level spool (6).
4. a kind of two-stage pressure release direct-acting overflow valve according to claim 1, it is characterised in that: the pressure relief valve port (11)
It is identical as the tapered surface gradient of valve seat (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767277.XA CN110529638A (en) | 2019-08-20 | 2019-08-20 | A kind of two-stage pressure release direct-acting overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767277.XA CN110529638A (en) | 2019-08-20 | 2019-08-20 | A kind of two-stage pressure release direct-acting overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110529638A true CN110529638A (en) | 2019-12-03 |
Family
ID=68662409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910767277.XA Pending CN110529638A (en) | 2019-08-20 | 2019-08-20 | A kind of two-stage pressure release direct-acting overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110529638A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989709A (en) * | 2019-12-21 | 2020-04-10 | 郭冬梅 | Thread structure installation type pressure control device |
| CN111795033A (en) * | 2020-07-16 | 2020-10-20 | 中车青岛四方车辆研究所有限公司 | Direct-acting overflow valve |
| CN111810687A (en) * | 2020-06-15 | 2020-10-23 | 徐兴勇 | Pressure relief direct-acting overflow valve |
| CN112196809A (en) * | 2020-10-11 | 2021-01-08 | 台州仁青泵业有限公司 | Centrifugal pump discharge pressure relief device |
| CN112366585A (en) * | 2020-11-28 | 2021-02-12 | 扬州德云电气设备集团有限公司 | Explosion-proof device of inflatable switch cabinet |
| CN112546664A (en) * | 2020-11-29 | 2021-03-26 | 上海申亚动物保健品阜阳有限公司 | Supercritical fluid extraction system for traditional Chinese veterinary medicine rapid process |
| CN113074029A (en) * | 2021-04-14 | 2021-07-06 | 浙江尔格科技股份有限公司 | Oil pump pressure reducing valve and oil pump for internal combustion engine using same |
| WO2021134355A1 (en) * | 2019-12-30 | 2021-07-08 | 深圳迈瑞生物医疗电子股份有限公司 | Pressure limiting valve and anesthesia machine |
| CN113404522A (en) * | 2021-07-26 | 2021-09-17 | 郑州煤机综机设备有限公司 | Anti-expansion valve plug of hydraulic support upright post |
| CN115199631A (en) * | 2022-07-26 | 2022-10-18 | 靖江市飞天紧固件制造有限公司 | Pressure relief type bolt structure |
| CN116576280A (en) * | 2023-05-10 | 2023-08-11 | 上海交通大学 | Multistage pressure relief device and pressure relief method suitable for on-load tap-changer |
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| JPH08226841A (en) * | 1995-02-21 | 1996-09-03 | Osaka Gas Co Ltd | Gas meter |
| CN202171045U (en) * | 2011-08-12 | 2012-03-21 | 深圳市家乐士净水科技有限公司 | Reducing valve |
| JP2014009800A (en) * | 2012-07-03 | 2014-01-20 | Panasonic Corp | Check valve and water heater including the same |
| CN203926945U (en) * | 2014-06-12 | 2014-11-05 | 杭州三和电控设备有限公司 | A kind of one-way valve with pooling feature |
| CN107725844A (en) * | 2017-08-30 | 2018-02-23 | 武汉船用机械有限责任公司 | A kind of valve |
| CN108443545A (en) * | 2018-04-28 | 2018-08-24 | 河南航天液压气动技术有限公司 | Safety valve |
| CN109210241A (en) * | 2017-07-03 | 2019-01-15 | 芜湖美的厨卫电器制造有限公司 | Safety valve and water heater |
| CN208831826U (en) * | 2018-09-20 | 2019-05-07 | 新乡天诚航空科技有限公司 | A kind of High Abnormal Pressure self-closing reducing valve |
-
2019
- 2019-08-20 CN CN201910767277.XA patent/CN110529638A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0338853A2 (en) * | 1988-04-22 | 1989-10-25 | General Electric Company | Depressurization valve |
| JPH08226841A (en) * | 1995-02-21 | 1996-09-03 | Osaka Gas Co Ltd | Gas meter |
| CN202171045U (en) * | 2011-08-12 | 2012-03-21 | 深圳市家乐士净水科技有限公司 | Reducing valve |
| JP2014009800A (en) * | 2012-07-03 | 2014-01-20 | Panasonic Corp | Check valve and water heater including the same |
| CN203926945U (en) * | 2014-06-12 | 2014-11-05 | 杭州三和电控设备有限公司 | A kind of one-way valve with pooling feature |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989709A (en) * | 2019-12-21 | 2020-04-10 | 郭冬梅 | Thread structure installation type pressure control device |
| WO2021134355A1 (en) * | 2019-12-30 | 2021-07-08 | 深圳迈瑞生物医疗电子股份有限公司 | Pressure limiting valve and anesthesia machine |
| CN111810687A (en) * | 2020-06-15 | 2020-10-23 | 徐兴勇 | Pressure relief direct-acting overflow valve |
| CN111795033A (en) * | 2020-07-16 | 2020-10-20 | 中车青岛四方车辆研究所有限公司 | Direct-acting overflow valve |
| CN111795033B (en) * | 2020-07-16 | 2022-06-24 | 中车青岛四方车辆研究所有限公司 | Direct-acting overflow valve |
| CN112196809A (en) * | 2020-10-11 | 2021-01-08 | 台州仁青泵业有限公司 | Centrifugal pump discharge pressure relief device |
| CN112366585B (en) * | 2020-11-28 | 2022-06-14 | 扬州德云电气设备集团有限公司 | Explosion-proof device of inflatable switch cabinet |
| CN112366585A (en) * | 2020-11-28 | 2021-02-12 | 扬州德云电气设备集团有限公司 | Explosion-proof device of inflatable switch cabinet |
| CN112546664A (en) * | 2020-11-29 | 2021-03-26 | 上海申亚动物保健品阜阳有限公司 | Supercritical fluid extraction system for traditional Chinese veterinary medicine rapid process |
| CN113074029A (en) * | 2021-04-14 | 2021-07-06 | 浙江尔格科技股份有限公司 | Oil pump pressure reducing valve and oil pump for internal combustion engine using same |
| CN113404522A (en) * | 2021-07-26 | 2021-09-17 | 郑州煤机综机设备有限公司 | Anti-expansion valve plug of hydraulic support upright post |
| CN115199631A (en) * | 2022-07-26 | 2022-10-18 | 靖江市飞天紧固件制造有限公司 | Pressure relief type bolt structure |
| CN115199631B (en) * | 2022-07-26 | 2023-09-19 | 靖江市飞天紧固件制造有限公司 | Pressure relief type bolt structure |
| CN116576280A (en) * | 2023-05-10 | 2023-08-11 | 上海交通大学 | Multistage pressure relief device and pressure relief method suitable for on-load tap-changer |
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