CN106050776A - Hydraulic bypass with adjustable piston type bidirectional pressure relief valve - Google Patents
Hydraulic bypass with adjustable piston type bidirectional pressure relief valve Download PDFInfo
- Publication number
- CN106050776A CN106050776A CN201610513493.8A CN201610513493A CN106050776A CN 106050776 A CN106050776 A CN 106050776A CN 201610513493 A CN201610513493 A CN 201610513493A CN 106050776 A CN106050776 A CN 106050776A
- Authority
- CN
- China
- Prior art keywords
- relief valve
- hydraulic pressure
- shell body
- piston
- plunger type
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/025—Pressure reducing valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
-
- 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
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a hydraulic bypass with an adjustable piston type bidirectional pressure relief valve. The hydraulic bypass is connected to a hydraulic main path and is characterized in that the hydraulic bypass with the adjustable piston type bidirectional pressure relief valve comprises a hydraulic bypass left section, a hydraulic bypass right section and the adjustable piston type bidirectional pressure relief valve connected between the hydraulic bypass left section and the hydraulic bypass right section; and the adjustable piston type bidirectional pressure relief valve comprises an outer shell, an inner shell, a piston, two springs, two adjusting blocks and two adjusting nuts. The hydraulic bypass has the advantages of being capable of conducting bidirectional pressure relief, simple in structure, stable in performance, short in pressure relief time, high in pressure relief speed, high in precision and good in leakproofness.
Description
Technical field
The present invention relates to the hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve.
Background technology
At radiator, cooling system, hydraulic system, lubricating system, fluid drive system, power system, the machinery of lathe
Main shaft, machining center and liquid etc.；In system above, liquid has some impact, pulse, instantaneous pressures in flow process
Greatly, instantaneous delivery is big etc. harsh wants condition for peace, and the fluid used in winter and severe cold area machinery especially just opens at machinery
Time dynamic, viscosity is big, poor fluidity, with great impact power, affects the paralysis of whole machinery, machining center.In order to make pressure put down
Weighing apparatus, well discharges pressure, other equipment or other components and parts will not bring damage and scrap, and has typically meeting to exist on the market
Hold and on susceptible to plugging hydraulic pressure main road, set up hydraulic pressure bypass, but relief valve is set in hydraulic pressure bypass so that system pressure balances,
Safeguards system safety.But relief valve on the market is all unidirectional relief valve, installation process needs set direction, separately
Can not be applicable to outward on the pipeline that two-way circulates, and pressure pressure release value can not be set.Therefore seek one and can carry out double
To pressure release, simple in construction, stable performance, the short speed of venting duration is fast, precision is high, the band adjusting flexible plunger type of good airproof performance double
Bypass particularly important to the hydraulic pressure of pressure relief valve.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, it is provided that it is steady that one can carry out double-direction relief, simple in construction, performance
Fixed, the short speed of venting duration is fast, precision is high, by the hydraulic pressure of the band adjusting flexible plunger type bidirection press relief valve of good airproof performance
Road.
The object of the present invention is achieved like this:
A kind of hydraulic pressure bypass of band adjusting flexible plunger type bidirection press relief valve, it is connected in parallel on hydraulic pressure main road, it is characterised in that
Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve includes that hydraulic pressure bypasses left section, hydraulic pressure bypasses right section and be connected to
Adjusting flexible plunger type bidirection press relief valve between the two；
Described adjusting flexible plunger type bidirection press relief valve includes shell body, inner housing, piston, two springs, two regulating blocks
And in two adjusting nuts, described shell body lateral arrangement, described shell body, form the shell body fluid of a lateral direction penetrating
Passage, the middle part of described shell body is provided with Fluid passageways chamber, and the internal diameter in Fluid passageways chamber is more than outside shell body fluid passage
Footpath, Fluid passageways intracavity is fixedly installed one piece and separates ring flat-plate, separates ring flat-plate and Fluid passageways chamber is separated to form two streams in left and right
Chamber, body passageway half, left section of described shell body is symmetrically arranged with a nut groove with right section, and described piston is horizontally set at shell
The middle part of body fluid passage, the most from inside to outside sets gradually spring, regulation in the shell body fluid passage of the piston left and right sides
Block and inner housing, the outer end of two springs connects the inner of two regulating blocks respectively, and the outer section of two regulating blocks is revolved respectively
Being equipped with two adjusting nuts, regulating block and adjusting nut threaded engagement, adjusting nut is limited in nut groove, the inner of regulating block
Leaving gap between face and shell body, leave gap between outer face and the inner housing of regulating block, described piston is two ends, left and right
The hollow structure of opening, described piston include piston shell, the middle part of described piston shell be provided with one piece be vertically arranged every
Plate, the inside of piston is divided into two the piston fluid passages being in communication with the outside respectively in left and right, is positioned at about dividing plate two by dividing plate
The fluid bore being arranged symmetrically with it is provided with on the piston shell of side.
The outer end inner wall of inner housing is provided with connection screw thread.
Hollow out at the shell body of adjusting nut front and rear surfaces, the outer surface of adjusting nut is provided with graduation mark.
The internal diameter separating ring flat-plate is consistent with the internal diameter of shell body fluid passage.
The external diameter of spring mates with the internal diameter of shell body fluid passage.
Described fluid bore is circular layout on piston shell.
The fluid bore of the every side of dividing plate is provided with multi-turn.
The fluid bore of high order end is not more than the horizontal of Fluid passageways half chamber to the lateral separation between the fluid bore of low order end
Distance.
Described piston. two ends, left and right be provided with the step coordinated with spring.
It is provided with inner seal ring, between the outer section inwall inner housing of regulating block between inner segment outer wall and the shell body of regulating block
It is provided with exterior seal ring.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention have can carry out double-direction relief, simple in construction, stable performance, the short speed of venting duration is fast, precision is high, close
The advantage that envelope property is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the internal structure schematic diagram of adjusting flexible plunger type bidirection press relief valve.
Fig. 3 is the contour structures schematic diagram of adjusting flexible plunger type bidirection press relief valve.
Fig. 4 is the section plan of housing.
Fig. 5 is the section plan of piston.
Fig. 6 is that the plane of adjusting flexible plunger type bidirection press relief valve partly cuts open explosive view.
Fig. 7 is that the solid of adjusting flexible plunger type bidirection press relief valve partly cuts open explosive view.
Fig. 8 is the schematic diagram of embodiment 1.
Fig. 9 is the schematic diagram of embodiment 2.
Wherein:
Shell body 701, shell body fluid passage 701.1, Fluid passageways chamber 701.2, separation ring flat-plate 701.3, nut groove 701.4
Inner housing 702
Piston 703, piston shell 703.1, dividing plate 703.2, fluid bore 703.3, step 703.4, piston fluid passage 703.5
Spring 704
Regulating block 705
Adjusting nut 706
Connecting bolt 707
Inner seal ring 708
Exterior seal ring 709.
Detailed description of the invention
See Fig. 1 ~ Fig. 9, the hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve that the present invention relates to, it
Being connected in parallel on hydraulic pressure main road, the hydraulic pressure bypass of band adjusting flexible plunger type bidirection press relief valve includes that hydraulic pressure bypasses left section, hydraulic pressure
Bypassing right section and be connected to adjusting flexible plunger type bidirection press relief valve between the two, hydraulic pressure bypasses by left section and hydraulic pressure
Right section of road uses with adjusting flexible plunger type bidirection press relief valve threadeds.
Described adjusting flexible plunger type bidirection press relief valve, it includes shell body 701, inner housing 702,703, two, piston
704, two regulating blocks 705 of spring and two adjusting nuts 706, described shell body 701 lateral arrangement, described shell body 701
The shell body fluid passage 701.1 of interior one lateral direction penetrating of formation, the middle part of described shell body 701 is provided with Fluid passageways chamber
701.2, the internal diameter in Fluid passageways chamber 701.2 is more than the external diameter of shell body fluid passage 701.1, solid in Fluid passageways chamber 701.2
Surely being provided with one piece and separate ring flat-plate 701.3, the internal diameter separating ring flat-plate 701.3 is consistent with the internal diameter of shell body fluid passage 701.1,
Separate ring flat-plate 701.3 and Fluid passageways chamber 701.2 is separated to form two Fluid passageways half chambeies, left and right, a left side for described shell body 701
Section is symmetrically arranged with a nut groove 701.4 with right section.Described piston 703 is horizontally set at shell body fluid passage 701.1
Middle part, the most from inside to outside sets gradually spring 704, regulating block in the shell body fluid passage 701.1 of piston 703 left and right sides
705 and inner housing 702, the external diameter of spring 704 mates with the internal diameter of shell body fluid passage 701.1.Outside two springs 704
End connects the inner of two regulating blocks 705 respectively, and in the outer section of two regulating blocks 705, rotation is equipped with two adjusting nuts 706 respectively,
Hollow out at the shell body 701 of adjusting nut 706 front and rear surfaces, the outer surface of adjusting nut 706 is provided with graduation mark, regulating block
705 with adjusting nut 706 threaded engagement, adjusting nut 706 is limited in nut groove 701.4, and putting adjusting nut 706 by rotation can
To regulate the lateral separation of regulating block 705, thus regulate the elastic potential energy of spring 704, fluid shell fluid outside can be controlled
Pressure release value in passage 701.1.Inner housing 702 is fixed, in the outer end of inner housing 702 by connecting bolt 707 with shell body 701
Wall is provided with connection screw thread, is provided with inner seal ring 708, regulating block between inner segment outer wall and the shell body 701 of regulating block 705
It is provided with exterior seal ring 709, between inner face and the shell body 701 of regulating block 705 between the outer section inwall inner housing 702 of 705
Leave gap, between outer face and the inner housing 702 of regulating block 705, leave gap.
Described piston 703 is the hollow structure of left and right both ends open, and described piston 703 includes piston shell 703.1, described
The middle part of piston shell 703.1 is provided with one piece of dividing plate being vertically arranged 703.2, and the inside of piston 703 is separated by dividing plate 703.2
The piston fluid passage 703.5 being in communication with the outside respectively for two, left and right, is positioned at the piston shell of dividing plate 703.2 left and right sides
Being provided with the fluid bore 703.3 being arranged symmetrically with on 703.1, described fluid bore 703.3 is circular layout on piston shell 703.1,
The fluid bore 703.3 of the every side of dividing plate 703.2 can be provided with multi-turn, circle fluid bore 703.3 a to low order end of high order end
Lateral separation between one circle fluid bore 703.3 is not more than the lateral separation in Fluid passageways half chamber.The left and right two of described piston 703
End is provided with the step 703.4 coordinated with spring 704.
A kind of method of work of the hydraulic pressure bypass of band adjusting flexible plunger type bidirection press relief valve:
First according to the setting pressure of fluid, adjusting nut is adjusted, thus the elastic potential energy of spring is adjusted,
The final pressure release value controlled in fluid shell fluid passage outside；
When hydraulic pressure main road is unobstructed, the pressure at the two ends, left and right of adjusting flexible plunger type bidirection press relief valve is equal, and piston is in
Housing center position, the partition position of piston is corresponding with the position separating ring flat-plate of housing, and piston does not do action；
Embodiment 1, when liquid flows from left to right and hydraulic pressure main road is obstructed, adjusting flexible plunger type bidirection press relief valve
Left end pressure is more than right-hand member pressure, owing to the pressure in the piston fluid passage on the left of dividing plate is more than the piston fluid on the right side of dividing plate
Pressure in passage, fluid forces dividing plate moves right, the fluid bore position so that piston also moves right, on the left of dividing plate
When Fluid passageways half intracavity on right side, the fluid that pressure is bigger passes through fluid bore stream in the piston fluid passage in left side
Go out Fluid passageways half intracavity to right side, flow to the most again in the piston fluid passage on right side, thus reach the mesh of pressure release
, now the spring in left side is in extended state, and the spring on right side is in compressive state, until the pressure on the left of dividing plate and right side
Equal, piston is put in order in situ, and hydraulic pressure main road returns unobstructed.
Embodiment 2, when liquid flows from left to right and hydraulic pressure main road is obstructed, adjusting flexible plunger type bidirection press pressure release
The right-hand member pressure of valve is more than left end pressure, owing to the pressure in the piston fluid passage on the right side of dividing plate is more than the piston on the left of dividing plate
Pressure in fluid passage, fluid forces dividing plate is moved to the left, the fluid so that piston is also moved to the left, on the right side of dividing plate
When hole is positioned at Fluid passageways half intracavity in left side, the fluid that pressure is bigger passes through fluid in the piston fluid passage on right side
Hole flows out to Fluid passageways half intracavity in left side, flow in the piston fluid passage in left side the most again, thus reaches pressure release
Purpose, now the spring on right side is in extended state, and the spring in left side is in compressive state, until on the left of dividing plate and right side
Pressure is equal, and hydraulic pressure main road returns unobstructed.
Claims (10)
1. the hydraulic pressure of a band adjusting flexible plunger type bidirection press relief valve bypasses, and it is connected in parallel on hydraulic pressure main road, and its feature exists
In band adjusting flexible plunger type bidirection press relief valve hydraulic pressure bypass include hydraulic pressure bypass left section, hydraulic pressure bypass right section and connect
In adjusting flexible plunger type bidirection press relief valve between the two；
Described adjusting flexible plunger type bidirection press relief valve include shell body (701), inner housing (702), piston (703), two
Spring (704), two regulating blocks (705) and two adjusting nuts (706), described shell body (701) lateral arrangement, described outside
Forming the shell body fluid passage (701.1) of a lateral direction penetrating in housing (701), the middle part of described shell body (701) is arranged
Having Fluid passageways chamber (701.2), the internal diameter of Fluid passageways chamber (701.2) is more than the external diameter of shell body fluid passage (701.1), stream
It is fixedly installed one piece in chamber, body passageway (701.2) and separates ring flat-plate (701.3), separate ring flat-plate (701.3) by Fluid passageways chamber
(701.2) being separated to form two Fluid passageways half chambeies, left and right, left section of described shell body (701) is symmetrically arranged with one with right section
Nut groove (701.4), described piston (703) is horizontally set at the middle part of shell body fluid passage (701.1), and piston (703) is left
The most from inside to outside set gradually in the shell body fluid passage (701.1) of right both sides spring (704), regulating block (705) and
Inner housing (702), the outer end of two springs (704) connects the inner of two regulating blocks (705), two regulating blocks (705) respectively
Outer section on respectively rotation be equipped with two adjusting nuts (706), regulating block (705) and adjusting nut (706) threaded engagement, regulate spiral shell
Female (706) are limited in nut groove (701.4), leave gap between inner face and the shell body (701) of regulating block (705), adjust
Leaving gap between outer face and the inner housing (702) of locking nub (705), described piston (703) is the hollow of left and right both ends open
Structure, described piston (703) includes that piston shell (703.1), the middle part of described piston shell (703.1) are provided with one piece vertically
The dividing plate (703.2) arranged, the inside of piston (703) is divided into what two, left and right was in communication with the outside respectively by dividing plate (703.2)
Piston fluid passage (703.5), is positioned on the piston shell (703.1) of dividing plate (703.2) left and right sides to be provided with and is arranged symmetrically with
Fluid bore (703.3).
The hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve the most according to claim 1, its feature exists
Outer end inner wall in inner housing (702) is provided with connection screw thread.
The hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve the most according to claim 1, its feature exists
In shell body (701) the place hollow out of adjusting nut (706) front and rear surfaces, the outer surface of adjusting nut (706) is provided with graduation mark.
The hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve the most according to claim 1, its feature exists
Consistent with the internal diameter of shell body fluid passage (701.1) in the internal diameter separating ring flat-plate (701.3).
The hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve the most according to claim 1, its feature exists
Mate with the internal diameter of shell body fluid passage (701.1) in the external diameter of spring (704).
The hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve the most according to claim 1, its feature exists
It is circular layout on piston shell (703.1) in described fluid bore (703.3).
The hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve the most according to claim 1, its feature exists
Fluid bore (703.3) in the every side of dividing plate (703.2) is provided with multi-turn.
The hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve the most according to claim 1, its feature exists
Fluid bore (703.3) to the lateral separation between the fluid bore (703.3) of low order end in high order end is not more than Fluid passageways half
The lateral separation in chamber.
The hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve the most according to claim 1, its feature exists
In described piston (703). two ends, left and right be provided with the step (703.4) coordinated with spring (704).
The hydraulic pressure bypass of a kind of band adjusting flexible plunger type bidirection press relief valve the most according to claim 1, its feature exists
It is provided with inner seal ring (708), the outer section of regulating block (705) between the inner segment outer wall and shell body (701) of regulating block (705)
Exterior seal ring (709) it is provided with between inwall inner housing (702).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513493.8A CN106050776B (en) | 2016-06-30 | 2016-06-30 | Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513493.8A CN106050776B (en) | 2016-06-30 | 2016-06-30 | Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050776A true CN106050776A (en) | 2016-10-26 |
| CN106050776B CN106050776B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610513493.8A Active CN106050776B (en) | 2016-06-30 | 2016-06-30 | Hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN106050776B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456981A (en) * | 2020-05-22 | 2020-07-28 | 湖南特达液压有限公司 | Built-in bidirectional pressure relief oil cylinder |
| US11920720B2 (en) * | 2021-05-14 | 2024-03-05 | Saudi Arabian Oil Company | System and method for mitigating water hammer by looping surge pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033375A (en) * | 1976-05-07 | 1977-07-05 | J. I. Case Company | Two-way fluid pressure relief valve |
| DE3916260A1 (en) * | 1989-05-19 | 1990-11-22 | Voss Richard Grubenausbau | Small pressure restricting valve with high rate of flow - has tubular sleeve forming valve piston containing interconnecting throttle bore |
| JP2005265230A (en) * | 2004-03-17 | 2005-09-29 | Tgk Co Ltd | Bidirectional expansion device |
| JP2007321960A (en) * | 2006-06-05 | 2007-12-13 | Shiroki Corp | Two-way valve and door check device |
| CN102537449A (en) * | 2011-12-07 | 2012-07-04 | 三一重型装备有限公司 | Bidirectional self-adaptive damping valve |
| CN202402737U (en) * | 2012-01-06 | 2012-08-29 | 福建雪人股份有限公司 | Oil pressure soft bypass valve |
| CN102788054A (en) * | 2012-07-27 | 2012-11-21 | 柳州柳工挖掘机有限公司 | Pilot hydraulic control system with oil changing function |
| CN203604300U (en) * | 2013-11-26 | 2014-05-21 | 徐州重型机械有限公司 | Screw position adjusting structure and hydraulic valve set value adjusting device |
| CN205136707U (en) * | 2015-09-29 | 2016-04-06 | 哈尔滨东安发动机（集团）有限公司 | Pressure adjustable relief valve |
| CN205937276U (en) * | 2016-06-30 | 2017-02-08 | 江苏金荣森制冷科技有限公司 | Hydraulic pressure bypass of piston type double directional pressure relief valve with adjustable area |
-
2016
- 2016-06-30 CN CN201610513493.8A patent/CN106050776B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033375A (en) * | 1976-05-07 | 1977-07-05 | J. I. Case Company | Two-way fluid pressure relief valve |
| DE3916260A1 (en) * | 1989-05-19 | 1990-11-22 | Voss Richard Grubenausbau | Small pressure restricting valve with high rate of flow - has tubular sleeve forming valve piston containing interconnecting throttle bore |
| JP2005265230A (en) * | 2004-03-17 | 2005-09-29 | Tgk Co Ltd | Bidirectional expansion device |
| JP2007321960A (en) * | 2006-06-05 | 2007-12-13 | Shiroki Corp | Two-way valve and door check device |
| CN102537449A (en) * | 2011-12-07 | 2012-07-04 | 三一重型装备有限公司 | Bidirectional self-adaptive damping valve |
| CN202402737U (en) * | 2012-01-06 | 2012-08-29 | 福建雪人股份有限公司 | Oil pressure soft bypass valve |
| CN102788054A (en) * | 2012-07-27 | 2012-11-21 | 柳州柳工挖掘机有限公司 | Pilot hydraulic control system with oil changing function |
| CN203604300U (en) * | 2013-11-26 | 2014-05-21 | 徐州重型机械有限公司 | Screw position adjusting structure and hydraulic valve set value adjusting device |
| CN205136707U (en) * | 2015-09-29 | 2016-04-06 | 哈尔滨东安发动机（集团）有限公司 | Pressure adjustable relief valve |
| CN205937276U (en) * | 2016-06-30 | 2017-02-08 | 江苏金荣森制冷科技有限公司 | Hydraulic pressure bypass of piston type double directional pressure relief valve with adjustable area |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456981A (en) * | 2020-05-22 | 2020-07-28 | 湖南特达液压有限公司 | Built-in bidirectional pressure relief oil cylinder |
| CN111456981B (en) * | 2020-05-22 | 2024-05-17 | 湖南特达液压有限公司 | Built-in bidirectional pressure relief oil cylinder |
| US11920720B2 (en) * | 2021-05-14 | 2024-03-05 | Saudi Arabian Oil Company | System and method for mitigating water hammer by looping surge pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106050776B (en) | 2017-11-07 |
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