WO2012005390A1 - 압력제어밸브 - Google Patents
압력제어밸브 Download PDFInfo
- Publication number
- WO2012005390A1 WO2012005390A1 PCT/KR2010/004377 KR2010004377W WO2012005390A1 WO 2012005390 A1 WO2012005390 A1 WO 2012005390A1 KR 2010004377 W KR2010004377 W KR 2010004377W WO 2012005390 A1 WO2012005390 A1 WO 2012005390A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- flow path
- poppet
- main piston
- pilot
- Prior art date
Links
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- 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
- F16K17/10—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 auxiliary valve for fluid operation of the main valve
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- 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
- F15B13/024—Pressure relief 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
- 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
-
- 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
-
- 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
-
- 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
- F16K17/065—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 with differential piston
-
- 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
- F16K17/10—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 auxiliary valve for fluid operation of the main valve
- F16K17/105—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 auxiliary valve for fluid operation of the main valve using choking or throttling means to control the fluid operation of the main valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
- Y10T137/7764—Choked or throttled pressure type
- Y10T137/7766—Choked passage through main valve head
Definitions
- the present invention relates to a pressure control valve. More specifically, the present invention relates to a pressure control valve including a stopper having a damping prevention flow path at a contact adjacent to an internal flow path of the main piston so that the pressure oil inside the main piston can be smoothly drained into a gap between the stopper contact surfaces.
- pressure control valves are used within a set pressure of the hydraulic circuit. In case of changing work equipment according to working condition, it is used to reset set pressure of relief valve required by working equipment.
- a high pressure side flow path through which a high pressure hydraulic fluid passes from a pump is formed on one side, and a tank side flow path through which the hydraulic oil of the high pressure side flow path is drained to a tank is formed on an outer circumference.
- a sleeve 10 a poppet 20 for controlling a flow rate flowing from the pump side to the tank side while moving inside the sleeve 10, a poppet spring 30 elastically supporting the poppet 20, and a sleeve 10.
- the fastener 142 is fixed to the 130.
- the present invention has been invented to solve the above problems, and the pressure oil inside the piston flows smoothly to the drain, thereby preventing the control pressure from dropping momentarily, so that the set pressure is equal to the actual pressure. It is an object to provide a pressure control valve.
- the present invention is coupled to the sleeve 10, the inlet in which the hydraulic fluid flows from the hydraulic pump, the tank flow path communicating with the hydraulic tank is formed so as to be slidably movable in the sleeve 10, the flow path between the inlet port and the tank flow path Poppet 20 that opens and closes, a poppet spring 30 that elastically supports the flow path between the inlet port and the tank flow path by pressing the poppet, and the poppet 20 so that a set pressure is formed in the pressure chamber in the sleeve 10.
- a valve seat 50 installed opposite to the pilot seat, a pilot poppet 40 for opening a flow path of the valve seat to drain hydraulic oil in the pressure chamber to a hydraulic tank when a high pressure exceeding a set pressure is generated in the pressure chamber, and a pilot poppet 40
- the pilot poppet spring 80 for elastically supporting the flow path of the valve seat 50 in a closed state by pressurizing
- the pilot signal pressure coupled to the sleeve 10 and supplied with pilot signal pressure from the outside
- the flow path for preventing damping and eliminating the sticking phenomenon has a cross-sectional shape in the shape of a V-shaped groove, the cross-sectional shape in the circumferential direction of the V-shaped groove every 90 ° or 180 ° direction, the cross-sectional shape in the shape of a V In the longitudinal direction of the groove is preferably formed.
- FIG. 1 is a cross-sectional view of a pressure control valve according to the prior art.
- 2 is a graph showing pilot pressure versus pressure.
- FIG 3 is a cross-sectional view of the pressure control valve according to the present invention.
- 5 is a cross-sectional view for explaining the case where the pilot pressure passage is closed during overload operation.
- FIG. 6 is a cross-sectional view for explaining the case where the pilot pressure passage is opened when the pressure set value is changed.
- FIG. 2 is a cross-sectional view of the configuration of the pressure control valve according to the present invention.
- 3 is an enlarged cross-sectional view showing an enlarged main portion of the present invention.
- 4 shows that the right end of the stopper 120 is processed.
- the stopper 120 processed as described above serves to control the stroke of the main piston 100 and connects the hydraulic oil in the main piston 100 to the drain by flowing the gap between the main piston 100 and the stopper 120. Perform the function.
- the main piston 100 and the stopper 120 are not separated by X, but are in close contact with each other, thereby showing a sealing effect between the surface and the surface.
- the pressure oil inside the piston does not flow to the drain and has a force pushing the main piston 100 to the left.
- FIG. 3 is a graph showing a normal pressure b when a damping phenomenon occurs and a pressure abnormality (a) at which the control pressure drops instantaneously and when there is no stick phenomenon.
- the cross-sectional shape of the stopper 120 has a V-shaped cross section at a contact portion adjacent to an inner flow path of the main piston 100 so that the pressurized oil in the main piston 100 can be drained smoothly. It can be seen that the flow path is formed in the groove shape. In order that the oil pressure inside the main piston 100 can drain more smoothly, the flow path has a cross-sectional shape of the V-shaped groove every 90 ° or 180 ° in the circumferential direction of the V-shaped groove. Grooves may be formed in the longitudinal direction.
- FIG. 5 is a cross-sectional view illustrating a case in which the pilot pressure passage is closed during overload operation.
- the pressure oil discharged from the pump flows into the room D via the orifice in the poppet 20.
- the poppet 20 is in close contact with the surface of the valve seat 50 inside the sleeve 10 due to the area difference.
- the pilot poppet 40 opens and the oil flows through tank 1 via line 1 in room D and into the tank. do.
- the pressure oil at the inlet side of the sleeve 10 is momentarily dropped while the pilot poppet 40 is opened, so that the pressure oil flows to the tank while the poppet 20 moves to the right in the drawing.
- the set pressure at this time influences the set pressure by changing the force of the pilot poppet spring 80 by adjusting the guide 90.
- FIG. 6 is a cross-sectional view for explaining a case in which the pilot pressure passage is opened when the pressure set value is changed.
- the pressure oil of the pilot line when the pressure oil reaches the main piston 100 through line 2 generated inside the adjusting plug 130, the main piston 100 moves to the right in the drawing.
- the pressure setting value applied to the pump is reduced while changing the pressure setting conditions.
- Plate 150 is configured to be rotated 360 degrees can be connected to the desired piping port and the drain port is installed separately, the pressure oil discharged from the pump passes through the orifice inside the poppet (20) pilot piston (60) Is waiting in Room D.
- the pressure oil does not flow to the tank side by the action of the backup ring 160, O-ring 170.
- the pilot pressure is adjusted and at the same time the main piston 120 is moved to the right in the drawing is a structure that the set pressure of the pilot poppet spring 80 is reduced.
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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
Description
Claims (2)
- 유압펌프로부터 작동유가 유입되는 유입구와, 유압탱크와 연통되는 탱크유로가 형성되는 슬리브;슬리브 내부에 슬라이딩 이동가능하게 결합되고, 유입구와 탱크유로사이의 유로를 개폐하는 포펫;상기 포펫을 가압하여 유입구와 탱크유로사이의 유로를 닫힌상태로 탄성지지하는 포펫 스프링;상기 슬리브 내의 압력실에 설정압력이 형성되도록 포펫과 대향되게 설치되는 밸브시트;상기 압력실 내에 설정압력을 초과하는 고압 발생시 밸브시트의 유로를 개방시켜 압력실 내의 작동유를 유압탱크로 드레인시키는 파일럿 포펫;상기 파일럿 포펫을 가압하여 밸브시트의 유로를 닫힌상태로 탄성지지하는 파일럿 포펫스프링;상기 슬리브에 결합되고 외부로부터 파일럿 신호압이 공급되는 파일럿 신호압에 따라 상기 압력실 내의 설정압력을 가변 조정하는 메인 피스톤;상기 메인 피스톤 내부의 압유가 원활하게 드레인 될 수 있도록, 상기 메인 피스톤 내부유로에 인접하는 접촉부에 댐핑을 방지하고, 스틱현상을 없애기 위한 유로를 구비한 스토퍼;상기 가이드에 결합되고, 상기 메인 피스톤을 지지하는 스프링의 설정압력을 조정하는 조정플러그; 및상기 플러그의 외측면에 회전가능하게 결합되고, 상기 파일럿 포트와 연통되는 통로가 형성되는 연결구를 포함하는 것을 특징으로 하는 압력제어밸브.
- 제 1항에 있어서,상기 댐핑을 방지하고, 스틱현상을 없애기 위한 유로는 단면 형상이 V자형 홈 형태로서, 상기 단면 형상이 V자형 홈 형태의 원주 방향으로 90°또는 180°방향마다, 상기 단면 형상이 V자형 홈 형태의 길이방향으로 요홈이 형성된 것을 특징으로 하는 압력제어밸브.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/808,198 US8733391B2 (en) | 2010-07-06 | 2010-07-06 | Valve for controlling pressure |
CN201080067746.4A CN102959298B (zh) | 2010-07-06 | 2010-07-06 | 用于控制压力的阀 |
PCT/KR2010/004377 WO2012005390A1 (ko) | 2010-07-06 | 2010-07-06 | 압력제어밸브 |
KR1020127033039A KR101689673B1 (ko) | 2010-07-06 | 2010-07-06 | 압력제어밸브 |
EP10854464.4A EP2592319B1 (en) | 2010-07-06 | 2010-07-06 | Valve for controlling pressure |
JP2013518205A JP5714704B2 (ja) | 2010-07-06 | 2010-07-06 | 圧力制御弁 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/KR2010/004377 WO2012005390A1 (ko) | 2010-07-06 | 2010-07-06 | 압력제어밸브 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012005390A1 true WO2012005390A1 (ko) | 2012-01-12 |
Family
ID=45441353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2010/004377 WO2012005390A1 (ko) | 2010-07-06 | 2010-07-06 | 압력제어밸브 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8733391B2 (ko) |
EP (1) | EP2592319B1 (ko) |
JP (1) | JP5714704B2 (ko) |
KR (1) | KR101689673B1 (ko) |
CN (1) | CN102959298B (ko) |
WO (1) | WO2012005390A1 (ko) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2012121427A1 (ko) | 2011-03-07 | 2012-09-13 | 볼보 컨스트럭션 이큅먼트 에이비 | 파이프 레이어용 유압회로 |
EP2853753A4 (en) | 2012-05-21 | 2016-05-25 | Volvo Constr Equip Ab | HYDRAULIC SYSTEM FOR A CONSTRUCTION MACHINE |
KR101763282B1 (ko) | 2013-02-05 | 2017-07-31 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계의 압력 제어밸브 |
US9970571B2 (en) * | 2013-06-20 | 2018-05-15 | Shimadzu Corporation | Pressure control valve and control valve |
CN106232907B (zh) | 2014-04-29 | 2018-11-02 | 沃尔沃建造设备有限公司 | 用于工程机械的流量控制阀 |
KR200486163Y1 (ko) | 2016-07-05 | 2018-04-09 | 훌루테크 주식회사 | 건설기기용 메인 컨트롤밸브 어셈블리 |
US10437269B1 (en) * | 2017-10-06 | 2019-10-08 | Sun Hydraulics, Llc | Electrohydraulic counterbalance and pressure relief valve |
US10794510B1 (en) | 2017-12-20 | 2020-10-06 | Sun Hydraulics, Llc | Electrohydraulic counterbalance and pressure relief valve |
CN107939767A (zh) * | 2017-12-28 | 2018-04-20 | 邵立坤 | 一种补油缓冲阀 |
CN107939766A (zh) * | 2017-12-28 | 2018-04-20 | 邵立坤 | 一种补油缓冲阀 |
US10495117B1 (en) | 2018-04-17 | 2019-12-03 | Sun Hydraulics, Llc | Electrohydraulic counterbalance and pressure relief valve |
CN108412922B (zh) * | 2018-05-07 | 2019-11-15 | 西安航空制动科技有限公司 | 一种飞机液压刹车系统压力调节器 |
US10683879B1 (en) | 2019-01-22 | 2020-06-16 | Sun Hydraulics, Llc | Two-port electrohydraulic counterbalance valve |
US10775812B1 (en) * | 2019-01-22 | 2020-09-15 | Sun Hydraulics, Llc | Inverse proportional pressure relief valve |
CN110259752A (zh) * | 2019-07-15 | 2019-09-20 | 宁波克泰液压有限公司 | 螺纹插装式先导减压二级溢流阀 |
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KR100961431B1 (ko) * | 2008-02-25 | 2010-06-09 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 압력제어밸브 |
CN201232784Y (zh) * | 2008-07-17 | 2009-05-06 | 贵州枫阳液压有限责任公司 | 负载保持阀 |
KR100950571B1 (ko) * | 2009-02-27 | 2010-04-01 | (주)동우정공 | 건설중장비용 릴리프밸브 |
-
2010
- 2010-07-06 US US13/808,198 patent/US8733391B2/en active Active
- 2010-07-06 KR KR1020127033039A patent/KR101689673B1/ko active IP Right Grant
- 2010-07-06 CN CN201080067746.4A patent/CN102959298B/zh active Active
- 2010-07-06 JP JP2013518205A patent/JP5714704B2/ja active Active
- 2010-07-06 WO PCT/KR2010/004377 patent/WO2012005390A1/ko active Application Filing
- 2010-07-06 EP EP10854464.4A patent/EP2592319B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050178443A1 (en) * | 2004-02-12 | 2005-08-18 | Volvo Construction Equipment Holding | Relief valve |
US6986362B2 (en) * | 2004-02-25 | 2006-01-17 | Volvo Construction Equipment Holding Sweden Ab | Pilot operated relief valve |
US20070056632A1 (en) * | 2005-09-15 | 2007-03-15 | Volvo Construction Equipment Holding Sweden Ab | Hydraulic relief valve |
Also Published As
Publication number | Publication date |
---|---|
EP2592319A4 (en) | 2017-02-15 |
US20130112291A1 (en) | 2013-05-09 |
KR101689673B1 (ko) | 2016-12-26 |
US8733391B2 (en) | 2014-05-27 |
CN102959298A (zh) | 2013-03-06 |
JP2013529767A (ja) | 2013-07-22 |
EP2592319A1 (en) | 2013-05-15 |
EP2592319B1 (en) | 2020-12-09 |
JP5714704B2 (ja) | 2015-05-07 |
KR20130095195A (ko) | 2013-08-27 |
CN102959298B (zh) | 2015-05-06 |
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