CN103410537A - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN103410537A CN103410537A CN2013103624661A CN201310362466A CN103410537A CN 103410537 A CN103410537 A CN 103410537A CN 2013103624661 A CN2013103624661 A CN 2013103624661A CN 201310362466 A CN201310362466 A CN 201310362466A CN 103410537 A CN103410537 A CN 103410537A
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- China
- Prior art keywords
- spool
- valve element
- valve
- pressure
- sealing ring
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Abstract
The invention discloses a safety valve. The safety valve is composed of a spring, a valve element, a valve body, a sealing ring and a joint, and a regulating end cap (1), a spring socket (2), the spring (3), the valve element (4), the valve body (5), the sealing ring (6), and the joint (7) are orderly arranged from left to right; the liquid outlet C of the valve element is separated from the liquid outlet D of the valve body by the sealing ring; since an E hole plays a role of communication, the valve element is a differential piston structure, the actual pressure action area is radial section area of the valve element push rod part 4a, the pressure control is unrelated with the flow control, that is, the valve element push rod part and the valve element overflow part can be respectively and independently designed to solve the problem that the demands on the diameter of the valve element from the pressure and the flow are opposite; when the system pressure is raised, the high pressure liquid is used for pushing the valve element to move left after entering from the P port, the liquid outlet of the valve element is communicated with the liquid outlet of the valve body, the system is unloaded; when the system pressure is reduced, a reset spring is used for pushing the valve element to move right so as to separate the liquid outlet of the valve element from the liquid outlet of the valve body, and the system is maintained at a rated pressure.
Description
Technical field
The present invention relates to a kind of mine hydraulic bracket safety valve.
Background technology
Safety valve is a kind ofly in system pressure overload situation, to discharge rapidly the valve that is loaded onto rated pressure, generally is arranged on hydraulic jack (jack) upper, be used to preventing system overload, guarantees security of system.When system pressure overloaded, system high pressure liquid-driving spool overcame spring force and is moved to the left, and spool fluid hole C moves past sealing ring and communicates with valve body fluid hole D, and highly pressurised liquid discharges rapidly; In uninstall process, when system pressure descends, spring promotes spool and moves to right, spool fluid hole C reduces with respect to sealing ring aperture aperture, when system pressure drops to rated pressure, spool fluid hole C moves to the sealing ring right side, and sealing ring cuts off spool fluid hole C and valve body fluid hole D, makes system pressurize under rated pressure.At present, the safety valve valve core structure mostly is the uniform section column structure, when valve requires large flow, the long-pending requirement of corresponding spool radial section enough could meet traffic requirement greatly, and sectional area is when larger, the rigidity of the spring that uses and physical dimension are with regard to corresponding increase, to such an extent as to the physical dimension of safety valve and cost increase thereupon; The physical dimension of controlling and reducing valve requires to reduce rigidity and the size of spring, will dwindle accordingly the spool radial section long-pending, makes the spool area of passage reduce not reach traffic requirement.Two kinds of designing requirements are just in time opposite to the long-pending size of spool radial section, and when at first design must meet traffic requirement, the volume of valve will be larger, do not reach the purpose of optimal design.
Summary of the invention
Valve core structure changes a step-like column structure into, by function, be divided into 4a spool pusher section and 4b spool overcurrent part (as accompanying drawing), 4a and 4b boundary end face bore some aperture E, and aperture E two ends all are full of uniform pressure liquid, make spool become a differential piston structure.Now highly pressurised liquid is that the radial section of spool pusher section is long-pending to the practical function area of spool, and long-pending irrelevant with the radial section of spool overcurrent part, so just pressure is controlled and flow-control is separately carried out, and both are uncorrelated mutually.Design work can be carried out respectively pressure and flow design as required, and to determine respectively the diameter of spool pusher section and spool overcurrent part, both are independent of each other.Under the uniform pressure operating mode, spool pusher section radial section amasss and in enough strength and stiffness situations, reduces as far as possible guaranteeing, just can reduce rigidity and the physical dimension of back-moving spring; Equally, under the uniform pressure operating mode, use the spool push rod of same sectional area just can use the spring of same structure size, and irrelevant with the flow of valve, so just can greatly reduce the kind that spring is used.
The accompanying drawing explanation
Accompanying drawing: safety valve structure figure;
In figure: 1. regulate plug, 2. spring housing, 3. spring, 4. spool, be divided into 4a spool pusher section and 4b spool overcurrent part, 5. valve body, 6. sealing ring, 7. joint by function.
The specific embodiment
As shown in drawings, safety valve of the present invention, comprise by institutes such as spring, spool, valve body, sealing ring and joints and forming, and is followed successively by from left to right 1. and regulates plug, 2. spring housing, 3. spring, 4. spool, 5. valve body, 6. sealing ring, 7. joint; Described valve body is with spring housing, joint respectively by being threaded, and spool liquid outlet C and valve body liquid outlet D are separated by sealing ring, and system is under rated pressure, and no liquid is overflowed.When system pressure rose, highly pressurised liquid was entered by joint right-hand member P mouth, overcame spring force promotion spool and moved to left, and because both sides, E hole all are full of uniform pressure liquid, spool is the differential piston structure.When spool liquid outlet C crossed sealing ring 6, spool liquid outlet C just connected with valve body liquid outlet D, the system unloading; In uninstall process, when system pressure descends, back-moving spring promotes spool and moves to right, spool liquid outlet C reduces with respect to the aperture of sealing ring, when system pressure drops to rated pressure, spool liquid outlet C gets back to the sealing ring right side, and spool liquid outlet C and valve body liquid outlet D just sealed circle cut off, and system remains on rated pressure.Because spool is a differential piston structure, the actual pressure active area is only that the radial section of spool push rod is long-pending, in sufficient intensity, rigidity situation, reduce as far as possible the spool rod diameter and just can reduce spring rate and physical dimension, and the area of passage that the flow design of valve only need make spool overcurrent part enough greatly and make flow passage structure reasonable, and it is irrelevant with the spool rod diameter, the control of the pressure of valve and flow-control just can design respectively like this, unrelated.The design principles of this kind structure is: appropriate design spool overcurrent part just can reach the optimal design of valve arrangement under minimum spool push rod sectional area.
Claims (3)
1. safety valve, comprise by institutes such as spring, spool, valve body, sealing ring and joints and forming: spool 4 is the differential piston structure, by function, be divided into 4a spool pusher section and 4b spool overcurrent part (as accompanying drawing), 4a and 4b boundary end face bore some aperture E, and aperture E makes E two ends, hole be full of uniform pressure liquid; It is characterized in that: after system pressure rose, highly pressurised liquid promotion spool overcame spring force and moves to left, and spool fluid hole C moves past sealing ring and communicates with valve body fluid hole D, the system unloading; In uninstall process, when system pressure descends, spring promotes spool and moves to right, until spool fluid hole C moves past sealing ring and valve body fluid hole D cuts off, the system pressurize.
2. a kind of safety valve according to claim 1, it is characterized in that: described spool is the differential piston structure, keeps two ends, E hole fluid pressure identical by aperture E, to form the differential piston structure.
3. a kind of safety valve according to claim 1, it is characterized in that: described spool actual pressure active area is only relevant to spool pusher section 4a diameter, and the flow of valve is only long-pending relevant to spool overcurrent part radial section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103624661A CN103410537A (en) | 2013-08-20 | 2013-08-20 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103624661A CN103410537A (en) | 2013-08-20 | 2013-08-20 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103410537A true CN103410537A (en) | 2013-11-27 |
Family
ID=49603571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103624661A Pending CN103410537A (en) | 2013-08-20 | 2013-08-20 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103410537A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925393A (en) * | 2014-04-22 | 2014-07-16 | 孙东奎 | Slide valve for mud pulse generator |
| CN105484784A (en) * | 2016-01-25 | 2016-04-13 | 巨隆集团芜湖兴隆液压有限公司 | Overflow safety valve |
| CN106969177A (en) * | 2017-05-15 | 2017-07-21 | 永嘉县信诚科技服务有限公司 | Straight through safety valve |
| CN109322689A (en) * | 2018-10-31 | 2019-02-12 | 辽宁工程技术大学 | A kind of erosion control hydraulic support pressure flow function control valve group |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4274435A (en) * | 1978-07-27 | 1981-06-23 | Thyssen Industrie Ag | Excess pressure valve particularly for a fluid pressure operated telescopic supporting element employed in underground mining |
| SU1204824A1 (en) * | 1984-05-08 | 1986-01-15 | Узловский Машиностроительный Завод Им.И.И.Федунца Производственного Объединения "Кран" | Controllable check valve |
| DE3935187A1 (en) * | 1989-10-23 | 1991-05-02 | Joern Dams Maschf | Hydraulic pit prop control value - has piston with three sets of holes for check blocking and pressure limiting valves |
| CN2222272Y (en) * | 1994-10-08 | 1996-03-13 | 李小示 | Hydraulic control one-way valve |
| CN2268136Y (en) * | 1996-10-25 | 1997-11-19 | 吴俊� | Hydraulic safety valve |
| CN201037425Y (en) * | 2006-11-13 | 2008-03-19 | 浙江丰隆液压元件有限公司 | Safety valve |
| CN201521309U (en) * | 2009-11-17 | 2010-07-07 | 胡斌杰 | Safety valve |
| CN201802419U (en) * | 2010-09-02 | 2011-04-20 | 巨隆集团芜湖兴隆液压有限公司 | Safety valve with pressure balancing cavity |
-
2013
- 2013-08-20 CN CN2013103624661A patent/CN103410537A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4274435A (en) * | 1978-07-27 | 1981-06-23 | Thyssen Industrie Ag | Excess pressure valve particularly for a fluid pressure operated telescopic supporting element employed in underground mining |
| SU1204824A1 (en) * | 1984-05-08 | 1986-01-15 | Узловский Машиностроительный Завод Им.И.И.Федунца Производственного Объединения "Кран" | Controllable check valve |
| DE3935187A1 (en) * | 1989-10-23 | 1991-05-02 | Joern Dams Maschf | Hydraulic pit prop control value - has piston with three sets of holes for check blocking and pressure limiting valves |
| CN2222272Y (en) * | 1994-10-08 | 1996-03-13 | 李小示 | Hydraulic control one-way valve |
| CN2268136Y (en) * | 1996-10-25 | 1997-11-19 | 吴俊� | Hydraulic safety valve |
| CN201037425Y (en) * | 2006-11-13 | 2008-03-19 | 浙江丰隆液压元件有限公司 | Safety valve |
| CN201521309U (en) * | 2009-11-17 | 2010-07-07 | 胡斌杰 | Safety valve |
| CN201802419U (en) * | 2010-09-02 | 2011-04-20 | 巨隆集团芜湖兴隆液压有限公司 | Safety valve with pressure balancing cavity |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925393A (en) * | 2014-04-22 | 2014-07-16 | 孙东奎 | Slide valve for mud pulse generator |
| CN105484784A (en) * | 2016-01-25 | 2016-04-13 | 巨隆集团芜湖兴隆液压有限公司 | Overflow safety valve |
| CN106969177A (en) * | 2017-05-15 | 2017-07-21 | 永嘉县信诚科技服务有限公司 | Straight through safety valve |
| CN109322689A (en) * | 2018-10-31 | 2019-02-12 | 辽宁工程技术大学 | A kind of erosion control hydraulic support pressure flow function control valve group |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131127 |