CN100387881C - Pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker - Google Patents
Pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker Download PDFInfo
- Publication number
- CN100387881C CN100387881C CNB2006100420840A CN200610042084A CN100387881C CN 100387881 C CN100387881 C CN 100387881C CN B2006100420840 A CNB2006100420840 A CN B2006100420840A CN 200610042084 A CN200610042084 A CN 200610042084A CN 100387881 C CN100387881 C CN 100387881C
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- valve body
- pressure
- valve core
- 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
Links
Images
Landscapes
- Servomotors (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The present invention relates to a pressure-compensated valve in a hydraulic device, particularly to a pressure compensation valve for a hydraulic mechanism of an ultra-high-voltage breaker. A tubular inlet and a tubular outlet are arranged on a valve body, and a valve core chamber is arranged in the valve body between the inlet and the outlet. The valve core chamber is cylindrical, the inner part of the valve core chamber is provided with valve cores which are cylindrical, and a ring groove is arranged at a midsection of each valve core. Through holes which are parallel to an axial cord of the valve core are arranged on the valve core arranged at one side of the ring groove, and a spring seat is arranged at the top end of the valve core arranged at the other side of the ring groove. A spring is arranged between the spring seat and the valve body, vents are arranged on the valve body arranged at one side of the spring, and the valve core chamber is communicated with the outside of the valve body by the vents. The present invention can automatically compensate the fluctuation of input pressure, so that the output pressure is relatively stable without additional energy and a sensor. The present invention has the advantages of simple structure, stable and reliable operation, and fast reaction speed. The initial operating pressure can be arranged according to the requirements of different occasions.
Description
Technical field
The present invention relates to the pressure-compensated valve, the especially pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker that use in a kind of hydraulic pressure installation.
Background technique
The operation mechanism of circuit breaker can be divided into various ways such as electromagnetic operating mechanism, spring operating mechanism, hydraulic actuating mechanism, pneumatic operation mechanism.Wherein hydraulic actuating mechanism power is big, action is fast, the characteristics of smooth operation, and the power that needs is little, is specially adapted to breaker in extra high voltage, has vast potential for future development.For example, my another patent application: " extra-high-voltage breaker permanent-magnet locked hydraulic operating mechanism ", number of patent application is 200520127492.7, and the powered live axle motion that this operating device utilizes hydraulic pressure installation to provide is finished branch, feed motion thereby drive circuit breaker.This operating device adopts two accumulators that power source is provided, and during proper functioning, oil hydraulic pump is pressed oil to main accumulator and standby accumulator respectively by one-way valve, makes two accumulators all keep certain pressure.When oil hydraulic pump breaks down when quitting work, the energy that provides in the accumulator is provided, operation mechanism still can be operated repeatedly, but there is pressure reduction in the hydraulic system during owing to twice operation, at this moment fluid pressure changes greatly in the accumulator, twice separating brake produced the stability that different speed influences circuit breaker, have identical speed, must carry out pressure compensation automatically oil hydraulic circuit for guaranteeing twice separating brake.In addition, hydraulic actuating mechanism needs continuous action sometimes, during as unsuccessful reclosing, hydraulic mechanism is minimum wants double separating brake, at this moment fluid pressure changes greatly in the accumulator, and twice separating brake produced different speed, thereby influences the stability of circuit breaker, for guaranteeing that twice separating brake has identical speed, also must carry out pressure compensation automatically to oil hydraulic circuit.
Summary of the invention
The purpose of this invention is to provide a kind of pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker, this recuperation valve does not need extra power promptly can keep the relatively stable of output terminal fluid flow under the situation that incoming pressure takes place to fluctuate.
For achieving the above object, the present invention adopts following technological scheme:
Pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker of the present invention, comprise valve body, valve body is provided with the inlet of tubulose, outlet and end cap, be provided with spool chamber in the valve body between entrance and exit, spool chamber is cylindric, spool is installed in the spool chamber, plunger, be fixedly connected with connecting rod between spool and the plunger, the diameter of connecting rod is less than spool, and spool is cylindric, has the through hole parallel with valve core axis on the spool, the other end that plunger is relative with connecting rod has spring seat, in the spring housing between spring seat and the end cap spring is installed, has pore on the end cap, this pore is with spring housing and valve body external communications.
The inlet channel cross section of above-mentioned valve body is circular, and the channel cross-section of outlet is trapezoidal.
Between spring and end cap, have the adjustment pad.
The parallel axes of above-mentioned entrance and exit staggers, can block when spool is moved in spool chamber the outlet and can not conceal the entrance.
After adopting technique scheme, the present invention has following advantage:
(1) can compensate the fluctuation of incoming pressure automatically, keep the relatively stable of output terminal fluid flow.；
(2) do not need the extra energy and sensor, simple in structure, stable and reliable operation, reaction velocity is fast and can carry out the adjusting of pressure compensation degree;
(3) have wide range of applications, except that being used for the power hydraulic pressure operation mechanism, also can be used for control flow rate use in the hydraulic system;
Description of drawings
Fig. 1 is the structural representation of one embodiment of the present of invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1.
Embodiment
As shown in drawings, pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker of the present invention comprises valve body 1, valve body 1 is provided with inlet 2, outlet 3 and the end cap 12 of tubulose, 2 channel cross-sections that wherein enter the mouth are for circular, the channel cross-section of outlet 3 is trapezoidal, the channel connection of inlet 2 and outlet 3 becomes hydraulic oil channel, and inlet 2 and outlet 3 places have and other pipeline flange connecting dishes.At inlet 2 with export in the valve body 1 between 3 and be provided with spool chamber 4, spool chamber 4 be cylindric, and is vertical with hydraulic oil channel, and spool 5 and plunger 11 are installed in the spool chamber 4, and it is fixedly connected to pass through connecting rod 6 between spool 5 and the plunger 11.The diameter of connecting rod 6 is less than spool 5.Spool 5 is cylindric, has the through hole parallel with valve core axis 7 on the spool 5.Plunger 11 and the connecting rod 6 relative the other ends have spring seat 8, in the spring housing between spring seat 8 and the end cap 12 spring 9 is installed, have pore 10 on the end cap 12, this pore 10 is spring housing and valve body 1 external communications, makes the stroke of plunger 11 and export 3 aperture only relevant with the pressure at inlet 2 places.
Inlet 2 and outlet 3 parallel axes stagger, and can block when spool 5 move in spool chamber 4 to export 3 and can not conceal the entrance 2.As shown in Figure 1, when spool 5 is positioned at the leftmost side of spool chamber 4, align with the left side of outlet 3 in the right side of spool 5.When spool 5 moved to by side, the left side of inlet 2 can not be crossed in the right side of spool 5.Like this, no matter how spool 5 moves, and the aperture at 2 places that can guarantee to enter the mouth remains unchanged, and just changes the aperture at outlet 3 places.
During work, hydraulic oil 2 enters valve body 1 from entering the mouth, and discharges from exporting 3 again, and spring 9 withstands on the leftmost side of spool chamber 4 with spool 5, this moment spool 5 with the aperture maximum that exports the hydraulic oil channel that constitutes between 3 the passage; The pressure at 2 places increases if enter the mouth, and owing to the two ends conducting of through hole 7 with spool 5, the pressure at spool 5 two ends is identical, and the pressure in the spring housing of plunger 11 1 sides is communicated to atmosphere by pore 10, and is identical with barometric pressure; Like this, the pressure of hydraulic oil is with the spring chamber of plunger 11 pressed rightwards, and drive spool 5 moves together.And the pressure at 2 places that enter the mouth is big more, and the distance that spool 5 moves to the right is also big more; The result that spool 5 moves to the right reduces the relative opening degree of the hydraulic oil channel that constitutes between the passage of spool 5 and outlet 3, keeps hydraulic fluid flow rate basicly stable.Otherwise when the pressure at inlet 2 places reduced, the pressure that hydraulic oil acts on plunger 11 reduced, and spool 5 is moved to the left; The result that spool 5 moves to the left increases the relative opening degree of the hydraulic oil channel that constitutes between the passage of spool 5 and outlet 3, still can keep hydraulic fluid flow rate basicly stable constant.When being connected on this pressure-compensated valve in the circuit breaker hydraulic operating mechanism, can be in the certain fluctuation of pressure scope of accumulator, the adjusting by recuperation valve makes that circuit breaker keeps dividing, closing speed stable.
To export 3 channel cross-section in the present embodiment and be designed to trapezoidally, and can make the displacement distance of spool 5 and the relation curve between the pressure compensation more reasonable, and adjust compensativity as required, and make the flow of output terminal more stable.
Certainly, in order to adapt to the needs of different occasions, the channel cross-section shape of outlet 3 also can be designed to other shape; Perhaps also the channel cross-section alteration of form of inlet 2 can be become other shapes.
By regulating the thickness of adjusting pad 13, can set initial actuating pressure according to the requirement of different occasions.
Claims (4)
1. pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker, comprise valve body (1), valve body (1) is provided with the inlet (2) of tubulose, outlet (3) and end cap (12), it is characterized in that: be provided with spool chamber (4) in the valve body (1) between inlet (2) and outlet (3), spool chamber (4) is cylindric, spool (5) is installed in the spool chamber (4), plunger (11), be fixedly connected with connecting rod (6) between spool (5) and the plunger (11), the diameter of connecting rod (6) is less than spool (5), spool (5) is cylindric, have the through hole parallel (7) on the spool (5) with valve core axis, the other end that plunger (11) is relative with connecting rod (6) has spring seat (8), in the spring housing between spring seat (8) and the end cap (12) spring (9) is installed, have pore (10) on the end cap (12), this pore (10) is with spring housing and valve body (1) external communications.
2. pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker according to claim 1 is characterized in that: inlet (2) channel cross-section of valve body (1) is for circular, and the channel cross-section of outlet (3) is trapezoidal.
3. pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker according to claim 1 is characterized in that: have between spring (9) and end cap (12) and adjust pad (13).
4. according to claim 1 or 2 or 3 described pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker, it is characterized in that: the parallel axes of inlet (2) and outlet (3) staggers, and can block outlet (3) and can not conceal the entrance (2) when spool (5) is moved in spool chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100420840A CN100387881C (en) | 2006-01-20 | 2006-01-20 | Pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100420840A CN100387881C (en) | 2006-01-20 | 2006-01-20 | Pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1804410A CN1804410A (en) | 2006-07-19 |
| CN100387881C true CN100387881C (en) | 2008-05-14 |
Family
ID=36866528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100420840A Expired - Fee Related CN100387881C (en) | 2006-01-20 | 2006-01-20 | Pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100387881C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100545492C (en) * | 2006-12-11 | 2009-09-30 | 黄金伦 | Recuperation valve |
| CN101307836B (en) * | 2008-07-17 | 2010-06-02 | 刘雁 | Automatic pressure controlling valve |
| CN101737538B (en) * | 2008-11-10 | 2013-03-27 | 北京航空航天大学 | Flow control valve device and design method for flow control type hole |
| CN103161633A (en) * | 2011-12-14 | 2013-06-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | High-pressure fuel feeding pump |
| CN102644777A (en) * | 2012-03-28 | 2012-08-22 | 特劳克森特里克专利应用有限公司 | Bypass valve |
| CN102889258B (en) * | 2012-09-20 | 2015-05-13 | 三一重工股份有限公司 | Pressure compensation valve and engineering machinery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2132897Y (en) * | 1992-01-23 | 1993-05-12 | 机械电子工业部第三设计研究院 | Pipeline safety valve |
| JPH08272455A (en) * | 1995-03-31 | 1996-10-18 | Nippon Spindle Mfg Co Ltd | Flow rate control valve |
| US6047727A (en) * | 1997-09-19 | 2000-04-11 | Kabushiki Kaisha Neriki | Valve assembly for gas cylinder and pressure reducing valve used therefor |
| CN1396396A (en) * | 2001-07-16 | 2003-02-12 | 沈锝桓 | Hydraulic press flow adjustment device |
| CN1508448A (en) * | 2002-12-04 | 2004-06-30 | 株式会社岛津制作所 | Flow-control valve |
| CN2874092Y (en) * | 2006-01-20 | 2007-02-28 | 王光顺 | Hydraulic mechanism pressure compensation valve of special high pressure brake |
-
2006
- 2006-01-20 CN CNB2006100420840A patent/CN100387881C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2132897Y (en) * | 1992-01-23 | 1993-05-12 | 机械电子工业部第三设计研究院 | Pipeline safety valve |
| JPH08272455A (en) * | 1995-03-31 | 1996-10-18 | Nippon Spindle Mfg Co Ltd | Flow rate control valve |
| US6047727A (en) * | 1997-09-19 | 2000-04-11 | Kabushiki Kaisha Neriki | Valve assembly for gas cylinder and pressure reducing valve used therefor |
| CN1396396A (en) * | 2001-07-16 | 2003-02-12 | 沈锝桓 | Hydraulic press flow adjustment device |
| CN1508448A (en) * | 2002-12-04 | 2004-06-30 | 株式会社岛津制作所 | Flow-control valve |
| CN2874092Y (en) * | 2006-01-20 | 2007-02-28 | 王光顺 | Hydraulic mechanism pressure compensation valve of special high pressure brake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1804410A (en) | 2006-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100387881C (en) | Pressure compensation valve for hydraulic mechanism of ultra-high-voltage breaker | |
| CN102287412B (en) | Ultra-high pressure proportional relief valve | |
| CN102620037B (en) | Integrated pressure regulating switching valve | |
| CN104197046B (en) | A kind of banked direction control valves of band off-load protection | |
| CN201475456U (en) | Liquid constant flow regulating valve | |
| CN201487221U (en) | Automatic constant pressure and constant flow valve | |
| CN202301250U (en) | Ultrahigh pressure proportional relief valve | |
| CN105905096B (en) | Combination of gases control valve for Retarder | |
| CN204647118U (en) | Solenoid valve assembly, vibration damper and vehicle suspension system | |
| CN110671520B (en) | One-way pressure reducing valve with safety function | |
| CN2874092Y (en) | Hydraulic mechanism pressure compensation valve of special high pressure brake | |
| CN101655111B (en) | Novel overlapped speed regulating valve | |
| CN108869429A (en) | A method of control one-directional fluid flow | |
| CN105422537B (en) | Pressure-increasing overflow valve | |
| CN219299660U (en) | Slide valve type high-pressure overflow unidirectional integrated valve | |
| CN104405710A (en) | Constant pressure valve for controlling pressure and flow of variable plunger pump | |
| CN110005652A (en) | Interior integrated small flow multi-function control valve | |
| CN108266413B (en) | Asymmetric electro-hydrostatic actuator based on pressure selection valve | |
| US20150053074A1 (en) | Fluid-Pressure Drive Device for Circuit Breaker | |
| CN216554720U (en) | Buffer hydraulic cylinder | |
| CN214037063U (en) | Variable pump bidirectional control valve assembly and variable pump | |
| CN104196794A (en) | Pressure reducing valve | |
| CN106015674B (en) | A kind of cartridge balanced valve | |
| CN103727245A (en) | Hydraulic valve, hydraulic system and engineering machinery | |
| CN201269334Y (en) | Overlapping-mounted one-way throttle valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20110120 |