CN201187598Y - Bistable permanent magnetism hydraulic valve for hydraulic spring operating mechanism - Google Patents
Bistable permanent magnetism hydraulic valve for hydraulic spring operating mechanism Download PDFInfo
- Publication number
- CN201187598Y CN201187598Y CNU2008200117284U CN200820011728U CN201187598Y CN 201187598 Y CN201187598 Y CN 201187598Y CN U2008200117284 U CNU2008200117284 U CN U2008200117284U CN 200820011728 U CN200820011728 U CN 200820011728U CN 201187598 Y CN201187598 Y CN 201187598Y
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- Prior art keywords
- valve
- iron core
- permanent magnet
- hydraulic
- valve body
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- 230000005389 magnetism Effects 0.000 title claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005192 partition Methods 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 38
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model relates to a bistable permanent magnet hydraulic valve used for a hydraulic spring controlling mechanism, which belongs to the field of a high voltage breaker switch. The utility model is disclosed aiming at solving the problems of the prior hydraulic valves that the structure is complex and failures of the operation are inclined to occur. The bistable permanent magnet hydraulic valve is composed of a valve body and a permanent magnet valve, wherein, a valve core is included in the valve body, the bistable permanent magnet valve is arranged at the right part of the valve body, a movable iron core is arranged inside, and an actuating lever on the movable iron core is connected with the valve core. The bistable permanent magnet valve comprises a magnetic yoke, a switch closing coil, the movable iron core, a permanent magnet ring and a switch opening coil, wherein, a separation wall is arranged in the magnetic yoke body, the switch opening coil is arranged at the left side of the separation wall, the switch closing coil is arranged at the right side thereof, and a permanent magnet body is arranged at the central part thereof; the movable iron core is arranged in the central space of the switch closing coil, the permanent magnet body and the switch opening coil, a left and a right connecting bars are respectively arranged at the left end and the right end of the movable iron core, the left connecting bar is connected with the valve core, and the right connecting bar penetrates through and out of the magnetic yoke body. An oil circuit communicated with the inner oil region of the valve body is arranged at the lower part of the valve body. The utility model has the advantages of simple structure, sensitive motion, security and reliability as well as long service life.
Description
Technical field
The utility model belongs to primary cut-out actuating technical field, the particularly bistable permanent magnetism hydraulic valve of using about hydraulic operating mechanism of high voltage circuit breaker.
Background technique
The current power transmission circuit is generally 126～800kV with the maximum operating voltage grade of circuit breaker, on the circuit breaker of this high pressure classes of applications, and the extensive use hydraulic pressure spring operating mechanism.Wherein hydrovalve is the vitals in the hydraulic pressure spring operating mechanism.Have three solenoid valves on the hydrovalve, wherein solenoid valve action during separating brake, another solenoid valve action during combined floodgate, remaining solenoid valve is the standby solenoid valve of separating brake.Utilize the break-make control oil channel passage of solenoid valve, change the flow direction of control fluid, and then control spool and move to the left or to the right, finally make connecting rod drive contact of breaker and realize separating brake or closing operation.Therefore hydrovalve is the key of hydraulic pressure spring operating mechanism reliability, the good and bad performance that directly influences primary cut-out of its performance.According to the experience of accumulation in the use of actual hydraulic pressure valve, existing hydrovalve is the following problem of easy appearance when work:
(1) need two solenoid valves to control spool respectively and move right operating process and control oil channel complexity left.
(2) solenoid valve has higher requirements to the medium cleanliness, and it is inapplicable to contain granular medium, through regular meeting the phenomenon of solenoid valve tripping is arranged, thereby influences the action of valve.
(3) sealing part is many, safety coefficient is low, is easy to generate outer leakage of oil.
(4) maintenance difficult, the hydrovalve spool action that hydraulic oil pollution thing deposition causes is not normal, and hydrovalve was lost efficacy.
The model utility content
For solving existing hydrovalve deficiency, it is a kind of simple in structure that the utility model provides, and component are few, and mechanical life is long, the reliability height, can with a kind of bistable permanent magnetism hydraulic valve of hydraulic spring mechanism perfect cooperation.
The technological scheme that its technical problem that solves the utility model adopts is: comprise valve body, has normal low pressure oil district in the valve body, the working oil district, normal high pressure oil area I, normal high pressure oil area II, and establish within it spool, spool two ends effective pressure area equates, be provided with the bistable permanent magnetic valve at the valve body right-hand member, be provided with moving iron core in the bistable permanent magnetic valve, the left connecting rod on the moving iron core is connected with the spool right-hand member in the valve body, and valve body is provided with the working oil path interface B that is communicated with the working oil district, with the high-pressure oil passage interface C that the first normal high pressure oil area is communicated with, the low pressure oil circuit interface A that is communicated with normal low pressure oil district.Said bistable permanent magnetic valve is by yoke, closing coil, moving iron core, permanent-magnetic clamp, switching winding, wherein: have partition wall in the yoke body, the partition wall left side is provided with switching winding, the partition wall right side is provided with closing coil, studs with permanent magnet in the partition wall center hole, at closing coil, the center of permanent magnet and switching winding is provided with moving iron core, the moving left and right end of iron core is respectively equipped with left and right pull bar, and left lever links to each other with spool, and it is external that right pull bar passes yoke.
The utility model beneficial effect compared to existing technology is:
Need not hydraulic pilot valve (solenoid valve), acting characteristic and pressure independent, quick action, can prevent hydrovalve branch slowly and close slowly; The action of hydrovalve only needs a permanent magnetic valve, and permanent magnetic valve only need be imported monotony order to the left or to the right, has stopped two orders of mechanism in the past and has been strayed into tripping or the malfunction that causes simultaneously; The structure of existing hydrovalve obtains simplifying, and overall volume is little, and seal point is few, and the leakage proof oiliness can be reliable; Acting characteristic that permanent magnetic valve is constant and pressure independent; Non-maintaining, only need simple the inspection, the installation and maintenance debugging is convenient.
Description of drawings
Fig. 1 is primary cut-out bistable permanent magnetism hydraulic valve structural representation when being in the separating brake position
Fig. 2 is primary cut-out bistable permanent magnetism hydraulic valve structural representation when being in closing position
Among the figure, 1 normal high pressure oil area II, 2 normal low pressure oil districts, 3 working oil districts, 4 normal high pressure oil area I, 5 valve bodies, 6 spools, 7 oilholes, 8 bistable permanent magnetic valves, 9 yokes, 10 closing coils, 11 right connecting rods, 12 moving iron cores, 13 permanent-magnetic clamps, 14 switching windings, 15 left connecting rods, 16 partition walls, A low pressure oil circuit interface, B working oil path interface, C high-pressure oil passage interface.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further: the bistable permanent magnetism hydraulic valve that a kind of hydraulic pressure spring operating mechanism is used, comprise valve body 5, has normal low pressure oil district 2 in the valve body 5, working oil district 3, normal high pressure oil area I, normal high pressure oil area II, and be located at spool 6 in the valve body 5, it is characterized in that:, be provided with bistable permanent magnetic valve 8 on valve body 5 right sides, be provided with moving iron core 12 in the bistable permanent magnetic valve 8, the left connecting rod 15 on the moving iron core 12 links to each other with spool 6.Wherein, bistable permanent magnetic valve 8 comprises: yoke 9, closing coil 10, moving iron core 12, permanent-magnetic clamp 13, switching winding 14; Wherein: comprise partition wall 16 in the yoke 9, partition wall 16 left sides are provided with switching winding 14, partition wall 16 right sides are provided with closing coil 10, stud with permanent-magnetic clamp 13 in partition wall 16 center holes, at closing coil 10, be provided with moving iron core 12 in the central space of permanent-magnetic clamp 13 and switching winding 14, moving iron core 12 left sides, right-hand member is respectively equipped with a left side, right connecting rod, left side connecting rod 15 links to each other with spool 6, it is external that right connecting rod 11 passes yoke 9, when the utility model used on the primary cut-out hydraulic pressure spring operating mechanism, the working oil path interface B on the valve body linked to each other with the working oil path interface on the hydraulic actuating mechanism; High-pressure oil passage interface C links to each other with high-pressure oil passage interface on the hydraulic actuating mechanism; Low pressure oil circuit interface A links to each other with low pressure oil circuit interface on the hydraulic actuating mechanism.
The bistable permanent magnetism hydraulic valve working principle is, when bistable permanent magnetism hydraulic valve is in the separating brake position (as shown in Figure 1), spool 6 is in the separating brake position. and this moment is if give closing coil 14 energisings, magnetic field in the moving iron core 12 is formed by magnetic field and the permanent-magnetic clamp 13 generation magnetic field superposition that closing coil 14 produces, when closing coil 14 produces the static confining force that electromagnetic force left produces greater than permanent-magnetic clamp 13, moving iron core 12 is to left movement, drive spool 6 by driveshaft 15 and move to closing position left, closing coil 14 outages this moment, the confining force that produces by permanent magnet remains on closing position with spool 6.This moment, working oil district 3 was communicated with normal high pressure oil area I, and then the bottom oil pocket of hydraulic pressure spring operating mechanism is full of high pressure oil, and pushing drawing rod is finished closing operation, and contact of breaker remains on closing position.
When hydrovalve is in closing position shown in Figure 2, this moment is if give switching winding 10 energisings, switching winding 10 produces the static confining force that electromagnetic force to the right produces left greater than permanent-magnetic clamp 13, moving iron core 12 moves right, drive spool 6 by driveshaft 15 and move right separating brake shown in Figure 1 position, divide this moment brake cable 10 circle outages, bistable permanent magnetism hydraulic valve will remain on the separating brake position by the confining force of self.This moment, working oil district 3 was communicated with low pressure oil district 2, and the bottom oil pocket of hydraulic pressure spring operating mechanism is full of low pressure oil, and pushing drawing rod is finished sub-switching operation, and contact of breaker remains on the separating brake position.
Claims (2)
1, the bistable permanent magnetism hydraulic valve that a kind of hydraulic pressure spring operating mechanism is used, comprise valve body, divide in the valve body normal low pressure oil district is arranged, the working oil district, normal high pressure oil area I, normal high pressure oil area II, be provided with spool in the valve body, it is characterized in that spool two ends effective pressure area equates, be provided with the bistable permanent magnetic valve, be provided with moving iron core in the bistable permanent magnetic valve at the valve body right-hand member, left connecting rod on the moving iron core is connected with the spool right-hand member in the valve body, valve body is provided with the working oil path interface B that is communicated with the working oil district, with the high-pressure oil passage interface C that the first normal high pressure oil area is communicated with, and the low pressure oil circuit interface A that is communicated with normal low pressure oil district.
2, the bistable permanent magnetism hydraulic valve that a kind of hydraulic pressure spring operating mechanism according to claim 1 is used, it is characterized in that described bistable permanent magnetic valve comprises: yoke, closing coil, moving iron core, permanent-magnetic clamp, switching winding, wherein: have partition wall in the yoke body, the partition wall left side is provided with switching winding, and the partition wall right side is provided with closing coil, stud with permanent magnet in the partition wall center hole, at closing coil, the center of permanent magnet and switching winding is provided with moving iron core, a moving iron core left side, right-hand member is respectively equipped with a left side, right pull bar, left lever links to each other with spool, and it is external that right pull bar passes yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200117284U CN201187598Y (en) | 2008-03-25 | 2008-03-25 | Bistable permanent magnetism hydraulic valve for hydraulic spring operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200117284U CN201187598Y (en) | 2008-03-25 | 2008-03-25 | Bistable permanent magnetism hydraulic valve for hydraulic spring operating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187598Y true CN201187598Y (en) | 2009-01-28 |
Family
ID=40310620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200117284U Expired - Fee Related CN201187598Y (en) | 2008-03-25 | 2008-03-25 | Bistable permanent magnetism hydraulic valve for hydraulic spring operating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187598Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578668A (en) * | 2018-11-30 | 2019-04-05 | 西南交通大学 | A kind of electromagnetic drive mechanism for hydraulic valve |
| CN110292020A (en) * | 2019-07-22 | 2019-10-01 | 谢丽娜 | A kind of water injection rate sub-control adjustment equipment |
| CN112289599A (en) * | 2020-10-26 | 2021-01-29 | 国网上海市电力公司 | A control valve, hydraulic operating mechanism and circuit breaker |
-
2008
- 2008-03-25 CN CNU2008200117284U patent/CN201187598Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578668A (en) * | 2018-11-30 | 2019-04-05 | 西南交通大学 | A kind of electromagnetic drive mechanism for hydraulic valve |
| CN110292020A (en) * | 2019-07-22 | 2019-10-01 | 谢丽娜 | A kind of water injection rate sub-control adjustment equipment |
| CN112289599A (en) * | 2020-10-26 | 2021-01-29 | 国网上海市电力公司 | A control valve, hydraulic operating mechanism and circuit breaker |
| CN112289599B (en) * | 2020-10-26 | 2023-11-10 | 国网上海市电力公司 | A control valve, hydraulic operating mechanism and circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090128 Termination date: 20110325 |