CN201655571U - Hydraulic spring control mechanism of high-voltage circuit breaker - Google Patents
Hydraulic spring control mechanism of high-voltage circuit breaker Download PDFInfo
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- CN201655571U CN201655571U CN2009202400484U CN200920240048U CN201655571U CN 201655571 U CN201655571 U CN 201655571U CN 2009202400484 U CN2009202400484 U CN 2009202400484U CN 200920240048 U CN200920240048 U CN 200920240048U CN 201655571 U CN201655571 U CN 201655571U
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Abstract
The utility model relates to the technical field of power transmission and transformation equipment, in particular to a hydraulic spring control mechanism assorted with a high-voltage circuit breaker. The hydraulic spring control mechanism comprises an operating cylinder module, an energy storage cylinder module (22), a control module, a monitoring module (23), a charging pump module (21), an auxiliary switch (25) and the like, the upper portion of the operating cylinder module is provided with an oil tank (2) while the lower portion thereof is connected with a disc spring group (8), a protective cavity (4) is disposed outside sealing surfaces of the operating cylinder module and the energy storage cylinder module (22), and a dustproof ring is arranged outside the protective cavity (4). A buffering plunger is in a step truncated cone surface and a conical surface composite structure. The protective cavity (4) is arranged on the external sealing surfaces so that the external sealing surfaces can be protected better, thereby increasing external sealing reliability, improving hydraulic working environments, prolonging service life, increasing integral property of the mechanism. In addition, the hydraulic spring control mechanism has the advantages of high transmission efficiency, fine buffering effect, convenient repair, simple mechanical transmission, low seepage and leakage possibility, no operation maintenance and the like.
Description
Technical field
The utility model relates to a kind of power transmission and transforming equipment technical field, specifically a kind of hydraulic pressure spring operating mechanism of and primary cut-out adapted.
Background technology
Along with the development of electric utility, the power transmission and transforming equipment consumption grows with each passing day in the urban and rural power grids, and the fail safe of its operation is also important further.Primary cut-out is the key equipment that electric power is carried, and its operating mechanism is the critical component of primary cut-out, and the effect of operating mechanism is to be used for making breaker closing, and makes it maintain "on" position and gate-dividing state.The operating mechanism of circuit breaker mainly divides hydraulic spring grease cup formula operating mechanism, electromagnetic type operating mechanism, spring operating mechanism, pneumatic type operating mechanism etc.Hydraulic spring grease cup formula operating mechanism is big with its power output, reaction is fast, characteristics such as reliability height are generally adopted, at present, primary cut-out all develops towards the modularization direction with hydraulic pressure spring operating mechanism, but external movable sealing place of existing hydraulic pressure spring operating mechanism is unshielded substantially, and sealing surface directly contacts with external environment, makes hydraulic mechanism bigger to the degree of dependence of environment, in case fall to going up sand and dust etc. on the piston rod, when mechanism action, will scratch sealing surface and cause oil accident.Existing in addition hydraulic mechanism also exists buffering oil pressure peak value height, the local loss of oil circuit big, has reduced useful life, influences shortcomings such as mechanism's overall performance.
Summary of the invention
In order to overcome above-mentioned defective, the utility model provides a kind of good seal performance, improves the hydraulic environment, increases the service life, and improves the hydraulic pressure spring operating mechanism of the primary cut-out of mechanism's overall performance.
The technical solution adopted in the utility model is: a kind of hydraulic pressure spring operating mechanism of primary cut-out, comprise operation cylinder module, loaded cylinder module, control module, monitoring modular, pressurising pump module, auxiliary switch, fuel tank and dish spring group, operation cylinder module top is provided with fuel tank, the fuel tank bottom is connected with dish spring group, the sealing shroud of described operation cylinder module is provided with the protection chamber, on the end cover of loaded cylinder module, also be provided with the protection chamber, be provided with dust ring in the outside, protection chamber of operation cylinder module and loaded cylinder module.
The buffer plunger of the main operation piston rod in the operation cylinder module is ladder round table surface and taper seat composite structure, connects by the transition of circular cone cylinder between two promptly adjacent buffering cylinder tables.
The piston seal face of the main operation piston rod in described operation cylinder module sealing surface top outer and lower sleeve gasket is provided with two or three buffering grooves.
The big valve core of main valve plug and small valve core assembling back is fixed into one by collar in the described control module.
The beneficial effects of the utility model are: 1, because the utility model has protection chamber and dust ring in the external sealing surface arranged outside of operation cylinder module and energy-storage module, the fail safe of the external movable sealing of mechanism, reliability are improved greatly; 2, the buffer plunger of main operation piston rod is set to the complex method of ladder round table surface and taper seat, has optimized the buffer plunger structure, makes the compensator or trimmer pressure curve mild, and the compensator or trimmer pressure peak value reduces; 3, outside the piston seal face of main operation piston rod and sealing shroud sealing surface top designed two or three buffering grooves respectively, compensator or trimmer pressure peak value shock wave is weakened step by step, thereby the protection seal is avoided the infringement of compensator or trimmer pressure peak value.Prolong the useful life of mechanism; 4, adopt collar to be fixed into one main control core valve two joint assembling backs, increase the logical oily cross section between spool and valve core case, improved the oil circuit bottleneck structure of main control valve in the oil circuit, reduced the pressure loss at this place, the local loss of oil circuit is reduced, and transmission efficiency improves.The utlity model has better practicability and reliability, thus can better guarantee power grid security reliability service.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the vertical view of Fig. 1
Embodiment
Now in conjunction with the accompanying drawings the utility model is further described, the technical scheme that this practicality is adopted is: a kind of hydraulic pressure spring operating mechanism of primary cut-out comprises operation cylinder module, loaded cylinder module 22, control module 24, monitoring modular 23, pressurising pump module 21, auxiliary switch 25, fuel tank 2 and dish spring group 8 etc.The utility model is a main truss with the main operation cylinder body 3 of operation cylinder module, the integrated design of modularization round 3 assemblings of main operation cylinder body that other module and parts are all compact.Main operation cylinder body 3 generally is swaged into the step bar with wrought aluminium or special-purpose duralumin rod customized processes, two ends are cylindrical, the middle and upper part is a hexagon, the centre is a master piston bore, and hexagonal six faces are six that each module is installed, and the interface channel that communicates with master piston bore is arranged on six respectively, three loaded cylinder module 22 equiblibrium mass distributions wherein, occupy three, pressurising pump module 21, monitoring modular 23 and control module 24 respectively three loaded cylinder modules 22 respectively account between any two the one side, see Fig. 2.Each intermodule does not have any conduit under fluid pressure, and all modules all connect by seal nipple.Operation cylinder module top is provided with fuel tank 2, and fuel tank 2 bottoms are connected with dish spring group 8.Mounting bracket 1 is housed on fuel tank 2, does the usefulness of mechanism's mount, see Fig. 1.
The sealing shroud 19 of described operation cylinder module is provided with protection chamber 4, also is provided with protection chamber 4 on the end cover 6 of loaded cylinder module 22, is provided with dust ring in 4 outsides, protection chamber of operation cylinder module and loaded cylinder module 22.Protection of the present utility model chamber 4 width can be 2mm～30mm, can be 1mm～5mm deeply.Protection chamber 4 is arranged on the outside of the seal groove on sealing shroud 19 and the end cover 6 in the present embodiment.
The buffer plunger of the main operation piston rod 12 in the operation cylinder module is ladder round table surface and taper seat composite structure, connects by the transition of circular cone cylinder between two promptly adjacent buffering cylinder tables.Each buffering step has the face of cylinder of one section 2～3mm in the present embodiment, and cylinder table is that a circular cone post connects between next buffering cylinder step.The total length of the length of each section of the utility model buffering step and buffering plunger is according to different behaviour in service designing and calculating, and by determining behind the verification experimental verification.
The piston seal face of the main operation piston rod 12 in described operation cylinder module sealing surface top outer and lower sleeve gasket 10 is provided with two or three buffering grooves, groove width of the present utility model can be 1mm～5mm, degree of depth 1mm～5mm, its cross sectional shape can be triangle, rectangle or trapezoidal etc.
Main valve plug in the described control module 24 is big valve core and small valve core assembling back by the fixing all-in-one-piece structure of collar.Big valve core connects in the endoporus in the present embodiment the collar groove.Seal with seal during the two joint assemblings of large and small spool, and collar is pushed the collar groove fix.
Operation principle of the present utility model is the same with the hydraulic pressure spring operating mechanism operation principle of prior art: when pressurising pump module 21 startups of mechanism are suppressed after loaded cylinder module 22 is given 8 energy storage of dish spring group, high-voltage oil cavity has had hydraulic oil, E chamber above the piston of main operation this moment piston rod 12 is a hydraulic oil, following F chamber is a low pressure oil, and mechanism is in gate-dividing state.By control module 24 control combined floodgate one-level valve events, the commutation of secondary main control valve, make P mouth and the conducting of Z mouth, E chamber above the main piston and following F chamber all are hydraulic oil like this.Because of following oil pressure area is more top big,,, realize closing a floodgate so main operation piston rod 12 moves upward so following power is big.
Behind the combined floodgate, the secondary circuit of the step valve that closes a floodgate is cut off in auxiliary switch 25 conversions, and the motor 26 of monitoring modular 23 startup pressurising pump modules 21 replenishes oil pressure simultaneously, and the full back of energy storage monitoring modular 23 cuts off the power supply of motor 26.Mechanism remains on "on" position.
When mechanism carries out separating brake in "on" position, by control module 24 control separating brake one-level valve events, the commutation of secondary main control valve, make Z mouth and the conducting of T mouth, the E chamber above the main piston still is a hydraulic oil like this, and following F chamber becomes low pressure oil.So main operation piston rod 12 moves downward, realize separating brake.
Behind the separating brake, the secondary circuit by separating brake one step valve of control module 24 controls, monitoring modular 23 starter motors 26 pressurisings are simultaneously cut off in auxiliary switch 25 conversions.The full back of energy storage monitoring modular 23 cuts off the power supply of motor 26.Mechanism remains on gate-dividing state.
The utility model owing in the external sealing surface arranged outside of operation cylinder module and loaded cylinder module 22 protection chamber 4 and dust ring are arranged, improves the fail safe of the external movable sealing of mechanism, reliability in the course of the work greatly; The buffer plunger of main operation piston rod 12 is set to ladder round table surface and taper seat complex method, has optimized the buffer plunger structure, makes the compensator or trimmer pressure curve mild, and the compensator or trimmer pressure peak value reduces; Outside the piston seal face of main operation piston rod 12, two or three buffering grooves are set respectively, compensator or trimmer pressure peak value shock wave is weakened step by step, thereby the protection seal are avoided the infringement of compensator or trimmer pressure peak value with sealing shroud 19 sealing surface tops.Prolong the useful life of mechanism; Adopt collar to be fixed into one main control core valve two joint assembling backs, increased the logical oily cross section between spool and valve core case, improved the oil circuit bottleneck structure of main control valve in the oil circuit, reduced the pressure loss at this place, the local loss of oil circuit is reduced, and transmission efficiency improves, and reliability is higher.
This shows that the utility model has improved the hydraulic environment, has prolonged service life, improved mechanism's overall performance, had good seal performance, transmission efficiency height, good buffer effect, maintenance is convenient, machine driving is simple, and seepage and leakage are low, exempt from the advantages such as operation maintenance.
Claims (4)
1. the hydraulic pressure spring operating mechanism of a primary cut-out, comprise operation cylinder module, loaded cylinder module (22), control module (24), monitoring modular (23), pressurising pump module (21), auxiliary switch (25), fuel tank (2) and dish spring group (8), operation cylinder module top is provided with fuel tank (2), fuel tank (2) bottom is connected with dish spring group (8), it is characterized in that: the sealing shroud (19) of described operation cylinder module is provided with protection chamber (4), on the end cover of loaded cylinder module (22), also be provided with protection chamber (4), be provided with dust ring in the outside, protection chamber (4) of operation cylinder module and loaded cylinder module (22).
2. the hydraulic pressure spring operating mechanism of primary cut-out according to claim 1, it is characterized in that: the buffer plunger of the main operation piston rod (12) in the operation cylinder module is ladder round table surface and taper seat composite structure, connects by the transition of circular cone cylinder between two promptly adjacent buffering cylinder tables.
3. the hydraulic pressure spring operating mechanism of primary cut-out according to claim 1 is characterized in that: the piston seal face of the main operation piston rod (12) in described operation cylinder module sealing surface top outer and lower sleeve gasket (10) is provided with two or three and cushions grooves.
4. the hydraulic pressure spring operating mechanism of primary cut-out according to claim 1 is characterized in that: main valve plug is that big valve core then is fixed into one by collar with the small valve core assembling in the described control module (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202400484U CN201655571U (en) | 2009-10-22 | 2009-10-22 | Hydraulic spring control mechanism of high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202400484U CN201655571U (en) | 2009-10-22 | 2009-10-22 | Hydraulic spring control mechanism of high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201655571U true CN201655571U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202400484U Expired - Fee Related CN201655571U (en) | 2009-10-22 | 2009-10-22 | Hydraulic spring control mechanism of high-voltage circuit breaker |
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| CN (1) | CN201655571U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106024442A (en) * | 2016-06-20 | 2016-10-12 | 山东泰开高压开关有限公司 | Ultra-high operation work hydraulic spring operation mechanism for extra-high voltage circuit breaker |
| CN110552935A (en) * | 2018-06-04 | 2019-12-10 | 平高集团有限公司 | Hydraulic operating mechanism |
| CN110880808A (en) * | 2019-12-06 | 2020-03-13 | 汪祖民 | Intelligent power grid dual-power automatic switching device |
-
2009
- 2009-10-22 CN CN2009202400484U patent/CN201655571U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106024442A (en) * | 2016-06-20 | 2016-10-12 | 山东泰开高压开关有限公司 | Ultra-high operation work hydraulic spring operation mechanism for extra-high voltage circuit breaker |
| CN110552935A (en) * | 2018-06-04 | 2019-12-10 | 平高集团有限公司 | Hydraulic operating mechanism |
| CN110552935B (en) * | 2018-06-04 | 2021-04-30 | 平高集团有限公司 | Hydraulic operating mechanism |
| CN110880808A (en) * | 2019-12-06 | 2020-03-13 | 汪祖民 | Intelligent power grid dual-power automatic switching device |
| CN110880808B (en) * | 2019-12-06 | 2021-02-26 | 株洲市众普森技术有限公司 | Intelligent power grid dual-power automatic switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20141022 |
|
| EXPY | Termination of patent right or utility model |