CN202564156U - Slow separation preventing device for hydraulic operating mechanism of high-voltage circuit breaker - Google Patents
Slow separation preventing device for hydraulic operating mechanism of high-voltage circuit breaker Download PDFInfo
- Publication number
- CN202564156U CN202564156U CN2012201723057U CN201220172305U CN202564156U CN 202564156 U CN202564156 U CN 202564156U CN 2012201723057 U CN2012201723057 U CN 2012201723057U CN 201220172305 U CN201220172305 U CN 201220172305U CN 202564156 U CN202564156 U CN 202564156U
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- China
- Prior art keywords
- oil cylinder
- spring
- operating mechanism
- circuit breaker
- piston rod
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Abstract
The utility model provides a slow separation preventing device for a hydraulic operating mechanism of a high-voltage circuit breaker, and aims to solve a problem that a current hydraulic operating mechanism has a hidden trouble of slow separation which is very dangerous. The slow separation preventing device has such main points that an oil inlet of a spring cylinder is connected on an oil channel between an upper oil cavity of a main cylinder and an energy storage device; a piston rod or a connecting rod of the main cylinder is provided with a concave in which a piston rod of the spring cylinder can be inserted; and when the piston rod of the main cylinder stays at a closing position, the piston rod of the spring cylinder faces to the concave, and the distance between the spring cylinder and the concave is within a stroke range of the spring cylinder. The slow separation preventing device has the beneficial effects that a slow separation phenomenon of the hydraulic operating mechanism under a closing state of the circuit breaker is effectively prevented, and the operation reliability of the equipment is improved greatly.
Description
Technical field
The utility model relates to hydraulic operating mechanism of high voltage circuit breaker, particularly the anti-device that divides slowly in the hydraulic operating mechanism of high voltage circuit breaker.
Background technology
Primary cut-out is the important control equipment that is widely used on the high voltage power transmission and transforming circuit.In recent years; Along with the development of China's electric power system to high voltage, big capacity, long distance; Particularly 550kv and the more appearance and the development of high-tension transmission circuit obtained extensive use and develop rapidly with SF6 gas as the SF6 puffer circuit breaker of dielectric and arc-extinguishing medium.With the supporting operating mechanism of air pressing type SF6 circuit breaker; Must be in extremely short opening time with the SF6 gas compression to satisfying the gases at high pressure that blow-out requires; Must guarantee also that simultaneously the contact opening velocity meets the requirements of speed; Must dispose powerful stored energy mechanism, general operating mechanism comprises large power spring operation mechanism and hydraulic operating mechanism for this reason.Because the spring manufacture difficulty of using in the large power spring operation mechanism is big, cost is high, quality is restive, is difficult to satisfy the requirement of primary cut-out.Hydraulic actuating mechanism comprises oil cylinder, main control valve (solenoid directional control valve), hydraulic accumulator etc., and it is that it is up, descending to promote piston rod through the pressure reduction of two oil pockets of control oil cylinder, and then drives the separating brake and the combined floodgate of high-voltage switch gear.Obviously there is not the intrinsic defective of large power spring operation mechanism pressure in hydraulic actuating mechanism, is used widely.But there is the hidden danger of dividing slowly in present hydraulic actuating mechanism; Specifically be when circuit breaker is in "on" position; If hydraulic accumulator loses pressure because of certain reason, under the SF6 gas pressure effect of 0.6MPa, arc control device can move to the separating brake direction slowly in the circuit breaker tank body; This phenomenon is called slowly and divides, and divides abnormally dangerous slowly.
Summary of the invention
For preventing that dividing slowly from appearring in hydraulic mechanism, the utility model provides a kind of anti-device that divides slowly of hydraulic operating mechanism of high voltage circuit breaker.
The purpose of the utility model is achieved in that it comprises master cylinder and accumulator, is characterized in that: it also has the spring oil cylinder, and said spring oil cylinder is meant in the rodless cavity of oil cylinder spring is set, logical oil in the rod chamber of oil cylinder; The hydraulic fluid port of spring oil cylinder is connected on the oil circuit between master cylinder upper oil cavitie and the accumulator; The main oil cylinder piston bar or with the rigidly connected connecting rod of main oil cylinder piston bar (to call connecting rod in the following text) on be provided with the spill that a piston rod that can let the spring oil cylinder inserts; The position of spring oil cylinder setting is; When the piston rod of master cylinder is in closing position; The piston rod of spring oil cylinder is facing to above-mentioned spill, and the distance of spring oil cylinder and above-mentioned spill is in spring oil cylinder piston throw of lever scope.
When energy storage pressure just often, under the effect of this oil pressure,, drive the piston rod withdrawal of spring oil cylinder with the length of spring compressed of spring oil cylinder, hydraulic actuating mechanism is divide-shut brake normally.In case and the pressure in the accumulator loses for a certain reason; Then the piston rod of spring oil cylinder stretches out under the effect of spring; Stretch in the spill on main oil cylinder piston bar or the connecting rod; Block main oil cylinder piston bar or connecting rod, stop the main oil cylinder piston bar descending, the phenomenon of branch slowly that so just can avoid circuit breaker under "on" position, to occur.
Compared with prior art, the good effect of the utility model is: prevent that effectively hydraulic actuating mechanism from the phenomenon of branch slowly that circuit breaker possibly occur, improving the reliability of equipment operation greatly under "on" position.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
It comprises master cylinder 1 and accumulator 6, and it also has spring oil cylinder 5; Oil circuit between master cylinder upper oil cavitie and accumulator is provided with threeway, and the bypass of threeway connects the hydraulic fluid port of spring oil cylinder; On connecting rod 4, be provided with a cannelure 41 that can let spring oil cylinder piston bar 51 insert; The position of spring oil cylinder setting is; When main oil cylinder piston bar 11 is in closing position; Spring oil cylinder piston pole pair cannelure, and the distance of spring oil cylinder and cannelure is in spring oil cylinder piston throw of lever scope.
When energy storage pressure just often, under the effect of this oil pressure,, drive the withdrawal of spring oil cylinder piston bar with 52 compressions of the spring of spring oil cylinder, hydraulic actuating mechanism can driven high-voltage switch gear 3 divide-shut brakes.In case and the pressure in the accumulator loses for a certain reason; Then the piston rod of spring oil cylinder stretches out under the effect of spring; Stretch in the cannelure on main oil cylinder piston bar or the connecting rod; Block connecting rod, stop the main oil cylinder piston bar descending, the phenomenon of branch slowly that so just can avoid circuit breaker under "on" position, to occur.
The 2nd, solenoid directional control valve, the 7th, fuel tank.
Claims (2)
1. the anti-of a hydraulic operating mechanism of high voltage circuit breaker divided device slowly, and it comprises master cylinder and accumulator, it is characterized in that: it also has the spring oil cylinder, and said spring oil cylinder is meant in the rodless cavity of oil cylinder and spring is set, logical oil in the rod chamber of oil cylinder; The hydraulic fluid port of spring oil cylinder is connected on the oil circuit between master cylinder upper oil cavitie and the accumulator; The main oil cylinder piston bar or with the rigidly connected connecting rod of main oil cylinder piston bar on be provided with the spill that a piston rod that can let the spring oil cylinder inserts; The position of spring oil cylinder setting is; When the piston rod of master cylinder is in closing position; The piston rod of spring oil cylinder is facing to above-mentioned spill, and the distance of spring oil cylinder and above-mentioned spill is in spring oil cylinder piston throw of lever scope.
2. divide device slowly according to the anti-of the described hydraulic operating mechanism of high voltage circuit breaker of claim 1, it is characterized in that: said spill is meant cannelure is set on connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201723057U CN202564156U (en) | 2012-04-23 | 2012-04-23 | Slow separation preventing device for hydraulic operating mechanism of high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201723057U CN202564156U (en) | 2012-04-23 | 2012-04-23 | Slow separation preventing device for hydraulic operating mechanism of high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202564156U true CN202564156U (en) | 2012-11-28 |
Family
ID=47213784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201723057U Expired - Lifetime CN202564156U (en) | 2012-04-23 | 2012-04-23 | Slow separation preventing device for hydraulic operating mechanism of high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202564156U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623264A (en) * | 2012-04-23 | 2012-08-01 | 沈阳东北电力调节技术有限公司 | Slow opening-proof device for hydraulic control mechanism of high voltage circuit breaker |
| CN107293422A (en) * | 2017-06-05 | 2017-10-24 | 河南平高电气股份有限公司 | A kind of breaker and its anti-slow separating device |
-
2012
- 2012-04-23 CN CN2012201723057U patent/CN202564156U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623264A (en) * | 2012-04-23 | 2012-08-01 | 沈阳东北电力调节技术有限公司 | Slow opening-proof device for hydraulic control mechanism of high voltage circuit breaker |
| CN107293422A (en) * | 2017-06-05 | 2017-10-24 | 河南平高电气股份有限公司 | A kind of breaker and its anti-slow separating device |
| CN107293422B (en) * | 2017-06-05 | 2019-01-22 | 河南平高电气股份有限公司 | A kind of breaker and its prevent slow separating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |
|
| CX01 | Expiry of patent term |