CN102623264A - Slow opening-proof device for hydraulic control mechanism of high voltage circuit breaker - Google Patents
Slow opening-proof device for hydraulic control mechanism of high voltage circuit breaker Download PDFInfo
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- CN102623264A CN102623264A CN2012101190004A CN201210119000A CN102623264A CN 102623264 A CN102623264 A CN 102623264A CN 2012101190004 A CN2012101190004 A CN 2012101190004A CN 201210119000 A CN201210119000 A CN 201210119000A CN 102623264 A CN102623264 A CN 102623264A
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- oil cylinder
- spring
- circuit breaker
- piston rod
- slow opening
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a slow opening-proof device for a hydraulic control mechanism for a high voltage circuit breaker to solve the problems that the conventional hydraulic control mechanism has a slow opening hidden trouble and slow opening is dangerous. The slow opening-proof device is characterized in that: an oil port of a spring cylinder is connected to an oil line between and upper oil cavity of a main cylinder and an energy accumulator; a piston rod or a connecting rod of the main cylinder is provided with a concave part into which the piston rod of the spring cylinder is inserted; and when the piston rod of the main cylinder is at a switch-on position, the piston rod of the spring cylinder is opposite to the concave part and a distance between the spring cylinder and the concave part is in a travel range of the piston rod of the spring cylinder. The slow opening-proof device has the advantages that: a possible slow opening phenomenon of the hydraulic control mechanism is effectively prevented under the switch-on state of the circuit breaker, and the equipment running reliability is improved greatly.
Description
Technical field
The present invention 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 present invention provides a kind of anti-device that divides slowly of hydraulic operating mechanism of high voltage circuit breaker.
The objective of the invention is to realize like this: 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 (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, good effect of the present invention 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 a structural representation of the present invention.
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 |
|---|---|---|---|
| CN2012101190004A CN102623264A (en) | 2012-04-23 | 2012-04-23 | Slow opening-proof device for hydraulic control mechanism of high voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101190004A CN102623264A (en) | 2012-04-23 | 2012-04-23 | Slow opening-proof device for hydraulic control mechanism of high voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102623264A true CN102623264A (en) | 2012-08-01 |
Family
ID=46563114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101190004A Pending CN102623264A (en) | 2012-04-23 | 2012-04-23 | Slow opening-proof device for hydraulic control mechanism of high voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102623264A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494063A (en) * | 2018-03-09 | 2019-03-19 | 国网浙江省电力公司金华供电公司 | The control device and control method of on-load tap changers of transformers |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4118613A (en) * | 1977-06-27 | 1978-10-03 | General Electric Company | Hydraulically-actuated operating system for an electric circuit breaker |
| DE3611501A1 (en) * | 1986-04-05 | 1987-10-08 | Bbc Brown Boveri & Cie | DRIVE FOR GENERATING A LINEAR MOVEMENT FOR A CONSUMER |
| CN88102464A (en) * | 1987-04-29 | 1988-11-30 | 克劳德·阿兰·格拉茨马勒 | Hydraulic three-way valve |
| CN201294164Y (en) * | 2008-11-14 | 2009-08-19 | 河南平高电气股份有限公司 | Working cylinder for preventing high-voltage circuit breaker from being divided slowly |
| CN202564156U (en) * | 2012-04-23 | 2012-11-28 | 沈阳东北电力调节技术有限公司 | Slow separation preventing device for hydraulic operating mechanism of high-voltage circuit breaker |
-
2012
- 2012-04-23 CN CN2012101190004A patent/CN102623264A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4118613A (en) * | 1977-06-27 | 1978-10-03 | General Electric Company | Hydraulically-actuated operating system for an electric circuit breaker |
| DE3611501A1 (en) * | 1986-04-05 | 1987-10-08 | Bbc Brown Boveri & Cie | DRIVE FOR GENERATING A LINEAR MOVEMENT FOR A CONSUMER |
| CN88102464A (en) * | 1987-04-29 | 1988-11-30 | 克劳德·阿兰·格拉茨马勒 | Hydraulic three-way valve |
| CN201294164Y (en) * | 2008-11-14 | 2009-08-19 | 河南平高电气股份有限公司 | Working cylinder for preventing high-voltage circuit breaker from being divided slowly |
| CN202564156U (en) * | 2012-04-23 | 2012-11-28 | 沈阳东北电力调节技术有限公司 | Slow separation preventing device for hydraulic operating mechanism of high-voltage circuit breaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494063A (en) * | 2018-03-09 | 2019-03-19 | 国网浙江省电力公司金华供电公司 | The control device and control method of on-load tap changers of transformers |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120801 |