CN201918307U - Buffering type immobilization insulating permanent magnet outdoor high-voltage vacuum circuit breaker - Google Patents
Buffering type immobilization insulating permanent magnet outdoor high-voltage vacuum circuit breaker Download PDFInfo
- Publication number
- CN201918307U CN201918307U CN201120030279XU CN201120030279U CN201918307U CN 201918307 U CN201918307 U CN 201918307U CN 201120030279X U CN201120030279X U CN 201120030279XU CN 201120030279 U CN201120030279 U CN 201120030279U CN 201918307 U CN201918307 U CN 201918307U
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- Prior art keywords
- buffer
- lower connecting
- main shaft
- outer tube
- outdoor high
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- Expired - Lifetime
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Abstract
The utility model relates to power distribution equipment in a power supply system, in particular to a buffering type immobilization insulating permanent magnet outdoor high-voltage vacuum circuit breaker, which is provided with a box. An operating mechanism is mounted in the box and comprises a permanent magnet operating mechanism and a transmission spindle, integrated immobilization posts of three phases A, B and C are mounted on the box, a movable contact lower connecting rod is connected to the lower side of the immobilization post of each phase, each movable contact lower connecting rod is sleeved with a spring and connected with the transmission spindle of the operating mechanism via a transmission crank arm, particularly, a crossbeam parallel to the transmission spindle is disposed in the box, three fixing racks which are aligned to the three movable contact lower connecting rods are mounted on the crossbeam, each fixing rack is provided with a buffer, and a spindle in each buffer is coaxial with the corresponding movable contact lower connecting rod. The buffering type immobilization insulating permanent magnet outdoor high-voltage vacuum circuit breaker thoroughly resolves problems that in an existing vacuum circuit breaker, a contact is burnt down, the service life of an arc extinguish chamber is shortened, even the arc extinguish chamber is burnt down, a capacitor is damaged and the like due to brake separating rebounding, and is widely applied to protecting and controlling transformer substations, industrial and mining enterprises and rural power grid distribution systems.
Description
The ㈠ technical field: the utility model relates to the controller switching equipment in the electric power system, and especially a kind of buffer-type seals insulation permanent magnetism outdoor high-voltage vacuum breaker admittedly.
The ㈡ background technology: promote the use of vacuum circuit-breaker from power department in 1992, only spent 18 years, China carries out the transition to vacuum circuit-breaker from oil-minimum breaker.Its primary structure includes casing, and operating mechanism is installed in the casing, and casing top is equipped with three integrated poles and three current transformers, and described each integrated pole bottom design has spindle carrier to stretch in the casing to be connected with the main shaft of operating mechanism.From present behaviour in service, one of subject matter performance that existing vacuum circuit-breaker exposes is exactly the defective of product mechanical property, exceeds the prescribed limit of product technology condition as measured values such as separating brake bounce-back, contact travel, average mark, closing speeds.The contact of vacuum circuit-breaker mostly is the dock structure, can produce rebound phenomena in various degree in minute closing operation.Facts have proved that bounce-back may cause: the ⑴ contact burning is serious, even melting welding.⑵ bellows stands forced vibration and may crack, and makes arc control device gas leakage, burns.⑶ the bigger generation bounce-back of impact velocity during separating brake and impulsive force may produce the distortion of contact and conducting rod, even cracks.⑷ suit the vacuum circuit-breaker of capacitor group as the damage that the separating brake spring also can cause capacitor takes place.Obviously, in order to improve the quality of product, reduce the bounce-back of product separating brake, the performance of improving product is necessary.
The ㈢ summary of the invention: the purpose of this utility model will solve existing vacuum circuit-breaker exactly and cause contact burning, arc extinguishing life-span to reduce because of the separating brake bounce-back even burn and problem such as capacitor damage, provides a kind of buffer-type to seal the insulation outdoor high-voltage vacuum breaker admittedly.
Concrete scheme of the present utility model is: improve at existing solid envelope insulation permanent magnetism outdoor high-voltage vacuum breaker, it has casing, operating mechanism is installed in the casing, this operating mechanism includes permanent-magnet manipulating mechanism and transmission main shaft, the casing top is equipped with A, B, the integrated pole of C three-phase, every phase pole below is connected with the moving contact lower connecting rod, be set with a spring on each moving contact lower connecting rod and pass through a transmission crank arm and be connected with the transmission main shaft of operating mechanism, it is characterized in that: in casing with the transmission main shaft crossbeam that has been arranged in parallel, on crossbeam, three fixed mounts are housed over against three moving contact lower connecting rods, a buffer is installed, main shaft in the buffer and moving contact lower connecting rod coaxial arrangement on each fixed mount.
Buffer unit described in the utility model includes buffer box and buffer, and this buffer has outer tube, and front and rear cover is equipped with at the outer tube two ends, wherein have oil filler point on the rear end cap, be furnished with plug cock, supporting seat is equipped with pipe in before and after adopting in the outer tube, and piston and spring are housed in the interior pipe; Interior pipe front end has spill port, and the middle part has outage, has three oil throughs on the supporting seat of described back, wherein a hole is communicated with the oil filler point of rear end, one hole is communicated with the cavity between the inner and outer pipes, also have a hole be communicated with in the pipe oil pocket, and with oilhole that interior pipe oil pocket is communicated with in non-return valve is housed; Described piston connects a main shaft, and supporting seat and front end housing stretched out before main shaft passed.
Open installing hole described in the utility model on the buffer box, the outer tube of described buffer is installed on the installing hole, and the outer tube outer wall is shaped on screw thread, and front and back adopt elastic washer and nut to be fixed.
For improving shock-absorbing capacity, further improve switch mechanical property bounce-back waveform, the utility model is equipped with the pressure accumulation sponges cover near preceding supporting seat in outer tube.
For improving reliability of the present utility model and useful life, the utility model is equipped with dirt-proof boot and oil sealing near front end housing in outer tube.
The utility model design is ingenious, and the production repacking is very convenient, and cost is low, increases buffer unit newly, can improve the mechanical property performance of switch greatly, thoroughly solves a series of problems that rebound and bring because of separating brake.
The ㈣ description of drawings:
Fig. 1 is a general structure front view of the present utility model;
Fig. 2 is that (gate-dividing state) view is amplified at the I place among Fig. 1;
Fig. 3 is that ("on" position) view is amplified at the I place among Fig. 1;
Fig. 4 is buffer master of the present utility model (a cuing open) view.
Among the figure: the integrated pole of 1-, 2-casing, 3-transmission main shaft, 4-transmission crank arm, the 5-permanent-magnet manipulating mechanism, 6-crossbeam, 7-buffer, 8-nut, the 9-elastic washer, 10-fixed mount, 11-spring, 12-moving contact lower connecting rod, 13-main shaft, 14-front end housing, the 15-dirt-proof boot, 16-oil sealing, 17-pressure accumulation sponges cover, supporting seat before the 18-, 19-spill port, 20-piston, the 21-spring, 22-outer tube, 23-outage, supporting seat behind the 24-, 25-non-return valve, 26-cavity, the 27-rear end cap, 28-plug cock, 29-oil filler point, 30-three oil throughs, 31-oil pocket, 32-current transformer.
The ㈤ embodiment:
Referring to Fig. 1, Fig. 2, Fig. 3, the utlity model has the basic structure of common solid envelope insulation permanent magnetism outdoor high-voltage vacuum breaker, it has casing 2, in the casing 2 operating mechanism is installed, this operating mechanism includes permanent-magnet manipulating mechanism 5 and transmission main shaft 3, casing 2 tops are equipped with A, B, the integrated pole 1 of C three-phase, every phase pole below is connected with moving contact lower connecting rod 12, be set with a spring 11 on each moving contact lower connecting rod 12 and pass through a transmission crank arm 4 and be connected with the transmission main shaft 3 of operating mechanism, particularly: in casing 2 with transmission main shaft 3 crossbeam 6 that has been arranged in parallel, on crossbeam 6, three fixed mounts 10 are housed over against three moving contact lower connecting rods 12, a buffer 7 is installed, main shaft 13 and moving contact lower connecting rod 12 coaxial arrangement in the buffer 7 on each fixed mount 10.
Described buffer 7 is referring to Fig. 4, and it has outer tube 22, and front and rear cover 14,27 is equipped with at outer tube 22 two ends, wherein have oil filler point 29 on the rear end cap 27, be furnished with plug cock 28, supporting seat 18,24 is equipped with pipe in before and after adopting in the outer tube 22, and piston 20 and spring 21 are housed in the interior pipe; Interior pipe front end has spill port 19, the middle part has outage 23, have three oil throughs 30 on the supporting seat 24 of described back, wherein a hole is communicated with the oil filler point 29 of rear end, one hole is communicated with the cavity 26 between the inner and outer pipes, also have a hole be communicated with in pipe oil pocket 31, and with oilhole that interior pipe oil pocket 31 is communicated with in non-return valve 25 is housed; Described piston 20 connects a main shaft 13, and supporting seat 18 and front end housing 14 stretched out before main shaft 13 passed.The head of described main shaft 13 is equipped with impact head 12, and impact head 12 outsides are with vibration damping leather sheath 11.
Open installing hole on the fixed mount described in the utility model 10, the outer tube 22 of described buffer 7 is installed on the installing hole, and outer tube 22 outer walls are shaped on screw thread, and front and back adopt elastic washer 9 and nut 8 to be fixed.
The preferred scheme of the utility model is: near preceding supporting seat 18 pressure accumulation sponges cover 17 is housed in outer tube 22.And in outer tube 22, dirt-proof boot 15 and oil sealing 16 are housed near front end housing 14.
Cushioning principle of the present utility model is: during separating brake work, referring to Fig. 2, the transmission main shaft 3 of permanent-magnet manipulating mechanism drives transmission crank arm 4, and transmission crank arm 4 drives moving contact lower connecting rod 12 and draws close buffer 7, and the main shaft 13 of buffer 7 withstands moving contact lower connecting rod 12.Main shaft 13, piston 20 retreat compression spring 21, obtain buffering under the hydraulic oil double action in spring 21 and oil pocket 31, simultaneously, main shaft 13 drives 17 distortion of oil sealing 16 compressing pressure accumulation sponges covers, main shaft 13 setbacks are increased damping, thereby further improve shock-absorbing capacity, the final bounce-back waveform that improves improves switch machinery characteristic performance of the present utility model.During combined floodgate work, referring to Fig. 3, the transmission main shaft 3 of permanent-magnet manipulating mechanism drives transmission crank arm 4 promotion moving contact lower connecting rods 12 and leaves buffer.
Claims (5)
1. buffer-type seals insulation permanent magnetism outdoor high-voltage vacuum breaker admittedly, has casing, operating mechanism is installed in the casing, this operating mechanism includes permanent-magnet manipulating mechanism and transmission main shaft, the casing top is equipped with A, B, the integrated pole of C three-phase, every phase pole below is connected with the moving contact lower connecting rod, be set with a spring on each moving contact lower connecting rod and pass through a transmission crank arm and be connected with the transmission main shaft of operating mechanism, it is characterized in that: in casing with the transmission main shaft crossbeam that has been arranged in parallel, on crossbeam, three fixed mounts are housed over against three moving contact lower connecting rods, a buffer is installed, main shaft in the buffer and moving contact lower connecting rod coaxial arrangement on each fixed mount.
2. buffer-type according to claim 1 seals insulation permanent magnetism outdoor high-voltage vacuum breaker admittedly, it is characterized in that: described buffer has outer tube, front and rear cover is equipped with at the outer tube two ends, wherein have oil filler point on the rear end cap, is furnished with plug cock, supporting seat is equipped with pipe in before and after adopting in the outer tube, and piston and spring are housed in the interior pipe; Interior pipe front end has spill port, and the middle part has outage, has three oil throughs on the supporting seat of described back, wherein a hole is communicated with the oil filler point of rear end, one hole is communicated with the cavity between the inner and outer pipes, also have a hole be communicated with in the pipe oil pocket, and with oilhole that interior pipe oil pocket is communicated with in non-return valve is housed; Described piston connects a main shaft, and supporting seat and front end housing stretched out before main shaft passed.
3. buffer-type according to claim 1 seals insulation permanent magnetism outdoor high-voltage vacuum breaker admittedly, it is characterized in that: have installing hole on the fixed mount on the described crossbeam, the outer tube of described buffer is installed on the installing hole, the outer tube outer wall is shaped on screw thread, and front and back adopt elastic washer and nut to be fixed.
4. buffer-type according to claim 2 seals insulation permanent magnetism outdoor high-voltage vacuum breaker admittedly, it is characterized in that: near preceding supporting seat the pressure accumulation sponges cover is housed in outer tube.
5. buffer-type according to claim 2 seals insulation permanent magnetism outdoor high-voltage vacuum breaker admittedly, it is characterized in that: near front end housing dirt-proof boot and oil sealing are housed in outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120030279XU CN201918307U (en) | 2011-01-28 | 2011-01-28 | Buffering type immobilization insulating permanent magnet outdoor high-voltage vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120030279XU CN201918307U (en) | 2011-01-28 | 2011-01-28 | Buffering type immobilization insulating permanent magnet outdoor high-voltage vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918307U true CN201918307U (en) | 2011-08-03 |
Family
ID=44418099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120030279XU Expired - Lifetime CN201918307U (en) | 2011-01-28 | 2011-01-28 | Buffering type immobilization insulating permanent magnet outdoor high-voltage vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201918307U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842457A (en) * | 2012-09-17 | 2012-12-26 | 常熟市通用电器厂有限公司 | Composite buffer |
| CN102903564A (en) * | 2012-09-14 | 2013-01-30 | 西安真空开关厂 | Outdoor high-voltage vacuum circuit breaker |
| CN103280375A (en) * | 2013-05-24 | 2013-09-04 | 沈阳华德海泰电器有限公司 | Oil damper for vacuum breaker operating mechanism |
| CN105097320A (en) * | 2015-08-04 | 2015-11-25 | 爱启（厦门）电气技术有限公司 | Intermediate-voltage solid insulation switch and purpose and drive device thereof |
| CN106252149A (en) * | 2016-08-31 | 2016-12-21 | 合保电气（芜湖）有限公司 | Outdoor vacuum circuit breaker |
-
2011
- 2011-01-28 CN CN201120030279XU patent/CN201918307U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903564A (en) * | 2012-09-14 | 2013-01-30 | 西安真空开关厂 | Outdoor high-voltage vacuum circuit breaker |
| CN102842457A (en) * | 2012-09-17 | 2012-12-26 | 常熟市通用电器厂有限公司 | Composite buffer |
| CN103280375A (en) * | 2013-05-24 | 2013-09-04 | 沈阳华德海泰电器有限公司 | Oil damper for vacuum breaker operating mechanism |
| CN103280375B (en) * | 2013-05-24 | 2015-07-01 | 沈阳华德海泰电器有限公司 | Oil damper for vacuum breaker operating mechanism |
| CN105097320A (en) * | 2015-08-04 | 2015-11-25 | 爱启（厦门）电气技术有限公司 | Intermediate-voltage solid insulation switch and purpose and drive device thereof |
| CN106252149A (en) * | 2016-08-31 | 2016-12-21 | 合保电气（芜湖）有限公司 | Outdoor vacuum circuit breaker |
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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: 20110803 |
|
| CX01 | Expiry of patent term |