CN203521286U - Central-positioned indoor high-voltage vacuum circuit breaker - Google Patents
Central-positioned indoor high-voltage vacuum circuit breaker Download PDFInfo
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- CN203521286U CN203521286U CN201320713660.5U CN201320713660U CN203521286U CN 203521286 U CN203521286 U CN 203521286U CN 201320713660 U CN201320713660 U CN 201320713660U CN 203521286 U CN203521286 U CN 203521286U
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- circuit breaker
- dividing plate
- vacuum circuit
- voltage vacuum
- indoor high
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Abstract
The utility model provides a central-positioned indoor high-voltage vacuum circuit breaker. The actuator of the central-positioned indoor high-voltage vacuum circuit breaker comprises a frame and partition boards; the partition boards are parallelly arranged inside the frame and a closing half shaft and a transmission shaft are parallelly arranged between the partition boards; a motor is arranged at the lower part of the partition board; the output shaft of the motor is provided with a small chain wheel; the small chain wheel drives a large chain wheel via a chain, and the large chain wheel is matched with the transmission shaft via a bearing; the transmission shaft is also provided with a clutch wheel, a crank arm and a cam; a limit groove is arranged on the end surface of the clutch wheel; the bottom of the limit groove is provided with a spring; one end of a limit block presses tightly against the spring, and the other end of the limit block is poked by a pin shaft fixed on the end surface of the large chain wheel; a hanging board on the crank arm is connected with one end of an energy storage spring, and the other end of the energy storage spring is fixed at the bottom of the frame; the closing half shaft is provided with a closing latch; the closing latch and a roller arranged on the end surface of the clutch wheel are contacted to complete energy storage; and the cam drives a connecting rod mechanism to drive an insulating pull rod and a moving contact to enter the closing position. The central-positioned indoor high-voltage vacuum circuit breaker has the advantages of reasonable layout, stable and reliable performances and compact structure.
Description
Technical field
The utility model relates to a kind of middle indoor high-voltage vacuum circuit breaker, supports the use three-phase alternating current 50(60 in 35kV electrical power trans mission/distribution system) Hz ring main unit and box-type substation.
Background technology
Primary cut-out is being undertaken the important task of overload, short-circuit protection and the control of power equipment in high-voltage power supply and distribution system.At present, in distribution system, the application of 35kV circuit breaker is more and more wider, as the critical elements in distribution system, to the reliability of circuit breaker and long-life, requires also more and more higher.Widely used 35kV indoor high-voltage vacuum circuit breaker in current domestic distribution system, mainly there is following defect: the one, breaker spring operating mechanism transmission is complicated, amount of parts is many, transmission efficiency is low, mechanism's action required merit is larger, cause circuit breaker each parts machining quality and the assembly crewman's of factory in manufacturing process assembling technical ability to require very high, transmission complexity in addition and parts increase cause the dispersed factor that mechanism's output characteristic exists to increase, more problems in user's use procedure, the actual machine life-span of operating mechanism only has left and right 4000 times; The 2nd, the separating brake bounce-back of circuit breaker is difficult to control, and can not meet standard-required; The 3rd, circuit breaker adopts console mode structure, selects the corresponding volume of cabinet size to increase while making to design, and the corresponding increase of manufacturing cost of circuit breaker and cabinet is large to infield area requirements.Above-mentioned defect, has restricted further developing of circuit breaker, is therefore necessary to improve.
Utility model content
The technical problem that the utility model solves: the middle indoor high-voltage vacuum circuit breaker that a kind of compact conformation, superior performance, flexible assembling are provided.
The technical solution adopted in the utility model: middle indoor high-voltage vacuum circuit breaker, there is cabinet, described cabinet is divided into three layers, upper strata is control room, middle level is breaker chamber, lower floor is the lower chamber that realizes cabinet additional function, described circuit breaker comprises operating mechanism, described operating mechanism comprises framework and dividing plate, described dividing plate is set in parallel in parallel combined floodgate semiaxis and the power transmission shaft of being provided with in framework and between dividing plate, motor is arranged on the lower partition, described motor output shaft is provided with minor sprocket, the hinge wheel that described minor sprocket coordinates with power transmission shaft by bearing by chain-driving, on power transmission shaft, castle wheel is also installed simultaneously, connecting lever and cam, on described castle wheel end face, be shaped with stopper slot, described stopper slot bottom is provided with spring, guide vane end stop one end holddown spring, the bearing pin that the guide vane end stop other end is fixed on hinge wheel end face is stirred, link plate on described connecting lever is connected with energy-stored spring one end, the described energy-stored spring other end is fixed on base of frame, described combined floodgate semiaxis is provided with closing pawl, described closing pawl completes energy storage with the roller contact that is arranged on castle wheel end face, described actuated by cams linkage drives insulated tension pole and moving contact to enter closing position.
Further, be also provided with worm gear on described motor output shaft, described dividing plate is provided with casing, and worm screw is fixed on casing and the axis of its axis and motor output shaft is vertical and mesh with worm gear.
Further, described dividing plate top is provided with spacer pin, and the lower partition is provided with limit shaft, and described spacer pin makes guide vane end stop and bearing pin throw off energy storage action; Described closing pawl comprises stage clip and sincere sub-axle, and described stage clip one end pushes against limit shaft, and the stage clip other end pushes against sincere sub-axial end.
The utility model compared with prior art integral layout is reasonable, and outward appearance is simple, and volume reduces, use face is wider, has reduced the floor space of transformer station, and number of components reduces simultaneously, stable and reliable for performance, compact conformation, has improved the consistency of circuit breaker mechanical property in life cycle.
Accompanying drawing explanation
Fig. 1 is the utility model structural front view;
Fig. 2 is the A-A cutaway view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing 1,2, a kind of embodiment of the present utility model is described.
Middle indoor high-voltage vacuum circuit breaker, has cabinet, and described cabinet is divided into three layers, upper strata is control room, middle level is breaker chamber, and lower floor is the lower chamber that realizes cabinet additional function, can need to place the auxiliary equipment such as metering handcart, middle pressure instrument transformer, lightning rod according to user.Described circuit breaker comprises operating mechanism, described operating mechanism comprises framework 1 and dividing plate 2, described dividing plate 2 is set in parallel in parallel combined floodgate semiaxis 3 and the power transmission shaft 4 of being provided with in framework 1 and between dividing plate 2, motor 4 is arranged on dividing plate 2 bottoms, described motor 4 output shafts are provided with minor sprocket 5, described minor sprocket 5 drives by chain 6 hinge wheel 7 coordinating with power transmission shaft 3 by bearing, can complete electric energy-stored by motor 4; On described motor 4 output shafts, be also provided with worm gear 19, described dividing plate 2 is provided with casing 20, worm screw 21 is fixed on casing 20 and the axis of its axis and motor 4 output shafts is vertical and with worm gear 19 engagements, can complete manual energy storage; On power transmission shaft 3, castle wheel 8, connecting lever 9 and cam 21 are also installed simultaneously, on described castle wheel 8 end faces, be shaped with stopper slot 10, described stopper slot 10 bottoms are provided with spring 11, guide vane end stop 12 one end holddown springs 11, the bearing pin 13 that guide vane end stop 12 other ends are fixed on hinge wheel 7 end faces is stirred, described dividing plate 2 tops are provided with spacer pin 21, and dividing plate 2 bottoms are provided with limit shaft 22, and described spacer pin 21 makes guide vane end stop 12 and bearing pin 13 throw off energy storage action; Link plate 17 on described connecting lever 9 is connected with energy-stored spring 18 one end, described energy-stored spring 18 other ends are fixed on framework 1 bottom, described combined floodgate semiaxis 3 is provided with closing pawl 15, described closing pawl 15 has contacted energy storage with the roller 16 that is arranged on castle wheel 8 end faces, described closing pawl 15 comprises stage clip 23 and sincere sub-axle 14, described stage clip 23 one end push against limit shaft 22, stage clip 23 other ends push against sincere sub-axle 14 end faces, and described cam 21 drive link mechanisms drive insulated tension pole and moving contact to enter closing position.
Stored energy operation: breaker closing institute energy requirement is provided by energy-stored spring 18.Energy storage both can be completed by external power source drive motors 4, also can use energy accumulation handle manually to complete.Stored energy operation is undertaken by the motor 4 that is fixed on dividing plate 2 bottoms, or utilizes hand rotation worm screw 21 to carry out.When electric energy-stored, by motor 4, drive minor sprocket 5 to rotate, minor sprocket 5 drives hinge wheel 7 to rotate by chain 6; Worm screw 21 engagements by worm gear 19 during manual energy storage drive minor sprocket 5 to rotate.When minor sprocket 5 rotates, by chain 6, drive hinge wheel 7, the guide vane end stop 12 that bearing pin 13 on hinge wheel 7 is stirred on castle wheel 8 rotates power transmission shaft 4, the connecting lever 9 that is arranged on power transmission shaft 4 two ends is connected with energy-stored spring 18 by link plate 17 and energy-stored spring 18 is stretched, while arriving energy storage position, the combined floodgate pallet 15 being arranged on combined floodgate semiaxis 3 withstands the roller 16 on castle wheel 8, simultaneously, spacer pin 21 on dividing plate 2 is thrown off guide vane end stop 12 and bearing pin 13, the connecting plate being simultaneously arranged on power transmission shaft 4 drives energy storage direction board flip displays " energy storage ", energy storage finishes, now circuit breaker is in combined floodgate standby condition.
Closing operation: in closing operation, no matter press " combined floodgate " button or remote operation with hand, make making electromagnet action, the pallet 15 that all can make to close a floodgate rotates, and the pallet 15 that makes to close a floodgate unclamps the roller 16 on castle wheel 8, energy-stored spring 18 shrinks, and rotates by power transmission shaft 4 band moving cams 21 simultaneously, cam 21 drive link mechanisms drive insulated tension pole and moving contact to enter closing position, feed motion completes, and the direction board of energy storage simultaneously, energy storage auxiliary switch reset, and motor 4 current supply circuits are connected.
Sub-switching operation: press " separating brake " button, or connect external power source and make tripping electromagnet action, make separating brake pallet and the release of separating brake semiaxis and realize sub-switching operation, the separation of arc control device dynamic/static contact.
Important technological parameters:
| Sequence number | Title | Unit | Data | |
| 1 | Rated voltage | kV | 40.5 | |
| 2 | Rated current | A | 2500 | |
| 3 | Rated frequency | Hz | 50 | |
| 4 | Rated short circuit drop-out current | kA | 31.5 | |
| 5 | Rated short circuit making current | kA | 80 | |
| 6 | Rated peak withstand current | kA | 80 | |
| 7 | Specified short time withstand current | kA | 31.5 | |
| 8 | Rated duration of short-circuit | s | 4 | |
| 9 | Nominal operation order | ? | O-0.3s-CO-180s- |
|
| 10 | Mechanical endurance | Inferior | 10000 | |
| 11 | Industrial frequency withstand voltage (over the ground/fracture) | kV | 95 | |
| 12 | Lightning impulse withstand voltage (peak value) | kV | 185 | |
| 13 | Clearance between open contacts | mm | 19±2 | |
| 14 | Contacting travel | ? | 4±1 | |
| 15 | Closing rebound | ms | ≤2 | |
| 16 | Splitting or integrating lock is the same period not | ? | ≤2 | |
| 17 | Average opening velocity (12mm separately) | m/s | 1.6～2.0 | |
| 18 | Average closing speed (whole process) | ? | 0.6～1.0 | |
| 19 | | ms | 20～50 | |
| 20 | Closing time | ? | 30～70 | |
| 21 | Loop resistance | μΩ | ≤45 |
In sum, the utility model is by again optimizing the structure of circuit breaker, transmission principle and breaker splitting lock cushioning device, circuit breaker volume is reduced greatly, mechanism is compacter, mechanical performance is more superior, has reduced on the one hand the manufacturing cost of circuit breaker and corollary equipment, has promoted on the other hand the mechanical property of circuit breaker, improve mechanism's life-span, there is very high practical value.
Above-described embodiment, is preferred embodiment of the present utility model, is not used for limiting the utility model practical range, and the equivalence of being done with content described in the utility model claim therefore all changes, within all should being included in the utility model claim scope.
Claims (3)
1. middle indoor high-voltage vacuum circuit breaker, there is cabinet, described cabinet is divided into three layers, upper strata is control room, middle level is breaker chamber, lower floor is the lower chamber that realizes cabinet additional function, it is characterized in that: described circuit breaker comprises operating mechanism, described operating mechanism comprises framework (1) and dividing plate (2), described dividing plate (2) is set in parallel in parallel combined floodgate semiaxis (3) and the power transmission shaft (4) of being provided with in framework (1) and between dividing plate (2), motor (4) is arranged on dividing plate (2) bottom, described motor (4) output shaft is provided with minor sprocket (5), described minor sprocket (5) drives the hinge wheel (7) coordinating with power transmission shaft (3) by bearing by chain (6), on power transmission shaft (3), castle wheel (8) is also installed simultaneously, connecting lever (9) and cam (21), on described castle wheel (8) end face, be shaped with stopper slot (10), described stopper slot (10) bottom is provided with spring (11), guide vane end stop (12) one end holddown spring (11), the bearing pin (13) that guide vane end stop (12) other end is fixed on hinge wheel (7) end face is stirred, link plate (17) on described connecting lever (9) is connected with energy-stored spring (18) one end, described energy-stored spring (18) other end is fixed on framework (1) bottom, described combined floodgate semiaxis (3) is provided with closing pawl (15), described closing pawl (15) has contacted energy storage with the roller (16) that is arranged on castle wheel (8) end face, described cam (21) drive link mechanism drives insulated tension pole and moving contact to enter closing position.
2. middle indoor high-voltage vacuum circuit breaker according to claim 1, it is characterized in that: on described motor (4) output shaft, be also provided with worm gear (19), described dividing plate (2) is provided with casing (20), and it is vertical and mesh with worm gear (19) that worm screw (21) is fixed on the axis of upper and its axis of casing (20) and motor (4) output shaft.
3. middle indoor high-voltage vacuum circuit breaker according to claim 1 and 2, it is characterized in that: described dividing plate (2) top is provided with spacer pin (21), dividing plate (2) bottom is provided with limit shaft (22), and described spacer pin (21) makes guide vane end stop (12) and bearing pin (13) throw off energy storage action; Described closing pawl (15) comprises stage clip (23) and sincere sub-axle (14), and described stage clip (23) one end pushes against limit shaft (22), and stage clip (23) other end pushes against sincere sub-axle (14) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713660.5U CN203521286U (en) | 2013-11-12 | 2013-11-12 | Central-positioned indoor high-voltage vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713660.5U CN203521286U (en) | 2013-11-12 | 2013-11-12 | Central-positioned indoor high-voltage vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521286U true CN203521286U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320713660.5U Expired - Fee Related CN203521286U (en) | 2013-11-12 | 2013-11-12 | Central-positioned indoor high-voltage vacuum circuit breaker |
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| CN (1) | CN203521286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112802706A (en) * | 2020-12-25 | 2021-05-14 | 天水长城开关厂集团有限公司 | Energy storage transmission and clutch system of spring mechanism of vacuum circuit breaker |
-
2013
- 2013-11-12 CN CN201320713660.5U patent/CN203521286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112802706A (en) * | 2020-12-25 | 2021-05-14 | 天水长城开关厂集团有限公司 | Energy storage transmission and clutch system of spring mechanism of vacuum circuit breaker |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20191112 |