CN201060787Y - Outdoors vacuum breaker - Google Patents
Outdoors vacuum breaker Download PDFInfo
- Publication number
- CN201060787Y CN201060787Y CNU2007201696881U CN200720169688U CN201060787Y CN 201060787 Y CN201060787 Y CN 201060787Y CN U2007201696881 U CNU2007201696881 U CN U2007201696881U CN 200720169688 U CN200720169688 U CN 200720169688U CN 201060787 Y CN201060787 Y CN 201060787Y
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- circuit breaker
- vacuum circuit
- insulating sleeve
- outdoor
- casing
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Abstract
The utility model relates to an outdoor vacuum circuit breaker, comprising a housing; three groups of insulators distributed according to three-phase are arranged on the housing; the insulator comprises an upper insulating bushing and a lower insulating bushing; wherein, a vacuum interrupter is arranged in the upper insulating bushing of each group, and an on-off pulling rod is arranged in each lower insulating bushing; the upper end of the on-off pulling rod is connected with a moving contact arranged in the vacuum interrupter and the lower end of the on-off pulling rod is connected with an on-off transmission mechanism; wherein, the circumferential wall of the vacuum interrupter is tightly combined with the inner peripheral wall of the upper insulating bushing through sealed material; the on-off transmission mechanism, which is a linear transmission mechanism is arranged in the housing. The utility model has the advantages of compact size, high efficiency, low power loss, simple structure, high reliability, simple assembly and low cost, capability to satisfy the requirement for grid development and increasing load of most users, reliable sealing performance; meanwhile, the utility model can be operated outdoor for long time and the requirement of different users can be met.
Description
Technical field
The utility model relates to a kind of vacuum circuit-breaker, especially a kind of big electric current, fixed sealing type, the straight-line outdoor vacuum circuit breaker of employing.
Background technology
At present, multiple models such as known vacuum circuit-breaker, particularly 35kV outdoor high-voltage vacuum breaker, early stage have heavy wool and a phase structure; Develop into few oil, three-phase combined type structure to the seventies; Beginning to occur with SF6 (sulphur hexafluoride) gas to the eighties is the SF6 circuit breaker of arc extinguishing and dielectric; Begin exploitation and produce the 35kV outdoor vacuum circuit breaker to the nineties.But the external insulation of vacuum interrupter its objective is that based on SF6 and silicone grease (1) produces condensation in order to prevent product to be subjected to Temperature Influence when using out of doors, causes insulation fault; (2) the insulation distance problem of smaller of solution vacuum extinction formula outer surface and internal surface of casing; Sleeve pipe is based on porcelain bushing.The supporting driving mechanism of circuit breaker is mainly based on electromagnetic mechanism and spring mechanism, and the divide-shut brake drive system is the rotation mode motion, and power loss is big.Mainly contain following several form:
1, known SF6 or oily formula circuit breaker, its model is based on SW7 (8)-40.5kV, and structural shape is the Threephase common-box structure, the adapted electromagnetic operating mechanism.Its shortcoming is: (1) volume is big, the circuit breaker unstable properties; (2) circuit breaker to cut-off capacity little, do not satisfy the requirement of power network development; (3) accident takes place frequently, maintenance load is big; (4) arc extinguishing is unreliable, leakage of oil is serious, causes environmental pollution.
2, another kind is known is the vacuum circuit-breaker of external insulation medium with SF6 or silicone grease, and its product type is more.Products characteristics is: with the vacuum interrupter arc extinguishing, be external insulation with SF6 gas, threephase current transformer is contained in the porcelain bushing inside of circuit breaker.Owing to adopt the vacuum interrupter arc extinguishing, it cut-offs capacity and improves, and has satisfied the requirement of certain customers; Threephase current transformer is installed on the body,, has been widened the scope of application of product for the automation of product and the designs simplification of transformer station provide condition.But owing to adopt SF6 gas is external insulation, makes that product structure design is complicated, cost is high, gives to produce and maintenance brings certain difficulty; Because current transformer is contained in inside pipe casing, makes that the capacity of instrument transformer is less, no-load voltage ratio is few; And volume is bigger, is not suitable for the construction requirements of miniaturization transformer station.Because gas leakage and the problem of leaking silicone grease, the maintenance and the environment of equipment all brought unfavorable factor.
3, another is based on the circuit breaker of glue seal technology, as No. 200520085620.6 disclosed structure of Chinese patent, this vacuum circuit-breaker is a three-phase column support type structure, and vacuum interrupter and sleeve pipe adopt the technology of silicone grease potting to solve the outer insulating material problem of switching tube; Last insulating sleeve adopts indoor epoxy resin and silicon rubber compound inslation technology to produce, and following insulating sleeve adopts porcelain bushing; Driving mechanism adopts spring mechanism, and current transformer is external.The defective of this circuit breaker is: important technological parameters is low, it is little to cut-off capacity, and the silicone grease sealing is unreliable, easily reveals, and do not satisfy user's requirement.
The design people at above problems of the prior art, proposes the outdoor big electric current of 35KV that is used for of the present utility model based on the research and development for many years to the present technique field, and solid sealing type vacuum circuit breaker can overcome the defective that prior art exists effectively.
The utility model content
The technical problems to be solved in the utility model is: a kind of vacuum circuit-breaker is provided, and especially a kind of big electric current, fixed sealing type, complete outdoor epoxy resin, the kind of drive adopt straight-line outdoor vacuum circuit breaker.It is low to have overcome the vacuum interrupter parameter that known technology exists, the condensation of following insulating sleeve inwall, defective such as the kind of drive is rotation, and mechanism's power loss is big.
For this reason, a kind of outdoor vacuum circuit breaker that the utility model proposes, has a casing, three groups of insulated columns that distribute by three-phase are arranged on the described casing, described insulated column comprises, following insulating sleeve, wherein, on each group, be equipped with vacuum interrupter in the insulating sleeve, be equipped with the divide-shut brake pull bar in the following insulating sleeve, the indoor moving contact of the top of described divide-shut brake pull bar and vacuum extinction is connected, the bottom of divide-shut brake pull bar and branch, the combined floodgate transmission mechanism is connected, and wherein, the periphery wall of described vacuum interrupter and the internal perisporium of last insulating sleeve are closely linked by fixed sealing material; Described branch, combined floodgate transmission mechanism are line transmission mechanism always, and are arranged in the described casing.
Aforesaid outdoor vacuum circuit breaker, wherein, described straight-line transmitting actuation mechanism has moving always bar, described straight moving bar is provided with a power input pad and three transmission crank arm, one end of described transmission crank arm is rotationally connected with described straight moving bar, another swinging end of connecting lever is connected with the bottom of described divide-shut brake pull bar, and the flex point of described connecting lever and casing articulate, and described power input pad is connected with a driving mechanism.
Aforesaid outdoor vacuum circuit breaker, wherein, an end of a separating brake extension spring is fixedlyed connected with described straight moving bar, and the other end is connected with described casing.
Aforesaid outdoor vacuum circuit breaker, wherein, a buffer is arranged on the front side of described straight moving bar, and corresponding with the swinging end of a transmission crank arm that is arranged on straight moving bar front portion.
Aforesaid outdoor vacuum circuit breaker, wherein, described driving mechanism has a driving connecting lever that can swing, and this driving connecting lever is connected with described power input pad.
Aforesaid outdoor vacuum circuit breaker, wherein, described on each the bottom of insulating sleeve be respectively equipped with the three-phase outlet board, described each divide-shut brake pull bar top is provided with conductive clip, is connected by the parts that are flexible coupling between described outlet board and the conductive clip.
Aforesaid outdoor vacuum circuit breaker, wherein, described upper and lower insulating sleeve is made by outdoor epoxide resin material, and following insulating sleeve inside is provided with full skirt.
Aforesaid outdoor vacuum circuit breaker, wherein, the outside of described outdoor vacuum circuit breaker is provided with current transformer, is connected by the parts that are flexible coupling between the outlet board of this current transformer bottom being arranged on insulating sleeve.
Aforesaid outdoor vacuum circuit breaker, wherein, described outdoor vacuum circuit breaker has a support, and described casing is fixed on the support, and the driving mechanism of described straight-line transmitting actuation mechanism is arranged on the bottom of described casing, also is provided with terminal box in the bottom of this casing.
Advantage of the present utility model and characteristics are:
1, rational in infrastructure, good looking appearance of the present utility model, volume is little, reliability is high, volume only is 1/2 of a like product.Casing adopts stainless steel material to make, and antirust, long service life plays the effect of beautifying the environment.Because volume is little, the floor space of having dwindled transformer station meets the requirement of advocating thriftiness at present and promoting the miniaturization unattended substation.
2, adopt and to seal insulation technology admittedly, vacuum interrupter and last insulating sleeve are closely linked by fixed sealing material, solved and utilized SF6 gas or silicone grease in the known technology as all problems that external insulation brought.Simple in structure, the major loop tie point reduces, and temperature rise reduces, good reliability; Production, assembly technology optimization, the efficient height is a kind of non-maintaining, environmentally friendly machine.
3, branch, combined floodgate transmission mechanism adopt the straight line transmission principle, and the efficient height, energy loss is little, simple in structure, reliability is high, installation is simple and easy, low cost and other advantages.
4, outdoor vacuum circuit breaker structure technology parameter height of the present utility model, rated current can reach 2000A, can satisfy the demand that power network development and most of customer charge increase.
5, the profile of upper and lower insulating sleeve adopts airflow design, and the lines flow smoothly, elegant in appearance; Outside full skirt antifouling property is good.Following insulating sleeve reasonable in design, it is good that inner umbrella skirt construction designs anti-condensation performance.Adopt outdoor epoxide resin material and APG (pressure gel) technology, the technological level height, anti-aging, anti-ultraviolet property is strong.
6, adopt spring mechanism, itself and vacuum interrupter matching performance are superior, and arc extinction performance is good, reliability height, long service life.And described spring mechanism outside is provided with mechanism's cover, and seals the bottom that is arranged on casing, because this mechanism's cover sealing property is reliable, therefore can move out of doors for a long time.
7, current transformer is selected outdoor type for use, installs rationally, and the technical parameter height is fit to outdoor operation, can satisfy the requirement of different user.
Description of drawings
Fig. 1 looks schematic diagram for the master of outdoor vacuum circuit breaker of the present utility model;
Fig. 2 is the schematic side view of outdoor vacuum circuit breaker of the present utility model;
Fig. 3 has removed the structural representation of the insulated column of time insulating sleeve for outdoor vacuum circuit breaker of the present utility model;
Fig. 4 is branch, the combined floodgate transmission mechanism schematic diagram of outdoor vacuum circuit breaker of the present utility model;
Fig. 5 is last insulating sleeve structural representation;
Fig. 6 is the structural representation of following insulating sleeve.
Embodiment
For having clear more to feature, the effect of the outdoor vacuum circuit breaker of utility model and the technical purpose that will reach and comprehensively understanding, now contrast description of drawings embodiment of the present utility model.
As Fig. 1,2, shown in 3, outdoor vacuum circuit breaker of the present utility model, has support 6, be fixed with casing 5 on the described support 6, three groups of insulated columns 20 that distribute by three-phase are arranged on the described casing 5, described insulated column 20 comprises, following insulating sleeve 2,3, on each group, be equipped with vacuum interrupter 21 in the insulating sleeve 2, be equipped with divide-shut brake pull bar 31 in the following insulating sleeve 3, the top of described divide-shut brake pull bar 31 is stretched in the vacuum interrupter 21, and be connected with moving contact, the bottom of divide-shut brake pull bar 31 and branch, combined floodgate transmission mechanism 4 is connected, wherein, the internal perisporium of the periphery wall of described vacuum interrupter 21 and last insulating sleeve 2 is closely linked by fixed sealing material 22; Described branch, combined floodgate transmission mechanism 4 are line transmission mechanism always, and are arranged in the described casing 5.The driving mechanism 7 of described straight-line transmitting actuation mechanism 4 is arranged on the bottom of described casing 5, also is provided with terminal box 8 in the bottom of this casing 5.The disconnected portion of above-mentioned divide-shut brake pull bar 31 is provided with insulating barrier.
But the adjusting rod 32 that preferably connects a bidirectional modulation length in the lower end of described divide-shut brake pull bar 31 can be adjusted the length of divide-shut brake pull bar 31 by adjusting nut, thereby guarantees the action accuracy of vacuum circuit-breaker branch, combined floodgate.
Please cooperate referring to Fig. 3, three-phase lead-in line row 1 is separately positioned on described three and goes up insulating sleeve 2 outsides, be connected by the fixed contact in conducting rod 26 and the vacuum interrupter 21, described three-phase outlet board 23 is separately fixed at the bottom of insulating sleeve 2, is electrically connected by the parts 25 that are flexible coupling between described outlet board 23 and the conductive clip 24 that is arranged on divide-shut brake pull bar top.One contact pressure spring 33 is arranged on the upper end of divide-shut brake pull bar 31 with known structure, described contact pressing spring 33 is compressed during combined floodgate, store certain pressure, guarantee the operating pressure of the dynamic/static contact in the vacuum interrupter 21, energy is provided when simultaneously, the power of described contact pressure spring 33 storages is also for separating brake.In the present embodiment, upper and lower insulating sleeve 2,3 all can adopt the outdoor epoxide resin material of import hydrophobicity, make with pressure gel APG technology, and Fig. 5 is the structural representation of last insulating sleeve 2, and Fig. 6 is the structural representation of following insulating sleeve 3.The appearance design of described upper and lower insulating sleeve 2,3 is a streamlined structure, and outside umbrella skirt construction satisfies the anti-fouling type requirement, and following insulating sleeve 3 inner wall belt full skirts 34 have prevented the condensation problem of time insulating sleeve 3 inwalls effectively.
The outside of described vacuum circuit-breaker is provided with current transformer 10, is connected by the parts 9 that are flexible coupling between this current transformer 10 and the described outlet board 23.
In the present embodiment, current transformer 10 adopts external structure, and the external belt full skirt is made by outdoor resin material, can accomplish four no-load voltage ratios, four coils, and capacity reaches 50VA.Be communicated with major loop by flexible link 9, the damage that the vibration in can effectively preventing to transport brings between current transformer 10 and the circuit breaker.The secondary lead wires of current transformer 10 adopts the flexible pipe of outdoor use to be incorporated in the terminal box 8 of circuit breaker, can effectively prevent the aging of secondary line.
Shown in Fig. 1,4, described straight-line transmitting actuation mechanism 4 has moving always bar 41, described straight moving bar 41 is provided with a power input pad 42 and three transmission crank arm 43, one end of described transmission crank arm 43 is rotationally connected with described straight moving bar 41, another swinging end of connecting lever 43 is connected with the bottom of described divide-shut brake pull bar 31, the flex point of described connecting lever 43 and casing 5 articulate, and described power input pad 42 is connected with a driving mechanism 7.
One buffer 45 is arranged on the front side of described straight moving bar 41, and corresponding with the swinging end of a transmission crank arm 43 that is arranged on straight moving bar 41 front portions.Rear portion at described straight moving bar 41 is fixedly connected with separating brake extension spring 44, and the other end of this separating brake extension spring 44 is connected with described casing.
Described driving mechanism 7 is the spring mechanism of known 35kV special use, and the outside of this spring mechanism is provided with mechanism's cover 72, and seals the bottom that is installed in casing 5, and then described spring mechanism is sealed in mechanism's cover.This driving mechanism 7 has one by power drive, the driving connecting lever 71 that can swing, and this driving connecting lever 71 is connected with described power input pad 42.
Owing to seal insulation technology admittedly between vacuum interrupter 21 of the present utility model and the last insulating sleeve, being about to the periphery wall of described vacuum interrupter 21 and the internal perisporium of last insulating sleeve 2 is closely linked by fixed sealing material 22, and with main conductive circuit when sealing admittedly also simultaneously the assembling finish, therefore of the present utility model simple in structure, the main conductive circuit tie point is few, reduce caloric value, improved reliability.
Described vacuum interrupter 21 can adopt one-step seal-exhaust technology to make, in 35KV great-current fixed sealing type outdoor vacuum circuit breaker, its rated current is 2000A, and rated short circuit drop-out current is 31.5kA, improve the capacity that cut-offs of product, can satisfy the demand of power network development.
In the present embodiment, described power input pad 42 is a triangle support body, fixedlys connected with described straight moving bar 41 in the base of this triangle support body, fixedlys connected with described driving connecting lever 71 in its top.Under driving connecting lever 71 drives of moving that swing, drive straight moving bar 41 side-to-side movements by power input pad 42, and move up and down by connecting lever 43 drive divide-shut brake pull bars 31, vacuum interrupter 21 realizations divide, closing operation thereby make.
Its operating process is: when carrying out breaker open operation, driving connecting lever 71 swings to the right, and by the motion to the right together of the straight moving bar 41 of power input pad 42 drives, simultaneously, the separating brake extension spring 44 that is connected with straight moving bar 41 also applies a pulling force that moves right to straight moving bar 41, with guarantee reliably, opening velocity fast.Under the drive of described straight moving bar 41, three connecting lever 43 swinging ends that are connected with described straight moving bar 41 are rotated counterclockwise, and drive divide-shut brake pull bar 31 and move down, and then the moving contact in the vacuum interrupter 21 separates with fixed contact, finishes sub-switching operation.When the swinging end of three connecting levers 43 was rotated counterclockwise, the swinging end that is arranged on the transmission crank arm 43 of straight moving bar 41 front portions was depressed described buffer 45 when moving downward, unnecessary energy when buffer 45 can absorb breaker open operation.Preferred described buffer 45 adopts oil bumper.Drive mechanism of the present utility model is simple, and energy loss is little, and is easy for installation, and cost is low, and the reliability height.
The above person of thought, it only is specific embodiment of the utility model, when can not limiting the scope that the utility model is implemented with this, i.e. equivalent variations and the modification of being done according to the utility model content of the patent generally all should still belong in the scope that the utility model claims contain.
Claims (9)
1. outdoor vacuum circuit breaker, has a casing, three groups of insulated columns that distribute by three-phase are arranged on the described casing, described insulated column comprises upper and lower insulating sleeve, wherein, on each group, be equipped with vacuum interrupter in the insulating sleeve, be equipped with the divide-shut brake pull bar in the following insulating sleeve, the indoor moving contact of the top of described divide-shut brake pull bar and vacuum extinction is connected, the bottom of divide-shut brake pull bar is connected with branch, combined floodgate transmission mechanism, it is characterized in that: the periphery wall of described vacuum interrupter and the internal perisporium of last insulating sleeve are closely linked by fixed sealing material; Described branch, combined floodgate transmission mechanism are line transmission mechanism always, and are arranged in the described casing.
2. outdoor vacuum circuit breaker as claimed in claim 1, it is characterized in that: described straight-line transmitting actuation mechanism has moving always bar, described straight moving bar is provided with a power input pad and three transmission crank arm, one end of described transmission crank arm is rotationally connected with described straight moving bar, another swinging end of connecting lever is connected with the bottom of described divide-shut brake pull bar, the flex point of described connecting lever and casing articulate, and described power input pad is connected with a driving mechanism.
3. outdoor vacuum circuit breaker as claimed in claim 2 is characterized in that: an end of a separating brake extension spring is fixedlyed connected with described straight moving bar, and the other end is connected with described casing.
4. outdoor vacuum circuit breaker as claimed in claim 2 is characterized in that: a buffer is arranged on the front side of described straight moving bar, and corresponding with the swinging end of a transmission crank arm that is arranged on straight moving bar front portion.
5. outdoor vacuum circuit breaker as claimed in claim 2 is characterized in that: described driving mechanism has a driving connecting lever that can swing, and this driving connecting lever is connected with described power input pad.
6. outdoor vacuum circuit breaker as claimed in claim 1, it is characterized in that: described on each the bottom of insulating sleeve be respectively equipped with the three-phase outlet board, described each divide-shut brake pull bar top is provided with conductive clip, is connected by the parts that are flexible coupling between described outlet board and the conductive clip.
7. outdoor vacuum circuit breaker as claimed in claim 1 is characterized in that: described upper and lower insulating sleeve is made by outdoor epoxide resin material, and following insulating sleeve inside is provided with full skirt.
8. outdoor vacuum circuit breaker as claimed in claim 1 is characterized in that: the outside of described outdoor vacuum circuit breaker is provided with current transformer, is connected by the parts that are flexible coupling between the outlet board of this current transformer bottom being arranged on insulating sleeve.
9. as the described outdoor vacuum circuit breaker of claim 1 to 8, it is characterized in that: described outdoor vacuum circuit breaker has a support, described casing is fixed on the support, and the driving mechanism of described straight-line transmitting actuation mechanism is arranged on the bottom of described casing, also is provided with terminal box in the bottom of this casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201696881U CN201060787Y (en) | 2007-07-12 | 2007-07-12 | Outdoors vacuum breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201696881U CN201060787Y (en) | 2007-07-12 | 2007-07-12 | Outdoors vacuum breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201060787Y true CN201060787Y (en) | 2008-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201696881U Expired - Fee Related CN201060787Y (en) | 2007-07-12 | 2007-07-12 | Outdoors vacuum breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201060787Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915865A (en) * | 2012-09-28 | 2013-02-06 | 宁波鑫鑫鑫寅电气有限公司 | High altitude outdoor vacuum circuit breaker |
| CN105161352A (en) * | 2015-09-23 | 2015-12-16 | 陕西西高开关有限责任公司 | Novel high-voltage circuit breaker |
| CN106206150A (en) * | 2016-08-31 | 2016-12-07 | 正泰电气股份有限公司 | 27.5kV outdoor single-phase railway vacuum circuit breaker special |
| CN112837978A (en) * | 2021-01-21 | 2021-05-25 | 潘建星 | High-voltage circuit breaker switch with overload power-off alarm function |
-
2007
- 2007-07-12 CN CNU2007201696881U patent/CN201060787Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915865A (en) * | 2012-09-28 | 2013-02-06 | 宁波鑫鑫鑫寅电气有限公司 | High altitude outdoor vacuum circuit breaker |
| CN105161352A (en) * | 2015-09-23 | 2015-12-16 | 陕西西高开关有限责任公司 | Novel high-voltage circuit breaker |
| CN106206150A (en) * | 2016-08-31 | 2016-12-07 | 正泰电气股份有限公司 | 27.5kV outdoor single-phase railway vacuum circuit breaker special |
| CN112837978A (en) * | 2021-01-21 | 2021-05-25 | 潘建星 | High-voltage circuit breaker switch with overload power-off alarm function |
| CN112837978B (en) * | 2021-01-21 | 2023-05-09 | 浙江赫斯电气有限公司 | High-voltage circuit breaker switch with overload outage alarming function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20120712 |