CN204480909U - A kind of thermal resistance formula on-load switch conductor plate syndeton - Google Patents
A kind of thermal resistance formula on-load switch conductor plate syndeton Download PDFInfo
- Publication number
- CN204480909U CN204480909U CN201520088361.6U CN201520088361U CN204480909U CN 204480909 U CN204480909 U CN 204480909U CN 201520088361 U CN201520088361 U CN 201520088361U CN 204480909 U CN204480909 U CN 204480909U
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- China
- Prior art keywords
- conductor plate
- load switch
- memorial alloy
- nut
- serpentine conductor
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Abstract
The utility model discloses a kind of thermal resistance formula on-load switch conductor plate syndeton, between the nut connecting serpentine conductor plate and conducting block bolt and serpentine conductor body plate, be equipped with memorial alloy pad between nut and conducting block, connection serpentine conductor plate and electricity export between the nut of cable bolt and serpentine conductor plate, between serpentine conductor plate and output cable and are equipped with memorial alloy pad; After have employed such scheme, owing to being equipped with memorial alloy pad at connecting portion, memorial alloy pad has temperature deformation and high damping two kinds of functions when the temperature increases, memorial alloy generation deformation, fits more with joint, and junction contacts resistance can reduce, from Joule law, conductor joint heating can be alleviated, and the rising of connector temperature can be alleviated, and ensure that on-load switch can long-time safe and reliable work.
Description
Technical field
The utility model relates in 6-35 kilovolt presses electric field, the espespecially technical field of thermal resistance formula on-load switch.
Background technology
Current, the thermal resistance formula on-load switch structure used in electric line comprises an input, the outside coated insulation pottery of input, output is insulation porcelain knob moving up and down, and electric conductor is established in insulation porcelain knob inside, and bottom connects output cable, insulation porcelain knob outside is provided with and pushes away handle, insulation porcelain knob can be driven to move up and down thus reach the object of switch, and this on-load switch structure is simple, quick action.But the contact-making surfaces such as the conductor connection that electric conductor connects with cable, moving contact and fixed contact of isolating switch junction contact instability, larger with change in pressure, vibration to a certain degree can be there is in on-load switch when electric current flows through, fastening bolt now can loosen, and on-load switch is easily by electric arc burn.Joint passes into electric current a period of time, joint can generate heat, when temperature is too high, the surface of conductor contact junction will be oxidized strongly, produce the sull of high resistivity, and the elasticity of common spring shim and pressure can decline simultaneously, contact-making surface reduces, contact resistance increases, and temperature just raises further, and contact position thus may be caused to loosen or scorification.Also will manually go after common on-load switch burns out to change on-load switch, user needs the on-load switch that preparation is new in advance, and in the process changing on-load switch, misoperation or layman change the accident that may cause harm personal safety.
Utility model content
The purpose of this utility model is to provide one to ensure that on-load switch reliability of operation, fail safe, and extends the conductor plate syndeton in useful life of on-load switch.
For achieving the above object, a kind of thermal resistance formula of the utility model on-load switch conductor plate syndeton, output cable is bolted with in insulation porcelain knob bottom, wherein, insulation porcelain knob bottom is provided with the conducting block be electrically connected with the porcelain knob internal current conductor that insulate, one serpentine conductor plate is screwed together by bolt and conducting block, output cable is bolted with in the middle part of serpentine conductor plate, between the nut connecting serpentine conductor plate and conducting block bolt and serpentine conductor plate, memorial alloy pad is equipped with between nut and conducting block, isolating switch moving contact afterbody nut be equipped with between conducting block memorial alloy pad be connected serpentine conductor plate and electricity export between the nut of cable bolt and serpentine conductor body plate, memorial alloy pad is equipped with between serpentine conductor plate and output cable.
After have employed such scheme, conventional spacers is replaced owing to all adopting memorial alloy pad in all bolted connection positions, memorial alloy pad has temperature deformation and high damping two kinds of functions, when the temperature increases, and memorial alloy generation deformation, more fit with joint, junction contacts resistance can reduce, and from Joule law, conductor joint heating can be alleviated, the rising of connector temperature can be alleviated, and ensure that on-load switch can long-time safe and reliable work.
Accompanying drawing explanation
Fig. 1 is the utility model on-load switch structural representation;
Fig. 2 is the utility model on-load switch connecting portion structural representation;
Fig. 3 is that the utility model serpentine conductor plate and conducting block connecting portion structure cut open intention;
Fig. 4 is that the utility model serpentine conductor plate and cable connecting part structure cut open intention.
Label declaration:
1, on-load switch; 11, input; 12, insulate porcelain knob; 121, conducting block; 13, S " shape conductor plate; 14, output cable 14; 15, the first bolt; 151, the first screw rod; 152, the first nut; 153, the first nut; 16, memorial alloy pad; 17, the second bolt; 171, the second nut.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
On-load switch generally has three-phase to input, and because structure is identical, this case only describes the structure of a wherein phase.Refer to shown in Fig. 1, the utility model on-load switch 1 is by input 11, insulation porcelain knob 12, S " shape conductor plate 13, output cable 14 form.As shown in Figure 2, insulation porcelain knob 12 bottom is provided with the conducting block 121 be connected with porcelain knob 12 internal current conductor that insulate, and conducting block 121 is connected with serpentine conductor plate 13 by the first bolt 15.As shown in Figure 3, first screw rod 151 of the first bolt 15 is combined with the first nut 152 through serpentine conductor plate 13 and conducting block 121, is provided with memorial alloy pad 16a, is provided with memorial alloy pad 16b between the first nut 152 and conducting block 121 between the first nut 153 and serpentine conductor plate.Memorial alloy pad (not shown) is equipped with between isolating switch moving contact afterbody nut and conducting block.As shown in Figure 2,4, output cable 14 is bolted with the second bolt 17 in the middle part of serpentine conductor plate 13, between second nut 171 and serpentine conductor plate 13 of the second bolt 17, be provided with memorial alloy pad 16c, between serpentine conductor plate 13 and output cable 14, be provided with memorial alloy pad 16d.
During work, when circuit is in normal operation state, the electric current flowing through on-load switch is little, when the heat produced is less, memorial alloy pad is in initial condition, and deformation does not occur, joint contact-making surface contact is intact, and contact resistance is less, and on-load switch is in normal operating conditions.When the electric current flowing through on-load switch arrives greatly certain value, the temperature that big current produces in on-load switch raises, on-load switch generation vibration to a certain degree can be made, screw bolt and nut can loosen, contact-making surface between conductor plate is loosened, now, this getting loose can be stoped because memorial alloy pad has high damping; When the heat that big current produces on on-load switch increases, memorial alloy pad can work rapidly after being heated, there is deformation, fastening bolt, nut and conductor plate, ensure that the contact-making surface contact between conductor plate is intact, contact-making surface area increases, reduce the contact resistance value of on-load switch, the heat produced in on-load switch is alleviated, and the rising of connector temperature can be alleviated, and ensure that on-load switch is long-time, safety, reliability service.
The on-load switch that have employed the utility model scheme is compared common on-load switch and is compared, and after common on-load switch is subject to External Force Acting, first elastic deformation occurs, reach yield point, metal just produces plastic deformation, just produces permanent deformation after stress elimination.Have employed the on-load switch of memory alloy material, be at high temperature cooled to low temperature after setting and apply distortion, form permanent set, permanent set disappears when heated, and the shape had under returning to high temperature, then when carrying out heating or cooling, form trait is constant.Thus the fail safe of this novel on-load switch, reliability increase substantially, and serve energy-conservation effect, reduce operating cost.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent shapes or Structural Transformation; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. a thermal resistance formula on-load switch conductor plate syndeton, output cable is bolted with in insulation porcelain knob bottom, it is characterized in that: insulation porcelain knob bottom is provided with the conducting block be electrically connected with the porcelain knob internal current conductor that insulate, one serpentine conductor plate upper end is screwed together by bolt and conducting block, output cable is bolted with in the middle part of serpentine conductor plate, connect between the nut of serpentine conductor plate and conducting block bolt and serpentine conductor plate and be equipped with memorial alloy pad, memorial alloy pad is equipped with between isolating switch moving contact afterbody nut and conducting block, between the nut connecting serpentine conductor plate and electric output cable bolt and serpentine conductor body plate, memorial alloy pad is equipped with between serpentine conductor plate and output cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088361.6U CN204480909U (en) | 2015-02-09 | 2015-02-09 | A kind of thermal resistance formula on-load switch conductor plate syndeton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088361.6U CN204480909U (en) | 2015-02-09 | 2015-02-09 | A kind of thermal resistance formula on-load switch conductor plate syndeton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204480909U true CN204480909U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520088361.6U Expired - Fee Related CN204480909U (en) | 2015-02-09 | 2015-02-09 | A kind of thermal resistance formula on-load switch conductor plate syndeton |
Country Status (1)
| Country | Link |
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| CN (1) | CN204480909U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286085A (en) * | 2018-10-15 | 2019-01-29 | 国网河南省电力公司济源供电公司 | One kind preventing heavy-current bus-bars interface superheater |
| CN111520381A (en) * | 2020-04-30 | 2020-08-11 | 广东电网有限责任公司东莞供电局 | Bolt assembly and primary equipment |
| CN112038158A (en) * | 2020-07-16 | 2020-12-04 | 湖南长高高压开关集团股份公司 | Method for processing abnormal temperature rise of isolating switch and isolating switch |
| CN113381214A (en) * | 2021-04-27 | 2021-09-10 | 国网浙江省电力有限公司东阳市供电公司 | Connecting structure capable of reducing heating of wiring terminal |
-
2015
- 2015-02-09 CN CN201520088361.6U patent/CN204480909U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286085A (en) * | 2018-10-15 | 2019-01-29 | 国网河南省电力公司济源供电公司 | One kind preventing heavy-current bus-bars interface superheater |
| CN111520381A (en) * | 2020-04-30 | 2020-08-11 | 广东电网有限责任公司东莞供电局 | Bolt assembly and primary equipment |
| CN111520381B (en) * | 2020-04-30 | 2022-01-18 | 广东电网有限责任公司东莞供电局 | Bolt assembly and primary equipment |
| CN112038158A (en) * | 2020-07-16 | 2020-12-04 | 湖南长高高压开关集团股份公司 | Method for processing abnormal temperature rise of isolating switch and isolating switch |
| CN113381214A (en) * | 2021-04-27 | 2021-09-10 | 国网浙江省电力有限公司东阳市供电公司 | Connecting structure capable of reducing heating of wiring terminal |
| CN113381214B (en) * | 2021-04-27 | 2023-12-15 | 国网浙江省电力有限公司东阳市供电公司 | Connection structure capable of reducing heating of wiring terminal |
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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 |
Granted publication date: 20150715 Termination date: 20180209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |