CN203300586U - 35 kV falling type fuse - Google Patents
35 kV falling type fuse Download PDFInfo
- Publication number
- CN203300586U CN203300586U CN2013202150748U CN201320215074U CN203300586U CN 203300586 U CN203300586 U CN 203300586U CN 2013202150748 U CN2013202150748 U CN 2013202150748U CN 201320215074 U CN201320215074 U CN 201320215074U CN 203300586 U CN203300586 U CN 203300586U
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- China
- Prior art keywords
- contact
- fuse
- moving contact
- upper moving
- spring
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model provides a 35 kV falling type fuse. The technology scheme is employed as follows: the 35 kV falling type fuse comprises a fuse tube, an insulator, an upper support, a static contact fixedly arranged on the upper support, an upper moving contact, an upper electrical connection wiring card, a lower support, a lower contact of the fuse tube, a lower contact of a tube fuse device and a lower electrical connection wiring card; a spring is arranged between the upper moving contact and the upper support; and spring is vertical to the contact surface of the upper moving contact and the upper support. The upper moving contact is contacted with the upper static contact in an arc manner, big-area contact is achieved, heat generation of the contacts is reduced, and the fuse frequency is reduced. And the spring vertically connected with the upper moving contact is employed, the bearing force of the contact surface of the moving contact and the static contact is increased, the pressure is increased, and generation heat of the contacts of the fuse is further reduced.
Description
Technical field
The utility model relates to a kind of fuse.
Background technology
The major function of fuse is that equipment in circuit is shielded.During use; fuse is serially connected with in circuit, and when normal, fuse allows by certain electric current; when circuit is short-circuited or seriously transship; in fuse, flow through very large fault current, when the heat of the electric current generation of flowing through fuse reaches the fusing point of fuse, fuse failure; the fuse action; cut off circuit, thereby play the effect of equipment in the protection loop, this is normal protection fusing.During the fuse action, with deadweight, guarantee that fuse disconnects reliable, and easily find obvious cut-off point after fusing.Simultaneously it have simple in structure, low price, easy to operate, adapt to the characteristics such as outdoor environment is strong,
But the 35kV fuse becomes power-off fault interim, and the ratio of the fault total failare number of times that causes due to drop out fuse fusing is very high.Meanwhile, process the workload that 35kV fuse switch fusing defect has increased power department greatly, taken the larger resources of production, also increased user's interruption duration, affect power supply reliability.Trace it to its cause, fuse contact heating is the main cause that causes the fuse blows frequency high, and the fuse contact heating be due to the dynamic/static contact interface pressure not, contact slap, " the fuse heat expansion is elongated " etc.
Summary of the invention
Technical problem to be solved in the utility model is to provide that a kind of dynamic/static contact contact area is large, contact is difficult for loosening 35kV fuse switch.For this reason, the utility model is by the following technical solutions: it comprises fusion tube, insulator, upper bracket, is fixed on the upper static contact on upper bracket, the upper moving contact that is connected with fusion tube, upper electrical connection wiring card, it also comprises contact and lower electrical connection wiring card under contact under lower carriage, fusion tube, fusion tube device, between upper moving contact and upper bracket, be provided with spring, the contact-making surface of described spring and upper moving contact and upper bracket quadrature.
On the basis of adopting above technical scheme, the utility model can also adopt following further scheme:
Described upper moving contact top is circular-arc, realizes that it contacts with the circular arc of upper static contact.
Owing to having adopted the technical solution of the utility model, the utility model adopts upper moving contact and the upper static contact of circular arc contact, has realized the larger area contact, makes the contact caloric value reduce, and has reduced the fusing frequency.Simultaneously, the utility model has also adopted and upper moving contact spring connected vertically, makes the stressed increasing of contact-making surface of moving contact and fixed contact, has namely increased pressure, has further reduced the caloric value of fuse contact.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the partial enlarged drawing of A in Fig. 1.
Embodiment
With reference to accompanying drawing.
The utility model comprises fusion tube 3, insulator 4, upper bracket 6, is fixed on the upper static contact 9 on upper bracket, the upper moving contact 5 that is connected with fusion tube, upper electrical connection wiring card 8, it also comprises contact 1 and lower electrical connection wiring card 11 under contact 7 under lower carriage 1, fusion tube, fusion tube device, between upper moving contact 5 and upper bracket 6, be provided with spring 12, contact-making surface and upper bracket 6 quadratures of described spring 12 and upper moving contact 5, make the stressed increasing of contact-making surface of moving contact and fixed contact, namely increase pressure, further reduced the caloric value of fuse contact.
Described upper moving contact 5 tops are circular-arc, realize that its circular arc with upper static contact 9 contacts, and have realized the larger area contact, make the contact caloric value reduce, and have reduced the fusing frequency.
Claims (2)
1. 35kV fuse switch, it comprises fusion tube, insulator, upper bracket, is fixed on the upper static contact on upper bracket, the upper moving contact that is connected with fusion tube, upper electrical connection wiring card, it also comprises contact and lower electrical connection wiring card under contact under lower carriage, fusion tube, fusion tube device, between upper moving contact and upper bracket, be provided with spring, it is characterized in that contact-making surface and the upper bracket quadrature of described spring and upper moving contact.
2. a kind of 35kV fuse switch according to claim 1, is characterized in that described upper moving contact top is circular-arc, realizes that it contacts with the circular arc of upper static contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202150748U CN203300586U (en) | 2013-04-24 | 2013-04-24 | 35 kV falling type fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202150748U CN203300586U (en) | 2013-04-24 | 2013-04-24 | 35 kV falling type fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203300586U true CN203300586U (en) | 2013-11-20 |
Family
ID=49576580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202150748U Expired - Lifetime CN203300586U (en) | 2013-04-24 | 2013-04-24 | 35 kV falling type fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203300586U (en) |
-
2013
- 2013-04-24 CN CN2013202150748U patent/CN203300586U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: STATE GRID ZHEJIANG HANGZHOU XIAOSHAN POWER SUPPLY COMPANY Effective date: 20140905 Owner name: STATE GRID ZHEJIANG HANGZHOU XIAOSHAN POWER SUPPLY Effective date: 20140905 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: STATE GRID ZHEJIANG HANGZHOU XIAOSHAN POWER SUPPLY Free format text: FORMER NAME: XIAOSHAN ELECTRIC POWER SUPPLY BUREAU |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 311203 HANGZHOU, ZHEJIANG PROVINCE TO: 100031 XICHENG, BEIJING |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang Province, 311203 Xiaoshan street Chengxiang District Xiaoshao Road, No. 1308 Patentee after: STATE GRID ZHEJIANG HANGZHOU CITY XIAOSHAN DISTRICT POWER SUPPLY Co. Address before: Hangzhou City, Zhejiang Province, 311203 Xiaoshan street Chengxiang District Xiaoshao Road, No. 1308 Patentee before: Xiaoshan Power Supply Bureau |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140905 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: STATE GRID ZHEJIANG HANGZHOU CITY XIAOSHAN DISTRICT POWER SUPPLY Co. Patentee after: HANGZHOU POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER Co. Address before: Hangzhou City, Zhejiang Province, 311203 Xiaoshan street Chengxiang District Xiaoshao Road, No. 1308 Patentee before: STATE GRID ZHEJIANG HANGZHOU CITY XIAOSHAN DISTRICT POWER SUPPLY Co. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |