CN201877387U - Fuse - Google Patents
Fuse Download PDFInfo
- Publication number
- CN201877387U CN201877387U CN2010206606262U CN201020660626U CN201877387U CN 201877387 U CN201877387 U CN 201877387U CN 2010206606262 U CN2010206606262 U CN 2010206606262U CN 201020660626 U CN201020660626 U CN 201020660626U CN 201877387 U CN201877387 U CN 201877387U
- Authority
- CN
- China
- Prior art keywords
- fusion tube
- fuse
- umbrella
- moving contact
- clamp head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000004927 fusion Effects 0.000 claims abstract description 24
- 239000012212 insulator Substances 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 description 7
- 238000010891 electric arc Methods 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Fuses (AREA)
Abstract
The utility model discloses a fuse, comprising a fusion tube. The fusion tube is internally provided with fuse wires; the lower end of the fusion tube is completely closed, and the upper end of the fusion tube is provided with an elastic clamp head on which an umbrella-shaped moving contact is sheathed; the cross section of the elastic clamp head is trapezoidal; the shape of the inner side surface at the bottom of the umbrella-shaped moving contact is matched with the shape of the elastic clamp head; and the umbrella-shaped moving contact is connected with an insulator. Compared with the prior art, in the fuse, the cross section of the elastic clamp head is trapezoidal and has a wide upper part and a narrow lower part, the shape of the inner side of the umbrella-shaped moving contact is matched with the shape of the elastic clamp head, and upward thrust of free gas in the fusion tube leads the umbrella-shaped moving contact to separate from the elastic clamp head, so that the upper end of the fusion tube fails to connection so as to fall, and the security of a transformer and a circuit is ensured.
Description
Technical field
The utility model relates to the fuse in a kind of high-voltage electric power system.
Background technology
On distribution transformer high-pressure side and distribution service main, fuse is used as short-circuit protection, the overload protection of transformer and circuit, is a kind of outdoor high-voltage protection electrical equipment of indispensability.Its operation principle is in the time of line short or overload, frit in the fuse is melted generation electric arc, and at the drop-down long arc of the effect of elastic body, simultaneously the inner gas medium that produces of fusing carrier resolves into gas during high arc temperature, in the fusing carrier pipe, set up very high pressure, with free metal gas bleed pipe is outward arc extinction, thereby fusing carrier is fallen, and forms a visible isolation fracture.All shut existing fuse upper end, and gas is the outlet ejection by the fuse lower end.Existing fuse has a variety of, as application number is that the utility model patent of " 200820184679.4 " discloses " a kind of novel outdoor high-voltage drop type fuse ", this fuse can make melting welding not take place between fuse and the fusing carrier, but its complex structure, the assembling trouble.
The utility model content
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and a kind of fuse simple in structure, easy to use is provided.
The technical solution of the utility model realizes in the following manner: a kind of fuse, comprise fusion tube, be provided with fuse in the fusion tube, the fusion tube lower end is shut by capping, the fusion tube upper end is provided with elastic chuck, is arranged with the umbrella moving contact on the elastic chuck, and the cross section of elastic chuck is trapezoidal, the medial surface of umbrella moving contact bottom is the shape that cooperates with elastic chuck, and the umbrella contact links to each other with insulator.
Be hinged with connecting plate on the described umbrella moving contact, connecting plate links to each other with insulator.
Compared with prior art, the cross section of elastic chuck is trapezoidal in the utility model, and go up wide, narrow down, match with the shape of elastic chuck in the inboard of umbrella moving contact, the thrust that free gas in the fusion tube makes progress makes the umbrella moving contact break away from elastic chuck, thereby fusion tube upper end is lost connect and fall, guaranteed the safety of transformer and circuit.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of fuse, comprise fusion tube 4, be provided with fuse 2 in the fusion tube 4, fusion tube 4 lower ends are shut by capping 1, and fusion tube 4 upper ends are provided with elastic chuck 6, be arranged with umbrella moving contact 7 on the elastic chuck 6, the cross section of elastic chuck 6 is trapezoidal, and the medial surface of umbrella moving contact 7 bottoms is the shapes that cooperate with elastic chuck 6, and umbrella contact 7 links to each other with insulator.
Be hinged with connecting plate 5 on the described umbrella moving contact 7, connecting plate 5 links to each other with insulator.
In the utility model, the fuse lower end is identical with the connection and the prior art of insulator, and the fuse upper end is connected on the insulator by connecting plate, and its annexation is simple, operation is easily controlled.
The utility model use is as follows: connecting plate 5 is connected on the insulator, apply certain pressure for elastic chuck 6, make elastic chuck 6 inwardly shrink a little, umbrella contact 7 is stuck on the elastic chuck 6, the lower end of fuse also is connected on the insulator, be provided with frit 3 in the middle of the fuse 2 in the fusion tube 4, in the time of fault, frit 3 quick-breaks also produce electric arc, and the pressure in the fusion tube is increased severely, and gases at high pressure are along upwards ejection of fusion tube, electric arc extinguishes rapidly, gases at high pressure make fusion tube fall elastic chuck 6 jack-up, cause tangible short circuit gap.
Claims (2)
1. fuse, comprise fusion tube (4), be provided with fuse (2) in the fusion tube (4), fusion tube (4) lower end is shut by capping (1), it is characterized in that: fusion tube (4) upper end is provided with elastic chuck (6), is arranged with umbrella moving contact (7) on the elastic chuck (6), and the cross section of elastic chuck (6) is trapezoidal, the medial surface of umbrella moving contact (7) bottom is the shape that cooperates with elastic chuck (6), and umbrella contact (7) links to each other with insulator.
2. fuse according to claim 1 is characterized in that: be hinged with connecting plate (5) on the described umbrella moving contact (7), connecting plate (5) links to each other with insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206606262U CN201877387U (en) | 2010-12-15 | 2010-12-15 | Fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206606262U CN201877387U (en) | 2010-12-15 | 2010-12-15 | Fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877387U true CN201877387U (en) | 2011-06-22 |
Family
ID=44165298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206606262U Expired - Lifetime CN201877387U (en) | 2010-12-15 | 2010-12-15 | Fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877387U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543614A (en) * | 2010-12-15 | 2012-07-04 | 河南省电力公司三门峡供电公司 | Fuse |
-
2010
- 2010-12-15 CN CN2010206606262U patent/CN201877387U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543614A (en) * | 2010-12-15 | 2012-07-04 | 河南省电力公司三门峡供电公司 | Fuse |
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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 ELECTRIC NET CROP. Free format text: FORMER OWNER: ELECTRIC POWER OF HENAN SANMENXIA ELECTRICAL SERVICE COMPANY Effective date: 20131107 Owner name: SANMENXIA POWER SUPPLY COMPANY, STATE GRID HENAN E Effective date: 20131107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 472000 SANMENXIA, HENAN PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131107 Address after: 100031 Xicheng District, Chang'an Avenue, No. 86, Patentee after: State Grid Corporation of China Patentee after: SANMENXIA POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER COMPANY Address before: West Xiaoshan Road, Sanmenxia City, Henan province 472000 Patentee before: Electric Power of Henan Sanmenxia Electrical Service Company |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110622 Effective date of abandoning: 20141231 |
|
| RGAV | Abandon patent right to avoid regrant |