CN203193275U - Shielding arc-extinguishing device - Google Patents
Shielding arc-extinguishing device Download PDFInfo
- Publication number
- CN203193275U CN203193275U CN 201320218781 CN201320218781U CN203193275U CN 203193275 U CN203193275 U CN 203193275U CN 201320218781 CN201320218781 CN 201320218781 CN 201320218781 U CN201320218781 U CN 201320218781U CN 203193275 U CN203193275 U CN 203193275U
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- CN
- China
- Prior art keywords
- insulation cover
- bus
- shielding
- ring
- insulating cover
- 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 - Fee Related
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Abstract
The utility model relates to a shielding arc-extinguishing device composed of a shielding insulation cover and an insulation cover cap. Channels used for receiving a bus are respectively arranged on the shielding insulation cover and the insulation cover cap. An accommodation chamber is formed in the inside when the two are sleeved. An equalizing ring is arranged in the wall of the insulation cover. The equalizing ring is distributed around the accommodation chamber. A lead wire extending towards the accommodation chamber is connected on the body of the equalizing ring. A connection ring which can be subjected to electrical connection with a bus lap joint position is provided at a free end of the lead wire. The edge of the equalizing ring has an arc-shaped swollen structure. With the improvement of the utility model, the shielding insulation cover and the insulation cover cap are under an equipotential state, such that positive influences are provided for preventing point discharge at the bus lap joint position, retarding insulation material aging, and eliminating bolt-to-ground or inter-phase arcing phenomena under abnormal situations. Therefore, safety of the entire circuit and system can be ensured.
Description
[technical field]
The utility model belongs to a kind of electric equipment auxiliary protection device, relate in particular to a kind of indoors, be located at the shielding arc-control device of bus lap-joint in the outdoor high-voltage electric line.
[background technology]
At present, indoors, outdoor bus lap-joint all is provided with bus cover box usually, the thermal shrinkable sleeve of sealing with the bus surface matches, and lap-joint wraps up with bus, plays insulating effect.Facts have proved, there are the following problems in application for this bus cover box: be subjected to affected by high, there is point discharge phenomenon in the bolt that plays the role of fastening in the bus overlap joint, thereby has accelerated the ageing of insulation of insulating case box, have a strong impact on the useful life of bus cover box, having bigger potential safety hazard.If run into improper overvoltage situations such as thunderbolt, bus cover box is punctured because of ageing of insulation, cause bolt over the ground or alternate arcing, thereby jeopardize whole circuit and system safety.The structure of this bus cover box is made of an insulation cover cap that can be arranged on the insulating cover of bus lap-joint periphery and be nested with on described insulating cover with the close-fitting formula, cover the passage that is respectively equipped with the admittance bus at described insulating cover and insulating cover, bus lap-joint is positioned at insulating cover and the formed containing cavity of insulation cover cap.
[summary of the invention]
For solving the problems referred to above that prior art exists, the utility model aims to provide a kind of shielding arc-control device, rely on this device effectively to prevent point discharge, to delay insulating material aging, eliminate bus lap-joint because of generation arcing phenomenon under the unusual condition, and then guarantee the safety of whole circuit and system.
For achieving the above object, the utility model has adopted following technical scheme: this shielding arc-control device reaches the insulation cover cap that is nested with on described insulating cover with the close-fitting formula by an insulating cover and constitutes; Cover the passage that is respectively equipped with the admittance bus at described insulating cover and insulating cover, form a containing cavity in both inside behind described insulating cover and the insulation cover cap fit, it is characterized in that: be provided with a grading ring of being made by metal material in the wall of described insulating cover, this grading ring distributes around described containing cavity; Connecting a lead-in wire that extends to described containing cavity on one's body at the ring of described grading ring, having one at the free end of this lead-in wire can realize the coupling ring that be electrically connected with bus lap-joint; The edge of described grading ring ring body is the circular-arc structure of expanding.
During as preferred concrete enforcement, described grading ring lead-in wire is connected and fixed with a inserts on the described shielding insulation cover internal face.
During as preferred concrete enforcement, the side of described shielding insulation cover and insulation cover cap is provided with the passage of admitting bus.
During as preferred concrete enforcement, have hasp on the outer wall of described insulating cover, the mouth of described insulation cover cap is along having the clasp that is complementary with described hasp.
Beneficial effect: compared with prior art, the utility model is by setting up grading ring in the insulating cover wall, and make this around whole containing cavity distribute, through the lead-in wire will encircle the technical scheme that is electrically connected with bus lap-joint after, make described insulating cover become the insulating cover with function of shielding, and this shielding insulation cover and bus are under the equipotential state, effectively prevented bus lap-joint point discharge, to delay insulating material aging, eliminate bolt over the ground or alternate arcing phenomenon under unusual condition, be conducive to guarantee the safety of whole circuit and system.Grading ring ring edge at one's side is the circular-arc structure of expanding, and facts have proved that in use this structure has good especially effect, has solved grading ring self and has easily produced the problem of point discharge.Moreover, cover tightly at shielding insulation cover and insulating cover and to join on the connection basis, increase hasp and clasp draw bail, then be conducive to prevent from producing phenomenon loosening even that come off between the two.
For deepening understanding of the present utility model, be described in further detail by embodiment below in conjunction with accompanying drawing.
[description of drawings]
Fig. 1 is vertical sectional structure schematic diagram of an embodiment of the utility model.
Fig. 2 is the structure for amplifying schematic diagram of A portion among Fig. 1.
Fig. 3 is perspective view embodiment illustrated in fig. 1.
Fig. 4 is the assembly structure schematic diagram of Fig. 3.
Fig. 5 is the perspective view of another embodiment.
Fig. 6 is the assembly structure schematic diagram of Fig. 5.
Fig. 7 is the perspective view of another embodiment.
Fig. 8 is the assembly structure schematic diagram of Fig. 7.
Among the figure: shielding insulation cover 1, hasp 11, grading ring 12, edge 121, fixedly inserts 13, lead-in wire 131, bus mouth 14, insulation cover cap 2, bus mouth 21, clasp 22, containing cavity 3, bus bar side be to import 4.
[embodiment]
Referring to Fig. 1.This shields arc-control device, and shielding insulation cover 1 and insulation cover cap 2 two parts of being made by insulating material constitute, and both are connected and fixed by hasp 11 and clasp 22 couplings of both sides on the basis of close-fitting formula socket.Be respectively equipped with the passage of admitting bus at shielding insulation cover 1 and insulation cover cap 2, two need the bus of overlap joint to introduce through bus mouth 14 and 21 respectively.Behind described shielding insulation cover 1 and insulation cover cap 2 fits, containing cavity 3 of inner formation, bus lap-joint is positioned at this containing cavity 3.Be provided with the grading ring 12 that a metal material is made in the wall of insulating cover 1, this grading ring 12 distributes around described containing cavity 3.Draw a lead-in wire 131 on one's body from the ring of grading ring 12,131 1 ends that go between are fixed on one and are located on the inserts 13 of containing cavity 3 inwalls, and the free end of the lead-in wire 131 that extends to containing cavity has one can realize the coupling ring that be electrically connected with bus lap-joint.In conjunction with Fig. 2.The edge of this grading ring 12 ring body both sides is the circular-arc structure of expanding, and this is conducive to eliminate grading ring 12 self point discharge phenomenon.
Referring to Fig. 3-Fig. 8.Look bus lap-joint structure difference, the structure of shielding insulation cover 1 and insulation cover cap 2 can make corresponding changes, that is: according to the needs of admitting bus, can be made into " one " font, " L " font and " T " font structure respectively with the channel path of shielding insulation cover 1 and insulation cover cap 2.What Fig. 3-Fig. 4 represented is " one " font channel path structure, and what Fig. 5-Fig. 6 represented is " T " font channel path structure, and Fig. 7-Fig. 8 then represents " L " font channel path structure.But no matter how the channel path structure changes, and grading ring 12 is set in the wall of shielding insulation cover 1, and therefore this grading ring 12 can not change around structures such as containing cavity 3 distributions.
Above-described embodiment only is used for explanation mentality of designing of the present utility model, and should not be considered as structure qualification of the present utility model, and is any under the utility model mentality of designing inspires and the distressed structure of making all should be subjected to the protection of this patent.
Claims (4)
1. a shielding arc-control device reaches the insulation cover cap that is nested with on described insulating cover with the close-fitting formula by an insulating cover and constitutes; Be respectively equipped with the passage of admitting bus at described insulating cover (1) and insulation cover cap (2), form a containing cavity (3) in both inside behind described insulating cover (1) and insulation cover cap (2) fit, it is characterized in that: be provided with a grading ring of being made by metal material (12) in the wall of described insulating cover (1), this grading ring (12) distributes around described containing cavity (3); Connecting a lead-in wire (131) that extends to described containing cavity (3) on one's body at the ring of described grading ring (12), having one at the free end of this lead-in wire (131) can realize the coupling ring that be electrically connected with bus lap-joint; The edge (121) of described grading ring (12) ring body is the circular-arc structure of expanding.
2. shielding arc-control device as claimed in claim 1 is characterized in that: the lead-in wire (131) of described grading ring (12) is connected and fixed with a inserts (13) on described insulating cover (1) internal face.
3. shielding arc-control device as claimed in claim 1 is characterized in that: the side of described insulating cover (1) and insulation cover cap (2) is provided with the passage (4) of admitting bus.
4. as claim 1 or 2 or 3 described shielding arc-control devices, it is characterized in that: have hasp (11) on the outer wall of described insulating cover (1), the mouth of described insulation cover cap (2) is along having the clasp (22) that is complementary with described hasp (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320218781 CN203193275U (en) | 2013-04-26 | 2013-04-26 | Shielding arc-extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320218781 CN203193275U (en) | 2013-04-26 | 2013-04-26 | Shielding arc-extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203193275U true CN203193275U (en) | 2013-09-11 |
Family
ID=49110105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320218781 Expired - Fee Related CN203193275U (en) | 2013-04-26 | 2013-04-26 | Shielding arc-extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203193275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269066A (en) * | 2013-04-26 | 2013-08-28 | 浙江省开化七一电力器材有限责任公司 | Shielding arc extinction device |
-
2013
- 2013-04-26 CN CN 201320218781 patent/CN203193275U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269066A (en) * | 2013-04-26 | 2013-08-28 | 浙江省开化七一电力器材有限责任公司 | Shielding arc extinction device |
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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: 20130911 |