CN211016898U - Contact arm sleeve suitable for 40.5kV voltage class - Google Patents
Contact arm sleeve suitable for 40.5kV voltage class Download PDFInfo
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- CN211016898U CN211016898U CN201922353511.2U CN201922353511U CN211016898U CN 211016898 U CN211016898 U CN 211016898U CN 201922353511 U CN201922353511 U CN 201922353511U CN 211016898 U CN211016898 U CN 211016898U
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- contact arm
- connecting part
- pole
- annular groove
- arm
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Abstract
The utility model relates to a touch arm sleeve suitable for 40.5kV voltage class, which comprises a sleeve body, wherein the sleeve body is provided with a touch arm connecting part and a pole connecting part, the diameter of the pole connecting part is larger than that of the touch arm connecting part, and a step is formed between the pole connecting part and the touch arm connecting part; the pole connecting part is provided with a matching part, and the pole and the contact arm are connected in the matching part; the medial surface of utmost point post connecting portion is equipped with an at least first annular groove, first annular groove is located cooperation portion and keeps away from one side of touching the arm connecting portion. The utility model discloses a block main loop voltage from two directions, external creepage phenomenon when having avoided the contact arm sleeve pipe to use has improved the insulating properties of circuit breaker effectively.
Description
Technical Field
The utility model relates to a touch the arm sleeve pipe, concretely relates to touch arm sleeve pipe that is fit for 40.5kV voltage class and uses.
Background
The contact arm group of the 40.5kV high-voltage vacuum circuit breaker on the market at present is connected with a pole by adopting two-end contact arm sleeves, and the middle part adopts a heat-shrinkable sleeve heat-shrinkable form. Although interference fit is adopted between the contact arm sleeve and the pole and between the contact arm sleeve and the contact arm, certain gaps still can appear between the contact arm sleeve and the pole and between the contact arm sleeve and the contact arm after long-term use. When the circuit breaker joins in marriage the cabinet and uses, main loop voltage is higher, takes place easily that the main loop is followed utmost point post and is touched between the arm sleeve pipe, touches the arm and touches between the arm sleeve pipe external creepage discharge, leads to circuit breaker insulating properties to reduce, does not reach the national standard requirement. Especially, in high-altitude use occasions, the 40.5kV high-voltage vacuum circuit breaker often has the problems of discharging to the cabinet body and low insulating property.
In view of the above, the present inventors have made extensive and intensive studies and experiments to solve the above problems of the contact arm casing.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims to provide a be fit for the arm sleeve pipe that touches that 40.5kV voltage class used, it can effectively avoid external creepage phenomenon.
In order to achieve the above object, the utility model adopts the following technical scheme:
a contact arm sleeve suitable for being used in 40.5kV voltage class is used for connecting a pole and a contact arm and comprises a sleeve body, wherein the sleeve body is provided with a contact arm connecting part and a pole connecting part, the diameter of the pole connecting part is larger than that of the contact arm connecting part, and a step is formed between the pole connecting part and the contact arm connecting part; the pole connecting part is provided with a matching part, and the pole and the contact arm are connected in the matching part; the medial surface of utmost point post connecting portion is equipped with an at least first annular groove, first annular groove is located cooperation portion and keeps away from one side of touching the arm connecting portion.
The medial surface of utmost point post connecting portion is equipped with second annular groove, second annular groove is located the cooperation portion and is close to one side of touching the arm connecting portion.
The outside of the pole connecting part is provided with a boss.
The boss is an annular boss.
The boss is provided with a first annular groove exterior.
The boss is also disposed outside the second annular groove.
After the scheme is adopted, the utility model discloses form a step between touching arm connecting portion and utmost point post connecting portion, simultaneously, set up first annular groove at utmost point post connecting portion medial surface, and make it be located cooperation portion and keep away from one side of touching arm connecting portion. On one hand, the utility model can block the main loop voltage through the step between the pole connecting part and the contact arm connecting part, and avoid the external creepage of the main loop voltage along the space between the contact arm and the contact arm sleeve; on the other hand, the first annular groove can be matched with the insulating shell of the pole, so that the insulating shell matched in the first annular groove blocks the voltage of the main loop, and the voltage of the main loop is prevented from creepage outwards between the pole and the contact arm sleeve. To sum up, the utility model discloses a block main loop voltage from two directions, external creepage phenomenon when having avoided the contact arm sleeve pipe to use has improved the insulating properties of circuit breaker effectively.
Drawings
Fig. 1 is a schematic structural view of the contact arm sleeve of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is the assembly schematic diagram of the contact arm sleeve, the contact arm and the pole of the utility model.
Detailed Description
Referring to fig. 1 to 3, the present invention discloses a contact arm sleeve suitable for 40.5kV voltage class, which is used for connecting a pole 200 and a contact arm 300. The contact arm sleeve comprises a sleeve body 100, wherein a contact arm connecting part 110 and a pole connecting part 120 are arranged on the sleeve body 100, the diameter of the pole connecting part 120 is larger than that of the contact arm connecting part 110, and a step 130 is formed between the pole connecting part 120 and the contact arm connecting part 110; the pole connecting portion 120 is provided with a matching portion 121, and the pole 200 and the contact arm 300 are connected in the matching portion 121; the inner side surface of the pole connecting portion 120 is provided with at least one first annular groove 122, and the first annular groove 122 is located on one side of the matching portion 121 far away from the contact arm connecting portion 110.
When the contact arm sleeve is used, the pole 200 is assembled in the pole connecting part 120 of the contact arm sleeve, the contact arm 300 is assembled in the contact arm connecting part 110, and the end part of the contact arm 300 extends into the pole connecting part 120 and is connected with the pole 200 in the matching part 121. The contact arm sleeve of the utility model, on one hand, blocks the main loop voltage through the step 130 between the pole connecting part 120 and the contact arm connecting part 110, and avoids the main loop voltage from creeping outwards along the space between the contact arm 300 and the contact arm sleeve; on the other hand, the first annular groove 122 is matched with the insulating shell of the pole 200, so that the insulating shell matched in the first annular groove 122 blocks the main loop voltage, and the main loop voltage is prevented from creepage to the outside along the space between the pole 200 and the contact arm sleeve. The utility model discloses a block main loop voltage from two directions, external creepage phenomenon when having avoided the contact arm sleeve pipe to use has improved the insulating properties of circuit breaker effectively.
On the basis, the inner side surface of the pole connecting portion 120 is provided with a second annular groove 123, and the second annular groove 123 is located on one side of the matching portion 121 close to the contact arm connecting portion 110. The second annular groove 123 can increase the blocking effect of the contact arm sleeve on the main circuit voltage, and can more effectively prevent the main circuit voltage from creepage along the space between the contact arm 300 and the contact arm sleeve. Of course, in order to enhance the blocking effect of the contact arm sleeve on the main circuit voltage, the number of the first annular grooves 122 may also be increased, so as to more effectively prevent the main circuit voltage from creeping outwards along the space between the pole 200 and the contact arm sleeve.
In addition, in order to increase the outer surface creepage distance of the contact arm bushing, a boss 124 may be provided outside the pole connecting portion 120, and the boss 124 may be an annular boss. Furthermore, the bosses 124 may be disposed outside the first annular groove 122 and the second annular groove 123, so that the injection molding of the contact arm sleeve may be facilitated, and the production efficiency of the contact arm sleeve may be improved.
To sum up, the key of the utility model lies in, the utility model discloses forming a step 130 between touching arm connecting portion 110 and utmost point post connecting portion 120, simultaneously, setting up first annular groove 122 at utmost point post connecting portion 120 medial surface, and make it be located cooperation portion 121 and keep away from one side of touching arm connecting portion 110. So that the utility model can block the main loop voltage through the step 130 between the pole connecting part 120 and the contact arm connecting part 110, and avoid the main loop voltage from creepage along the space between the contact arm 300 and the contact arm sleeve; on the other hand, the first annular groove 122 can be matched with the insulating shell of the pole 200, so that the insulating shell matched in the first annular groove 122 blocks the main loop voltage, and the main loop voltage is prevented from creepage to the outside along the space between the pole 200 and the contact arm sleeve. To sum up, the utility model discloses a block main loop voltage from two directions, external creepage phenomenon when having avoided the contact arm sleeve pipe to use has improved the insulating properties of circuit breaker effectively.
The above description is only an embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a be fit for touching arm sleeve pipe that 40.5kV voltage class used for connect utmost point post and touch the arm, its characterized in that: the contact arm sleeve comprises a sleeve body, a contact arm connecting part and a pole connecting part are arranged on the sleeve body, the diameter of the pole connecting part is larger than that of the contact arm connecting part, and a step is formed between the pole connecting part and the contact arm connecting part; the pole connecting part is provided with a matching part, and the pole and the contact arm are connected in the matching part; the medial surface of utmost point post connecting portion is equipped with an at least first annular groove, first annular groove is located cooperation portion and keeps away from one side of touching the arm connecting portion.
2. A contact arm bushing suitable for use at a voltage level of 40.5kV as claimed in claim 1, wherein: the medial surface of utmost point post connecting portion is equipped with second annular groove, second annular groove is located the cooperation portion and is close to one side of touching the arm connecting portion.
3. A contact arm bushing suitable for use at a voltage level of 40.5kV as claimed in claim 1 or 2, wherein: the outside of the pole connecting part is provided with a boss.
4. A contact arm bushing suitable for use at a voltage level of 40.5kV as claimed in claim 3, wherein: the boss is an annular boss.
5. A contact arm bushing suitable for use with a voltage rating of 40.5kV as claimed in claim 4, wherein: the boss is provided with a first annular groove exterior.
6. A contact arm bushing suitable for use with a voltage rating of 40.5kV as claimed in claim 5, wherein: the boss is also disposed outside the second annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922353511.2U CN211016898U (en) | 2019-12-24 | 2019-12-24 | Contact arm sleeve suitable for 40.5kV voltage class |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922353511.2U CN211016898U (en) | 2019-12-24 | 2019-12-24 | Contact arm sleeve suitable for 40.5kV voltage class |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211016898U true CN211016898U (en) | 2020-07-14 |
Family
ID=71479659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922353511.2U Active CN211016898U (en) | 2019-12-24 | 2019-12-24 | Contact arm sleeve suitable for 40.5kV voltage class |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211016898U (en) |
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2019
- 2019-12-24 CN CN201922353511.2U patent/CN211016898U/en active Active
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