CN210073707U - Insulating sheath of metal conductive arm of medium-voltage vacuum circuit breaker - Google Patents
Insulating sheath of metal conductive arm of medium-voltage vacuum circuit breaker Download PDFInfo
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- CN210073707U CN210073707U CN201920680224.XU CN201920680224U CN210073707U CN 210073707 U CN210073707 U CN 210073707U CN 201920680224 U CN201920680224 U CN 201920680224U CN 210073707 U CN210073707 U CN 210073707U
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- insulating sheath
- circuit breaker
- vacuum circuit
- conductive arm
- voltage vacuum
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Abstract
The utility model provides a medium voltage vacuum circuit breaker metal conductive arm insulating sheath, this insulating sheath install on vacuum circuit breaker metal conductive arm, including insulating sheath main part and a plurality of gim peg, the insulating sheath main part is the opening ring-type, wraps up on metal conductive arm, the opening part of insulating sheath main part adopts a plurality of gim peg to carry out fixed connection. According to the medium-voltage vacuum circuit breaker structure, the exposed conductive arm is wrapped in an insulating mode to improve the insulating performance of the circuit breaker, and the extreme event that a metal valve in a medium-voltage vacuum circuit breaker switch cabinet fails to work and a malignant short circuit accident happens can be prevented.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a medium voltage vacuum circuit breaker's electrical insulation's technical field, especially a medium voltage vacuum circuit breaker metal conducting arm insulating sheath.
[ background of the invention ]
The metal shutter of the switchgear is used in conjunction with the vacuum circuit breaker, and the five-prevention mechanism shields the contacts after the vacuum circuit breaker exits the switchgear, and has two switchable devices, one of which allows the coupling of the removable part to the fixed contacts, and the other of which is a part of the enclosure or partition that shields the fixed contacts. The shutter may be metallic or non-metallic. If the metal material is grounded, the metal material is PM grade; if all or part of the insulating material is made of insulating material, the PI grade is obtained.
When the shutter is made of metal and the conductive arm of the vacuum circuit breaker is of an exposed structure, there is theoretically a possibility of causing a three-phase short circuit of the vacuum circuit breaker once the metal shutter mechanism fails. The metal valve mechanism as a special part in the vacuum circuit breaker has certain internal association with the switch cabinet and the vacuum circuit breaker, and the cooperation of the metal valve mechanism and the switch cabinet and the vacuum circuit breaker determines the electrical performance of the vacuum circuit breaker and the safety performance of the vacuum circuit breaker. In the process of pushing the vacuum circuit breaker into the switch cabinet, once the valve is not opened in place due to too slow opening, left-right or up-down deflection, poor matching with the vacuum circuit breaker, part deformation and the like, the metal conductive arm of the vacuum circuit breaker is possibly discharged due to insufficient insulation distance to the metal valve, so that accidents are caused. An insulating sheath for a metal conducting arm of a medium voltage vacuum circuit breaker is proposed.
[ Utility model ] content
The utility model aims at solving the problem among the prior art, provide a middling pressure vacuum circuit breaker metal conductive arm insulating sheath, carry out insulating parcel in order to promote the insulating properties of circuit breaker according to middling pressure vacuum circuit breaker structure to its naked conductive arm, the extreme incident that metal valve became invalid and lead to taking place malignant short circuit accident in the preventable middling pressure vacuum circuit breaker cubical switchboard.
In order to achieve the above object, the utility model provides a medium voltage vacuum circuit breaker metal conductive arm insulating sheath, this insulating sheath install on vacuum circuit breaker metal conductive arm, including insulating sheath main part and a plurality of gim peg, the insulating sheath main part is the opening ring-type, wraps up on metal conductive arm, the opening part of insulating sheath main part adopts a plurality of gim peg to carry out fixed connection.
Preferably, the inner wall of the insulating sheath body is provided with a semi-conducting layer, so that the inner wall and the conducting arm are at the same potential.
Preferably, the semiconductive layer is coated with a GRAPHITE lacquer of GRAPHITE 33 type, manufactured by KONTAKT, Germany.
Preferably, the insulating sheath main body is formed by injection molding of polyolefin materials.
Preferably, the insulating sheath main body is provided with a plurality of buckling holes for installing fixing bolts, and the buckling holes are formed in the opening of the insulating sheath main body.
Preferably, the opening of the insulating sheath main body is provided with a plurality of flanges extending outwards, each flange comprises an upper edge and a lower edge, the upper edge is located at one end of the opening, the lower edge is located at the other end of the opening, the upper edge is in one-to-one correspondence with the lower edge, the upper edge is provided with a plurality of upper buckling holes distributed at intervals in the length direction of the upper edge, the lower edge is provided with a plurality of lower buckling holes distributed at intervals in the length direction of the lower edge, the upper buckling holes are in one-to-one correspondence with the lower buckling holes, and the fixing bolts are installed on the upper buckling holes and the lower buckling holes in one-to-one correspondence and used for connecting the insulating sheath main body and.
Preferably, the inner cavity of the insulating sheath main body is adapted to the shape of the exposed part of the metal conductive arm of the vacuum circuit breaker, and the fixing bolt is an insulating fixing bolt.
The utility model has the advantages that: the utility model discloses an insulating sheath installs the back additional, has improved the dielectric strength of vacuum circuit breaker body, has constituted the outer insulation of vacuum circuit breaker electrically conductive arm, effectively prevents the electrical accident that overlap joint short circuit and arc discharge cause that the foreign matter gets into or the metal valve inefficacy leads to, has eliminated electrical safety hidden danger.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a front view of an insulating sheath of a metal conductive arm of a medium voltage vacuum circuit breaker according to the present invention;
fig. 2 is a top view of the insulating sheath of the metal conductive arm of the medium voltage vacuum circuit breaker of the present invention;
fig. 3 is a left side view of the metal conductive arm insulating sheath of the medium voltage vacuum circuit breaker of the present invention.
[ detailed description ] embodiments
Referring to fig. 1 to 3 the utility model relates to a medium voltage vacuum circuit breaker metal conductive arm insulating sheath, this insulating sheath install on vacuum circuit breaker metal conductive arm, including insulating sheath main part 1 and a plurality of gim peg 2, insulating sheath main part 1 is the opening ring-type, wraps up on metal conductive arm, the opening part of insulating sheath main part 1 adopts a plurality of gim peg 2 to carry out fixed connection, the inner chamber of insulating sheath main part 1 suits with the appearance at the exposed position of vacuum circuit breaker metal conductive arm, gim peg 2 is insulating gim peg.
Further, the inner wall of the insulating sheath body 1 is provided with a semi-conducting layer, so that the inner wall and the conducting arm are at the same potential to shield the influence of the internal air gap, thereby enabling the position of the maximum electric field intensity to be transferred to the outer surface of the insulating sheath. The coating of the semi-conducting layer adopts GRAPHITE 33 type GRAPHITE spray paint produced by German KONTAKT company, and the paint is atomized and uniformly sprayed on the surface of the inner layer of the insulating sheath, so that the coating uniformity of the semi-conducting layer is ensured.
Furthermore, the insulating sheath main body 1 is formed by injection molding of polyolefin materials, has excellent electrical and tracking resistance, excellent weather resistance, high mechanical properties, hydrophobicity, hydrophobic migration and other characteristics, has extremely excellent high and low temperature resistance, and can be continuously used under the conditions of-50 ℃ to +150 ℃.
After the insulating sheath is installed, in order to verify the internal and external electrical performance of the conducting arm after the insulating sheath is installed, the voltage can be increased to the power frequency rated voltage through the experimental transformer, and meanwhile, an ultraviolet imager is adopted to observe whether corona discharge exists on the internal and external surfaces of the conducting arm of the equipment in the air breakdown process.
Further, be equipped with the knot hole that a plurality of is used for installing gim peg 2 on the insulating sheath main part 1, detain the hole setting at the opening part of insulating sheath main part 1, the convenient circuit breaker's of being convenient for daily maintenance of dismantling is overhauld, satisfies used repeatedly's purpose simultaneously, and the fortune dimension is with low costs.
Furthermore, the opening part of the insulating sheath main body 1 is provided with a plurality of flanges extending outwards, the flanges comprise an upper edge 11 positioned at one end of the opening part and a lower edge 12 positioned at the other end of the opening part, the upper edge 11 and the lower edge 12 are in one-to-one correspondence, the upper edge 11 is provided with a plurality of upper buckling holes distributed at intervals in the length direction, the lower edge 12 is provided with a plurality of lower buckling holes distributed at intervals in the length direction, the upper buckling holes and the lower buckling holes are in one-to-one correspondence, and the fixing bolts 2 are installed on the upper buckling holes and the lower buckling holes in the one-to-one correspondence and used for connecting the insulating sheath main body 1 and enabling the insulating sheath main body to be tightly wrapped on the metal conductive.
The utility model discloses the working process:
the utility model relates to a medium voltage vacuum circuit breaker metal conductive arm insulating sheath, according to the design of vacuum circuit breaker metal conductive arm appearance, is formed by the injection molding of macromolecular material polyolefin, and polyolefin has thermal stability, fire resistance, compliance, non-cracking and resistant trace performance and stronger flexibility, can hug closely on metal conductive arm; the improved insulation strength of the installed insulation soft sheath meets the requirements of corresponding standards, and the insulation soft sheath is wrapped on a conductive arm of a medium-voltage vacuum circuit breaker body and fixed by an insulation fixing bolt. On the basis of not changing the cabinet type structure of the original circuit breaker switch cabinet, the exposed metal conductive arm of the existing circuit breaker is transformed into the conductive arm externally wrapped with the insulating soft sheath, and even if the metal valve fails to fall on the conductive arm of the vacuum circuit breaker under extreme conditions, the three-phase insulating property of the metal conductive arm can be ensured by the insulating sheath with the standard insulating strength, so that the possibility of short-circuit accidents is thoroughly eliminated.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (5)
1. The utility model provides a medium voltage vacuum circuit breaker metal conductive arm insulating sheath, this insulating sheath installs on vacuum circuit breaker metal conductive arm, its characterized in that: including insulating sheath main part (1) and a plurality of gim peg (2), insulating sheath main part (1) is that the opening is cyclic annular, wraps up on the metal conducting arm, the opening part of insulating sheath main part (1) adopts a plurality of gim peg (2) to carry out fixed connection.
2. A medium voltage vacuum circuit breaker metallic conductive arm insulating sheath according to claim 1, characterized in that: and a semi-conducting layer is arranged on the inner wall of the insulating sheath body (1) to enable the inner wall and the conducting arm to be at the same potential.
3. A medium voltage vacuum circuit breaker metallic conductive arm insulating sheath according to claim 1, characterized in that: the insulating sheath body (1) is provided with a plurality of buckling holes for installing the fixing bolts (2), and the buckling holes are formed in the opening of the insulating sheath body (1).
4. A medium voltage vacuum circuit breaker metallic conductive arm insulating sheath according to claim 1, characterized in that: the opening part of insulating sheath main part (1) is equipped with a plurality of flanges of outside extension, the flange is including last border (11) that are located opening part one end and lower border (12) that are located the opening part other end, go up border (11) and lower border (12) one-to-one, it detains the hole on a plurality of according to its length direction interval distribution to go up border (11), border (12) are equipped with a plurality of lower knot holes according to its length direction interval distribution down, go up and detain hole one-to-one down, gim peg (2) are installed on detaining the hole on the one-to-one and detaining the hole down for connect insulating sheath main part (1), make it tightly wrap up on metal conducting arm.
5. A medium voltage vacuum circuit breaker metallic conducting arm insulating sheath according to any one of claims 1 to 4, characterized in that: the inner cavity of the insulating sheath main body (1) is matched with the appearance of the exposed part of the metal conductive arm of the vacuum circuit breaker, and the fixing bolt (2) is an insulating fixing bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680224.XU CN210073707U (en) | 2019-05-14 | 2019-05-14 | Insulating sheath of metal conductive arm of medium-voltage vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920680224.XU CN210073707U (en) | 2019-05-14 | 2019-05-14 | Insulating sheath of metal conductive arm of medium-voltage vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN210073707U true CN210073707U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920680224.XU Active CN210073707U (en) | 2019-05-14 | 2019-05-14 | Insulating sheath of metal conductive arm of medium-voltage vacuum circuit breaker |
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| CN (1) | CN210073707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033983A (en) * | 2019-05-14 | 2019-07-19 | 仪凤机电（嘉兴）检测技术服务有限公司 | Vacuum circuit breaker metallic conduction arm insulating sheath is pressed in one kind |
-
2019
- 2019-05-14 CN CN201920680224.XU patent/CN210073707U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033983A (en) * | 2019-05-14 | 2019-07-19 | 仪凤机电（嘉兴）检测技术服务有限公司 | Vacuum circuit breaker metallic conduction arm insulating sheath is pressed in one kind |
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