CN212010840U - Indoor vacuum circuit breaker - Google Patents
Indoor vacuum circuit breaker Download PDFInfo
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- CN212010840U CN212010840U CN202020391098.9U CN202020391098U CN212010840U CN 212010840 U CN212010840 U CN 212010840U CN 202020391098 U CN202020391098 U CN 202020391098U CN 212010840 U CN212010840 U CN 212010840U
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- vacuum chamber
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Abstract
The utility model discloses an indoor vacuum circuit breaker, which comprises a packaging cover and a vacuum arc extinguish chamber, wherein the vacuum arc extinguish chamber comprises a ceramic shell, a vacuum chamber is arranged in the ceramic shell, the vacuum chamber is molded into a cone, and the shape of the inner surface part of the ceramic shell is the same as that of the outer surface of the molded vacuum chamber; the vacuum chamber is internally provided with a shielding cover, a fixed contact, a movable contact, a fixed end cover and a movable end cover, wherein the movable end cover is provided with a driving rod, and the driving rod is connected with an operating mechanism; the lower end of the operating mechanism is fixedly connected with a threaded rod, the outer side of the threaded rod is tightly sleeved with an insulating sleeve, an upper rubber pad and a lower rubber pad are arranged on the insulating sleeve, and a nut is tightly attached to the lower end face of the gasket. The utility model discloses an indoor vacuum circuit breaker avoids the production and the moisture infiltration of contact surface bubble effectively, environmental protection more and can prevent the electric leakage.
Description
Technical Field
The utility model relates to a vacuum circuit breaker especially relates to an indoor vacuum circuit breaker.
Background
At present, an indoor vacuum circuit breaker is generally adopted in the market of sulfur hexafluoride breakers, sulfur hexafluoride gas is generally used for insulation in the prior art, sulfur hexafluoride gas is used as an opening and closing device of an insulating medium in a box, but fluorine gas which is a main component of the sulfur hexafluoride gas has serious adverse effects on damaging an ozone layer, and is also one of gases causing global warming.
The conventional insulating case for a circuit breaker, which is manufactured separately and assembled with a molded vacuum valve, according to the conventional method, the insulating property of a contact interface is changed by the shape of an inner contact surface of the insulating case and the outer shape of a flexible insulating material molded on the outer surface of the vacuum valve, and thus the quality is unstable, and particularly when the vacuum valve is installed inside an insulating case, bubbles remain at the interface between the inner surface of the insulating case and the outer surface of the vacuum valve to form a gas port, which causes many economical problems.
Traditional circuit breaker leads to supporting seat and circuit breaker lug connection because supporting seat and circuit breaker fixed connection for supporting seat or circuit breaker electric leakage reduce equipment life. Accordingly, there is a need for improvements in the art.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides an indoor vacuum circuit breaker.
In order to solve the technical problem, the utility model discloses a technical scheme is: an indoor vacuum circuit breaker comprises an encapsulation cover and a vacuum arc-extinguishing chamber positioned in the encapsulation cover, wherein the vacuum arc-extinguishing chamber comprises a ceramic shell, a vacuum chamber is arranged in the ceramic shell, the vacuum chamber is molded into a cone shape, the shape of the inner surface part of the ceramic shell is the same as that of the outer surface of the molded vacuum chamber, and a first conductive column and a second conductive column are connected to the vacuum arc-extinguishing chamber;
the vacuum chamber is internally provided with a shielding cover, a fixed contact, a movable contact, a fixed end cover and a movable end cover, wherein the shielding cover is a cylindrical structural member and is fixed on the inner wall of the vacuum chamber through a convex ring on the cylindrical structural member;
the outer side of a threaded rod fixedly connected with the lower end of an operating mechanism is tightly sleeved with an insulating sleeve, the outer side of the upper end of the insulating sleeve is sleeved with an upper rubber pad, the lower end face of the operating mechanism is tightly pressed with the upper rubber pad, the lower end face of the upper rubber pad is tightly attached to a supporting seat, the inside of the supporting seat is tightly sleeved with the insulating sleeve through a through hole, the lower end face of the supporting seat is tightly attached to a lower rubber pad, the lower end face of the lower rubber pad is tightly attached to a gasket, and a nut is.
Furthermore, the packaging cover is integrally made of epoxy resin materials, and the epoxy resin materials and the ceramic shell have good adhesion.
Further, the inner diameter of the ceramic shell is smaller than the outer diameter of the outer surface of the vacuum chamber.
Furthermore, a conductor and a current transformer are arranged in the insulating shell of the first conducting column, and a conductor and a voltage sensor are arranged in the insulating shell of the second conducting column.
Further, the vacuum chamber is a soft vacuum chamber made of a rubber material.
Further, air or nitrogen is used in the vacuum interrupter chamber.
Further, the shield case is located at the periphery of the fixed contact and the movable contact and is kept at a fixed distance from the fixed contact and the movable contact.
Further, the upper rubber pad and the lower rubber pad are made of silica gel materials.
Further, the insulating sleeve is made of a polyethylene material.
The utility model discloses an indoor vacuum circuit breaker, the packaging cover and the vacuum arc extinguish chamber are packaged integrally, and the excellent insulating property can be kept at the contact interface between the vacuum chamber and the ceramic shell, thereby effectively avoiding the generation of contact surface bubbles and the infiltration of moisture; the product can use other insulating media such as air, nitrogen, vacuum and the like to replace sulfur hexafluoride gas as the insulating medium, and is more environment-friendly; can effectively prevent the supporting seat from electric leakage.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged cross-sectional view of the support base of the present invention;
in the figure: 1. a package cover; 2. a vacuum arc-extinguishing chamber; 3. a ceramic housing; 4. a vacuum chamber; 5. a first conductive post; 6. a second conductive post; 7. a shield case; 8. a fixed contact; 9. a movable contact; 10. fixing an end cover; 11. a movable end cap; 12. a drive rod; 13. a threaded rod; 14. an insulating sleeve; 15. a rubber pad is arranged; 16. a supporting seat; 17. a through hole; 18. a rubber pad is arranged; 19. a gasket; 20. a nut; 21. a current transformer; 22. a voltage sensor; 23. an operating mechanism.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The present embodiment comprises an indoor vacuum interrupter.
An indoor vacuum circuit breaker as shown in fig. 1 and 2, which comprises a packaging cover 1 and a vacuum interrupter 2 positioned in the packaging cover 1, wherein the vacuum interrupter 2 comprises a ceramic housing 3, a vacuum chamber 4 is arranged in the ceramic housing 3, the vacuum chamber 4 is molded to be conical, the shape of the inner surface part of the ceramic housing 3 is the same as that of the outer surface of the molded vacuum chamber 4, the packaging cover 1 is integrally made of epoxy resin material, the epoxy resin material has good adhesion with the ceramic housing 3, and the packaging cover 1 is integrally packaged with the ceramic housing 3 of the vacuum interrupter 2; the vacuum chamber 4 is a soft vacuum chamber made of rubber material, and the rubber material is composed of silicone, ethylene propylene diene monomer and polyurethane rubber material. The inner diameter of the ceramic shell 3 is smaller than the outer diameter of the outer surface of the vacuum chamber 4. The vacuum chamber 4 is conical and has an inclined angle, and the soft insulating material is used for directly mounting the external part of the vacuum chamber 4 on the hard insulating material of the ceramic shell 3 after being molded, so that when the soft insulating material is mounted on the ceramic shell 3 in the assembling process, the soft insulating material is compressed and assembled on the ceramic shell 3, the discharge of internal bubbles is facilitated, and meanwhile, the infiltration of moisture is also avoided; air or nitrogen is used in the vacuum arc extinguish chamber 2 to replace sulfur hexafluoride gas, and the utility model discloses also can use vacuum environment.
The vacuum arc-extinguishing chamber 2 is connected with a first conductive column 5 and a second conductive column 6; the first conductive column 5 has a conductor and a current transformer 21 for detecting current in an insulating housing, and the second conductive column 6 has a conductor and a voltage sensor 22 for detecting voltage in an insulating housing.
The vacuum chamber 4 is internally provided with a shielding cover 7, a fixed contact 8, a movable contact 9, a fixed end cover 10 and a movable end cover 11, the shielding cover 7 is a cylindrical structural member and is fixed on the inner wall of the vacuum chamber 4 through a protruding ring on the cylindrical structural member, the shielding cover 7 is positioned at the periphery of the fixed contact 8 and the movable contact 9 and keeps a fixed distance with the fixed contact 8 and the movable contact 9, the shielding cover 7 is separated from the fixed contact 8 and the movable contact 9 by a certain distance, so that the shielding cover is electrically isolated and has a floating voltage potential, and during the switching operation of the fixed contact 8 and the movable contact 9, the shielding cover 7 prevents metal ions released from the contacts when an electric arc occurs from being gathered inside the ceramic shell 3, thereby preventing the insulation performance of the vacuum chamber 4 from being reduced; the fixed contact 8 is arranged on the fixed end cover 10, one end of the movable contact 9 is connected with the movable end cover 11, the movable end cover 11 is provided with a driving rod 12, the driving rod 12 is connected with an operating mechanism 23, and the operating mechanism 23 is used for braking the driving rod 12.
The lower end of the operating mechanism 23 is fixedly connected with a threaded rod 13, an insulating sleeve 14 is tightly sleeved on the outer side of the threaded rod 13, the insulating sleeve 14 is made of polyethylene materials, and the polyethylene materials are stable in chemical properties and good in insulating effect.
An upper rubber pad 15 is sleeved on the outer side of the upper end of the insulating sleeve 14, the upper rubber pad 15 is tightly pressed on the lower end face of the operating mechanism 23, a supporting seat 16 is tightly attached to the lower end face of the upper rubber pad 15, the insulating sleeve 14 is tightly sleeved inside the supporting seat 16 through a through hole 17, a lower rubber pad 18 is tightly attached to the lower end face of the supporting seat 16, and the upper rubber pad 15 and the lower rubber pad 18 are made of silica gel materials. The lower end surface of the lower rubber pad 18 is tightly attached with a gasket 19, and the lower end surface of the gasket 19 is tightly attached with a nut 20.
Insulating sleeve 14 is cup jointed in the outside fastening of threaded rod 13 during the installation, insulating sleeve 14 is made by the polyethylene material, good insulating properties has, can prevent that threaded rod 13 from contacting with supporting seat 16 and producing the circular telegram electric leakage, through turning round tight nut 20 clockwise during the equipment, the lower terminal surface that drives operating device 23 compresses tightly last rubber pad 15 and hugs closely supporting seat 16 up end, it compresses tightly lower rubber pad 18 and hugs closely supporting seat 16 lower terminal surface to drive gasket 19, it has insulating properties to go up rubber pad 15 and lower rubber pad 18, thereby prevent supporting seat 16 circular telegram electric leakage.
The utility model discloses an indoor vacuum circuit breaker, the packaging cover and the vacuum arc extinguish chamber are packaged integrally, and the excellent insulating property can be kept at the contact interface between the vacuum chamber and the ceramic shell, thereby effectively avoiding the generation of contact surface bubbles and the infiltration of moisture; the product can use other insulating media such as air, nitrogen, vacuum and the like to replace sulfur hexafluoride gas as the insulating medium, and is more environment-friendly; can effectively prevent the supporting seat from electric leakage.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.
Claims (9)
1. An indoor vacuum circuit breaker, characterized by: the vacuum arc-extinguishing chamber comprises a packaging cover (1) and a vacuum arc-extinguishing chamber (2) positioned in the packaging cover (1), wherein the vacuum arc-extinguishing chamber (2) comprises a ceramic shell (3), a vacuum chamber (4) is arranged in the ceramic shell (3), the vacuum chamber (4) is molded into a cone shape, the shape of the inner surface part of the ceramic shell (3) is the same as that of the outer surface of the molded vacuum chamber (4), and a first conductive column (5) and a second conductive column (6) are connected to the vacuum arc-extinguishing chamber (2);
the vacuum chamber (4) is internally provided with a shielding cover (7), a fixed contact (8), a movable contact (9), a fixed end cover (10) and a movable end cover (11), the shielding cover (7) is a cylindrical structural member and is fixed on the inner wall of the vacuum chamber (4) through a convex ring on the shielding cover, the fixed contact (8) is arranged on the fixed end cover (10), one end of the movable contact (9) is connected with the movable end cover (11), the movable end cover (11) is provided with a driving rod (12), and the driving rod (12) is connected with an operating mechanism (23);
the lower extreme fixedly connected with threaded rod (13) of operating device (23), insulating sleeve (14) have been cup jointed in the outside fastening of threaded rod (13), last rubber pad (15) have been cup jointed in the upper end outside of insulating sleeve (14), operating device's (23) lower terminal surface compresses tightly has last rubber pad (15), the lower terminal surface of going up rubber pad (15) is hugged closely has supporting seat (16), insulating sleeve (14) have been cup jointed in the inside of supporting seat (16) through-hole (17) fastening, the lower terminal surface of supporting seat (16) is hugged closely has lower rubber pad (18), the lower terminal surface of lower rubber pad (18) is hugged closely has gasket (19), the lower terminal surface of gasket (19) is hugged closely has nut (20).
2. Indoor vacuum interrupter according to claim 1, characterized in that: the packaging cover (1) is integrally made of epoxy resin materials, and the epoxy resin materials and the ceramic shell (3) have good adhesion.
3. Indoor vacuum interrupter according to claim 1, characterized in that: the inner diameter of the ceramic shell (3) is smaller than the outer diameter of the outer surface of the vacuum chamber (4).
4. Indoor vacuum interrupter according to claim 1, characterized in that: the conductor and the current transformer (21) are arranged in the insulating shell of the first conductive column (5), and the conductor and the voltage sensor (22) are arranged in the insulating shell of the second conductive column (6).
5. Indoor vacuum interrupter according to claim 1, characterized in that: the vacuum chamber (4) is a soft vacuum chamber made of rubber material.
6. Indoor vacuum interrupter according to claim 5, characterized in that: air or nitrogen is used in the vacuum arc-extinguishing chamber (2).
7. Indoor vacuum interrupter according to claim 1, characterized in that: the shielding cover (7) is positioned at the periphery of the fixed contact (8) and the movable contact (9) and keeps a fixed distance from the fixed contact (8) and the movable contact (9).
8. Indoor vacuum interrupter according to claim 1, characterized in that: the upper rubber pad (15) and the lower rubber pad (18) are made of silica gel materials.
9. Indoor vacuum interrupter according to claim 1, characterized in that: the insulating sleeve (14) is made of polyethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020391098.9U CN212010840U (en) | 2020-03-25 | 2020-03-25 | Indoor vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020391098.9U CN212010840U (en) | 2020-03-25 | 2020-03-25 | Indoor vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN212010840U true CN212010840U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020391098.9U Active CN212010840U (en) | 2020-03-25 | 2020-03-25 | Indoor vacuum circuit breaker |
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| CN (1) | CN212010840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111276361A (en) * | 2020-03-25 | 2020-06-12 | 南通泰富电器制造有限公司 | Indoor vacuum circuit breaker and method |
-
2020
- 2020-03-25 CN CN202020391098.9U patent/CN212010840U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111276361A (en) * | 2020-03-25 | 2020-06-12 | 南通泰富电器制造有限公司 | Indoor vacuum circuit breaker and method |
| CN111276361B (en) * | 2020-03-25 | 2024-08-13 | 江苏东源电器集团股份有限公司 | Indoor vacuum circuit breaker and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210715 Address after: 226341 No.1 Dongyuan Avenue, Shizong Town, Tongzhou District, Nantong City, Jiangsu Province Patentee after: JIANGSU DONGYUAN ELECTRICAI GROUP Co.,Ltd. Address before: 226300 17 Zhenxing North Road, Shizong Town, Tongzhou District, Nantong City, Jiangsu Province Patentee before: NANTONG TAIFU ELECTRIC APPLIANCE MANUFACTURING Co.,Ltd. |
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| TR01 | Transfer of patent right |