CN202678190U - A pot-type high-voltage vacuum circuit breaker with compound insulation structure - Google Patents
A pot-type high-voltage vacuum circuit breaker with compound insulation structure Download PDFInfo
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- CN202678190U CN202678190U CN 201220218661 CN201220218661U CN202678190U CN 202678190 U CN202678190 U CN 202678190U CN 201220218661 CN201220218661 CN 201220218661 CN 201220218661 U CN201220218661 U CN 201220218661U CN 202678190 U CN202678190 U CN 202678190U
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- insulating cylinder
- circuit breaker
- pot
- nitrogen
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Abstract
Provided is a pot-type high-voltage vacuum circuit breaker with compound insulation structure which resolves problems that a conventional pot-type high-voltage vacuum circuit breaker is just applicable to a certain voltage class and production cost of a pot body is increased because the size of the pot body is required to be enlarged or air pressure filled in a high-pressure isolating room is required to be increased when the voltage class is raised. The pot-type high-voltage vacuum circuit breaker with compound insulation structure is characterized in that a low-pressure air isolating room is filled with dry air or nitrogen with gage pressure of 0 to 0.1 MPa while a high-pressure air isolating room is filled with dry air or nitrogen with gage pressure of 0.15 to 0.6 MPa, and that contact surface between a group and the dry air or the nitrogen is coated with a solid insulating layer, the group comprising a left shielding electrode, a right shielding electrode, a left connecting bus, and a right connecting bus. The beneficial effects are that solid insulation is applied on the basis of previous air insulation so that insulation capability is raised, that the pot-type high-voltage vacuum circuit breaker with compound insulation structure can be applied to higher voltage classes under the condition of unchanged size of the pot body and unchanged air pressure of the high-pressure isolating room, and that the size of the pot body can be correspondingly reduced under the condition of unchanged voltage class so as to reduce production cost.
Description
Technical field
The utility model belongs to high voltage electrical apparatus technical field, a kind of tank type high-pressure vacuum circuit breaker with composite insulation structure of particularly using in high-voltage system.
Background technology
Existing primary cut-out product adopts sulphur hexafluoride to cut-off medium as electric insulation and circuit more, and a large amount of uses of sulphur hexafluoride can produce pollution to environment.For these reasons, the circuit that cut-offs that adopts vacuum to cut-off technology has obtained application in the high voltage field gradually.In the prior art, application number a kind of outdoor high-voltage vacuum breaker that has been 03133431.8 Patent Application Publication, it does not use sulfur hexafluoride gas to do insulation gas, but the technical scheme that it is taked is to be filled with a kind of fluid silicone rubber dielectric in the arc control device outside, forms solid-state silicon rubber insulation body after the cooling, this silicon rubber insulation body is enclosed in admittedly with arc control device, complex manufacturing technology especially when arc control device break down, can't be changed separately arc control device.A kind of high-pressure vacuum breaker that Nippon AE Pava Co., Ltd. produces, it does not use sulfur hexafluoride gas to do insulation gas yet, but, the technical scheme that it is taked is that vacuum interrupter is directly installed in the insulating gas of high pressure, vacuum interrupter directly is in the high-pressure gas, therefore, the vacuum interrupter pressure-bearing is very high, has so just increased the manufacture difficulty of vacuum interrupter.In order to address the above problem, the application number that the applicant proposes a kind of tank type high-pressure vacuum circuit breaker that has been 201110327141.0 Patent Application Publication, the technical scheme that adopts comprises vacuum interrupter, tank body and pressure relief device, large insulating cylinder in the exterior useful epoxy resin making of vacuum interrupter, large two ends, the insulating cylinder left and right sides are separately installed with left bucking electrode and right bucking electrode, the left end of left bucking electrode is installed little insulating cylinder, cavity between vacuum interrupter and the large insulating cylinder and little insulating cylinder are connected with cavity between the operation insulating bar and form the low-pressure gas compartment that seals, outside large insulating cylinder and little insulating cylinder, tank body is installed, cavity between large insulating cylinder and little insulating cylinder and the tank body forms the gases at high pressure compartment of sealing, is connected with respectively left connection bus and right connection bus at left bucking electrode and right bucking electrode outer upper end.Be filled with dry air or nitrogen that gauge pressure is 0～0.1MPa in the low-pressure gas compartment, being filled with gauge pressure in the gases at high pressure compartment is 0.15～0.6MPa dry air or nitrogen.Said structure is owing to be installed in vacuum interrupter and operation insulating bar in the low pressure gas compartment of sealing; vacuum interrupter is operated in the gas of dry air that gauge pressure is 0～0.1MPa or the such low-pressure of nitrogen; thereby vacuum interrupter and bellows have effectively been protected; being filled with gauge pressure in the high-pressure gas compartment is 0.15～0.6MPa dry air or nitrogen; and hyperbar has guaranteed the insulation property of circuit breaker; so just not needing to re-use sulfur hexafluoride gas does insulation gas; also reduced simultaneously the manufacture difficulty of vacuum interrupter; if vacuum interrupter breaks down; only need to change separately vacuum interrupter and get final product, whole high-pressure vacuum breaker then can normally use.Left bucking electrode and right bucking electrode then play the effect of uniform electric field and heat radiation.
But, said structure is suitable under the certain condition of electric pressure, if raising electric pressure, can about around 2 connection buss and about around 2 bucking electrodes the weak places of these insulation produce discharge, if prevent the generation of this discharge, need to increase the volume of tank body, perhaps improve the air pressure that is filled with in the high pressure compartment, if increase the volume of tank body, can increase the manufacturing cost of tank body, also increased the weight of tank body, if improve the air pressure that is filled with in the high pressure compartment, then must increase the thickness of tank body, to adapt to high air pressure, this also can increase the manufacturing cost of tank body.
Summary of the invention
Problem to be solved in the utility model is, overcome the deficiencies in the prior art part, being provided at does not need to increase the tank body volume or raising is filled with under the condition of air pressure in the hyperbar compartment, goes for more a kind of tank type high-pressure vacuum circuit breaker with composite insulation structure of voltage levels.
The technical solution adopted in the utility model comprises vacuum interrupter, large insulating cylinder in the exterior useful epoxy resin making of vacuum interrupter, two ends, the described large insulating cylinder left and right sides are separately installed with left bucking electrode and right bucking electrode, the left end of left bucking electrode is installed little insulating cylinder, cavity between vacuum interrupter and the large insulating cylinder and little insulating cylinder are connected with cavity between the operation insulating bar and form the low-pressure gas compartment that seals, outside large insulating cylinder and little insulating cylinder, tank body is installed, cavity between large insulating cylinder and little insulating cylinder and the tank body forms the gases at high pressure compartment of sealing, in the low-pressure gas compartment, be filled with dry air or nitrogen that gauge pressure is 0～0.1MPa, in the gases at high pressure compartment, be filled with dry air or nitrogen that gauge pressure is 0.15～0.6MPa, at left bucking electrode, right bucking electrode, the surface-coated solid insulating layer that left connection bus and right connection bus contact with dry air or nitrogen.
Described solid insulating layer is the thick epoxy resin of 3～5mm.
Compared with prior art, the beneficial effects of the utility model are:
(1) since about 2 bucking electrodes with about 2 surface-coated solid insulating materials that connection bus contacts with dry air or nitrogen, increased solid insulation on original gas isolated basis, realized compound inslation, improved insulating capacity, under the condition that does not change original tank body volume and hyperbar compartment air pressure, go for more voltage levels.
(2) about 2 bucking electrodes and about behind the outer surface coating solid insulating barrier of 2 connection buss, under the condition that does not change electric pressure, can correspondingly reduce the tank body volume, reduce manufacturing cost.
Description of drawings
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the A-A cutaway view of Fig. 1.
Among the figure:
1. operation insulating bar, 2. tank body,
3. left bucking electrode, 4. large insulating cylinder,
5. vacuum interrupter, 6. right bucking electrode,
7. post insulator, 8. pressure relief device,
9. right connection bus, 10. gases at high pressure compartment,
11. the low-pressure gas compartment, 12. left connection buss,
13. solid insulating layer, 14. little insulating cylinders.
Embodiment
Provide embodiment of the present utility model below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the utility model comprises vacuum interrupter 5, large insulating cylinder 4 in vacuum interrupter 5 exterior useful epoxy resin making, two ends, described large insulating cylinder 4 left and right sides are separately installed with left bucking electrode 3 and right bucking electrode 6, the left end of left bucking electrode 3 is installed little insulating cylinder 14, cavity between vacuum interrupter 5 and the large insulating cylinder 4 and little insulating cylinder 14 are connected with cavity between the operation insulating bar 1 and form the low-pressure gas compartment 11 that seals, at large insulating cylinder 4 and little insulating cylinder 14 outer installation tank bodies 2, cavity between large insulating cylinder 4 and little insulating cylinder 14 and the tank body 2 forms the gases at high pressure compartment 10 of sealing, vacuum interrupter 5 left end attended operation insulating bars 1, right-hand member is fixed on the post insulator 7, be connected with respectively left connection bus 12 and right connection bus 9 at left bucking electrode 3 and right bucking electrode 6 outer upper end, pressure relief device 8 is installed on tank body 2 right sides, in low-pressure gas compartment 11, be filled with dry air or nitrogen that gauge pressure is 0～0.1MPa, in gases at high pressure compartment 10, be filled with dry air or nitrogen that gauge pressure is 0.15～0.6MPa, at left bucking electrode 3, right bucking electrode 6, left connection bus 12, the surface-coated solid insulating layer 13 that right connection bus 9 contacts with dry air or nitrogen, described solid insulating layer 13 adopts epoxide resin material, and thickness is 3～5mm.
The utility model both had been applicable to the three-phase absolute construction, also was applicable to the three-phase combined type structure.
Claims (2)
1. tank type high-pressure vacuum circuit breaker with composite insulation structure, comprise vacuum interrupter (5), large insulating cylinder (4) in the exterior useful epoxy resin making of vacuum interrupter (5), described large insulating cylinder (4) two ends, the left and right sides are separately installed with left bucking electrode (3) and right bucking electrode (6), the left end of left bucking electrode (3) is installed little insulating cylinder (14), cavity between vacuum interrupter (5) and the large insulating cylinder (4) and little insulating cylinder (14) are connected with cavity between the operation insulating bar (1) and form the low-pressure gas compartment (11) that seals, outside large insulating cylinder (4) and little insulating cylinder (14), tank body (2) is installed, cavity between large insulating cylinder (4) and little insulating cylinder (14) and the tank body (2) forms the gases at high pressure compartment (10) of sealing, in low-pressure gas compartment (11), be filled with dry air or nitrogen that gauge pressure is 0～0.1MPa, in gases at high pressure compartment (10), be filled with dry air or nitrogen that gauge pressure is 0.15～0.6MPa, it is characterized in that, in left bucking electrode (3), right bucking electrode (6), the surface-coated solid insulating layer (13) that left connection bus (12) and right connection bus (9) contact with dry air or nitrogen.
2. described a kind of tank type high-pressure vacuum circuit breaker with composite insulation structure according to claim 1 is characterized in that described solid insulating layer (13) is the thick epoxy resin of 3～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220218661 CN202678190U (en) | 2012-05-16 | 2012-05-16 | A pot-type high-voltage vacuum circuit breaker with compound insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220218661 CN202678190U (en) | 2012-05-16 | 2012-05-16 | A pot-type high-voltage vacuum circuit breaker with compound insulation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678190U true CN202678190U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220218661 Expired - Fee Related CN202678190U (en) | 2012-05-16 | 2012-05-16 | A pot-type high-voltage vacuum circuit breaker with compound insulation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678190U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362036A (en) * | 2014-10-31 | 2015-02-18 | 平高集团有限公司 | Switching device tank, arc extinguish chamber which uses switching device tank and high voltage switching device |
| CN110183935A (en) * | 2019-06-04 | 2019-08-30 | 上海电气输配电试验中心有限公司 | New bar electrode surface coat preparation process in environmentally friendly gas |
-
2012
- 2012-05-16 CN CN 201220218661 patent/CN202678190U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362036A (en) * | 2014-10-31 | 2015-02-18 | 平高集团有限公司 | Switching device tank, arc extinguish chamber which uses switching device tank and high voltage switching device |
| CN110183935A (en) * | 2019-06-04 | 2019-08-30 | 上海电气输配电试验中心有限公司 | New bar electrode surface coat preparation process in environmentally friendly gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A pot-type high-voltage vacuum circuit breaker with compound insulation structure Effective date of registration: 20171227 Granted publication date: 20130116 Pledgee: Shengjing bank Limited by Share Ltd in Shenyang city Shenhe branch Pledgor: Shenyang HuaDe High-tech Electric Co., Ltd. Registration number: 2017210000027 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200609 Granted publication date: 20130116 Pledgee: Shengjing bank Limited by Share Ltd. in Shenyang city Shenhe branch Pledgor: SHENYANG HUADE HIGH TECHNOLOGY ELECTRIC Co.,Ltd. Registration number: 2017210000027 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20210516 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |