CN103280368A - Magnetic quenching SF6 three-position load switch - Google Patents
Magnetic quenching SF6 three-position load switch Download PDFInfo
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- CN103280368A CN103280368A CN2013102340709A CN201310234070A CN103280368A CN 103280368 A CN103280368 A CN 103280368A CN 2013102340709 A CN2013102340709 A CN 2013102340709A CN 201310234070 A CN201310234070 A CN 201310234070A CN 103280368 A CN103280368 A CN 103280368A
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- fixed contact
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Abstract
The invention discloses a magnetic quenching SF6 three-position load switch. The magnetic quenching SF6 three-position load switch comprises a main fixed contact, a moving contact and a grounding fixed contact, wherein the moving contact is provided with two contact pieces, the main fixed contact is inserted between the two contact pieces, and permanent magnets are arranged at the contact portions of the main fixed contact and the contact pieces of the moving contact. Copper tungsten alloys are arranged on the portions, opposite to the moving contact, of the main fixed contact. The main fixed contact is of an integrated structure, and the two sides of the main fixed contact are respectively provided with heat dissipation grooves. The two contact pieces of the moving contact are connected through bolts, and the outer sides of the two contact pieces are respectively provided with a spring. The inner sides of the two contact pieces are respectively provided with a limiting sleeve. The current-carrying capability and the electric arc burning erosion resisting capability of the moving contact are improved, the contact pressure is made to be convenient to adjust, assembling difficulty is reduced, separating brake speed and closing speed are improved, and arcing time is shortened.
Description
Technical field
The present invention relates to a kind of SF6 on-load switch, relate in particular to a kind of SF6 three-stations load switch of magnetic quenching.
Background technology
The SF6 on-load switch is mainly used in high pressure ring cabinet manufacturing, is widely used in the high pressure transmission and distribution networks, has used very over a long time stable performance in the 10kV electric pressure.But 24kV electric pressure performance (as meritorious load cut-off, transfer current cut-offs etc.) very big decline is arranged, may cause the forfeiture of function sometimes, make power supply quality descend, cause accident of power supply.
Causing existing product performance main reasons for decrease is the rising of the recovery voltage after cut-offfing, the primary voltage grade is 12kV, and when using the 24kV electric pressure, it is a lot of to make arc energy rise, electric arc localized burn contact is serious, and radiating condition descends, and the arcing time is elongated, make break performance significantly descend, finally cut-off failure.
SF6 on-load switch of the prior art, moving contact are single chip architecture; Main fixed contact is composite construction, and internal layer is fine copper, and skin is beryllium-bronze; Contact pressure provides by the spring steel plate in the fixed contact outside.
There is following shortcoming at least in above-mentioned prior art:
Moving contact flow conductivity and heat-sinking capability are poor, arc resistant ablation ability; Main fixed contact electric interface is more, has increased the resistance of major loop, and live stream ability is relatively poor, arc resistant ablation ability; Contact pressure is adjusted difficulty, is not easy to debugging, and spring steel plate heat treatment required precision is higher; Electric arc is easily concentrated ablation contact part, is unfavorable for repeatedly cut-offfing; Divide, closing speed is on the low side, the arcing time is longer.
Summary of the invention
The SF6 three-stations load switch that the purpose of this invention is to provide the high magnetic quenching of a kind of current capacity and arc resistant ablation ability.
The objective of the invention is to be achieved through the following technical solutions:
The SF6 three-stations load switch of magnetic quenching of the present invention, comprise main fixed contact, moving contact, ground connection fixed contact, described moving contact is provided with the biplate contact, and described main fixed contact is inserted between the biplate, and described main fixed contact is provided with permanent magnet with the position that the contact of described moving contact contacts.
As seen from the above technical solution provided by the invention, the SF6 three-stations load switch of the magnetic quenching that the embodiment of the invention provides, because moving contact is provided with the biplate contact, main fixed contact is inserted between the biplate, main fixed contact is provided with permanent magnet with the position that the contact of moving contact contacts, and has improved current capacity and the arc resistant ablation ability of moving contact.
Description of drawings
The structural representation of the SF6 three-stations load switch of the magnetic quenching that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the structural representation of moving contact in the embodiment of the invention.
Among the figure:
1, main fixed contact, 2, the ground connection fixed contact, 3, copper-tungsten, 4, moving contact, 5, transmission insulation axle, 6, permanent magnet, 7, touch spring, 8, stop collar, 9, the heat radiation groove.
Embodiment
To be described in further detail the embodiment of the invention below.
The SF6 three-stations load switch of magnetic quenching of the present invention, its preferable embodiment is:
Comprise main fixed contact, moving contact, ground connection fixed contact, described moving contact is provided with the biplate contact, and described main fixed contact is inserted between the biplate, and described main fixed contact is provided with permanent magnet with the position that the contact of described moving contact contacts.
Described main fixed contact is provided with copper-tungsten towards the position of described moving contact, and described moving contact is provided with copper-tungsten towards the position of described main fixed contact.
Described main fixed contact is overall structure, and its both sides are respectively equipped with the heat radiation groove.
Connect by bolt between two contacts of described moving contact, the outside of two contacts is respectively equipped with touch spring.
The inboard of described two contacts is provided with stop collar.
The SF6 three-stations load switch of magnetic quenching of the present invention has improved current capacity and the arc resistant ablation ability of moving contact; Reduce the electric interface of fixed contact, improved current capacity, improved the arc erosion ability; Make contact pressure be convenient to adjust, improved assembly difficulty; Electric arc is moved in contact surface, improved that the ablation contact is local to bring unfavorable situation of repeatedly cut-offfing because electric arc is easily concentrated; Improve opening velocity and closed sum velocity, shortened the arcing time.
Specific embodiment, as shown in Figure 1 and Figure 2:
Moving contact is the biplate structure, and touch spring is loaded on the moving contact outside;
Change main fixed contact into overall structure, and increase area of dissipation;
At the position of dynamic/static contact arc erosion soldering copper tungsten alloy;
On main fixed contact, near the position of dynamic/static contact contact the cuboid permanent magnet is installed;
The rigidity of the energy accumulation spring of spring mechanism is improved, in order to promote divide-shut brake speed;
The beneficial effect that technical solution of the present invention is brought:
Can promote the electric current break performance of product, make cut-off more reliable and stable; This on-load switch moving contact is the biplate structure, has increased live stream ability and area of dissipation; Touch spring is loaded on the moving contact outside, has made things convenient for the adjustment of contact pressure, is of value to the adjustment of product major loop resistance; Main fixed contact changes overall structure into, has reduced electric interface, and major loop is descended, and increases groove on its surface, to increase area of dissipation; At the position of dynamic/static contact arc erosion soldering copper tungsten alloy; To improve arc resisting ablation ability, for more this time cut-offfing lays the foundation; On main fixed contact, near the position of dynamic/static contact contact cuboid high-quality permanent magnet is installed, this permanent magnet magnetic energy product and remanent magnetism parameter height, rely on this magnetic field that electric arc is moved in contact surface, and under the blowing of SF6 gas, make electric arc extinguish rapidly, improve arc extinguishing speed, reduce electric arc to the ablation infringement of contact, improve the electric current open and close times; The rigidity of the energy accumulation spring of spring mechanism is improved, in order to promote divide-shut brake speed, shorten the arcing time, reduce the ablation infringement of electric arc to lifting one's head.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (5)
1. the SF6 three-stations load switch of a magnetic quenching, comprise main fixed contact, moving contact, ground connection fixed contact, it is characterized in that, described moving contact is provided with the biplate contact, described main fixed contact is inserted between the biplate, and described main fixed contact is provided with permanent magnet with the position that the contact of described moving contact contacts.
2. the SF6 three-stations load switch of magnetic quenching according to claim 1 is characterized in that, described main fixed contact is provided with copper-tungsten towards the position of described moving contact, and described moving contact is provided with copper-tungsten towards the position of described main fixed contact.
3. the SF6 three-stations load switch of magnetic quenching according to claim 2 is characterized in that, described main fixed contact is overall structure, and its both sides are respectively equipped with the heat radiation groove.
4. according to the SF6 three-stations load switch of claim 1,2 or 3 described magnetic quenchings, it is characterized in that connect by bolt between two contacts of described moving contact, the outside of two contacts is respectively equipped with touch spring.
5. the SF6 three-stations load switch of magnetic quenching according to claim 4 is characterized in that, the inboard of described two contacts is provided with stop collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234070.9A CN103280368B (en) | 2013-06-13 | 2013-06-13 | The SF6 three-stations load switch of magnetic quenching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234070.9A CN103280368B (en) | 2013-06-13 | 2013-06-13 | The SF6 three-stations load switch of magnetic quenching |
Publications (2)
| Publication Number | Publication Date |
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| CN103280368A true CN103280368A (en) | 2013-09-04 |
| CN103280368B CN103280368B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310234070.9A Active CN103280368B (en) | 2013-06-13 | 2013-06-13 | The SF6 three-stations load switch of magnetic quenching |
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Citations (9)
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| CN1034633A (en) * | 1987-06-25 | 1989-08-09 | 梅兰日兰公司 | The rotary switch that has curved surface shaped arc root transferring guiding means |
| KR20040028430A (en) * | 2002-09-30 | 2004-04-03 | 엘지산전 주식회사 | Contact apparatus for knife-blade |
| CN2836279Y (en) * | 2005-07-14 | 2006-11-08 | 杭州电器开关有限公司 | 12KV indoor AC high-voltage sulfur hexafluoride ring network switchgear |
| CN101331572A (en) * | 2005-12-13 | 2008-12-24 | 西门子公司 | Load interrupter for an encapsulated switchgear and permanent magnet system for a load interrupter |
| CN201215780Y (en) * | 2008-06-23 | 2009-04-01 | 南京电气（集团）有限责任公司 | Contact tip component for high-voltage isolation switch |
| CN201498386U (en) * | 2009-09-15 | 2010-06-02 | 湖南长高高压开关集团股份公司 | Static contact device used for gas insulated metal-enclosed switchgear |
| CN202394794U (en) * | 2011-12-30 | 2012-08-22 | 厦门华电开关有限公司 | Gas-insulated load switch |
| KR101239741B1 (en) * | 2012-12-21 | 2013-03-06 | (주)금정이엔씨 | Knife-blade of contacting apparatus for apartment house |
| CN203312138U (en) * | 2013-06-13 | 2013-11-27 | 北京合纵科沃尔电力科技有限公司 | Magnetic quenching SF6 three-position load switch |
-
2013
- 2013-06-13 CN CN201310234070.9A patent/CN103280368B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034633A (en) * | 1987-06-25 | 1989-08-09 | 梅兰日兰公司 | The rotary switch that has curved surface shaped arc root transferring guiding means |
| KR20040028430A (en) * | 2002-09-30 | 2004-04-03 | 엘지산전 주식회사 | Contact apparatus for knife-blade |
| CN2836279Y (en) * | 2005-07-14 | 2006-11-08 | 杭州电器开关有限公司 | 12KV indoor AC high-voltage sulfur hexafluoride ring network switchgear |
| CN101331572A (en) * | 2005-12-13 | 2008-12-24 | 西门子公司 | Load interrupter for an encapsulated switchgear and permanent magnet system for a load interrupter |
| CN201215780Y (en) * | 2008-06-23 | 2009-04-01 | 南京电气（集团）有限责任公司 | Contact tip component for high-voltage isolation switch |
| CN201498386U (en) * | 2009-09-15 | 2010-06-02 | 湖南长高高压开关集团股份公司 | Static contact device used for gas insulated metal-enclosed switchgear |
| CN202394794U (en) * | 2011-12-30 | 2012-08-22 | 厦门华电开关有限公司 | Gas-insulated load switch |
| KR101239741B1 (en) * | 2012-12-21 | 2013-03-06 | (주)금정이엔씨 | Knife-blade of contacting apparatus for apartment house |
| CN203312138U (en) * | 2013-06-13 | 2013-11-27 | 北京合纵科沃尔电力科技有限公司 | Magnetic quenching SF6 three-position load switch |
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| CN103280368B (en) | 2015-10-28 |
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Effective date of registration: 20160308 Address after: 300301 Binhai hi tech Zone, Binhai New Area, Tianjin, 10 Tai Tay Road Patentee after: TIANJIN HEZONG POWER EQUIPMENT CO., LTD. Address before: 100085 Jiahua building, 3rd Street, Beijing, Haidian District, D1211 Patentee before: Beijing Hezong Kolwell Power Science & Technology Co., Ltd. |