CN103280368B - The SF6 three-stations load switch of magnetic quenching - Google Patents
The SF6 three-stations load switch of magnetic quenching Download PDFInfo
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- CN103280368B CN103280368B CN201310234070.9A CN201310234070A CN103280368B CN 103280368 B CN103280368 B CN 103280368B CN 201310234070 A CN201310234070 A CN 201310234070A CN 103280368 B CN103280368 B CN 103280368B
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- main fixed
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- fixed contact
- load switch
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Abstract
The invention discloses a kind of SF6 three-stations load switch of magnetic quenching, comprise main fixed contact, moving contact, grounding static contact, moving contact is provided with biplate contact, and main fixed contact is inserted between biplate, and the position of the contact pad of main fixed contact and moving contact is provided with permanent magnet.The opposite site of main fixed contact and moving contact is provided with copper-tungsten.Main fixed contact is overall structure, and its both sides are respectively equipped with radiating groove.Be bolted between the two panels contact of moving contact, the outside of two panels contact is respectively equipped with touch spring.The inner side of two panels contact is provided with stop collar.Improve current capacity and the arc resistant ablation ability of moving contact, make contact pressure be convenient to adjustment, improve assembly difficulty, improve opening velocity and close sum velocity, shortening the arcing time.
Description
Technical field
The present invention relates to a kind of SF6 on-load switch, particularly relate to a kind of SF6 three-stations load switch of magnetic quenching.
Background technology
SF6 on-load switch is mainly used in high-voltage ring main unit manufacturing, is widely used in high pressure transmission and distribution networks, has applied very over a long time, stable performance in 10kV electric pressure.But 24kV electric pressure performance (as active load cut-off, transfer current cut-offs) have very large decline, sometimes may cause the forfeiture of function, power supply quality be declined, causes accident of power supply.
The main cause of existing product hydraulic performance decline is caused to be the rising of the recovery voltage after cut-offfing, primary voltage grade is 12kV, and when using 24kV electric pressure, arc energy is made to increase a lot, electric arc localized burn contact is serious, and radiating condition declines, and the arcing time is elongated, break performance is significantly declined, final failure of interruption.
SF6 on-load switch of the prior art, moving contact is single chip architecture; Main fixed contact is composite construction, and internal layer is fine copper, and skin is beryllium-bronze; Contact pressure is provided by the spring steel plate outside fixed contact.
At least there is following shortcoming in above-mentioned prior art:
Moving contact flow conductivity and heat-sinking capability poor, arc resistant ablation ability; Main fixed contact electric interface is more, adds the resistance of major loop, carries current capacity poor, arc resistant ablation ability; Contact pressure adjustment difficulty, be not easy to debugging, spring steel plate heat treatment required precision is higher; Electric arc easily concentrates ablation contact local, is unfavorable for repeatedly cut-offfing; Divide, closing speed is on the low side, the arcing time is longer.
Summary of the invention
The object of this invention is to provide the SF6 three-stations load switch of a kind of current capacity and the high magnetic quenching of arc resistant ablation ability.
The object 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, grounding static contact, described moving contact is provided with biplate contact, and described main fixed contact is inserted between biplate, and the position of the contact pad of described main fixed contact and described moving contact is provided with permanent magnet.
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 present invention provides, because moving contact is provided with biplate contact, main fixed contact is inserted between biplate, the position of the contact pad of main fixed contact and moving contact is provided with permanent magnet, improves current capacity and the arc resistant ablation ability of moving contact.
Accompanying drawing explanation
The structural representation of the SF6 three-stations load switch of the magnetic quenching that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structural representation of moving contact in the embodiment of the present invention.
In figure:
1, main fixed contact, 2, grounding static contact, 3, copper-tungsten, 4, moving contact, 5, transmission shaft insulation, 6, permanent magnet, 7, touch spring, 8, stop collar, 9, radiating groove.
Embodiment
To be described in further detail the embodiment of the present invention below.
The SF6 three-stations load switch of magnetic quenching of the present invention, its preferably embodiment be:
Comprise main fixed contact, moving contact, grounding static contact, described moving contact is provided with biplate contact, and described main fixed contact is inserted between biplate, and the position of the contact pad of described main fixed contact and described moving contact is provided with permanent magnet.
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 radiating groove.
Be bolted between the two panels contact of described moving contact, the outside of two panels contact is respectively equipped with touch spring.
The inner side of described two panels contact is provided with stop collar.
The SF6 three-stations load switch of magnetic quenching of the present invention, improves current capacity and the arc resistant ablation ability of moving contact; Decrease the electric interface of fixed contact, improve current capacity, improve arc erosion ability; Make contact pressure be convenient to adjustment, improve assembly difficulty; Electric arc is moved in contact surface, improves because electric arc easily concentrates ablation contact local and bring unfavorable situation of repeatedly cut-offfing; Improve opening velocity and close sum velocity, shortening the arcing time.
Specific embodiment, as shown in Figure 1 and Figure 2:
Moving contact is double-sheet arrangement, and is loaded on outside moving contact by touch spring;
Change main fixed contact into overall structure, and increase area of dissipation;
At the position soldering copper tungsten alloy of dynamic/static contact arc erosion;
On main fixed contact, near the position of dynamic/static contact contact, cuboid permanent magnet is installed;
The rigidity of the energy accumulation spring of spring mechanism is improved, to promote divide-shut brake speed;
The beneficial effect that technical solution of the present invention is brought:
Can the electric current break performance of improving product, make to cut-off more reliable and stable; This on-load switch moving contact is double-sheet arrangement, adds and carries current capacity and area of dissipation; Touch spring is loaded on outside moving contact, facilitates the adjustment of contact pressure, is of value to the adjustment of product major loop resistance; Main fixed contact changes overall structure into, decreases electric interface, and major loop is declined, and increases groove, with increasing heat radiation area on its surface; At the position soldering copper tungsten alloy of dynamic/static contact arc erosion; 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 sum remanent magnetism parameter is high, rely on this magnetic field that electric arc is moved in contact surface, and under the blowing of SF6 gas, electric arc is extinguished rapidly, improve arc extinguishing speed, reduce electric arc to damage the ablation of contact, improve electric current open and close times; The rigidity of the energy accumulation spring of spring mechanism is improved, to promote divide-shut brake speed, shortens the arcing time, reduce electric arc to the ablation infringement of lifting one's head.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change 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 (4)
1. the SF6 three-stations load switch of a magnetic quenching, comprise main fixed contact, moving contact, grounding static contact, it is characterized in that, described moving contact is provided with biplate contact, described main fixed contact is inserted between biplate, and the position of the contact pad of described main fixed contact and described moving contact is provided with permanent magnet;
Described main fixed contact is overall structure, and its both sides are respectively equipped with radiating groove.
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 1 and 2, is characterized in that, be bolted between the two panels contact of described moving contact, the outside of two panels contact is respectively equipped with touch spring.
4. the SF6 three-stations load switch of magnetic quenching according to claim 3, is characterized in that, the inner side of described two panels contact 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 |
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| CN103280368A CN103280368A (en) | 2013-09-04 |
| CN103280368B true CN103280368B (en) | 2015-10-28 |
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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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100455436B1 (en) * | 2002-09-30 | 2004-11-06 | 엘지산전 주식회사 | Contact apparatus for knife-blade |
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- 2013-06-13 CN CN201310234070.9A patent/CN103280368B/en active Active
Patent Citations (8)
| 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 |
| 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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| CN103280368A (en) | 2013-09-04 |
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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. |