CN101819903A - Dynamic/static contact device of main circuit of load switch - Google Patents
Dynamic/static contact device of main circuit of load switch Download PDFInfo
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- CN101819903A CN101819903A CN 201010157165 CN201010157165A CN101819903A CN 101819903 A CN101819903 A CN 101819903A CN 201010157165 CN201010157165 CN 201010157165 CN 201010157165 A CN201010157165 A CN 201010157165A CN 101819903 A CN101819903 A CN 101819903A
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- arc extinguishing
- static contact
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Abstract
The invention discloses a dynamic/static contact device of a main circuit of a load switch, comprising a dynamic contact device, a static contact device and a rocker arm, wherein the dynamic contact device and the static contact device are arranged coaxially; the dynamic contact device comprises a cylindrical intermediate electrode, two ends of the cylindrical intermediate electrode are provided with contact blade grooves. A contact blade is respectively arranged at the contact blade grooves at two ends of the intermediate electrode; the upper contact blade is communicated with the conductive electrode of the main loop; the intermediate electrode and the contact blade sleeve member are installed in an arc extinguishing sleeve, and the lower end of an arc extinguishing sleeve is provided with an arc extinguishing; a guide groove is arranged on the external surface of the arc extinguishing sleeve; one end of the rocker arm is concentrically fixed with a spindle, while the other end is tangentially connected with the guide groove of the arc extinguishing sleeve in a sliding manner. The dynamic/static contacts adopt the two-station direct acting design, so the invention effectively avoids the occurrence of the arc rejection, reduces the operation power needed for the engaging and disengaging of the dynamic contact and the static contact and simplifies the design of the relative operating mechanism.
Description
Technical field
The present invention relates to the dynamic/static contact device of major loop in a kind of high voltage electric appliance, especially relate to a kind of dynamic/static contact device that is used for main circuit of load switch blossom type contact, belong to technical field of electricity.
Background technology
The most use with SF6 gas of China's loop-network switch cabinet is dielectric at present, disconnecting link formula moving contact, the loop-network switch cabinet of the auxiliary arc extinguishing of arc extinguishing coral sheet, the general three station spring operating mechanisms that adopt, rotate by a final drive shaft and to drive the fixing flexibly moving contact rotation of three-phase and connecting lever, make remain on major loop fixed contact and grounded circuit fixed contact between, the forward and reverse rotation of the disconnecting link formula moving contact of isolated location realizes separating brake, combined floodgate, the action of ground connection three stations.And, when the switch on/off switch, inevitably get rid of the arc phenomenon with the on-load switch structure of contact terminal that this disconnecting link formula structure is a moving contact, this phenomenon causes relatively puncturing easily.Reason is in deciliter moving contact motion process, it is very inhomogeneous that dynamic/static contact two ends electric field becomes, the electric arc that is produced belongs to accumulation type electric arc, arc energy is very big, and the material of its dynamic/static contact is the fine copper formation, and its fusing point is low, and anti-electric arc is indifferent, cause electric life low, connecting-disconnecting function, making capability are not strong.As everyone knows, in high voltage electric appliance, various types of structure of contact terminals all play decisive role to the performance of product, the capacity and the reliability of products of product.The dynamic/static contact structural design of switch is the core of whole loop-network switch cabinet, and the structural design of dynamic/static contact directly influences the piece electrical index performance of loop-network switch cabinet.
Summary of the invention
Technical problem to be solved by this invention provide a kind of have anti-electric arc ability strong, have high electric life, electric field is even, avoids getting rid of the arc phenomenon, two stations that improve electricity function indexs such as dynamic/static contact cut-offs, Guan He greatly are the contact apparatus of moving form directly.
In order to address the above problem, technical scheme of the present invention is such:
A kind of dynamic/static contact device of main circuit of load switch, comprise trigger device, static contact head device and connecting lever, it is characterized in that: trigger device and static contact head device concentric are arranged, described trigger device comprises a cylindrical shape target, described target two ends have the contact groove, contact groove place at the target two ends is provided with a contact respectively, the contact of upper end communicates with the major loop conductive electrode, target and contact external member are installed in the arc extinguishing sleeve pipe, arc extinguishing sleeve pipe lower end is provided with the arc extinguishing nozzle, described arc extinguishing bushing outer surface is provided with gathering sill, and connecting lever one end is concentric fixing with main shaft, the other end and tangent being slidingly connected of arc extinguishing sleeve pipe gathering sill.
Aforesaid dynamic/static contact device of main circuit of load switch is characterized in that: described arc extinguishing sleeve pipe lower ending opening place is provided with internal thread, and the rotation of arc extinguishing nozzle is fastened on the internal thread place, lower end of arc extinguishing sleeve pipe.
Aforesaid dynamic/static contact device of main circuit of load switch is characterized in that: the spring that described contact is colluded mutually by head and the tail is fixed on the contact groove place of target.
Aforesaid dynamic/static contact device of main circuit of load switch is characterized in that: the contact of the upper end of target is one time punching molded undaform slip flap contact, and slip flap contact two ends have the groove that is used for fixing spring.
Aforesaid dynamic/static contact device of main circuit of load switch is characterized in that: the material of described slip flap contact is an anaerobic T2 copper.
Aforesaid dynamic/static contact device of main circuit of load switch is characterized in that: the contact of the lower end of target is a flap copper-tungsten contact, and flap copper-tungsten contact two ends have the groove that is used for fixing spring.
Aforesaid dynamic/static contact device of main circuit of load switch is characterized in that: described spring does not have the magnetic material by stainless steel and makes.
Aforesaid dynamic/static contact device of main circuit of load switch is characterized in that: the contact end of described static contact head device is provided with the copper-tungsten layer.
Aforesaid dynamic/static contact device of main circuit of load switch is characterized in that: described arc extinguishing sleeve pipe comprises cylindrical shell and lid, is provided with and nozzle retaining ring between described cylindrical shell and the lid.
Aforesaid dynamic/static contact device of main circuit of load switch is characterized in that: described arc extinguishing nozzle reaches and the material of nozzle retaining ring is a polytetrafluoroethylene.
The invention has the beneficial effects as follows: among the present invention, Mume flower contact system is because dynamic/static contact adopts the directly moving design of two stations, effectively avoid getting rid of the generation of arc phenomenon, and lowered dynamic/static contact and close the required operating work of branchs, simplified the design of associated operating mechanism.And used high performance electric arc resistant material at dynamic/static contact two contact jaws, and even electric field design, lowered arc energy, improved electric life greatly, effectively increased connecting-disconnecting function and making capability etc., integral body has improved each side electrical equipment index.And, form an integral body trigger device and the integrated design of arc extinguishing sleeve pipe, and simplified operation, effectively raise efficiency of assembling, reduced cost of labor, improved the product whole reliability.
Description of drawings
Fig. 1 is a dynamic/static contact device sub-gate position interposed structure schematic diagram of the present invention;
Fig. 2 is a dynamic/static contact device closing position structural representation of the present invention;
Fig. 3 is a moving contact structure schematic diagram of the present invention;
Fig. 4 is a static contact structure schematic diagram of the present invention;
Fig. 5 is a moving contact current-carrying part structural representation of the present invention;
Fig. 6 is a moving contact flap contact structural representation of the present invention;
Fig. 7 is a trigger device intermediate electrode structure schematic diagram of the present invention;
Fig. 8 is a trigger device copper-tungsten contact structural representation of the present invention;
Fig. 9 is a trigger device arc extinguishing sleeve structure schematic diagram of the present invention.
Respectively be labeled as among the figure:
The 1-arc extinguishing sleeve pipe 2-flap contact 3-first spring 4-second spring 5-target
7-the 3rd spring 8-copper-tungsten contact 9-the 4th spring 10-arc extinguishing nozzle
11-fixed contact 12-lid 13-major loop conductive electrode 14-connecting lever
Embodiment
Below in conjunction with concrete accompanying drawing, further set forth the present invention.
Fig. 3 is a moving contact structure schematic diagram of the present invention, moving contact of the present invention is fixed nine flap contacts 2 in the even annular in target 5 one end band contact groove 51 places, and it is fixing with second spring 4 in the spring holddown groove of flap contact 2 and target 5 connections, second spring 4 is by mutually hook-shaped the circularizing of spring head and the tail, the target 5 that makes flap contact 2 and anaerobic T2 copper become forms binding and is connected annular fixing, first spring 3 is installed in the another side spring holddown groove of flap contact 2, is made flap contact 2 other ends form binding alone and connect annular fixing; The place of the other end contact groove of target 5, evenly annular is fixed nine copper-tungsten contacts 8, and at spring holddown groove internal fixation three spring 7 of copper-tungsten contact 8 with target 5 connections, the 3rd spring 7 makes copper-tungsten contact 8 and target 5 form and bundlees and is connected annular fixing, the interior installation of the another side spring holddown groove of copper-tungsten contact 8 the 4th spring 9, the four springs 9 make the other end of copper-tungsten contact 8 form binding connection annular alone and fix.Target that assembles and flap contact external member are installed in the arc extinguishing sleeve pipe 1 with specific purpose tool, and arc extinguishing nozzle 10 usefulness special spanners turn clockwise and are fastened on the threaded place of arc extinguishing sleeve pipe 1, make it always to dress up trigger device.Described arc extinguishing sleeve pipe 1 comprises cylindrical shell and lid 12, be provided with between described cylindrical shell and the lid 12 nozzle retaining ring 1 '.
Fig. 4 is a static contact structure schematic diagram of the present invention.And fixed contact is to fire shaping with special electric arc resistant material with brand-new integral sintered technology, the more one-piece type part of making by high-precision turning process.Fixed contact 11 is individual part, is vertically fixed on one heart on the insulating part, communicates with outlet, and distance is 50mm+-2mm between fracture.
When design flap copper-tungsten contact and fixed contact, all not only consider the design of operating principle, sliding contact conductance, electric power etc., also taken into full account the uniform electric field design.
Being arranged vertically as shown in Figure 1 of moving contact and fixed contact, moving contact are installed on the major loop conductive electrode 13 with one heart, and the other end of major loop conductive electrode 13 communicates with major loop, and the other end communicates with the flap contact 2 of trigger device.Connecting lever 14 1 ends are concentric fixing with main shaft, and an end and the tangent slip of arc extinguishing sleeve pipe 1 gathering sill are fixed.Stir trigger device and move downward by the connecting lever on the limit 14 37 degree that turn clockwise, because of conductive electrode has the straight-line guidance function, the Gu trigger device is turned clockwise to rotatablely move when stirring by connecting lever and is converted into downward rectilinear motion, trigger device moves downward 70mm to fixed contact 11, and the part that the contacts excess of stroke is 20mm.Realize the feed motion of moving contact and fixed contact with this, as shown in Figure 2, connecting lever 14 is rotated counterclockwise 37 degree, and the trigger device straight line 70mm that moves upward realizes the separating brake function of dynamic/static contact.As shown in Figure 1, begin the starting the arc at a distance of the 15mm place by the copper-tungsten position of copper-tungsten contact in the trigger device 8 and fixed contact 11 ends when the trigger device straight line is moved down into fixed contact 11, along with the quick contact of dynamic/static contact, electric arc extinguishes thereupon.When upwards being linearly moved to fixed contact, just separated in a flash trigger device, beginning is in the copper-tungsten contact 8 and the fixed contact 11 end starting the arc, follow the trigger device straight line to move upward, SF6 gas in the arc extinguishing sleeve pipe 1 is compressed, form downward air-flow, the flow velocity of air-flow is also proportional with the trigger device movement velocity.Gas is to copper-tungsten contact 8 flow at high speed, and by the ejection of arc extinguishing nozzle 10 places, blows to fixed contact 11 ends, when trigger device moves upward to from fixed contact 15mm place, arc extinction.Because copper-tungsten contact 8 has all adopted the generally acknowledged copper-tungsten of the anti-electric arc material of industry with fixed contact 11, and incorporated the uniform electric field design in copper-tungsten contact 8 and contacted end, fixed contact 11 two ends, the straight line of trigger device moves up and down and has avoided getting rid of the arc phenomenon effectively, and make trigger device in motion process, keep the uniformity of electric field, make electric arc more even at copper-tungsten contact 8 and fixed contact 11 two ends cigarette burnings, reduce the scaling loss degree greatly, effectively raise electric life.Thereby increased connecting-disconnecting function and making capability etc. effectively, integral body has improved the electric index of each side.And, form an integral body trigger device and the integrated design of arc extinguishing sleeve pipe, and simplified operation, improved efficiency of assembling effectively, reduced cost of labor, improved reliability of products.
More than show and described the advantage of basic principle of the present invention, principal character and this aspect.The technical staff of the industry should know to some extent; the present invention is not subjected to the restriction of above-mentioned enforcement; that describes in above-mentioned implementation column and the specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all will fall into to be wanted in the de-protected scope of the invention.The protection range that the present invention requires is defined by appending claims and equivalent thereof.
Claims (10)
1. dynamic/static contact device of main circuit of load switch, comprise trigger device, static contact head device (11) and connecting lever (14), it is characterized in that: trigger device and static contact head device concentric are arranged, described trigger device comprises a cylindrical shape target (5), described target (5) two ends have contact groove (51), contact groove (51) at target (5) two ends locates to be provided with respectively a contact, the contact of upper end links to each other with major loop conductive electrode (13), target (5) and contact external member are installed in the arc extinguishing sleeve pipe (1), arc extinguishing sleeve pipe (1) lower end is provided with arc extinguishing nozzle (10), described arc extinguishing sleeve pipe (1) outer surface is provided with gathering sill, connecting lever (14) one ends are concentric fixing with main shaft, the other end and tangent being slidingly connected of arc extinguishing sleeve pipe (1) gathering sill.
2. dynamic/static contact device of main circuit of load switch according to claim 1 is characterized in that: described arc extinguishing sleeve pipe (1) lower ending opening place is provided with internal thread, and arc extinguishing nozzle (10) rotation is fastened on the internal thread place, lower end of arc extinguishing sleeve pipe.
3. dynamic/static contact device of main circuit of load switch according to claim 1 is characterized in that: the spring that described contact is colluded mutually by head and the tail is fixed on the contact groove (51) of target (5) and locates.
4. according to claim 1 or 3 described dynamic/static contact device of main circuit of load switch, it is characterized in that: the contact of the upper end of target (5) is one time punching molded undaform slip flap contact (2), and slip flap contact (2) two ends have the groove that is used for fixing spring.
5. dynamic/static contact device of main circuit of load switch according to claim 4 is characterized in that: the material of described slip flap contact (2) is an anaerobic T2 copper.
6. according to claim 1 or 3 described dynamic/static contact device of main circuit of load switch, it is characterized in that: the contact of the lower end of target (5) is a flap copper-tungsten contact (8), and flap copper-tungsten contact (8) two ends have the groove that is used for fixing spring.
7. dynamic/static contact device of main circuit of load switch according to claim 2 is characterized in that: described spring does not have the magnetic material by stainless steel and makes.
8. dynamic/static contact device of main circuit of load switch according to claim 1 and 2 is characterized in that: the contact end of described static contact head device (11) is provided with copper-tungsten layer (15).
9. dynamic/static contact device of main circuit of load switch according to claim 1 is characterized in that: described arc extinguishing sleeve pipe (1) comprises cylindrical shell and lid (12), is provided with nozzle retaining ring (1 ') between described cylindrical shell and the lid (12).
10. dynamic/static contact device of main circuit of load switch according to claim 9 is characterized in that: described arc extinguishing nozzle (10) reaches and the material of nozzle retaining ring (1 ') is a polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101571651A CN101819903B (en) | 2010-04-26 | 2010-04-26 | Dynamic/static contact device of main circuit of load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101571651A CN101819903B (en) | 2010-04-26 | 2010-04-26 | Dynamic/static contact device of main circuit of load switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101819903A true CN101819903A (en) | 2010-09-01 |
| CN101819903B CN101819903B (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101571651A Expired - Fee Related CN101819903B (en) | 2010-04-26 | 2010-04-26 | Dynamic/static contact device of main circuit of load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101819903B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903901A (en) * | 2014-04-23 | 2014-07-02 | 苏金发 | Contact mechanism of three-position high-voltage switch |
| CN104078269A (en) * | 2013-03-27 | 2014-10-01 | 上海中亚电气有限公司 | Load switch |
| CN106710947A (en) * | 2017-02-07 | 2017-05-24 | 平高集团有限公司 | Direct-acting type three-station load switch and switch cabinet with load switch |
| CN109494824A (en) * | 2018-09-12 | 2019-03-19 | 国网浙江省电力有限公司嘉兴供电公司 | A kind of electric automobile charging pile and its control method |
| CN114464496A (en) * | 2022-02-17 | 2022-05-10 | 中国科学院合肥物质科学研究院 | Large current breaking mechanical switch with annular split petal type movable contact structure combined with arc contact |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10144187A (en) * | 1996-11-06 | 1998-05-29 | Yaskawa Electric Corp | Rotary arc type gas-blast load-break switch |
| CN201378541Y (en) * | 2009-03-13 | 2010-01-06 | 扬州北辰电气设备有限公司 | Novel load switch |
| CN201673850U (en) * | 2010-04-26 | 2010-12-15 | 南京业基电气设备有限公司 | Load switch main-loop movable, static contact device |
-
2010
- 2010-04-26 CN CN2010101571651A patent/CN101819903B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10144187A (en) * | 1996-11-06 | 1998-05-29 | Yaskawa Electric Corp | Rotary arc type gas-blast load-break switch |
| CN201378541Y (en) * | 2009-03-13 | 2010-01-06 | 扬州北辰电气设备有限公司 | Novel load switch |
| CN201673850U (en) * | 2010-04-26 | 2010-12-15 | 南京业基电气设备有限公司 | Load switch main-loop movable, static contact device |
Non-Patent Citations (1)
| Title |
|---|
| 《华通技术》 2005 方煜英 关于梅花触头的设计要领 第39页第2栏第6行-第12行，附图3 1-10 第2005卷, 第2期 2 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078269A (en) * | 2013-03-27 | 2014-10-01 | 上海中亚电气有限公司 | Load switch |
| CN104078269B (en) * | 2013-03-27 | 2017-12-05 | 上海中亚电气有限公司 | A kind of on-load switch |
| CN103903901A (en) * | 2014-04-23 | 2014-07-02 | 苏金发 | Contact mechanism of three-position high-voltage switch |
| CN106710947A (en) * | 2017-02-07 | 2017-05-24 | 平高集团有限公司 | Direct-acting type three-station load switch and switch cabinet with load switch |
| CN109494824A (en) * | 2018-09-12 | 2019-03-19 | 国网浙江省电力有限公司嘉兴供电公司 | A kind of electric automobile charging pile and its control method |
| CN109494824B (en) * | 2018-09-12 | 2022-03-15 | 国网浙江省电力有限公司嘉兴供电公司 | Electric automobile charging pile and control method thereof |
| CN114464496A (en) * | 2022-02-17 | 2022-05-10 | 中国科学院合肥物质科学研究院 | Large current breaking mechanical switch with annular split petal type movable contact structure combined with arc contact |
| CN114464496B (en) * | 2022-02-17 | 2023-04-25 | 中国科学院合肥物质科学研究院 | Heavy current breaking mechanical switch with annular split flap type moving contact structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101819903B (en) | 2012-08-29 |
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| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Owner name: JIANGSU YUCHENG YEJI ELECTRIC EQUIPMENT CO., LTD. Free format text: FORMER OWNER: NANJING YEJI ELECTRIC DEVICE CO., LTD. Effective date: 20141030 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141030 Address after: 211151 Jiangsu airport hub of Nanjing Jiangning Economic Development Zone No. 4 District clock crafts Patentee after: Jiangsu Yucheng industry base electrical equipment Co., Ltd. Address before: Jiangning Economic Development Zone, Nanjing City, Jiangsu province 211151 Metro Airport Industrial Park Avenue South City Industrial Park Patentee before: Nanjing Yeji Electric Device Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20160426 |