CN104576160A - Solid insulating three-position isolating switch with grounding switching off capability - Google Patents
Solid insulating three-position isolating switch with grounding switching off capability Download PDFInfo
- Publication number
- CN104576160A CN104576160A CN201410804883.1A CN201410804883A CN104576160A CN 104576160 A CN104576160 A CN 104576160A CN 201410804883 A CN201410804883 A CN 201410804883A CN 104576160 A CN104576160 A CN 104576160A
- Authority
- CN
- China
- Prior art keywords
- isolating switch
- cavity
- isolation
- switch
- solid insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/022—Details particular to three-phase circuit breakers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a solid insulating three-position isolating switch with a grounding switching off capability. The solid insulating three-position isolating switch comprises a pole body and a pole sealing plate; an isolating fixed contact, an isolating cutter moving contact and a grounding fixed contact are arranged in a cavity of the pole body; the isolating cutter moving contact is also connected with a spring operation structure through a pull rod. The solid insulating three-position isolating switch adopts an integrative structure of a grounding switch and an isolating switch, and the integrative structure is placed in the cavity of the pole body, and is a three-position isolating switch wholly; the switching on/off of the isolating switch is realized through the spring operating mechanism, the switching off speed is 0.6 +/- 0.2 m/s, the isolating switch can realize switching off for 2 times under a short circuit condition, the rated switching off current is 25 kA, and the switching off capability of the grounding switch meets the national standard E1-level requirements; by adoption of the solid insulating three-position isolating switch, the problem that a solid insulating product has no grounding switching off capability is solved, so that the product has higher practicability, and the stability and the reliability of the solid insulating product are greatly improved.
Description
Technical field
The present invention relates to high voltage electric appliance, especially relate to the solid insulation three-station isolating switch in high voltage electric appliance.
Background technology
Along with national grid promotes the increasing of solid insulation switch product dynamics in recent years, the producer of the solid insulation product that market produces is more and more gradually, the earthed switch structure of product is also varied, Direct Action Type, revolving, disconnecting link formula ... but the earthed switch of various structure itself does not all have short circuit making capability, the switch of making capability is had to be all realized by vacuum switch mostly.
Existing solid insulation product earthed switch be no matter independent structure or with isolating switch integral structure, all do not have closing speed during operation, three-phase synchronism is also low.Without any the measure of extinguishing arc, so short circuit making capability cannot be possessed.
Be grounded with vacuum switch and close, although making capability is, this mode of operation does not conform to electric power operation code with operating habit all the time, and is not easy to allow client accept.
If the earthed switch of band making capability conventional air insulation (as JN15) or SF6 insulated realizes, because its volume is large or there is greenhouse gas emission, also cannot be compatible with solid insulation product.
Summary of the invention
For the problems referred to above, the invention provides a kind of solid insulation three-station isolating switch with contact of earth speed and short circuit making capability.
The technical scheme that the present invention adopts for its technical problem of solution is:
The solid insulation three-station isolating switch of making capability with ground, it is characterized in that: comprise pole body and pole shrouding, isolation grounding assembly is provided with in the cavity of pole body, described isolation grounding assembly comprises the isolation fixed contact be electrically connected by a vacuum interrupter and busbar joint, the isolation knife moving contact be electrically connected with cable joint, be electrically connected with earth terminal and be fixed on the grounding static contact on pole shrouding, described isolation knife moving contact is also connected with spring-operated structure by a pull bar.
As the further improvement of such scheme, the cavity of pole body is divided into separate vacuum switch cavity and isolating switch cavity, and described vacuum interrupter is arranged in vacuum switch cavity, and described isolation grounding assembly is arranged in isolating switch cavity.
As the further improvement of such scheme, described grounding static contact is provided with extinguishing arc permanent magnet with the relative dual-side of isolation knife moving contact binding site.
As the further improvement of such scheme, described isolation knife moving contact and grounding static contact adopt the manufacture of copper-tungsten material to form.
As the further improvement of such scheme, described pole body is provided with at least one and is communicated with cavity and extraneous unidirectional valve pressure release passage.
As the further improvement of such scheme, be provided with a division board between described vacuum switch cavity and isolating switch cavity, described division board and pole body, busbar joint, cable joint are packaged into integrative-structure.
As the further improvement of such scheme, described isolation fixed contact is encapsulated on the inside cavities wall of pole body.
As the further improvement of such scheme, the isolating switch cavity being positioned at described cable joint place is provided with recessed mounting groove, be provided with an isolation touch base in described mounting groove, described isolation touch base one end is fixedly connected with cable joint, and the other end is connected with isolation knife contact pivotable.
Further, the aobvious transducer of electricity is sealed with in described cable joint.
The invention has the beneficial effects as follows: the solid insulation three-station isolating switch of the present invention's making capability with ground is the integrative-structure of earthed switch and isolating switch, be placed in the cavity of pole body, entirety is tri-station isolating switch (combined floodgate-separating brake-ground connection three states), isolating switch realizes folding by spring operating mechanism, there is the pass sum velocity of 0.6 ± 0.2m/s, short circuit can be carried out and close 2 times, the specified making current of 25kA, the making capability of earthed switch meets the E1 level requirement of GB, this structure can solve the problem of the no ground making capability of solid insulation product, product is made to possess higher Practical Performance, very large raising is had to the stability of solid insulation switch product and reliability,
Further, vacuum interrupter and three stations (close-point-ground connection) isolating switch is separately positioned in separate cavity, insulation property are independent of each other, space crossed layout is not had between electric-conductor, the Electric Field Distribution of switch is simply even, office puts little, and problem is put in the insulation drawn game solved between vacuum switch and isolating switch;
Further, the permanent magnet of grounding static contact with the position that isolation knife moving contact 12 is combined with extinguishing arc effect, under the influence of a magnetic field, move and assemble in the direction that the electric arc produced when earthed switch closes guides to fixed contact along the magnetic line of force, make electric arc can not to outdiffusion, when earthed switch combined floodgate puts in place, electric arc extinguishes gradually, avoids the aging and damage of the switch because arcing produces and insulating part;
Further, isolation knife moving contact and grounding static contact adopt novel copper-tungsten material manufacture, have high temperature resistant, arc resistance energy, when short circuit closes, avoid the defect of dynamic and static contact ablation, melting welding;
Further, install the pressure release passage of pole cavity built with unidirectional valve of isolating switch, the heat that can produce when closing big current at switch is derived and is drained, and reduces and closes the impact of energy to product.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention, instead of whole embodiments, those skilled in the art under the prerequisite not paying creative work, other designs that can also obtain according to these accompanying drawings and accompanying drawing:
Front section view when Fig. 1 is embodiment of the present invention isolating switch separating brake;
The cutaway view in A-A direction when Fig. 2 is embodiment of the present invention isolating switch separating brake;
Fig. 3 is the partial enlarged drawing at Fig. 2 I place;
Fig. 4 is the magnetic direction of permanent magnet.
Embodiment
With reference to Fig. 1 ~ Fig. 4, the solid insulation three-station isolating switch of making capability with ground, comprise pole body 1, pole shrouding 2, busbar joint 5 and cable joint 6, described pole body 1, busbar joint 5, cable joint 6 is packaged into an overall structure, a cavity is formed between pole body 1 and pole shrouding 2, isolation grounding assembly is provided with in this cavity, described isolation grounding assembly comprises the isolation fixed contact 11 be electrically connected with busbar joint 5 by a vacuum interrupter 14, the isolation knife moving contact 12 be electrically connected with cable joint 6, be electrically connected with earth terminal and be fixed on the grounding static contact 13 on pole shrouding 2, described isolation knife moving contact 12 is also connected with spring-operated structure by a pull bar 15.
Further, the cavity of pole body 1 is divided into separate vacuum switch cavity 3 and isolating switch cavity 4 by a division board 19, described vacuum interrupter 14 is arranged in vacuum switch cavity 3, described isolation grounding assembly is arranged in isolating switch cavity 4, vacuum interrupter and three stations (close-point-ground connection) isolating switch is separately positioned in separate cavity, insulation property are independent of each other, space crossed layout is not had between electric-conductor, the Electric Field Distribution of switch is simply even, office puts little, problem is put in the insulation drawn game solved between vacuum switch and isolating switch, wherein said division board 19 is packaged into integrative-structure with pole body 1, busbar joint 5, cable joint 6, simplifies production technology, and because encapsulating material adopts epoxy resin usually, adopt epoxy resin to separate two cavitys, solve again the Insulation Problems between two cavitys.
Further, described grounding static contact 13 is provided with extinguishing arc permanent magnet 16 with the relative dual-side of isolation knife moving contact 12 binding site, and described extinguishing arc permanent magnet 16 carries out installation location by the mounting panel 7 that is fixed on pole shrouding 2; With further reference to Fig. 4, wherein A is that electric arc is by the direction of answering, B is the direction of permanent magnet field, under the influence of a magnetic field, move and assemble in the direction that the electric arc produced when earthed switch closes guides to fixed contact along the magnetic line of force, make electric arc can not to outdiffusion, earthed switch close a floodgate put in place time electric arc extinguish gradually, avoid the aging of the switch because arcing produces and insulating part and damage.
Further, described isolation knife moving contact 12 and grounding static contact 13, adopt novel copper-tungsten material manufacture, have high temperature resistant, arc resistance energy, when short circuit closes, avoids the defect of dynamic and static contact ablation, melting welding.
Further, the top dual-side of described pole body 1 is provided with two and is communicated with cavity and extraneous unidirectional valve pressure release passage 17, the heat that can produce when closing big current at switch is derived and is drained; Wherein pressure release passage 17 is at the top of product, can ensure the safety of operating personnel, and after pressure release, unidirectional valve is closed automatically, does not affect the sealing of product; Pressure release passage 17 is on the both sides of pole cavity, and do not affect transmission and the electric property of vacuum switch insulation extension bar, the quantity of certain unidirectional valve pressure release passage 17 can arrange 1,2 or multiple as required.
Further, described isolation fixed contact 11 is encapsulated on the inside cavities wall of pole body 1, and because encapsulating material is insulating material, this structure had both served the effect of fixing fixed contact, solved again the Insulation Problems of fixed contact simultaneously.
Further, the isolating switch cavity 4 being positioned at described cable joint place is provided with recessed mounting groove, and be provided with an isolation touch base 1 in described mounting groove, described isolation touch base 18 one end is fixedly connected with cable joint, and the other end is connected with isolation knife contact 12 pivotable; Isolation touch base 18 is put in the mounting groove of pole, be fixed on the copper insert of cable sleeve with screw-driving, mounting groove is recessed, just can have good positioning when isolation touch base 18 is installed, four limit sizes a few tenths of a mm larger than the size of isolation touch base of mounting groove, can carry out spacing immediately behind location quickly, installation process appoints adjustment and frock without the need to doing, easily can complete assembling screw belt is tightened, the efficiency that staff is installed is high, is also applicable to very much using the assembling of full-automatic installation manipulator.
Whether charged in order to detect on conductor, be sealed with the aobvious transducer 61 of electricity in described cable joint 6.If also need to arrange current transformer, then current transformer can directly be sleeved on above cable joint, and pulling up cable joint can safeguard Current Mutual Inductance receiver or change.
More than that better enforcement of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (9)
1. the solid insulation three-station isolating switch of making capability with ground, it is characterized in that: comprise pole body (1) and pole shrouding (2), isolation grounding assembly is provided with in the cavity of pole body (1), described isolation grounding assembly comprises the isolation fixed contact (11) be electrically connected by a vacuum interrupter (14) and busbar joint (5), the isolation knife moving contact (12) be electrically connected with cable joint (6), be electrically connected with earth terminal and be fixed on the grounding static contact (13) on pole shrouding (2), described isolation knife moving contact (12) is also connected with spring-operated structure by a pull bar (15).
2. the solid insulation three-station isolating switch of making capability with ground according to claim 1, it is characterized in that: the cavity of pole body (1) is divided into separate vacuum switch cavity (3) and isolating switch cavity (4), described vacuum interrupter (14) is arranged in vacuum switch cavity (3), and described isolation grounding assembly is arranged in isolating switch cavity (4).
3. the solid insulation three-station isolating switch of making capability with ground according to claim 1 and 2, is characterized in that: described grounding static contact (13) is provided with extinguishing arc permanent magnet (16) with the relative dual-side of isolation knife moving contact 12 binding site.
4. the solid insulation three-station isolating switch of making capability with ground according to claim 1 and 2, is characterized in that: described isolation knife moving contact (12) and grounding static contact (13) adopt the manufacture of copper-tungsten material to form.
5. the solid insulation three-station isolating switch of making capability with ground according to claim 1 and 2, is characterized in that: described pole body (1) is provided with at least one and is communicated with cavity and extraneous unidirectional valve pressure release passage (17).
6. the solid insulation three-station isolating switch of making capability with ground according to claim 2, it is characterized in that: be provided with a division board (19) between described vacuum switch cavity (3) and isolating switch cavity (4), described division board (19) and pole body (1), busbar joint (5), cable joint (6) are packaged into integrative-structure.
7. the solid insulation three-station isolating switch of making capability with ground according to claim 1 and 2, is characterized in that: described isolation fixed contact (11) is encapsulated on the inside cavities wall of pole body (1).
8. the solid insulation three-station isolating switch of making capability with ground according to claim 2, it is characterized in that: the isolating switch cavity (4) being positioned at described cable joint place is provided with recessed mounting groove, an isolation touch base (18) is provided with in described mounting groove, described isolation touch base (18) one end is fixedly connected with cable joint, and the other end is connected with isolation knife contact (12) pivotable.
9. the solid insulation three-station isolating switch of making capability with ground according to claim 1, is characterized in that: be sealed with the aobvious transducer (61) of electricity in described cable joint (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410804883.1A CN104576160A (en) | 2014-12-18 | 2014-12-18 | Solid insulating three-position isolating switch with grounding switching off capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410804883.1A CN104576160A (en) | 2014-12-18 | 2014-12-18 | Solid insulating three-position isolating switch with grounding switching off capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104576160A true CN104576160A (en) | 2015-04-29 |
Family
ID=53091970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410804883.1A Pending CN104576160A (en) | 2014-12-18 | 2014-12-18 | Solid insulating three-position isolating switch with grounding switching off capability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104576160A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006767A (en) * | 2015-06-12 | 2015-10-28 | 杭州曙光电器有限公司 | Top-bottom isolation interchanged solid isolating switch structure |
| CN105811293A (en) * | 2016-04-19 | 2016-07-27 | 珠海航天科创实业有限公司 | Solid insulation pole post |
| CN107887807A (en) * | 2017-12-22 | 2018-04-06 | 上海攀森电气设备有限公司 | A kind of disconnecting link formula three-station protected type solid insulation ring main unit |
| CN107993879A (en) * | 2017-12-22 | 2018-05-04 | 上海攀森电气设备有限公司 | A kind of three station protected type solid insulation vacuum switch module of disconnecting link formula |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006767A (en) * | 2015-06-12 | 2015-10-28 | 杭州曙光电器有限公司 | Top-bottom isolation interchanged solid isolating switch structure |
| CN105811293A (en) * | 2016-04-19 | 2016-07-27 | 珠海航天科创实业有限公司 | Solid insulation pole post |
| CN105811293B (en) * | 2016-04-19 | 2018-08-10 | 航天银山电气有限公司 | A kind of solid insulation pole |
| CN107887807A (en) * | 2017-12-22 | 2018-04-06 | 上海攀森电气设备有限公司 | A kind of disconnecting link formula three-station protected type solid insulation ring main unit |
| CN107993879A (en) * | 2017-12-22 | 2018-05-04 | 上海攀森电气设备有限公司 | A kind of three station protected type solid insulation vacuum switch module of disconnecting link formula |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 519060 5 building, No. 6, incense Road, Hong Wan Industrial Zone, Guangdong, Zhuhai Applicant after: Zhuhai Kang Jin electric Limited by Share Ltd Address before: 519060 5 building, No. 6, incense Road, Hong Wan Industrial Zone, Guangdong, Zhuhai Applicant before: Zhuhai Comking Electric Co.,Ltd. |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Desheng Inventor after: Shen Shuer Inventor after: Guo Yangyang Inventor after: Hu Weifeng Inventor before: Wu Guocheng Inventor before: Wei Liutao Inventor before: Hu Weifeng |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |