CN203631405U - Solid insulation direct acting earthing switch - Google Patents
Solid insulation direct acting earthing switch Download PDFInfo
- Publication number
- CN203631405U CN203631405U CN201320825258.6U CN201320825258U CN203631405U CN 203631405 U CN203631405 U CN 203631405U CN 201320825258 U CN201320825258 U CN 201320825258U CN 203631405 U CN203631405 U CN 203631405U
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- China
- Prior art keywords
- solid insulation
- contact
- grounding switch
- switch
- static contact
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- 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.)
- Expired - Lifetime
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- 238000009413 insulation Methods 0.000 title claims abstract description 81
- 239000007787 solid Substances 0.000 title claims abstract description 81
- 230000003068 static effect Effects 0.000 claims abstract description 50
- 239000011810 insulating material Substances 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 238000010891 electric arc Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000722921 Tulipa gesneriana Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a solid insulation direct acting earthing switch comprising an earthing switch static contact, an earthing switch moving contact, a solid insulating material or metal shell and a solid insulation cylinder. The earthing switch static contact is fixed in an inner cavity of the solid insulation cylinder. The earthing switch static contact is provided with an arcing contact and has the earth short circuit current closing capability. The solid insulation cylinder is located on the solid insulating material or metal shell. The earthing switch moving contact is located in the solid insulating material or metal shell. The earthing switch moving contact extends into the solid insulation cylinder so as to be separated from or engaged with the earthing switch static contact. The solid insulation direct acting earthing switch has the advantages that the earthing switch static contact is arranged in the solid insulation cylinder and insulation is formed between the traditional electrified earthing switch static contact and surrounding devices, so that the distance between the electrified devices and other electrified devices needs not to be increased and the size and the overall dimensions of the earthing switch are greatly reduced.
Description
[technical field]
The utility model relates to a kind of electric switch, and especially a kind of fixed insulation for high-tension switch cabinet is moving earthed switch directly.
[background technology]
Earthed switch is in electric wiring, to be used for the device of ground connection, is conventionally installed in switch cubicle.As shown in Figure 1, diagram earthed switch has fixed contact 1, moving contact 2, insulator 3, operating grip 4 to typical earthed switch structure.In the time that fixed contact is communicated with electric loop, moving contact ground connection, insulator plays the electric insulation effect between fixed contact and moving contact, thereby by electric loop insulation against ground.
In the time that switch cubicle need to overhaul, need first earthed switch electric loop is carried out to ground connection operation, operating personnel need pull operating grip, make it to engage with fixed contact after moving contact is rotated to an angle.Existing earthed switch is mostly open type, normal charged fixed contact is normally exposed aerial, this has improved its probability to peripheral conductor electric discharge greatly, also fail safe while having reduced earthed switch operation simultaneously, but for the insulation distance that guarantees that energized conductor is enough, have to strengthen the distance between electrification device and other electrification device, this has just increased volume and the overall dimension of earthed switch greatly, thereby has further affected volume and the manufactured materials cost of high-tension switch cabinet.In addition, in the structure of traditional disconnecting link formula earthed switch, static contact of grounding switch is duck-beak type, moving contact of grounding switch is hilted broadsword or double-pole chip, combination between dynamic/static contact is occlusal contact condition formula, therefore in the time connecting grounded circuit, the electric power that short circuit current produces is larger, causes Liao Gaizhong earthed switch mechanism to close the deficiency that point operating physical force is larger.
[summary of the invention]
Technical problem to be solved in the utility model is to be that the lower switch cubicle production cost that makes of open type and fail safe rises in order to overcome existing earthed switch most of, the shortcoming that volume is larger, a kind of directly moving earthed switch of solid insulation is provided, it has the static contact of grounding switch with other electrification device insulation, therefore the fail safe while having improved earthed switch operation, make high-tension switch cabinet volume-diminished, reduce production costs.
For achieving the above object, the technical scheme that the utility model adopts is as follows:
One at least includes static contact of grounding switch, comprises moving contact of grounding switch, housing, solid insulation cylinder, described static contact of grounding switch is fixed on solid insulation tube inner chamber body, and described static contact of grounding switch, with arcing contact, possesses earth short circuit current making capability; Described solid insulation cylinder is placed in solid insulating material or metal shell, and described moving contact of grounding switch is placed in solid insulating material or metal shell, and moving contact of grounding switch stretches in solid insulation cylinder, to realize and disconnecting or closed with static contact of grounding switch; Described housing is solid insulating material or metal material.
Described housing and solid insulation tube outer surface are coated with ground connection conductive coating.
In the epoxy of described solid insulation cylinder top, be cast with shielding cylinder, described shielding cylinder is fastenedly connected by screw and static contact of grounding switch.
Distance between bottom b point and the solid insulation cylinder top of described shielding cylinder is greater than the distance between end a point and the solid insulation cylinder top of static contact of grounding switch.
Described solid insulation cylinder and shell are provided with the gas passage of connection, and the cavity flow of this gas passage guiding gas in solid insulation cylinder is to the internal cavities of housing.
By multilayer, poroid or groove shape structure is formed by stacking described gas passage.
The bottom of described housing is provided with pressure relief device, and the gas in enclosure interior cavity is let out to ambient atmosphere.
Described solid insulation cylinder inside is provided with the guide ring of guiding moving contact of grounding switch motion, and this guide ring and moving contact of grounding switch outer peripheral face form the relation of sliding friction.
It is plug-in that described static contact of grounding switch and moving contact of grounding switch are in contact with one another mode.
Described above-mentioned static contact of grounding switch is binding quincunx or watchband-shaped contactor formula, and Open Side Down, and end is inlaid with arcing contact, and described moving contact of grounding switch is that circular rod type or tubulose are to be inserted in the opening of static contact of grounding switch.
Compared with prior art, the utility model solid insulation directly moving earthed switch at least has following beneficial effect: static contact of grounding switch is placed in solid insulation cylinder by solid insulation of the present utility model directly moving earthed switch, static contact of grounding switch charged tradition and peripheral devices have been formed to insulation, therefore, do not need to strengthen the distance between electrification device and other electrification device, greatly reduced volume and the overall dimension of earthed switch.
[accompanying drawing explanation]
Fig. 1 is the structural representation of existing disconnecting link formula earthed switch.
Fig. 2 is three-dimensional structure diagram of the present utility model.
Fig. 3 is the cutaway view of the dynamic and static contact assembly structure of the utility model earthed switch.
[embodiment]
Now with embodiment, the utility model is described in detail by reference to the accompanying drawings.
In conjunction with referring to figs. 2 and 3 structural representation of the present utility model.Solid insulation shown in diagram 3 directly moving earthed switch includes static contact of grounding switch 1, moving contact of grounding switch 2, the housing 3 that solid insulating material or metal material are made, solid insulation cylinder 4, shielding cylinder 5, operating grip 6, within this static contact of grounding switch 1 is arranged at solid insulation cylinder 4, with arcing contact, possesses earth short circuit current making capability, described solid insulation cylinder 4 is made up of insulating material epoxy resin, and its effect is that the normal live part static contact of grounding switch in energized circuit 1 and the object around with different potentials are kept to insulation mutually, this solid insulation cylinder 4 is placed on housing 3, and big up and small down cylindrical shape, it is fixing in order to install that its upper and lower are provided with Flange-shaped Parts end, compare little end, its lower end is fixed on housing 3, described solid insulation cylinder 4 inside are provided with the cavity 7 that runs through upper and lower, the internal cavities 8 of these cavity 7 lower ends and housing 3 is interconnected, the main body of described moving contact of grounding switch 2 is contained in the internal cavities 8 of housing 3, the contact jaw at its top extends in solid insulation cylinder 4, described solid insulation cylinder 4 inwalls are provided with one section of polytetrafluorethyleguide guide ring 9 in the position of moving contact of grounding switch described in lower end, in order to guide moving contact of grounding switch 2 to move, this guide ring 9 mates mutually with moving contact of grounding switch 2 peripheral shape, guide ring 9 forms the sliding relation of closing with the outer peripheral face of moving contact of grounding switch 2, thereby reach the object that guiding moving contact of grounding switch 2 moves in solid insulation cylinder cavity 7.
Described housing 3 is coated with ground connection conductive coating with solid insulation cylinder 4 outer surfaces, and described shielding cylinder 5 is cast in solid insulation cylinder 4 top epoxies, and is fastenedly connected by screw and static contact of grounding switch; Distance between bottom b point and solid insulation cylinder 4 tops of described shielding cylinder 5 is greater than the distance between a point and solid insulation cylinder 4 tops of static contact of grounding switch 1 bottom (or end).The electric field strength that shielding cylinder is born static contact of grounding switch surrounding air turns by solid insulating material to be born, and greatly reduces static contact of grounding switch end electric field strength around and the probability of static contact of grounding switch end electric discharge simultaneously.
Described solid insulation cylinder 4 and housing 3 are provided with gas passage 10, this gas passage is symmetrical arranged with moving contact of grounding switch 2, this gas passage 10 guides by the caused gas of short circuit current electric arc and from cavity 7, flows in the internal cavities 8 in housing 3, and the pressure relief device 11 being arranged by housing 3 bottoms discharges to ambient atmosphere.By multilayer, poroid or groove shape structure is formed by stacking described gas passage 10.
Described static contact of grounding switch 1 is binding quincunx or watchband-shaped contactor formula, and Open Side Down, and end is inlaid with arcing contact; Described moving contact of grounding switch 2 is pole shape or tubulose, it in the present embodiment, is cylindrical copper rod, this moving contact of grounding switch 2, it is plug-in that static contact of grounding switch 1 is in contact with one another mode, and moving contact of grounding switch 2 bar-shaped or tubulose inserts or extracts in the binding type tulip contact opening of static contact of grounding switch 1.
In the time that operation solid insulation Direct Action Type earthed switch described in the utility model closes a floodgate, rotating operating handle 6(is shown in Fig. 2), drive moving contact of grounding switch 2 to be moved upward in the cavity 7 in solid insulation cylinder 2 along the guide ring 9 of solid insulation cylinder bottom by the linkage being arranged in housing 3, when the moving contact of grounding switch 2 of bar-shaped or tubulose inserts the plum blossom openend of static contact of grounding switch 1, the huge electric arc of the instantaneous closed produce power of short circuit current in current circuit, the air-flow that this short circuit current electric arc produces drains in the internal cavities 8 in housing by internal gas path 10, then drained in ambient atmosphere by the pressure relief device 11 being arranged on solid housing.Thereby complete after this static contact of grounding switch 1 and the mutual closure of moving contact of grounding switch 2, electric loop is by the function of moving contact of grounding switch ground connection.
Be that the lower switch cubicle production cost that makes of open type and fail safe rises in order to overcome existing earthed switch most of, the shortcoming that volume is larger, the utility model provides directly moving earthed switch of a kind of solid insulation, it has the static contact of grounding switch with other electrification device insulation, therefore the fail safe while having improved earthed switch operation, make high-tension switch cabinet volume-diminished, reduce production costs.
For solving existing disconnecting link formula moving contact of grounding switch, the larger problem of operating physical force when fixed contact divide-shut brake, provides a kind of dynamic/static contact juncture that adopts straight moving plug-in to connect, and has advantages of that operating physical force is less.Secondly, make earthed switch get rid of contingent phase-to phase fault problem, the solution of a kind of employing at solid insulation cylinder surface-coated ground connection conductive coating is provided, make earthed switch avoid occurring phase insulation fault, also fail safe simultaneously that greatly improved earthed switch entirety, in the time of repair and maintenance, directly soft-touch control outer surface.
When having overcome existing static contact of grounding switch charging operation, around electric field strength is higher for fixed contact, easily causes the phenomenon of fixed contact electric discharge.Provide a kind of comprise to be cast in solid insulation cylinder fixed contact around and to be connected by screw fastening shielding cylinder with fixed contact solve the problems referred to above.
Compared with existing disconnecting link formula earthed switch, first solid insulation described in the utility model directly moving earthed switch has been placed in static contact of grounding switch solid insulation cylinder, and static contact of grounding switch charged tradition and peripheral devices have been formed to insulation; Secondly, solid insulation tube outer surface has applied ground connection conductive coating, has further reduced the possibility of phase-to phase fault; Finally, static contact of grounding switch is connected with the shielding cylinder being cast in solid insulation cylinder, optimize electric field strength around when static contact of grounding switch is charged, more reliable and stable while making earthed switch operation, simultaneously, adopt the solid insulating material shell or the metal shell that have applied ground connection conductive coating, more safe and reliable while also making maintenance check.And be provided with pressure relief device, the air pressure inside forming in order to discharge short circuit current electric arc at solid insulation shell or metal shell bottom.
Claims (10)
1. directly moving earthed switch of a solid insulation, it is characterized in that: at least include static contact of grounding switch (1), moving contact of grounding switch (2), housing (3), solid insulation cylinder (4), described static contact of grounding switch (1) is fixed on solid insulation cylinder (4) inner chamber body, and described static contact of grounding switch, with arcing contact, possesses earth short circuit current making capability; Described solid insulation cylinder (4) is placed in housing (3), and described moving contact of grounding switch (2) is placed in housing (3), and moving contact of grounding switch (2) stretches in solid insulation cylinder (4), to realize and disconnecting or closed with static contact of grounding switch (1); Described housing is solid insulating material or metal material.
2. directly moving earthed switch of solid insulation according to claim 1, is characterized in that: described housing (3) is coated with ground connection conductive coating with solid insulation cylinder (4) outer surface.
3. directly moving earthed switch of solid insulation according to claim 1, is characterized in that: in the epoxy of described solid insulation cylinder (4) top, be cast with shielding cylinder (5), described shielding cylinder is fastenedly connected by screw and static contact of grounding switch (1).
4. directly moving earthed switch of solid insulation according to claim 3, is characterized in that: the distance between the bottom b point of described shielding cylinder (5) and solid insulation cylinder (4) top is greater than the distance between end a point and solid insulation cylinder (4) top of static contact of grounding switch (1).
5. directly moving earthed switch of solid insulation according to claim 1, it is characterized in that: described solid insulation cylinder (4) and shell (3) are provided with the gas passage (10) of connection, this gas passage (10) guiding gas flow to the internal cavities (8) of housing (3) from the cavity (7) in solid insulation cylinder (4).
6. directly moving earthed switch of solid insulation according to claim 5, is characterized in that: by multilayer, poroid or groove shape structure is formed by stacking described gas passage (10).
7. directly moving earthed switch of solid insulation according to claim 1, is characterized in that: the bottom of described housing (3) is provided with pressure relief device (11), and the gas in housing (3) internal cavities (8) is let out to ambient atmosphere.
8. directly moving earthed switch of solid insulation according to claim 1, it is characterized in that: described solid insulation cylinder (4) inside is provided with the guide ring (9) of guiding moving contact of grounding switch (2) motion, this guide ring (9) and moving contact of grounding switch (2) outer peripheral face form the relation of sliding friction.
9. according to directly moving earthed switch of the solid insulation described in any one in claim 1 to 8, it is characterized in that: it is plug-in that described static contact of grounding switch and moving contact of grounding switch are in contact with one another mode.
10. directly moving earthed switch of solid insulation according to claim 9, it is characterized in that: described static contact of grounding switch is binding quincunx or watchband-shaped contactor formula, Open Side Down, and end is inlaid with arcing contact, described moving contact of grounding switch is that circular rod type or tubulose are to be inserted in the opening of static contact of grounding switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825258.6U CN203631405U (en) | 2013-12-13 | 2013-12-13 | Solid insulation direct acting earthing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825258.6U CN203631405U (en) | 2013-12-13 | 2013-12-13 | Solid insulation direct acting earthing switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203631405U true CN203631405U (en) | 2014-06-04 |
Family
ID=50817857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320825258.6U Expired - Lifetime CN203631405U (en) | 2013-12-13 | 2013-12-13 | Solid insulation direct acting earthing switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203631405U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465213A (en) * | 2014-12-03 | 2015-03-25 | 中国西电电气股份有限公司 | Gas-insulated switchgear and pressure-operated load switch arc extinguish chamber thereof |
| CN105513845A (en) * | 2015-11-25 | 2016-04-20 | 河南平高电气股份有限公司 | Earthing switch, moving contact thereof and moving conductive rod thereof |
| CN110428996A (en) * | 2019-06-18 | 2019-11-08 | 河南平高电气股份有限公司 | Quick earthing switch and GIS equipment |
| CN110428995A (en) * | 2019-06-18 | 2019-11-08 | 河南平高电气股份有限公司 | GIS equipment and its quick earthing switch |
| CN110610828A (en) * | 2018-06-14 | 2019-12-24 | 平高集团有限公司 | A switch assembly and its static contact assembly |
| CN114914116A (en) * | 2022-06-09 | 2022-08-16 | 华翔翔能科技股份有限公司 | Grounding switch for centrally installed switchgear |
-
2013
- 2013-12-13 CN CN201320825258.6U patent/CN203631405U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465213A (en) * | 2014-12-03 | 2015-03-25 | 中国西电电气股份有限公司 | Gas-insulated switchgear and pressure-operated load switch arc extinguish chamber thereof |
| CN105513845A (en) * | 2015-11-25 | 2016-04-20 | 河南平高电气股份有限公司 | Earthing switch, moving contact thereof and moving conductive rod thereof |
| CN110610828A (en) * | 2018-06-14 | 2019-12-24 | 平高集团有限公司 | A switch assembly and its static contact assembly |
| CN110610828B (en) * | 2018-06-14 | 2021-10-01 | 平高集团有限公司 | A switch assembly and its static contact assembly |
| CN110428996A (en) * | 2019-06-18 | 2019-11-08 | 河南平高电气股份有限公司 | Quick earthing switch and GIS equipment |
| CN110428995A (en) * | 2019-06-18 | 2019-11-08 | 河南平高电气股份有限公司 | GIS equipment and its quick earthing switch |
| CN110428996B (en) * | 2019-06-18 | 2021-02-23 | 河南平高电气股份有限公司 | Quick earthing switch and GIS equipment |
| CN114914116A (en) * | 2022-06-09 | 2022-08-16 | 华翔翔能科技股份有限公司 | Grounding switch for centrally installed switchgear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 7, Tang Xing Road, Xi'an high tech Zone, Shaanxi Province Patentee after: CHINA XD GROUP CO.,LTD. Address before: No. 7, Tang Xing Road, Xi'an high tech Zone, Shaanxi Province Patentee before: CHINA XD Group |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |