CN203826329U - Three-position isolated ground switch device for solid insulation vacuum switch - Google Patents
Three-position isolated ground switch device for solid insulation vacuum switch Download PDFInfo
- Publication number
- CN203826329U CN203826329U CN201420206432.3U CN201420206432U CN203826329U CN 203826329 U CN203826329 U CN 203826329U CN 201420206432 U CN201420206432 U CN 201420206432U CN 203826329 U CN203826329 U CN 203826329U
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- contact
- moving contact
- station isolation
- switch
- vacuum switch
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- 239000007787 solid Substances 0.000 title claims abstract description 22
- 238000009413 insulation Methods 0.000 title claims abstract description 19
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 239000004020 conductor Substances 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims description 52
- 238000007789 sealing Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000003643 water by type Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 abstract 2
- 239000004593 Epoxy Substances 0.000 description 7
- 238000005266 casting Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Abstract
Disclosed is three-position isolated ground switch device for a solid insulation vacuum switch. The three-position isolated ground switch device comprises a three-position isolated ground switch operating end, a three-position isolated ground switch, a busbar interface, an outlet terminal, a vacuum switch, an isolated static contact, a ground contact, an epoxy resin housing and an end cover. The three-position isolated ground switch device is characterized in that the three-position isolated ground switch and the vacuum switch are cast in parallel in the epoxy resin housing, and connected to a conductive contact holder via a moving contact support; the ground contact and the moving contact support are fixedly sealed to the end cover and the epoxy resin housing respectively; and the isolated static contact is cast in the busbar interface and connected to a conductor in the busbar interface. According to the utility model, when all high-voltage components are at operating positions, contours thereof are optimized, no additional shielding net is required to be cast in the epoxy resin housing, the miniaturization of products is easy to implement and the manufacturing process is simplified; the local discharge amount of the products is also very low when all the touchable parts of a human body are grounded; and contour requirements of the moving contact support are lower, the error tolerance of the components are higher, the manufacturing process is simpler, the cost is lower and the service life of the products is improved.
Description
Technical field
The utility model relates to a kind of vacuum switch three station isolation grounding switch modules that are used in high voltage switchgear, particularly a kind of for the vacuum switch three station isolation grounding switch modules on solid insulation fully closed combined electrical apparatus.
Background technology
Ring network power supply is power supply form conventional in distribution system, and ring main unit is the core component of realizing safe power supply, generally divides air insulation, SF6 insulation and solid insulation three classes.Due to air insulation performance limitations, the general volume of air insulation ring main unit is larger, and floor space is large.And because electrification in high voltage parts are directly exposed in air, properties of product are subject to can be directly affected by environment with reliability.SF6 is the extremely strong gases of a kind of greenhouse effect, is about more than 23000 times of CO2, and be extremely difficult for to decompose, and SF6 ring main unit also exists and leaks and seriously reduce the hidden danger of product insulation property in addition.
Solid insulation ring main unit passes through electrification in high voltage parts sealing, in epoxy material, to utilize the electric property of epoxy excellence to realize insulation.Although the dielectric in epoxy inside cavity is air equally, its volume is far smaller than conventional air ring main unit.Because electrification in high voltage parts are all sealed in epoxy cavity, product strengthens greatly to the adaptability of environment.In addition the outer surface of epoxy resin housing coat conduction or semi-conductive layer be grounded, more make product reliability greatly improve.Solid insulation has its unique advantage as new technique, in same design, also brings new challenge, how to realize product miniaturization, obtains lower partial discharge quantity when insulating part is external surface grounded.
Solid insulation ring main unit primary side element mainly comprises vacuum switch, earthed switch, and isolating switch,, there is sleeve pipe/interface in entrance bushing/interface, fuse etc.And by vacuum switch, earthed switch and/or isolating switch and to cast in a module be the main flow design in market.In at present design, earthed switch and isolating switch have and make disconnecting link formula three-station, and also useful vacuum switch is realized isolation and grounding function.
Fixedly disconnecting link need to be used screw or pin, concentrates, thereby reduce the voltage endurance capability of product because the projection of screw or pin can cause electric field.Particularly, for the design of insulating part external ground, be unfavorable for product miniaturization.This class design gauze screen of also need to casting in epoxy material improves electric field, and manufacturing process is complicated.With vacuum switch, can effectively control electric field, reduce partial discharge quantity, but vacuum switch cost be high, vacuum switch is not also widely accepted as isolating switch owing to the factor such as leaking and fracture is invisible in addition.
Summary of the invention
For the defect of above-mentioned prior art, the design's object is to provide simple, the inner field intensity of a kind of manufacture craft evenly controlled, the miniaturization solid isolated vacuum switch three station isolation grounding switch devices that insulating part is external surface grounded.
To achieve these goals, the design's technical scheme is as follows:
Solid isolated vacuum switch three station isolation grounding switch devices, by three station isolation grounding switch operating sides, three station isolation grounding switchs, bus interface, outlet terminal, vacuum switch, isolation fixed contact, grounding contact, epoxy resin housing and end cap main element form; Water parallel with vacuum switch of described three station isolation grounding switchs casts from epoxy resin housing, and supported with conductive contact finger seat and be connected by moving contact; Moving contact supports sealing in epoxy resin housing; Isolation fixed contact waters and casts from bus interface and be connected with bus interface inner conductor.
Described epoxy resin housing has the opening coordinating with end cap in upper end, lower end has the interface coordinating with bus interface.
Described bus interface is fixedly linked by bolt and epoxy resin housing, and both mating interfaces can be taper, can be not limited to taper, can be other bayonet socket shapes, and this kind of design can guarantee accuracy and the sealing of location.
In described conductive contact finger seat, be processed with the groove that conductive contact finger is installed.
Described conductive contact finger seat is arranged in moving contact support by the mode of rear assembling;
Between described conductive contact finger seat supports with moving contact, be removable being fixedly connected with; Can be to be threaded, but be not limited to be threaded; As being arranged on moving contact by screw, support.
Described moving contact supports to water together with vacuum switch and casts from epoxy resin housing, between by conductive contact finger seat, be connected with conductive contact finger.
Three described one end, station isolation grounding switch operating side are fixed together by the removable mode that is fixedly connected with three station operating mechanism output shafts, the removable mode that is fixedly connected with can be that pin connects, the other end is fixed together by the removable mode that is fixedly connected with insulation drive rod through grounding contact, and the removable mode that is fixedly connected with can be to be threaded; Three station isolation grounding switch operating sides and grounding contact seal with sealing ring.
Three described station operating mechanisms are prior art, can select motor-driven gear transmission to form.By motor positive and inverse, drive the three positive and negative rotations in station isolation grounding switch operating side, the diverse location of realizing switch switches.
Described grounding contact both sides are provided with bearing, for supporting three station isolation grounding switch operating sides.
Three described station isolation grounding switchs are moved up and down and are realized the closing of three station isolation grounding switchs, isolation and ground connection by moving contact.
Described moving contact is fixedly connected with drive nut.
Described moving contact supports inwall and is provided with fixing guide pad, for limiting moving contact, rotates.
Conductive contact finger is equipped with at described moving contact two ends, for the isolation fixed contact of conducting when closing position and moving contact, supports, and when earthing position, conducting grounding contact and moving contact support.
Described vacuum switch lower end is cast with outlet terminal, and for connecting outlet, upper end is connected with insulated tension pole by screw thread.
Described insulated tension pole and bellows upper end are tightly connected, and bellows lower end is sealingly fastened on end cap, realize the sealing of insulated tension pole interface and epoxy resin shell cavity.
On described epoxy resin housing and the contact-making surface of end cap, there is seal groove, for packing sealing ring into, reach the sealing between epoxy resin housing and end cap.
Described epoxy resin housing left side has observation window, and for judging the service position of moving contact, epoxy resin housing inner side is cast with full skirt.
Described moving contact inside is provided with position indicator and back-moving spring, and the moving contact total holding position of back-moving spring direction board when ungrounded position is given prominence to outside moving contact.When moving contact is in isolated location, operator can see position indicator by observation window.When moving contact moves to earthing position, grounding contact will promote position indicator compression reseting spring.This method for indicating position is not increasing under the prerequisite of contact head insulated distance, does not increase under the prerequisite of product size, and clearer and more definite location identification sign can be provided.
This programme design has the following advantages:
1, all high voltage components when service position outside table skeleton all pass through optimization, the extra gauze screen of need to not casting in epoxy resin housing, product electric field is even, insulation distance required under identical withstand voltage is shorter, is easy to realize product miniaturization.Due to without casting gauze screen, simplified manufacturing process in addition.
2, under whole module operating state charged parts around air gap can set according to designing requirement, do not exist internal field to concentrate, though meet human body can touch position all under the condition of ground connection product partial discharge quantity also very low.
3, in the utility model, moving contact supports can do less, more save material. because supporting to water, moving contact casts from epoxy resin housing, the relative air of its surperficial electric field value allowable will improve greatly, so moving contact supports appearance profile, require lower, part admissible error is higher, manufacturing process is simpler, and cost is lower.
4, in the utility model, conductive contact finger seat is assemblied in moving contact support by dismountable mode, mode than direct pouring in epoxy resin housing, has avoided owing to forgetting and packing the risk that conductive contact finger causes whole product rejection into before conductive contact finger damage or casting.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a part of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the utility model structural principle composition.
Embodiment
As shown in Figure 1, a kind of solid isolated vacuum switch three station isolation grounding switch devices, comprise three station isolation grounding switch operating sides 1, three station isolation grounding switchs 3, bus interface 11, outlet terminal 13, vacuum switch 16, epoxy resin housing 18 and end cap 20.Described three station isolation grounding switchs 2 and vacuum switch 16 horizontal arrangement are in same air chamber, and by moving contact, support 6 and be connected with conductive contact finger seat 15, and conductive contact finger seat 15 inside are processed with the groove that conductive contact finger is installed; Grounding contact 2 and moving contact support 6 other sealings in end cap 20 and epoxy resin housing 18; Isolation fixed contact 12 waters and casts from bus interface 11 and be connected with bus interface 11 inner conductors.
Three 1 one end, station isolation grounding switch operating sides are connected with three station operating mechanisms, and the other end is fixed together through grounding contact 2 and insulation drive rod 4.Three station isolation grounding switch operating sides 1 also can be made of one with insulation drive rod 4.Three station isolation grounding switch operating sides 1 seal by sealing ring with grounding contact 2.Grounding contact 2 both sides are provided with bearing, for supporting three station isolation grounding switch operating sides 1.
The grounding contact 2 of three station isolation grounding switchs 3 and moving contact support 6 sealings are in end cap 20 and epoxy resin housing 18 respectively, and isolation fixed contact 12 waters and casts from bus interface 11 and be connected with bus interface 11 inner conductors; Bus interface 11 is fixedly linked by bolt and epoxy resin housing 18; Both mating interfaces are done tapered, certainly other bayonet socket shapes also can, this kind of design can guarantee accuracy and the sealing of location.
Moving contact supports on 6 sidewalls and has processed two perforates, and before casting, guide pad 7 is pressed into perforate and casts in epoxy resin housing 18.Moving contact 9 supports in 6 and moves up and down and realize closing of three station isolation grounding switchs at moving contact, isolation and ground connection, its motion implementation is: three station operating mechanisms drive insulation drive rods 4 to rotate by three station isolation grounding switch operating sides 1, and the drive nut 10 that is fixed together of drive and moving contact 9.Because guide pad 7 can rotate by restriction moving contact 9, drive nut 10 and moving contact 9 can only be moved up and down.Conductive contact finger 8 is equipped with at moving contact 9 two ends, for the circuit between conducting moving contact 9 and other parts.
Vacuum switch 14 waters and casts from epoxy resin housing together with moving contact support 6, between them, by conductive contact finger seat 15 and conductive contact finger, connects.Vacuum switch 14 lower ends are cast with for connecting the outlet terminal 13 of outlet, and upper end is connected with insulated tension pole 17 by screw thread.Insulated tension pole 17 is tightly connected with bellows 21 upper ends, and bellows 21 lower ends are sealingly fastened on end cap 20, realize the sealing of insulated tension pole 17 interfaces and epoxy resin housing 18 cavitys.On the contact-making surface of epoxy resin housing 18 and end cap 20, there is seal groove 19, for packing sealing ring into, realize the sealing between the two.After assembling, all electrification in high voltage parts all can be reached the degree of protection of IP68 by epoxy sealing, and module can normally be moved under water.The outer surface of epoxy material scribble conduction or semi-conductive layer for ground connection, so just guaranteed that the territory, access area of whole module is all in low potential.
Epoxy resin housing 18 left sides have observation window 5, for judging the service position of moving contact 9, have improved processing safety.Its feasible implementation is: in moving contact 9 inside, position indicator 22 and back-moving spring 23 are installed, the moving contact 9 total holding position of back-moving spring direction board 22 when ungrounded position is given prominence to outside moving contact 9.When moving contact 9 is in isolated location, operator can see position indicator 22 by observation window 5.When moving contact 9 moves to earthing position, grounding contact 2 will promote position indicator 22 compression reseting springs.This method for indicating position is not increasing under the prerequisite of contact head insulated distance, does not increase under the prerequisite of product size, and clearer and more definite location identification sign can be provided.In order to meet creepage distance requirement in the confined space, epoxy resin housing 18 inner sides are cast with full skirt.
Claims (11)
1. solid isolated vacuum switch three station isolation grounding switch devices, by three station isolation grounding switch operating sides, three station isolation grounding switchs, bus interface, outlet terminal, vacuum switch, isolation fixed contact, grounding contact, epoxy resin housing and end cap form; It is characterized in that: water parallel with vacuum switch of described three station isolation grounding switchs casts from epoxy resin housing, and supported with conductive contact finger seat and be connected by moving contact; Described grounding contact and moving contact support difference sealing in end cap and epoxy resin housing; Described isolation fixed contact waters and casts from bus interface and be connected with bus interface inner conductor.
2. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1, is characterized in that: described epoxy resin housing has the opening coordinating with end cap in upper end, lower end has the interface coordinating with bus interface.
3. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1 and 2, is characterized in that: described bus interface is fixedly linked by bolt and epoxy resin housing, and both mating interfaces can be taper.
4. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1, is characterized in that: described conductive contact finger seat is arranged on moving contact support above by the mode of rear assembling, and mounting means is removable being fixedly connected with.
5. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1, it is characterized in that: three described one end, station isolation grounding switch operating side are fixed together by the removable mode that is fixedly connected with three station operating mechanism output shafts, the other end is fixed together by the removable mode that is fixedly connected with insulation drive rod through grounding contact; Between three station isolation grounding switch operating sides and grounding contact, with sealing ring, seal.
6. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1, is characterized in that: described grounding contact both sides are provided with bearing, support three station isolation grounding switch operating sides.
7. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1, is characterized in that: described moving contact supports inwall and is provided with fixing guide pad, for limiting moving contact, rotate.
8. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1, is characterized in that: between described conductive contact finger seat supports with moving contact, be removable being fixedly connected with.
9. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1, is characterized in that: in described conductive contact finger seat, be processed with the groove that conductive contact finger is installed.
10. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1, is characterized in that: conductive contact finger is equipped with at described moving contact two ends.
11. solid isolated vacuum switch three station isolation grounding switch devices according to claim 1, is characterized in that: described moving contact inside is provided with position indicator and back-moving spring; The moving contact total holding position of back-moving spring direction board when ungrounded position is given prominence to outside moving contact; When moving contact is in isolated location, operator can see position indicator by observation window; When moving contact moves to earthing position, grounding contact will promote position indicator compression reseting spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420206432.3U CN203826329U (en) | 2014-04-25 | 2014-04-25 | Three-position isolated ground switch device for solid insulation vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420206432.3U CN203826329U (en) | 2014-04-25 | 2014-04-25 | Three-position isolated ground switch device for solid insulation vacuum switch |
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| Publication Number | Publication Date |
|---|---|
| CN203826329U true CN203826329U (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420206432.3U Expired - Lifetime CN203826329U (en) | 2014-04-25 | 2014-04-25 | Three-position isolated ground switch device for solid insulation vacuum switch |
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| Country | Link |
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| CN (1) | CN203826329U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915301A (en) * | 2014-04-25 | 2014-07-09 | 协励行(厦门)电气有限公司 | Novel solid insulation vacuum switch three-position isolation earthing switch device |
| CN103928274A (en) * | 2014-04-25 | 2014-07-16 | 协励行(厦门)电气有限公司 | Solid insulation vacuum switch three-position isolation earth switch module |
-
2014
- 2014-04-25 CN CN201420206432.3U patent/CN203826329U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915301A (en) * | 2014-04-25 | 2014-07-09 | 协励行(厦门)电气有限公司 | Novel solid insulation vacuum switch three-position isolation earthing switch device |
| CN103928274A (en) * | 2014-04-25 | 2014-07-16 | 协励行(厦门)电气有限公司 | Solid insulation vacuum switch three-position isolation earth switch module |
| CN103915301B (en) * | 2014-04-25 | 2017-10-10 | 爱启（厦门）电气技术有限公司 | Solid insulation vacuum switch three-station isolating grounding switch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160322 Address after: 361006 Mike building, torch high tech Industrial Development Zone, Huli District, Fujian, Xiamen, China Patentee after: AI Kai (Xiamen) Electric Technology Co., Ltd. Address before: 361006 Mike building, torch high tech Industrial Development Zone, Huli District, Fujian, Xiamen, China Patentee before: SPEED FAIR (XIAMEN) CO., LTD. |