CN203910735U - Three-station isolating grounding switch module of solid isolating vacuum switch - Google Patents
Three-station isolating grounding switch module of solid isolating vacuum switch Download PDFInfo
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- CN203910735U CN203910735U CN201420206505.9U CN201420206505U CN203910735U CN 203910735 U CN203910735 U CN 203910735U CN 201420206505 U CN201420206505 U CN 201420206505U CN 203910735 U CN203910735 U CN 203910735U
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- vacuum switch
- grounding
- station isolation
- switch
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- 239000007787 solid Substances 0.000 title claims abstract description 27
- 239000003822 epoxy resin Substances 0.000 claims abstract description 29
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 29
- 238000002955 isolation Methods 0.000 claims description 58
- 238000009413 insulation Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims description 2
- 230000005684 electric field Effects 0.000 abstract description 6
- 238000005266 casting Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract 2
- 239000004593 Epoxy Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000004020 conductor 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
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- 238000005516 engineering process Methods 0.000 description 1
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- 238000005457 optimization Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
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Abstract
A three-station isolating grounding switch module of a solid isolating vacuum switch is composed of the components of: a three-station isolating grounding switch operation end, a three-station isolating grounding switch, a bus interface, a wire outlet terminal, a vacuum switch, an isolating static contact, a grounding contact, an epoxy resin housing and an end cap. The three-station isolating grounding switch module of the solid isolating vacuum switch is characterized in that: the three-station isolating grounding switch and the vacuum switch are casted in the epoxy resin housing parallelly, and furthermore are connected with a conductive contact finger through a moving contact support; the grounding contact and the isolating static contact are respectively sealed in the end cap and the epoxy resin housing fixedly. The three-station isolating grounding switch module of the solid isolating vacuum switch is advantageous in that: the outer contour of a high-voltage component is optimized; casting of an additional shielding net in the epoxy resin housing is not required; high uniformity of a product electric field is realized; shorter required insulating distance under same bearing voltage is obtained; realization of product miniaturization is facilitated; manufacturing process is simplified because casting of the shielding net is not required; and a requirement for low partial discharge amount of the product on condition that touchable parts of human body are grounded is satisfied.
Description
Technical field
The utility model relates to a kind of circuit breaker three station isolation grounding switch modules that are used in high voltage switchgear, particularly a kind of for the circuit breaker 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 is extremely difficult for decomposing, 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 be air equally at the dielectric of epoxy inside cavity, 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.
Fixing disconnecting link need to be used screw or pin, because can causing electric field, the projection of screw or pin concentrates, thus the voltage endurance capability of reduction product.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, manufacturing process complexity.Can effectively control electric field with vacuum switch, 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 modules that insulating part is external surface grounded.
To achieve these goals, the design's technical scheme is as follows:
A kind of solid isolated vacuum switch three station isolation grounding switch modules, 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 composition; 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 isolation fixed contact difference sealing are in end cap and epoxy resin housing.
Described three one end, station isolation grounding switch operating side and three station operating mechanism output shafts are fixed together by (being not limited to) such as pins, and the other end is fixed together by screw thread (being not limited to) through grounding contact and insulation drive rod; Three station isolation grounding switch operating sides and grounding contact seal with sealing ring.
Described grounding contact both sides are provided with bearing, for supporting three station isolation grounding switch operating sides.
Described insulation drive rod coordinates formation screw-nut structure with drive nut.
Described drive nut is fixedly connected with moving contact; Insulation drive rod drives drive nut and moving contact to move up and down to realize the closing of three station isolation grounding switchs, isolation and ground connection.
Three described station operating mechanisms are prior art, can select motor-driven gear transmission composition, drive the three positive and negative rotations in station isolation grounding switch operating side by motor positive and inverse, and the diverse location of realizing switch switches.
Described moving contact supports on the sidewall of two ends and is fixed with guide pad; Three described station isolation grounding switchs support inwall by moving contact and are provided with fixing guide pad, rotate for limiting moving contact.
Described moving contact is fixedly connected with drive nut.
Conductive contact finger is equipped with at described moving contact two ends; Support for the isolation fixed contact of conducting in the time closing position and moving contact, in the time of earthing position, conducting grounding contact and moving contact support.
Described grounding contact and isolation fixed contact difference sealing are in end cap and epoxy resin housing.
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 removable mode that is fixedly connected with.
Removable being fixedly connected with between described conductive contact finger seat and moving contact support can be to be threaded, to sell connection, elastic deformation connection, snap close connection, inserting mode.
Described moving contact supports distance between epoxy resin housing and is not less than 2mm.
Described moving contact stayed surface can be coated with last layer insulation or semi-conductive layer; Can improve moving contact stayed surface electric field, improve particularly lightning impulse breakdown voltage of puncture voltage.
Described vacuum switch waters and casts from epoxy resin housing together with conductive contact finger seat, between connect by conductive contact finger.
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; The moving contact total holding position of back-moving spring direction board in the time of ungrounded position is given prominence to outside moving contact.When moving contact is in isolated location, operator can see position indicator by observation window; In the time that 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 mark can be provided.
The utility model has the following advantages:
1, all high voltage components in the time of 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, simplify 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.
Brief description of the drawings
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 that the utility model structure is implemented principle composition.
Embodiment
As shown in Figure 1, a kind of solid isolated vacuum switch three station isolation grounding switch modules, 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.Three station isolation grounding switchs 2 and vacuum switch 16 horizontal arrangement are in same air chamber, and support 6 by moving contact and be connected with conductive contact finger seat 15, and conductive contact finger seat 15 is arranged on moving contact and is supported on 6 by the removable mode that is fixedly connected with.Removable being fixedly connected with between conductive contact finger seat and moving contact support can be to be threaded, to sell connection, elastic deformation connection, snap close connection, inserting mode.
Select in the present embodiment: conductive contact finger seat 15 is threaded connection mode and is arranged in moving contact support 6, and conductive contact finger seat 15 inside are processed with the groove that conductive contact finger is installed.
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.
Sealing is in end cap 20 and epoxy resin housing 18 respectively for the grounding contact 2 of three station isolation grounding switchs 3 and isolation fixed contact 12, and moving contact supports 6 modes by rear assembling and is connected with conductive contact finger seat 15.Moving contact 9 moves up and down and realizes closing of three station isolation grounding switchs, isolation and ground connection work, 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.Can rotate by restriction moving contact 9 owing to supporting the fixing guide pad of 6 inwalls 7 at moving contact, 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.
Water and cast from epoxy resin housing together with vacuum switch 14 for supporting the 6 contacts of vacuum switch seats 15 that are connected with moving contact, between them, connect by conductive contact finger.Vacuum switch 14 lower ends are cast with the outlet terminal 13 for connecting 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, realize the sealing between the two for packing sealing ring into.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 ensured 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 in the time of 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.In the time that moving contact 9 moves to earthing position, grounding contact 2 will promote position indicator 22 compression reseting springs 23.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 mark can be provided.
Under different service conditions, because conductor insulating material is around by electric polarization, cause insulating material to present electrification phenomenon, the radius of this live zone is creepage distance.In order to meet creepage distance requirement in the confined space, epoxy resin housing 18 inner sides are cast with full skirt.
Claims (14)
1. solid isolated vacuum switch three station isolation grounding switch modules, 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 composition; 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 isolation fixed contact difference sealing are in end cap and epoxy resin housing.
2. solid isolated vacuum switch three station isolation grounding switch modules according to claim 1, it is characterized in that: described three one end, station isolation grounding switch operating side and three station operating mechanism output shafts are fixed together by pin, the other end is fixed together by screw thread through grounding contact and insulation drive rod; Between three station isolation grounding switch operating sides and grounding contact, seal with sealing ring.
3. solid isolated vacuum switch three station isolation grounding switch modules according to claim 2, is characterized in that: described grounding contact both sides are provided with bearing, support three station isolation grounding switch operating sides.
4. solid isolated vacuum switch three station isolation grounding switch modules according to claim 2, is characterized in that: described insulation drive rod coordinates formation screw-nut structure with drive nut.
5. solid isolated vacuum switch three station isolation grounding switch modules according to claim 4, is characterized in that: described drive nut is fixedly connected with moving contact; Insulation drive rod drives drive nut and moving contact to move up and down to realize the closing of three station isolation grounding switchs, isolation and ground connection.
6. solid isolated vacuum switch three station isolation grounding switch modules according to claim 1, is characterized in that: described moving contact supports on the sidewall of two ends and is fixed with guide pad; Three described station isolation grounding switchs support inwall by moving contact and are provided with fixing guide pad, rotate for limiting moving contact.
7. according to the solid isolated vacuum switch three station isolation grounding switch modules described in claim 1 or 6, it is characterized in that: conductive contact finger is equipped with at described moving contact two ends.
8. solid isolated vacuum switch three station isolation grounding switch modules 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.
9. solid isolated vacuum switch three station isolation grounding switch modules according to claim 1, is characterized in that: described conductive contact finger seat is arranged in moving contact support by the removable mode that is fixedly connected with.
10. solid isolated vacuum switch three station isolation grounding switch modules according to claim 9, it is characterized in that: removable being fixedly connected with between described conductive contact finger seat and moving contact support, removable being fixedly connected with is to be threaded or to sell to connect or elastic deformation connection or snap close connection or inserting mode.
11. according to the solid isolated vacuum switch three station isolation grounding switch modules described in claim 1 or 10, it is characterized in that: described moving contact supports distance between epoxy resin housing and is not less than 2mm.
12. solid isolated vacuum switch three station isolation grounding switch modules according to claim 1, is characterized in that: moving contact stayed surface can be coated with last layer insulation or semi-conductive layer.
13. solid isolated vacuum switch three station isolation grounding switch modules according to claim 1, is characterized in that: described vacuum switch waters and casts from epoxy resin housing together with conductive contact finger seat, between connect by conductive contact finger.
14. according to the solid isolated vacuum switch three station isolation grounding switch modules described in claim 1 or 10, it 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 in the time of ungrounded position is given prominence to outside moving contact; When moving contact is in isolated location, operator can see position indicator by observation window; In the time that 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 |
|---|---|---|---|
| CN201420206505.9U CN203910735U (en) | 2014-04-25 | 2014-04-25 | Three-station isolating grounding switch module of solid isolating vacuum switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420206505.9U CN203910735U (en) | 2014-04-25 | 2014-04-25 | Three-station isolating grounding switch module of solid isolating vacuum switch |
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| CN203910735U true CN203910735U (en) | 2014-10-29 |
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| CN201420206505.9U Expired - Fee Related CN203910735U (en) | 2014-04-25 | 2014-04-25 | Three-station isolating grounding switch module of solid isolating vacuum switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928275A (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 CN201420206505.9U patent/CN203910735U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928275A (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 |
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| Date | Code | Title | Description |
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| 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: I-SEE R&D INTERNATIONAL Co.,Ltd. Address before: 361006 Mike building, torch high tech Industrial Development Zone, Huli District, Fujian, Xiamen, China Patentee before: XIELIXING (XIAMEN) ELECTRIC CO.,LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |