CN103915282B - Novel solid insulation vacuum switch three-station isolating grounding switch module - Google Patents
Novel solid insulation vacuum switch three-station isolating grounding switch module Download PDFInfo
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- CN103915282B CN103915282B CN201410170359.3A CN201410170359A CN103915282B CN 103915282 B CN103915282 B CN 103915282B CN 201410170359 A CN201410170359 A CN 201410170359A CN 103915282 B CN103915282 B CN 103915282B
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Abstract
A kind of novel solid insulation vacuum switch three-station isolating grounding switch module, by three-station isolating grounding switch operating side, three-station isolating grounding switch, bus interface, outlet terminal, vacuum switch, isolation static contact, grounding contact, epoxy resin housing and end cap composition；It is characterized in that: water parallel with vacuum switch of described three-station isolating grounding switch casts from epoxy resin housing, and be connected with conductive contact finger seat by moving contact support;Described grounding contact is installed on end cap or epoxy resin housing by the way of rear assembling;Isolation static contact sealing is in epoxy resin housing.The high voltage component of the present invention outer table skeleton when operating position all passes through optimization, it is not necessary to extra gauze screen of casting in epoxy resin housing, it is easy to accomplish product miniaturization, simplifies manufacturing process；There is not internal field to concentrate, even if product partial discharge quantity is the lowest under conditions of meeting the accessible position of human body all ground connection；Reduce the risk of whole product rejection.
Description
Technical field
The present invention relates to a kind of vacuum switch three-station isolating grounding switch module being used in high-tension switch gear, a kind of novel solid insulation vacuum switch three-station isolating grounding switch module on solid insulation fully closed combined electrical apparatus.
Background technology
Ring network power supply is power-supplying forms conventional in distribution system, and ring main unit is the core component realizing safe power supply, typically divides air insulation, SF6 insulation and solid insulation three class.Owing to air insulation performance limits, the general volume of air insulation ring main unit is relatively big, and floor space is big.And owing to high-voltage live parts is directly exposed in air, properties of product are subject to and reliability can be the most affected by environment.SF6 is more than 23000 times of the gas that a kind of greenhouse effect is extremely strong, about CO2, and pole is not easily decomposed, and additionally SF6 ring main unit there is also leakage and seriously reduces the hidden danger of product insulating properties.
Solid insulation ring main unit by by high-voltage live parts sealing in epoxy material, the electric property utilizing epoxy excellent realizes insulation.Although the dielectric in epoxy inside cavity is air equally, but its volume is far smaller than conventional air ring main unit.Owing to high-voltage live parts is all sealed in epoxy cavity, the adaptability of environment is greatly enhanced by product.Additionally the outer surface at epoxy resin housing coats conduction or semi-conductive layer is grounded, more makes product reliability be greatly improved.Solid insulation has the advantage of its uniqueness as new technique, and same design is also brought new challenge, the most how to realize product miniaturization, is obtaining relatively low partial discharge quantity while insulating part is external surface grounded.
Solid insulation ring main unit primary side element mainly includes vacuum switch, earthed switch, disconnecting switch, entrance bushing/interface, sleeve pipe/interface, fuse etc. occurs.And by vacuum switch, earthed switch and/or disconnecting switch with to cast in a module be the mainstay in market.In at present design, earthed switch and disconnecting switch have and make disconnecting link formula three-station, and the most useful vacuum switch realizes isolation and grounding function.
Fixing disconnecting link needs to use screw or pin, owing to the projection of screw or pin can cause electric field to concentrate, thus reduces the voltage endurance capability of product.Especially for the design of insulating part external ground, it is unfavorable for product miniaturization.This kind of design gauze screen that also needs to cast in epoxy material is to improve electric field, and manufacturing process is complicated.Can efficiently control electric field with vacuum switch, reduce partial discharge quantity, but vacuum switch cost is high, additionally vacuum switch is not the most widely accepted as disconnecting switch owing to the factor such as leaking and fracture is invisible.
Summary of the invention
For the defect of above-mentioned prior art, the purpose of the design is to provide a kind of processing technology field intensity uniform, controllable simple, internal, the miniaturization solid insulation vacuum switch three-station isolating grounding switch module that insulating part is external surface grounded.
To achieve these goals, the technical scheme of the design is as follows:
A kind of novel solid insulation vacuum switch three-station isolating grounding switch module solid insulation vacuum switch three-station isolating grounding switch module, by three-station isolating grounding switch operating side, three-station isolating grounding switch, bus interface, outlet terminal, vacuum switch, isolate static contact, grounding contact, epoxy resin housing and end cap main element composition；Water parallel with vacuum switch of described three-station isolating grounding switch casts from epoxy resin housing, and is connected with conductive contact finger seat by moving contact support；Described grounding contact is installed on end cap or epoxy resin housing by the way of rear assembling；Isolation static contact sealing is in epoxy resin housing.
Described one end, three-station isolating grounding switch operating side is fixed together by (being not limited to) such as pins with three station operating mechanism output shafts, and the other end is fixed together by screw thread (being not limited to) through grounding contact with insulation drive rod；Three-station isolating grounding switch operating side seals with grounding contact sealing ring.
Described grounding contact both sides are provided with bearing, are used for supporting three-station isolating grounding switch operating side.
Described insulation drive rod forms screw-nut structure with driving nut screw connection.
Described driving nut is fixing with moving contact to be connected；Insulation drive rod drives and drives nut and moving contact to move up and down to realize the closing of three-station isolating grounding switch, isolate and ground connection.
Three described station operating mechanisms are prior art, optional motor-driven gear transmission composition, drive the positive and negative rotation in three-station isolating grounding switch operating side by motor positive and inverse, it is achieved the diverse location switching of switch.
Described three-station isolating grounding switch is supported by moving contact and is fixed with guide pad on the sidewall of two ends, is used for limiting moving contact and rotates.
Described moving contact is fixing with driving nut to be connected.
Described moving contact two ends are equipped with conductive contact finger；Support for conducting isolation static contact and moving contact when closing position, turn on grounding contact when earthing position and moving contact supports.
Mode of assembling after described grounding contact is removable fixing connected mode；Assemble mode after described grounding contact to be fixed by screw.
Described conductive contact finger seat is machined with the groove installing conductive contact finger.
Described conductive contact finger seat is arranged on moving contact by removable fixing connected mode and supports.
Described conductive contact finger seat and moving contact support between removable fixing be connected, can be threaded, pin connections, elastic deformation connection, snap close connection, inserting mode.
Described moving contact supports the spacing with epoxy resin housing not less than 2mm.
Described moving contact stayed surface can be coated with last layer insulation or semi-conductive layer；Moving contact stayed surface electric field can be improved, improve breakdown voltage particularly lightning impulse breakdown voltage.
Described vacuum switch waters together with conductive contact finger seat and casts from epoxy resin housing, between connected by conductive contact finger.
Described vacuum switch lower end is cast with outlet terminal, is used for connecting outlet, and upper end is connected with insulated tension pole by screw thread.
Described insulated tension pole is tightly connected with corrugated tube upper end, and corrugated tube lower end is sealingly fastened on end cap, it is achieved insulated tension pole interface and the sealing of epoxy resin shell cavity.
Described epoxy resin housing has seal groove on the contact surface of end cap, is used for loading sealing ring, reaches the sealing between epoxy resin housing and end cap.
Having observation window on the left of described epoxy resin housing, for judging the operating position of moving contact, epoxy resin case inside is cast with full skirt.
Described moving contact is internally installed position indicator and back-moving spring；When moving contact is in ungrounded position, back-moving spring total holding position direction board highlights outside moving contact；When moving contact is in isolated location, and operator can see position indicator by observation window；When moving contact moves to earthing position, grounding contact is by pushing position direction board compression reseting spring.This method for indicating position is not on the premise of increasing contact head insulated distance, on the premise of not increasing product size, it is provided that location identification mark definitely.
The present invention has the following advantages:
1, all high voltage components outer table skeleton when operating position all passes through optimization, it is not necessary at epoxy resin
The gauze screen that in housing, casting is extra, product electric fields uniform, insulation distance required under identical withstanding voltage is shorter, it is easy to accomplish product miniaturization.Additionally, due to without gauze screen of casting, simplify manufacturing process.
2, parts surrounding air gap charged under whole module duty can set according to design requirement, there is not internal field and concentrates, even if product partial discharge quantity is the lowest under conditions of meeting the accessible position of human body all ground connection.
3, in the design, conductive contact finger seat is assemblied in moving contact support by dismountable mode, compared to direct pouring mode in epoxy resin housing, it is to avoid damage due to conductive contact finger or forget to load conductive contact finger before casting and cause the risk of whole product rejection.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is that present configuration implements principle composition
Detailed description of the invention
As it is shown in figure 1, a kind of novel solid insulation vacuum switch three-station isolating grounding switch module, including three-station isolating grounding switch operating side 1, three-station isolating grounding switch 3, bus interface 11, outlet terminal 13, vacuum switch 16, epoxy resin housing 18 and end cap 20.Three-station isolating grounding switch 2 and vacuum switch 16 is horizontally disposed is in same air chamber, and support 6 by moving contact and be connected with conductive contact finger seat 15, conductive contact finger seat 15 is arranged in moving contact support 6 by removable fixing connected mode.Conductive contact finger seat and moving contact support between removable fixing be connected, can be threaded, pin connections, elastic deformation connection, snap close connection, inserting mode.
Selecting in the present embodiment: conductive contact finger seat 15 is threaded connection mode and is arranged in moving contact support 6, conductive contact finger seat 15 is internal is machined with the groove installing conductive contact finger.
One end, three-station isolating grounding switch operating side 1 is connected with three station operating mechanisms, and the other end is fixed together through grounding contact 2 with insulation drive rod 4.Three-station isolating grounding switch operating side 1 can also be made of one with insulation drive rod 4.Three-station isolating grounding switch operating side 1 is sealed by sealing ring with grounding contact 2.Grounding contact 2 both sides are provided with bearing, are used for supporting three-station isolating grounding switch operating side 1.
The grounding contact 2 of three-station isolating grounding switch 3 is installed on end cap 20 or epoxy resin housing 18 by the way of rear assembling.Isolation static contact 12 sealing is in epoxy resin housing 18.Moving contact supports 6 and is connected with conductive contact finger seat 15 by the way of rear assembling.Moving contact 9 moves up and down and realizes closing of three-station isolating grounding switch, isolation and ground connection work, its motion implementation is: three station operating mechanisms drive insulation drive rod 4 to rotate by three-station isolating grounding switch operating side 1, and drive the driving nut 10 being fixed together with moving contact 9.Moving contact 9 can be limited rotate owing to supporting the fixing guide pad 7 of 6 inwalls at moving contact so that drive nut 10 and moving contact 9 to move up and down.Moving contact 9 two ends are equipped with conductive contact finger 8, for turning on the circuit between moving contact 9 and other parts.
Cast from epoxy resin housing for watering together with vacuum switch 14 with the contacts of vacuum switch seats 15 of moving contact support 6 connection, connected by conductive contact finger between them.Vacuum switch 14 lower end is 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 corrugated tube 21 upper end, and corrugated tube 21 lower end is sealingly fastened on end cap 20, it is achieved insulated tension pole 17 interface and the sealing of epoxy resin housing 18 cavity.Epoxy resin housing 18 has seal groove 19 on the contact surface of end cap 20, realizes sealing therebetween for loading sealing ring.After assembling, all high-voltage live parts are all by the epoxy sealing degree of protection up to IP68, and module can be the most properly functioning.The outer surface of epoxy material scribble conduction or semi-conductive layer for ground connection, this ensures that there the accessible region of whole module all in low potential.
Have observation window 5 on the left of epoxy resin housing 18, for judging the operating position of moving contact 9, improve processing safety.Its feasible implementation is: having position indicator 22 and back-moving spring 23 moving contact 9 is internally installed, when moving contact 9 is in ungrounded position, back-moving spring total holding position direction board 22 highlights 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 is by pushing position direction board 22 compression reseting spring 23.This method for indicating position is not on the premise of increasing contact head insulated distance, on the premise of not increasing product size, it is provided that location identification mark definitely.
Under different service conditions, owing to the insulant around conductor is electrically polarized, causing insulant to present electrification phenomenon, the radius of this live zone is creep age distance.In order to meet creep age distance requirement in the confined space, inside epoxy resin housing 18, it is cast with full skirt.
Claims (6)
1. novel solid insulation a vacuum switch three-station isolating grounding switch module, by three stations every
From earthed switch operating side, three-station isolating grounding switch, bus interface, outlet terminal, vacuum switch,
Isolation static contact, grounding contact, epoxy resin housing and end cap composition；Described three station isolation ground connection
Switch water parallel with vacuum switch to cast from epoxy resin housing, and supported by moving contact and conductive contact finger
Seat connects；Isolation static contact sealing is in epoxy resin housing, it is characterised in that: described grounding contact
It is installed on by the way of rear assembling on end cap or epoxy resin housing；Assembling side after described grounding contact
Formula is removable fixing connected mode；Described three-station isolating grounding switch supports both end sides by moving contact
It is fixed with guide pad on wall, is used for limiting moving contact and rotates.
Novel solid the most according to claim 1 insulation vacuum switch three-station isolating grounding switch
Module, it is characterised in that: described conductive contact finger seat is arranged on moving contact by removable fixing connected mode
In support.
Novel solid the most according to claim 2 insulation vacuum switch three-station isolating grounding switch
Module, it is characterised in that: removable fixing connection the between described conductive contact finger seat and moving contact support be
Threaded, pin connections, elastic deformation connection, snap close connection or inserting mode.
Novel solid the most according to claim 1 insulation vacuum switch three-station isolating grounding switch
Module, it is characterised in that: described moving contact supports the spacing with epoxy resin housing not less than 2mm.
Novel solid the most according to claim 1 insulation vacuum switch three-station isolating grounding switch
Module, it is characterised in that: moving contact stayed surface can be coated with last layer insulation or semi-conductive layer.
Novel solid the most according to claim 1 insulation vacuum switch three-station isolating grounding switch
Module, it is characterised in that: described moving contact is internally installed position indicator and back-moving spring；Dynamic tactile
When head is in ungrounded position, back-moving spring total holding position direction board highlights outside moving contact；Work as moving contact
Being in isolated location, operator can see position indicator by observation window；When moving contact moves to connect
During position, grounding contact is by pushing position direction board compression reseting spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410170359.3A CN103915282B (en) | 2014-04-25 | 2014-04-25 | Novel solid insulation vacuum switch three-station isolating grounding switch module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410170359.3A CN103915282B (en) | 2014-04-25 | 2014-04-25 | Novel solid insulation vacuum switch three-station isolating grounding switch module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103915282A CN103915282A (en) | 2014-07-09 |
| CN103915282B true CN103915282B (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410170359.3A Active CN103915282B (en) | 2014-04-25 | 2014-04-25 | Novel solid insulation vacuum switch three-station isolating grounding switch module |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390332B (en) * | 2015-12-21 | 2017-09-08 | 华仪电气股份有限公司 | A kind of high-pressure vacuum breaker with isolation features |
| CN107731608B (en) * | 2017-11-08 | 2024-04-12 | 北京北开电气股份有限公司 | High-voltage insulation multi-circle transmission structure |
| CN115831656B (en) * | 2022-12-02 | 2023-10-17 | 江苏德易迪康科技有限公司 | Stable GIS isolation composite grounding switch with disassembly and assembly functions |
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| CN103050325B (en) * | 2012-12-20 | 2015-05-20 | 云南云开电气股份有限公司 | Pole component of solid insulation switch equipment |
| CN103400720B (en) * | 2013-07-27 | 2016-06-15 | 北海银河开关设备有限公司 | A kind of solid insulation pole |
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| EP1355337A2 (en) * | 2002-04-16 | 2003-10-22 | Hitachi, Ltd. | Vacuum switch |
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| CN103915282A (en) | 2014-07-09 |
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Effective date of registration: 20160322 Address after: 361006 Mike building, torch high tech Industrial Development Zone, Huli District, Fujian, Xiamen, China Applicant after: AI Kai (Xiamen) Electric Technology Co., Ltd. Address before: 361006 Mike building, torch high tech Industrial Development Zone, Huli District, Fujian, Xiamen, China Applicant before: SPEED FAIR (XIAMEN) CO., LTD. |
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