CN106611937B - A kind of seal drawn for three-station isolating grounding switch ground connection - Google Patents
A kind of seal drawn for three-station isolating grounding switch ground connection Download PDFInfo
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- CN106611937B CN106611937B CN201510704118.7A CN201510704118A CN106611937B CN 106611937 B CN106611937 B CN 106611937B CN 201510704118 A CN201510704118 A CN 201510704118A CN 106611937 B CN106611937 B CN 106611937B
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- China
- Prior art keywords
- phases
- grounding contact
- contact seat
- grounding
- seat
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The present invention provides a kind of seal that the three-station isolating grounding switch ground connection for high-voltage switch gear is drawn.In the seal that the ground connection of the present invention is drawn, including：Insulating ground support base（1）, shell（2）, grounding contact seat A phases（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）, copper earth plate（6）, pressing plate（7）, sealing ring（8）, spring contact（9）And moving contact（10）, wherein：Insulating ground support base（1）By epoxy resin（1.1）With 3 phase insulating ground inserts（1.2）It is integrated poured to form.Moving contact（10）After combined floodgate, moving contact（10）Pass through spring contact（9）, grounding contact seat A phases（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）, 3 phase insulating ground inserts（1.2）, copper earth plate（6）And shell（2）Zero potential is realized, to reliable ground.Moving contact（10）After combined floodgate, moving contact（10）Pass through spring contact（9）, grounding contact seat A phases（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）With 3 phase insulating ground inserts（1.2）Realize that insulation is drawn.
Description
Technical field
The present invention relates to one kind being applied to SF6 gas insulation metal seal combined electrical apparatus（GIS）The dress of technical field
It sets, it is specifically a kind of to be used for three-station isolating grounding switch（DES）It is grounded the seal drawn.
Background technology
Three stations isolation ground connection stacked switch, small with its, compact-sized, Composite degree height, configuration mode are flexible
It is various, and can realize the mechanical chain of disconnecting switch and earthing switch, substantially increase power supply reliability, be in GIS products not
The component part that can lack.
The three-station isolating grounding switch applied in existing GIS products, be grounded extraction seal mostly use it is single-phase
Insulating ground support base mode realizes that 3 phases seal independently of one another, and the cost for not only increasing equipment also adds potential gas leakage
Point.Grounding contact seat uses U-shaped structure, is integrally retracted in grounding contact seat after moving contact movement, and grounding contact pedestal product is larger,
Cause entire inner space larger, shell is also larger accordingly, and overall cost is relatively high.
By the retrieval discovery to the prior art, 102956396 A of China Patent Publication No. CN describe a kind of " compact
Type ground connection isolation three-station ", which is the surface that shell upright bar is mounted on by means of a support element, be cannot achieve
Independent insulation is drawn.102024606 A of China Patent Publication No. CN are described a kind of " three-station isolating grounding switch ", ground connection
Contact base is fixedly installed on insulated leg, and insulated leg is fixedly installed on end cap, and 3 phases seal independently of one another, increase and set
Standby air leakage point and gas leakage risk.201327881 Y of China Patent Publication No. CN describe " a kind of insulation earthing device ", commonly
It is grounded extraction electrode when working condition by hex bolts to be connected with pressing plate and shell, realizes reliable ground；Insulating ground works
When state, outer-hexagonal bolt is backed out, by enclosure interior gas pressure grounding electrode is displaced outwardly, earth-return circuit with it is outer
Shell separates, and realizes that insulating ground, the conversion that ground connection and insulation are drawn need demounting bolt, by gas pressure so that drawing electricity
Pole is slided, and there are some potential safety problemss, and there are gas leakage risks after sliding number is excessive.
Invention content
The present invention is directed to deficiencies of the prior art, provides a kind of for three-station isolating grounding switch grounding lead
The seal gone out meets in three-station isolating grounding switch the needs of to insulation extraction and reliable ground.
The present invention is achieved through the following technical solutions, and the present invention includes：One insulating ground support base, shell, 3
Mutually ground connection contact base, copper earth plate, pressing plate, sealing ring, spring contact, 3 phase moving contacts and attachment bolt, wherein：Insulating ground
Support base adds 3 phase insulating ground inserts to cast by epoxy resin, and 3 phases ground connection contact base and 3 phase insulating ground inserts pass through
Attachment bolt is fixedly connected；Insulating ground support base and shell are fixedly connected by attachment bolt and pressing plate；Copper earth plate passes through
Bolt-connection is fixed on insulating ground support base and shell.
The reliable ground passes through moving contact, spring contact, grounding contact seat, insulating ground support base, copper earth plate
It is realized with shell.
The insulation is drawn through moving contact, spring contact, grounding contact seat, insulating ground support base and realizes.
The grounding contact seat is designed as tree forked type structure, and phase spacing changes from small to big, and earthing or grounding means ruler is drawn in insulation
It is very little to greatly reduce, it is effectively reduced inner space, shell manufacture difficulty substantially reduces, and effectively reduces shell cost.
The grounding contact seat is designed as loop configuration, and extended contact base after moving contact movement greatly reduces tactile
Headstock size, optimizes inner space, and shell dimension greatly reduces.
The grounding contact seat, inside processing twice spring contact slot can install 1~2 spring according to actual demand
Contact.
The insulating ground support base is designed as good epoxy resin and 3 phase insulating ground inserts is added to cast, 3 phases
Insulating ground inserts is cast in the epoxy, and the 3 integrated poured moldings of phase insulating ground inserts are simple and compact for structure；Asphalt mixtures modified by epoxy resin
" racetrack " seal groove is designed on fat, sealing ring can be installed, effectively prevent gas from leaking, and compares three seal grooves, greatly
It is big to reduce gas leakage risk.
The pressing plate compresses insulating ground support base under bolt clipping forcee effect, avoids the fastening force of bolt direct
Insulating ground support base is acted on, the unbalance stress in cold cycling is avoided to rupture.
3 phases contact base, insulating ground support base, copper earth plate is grounded by bolt in the present invention to tighten together.Cause
Side conductor is moved close to reason in insulating ground inserts head with DES, and the electric field on insulating ground inserts head is very big, is designed here as SR
Spherical structure optimizes head electric field；Grounding contact seat is equipped with counterbore simultaneously, can sink to hexagon socket head cap screw in counterbore, to improve
Bolt head electric field.
Compared with the background art, it has the following advantages that the technical program：
, grounding contact seat be designed as loop configuration, can expose grounding contact seat after switch on of moving contact, make grounding contact seat ruler
It is very little to accomplish minimum, shell dimension is effectively reduced, material cost is reduced, product overall dimensions is reduced, makes product layout
It is compacter, be conducive to electrical equipment miniaturization and Product Cost Control.
, 3 phase insulating ground inserts of insulating ground support base it is integrated poured, reduce sealing position and sealing part, to
Reduce air leakage point, greatly reduces gas leakage probability.3 phase insulating ground inserts are integrated poured, and installation is more convenient.
, grounding contact seat tree forked type structure, phase spacing changes from small to big, and the seal size for being grounded extraction subtracts significantly
Few, shell manufacture difficulty substantially reduces, and effectively reduces shell cost.
Description of the drawings
Fig. 1 a and Fig. 1 b are reliable ground schematic diagram of the present invention.
Fig. 2 is insulating ground support base schematic diagram of the present invention.
Fig. 3 a and Fig. 3 b are the present invention according to different demands assembling schematic diagram.
Fig. 4 is that schematic diagram is drawn in present invention insulation.
Fig. 5 is that the present invention uses position schematic diagram.
Specific implementation mode
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
As illustrated in figs. 1A and ib, the present embodiment includes：Insulating ground support base（1）, shell（2）, grounding contact seat A phases
（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）, copper earth plate（6）, pressing plate（7）, sealing ring（8）, spring contact
（9）And moving contact（10）, wherein：Insulating ground support base（1）By epoxy resin（1.1）With 3 phase insulating ground inserts（1.2）
It is integrated poured to form, as shown in Figure 2.
Insulating ground support base（1）Using the integrated poured molding of mold, " racetrack " seal groove（13）With 12 " tapers "
Unthreaded hole（15）Direct moulding by casting.In order to optimize Analysis of End Electric Field, 3 phase insulating ground inserts（1.2）End is spherical using SR（12）
Design；For the ease of installing grounding contact seat A phases（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）, 3 phases, which insulate, to be connect
Ground inserts（1.2）End sections are cut off, and design 2 M threaded holes（11）For assembling；3 phase insulating ground inserts（1.2）It is axial
Design 1 M threaded hole in direction（14）For installing copper earth plate（6）；In order to meet, insulation is drawn and electric field requirement, 3 phases insulate
It is grounded inserts（1.2）Certain phase spacing, epoxy resin are kept to each other（1.1）It is tied for " racetrack " by mold design
Structure not only saves exterior space size, simplifies shell（2）Structure and reduction shell（2）Cost, and good appearance is generous.Ring
Oxygen resin is along " racetrack " seal groove（13）Inward flange designs 12 unthreaded holes with taper（15）It is fastened for bolt, unthreaded hole is uniform
Distribution makes uniform force after bolt fastening, coordinates " racetrack " seal groove（13）And sealing ring（8）, effectively prevent internal gas
Body leak so that year leak rate≤0.3%.
Insulating ground support base（1）Pass through pressing plate（7）It is fixed on shell using 12 bolts（2）On, shell（2）Upper design
There are 12 M threaded holes, bolt to fasten rear fender（7）Compress insulating ground support base（1）, pass through pressing plate（7）Bolt clipping forcee is equal
It is even to act on insulating ground support base（1）On, avoid bolt clipping forcee from directly acting on insulating ground support base（1）It is upper occur by
Power unevenness is damaged.Insulating ground support base（1）Compresses seal（8）, sealing ring（8）So that shell after compression（2）It is internal
SF6 gas year leak rate≤0.3%.
Grounding contact seat A phases（3）, grounding contact seat B phases（4）With grounding contact seat C phases（5）It is fastened by hexagon socket head cap screw
To 3 phase insulating ground inserts（1.2）On, grounding contact seat A phases（3）With ground contact base C phases（5）It is designed as tree forked type structure, it is real
Existing phase spacing changes from small to big；Root is equipped with counterbore, can sink to bolt in counterbore, to improve bolt head electric field；Contact
Seat is designed as loop configuration, moving contact（10）It can expose grounding contact seat after in-place closing, greatly reduce grounding contact seat
Space reduces grounding contact seat cost；Grounding contact seat ring shape inside configuration designs 2 spring contact slots, can be according to reality
Demand installs 1~2 spring contact（9）, as shown in Figure 3a and Figure 3b shows.
Copper earth plate（6）It is fastened to 3 phase insulating ground inserts by 3 bolts（1.2）On, copper earth plate（6）Pass through 2
Bolt is fastened to shell（2）On, moving contact（10）After in-place closing, shown in Fig. 1 a and 1b, moving contact（10）Pass through spring contact
（9）With grounding contact seat A phases（3）, grounding contact seat B phases（4）With grounding contact seat C phases（5）Reliable contacts, moving contact（10）Through
Cross spring contact（9）, grounding contact seat A phases（3）, grounding contact seat B phases（4）With grounding contact seat C phases（5）, 3 phase insulating grounds
Inserts（1.2）And copper earth plate（6）It is attached to shell（2）On, due to shell（2）It is in zero potential for ground connection, so that dynamic
Contact（10）Ground connection is in zero potential.
Fig. 4 signals realize that insulation is drawn, moving contact（10）After in-place closing, moving contact（10）By spring contact（9）, connect
Ground contact base A phases（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）With 3 phase insulating ground inserts（1.2）It realizes exhausted
Edge is drawn.
Claims (7)
1. a kind of seal that ground connection is drawn, including insulating ground support base（1）, shell（2）, grounding contact seat A phases（3）、
Grounding contact seat B phases（4）, grounding contact seat C phases（5）, copper earth plate（6）, pressing plate（7）, sealing ring（8）, spring contact（9）With
Moving contact（10）, wherein：Insulating ground support base（1）By epoxy resin（1.1）With 3 phase insulating ground inserts（1.2）Entirety is poured
It notes, which is characterized in that 3 phase insulating ground inserts（1.2）Integrated poured molding, passes through bolt and pressing plate（7）It is directly fixed
In shell（2）On.
2. the seal that ground connection as described in claim 1 is drawn, it is characterised in that above-mentioned grounding contact seat A phases（3）, ground connection
Contact base B phases（4）, grounding contact seat C phases（5）It is fixed on 3 phase insulating ground inserts（1.2）.
3. the seal that ground connection as described in claim 1 is drawn, which is characterized in that grounding contact seat A phases（3）It is touched with ground connection
Headstock C phases（5）To set forked type structure, grounding contact seat B phases（4）For linear structure, grounding contact seat A phases（3）, grounding contact
Seat B phases（4）, grounding contact seat C phases（5）End is loop configuration, and there are spring contact slot, spring contact in inside（9）Installation ground connection
Contact base A phases（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）It is interior, moving contact（10）Expose grounding contact after combined floodgate
Seat A phases（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）.
4. the seal that ground connection as described in claim 1 is drawn, which is characterized in that insulating ground support base（1）Pass through pressure
Plate（7）It is fixed on shell using 12 bolts（2）On.
5. the seal that ground connection as described in claim 1 is drawn, which is characterized in that copper earth plate（6）Pass through bolt and 3 phases
Insulating ground inserts（1.2）And shell（2）It is connected.
6. the seal that ground connection as described in claim 1 is drawn, which is characterized in that moving contact（10）After combined floodgate, moving contact
（10）Pass through spring contact（9）, grounding contact seat A phases（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）, it is 3 mutually exhausted
Edge is grounded inserts（1.2）, copper earth plate（6）And shell（2）Zero potential is realized, to reliable ground.
7. the seal that ground connection as described in claim 1 is drawn, which is characterized in that moving contact（10）After combined floodgate, moving contact
（10）Pass through spring contact（9）, grounding contact seat A phases（3）, grounding contact seat B phases（4）, grounding contact seat C phases（5）It is mutually exhausted with 3
Edge is grounded inserts（1.2）Realize that insulation is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510704118.7A CN106611937B (en) | 2015-10-27 | 2015-10-27 | A kind of seal drawn for three-station isolating grounding switch ground connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510704118.7A CN106611937B (en) | 2015-10-27 | 2015-10-27 | A kind of seal drawn for three-station isolating grounding switch ground connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106611937A CN106611937A (en) | 2017-05-03 |
| CN106611937B true CN106611937B (en) | 2018-10-12 |
Family
ID=58615031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510704118.7A Expired - Fee Related CN106611937B (en) | 2015-10-27 | 2015-10-27 | A kind of seal drawn for three-station isolating grounding switch ground connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106611937B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3671789A1 (en) * | 2018-12-21 | 2020-06-24 | ABB Schweiz AG | Medium or high voltage switchgear with a three position switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030070239A (en) * | 2002-02-21 | 2003-08-29 | 엘지산전 주식회사 | bushing structure of earthing switch in GIS |
| CN201112231Y (en) * | 2007-10-22 | 2008-09-10 | 厦门协成实业有限公司 | Three-station isolation ground switch |
| CN201170993Y (en) * | 2008-02-20 | 2008-12-24 | 江苏省如高高压电器有限公司 | Tri-station insulation ground switch |
| CN201327881Y (en) * | 2008-12-08 | 2009-10-14 | 北京北开电气股份有限公司 | Insulative grounding device |
| CN202260234U (en) * | 2011-07-08 | 2012-05-30 | 平高集团有限公司 | Grounding transitional plate and grounding switch employing same |
-
2015
- 2015-10-27 CN CN201510704118.7A patent/CN106611937B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030070239A (en) * | 2002-02-21 | 2003-08-29 | 엘지산전 주식회사 | bushing structure of earthing switch in GIS |
| CN201112231Y (en) * | 2007-10-22 | 2008-09-10 | 厦门协成实业有限公司 | Three-station isolation ground switch |
| CN201170993Y (en) * | 2008-02-20 | 2008-12-24 | 江苏省如高高压电器有限公司 | Tri-station insulation ground switch |
| CN201327881Y (en) * | 2008-12-08 | 2009-10-14 | 北京北开电气股份有限公司 | Insulative grounding device |
| CN202260234U (en) * | 2011-07-08 | 2012-05-30 | 平高集团有限公司 | Grounding transitional plate and grounding switch employing same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3671789A1 (en) * | 2018-12-21 | 2020-06-24 | ABB Schweiz AG | Medium or high voltage switchgear with a three position switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106611937A (en) | 2017-05-03 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20211027 |
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| CF01 | Termination of patent right due to non-payment of annual fee |