CN106611937A - Insulation device for grounding leading-out of three-position isolation grounding switch - Google Patents
Insulation device for grounding leading-out of three-position isolation grounding switch Download PDFInfo
- Publication number
- CN106611937A CN106611937A CN201510704118.7A CN201510704118A CN106611937A CN 106611937 A CN106611937 A CN 106611937A CN 201510704118 A CN201510704118 A CN 201510704118A CN 106611937 A CN106611937 A CN 106611937A
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- CN
- China
- Prior art keywords
- grounding
- contact
- insulating
- ground
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
本发明提供一种用于高压开关的三工位隔离接地开关接地引出的绝缘装置。本发明的接地引出的绝缘装置中，包括：绝缘接地支撑座（ 1 ）、壳体（ 2 ）、接地触头座 A 相（ 3 ）、接地触头座 B 相（ 4 ）、接地触头座 C 相（ 5 ）、接地铜板（ 6 ）、压板（ 7 ）、密封圈（ 8 ）、弹簧触头（ 9 ）、和动触头（ 10 ），其中：绝缘接地支撑座（ 1 ）由环氧树脂（ 1.1 ）和绝缘接地嵌件（ 1.2 ）整体浇注而成。 动触头（ 10 ）合闸后，动触头（ 10 ）通过弹簧触头（ 9 ）、接地触头座（ 3 ）（ 4 ）（ 5 ）、绝缘接地嵌件（ 1.2 ）、接地铜板（ 6 ）和壳体（ 2 ）实现零电位，从而可靠接地。 动触头（ 10 ）合闸后，动触头（ 10 ）通过弹簧触头（ 9 ）、接地触头座（ 3 ）（ 4 ）（ 5 ）和绝缘接地嵌件（ 1.2 ）实现绝缘引出。
The invention provides an insulation device used for the grounding lead-out of a three-position isolation grounding switch for a high-voltage switch. The insulating device for grounding leads of the present invention includes: an insulating ground support base ( 1 ), a housing ( 2 ), a ground contact base A phase ( 3 ), a ground contact base B phase ( 4 ), a ground contact base Phase C ( 5 ), grounding copper plate ( 6 ), pressure plate ( 7 ), sealing ring ( 8 ), spring contact ( 9 ), and moving contact ( 10 ), in which: insulating grounding support seat ( 1 ) is made of epoxy The resin ( 1.1 ) and insulating grounding insert ( 1.2 ) are integrally cast. After the moving contact ( 10 ) is closed, the moving contact ( 10 ) passes through the spring contact ( 9 ), the grounding contact seat ( 3 ) ( 4 ) ( 5 ), the insulating grounding insert ( 1.2 ), the grounding copper plate ( 6 ) ) and the shell ( 2 ) to achieve zero potential, so as to be reliably grounded. After the moving contact ( 10 ) is switched on, the moving contact ( 10 ) realizes insulation lead -out through the spring contact ( 9 ), the grounding contact seat ( 3 ) ( 4 ) ( 5 ) and the insulating grounding insert ( 1.2 ).
Description
Technical field
The present invention relates to one kind is applied to
SF6
Gas insulation metal seal combined electrical apparatus（
GIS
）The device of technical field, it is specifically a kind of to be used for three-station isolating grounding switch（
DES
）The seal that ground connection is drawn.
Background technology
The isolation of three stations is grounded cubicle switch, versatile and flexible with its small volume, compact conformation, Composite degree height, configuration mode, and can realize the mechanical chain of disconnecting switch and earthed switch, substantially increases power supply reliability, is
GIS
Indispensable ingredient in product.
It is existing
GIS
The three-station isolating grounding switch applied in product, be grounded draw seal more than realize that three-phase is sealed independently of one another using single-phase insulating ground support base mode, the cost for not only increasing equipment also add potential air leakage point.Grounding contact seat is adopted
U
Type structure, after moving contact motion in overall indentation grounding contact seat, grounding contact pedestal product is larger, causes whole inner space larger, and housing is also larger accordingly, and integrated cost is higher.
Find through the retrieval to prior art, China Patent Publication No.
CN102956396A
Describe a kind of " Compact ground isolation three-station ", the grounding contact is the surface that shell vertical rod is arranged on by means of a support member, it is impossible to realize that independent insulation is drawn.China Patent Publication No.
CN102024606A
A kind of " three-station isolating grounding switch " is described, grounding contact seat is fixedly installed on insulated leg, and insulated leg is fixedly installed on end cap, and three-phase is sealed independently of one another, increased equipment air leakage point and gas leakage risk.China Patent Publication No.
CN201327881Y
" a kind of insulation earthing device " is described, extraction electrode is grounded during common working condition and is connected with pressing plate and shell by hex bolts, realize reliable ground；During insulating ground working condition, outer-hexagonal bolt is backed out, ground electrode is displaced outwardly by enclosure interior gas pressure, earth-return circuit is separated with shell, realizes insulating ground, ground connection and the conversion drawn of insulating, need demounting bolt, by gas pressure so that extraction electrode slides, there is certain potential safety hazard, after slip number of times is excessive, there is gas leakage risk.
The content of the invention
The present invention is directed to deficiencies of the prior art, there is provided a kind of to be grounded the seal drawn for three-station isolating grounding switch, meet insulation is drawn in three-station isolating grounding switch and reliable ground demand.
The present invention is achieved by the following technical solutions, and the present invention includes：One insulating ground support base, housing,
3
Mutually be grounded contact base, copper earth plate, pressing plate, sealing ring, spring contact,
3
Phase moving contact and attachment bolt, wherein：Insulating ground support base is by epoxy resin
+3
The casting of phase insulating ground inserts is formed,
3
Mutually be grounded contact base and
3
Phase insulating ground inserts is fixedly connected by attachment bolt；Insulating ground support base and housing are fixedly connected with pressing plate by attachment bolt；Copper earth plate is by bolt-connection fixation and insulating ground support base and housing.
Described reliable ground is realized by moving contact, spring contact, grounding contact seat, insulating ground support base, copper earth plate and housing.
Described insulation is drawn through moving contact, spring contact, grounding contact seat, insulating ground support base and realizes.
Described grounding contact seat is designed as setting forked type structure, and phase spacing changes from small to big, and insulation is drawn grounding device size and greatly reduced, and is effectively reduced inner space, and housing manufacture difficulty is substantially reduced, and effectively reduces housing cost.
Described grounding contact seat is designed as loop configuration, and extended contact base after moving contact motion greatly reduces contact base size, optimizes inner space, and shell dimension greatly reduces.
Described grounding contact seat, internal processing twice spring contact groove, can be installed according to the actual requirements
1
~
2
Individual spring contact.
Described insulating ground support base is designed as the epoxy resin of high-quality
+3
The casting of phase insulating ground inserts is formed,
3
Phase insulating ground inserts is cast in the epoxy,
3
The integrated poured molding of phase insulating ground inserts, it is simple and compact for structure；" racetrack " seal groove is designed on epoxy resin, sealing ring can be installed, effectively prevented gas from leaking, compare three seal grooves, substantially reduce gas leakage risk.
Described pressing plate, compresses insulating ground support base, it is to avoid the fastening force of bolt directly acts on insulating ground support base, it is to avoid unbalance stress occurs rupture in cold cycling under bolt clipping forcee effect.
Three-phase ground contact base, insulating ground support base, copper earth plate are tightened together by bolt in the present invention.Because insulating ground inserts head with
DES
, near reason, the electric field of insulating ground inserts head is very big, is designed here as dynamic side conductor
SR
Spherical structure optimizes head electric field；Grounding contact seat is provided with counterbore simultaneously, hexagon socket head cap screw can be sunk in counterbore, to improve bolt head electric field.
Compared with background technology, it has the advantage that the technical program.
, grounding contact seat be designed as loop configuration, grounding contact seat can be exposed after switch on of moving contact, grounding contact seat size is made to accomplish minimum, effectively reduce shell dimension, reduce material cost, product overall dimensions are reduced, makes product layout compacter, be conducive to electrical equipment miniaturization and Product Cost Control.
, insulating ground support base
3
Phase insulating ground inserts is integrated poured, reduces sealing position and sealing part, so as to reduce air leakage point, greatly reduces gas leakage probability.
3
Phase insulating ground inserts is integrated poured, installs more convenient.
, grounding contact seat tree forked type structure, phase spacing changes from small to big, and is grounded the seal size drawn and greatly reduces, and housing manufacture difficulty is substantially reduced, and effectively reduces housing cost.
Description of the drawings
Figure
1
For reliable ground schematic diagram of the present invention.
Figure
2
For insulating ground support base schematic diagram of the present invention.
Figure
3
It is the present invention according to different demands assembling schematic diagram.
Figure
4
Schematic diagram is drawn for present invention insulation.
Figure
5
Position schematic diagram is used for the present invention.
Specific embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following embodiments.
As schemed
1
Shown, the present embodiment includes：Insulating ground support base（
1
）, housing（
2
）, grounding contact seat
A
Phase（
3
）, grounding contact seat
B
Phase（
4
）, grounding contact seat
C
Phase（
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 insulating ground inserts（
1.2
）It is integrated poured to form, such as scheme
2
It is shown.
Insulating ground support base（
1
）Using the integrated poured molding of mould, " racetrack " seal groove and
12
The direct moulding by casting of individual " taper " unthreaded hole.In order to optimize Analysis of End Electric Field, insulating ground inserts（
1.2
）End adopts
SR
Spherical designs；For the ease of installing grounding contact seat（
3
）（
4
）（
5
）, insulating ground inserts（
1.2
）End sections cut off, and design
2
It is individual
M
Screwed hole is used to assemble；Insulating ground inserts（
1.2
）Axial direction is designed
1
It is individual
M
Screwed hole is used to install copper earth plate（
7
）；Draw and electric field requirement to meet insulation,
3
Phase insulating ground inserts（
1.2
）Certain phase spacing, epoxy resin are kept to each other（
1.1
）It is " racetrack " structure by Design of Dies, not only saves space outerpace size, simplifies housing（
2
）Structure and reduction housing（
2
）Cost, and good looking appearance is generous.Epoxy resin is along the design of " racetrack " seal groove inward flange
12
The individual unthreaded hole with taper for bolt fasten, unthreaded hole be uniformly distributed cause bolt fastening after uniform force, coordinate " racetrack " seal groove with
O
Type cushion rubber, effectively prevents internal gas from leaking so that year leak rate≤
0.3%
。
Insulating ground support base（
1
）By pressing plate（
7
）Use
12
It is individual to be bolted to housing（
2
）On, housing（
2
）On be designed with
12
It is individual
M
Screwed hole, bolt fastening rear fender（
7
）Compress insulating ground support base（
1
）, by pressing plate（
7
）Bolt clipping forcee stepless action is in insulating ground support base（
1
）On, it is to avoid bolt clipping forcee directly acts on insulating ground support base（
1
）On there is unbalance stress and be damaged.Insulating ground support base（
1
）Compresses seal（
8
）, sealing ring（
8
）Housing is caused after compression（
2
）Internal
SF6
Gas year leak rate≤
0.3%
。
Grounding contact seat
A
Phase（
3
）, grounding contact seat
B
Phase（
4
）With grounding contact seat
C
Phase（
5
）Insulating ground inserts is fastened to by hexagon socket head cap screw（
1.2
）On, grounding contact seat
A
Phase（
3
）With ground contact base
C
Phase（
5
）It is designed as setting forked type structure, realizes that phase spacing changes from small to big；Root is provided with counterbore, bolt can be sunk in counterbore, to improve bolt head electric field；Contact base is designed as loop configuration, moving contact（
10
）Can expose grounding contact seat after in-place closing, greatly reduce grounding contact seat space, reduce grounding contact seat cost；Grounding contact seat ring shape inside configuration is designed
2
Individual spring contact groove, can be installed according to the actual requirements
1
~
2
Individual spring contact（
9
）, see figure
3
It is shown.
Copper earth plate（
6
）Pass through
3
Individual bolt is fastened to insulating ground inserts（
1.2
）On, copper earth plate（
6
）Pass through
2
Individual bolt is fastened to housing（
2
）On, moving contact（
10
）After in-place closing, figure
1
It is shown, moving contact（
10
）By spring contact（
9
）With grounding contact seat
A
Phase（
3
）, grounding contact seat
B
Phase（
4
）With grounding contact seat
C
Phase（
5
）Reliable contacts, moving contact（
10
）Through spring contact（
9
）, grounding contact seat
A
Phase（
3
）, grounding contact seat
B
Phase（
4
）With grounding contact seat
C
Phase（
5
）, insulating ground inserts（
1.2
）And copper earth plate（
6
）It is attached to housing（
2
）On, due to housing（
2
）It is that ground connection is in zero potential, so that moving contact（
10
）Ground connection is in zero potential.
Figure
4
Illustrate to realize that insulation is drawn, moving contact（
10
）After in-place closing, moving contact（
10
）Through spring contact（
9
）, grounding contact seat
A
Phase（
3
）, grounding contact seat
B
Phase（
4
）, grounding contact seat
C
Phase（
5
）With insulating ground inserts（
1.2
）Realize that insulation is drawn.
Claims (7)
1. the seal that a kind of ground connection is drawn, including insulating ground support base（1）, housing（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 insulating ground inserts（1.2）It is integrated poured to form, it is characterised in that 3 phase insulating ground inserts（1.2）Integrated poured molding, by bolt and pressing plate（7）Directly fix and housing（2）On.
2. the seal that ground connection as claimed in claim 1 is drawn, it is characterised in that above-mentioned 3 are mutually grounded contact base（3）（4）（5）It is fixed on insulating ground inserts（1.2）.
3. the seal that ground connection as claimed in claim 1 is drawn, it is characterised in that grounding contact seat A phases（3）With grounding contact seat C phases（5）To set forked type structure, grounding contact seat B phases（4）For linear structure, grounding contact seat（3）（4）（5）End is loop configuration, and there are spring contact groove, spring contact in inside（9）It is installed in grounding contact seat, moving contact（10）Expose grounding contact seat after combined floodgate（3）（4）（5）.
4. the seal that ground connection as claimed in claim 1 is drawn, it is characterised in that insulating ground support base（1）By pressing plate（7）Housing is bolted to using 12（2）On.
5. the seal that ground connection as claimed in claim 1 is drawn, it is characterised in that copper earth plate（6）By bolt and insulating ground inserts（1.2）And housing（2）It is connected.
6. the seal that ground connection as claimed in claim 1 is drawn, it is characterised in that moving contact（10）After combined floodgate, moving contact（10）By spring contact（9）, grounding contact seat（3）（4）（5）, insulating ground inserts（1.2）, copper earth plate（6）And housing（2）Zero potential is realized, so as to reliable ground.
7. the seal that ground connection as claimed in claim 1 is drawn, it is characterised in that moving contact（10）After combined floodgate, moving contact（10）By spring contact（9）, grounding contact seat（3）（4）（5）With insulating ground 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 true CN106611937A (en) | 2017-05-03 |
| CN106611937B 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106564A (en) * | 2018-10-28 | 2020-05-05 | 江苏华江科技有限公司 | GIS compact type co-simplified grounding switch control mechanism shell |
| CN114300295A (en) * | 2021-11-25 | 2022-04-08 | 河南平高电气股份有限公司 | Earthing switch for GIS |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3671789B1 (en) * | 2018-12-21 | 2021-06-23 | 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 | Three-position isolating earthing 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 | A grounding transition plate and a grounding switch using the grounding transition plate |
-
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 | Three-position isolating earthing 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 | A grounding transition plate and a grounding switch using the grounding transition plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106564A (en) * | 2018-10-28 | 2020-05-05 | 江苏华江科技有限公司 | GIS compact type co-simplified grounding switch control mechanism shell |
| CN114300295A (en) * | 2021-11-25 | 2022-04-08 | 河南平高电气股份有限公司 | Earthing switch for GIS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106611937B (en) | 2018-10-12 |
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Granted publication date: 20181012 Termination date: 20211027 |