CN105375379A - Gas insulation switch cabinet and plug-in wiring sleeve assembly thereof - Google Patents

Gas insulation switch cabinet and plug-in wiring sleeve assembly thereof Download PDF

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Publication number
CN105375379A
CN105375379A CN201510864982.3A CN201510864982A CN105375379A CN 105375379 A CN105375379 A CN 105375379A CN 201510864982 A CN201510864982 A CN 201510864982A CN 105375379 A CN105375379 A CN 105375379A
Authority
CN
China
Prior art keywords
cabinet
solid insulation
block
sleeve assembly
plate
Prior art date
Application number
CN201510864982.3A
Other languages
Chinese (zh)
Inventor
吴小钊
师军伟
何战军
徐慧强
翟贺鹏
宋凯凯
Original Assignee
许继集团有限公司
许昌许继德理施尔电气有限公司
国家电网公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 许继集团有限公司, 许昌许继德理施尔电气有限公司, 国家电网公司 filed Critical 许继集团有限公司
Priority to CN201510864982.3A priority Critical patent/CN105375379A/en
Publication of CN105375379A publication Critical patent/CN105375379A/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00Arrangements of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00Arrangements of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02Arrangements of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035Gas-insulated switchgear

Abstract

The present invention relates to a gas insulation switch cabinet and a plug-in wiring sleeve assembly thereof. The wiring sleeve assembly comprises a conducting post which has an axial direction extending along with the front-rear direction and a solid insulation part fixedly sleeved at the radial outward of the conducting post. The solid insulation part is provided with a front inserted segment inserted with the jack of the sleeve on the switch cabinet, a stop flange in sealing cooperation with the stop at the outer side face of the switch cabinet is arranged at the back of the front inserted segment on the solid insulation part, and the stop flange extends or distributes along the circumference direction of the conducting post; and the wiring sleeve assembly also comprises a fixed pressing plate pressed and fixed forwards on the stop flange, and the fixed pressing plate is provided with an outward connection plate segment configured to radially extend along the conducting post to the outward of the stop flange and to press and fix the solid insulation part on the switch cabinet through a detachable fastening connection structure. The solid insulation part is pressed and fixed on the cabinet body through the fixed pressing plate with no need for arrangement of flange holes on the solid insulation part, and the radial dimension of the solid insulation part may be appropriately reduced.

Description

A kind of gas insulation switch cabinet and plug-in connecting sleeve assembly thereof

Technical field

The present invention relates to a kind of gas insulation switch cabinet and plug-in connecting sleeve assembly thereof.

Background technology

In middle/high-voltage electrical appliance device product, various types of sleeve pipe plays decisive role to the performance of product, capacity and reliability.Especially on C-GIS gas tank, if with traditional inseparable sleeve pipe, once sleeve position generation season cracking phenomenon causes gas tank to leak gas, when needing to change old sleeve pipe, just gas tank must be opened, from gas tank inside, old sleeve pipe be dismantled and could be changed new casing.Change sleeve pipe also to need to seal up gas tank, carried out inflation and equipment investment can be made to use.Also need first mounting sleeve just can carry out gas tank seal welding in addition when gas tank assembles, such assembly process just may cause sleeve pipe to be damaged when gas tank welds, and reduces installation qualification rate and the production efficiency of product.The manpower and materials of the inseparable sleeve pipe of the tradition not only mode at substantial of maintain and replace, and there is uncontrollable hidden danger of quality in assembling link and welding link.Therefore, a kind of cannula system of plug type is provided just to seem necessary.

Be in the Chinese utility model patent of CN204558983U, disclose a kind of gas-filling cabinet plug type insulating sleeve at Authorization Notice No., its bag cast connection copper rod in the epoxy, the one end connecting copper rod is be placed in the inner in gas tank body, the other end is the outer end be placed in outside gas tank, the inner has and has circular port, circular port inside is provided with spring touch finger, the solid insulation that epoxy resin is formed is provided with circular flange flange, the side towards the inner connecting copper rod of flange flange is provided with annular seal groove, flange flange is evenly equipped with multiple flange hole in the radial outside of annular seal groove around circumference.During assembling, insulating sleeve is inserted on gas tank, the inner connecting copper rod is inserted in gas tank with the corresponding electrical connection plug-in unit conductive communication to gas tank inside, outer end is arranged at outside gas tank, is connected by insulating sleeve by being arranged at sealing ring in annular seal groove and spinning penetrating the hold-down nut on the fixed bolt in flange hole with gas tank air-tightness.This insulating sleeve is plug-in, when requiring replacement, can pull out, the insulating sleeve more renewed from gas tank outside.

But above-mentioned insulating sleeve needs to arrange flange flange on the solid insulation of annular resin cast formation, flange hole on flange flange needs the radial outside being arranged in annular seal groove, and, ensure sealing effectiveness, flange hole diametrically can not be too short apart from the spacing of annular seal groove, otherwise can affect sealing effectiveness.So, what just make the size of the fixed insulation body of insulating sleeve inevitably need to do is larger, add cost, and, although directly arrange flange hole installation to facilitate a little on solid insulation, but inevitably weaken the self-strength of whole solid insulation, hold-down nut is directly press-fited act on flange flange time, during for ensureing that sealing applies larger pretightning force, easily there is the problem of localized crush at flange hole place, affect the fixing of insulating sleeve and sealing.

Summary of the invention

The invention provides a kind of switch cubicle plug-in connecting sleeve assembly, to solve in prior art the technical problem directly arranging flange hole and cause solid insulation radial dimension excessive on solid insulation; Meanwhile, the present invention also provides a kind of gas insulation switch cabinet using above-mentioned plug-in connecting sleeve assembly.

The technical scheme of switch cubicle plug-in connecting sleeve assembly provided by the present invention is: a kind of switch cubicle plug-in connecting sleeve assembly, comprise the conductive pole axially extended along the longitudinal direction and the solid insulation being fixedly set in conductive pole radial outside, solid insulation have with the sleeve pipe jack grafting on switch cubicle before inserting section, solid insulation is provided with the block flange for being sealed and matched with the lateral surface block of switch cubicle in the rear portion of described front inserting section, block flange extends or distribution along lead circumference, connecting sleeve assembly also comprises for press-fiting the fixation clip be fixed on block flange forward, fixation clip have along lead radial direction extend to described block flange outer sides for solid insulation being press-fited by removable fastening structure the outer side connecting plate section be fixed on switch cubicle.

Described outer side connecting plate section be provided with stud perforation for passing for the fixed bolt in removable fastening structure and backwards for pressing supporting surface with the top of the hold-down nut top press-fit in removable fastening structure.

Described outer side connecting plate section extends along lead circumference, and edge, the outer end transition of outer side connecting plate section is connected with the reinforcement flanging that bending extends forward.

Described block flange have forward for being sealed and matched front stopping surface and the rear top pressure surface for coordinating with fixation clip block backwards with the lateral surface block of switch cubicle, front stopping surface is provided with for embedded sealing ring to realize and the lateral surface of switch cubicle is sealed and matched the annular seal groove coordinated.

The technical scheme of the gas insulation switch cabinet of use provided by the present invention above-mentioned plug-in connecting sleeve assembly is: a kind of gas insulation switch cabinet, comprise cabinet, cabinet is provided with sleeve pipe jack, plug-in connecting sleeve assembly is equipped with in sleeve pipe jack, connecting sleeve assembly comprises the conductive pole axially extended along the longitudinal direction, the front end of conductive pole is and is provided with conducting connecting part in described cabinet and conducts electricity the leading electric connecting terminal be connected, conductive pole radial outside fixed cover is equipped with solid insulation, solid insulation have with the grafting of described sleeve pipe jack before inserting section, solid insulation is provided with the block flange be sealed and matched with the lateral surface block of described cabinet in the rear portion of described front inserting section, block flange extends or distribution along lead circumference, connecting sleeve assembly also comprises the fixation clip press-fiting and be fixed on block flange forward, fixation clip has the outer side connecting plate section extending to described block flange outer sides along lead radial direction, solid insulation to be press-fited by removable fastening structure and is fixed on described cabinet by outer side connecting plate section.

Described removable fastening structure is Stud connection structure, Stud connection structure comprises fixed bolt and the hold-down nut of spinning on fixed bolt, described outer side connecting plate section be provided with the stud perforation of passing for described fixed bolt and backwards press supporting surface with the top of described hold-down nut top press-fit.

Described fixed bolt is installed on the lateral surface of described cabinet.

Described outer side connecting plate section extends along lead circumference, and edge, the outer end transition of outer side connecting plate section is connected with the reinforcement flanging that bending extends forward.

Described block flange has to be sealed and matched front stopping surface and the rear top pressure surface coordinated with fixation clip block backwards with the lateral surface block of cabinet forward, front stopping surface is provided with O-ring seal, and in O-ring seal, embedded sealing ring is to realize being sealed and matched with the lateral surface of cabinet.

Be provided with conducting copper in described cabinet, conducting copper is provided with Mume flower contact, and the leading electric connecting terminal of described conductive pole is that conduct electricity inserted terminal before inserting, rear end with described Mume flower contact be hold for being connected after being connected with external terminal electronic conduction.

The invention has the beneficial effects as follows: in plug-in connecting sleeve assembly provided by the present invention, solid insulation is provided with block flange with the rear portion of front inserting section, when solid insulation and conductive pole are inserted in the sleeve pipe jack on switch cubicle, the leading electric connecting terminal of conductive pole conducts electricity with the conducting connecting part be provided with in the cabinet of switch cubicle and is connected, now, the lateral surface block of block flange and cabinet is sealed and matched, and is press-fited by solid insulation be fixed on cabinet by pushing up the fixation clip that is pressed on block flange.Because solid insulation is fixed on cabinet by the outer side connecting plate section by extending to block flange outer sides, like this, do not need to arrange flange hole again on solid insulation, suitably can reduce the radial dimension of solid insulation, reduce costs.And, owing to being directly pressed in so that solid insulation is fixed on cabinet on block flange by fixation clip top, when applying larger fastening force, being not easy to cause conquassation on stopping surface flange, effectively ensureing the fixing of butted line thimble assembly and sealing.

Further, removable fastening structure adopts Stud connection structure, and in the outer side connecting plate section of fixation clip, arrange stud perforation, and structure is simple, and mounting or dismounting more for convenience.Fixed bolt is directly installed on cabinet, removable fastening structure can be simplified further.

Further, edge, the outer end transition of side connecting plate section is outside connected with the reinforcement flanging that bending extends forward, when using fixed bolt to be press-fited by fixation clip to be fixed on cabinet, can improve the rigidity of whole fixation clip like this.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of embodiment of gas insulation switch cabinet provided by the present invention.

Embodiment

As shown in Figure 1, a kind of embodiment of gas insulation switch cabinet, the main improvements of the gas insulation switch cabinet in this embodiment are the plug-in connecting sleeve assembly that cabinet is provided with.

Gas insulation switch cabinet comprises cabinet 3, cabinet is the gas tank wall of the gas tank for surrounding switch cubicle, cabinet 3 is provided with sleeve pipe jack, plug-in connecting sleeve assembly 6 is equipped with in sleeve pipe jack, connecting sleeve assembly 6 comprises the conductive pole 62 axially extended along the longitudinal direction, the front end of conductive pole 62 is and is provided with conducting connecting part in cabinet 3 and conducts electricity the leading electric connecting terminal be connected, the conducting connecting part be herein arranged in cabinet 3 is specially the Mume flower contact 2 in conducting copper (not shown) that conduction is fixedly assemblied in cabinet, Mume flower contact 2 is herein self-reliance Mume flower contact, the leading electrical connection section of conductive pole 62 is concrete conducts electricity the front inserted terminal 622 of inserting with described Mume flower contact 2, rear end is hold for being connected after being connected with external terminal electronic conduction, after be connected end place be provided with install screwed hole 621.

The solid insulation 61 formed by epoxy resin is housed at the radial outside fixed cover of conductive pole 62, solid insulation 61 have with the sleeve pipe jack grafting on cabinet 3 before inserting section 614, the front portion of solid insulation 61 has the front inserting paragraph in the insertion cabinet being arranged in front inserting section 614 front, and the front inserted terminal 622 of conductive pole 62 protrudes from the front end face of solid insulation 61.

Solid insulation 61 is provided with block flange 611 in the rear portion of front inserting section 614, block flange 611 is the annular flange flange extended along lead 62 circumference, block flange 611 has stopping surface 612 and top pressure surface 613 backwards before being sealed and matched with the lateral surface block of cabinet forward, front stopping surface 612 is provided with annular seal groove, is embedded with sealing ring 7 to realize being sealed and matched with cabinet lateral surface in annular seal groove.

Connecting sleeve assembly also comprise forward press-fit the fixation clip 4 be fixed on the rear top pressure surface of block flange, fixation clip 4 is herein specially the annular pressing plate be sleeved on outside solid insulation, fixation clip is fitted on the rear top pressure surface 613 of block flange forward, and fixation clip 4 has the outer side connecting plate section 54 extending to described block flange outer sides along lead radial direction, and fixation clip to be press-fited by removable fastening structure and is fixed on cabinet 3 by outer side connecting plate section 41, in the present embodiment, removable fastening structure is specially Stud connection structure, Stud connection structure comprise be installed in cabinet 3 lateral surface on fixed bolt 5 and the hold-down nut of spinning on fixed bolt 5, the outer side connecting plate section 41 of fixation clip 4 is provided with the stud perforation of passing for fixed bolt 5 and backwards press supporting surface with the top of hold-down nut top press-fit.

Further, be improve the stiffness by itself of fixation clip, edge, the outer end transition of the outer side connecting plate section 41 of fixation clip 4 is connected with the reinforcement flanging 42 that bending extends forward.

During installation, first in cabinet inside, Mume flower contact 2 is connected with conducting copper, after the inner all components and parts installations of cabinet, sealing ring 7 is inlaid in the annular seal groove on solid insulation 61, conductive pole 62 and solid insulation 61 firmly insert in cabinet by the sleeve pipe jack on corresponding cabinet 3, the front inserted terminal 622 of conductive pole conducts electricity with Mume flower contact and is connected, simultaneously, the sealing ring of block flange front end is made to be close to cabinet lateral surface, ensure sealing, then install and be fastened and fixed pressing plate 4, connecting sleeve assembly is fixed on cabinet the most at last.

When needs carry out sleeve pipe replacing, take out hold-down nut, then fixation clip 4 is removed, solid insulation to be replaced and conductive pole are extracted from sleeve pipe jack, then according to contrary step, new connecting sleeve assembly can be installed.

In the present embodiment, fixation clip is realized and the removable of cabinet is fastenedly connected by Stud connection structure, in other embodiments, also realize the fixing assembling of fixation clip and cabinet as removable fastening structure by screw connection structure, such as external thread sleeve can be set on cabinet, meanwhile, inner screw sheath be set in the front end of fixation clip, during by being assemblied on external thread sleeve of fixation clip spiral, solid insulation is fixedly fitted on cabinet.

In the present embodiment, fixed bolt in stud draw bail is directly installed on the lateral surface of solid, in other embodiments, also can be welded mount pad on cabinet lateral surface, mount pad arranges screwed hole, by the fixed bolt of spinning in screwed hole, pressing plate fixedly can be assemblied on cabinet like this.

In the present embodiment, the sinciput pressure surface of block flange arranges annular seal groove and carrys out embedded sealing ring to realize and being sealed and matched of cabinet lateral surface, in other embodiments, also by arranging annular seal groove with embedded sealing ring on cabinet lateral surface to realize being sealed and matched between the block flange of solid insulation and cabinet.

In the present embodiment, the conductive pole of connecting sleeve assembly is used for the inserting of Mume flower contact correspondence conduction, and in other embodiments, conductive pole also correspondingly with other conducting connecting part can conduct electricity and connect.

The present invention also provides a kind of embodiment of switch cubicle plug-in connecting sleeve assembly, and the structure of the plug-in connecting sleeve assembly in this embodiment is identical with the structure of the connecting sleeve assembly in above-mentioned gas insulated switch cabinet embodiment, does not repeat them here.

Claims (10)

1. a switch cubicle plug-in connecting sleeve assembly, comprise the conductive pole axially extended along the longitudinal direction and the solid insulation being fixedly set in conductive pole radial outside, solid insulation have with the sleeve pipe jack grafting on switch cubicle before inserting section, it is characterized in that: solid insulation is provided with the block flange for being sealed and matched with the lateral surface block of switch cubicle in the rear portion of described front inserting section, block flange extends or distribution along lead circumference, connecting sleeve assembly also comprises for press-fiting the fixation clip be fixed on block flange forward, fixation clip have along lead radial direction extend to described block flange outer sides for solid insulation being press-fited by removable fastening structure the outer side connecting plate section be fixed on switch cubicle.
2. switch cubicle plug-in connecting sleeve assembly according to claim 1, is characterized in that: described outer side connecting plate section be provided with stud perforation for passing for the fixed bolt in removable fastening structure and backwards for pressing supporting surface with the top of the hold-down nut top press-fit in removable fastening structure.
3. switch cubicle plug-in connecting sleeve assembly according to claim 2, is characterized in that: described outer side connecting plate section extends along lead circumference, and edge, the outer end transition of outer side connecting plate section is connected with the reinforcement flanging that bending extends forward.
4. the switch cubicle plug-in connecting sleeve assembly according to claim 1 or 2 or 3, it is characterized in that: described block flange have forward for being sealed and matched front stopping surface and the rear top pressure surface for coordinating with fixation clip block backwards with the lateral surface block of switch cubicle, front stopping surface is provided with for embedded sealing ring to realize and the lateral surface of switch cubicle is sealed and matched the annular seal groove coordinated.
5. a gas insulation switch cabinet, comprise cabinet, cabinet is provided with sleeve pipe jack, plug-in connecting sleeve assembly is equipped with in sleeve pipe jack, connecting sleeve assembly comprises the conductive pole axially extended along the longitudinal direction, the front end of conductive pole is and is provided with conducting connecting part in described cabinet and conducts electricity the leading electric connecting terminal be connected, conductive pole radial outside fixed cover is equipped with solid insulation, solid insulation have with the grafting of described sleeve pipe jack before inserting section, it is characterized in that: solid insulation is provided with the block flange be sealed and matched with the lateral surface block of described cabinet in the rear portion of described front inserting section, block flange extends or distribution along lead circumference, connecting sleeve assembly also comprises the fixation clip press-fiting and be fixed on block flange forward, fixation clip has the outer side connecting plate section extending to described block flange outer sides along lead radial direction, solid insulation to be press-fited by removable fastening structure and is fixed on described cabinet by outer side connecting plate section.
6. gas insulation switch cabinet according to claim 5, it is characterized in that: described removable fastening structure is Stud connection structure, Stud connection structure comprises fixed bolt and the hold-down nut of spinning on fixed bolt, described outer side connecting plate section be provided with the stud perforation of passing for described fixed bolt and backwards press supporting surface with the top of described hold-down nut top press-fit.
7. gas insulation switch cabinet according to claim 6, is characterized in that: described fixed bolt is installed on the lateral surface of described cabinet.
8. gas insulation switch cabinet according to claim 6, is characterized in that: described outer side connecting plate section extends along lead circumference, and edge, the outer end transition of outer side connecting plate section is connected with the reinforcement flanging that bending extends forward.
9. according to the gas insulation switch cabinet in claim 5 to 8 described in any one, it is characterized in that: described block flange has to be sealed and matched front stopping surface and the rear top pressure surface coordinated with fixation clip block backwards with the lateral surface block of cabinet forward, front stopping surface is provided with O-ring seal, and in O-ring seal, embedded sealing ring is to realize being sealed and matched with the lateral surface of cabinet.
10. gas insulation switch cabinet according to claim 9, it is characterized in that: in described cabinet, be provided with conducting copper, conducting copper is provided with Mume flower contact, and the leading electric connecting terminal of described conductive pole is that conduct electricity inserted terminal before inserting, rear end with described Mume flower contact be hold for being connected after being connected with external terminal electronic conduction.
CN201510864982.3A 2015-12-01 2015-12-01 Gas insulation switch cabinet and plug-in wiring sleeve assembly thereof CN105375379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510864982.3A CN105375379A (en) 2015-12-01 2015-12-01 Gas insulation switch cabinet and plug-in wiring sleeve assembly thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510864982.3A CN105375379A (en) 2015-12-01 2015-12-01 Gas insulation switch cabinet and plug-in wiring sleeve assembly thereof

Publications (1)

Publication Number Publication Date
CN105375379A true CN105375379A (en) 2016-03-02

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CN201510864982.3A CN105375379A (en) 2015-12-01 2015-12-01 Gas insulation switch cabinet and plug-in wiring sleeve assembly thereof

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106654965A (en) * 2016-11-29 2017-05-10 福建中能电气有限公司 Gas-insulated switch sleeve and switch box
CN107017591A (en) * 2017-05-15 2017-08-04 河南森源电气股份有限公司 A kind of insulating sleeve and the gas-filling cabinet using the insulating sleeve
CN107181221A (en) * 2017-06-23 2017-09-19 河南森源电气股份有限公司 A kind of insulating sleeve and the gas-filling cabinet with the insulating sleeve
CN110165479A (en) * 2019-04-24 2019-08-23 平高集团有限公司 Conductive joint element for bar and wall bushing with the connector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201910593U (en) * 2010-11-16 2011-07-27 广东吉熙安电缆附件有限公司 Pluggable sleeve used for medium-pressure inflatable air tank
CN104165252A (en) * 2013-05-19 2014-11-26 徐州市龙泰煤矿设备制造厂 Novel pipe connecting sleeve structure
CN104779021A (en) * 2015-05-06 2015-07-15 河南森源电气股份有限公司 Insulating sleeve for gas insulated switchgear
CN204558983U (en) * 2015-05-08 2015-08-12 河南森源电气股份有限公司 A kind of gas-filling cabinet plug type insulating sleeve
CN205265133U (en) * 2015-12-01 2016-05-25 许继集团有限公司 Gas insulation switch cabinet and plug -in connects wire sleeve subassembly thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201910593U (en) * 2010-11-16 2011-07-27 广东吉熙安电缆附件有限公司 Pluggable sleeve used for medium-pressure inflatable air tank
CN104165252A (en) * 2013-05-19 2014-11-26 徐州市龙泰煤矿设备制造厂 Novel pipe connecting sleeve structure
CN104779021A (en) * 2015-05-06 2015-07-15 河南森源电气股份有限公司 Insulating sleeve for gas insulated switchgear
CN204558983U (en) * 2015-05-08 2015-08-12 河南森源电气股份有限公司 A kind of gas-filling cabinet plug type insulating sleeve
CN205265133U (en) * 2015-12-01 2016-05-25 许继集团有限公司 Gas insulation switch cabinet and plug -in connects wire sleeve subassembly thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106654965A (en) * 2016-11-29 2017-05-10 福建中能电气有限公司 Gas-insulated switch sleeve and switch box
CN107017591A (en) * 2017-05-15 2017-08-04 河南森源电气股份有限公司 A kind of insulating sleeve and the gas-filling cabinet using the insulating sleeve
CN107017591B (en) * 2017-05-15 2019-03-19 河南森源电气股份有限公司 A kind of insulating sleeve and the gas-filling cabinet using the insulating sleeve
CN107181221A (en) * 2017-06-23 2017-09-19 河南森源电气股份有限公司 A kind of insulating sleeve and the gas-filling cabinet with the insulating sleeve
CN110165479A (en) * 2019-04-24 2019-08-23 平高集团有限公司 Conductive joint element for bar and wall bushing with the connector

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Application publication date: 20160302