CN103531396A - Three-station isolating grounding switch with double guiding rod and connection rod transmission structure - Google Patents

Three-station isolating grounding switch with double guiding rod and connection rod transmission structure Download PDF

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Publication number
CN103531396A
CN103531396A CN201210229386.4A CN201210229386A CN103531396A CN 103531396 A CN103531396 A CN 103531396A CN 201210229386 A CN201210229386 A CN 201210229386A CN 103531396 A CN103531396 A CN 103531396A
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CN
China
Prior art keywords
contact
grounding
isolation
ground connection
transmission
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.)
Pending
Application number
CN201210229386.4A
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Chinese (zh)
Inventor
黄海涛
方栽东
陈佑桥
吴小虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Happy Lake Open Electric (hubei) Co Ltd
Original Assignee
Happy Lake Open Electric (hubei) Co Ltd
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 Happy Lake Open Electric (hubei) Co Ltd filed Critical Happy Lake Open Electric (hubei) Co Ltd
Priority to CN201210229386.4A priority Critical patent/CN103531396A/en
Publication of CN103531396A publication Critical patent/CN103531396A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a three-station isolating grounding switch with a double guiding rod and connection rod transmission structure. The three-station isolating grounding switch comprises a contact base. The big head end of a transmission crank arm is fixed on a switch insulating main shaft; one end of a grounding conducting rod cooperates with a grounding middle contact and a grounding static contact, and the other end of the grounding conducting rod is hinged to the small head end of the transmission crank arm through a grounding connection rod; and one end of an isolating conducting rod cooperates with an isolating middle contact and an isolating static contact, and the other end of the isolating conducting rod is hinged to the small head end of the transmission crank arm. The three-station isolating grounding switch with the double guiding rod and connection rod transmission structure has the advantages of direct and simple transmission and small space required by switch installation; the isolating grounding movable and static contacts are in direct butt joint and insertion, the resistance is small, and the alignment is easy so that the touch reliability of the insertion of the movable contact is ensured; and the three-station isolating grounding switch with the double guiding rod and connection rod transmission structure integrates the advantages of the linear transmission and the swinging direct transmission of the traditional grounding switch and completely solves the defects of the traditional grounding switch.

Description

Two conducting rod link transmission structure three station isolation grounding switchs
Technical field
The present invention relates to a kind of isolation earthing switch, relate in particular to a kind of pair of conducting rod link transmission structure three station isolation grounding switchs.
Background technology
Cubicle Gas-Insulated Switchgear (being called for short GIS) is that the all-closed combined High-Voltage Electrical Appliances with SF6 insulating gas are filled in inside, due to its integrated degree high (integrating circuit breaker, isolating switch, instrument transformer, earthed switch etc.), floor space is little, safe and reliable, in electrical network, obtained application more and more widely.Particularly high pressure 126kV, 252kV and superhigh pressure field, Cubicle Gas-Insulated Switchgear (being called for short GIS) has occupied main status in electrical network.
In order fully to meet that GIS is high in reliability, volume is little, quality is light and the requirement of the aspect such as non-maintaining, GIS isolation earthing switch used progressively adopts fabricated structure, three station isolation grounding switchs are isolating switch and the combined integrated product of earthed switch function, according to the action of operating mechanism, can make major loop in conducting, isolation, three kinds of operating states of ground connection.Generally isolating switch is at the zero load lower deciliter circuit of ultra-high-tension power transmission line, to reach conversion and the interruption maintenance object that realizes circuit, and under specific circumstances also can deciliter limited certain loads.Earthed switch is mainly used in loop ground connection.
The transmission of the moving contact structure of three station isolation grounding switchs that generally use at present and operation rotating shaft and moving contact mainly contains the transmission of linear pattern rack-and-pinion and two kinds of versions of oscillating-type direct-drive, the transmission of linear pattern rack-and-pinion adopts single moving contact rectilinear motion to realize three kinds of operating states of three station isolation grounding switchs, movement travel is long, isolation grounding static contact arranges point-blank, and it is large that switch is installed required bulk.For the requirement of meeting spatial structure, leading body all adopts polymorphic structure aluminum casting, and rack-and-pinion transmission manufacture, installation accuracy have relatively high expectations, thereby cost is also higher.The direct drive isolation earthing switch of oscillating-type adopts moving contact to realize three kinds of operating states of three station isolation grounding switchs around operation rotating shaft rotary oscillation, transmission is directly simple, isolation grounding static contact can become various angles to arrange, it is little that switch is installed required bulk, but because isolation ground connection dynamic/static contact need rotate docking plug, if adopt circular conducting rod Mume flower contact can cause die misalignment, contact is bad causes heating, thereby affects the electric conductivity of three station isolation grounding switchs.And adopt blade plug-in type contact, and can make contact shape produce corner angle, have influence on electric field to be evenly uniformly distributed, even if shield member is set in addition, be also difficult to accomplish that electric field is even, thereby affect the insulation property of three station isolation grounding switchs.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of pair of conducting rod link transmission structure three station isolation grounding switchs, traditional earthed switch be can overcome and linear pattern transmission or the direct drive defect of oscillating-type adopted, installation footprint is little, electric conductivity and good insulation preformance.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of pair of conducting rod link transmission structure three station isolation grounding switchs, comprise touch base, the middle contact of isolation and the middle contact of ground connection are installed on touch base, switch insulation main shaft is connected with electromotor operating mechanism, isolation fixed contact is installed on main bus bar
The stub end of transmission crank arm is fixed on switch insulation main shaft, match with contact in the middle of ground connection and grounding static contact in ground connection conducting rod one end, the ground connection conducting rod other end is hinged by the little head end of ground connection connecting rod and transmission crank arm, match with contact in the middle of isolation and isolation fixed contact in isolate conductive bar one end, the little head end of the isolate conductive bar other end and transmission crank arm is hinged.
Grounding static contact and ground insulation sub-connection.
Ground connection conducting rod and isolate conductive bar are cylindrical conductive bar, and in the middle of ground connection, in the middle of contact, grounding static contact, isolation fixed contact and isolation, contact is Mume flower contact.
Provided by the invention pair of conducting rod link transmission structure three station isolation grounding switchs, owing to having adopted the two conducting rod link transmission structures of ground connection conducting rod and isolate conductive bar, be that direct-drive adopts moving contact to be operated and done traveling priority and realize three kinds of operating states of three station isolation grounding switchs by connecting lever, transmission is directly simple, it is little that switch is installed required bulk, and isolation ground connection dynamic/static contact directly docks plug, resistance is little, be easy to aim at, and guaranteed the contact reliability that moving contact inserts; The present invention combines traditional earthed switch and adopts linear pattern transmission and the direct drive advantage of oscillating-type, has thoroughly solved the defect of its existence; Fixed contact adopts Mume flower contact, and ground connection conducting rod and isolate conductive bar adopt cylindrical conductive bar, have further guaranteed that conduction reliability and the Electric Field Distribution of contact is even.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention, now the present invention in major loop in ground connection service position;
Fig. 2 is the present invention's schematic diagram in isolation service position in major loop;
Fig. 3 is the present invention's schematic diagram in ground connection service position in major loop.
Embodiment
As shown in Figure 1, the present invention includes touch base 8, the middle contact 3 of isolation and the middle contact 10 of ground connection are installed on touch base 8, switch insulation main shaft is connected with electromotor operating mechanism by kinematic link, and isolation fixed contact 2 is installed on main bus bar 1,
The stub end of transmission crank arm 6 is fixed on switch insulation main shaft, match with contact 10 in the middle of ground connection and grounding static contact 11 in ground connection conducting rod 9 one end, ground connection conducting rod 9 other ends are hinged with the little head end of transmission crank arm 6 by ground connection connecting rod 7, match with contact 3 in the middle of isolation and isolation fixed contact 2 in isolate conductive bar 4 one end, the little head end of isolate conductive bar 4 other ends and transmission crank arm 6 is hinged.
Grounding static contact 11 is connected with ground insulation 12.
Ground connection conducting rod 9 and isolate conductive bar 4 are cylindrical conductive bar, and in the middle of isolation fixed contact 2, isolation, contact 3, the middle contact 10 of ground connection and grounding static contact 11 are Mume flower contact.
The course of work of the present invention is as follows:
1. from connecting service position, be transformed into isolated location: switch insulation main shaft drives rotation under the actuating of electromotor operating mechanism, transmission crank arm 6 on switch insulation main shaft rotarily drives spacer link 5 and does curvilinear motion, spacer link 5 drives isolate conductive bar 4 to do rectilinear motion, makes isolate conductive bar 4(moving contact) from the isolation fixed contact 2 inserting, exit and enter isolated location; Meanwhile, transmission crank arm 6 rotarily drives ground connection connecting rod 7 and does curvilinear motion, and ground connection connecting rod 7 promotes ground connection conducting rod 9 and inserts the middle contact 10 of ground connection from ready position, enters isolated location, and the present invention completes the conversion from on-position to isolated location.
The present invention is the intermediateness of three station isolation grounding switchs of two conducting rod link transmission structures when isolated location, and this state both can be converted to rapidly on-position, also can be exchanged into earthing position, and specific works process as depicted in figs. 1 and 2.
2. from isolated location, be transformed into earthing position: the transmission crank arm 6 switch insulation main shaft rotarily drives ground connection connecting rod 7 under electromotor operating mechanism drives, ground connection connecting rod 7 promotes ground connection conducting rod 9 and does rectilinear motion insertion grounding static contact 11, meanwhile, spacer link 5 promotes the isolation middle contact 3 of isolate conductive bar 4 from inserting, and enters ready position.Now the present invention completes landing operation, and specific works process as shown in Figures 2 and 3.
From earthing position, get back to isolated location-connection service position: actuating electromotor operating mechanism (now the direction of motion with above-mentioned 1. 2. the course of work is contrary), transmission crank arm 6 on switch insulation main shaft rotarily drives spacer link 5, and spacer link 5 promotes isolate conductive bar 4 and does rectilinear motion insertion isolation fixed contact 2.Meanwhile, ground connection connecting rod 7 drives ground connection conducting rod 9 to extract out from grounding static contact 11, rests on the middle contact 10 of ground connection, makes isolating switch get back to again isolated location.Transmission crank arm 6 on switch insulation main shaft continues to rotarily drive spacer link 5, spacer link 5 promotes isolate conductive bar 4 and does the isolation fixed contact 2 on rectilinear motion insertion main bus bar 1, ground connection connecting rod 7 drives ground connection conducting rod 9 contact 10, to exit in the middle of ground connection, gets back to ready position.Now three station isolation grounding switchs of the present invention are got back to the service position of connecting major loop, as shown in Figure 1.
The present invention be hermetically sealed and be filled with the GIS pot type volume of SF6 gas of certain pressure in major loop is realized to connection, isolation, three kinds of operating states of ground connection.

Claims (3)

1. two conducting rod link transmission structure three station isolation grounding switchs, comprise touch base (8), the middle contact (3) of isolation and the middle contact (10) of ground connection are installed on touch base (8), switch insulation main shaft is connected with electromotor operating mechanism, isolation fixed contact (2) is installed on main bus bar (1), it is characterized in that:
The stub end of transmission crank arm (6) is fixed on switch insulation main shaft, match with contact (10) in the middle of ground connection and grounding static contact (11) in ground connection conducting rod (9) one end, ground connection conducting rod (9) other end is hinged with the little head end of transmission crank arm (6) by ground connection connecting rod (7), match with contact (3) in the middle of isolation and isolation fixed contact (2) in isolate conductive bar (4) one end, the little head end of isolate conductive bar (4) other end and transmission crank arm (6) is hinged.
2. according to claim 1 pair of conducting rod link transmission structure three station isolation grounding switchs, is characterized in that: grounding static contact (11) is connected with ground insulation (12).
3. according to claim 1 and 2 pair of conducting rod link transmission structure three station isolation grounding switchs, it is characterized in that: ground connection conducting rod (9) and isolate conductive bar (4) are cylindrical conductive bar, in the middle of ground connection, in the middle of contact (10), grounding static contact (11), isolation fixed contact (2) and isolation, contact (3) is Mume flower contact.
CN201210229386.4A 2012-07-04 2012-07-04 Three-station isolating grounding switch with double guiding rod and connection rod transmission structure Pending CN103531396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210229386.4A CN103531396A (en) 2012-07-04 2012-07-04 Three-station isolating grounding switch with double guiding rod and connection rod transmission structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210229386.4A CN103531396A (en) 2012-07-04 2012-07-04 Three-station isolating grounding switch with double guiding rod and connection rod transmission structure

Publications (1)

Publication Number Publication Date
CN103531396A true CN103531396A (en) 2014-01-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210229386.4A Pending CN103531396A (en) 2012-07-04 2012-07-04 Three-station isolating grounding switch with double guiding rod and connection rod transmission structure

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CN (1) CN103531396A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493090A (en) * 1994-04-05 1996-02-20 Abb Power T&D Company, Inc. Two-step operating mechanism for combined interrupter disconnect switch
CN201229884Y (en) * 2008-07-02 2009-04-29 中国西电电气股份有限公司 Fast grounding switch
CN201536079U (en) * 2009-08-27 2010-07-28 广州白云电器设备股份有限公司 Three position switch of high pressure gas-insulated switchgear device
CN202633139U (en) * 2012-07-04 2012-12-26 乐星湖开电气(湖北)有限公司 Three-station isolating grounding switch with double guiding rod and connection rod transmission structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493090A (en) * 1994-04-05 1996-02-20 Abb Power T&D Company, Inc. Two-step operating mechanism for combined interrupter disconnect switch
CN201229884Y (en) * 2008-07-02 2009-04-29 中国西电电气股份有限公司 Fast grounding switch
CN201536079U (en) * 2009-08-27 2010-07-28 广州白云电器设备股份有限公司 Three position switch of high pressure gas-insulated switchgear device
CN202633139U (en) * 2012-07-04 2012-12-26 乐星湖开电气(湖北)有限公司 Three-station isolating grounding switch with double guiding rod and connection rod transmission structure

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Application publication date: 20140122