CN102509678B - Combined electrical apparatus of indoor high-pressure vacuum circuit breaker and isolation/ground switch - Google Patents

Combined electrical apparatus of indoor high-pressure vacuum circuit breaker and isolation/ground switch Download PDF

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Publication number
CN102509678B
CN102509678B CN 201110331980 CN201110331980A CN102509678B CN 102509678 B CN102509678 B CN 102509678B CN 201110331980 CN201110331980 CN 201110331980 CN 201110331980 A CN201110331980 A CN 201110331980A CN 102509678 B CN102509678 B CN 102509678B
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China
Prior art keywords
vacuum circuit
isolation
circuit breaker
earthed switch
breaker
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CN 201110331980
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CN102509678A (en
Inventor
贾明才
王德杉
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Beijing Qingchang Power Technology Co., Ltd.
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ZHENGZHOU FU'AN GUONENG ELECTRICAL TECHNOLOGY Co Ltd
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Abstract

The invention relates a high-voltage electrical apparatus, and particularly relates to a combined electrical apparatus of an indoor high-pressure vacuum circuit breaker and an isolation/ground switch, and the combined electrical apparatus is of an integral structure. A circuit breaker is an epoxy sealing type vacuum circuit breaker, is in side-mounted arrangement and is fixedly mounted; a three-position isolation/ground switch is of a rotary structure, a switch blade base of a moving switch blade is directly fixed on a connecting terminal on the vacuum circuit breaker, the moving switch blade is driven to rotate by an operating mechanism through an insulation skeleton, thereby finishing isolation, switch-on and grounding three-position operation; multiple pairs of contact plates of a moving contact of the three-position isolation/ground switch are of a duckbill and spherical contact structure, the moving switch blade can properly swing, and the electrical conduction reliability of a branch bus and an earthing static contact is guaranteed; and the operating mechanism is electrically operated and also can be manually operated. The combined electrical apparatus provided by the invention has the advantages of modern design, compact structure, small volume, short conducting loop, less connection point, low manufacturing cost, high operational reliability and the like.

Description

Indoor high-voltage vacuum circuit breaker, isolation and earthed switch combined electrical apparatus
Technical field
The present invention relates to the combined electrical apparatus of a kind of High-Voltage Electrical Appliances, particularly indoor high-voltage vacuum circuit breaker, isolation and earthed switch.The invention belongs to 3.6~40.5kV High-Voltage Electrical Appliances field.
Background technology
Public switch elements such as indoor high-voltage vacuum circuit breaker, indoor high-voltage isolating switch and indoor hv earthing switch are the main electric elements in the ac metal closing switch gear (high-tension switch cabinet) at present.They not only all are the products of function singleness, and its overall structure mostly is the formal dress formula and arranges that namely the arranged direction of three-phase galvanic circle becomes parallel relation with the front of ac metal closing switch gear.When installation and operation, not only to take very big space, also to expend a large amount of copper conductors and be electrically connected, problems such as cause that the ac metal closing switch gear volume is big, the galvanic circle is long, tie point is many, energy resource consumption is big, manufacturing cost is high and operational reliability is low.And for safeguarding and overhauling, high-pressure vacuum breaker mostly is the extensible formula with conducting heavy current plug and chassis car, complex structure.But design and the manufacture level of vacuum circuit-breaker and operating mechanism thereof improve greatly at present, have realized few maintenance, for the extensible all multiple components that arrange and device have become the source that has an accident on the contrary.Even if existing a spot of isolation and earthed switch combination product are using now, but its operating mechanism all is not electronic, can not satisfy the requirement that intelligent electrical network telemechanical is controlled.
Summary of the invention
For overcoming many defectives that prior art exists, the invention provides a kind of modern design, compact conformation, the galvanic circle is short, tie point is few, low cost of manufacture and high indoor high-voltage vacuum circuit breaker, isolation and the earthed switch combined electrical apparatus of operational reliability, can make ac metal closing switch gear further realize miniaturization.
For achieving the above object, the present invention has structurally carried out multinomial improvement design to indoor high-voltage vacuum circuit breaker, isolating switch and earthed switch.It improves content and mainly comprises:
---vacuum circuit-breaker, isolation and earthed switch are combined integratedly compact conformation.
---overall structure is side-mounted, is orthoscopic with being electrically connected of main bus bar, economizes copper, save space.
---abandon extensible formula, adopt fixed mounting means, simple in structure, conduction reliability height.
---vacuum circuit-breaker is epoxy resin solid encapsulation formula structure, the run duration very little maintenance.
---the isolation of three stations and earthed switch with isolation, connection and grounding function are rotary structure, the blade base of its moving plug-in strip directly is fixed on the top binding post of solid sealed pole of vacuum circuit breaker, the many of moving contact are duckbill, sphere contact structures to contact, and can on moving plug-in strip, suitably swing, reliable with the conductive structure of branch bus or fixed contact.
Below be the technical scheme of indoor high-voltage vacuum circuit breaker of the present invention, isolation and earthed switch combined electrical apparatus:
Indoor high-voltage vacuum circuit breaker, isolation and earthed switch combined electrical apparatus are to be isolated and earthed switch (5) and integrated the combining of public underframe (3) by vacuum circuit-breaker (1), three stations, described vacuum circuit-breaker (1), three stations are isolated the side-mounted layout that becomes vertical relation with the three-phase galvanic circle employing of earthed switch (5) with the front of ac metal closing switch gear, are orthoscopic with being electrically connected of main bus bar.
Described vacuum circuit-breaker (1) is by electric conductor (12), with fixed connection the between other elements in realization such as screw (13) and packing ring (14) securing member of etc.ing and the ac metal closing switch gear, and public underframe (3) adopts the fixed installation between the housing of screw (13) and the realization of packing ring securing members such as (14) and ac metal closing switch gear equally.
Described vacuum circuit-breaker (1) is epoxy resin solid encapsulation formula structure, and its upper connecting terminal (20) directly links to each other with the upper end orthoscopic of vacuum interrupter (21).
Described three stations are isolated and earthed switch (5) is rotary structure, and its moving plug-in strip (18) is realized rotation by insulation framework (19) under the drive of operating mechanism (8).
The blade base (4) of described moving plug-in strip (18) directly is fixed on the upper connecting terminal (20) of pole (2).
The moving contact of described moving plug-in strip (18), mainly formed by many moving contact sheets (25) to duckbill, skeleton (26) and springs (27) etc., the form that electrically contacts of moving contact sheet (25) is sphere, and moving contact can be swung at tool arm (28) in certain angle round the hold-down screw of skeleton (26).
Three stations are isolated and the operating mechanism of earthed switch is the motor operating mechanism, and also manually actuating of while can be satisfied the telemechanical manipulation request of intelligent electrical network.
Description of drawings
Fig. 1 is side-looking structural representation of the present invention.
Fig. 2 is the cross-sectional view of facing of the present invention.
Fig. 3 is the structural representation of three stations isolation of the present invention and the moving plug-in strip of earthed switch.
Fig. 4 is separate type schematic diagram of the present invention.
Among the figure: the 1-vacuum circuit-breaker, the 2-pole, the public underframe of 3-, the 4-blade base, 5-three stations are isolated and earthed switch, the 6-branch bus, the 7-main bus bar, the 8-operating mechanism, 9-spring energy-storage operating mechanism, the 10-mechanical driving device, the 11-current transformer, the 12-electric conductor, the 13-screw, the 14-packing ring, 15-lower wire end, the 16-mixture of epoxy resins, 17-ground connection fixed contact, 18-moves plug-in strip, the 19-insulation framework, the 20-upper connecting terminal, the 21-vacuum interrupter, the 22-sliding contact, 23-sliding contact seat, the 24-insulated tension pole, 25-moving contact sheet, the 26-skeleton, the 27-springs, the 28-tool arm, the special-purpose underframe of 29-, the 30-insulating sleeve.
Embodiment
Below in conjunction with drawings and Examples indoor high-voltage vacuum circuit breaker of the present invention, isolation and earthed switch combined electrical apparatus are described further.
As shown in Figure 1, indoor high-voltage vacuum circuit breaker of the present invention, isolation and earthed switch combined electrical apparatus are mainly isolated by vacuum circuit-breaker (1), three stations and earthed switch (5) and public underframe integrated compositions such as (3).
Overall structure of the present invention is side-mounted layout, be that vacuum circuit-breaker (1), three stations are isolated and the arranged direction of the three-phase galvanic circle of earthed switch (5) is to become vertical relation with the front of ac metal closing switch gear (A of Fig. 1 to), the branch bus (6) that connects the isolation of three stations and earthed switch (5) and be contained between the main bus bar on the ac metal closing switch gear (7) is simple orthoscopic, needn't crooked or distortion.
The present invention is the fixed installation mode, be other elements in vacuum circuit-breaker (1) and the ac metal closing switch gear such as the connected mode between the current transformer (11), by electric conductor (12) with screw (13) fixedly connected with packing ring securing members such as (14), public underframe (3) also be usefulness screw (13) with packing ring securing members such as (14) with the housing of ac metal closing switch gear fixedly connected fixed installation.
Vacuum circuit-breaker (1) is solid encapsulation formula structure, mainly is made up of pole (2), spring energy-storage operating mechanism (9) and mechanical driving device (10) etc.
As shown in Figure 2, lower wire end (15) of pole (2), vacuum interrupter (21), upper connecting terminal (20), etc. form one with mixture of epoxy resins (16) by automatic pressure gelation process, sliding contact (22), sliding contact seat (23) and insulated tension pole (24) are adorned its inside.The last outlet direction of existing solid sealed pole of vacuum circuit breaker all is to be vertical with the axis of vacuum interrupter, and will link to each other with binding post by long conductor, and the upper end of upper connecting terminal of the present invention (20) and vacuum interrupter (21) is that orthoscopic directly links to each other.
Three stations are isolated and earthed switch (5) is rotary structure, and the blade base (4) of its moving plug-in strip (18) directly is fixed on the top binding post (20) of pole (2).Rotatable insulation framework (19) is made with phenolic composition or mixture of epoxy resins etc., and moving plug-in strip (18) is stuck in the neutral gear place of insulation framework (19).The fixed contact of isolating switch is exactly the branch bus (6) of ac metal closing switch gear, and is the same with the ground connection fixed contact (17) of earthed switch, is fixed on the cabinet of ac metal closing switch gear.Its operating mechanism (8) is the motor actuating, also manually actuating simultaneously.
Shown in accompanying drawing 3, accompanying drawing 4, moving plug-in strip (18) mainly is made up of tool arm (28) and moving contact two parts, and the bottom of tool arm (28) is installed on the blade base (4), by spring compression and rotatable.The moving contact that install on tool arm (28) top mainly is made up of many moving contact sheets (25) to duckbill, skeleton (26) and springs (27) etc., and moving contact sheet (25) is sphere with the form that electrically contacts of ground connection fixed contact (17) or branch bus (6).Moving contact can be swung the automatic capturing contact position round the hold-down screw of skeleton (26) at tool arm (28) in certain angle.
Public underframe (3) is formed by bending steel plate welding assembly.
Operation principle of the present invention is: after the spring energy-storage operating mechanism (9) of vacuum circuit-breaker (1) is received operational order, its output toggle arm driving device transmission device (10) moves to the left or to the right, and break-in becomes the motion up or down of insulated tension pole (24), promotes or pulling vacuum interrupter (21) is finished and closed a floodgate or sub-switching operation.Under the non-power status, three stations are isolated and the moving plug-in strip (18) of earthed switch (5) is in the isolated location shown in the accompanying drawing 2.During operation, operating mechanism (8) drives insulation framework (19) and drives moving plug-in strip (18) rotation.Turn clockwise, moving plug-in strip (18) is connected with branch bus (6), finishes the closing operation of isolating switch; Otherwise, be the sub-switching operation of isolating switch; Be rotated counterclockwise, moving plug-in strip (18) is connected with ground connection fixed contact (17), finishes the closing operation of earthed switch.Then, corresponding linkage can close a floodgate by automatic actuating vacuum circuit-breaker (1), realizes the short circuit ground connection of lower wire end, and earthed switch only by short circuit current, is not born the pass of short circuit current and closed function, has improved the life-span of earthed switch; Otherwise, be the sub-switching operation of earthed switch.
Have between vacuum circuit-breaker (1), the isolation of three stations and the earthed switch (5) and prevent misoperation apparatus accordingly.
Whenever necessary, three stations are isolated and earthed switch (5) also can be established special-purpose underframe (29) and vacuum circuit-breaker (1) apart arrangement in addition, and blade base this moment (4) is contained on the insulating sleeve (30).

Claims (5)

1. indoor high-voltage vacuum circuit breaker, isolate and the earthed switch combined electrical apparatus, it is characterized in that: by vacuum circuit-breaker (1), three stations are isolated and earthed switch (5) and integrated the combining of public underframe (3), described vacuum circuit-breaker (1), three stations are isolated the side-mounted layout that becomes vertical relation with the three-phase galvanic circle employing of earthed switch (5) with the front of ac metal closing switch gear, be orthoscopic with being electrically connected of main bus bar, described three stations are isolated and earthed switch (5) is rotary structure, its moving plug-in strip (18) is realized rotation by insulation framework (19) under the drive of operating mechanism (8), the moving contact of described moving plug-in strip (18) comprises many moving contact sheets (25) to duckbill, skeleton (26) and springs (27), the form that electrically contacts of moving contact sheet (25) is sphere, and moving contact can be swung at tool arm (28) in certain angle round the hold-down screw of skeleton (26).
2. indoor high-voltage vacuum circuit breaker according to claim 1, isolation and earthed switch combined electrical apparatus, it is characterized in that: described vacuum circuit-breaker (1) by electric conductor (12), with screw (13) and packing ring (14) realize with ac metal closing switch gear in other elements between fixed the connection, public underframe (3) adopts the fixed installation between the housing of screw (13) and packing ring (14) realization and ac metal closing switch gear equally.
3. indoor high-voltage vacuum circuit breaker according to claim 1, isolation and earthed switch combined electrical apparatus, it is characterized in that: described vacuum circuit-breaker (1) is epoxy resin solid encapsulation formula structure, and its upper connecting terminal (20) directly links to each other with the upper end orthoscopic of vacuum interrupter (21).
4. indoor high-voltage vacuum circuit breaker according to claim 1, isolation and earthed switch combined electrical apparatus, it is characterized in that: the blade base (4) of described moving plug-in strip (18) directly is fixed on the upper connecting terminal (20) of pole (2).
5. indoor high-voltage vacuum circuit breaker according to claim 1, isolation and earthed switch combined electrical apparatus is characterized in that: described three stations are isolated and earthed switch (5) operating mechanism can be the motor actuating, and the while also can be manual actuating.
CN 201110331980 2011-10-28 2011-10-28 Combined electrical apparatus of indoor high-pressure vacuum circuit breaker and isolation/ground switch Active CN102509678B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110331980 CN102509678B (en) 2011-10-28 2011-10-28 Combined electrical apparatus of indoor high-pressure vacuum circuit breaker and isolation/ground switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110331980 CN102509678B (en) 2011-10-28 2011-10-28 Combined electrical apparatus of indoor high-pressure vacuum circuit breaker and isolation/ground switch

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CN102509678A CN102509678A (en) 2012-06-20
CN102509678B true CN102509678B (en) 2013-10-02

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105281244A (en) * 2015-11-10 2016-01-27 天津平高智能电气有限公司 Solid insulation embedded pole and gas insulated switchgear using the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101789327A (en) * 2009-01-22 2010-07-28 福建东方电器有限公司 Combined appliance of indoor high-voltage vacuum load switch and high-voltage fuse
CN202009163U (en) * 2011-03-08 2011-10-12 杭州圣力电气有限公司 Control device for high-voltage switchgear
CN202230967U (en) * 2011-10-28 2012-05-23 郑州伏安国能电气技术有限公司 Combined electric device of indoor high-voltage vacuum circuit breaker and isolating and grounding switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101789327A (en) * 2009-01-22 2010-07-28 福建东方电器有限公司 Combined appliance of indoor high-voltage vacuum load switch and high-voltage fuse
CN202009163U (en) * 2011-03-08 2011-10-12 杭州圣力电气有限公司 Control device for high-voltage switchgear
CN202230967U (en) * 2011-10-28 2012-05-23 郑州伏安国能电气技术有限公司 Combined electric device of indoor high-voltage vacuum circuit breaker and isolating and grounding switch

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Effective date of registration: 20160206

Address after: Room 1111, block C, Jinyu building, 3rd Street, Haidian District, Beijing,

Patentee after: Beijing Qingchang Power Technology Co., Ltd.

Address before: 1 Building 2, building 96, Ruida Road, 450001, Ruida Road, hi tech Zone, Henan, Zhengzhou

Patentee before: Zhengzhou Fu'an Guoneng Electrical Technology Co., Ltd.

C41 Transfer of patent application or patent right or utility model