CN102543558A - Vacuum switch module for looped network cabinet - Google Patents

Vacuum switch module for looped network cabinet Download PDF

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Publication number
CN102543558A
CN102543558A CN2012100098284A CN201210009828A CN102543558A CN 102543558 A CN102543558 A CN 102543558A CN 2012100098284 A CN2012100098284 A CN 2012100098284A CN 201210009828 A CN201210009828 A CN 201210009828A CN 102543558 A CN102543558 A CN 102543558A
Authority
CN
China
Prior art keywords
vacuum switch
switch module
ring main
main unit
movable cross
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.)
Granted
Application number
CN2012100098284A
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Chinese (zh)
Other versions
CN102543558B (en
Inventor
刘卫荣
刘涛
王曼莉
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Beijing Orient Vacuum Electric Co Ltd
Original Assignee
Beijing Orient Vacuum Electric 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 Beijing Orient Vacuum Electric Co Ltd filed Critical Beijing Orient Vacuum Electric Co Ltd
Priority to CN201210009828.4A priority Critical patent/CN102543558B/en
Publication of CN102543558A publication Critical patent/CN102543558A/en
Application granted granted Critical
Publication of CN102543558B publication Critical patent/CN102543558B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a vacuum switch module for a looped network cabinet. The vacuum switch module comprises a shell, and a first vacuum switch tube, a movable cross rod contact and a second vacuum switch tube for grounding, which are arranged in the shell, wherein a fixed conductive rod of the first vacuum switch tube is connected with a wire inlet terminal, and a movable conductive rod of the first vacuum switch tube is connected with an operating mechanism by a first insulation rod; the movable conductive rod can be electrically connected with one end of the movable cross rod contact in a breaking manner; the other end of the movable cross rod contact is connected with a wire outlet terminal; the movable cross rod contact is connected with the operating mechanism by a second insulation rod; the wire outlet terminal is connected with one end of the movable cross rod contact and is also connected with a movable conductive rod of a second vacuum switch; and a fixed conductive rod of the second vacuum switch is connected with a grounding terminal. According to the vacuum switch module disclosed by the invention, the opening, isolating, grounding and closing functions of the looped network cabinet can be realized, the problem of only two stations in the traditional directly operated type isolation switch is effectively solved, and by the addition of an auxiliary grounding terminal, two ends of a fuse protector can be reliably grounded when the vacuum switch module is applied to a combined electric appliance.

Description

Ring main unit is used vacuum switch module
Technical field
The present invention relates to a kind of high voltage switching device, relate in particular to a kind of ring main unit and use vacuum switch module.
Background technology
Ring main unit is that one group of high voltage switchgear is contained in the steel sheet metal cabinet or makes the electric equipment of assembly unit compartment ring network power supply unit; It is the important switchgear of ring network power supply and terminal power supply; On-load switch and fuse are adopted in its core, have simple in structure, volume is little, price is low, can improve power supply parameter and advantages such as performance and power supply safety.At present, for improving power supply reliability, in exchanging the 10KV distribution network, promptly use ring main unit to control and protect in the power distribution station of load center and the box-type substation; Ring main unit generally is divided into air insulation and SF6 insulate two kinds, is used for a deciliter load current, cut-offs short circuit current and no-load transformer electric current, and the charging current of certain distance overhead transmission line, cable line plays control and protective effect; In the cabinet, switch mainly contains air-generating, air pressing type, vacuum type, SF6 formula.A large amount of uses is SF6 formula switch and vacuum switch at present; Use the external insulation that is divided into again of vacuum switch to use air mode and external insulation to use the SF6 formula.Switch in the ring main unit generally requires three stations, promptly cuts off load, buffer circuit, reliable ground.Air-generating, air pressing type and SF6 formula on-load switch are prone to realize three stations, yet SF6 gas is the important component part of greenhouse gas, and it uses and has received more and more strict restriction; Vacuum switch has become the main flow of high-voltage switch gear; And vacuum switch is little because of the fracture distance, for its work of security consideration cut-offs, does not make isolation fracture; So generally the ring main unit with vacuum switch can add an isolating switch and vacuum switch polyphone; To form isolation fracture, be the volume and the raising reliability of dwindling ring main unit, the Switch main body in the ring main unit is generally made module.
Present disclosed ring main unit exists defective separately with vacuum switch module, uses two stations that have only of Direct Action Type isolating switch; Use the swing type isolating switch be difficult to accomplish to seal fully, be prone to take place the electrical breakdown fault in the back that makes moist; And the vacuum switch module that is used for switch-fuse combination at present, fuse two ends generally have only an end ground connection, do not meet standard-required, as require the equal ground connection in two ends also need increase extra operating mechanism, thereby make device more complicated, and cost is higher.
Summary of the invention
The objective of the invention is to the problems referred to above, provide a kind of and can make the ring main unit of fuse two ends reliable ground use vacuum switch module when having three station Direct Action Type isolating switches and being used for combined electrical apparatus.
The objective of the invention is to realize through following technical scheme:
A kind of ring main unit is used vacuum switch module; Comprise housing and be arranged at first vacuum switch tube, the movable cross bar contact in the housing and be used for second vacuum switch tube of ground connection; The static conductive rod of said first vacuum switch tube links to each other with input terminal; Its moving conductive rod links to each other with operating mechanism through first insulating bar; And but moving conductive rod is electrically connected with an end disjunction of movable cross bar contact, and the other end of said movable cross bar contact is connected with outlet terminal, and movable cross bar contact links to each other with operating mechanism through second insulating bar; One end of said outlet terminal connection activity cross bar contact also links to each other with the moving conductive rod of second vacuum switch, and the static conductive rod of said second vacuum switch links to each other with earth terminal.
Optional, when said ring main unit uses with vacuum switch module and fuse combination, also be provided with the auxiliary earth terminal in the said housing; The end that said auxiliary earth terminal is positioned at inside modules has endoporus; Said movable cross bar contact is provided with and the suitable auxiliary earth of endoporus rod, and when the vacuum switch module was in ground state, the auxiliary earth rod was inserted into ground connection in the endoporus of auxiliary earth terminal; Make fuse two ends reliable ground; Safer, and when ring main unit only was used as circuit breaker or on-load switch with vacuum switch module, the direct connection with load of its outlet terminal got final product; At this moment, vacuum switch module need not be provided with auxiliary earth rod and auxiliary earth terminal.
Further, the moving conductive rod of said first vacuum switch tube through first be flexible coupling be fixed on the housing bearing on the fixed contact seat link to each other, said fixed contact seat is provided with projection, the sliding tray that said projection and movable cross bar contact upper end is offered is suitable.
Further; Said housing internal fixation is provided with the fixed contact rod; Said movable cross bar contact lower end has and the suitable sliding tray of fixed contact rod; Movable cross bar contact slidably is set on the horizontally disposed fixed contact rod, and said fixed contact rod one end links to each other with outlet terminal, and the other end is flexible coupling through second and links to each other with the moving conductive rod of second vacuum switch tube.
Preferably, the sliding surface in the said sliding tray is provided with the elastic conduction fingertip.
Preferably; The moving conductive rod place of said second vacuum switch tube is provided with sluice separating spring; This sluice separating spring ejects the moving contact of second vacuum switch tube, when the vacuum switch module is in combined floodgate or isolation, makes the dynamic/static contact of second vacuum switch tube be in reliable open position like this.
Preferably, in order to monitor bus and load whether electricity is arranged, be provided with inductance loop at input terminal and outlet terminal place, this inductance loop links to each other with the supervising device of ring main unit through lead.
Preferably, said housing is processed by the material with good insulation performance and mechanical strength properties, and is further preferred; Said housing is processed by epoxy resin or Merlon or nylon, and further preferred, said housing is processed by epoxide resin material; And in order further to improve fail safe; Be coated with electric conducting material on the housing outer surface of this ring main unit with vacuum switch module, and it is connected with the earth terminal of ring main unit, thereby improved the fail safe when overhauling.
Preferably, be coated with resilient coating on said first vacuum switch tube and second vacuum switch tube, this resilient coating is that independent part is mounted on the vacuum switch tube outside, or with the disposable vacuum switch tube outside that is coated on of injection technique.
Preferably, said first is flexible coupling and second is flexible coupling and is flexible coupling for copper strips.
Beneficial effect of the present invention is that said ring main unit can be realized ring main unit separating brake, isolation, ground connection, closing function with vacuum switch module, efficiently solves the problem that traditional Direct Action Type isolating switch has only two stations; And, can when being used for combined electrical apparatus, make fuse two ends reliable ground through setting up the auxiliary earth terminal; And the various inserts of vacuum switch module are built in the insulation shell; Volume is little; Reliability is high, and housing adopts the epoxide resin material with good insulation performance and mechanical strength properties, good insulation preformance; It is connected with the earth terminal of ring main unit and sprays electric conducting material at outer surface, thereby has improved the fail safe when overhauling; In addition; When the sluice separating spring that the second vacuum switch tube moving conductive rod place is provided with can guarantee that vacuum switch module is in combined floodgate or isolated location; Second vacuum switch tube is in reliable separating brake position; The elastic conduction fingertip that is provided with on the sliding surface in the sliding tray increases electric conductivity, and the inductance loop that input terminal and outlet terminal place are provided with can monitor bus and whether load has electricity, guarantees safety.
Description of drawings
According to accompanying drawing and embodiment the present invention is done further explain below.
Fig. 1 for ring main unit of the present invention with vacuum switch module closing position view;
Fig. 2 for ring main unit of the present invention with vacuum switch module isolated location view;
Fig. 3 for ring main unit of the present invention with vacuum switch module earthing position view.
Among the figure:
1, input terminal; 2, first vacuum switch tube; 3, resilient coating; 4, first is flexible coupling; 5, housing; 6, first insulating bar; 7, fixed contact seat; 8, elastic conduction fingertip; 9, movable cross bar contact; 10, second insulating bar; 11, outlet terminal; 12, fixed contact rod; 13, auxiliary earth terminal; 14, earth terminal; 15, second vacuum switch tube; 16, sluice separating spring; 17, second is flexible coupling; 18, auxiliary earth rod.
Embodiment
Please referring to figs. 1 through shown in 3; In present embodiment, a kind of ring main unit is used vacuum switch module, comprises housing 5 and is arranged at first vacuum switch tube 2, fixed contact seat 7, movable cross bar contact 9, the fixed contact rod 12 in the housing 5 and is used for second vacuum switch tube 15 of ground connection; The static conductive rod of first vacuum switch tube 2 links to each other with input terminal 1; Its moving conductive rod links to each other with operating mechanism through first insulating bar 6, and moving conductive rod through first be flexible coupling 4 be fixed on housing 5 bearings on fixed contact seat 7 link to each other, fixed contact seat 7 is provided with projection; The sliding tray that projection and movable cross bar contact 9 upper ends are offered is suitable; Sliding surface in the sliding tray is provided with elastic conduction fingertip 8, and movable cross bar contact 9 links to each other with operating mechanism through second insulating bar 10, and its other end and fixed contact excellent 12 are slidingly connected; Also be provided with auxiliary earth rod 18 on the movable cross bar contact 9; It is suitable with the endoporus that is arranged on auxiliary earth terminal 13 1 ends in the housing 5, and said fixed contact rod 12 right-hand members link to each other with outlet terminal 11, and its left end is flexible coupling through second and 17 is connected with the moving conductive rod of second vacuum switch tube 15; The static conductive rod of second vacuum switch tube 15 links to each other with earth terminal 14, and its moving conductive rod place is provided with sluice separating spring 16.
When this vacuum switch module is assembled in the ring main unit; During concrete the making; First vacuum switch tube 2 and second vacuum switch tube 15 coat certain thickness resilient coating 3, utilize injection technique that itself and input terminal 1, outlet terminal 11, earth terminal 14, auxiliary earth terminal 13 and various inserts are fixed in the housing 5 then.The vacuum switch tube 2,15 that has coated resilient coating 3 also can be tucked in the housing 5 after housing completes; First vacuum switch tube 2, fixed contact seat 7, movable cross bar contact 9, fixed contact rod 12, second vacuum switch tube 15 all are arranged horizontally; Operating mechanism is arranged in the front portion of vacuum switch module; High-tension electricity inlet wire busbar arrangement is in the vacuum switch module top, and the outlet cable arrangements is in the vacuum switch module below.Operating mechanism is operated first insulating bar 6 and second insulating bar 10 respectively, realizes separating brake, isolation, ground connection, the closing function of ring main unit.
During the actual use of this ring main unit vacuum switch module, high-tension electricity is introduced from input terminal 1, draws from outlet terminal 11 to be connected with fuse again, finally is connected to and uses electric loading, and the other end of fuse is connected with auxiliary earth terminal 13.
As shown in Figure 1; For this vacuum switch module is in the view of closing position, during work, operating mechanism drives second insulating bar 10 and moves right; Movable cross bar contact 9 reliably is connected with fixed contact seat 7; Operating mechanism drives first insulating bar 6 and makes first vacuum switch tube 2 be in closing position then, and vacuum switch module just is in the combined floodgate service position like this, the load operate as normal.
As shown in Figure 2, for this vacuum switch module is in the view of isolated location, when load is broken down; In the time of need be with this road load isolation; Operating mechanism drives main switch first insulating bar 6, makes first vacuum switch tube 2 carry out sub-switching operation, cuts off load current or fault current; Operating mechanism drives second insulating bar 10 again and moves to adjacent with the moving conductive rod end of second vacuum switch tube 15 to the left or rigidly connect and touch the position then, thereby the load fault and the bus of band high-tension electricity are isolated.
As shown in Figure 3; Be in the view of earthing position for this vacuum switch module; When the load fault place need overhaul or need its ground connection because of other reason; Operating mechanism drives second insulating bar 10 again moves movable cross bar contact 9 more to the left, thereby makes the second vacuum open pipe 15 be in closing position.Simultaneously, auxiliary earth rod 18 is inserted into auxiliary earth terminal 13 endoporus, and the two ends of fuse and the load that links to each other with the one of which end at this moment can safe replacing fuses with regard to reliable ground like this.
Above embodiment has just set forth basic principle of the present invention and characteristic; The present invention is not limited by the foregoing description; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various variations and change, and these variations and change all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.

Claims (10)

1. a ring main unit is used vacuum switch module; Comprise housing and be arranged at first vacuum switch tube, the movable cross bar contact in the housing and be used for second vacuum switch tube of ground connection; It is characterized in that: the static conductive rod of said first vacuum switch tube links to each other with input terminal; Its moving conductive rod links to each other with operating mechanism through first insulating bar; And but moving conductive rod is electrically connected with an end disjunction of movable cross bar contact, and the other end of said movable cross bar contact is connected with outlet terminal, and movable cross bar contact links to each other with operating mechanism through second insulating bar; One end of said outlet terminal connection activity cross bar contact also links to each other with the moving conductive rod of second vacuum switch, and the static conductive rod of said second vacuum switch links to each other with earth terminal.
2. ring main unit according to claim 1 is used vacuum switch module; It is characterized in that: said housing also is built-in with the auxiliary earth terminal; The end that said auxiliary earth terminal is positioned at inside modules has endoporus, and said movable cross bar contact is provided with the auxiliary earth rod suitable with endoporus.
3. ring main unit according to claim 1 is used vacuum switch module; It is characterized in that: the moving conductive rod of said first vacuum switch tube through first be flexible coupling be fixed on the housing bearing on the fixed contact seat link to each other; Said fixed contact seat is provided with projection, and the sliding tray that said projection and movable cross bar contact upper end are offered is suitable.
4. ring main unit according to claim 1 is used vacuum switch module; It is characterized in that: said housing internal fixation is provided with the fixed contact rod; Said movable cross bar contact lower end has and the suitable sliding tray of fixed contact rod; Movable cross bar contact slidably is set on the horizontally disposed fixed contact rod, and said fixed contact rod one end links to each other with outlet terminal, and the other end is flexible coupling through second and links to each other with the moving conductive rod of second vacuum switch tube.
5. use vacuum switch module according to claim 3 or 4 described ring main units, it is characterized in that: the sliding surface in the said sliding tray is provided with the elastic conduction fingertip.
6. ring main unit according to claim 1 is used vacuum switch module, it is characterized in that: the moving conductive rod place of said second vacuum switch tube is provided with sluice separating spring.
7. ring main unit according to claim 1 is used vacuum switch module, it is characterized in that: said input terminal and outlet terminal place are provided with inductance loop.
8. ring main unit according to claim 1 is used vacuum switch module, it is characterized in that: said housing is processed by epoxy resin or Merlon or nylon, and housing is connected with the earth terminal of ring main unit, and its outer surface is coated with electric conducting material.
9. ring main unit according to claim 1 is used vacuum switch module, it is characterized in that: be coated with resilient coating on the said first true switching tube and second vacuum switch tube.
10. use vacuum switch module according to claim 3 or 4 described ring main units, it is characterized in that: said first is flexible coupling and second is flexible coupling and is flexible coupling for copper strips.
CN201210009828.4A 2012-01-13 2012-01-13 Vacuum switch module for looped network cabinet Expired - Fee Related CN102543558B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210009828.4A CN102543558B (en) 2012-01-13 2012-01-13 Vacuum switch module for looped network cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210009828.4A CN102543558B (en) 2012-01-13 2012-01-13 Vacuum switch module for looped network cabinet

Publications (2)

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CN102543558A true CN102543558A (en) 2012-07-04
CN102543558B CN102543558B (en) 2014-10-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104167341A (en) * 2014-07-21 2014-11-26 杨明 Solid insulating ring main unit fuse with one-shaft double-grounding interlocking device
CN105244795A (en) * 2015-10-09 2016-01-13 维龙(镇江)电工研究院有限公司 Single-phase module for load switch-fuse combination unit
CN106531546A (en) * 2016-12-07 2017-03-22 国网宁夏电力公司吴忠供电公司 Direct-acting vacuum switch of ring main unit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02257536A (en) * 1989-03-29 1990-10-18 Mitsubishi Electric Corp Gas insulated vacuum switch
CN201038601Y (en) * 2007-04-06 2008-03-19 扬州新概念电气有限公司 Small-sized vacuum ring main unit
CN201829815U (en) * 2010-10-15 2011-05-11 江苏帝一集团有限公司 Small intelligent vacuum ring-network cabinet
CN201853645U (en) * 2010-11-19 2011-06-01 北京电研华源电力技术有限公司 High-voltage vacuum circuit breaker device and solid insulation permanent magnet operating ring network cabinet
CN202502937U (en) * 2012-01-13 2012-10-24 北京京东方真空电器有限责任公司 Vacuum switch module for ring network unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02257536A (en) * 1989-03-29 1990-10-18 Mitsubishi Electric Corp Gas insulated vacuum switch
CN201038601Y (en) * 2007-04-06 2008-03-19 扬州新概念电气有限公司 Small-sized vacuum ring main unit
CN201829815U (en) * 2010-10-15 2011-05-11 江苏帝一集团有限公司 Small intelligent vacuum ring-network cabinet
CN201853645U (en) * 2010-11-19 2011-06-01 北京电研华源电力技术有限公司 High-voltage vacuum circuit breaker device and solid insulation permanent magnet operating ring network cabinet
CN202502937U (en) * 2012-01-13 2012-10-24 北京京东方真空电器有限责任公司 Vacuum switch module for ring network unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104167341A (en) * 2014-07-21 2014-11-26 杨明 Solid insulating ring main unit fuse with one-shaft double-grounding interlocking device
CN104167341B (en) * 2014-07-21 2017-04-19 杨明 Solid insulating ring main unit fuse with one-shaft double-grounding interlocking device
CN105244795A (en) * 2015-10-09 2016-01-13 维龙(镇江)电工研究院有限公司 Single-phase module for load switch-fuse combination unit
CN106531546A (en) * 2016-12-07 2017-03-22 国网宁夏电力公司吴忠供电公司 Direct-acting vacuum switch of ring main unit

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Granted publication date: 20141022

Termination date: 20220113