CN102543558B - Vacuum switch module for looped network cabinet - Google Patents
Vacuum switch module for looped network cabinet Download PDFInfo
- Publication number
- CN102543558B CN102543558B CN201210009828.4A CN201210009828A CN102543558B CN 102543558 B CN102543558 B CN 102543558B CN 201210009828 A CN201210009828 A CN 201210009828A CN 102543558 B CN102543558 B CN 102543558B
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- CN
- China
- Prior art keywords
- vacuum switch
- switch module
- looped network
- network cabinet
- rod
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- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 230000003068 static effect Effects 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004677 Nylon Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000001012 protector Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000009422 external insulation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Gas-Insulated Switchgears (AREA)
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
Technical field
The present invention relates to a kind of high voltage switching device, relate in particular to a kind of vacuum switch module for looped network cabinet.
Background technology
Ring main unit is that one group of high voltage switchgear is contained in steel sheet metal cabinet or makes the electric equipment of assembled compartment ring network power supply unit, it is the important switchgear of ring network power supply and terminal power supply, its core adopts on-load switch and fuse, have simple in structure, volume is little, price is low, can improve the advantages such as power supply parameter and performance and power supply safety.At present, in the power distribution station of load center and box-type substation, for improving power supply reliability, in exchanging 10KV distribution network, use ring main unit to carry out control and protection; Ring main unit is generally divided into air insulation and SF6 insulate two kinds, 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 rises and controls and protective effect; In 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 SF6 formula.Switch in ring main unit, General Requirements three stations, cut off load, buffer circuit, reliable ground.Air-generating, air pressing type and SF6 formula on-load switch are easily realized three stations, yet SF6 gas is the important component part of greenhouse gas, it uses and has been subject to more and more stricter restriction, vacuum switch has become the main flow of high-voltage switch gear, and vacuum switch is because fracture is apart from little, for security consideration, it cut-offs, do not make isolation fracture, so generally can add an isolating switch and vacuum switch series winding with the ring main unit of vacuum switch, to form isolation fracture, for dwindling the volume of ring main unit and improving reliability, the Switch main body in ring main unit is generally made module.
Current disclosed vacuum switch module for looped network cabinet exists defect separately, uses two stations that only have of direct-operated isolating switch; Use very difficult the accomplishing of swing type isolating switch to seal completely, electrical breakdown fault easily occurs after making moist; And for the vacuum switch module of switch-fuse combination, fuse two ends generally only have one end ground connection, do not meet standard-required, as require the equal ground connection in two ends also to need to increase extra operating mechanism, thereby make device more complicated at present, and cost is higher.
Summary of the invention
The object of the invention is to for the problems referred to above, a kind of vacuum switch module for looped network cabinet that can make fuse two ends reliable ground during with three station direct-operated isolating switchs and for combined electrical apparatus is provided.
The object of the invention is to be achieved through the following technical solutions:
A kind of vacuum switch module for looped network cabinet, comprise housing and be arranged at the first vacuum switch tube in housing, movable cross bar contact and for the second vacuum switch tube of ground connection, the static conductive rod of described the first vacuum switch tube is connected with input terminal, its moving conductive rod is connected with operating mechanism by the first insulating bar, and moving conductive rod can be electrically connected to one end of movable cross bar contact in disjunction, the other end of described movable cross bar contact is connected with outlet terminal, and movable cross bar contact is connected with operating mechanism by the second insulating bar, one end of described outlet terminal connection activity cross bar contact is also connected with the moving conductive rod of the second vacuum switch, the static conductive rod of described the second vacuum switch is connected with earth terminal.
Optionally, when described vacuum switch module for looped network cabinet and fuse are used in combination, in described housing, be also provided with auxiliary earth terminal, one end that described auxiliary earth terminal is positioned at inside modules has endoporus, on described movable cross bar contact, be provided with the auxiliary earth rod suitable with endoporus, when vacuum switch module is during in ground state, auxiliary earth rod is inserted into ground connection in the endoporus of auxiliary earth terminal, make fuse two ends reliable ground, safer, and when vacuum switch module for looped network cabinet is only used as circuit breaker or on-load switch, its outlet terminal is directly connected with load, now, vacuum switch module does not need to arrange auxiliary earth rod and auxiliary earth terminal.
Further, the moving conductive rod of described the first vacuum switch tube is flexible coupling and is connected with the fixed contact seat being fixed on housing bearing by first, on described fixed contact seat, is provided with projection, and the sliding tray that described projection and movable cross bar contact upper end are offered is suitable.
Further, in described housing, be fixedly installed fixed contact rod, described movable cross bar contact lower end has the sliding tray suitable with fixed contact rod, movable cross bar contact is slidably set on horizontally disposed fixed contact rod, described fixed contact rod one end is connected with outlet terminal, and the other end is flexible coupling and is connected with the moving conductive rod of the second vacuum switch tube by second.
Preferably, on the sliding surface in described sliding tray, be provided with elastic conduction fingertip.
Preferably, the moving conductive rod place of described the second vacuum switch tube is provided with sluice separating spring, this sluice separating spring ejects the moving contact of the second vacuum switch tube, like this when vacuum switch module is in closing a floodgate or during isolation, making the dynamic/static contact of the second vacuum switch tube in reliable open position.
Preferably, in order to monitor bus and load, whether have electricity, at input terminal and outlet terminal place, be provided with inductance loop, this inductance loop is connected with the supervising device of ring main unit by wire.
Preferably, described housing is made by the material with good insulating performance and mechanical strength properties, further preferred, described housing is made by epoxy resin or Merlon or nylon, and further preferred, described housing is made by epoxide resin material, and in order further to improve fail safe, in the housing outer surface of this vacuum switch module for looped network cabinet, be coated with electric conducting material, and it is connected with the earth terminal of ring main unit, thus the fail safe while having improved maintenance.
Preferably, on described the first vacuum switch tube and the second vacuum switch tube, be coated with resilient coating, this resilient coating is that independent part is mounted on vacuum switch tube outside, or with the disposable vacuum switch tube outside that is coated on of injection technique.
Preferably, described first is flexible coupling and second is flexible coupling and is flexible coupling for copper strips.
Beneficial effect of the present invention is that described vacuum switch module for looped network cabinet can be realized ring main unit separating brake, isolation, ground connection, closing function, efficiently solves the problem that traditional direct-operated isolating switch only has two stations; And by setting up auxiliary earth terminal, can when for combined electrical apparatus, make fuse two ends reliable ground; And the various inserts of vacuum switch module are built in an insulation shell, volume is little, reliability is high, housing adopts the epoxide resin material with good insulating performance and mechanical strength properties, good insulation preformance, it is connected also surface spraying electric conducting material outside with the earth terminal of ring main unit, thus the fail safe while having improved maintenance; In addition, the sluice separating spring that the second vacuum switch tube moving conductive rod place arranges can guarantee that vacuum switch module is when combined floodgate or isolated location, the second vacuum switch tube is in reliable open position, the elastic conduction fingertip arranging on sliding surface in sliding tray increases electric conductivity, the inductance loop that input terminal and outlet terminal place arrange can monitor bus and whether load has electricity, guarantees safety.
Accompanying drawing explanation
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is vacuum switch module for looped network cabinet closing position view of the present invention;
Fig. 2 is vacuum switch module for looped network cabinet of the present invention isolated location view;
Fig. 3 is vacuum switch module for looped network cabinet earthing position view of the present invention.
In figure:
1, input terminal; 2, the first vacuum switch tube; 3, resilient coating; 4, first is flexible coupling; 5, housing; 6, the first insulating bar; 7, fixed contact seat; 8, elastic conduction fingertip; 9, movable cross bar contact; 10, the second insulating bar; 11, outlet terminal; 12, fixed contact rod; 13, auxiliary earth terminal; 14, earth terminal; 15, the second vacuum switch tube; 16, sluice separating spring; 17, second is flexible coupling; 18, auxiliary earth rod.
Embodiment
Please refer to shown in Fig. 1 to 3, in the present embodiment, a kind of vacuum switch module for looped network cabinet, comprise housing 5 and be arranged at the first vacuum switch tube 2 in housing 5, fixed contact seat 7, movable cross bar contact 9, fixed contact rod 12 and for the second vacuum switch tube 15 of ground connection, the static conductive rod of the first vacuum switch tube 2 is connected with input terminal 1, its moving conductive rod is connected with operating mechanism by the first insulating bar 6, and moving conductive rod is flexible coupling and 4 is connected with the fixed contact seat 7 being fixed on housing 5 bearings by first, on fixed contact seat 7, be provided with projection, the sliding tray that projection and movable cross bar contact 9 upper ends are offered is suitable, on sliding surface in sliding tray, be provided with elastic conduction fingertip 8, movable cross bar contact 9 is connected with operating mechanism by the second insulating bar 10, and its other end and fixed contact rod 12 are slidably connected, on movable cross bar contact 9, be also provided with auxiliary earth rod 18, it is suitable with the endoporus that is arranged on the interior auxiliary earth terminal of housing 5 13 one end, described fixed contact rod 12 right-hand members are connected with outlet terminal 11, its left end is flexible coupling and 17 is connected with the moving conductive rod of the second vacuum switch tube 15 by second, the static conductive rod of the second vacuum switch tube 15 is connected with earth terminal 14, its moving conductive rod place is provided with sluice separating spring 16.
When this vacuum switch module is assembled in ring main unit, during concrete making, the first vacuum switch tube 2 and the coated certain thickness resilient coating 3 of the second vacuum switch tube 15, then 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 housing 5.The vacuum switch tube 2,15 of coated good resilient coating 3 also can be tucked in housing 5 after housing completes; The first vacuum switch tube 2, fixed contact seat 7, movable cross bar contact 9, fixed contact rod 12, the second vacuum switch tube 15 are all arranged horizontally, operating mechanism is arranged in the front portion of vacuum switch module, high-tension electricity inlet wire busbar arrangement is in vacuum switch module top, and outlet cable arrangements is in vacuum switch module below.Operating mechanism operates respectively the first insulating bar 6 and the second insulating bar 10, 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, from outlet terminal 11, draws and is connected with fuse, is finally connected to by electric loading, and the other end of fuse is connected with auxiliary earth terminal 13.
As shown in Figure 1, for the view of this vacuum switch module in closing position, during work, operating mechanism drives the second insulating bar 10 to move right, movable cross bar contact 9 is reliably connected with fixed contact seat 7, then operating mechanism drives the first insulating bar 6 to make the first vacuum switch tube 2 in closing position, and vacuum switch module is just in combined floodgate service position like this, and load is normally worked.
As shown in Figure 2, for the view of this vacuum switch module in isolated location, when load is broken down, while needing Jiang Ci road load isolation, operating mechanism drives main switch the first insulating bar 6, makes the first vacuum switch tube 2 carry out sub-switching operation, cuts off load current or fault current, then operating mechanism drives the second insulating bar 10 to move to the left the adjacent or firm contact position in moving conductive rod end with the second vacuum switch tube 15 again, thereby by load fault and bus isolation with high-tension electricity.
As shown in Figure 3, for the view of this vacuum switch module in earthing position, when load fault place need to overhaul or need its ground connection because of other reason, operating mechanism drives the second insulating bar 10 that movable cross bar contact 9 is moved to the left again again, thereby makes the second vacuum open pipe 15 in closing position.Meanwhile, auxiliary earth rod 18 is inserted into auxiliary earth terminal 13 endoporus, and the connected load in Ji Yuqi one end, two ends of fuse is with regard to reliable ground like this, replacing fuse that now can safety.
Above embodiment has just set forth basic principle of the present invention and characteristic; the present invention is not limited by above-described embodiment; without departing from the spirit and scope of the present invention, the present invention also has various variations and change, and these variations and change all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. a vacuum switch module for looped network cabinet, comprise housing and be arranged at the first vacuum switch tube in housing, movable cross bar contact and for the second vacuum switch tube of ground connection, it is characterized in that: the static conductive rod of described the first vacuum switch tube is connected with input terminal, its moving conductive rod is connected with operating mechanism by the first insulating bar, and moving conductive rod can be electrically connected to one end of movable cross bar contact in disjunction, the other end of described movable cross bar contact is connected with outlet terminal, and movable cross bar contact is connected with operating mechanism by the second insulating bar, one end of described outlet terminal connection activity cross bar contact is also connected with the moving conductive rod of the second vacuum switch, the static conductive rod of described the second vacuum switch is connected with earth terminal.
2. vacuum switch module for looped network cabinet according to claim 1, it is characterized in that: described housing is also built-in with auxiliary earth terminal, one end that described auxiliary earth terminal is positioned at inside modules has endoporus, is provided with the auxiliary earth rod suitable with endoporus on described movable cross bar contact.
3. vacuum switch module for looped network cabinet according to claim 1, it is characterized in that: the moving conductive rod of described the first vacuum switch tube is flexible coupling and is connected with the fixed contact seat being fixed on housing bearing by first, on described fixed contact seat, be provided with projection, the sliding tray that described projection and movable cross bar contact upper end are offered is suitable.
4. vacuum switch module for looped network cabinet according to claim 3, it is characterized in that: in described housing, be fixedly installed fixed contact rod, described movable cross bar contact lower end has the sliding tray suitable with fixed contact rod, movable cross bar contact is slidably set on horizontally disposed fixed contact rod, described fixed contact rod one end is connected with outlet terminal, and the other end is flexible coupling and is connected with the moving conductive rod of the second vacuum switch tube by second.
5. according to the vacuum switch module for looped network cabinet described in claim 3 or 4, it is characterized in that: on the sliding surface in described sliding tray, be provided with elastic conduction fingertip.
6. vacuum switch module for looped network cabinet according to claim 1, is characterized in that: the moving conductive rod place of described the second vacuum switch tube is provided with sluice separating spring.
7. vacuum switch module for looped network cabinet according to claim 1, is characterized in that: described input terminal and outlet terminal place are provided with inductance loop.
8. vacuum switch module for looped network cabinet according to claim 1, is characterized in that: described housing is made 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. vacuum switch module for looped network cabinet according to claim 1, is characterized in that: on described the first true switching tube and the second vacuum switch tube, be coated with resilient coating.
10. vacuum switch module for looped network cabinet according to claim 4, is characterized in that: described first is flexible coupling and second is flexible coupling and is flexible coupling for copper strips.
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)
| Publication Number | Publication Date |
|---|---|
| CN102543558A CN102543558A (en) | 2012-07-04 |
| CN102543558B true CN102543558B (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210009828.4A Expired - Fee Related CN102543558B (en) | 2012-01-13 | 2012-01-13 | Vacuum switch module for looped network cabinet |
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| Country | Link |
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| CN (1) | CN102543558B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (5)
| 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 | A high-voltage vacuum circuit breaker device and a solid-insulated 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 |
-
2012
- 2012-01-13 CN CN201210009828.4A patent/CN102543558B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 | A high-voltage vacuum circuit breaker device and a solid-insulated 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 |
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| CN102543558A (en) | 2012-07-04 |
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Granted publication date: 20141022 Termination date: 20220113 |