CN2290918Y - High-voltage vacuum load switch - Google Patents
High-voltage vacuum load switch Download PDFInfo
- Publication number
- CN2290918Y CN2290918Y CN 96242158 CN96242158U CN2290918Y CN 2290918 Y CN2290918 Y CN 2290918Y CN 96242158 CN96242158 CN 96242158 CN 96242158 U CN96242158 U CN 96242158U CN 2290918 Y CN2290918 Y CN 2290918Y
- Authority
- CN
- China
- Prior art keywords
- switch
- load switch
- load
- current limiting
- limiting fuse
- 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.)
- Expired - Fee Related
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- 229920006351 engineering plastic Polymers 0.000 claims abstract description 3
- 239000012212 insulator Substances 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 3
- 229960000909 sulfur hexafluoride Drugs 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A high-voltage vacuum load switch features that the frame is equipped with SMC engineering plastics as supporting frame insulator, the primary loop is equipped with isolating switch, vacuum arc-extinguishing chamber and current-limiting fuse, and the isolating switch, load switch and grounding switch are assembled on the insulating supporting frame integrally. Has a breaking capacity of not less than 5000A. Convenient operation and reliable action.
Description
The utility model belongs to a kind of high-tension distribution equipment, and particularly a kind of it is the major component of ring network power supply unit as the indoor high-voltage vacuum on-load switch equipment that exchanges 10kV, 50HZ, can be used as control and the protective device accepting and distribute electric energy.
China city was to continue to use the radiation supply network in the past, in case the radiation main line is out of order, will cause large-area power-cuts.In recent years because the developing rapidly of city 10kV power distribution network, the electricity consumption reliability requirement improves constantly, the present distribution network in many cities in the world develops into looped network type by radial pattern or the duplicate supply width of cloth is penetrated electric power system, and above-mentioned two kinds of supply power modes all adopt loop-network switch cabinet as main electric supply installation.The technical equipment Policy Conditions of country, the city net of China should progressively adopt the looped network junction style to transform, and therefore the high voltage load switch to ring main unit and main element 10kV thereof is in great demand.Because of present domestic a large amount of foreign exchange import on-load switches of also can't making, need.On-load switch has four kinds of air-generating, vacuum type, sulphur hexafluoride (SF6) and pressure-operated load switches etc., wherein the air-generating on-load switch is to adopt aerogenesis arc quenching principle (producing the gas arc extinguishing by generating tube under arcing), exist technical parameter low, the disjunction several times just need to change arc-extinguishing tube later on; The vacuum switch price of import high (also have little leakage problem, the arc extinguishing effect is weak); Sulphur hexafluoride also price is high, the time gas leakage problems affect arc extinguishing arranged; External import air pressing type switch is the price height not only, and insulation property are poor, and transfer current does not reach China's standard, complex process, and assembly difficulty is big.
In view of the foregoing, consider again and adopt vacuum load switch and extremely be suitable for ring network power supply with the combined electrical apparatus of fuse, its product has and does not have oily, nontoxic, nothing combustion fire and no explosion hazard, the main purpose of the utility model technology provides a kind of improved high-voltage vacuum load switch, makes not only to have kept above-mentioned advantage, also has compact conformation simultaneously, easy to operate, security of operation, good reliability, and assembling easily, work simplification, the characteristics that cost is low.
The utility model is to adopt following technical scheme to realize: it mainly comprises framework (base plate), insulation support (strutting piece), on-load switch, switch spindle, current limiting fuse, the earthed switch assembly (comprises earthed switch, earthed switch operating axis etc.), close, tripping spring is (as the spring operating mechanism of Switch main body, figure is slightly) and semiaxis mechanism etc. (figure slightly), it is characterized in that: a, on (one) framework, be provided with the SMC engineering plastics as the bracing frame insulator, in the primary circuit, be provided with isolating switch, vacuum interrupter and current limiting fuse, and with described isolating switch, the on-load switch of band vacuum interrupter, earthed switch and fuse are presented, in, following one is assemblied on the insulation bracing frame of framework jointly; Have striker in b, the described current limiting fuse, and directly be contained in the on-load switch to constitute combined electrical apparatus; C, limit a side that DC-AC two-use motor and worm and gear and on-load switch main shaft interoperation also are housed on the right side of on-load switch, on-load switch main shaft near-end also is equipped with shunt release in addition, can be used for realizing electronic on/off switch operation and overload, short-circuit protection.The utility model is worked as closing operation, the energy storage simultaneously of on/off switch spring: during closing operation, the energy of switching-in spring discharges the afterload switch and closes a floodgate, also energy storage of tripping spring simultaneously, but kept by semiaxis mechanism (figure slightly).When carrying out sub-switching operation or protection action, semiaxis mechanism parallel off can be realized sub-switching operation.
Compared with prior art, the utility model connecting-disconnecting function is not less than 5000A, specified transfer current 1550A, take over current 1880A.Have following characteristics in addition:
1, melt Switch main body and operating mechanism, the union isolating switch, on-load switch, earthed switch is in one.
2, fuse directly is contained in vacuum load switch and shuts compact conformation.Have striker operation and release operation dual mode concurrently.
3, spring mechanism, electronic on/off switch, but also manual operation.
The same with prior art in addition, equally also having bus can expand, and is fit to cable and built on stilts turnover line, has strict mechanical interlocking performance, meets characteristics such as " five is anti-" requirement.
Below in conjunction with embodiment concrete structure of the present utility model and operating principle process are described in further detail;
Fig. 1 is a kind of assembly structure schematic diagram of the present utility model;
Fig. 2 is a kind of side of the present utility model assembly structure schematic diagram.
Wherein: 1-isolating switch (moving contact), 2-static contact isolation switch; 3-framework (having base plate), 4-on-load switch vacuum interrupter, 5-current limiting fuse (having striker), 6-shunt release (being the voltage trip device), 7-earthed switch operating axis, 8-on-load switch main shaft, 9-motor, 10-worm and gear, 11-on the bracing frame (strutting piece) that insulate, 12-middle insulation bracing frame, 13-binding post, 14-vacuum switch pull bar, 15-following insulation bracing frame, 16-on-load switch dropout plate, 17-thread off with push and pull system (being a kind of drag link mechanism of linkage type), 18-isolating switch draw bar, 19-earthed switch
With reference to accompanying drawing as can be known, in the lower end of current-limiting fuse the dropout plate is housed, and be that the linkage type drag link mechanism is connected to switch spindle through push and pull system, during fuse blows, after dropping on the dropout plate, striker can main shaft be rotated to realize sub-switching operation by this interlock drag link mechanism conversion.Vacuum load switch of the present utility model is actual to be a kind of high voltage switchgear with three station performances, promptly isolates, and close the pass, ground connection.Isolating switch and earthed switch have visual visible fracture, on-load switch is a Direct Action Type up and down, vacuum load switch and isolating switch have the function of automatic interlock, be that the vacuum load switch branch is had no progeny, the isolating switch automatic disconnection, to form visible fracture, when on-load switch closed a floodgate, isolating switch was closed in advance automatically.The same with prior art, on-load switch and earthed switch also have strict mechanical interlocking and electrical interlock, guaranteed that structurally both misoperation can not occur, that is during on-load switch place closing position, earthed switch can not carry out closing operation, can carry out closing operation after having only the on-load switch disjunction, otherwise, when earthed switch place make position, on-load switch can not close a floodgate.This vacuum load switch can be implemented electronic on/off switch by motor driven, to answer the need of remote control, and also can be by worm and gear by handgrip
(accompanying drawing slightly) carries out manual operation, and the power supply of motor can be obtained by voltage transformer (PT) or other power supplys, and earthed switch is by the action bars dependent manual operation.It is so-called release operation that this vacuum load switch is equiped with shunt release, to realize the need of relaying protection.This vacuum load switch adds that the current limiting fuse of band striker promptly constitutes combined electrical apparatus, has striker operation and release operation dual mode.As long as in major loop, install current transformer, in its secondary circuit, insert current relay, because break-time is very short,, thereby can not damage fuse much smaller than the pre arcing time of fuse, fuse is only used as short-circuit protection.Yun Hang cost has just reduced widely like this.
Claims (2)
1, a kind of high-voltage vacuum load switch mainly comprises framework, is located at insulation bracing frame, on-load switch, switch spindle, current limiting fuse on the framework, and the earthed switch assembly is characterized in that:
A, on framework, be provided with the bracing frame insulator made from the SMC engineering plastics, in the primary circuit, be provided with isolating switch, vacuum interrupter and current limiting fuse, the on-load switch and the earthed switch of described isolating switch, band vacuum interrupter present, in, down one is assemblied on the insulation bracing frame of framework jointly;
Have striker in b, the described current limiting fuse, and directly be contained in and constitute combined electrical apparatus in the on-load switch;
C, limit a side that DC-AC two-use motor and worm and gear and on-load switch main shaft interoperation also are housed, also be equipped with the shunt release that is used to realize electronic on/off switch operation and overload, short-circuit protection at on-load switch main shaft near-end on the right side of on-load switch.
2, high-voltage vacuum load switch according to claim 1 is characterized in that in the lower end of current limiting fuse the dropout plate being housed, and this dropout plate is connected to switch spindle via the interlock drag link mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96242158 CN2290918Y (en) | 1996-10-09 | 1996-10-09 | High-voltage vacuum load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96242158 CN2290918Y (en) | 1996-10-09 | 1996-10-09 | High-voltage vacuum load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2290918Y true CN2290918Y (en) | 1998-09-09 |
Family
ID=33916357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96242158 Expired - Fee Related CN2290918Y (en) | 1996-10-09 | 1996-10-09 | High-voltage vacuum load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2290918Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904166A (en) * | 2011-11-23 | 2013-01-30 | 许继集团有限公司 | Spring operating mechanism for switch cabinet |
-
1996
- 1996-10-09 CN CN 96242158 patent/CN2290918Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904166A (en) * | 2011-11-23 | 2013-01-30 | 许继集团有限公司 | Spring operating mechanism for switch cabinet |
| CN102904166B (en) * | 2011-11-23 | 2016-06-15 | 许继集团有限公司 | A kind of switching cabinet spring operating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |