CN201435342Y - 2*55 kV solid-sealed type vacuum circuit breaker of electrified railway - Google Patents
2*55 kV solid-sealed type vacuum circuit breaker of electrified railway Download PDFInfo
- Publication number
- CN201435342Y CN201435342Y CN2009201197670U CN200920119767U CN201435342Y CN 201435342 Y CN201435342 Y CN 201435342Y CN 2009201197670 U CN2009201197670 U CN 2009201197670U CN 200920119767 U CN200920119767 U CN 200920119767U CN 201435342 Y CN201435342 Y CN 201435342Y
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- Prior art keywords
- circuit breaker
- pole
- solid
- type vacuum
- moving contact
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- 238000007789 sealing Methods 0.000 claims description 27
- 239000007787 solid Substances 0.000 claims description 24
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000004512 die casting Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002964 excitative effect Effects 0.000 description 2
- 208000032767 Device breakage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses a 2*55kV solid-sealed type vacuum circuit breaker of an electrified railway. The solid-sealed type vacuum circuit breaker comprises a bracket, a double-pole solid-sealed type vacuum circuit breaker arranged on the bracket and a circuit breaker mechanism operation box, wherein two poles of the double-pole solid-sealed type vacuum circuit breaker are mutually independent;in each pole of the double-pole solid-sealed type vacuum circuit breaker, a vacuum interrupter is a solid-sealed pole vacuum interrupter and is die cast in the solid-sealed pole; the solid-sealed pole is arranged on a support insulation cylinder; a moving contact of the solid-sealed pole vacuum interrupter is flexibly connected with a conductive clip; the conductive clip is flexibly connected with a lower outlet seat; the upper end of the solid-sealed pole is an upper outlet seat; the lower end of the solid-sealed pole is the lower outlet seat; the moving contact of the solid-sealed pole vacuum interrupter is connected with an insulation pull rod of the moving contact; the insulation pull rod of the moving contact is arranged in the support insulation cylinder; and the insulation pull rodof the moving contact of each pole is connected with the circuit breaker mechanism operation box. The solid-sealed type vacuum circuit breaker has the advantages of high voltage-withstanding level, convenient maintenance and good reliability of the product.
Description
Technical field
The utility model relates to a kind of 2 * 55kV electric railway vacuum circuit breaker special of AT supply power mode.
Background technology
Present traction substation of electric railway, section post, AT 2 * 27.5kV circuit breaker be to utilize the three-phase 35kV product transformation of the way in the electric power system to form, because the AT supply power mode is to utilize autotransformer that contact line is powered, when autotransformer two coil generations turn-to-turn or layer short circuit, voltage withstand class is equivalent to the requirement of withstand voltage of power system device 42kV, between 35kV and 72.5kV electrical voltage system grade, the characteristics and the power department of single-phase direct ground connection working method of railway and short-term load (duty) variation simultaneously are different greatly, cause voltage fluctuation big, so the circuit breaker of the higher voltage withstand class of 2 * 27.5kV equipment active demand of electric railway AT supply power mode go to substitute it.The high-voltage switch gear of the above electric pressure of 35kV mainly still is the SF6 switch both at home and abroad at present, and SF6 belongs to the compound that the Kyoto Protocol prescribed limits is used, the suggestion that units concerned such as Environmental Protection in China department and State Power Corporation have proposed specifically to limit the SF6 gas emissions and cut down use amount, vacuum switch will substitute the SF6 switch in the long run; Domestic in addition vacuum interrupter manufacturer successfully develops the vacuum interrupter of the above electric pressure of 72.5kV, the opportunity of therefore developing 2 * 55kV electric railway vacuum circuit-breaker is full maturity, and its research and development successfully will produce profound significance to railway construction.
The shortcoming that existing 2 * 27.5kV circuit breaker exists: voltage withstand class is low, troublesome maintenance, be affected by the external environment greatly, and product reliability is poor.
The utility model content
, troublesome maintenance low for the voltage withstand class that overcomes existing 2 * 27.5kV circuit breaker, be affected by the external environment big, the deficiency of product reliability difference, the utility model provide a kind of high voltage withstand class, easy to maintenance, electric railway 2 * 55kV solid sealing type vacuum circuit breaker that product reliability is good.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of electric railway 2 * 55kV solid sealing type vacuum circuit breaker comprises support, rack-mount bipolar solid sealing type vacuum circuit breaker and breaker mechanism control box, the separate layout in the two poles of the earth of described bipolar solid sealing type vacuum circuit breaker;
Each utmost point of described bipolar solid sealing type vacuum circuit breaker comprises that outlet seat, pole, vacuum interrupter, conductive clip are flexible coupling, descend outlet seat and supports insulative tube, described vacuum interrupter is the pole vacuum interrupter, described vacuum interrupter die casting is in pole, pole places on the supports insulative tube, the moving contact of described pole vacuum interrupter and described conductive clip are flexible coupling, described conductive clip is flexible coupling and is connected with described outlet seat down, the upper end of described pole is last outlet seat, and the lower end of described pole is following outlet seat; Described upward outlet seat is the input terminal of circuit breaker, and described outlet seat down is the outlet terminal of circuit breaker; The moving contact of described pole vacuum interrupter is connected with the moving contact insulated tension pole, and described moving contact insulated tension pole is positioned at the supports insulative tube;
The moving contact insulated tension pole of described each utmost point all is connected with the breaker mechanism control box.
As preferred a kind of scheme: described breaker mechanism control box comprises circuit breaker input connecting lever axle, circuit breaker input connecting lever, connecting rod, tripping spring, mechanism's output toggle arm and spring operating mechanism, the moving contact insulated tension pole of described each utmost point and the upper end of little Abduction arm are hinged, all fixedly connected with described circuit breaker input connecting lever axle in the lower end of two little Abduction arms, fixedly connected with described circuit breaker input connecting lever axle in the upper end of described circuit breaker input connecting lever, the lower end of described circuit breaker input connecting lever and an end of connecting rod are hinged, described tripping spring one end is connected the other end with circuit breaker input connecting lever and is connected with casing, the other end of described connecting rod and mechanism's output toggle arm are hinged, described mechanism output toggle arm and spring operating mechanism interlock, described spring operating mechanism is installed in the breaker mechanism control box.
Further, described bipolar fixed sealing type circuit breaker is installed in the top of support, and described breaker mechanism control box is positioned at the below of bipolar solid sealing type vacuum circuit breaker.
The beneficial effects of the utility model mainly show: 2 * 55kV solid sealing type vacuum circuit breaker has reached the specific withstand voltage insulating requirements of electric railway AT supply power mode to switch; adopt epoxy resin to seal insulation admittedly and be applicable to indoor outer various environment; fully without SF6 gas; favourable and environmental protection, it is simple in structure, cost is low, dependable performance.
Description of drawings
Fig. 3 is the structural representation of circuit breaker input connecting lever axle.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1～Fig. 3, a kind of electric railway 2 * 55kV solid sealing type vacuum circuit breaker, comprise support 3, be installed in bipolar solid sealing type vacuum circuit breaker and breaker mechanism control box on the support 3, described bipolar solid sealing type vacuum circuit breaker 1 is connected with breaker mechanism control box 2, the separate layout in the two poles of the earth of described bipolar solid sealing type vacuum circuit breaker;
Each utmost point of described bipolar solid sealing type vacuum circuit breaker comprises outlet seat 11, pole 12, vacuum interrupter 13, conductive clip is flexible coupling 14, following outlet seat 15 and supports insulative tube 17, vacuum interrupter 13 is the pole vacuum interrupter, vacuum interrupter 13 die casting are in pole 12, pole 12 places on the supports insulative tube 17, described conductive clip is installed in the described pole is flexible coupling 14, described conductive clip is flexible coupling and 14 is connected with described down outlet seat 15, the upper end of described pole is last outlet seat 11, and the lower end of described pole is following outlet seat 15; Described upward outlet seat 11 is the input terminal of circuit breaker, and described outlet seat 15 down is the outlet terminal of circuit breaker.
Described conductive clip is flexible coupling and 14 is connected with moving contact insulated tension pole 16, described moving contact insulated tension pole 16 is positioned at described supports insulative tube 17, described breaker mechanism control box 2 comprises circuit breaker input connecting lever axle 23, circuit breaker input connecting lever 18, connecting rod 20, tripping spring 19, mechanism's output toggle arm 21 and spring operating mechanism 22, the moving contact insulated tension pole 16 of described each utmost point is hinged with the upper end of little Abduction arm 24, all fixedly connected with described circuit breaker input connecting lever axle 23 in the lower end of two little Abduction arms 24, fixedly connected with described circuit breaker input connecting lever axle 23 in the upper end of described circuit breaker input connecting lever 18, the lower end of described circuit breaker input connecting lever 18 and an end of connecting rod 20 are hinged; Described tripping spring 19 1 ends are connected the other end with circuit breaker input connecting lever 18 and are connected with casing, the other end of described connecting rod 20 and mechanism's output toggle arm 21 are hinged, described mechanism output toggle arm 21 and spring operating mechanism 22 interlocks, described spring operating mechanism 22 is installed in the breaker mechanism control box.
Described bipolar fixed sealing type circuit breaker 1 is installed in the top of support 3, and described breaker mechanism control box 2 is positioned at the below of circuit breaker 1.
As shown in Figure 2, be bipolar solid sealing type vacuum circuit breaker structural representation: arc-extinguishing chamber of circuit breaker is the pole vacuum interrupter, and vacuum interrupter 13 die casting are in pole 12, and pole 12 places on the supports insulative tube 17.Spring operating mechanism 22 is located in mechanism's control box 2, by connecting rod 20 mechanism's output toggle arm 21 and circuit breaker input connecting lever 18 (tripping spring connecting lever 18), tripping spring 19 are linked together, connecting rod 20, circuit breaker input connecting lever 18, tripping spring connecting lever 18, tripping spring 19 place in mechanism's control box.This layout makes the compact conformation of circuit breaker, and volume is little, adopts direct connected mode, and not only transmission link is few, and the stress of circuit breaker is good, the efficient height.
The pole of circuit breaker respectively by last outlet seat 11, vacuum interrupter 12, conductive clip be flexible coupling 14, outlet seat 15 and supports insulative tube 17 are formed down.
The arc extinguishing of circuit breaker adopts the vacuum extinction mode, has the connecting-disconnecting function height, the life-span is long, non-maintaining and the advantage of environmental protection.
The principle of its arc extinguishing is:
When circuit breaker is in "on" position and prepares separating brake, the dynamic/static contact closure of vacuum interrupter at this moment.When circuit breaker is received the separating brake order, under the effect of spring operating mechanism 22, lead agency output toggle arm 21, by connecting rod 20 the input connecting lever 18 of circuit breaker is moved clockwise, the moving contact insulated tension pole 16 that drives breaker vacuum arc control device 13 simultaneously moves downward, make the moving of arc control device, fixed contact is under the effect of operating mechanism during charged separation, between contact, will produce vacuum arc immediately, because the special construction of contact, in the contact gap, produce vertical magnetic field simultaneously, vertical magnetic field impels vacuum arc to remain diffused, and be evenly distributed on the contact surface burning, keep lower arc voltage.At the electric current of conducting nature during through zero crossing, remaining in ion, electronics and metallic vapour in the gap will be compound rapidly or condense upon on contact surface and the radome, and the dielectric strength between the arc control device fracture is recovered rapidly, arc extinction, and the galvanic circle is cut off.
Its operation principle is:
1) sub-switching operation
The switching-in spring of mechanism and tripping spring 19 equal own energy storage during combined floodgate, it is charged after switching winding is received the separating brake order, trip electromagnet is by excitatory, mechanism's output toggle arm 21 and circuit breaker input connecting lever 18 apply clockwise turning moment by tripping spring 19, under the effect of turning moment, mechanism's output toggle arm 21 and circuit breaker input connecting lever 18 are driven by connecting rod 20 and move clockwise, the moving contact insulated tension pole 16 that drives the breaker vacuum arc control device simultaneously moves downward, until finishing sub-switching operation.
2) closing operation
It is charged after closing coil is received the order of closing a floodgate, making electromagnet is by excitatory, mechanism's output toggle arm 21 and circuit breaker input connecting lever 18 apply under the effect of anticlockwise turning moment at switching-in spring, mechanism's output toggle arm 21 and circuit breaker input connecting lever 18 are driven by connecting rod 20 and carry out the counter clockwise direction motion, the moving contact insulated tension pole 16 that drives the breaker vacuum arc control device simultaneously moves upward, until finishing closing operation.
Claims (3)
1, a kind of electric railway 2 * 55kV solid sealing type vacuum circuit breaker, it is characterized in that: described electric railway 2 * 55kV solid sealing type vacuum circuit breaker comprises support, rack-mount bipolar solid sealing type vacuum circuit breaker and breaker mechanism control box, the separate layout in the two poles of the earth of described bipolar solid sealing type vacuum circuit breaker;
Each utmost point of described bipolar solid sealing type vacuum circuit breaker comprises that outlet seat, pole, vacuum interrupter, conductive clip are flexible coupling, descend outlet seat and supports insulative tube, described vacuum interrupter is the pole vacuum interrupter, described vacuum interrupter die casting is in pole, pole places on the supports insulative tube, the moving contact of described pole vacuum interrupter and described conductive clip are flexible coupling, described conductive clip is flexible coupling and is connected with described outlet seat down, the upper end of described pole is last outlet seat, and the lower end of described pole is following outlet seat; Described upward outlet seat is the input terminal of circuit breaker, and described outlet seat down is the outlet terminal of circuit breaker; The moving contact of described pole vacuum interrupter is connected with the moving contact insulated tension pole, and described moving contact insulated tension pole is positioned at the supports insulative tube;
The moving contact insulated tension pole of described each utmost point all is connected with the breaker mechanism control box.
2, electric railway 2 * 55kV solid sealing type vacuum circuit breaker as claimed in claim 1, it is characterized in that: described breaker mechanism control box comprises circuit breaker input connecting lever axle, circuit breaker input connecting lever, connecting rod, tripping spring, mechanism's output toggle arm and spring operating mechanism, the moving contact insulated tension pole of described each utmost point and the upper end of little Abduction arm are hinged, all fixedly connected with described circuit breaker input connecting lever axle in the lower end of two little Abduction arms, fixedly connected with described circuit breaker input connecting lever axle in the upper end of described circuit breaker input connecting lever, the lower end of described circuit breaker input connecting lever and an end of connecting rod are hinged, described tripping spring one end is connected the other end with circuit breaker input connecting lever and is connected with casing, the other end of described connecting rod and mechanism's output toggle arm are hinged, described mechanism output toggle arm and spring operating mechanism interlock, described spring operating mechanism is installed in the breaker mechanism control box.
3, electric railway 2 * 55kV solid sealing type vacuum circuit breaker as claimed in claim 1 or 2, it is characterized in that: described bipolar fixed sealing type circuit breaker is installed in the top of support, and described breaker mechanism control box is positioned at the below of bipolar solid sealing type vacuum circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201197670U CN201435342Y (en) | 2009-05-13 | 2009-05-13 | 2*55 kV solid-sealed type vacuum circuit breaker of electrified railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201197670U CN201435342Y (en) | 2009-05-13 | 2009-05-13 | 2*55 kV solid-sealed type vacuum circuit breaker of electrified railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201435342Y true CN201435342Y (en) | 2010-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201197670U Expired - Lifetime CN201435342Y (en) | 2009-05-13 | 2009-05-13 | 2*55 kV solid-sealed type vacuum circuit breaker of electrified railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201435342Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599387B (en) * | 2009-05-13 | 2012-06-06 | 宁波甬新东方电气有限公司 | Electric railway 2*55kV solid sealing type vacuum circuit breaker |
| CN108357395A (en) * | 2018-03-07 | 2018-08-03 | 常州安凯特电缆有限公司 | Railway power system and outdoor parallel modular device for railway power system |
-
2009
- 2009-05-13 CN CN2009201197670U patent/CN201435342Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599387B (en) * | 2009-05-13 | 2012-06-06 | 宁波甬新东方电气有限公司 | Electric railway 2*55kV solid sealing type vacuum circuit breaker |
| CN108357395A (en) * | 2018-03-07 | 2018-08-03 | 常州安凯特电缆有限公司 | Railway power system and outdoor parallel modular device for railway power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100331 Effective date of abandoning: 20090513 |