CN101599387B - Electric railway 2*55kV solid sealing type vacuum circuit breaker - Google Patents
Electric railway 2*55kV solid sealing type vacuum circuit breaker Download PDFInfo
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- CN101599387B CN101599387B CN200910098506XA CN200910098506A CN101599387B CN 101599387 B CN101599387 B CN 101599387B CN 200910098506X A CN200910098506X A CN 200910098506XA CN 200910098506 A CN200910098506 A CN 200910098506A CN 101599387 B CN101599387 B CN 101599387B
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Abstract
The invention relates to an electric railway 2*55kV solid sealing type vacuum circuit breaker, which comprises a bracket, a bipolar solid sealing type vacuum circuit breaker arranged on the bracket and a circuit breaker mechanism operation box, wherein both poles of the bipolar solid sealing type vacuum circuit breaker are arranged in a mutual independent way; in each pole of the bipolar solid sealing type vacuum circuit breaker, a vacuum arc extinguish chamber is a solid sealing pole rod vacuum arc extinguish chamber and diecasted in a solid sealing pole rod which is arranged on a supporting insulating cylinder; a moving contact of the solid sealing pole rod vacuum arc extinguish chamber is flexibly connected with a conductive clamp which is flexibly connected with a lower outgoing line seat; the upper end of the solid sealing pole rod is an upper outgoing line and the lower end is the lower outgoing line seat; the moving contact of the solid sealing pole rod vacuum arc extinguish chamber is connected with an insulating pull-rod of the moving contact which is positioned in the supporting insulating cylinder; and the insulating pull-rod of the moving contact of each pole is connected with the circuit breaker mechanism operation box. The vacuum circuit breaker has high pressurization grade and good reliability of products, and is convenient to maintain.
Description
Technical field
The present invention relates to a kind of 2 * 55kV electric railway vacuum circuit breaker special of AT supply power mode.
Background technology
At present 2 * 27.5kV circuit breaker of traction substation of electric railway, section post, AT institute is to utilize three-phase 35kV product in the electric power system to change a social system to form; Because the AT supply power mode is to utilize autotransformer that contact line is supplied power; 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 goes 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; Units concerned such as Environmental Protection in China department and State Power Corporation have proposed specifically to limit SF6 gas emissions and the suggestion of cutting down use amount, and 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 successful development 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.
Summary of the invention
, 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 present invention provides 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 solution adopted for the present invention to solve the technical problems 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 said bipolar solid sealing type vacuum circuit breaker;
Each utmost point of said 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; Said vacuum interrupter is the pole vacuum interrupter; Said vacuum interrupter die casting is in pole; Pole places on the supports insulative tube, and the moving contact of said pole vacuum interrupter and said conductive clip are flexible coupling, and said conductive clip is flexible coupling and is connected with said outlet seat down; The upper end of said pole is last outlet seat, and the lower end of said pole is following outlet seat; Said upward outlet seat is the input terminal of circuit breaker, and said outlet seat down is the outlet terminal of circuit breaker; The moving contact of said pole vacuum interrupter is connected with the moving contact insulated tension pole, and said moving contact insulated tension pole is positioned at the supports insulative tube;
The moving contact insulated tension pole of said each utmost point all is connected with the breaker mechanism control box.
As a preferred scenario: the circuit breaker operating mechanism box including circuit breakers input crank arm shaft crank arm breaker input, connecting rod, opening spring, institutional output crank arm and the spring mechanism, wherein each pole insulated rod moving contacts the upper end of the small hinged crank arm, two small crank arm were associated with a lower end of said circuit breaker connected to the input shaft is fixed crank arm, the upper end of the circuit breaker input crank arm and turn the circuit breaker input arm shaft is fixedly connected, the circuit breaker input crank arm end of the lower end of the connecting rod is hinged at one end of said opening spring crank arm connected to the input of the circuit breaker and the other end connected to the tank, the other end of said link mechanism output crank arm hinged crank arm and the mechanism output spring actuator linkage, said spring actuator mounted on the circuit breaker operating mechanism box.
Further, said bipolar fixed sealing type circuit breaker is installed in the top of support, and said breaker mechanism control box is positioned at the below of bipolar solid sealing type vacuum circuit breaker.
Beneficial effect of the present invention mainly shows: 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. 1 is electric railway 2 * 55kV solid sealing type vacuum circuit breaker profile sketch map provided by the invention;
Fig. 2 is electric railway 2 * 55kV solid sealing type vacuum circuit breaker structural representation provided by the invention;
Fig. 3 is the structural representation of circuit breaker input connecting lever axle.
Embodiment
Below in conjunction with accompanying drawing the present invention 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; Said 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 said bipolar solid sealing type vacuum circuit breaker;
Each utmost point of said bipolar solid sealing type vacuum circuit breaker comprises that outlet seat 11, pole 12, vacuum interrupter 13, conductive clip are flexible coupling 14, outlet seat 15 and supports insulative tube 17 down; Vacuum interrupter 13 is the pole vacuum interrupter, and vacuum interrupter 13 die casting are in sealing the utmost point admittedly
In the post 12; Pole 12 places on the supports insulative tube 17, said conductive clip is installed in the said pole is flexible coupling 14, and said conductive clip is flexible coupling and 14 is connected with said time outlet seat 15; The upper end of said pole is last outlet seat 11, and the lower end of said pole is following outlet seat 15; Said upward outlet seat 11 is the input terminal of circuit breaker, and said outlet seat 15 down is the outlet terminal of circuit breaker.
Connecting the conductive clip soft insulated rod 14 and the movable contact 16 is connected, said movable contact insulated rod 16 is located within the supporting insulating cylinder 17, the circuit breaker operating mechanism box 2 includes knee arm breaker input shaft 23, breaker input crank arm 18, connecting rod 20, the opening spring 19, of the output crank arm 21 and the spring actuator 22, the movable contact of each pole insulated rod 16 and the upper end of the small crank arm 24 hinged, two The lower end of the small crank arm 24 are input to said circuit breaker crank arm shaft 23 fixedly connected to said input circuit breaker crank arm 18 and the upper end of said circuit breaker input crank arm shaft 23 is fixedly connected, turn the circuit breaker input The lower end of the arm 18 of the lever 20 hinged at one end; end of the opening spring 19 and the circuit breaker 18 is connected to the input crank arm and the other end connected to the tank, the other end of the link 20 and the output crank arm 21 hinged mechanism, The actuator output crank arm 21 and spring actuator 22 linkage, said spring actuator 22 is mounted on the circuit breaker operating mechanism box.
Said bipolar fixed sealing type circuit breaker 1 is installed in the top of support 3, and said 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; Through 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, and efficient is high.
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 was in "on" position and prepares separating brake, at this moment the dynamic/static contact of vacuum interrupter was closed.When circuit breaker is received separating brake when order, under the effect of spring operating mechanism 22, lead agency output toggle arm 21, the input connecting lever 18 of circuit breaker is moved clockwise through connecting rod 20; The moving contact insulated tension pole 16 that drives breaker vacuum arc control device 13 simultaneously moves downward; The dynamic and static contact that makes arc control device during charged separation, will produce vacuum arc, because the special construction of contact immediately between contact under the effect of operating mechanism; In the contact gap, produce vertical magnetic field simultaneously; Vertical magnetic field impels vacuum arc to remain diffused, and is evenly distributed on the contact surface burning, keeps 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
All energy storage of the switching-in spring of mechanism and tripping spring 19 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 applies clockwise turning moment with circuit breaker input connecting lever 18 by tripping spring 19, and under the effect of turning moment, mechanism's output toggle arm 21 is driven by connecting rod 20 with circuit breaker input connecting lever 18 and moves clockwise; The moving contact insulated tension pole 16 that drives the breaker vacuum arc control device simultaneously moves downward, until accomplishing 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 applies under the effect of anticlockwise turning moment with circuit breaker input connecting lever 18 at switching-in spring; Mechanism's output toggle arm 21 is driven by connecting rod 20 with circuit breaker input connecting lever 18 and carries out the counter clockwise direction motion, and the moving contact insulated tension pole 16 that drives the breaker vacuum arc control device simultaneously moves upward, until accomplishing closing operation.
Claims (3)
1. electric railway 2 * 55kV solid sealing type vacuum circuit breaker; It is characterized in that: said 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 said bipolar solid sealing type vacuum circuit breaker;
Each utmost point of said 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; Said vacuum interrupter is the pole vacuum interrupter; Said vacuum interrupter die casting is in pole; Pole places on the supports insulative tube, and the moving contact of said pole vacuum interrupter is flexible coupling with said conductive clip and is connected, and said conductive clip is flexible coupling and is connected with said outlet seat down; The upper end of said pole is last outlet seat, and the lower end of said pole is following outlet seat; Said upward outlet seat is the input terminal of circuit breaker, and said outlet seat down is the outlet terminal of circuit breaker; The moving contact of said pole vacuum interrupter is connected with the moving contact insulated tension pole, and said moving contact insulated tension pole is positioned at the supports insulative tube;
The moving contact insulated tension pole of said each utmost point all is connected with the breaker mechanism control box.
(2) according to claim 1, wherein the electric railway 2 × 55kV solid seal vacuum circuit breaker, wherein: said circuit breaker mechanism operating box including circuit breakers input crank arm shaft crank arm breaker input, connecting rod, sub- brake spring, institutional output crank arm and the spring actuator, the movable contact each pole insulated rod with a small flute hinged upper arm, two small crank arm were associated with a lower end of said circuit breaker input crank arm shaft fixing connecting said input circuit breaker with the upper end of crank arm crank arm breaker input shaft is fixedly connected to the lower end of the crank arm breaker input end of the connecting rod is hinged at one end of said opening spring breaker input Abduction Connect the other end of the arm with the box connected to the other end of said link output crank arm hinge mechanism, the mechanism output crank arm with spring actuator linkage, said spring actuator mounted on the circuit breaker mechanism operating inside .
3. according to claim 1 or claim 2 electric railway 2 * 55kV solid sealing type vacuum circuit breaker, it is characterized in that: said bipolar fixed sealing type circuit breaker is installed in the top of support, and said 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 |
|---|---|---|---|
| CN200910098506XA CN101599387B (en) | 2009-05-13 | 2009-05-13 | Electric railway 2*55kV solid sealing type vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910098506XA CN101599387B (en) | 2009-05-13 | 2009-05-13 | Electric railway 2*55kV solid sealing type vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN101599387A CN101599387A (en) | 2009-12-09 |
| CN101599387B true CN101599387B (en) | 2012-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910098506XA Active CN101599387B (en) | 2009-05-13 | 2009-05-13 | Electric railway 2*55kV solid sealing type vacuum circuit breaker |
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| CN106128844A (en) * | 2016-08-22 | 2016-11-16 | 屈荐映 | A kind of outdoor AC high-voltage porcelain knob breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2488164Y (en) * | 2001-02-26 | 2002-04-24 | 湖南天一科技股份有限公司平江电器分公司 | ZW 11-12/2000-31.5 outdoor ac high-voltage vacuum circuit breaker |
| CN2567757Y (en) * | 2002-09-04 | 2003-08-20 | 西安华力铁路电气公司 | Permanent mechanism vacuum circuit breaker |
| JP2006080036A (en) * | 2004-09-13 | 2006-03-23 | Toshiba Corp | Vacuum circuit breaker |
| CN2840427Y (en) * | 2005-11-11 | 2006-11-22 | 四川电器有限责任公司 | Special single-phase double-pole breaker hand cart for railway |
| CN201435342Y (en) * | 2009-05-13 | 2010-03-31 | 宁波甬新东方电气有限公司 | 2*55 kV solid-sealed type vacuum circuit breaker of electrified railway |
-
2009
- 2009-05-13 CN CN200910098506XA patent/CN101599387B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2488164Y (en) * | 2001-02-26 | 2002-04-24 | 湖南天一科技股份有限公司平江电器分公司 | ZW 11-12/2000-31.5 outdoor ac high-voltage vacuum circuit breaker |
| CN2567757Y (en) * | 2002-09-04 | 2003-08-20 | 西安华力铁路电气公司 | Permanent mechanism vacuum circuit breaker |
| JP2006080036A (en) * | 2004-09-13 | 2006-03-23 | Toshiba Corp | Vacuum circuit breaker |
| CN2840427Y (en) * | 2005-11-11 | 2006-11-22 | 四川电器有限责任公司 | Special single-phase double-pole breaker hand cart for railway |
| CN201435342Y (en) * | 2009-05-13 | 2010-03-31 | 宁波甬新东方电气有限公司 | 2*55 kV solid-sealed type vacuum circuit breaker of electrified railway |
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| Publication number | Publication date |
|---|---|
| CN101599387A (en) | 2009-12-09 |
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