CN103715008B - One is composite vacuum arc-extinguishing chamber contact structure in length and breadth - Google Patents
One is composite vacuum arc-extinguishing chamber contact structure in length and breadth Download PDFInfo
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- CN103715008B CN103715008B CN201310647074.XA CN201310647074A CN103715008B CN 103715008 B CN103715008 B CN 103715008B CN 201310647074 A CN201310647074 A CN 201310647074A CN 103715008 B CN103715008 B CN 103715008B
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Abstract
The invention discloses one composite vacuum arc-extinguishing chamber contact structure in length and breadth, comprise structure identical, and the anode contact system be all arranged in arc control device and cathode contact system; The end of leading electric pole is all provided with cup, and cup is provided with the horizontal magnetic conductive system of cylindrical-shaped structure and the vertical magnetic conductive system of circular ring, horizontal magnetic conductive system is all set in the annulus of vertical magnetic conductive system; The circuit feature of horizontal magnetic conductive system and vertical magnetic conductive system is parallel-connection structure.Contact be in close state time, circuital current mainly flows through horizontal magnetic conductive system, be in the process of separately arc extinguishing at contact, circuital current mainly flows through vertical magnetic conductive system, therefore the rated current ducting capacity of this kind composite vacuum arc-extinguishing chamber contact structural system is in length and breadth similar to horizontal magnetic contact system, short circuit current connecting-disconnecting function is similar to vertical magnetic contact system, is a kind of chamber contact of composite vacuum arc-extinguishing in length and breadth structural system having the large rated current of conducting and cut-off large short circuit current ability.
Description
Technical field
The invention belongs to technical field of vacuum switches, be specifically related to one composite vacuum arc-extinguishing chamber contact structure in length and breadth.
Background technology
Vacuum interrupter is the key element of vacuum switch, is responsible for the task of extinguish arcs, circuital current to close with cut-offfing be all that contact by vacuum interrupter has come.In order to improve the short circuit interruption ability of arc control device, adopting and introducing magnetic field to control electric arc in arc control device, be i.e. the field control of electric arc.
General by two kinds of Magnetic control electric arcs (transverse magnetic field and longitudinal magnetic field) in prior art: transverse magnetic field control technology applies to flow to vertical magnetic field with arc current, electric arc arc column is made to produce rotary motion fast on contact dish, thus the Partial ablation reduced contact dish, improve the connecting-disconnecting function of switch; Longitudinal magnetic field control technology applies to flow to identical magnetic field with arc current, makes electric arc comparatively be evenly distributed in contact surface, avoids electric arc arc column to produce in contact surface and gather, thus reduce the ablation to contact dish, improve the connecting-disconnecting function of switch.
Produce transverse magnetic field by contact dish owing to adopting the arc quenching chamber structure of transverse magnetic field control technology, electric current path is in the switch for directly to flow to anode contact by conductive anode rod, cathode guide electric pole is being returned through cathode contact, current path is shorter, the conducting resistance of construction of switch is less, so adopt the arc quenching chamber structure of transverse magnetic field control technology can the larger rated current of conducting.But, although transverse magnetic field control technology can make electric arc produce rotary motion fast in contact surface, but because electric arc is still for gathering electric arc, still comparatively serious to the ablation on arc contact surface, when cut-offfing large short circuit current, during current over-zero, in arc gap, plasma density is still higher, so can restrike when recovery voltage is higher, causes failure of interruption.Secondly due to the high-speed motion of electric arc, have plasma, metallic vapour and drop and be ejected on radome, therefore, in order to reduce and avoid electric arc to the ablation of radome, adopt the arc control device diameter of transverse magnetic field structure of contact terminal larger.
Longitudinal magnetic field in longitudinal magnetic field control technology can suppress gathering of vacuum arc, makes vacuum arc still can maintain diffusion state when big current, dramatically reduces the ablation of contact.And due to vacuum arc be diffusion state, when cut-offfing large short circuit current, the residue plasma of arc gap and the remarkable reduction compared with transverse magnetic field blow-out method of metallic vapour density during current over-zero, therefore, it is possible to bear higher recovery voltage.In addition, owing to not needing to make electric arc high-speed motion, so the metallic vapour be ejected on radome and drop are than much less during employing transverse magnetic field, the size of arc control device can be reduced like this, reduce costs.But owing to adopting the arc quenching chamber structure of longitudinal magnetic field control technology to be the longitudinal magnetic field produced by vertical magnetic cup, magnetic cup cup is indulged for being flowed to by conductive anode rod in the electric current path that flows through in the switch, indulge magnetic cup cup through anode to flow to anode and indulge magnetic contact dish, flow to cathode guide electric pole at cathode side through the current path contrary with anode.The path that electric current flows through is longer, and during contact closure, the conducting resistance of construction of switch is comparatively large, and thermal losses is comparatively large, so adopt the rated current of the arc quenching chamber structure of longitudinal magnetic field control technology to be restricted.
Summary of the invention
The present invention is directed to deficiency of the prior art, propose a kind of chamber contact of composite vacuum arc-extinguishing in length and breadth structure be used in large specified current capacity and large short circuit current connecting-disconnecting function vacuum circuit-breaker arc extinguishing chamber, the rated current ducting capacity of this structure of contact terminal is similar to horizontal magnetic contact system, short circuit current connecting-disconnecting function is similar to vertical magnetic contact system, is a kind of chamber contact of composite vacuum arc-extinguishing in length and breadth structural system having the large rated current of conducting and cut-off large short circuit current ability.
To achieve these goals, the technical solution adopted in the present invention is: comprise structure identical, and the anode contact system be all arranged in arc control device and cathode contact system; Wherein, the leading electric pole being arranged on anode side or negative electrode side is included in anode contact system and cathode contact system, the end of leading electric pole is all provided with cup, cup is provided with the horizontal magnetic conductive system of cylindrical-shaped structure and the vertical magnetic conductive system of circular ring, horizontal magnetic conductive system is all set in the annulus of vertical magnetic conductive system; The circuit feature of horizontal magnetic conductive system and vertical magnetic conductive system is parallel-connection structure.
Described vertical magnetic conductive system comprises the vertical magnetic cup of the circular ring be made up of stainless steel, and vertical magnetic cup is arranged on cup, and the end of vertical magnetic cup is provided with the vertical magnetic contact dish of ring-type, and the circuit feature of vertical magnetic cup and vertical magnetic contact dish is cascaded structure.
Described vertical magnetic cup offers vertical magnetic cup can be made to produce longitudinal magnetic field and elastically-deformable helicla flute, spiral fluted number is 6 ~ 15.
Described helicla flute and horizontal angle are 15 ° ~ 27 °.
Described vertical magnetic contact dish offers some for reducing the straight-line groove of eddy current on vertical magnetic contact dish, and the number of straight-line groove is identical with spiral fluted number on vertical magnetic cup; Straight-line groove is evenly distributed on vertical magnetic contact dish.
Described horizontal magnetic conductive system comprises and being set in vertical magnetic cup, and is fixed on the horizontal magnetic conductance electric pole on cup, and the end of horizontal magnetic conductance electric pole is provided with horizontal magnetic contact dish; The circuit feature of horizontal magnetic conductance electric pole and horizontal magnetic contact dish is cascaded structure.
Described leading electric pole, cup, horizontal magnetic conductance electric pole become by copper; Horizontal magnetic contact dish and vertical magnetic contact dish are made by chromiumcopper.
Described horizontal magnetic contact dish and vertical magnetic contact dish coaxial line are arranged; The external diameter of horizontal magnetic contact dish is less than the internal diameter of vertical magnetic contact dish, leaves gap between horizontal magnetic contact dish and vertical magnetic contact dish; The external diameter of vertical magnetic contact dish is identical with the external diameter of vertical magnetic cup.
Described horizontal magnetic contact dish has the broken line groove for generation of transverse magnetic field.
The shape Wei Swastika font of described broken line groove.
Compared with prior art, the present invention has following beneficial effect:
The present invention arranges the identical anode contact system of structure and cathode contact system in arc control device, and wherein each contact system comprises leading electric pole, cup, horizontal magnetic conductive system and vertical magnetic conductive system; Contact be in close state time, circuital current mainly flows through horizontal magnetic conductive system, be in the process of separately arc extinguishing at contact, circuital current mainly flows through vertical magnetic conductive system, therefore the rated current ducting capacity of this kind composite vacuum arc-extinguishing chamber contact structural system is in length and breadth similar to horizontal magnetic contact system, short circuit current connecting-disconnecting function is similar to vertical magnetic contact system, is a kind of chamber contact of composite vacuum arc-extinguishing in length and breadth structural system having the large rated current of conducting and cut-off large short circuit current ability.
Further, the present invention has large specified current capacity: switch be in close state time, circuit structure in arc control device is: circuital current is divided into two current branch after flowing through anode cup by conductive anode rod: a current branch, for arrive horizontal magnetic contact dish by anode cup through horizontal magnetic conductance electric pole, then flows to negative electrode cup at cathode side through contrary current path; Another current branch is arrive vertical magnetic contact dish by anode cup through vertical magnetic cup, then flows to negative electrode cup at cathode side through contrary current path.Because horizontal magnetic conductive system and vertical magnetic conductive system are parallel-connection structure on circuit, compared to horizontal magnetic conductive system, the current path of vertical magnetic conductive system is longer, conducting resistance is larger, and make vertical magnetic cup produce strain owing to having helicla flute in vertical magnetic conductive system, the power that closes during contact closing is primarily of horizontal magnetic conductive System Take, thus large than horizontal magnetic conductive system of vertical contact resistance between magnetic conductive system Anodic and cathode contact dish, mainly circulated by horizontal magnetic conductive system so close status line electric current at switch, thus this structure of contact terminal system has the rated current ducting capacity similar to horizontal magnetic contact system.
Further, the present invention has large short circuit current connecting-disconnecting function: when switch is in separated position, owing to having the strain that helicla flute indulges magnetic cup in vertical magnetic conductive system, in the process that contact is opened, relative to the contact dish of horizontal magnetic conductive system, contact dish in vertical magnetic conductive system has larger shake back and forth, thus vertical magnetic conductive system contact dish is separated in after horizontal magnetic contact dish is separated, and electric arc will at vertical magnetic contact dish up-igniting.Arc current will circulate mainly through vertical magnetic conductive system, produces larger longitudinal magnetic field intensity, thus has the short circuit current connecting-disconnecting function similar to vertical magnetic contact system.
Accompanying drawing explanation
Fig. 1 is overall structure cutaway view of the present invention;
Fig. 2 is the structural representation of the present invention's horizontal magnetic contact dish card;
Fig. 3 is the structural representation that the present invention indulges magnetic contact dish card;
Fig. 4 is the structural representation that the present invention indulges when magnetic contact dish and horizontal magnetic contact dish coaxial line are arranged.
Wherein, 1 electric pole is taken as the leading factor; 2 is cup; 3 is vertical magnetic cup; 4 is horizontal magnetic conductance electric pole; 5 horizontal magnetic contact dishes; 6 vertical magnetic contact dishes; 7 is broken line groove; 8 is straight-line groove.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation:
See Fig. 1 to Fig. 4, the present invention includes structure identical, and the anode contact system be all arranged in arc control device and cathode contact system; Wherein, the leading electric pole 1 being arranged on anode side or negative electrode side is included in anode contact system and cathode contact system, the end of leading electric pole 1 is all provided with cup 2, cup 2 is provided with the horizontal magnetic conductive system of cylindrical-shaped structure and the vertical magnetic conductive system of circular ring, horizontal magnetic conductive system is all set in the annulus of vertical magnetic conductive system; The circuit feature of horizontal magnetic conductive system and vertical magnetic conductive system is parallel-connection structure.Leading electric pole 1, cup 2, horizontal magnetic conductance electric pole 4 are all made of copper; Vertical magnetic cup 3 is made up of stainless steel material, and horizontal magnetic contact dish 5 is made by chromiumcopper with vertical magnetic contact dish 6.
As shown in figures 1 and 3, vertical magnetic conductive system comprises the vertical magnetic cup 3 of the circular ring be made up of stainless steel, vertical magnetic cup 3 is arranged on cup 2, and the end of vertical magnetic cup 3 is provided with the vertical magnetic contact dish 6 of ring-type, and vertical magnetic cup 3 is cascaded structure with the circuit feature of vertical magnetic contact dish 6.Vertical magnetic cup 3 offers can make vertical magnetic cup 3 produce longitudinal magnetic field and elastically-deformable helicla flute.The size of longitudinal magnetic field intensity that the number of the spiral line of rabbet joint can produce as required and the requirement of vertical magnetic cup body structure mechanical strength carry out choose reasonable, such as 6,8,10,12 etc.; The size of longitudinal magnetic field intensity that helicla flute and horizontal angle (helix fluting angle) can produce according to actual needs and the requirement of vertical magnetic cup body structure mechanical strength carry out choose reasonable, such as 15 degree, 18 degree, 20 degree, 27 degree etc.Vertical magnetic contact dish 6 offers 6 ~ 15 for reducing the straight-line groove 8 of eddy current on vertical magnetic contact dish 6, and the number of straight-line groove 8 is identical with spiral fluted number on vertical magnetic cup 3; Straight-line groove 8 is evenly distributed on vertical magnetic contact dish 6; Straight-line groove can be radial arrangement or non-static fields is arranged, except adopting straight-line groove 8, can also adopt other measures reducing eddy current on contact dish.
As shown in Figure 4, horizontal magnetic conductive system comprises and being set in vertical magnetic cup 3, and is fixed on the horizontal magnetic conductance electric pole 4 on cup 2, and the end of horizontal magnetic conductance electric pole 4 is provided with horizontal magnetic contact dish 5; Horizontal magnetic conductance electric pole 4 is cascaded structure with the circuit feature of horizontal magnetic contact dish 5.Horizontal magnetic contact dish 5 is arranged with vertical magnetic contact dish 6 coaxial line; The external diameter of horizontal magnetic contact dish 5 is less than the internal diameter of vertical magnetic contact dish 6, leaves gap between horizontal magnetic contact dish 5 and vertical magnetic contact dish 6; The external diameter of vertical magnetic contact dish 6 is identical with the external diameter of vertical magnetic cup 3.As shown in Figure 2, horizontal magnetic contact dish 5 has the broken line groove 7 for generation of transverse magnetic field.The shape of broken line groove 7 is Swastika font, and horizontal magnetic contact dish structure needs to produce magnetic field that is vertical and arc control device axis, therefore, and every contact dish structure that can produce transverse magnetic field.
Operation principle of the present invention and the course of work:
When structure of contact terminal system is in closure state, under the effect of contact closure power, will elastic deformation be there is in vertical magnetic cup 3, thus contact closure power will mainly contain horizontal magnetic contact dish 5 bears, thus the contact resistance between horizontal magnetic contact dish 5 anode and cathode is less than the contact resistance between vertical magnetic contact dish 6 anode and cathode, and electric current flows through the path of horizontal magnetic conductance system much smaller than the path flowing through vertical magnetic conductive system as seen from Figure 1, thus the volume resistance of horizontal magnetic conductive system is less than the volume resistance of vertical magnetic conductive system.Comprehensive above 2 points, circuital current is mainly through the conducting of horizontal magnetic conductive system in closed state, thus has the stronger rated current ducting capacity being similar to horizontal magnetic contact system.
Structure of contact terminal system in the process opening arc extinguishing, due to the elastic deformation of vertical magnetic cup 3, relative to horizontal magnetic contact dish 5, in the process that vertical magnetic contact dish 6 is separated at contact, larger shake back and forth can be there is, thus horizontal magnetic contact dish 5 can be later than be separated, so electric arc can at contact dish 6 up-igniting.Be separated at contact system in the process of arc extinguishing, current path mainly through the conducting of vertical magnetic conductive system, thus will have the stronger short circuit current breaking capacity being similar to vertical magnetic contact system.
Above content is only and technological thought of the present invention is described; protection scope of the present invention can not be limited with this; every technological thought proposed according to the present invention, any change that technical scheme basis is done, within the protection range all falling into claims of the present invention.
Claims (3)
1. a composite vacuum arc-extinguishing chamber contact structure in length and breadth, is characterized in that: comprise structure identical, and the anode contact system be all arranged in arc control device and cathode contact system; Wherein, the leading electric pole (1) being arranged on anode side or negative electrode side is included in anode contact system and cathode contact system, the end of leading electric pole (1) is all provided with cup (2), cup (2) is provided with the horizontal magnetic conductive system of cylindrical-shaped structure and the vertical magnetic conductive system of circular ring, horizontal magnetic conductive system is all set in the annulus of vertical magnetic conductive system; The circuit feature of horizontal magnetic conductive system and vertical magnetic conductive system is parallel-connection structure;
Described vertical magnetic conductive system comprises the vertical magnetic cup (3) of the circular ring be made up of stainless steel, vertical magnetic cup (3) is arranged on cup (2), the end of vertical magnetic cup (3) is provided with the vertical magnetic contact dish (6) of ring-type, and vertical magnetic cup (3) is cascaded structure with the circuit feature of vertical magnetic contact dish (6);
Described vertical magnetic cup (3) offers vertical magnetic cup (3) can be made to produce longitudinal magnetic field and elastically-deformable helicla flute, spiral fluted number is 6 ~ 15;
Described vertical magnetic contact dish (6) offers some for reducing the straight-line groove (8) of the upper eddy current of vertical magnetic contact dish (6), and the number of straight-line groove (8) is identical with the upper spiral fluted number of vertical magnetic cup (3); Straight-line groove (8) is evenly distributed on vertical magnetic contact dish (6);
Described horizontal magnetic conductive system comprises and is set in vertical magnetic cup (3), and the horizontal magnetic conductance electric pole (4) be fixed on cup (2), the end of horizontal magnetic conductance electric pole (4) is provided with horizontal magnetic contact dish (5); Horizontal magnetic conductance electric pole (4) is cascaded structure with the circuit feature of horizontal magnetic contact dish (5); Leading electric pole (1), cup (2), horizontal magnetic conductance electric pole (4) are all made of copper; Horizontal magnetic contact dish (5) and vertical magnetic contact dish (6) are made by chromiumcopper; Horizontal magnetic contact dish (5) has the broken line groove (7) for generation of transverse magnetic field, the shape Wei Swastika font of broken line groove (7).
2. the chamber contact of composite vacuum arc-extinguishing in length and breadth structure according to claim 1, is characterized in that: described helicla flute and horizontal angle are 15 ° ~ 27 °.
3. the chamber contact of composite vacuum arc-extinguishing in length and breadth structure according to claim 1, is characterized in that: described horizontal magnetic contact dish (5) and vertical magnetic contact dish (6) coaxial line are arranged; The external diameter of horizontal magnetic contact dish (5) is less than the internal diameter of vertical magnetic contact dish (6), leaves gap between horizontal magnetic contact dish (5) and vertical magnetic contact dish (6); The external diameter of vertical magnetic contact dish (6) is identical with the external diameter of vertical magnetic cup (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310647074.XA CN103715008B (en) | 2013-12-03 | 2013-12-03 | One is composite vacuum arc-extinguishing chamber contact structure in length and breadth |
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| CN201310647074.XA CN103715008B (en) | 2013-12-03 | 2013-12-03 | One is composite vacuum arc-extinguishing chamber contact structure in length and breadth |
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| CN103715008A CN103715008A (en) | 2014-04-09 |
| CN103715008B true CN103715008B (en) | 2016-03-30 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320999A (en) * | 2018-04-02 | 2018-07-24 | 西安交通大学 | A kind of transverse cross composite vacuum arc-extinguishing chamber contact structure |
| CN110828230A (en) * | 2019-11-13 | 2020-02-21 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Longitudinal magnetic contact structure of vacuum arc extinguish chamber |
| CN112530735B (en) * | 2020-12-18 | 2022-12-13 | 西安高压电器研究院股份有限公司 | Double-loop contact structure and vacuum arc extinguish chamber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5133870A (en) * | 1974-06-18 | 1976-03-23 | Westinghouse Electric Corp | SHINKUKAIRO SHADANKI |
| US4210790A (en) * | 1976-06-09 | 1980-07-01 | Hitachi, Ltd. | Vacuum-type circuit interrupter |
| CN2796072Y (en) * | 2005-05-19 | 2006-07-12 | 山东晨鸿电工有限责任公司 | Solid seal polar pole for vacuum circuit breaker |
| CN1981354A (en) * | 2004-07-05 | 2007-06-13 | Abb研究有限公司 | Vacuum interrupter and contact arrangement for a vacuum interrupter |
| CN101582348A (en) * | 2009-06-05 | 2009-11-18 | 山东晨鸿电气有限公司 | Low-voltage large-current vacuum arc extinguishing chamber |
| CN202712045U (en) * | 2012-07-25 | 2013-01-30 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Novel longitudinal magnetic coil structure of vacuum arc extinguishing chamber |
| CN103189950A (en) * | 2010-09-24 | 2013-07-03 | Abb技术股份公司 | Electrical contact arrangement for vacuum interrupter arrangement |
-
2013
- 2013-12-03 CN CN201310647074.XA patent/CN103715008B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5133870A (en) * | 1974-06-18 | 1976-03-23 | Westinghouse Electric Corp | SHINKUKAIRO SHADANKI |
| US4210790A (en) * | 1976-06-09 | 1980-07-01 | Hitachi, Ltd. | Vacuum-type circuit interrupter |
| CN1981354A (en) * | 2004-07-05 | 2007-06-13 | Abb研究有限公司 | Vacuum interrupter and contact arrangement for a vacuum interrupter |
| CN2796072Y (en) * | 2005-05-19 | 2006-07-12 | 山东晨鸿电工有限责任公司 | Solid seal polar pole for vacuum circuit breaker |
| CN101582348A (en) * | 2009-06-05 | 2009-11-18 | 山东晨鸿电气有限公司 | Low-voltage large-current vacuum arc extinguishing chamber |
| CN103189950A (en) * | 2010-09-24 | 2013-07-03 | Abb技术股份公司 | Electrical contact arrangement for vacuum interrupter arrangement |
| CN202712045U (en) * | 2012-07-25 | 2013-01-30 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Novel longitudinal magnetic coil structure of vacuum arc extinguishing chamber |
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