CN103715008A - Longitudinal and transverse composite type vacuum arc-extinguishing chamber contact structure - Google Patents
Longitudinal and transverse composite type vacuum arc-extinguishing chamber contact structure Download PDFInfo
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- CN103715008A CN103715008A CN201310647074.XA CN201310647074A CN103715008A CN 103715008 A CN103715008 A CN 103715008A CN 201310647074 A CN201310647074 A CN 201310647074A CN 103715008 A CN103715008 A CN 103715008A
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Abstract
The invention discloses a longitudinal and transverse composite type vacuum arc-extinguishing chamber contact structure, comprising an anode contact system and a cathode contact system which are identical in structure and are both arranged inside an arc-extinguishing chamber. The tail end of each main conducting rod is provided with a cup base. Each cup base is provided with a transverse magnetic conducting system of a circular cylinder-shaped structure and a longitudinal magnetic conducting system of a circular ring-shaped structure. Each transverse magnetic conducting system is sleeved in the circular ring of the corresponding longitudinal magnetic conducting system. The circuit of each transverse magnetic conducting system and the corresponding longitudinal magnetic conducting system is characterized by parallel structure. When a contact is in a closed state, circuit current mainly flows through the transverse magnetic conducting systems; and when the contact is in an opened state for arc extinguishing, the circuit current mainly flows through the longitudinal magnetic conducting systems. Therefore, the rated current conduction capability of the longitudinal and transverse composite type vacuum arc-extinguishing chamber contact structure is similar to that of a transverse magnetic contact system; and the short circuit current breaking capability of the longitudinal and transverse composite type vacuum arc-extinguishing chamber contact structure is similar to that of a longitudinal magnetic contact system. Thus, the longitudinal and transverse composite type vacuum arc-extinguishing chamber contact structure has a capability of conducting large rated current as well as a capability of breaking large short circuit current.
Description
Technical field
The invention belongs to technical field of vacuum switches, be specifically related to a kind of chamber contact of composite vacuum arc-extinguishing in length and breadth structure.
Background technology
Vacuum interrupter is the key element of vacuum switch, is undertaking the task of extinguish arcs, circuital current to close with cut-offfing be all that contact in vacuum interrupter completes.In order to improve the short circuit interruption ability of arc control device, employing is introduced magnetic field and is controlled electric arc in arc control device, i.e. the field control of electric arc.
In prior art, generally by two kinds of magnetic fields, control electric arc (transverse magnetic field and longitudinal magnetic field): transverse magnetic field control technology is to apply with arc current to flow to vertical magnetic field, make electric arc arc column produce and rotatablely move fast on contact dish, thereby reduce the Partial ablation to contact dish, improve the connecting-disconnecting function of switch; Longitudinal magnetic field control technology is to apply with arc current to flow to identical magnetic field, makes electric arc be evenly distributed in contact surface, avoids electric arc arc column to produce and gather in contact surface, thereby reduces the ablation to contact dish, improves the connecting-disconnecting function of switch.
Owing to adopting the arc quenching chamber structure of transverse magnetic field control technology, be to produce transverse magnetic field by contact dish, the path of electric current in switch is for directly to flow to anode contact by conductive anode rod, through cathode contact, returning to negative electrode conducting rod, current path is shorter, the conducting resistance of construction of switch is less, so the arc quenching chamber structure of employing transverse magnetic field control technology can the larger rated current of conducting.Yet, although transverse magnetic field control technology can make electric arc produce and rotatablely move 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, arc gap ionic medium volume 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 to avoid the ablation of electric arc to 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 large electric current, has greatly alleviated the ablation of contact.And because vacuum arc is diffusion state, when cut-offfing large short circuit current, during current over-zero, the residue plasma of arc gap and metallic vapour density are compared with transverse magnetic field blow-out method and are significantly reduced, and therefore can bear higher recovery voltage.In addition,, owing to not needing to make electric arc high-speed motion, so the much less that is ejected into metallic vapour on radome and drop when adopting transverse magnetic field, the size that can dwindle like this arc control device, reduces costs.Yet be the longitudinal magnetic field being produced by vertical magnetic cup owing to adopting the arc quenching chamber structure of longitudinal magnetic field control technology, the flow through path of electric current in switch is for being flowed to vertical magnetic cup cup by conductive anode rod, through the vertical magnetic cup cup of anode, flow to the vertical magnetic contact dish of anode, in cathode side process, flow to negative electrode conducting rod with current path contrary in anode.The path that electric current is flowed through is longer, and during contact closure, the conducting resistance of construction of switch is larger, and thermal losses is larger, 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, a kind of chamber contact of composite vacuum arc-extinguishing in length and breadth structure being used in large specified current lead-through ability and large short circuit current connecting-disconnecting function vacuum circuit-breaker arc extinguishing chamber has been proposed, 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 ofly have the large rated current of conducting and cut-off the chamber contact of the composite vacuum arc-extinguishing in length and breadth structural system of large short circuit current ability.
To achieve these goals, the technical solution adopted in the present invention is: comprise that structure is identical, and be all arranged at anode contact system and cathode contact system in arc control device; Wherein, in anode contact system and cathode contact system, include the leading electric pole that is arranged on anode one side or negative electrode one side, the end of leading electric pole is all provided with cup, on cup, be 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 of being made by 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.
On described vertical magnetic cup, offer and can make vertical magnetic cup produce longitudinal magnetic field and elastically-deformable helicla flute, spiral fluted number is 6～15.
Described helicla flute and horizontal angle are 15 °～27 °.
On described vertical magnetic contact dish, offer 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 being set in indulges in 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, between horizontal magnetic contact dish and vertical magnetic contact dish, leaves gap; The external diameter of vertical magnetic contact dish is identical with the external diameter of vertical magnetic cup.
On described horizontal magnetic contact dish, have the broken line groove for generation of transverse magnetic field.
The Xing Zhuan Wei Swastika font of described broken line groove.
Compared with prior art, the present invention has following beneficial effect:
The present invention arranges anode contact system and the cathode contact system that structure is identical in arc control device, and wherein each contact system comprises leading electric pole, cup, horizontal magnetic conductive system and vertical magnetic conductive system; At contact when closing state, circuital current Main Current is through horizontal magnetic conductive system, in process at contact in arc extinguishing separately, circuital current Main Current is through vertical magnetic conductive system, therefore the rated current ducting capacity of composite vacuum arc-extinguishing chamber contact structural system is similar to horizontal magnetic contact system in length and breadth for this kind, short circuit current connecting-disconnecting function is similar to vertical magnetic contact system, is a kind ofly have the large rated current of conducting and cut-off the chamber contact of the composite vacuum arc-extinguishing in length and breadth structural system of large short circuit current ability.
Further, the present invention has large specified current lead-through ability: at switch when closing state, circuit structure in arc control device is: circuital current is flowed through and is divided into two current branch after anode cup by conductive anode rod: a current branch, for arriving 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 through vertical magnetic cup, to arrive vertical magnetic contact dish by anode cup, then at cathode side, through contrary current path, flows to negative electrode cup.Because horizontal magnetic conductive system and vertical magnetic conductive system are parallel-connection structure on circuit, than 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, closing during contact closing advocates to be born by horizontal magnetic conductive system, thereby the contact resistance between vertical magnetic conductive system Anodic and cathode contact dish is larger than horizontal magnetic conductive system, so closing status line electric current at switch is mainly to circulate by horizontal magnetic conductive system, thereby 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: at switch during in separated position, owing to having the strain of the vertical magnetic cup of helicla flute in vertical magnetic conductive system, in the process of opening at contact, contact dish with respect to horizontal magnetic conductive system, contact dish in vertical magnetic conductive system has larger shake back and forth, thereby vertical magnetic conductive system contact dish is separated in horizontal magnetic contact dish after separating, and electric arc will be at vertical magnetic contact dish up-igniting.Arc current will mainly circulate by vertical magnetic conductive system, produces larger longitudinal magnetic field intensity, thereby 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 horizontal magnetic contact of the present invention dish card;
Fig. 3 is the structural representation of the vertical magnetic contact dish card of the present invention;
Structural representation when Fig. 4 is the vertical magnetic contact dish of the present invention and horizontal magnetic contact dish coaxial line layout.
Wherein, 1 take electric pole 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:
Referring to Fig. 1 to Fig. 4, the present invention includes structure identical, and be all arranged at anode contact system and cathode contact system in arc control device; Wherein, in anode contact system and cathode contact system, include the leading electric pole 1 that is arranged on anode one side or negative electrode one side, the end of leading electric pole 1 is all provided with cup 2, on cup 2, be 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 by 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 of being made by 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.On vertical magnetic cup 3, offer and can make vertical magnetic cup 3 produce longitudinal magnetic field and elastically-deformable helicla flute.Choose reasonable is carried out in size and the requirement of vertical magnetic cup body structure mechanical strength of the longitudinal magnetic field intensity that the number of the spiral line of rabbet joint can produce as required, such as 6,8,10,12 etc.; Choose reasonable is carried out in the size of the 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, such as 15 degree, 18 degree, 20 degree, 27 degree etc.On vertical magnetic contact dish 6, offer 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-radial arrangement, except adopting straight-line groove 8, can also on contact dish, adopt other measures that reduce eddy current.
As shown in Figure 4, horizontal magnetic conductive system comprises being set in indulges in 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 lines; The external diameter of horizontal magnetic contact dish 5 is less than the internal diameter of vertical magnetic contact dish 6, between horizontal magnetic contact dish 5 and vertical magnetic contact dish 6, leaves gap; 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, on horizontal magnetic contact dish 5, have the broken line groove 7 for generation of transverse magnetic field.The Xing Zhuan Wei Swastika font of broken line groove 7, horizontal magnetic contact dish structure need to produce the magnetic field of vertical and arc control device axis, and therefore, every contact dish structure that can produce transverse magnetic field all can.
Operation principle of the present invention and the course of work:
Structure of contact terminal system is when closure state, under the effect of contact closure power, will there is elastic deformation in vertical magnetic cup 3, thereby contact closure power will mainly contain horizontal magnetic contact dish 5 and bear, thereby 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 is flowed through the path of horizontal magnetic conductance system much smaller than the path of the vertical magnetic conductive system of flowing through as seen from Figure 1, thereby the volume resistance of horizontal magnetic conductive system is less than the volume resistance of vertical magnetic conductive system.Comprehensive above 2 points, under closure state circuital current mainly by the conducting of horizontal magnetic conductive system, thereby there is the stronger rated current ducting capacity that is similar to horizontal magnetic contact system.
Structure of contact terminal system is in opening the process of arc extinguishing, due to the elastic deformation of vertical magnetic cup 3, with respect to horizontal magnetic contact dish 5, vertical magnetic contact dish 6 is in the process of contact separation, can there is larger shake back and forth, thereby can be later than 5 separation of horizontal magnetic contact dish, so electric arc can be at contact dish 6 up-ignitings.In the process of the separated arc extinguishing of contact system, current path will mainly pass through vertical magnetic conductive system conducting, thereby have the stronger short circuit current breaking capacity that is similar to vertical magnetic contact system.
Above content is only explanation technological thought of the present invention; can not limit protection scope of the present invention with this; every technological thought proposing according to the present invention, any change of doing on technical scheme basis, within all falling into the protection range of the claims in the present invention book.
Claims (10)
1. a composite vacuum arc-extinguishing chamber contact structure in length and breadth, is characterized in that: comprise that structure is identical, and be all arranged at anode contact system and cathode contact system in arc control device; Wherein, in anode contact system and cathode contact system, include the leading electric pole (1) that is arranged on anode one side or negative electrode one side, the end of leading electric pole (1) is all provided with cup (2), on cup (2), be 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.
2. the chamber contact of composite vacuum arc-extinguishing in length and breadth structure according to claim 1, it is characterized in that: described vertical magnetic conductive system comprises the vertical magnetic cup (3) of the circular ring of being made by 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).
3. the chamber contact of composite vacuum arc-extinguishing in length and breadth structure according to claim 2, it is characterized in that: on described vertical magnetic cup (3), offer and can make vertical magnetic cup (3) produce longitudinal magnetic field and elastically-deformable helicla flute, spiral fluted number is 6～15.
4. the chamber contact of composite vacuum arc-extinguishing in length and breadth structure according to claim 3, is characterized in that: described helicla flute and horizontal angle are 15 °～27 °.
5. according to the chamber contact of the composite vacuum arc-extinguishing in length and breadth structure described in claim 3 or 4, it is characterized in that: on described vertical magnetic contact dish (6), offer 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).
6. according to the chamber contact of the composite vacuum arc-extinguishing in length and breadth structure described in claim 2 or 3, it is characterized in that: described horizontal magnetic conductive system comprises being set in indulges in magnetic cup (3), and being fixed on the horizontal magnetic conductance electric pole (4) 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).
7. the chamber contact of composite vacuum arc-extinguishing in length and breadth structure according to claim 6, is characterized in that: described leading electric pole (1), cup (2), horizontal magnetic conductance electric pole (4) are all made of copper; Horizontal magnetic contact dish (5) is made by chromiumcopper with vertical magnetic contact dish (6).
8. the chamber contact of composite vacuum arc-extinguishing in length and breadth structure according to claim 6, is characterized in that: described 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), between horizontal magnetic contact dish (5) and vertical magnetic contact dish (6), leaves gap; The external diameter of vertical magnetic contact dish (6) is identical with the external diameter of vertical magnetic cup (3).
9. the chamber contact of composite vacuum arc-extinguishing in length and breadth structure according to claim 7, is characterized in that: on described horizontal magnetic contact dish (5), have the broken line groove (7) for generation of transverse magnetic field.
10. the chamber contact of composite vacuum arc-extinguishing in length and breadth structure according to claim 9, is characterized in that: the Xing Zhuan Wei Swastika font of described broken line groove (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| 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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| CN103715008A true CN103715008A (en) | 2014-04-09 |
| CN103715008B CN103715008B (en) | 2016-03-30 |
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Cited By (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 |
| CN112530735A (en) * | 2020-12-18 | 2021-03-19 | 西安高压电器研究院有限责任公司 | Double-loop contact structure and vacuum arc-extinguishing chamber |
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| 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 |
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| 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 |
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2013
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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Cited By (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 |
| CN112530735A (en) * | 2020-12-18 | 2021-03-19 | 西安高压电器研究院有限责任公司 | Double-loop contact structure and vacuum arc-extinguishing chamber |
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| CN103715008B (en) | 2016-03-30 |
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