CN206116279U - Asymmetric vacuum interrupter longitudinal [magnetic] field structure of contact terminal - Google Patents
Asymmetric vacuum interrupter longitudinal [magnetic] field structure of contact terminal Download PDFInfo
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- CN206116279U CN206116279U CN201621185197.1U CN201621185197U CN206116279U CN 206116279 U CN206116279 U CN 206116279U CN 201621185197 U CN201621185197 U CN 201621185197U CN 206116279 U CN206116279 U CN 206116279U
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- coil
- contact piece
- contact
- longitudinal
- static
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Abstract
The utility model discloses an asymmetric vacuum interrupter longitudinal [magnetic] field structure of contact terminal, including static contact piece and moving contact piece, static contact piece and quiet conducting rod fixed connection, the moving contact piece with move conducting rod fixed connection, have the clearance between static contact piece and the moving contact piece, be equipped with the longitudinal [magnetic] field coil between static contact piece and the quiet conducting rod, moving contact piece and move and be equipped with the moving contact outer shield between the conducting rod and cover. The utility model discloses be favorable to reducing the explosion chamber size, make circuit breaker volume miniaturization, the inside longitudinal [magnetic] field that forms is " eccentric formula ", and magnetic field effective area is great, and do benefit to the direct entering of vacuum arc and spread the attitude, explosion chamber long service life, it is good to cut -off the performance.
Description
Technical field
This utility model is related to a kind of component structural of chopper, and in particular to a kind of asymmetric vacuum interrupter longitudinal direction
Magnetic field structure of contact terminal.
Background technology
The development of theoretical and research level with vacuum circuit breaker, researches and develops Large Copacity, miniaturized vacuum under existing situation
Chopper is widely paid close attention in academia, and, used as its core parts, the structure of its contact is to vacuum extinction for vacuum interrupter
The limit connecting-disconnecting function of room serves conclusive effect.Extensively controlled using the current induced magnetic field technology for flowing through contact at present
Vacuum arc processed, is broadly divided into longitudinal magnetic field and transverse magnetic field structure of contact terminal, and the optimization design of wherein longitudinal magnetic field is to improve true
The key measure of empty arc-chutes limit connecting-disconnecting function, it can control the electric arc in the case of high current and, with the presence or absence of state is gathered, protect
Card arc energy is not excessively concentrated and is conducive to cut-offfing carrying current.
In prior art, most of vacuum interrupter longitudinal field contact adopts symmetrical structure, i.e., dynamic and static contact is each
A coil, but traditional moving contact are laid because quality is larger, movement velocity is unfavorable, has influence on vacuum circuit breaker break performance
Raising, for this purpose, patent ZL201020239328.6 proposes asymmetric formula vacuum interrupter longitudinal field contact structure design, have
Effect improves the break performance of chopper, but it has been investigated that, during the design work if electric field intensity is excessive, just must
Internal electric field must be improved by increasing the size increase insulation distance of whole vacuum interrupter, and excessive size is unfavorable for breaking
The optimization design of road device structure, on the other hand, other building blocks of contact are also further improved.
Utility model content
Technical problem to be solved in the utility model is that requirement provides one kind beneficial to vacuum interrupter volume miniaturization,
And effectively lifted arc-chutes service life asymmetric vacuum interrupter longitudinal field contact structure.
To solve above-mentioned technical problem, technical solution of the present utility model is：
A kind of asymmetric vacuum interrupter longitudinal field contact structure, including static contact piece and moving contact piece, static contact piece
It is fixedly connected with static conductive rod, moving contact piece is fixedly connected with moving conductive rod, there is gap between static contact piece and moving contact piece,
Longitudinal magnetic field coil is provided between static contact piece and static conductive rod, moving contact external shield is provided between moving contact piece and moving conductive rod
Cover.
Preferably, longitudinal magnetic field coil outer is provided with static contact external shield, moving contact external shield and static contact external screen
Cover hood shape identical, it is symmetrical.
Preferably, longitudinal magnetic field coil is multiple structure.
Preferably, longitudinal magnetic field coil is the double-deck two plate loop construction of first coil and the second coil composition, it is quiet to lead
Electric pole is connected with first coil center, and first coil is fixedly connected with the second coil, and the second coil is provided with convex, convex with it is quiet
Contact blade is fixedly connected.
Preferably, longitudinal magnetic field coil is structure as a whole, the external diameter and stationary contact of first coil and the second coil outer coil
Quite, first coil is divided into two branch structures to the radius of head piece when the outer coil of first coil is drawn out to from center, along the
The outer coil of one coil is each walked prominent to first coil the same side after half-turn and forms the second coil, and the second coil is by two
Individual semicircle composition, one end of each semicircle straight line is connected with first coil, the outer coil of the other end of straight line and the second coil
Connection, the other end of outer coil forms convex and is fixedly connected with static contact piece.
Preferably, being uniformly provided with 4 radial slots and central channel on static contact piece.
Preferably, moving contact piece is complete circle contact blade.
After such scheme, this utility model has the advantage that：
1. moving contact does not have loop construction and contact is not slotted, to ensure on the premise of mechanical strength is met, to pass through
Reduce moving contact quality to improve opening velocity, moving contact is provided with external shield, is effectively improved internal electric field, be conducive to reducing
Arc extinguishing chamber size, makes chopper volume miniaturization；
2. electric current produces magnetic field superposition, increasing magnetic field, and the magnetic field of the structure by double-deck two plate loop construction
Effective area is larger, and beneficial to vacuum arc diffusion state is directly entered；In addition magnetic field easily makes electric arc on contact blade in " centering type "
Motion is got up, and is difficult, to contact blade ablation, to improve arc-chutes service life, and electric arc product is to external diffusion, in arc extinction
Arc reignition is not easily caused afterwards, improves connecting-disconnecting function.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of longitudinal magnetic field coil in this utility model.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in further detail with specific embodiment.
Disclosed in this utility model is a kind of asymmetric vacuum interrupter longitudinal field contact structure, is illustrated in figure 1
Preferred embodiment of the present utility model, structure of contact terminal includes static contact piece 4 and moving contact piece 5 in the embodiment, static contact piece 4 with
Static conductive rod 1 is fixedly connected, and moving contact piece 5 is fixedly connected with moving conductive rod 7, between existing between static contact piece 4 and moving contact piece 5
Gap, is provided with longitudinal magnetic field coil 3 between static contact piece 4 and static conductive rod 1, static contact external screen is provided with outside longitudinal magnetic field coil 3
Cover 2 is covered, longitudinal magnetic field coil is not provided between moving contact piece 5 and the moving conductive rod 7, be alternately provided with only moving contact piece external shield
Cover 6, is not provided with loop construction so that its structure is simplified on moving contact piece 5, and quality is mitigated, and greatly improves contact
Breaking speed so that improve the break performance of whole chopper.
During design, moving contact external shield 6 and static contact external shield 2 are processed into into two parts of shape identical, and
The both sides of static contact piece 4 and moving contact piece 5 are symmetrically distributed in, the design of external shield can significantly optimize the curvature of contact, change
Kind internal electric field, it is to avoid in prior art when electric field intensity is excessive, needs to increase absolutely by increasing vacuum extinction chamber size
Edge distance and then improve the generation of internal electric field demand, therefore, it is symmetrical that the increase of contact external shield not only lifts contact outward appearance
Property, while also helping reduction arc-chutes, and then make breaker structure volume miniaturization.
Longitudinal magnetic field coil 3 between static contact piece 4 and static conductive rod 1 is multiple structure, specifically, the longitudinal flux field wire
Circle 3 is the double-deck two plate loop construction of the composition of 31 and second coil of first coil 32, as shown in Fig. 2 longitudinal magnetic field coil 3 is
Integrative-structure, first coil 31 is suitable with the radius of static contact piece 4 with the external diameter of the outer coil of the second coil 32, first coil 31
It is divided into two branch structures when being drawn out to the outer coil of first coil 31 from center 33, the outer coil along first coil 31 is each
Prominent to the same side of first coil 31 and form second coil 32 from after walking half-turn, the second coil is by two semicircle groups
Into one end of each semicircle straight line 34 is connected with first coil 31, the outer layer line of the other end of semicircle straight line 34 and the second coil
Circle 35 connects, and the other end of the outer coil 35 of the second coil forms convex 36 and is fixedly connected with static contact piece 4.
Moving conductive rod 7 is connected with the center 33 of first coil 31, and coil current Jing static conductive rods 1 enter first coil 31, from
The Jing of center 33 is radially connected to be divided into two branch roads when arriving at coil outer ring, and the is respectively enterd after the electric current walking half-turn in two branch roads
Two coil 32, and flow through direction with the identical in first coil and walk in two semicircles, two branch currents are from 36 points of convex
Not Jin Ru stationary contact head 4, and via electric arc enter movable contact spring head 5.Because electric current is by double-deck two plate loop construction, two lines
Circle produces magnetic field superposition, increasing magnetic field, and the magnetic field effective area of the structure is larger, and beneficial to vacuum arc expansion is directly entered
Scattered state.In addition, the magnetic field that the longitudinal magnetic field coil 3 is formed is in " centering type ", it easily makes electric arc move on contact blade,
It is difficult to contact blade ablation, therefore arc-chutes service life can be improved, and electric arc product is to external diffusion, after arc extinction
Arc reignition is not easily caused, connecting-disconnecting function is further improved.
4 radial slots and central channel can be also uniformly provided with this utility model on static contact piece 4, it is mainly to reduce whirlpool
The impact of stream effect, reduces remnant field, is conducive to the diffusion of metal ion.And moving contact piece 5 due to not have loop construction,
Its contact blade is the complete circle contact blade do not slotted, and moving contact piece 5 is not slotted and may further ensure that the machinery of parts is strong
Degree.
The above, is only preferred embodiment of the present utility model, and not technical scope of the present utility model is made
Any restriction, as long as therefore the change done according to claim of the present utility model and description or modification, should all belong to this practicality
Within the scope of new patent is covered.
Claims (7)
1. a kind of asymmetric vacuum interrupter longitudinal field contact structure, including static contact piece and moving contact piece, the static contact
Piece is fixedly connected with static conductive rod, and the moving contact piece is fixedly connected with moving conductive rod, the static contact piece and the moving contact
There is gap between piece, be provided with longitudinal magnetic field coil between the static contact piece and the static conductive rod, it is characterised in that described
Moving contact external shield is provided between moving contact piece and the moving conductive rod.
2. asymmetric vacuum interrupter longitudinal field contact structure according to claim 1, it is characterised in that：The longitudinal direction
Static contact external shield, the moving contact external shield and the static contact external shield shape phase are provided with outside field coil
Together, it is symmetrical.
3. asymmetric vacuum interrupter longitudinal field contact structure according to claim 1, it is characterised in that the longitudinal direction
Field coil is multiple structure.
4. asymmetric vacuum interrupter longitudinal field contact structure according to claim 3, it is characterised in that the longitudinal direction
Field coil is the double-deck two plate loop construction of first coil and the second coil composition, the static conductive rod and the First Line
Circle center connects, and the first coil is fixedly connected with second coil, and second coil is provided with convex, the convex
It is fixedly connected with the static contact piece.
5. asymmetric vacuum interrupter longitudinal field contact structure according to claim 4, it is characterised in that longitudinal magnetic field
Coil is structure as a whole, the first coil and the external diameter of the second coil outer coil and the radius phase of the static contact piece
When the first coil is divided into two branch structures when the outer coil of first coil is drawn out to from center, along first coil
Outer coil is each walked prominent to first coil the same side after half-turn and forms second coil, and second coil is by two
Individual semicircle composition, one end of each semicircle straight line is connected with the first coil, the outer layer of the other end of straight line and the second coil
Coil connects, and the other end of outer coil forms the convex and is fixedly connected with the static contact piece.
6. asymmetric vacuum interrupter longitudinal field contact structure according to claim 1, it is characterised in that the stationary contact
4 radial slots and central channel are uniformly provided with head piece.
7. asymmetric vacuum interrupter longitudinal field contact structure according to claim 1, it is characterised in that described dynamic to touch
Head piece is complete circle contact blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621185197.1U CN206116279U (en) | 2016-10-28 | 2016-10-28 | Asymmetric vacuum interrupter longitudinal [magnetic] field structure of contact terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621185197.1U CN206116279U (en) | 2016-10-28 | 2016-10-28 | Asymmetric vacuum interrupter longitudinal [magnetic] field structure of contact terminal |
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| Publication Number | Publication Date |
|---|---|
| CN206116279U true CN206116279U (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621185197.1U Expired - Fee Related CN206116279U (en) | 2016-10-28 | 2016-10-28 | Asymmetric vacuum interrupter longitudinal [magnetic] field structure of contact terminal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841451A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | Vacuum interrupter and the dc bypass switch for using the arc-chutes |
| CN110289191A (en) * | 2019-07-18 | 2019-09-27 | 西安交通大学 | A kind of 2/4ths circle coil forms indulge the vacuum interrupter of magnetic structure of contact terminal and application |
| CN112509856A (en) * | 2020-09-25 | 2021-03-16 | 平高集团有限公司 | Contact coil for generating arc extinguishing magnetic field and vacuum arc extinguishing chamber contact structure |
-
2016
- 2016-10-28 CN CN201621185197.1U patent/CN206116279U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841451A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | Vacuum interrupter and the dc bypass switch for using the arc-chutes |
| CN110289191A (en) * | 2019-07-18 | 2019-09-27 | 西安交通大学 | A kind of 2/4ths circle coil forms indulge the vacuum interrupter of magnetic structure of contact terminal and application |
| CN110289191B (en) * | 2019-07-18 | 2020-11-17 | 西安交通大学 | Two-quarter-turn coil type longitudinal magnetic contact structure and vacuum arc-extinguishing chamber applying same |
| CN112509856A (en) * | 2020-09-25 | 2021-03-16 | 平高集团有限公司 | Contact coil for generating arc extinguishing magnetic field and vacuum arc extinguishing chamber contact structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20191028 |