CN207993777U - D.C. contactor polarized combined type arc-control device - Google Patents
D.C. contactor polarized combined type arc-control device Download PDFInfo
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- CN207993777U CN207993777U CN201820535248.1U CN201820535248U CN207993777U CN 207993777 U CN207993777 U CN 207993777U CN 201820535248 U CN201820535248 U CN 201820535248U CN 207993777 U CN207993777 U CN 207993777U
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- arc
- contact
- moving contact
- shell
- contactor
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model is related to D.C. contactors, specifically D.C. contactor polarized combined type arc-control device, shell including sealing, it is provided with moving contact in the shell, it is provided with the static contact that can be respectively contacted with the moving contact both ends on the housing, it is provided with the insulating support for making two static contacts reliably insulate on the housing, an arc-chutes are respectively arranged with positioned at moving contact both ends in the shell, a pair of of permanent magnet is equipped in the contact both sides that the moving contact is contacted per one end with corresponding static contact.The utility model is equipped with a pair of of permanent magnet in the contact both sides that moving contact is contacted per one end with corresponding static contact, after the electric arc of contact point generates, the electric arc at both ends is completely covered in the magnetic field that two pairs of permanent magnets of two terminal contacts of moving contact generate, electric arc in magnetic field moves under Lorentz force towards arc-chutes direction, to realize the purpose of fast arc extinction.
Description
Technical field
The utility model is related to D.C. contactor, specifically a kind of D.C. contactor polarized combined type arc-control device.
Background technology
Increasingly increase with new-energy automobile field to electrical energy demands, coming into operation for high-power electric appliance make circuit
In electric current also increase therewith, have more than the impetus of traditional contactors breaking capacity greatly.Further reduce the ruler of D.C. contactor
Very little, raising breaking capacity has become the inexorable trend of development.Must have arc-control device, interrupter cartridge in high-power direct current contactor
It is the core component for ensureing reliable disjunction to set, and the approach for usually improving arc extinguishing ability has：
1. speed draws arc extinguishing
Distance between contact quickly is widened, when added undertension is to puncture its spacing between contact, electric arc would not be again
It lights.The separating rate of contact is faster, and arc extinction is faster, and the escape spring that strength is installed usually in high-voltage circuitbreaker comes
Accelerate the separated speed of contact.
2. arc blow-out arc extinguishing method
Utilize external force（Such as air-flow, oil stream or electromagnetic force）Electric arc is blown, electric arc is made to accelerate cooling, while elongating arc,
Reduce electric arc in electric field strength, accelerate the extinguishing of electric arc, divide by the direction of arc blow-out, have it is horizontal blow and indulge blow two kinds.
3. cooling down arc extinguishing method
The temperature for reducing electric arc, makes the composite strengthening of negative ions, electric arc is contributed to extinguish rapidly, this is a kind of basic
Arc-suppressing method.
4. short arc arc extinguishing method
Long arc is cut into several short arcs using sheet metal, then the pressure drop on electric arc will approximatively increase several times.It is applied when outside
When voltage is less than the pressure drop on electric arc, then electric arc cannot maintain and extinguish rapidly.Generally use steel arc-chute, allows electric arc to enter
Steel disc, first, electric power arc blow-out is utilized, second is that ferromagnetic suction arc is utilized, while steel disc also has cooling effect to electric arc.
5. slit arc extinguishing method
Electric arc, which is formed by solid dielectric in narrow ditch, to burn, and electric arc is cooled down, while electric arc burns in the narrow ditch of slit,
Pressure increases, and is conducive to the extinguishing of electric arc.Some fuses are exactly former using this fossula arc extinguishing in molten casing pack quartz sand
Reason, also a kind of are-tight insulating materials（Ceramic-like）Arc-chute is made, also with this arc quenching principle.
6. vacuum extinction method
Vacuum has higher dielectric strength, if Switching contact arrangement is placed in vacuum tank, in current over-zero,
Electric arc can be extinguished.To prevent overvoltage, when contact should not be made to separate, current break zero.It generally should be between contact
A small amount of metallic vapour is generated, arc channel is formed.Before and after alternating current declines zero passage naturally, the metal steam of these plasma states
Vapour just disperses rapidly and extinguishes electric arc in a vacuum.
But or above-mentioned arc-suppressing method is complicated, of high cost or arc extinguishing speed is slower, and arc extinguishing ability is not strong enough.
Utility model content
In view of the above technical problems, the utility model provide it is a kind of it is relatively simple, compared with easy processing mode accelerate arc extinguishing speed,
Improve the D.C. contactor polarized combined type arc-control device of arc extinguishing ability.
Technical solution is used by the utility model solves above-mentioned technical problem：D.C. contactor polarized combined type goes out
Arc device includes the shell of sealing, and moving contact is provided in the shell, and being provided on the housing can be with the moving contact two
The static contact that contacts respectively is held, is provided with the insulating support for making two static contacts reliably insulate on the housing, in the shell
An arc-chutes are respectively arranged with positioned at moving contact both ends, in the contact two that the moving contact is contacted per one end with corresponding static contact
Side is equipped with a pair of of permanent magnet, and the electric arc which can generate the contact guides the corresponding arc extinguishing into
Room.
Preferably, there are four mounting grooves, each permanent magnet to be arranged in corresponding peace for setting on the insulating support
In tankage.
Preferably, being filled with inert gas in the shell of the sealing.
Preferably, be provided on the shell moving contact can be made to be contacted with two static contacts after quickly disjunction reset
Device.
Preferably, the resetting apparatus includes the guide rod that one end is connect with the moving contact, the guide rod other end with set
The reseting groove connection outside the shell is set, is equipped in the reseting groove and is set in the guide rod other end and is resisted against the shell
The resetting spring of outer wall.
Preferably, being provided with the buffer spring for being sleeved on the guide rod between the inner walls and moving contact.
As can be known from the above technical solutions, the utility model is in the contact two that moving contact is contacted per one end with corresponding static contact
Side is equipped with a pair of of permanent magnet, and after the electric arc of contact point generates, the magnetic field that two pairs of permanent magnets of two terminal contacts of moving contact generate is complete
The electric arc at all standing both ends, the electric arc in magnetic field move under Lorentz force towards arc-chutes direction, to make arc curved way extend；
When arc road reaches the grid of arc-chutes, under the segmentation of grid, arc road is further elongated and cools down electric arc, until putting out completely
It goes out, to realize the purpose of fast arc extinction.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model preferred embodiment.
Fig. 2 is the side schematic view of Fig. 1.
Specific implementation mode
The utility model is discussed in detail with reference to Fig. 1 and Fig. 2, this utility model schematic implementation example and
Illustrate for explaining the utility model, but is not intended to limit the scope of the present invention.
D.C. contactor polarized combined type arc-control device includes the shell 1 of sealing, indifferent gas is filled in the shell
Body is, it can be achieved that vacuum extinction；Moving contact 2 is provided in the shell, being provided on the housing can be with the moving contact both ends
The static contact 3 contacted respectively, is provided with the insulating support 4 for making two static contacts reliably insulate on the housing, in the shell
An arc-chutes 5 are respectively arranged with positioned at moving contact both ends, in the contact that the moving contact is contacted per one end with corresponding static contact
Both sides are equipped with a pair of of permanent magnet 6, and the electric arc which can generate the contact guides corresponding described go out into
Arc chamber.After electric arc generates, the electric arc in magnetic field moves under Lorentz force towards arc-chutes direction, to make arc curved way prolong
Long, the electric field strength of electric arc is lower, and arc column attenuates, when arc road reaches the insulation grid of arc-chutes, point of the electric arc in insulation grid
It cuts off, arc road is further elongated and cools down, until extinguishing completely, to achieve the purpose that fast arc extinction.
In implementation process, permanent magnetism shape can be cylindrical or rectangle etc..A pair of of permanent magnet of contact both sides is responsible for
The magnetic quenching of this contact.There are four mounting grooves, each permanent magnet to be arranged in corresponding peace for setting on the insulating support
In tankage, four set of permanent magnets are at two pairs of magnetic poles；And permanent magnet is separated by insulating support, the magnetic field between magnetic pole passes through simultaneously complete
The contact of dynamic and static contact is covered, and arc-chutes are arranged on insulating support, and is positioned by insulating support and shell.
Quick disjunction after the moving contact can be made to be contacted with two static contacts is provided on the shell of the utility model
Resetting apparatus.Specifically, resetting apparatus includes the guide rod 7 that one end is connect with the moving contact, the guide rod other end and setting
Reseting groove 8 outside the shell connects, and is equipped in the reseting groove and is set in the guide rod other end and is resisted against the shell
The resetting spring 9 of outer wall.When moving contact and static contact contact, the resetting spring is compressed, and larger elastic force is generated；When dynamic
When contact is initially separated after being contacted with static contact, under the action of resetting spring elastic force so that the quick disjunction of dynamic/static contact.As
It is preferred that being provided with the buffer spring 10 for being sleeved on the guide rod, the buffer spring between the inner walls and moving contact
It can guarantee that stability when dynamic/static contact contact, simultaneous buffering spring cooperate with resetting spring to work in dynamic/static contact disjunction, it can
Make contact fast lifting breaking speed in disjunction.
From the foregoing, it will be observed that the utility model combine electromagnetism, mechanically aided quick disjunction structure, vacuum extinction nondominant hand
Five kinds of section, the insulation arc extinguishing structure of grid of arc-chutes, magnetic quenching structure means, under so that contactor is laid out in a limited space
Ensure to realize maximum bearing power while product safety performance.The utility model can be in the base of original vacuum D.C. contactor
On plinth, under the premise of not increasing DC switchgear appearance and size, accelerate arc extinguishing speed in a manner of most simple, most easy processing
Degree improves arc extinguishing ability, is suitable for the combination arc extinguishing of minitype high voltage heavy DC contactor.
The above embodiment is only for illustration of the utility model, and is not limitations of the present invention, related skill
The those of ordinary skill in art field can be with various changes can be made in the case where not departing from the spirit and scope of the utility model
And modification, therefore all equivalent technical solutions should also belong to the scope of the utility model.
Claims (6)
1. D.C. contactor polarized combined type arc-control device, includes the shell of sealing, moving contact is provided in the shell, it is special
Sign is：It is provided with the static contact that can be respectively contacted with the moving contact both ends on the housing, is arranged on the housing
There is the insulating support for making two static contacts reliably insulate, the shell is interior to be respectively arranged with an arc-chutes positioned at moving contact both ends,
The contact both sides that the moving contact is contacted per one end with corresponding static contact are equipped with a pair of of permanent magnet, the magnetic generated to permanent magnet
The electric arc that field can generate the contact guides the corresponding arc-chutes into.
2. D.C. contactor polarized combined type arc-control device according to claim 1, it is characterised in that：The insulating support
There are four mounting groove, each permanent magnets to be arranged in corresponding mounting groove for upper setting.
3. D.C. contactor polarized combined type arc-control device according to claim 1, it is characterised in that：The shell of the sealing
It is filled with inert gas in vivo.
4. according to claims 1 or 2 or the 3 D.C. contactor polarized combined type arc-control devices, it is characterised in that：The shell
The resetting apparatus of quick disjunction after the moving contact can be made to be contacted with two static contacts is provided on body.
5. D.C. contactor polarized combined type arc-control device according to claim 4, it is characterised in that：The resetting apparatus
Including the guide rod that one end is connect with the moving contact, which connect with the reseting groove being arranged outside the shell, should
The resetting spring for being set in the guide rod other end and being resisted against the housing exterior walls is equipped in reseting groove.
6. D.C. contactor polarized combined type arc-control device according to claim 5, it is characterised in that：In the shell
The buffer spring for being sleeved on the guide rod is provided between wall and moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820535248.1U CN207993777U (en) | 2018-04-17 | 2018-04-17 | D.C. contactor polarized combined type arc-control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820535248.1U CN207993777U (en) | 2018-04-17 | 2018-04-17 | D.C. contactor polarized combined type arc-control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207993777U true CN207993777U (en) | 2018-10-19 |
Family
ID=63830922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820535248.1U Expired - Fee Related CN207993777U (en) | 2018-04-17 | 2018-04-17 | D.C. contactor polarized combined type arc-control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207993777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192570A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of direct current PC grades of twin-power switch arc extinguishing structures |
-
2018
- 2018-04-17 CN CN201820535248.1U patent/CN207993777U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192570A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of direct current PC grades of twin-power switch arc extinguishing structures |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 Termination date: 20200417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |