CN207097750U - A kind of high-voltage DC contactor - Google Patents
A kind of high-voltage DC contactor Download PDFInfo
- Publication number
- CN207097750U CN207097750U CN201720671867.9U CN201720671867U CN207097750U CN 207097750 U CN207097750 U CN 207097750U CN 201720671867 U CN201720671867 U CN 201720671867U CN 207097750 U CN207097750 U CN 207097750U
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- Prior art keywords
- armature
- voltage
- main contacts
- iron core
- contact bridge
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Abstract
The utility model provides a kind of high-voltage DC contactor, including two mutually isolated main contacts electrically connected respectively with two contacts in main circuit；Respectively the contact bridge for realizing that two main contacts are switched on or off is contacted or separates with two main contacts；The running part for driving contact bridge to contact or separate with two main contacts respectively；Also include a seal cavity for being full of inert gas, described two main contacts and contact bridge are arranged in described seal cavity.The nitrogen hydrogen mixed inert gas that certain pressure is filled in ceramic seal cavity in the utility model, the mixed inert gas can have good cooling effect electric arc is extinguished quickly to arc particels, and experiment proves that electric arc extinguishes in 0.5ms.
Description
Technical field
It the utility model is related to high-voltage DC contactor.
Background technology
Contactor is one of critical elements in automatic control system, contactor operation principle：When adding regulation electric to coil
Pressure, coil generating electromagnetic suction, under electromagnetic attraction effect, counter-force caused by armature customer service stage clip is moved to iron core, in 30ms
Within, armature and iron core adhesive, in motion process of the armature to iron core, armature drives drive link motion, and drive link drives and connect
Bridge is touched to move, connect to stationary contact；Disappeared when to coil blackout, coil electromagnetism suction, armature is under the effect of stage clip counter-force to first
Beginning position motion, within 30ms, product resets, and in motion process of the armature to initial position, armature drives drive link fortune
Dynamic, drive link drives contact bridge move to the initial position of contact bridge, is disconnected with stationary contact, such product complete once to connect with
The process of disconnection.
The contact of contactor can produce very serious electric arc, traditional contactors when switching high voltage, large current load
Contact change-over ability can not meet high-voltage large current load the needs of.
Utility model content
The purpose of this utility model is to provide a kind of high-voltage DC contactor for controlling electric arc and extinguishing within lower 0.5ms.
The technical solution of the utility model is：A kind of high-voltage DC contactor, including two respectively with two in main circuit
The mutually isolated main contacts of individual contact electrical connection；Contact or separate with two main contacts respectively and realize two main contacts conductings
Or the contact bridge disconnected；The running part for driving contact bridge to contact or separate with two main contacts respectively；Also include one
Seal cavity full of inert gas, described two main contacts and contact bridge are arranged in described seal cavity.
The nitrogen hydrogen mixed inert gas that certain pressure is filled in ceramic seal cavity in the utility model, the mixing are lazy
Property gas can there is good cooling effect electric arc is extinguished quickly to arc particels, experiment prove electric arc extinguish in 0.5ms.
In above-mentioned high-voltage DC contactor：Also include a permanent magnetic field, the direction of described permanent magnetic field and described contact
Bridge is contacted respectively with two main contacts or disengaging movement direction is vertical.
Because perpendicular to contact bridge and two main contacts both sides, there is provided magnetic field, and according to Lorentz force principle, electric arc is
The powered particle beams, electric arc can deflect among magnetic field, and such electric arc occurs partially between contact bridge and two main contacts
Turn, elongate, in a short time, electric arc disconnects, extinguished.Experiment proves that electric arc extinguishes in 0.5ms.
Further, in above-mentioned high-voltage DC contactor：Described running part includes：One end and described contact bridge
The drive link of gearing；Centre has the armature and iron core of through hole, and iron core is fitted in above armature, and armature is under electromagnetic attraction effect
Adhesive is bonded with iron core, and the other end of drive link and is interlocked with armature through the iron core and armature of fitting, armature and iron core it
Between set the elastic force direction to be the first stage clip for separating iron core with armature；The coil being arranged on outside the armature and iron core of overlapping, institute
The coil winding stated is on a coil brace.Here armature case covers armature and iron core and welded with magnetic conductor, and outside is
Coil.
Further, in above-mentioned high-voltage DC contactor：Described seal cavity is the inner chamber of a ceramic cup, described
Two main contacts be fitted into respectively from the soldering of ceramic cup bottom in ceramic cup, ceramic rim of a cup soldering is equipped with welding ring, is welding
Connect collar extension and be closed with magnetic conductor by the way of laser sealing, described magnetic conductor center is provided with the through hole that drive link passes through.
Further, in above-mentioned high-voltage DC contactor：When described drive link passes through described magnetic conductor, use
First insulating bushing realizes and is slidably connected in magnetic conductor center through hole, described iron core and riveting device riveting on the upside of magnetic conductor
Connect.Described armature case is in tubbiness, and bung swashs downside Laser seal welding in Flange-shaped Parts and described magnetic conductor.Armature case is rank
Iron and iron core cover to be welded with magnetic conductor, and this is only whole seal cavity.
Further, in above-mentioned high-voltage DC contactor：Described contact bridge uses the second insulating bushing with drive link
It is fixedly connected.
Further, in above-mentioned high-voltage DC contactor：Described the first insulating bushing and the second insulating bushing it
Between be provided with the second stage clip.
Further, in above-mentioned high-voltage DC contactor：Also include lazy to being vacuumized and being filled in seal cavity
Property gas blast pipe, described blast pipe assembled using soldering and described magnetic conductor.
Further, in above-mentioned high-voltage DC contactor：Described permanent magnetic field is by being arranged on described seal cavity
The magnet steel in opposite sides face produces, and described magnet steel is fixed on the opposite sides face of described seal cavity using magnet steel support.
Below with reference to drawings and examples, the utility model is described in detail.
Brief description of the drawings
Fig. 1 is the structural representation (one) for the contactor that the utility model embodiment 1 provides.
Fig. 2 is the structural representation (two) for the contactor that the utility model embodiment 1 provides.
Fig. 3 is the outer top view of contactor that the utility model embodiment 1 provides.
Embodiment
Embodiment 1, as shown in Figure 1, 2, the present embodiment are that inert gas is formed around main contacts, are mixed using nitrogen hydrogen
Close inert gas, on main contacts caused high-voltage arc cool down, extinguish electric arc quickly, make the high straightening of arc extinction
Flow contactor.
As depicted in figs. 1 and 2, the contactor of the present embodiment is made up of contact cavity and controlling organization two parts.
It is an annular seal space to contact chamber, and contact chamber body is a ceramic cup 6, and two bolts use from the bottom of ceramic cup 6
The form of soldering welds two main contacts 5 to be formed in contact cavity, what two main contacts 5 were mutually isolated in itself, bolt
Outside forms two tie points in main circuit, and two main contacts 5 are realized conducting and blocked by contact bridge 4, work as contact
Bridge 4 all contacts with two main contacts 5 simultaneously when, realize that two main contacts 5 electrically connect, so, make the main circuit of the present embodiment
The two points turn on；When all being contacted with two main contacts 5 when contact bridge 4 is different, the electrical connection of two main contacts 5 is disconnected,
So, the two points of the main circuit of the present embodiment are made just to end.
In the present embodiment, welded, realized to pottery using a welding ring 8 and one piece of upside of magnetic conductor 3 in the rim of a cup of ceramic cup 6
The sealing that 6 mouthfuls of porcelain cup, contact bridge 4 are driven using a drive link 7 to be moved up and down under magneticaction, are realized and are touched with two masters
The contact of point 5 is with separating.Drive link 7 passes through the magnetic conductor 3 as seal cavity bottom surface using the first insulating bushing 20, with magnetic conduction
Body 3 forms the sealing sliding connection structure that drive link 7 therefrom slides up and down, and drive link 7 is served as a contrast with contact bridge 4 using the second insulation
Set 21 is fixedly connected, and is realized that contact bridge 4 interlocks with rotating bar 7, is set between the first insulating bushing 20 and the second insulating bushing 21
The second stage clip 15 is put, in the presence of the second stage clip 15, realizes sealing when drive link 7 slides up and down.In rotating bar 7 with contacting
This end end that bridge 4 connects is fixed using first collar 19.Here the effect of the second stage clip 15：The overtravel of product,
Sufficiently large pressure is provided to contact bridge 4, is allowed to reliably contact with two main contacts 5, after contact wear is a certain amount of, there is provided from
The effect of dynamic compensation, such contact bridge 4 can also be contacted reliably with stationary contact.
Soldering is equipped with one and is used to the air in the cavity of ceramic cup 6 is drained and filled thereto lazy on magnetic conductor 3
The blast pipe 16 of property gas such as nitrogen hydrogen mixed inert gas or other inert gases.
The downside of magnetic conductor 3 is then to produce the actuating unit that drive link 7 slides up and down, including two Hes of armature 1 being bonded to each other
Iron core 2, armature 1 and iron core 2 are all the cylinders that there is through hole a kind of centre, and drive link 7 is from the through hole among armature 1 and iron core 2
In pass through, wherein, iron core 2 close to the middle part of drive link 7, and armature 1 then drive link 7 the other end portion end, and
Interlocked with drive link 7, armature 1 is fixed on to the end of drive link 7 using the second collar 18, one end phase with fixed contact bridge 4
It is right.Make two to separate using the first stage clip 14 between armature 1 and iron core 2, armature case is provided with outside armature 1 and iron core 2
11, armature case 11 is arranged in the bobbin 12 of an I-shaped, and coil 9 is wound on bobbin 12, in bobbin 12
Yoke 10 is extend outwardly, in the shell 13 of 10 external tentaculum of yoke, the lead-out wire 17 of coil 9 is drawn from shell 13.This
In, magnetic conductor 3, yoke 10, iron core 2, armature 1, form closed magnetic circuit；Iron core 2 rivets with magnetic conductor 3, and iron core 2 is inhaled with armature 1
Close；With the laser welding of welding ring 8 on the upside of the magnetic conductor as the rim of a cup of ceramic cup 6, it is slidably disposed through in the center of magnetic conductor 3
Drive link 7 from the end armature case 11 of drive link 7 as such, it is desirable to wrap up, and armature case 11 is a tubbiness here,
Staving parcel drive link 7, armature 1 and the iron core 2 of cylindricality, have a mouth to turn up, that is, a flange, flange in bung
Mouthful with the downside Laser seal welding of magnetic conductor 3, formed ceramic cup 6 inner chamber, in ceramic cup 6 mouthfuls swashed using welding ring 8 and the upside of magnetic conductor 3
Photocoagulation, the downside of magnetic conductor 3 and the flange Laser seal welding of the bung of armature case 11, form the inner chamber of ceramic cup 6 and armature case 11
The seal cavity of composition.
In the present embodiment, two bolts of two main contacts 5 of work, ceramic cup 6, welding ring 8 are assembled using soldering；Blast pipe
16 and magnetic conductor 3 using soldering assemble；Iron core 2 is riveted with magnetic conductor 3, is sequentially loaded into drive link 7, the second stage clip 14, rank
Iron 1, the second collar 18, the first insulating bushing 20, the second stage clip 15, contact bridge 4, the second insulating bushing 21, the first collar 19；Will
Ceramic cup 6 is assembled with welding ring 8 and is connected with laser fusion welding；Armature case 11 is assembled with magnetic conductor 3 and melted with laser
Weldering connection；Inert mixed gas are vacuumized and filled to cavity by blast pipe 16, using mechanical compound seal blast pipe
16；Coil 9 and yoke 10 are assembled, yoke 10 and magnetic conductor 3 are assembled, is connect using riveting load.
When producing electromagnetic attraction to coil 9 plus assigned voltage, coil 9, under electromagnetic attraction effect, armature 1 overcomes first
Counter-force is moved to iron core 2 caused by stage clip 14, within 30ms, armature 1 and the adhesive of iron core 2, in motion of the armature 1 to iron core 2
During, armature 1 drives drive link 7 to move, and drive link 7 drives contact bridge 4 to the bolt movement as two main contacts 5, connect
It is logical；Being powered off when to coil 9, the electromagnetic attraction of coil 9 disappears, and armature 1 moves under the effect of the counter-force of the first stage clip 14 to initial position,
Within 30ms, product resets, and in motion process of the armature 1 to initial position, armature 1 drives drive link 7 to move, drive link
The initial position of 7 drive contact bridge 4 to contact bridges 4 moves, and is disconnected with two bolts as two main contacts 5, such product
Complete the process once switched on and off.
During above-mentioned switch on and off, contact bridge 4 and bolt switch on and off process can produce it is larger, tighter
The electric arc of weight, in high vacuum ceramic seal cavity, be filled with certain proportion and certain pressure this pressure can select 0.5~
8 atmospheric pressure, nitrogen hydrogen inert mixed gas, the ratio of nitrogen hydrogen mixeding gas is：N gas accounting 85%~98%, remaining is hydrogen
Gas.Electric arc is high-temperature electronic of the negative electrode to anode movement, and nitrogen hydrogen inert mixed gas have good cooling effect to arc particels,
In confined space, within a short period of time, inert gas is cooled down to electric arc, and electric arc will control to be extinguished within 0.5ms.
Embodiment 2, the present embodiment is also a kind of high-voltage DC contactor that can extinguish electric arc in a short time, with implementation
The structure of example 1 is compared, and simply outside shell 13, a magnet steel support 24 on the outside of contact cavity portion, magnet steel 23 is assembled, such as Fig. 3
It is shown, magnet steel 23 and magnet steel support 24 are assembled, by magnet steel support 24 with being assembled outside ceramic cup 6；By one integral piece and outside
Shell is assembled, and forms whole contactor.A kind of double arc extinguishing measure ceramic seal high-voltage DC contactors are so formed, using two
Kind arc extinguishing measure is worked simultaneously, and effect is more preferable.
In the embodiment, set perpendicular to the both sides of contact bridge 4 and two bolts as main contacts 5, increase permanent magnetic field
Meter, electric arc is the high-temperature electronic moved from cathode to anode, and according to Lorentz force principle, electronics can occur partially among magnetic field
Turn, such electric arc deflects between contact bridge and bolt, elongates, and in a short time, electric arc disconnects, extinguished.Left side stationary contact
Point connects the negative pole of load, and the right stationary contact connects the positive pole of load, and according to circuit theory, the lower end of left side stationary contact is just the right
The lower end of stationary contact is negative, and the left side of contact bridge is negative, and right-hand member is just, according to electronics direction and the principle of the sense of current, to do a little
Electric arc direction at contact is moved from contact bridge to left side stationary contact, and the right electric arc direction is from the right stationary contact to contact bridge
Motion, now magnetic direction be from outside to inside, according to the principle of Lorentz force, the edge run-out to the left of left side phone, the right electric arc to
The right deflects.A direction is changed, principle is identical, mainly realizes that electric arc deflects to two sides i.e. the both ends of contact bridge.
Claims (9)
1. a kind of high-voltage DC contactor, including：
Two mutually isolated main contacts (5) electrically connected respectively with two contacts in main circuit；
Respectively the contact bridge (4) for realizing that two main contacts (5) are switched on or off is contacted or separates with two main contacts (5)；
The running part for driving contact bridge (4) to contact or separate with two main contacts (5) respectively；
It is characterized in that：
Also include a seal cavity for being full of inert gas, described two main contacts (5) and contact bridge (4) are arranged at institute
In the seal cavity stated.
2. high-voltage DC contactor according to claim 1, it is characterised in that：Also include a permanent magnetic field, it is described forever
The direction in magnetic field is contacted respectively with two main contacts (5) with described contact bridge (4) or disengaging movement direction is vertical.
3. high-voltage DC contactor according to claim 2, it is characterised in that：Described running part includes：
The drive link (7) that one end interlocks with described contact bridge (4)；
Centre has the armature (1) and iron core (2) of through hole, and iron core (2) is fitted in armature (1) above, the other end of drive link (7)
Interlock through the iron core (2) and armature (1) of fitting, and with armature (1), be provided between armature (1) and iron core (2) by iron core
(2) the first stage clip (14) separated with armature (1)；
The coil (9) of the armature (1) and the outer armature case (11) of iron core (2) of fitting outside is arranged on, described coil (9) is wound on
On one bobbin (12).
4. high-voltage DC contactor according to claim 3, it is characterised in that：Described seal cavity is a ceramic cup
(6) inner chamber, described two main contacts (5) are fitted into ceramic cup (6) from ceramic cup (6) soldering respectively, ceramic cup (6)
Mouth soldering is equipped with welding ring (8), is closed with magnetic conductor (3) by the way of laser sealing in welding ring (8) mouth, described leads
Magnet (3) center is provided with the through hole that drive link (7) passes through.
5. high-voltage DC contactor according to claim 4, it is characterised in that：In described drive link (7) described in
Magnetic conductor (3) when, employ the first insulating bushing (20) realize be slidably connected in magnetic conductor (3) center through hole, it is described
Iron core (2) is driveed the rivets with riveting on the upside of magnetic conductor (3) and connect；Described armature case (11) is in tubbiness, bung in Flange-shaped Parts with it is described
Laser seal welding on the downside of magnetic conductor (3).
6. high-voltage DC contactor according to claim 5, it is characterised in that：Described contact bridge (4) and drive link (7)
It is fixedly connected using the second insulating bushing (21).
7. high-voltage DC contactor according to claim 5, it is characterised in that：Described the first insulating bushing (20) with
The second stage clip (15) is provided between second insulating bushing (21).
8. high-voltage DC contactor according to claim 5, it is characterised in that：Also include to carrying out taking out very in seal cavity
Empty and filling inert gas blast pipe (16), described blast pipe (16) are assembled using soldering and described magnetic conductor (3).
9. high-voltage DC contactor according to claim 2, it is characterised in that：Described permanent magnetic field is described by being arranged on
The magnet steel (23) in the opposite sides face of seal cavity is produced, and described magnet steel (23) is fixed on described using magnet steel support (24)
The opposite sides face of seal cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720671867.9U CN207097750U (en) | 2017-06-09 | 2017-06-09 | A kind of high-voltage DC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720671867.9U CN207097750U (en) | 2017-06-09 | 2017-06-09 | A kind of high-voltage DC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207097750U true CN207097750U (en) | 2018-03-13 |
Family
ID=61552245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720671867.9U Expired - Fee Related CN207097750U (en) | 2017-06-09 | 2017-06-09 | A kind of high-voltage DC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207097750U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146741A (en) * | 2017-06-09 | 2017-09-08 | 深圳市品川新能源技术有限公司 | A kind of high-voltage DC contactor |
| CN108922827A (en) * | 2018-07-26 | 2018-11-30 | 哈尔滨工业大学 | A kind of contact mechanism in four breakpoints contactor |
| CN109036976A (en) * | 2018-08-08 | 2018-12-18 | 三友联众集团股份有限公司 | A kind of Improvement type push-rod assembly for relay |
| CN110335783A (en) * | 2019-07-22 | 2019-10-15 | 浙江天继电气有限公司 | A kind of striking contact for D.C. contactor |
-
2017
- 2017-06-09 CN CN201720671867.9U patent/CN207097750U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146741A (en) * | 2017-06-09 | 2017-09-08 | 深圳市品川新能源技术有限公司 | A kind of high-voltage DC contactor |
| CN108922827A (en) * | 2018-07-26 | 2018-11-30 | 哈尔滨工业大学 | A kind of contact mechanism in four breakpoints contactor |
| CN109036976A (en) * | 2018-08-08 | 2018-12-18 | 三友联众集团股份有限公司 | A kind of Improvement type push-rod assembly for relay |
| CN110335783A (en) * | 2019-07-22 | 2019-10-15 | 浙江天继电气有限公司 | A kind of striking contact for D.C. contactor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 Termination date: 20210609 |