CN106098477A - A kind of high-voltage DC contactor of band magnetic coil arc extinguishing - Google Patents
A kind of high-voltage DC contactor of band magnetic coil arc extinguishing Download PDFInfo
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- CN106098477A CN106098477A CN201610668595.7A CN201610668595A CN106098477A CN 106098477 A CN106098477 A CN 106098477A CN 201610668595 A CN201610668595 A CN 201610668595A CN 106098477 A CN106098477 A CN 106098477A
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- contact pin
- quiet
- voltage
- contactor
- arc extinguishing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
- H01H50/38—Part of main magnetic circuit shaped to suppress arcing between the contacts of the relay
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- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses the high-voltage DC contactor of a kind of band magnetic coil arc extinguishing, belonging to catalyst technical field, including shell and base, described shell is fixing with base to be connected, being provided with magnetic ring coil assembly and fork in described shell, described fork top is fixed with dynamic contact pin two；Being provided with electromagnet assembly below described shell, the movable end of described electromagnet assembly is connected with fork one end by catch bar, and described catch bar can promote fork to install axle around it and swing.The technical program uses magnet ring winding coil to produce induced field and provides magnetic quenching system, height along with instantaneous voltage, the induced field also respective change produced in winding coil, cause varying in size of magnetic blow-out power, and by baffle plate introduction by magnetic field in the vertical direction of the current direction of contact, the significantly more efficient arc-chutes inner chamber blowing to electric arc specify carries out segmentation arc extinguishing, it is to avoid interiors of products contact is damaged.
Description
Technical field
The invention belongs to catalyst technical field, relate to a kind of for rail transit locomotive, the vehicle DC of electric automobile
Catalyst, especially relates to the high-voltage DC contactor of a kind of band magnetic coil arc extinguishing.
Background technology
High-voltage DC contactor is a kind of work switching component in the power supply system, when power-supply system need connect and
Being switched on or switched off of control contactor can be carried out by the coil control end controlling electric pressure relatively low during disconnection, reach to realize height
The purpose that line ball road is switched on or switched off.Domestic existing high-voltage DC contactor mostly uses traditional non-hermetic structure, adopts
It is switched on or switched off mode with single main contacts, uses magnet steel as alnico magnets, be placed on quiet contact chip both sides, according to electric current
Flow to determine N pole and the S extreme direction of magnet steel, use pyrite as arc latch plate；Traditional non-tight high-voltage DC contactor tool
Bear load voltage feature relatively low, bulky, only meet the product of voltage of below 1000V, if voltage is at more than 1000V,
Arc quenching effect is bad, and service life is short.Because permanent-magnet steel can produce the magnetic blow-out that size is constant in product main contacts position, damage
Product contact；Additionally there is also Lorentz force effect in main contacts position, make product main contacts by External Force Acting, cause product to touch
Point cantact is unstable.And the many employings of high-voltage DC contactor of sealing structure carry out evacuation or are filled with in the product product
Nitrogen and the mode of noble gas.
The electric arc produced when catalyst is switched on or switched off is suppressed because of the existence of noble gas, and then reaches arc extinguishing
Effect.Inertia high-pressure gas medium can make high-voltage DC contactor keep good pressure and protect contact not oxidized, it
Contact high temperature scaling loss can be avoided when high-voltage DC contactor carries out thermal switch, in the application very sensitive to current fluctuation, lazy
Property inflation high-voltage DC contactor there is low and stable leakage current, particularly between break contact, can keep for a long time
The lowest leakage current.But noble gas is at high temperature decomposed and the characteristic that ionizes differs widely with air, inertia simultaneously
Gas molecule and the material decomposed when high temperature thereof, have absorption free electron and constitute anion and obtain characteristic so that
The electric arc of burning in inertia, arc voltage is relatively low, and arc footpath is relatively thin, and the thermal inertia of arc column is less.
In a vacuum, owing to pressure is relatively low, the most considerably less gas molecule, this makes to be not easy in vacuum to produce electricity
Arc, the most every 1/10 millimeter of dielectric strength being likely to be breached thousand of volt up to ten thousand.Further, since there is no air, very
Aerial contact will not be oxidized, and gas molecule is less also makes the breakdown voltage between contactor gap be improved, and reduces electric arc
The probability formed, thus reach the purpose of arc extinguishing.
Above-mentioned several method has higher requirement to manufacturability, it is desirable to product air-tightness in whole life span is all
Can not be destroyed, otherwise life of product can be greatly shortened；And production cost is high, it is big that technique realizes difficulty, greatly limit
The high investment projects such as the scope of application, only aircraft just can use；And under high voltages noble gas there is also breakdown can
Energy.
Along with rapidly sending out of current market industry (new-energy automobile, 4G communication power supply, wind-power electricity generation, track traffic etc.)
Exhibition, the requirement to high-voltage DC contactor loaded work piece voltage also improves constantly, wherein new-energy automobile high-voltage DC contactor
Load voltage claimed range at 450V～600V, track traffic high-voltage DC contactor load voltage claimed range at 1500V～
2000V, now, the requirement to adapter load capacity improves the most therewith.When product is used on high-speed railway rail vehicular traffic, right
Use operating voltage requirement higher, in the case of load current is the biggest, when power on and disconnection, produce the strongest electricity in addition
Arc, will result in contact melted and is formed bonding, it is impossible to disconnect.
Cannot break because producing electric arc when high voltage load switches on and off to solve traditional contactors, cause main
Contact is burnt or bonding problem, in order to improve the service life of high-voltage DC contactor, needs to study arc extinguishing technology.
Generally, the important component part of high-voltage DC contactor is the magnetic quenching system of this product, high-voltage connecting
Tentaculum is when main contacts is switched on or switched off, due to high pressure effect so that air, nitrogen, carbon dioxide and noble gas all exist
The possibility being broken down by high-voltage, will produce electric arc if breakdown, if electric arc is not processed, can cause contact melted, cause contact
Adhesion and cannot flick, occur product bug, so weigh a high-voltage DC contactor Optimality, can be by examining this product
Under high-tension effect, when product main contacts is switched on or switched off, can well the electric arc of generation be disposed.
Summary of the invention
In order to solve the problems referred to above, the invention provides the high-voltage DC contactor of a kind of band magnetic coil arc extinguishing, thus reach
To arc extinguishing and the effect increased the service life.
The present invention is achieved by following technical solution.
The high-voltage DC contactor of a kind of band magnetic coil arc extinguishing, including shell and base, described shell is fixing with base even
Connecing, be provided with magnetic ring coil assembly and fork in described shell, described fork top is fixed with dynamic contact pin two；Set below described shell
Having electromagnet assembly, the movable end of described electromagnet assembly is connected with fork one end by catch bar, and described catch bar can promote
Fork is installed axle around it and is swung；Being provided with dynamic contact pin one below described magnetic ring coil assembly, described dynamic contact pin one end is used for connecting electricity
Source positive pole, the other end is connected with dynamic contact pin two by wire；Described dynamic contact pin two is provided with actively contact A and auxiliary movable contact A；
Quiet contact pin three and auxiliary stationary contact it is correspondingly provided with on described magnetic ring coil assembly.
Described shell is additionally provided with arc-chutes, inside the baffle plate of described arc-chutes two sides, is respectively provided with an arc extinguishing reed.
The described shell other end is additionally provided with striking reed B, striking reed B and is connected with dynamic contact pin by wire.
Described magnetic ring coil assembly includes quiet contact pin seat, bobbin two and magnetic ring coil, and magnetic ring coil is by enamel-covered wire coiling
Forming, magnetic ring coil is arranged on bobbin two, and is installed along with in quiet contact pin seat with bobbin, and bobbin is by setting-in spiral shell
Female A and embedded nut B is fixed in quiet contact pin seat；Quiet contact pin seat outer rim is additionally provided with striking reed A and quiet contact pin one, striking reed
A and quiet contact pin one are fixed on quiet contact pin seat by regulation screw and latch one respectively；Striking reed A is respectively arranged at two ends with quiet connecing
Sheet two and auxiliary stationary contact, quiet contact pin one one end is the union joint with external connection, and the other end is provided with quiet contact pin three, wherein, quiet
Contact pin three is adjacent with auxiliary stationary contact end.
It is additionally provided with a static contact spring piece, for guaranteeing the quiet contact pin two of striking reed A between described striking reed A and quiet contact pin seat
End is in vacant state.
Described dynamic contact pin two and fork are for being welded to connect.
Described shell one end is provided with microswitch, is provided with reed between microswitch and catch bar, and described reed can push away
Elastic deformation is there is under the promotion of lever.
Described quiet contact pin three, actively contact A, auxiliary movable contact A, auxiliary stationary contact all use and increase in AgSnO2 alloy
The synthetic material of yttrium.
The invention has the beneficial effects as follows:
The high-voltage DC contactor of a kind of band magnetic coil arc extinguishing of the present invention:
1. use magnet ring winding coil to produce induced field and magnetic quenching system is provided, along with the height of instantaneous voltage,
The induced field also respective change produced in winding coil, the size causing magnetic blow-out power is also the most different, and it is proportional relationship；
Pass perpendicularly through winding coil by latch, enhance induced field, and by baffle plate the introduction by magnetic field current direction in contact
Vertical direction on, the significantly more efficient arc-chutes inner chamber blowing to electric arc specify carries out segmentation arc extinguishing, is divided by the electric arc of burning
In being scattered to arc-chutes, electric arc is elongated cooling arc extinguishing, protect interiors of products contact and do not cause because heat is excessive contact to be damaged；
2. when main contacts is switched on or switched off, the electric arc of generation all bears on auxiliary contact, it is ensured that main contacts is not
Impaired, it is ensured that load circuit works safely and reliably, improve the reliability of product, also improve the use longevity of product simultaneously
Life；
3. when main contacts is in reliability contact, the most Arc-free generation, auxiliary contact are also at off-state,
In winding coil loop, no current flows through, and will not produce induced field, also would not produce magnetic blow-out, make main contacts more safely may be used
By ground contact, not acted on by Lorentz force, make main contacts wear and tear, improve life of product, the life-span can reach more than 50,000 times；
4. by arranging striking reed at two ends assisting quiet contact pin and dynamic contact pin one, product contact or the wink disconnected
Between, when high-voltage breakdown produces electric arc, electric arc is drawn long by arc-chutes, elongate space as electric arc, owing to arc-chutes inner chamber sets
Count cut-out district, caused a part of electric arc to be cut off under the effect of magnetic blow-out, elongate cooling and arc extinguishing；Another part electric arc then exists
Arc-chutes add arcdrop between two striking reeds, when arc drop value increases to supply voltage value, makes back
Road electric current I=0, and then reach the purpose of arc extinguishing；Making this product bear voltage and can reach 2000V, bearing electric current is 100A, improves
The problem that individually magnetic quenching effect is bad, reduces cost and technology difficulty simultaneously；
5. by using novel slider material to add the AgSnO2 alloy of the special elementses such as Trace Indium, have excellent
Anti electric arc corrosion, the feature of mar proof, improve the anti-yaw damper ability of contact, increase the service life.
Product is mainly used in the high-voltage direct-current contact of the aspects such as railway traffic, New-energy electric vehicle, high-tension transformer
Device, at communication equipment (such as communication power supply, communication switch etc.), new forms of energy (such as water power, wind energy etc.) the most extensively use.
Accompanying drawing explanation
Fig. 1 is the contour structures schematic diagram of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the side view of the present invention；
Fig. 4 is the top view of the present invention；
Fig. 5 is the internal structure schematic diagram of the present invention；
Fig. 6 is the structural representation of middle magnetic ring coil block of the present invention；
Fig. 7 is the circuit theory diagrams of the present invention.
In figure: 1-shell, 2-electromagnet assembly, 3-arc-chutes, 4-arc extinguishing reed, 5-base, 6-microswitch, 8-is dynamic to be connect
Sheet one, 9-moves contact pin two, and 902-assists movable contact A, 10-baffle plate, 11-actively contact A, 12-striking reed B, 13-fork, 14-
Reed, 15-magnetic ring coil assembly, 1501-regulates screw, the quiet contact pin of 1502-two, 1503-quiet contact pin seat, 1504-embedded nut
B, 1505-bobbin two, 1506-magnetic ring coil, 1507-latch one, 1508-static contact spring piece, the quiet contact pin of 1509-one, 1510-is embedded in
The quiet contact pin of nut A, 1511-three, 1512-assists stationary contact, 1513-striking reed A, 18-catch bar.
Detailed description of the invention
Further describe technical scheme below in conjunction with the accompanying drawings, but claimed scope is not limited to institute
State.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the high-voltage DC contactor of a kind of band magnetic coil arc extinguishing of the present invention, bag
Including shell 1 and base 5, described shell 1 is fixing with base 5 to be connected, and is provided with magnetic ring coil assembly 15 and fork in described shell 1
13, described fork 13 top is fixed with dynamic contact pin 29；Electromagnet assembly 2, described electromagnet assembly 2 it is provided with below described shell 1
Movable end is connected with fork 13 one end by catch bar 18, described catch bar 18 can promote fork 13 around its installation axle swing；
Being provided with dynamic contact pin 1 below described magnetic ring coil assembly 15, described dynamic contact pin 8 one end is used for connecting positive source, and the other end leads to
Cross wire to be connected with dynamic contact pin 29；Described dynamic contact pin 29 is provided with actively contact A 11 and auxiliary movable contact A902；Described magnet ring
Quiet contact pin 3 1511 and auxiliary stationary contact 1512 it is correspondingly provided with on coil block 15.
Described shell 1 is additionally provided with arc-chutes 3, inside described arc-chutes 3 two sides baffle plate 10, is respectively provided with an arc extinguishing reed
4。
Described shell 1 one end is provided with microswitch 6, is provided with reed 14, described reed between microswitch 6 and catch bar 18
14 can occur elastic deformation under the promotion of catch bar 18.
Described shell 1 other end is additionally provided with striking reed B12, striking reed B12 and is connected with dynamic contact pin 8 by wire.
As shown in Figure 5, Figure 6, described magnetic ring coil assembly 15 includes quiet contact pin seat 1503, bobbin 2 1505 and magnet ring wire
Circle 1506, magnetic ring coil 1506 is formed by enamel-covered wire coiling, and magnetic ring coil 1506 is arranged on bobbin 2 1505, and and coil
Frame 1505 is installed along with in quiet contact pin seat 1503, and bobbin 1505 is fixed by embedded nut A1510 and embedded nut B1504
In quiet contact pin seat 1503；Quiet contact pin seat 1503 outer rim is additionally provided with striking reed A1513 and quiet contact pin 1, striking reed
A1513 and quiet contact pin 1 are fixed on quiet contact pin seat 1503 by regulation screw 1501 and latch 1 respectively；Striking
Reed A1513 is respectively arranged at two ends with quiet contact pin 2 1502 and auxiliary stationary contact 1512, and quiet contact pin 1 one end is for connect with outside
The union joint connect, the other end is provided with quiet contact pin 3 1511, and wherein, quiet contact pin 3 1511 is adjacent with auxiliary stationary contact 1512 end；?
A static contact spring piece 1508 it is additionally provided with, for guaranteeing quiet the connecing of striking reed A1513 between striking reed A1513 and quiet contact pin seat 1503
Sheet 2 1512 end is in vacant state.
Described dynamic contact pin 29 and fork 13 are for being welded to connect.
The technical program uses the mode of main contacts band auxiliary contact, before product load main contacts is connected, and auxiliary contact
First connect；Before main contacts disconnects, auxiliary contact were first connected before main contacts disconnects, and disconnected after main contacts disconnects
Opening, the electric arc of generation is all at auxiliary contact, because producing electricity when main contacts can be avoided to be switched on or switched off by this working method
Arc and cause contact impaired, it is ensured that load circuit works safely and reliably.
The principle of orientation displacement can be produced according to charged particle in magnetic field, introduce magnetic quenching technology, use winding wire
Circle energising produces magnetic field, charged particle when contacting or disconnection is applied active force and makes it move to predetermined direction, adopt
With arc-chutes 3, electric arc is blowed to inside cavity, electric arc is elongated, cut off, cools down arc extinguishing, improve the C-V characteristic of electric arc,
So that arc extinction, reduce the ablation to contact, reduce the transfer of slider material.
The technical program uses single winding coil, when being energized to winding coil, can produce around hot-wire coil
Magnetic field, its magnetic field intensity B size determines according to electrical current I size, and electrical current is the biggest, and the induced field of generation is also more
Greatly, and, magnetic quenching is a dynamic process, changes along with the size variation of input current.Electric current is big, and magnetic blow-out is also big,
Electric current is little, and magnetic blow-out reduces the most therewith.
Electromagnet assembly 2 is the control unit of this product main contacts, and controlling circuit for high-voltage DC contactor provides control
Signal, produces magnetic energy by coil, makes iron core move under the influence of a magnetic field, drives main contacts contact simultaneously or disconnects, and is to produce
The actuator of product.
Described magnetic ring coil assembly 15 includes bobbin 2 1505, winding enamel-covered wire on bobbin 2 1505, forms magnetic
Ring coil assembly 15, it is provided that arc extinguishing magnetic field intensity B.
Auxiliary movable contact A902 and the auxiliary stationary contact 1512 i.e. auxiliary contact of product, connect electricity for magnetic ring coil 1506
Source, makes arcing on two auxiliary contact, thus protects main contacts not by the ablation of electric arc.
Rotating shaft fork 13, it is achieved the main and auxiliary interlinked mechanism helping contact action.
Base 5, supports whole product and product installs location.
Baffle plate 10, provides for winding magnetic coil and draws magnetic action, provide magnetic blow-out for arc extinguishing.
Arc-chutes 3, the electric arc produced when main contacts is switched on or switched off by magnetic blow-out guide to arc-extinguish chamber inner chamber carry out elongating,
Cut off, cool down and reach the effect of arc extinguishing.
When catalyst is installed, this magnetic ring coil assembly 15 being put into shell 1, fixing magnetic ring coil assembly 15, by coiling
Good coil two lead-in wire is welded on wire and is passed by 1 liang of wire hole of shell, is respectively welded at shell 1 and connects with the two of base 5
On line sheet, the input signal as this circuit controls end A1 and A2, as shown in Figure 6.
Dynamic contact pin 1 terminates positive source, and the other end is connected with dynamic contact pin 29 by soft strand copper braided wire, also leads to simultaneously
Cross soft strand copper braided wire and be connected to striking reed B12.Dynamic contact pin 29 one end is fixed on fork 13, and it is dynamic that the other end is welded with auxiliary
Contact A 902, stage casing is welded with actively contact A 11；One terminable products load of quiet contact pin 1, the other end is welded with quiet connecing
Sheet 1511；Striking reed A1513 is respectively arranged at two ends with quiet contact pin 2 1502 and auxiliary stationary contact 1512.
Enamel-covered wire is wound on bobbin 2 1505 and obtains magnetic ring coil 1506, and magnetic ring coil 1506 is mounted to quiet
Obtain magnetic ring coil assembly 15 in contact pin seat 1503, magnetic ring coil assembly 15 is fixed on the half of shell 1 middle magnetic ring coil 1506
On circular arc, two lead-in wires of magnetic ring coil 1506 are respectively welded on embedded nut A1510 and embedded nut B1504；Setting-in
Nut A1510 connects with auxiliary stationary contact 1512, and embedded nut B1504 is also secured in quiet contact pin 1；Latch one
In 1507 centre bores being penetrated into quiet contact pin seat 1503 and bobbin 2 1505, the two ends of latch 1 are connected with baffle plate 10,
Form the effect of magnetic of drawing, make Distribution of Magnetic Field to around auxiliary contact；Parallel position in shell 1 both sides with contact is put into two panels and is gone out
Arc reed 4, the cavity two ends that striking reed A1513 and striking reed B12 is put into arc-chutes 3, it is fixed on by arc extinguishing reed 4
On shell.
Embodiment one
Assuming that rated operational current is 250A, its running voltage is 1500V～2000V.
As it is shown in fig. 7, the technical program realize principle:
Product current direction: positive source is connected with dynamic contact pin 1, dynamic contact pin 1 and dynamic contact pin 29 and striking reed
B12 turns on, and quiet contact pin 1 connects load.
When actively contact A 11 and quiet contact pin 3 1511 turn on and is stably connected with, dynamic contact pin 29 is arrived in the driven contact pin of electric current 1,
Through active contact A 11 and quiet contact pin 3 1511, turn on quiet contact pin 1, and between load, form current loop.
In auxiliary movable contact A902 and quiet contact pin 2 1512 conducting and the moment of disconnection, movable contact A902 and quiet contact pin two
1512 contact positions produce electric arc because of high pressure effect.Meanwhile, electric current is through dynamic contact pin 1, dynamic contact pin 29, auxiliary movable contact A902, quiet
Contact pin 2 1512, regulation screw 1501, magnetic ring coil 1506, embedded nut B1504, quiet contact pin 1, to load, form wink
Shi Huilu, now magnetic ring coil 1506 energising produces induced field, according to left hand rule principle, when electric current moves in magnetic field pair
The electric arc that movable contact A902 produces with quiet contact pin 2 1512 contact position carries out magnetic quenching.
Above-mentioned magnetic blow-out is band point ion by Lorentz force action direction, and electric arc, under magnetic blow-out effect, makes electric arc elongate, draws
Long effect has two: 1. makes electric arc elongate the cut-out intracavity in arc-chutes 3, makes electric arc segmentation disconnect, and cools down arc extinguishing；2. will
The electric arc of burning elongates, and makes arc drop increase, shows according to the tested results: electric arc often elongates 1 inch of electric arc produced
Voltage drop value is about 25V, according to arc through voltage equation: IR=U (supply voltage)-ε (arc drop total value), according to public affairs
Formula, when arc drop total value exceedes supply voltage value, IR value is negative value, illustrates that the electric current breakdown value in loop is zero, i.e. returns
It is zero that road punctures the current value in loop, does not has electric current to flow through, and will not produce electric arc, reaches the effect of arc extinguishing.This process exists
Complete in the time of tens milliseconds.
Product actively contact A 11 contacts with quiet contact pin 3 1511, when active contact A 11 contacts with quiet contact pin 3 1511 therewith
Can rearward, i.e. main contacts conducting；Movable contact A902 disconnects therewith with quiet contact pin 2 1512, and now magnetic ring coil 1506 does not has electricity
Stream, magnetic field disappears, does not produce the effect of Lorentz force.
In like manner, when main contacts needs to disconnect, before main contacts disconnects, movable contact A902 starts to connect with quiet contact pin 2 1512
Touching, after main contacts is fully disconnected, movable contact A902 disconnects the most therewith with quiet contact pin 2 1512.In movable contact A902 and quiet contact pin
2 1512 moments disconnected, because of action of high voltage, movable contact A902 and quiet contact pin 2 1512 breakdown generation arc burning, by upper
Mode of stating carries out magnetic quenching to product again.
In the above described manner, the generation point of electric arc having been transferred to auxiliary contact, and has carried out magnetic quenching timely, protection is produced
Product main contacts does not produce electric arc when being switched on or switched off, thus ensure that the reliability of product, improves the service life of product.
Embodiment two
It addition, slider material is not in use by materials such as AgCu, AgNi, and it is dilute to be utilized in AgSnO2 alloy increasing trace
Having metallic element, this material has higher heat stability, resistance fusion welding and low material transfer characteristic, and SnO2 granule melts at silver
The middle viscosity that can make motlten metal increases, and makes arc erosion reduce.Repeatedly acting on through electric arc, SnO2 composition remains at contact table
Face retains, and contact anti electric arc corrosion and resistance fusion welding can will not be remarkably decreased, therefore have the highest service life, so AgSnO2 tool
There are excellent anti electric arc corrosion and mar proof, improve the anti-yaw damper ability of product.
Embodiment three
When the coil of electromagnet assembly 2 applies 110V supply voltage, electromagnet assembly 2 is started to move by the effect of magnetic force
Make, drive catch bar 18 to move, catch bar 18 actuating spring 14, reed 14 is fitted with microswitch 6, makes microswitch 6 connect,
Realize control signal output.
Meanwhile, catch bar 18 drives fork 13 one end to swing certain amplitude around its pin joint, and dynamic contact pin 29 is the most inverse
Hour hands rotate, and auxiliary movable contact A902 first contacts with quiet contact pin 2 1502, Contact, and electric current is through dynamic contact pin 1, dynamic contact pin two
9, auxiliary movable contact A902, quiet contact pin 2 1512, regulation screw 1501, magnetic ring coil 1506, embedded nut B1504, quiet contact pin
One 1509 to load, forms instantaneous loop, produces electric arc between auxiliary movable contact A902 and quiet contact pin 2 1502；Magnet ring wire simultaneously
Circle 1506 energising produces induced fields, by electric arc in arc-chutes 3 between striking reed B12 and striking reed A1513 and go out
Carry out between the arc extinguishing reed 4 of arc chamber 3 both sides elongating, cut off, lower the temperature, arc extinguishing.
Along with fork 13 continues to rotate counterclockwise, dynamic contact pin 29 is driven to continue counterclockwise movement so that actively contact A 11
Contact with quiet contact pin 3 1511, it is achieved main contacts is connected.Now, the driven contact pin of electric current 1 is to dynamic contact pin 29, through active contact
A11 and quiet contact pin 3 1511, turn on quiet contact pin 1, and forms current loop between load.
Fork 13 continues to rotate counterclockwise, and auxiliary movable contact A902 disconnects with quiet contact pin 2 1512, between power supply and load
Form stabling current.
When the coil power voltage of electromagnet assembly 2 disconnects, electromagnet assembly 2 starts to reset, and now, catch bar 18 is to the left
Translation, fork 13 rotates clockwise, and dynamic contact pin 29 the most gradually recovers shape.Break with quiet contact pin 3 1511 in active contact A 11
Before opening, auxiliary movable contact A902 first contacts with quiet contact pin 2 1502.Along with fork 13 continues to rotate clockwise, actively contact
A11 and quiet contact pin 3 1511 disconnection, magnetic ring coil 1506 energising produces induced field, is assisting movable contact A902 first and quiet contact pin
Moment before 2 1502 disconnections, auxiliary movable contact A902 first and produces electric arc between quiet contact pin 2 1502, and again at arc-chutes 3
Inside carry out elongating, cut off, lower the temperature, magnetic quenching, it is achieved main contacts is protected.
Claims (8)
1. a high-voltage DC contactor for band magnetic coil arc extinguishing, including shell (1) and base (5), described shell (1) and base
(5) fixing connection, it is characterised in that: described shell (1) is provided with magnetic ring coil assembly (15) and fork (13), described fork
(13) top is fixed with dynamic contact pin two (9)；Described shell (1) lower section is provided with electromagnet assembly (2), described electromagnet assembly (2)
Movable end be connected with fork (13) one end by catch bar (18), described catch bar (18) can promote fork (13) around its installation
Axle swings；Described magnetic ring coil assembly (15) lower section is provided with dynamic contact pin one (8), and described dynamic contact pin (8) one end is used for connecting power supply
Positive pole, the other end is connected with dynamic contact pin two (9) by wire；Described dynamic contact pin two (9) is provided with actively contact A (11) and auxiliary
Movable contact A (902)；Quiet contact pin three (1511) and auxiliary stationary contact (1512) it is correspondingly provided with on described magnetic ring coil assembly (15).
The high-voltage DC contactor of a kind of band magnetic coil arc extinguishing the most according to claim 1, it is characterised in that: described shell
(1) being additionally provided with arc-chutes (3) in, inner side, described arc-chutes (3) two sides baffle plate (10) is respectively provided with an arc extinguishing reed (4).
The high-voltage DC contactor of a kind of band magnetic coil arc extinguishing the most according to claim 1, it is characterised in that: described shell
(1) other end is additionally provided with striking reed B (12), and striking reed B (12) is connected with dynamic contact pin (8) by wire.
The high-voltage DC contactor of a kind of band magnetic coil arc extinguishing the most according to claim 1, it is characterised in that: described magnet ring
Coil block (15) includes quiet contact pin seat (1503), bobbin two (1505) and magnetic ring coil (1506), magnetic ring coil (1506)
Being formed by enamel-covered wire coiling, magnetic ring coil (1506) is arranged on bobbin two (1505), and pacifies together with bobbin (1505)
Being contained in quiet contact pin seat (1503), bobbin (1505) is fixed on quiet by embedded nut A (1510) and embedded nut B (1504)
In contact pin seat (1503)；Quiet contact pin seat (1503) outer rim is additionally provided with striking reed A (1513) and quiet contact pin one (1509), striking spring
Sheet A (1513) and quiet contact pin one (1509) are fixed on quiet contact pin seat by regulation screw (1501) and latch one (1507) respectively
(1503) on；Striking reed A (1513) is respectively arranged at two ends with quiet contact pin two (1502) and auxiliary stationary contact (1512), quiet contact pin one
(1509) one end is the union joint with external connection, and the other end is provided with quiet contact pin three (1511), wherein, quiet contact pin three (1511) with
Auxiliary stationary contact (1512) is held adjacent.
The high-voltage DC contactor of a kind of band magnetic coil arc extinguishing the most according to claim 4, it is characterised in that: described striking
It is additionally provided with a static contact spring piece (1508) between reed A (1513) and quiet contact pin seat (1503), is used for guaranteeing striking reed A (1513)
Quiet contact pin two (1512) end is in vacant state.
The high-voltage DC contactor of a kind of band magnetic coil arc extinguishing the most according to claim 1, it is characterised in that: described moving connects
Sheet two (9) and fork (13) are for being welded to connect.
The high-voltage DC contactor of a kind of band magnetic coil arc extinguishing the most according to claim 1, it is characterised in that: described shell
(1) one end is provided with microswitch (6), is provided with reed (14) between microswitch (6) and catch bar (18), and described reed (14) can
Elastic deformation is there is under the promotion of catch bar (18).
The high-voltage DC contactor of a kind of band magnetic coil arc extinguishing the most according to claim 1, it is characterised in that: described quiet connect
Sheet three (1511), actively contact A (11), auxiliary movable contact A (902), auxiliary stationary contact (1512) all use at AgSnO2 alloy
In increase yttrium synthetic material.
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| CN201610668595.7A CN106098477A (en) | 2016-08-15 | 2016-08-15 | A kind of high-voltage DC contactor of band magnetic coil arc extinguishing |
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| CN201610668595.7A CN106098477A (en) | 2016-08-15 | 2016-08-15 | A kind of high-voltage DC contactor of band magnetic coil arc extinguishing |
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| CN201610668595.7A Pending CN106098477A (en) | 2016-08-15 | 2016-08-15 | A kind of high-voltage DC contactor of band magnetic coil arc extinguishing |
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| CN106531585A (en) * | 2016-11-30 | 2017-03-22 | 金平娣 | Rotary arc extinguishing mechanism of power circuit breaker |
| CN108091524A (en) * | 2017-12-12 | 2018-05-29 | 北京中车赛德铁道电气科技有限公司 | A kind of transmission connecting structure for heavy DC contactor |
| CN108133852A (en) * | 2017-12-07 | 2018-06-08 | 北京中车赛德铁道电气科技有限公司 | A kind of vacuum circuit breaker signal feedback mechanism |
| CN109920704A (en) * | 2019-03-28 | 2019-06-21 | 浙江英洛华新能源科技有限公司 | Anti- Lorentz force relay |
| CN110574135A (en) * | 2017-03-23 | 2019-12-13 | 沙尔特宝有限公司 | Switching device with improved permanent-magnet arc quenching |
| CN111128607A (en) * | 2020-01-09 | 2020-05-08 | 嘉兴赛铁龙电气有限公司 | Electromagnetic contactor for electric locomotive |
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| CN111128607A (en) * | 2020-01-09 | 2020-05-08 | 嘉兴赛铁龙电气有限公司 | Electromagnetic contactor for electric locomotive |
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