CN111916311A - High-voltage direct-current contactor with two sets of dynamic contact points - Google Patents
High-voltage direct-current contactor with two sets of dynamic contact points Download PDFInfo
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- CN111916311A CN111916311A CN202010922200.8A CN202010922200A CN111916311A CN 111916311 A CN111916311 A CN 111916311A CN 202010922200 A CN202010922200 A CN 202010922200A CN 111916311 A CN111916311 A CN 111916311A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/041—Details concerning assembly of relays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention provides a high-voltage direct current contactor with two groups of dynamic contacts, which comprises an electromagnetic assembly and a contact assembly; the electromagnetic assembly and the contact assembly are respectively arranged in the power cavity and the insulating cavity, and the power cavity and the insulating cavity are arranged in the shell and are separated by the magnetic conduction plate; the two groups of switching contacts also provide a more flexible model selection idea for the general assembly design of a user; the stainless steel fixing sheet is used for carrying out transmission separation on the two groups of movable contacts, and the plasma welding mode is adopted for reinforcement, so that the connection strength is reliably ensured, and the transmission impact resistance of the connection part is greatly improved; the inside of the ceramic is designed into an H-shaped movable cavity, which has a limiting effect on the movement of two groups of movable contacts and can also have physical and electrical isolation between the limited groups.
Description
Technical Field
The invention relates to a high-voltage direct current contactor with two sets of dynamic contact points.
Background
A high-voltage dc contactor is an electronic control device having an input circuit and an output circuit, which is generally used in an automatic control circuit, and which is actually an "automatic switch" that uses a small current to control a large current. The circuit plays the roles of automatic cut-off, safety protection, circuit conversion and the like.
The high-voltage direct-current contactor is taken as one of the large types of contactors, the existing high-voltage direct-current contactors are divided into 2 series, one series is an epoxy sealing structure, and the other series is a ceramic sealing structure. The switching circuit is mainly applied to a power distribution system of military equipment and is also used for main power supply loop switching in the fields of new energy electric automobiles, charging piles, energy storage, photovoltaics, power supplies, communication and the like.
At present, with the demands of integration, miniaturization and intellectualization of various application fields, especially the demands of military fields such as aerospace and aviation, the single contact form no longer meets the current use requirements, and the number of groups of load of the contactor needs to be developed towards two or more groups. Realize "one is multi-purpose".
Disclosure of Invention
In order to solve the technical problem, the invention provides a high-voltage direct-current contactor with two sets of dynamic contact points.
The invention is realized by the following technical scheme.
The invention provides a high-voltage direct current contactor with two groups of dynamic contacts, which comprises an electromagnetic assembly and a contact assembly; the electromagnetic assembly and the contact assembly are respectively arranged in the power cavity and the insulating cavity, and the power cavity and the insulating cavity are arranged in the shell and are separated by the magnetic conduction plate;
the electromagnetic component drives the armature to move through electromagnetism, and the armature is connected with the contact component;
the contact assembly comprises a fixed piece, the fixed piece is connected with the armature, and the movable contact assembly is arranged on the fixed piece;
and an elastic piece is arranged between the armature and the electromagnetic assembly to reset the armature.
The high-voltage direct-current contactor comprises two groups of dynamic contacts, wherein a contact part comprises four static contacts and a contact system, the contact system comprises 2 contact bridges and 2 transmission assemblies, and each transmission assembly comprises a snap ring, a gasket, a contact bridge insulating gasket, an over-travel spring, a magnetizer insulating gasket, a fixed rod, a transmission rod and a fixed sheet;
the upper end of the fixed rod is assembled with the magnetizer insulating washer, the over-travel spring, the contact bridge insulating washer, the washer and the snap ring, the lower end of the fixed rod is assembled with the fixed piece and symmetrically distributed at the two ends of the fixed piece, and the transmission rod is assembled at the central position of the fixed piece. When the contactor is started, the transmission rod drives the contact bridge to be respectively contacted with the two static contacts and the auxiliary contact, and the contacts in a mutually disconnected state form a conduction loop.
The electromagnetic component comprises a coil, a static iron core and a yoke, the yoke is wrapped outside the coil, the static iron core is installed in a hole in the center of the coil, a transmission rod is movably installed in the center of the static iron core, two ends of the transmission rod are respectively connected with the centers of an armature and a fixing piece, and the yoke and the top end of the static iron core are fixedly connected to a magnetic conduction plate.
And the opposite surfaces of the armature and the static iron core are respectively provided with a cylindrical groove, and the two cylindrical grooves are connected through a restoring spring.
An armature cover is further installed in a hole in the center of the coil, the armature cover separates the armature and the static iron core from the coil, and the upper end of the armature cover is fixedly connected to the magnetic conduction plate.
The coil comprises a coil framework, an enameled wire is wound at the middle part of the coil framework, two ends of the coil framework are fixedly connected with discs, and two coil pins are mounted on the discs at the lower ends of the coil framework and connected with two poles of the enameled wire.
The movable contact assembly comprises a fixed rod, a contact bridge insulating washer, a fixed sheet insulating washer and a contact bridge, wherein the fixed rod is fixed on the fixed sheet, and through holes are processed in the centers of the fixed sheet insulating washer, the contact bridge insulating washer and are respectively sleeved at the upper end and the lower end of the fixed rod; the ring arch is installed respectively to the one end that stationary blade insulating pad and contact bridge insulating washer kept away from mutually, and the lower extreme of contact bridge insulating washer is installed in the through-hole at stationary blade insulating pad center, the lower extreme of contact bridge insulating washer still overlaps there is the contact bridge, and the upper end installation overtravel spring of stationary blade insulating pad, overtravel spring and the lower extreme contact of contact bridge.
The upper end and the lower end of the fixed rod are respectively provided with a clamping groove and a limiting step, the limiting step is arranged in the fixed sheet, and the magnetic steel and the clamping ring are arranged in the clamping groove.
Two groups of movable contact assemblies are arranged at two ends of the fixed piece.
The insulating chamber passes through ceramic subassembly and forms, including ceramic cover and welding frame piece, the welding frame piece is installed on ceramic cover lower extreme opening, and welding frame piece cover is on the magnetic conduction board and its middle part movable mounting stationary blade, the top of ceramic cover is fixed with four stationary contacts and corresponds respectively with the both ends of two contact bridges, still installs two sets of magnet steel on ceramic subassembly's the outer wall, and magnet steel subassembly includes the magnet steel, and the magnet steel of two different polarities passes through the magnet steel support to be fixed in the both sides of two adjacent stationary contacts, the inner wall top mid-mounting of ceramic cover has the pottery to cut off, and criss-cross 30 keep apart four stationary contacts.
The shell lateral wall is square step thin-walled structure, the contact subassembly is installed to the step upper end, step lower extreme installation power subassembly, the edge of magnetic conduction board and welding frame piece is installed in step department, processing has the boss at the bottom of the shell on the lower extreme opening lateral wall four corners of shell, all processed the boss hole on four bosses at the bottom of the shell, the bottom passes through the bolt and fixes at the shell bottom and seals the shell with the boss hole, the bottom bisymmetry side of shell still rigid coupling has two shell bushes, shell inner wall top still rigid coupling has criss-cross shell baffle.
The invention has the beneficial effects that: the two groups of switching contacts also provide a more flexible model selection idea for the general assembly design of a user; the stainless steel fixing sheet is used for carrying out transmission separation on the two groups of movable contacts, and the plasma welding mode is adopted for reinforcement, so that the connection strength is reliably ensured, and the transmission impact resistance of the connection part is greatly improved; the inside of the ceramic is designed into an H-shaped movable cavity, which has a limiting effect on the movement of two groups of movable contacts and can also have physical and electrical isolation between the limited groups.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is an external structural view of the present invention;
FIG. 4 is a schematic view of the coil structure of the present invention;
FIG. 5 is a schematic diagram of the movable contact assembly of the present invention;
FIG. 6 is a schematic view of the transmission configuration of the present invention;
FIG. 7 is a schematic cross-sectional view of the movable contact assembly of the present invention;
FIG. 8 is a schematic view of the drive link construction of the present invention;
FIG. 9 is a schematic view of a retaining bar construction of the present invention;
fig. 10 is an external structural schematic diagram of the moving contact assembly of the present invention;
FIG. 11 is a schematic view of the anchor sheet of the present invention;
FIG. 12 is a schematic view of the housing construction of the present invention;
FIG. 13 is a schematic view of the bottom structure of the housing of the present invention;
FIG. 14 is a schematic view of the magnetic steel structure of the present invention;
FIG. 15 is a schematic view of a magnetic steel mounting structure of the present invention;
in the figure: 1-exhaust pipe, 2-magnetic steel bracket, 3-ceramic component, 301-ceramic cover, 302-stationary contact, 303-welding frame piece, 304-ceramic convex rib, 305-ceramic partition, 4-fixing rod, 401-fixing rod bottom, 402-clamping groove, 403-limit step, 5-fixing piece, 501-guide hole, 502-fixing hole, 6-contact bridge insulating washer, 7-fixing piece insulating pad, 8-overtravel spring, 9-contact bridge, 10-magnetic conduction plate, 11-coil, 1101-coil skeleton, 1102-enameled wire, 1103-coil pin, 12-transmission rod, 1201-transmission rod end face, 1202-step, 13-armature cover, 14-armature, 15-stationary core, 16-shell, 1601-shell partition board, 1602-shell bottom boss, 1603-boss hole, 17-shell bushing, 18-bottom cover, 19-restoring spring, 20-magnetic steel, 21-snap ring, 22-coil lead-out wire, 23-yoke iron and 24-magnetic steel.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, a high voltage dc contactor with two sets of moving contacts comprises an electromagnetic assembly and a contact assembly; the electromagnetic assembly and the contact assembly are respectively arranged in a power cavity and an insulation cavity, and the power cavity and the insulation cavity are arranged in the shell 16 and are separated by a magnetic conduction plate 10;
the electromagnetic component drives the armature to move through electromagnetism, and the armature is connected with the contact component;
the contact assembly comprises a fixed plate 5, the fixed plate 5 is connected with the armature, and the movable contact assembly is arranged on the fixed plate 5;
and an elastic piece is arranged between the armature and the electromagnetic assembly to reset the armature.
Referring to fig. 1 to 5, the stationary core 15 and the yoke 23 are riveted to the magnetic conductor 10, the exhaust pipe 1 and the magnetic conductor 10 are assembled by brazing, the coil assembly 11 is assembled inside the yoke 23, and the ring 23 is an -shaped ring member and wraps the lower end and the outer side of the coil assembly 11 respectively. The transmission rod 12 is arranged in the middle of the static iron core 15, the armature 14 is assembled at the bottom of the transmission rod 12, the restoring spring 19 is arranged in an inner cavity between the static iron core 15 and the armature 14, and the armature housing 13 is welded on the surface of the magnetizer 10 through laser. The fixed plate 5 is assembled at the top end of the transmission rod 12, the fixed rod 4 is assembled in the fixed plate 5, and the contact bridge insulating washer 6, the fixed plate insulating washer 7, the over-travel spring 8, the contact bridge 9, the washer 20 and the snap ring 21 are sequentially assembled by relying on the fixed rod 4 to form a group of moving contact parts. The displacement of the over travel spring 8 provides contact pressure for the moving contact and the static contact of the product, and the restoring spring 19 generates breaking restoring force after the coil is de-electrified.
As shown in fig. 8, the transmission rod 12 is inserted into the assembly hole of the fixing piece 5 and then is reinforced by plasma welding, wherein the transmission rod end surface 1201 is a plasma welding position, and the two fixing rods 4 are inserted into the assembly holes at both sides of the fixing piece 5 and then are reinforced by plasma welding, wherein the transmission rod end surface 1201 is a plasma welding position. Stationary blade insulating washer 7 is packed into along dead lever 4, stationary blade insulating washer bottom and stationary blade contact, and overrun spring 8 is packed into along stationary blade insulating washer 7, bottom direct contact insulating washer, then the repacking contact bridge 6, contact bridge bottom and the contact of overrun spring top, contact bridge insulating washer 6 is packed into in the contact bridge hole, packing ring 20 and snap ring 21 of packing into in proper order at last, the snap ring card is gone into in the draw-in groove at dead lever top.
As shown in fig. 9, the fixing rod is made of stainless steel, the clamping groove 402 is a clamping ring assembling groove, and the depth and width of the groove are matched with the size of the clamping ring. The step 403 is in contact with the fixing piece, and the bottom surface 401 is a welding position for plasma welding.
The electromagnetic component comprises a coil 11, a static iron core 15 and a yoke 23, wherein the yoke 23 is wrapped on the outer side of the coil 11, the static iron core 15 is installed in a hole in the center of the coil 11, a transmission rod 12 is movably installed in the center of the static iron core 15, two ends of the transmission rod 12 are respectively connected with the centers of an armature 14 and a fixing piece 5, and the yoke 23 and the top end of the static iron core 15 are fixedly connected on a magnetic conduction plate 10.
The opposite surfaces of the armature 14 and the static iron core 15 are respectively provided with a cylindrical groove, and the two cylindrical grooves are connected through a restoring spring 19.
An armature cover 13 is further installed in a hole in the center of the coil 11, the armature cover 13 separates the armature 14 and the static iron core 15 from the coil 11, and the upper end of the armature cover 13 is fixedly connected to the magnetic conduction plate 10.
As shown in fig. 4, the coil assembly includes a 1101 coil bobbin, a 1102 enameled wire and a 1103 coil pin, wherein the 1101 coil bobbin and the 1103 coil pin are injection molded in a mold, and a coil lead-out wire 22 is welded at 1803 coil pin as a coil input terminal of the contactor.
The coil 11 comprises a coil frame 1101, an enameled wire 1102 is wound at the middle part of the coil frame 1101, two ends of the coil frame 1101 are fixedly connected with discs, and two coil pins 1103 are installed on the discs at the lower ends of the coil frame 1101 and connected with two poles of the enameled wire 1102.
The movable contact assembly comprises a fixing rod 4, a contact bridge insulating washer 6, a fixing piece insulating washer 7 and a contact bridge 9, wherein the fixing rod 4 is fixed on a fixing piece 5, as shown in fig. 11, the fixing piece 5 is made of stainless steel materials and serves as a connecting piece of the whole transmission part to distribute the transmission force of the transmission rod 6 to two groups of movable contact parts, a fixing piece hole 501 is an assembly hole of the transmission rod 6, and holes 502 are symmetrically distributed on two sides of the fixing piece and serve as assembly holes of the two fixing rods 4. Through holes are processed in the centers of the fixed sheet insulating pad 7, the contact bridge insulating washer 6 and are respectively sleeved at the upper end and the lower end of the fixed rod 4; the one end that stationary blade insulating pad 7 and contact bridge insulating washer 6 kept away from mutually installs the ring arch respectively, and the lower extreme of contact bridge insulating washer 6 is installed in the through-hole at stationary blade insulating pad 7 center, contact bridge insulating washer 6's lower extreme still overlaps there is contact bridge 9, and the upper end of stationary blade insulating pad 7 is installed overtravel spring 8, and overtravel spring 8 contacts with the lower extreme of contact bridge 9.
The upper end and the lower end of the fixed rod 4 are respectively provided with a clamping groove 402 and a limiting step 403, the limiting step 403 is arranged in the fixed plate 5, and the magnetic steel 20 and the clamping ring 21 are arranged in the clamping groove 402.
Two groups of movable contact assemblies are arranged at two ends of the fixed piece 5.
As shown in fig. 1, 3, 5, the insulating chamber passes through ceramic subassembly 3 and forms, including ceramic cover 301 and welding frame piece 303, welding frame piece 303 is installed on ceramic cover 301 lower extreme opening, and welding frame piece 303 covers on magnetic conduction plate 10 and its middle part movable mounting stationary blade 5, the top of ceramic cover 301 is fixed with four stationary contacts 302 and corresponds respectively with two both ends that contact bridge 9, still installs two sets of magnet steel on ceramic subassembly 3's the outer wall, and magnet steel subassembly includes magnet steel 24, and two not same polarity's magnet steel 24 pass through magnet steel support 2 to be fixed in two adjacent stationary contact 302's both sides, the inner wall top mid-mounting of ceramic cover 301 has the pottery to cut off 305, and criss-cross 30 keeps apart four stationary contacts 302. Referring to fig. 6, the ceramic assembly includes four stationary contacts 302, a ceramic chamber 301, and a welding frame 303. The fixed contact 302 is assembled at the top end of the ceramic cavity 301 in a brazing mode, and the welding frame piece 303 is assembled at the bottom end of the ceramic cavity 301 in a brazing mode. An insulating groove with the width of 1mm and the depth of 0.5mm is designed between every two contact positions at the top end of the ceramic part so as to increase the creepage distance between the contacts
The ceramic part is designed into an H-shaped cavity, two groups of movable contact parts are assembled on two sides, a fixed sheet moving area is arranged in the middle of the cavity, the convex ribs 304 of the ceramic part play a limiting role in the two groups of movable contact parts, the contact bridge is prevented from shaking in the contact process to cause unstable contact with a stationary contact, the ceramic part partition 305 can effectively isolate electric arcs between the two groups, and the two groups of electric arcs are prevented from touching and being in short circuit in the breaking process of the contact bridge.
As shown in fig. 12 and 13, the shell adopts dupont nylon injection moulding, 1601 is the shell baffle, plays the physical isolation effect to four stationary contacts, and shell bush 17 carries out injection moulding in the model with the shell, and shell bottom four corners 1602 is protruding step to as shell bottom and outside contact surface, the protruding design in four corners can prevent that the deformation leads to the contactor to be crooked by the injection moulding of shell long limit. Hole 1603 is the blind hole of design, as the pilot hole with bottom plate 18 the 16 lateral walls of shell are square step thin-walled structure, step upper end installation contact subassembly, step lower extreme installation power components, the edge mounting of magnetic conduction plate 10 and welding frame piece 303 is in step department, processing has shell bottom boss 1602 on the lower extreme opening lateral wall four corners of shell 16, all processed boss hole 1603 on four shell bottom bosses 1602, bottom 18 is fixed and is sealed shell 16 in shell 16 bottom through bolt and boss hole 1603, the bottom bisymmetry side of shell 16 still rigid coupling has two shell bush 17, shell 16 inner wall top still rigid coupling has crisscross shell baffle 1601.
As shown in fig. 10 and 14, the magnetic steel combination comprises a 19 magnetic steel bracket and 24 magnetic steels, two groups of magnetic steel combinations are assembled outside the ceramic part, a magnetic field generated by each group of magnetic steel combination acts on a group of stationary contacts, electric arcs generated by switching between the contacts are influenced by an external magnetic field to deflect, so that the electric arcs are not burnt between the contacts, and the contacts are protected from being influenced by arc ablation to reduce the reliability of products. Because of the design of the H-shaped cavity in the ceramic cavity, the contacts between groups are isolated by ceramic partition plates, and N, S of the magnetic steel of the group members is not specified clearly. Fig. 15 is one of the schematic diagrams.
Example (b): the high-voltage direct-current contactor comprises two sets of dynamic contact, and a shell, wherein the shell is formed by adopting a shell bushing of DuPont nylon and stainless steel through in-mold injection molding; the bottom plate is matched with the shell in a screw fastening mode; coil combination: the coil assembly comprises a coil framework, a winding enameled wire and a coil pin, and the coil framework and the coil pin are molded in an injection molding mode; yoke iron: the yoke iron is one part of the whole contactor magnetic flux loop, and the coil assembly is assembled on the inner side of the yoke iron; a contact system; the contact system includes: ceramic assembly, transmission assembly, armature housing, wherein ceramic assembly is ceramic member, four stationary contacts and welds the frame piece, and the part is assembled through brazing, the transmission combination includes: the upper end of the fixed rod is assembled with the magnetizer insulating washer, the over travel spring, the contact bridge insulating washer, the washer and the snap ring, the lower end of the fixed rod is assembled with the fixed piece and is symmetrically distributed at two ends of the fixed piece, the upper end of the transmission rod is assembled at the central position of the fixed piece, the lower end of the transmission rod is assembled with the armature, and the restoring spring is assembled; magnetic steel combination: the magnetic steel combination comprises a magnetic steel bracket and magnetic steel, and the magnetic steel combination is assembled outside the ceramic component to perform magnetic blow breaking on the electric arc between the contacts.
According to the contactor provided by the embodiment of the invention, the four static contacts are assembled at the top end of the ceramic part in a brazing mode, and the welding frame piece is brazed at the bottom end of the ceramic part.
Furthermore, an insulating groove with the width of 1mm and the depth of 0.5mm is designed between every two contact positions at the top end of the ceramic piece, so that the creepage distance between the contacts can be increased.
Furthermore, the ceramic part is internally designed into an H-shaped movable cavity, so that the limit effect can be realized on the moving process of the contact bridge, the reliable contact between the contact bridge and the static contact is ensured, and meanwhile, the physical electrical isolation is realized between the contact group and the group, and the arc discharge and the electric short circuit between the two groups are avoided.
Furthermore, the equal subsection of static contact is equal to the top surface, and the distance between every two contacts is equal.
According to the contactor provided by the embodiment of the invention, in the structure of the transmission system, the tail end of the transmission rod is fixed with the armature through the designed threads, and then is reinforced in a plasma welding mode. The top end of the transmission rod is designed into a step shape, is connected with the fixing piece and is reinforced in a plasma welding mode.
Furthermore, the reinforcing mode can also be fixed in a riveting mode.
Furthermore, the fixed sheet is of an oval sheet structure and is used as a support piece of the two groups of movable contact parts, namely, the force of the transmission rod acts on the two groups of movable contacts through the fixed sheet simultaneously.
Furthermore, the movable contact part comprises a fixed rod, a fixed rod insulating washer, a contact bridge insulating washer, an over travel spring, a contact bridge, a snap ring and a washer. The bottom end of the fixed rod is in a step shape, the fixed rod is assembled with the fixed sheet hole and reinforced through plasma welding, and the insulating washer, the over travel spring, the contact bridge, the snap ring and the washer are sequentially assembled at the top end of the fixed rod.
Wherein the insulating washer ensures that the metal connected with the contact bridge, the stator and the like is physically and electrically insulated.
According to the contactor provided by the embodiment of the invention, the shell combination is integrally step-shaped, the appearance is square, mounting holes are designed on two sides, the overall shape is simple and practical, the raised cross-shaped partition plate on the top of the shell physically isolates each contact, an annular notch is reserved outside each contact to inject epoxy glue, the shell and an internal device are fixed, the creepage path distance outside each contact ceramic part is increased, and the dielectric voltage resistance of the contactor is further improved.
Furthermore, four mounting holes are reserved in the inner cavity of the bottom end of the shell, the bottom cover is assembled with the shell through self-tapping screws, and then the connecting part can be fixed through a glue dispensing mode.
According to the contactor provided by the embodiment of the invention, the contact system is fully sealed by laser welding, and hydrogen and trace helium are filled in the cavity.
Compared with the traditional single-combination contact, the novel high-voltage direct-current contactor with two groups of dynamic combination contacts increases the application range of the contactor, a single contactor can control two groups of loads simultaneously, one group of contacts can be used for load control, and one group of contacts can meet external interlocking time sequence control or contactor self-locking and interlocking. Its aim at reduces the final assembly electrical apparatus cost, can also satisfy simultaneously and integrate, miniaturized demand.
Claims (10)
1. High voltage direct current contactor with two sets of movablely close contact, including electromagnetic component and contact subassembly, its characterized in that: the electromagnetic assembly and the contact assembly are respectively arranged in the power cavity and the insulating cavity, and the power cavity and the insulating cavity are arranged in the shell (16) and are separated by the magnetic conduction plate (10);
the electromagnetic component drives the armature to move through electromagnetism, and the armature is connected with the contact component;
the contact assembly comprises a fixed piece (5), the fixed piece (5) is connected with the armature, and the movable contact assembly is arranged on the fixed piece (5);
and an elastic piece is arranged between the armature and the electromagnetic assembly to reset the armature.
2. High voltage direct current contactor with two sets of moving contacts according to claim 1, characterized in that: the electromagnetic component comprises a coil (11), a static iron core (15) and a yoke (23), wherein the yoke (23) is wrapped on the outer side of the coil (11), the static iron core (15) is installed in a hole in the center of the coil (11), a transmission rod (12) is movably installed in the center of the static iron core (15), two ends of the transmission rod (12) are respectively connected with the centers of an armature (14) and a fixing piece (5), and the top ends of the yoke (23) and the static iron core (15) are fixedly connected to a magnetic conduction plate (10).
3. High voltage direct current contactor with two sets of moving contacts according to claim 2, characterized in that: and the opposite surfaces of the armature iron (14) and the static iron core (15) are respectively processed with a cylindrical groove, and the two cylindrical grooves are connected through a restoring spring (19).
4. High voltage direct current contactor with two sets of moving contacts according to claim 2, characterized in that: an armature cover (13) is further installed in a hole in the center of the coil (11), the armature cover (13) separates the armature (14) and the static iron core (15) from the coil (11), and the upper end of the armature cover (13) is fixedly connected to the magnetic conduction plate (10).
5. High voltage direct current contactor with two sets of moving contacts according to claim 2, characterized in that: the coil (11) comprises a coil skeleton (1101), an enameled wire (1102) is wound in the middle of the coil skeleton (1101), two ends of the coil skeleton (1101) are fixedly connected with discs, and two coil pins (1103) are mounted on the discs at the lower ends of the coil skeleton (1101) and connected with two poles of the enameled wire (1102).
6. High voltage direct current contactor with two sets of moving contacts according to claim 1, characterized in that: the movable contact assembly comprises a fixed rod (4), a contact bridge insulating washer (6), a fixed piece insulating washer (7) and a contact bridge (9), wherein the fixed rod (4) is fixed on the fixed piece (5), and through holes are processed in the centers of the fixed piece insulating washer (7), the contact bridge insulating washer (6) and are respectively sleeved at the upper end and the lower end of the fixed rod (4); the ring arch is installed respectively to stationary blade insulating pad (7) and the one end that contact bridge insulating washer (6) kept away from mutually, and the lower extreme of contact bridge insulating washer (6) is installed in the through-hole at stationary blade insulating pad (7) center, the lower extreme of contact bridge insulating washer (6) still overlaps there is contact bridge (9), and overtravel spring (8) are installed to the upper end of stationary blade insulating pad (7), and overtravel spring (8) contact with the lower extreme of contact bridge (9).
7. High voltage direct current contactor with two sets of moving contacts according to claim 6, characterized in that: clamping grooves (402) and limiting steps (403) are respectively machined at the upper end and the lower end of the fixing rod (4), the limiting steps (403) are installed in the fixing plate (5), and magnetic steel (20) and clamping rings (21) are installed in the clamping grooves (402).
8. High voltage direct current contactor with two sets of moving contacts according to claim 6, characterized in that: two groups of moving contact assemblies are arranged at two ends of the fixed sheet (5).
9. High voltage direct current contactor with two sets of moving contacts according to claim 1, characterized in that: the insulating chamber passes through ceramic subassembly (3) and forms, including ceramic cover (301) and welding frame piece (303), install on ceramic cover (301) lower extreme opening welding frame piece (303), welding frame piece (303) cover on magnetic conduction plate (10) and its middle part movable mounting stationary blade (5), the top of ceramic cover (301) is fixed with four stationary contacts (302) and corresponds respectively with the both ends of two contact bridges (9), still installs two sets of magnet steel on the outer wall of ceramic subassembly (3), and magnet steel subassembly includes magnet steel (24), and two not homopolarity magnet steel (24) are fixed in the both sides of two adjacent stationary contacts (302) through magnet steel support (2), the inner wall top mid-mounting of ceramic cover (301) has ceramic partition (305), and criss-cross 30 keeps apart four stationary contacts (302).
10. High voltage direct current contactor with two sets of moving contacts according to claim 1, characterized in that: shell (16) lateral wall is square step thin-walled structure, step upper end installation contact subassembly, step lower extreme installation power subassembly, the edge mounting in step department of magnetic conduction board (10) and welding frame piece (303), processing has boss (1602) at the bottom of the shell on the lower extreme opening lateral wall four corners of shell (16), all processed boss hole (1603) on four boss (1602) at the bottom of the shell, bottom (18) are fixed and are sealed shell (16) bottom shell (16) through bolt and boss hole (1603), the bottom bisymmetry side of shell (16) still the rigid coupling has two shell bush (17), shell (16) inner wall top still the rigid coupling has crisscross shell baffle (1601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010922200.8A CN111916311A (en) | 2020-09-04 | 2020-09-04 | High-voltage direct-current contactor with two sets of dynamic contact points |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010922200.8A CN111916311A (en) | 2020-09-04 | 2020-09-04 | High-voltage direct-current contactor with two sets of dynamic contact points |
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| CN111916311A true CN111916311A (en) | 2020-11-10 |
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|---|---|---|---|
| CN202010922200.8A Pending CN111916311A (en) | 2020-09-04 | 2020-09-04 | High-voltage direct-current contactor with two sets of dynamic contact points |
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| CN (1) | CN111916311A (en) |
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| CN101677044A (en) * | 2008-09-19 | 2010-03-24 | 厦门金合捷投资控股有限公司 | High voltage DC vacuum relay with high reliability and long service life |
| CN107403707A (en) * | 2017-08-25 | 2017-11-28 | 戴丁志 | Steady magnetic-type contactor |
| CN206819944U (en) * | 2017-05-09 | 2017-12-29 | 三友联众集团股份有限公司 | A kind of D.C. contactor with auxiliary contact |
| CN207558709U (en) * | 2017-09-18 | 2018-06-29 | 浙江正泰电器股份有限公司 | The double-contact double-breakpoint structure of relay |
| CN207868135U (en) * | 2017-11-23 | 2018-09-14 | 浙江正泰电器股份有限公司 | Direct current electromagnetic relay |
| CN208027981U (en) * | 2017-12-28 | 2018-10-30 | 陕西群力电工有限责任公司 | Sealed high voltage direct current magnetic latching contactor |
| CN208970446U (en) * | 2018-09-17 | 2019-06-11 | 深圳市品川能源电气有限公司 | A kind of high voltage direct current relay of non-tight type |
| KR20200000312A (en) * | 2018-08-31 | 2020-01-02 | 엘에스산전 주식회사 | Direct Current Relay |
| CN111613485A (en) * | 2020-06-18 | 2020-09-01 | 贵州航天电器股份有限公司 | High voltage direct current contactor |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101677044A (en) * | 2008-09-19 | 2010-03-24 | 厦门金合捷投资控股有限公司 | High voltage DC vacuum relay with high reliability and long service life |
| CN206819944U (en) * | 2017-05-09 | 2017-12-29 | 三友联众集团股份有限公司 | A kind of D.C. contactor with auxiliary contact |
| CN107403707A (en) * | 2017-08-25 | 2017-11-28 | 戴丁志 | Steady magnetic-type contactor |
| CN207558709U (en) * | 2017-09-18 | 2018-06-29 | 浙江正泰电器股份有限公司 | The double-contact double-breakpoint structure of relay |
| CN207868135U (en) * | 2017-11-23 | 2018-09-14 | 浙江正泰电器股份有限公司 | Direct current electromagnetic relay |
| CN208027981U (en) * | 2017-12-28 | 2018-10-30 | 陕西群力电工有限责任公司 | Sealed high voltage direct current magnetic latching contactor |
| KR20200000312A (en) * | 2018-08-31 | 2020-01-02 | 엘에스산전 주식회사 | Direct Current Relay |
| CN208970446U (en) * | 2018-09-17 | 2019-06-11 | 深圳市品川能源电气有限公司 | A kind of high voltage direct current relay of non-tight type |
| CN111613485A (en) * | 2020-06-18 | 2020-09-01 | 贵州航天电器股份有限公司 | High voltage direct current contactor |
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Application publication date: 20201110 |
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