CN213781937U - High-voltage direct-current contactor - Google Patents
High-voltage direct-current contactor Download PDFInfo
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- CN213781937U CN213781937U CN202022168812.0U CN202022168812U CN213781937U CN 213781937 U CN213781937 U CN 213781937U CN 202022168812 U CN202022168812 U CN 202022168812U CN 213781937 U CN213781937 U CN 213781937U
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- extinguishing
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- extinguishing grid
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Abstract
The utility model relates to the technical field of contactors, in particular to a high-voltage direct-current contactor, which comprises a ceramic cover, a yoke iron plate, a bracket, a moving point plate, a moving spring assembly, a first static contact and a second static contact; an arc extinguishing chamber is formed between the ceramic cover and the yoke plate; a first arc-extinguishing plate and a second arc-extinguishing plate are arranged in the arc-extinguishing chamber; the first arc-extinguishing plate is provided with a first arc-extinguishing grid and a second arc-extinguishing grid; the second arc-extinguishing plate is provided with a third arc-extinguishing grid and a fourth arc-extinguishing grid; a first accommodating groove extends from the first arc-extinguishing plate; a second accommodating groove extends from the second arc-extinguishing plate; a first magnet is arranged in the first accommodating groove; and a second magnet is arranged in the second accommodating groove. The utility model discloses can improve the product area and carry cutting off ability to the load installation polarity to first static contact and second static contact does not have the requirement, reaches real external load nonpolarity's purpose, the actual problem in the fine solution product application.
Description
Technical Field
The utility model relates to a contactor technical field, concretely relates to high voltage direct current contactor.
Background
A contactor is an electronic control device having a control system (also known as an input loop) and a controlled system (also known as an output loop), typically used in automatic control circuits, which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.
The direct current contactor is one of contactors, and most of the existing direct current contactors adopt a movable spring direct-acting type (also called a solenoid direct-acting type) scheme, and the principle is that the direct current contactor is driven by a coil, electromagnetic force is generated through a magnetic circuit with a certain shape surrounding the periphery, and initial kinetic energy is provided for attraction of product contacts.
The contactor can generate electric arcs in the processes of attraction and breaking, the higher the connected load voltage is, the harder the electric arcs are to break, so that contacts can not be completely separated in time, and the electric arc breaking capacity of the contactor is an important standard for measuring the performance of the contactor.
In the prior art, magnetic quenching is carried out by the principle that a magnetic field generated by a magnet and current of a contact part generate magnetic electric force, and the magnetic quenching has directionality, so that strict requirements are imposed on a positive electrode and a negative electrode connected to a load end of a contactor, and the magnetic quenching is not ideal from the practical point of view.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned among the prior art not enough, provide a high voltage direct current contactor.
The purpose of the utility model is realized through the following technical scheme: a high-voltage direct-current contactor comprises a ceramic cover, a yoke iron plate, a bracket, a moving point plate, a moving spring assembly, a first fixed contact and a second fixed contact; an arc extinguishing chamber is formed between the ceramic cover and the yoke plate; one end of the first static contact and one end of the second static contact extend into and are fixed in the arc extinguishing chamber; the bracket is arranged at the bottom of the yoke iron plate; the movable spring assembly comprises a push rod and a magnetic circuit assembly; the magnetic circuit component is used for driving the push rod to move so that the moving point plate is respectively contacted with the first fixed contact and the second fixed contact; the magnetic circuit assembly is arranged on the bracket;
a first arc-extinguishing plate and a second arc-extinguishing plate are arranged in the arc-extinguishing chamber; a first arc-extinguishing grid and a second arc-extinguishing grid are respectively arranged on two sides of the first arc-extinguishing plate; the first fixed contact is arranged between the first arc-extinguishing grid and the second arc-extinguishing grid; a third arc-extinguishing grid and a fourth arc-extinguishing grid are respectively arranged on two sides of the second arc-extinguishing plate; the second fixed contact is arranged between the third arc-extinguishing grid and the fourth arc-extinguishing grid; a first accommodating groove extends inwards from the bottom of the first arc-extinguishing plate; a second accommodating groove extends inwards from the bottom of the second arc-extinguishing plate; a first magnet is arranged in the first accommodating groove; and a second magnet is arranged in the second accommodating groove.
The utility model is further arranged that the first arc-extinguishing grid, the second arc-extinguishing grid, the third arc-extinguishing grid and the fourth arc-extinguishing grid are all provided with a plurality of bulges; the straight line where the first fixed contact and the second fixed contact are located is parallel to the transverse extending direction of the protrusion.
The utility model discloses further set up to, line between first magnet and the second magnet is out of plumb with the line of first static contact center and second static contact center.
The utility model is further arranged that the first arc-extinguishing grid and the second arc-extinguishing grid are arranged at two sides of the connecting line of the center of the first static contact and the center of the second static contact;
and the third arc-extinguishing grid and the fourth arc-extinguishing grid are arranged on two sides of a connecting line of the center of the first static contact and the center of the second static contact.
The utility model is further arranged that arc-shaped connecting plates are arranged between the first arc-extinguishing grid and the second arc-extinguishing grid and between the third arc-extinguishing grid and the fourth arc-extinguishing grid; the first accommodating groove and the second accommodating groove are respectively arranged on the arc-shaped connecting plate;
the first arc-extinguishing grid, the second arc-extinguishing grid, the third arc-extinguishing grid, the fourth arc-extinguishing grid, the arc-shaped connecting plate, the first accommodating groove and the second accommodating groove are made of nonmetal insulating materials.
The utility model is further arranged in that the magnetic circuit component comprises a framework, a magnetic conduction shaft sleeve, a movable iron core and a coil which are all arranged on the bracket; the coil is wound outside the framework; the magnetic conduction shaft is sleeved in the framework; the movable iron core is arranged in the magnetic conduction shaft sleeve; one end of the push rod is connected with the movable iron core; the other end of the push rod is connected with the moving point plate.
The utility model is further arranged that a counter-force spring is arranged between the movable iron core and the push rod; the push rod is sleeved in the counter-force spring.
The utility model is further arranged that an overtravel spring is arranged between the moving point plate and the bottom of the ceramic cover; the push rod is sleeved in the overtravel spring.
The utility model discloses further set up to, the catch bar with move between the iron core and the catch bar with move and all be equipped with the jump ring between the point board.
The utility model has the advantages that: the utility model discloses can improve the product area and carry cutting off ability to the load installation polarity to first static contact and second static contact does not have the requirement, reaches real external load nonpolarity's purpose, the actual problem in the fine solution product application.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is a cross-sectional view of the present invention;
figure 2 is a schematic structural view of a first arc plate of the present invention;
figure 3 is a cross-sectional view of a first arc plate of the present invention;
wherein: 1. a ceramic cover; 11. an arc-extinguishing chamber; 2. a yoke iron plate; 3. a support; 41. a first fixed contact; 42. a second fixed contact; 43. a moving point plate; 5. a push rod; 61. a first arc plate; 62. a second arc plate; 63. a first arc chute; 64. a second arc chute; 65. a protrusion; 66. a first accommodating groove; 67. a second accommodating groove; 68. an arc-shaped connecting plate; 71. a first magnet; 72. a second magnet; 81. a framework; 82. a movable iron core; 83. a magnetic conductive shaft sleeve; 84. a coil; 91. a counter-force spring; 92. an over travel spring; 93. and a clamp spring.
Detailed Description
The invention will be further described with reference to the following examples.
As can be seen from fig. 1 to 3; the high-voltage direct-current contactor according to the embodiment comprises a ceramic cover 1, a yoke plate 2, a bracket 3, a moving point plate 43, a moving spring assembly, a first fixed contact 41 and a second fixed contact 42; an arc extinguishing chamber 11 is formed between the ceramic cover 1 and the yoke plate 2; one end of the first fixed contact 41 and one end of the second fixed contact 42 both extend into and are fixed in the arc extinguishing chamber 11; the bracket 3 is arranged at the bottom of the yoke iron plate 2; the movable spring assembly comprises a push rod 5 and a magnetic circuit assembly; the magnetic circuit component is used for driving the push rod 5 to move so that the moving point plate 43 is respectively contacted with the first fixed contact 41 and the second fixed contact 42; the magnetic circuit assembly is arranged on the bracket 3;
a first arc-extinguishing plate 61 and a second arc-extinguishing plate 62 are arranged in the arc-extinguishing chamber 11; a first arc-extinguishing grid 63 and a second arc-extinguishing grid 64 are respectively arranged on two sides of the first arc-extinguishing plate 61; the first fixed contact 41 is arranged between the first arc-extinguishing grid 63 and the second arc-extinguishing grid 64; a third arc chute and a fourth arc chute are respectively arranged on two sides of the second arc-extinguishing plate 62; the second fixed contact 42 is arranged between the third arc chute and the fourth arc chute; a first accommodating groove 66 extends inwards from the bottom of the first arc-extinguishing plate 61; a second accommodating groove extends inwards from the bottom of the second arc-extinguishing plate 62; a first magnet 71 is arranged in the first accommodating groove 66; a second magnet 72 is disposed in the second receiving groove.
Specifically, in the high-voltage direct-current contactor according to this embodiment, the first magnet 71 and the second magnet 72 are disposed in the first arc plate 61 and the second arc plate 62, and the direction of the magnetic field between the first magnet 71 and the second magnet 72 is substantially the same as the direction of the connecting line between the first fixed contact 41 and the second fixed contact 42, so that the arc when the first fixed contact 41 and the second fixed contact 42 are disconnected from the moving-point plate 43 is perpendicular to the direction of the magnetic field between the first magnet 71 and the second magnet 72, and the force of the arc applied to the magnetic field can be obtained according to the left-hand rule to move to the arc chutes on the two sides of the connecting line between the centers of the first fixed contact 41 and the second fixed contact 42, that is, the arc generated by the first fixed contact 41 moves to the first arc chute 63 and the second arc chute 64, the arc generated by the second fixed contact 42 moves to the third arc chute and the fourth chute, and the arc chutes have a fast arc chute function, therefore, the load cutoff capability of the product can be improved, no requirement is made on the load installation polarity of the first fixed contact 41 and the second arc-extinguishing grid 64, the purpose of true external load nonpolarity is achieved, and the practical problem in the product application process is well solved; in addition, in the embodiment, the first magnet 71 and the second magnet 72 are respectively disposed in the first receiving groove 66 of the first arc-extinguishing plate 61 and the second receiving groove of the second arc-extinguishing plate 62, only the structures of the first arc-extinguishing plate 61 and the second arc-extinguishing plate 62 need to be changed, so that the operation is convenient, and the arc-extinguishing effect is better because the distance between the first magnet 71 and the second magnet 72 is longer.
In the high-voltage direct-current contactor according to this embodiment, the first arc chute 63, the second arc chute 64, the third arc chute, and the fourth arc chute are provided with a plurality of protrusions 65; the straight line where the first fixed contact 41 and the second fixed contact 42 are located is parallel to the transverse extending direction of the protrusion 65. In the high-voltage direct-current contactor according to this embodiment, a connection line between the first magnet 71 and the second magnet 72 is not perpendicular to a connection line between a center of the first stationary contact 41 and a center of the second stationary contact 42. Specifically, through the above arrangement, the magnetic field direction of the magnet is substantially the same as the connecting line of the fixed contact, the electric arc generated when the first fixed contact 41 and the second fixed contact 42 are disconnected from the moving contact plate 43 can be perpendicular to the magnetic field direction between the first magnet 71 and the second magnet 72, and the electric arc can directly move to the arc chutes on the front side and the rear side of the first fixed contact 41 and the front side and the rear side of the second fixed contact 42 under the force of the magnetic field.
In the high-voltage direct-current contactor according to this embodiment, the first arc chute (63) and the second arc chute 64 are disposed on two sides of a connection line between the center of the first stationary contact 41 and the center of the second stationary contact 42;
the third arc chute and the fourth arc chute are arranged at two sides of a connecting line between the center of the first fixed contact 41 and the center of the second fixed contact 42. The structure of the contactor is more reasonable due to the arrangement.
In the high-voltage direct-current contactor according to this embodiment, arc-shaped connecting plates 68 are respectively disposed between the first arc chute 63 and the second arc chute 64, and between the third arc chute and the fourth arc chute; the first receiving groove 66 and the second receiving groove are respectively disposed on the arc-shaped connecting plate 68.
The first arc-extinguishing grid 63, the second arc-extinguishing grid 64, the third arc-extinguishing grid, the fourth arc-extinguishing grid, the arc-shaped connecting plate 68, the first accommodating groove 66 and the second accommodating groove are all made of nonmetal insulating materials. The structures of the first arc-extinguishing plates 61 and the second arc-extinguishing plates 62 are more reasonable and stable by arranging the arc-shaped connecting plates.
In the high-voltage direct-current contactor according to this embodiment, the magnetic circuit assembly includes a framework 81, a magnetic conductive shaft sleeve 83, a movable iron core 82 and a coil 84, which are all disposed on the support 3; the coil 84 is wound outside the framework 81; the magnetic conduction shaft sleeve 83 is arranged in the framework 81; the movable iron core 82 is arranged in a magnetic conduction shaft sleeve 83; one end of the push rod 5 is connected with the movable iron core 82; the other end of the push rod 5 is connected with a moving point plate 43.
Specifically, in the high-voltage direct-current contactor according to this embodiment, an arc extinguishing chamber 11 is formed between the ceramic cover 1 and the yoke plate 2, the first stationary contact 41 and the second stationary contact 42 are fixed at the top of the arc extinguishing chamber 11, the moving point plate 43 moves in the arc extinguishing chamber 11, the push rod 5 penetrates into the arc extinguishing chamber 11 from the bottom of the yoke plate 2 and then is connected to the moving point plate 43, when the coil 84 is energized, the electromagnetic force generated by the magnetic circuit component moves the moving iron core 82 in the direction in which the magnetic circuit is closed, so that the moving iron core 82 drives the push rod 5 to move upward, and the moving point plate 43 is respectively in contact with the first stationary contact 41 and the second stationary contact 42.
In the high-voltage direct-current contactor according to this embodiment, a reaction spring 91 is disposed between the movable iron core 82 and the push rod 5; the push rod 5 is sleeved in the counter force spring 91. In the high-voltage direct-current contactor according to the embodiment, an over-travel spring 92 is arranged between the moving point plate 43 and the bottom of the ceramic cover 1; the push rod 5 is sleeved in the overtravel spring 92. The movable iron core 82 is convenient to reset through the arrangement.
In the high-voltage direct-current contactor of this embodiment, clamp springs 93 are respectively disposed between the push rod 5 and the movable iron core 82 and between the push rod 5 and the movable point plate 43. The arrangement is convenient for the push rod 5 to be fixed with the movable iron core 82 and the movable point plate 43 respectively.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A high voltage direct current contactor, its characterized in that: the device comprises a ceramic cover (1), a yoke plate (2), a bracket (3), a moving point plate (43), a moving spring assembly, a first fixed contact (41) and a second fixed contact (42); an arc extinguishing chamber (11) is formed between the ceramic cover (1) and the yoke plate (2); one end of the first static contact (41) and one end of the second static contact (42) both extend into and are fixed in the arc extinguishing chamber (11); the bracket (3) is arranged at the bottom of the yoke iron plate (2); the movable spring assembly comprises a push rod (5) and a magnetic circuit assembly; the magnetic circuit component is used for driving the push rod (5) to move so that the moving point plate (43) is respectively contacted with the first fixed contact (41) and the second fixed contact (42); the magnetic circuit component is arranged on the bracket (3);
a first arc-extinguishing plate (61) and a second arc-extinguishing plate (62) are arranged in the arc-extinguishing chamber (11); a first arc-extinguishing grid (63) and a second arc-extinguishing grid (64) are respectively arranged on two sides of the first arc-extinguishing plate (61); the first fixed contact (41) is arranged between the first arc-extinguishing grid (63) and the second arc-extinguishing grid (64); a third arc-extinguishing grid and a fourth arc-extinguishing grid are respectively arranged on two sides of the second arc-extinguishing plate (62); the second fixed contact (42) is arranged between the third arc-extinguishing grid and the fourth arc-extinguishing grid; a first accommodating groove (66) extends inwards from the bottom of the first arc-extinguishing plate (61); a second accommodating groove extends inwards from the bottom of the second arc-extinguishing plate (62); a first magnet (71) is arranged in the first accommodating groove (66); and a second magnet (72) is arranged in the second accommodating groove.
2. The high voltage direct current contactor according to claim 1, wherein: the first arc-extinguishing grid (63), the second arc-extinguishing grid (64), the third arc-extinguishing grid and the fourth arc-extinguishing grid are provided with a plurality of bulges (65); the straight line of the first fixed contact (41) and the second fixed contact (42) is parallel to the transverse extending direction of the bulge (65).
3. The high voltage direct current contactor according to claim 1, wherein: and the connecting line between the first magnet (71) and the second magnet (72) is not perpendicular to the connecting line between the center of the first fixed contact (41) and the center of the second fixed contact (42).
4. The high voltage direct current contactor according to claim 1, wherein: the first arc-extinguishing grid (63) and the second arc-extinguishing grid (64) are arranged on two sides of a connecting line between the center of the first fixed contact (41) and the center of the second fixed contact (42);
the third arc-extinguishing grid and the fourth arc-extinguishing grid are arranged on two sides of a connecting line of the center of the first fixed contact (41) and the center of the second fixed contact (42).
5. The high voltage direct current contactor according to claim 1, wherein: arc-shaped connecting plates (68) are arranged between the first arc-extinguishing grid (63) and the second arc-extinguishing grid (64) and between the third arc-extinguishing grid and the fourth arc-extinguishing grid; the first accommodating groove (66) and the second accommodating groove are respectively arranged on the arc-shaped connecting plate (68);
the first arc-extinguishing grid (63), the second arc-extinguishing grid (64), the third arc-extinguishing grid, the fourth arc-extinguishing grid, the arc-shaped connecting plate (68), the first accommodating groove (66) and the second accommodating groove are made of nonmetal insulating materials.
6. The high voltage direct current contactor according to claim 1, wherein: the magnetic circuit component comprises a framework (81), a magnetic conduction shaft sleeve (83), a movable iron core (82) and a coil (84) which are all arranged on the bracket (3); the coil (84) is wound outside the framework (81); the magnetic conduction shaft sleeve (83) is arranged in the framework (81); the movable iron core (82) is arranged in the magnetic conduction shaft sleeve (83); one end of the push rod (5) is connected with the movable iron core (82); the other end of the push rod (5) is connected with the moving point plate (43).
7. The high voltage direct current contactor according to claim 6, wherein: a reaction spring (91) is arranged between the movable iron core (82) and the push rod (5); the push rod (5) is sleeved in the counterforce spring (91).
8. The high voltage direct current contactor according to claim 1, wherein: an overtravel spring (92) is arranged between the moving point plate (43) and the bottom of the ceramic cover (1); the push rod (5) is sleeved in the overtravel spring (92).
9. The high voltage direct current contactor according to claim 8, wherein: and clamp springs (93) are arranged between the push rod (5) and the movable iron core (82) and between the push rod (5) and the movable point plate (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022168812.0U CN213781937U (en) | 2020-09-28 | 2020-09-28 | High-voltage direct-current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022168812.0U CN213781937U (en) | 2020-09-28 | 2020-09-28 | High-voltage direct-current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213781937U true CN213781937U (en) | 2021-07-23 |
Family
ID=76906930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022168812.0U Active CN213781937U (en) | 2020-09-28 | 2020-09-28 | High-voltage direct-current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213781937U (en) |
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2020
- 2020-09-28 CN CN202022168812.0U patent/CN213781937U/en active Active
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