CN214012835U - Improved structure of arc extinguish chamber of contactor - Google Patents
Improved structure of arc extinguish chamber of contactor Download PDFInfo
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- CN214012835U CN214012835U CN202022157592.1U CN202022157592U CN214012835U CN 214012835 U CN214012835 U CN 214012835U CN 202022157592 U CN202022157592 U CN 202022157592U CN 214012835 U CN214012835 U CN 214012835U
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- gas production
- permanent magnet
- contactor
- arc
- mounting groove
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Abstract
Contactor explosion chamber improvement structure, its characterized in that: the gas production device comprises a gas production part body, wherein a plurality of grid piece mounting grooves are formed in the gas production part body and used for mounting arc extinguishing grid pieces, a magnetism increasing block mounting groove is formed in the bottom side of the gas production part body and used for mounting a magnetism increasing block, the magnetism increasing block mounting groove is located in a side face of the inner side of the gas production part body, a sealing structure is arranged on the side face of the inner side of the gas production part body and used for enabling the gas production part body and a static contact plate to form a closed environment, and a permanent magnet mounting groove is formed in the front side end of the gas production part body. Through to current gas production spare, the improvement of structural position between sealing member, the magnetization piece, permanent magnet and the bars piece to form effectual "shutoff" to electric arc, make it only to move towards the explosion chamber, prevent that electric arc from to the outside motion, and then promoted the arc extinguishing ability of original product greatly, can pass through electric life test and divide disconnected experiment and provide reliable guarantee for the product.
Description
Technical Field
The utility model belongs to the technical field of the contactor, it relates to contactor explosion chamber improvement structure specifically to say so.
Background
The contactor is characterized in that a magnetic field is generated by current flowing through a coil, so that a contact is closed, effective power transmission is realized, and a common contactor consists of an electromagnetic system (a movable iron core, a static iron core and an electromagnetic coil), a contact system and an arc extinguishing device; when the coil is powered off, the electromagnetic attraction disappears, the movable iron core is released under the action of the release spring, the contact is restored, and the contact is disconnected.
The direct current contactor used in photovoltaic and energy storage industries usually adopts the common alternating current contactor on the market at present, but the alternating current contactor has serious air leakage phenomenon in the breaking process, so that electric arcs cannot reliably move towards the direction of an arc extinguish chamber, and the electric arcs cannot be reliably extinguished.
Chinese patent ZL201320752864.X discloses an arc extinguish chamber for a low-voltage circuit breaker, which comprises a magnetism increasing block placing cavity and an arc extinguish grid sheet placing groove, wherein the magnetism increasing block placing cavity and the arc extinguish grid sheet placing groove are of an integrated structure. The magnetizing block can be directly inserted into the arc extinguish chamber, and the magnetizing block placing cavity in the arc extinguish chamber is provided with a characteristic matched with the characteristic of the magnetizing block for positioning the magnetizing block without adding other parts for positioning the magnetizing block; the arc extinguish chamber blocks the space around the arc extinguish chamber to the maximum extent, and the air pressure around the arc extinguish chamber is rapidly increased at the beginning of the repulsion of the moving contact from the arc, so that the moving contact is repelled more rapidly; the arc extinguish chamber shell made of the insulating gas production material can produce gaseous compounds which have favorable effect on arc extinguishing when electric arcs appear, effectively improves the air pressure in the arc extinguish chamber, and enhances the gas blowing effect of the arc extinguish chamber. However, in the technical scheme, the electric arc still leaks from the gap between the magnetism increasing block placing cavity and the arc extinguishing grid sheet placing groove, so that the electric arc is not completely extinguished, and the breaking capacity of the contactor is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an exchange type contactor electric arc that uses to above-mentioned current photovoltaic and energy storage trade spills over from product fit clearance easily, the technical defect who leads to electric arc can't extinguish completely, a contactor explosion chamber improvement structure is provided, through producing the gas spare to current, the sealing member, the magnetic gain piece, the improvement of structural position between permanent magnet and the grid piece, thereby form effectual "shutoff" to electric arc, it only can remove towards the explosion chamber to make it, prevent electric arc to move to the outside, and then promoted the arc extinguishing ability of original product greatly, can pass through the electric life test and divide the branch to divide the experiment to provide reliable guarantee for the product. Meanwhile, under a closed environment, the air flow flows from high temperature to low temperature, the moving speed of the electric arc is accelerated, and the arcing time is shortened.
Technical scheme
In order to realize the technical purpose, the utility model provides a contactor explosion chamber improvement structure, its characterized in that: the gas production device comprises a gas production part body, wherein a plurality of grid piece mounting grooves are formed in the gas production part body and used for mounting arc extinguishing grid pieces, a magnetism increasing block mounting groove is formed in the bottom side of the gas production part body and used for mounting a magnetism increasing block, the magnetism increasing block mounting groove is located in a side face of the inner side of the gas production part body, a sealing structure is arranged on the side face of the inner side of the gas production part body and used for enabling the gas production part body and a static contact plate to form a closed environment, and a permanent magnet mounting groove is formed in the front side end of the gas production part body.
Furthermore, a permanent magnet plastic mounting piece is arranged in the permanent magnet mounting groove, and the permanent magnet is mounted in the permanent magnet plastic mounting piece.
Furthermore, the magnetism increasing block mounting groove is a strip-shaped groove with a downward opening.
Further, the sealing structure gradually folds towards the inner side of the gas generating piece body from the front side end to the rear side end of the gas generating piece body.
Further, the notch of the permanent magnet mounting groove faces downwards.
Furthermore, the permanent magnets are positioned on two sides of the joint or separation contact end of the moving contact and the fixed contact.
Preferably, the permanent magnet mounting groove is a square groove.
Advantageous effects
The utility model provides a pair of contactor explosion chamber improvement structure, through to current gas production spare, the improvement of structural position between sealing member, magnetic increasing piece, permanent magnet and the grid piece to form effectual "shutoff" to electric arc, make it only can remove towards the explosion chamber, prevent electric arc to the external motion, and then promoted the arc extinguishing ability of original product greatly, can pass through the electric life test and divide the disconnected experiment to provide reliable guarantee for the product. Meanwhile, under a closed environment, the air flow flows from high temperature to low temperature, the moving speed of the electric arc is accelerated, and the arcing time is shortened.
Drawings
Fig. 1 is a schematic structural diagram of a working state of a contactor according to an embodiment of the present invention.
Fig. 2 is a schematic view of an installation state of the arc extinguish chamber in the embodiment of the present invention.
Fig. 3 is a schematic view of the installation structure of the magnetism increasing block in the embodiment of the present invention.
Fig. 4 is an installation schematic diagram of permanent magnet plastic installation spare in the embodiment of the utility model.
Fig. 5 is an exploded view of the permanent magnet according to the embodiment of the present invention.
Fig. 6 is a schematic diagram of the position structure of the permanent magnet and the magnetism increasing block in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Examples
The embodiment of the utility model provides a contactor explosion chamber improvement structure, as shown in figures 4 and 5, it is including producing gas spare body 1, it is used for installing arc extinguishing bars piece 2 to be equipped with a plurality of bars piece mounting grooves 101 on producing gas spare body 1, the bottom side of producing gas spare body 1 is provided with magnetism increasing block mounting groove 102 and is used for installing magnetism increasing block 3, in this embodiment, preferredly magnetism increasing block mounting groove 102 is the opening strip groove down, magnetism increasing block mounting groove 102 is located be equipped with seal structure 103 on the side of producing gas spare body 1 inboard and be used for producing gas spare body 1 and static touch panel 4 and form airtight environment for do not have the clearance that is unfavorable for the electric arc motion between sound contact and bars piece and the magnetism increasing block.
In this embodiment, it is preferable that the sealing structure 103 gradually converges toward the inner side of the gas generating body 1 from the front side end to the rear side end of the gas generating body 1. The front side end of the gas generating piece body 1 is provided with a permanent magnet mounting groove 104. Specifically, in this embodiment, the permanent magnet installation groove 104 has a downward notch, the permanent magnet installation groove 104 is a square groove, a permanent magnet plastic mounting piece 105 is installed in the permanent magnet installation groove 104, and the permanent magnet 7 is installed in the permanent magnet plastic mounting piece 105. When the main loop is electrified, the movable contact 5 and the fixed contact 6 are opened, electric arcs are respectively generated between the movable contact 5 and the fixed contact 6, the electric arcs are cut by the arc extinguishing grid piece 2 after entering the arc extinguishing chamber, the electric arcs are extinguished under the maximum arc voltage, the protection of a circuit is completed, meanwhile, the electric arcs generate internal air pressure to be increased when the electric arcs move in a closed environment with the front width (the side close to the movable contact is the front side) and the back width being narrow, the electric arcs can move towards the arc extinguishing chamber, and the arc extinguishing capacity is improved.
As shown in the attached drawings 1 and 2, the improved structure of the arc extinguish chamber is symmetrically arranged on two sides of a contact end where a moving contact 5 and a fixed contact 6 of the contactor are combined or separated, in order to enable electric arcs of the contactor to well enter the arc extinguish chamber when the contactor works at a low current, a permanent magnet and magnetism increasing block mounting structure of the contactor is further designed, the improved structure comprises the moving contact 5 and the fixed contact 6, the combination and separation of the moving contact 5 and the fixed contact 6 realize the on-off of the contactor, at least one pair of permanent magnets 7 and 7 'is positioned on two sides of the contact end where the moving contact 5 and the fixed contact 6 are combined or separated, and the planes of the at least one pair of permanent magnets 7 and 7' are intersected in the direction far away from the arc extinguish chamber. The plane of the at least one pair of permanent magnets 7, 7' is gradually folded in a splayed shape in the direction away from the arc extinguish chamber. The N poles of the at least one pair of permanent magnets 7, 7' face to one side of the contact ends of the moving contact and the static contact. Meanwhile, as shown in fig. 6, the at least one pair of permanent magnets 7, 7' are respectively provided with a magnetizing block 3 at one side of the arc extinguish chamber. As shown in fig. 3, the magnetic increasing block 3 includes a bottom surface 301 and two side surfaces 302,302 ', and the two side surfaces 302, 302' gradually converge from a side close to the at least one pair of permanent magnets 7,7 'to a side away from the at least one pair of permanent magnets 7, 7' to form a splayed arrangement. Electric arc can receive the permanent magnet and increases the magnetic blow power of magnetic block combined action when undercurrent and heavy current in this structure that improves contactor explosion chamber arc extinguishing effect, and electric arc can better get into the explosion chamber, lasts the arcing emergence when can avoiding undercurrent, has prolonged electric life.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The structure, proportion, size, quantity, etc. shown in the attached drawings of the embodiment of the present invention are only used for matching with the contents disclosed in the specification, so as to be known and read by people familiar with the art, not for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and the modification of any structure, the change of proportion relation or the adjustment of size should still fall within the range that the technical contents can be covered without affecting the function that the present invention can produce and the purpose that can be achieved. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", "clockwise", "counterclockwise", etc. used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered to be the scope of the present invention without substantial changes in the technical content.
Claims (7)
1. Contactor explosion chamber improvement structure, its characterized in that: it is including producing gas a body (1), be equipped with a plurality of bars piece mounting grooves (101) on producing gas a body (1) and be used for installing arc extinguishing bars piece (2), the bottom side of producing gas a body (1) is provided with and increases magnetic block mounting groove (102) and is used for installing magnetism increasing piece (3), magnetism increasing piece mounting groove (102) are located produce gas a body (1) inboard side on be equipped with seal structure (103) and be used for producing gas a body (1) and stationary contact plate (4) formation airtight environment, produce the preceding side of gas a body (1) and be provided with permanent magnet mounting groove (104).
2. The contactor arc-extinguishing chamber improvement structure of claim 1, characterized in that: permanent magnet plastic mounting pieces (105) are arranged in the permanent magnet mounting grooves (104), and permanent magnets (7) are mounted in the permanent magnet plastic mounting pieces (105).
3. The contactor arc-extinguishing chamber improvement structure of claim 1, characterized in that: the magnetism increasing block mounting groove (102) is a strip-shaped groove with a downward opening.
4. The contactor arc-extinguishing chamber improvement structure of claim 1, characterized in that: the sealing structure (103) is gradually folded towards the inner side of the gas generating piece body (1) from the front side end to the rear side end of the gas generating piece body (1).
5. The contactor arc-extinguishing chamber improvement structure of claim 1, characterized in that: the notch of the permanent magnet mounting groove (104) faces downwards.
6. The contactor arc-extinguishing chamber improvement structure of claim 1, characterized in that: the permanent magnets (7) are positioned on two sides of the combined or separated contact end of the moving contact (5) and the static contact (6).
7. The contactor arc-extinguishing chamber improvement structure of claim 1, characterized in that: the permanent magnet mounting groove (104) is a square groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022157592.1U CN214012835U (en) | 2020-09-27 | 2020-09-27 | Improved structure of arc extinguish chamber of contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022157592.1U CN214012835U (en) | 2020-09-27 | 2020-09-27 | Improved structure of arc extinguish chamber of contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214012835U true CN214012835U (en) | 2021-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022157592.1U Active CN214012835U (en) | 2020-09-27 | 2020-09-27 | Improved structure of arc extinguish chamber of contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214012835U (en) |
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2020
- 2020-09-27 CN CN202022157592.1U patent/CN214012835U/en active Active
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