CN219873236U - Explosion chamber containing permanent magnet and contact explosion system thereof - Google Patents
Explosion chamber containing permanent magnet and contact explosion system thereof Download PDFInfo
- Publication number
- CN219873236U CN219873236U CN202321319530.3U CN202321319530U CN219873236U CN 219873236 U CN219873236 U CN 219873236U CN 202321319530 U CN202321319530 U CN 202321319530U CN 219873236 U CN219873236 U CN 219873236U
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- arc extinguishing
- extinguishing chamber
- contact
- permanent magnet
- arc
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- 238000004880 explosion Methods 0.000 title abstract description 9
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 abstract description 5
- 239000004020 conductor Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
An arc extinguish chamber containing a permanent magnet and a contact arc extinguishing system thereof belong to the technical field of switch equipment. The explosion chamber includes permanent magnet and two "L" shape magnetic conduction spare, and the inside magnetic field direction of permanent magnet is along the length direction of permanent magnet, and characteristics are: the two L-shaped magnetic conducting pieces are respectively positioned at two sides of the length direction of the permanent magnet, so that a semi-closed arc extinguishing chamber is respectively formed at two sides of the permanent magnet, and an insulating structure is arranged on the inner wall of the arc extinguishing chamber. The contact arc extinguishing system comprises a contact system and the arc extinguishing chamber; the contact system comprises a moving contact and a fixed contact, and the moving contact is contacted with or separated from the fixed contact after acting. The advantages are that: the inside of the arc extinguishing chamber is provided with a stronger magnetic field, so that the pulling force on the electric arc is increased; space is fully utilized on the same size of the arc extinguishing chamber, the length of the permanent magnet can be maximized, and better magnetic field force is obtained; effectively improve the arc extinguishing capability and ensure the safety of equipment.
Description
Technical Field
The utility model belongs to the technical field of switching equipment, and particularly relates to an arc-extinguishing chamber containing a permanent magnet, and also relates to a contact arc-extinguishing system of the arc-extinguishing chamber containing the permanent magnet.
Background
The switch is an important electrical device, and can cut off the current carried by the switch, so as to cut off the current on the switch, thereby realizing the function of circuit disconnection. The switch generally comprises a contact system, wherein the contact system comprises a moving contact and a fixed contact, the moving contact is contacted with or separated from the fixed contact after acting, and then the switch is switched on or switched off. The switch further comprises an arc extinguishing chamber for extinguishing an arc generated when the movable contact is separated from the fixed contact, and the circuit is opened only when the arc is extinguished. Therefore, the arc extinguishing chamber is undoubtedly an important component of the switch.
With the development of new energy, for a switch, more and more direct current working environments need to be dealt with, because the current is zero-free, the electric arc is more difficult to extinguish, the failure of a switch breaking circuit is caused, and if the electric arc is not extinguished rapidly, safety accidents can be caused, which is a core problem for people who are ordinary in the art.
Disclosure of Invention
The primary task of the present utility model is to provide an arc extinguishing chamber containing permanent magnets, which improves arc extinguishing capability and maximizes the size of the permanent magnets by inserting the permanent magnets into the arc extinguishing chamber and disposing two L-shaped magnetizers on both sides of the permanent magnets.
Another task of the present utility model is to provide a contact arc extinguishing system of an arc extinguishing chamber containing a permanent magnet, which can ensure the comprehensive manifestation of the technical effects of the arc extinguishing chamber.
In order to complete the primary task, the technical scheme provided by the utility model is as follows: the utility model provides an explosion chamber that contains permanent magnet, explosion chamber includes permanent magnet and two "L" shape magnetic conduction spare, the inside magnetic field direction of permanent magnet is along the length direction of permanent magnet, two "L" shape magnetic conduction spare are located respectively the both sides of permanent magnet length direction to form a semi-closed explosion chamber respectively in permanent magnet both sides, be provided with insulation system on the inner wall of explosion chamber.
In a specific embodiment of the utility model, the arc chute further comprises a housing, the housing forming the insulating structure, the housing comprising a protrusion extending from the top of the arc chute towards the interior of the arc chute, the permanent magnet being embedded in the protrusion from the back of the protrusion.
In another specific embodiment of the present utility model, an opening is formed on one side of the arc extinguishing chamber, and the magnetic conductive member includes a first member and a second member, wherein the first member is located on a side far from the opening, and the second member is located on the left and right sides of the arc extinguishing chamber.
In yet another specific embodiment of the present utility model, one side of the arc extinguishing chamber has an opening, the housing has side portions on both sides of the protrusion, the protrusion includes a protrusion top surface and a pair of protrusion side surfaces, the protrusion side surfaces are located on both sides of the protrusion top surface, one end of the protrusion side surface is engaged with one end of the protrusion top surface, and the other end is engaged with the side portions.
In a further specific embodiment of the utility model, the side portion comprises a side wall, a tail wall and an end wall, the side wall forming the side of the arc extinguishing chamber, the end wall being located on both sides of the opening, the tail wall being located on the side of the arc extinguishing chamber remote from the opening, the tail wall having one end engaging the side wall and the other end engaging the protruding side.
In order to accomplish another task, the technical scheme provided by the utility model is as follows: a contact arc extinguishing system comprises a contact system and an arc extinguishing chamber; the contact system comprises a moving contact and a fixed contact, and the moving contact is contacted with or separated from the fixed contact after acting.
In a further specific embodiment of the present utility model, a moving contact is disposed at a contact position of the moving contact and the fixed contact, and correspondingly, a fixed contact is disposed at a contact position of the fixed contact; the arc extinguishing chamber is arranged on the moving contact action path of the moving contact.
The utility model has the beneficial effects that due to the adoption of the structure, the utility model has the following advantages: firstly, through the cooperation of the permanent magnet and the two L-shaped magnetic conducting pieces, a stronger magnetic field is arranged in the arc extinguishing chamber, and the pulling force on the electric arc is increased; secondly, because the permanent magnet is inserted into the arc extinguishing chamber along the length direction, the rear end of the permanent magnet is arranged between the two L-shaped magnetic conducting pieces, and the front end of the permanent magnet is inserted into the arc extinguishing chamber, the space is fully utilized on the same size of the arc extinguishing chamber, the length of the permanent magnet can be maximized, and better magnetic field force can be obtained; and thirdly, an arc extinguishing chamber of the arc extinguishing chamber is arranged on a path of the moving contact action of the moving contact, so that the structure can accelerate the extinction of an arc, effectively improve the arc extinguishing capability and ensure the safety of equipment.
Drawings
Fig. 1 is a schematic view of a contact system and arc chute according to the present utility model;
fig. 2 is a schematic diagram of an arc chute according to the present utility model;
FIG. 3 is a schematic view of a housing according to the present utility model;
fig. 4 is a schematic diagram of an arc drawn in an arc chute according to the present utility model;
fig. 5 is a schematic drawing of another arc according to the utility model drawn in an arc chute.
In the figure: 1. arc extinguishing chamber, 11, shell, 111, protrusion, 1111, protrusion top surface, 1112, protrusion side surface, 112, side, 1121, side wall, 1122, tail wall, 1123, end wall, 12, permanent magnet, 13, magnetic conductor, 131, first member, 132, second member; 100. an arc extinguishing chamber; 200. an opening; 2. the contact system, 21, moving contact, 22, static contact.
Detailed Description
The following detailed description of specific embodiments of the utility model, while given in connection with the accompanying drawings, is not intended to limit the scope of the utility model, and any changes that may be made in the form of the inventive concepts described herein, without departing from the spirit and scope of the utility model.
In the following description, any reference to the directions or azimuths of up, down, left, right, front and rear is based on the positions shown in the corresponding drawings, and therefore, should not be construed as a limitation on the technical solutions provided by the present utility model.
Fig. 1 is a schematic diagram of a contact quenching system. The contact extinguishing system comprises an extinguishing chamber 1 and a contact system 2. The contact system 2 comprises a moving contact 21 and a fixed contact 22. After the moving contact 21 acts, the moving contact is contacted with or separated from the fixed contact 22. And then the switch comprising the contact arc extinguishing system is closed or opened.
In this embodiment, the moving contact 21 is rotationally matched with the fixed contact 22, and of course, other track movement modes also belong to the protection scope of the utility model. For example, the moving contact 21 adopts a translational motion mode.
The movable contact 21 may be referred to as a movable conductive rod, and the stationary contact 22 may be referred to as a stationary conductive rod. A moving contact is generally disposed at a contact position of the moving contact 21 and the fixed contact 22, and correspondingly, a fixed contact is disposed at a contact position of the fixed contact 22, and the moving contact is contacted with or separated from the fixed contact.
When the movable contact 21 is separated from the fixed contact 22, an arc is generated therebetween. The arc is extinguished by means of said arc extinguishing chamber 1. The arc extinguishing chamber 1 thus described corresponds to the region in which the arc is generated. This requires that the arc chute 1 be positioned in correspondence with the contact system 2. In this solution, the arc extinguishing chamber 1 should be located in the path of the arc generation.
Fig. 2 is a schematic view of the arc extinguishing chamber 1. The arc extinguishing chamber 1 comprises a shell 11, a permanent magnet 12 and a magnetic conduction piece 13. The housing 11 is made of an insulating material, and an arc extinguishing chamber 100 is formed inside the housing. The arc extinguishing chamber 100 is used for extinguishing an arc, that is, the arc extinguishing chamber 100 is an internal space of the arc extinguishing chamber 1 and is used for extinguishing the arc. The arc extinguishing chamber 100 is placed in the path of the moving contact action of the moving contact 21.
The permanent magnet 12 extends from the top of the arc-extinguishing chamber 1 to the inside of the arc-extinguishing chamber, and the direction of the internal magnetic field of the permanent magnet 12 extends along the length direction of the permanent magnet 12, namely, the permanent magnet 12 extends along the length direction of the permanent magnet to the inside of the arc-extinguishing chamber. The internal magnetic field direction refers to the direction from the S pole to the N pole inside the permanent magnet 12. The two magnetic conducting pieces 13 are L-shaped, the two L-shaped magnetic conducting pieces 13 are respectively positioned at two sides of the length direction of the permanent magnet 12, so that a semi-closed arc extinguishing chamber 100 is respectively formed at two sides of the permanent magnet 12, and an insulating structure is arranged on the inner wall of the arc extinguishing chamber 100. In the present embodiment, the case 11 constitutes the insulating structure, but the arc extinguishing chamber 1 may be provided with an insulating structure alone, for example, by insulating and coating the permanent magnet 12 and the magnetic conductor 13.
The magnetic conductive member 13 has a magnetic conductive body, typically magnetic steel, for enhancing the magnetic field in the arc extinguishing chamber 100 in the arc extinguishing chamber 1, thereby improving the arc extinguishing capability of the arc extinguishing chamber 1. The magnetic conduction piece 13 is L-shaped. The magnetic conductive members 13 are provided in a pair, and are respectively positioned at both sides of the permanent magnet 12. The permanent magnet 12 and the pair of magnetic conductive members 13 form a mountain shape. The permanent magnet 12 is attached to the housing 11, and the permanent magnet 12 is attached to the outside of the housing 11. So that the permanent magnet 12 and the magnetic conductive member 13 have higher mounting stability.
An opening 200 is provided on the side of the arc extinguishing chamber 100 remote from the permanent magnet 12, the opening 200 facing the movable contact 21. The movable contact 21 operates inside the arc extinguishing chamber 100 through the opening 200.
As shown in fig. 3, the housing 11 includes a protrusion 111 extending from the top of the arc extinguishing chamber 1 toward the inside of the arc extinguishing chamber, the permanent magnet 12 is inserted into the protrusion 111 from the back of the protrusion 111, and side portions 112 are provided at both sides of the protrusion 111. The protrusion 111 is used for matching with the permanent magnet 12, specifically, fitting with the permanent magnet 12. The side portion 112 is zigzag, and is used for matching with the magnetic conductive member 13, specifically, is attached to the magnetic conductive member 13. Preferably, the extension direction of the protrusions 111 should be identical to the length direction of the permanent magnets 12.
The protrusion 111 includes three walls. The three wall surfaces are connected end to end. Preferably, three walls form a "n" shape, forming a protruding cavity in the arc chute 1, while three walls form a cavity in the middle of the outer back of the housing 11, which cavity is used for the embedding of said permanent magnets 12.
Specifically, the protrusion 111 includes a protrusion top surface 1111 and a pair of protrusion side surfaces 1112, wherein the protrusion side surfaces 1112 are located on two sides of the protrusion top surface 1111, and one end of the protrusion side surface 1112 is engaged with one end of the protrusion top surface 1111 and the other end is engaged with the side portion 112.
The side portion 112 also includes three walls. The three wall surfaces are connected end to end. Specifically, the side portion 112 includes a side wall 1121, a tail wall 1122, and an end wall 1123, the side wall 1121 forms a side surface of the arc extinguishing chamber 1, the end wall 1123 is located at two sides of the opening 200 of the arc extinguishing chamber 100, the tail wall 1122 is located at a side of the arc extinguishing chamber 100 away from the opening 200, one end of the tail wall 1122 is connected to the side wall 1121, and the other end is connected to the protrusion side surface 1112.
Referring specifically to fig. 2, the magnetic conductive member 13 includes a first member 131 and a second member 132. A first member 131 and a second member 132 constitute a magnetically permeable member 13. The pair of magnetic conductors 13 comprises two sets of said first member 131 and said second member 132. The first member 131 is located at a side far from the opening 200 of the arc extinguishing chamber 100 and is located at an outer side of the tail wall 1122, and preferably, the first member 131 is attached to an outer side surface of the tail wall 1122.
The second member 132 is located at a side of the arc extinguishing chamber 100 and outside the sidewall 1121. Preferably, the second member 132 is attached to the outer side surface of the side wall 1121, and more preferably, the second member 132 is also attached to the wall surface of the end wall 1123.
At least one of the first member 131 and the second member 132 is a magnetic conductor, typically magnetic steel. Namely, one scheme is as follows: the first member 131 is a magnetizer, and the second member 132 is made of an insulating material. The second scheme is as follows: the second member 132 is a magnetizer, and the first member 131 is made of an insulating material.
Preferably, the first member 131 and the second member 132 are magnetic conductors, such as magnetic steel. More preferably, the first member 131 and the second member 132 are integrally formed.
Fig. 4 and 5 are schematic views of the movement of the arc in the arc extinguishing chamber 2.
Since the arc extinguishing chamber 1 has the protrusion 111 on the housing 11, the arc extinguishing chamber 100 is formed in the inner space of the arc extinguishing chamber 1 at both sides of the protrusion 111.
As shown in fig. 4, the current flows from the movable contact 21 to the fixed contact 22, and the magnetic pole direction of the permanent magnet 12 is that the top of the arc extinguishing chamber 1 points to the inside of the arc extinguishing chamber 1, and at this time, the magnetic field inside the arc extinguishing chamber 2 pulls the arc to the inside of the arc extinguishing chamber 100 at the left side.
As shown in fig. 5, the current flows from the fixed contact 22 to the moving contact 21, and the magnetic pole direction of the permanent magnet 12 is that the top of the arc extinguishing chamber 1 points to the inside of the arc extinguishing chamber 1, and at this time, the magnetic field inside the arc extinguishing chamber 2 pulls the arc to the inside of the arc extinguishing chamber 100 at the right side.
Of course, if the magnetic poles of the permanent magnet 12 are opposite, i.e. the N pole and S pole of the permanent magnet 12 are aligned, when the current flows from the moving contact 21 to the fixed contact 22, the magnetic field pulls the arc into the arc extinguishing chamber 100 at the right side; and current flows from the stationary contact 22 to the moving contact 21, the magnetic field pulls the arc inside the arc extinguishing chamber 100 to the left.
In the utility model, the permanent magnet 12 is matched with the two L-shaped magnetic conduction pieces 13, so that a stronger magnetic field is arranged in the arc extinguishing chamber 100, and the pulling force on the electric arc is increased. Secondly, because the permanent magnet 12 is inserted into the arc extinguishing chamber 1 along the length direction, the rear end of the permanent magnet 12 is arranged between the two L-shaped magnetic conducting pieces 13, and the front end of the permanent magnet is inserted into the arc extinguishing chamber 100, so that the space is fully utilized on the same size of the arc extinguishing chamber 1, the length of the permanent magnet 12 can be maximized, and better magnetic field force can be obtained.
Claims (7)
1. An arc extinguishing chamber containing a permanent magnet, wherein the arc extinguishing chamber (1) comprises a permanent magnet (12) and two L-shaped magnetic conducting pieces (13), and the inner magnetic field direction of the permanent magnet (12) is along the length direction of the permanent magnet (12), and is characterized in that: the two L-shaped magnetic conducting pieces (13) are respectively positioned at two sides of the length direction of the permanent magnet (12), so that a semi-closed arc extinguishing chamber (100) is respectively formed at two sides of the permanent magnet (12), and an insulating structure is arranged on the inner wall of the arc extinguishing chamber (100).
2. An arc chute containing permanent magnets according to claim 1, wherein: the arc extinguishing chamber (1) further comprises a shell (11), the shell (11) forms the insulating structure, the shell (11) comprises a protrusion (111) extending from the top of the arc extinguishing chamber (1) to the inside of the arc extinguishing chamber, and the permanent magnet (12) is embedded into the protrusion (111) from the back of the protrusion (111).
3. An arc chute containing permanent magnets according to claim 1, wherein: one side of the arc extinguishing chamber (100) is provided with an opening (200), the magnetic conduction piece (13) comprises a first component (131) and a second component (132), the first component (131) is positioned at one side far away from the opening (200), and the second component (132) is positioned at the left side and the right side of the arc extinguishing chamber (1).
4. An arc chute containing permanent magnets according to claim 2, wherein: one side of the arc extinguishing chamber (100) is provided with an opening (200), the shell (11) is provided with side parts (112) at two sides of the protrusion (111), the protrusion (111) comprises a protrusion top surface (1111) and a pair of protrusion side surfaces (1112), the protrusion side surfaces (1112) are positioned at two sides of the protrusion top surface (1111), one end of the protrusion side surface (1112) is connected with one end of the protrusion top surface (1111), and the other end is connected with the side parts (112).
5. An arc chute containing permanent magnets according to claim 4, wherein: the side portion (112) comprises a side wall (1121), a tail wall (1122) and an end wall (1123), the side wall (1121) forms the side face of the arc extinguishing chamber (100), the end wall (1123) is located at two sides of the opening (200), the tail wall (1122) is located at one side, far away from the opening (200), of the arc extinguishing chamber (100), one end of the tail wall (1122) is connected with the side wall (1121), and the other end of the tail wall (1122) is connected with the protruding side face (1112).
6. A contact arc extinguishing system, characterized in that: comprising a contact system (2) and an arc chute (1) according to any one of claims 1 to 5; the contact system (2) comprises a moving contact (21) and a fixed contact (22), and the moving contact (21) is contacted with or separated from the fixed contact (22) after acting.
7. The contact quenching system as claimed in claim 6, wherein: the contact part of the movable contact (21) and the fixed contact (22) is provided with a movable contact, and correspondingly, the contact part of the fixed contact (22) is provided with a fixed contact; the arc extinguishing chamber (100) is arranged on the moving contact action path of the moving contact (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321319530.3U CN219873236U (en) | 2023-05-29 | 2023-05-29 | Explosion chamber containing permanent magnet and contact explosion system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321319530.3U CN219873236U (en) | 2023-05-29 | 2023-05-29 | Explosion chamber containing permanent magnet and contact explosion system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219873236U true CN219873236U (en) | 2023-10-20 |
Family
ID=88341972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321319530.3U Active CN219873236U (en) | 2023-05-29 | 2023-05-29 | Explosion chamber containing permanent magnet and contact explosion system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219873236U (en) |
-
2023
- 2023-05-29 CN CN202321319530.3U patent/CN219873236U/en active Active
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| GR01 | Patent grant |