CN210200659U - Arc extinguish chamber - Google Patents
Arc extinguish chamber Download PDFInfo
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- CN210200659U CN210200659U CN201921587541.3U CN201921587541U CN210200659U CN 210200659 U CN210200659 U CN 210200659U CN 201921587541 U CN201921587541 U CN 201921587541U CN 210200659 U CN210200659 U CN 210200659U
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- arc
- piece
- grid
- gas
- extinguishing
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Abstract
An arc extinguish chamber belongs to the technical field of low-voltage electrical appliances. Including the bars piece subassembly, the bars piece subassembly include the bars piece that the several interval set up, the cladding has the baffle subassembly on the bars piece leg of several bars piece, characteristics are: the baffle plate assembly comprises a gas production part and a heat insulation support part, the gas production part comprises a gas production part and a matching cavity, a plurality of arc extinguishing grid piece inserting strips are arranged on the matching cavity at intervals, grid piece legs are located in the matching cavity and are inserted and matched with slots formed between adjacent arc extinguishing grid piece inserting strips, the heat insulation support part is inserted into the matching cavity and located between the gas production part and the grid piece legs, and the heat insulation support part is used for reducing the heat absorbed by the gas production part and preventing the gas production part from being deformed by heating. The advantages are that: the thermosetting material and the gas generating material are effectively combined to play a synergistic role, namely, the thermosetting material and the gas generating material respectively play the due roles and also form functional complementation.
Description
Technical Field
The utility model belongs to the technical field of low-voltage apparatus, concretely relates to explosion chamber.
Background
The breaking index of the existing molded case circuit breaker is higher and higher, and in order to ensure rapid arc extinguishing, a gas production material is often used in an arc extinguishing chamber to assist in improving the arc voltage and improving the arc extinguishing capability. For the conventional arc-extinguishing chamber, a single gas-generating material or a single thermosetting material is fixed on two sides of the gap of the arc-extinguishing chamber. In order to increase the arc voltage of the circuit breaker more quickly and accelerate the arc to move into the arc extinguishing chamber, gas generating materials are widely used in the arc extinguishing system, when the arc erodes the gas generating materials, the gas generating materials can generate gas, the movement of the arc can be accelerated, the arc is cooled to reduce the diameter of the arc, and the circuit breaker has important influence on improving the breaking performance of the circuit breaker. Some arc extinguishing systems also adopt thermosetting materials to be arranged on two sides of the gap of the arc extinguishing chamber, and the thermosetting materials have the characteristics of higher temperature resistance level, capability of bearing very high energy and difficult deformation when being corroded by high temperature.
If a single gas generating material is placed in an arc extinguishing system, although gas generation is beneficial to improving the breaking performance of the arc extinguishing system, under the condition of larger energy, the temperature resistant grade of the arc extinguishing system cannot meet the actual requirement, and the arc extinguishing system is easy to deform when being ablated at high temperature, so that the performance of the arc extinguishing system is seriously influenced. And the single thermosetting material is placed in the arc extinguishing system, and the thermosetting material cannot generate enough gas to improve the pressure in the arc extinguishing chamber, so that the movement of the electric arc cannot be accelerated, and the extinguishing of the electric arc and the breaking of products are not facilitated.
In view of the above-mentioned prior art, there is a need for a reasonable improvement of existing arc chute structures. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.
Disclosure of Invention
The task of the utility model is to provide an explosion chamber, it carries out effective combination with thermosetting material and gas production material, and then plays the synergism, and thermosetting material still forms the function complementation with gas production material except exerting its due effect separately.
The utility model discloses a task is accomplished like this, an explosion chamber, including the bars piece subassembly, the bars piece subassembly include the bars piece that the several interval set up, the cladding has the baffle subassembly on the bars piece leg of several bars piece, the baffle subassembly including producing gas spare and thermal-insulated support piece, produce the gas spare including producing gas portion and cooperation chamber, the cooperation chamber on the interval be provided with several arc extinguishing bars piece and insert the strip, the bars piece leg be located the cooperation intracavity and with adjacent arc extinguishing bars piece between the slot that forms insert join in marriage, thermal-insulated support piece insert the cooperation intracavity and be located between gas portion and the bars piece leg for reduce the absorptive heat of gas portion of producing and prevent that gas portion is heated and is out of shape.
In a specific embodiment of the present invention, the gas generating member is made of a gas generating material.
In another specific embodiment of the present invention, the gas generating material is polyoxymethylene or nylon.
In another specific embodiment of the present invention, the heat insulating support is made of thermosetting plastic.
In another specific embodiment of the present invention, the heat insulation support is made of unsaturated polyester resin or epoxy material.
In yet another embodiment of the present invention, the thermosetting plastic is bulk molding compound.
The utility model discloses a further specific embodiment, thermal-insulated support piece on the interval be provided with the several arch, bellied quantity with the same and the position of quantity of arc extinguishing bars piece cutting is corresponding, when the explosion chamber assembly, thermal-insulated support piece's one side is hugged closely with gas production portion and is in the same place, thermal-insulated support piece's opposite side is protruding mutually to correspond contradict with the opposite face of arc extinguishing bars piece cutting promptly, and both assemble the back and be formed with the mounting groove between adjacent arc extinguishing bars piece cutting and between the adjacent arch that corresponds jointly, the bars piece leg then pack into in the corresponding mounting groove.
In a more specific embodiment of the present invention, the thickness of the protrusion is equal to the thickness of the arc extinguishing grid piece inserting strip.
In yet another specific embodiment of the present invention, after the arc extinguish chamber is assembled, the gas generating portion of the gas generating member is exposed to the inner cavity of the arc extinguish chamber.
The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: firstly, because the heat-insulating support piece is additionally arranged in the gas generating piece, the heat in a high-temperature area at the inner side of the arc-extinguishing grid piece can be blocked by the heat-insulating support piece, and the heat absorbed by the gas generating part is reduced, so that the phenomenon that the gas generating piece deforms due to heating to cause the blocking of a contact on/off brake is avoided; secondly, a gas generating part of the gas generating piece is exposed in an inner cavity of the arc extinguish chamber, and the gas generating part generates gas after the arc heats the gas generating part, so that arc extinction is effectively facilitated; thirdly, the thermosetting material and the gas generating material are effectively combined to play a synergistic role, namely, the thermosetting material and the gas generating material respectively play the due roles and also form functional complementation.
Drawings
Fig. 1 is an explosion diagram of the arc extinguishing chamber of the present invention.
Fig. 2 is the structural schematic diagram of the baffle plate assembly of the arc extinguish chamber.
In the figure: 1. a grid piece assembly, 11 grid pieces, 111 grid piece legs; 2. the arc extinguishing grid piece comprises a partition plate assembly, 21 gas generating pieces, 211 gas generating parts, 212 matching cavities, 2121 arc extinguishing grid piece inserting strips, 22 heat insulation supporting pieces, 221 bulges and 23 mounting grooves.
Detailed Description
The following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings, but the description of the embodiments by the applicant is not intended to limit the technical solutions, and any changes made according to the present invention rather than the essential changes should be considered as the protection scope of the present invention.
Referring to fig. 1 and 2, the present invention relates to an arc extinguish chamber, which includes a grid plate assembly 1, wherein the grid plate assembly 1 is used for extinguishing electric arc rapidly, and specifically includes a plurality of grid plates 11 arranged at intervals, and a plurality of grid plate legs 111 of the grid plates 11 are wrapped with a partition plate assembly 2. The baffle plate component 2 is a gas production component in the arc extinguish chamber, and after gas is produced, the baffle plate component pushes the electric arc to move towards the grid piece component 1 and accelerates the speed of the electric arc entering the grid piece component 1, so that the electric arc is extinguished as soon as possible. The diaphragm assembly 2 includes a gas generating member 21 and an insulating support member 22. The gas generating member 21 includes a gas generating portion 211 and a matching cavity 212, a plurality of arc extinguishing grid insert strips 2121 are arranged on the matching cavity 212 at intervals, and the grid legs 111 are located in the matching cavity 212 and are inserted into slots formed between adjacent arc extinguishing grid insert strips 2121. The heat insulation support 22 is inserted between the gas generating portion 211 and the matching cavity 212. The gas generating portion 211 of the gas generating member 21 is exposed in the inner cavity of the arc extinguishing chamber, so that the arc can heat the gas generating portion, thereby generating gas from the gas generating portion 211. Usually, the gas generating member 21 is made of a gas generating material, and the gas generating material is preferably polyoxymethylene or nylon. The insulating support 22 is typically formed of a thermosetting plastic, preferably an unsaturated polyester resin or an epoxy material, such as a DMC (bulk molding compound) resin.
Referring to fig. 2, a plurality of protrusions 221 are disposed on the heat insulation support 22 at intervals, and the number of the protrusions 221 is equal to the number of the arc chute blade inserts 2121 and corresponds to the position of the arc chute blade inserts. Specifically, during the assembly process, the heat insulating support 22 is inserted into the gas generating member 21, one side of the heat insulating support 22 is tightly attached to the gas generating portion 211, the other side of the heat insulating support 22, i.e., the opposite surfaces of the protrusions 221 and the arc-extinguishing grid piece inserts 2121 are correspondingly abutted against each other, the thicknesses of the protrusions 221 and the arc-extinguishing grid piece inserts 2121 are equal, mounting grooves 23 are formed between the adjacent arc-extinguishing grid piece inserts 2121 and between the corresponding adjacent protrusions 221 after the two are assembled, and the grid piece legs 111 are installed in the corresponding mounting grooves 23, so that the grid piece assembly 1 is more stable. After final assembly, the insulating support 22 is located between the grid legs 111 and the gas generating portion 211. In this embodiment, the heat insulating support 22 is additionally provided to block heat in a high temperature region inside the arc-extinguishing grid 11 for reducing heat absorbed by the gas-generating portion 211, thereby preventing the deformation of the gas-generating member 21 due to heating and causing the blocking of the contacts during opening and closing. The gas generating portion 211 of the gas generating component 21 is exposed in the inner cavity of the arc extinguishing chamber, and after the arc heats the gas generating portion 211, the gas generating portion 211 generates gas to help the arc extinguishing.
Claims (9)
1. The utility model provides an arc extinguish chamber, includes grid piece subassembly (1), grid piece subassembly (1) including grid piece (11) that the several interval set up, the cladding has baffle subassembly (2), its characterized in that on grid piece leg (111) of several grid piece (11): the baffle plate assembly (2) include and produce gas spare (21) and thermal-insulated support piece (22), produce gas spare (21) including producing gas portion (211) and cooperation chamber (212), cooperation chamber (212) on the interval be provided with several arc extinguishing bars piece gib (2121), grid leg (111) be located cooperation chamber (212) and with adjacent arc extinguishing bars piece gib (2121) between the slot that forms insert the cooperation, thermal-insulated support piece (22) insert in cooperation chamber (212) and be located between gas portion (211) and grid leg (111) for reduce the heat that gas portion (211) absorb and prevent that gas portion (211) from being heated and warping.
2. An arc extinguishing chamber according to claim 1, characterised in that said gas generating member (21) is made of a gas generating material.
3. The arc extinguish chamber according to claim 2, wherein the gas generating material is polyoxymethylene or nylon.
4. An arc extinguishing chamber according to claim 1, characterised in that said thermally insulating support (22) is made of thermosetting plastic.
5. An arc extinguishing chamber according to claim 4, characterised in that said thermally insulating support (22) is made of unsaturated polyester resin or epoxy material.
6. An arc chute according to claim 4 wherein said thermosetting plastic is a bulk molding compound.
7. An arc-extinguishing chamber according to claim 1, characterized in that a plurality of protrusions (221) are arranged on the heat-insulating support member (22) at intervals, the number of the protrusions (221) is the same as that of the arc-extinguishing grid blade inserts (2121), the positions of the protrusions correspond to each other, when the arc-extinguishing chamber is assembled, one side of the heat-insulating support member (22) is tightly attached to the gas-generating portion (211), the other side of the heat-insulating support member (22), namely the opposite surfaces of the protrusions (221) and the arc-extinguishing grid blade inserts (2121), are correspondingly abutted against each other, after the heat-insulating support member and the arc-extinguishing grid blade inserts are assembled, mounting grooves (23) are formed between the adjacent arc-extinguishing grid blade inserts (2121) and between the corresponding adjacent protrusions (221), and the grid blade legs (111) are mounted in the corresponding.
8. An arc chute according to claim 7, characterized in that said protrusions (221) and said arc chute grid blades (2121) have the same thickness.
9. An arc chute according to claim 1, characterized in that after said arc chute is assembled, said gas generating portion (211) of said gas generating member (21) is exposed to the inner cavity of the arc chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921587541.3U CN210200659U (en) | 2019-09-23 | 2019-09-23 | Arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921587541.3U CN210200659U (en) | 2019-09-23 | 2019-09-23 | Arc extinguish chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210200659U true CN210200659U (en) | 2020-03-27 |
Family
ID=69878563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921587541.3U Active CN210200659U (en) | 2019-09-23 | 2019-09-23 | Arc extinguish chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210200659U (en) |
-
2019
- 2019-09-23 CN CN201921587541.3U patent/CN210200659U/en active Active
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