Arc extinguish chamber assembly convenient to transfer

Abstract

The utility model relates to an arc extinguish chamber assembly convenient to transfer, which comprises an installation assembly and an arc extinguish assembly, and the installation assembly comprises two fixing plates, an installation block and a plurality of groups of gas production blocks. The front end and the rear end of the mounting block and the two gas generating blocks are inserted into the two fixing plates respectively, circumferential displacement among the mounting block, the gas generating blocks and the fixing plates is limited, the arc extinguishing assembly is fixed in an arc extinguishing cavity defined by the two fixing plates, the mounting block and each group of gas generating blocks, and the lower end of the arc extinguishing assembly is connected with the two gas generating blocks in the same group in a clamped mode. The front-and-back displacement between the two gas production blocks is limited, the gas production blocks are connected with the fixing plate through screws, the front-and-back displacement of the fixing plate relative to the gas production blocks is limited, the front-and-back displacement of the mounting block relative to the fixing plate is also limited, pre-tightening of the whole arc extinguish chamber assembly is achieved, and mounting and transportation of the arc extinguish chamber assembly are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to an arc extinguishing chamber component which is easy to transport. Background Art

[0002] The arc-extinguishing chamber assembly typically consists of two fixed plates, with a mounting block and a gas-generating block positioned between the fixed plates. The mounting block, gas-generating block, and the two fixed plates enclose an arc-extinguishing chamber, within which the arc-extinguishing assembly is located. The arc-strike plates and grid plates in the arc-extinguishing assembly need to be riveted to the front and rear plates. This riveting is a loose fit, and the arc-extinguishing chamber assembly needs to be assembled and then transported to a dedicated press for compaction. During transport, the front and rear ends of the gas-generating block and mounting block are plugged into the fixed plates, and the arc-strike plates and grid plates are riveted to the fixed plates. This loose connection makes them prone to shaking during transportation and transfer, leading to disassembly and inconvenience in installation and transportation.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0004] In view of the deficiencies in the prior art, an embodiment of the present utility model discloses an arc extinguishing chamber assembly that is easy to transport, so as to solve the problem that the arc extinguishing chamber assembly is not firmly connected and is inconvenient to install and transport.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] An arc extinguishing chamber assembly that is easy to transport includes an installation assembly and an arc extinguishing assembly, wherein the installation assembly includes: two fixing plates arranged parallel to each other; two installation blocks symmetrically plugged into the two sides between the two fixing plates; at least one group of gas-producing blocks, each group having two blocks, which are parallel to the fixing plates and spaced between the two fixing plates, and each gas-producing block is screwed and plugged into the closest fixing plate; an arc extinguishing assembly, the lower end of which is clipped and connected to the same group of gas-producing blocks; wherein the two fixing plates, the installation blocks and each group of gas-producing blocks enclose an arc extinguishing chamber, and the arc extinguishing assembly is fixed in the arc extinguishing chamber.

[0007] Its further technical solution is that the gas producing block includes: a first gas producing block, located at the lower end of the two mounting blocks, and the two fixed plates, the mounting block and the two first gas producing blocks enclose a first arc extinguishing chamber; the arc extinguishing assembly includes: a first arc striking plate, the front and rear ends of which are clamped between the two first gas producing blocks; a first grid plate, the upper and lower ends of which are clamped between the mounting block and the two first gas producing blocks, and the front and rear ends are respectively plugged into the two fixed plates.

[0008] Its further technical solution is that the first gas producing block includes: a first card slot, which is opened on one side of the adjacent surfaces of the two first gas producing blocks; the first arc-starting plate includes: a bent portion, the upper end of which is exposed from the first gas producing block and extends into the first arc extinguishing chamber, is parallel to the first grid plate, and the lower end is stuck in the first card slot; a first additional block, the upper end of which is screwed to the lower end of the bent portion, and the shape matches the first card slot.

[0009] Its further technical solution is that the first gas producing block includes: a first plug block, which is arranged on a side of the first gas producing block close to the fixed plate; a first screw hole, which is opened on a side of the first gas producing block close to the fixed plate; the fixed plate includes: a first plug hole, the position of which corresponds to the first plug block; and a first countersunk hole, the position of which corresponds to the first screw hole.

[0010] Its further technical solution is that the gas producing block includes: a second gas producing block, which is located between the two mounting blocks and the upper end of the first gas producing block, and the two fixed plates, the two mounting blocks and the second gas producing block enclose a second arc extinguishing chamber; the mounting assembly includes: an anti-breakdown part, which is arranged at the upper end of the mounting block, and the front and rear ends are respectively plugged into the two fixed plates; the arc extinguishing assembly includes: a second arc-striking plate, which has two pieces, and the front and rear ends are clamped between the two second gas producing blocks, and the two fixed plates are plugged in at the same time; a second grid plate, the upper and lower ends of which are clamped between the anti-breakdown part and the two second gas producing blocks, and the front and rear ends are respectively plugged into the two fixed plates.

[0011] Its further technical solution is that the second gas producing block includes: a second card slot, which is opened on both sides of the adjacent surfaces of the two second gas producing blocks; the second arc-starting plate includes: a first edge, parallel to the second grid plate, exposed from the second gas producing block and extending into the second arc extinguishing chamber, parallel to the second grid plate; a second edge, which is snapped into the second card slot, parallel to the second grid plate; a third edge, which is snapped into the second card slot, obliquely connecting the first edge and the third edge.

[0012] Its further technical solution is that the lower end of the second gas producing block and the lower end of the second side extend out of the mounting block; the second arc striking piece includes: a second additional block, which is screwed to the side of the second side close to the mounting block and extends into the first arc extinguishing chamber.

[0013] A further technical solution is that third rivet blocks are set at the front and rear ends of the first side and the second side; the fixing plate includes a second rivet hole, the position of the second rivet hole corresponds to the third rivet block; the third rivet block passes through the second gas generating block and is riveted to the second rivet hole.

[0014] Its further technical solution is that the second gas producing block includes: a second plug block, which is arranged on a side of the second gas producing block close to the fixed plate, and its position corresponds to the first plug hole; a second screw hole, which is opened on a side of the second gas producing block close to the fixed plate, and its position corresponds to the first countersunk hole.

[0015] A further technical solution is that the conductivity of the first additional block and the second additional block is greater than the conductivity of the bending portion, the first side, the second side and the third side, and the melting point of the first additional block and the second additional block is higher than the melting point of the bending portion, the first side, the second side and the third side.

[0016] Its further technical solution is that the installation assembly includes a first shell, a second shell and a top cover, the first shell is screwed to the second shell, the top cover is screwed to the upper ends of the first shell and the second shell respectively, and the first shell, the second shell and the top cover encapsulate the installation assembly and the arc extinguishing assembly.

[0017] The beneficial effects of the embodiments of the present utility model are as follows:

[0018] (1) The arc extinguishing chamber assembly of the utility model, which is easy to transport, includes a mounting assembly and an arc extinguishing assembly, and the mounting assembly includes a fixed plate, a mounting block and a gas-producing block. The front and rear ends of the mounting block and the two gas-producing blocks are respectively plugged into the two fixed plates, which limits the circumferential displacement between the mounting block, the gas-producing block and the fixed plates. The arc extinguishing assembly is fixed in the arc extinguishing chamber surrounded by the two fixed plates, the mounting block and each group of gas-producing blocks, and the lower end is clamped and connected to the two gas-producing blocks of the same group, which limits the front and rear displacement between the two gas-producing blocks. By screwing the gas-producing block to the fixed plate, the front and rear displacement of the fixed plate relative to the gas-producing block is limited, which also limits the front and rear displacement of the mounting block relative to the fixed plate, thereby achieving pre-tightening of the entire arc extinguishing chamber assembly and facilitating the installation and transportation of the arc extinguishing chamber assembly.

[0019] (2) Furthermore, the first additional block and the second additional block are the first parts to come into contact with the arc and are easily damaged by burning. By connecting the first additional block to the lower end of the bending portion with screws and the second additional block to the second side surface with screws, the installation and replacement of the first additional block and the second additional block are facilitated, thereby reducing the cost of component replacement.

[0020] (3) Furthermore, the first and second additional blocks have a greater electrical conductivity than the bend, first side, second side, and third side, and their melting points are higher than those of the bend, first side, second side, and third side. The first and second additional blocks have higher electrical conductivity and arc erosion resistance, facilitating arc extinguishing during hot disconnection and extending the product's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is an internal axonometric view of the arc extinguishing chamber assembly of the present invention.

[0022] Figure 2 This is an axonometric view of the arc extinguishing chamber assembly of the present invention after the outer shell and the fixing plate are removed.

[0023] Figure 3 It is an axonometric view of the mounting block, the first gas producing block, the second gas producing block, the first arc striking piece and the second arc striking piece in the arc extinguishing chamber assembly of the present invention.

[0024] Figure 4 This is a front view structural diagram of the first gas producing block and the second gas producing block in the arc extinguishing chamber assembly of the utility model.

[0025] Figure 5 It is an axonometric view of the arc extinguishing chamber assembly of the present invention.

[0026] Figure 6 This is a front view structural diagram of the arc extinguishing chamber assembly of the present invention after the first shell is removed.

[0027] In the picture:

[0028] 1. Mounting block; 11. Fourth plug-in block; 2. First gas generating block; 21. First plug-in block; 22. First screw hole; 23. First slot; 24. Third slot; 25. First slot; 3. Second gas generating block; 31. Second plug-in block; 32. Second screw hole; 33. Second slot; 34. Second slot; 4. Fixing plate; 41. First slot; 42. First countersunk hole; 43. Second rivet hole; 44. Third plug-in block; 5. Anti-penetration piece; 51. Disinfection Free mesh; 61, first arc-starting plate; 611, bending portion; 612, first additional block; 62, second arc-starting plate; 621, first side; 6211, third rivet block; 622, second side; 623, third side; 624, second additional block; 6241, extension portion; 63, first grid plate; 64, second grid plate; 71, first shell; 711, sliding groove; 72, second shell; 73, top cover; 731, window; 8, slide. DETAILED DESCRIPTION

[0029] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the device proposed in the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0031] First embodiment:

[0032] This embodiment discloses an arc extinguishing chamber assembly that is easy to transport.

[0033] Figure 1 This is an internal axonometric view of the arc extinguishing chamber assembly of the present invention. Figure 2 This is the axonometric view of the arc extinguishing chamber assembly of the present invention after removing the outer shell and the fixing plate. Figure 1 and Figure 2 As shown, the easily transportable arc-extinguishing chamber assembly includes a mounting assembly and an arc-extinguishing assembly. The mounting assembly includes a fixed plate 4, a mounting block 1, and a gas-generating block. The fixed plates 4 are provided in two pieces, arranged parallel to each other. The mounting blocks 1 are provided in two pieces, symmetrically inserted on either side between the two fixed plates 4. There is at least one group of gas-generating blocks, each group consisting of two blocks, arranged parallel to the fixed plates 4 and spaced apart between the two fixed plates 4. Each gas-generating block is screwed and inserted into the nearest fixed plate 4. The arc-extinguishing assembly is snap-connected at its lower end to the same group of gas-generating blocks. The two fixed plates 4, the mounting block 1, and each group of gas-generating blocks enclose an arc-extinguishing chamber that accommodates the arc-extinguishing assembly. Exemplarily, the mounting block 1 includes a fourth plug-in block 11, which is disposed at the front and rear ends of the mounting block 1. The fixed plate 4 includes a third plug-in hole 44, which is positioned correspondingly to the fourth plug-in block 11. The arc-extinguishing chamber has an arc inlet at its lower end and an arc outlet at its upper end. The mounting block 1 is made of insulating material to prevent breakdown. The gas generating block is made of gas generating materials, such as nylon, which generates a large amount of gas after high temperature erosion by the arc, forming a gas blow to quickly extinguish the arc.

[0034] like Figure 2As shown, the gas-generating block further includes a first gas-generating block 2, which is located at the lower end of the two mounting blocks 1. The two fixing plates 4, the mounting blocks 1, and the two first gas-generating blocks 2 enclose a first arc-extinguishing chamber. The arc-extinguishing assembly includes a first arc-striking plate 61 and a first grid plate 63. The front and rear ends of the first arc-striking plate 61 are clamped between the two first gas-generating blocks 2. The upper and lower ends of the first grid plate 63 are clamped between the mounting block 1 and the two first gas-generating blocks 2, and the front and rear ends are respectively connected to the two fixing plates 4.

[0035] Exemplarily, an arc discharge port is provided on the mounting block 1 corresponding to the upper end of the first arc extinguishing chamber. The first gas producing block 2 includes a first plug block 21 and a first screw hole 22. The first plug block 21 is provided on a side of the first gas producing block 2 close to the fixed plate 4, and the first screw hole 22 is provided on a side of the first gas producing block 2 close to the fixed plate 4. The fixed plate 4 includes a first plug hole 41 and a first countersunk hole 42. The position of the first plug hole 41 corresponds to the first plug block 21, and the position of the first countersunk hole 42 corresponds to the first screw hole 22. The front and rear ends of the first grid 63 can also be riveted to the two fixed plates 4.

[0036] Figure 3 It is an axonometric view of the mounting block, the first gas producing block, the second gas producing block, the first arc striking piece and the second arc striking piece in the arc extinguishing chamber assembly of the present invention. Figure 4 This is a front view structural diagram of the first gas producing block and the second gas producing block in the arc extinguishing chamber assembly of the present invention. Figure 3 and Figure 4 As shown, for example, a first slot 25 is defined at the upper end of the first gas producing block 2, near the fixing plate 4. The two legs of the first grid 63 are inserted into the first slots 25, securing the first grid 63 and simultaneously connecting the two first gas producing blocks 2. The first gas producing block 2 includes a first retaining slot 23, located on one side of the adjacent surface of the two first gas producing blocks 2. The first arc-starting plate 61 includes a bent portion 611 and a first additional block 612. The upper end of the bent portion 611 protrudes from the first gas producing block 2 and extends into the first arc-extinguishing chamber. It is parallel to and electrically connected to the first grid 63, directing the arc into or out of the first arc-extinguishing chamber. The lower end of the bent portion 611 engages the first retaining slot 23. The upper end of the first additional block 612 connects to the lower end of the bent portion 611. Its shape matches the first retaining slot 23, and it bends toward the arc inlet at the lower end of the first arc-extinguishing chamber, forming a narrow gap that accelerates the flow of high-temperature gas toward the wide-spaced portion above. The first gas producing block 2 includes a third clamping slot 24 . The third clamping slot 24 is provided on the other side of the adjacent surfaces of the two first gas producing blocks 2 . An arc contact is clamped in the third clamping slot 24 .

[0037] like Figure 2 and Figure 3As shown, further, the gas producing block includes a second gas producing block 3, which is located between the two mounting blocks 1 and at the upper end of the first gas producing block 2. The two fixing plates 4, the two mounting blocks 1 and the second gas producing block 3 enclose a second arc extinguishing chamber. The mounting assembly includes an anti-breakdown part 5, which is arranged at the upper end of the mounting block 1, and the two fixing plates 4 are respectively plugged into the front and rear ends. The arc extinguishing assembly includes a second arc-starting plate 62 and a second grid plate 64. The second arc-starting plate 62 has two pieces, and the front and rear ends are clamped between the two second gas producing blocks 3 and riveted to the two fixing plates 4 at the same time. The upper and lower ends of the second grid plate 64 are clamped between the anti-breakdown part 5 and the two second gas producing blocks 3, and the front and rear ends are respectively plugged into the two fixing plates 4. Exemplarily, the second gas producing block 3 includes a second plug-in block 31 and a second screw hole 32. The second plug-in block 31 is arranged on the side of the second gas producing block 3 close to the fixing plate 4, and its position corresponds to the first plug-in hole 41. The second screw hole 32 is formed on a side of the second gas generating block 3 close to the fixing plate 4, and its position corresponds to the first countersunk hole 42. The front and rear ends of the second grid plate 64 can also be riveted to the two fixing plates 4.

[0038] like Figure 3 and Figure 4 As shown, the anti-breakdown member 5 is exemplarily made of insulating material, and an arc discharge port is provided on the anti-breakdown member 5 corresponding to the upper end of the second arc extinguishing chamber. A free-flowing net 51 is provided inside the anti-breakdown member 5. A second slot 34 is provided on the upper end of the second gas producing block 3, near the side of the fixing plate 4. The two legs of the second grid 64 are respectively inserted into the second slot 34, fixing the second grid 64 and connecting the two second gas producing blocks 3. The second gas producing block 3 includes a second slot 33, which is provided on both sides of the adjacent surfaces of the two second gas producing blocks 3. The second arc-starting plate 62 includes a first edge 621, a second edge 622, and a third edge 623. The first edge 621 is parallel to the second grid 64, exposed from the second gas producing block 3 and extending into the second arc extinguishing chamber. It is parallel to and electrically connected to the second grid 64, and guides the arc into or out of the second arc extinguishing chamber. The second edge 622 is inserted into the second slot 33 and is parallel to the second grid 64. The third side 623 snaps into the second slot 33, obliquely connecting the first and third sides 621 and 623. Third rivet blocks 6211 are positioned at the front and rear ends of the first and second sides 621 and 622. The fixing plate 4 includes a second rivet hole 43, which corresponds to the position of the third rivet block 6211. The third rivet block 6211 passes through the second gas generating block 3 and is riveted to the second rivet hole 43.

[0039] Preferably, the conductivity of the first and second additional blocks 612, 624 is greater than that of the bend 611, first side 621, second side 622, and third side 623, and the melting points of the first and second additional blocks 612, 624 are higher than those of the bend 611, first side 621, second side 622, and third side 623. Specifically, the first and second additional blocks 612, 624 are made of copper-tungsten alloy, while the bend 611, first side 621, second side 622, and third side 623 are made of No. 10 steel plate. The first and second additional blocks 612, 624 have higher electrical conductivity and arc erosion resistance, facilitating arc extinguishing during live disconnection and extending the product's service life.

[0040] Figure 5 It is an axonometric view of the arc extinguishing chamber assembly of the present invention. Figure 6 This is a front view structural diagram of the arc extinguishing chamber assembly of the present invention after the first shell is removed. Figure 5 and Figure 6 As shown, further, the mounting assembly includes a first housing 71, a second housing 72, and a top cover 73. The first housing 71 is screwed to the second housing 72, and the top cover 73 is screwed to the upper ends of the first housing 71 and the second housing 72, respectively. The first housing 71, the second housing 72, and the top cover 73 enclose the mounting assembly and the arc extinguishing assembly. For example, a sliding groove 711 is provided on the adjacent surfaces of the first housing 71 and the second housing 72. A slide 8 is slidably arranged in the sliding groove 711. The slide 8 and the moving contact of the circuit breaker pass through the slide 8 and drive the slide 8 to move. The moving contact (not shown in the figure) rotates and contacts or disconnects with the arc contact. The slide 8 limits the rotation angle of the moving contact. A window 731 is provided on the top cover 73 for gas exhaust.

[0041] When this embodiment is working:

[0042] A high-temperature arc is generated when the arc contact and the moving contact are closed or opened. The first arc-starting piece 61 on the arc contact side introduces the arc into the first arc-extinguishing chamber on that side, and the second arc-starting piece 62 on that side introduces the arc in the first arc-extinguishing chamber into the second arc-extinguishing chamber. The second arc-starting piece 62 on the other side introduces the arc in the second arc-extinguishing chamber into the first arc-extinguishing chamber on the other side, and leads the arc back to the moving contact through the first arc-starting piece 61 on the other side. The more grid plates the arc passes through, the more segments the arc cuts, and the more conducive the breaking current is to arc extinguishing.

[0043] In this embodiment, the front and rear ends of the mounting block 1 and the two gas-producing blocks are respectively inserted into the two fixed plates 4, which limits the circumferential displacement between the mounting block 1, the gas-producing block and the fixed plates 4. The arc extinguishing assembly is fixed in the arc extinguishing chamber surrounded by the two fixed plates 4, the mounting block 1 and each group of gas-producing blocks, and the lower end is clamped and connected to the two gas-producing blocks of the same group, which limits the front and rear displacement between the two gas-producing blocks. By screwing the gas-producing block to the fixed plate 4, the front and rear displacement of the fixed plate 4 relative to the gas-producing block is limited, which also limits the front and rear displacement of the mounting block 1 relative to the fixed plate 4, thereby realizing pre-tightening of the entire arc extinguishing chamber assembly and facilitating the installation and transportation of the arc extinguishing chamber assembly.

[0044] Second embodiment:

[0045] Based on the first embodiment, the second embodiment further optimizes and refines the arc extinguishing assembly of the first embodiment.

[0046] like Figure 3 As shown, the upper end of the first additional block 612 is screwed to the lower end of the bent portion 611. The lower end of the second gas generating block 3 and the lower end of the second side 622 extend out of the mounting block 1; the second arc-starting piece 62 includes a second additional block 624, which is screwed to the side of the second side 622 near the mounting block 1.

[0047] like Figure 3 As shown, preferably, an extension portion 6241 is further provided on a side of the second additional block 624 close to the mounting block 1 , extending into the first arc extinguishing chamber and electrically connected to the first grid 63 to ensure arc extinguishing effect in the first arc extinguishing chamber.

[0048] In this embodiment, the first additional block 612 and the second additional block 624 are the first parts to come into contact with the arc and are easily damaged by burning. By screwing the first additional block 612 to the lower end of the bending portion 611 and screwing the second additional block 624 to the side of the second edge 622, the installation and replacement of the first additional block 612 and the second additional block 624 are facilitated, thereby reducing the cost of component replacement.

[0049] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. The arc extinguishing chamber assembly is easy to transport, characterized in that: The device comprises an installation component and an arc extinguishing component, wherein the installation component comprises: The fixed plates have two pieces and are arranged parallel to each other; There are two mounting blocks, which are symmetrically inserted on both sides between the two fixing plates; The gas generating blocks have at least one group, each group has two gas generating blocks, which are parallel to the fixing plates and spaced between the two fixing plates. Each gas generating block is screw-connected and plugged into the fixing plate closest to it. The arc extinguishing assembly has a lower end that is clipped and connected to the same group of gas generating blocks; The two fixing plates, the mounting block and each group of gas generating blocks enclose an arc extinguishing chamber, and the arc extinguishing assembly is fixed in the arc extinguishing chamber.

2. The arc extinguishing chamber assembly that is easy to transport according to claim 1, characterized in that: The gas production block comprises: A first gas generating block is located at the lower ends of the two mounting blocks, and the two fixing plates, the mounting blocks and the two first gas generating blocks enclose a first arc extinguishing chamber; The arc extinguishing assembly comprises: A first arc-starting piece, the front and rear ends of which are clamped between the two first gas-generating blocks; The first grid plate has upper and lower ends clamped between the mounting block and the two first gas production blocks, and the front and rear ends are respectively plugged into the two fixing plates.

3. The arc extinguishing chamber assembly that is easy to transport according to claim 2, characterized in that: The first gas production block comprises: A first slot is provided on one side of adjacent surfaces of the two first gas production blocks; The first arc-starting piece comprises: A bent portion, the upper end of which is exposed from the first gas generating block and extends into the first arc extinguishing chamber, is parallel to the first grid, and the lower end is clamped into the first clamping groove; The first additional block has an upper end connected to the lower end of the bent portion by a screw and has a shape that matches the first slot.

4. The arc extinguishing chamber assembly that is easy to transport according to claim 3, characterized in that: The first gas production block comprises: a first plug-in block, disposed on a side of the first gas generating block close to the fixing plate; a first screw hole, formed on a side of the first gas generating block close to the fixing plate; The fixing plate comprises: a first jack, located corresponding to the first plug block; The first countersunk hole is located corresponding to the first screw hole.

5. The arc extinguishing chamber assembly that is easy to transport according to claim 4, characterized in that: The gas production block comprises: A second gas producing block is located between the two mounting blocks and on the upper end of the first gas producing block. The two fixing plates, the two mounting blocks and the second gas producing block form a second arc extinguishing chamber. The installation components include: An anti-penetration member is provided at the upper end of the mounting block, and the front and rear ends are respectively connected to the two fixing plates; The arc extinguishing assembly comprises: The second arc-starting plate has two pieces, and the front and rear ends are clamped between the two second gas-generating blocks and riveted to the two fixing plates; The second grid sheet has upper and lower ends clamped between the anti-penetration component and the two second gas production blocks, and the front and rear ends are respectively plugged into the two fixing plates.

6. The arc extinguishing chamber assembly that is easy to transport according to claim 5, characterized in that: The second gas production block comprises: Second slots are provided on both sides of adjacent surfaces of the two second gas production blocks; The second arc-starting piece includes: a first side, parallel to the second grid, exposed from the second gas generating block and extending into the second arc extinguishing chamber, parallel to the second grid; The second side is inserted into the second slot and is parallel to the second grid plate; The third side is inserted into the second slot and obliquely connects the first side and the third side.

7. The arc extinguishing chamber assembly that is easy to transport according to claim 6, characterized in that: The lower end of the second gas generating block and the lower end of the second side extend out of the mounting block; the second arc starting piece includes: The second additional block is screw-connected to a side of the second side close to the mounting block and extends into the first arc extinguishing chamber.

8. The arc extinguishing chamber assembly that is easy to transport according to claim 6, characterized in that: Third rivet blocks are provided at the front and rear ends of the first side and the second side; the fixing plate includes a second rivet hole, the position of the second rivet hole corresponds to the third rivet block; the third rivet block passes through the second gas generating block and is riveted to the second rivet hole.

9. The arc extinguishing chamber assembly that is easy to transport according to claim 5, characterized in that: The second gas production block comprises: A second plug-in block is provided on a side of the second gas generating block close to the fixing plate and is positioned corresponding to the first plug-in hole; The second screw hole is formed on a side of the second gas generating block close to the fixing plate, and its position corresponds to that of the first countersunk hole.

10. The arc extinguishing chamber assembly convenient for transportation according to claim 7, characterized in that: The conductivity of the first additional block and the second additional block is greater than the conductivity of the bending portion, the first side, the second side and the third side, and the melting point of the first additional block and the second additional block is higher than the melting point of the bending portion, the first side, the second side and the third side.

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