CN217788312U - Arc extinguish chamber of circuit breaker - Google Patents

Abstract

An arc extinguish chamber of a circuit breaker belongs to the technical field of low-voltage electrical appliances. The circuit breaker includes the base member, is equipped with contact system in the base member, and the base member has an opening that is located the top, and the explosion chamber is put into in the base member from the opening part to it is fixed with the base member, its characteristics are: the explosion chamber still includes and carries the portion of taking, carries the operator of being convenient for to snatch the explosion chamber by the portion of taking. The advantages are that: the difficulty of grabbing the arc extinguish chamber is reduced by arranging the grabbing part on the arc extinguish chamber.

Description

Arc extinguish chamber of circuit breaker

Technical Field

The utility model belongs to the technical field of low-voltage apparatus, concretely relates to explosion chamber of circuit breaker.

Background

When the universal circuit breaker is in a breaking process, electric arcs can be generated between the movable contact and the fixed contact, the electric arcs enable gas inside the circuit breaker to be highly ionized, a large number of free metal ions are generated, and under the action of internal high voltage, if the free metal particles fly out of the circuit breaker, short circuits and burning of peripheral circuits can be caused, so that disasters are caused. Therefore, the universal circuit breaker is provided with an arc extinguish chamber for eliminating electric arcs, and the aim of eliminating free metal ions is fulfilled by arranging a series of parallel metal arc isolating plates and additionally arranging a single-layer or multi-layer filter screen perpendicular to the arc isolating plates above the arc isolating plates.

As shown in fig. 1, the arc chute of the conventional circuit breaker includes a pair of sidewalls 1, and arc chute plates 2 are arrayed between the pair of sidewalls 1. And an arc striking plate 3 is arranged on one side of the arc extinguishing grid plate 2 of the array, and the lower end of the arc striking plate 3 extends towards the interior of the arc extinguishing chamber. An arc extinguishing cover 4 is arranged above the pair of side walls 1, and the arc extinguishing cover 4 and the pair of side walls 1 form an outer shell of the arc extinguishing chamber. The upper part of the arc extinguishing grid plate 2 is provided with a flame extinguishing assembly 5, the flame extinguishing assembly 5 is arranged in a cavity below the arc extinguishing cover 4, and a dissociation eliminating assembly 6 is arranged above the flame extinguishing assembly 5.

Because the explosion chamber that the explosion chamber need install to the base member top holds the intracavity, and the installation need be grabbed the explosion chamber and operate with dismantling the in-process, along with the increase of explosion chamber weight, it becomes more and more difficult to grab the explosion chamber.

In view of the above-mentioned prior art, there is a need for a reasonable improvement of the arc extinguishing chamber structure of the existing circuit breaker. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

SUMMERY OF THE UTILITY MODEL

The task of the utility model is to provide an explosion chamber of circuit breaker, it reduces the degree of difficulty that snatchs the explosion chamber through set up the portion of snatching in explosion chamber both sides.

The utility model discloses a task is accomplished like this, an explosion chamber of circuit breaker, the circuit breaker includes the base member, is equipped with contact system in the base member, the base member have an opening that is located the top, the explosion chamber put into from the opening part the base member in, and with the base member fixed, the explosion chamber is still including carrying by the portion, carry by the portion be convenient for the operator snatch the explosion chamber.

In a specific embodiment of the present invention, the arc extinguishing chamber comprises a pair of side walls, an arc extinguishing grid, and an arc extinguishing cover, the arc extinguishing grid is arranged between the pair of side walls, and the arc extinguishing cover is installed on the top of the arc extinguishing chamber.

In a specific embodiment of the utility model, the lifting part is located the both sides of explosion chamber, just the lifting part be the spill structure.

In another specific embodiment of the present invention, the lifting portion is located on the top surface of the arc extinguish chamber.

In another specific embodiment of the present invention, the arc extinguishing chamber further includes an arc extinguishing chamber bracket, the pair of side walls are installed on both sides of the arc extinguishing chamber bracket, the arc extinguishing cover is installed above the arc extinguishing chamber bracket, and the lifting portion is located on the arc extinguishing chamber bracket.

In another specific embodiment of the present invention, the arc extinguishing chamber further comprises a flame extinguishing assembly and a free eliminating assembly, and the arc extinguishing chamber support comprises a support inner cavity for accommodating the flame extinguishing assembly and the free eliminating assembly.

The utility model discloses a still have a concrete embodiment, the subassembly of putting out a flame include mesh plate and gasket, mesh plate and gasket be one and separate the range upon range of setting one, the mesh plate include first orifice plate and second orifice plate the inside wall of support inner chamber on be equipped with and prevent slow-witted structure, prevent slow-witted structure and be used for distinguishing the installation first orifice plate and second orifice plate.

In yet another specific embodiment of the present invention, the first hole plate has a first air hole and a first pit arranged in an array, and the first pit is offset to one side of a central line of the first hole plate.

In a more specific embodiment of the present invention, the second hole plate has second air holes and a second pit arranged in an array, and the second pit is located on the centerline of the second hole plate.

The utility model discloses a still further a concrete embodiment, the explosion chamber still includes the gasket, the gasket be located between arc extinguishing cover and the explosion chamber support arc extinguishing cover on be equipped with a plurality of first air vents, the gasket on be equipped with a plurality of second air vents, first air vent with the second air vent is corresponding.

In a more specific embodiment of the present invention, the lifting portion is hook-shaped and can be accommodated in the arc extinguishing cover, and the lifting portion is provided with a groove portion for lifting.

The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: offer on the explosion chamber and carry the portion of taking and reduce the degree of difficulty of snatching the explosion chamber, especially, install a pair of lateral wall in the both sides of an explosion chamber support, the installation goes out the flame subassembly and disappears free subassembly in the explosion chamber support, and it is better to offer on the both sides face in the outside of explosion chamber support and carry the portion effect of taking, and the installation that had both been favorable to internals is convenient for the staff again and is installing and dismantling snatching of in-process to the explosion chamber.

Drawings

Fig. 1 is a schematic view of an arc chamber of a circuit breaker according to the prior art.

Fig. 2 is a schematic diagram of a circuit breaker arc extinguish chamber.

Fig. 3 is a part of an explosion diagram of the arc extinguish chamber of the circuit breaker.

Fig. 4 is another part of the explosion diagram of the arc extinguish chamber of the circuit breaker.

Fig. 5 is a schematic perspective view of the arc extinguish chamber bracket of the present invention.

Fig. 6 is a top view of the arc extinguish chamber bracket of the present invention.

Fig. 7 is a schematic view of the sealing sheet of the present invention.

Fig. 8 is a schematic view of the first orifice plate of the present invention.

Fig. 9 is a schematic view of a second orifice plate according to the present invention.

Fig. 10 is a schematic view of the sealing ring according to the present invention.

Fig. 11 is a schematic diagram of another embodiment of the present invention.

Fig. 12 is an expanded view of another embodiment of the present invention.

In the figure: 1. side wall, 11. Hole; 2. arc extinguishing grid pieces; 3. an arc striking sheet; 4. an arc extinguishing cover 41, a first vent hole; 5. the flame-extinguishing assembly comprises a flame-extinguishing assembly, 51, a mesh plate, 511, a first hole plate, 5111, a first air hole, 5112, a first pit, 512, a second hole plate, 5121, a second air hole, 5122, a second pit and 52 a gasket; 6. the deionization component 61, a mounting bracket 611, a mounting cavity 611 and a deionization part 62; 7. sealing sheet, 71, second vent hole, 72, through hole, 73, keep away the division; 8. arc extinguish chamber bracket, 81 bracket inner cavity, 811 resting part, 82 matching mounting part, 83 foolproof structure, 85 mounting hole; 9. a sealing ring 91 is used for keeping away the pit; 100. a gas generating member; 200. a lifting part, 201 a groove part.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, but the description of the embodiments is not intended to limit the technical solutions, and any changes made in the form of the present invention rather than the essential changes should be considered as the protection scope of the present invention.

In the following description, any concept relating to the directions or orientations of up, down, left, right, front, and rear is based on the position shown in the corresponding drawings, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

Referring to fig. 2, the present invention relates to an arc extinguish chamber of a circuit breaker, the circuit breaker includes a base, a contact system is provided in the base, the base has an opening at the top, the arc extinguish chamber is put into the opening from the top, and is fixed with the base, and the arc extinguish chamber is located above the contact system. The explosion chamber include a pair of lateral wall 1, explosion chamber support 8, arc extinguishing lid 4, the array has arc extinguishing bars piece 2 between a pair of lateral wall 1, install arc striking piece 3 in the one end of arc extinguishing bars piece 2, the inside extension of below explosion chamber of arc striking piece 3. The pair of side walls 1 are installed at both sides of the arc extinguishing chamber bracket 8 to complete the installation of the side walls 1, and the arc extinguishing cover 4 is also installed above the arc extinguishing chamber bracket 8 to complete the installation of the arc extinguishing cover 4.

As shown in fig. 2 and 4, a pair of gas generating members 100 are disposed on two sides of the lower portion of the arc-extinguishing grid plate 2, and the gas generating members 100 at least cover a part of the grid legs of the arc-extinguishing grid plate 2. When an arc is generated, the gas generating member 100 releases gas to help extinguish the arc.

As shown in fig. 3, the arc extinguishing chamber further comprises a flame extinguishing assembly 5 and a deionization assembly 6. The flame-out assembly 5 comprises mesh plates 51 and gaskets 52, wherein the gaskets 52 are positioned between two adjacent mesh plates 51, namely, the mesh plates 51 and the gaskets 52 are stacked one by one. The deionization assembly 6 includes a mounting bracket 61 and a deionization member 62 located inside the mounting bracket 61. In this embodiment, the mounting bracket 61 is frame-shaped and has a plurality of mounting cavities 611 arranged side by side. The deionizing element 62 is installed in the installation cavities 611, and the deionizing element 62 is of a folded wire mesh structure. The deionization assembly 6 is positioned above the flame extinguishing assembly 5.

As shown in fig. 3 and 7, the arc extinguish chamber further comprises a sealing plate 7, and the sealing plate 7 is located between the arc extinguish cover 4 and the arc extinguish chamber bracket 8, so that a gap between the arc extinguish cover and the arc extinguish chamber bracket is sealed, and the air tightness of the arc extinguish chamber is improved. The outer shape of the sealing sheet 7 corresponds to that of the arc extinguishing cover 4. A plurality of first vent holes 41 are formed in the arc-extinguishing cover 4, a plurality of second vent holes 71 are correspondingly formed in the sealing plate 7, and the first vent holes 41 correspond to the second vent holes 71. As a technical solution for adjusting the degree of exhaust from the arc extinguishing chamber cover, the diameter of the second vent hole 71 may be smaller than the diameter of the first vent hole 41, so that the amount of exhaust is adjusted by replacing the sealing sheet 7. The sealing sheet 7 is low in price, so that the change of the exhaust amount can be realized without replacing the arc extinguishing cover 4.

As shown in fig. 4, the arc extinguish chamber bracket 8 is a frame structure, the interior of the frame structure is used for accommodating the flame extinguishing assembly 5 and the deionization assembly 6, and two sides of the frame structure are used for mounting the side wall 1. And the arc extinguishing grid pieces 2 in an array are arranged below the arc extinguishing chamber bracket 8. The arc extinguishing grid pieces 2 and the gas generating pieces 100 are fixedly arranged on the inner sides of the pair of side walls 1.

As shown in fig. 4 and 10, the lower portion of the arc extinguish chamber bracket 8 is sleeved with a sealing ring 9, when the arc extinguish chamber is installed in the arc extinguish chamber accommodating cavity of the substrate, the sealing ring 9 can seal a gap between the arc extinguish chamber and the arc extinguish chamber accommodating cavity, so that gas in the substrate is prevented from being discharged outwards from the gap, and the gas sealing in the substrate is improved.

As shown in fig. 4 to 6, the arc extinguish chamber bracket 8 includes a bracket inner cavity 81, and the bracket inner cavity 81 is used for accommodating the flame extinguishing assembly 5 and the deionization assembly 6. The lower end of the support inner cavity 81 is provided with a circle of placing part 811, the placing part 811 is a circle of protrusion, and the flame extinguishing component 5 and the deionization component 6 are placed on the placing part 811. The arc extinguish chamber bracket 8 is provided with matching installation parts 82 on two sides corresponding to the side wall 1. Preferably, the fitting installation portion 82 is a protrusion, the sidewall 1 is provided with a corresponding hole 11, and the fitting installation portion 82 is embedded into the hole 11 of the sidewall 1 to realize the positioning installation of the fitting installation portion and the sidewall 1.

As shown in fig. 3, 5 and 6, a fool-proof structure 83 is disposed on the inner side wall of the inner cavity 81 of the bracket, and the fool-proof structure 83 is used for corresponding to the mesh plate 51, so that different mesh plates 51 can be placed according to the design requirements. In this embodiment, the fool-proof structure 83 is a protrusion, and correspondingly, corresponding pits are provided on different mesh plates 51, and the protrusion is matched with the pits to prevent incorrect installation.

Referring to fig. 8 and 9, the mesh plate 51 includes a first mesh plate 511 and a second mesh plate 512. The first orifice plate 511 has first air holes 5111 and a first pit 5112 arranged in an array. Wherein the first concave pit 5112 is offset to one side of the midline of the first orifice plate 511. The second orifice plate 512 has second air holes 5121 and a second pit 5122 arranged in an array. Wherein the second concave pit 5122 is located on the centerline of the second orifice plate 512. Since the first and second recesses 5112 and 5122 are located at different positions, when the fool-proof structure 83 is combined, the first and second orifice plates 511 and 512 can be installed differently, thereby preventing the incorrect installation.

With continued reference to fig. 5 and 6, the arc extinguish chamber bracket 8 further comprises a lifting part 200 for an operator to grasp, the lifting part 200 is located at two sides of the arc extinguish chamber, and the lifting part 200 is of a concave structure in the embodiment, so that the operator can grasp fingers conveniently. In the present embodiment, the lifting portion 200 is located on the arc extinguishing chamber bracket 8, but it is also feasible to locate it on other components of the arc extinguishing chamber without departing from the scope of the invention, for example, the lifting portion 200 is located on the top surface of the arc extinguishing chamber, i.e. on the top surface of the arc extinguishing cover 4. In this embodiment, the lifting portion 200 is located on two sides of the arc extinguishing chamber bracket 8, preferably two on each side. Of course, the above-mentioned solution should be taken as a preferred solution, and it is also feasible if the lifting part 200 is located on the front and back surfaces of the arc extinguish chamber, and the invention should also belong to the protection scope of the present invention.

As shown in fig. 2 to 6, the arc extinguish chamber bracket 8 is further provided with a mounting hole 85, and the mounting hole 85 is used for matching with the arc extinguish cover 4 to complete the mounting of the arc extinguish cover 4 and the arc extinguish chamber bracket 8, and for the mounting and fixing between the arc extinguish chamber and the substrate.

As shown in fig. 7, the sealing plate 7 is usually made of rubber and has a through hole 72 in addition to the second vent hole 71, and the through hole 72 is used for passing a screw. The sealing piece 7 further comprises a releasing part 73, and the releasing part 73 corresponds to the shape of the lifting part 200.

As shown in fig. 10, the sealing ring 9 is frame-shaped and is sleeved on the lower end of the arc-extinguishing chamber bracket 8, and when the arc-extinguishing chamber is installed in the arc-extinguishing chamber accommodating cavity on the top of the substrate, the sealing ring 9 seals the gap between the arc-extinguishing chamber and the arc-extinguishing chamber accommodating cavity. A recess 91 is provided on the edge of the sealing ring 9 for releasing the screw.

Fig. 11 and 12 are schematic views of another embodiment. The lifting part 200 is located at the top of the arc extinguishing chamber, namely, on the top surface of the arc extinguishing cover 4. The lifting portion 200 may be a protrusion, and a recess is formed on the protrusion for facilitating the lifting of the operator.

In this embodiment, the lifting portion 200 is hook-shaped and can be accommodated in the arc extinguishing cover 4. Specifically, the carrying unit 200 is rotated to accommodate or remove the carrying unit. The lifting part 200 is provided with a groove part 201 for lifting. When in use, the lifting part 200 is rotated out for lifting; when not in use, the arc extinguishing chamber is rotated into the concave cavity on the arc extinguishing chamber 4.

Claims (10)

1. The utility model provides an explosion chamber of circuit breaker, the circuit breaker includes the base member, is equipped with contact system in the base member, the base member have an opening that is located the top, explosion chamber put into from the opening part the base member in, and with the base member fixed, its characterized in that: the explosion chamber is still including carrying by portion (200), carry and be convenient for the operator to snatch the explosion chamber by portion (200).

2. Arc chute of a circuit breaker according to claim 1, characterized in that: the arc extinguishing chamber include a pair of lateral wall (1), arc extinguishing bars piece (2), arc extinguishing lid (4), arc extinguishing bars piece (2) array between a pair of lateral wall (1), arc extinguishing lid (4) install the top at the arc extinguishing chamber.

3. Arc chute of a circuit breaker according to claim 1, characterized in that: the lifting and holding part (200) is positioned on two sides of the arc extinguish chamber, and the lifting and holding part (200) is of a concave structure.

4. Arc chute of a circuit breaker according to claim 1, characterized in that: the lifting part (200) is positioned on the top surface of the arc extinguish chamber.

5. Arc chute of a circuit breaker according to claim 2, characterized in that: the explosion chamber still include an explosion chamber support (8), a pair of lateral wall (1) install the both sides at explosion chamber support (8), arc extinguishing cover (4) install the top at explosion chamber support (8), carry and be located explosion chamber support (8) by portion (200).

6. Arc chute of a circuit breaker according to claim 5, characterized in that: the explosion chamber still including the subassembly (5) of putting out a flame and the subassembly (6) that frees that disappears, explosion chamber support (8) including holding the support inner chamber (81) of the subassembly (5) of putting out a flame and the subassembly (6) that frees that disappears.

7. An arc chamber of a circuit breaker according to claim 6, characterized in that: flame-out subassembly (5) include mesh plate (51) and gasket (52), mesh plate (51) and gasket (52) be one and separate a range upon range of setting, mesh plate (51) include first orifice plate (511) and second orifice plate (512) the inside wall of support inner chamber (81) on be equipped with prevent slow-witted structure (83), prevent slow-witted structure (83) and be used for distinguishing the installation first orifice plate (511) and second orifice plate (512).

8. Arc chute of a circuit breaker according to claim 7, characterized in that: the first pore plate (511) is provided with first air holes (5111) and first pits (5112) which are arranged in an array, and the first pits (5112) are offset to one side of the midline of the first pore plate (511).

9. Arc chute of a circuit breaker according to claim 7, characterized in that: the second pore plate (512) is provided with second air holes (5121) and a second pit (5122) which are arranged in an array mode, and the second pit (5122) is located on the central line of the second pore plate (512).

10. Arc chute of a circuit breaker according to claim 2, characterized in that: the lifting part (200) is hook-shaped and can be accommodated in the arc extinguishing cover (4), and a groove part (201) for lifting is arranged on the lifting part (200).

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