Dual-power arc extinguishing device

Abstract

The utility model relates to the technical field of low-voltage power equipment, and discloses a dual-power arc-extinguishing device, which comprises a bottom plate, arc-extinguishing assemblies distributed in an array are fixed on the bottom plate, and a supporting partition plate is fixedly arranged between every two adjacent arc-extinguishing assemblies; the arc extinguishing assembly comprises two shells, the shells are fixedly connected with the side faces of the supporting partition plates in an inserted mode, clamping grooves are fixedly formed in the shells, arc extinguishing plates distributed in an array mode are fixedly arranged in the clamping grooves, run-on plates are fixedly arranged in the shells, and an extension plate is fixedly arranged between the two shells. According to the utility model, the structure of the arc extinguish chamber is improved, the assembled shell is adopted for installation, and the shell is independently produced and manufactured, can be directly assembled and then applied to dual-power supply equipment, can be additionally provided with an extension plate, can be applied to large-current dual-power supply equipment, and is simple to produce, assemble and operate, and the assembled arc extinguish assembly is reliable in structure; rapid arc striking and arc extinguishing are carried out on an electric arc, the inter-phase insulation performance is improved through the hole plug and the clamping structure, and the arc extinguishing safety of the adjacent arc extinguishing assemblies is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage power equipment, in particular to a dual-power arc extinguishing device. Background Art

[0002] At present, dual power automatic transfer switch electrical appliances are widely used in power systems, among which the arc extinguishing device is an important component of the transfer switch electrical appliances; its main function is to quickly attract, split and cool the high-temperature arc generated when the electrical contacts are switched under load. At the same time, the grid will also absorb the metal particles ejected by the high-temperature arc, shorten the arc burning time, and reduce damage to the electrical contacts and circuits.

[0003] In the prior art, the name disclosed in application number: CN201910925491.3 is: a dual-power arc extinguishing device, wherein the arc extinguishing chamber assembly includes a chamber shell, a left arc extinguishing chamber, a right arc extinguishing chamber and multiple breaks, the left arc extinguishing chamber is fixedly installed on the left side of the inner wall of the chamber shell, the right arc extinguishing chamber is fixedly installed on the right side of the inner wall of the chamber shell, and the inner walls of the left arc extinguishing chamber and the right arc extinguishing chamber are fixedly installed with multiple breaks.

[0004] However, the arc extinguishing chamber structure mentioned in the prior art is fixed. However, in dual-power supply high-current equipment, a large-volume arc extinguishing chamber is required. The traditional arc extinguishing chamber structure cannot be applied to the corresponding high-current dual-power supply equipment. The development and design of the new arc extinguishing chamber requires investment in molds and high costs. Therefore, it is necessary to design a dual-power supply arc extinguishing device. Utility Model Content

[0005] The purpose of the utility model is to provide a dual-power arc extinguishing device to solve the problems in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A dual-power arc extinguishing device, comprising a base plate, on which arc extinguishing components distributed in an array are fixed, and supporting partitions are fixed between adjacent arc extinguishing components;

[0008] The arc extinguishing assembly includes two assembled shells, which are plugged and fixed to the side of the supporting partition. A card slot is fixed in the shell, and an array of arc extinguishing plates are fixed in the card slot. An arc striking plate is fixed in the shell, and an extension plate for increasing the width of the arc extinguishing device is fixed between the two shells.

[0009] Furthermore, a slot is provided on the bottom plate, and an inserting plate is fixedly connected to the shell, and the inserting plate is fixed in cooperation with the slot.

[0010] Furthermore, an open slot is provided on the shell, and an arc-starting plate for guiding the arc into the arc-extinguishing device is located on one side of the plurality of arc-extinguishing plates.

[0011] Furthermore, one side of the extension plate is fixed with symmetrically distributed protrusions, and the other side is symmetrically provided with grooves. The two shells are respectively provided with protrusions and grooves. The protrusions on the extension plate cooperate with the grooves on one shell, and the grooves on the extension plate cooperate with the protrusions on the other shell.

[0012] Furthermore, a screw for connecting and fixing the arc extinguishing device is fixed on the support partition, and a hole plug for reducing interphase arc is installed on the support partition.

[0013] Furthermore, the housing is provided with ventilation grooves for heat dissipation.

[0014] Beneficial effects of the utility model:

[0015] 1. The dual-power arc extinguishing device of the utility model improves the structure of the arc extinguishing chamber and adopts an assembled shell for installation. The shell is manufactured separately and has high adaptability. It can be directly assembled and applied to dual-power equipment. After assembling an extension plate between the two shells, it can form an arc extinguishing device for high-current dual-power equipment, reducing production costs.

[0016] 2. The dual-power arc extinguishing device of the utility model has a simple structure and is applied to dual-power equipment. It is simple to produce and assemble, and the assembly operation is simple. The assembled arc extinguishing component has a reliable structure and can quickly strike and extinguish the arc. The interphase insulation performance is improved by the hole plug and the clamping structure, thereby improving the arc extinguishing safety of adjacent arc extinguishing components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of the dual power arc extinguishing device of the utility model;

[0019] Figure 2 It is a structural diagram of the arc extinguishing device of the utility model;

[0020] Figure 3 This is a schematic diagram of the explosion structure of the arc extinguishing device of the utility model;

[0021] Figure 4 This is a schematic diagram of the explosion structure of the arc extinguishing device of the utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the arc extinguishing device of the present invention;

[0023] Figure 6 This is a partial structural diagram of the arc extinguishing device of the utility model;

[0024] Figure 7 It is a structural diagram of the bottom plate of the utility model. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] A dual power arc extinguishing device, such as Figure 1 、 Figure 7 As shown, the dual power arc extinguishing device includes a base plate 9, a slot 11 is opened on the base plate 9, an array of arc extinguishing components are fixedly installed on the base plate 9, and a supporting partition 3 is fixed between adjacent arc extinguishing components. The arc extinguishing component includes two shells 7, and the shells 7 are plugged and fixed to the sides of the supporting partitions 3. A plug-in board 15 is fixedly connected to the shell 7, and the plug-in board 15 cooperates with the slot 11 to fix the arc extinguishing component.

[0027] like Figure 2-6 As shown, an open slot 12 is provided on the shell 7, and the driving component of the dual power supply device passes through the open slot 12, and a card slot is fixed in the shell 7, and an array of arc extinguishing plates 4 are fixed in the card slot, and an arc striking plate 5 is fixed in the shell 7, and the arc striking plate 5 introduces the arc between several arc extinguishing plates 4 to extinguish the arc. An extension plate 6 is fixed between the two shells 7, and symmetrically distributed protrusions 13 are fixed on one side of the extension plate 6, and symmetrically distributed grooves 14 are provided on the other side. The two shells 7 located on both sides of the extension plate 6 are respectively provided with protrusions 13 and grooves 14.

[0028] A screw rod 8 is fixedly installed on the supporting partition 3. The screw rod 8 passes through the partition, the extension plate 6 and the shell 7 and is fixedly connected to the nut 2. The nut 2 is threadedly connected to the screw rod 8 to lock the arc extinguishing assembly located between the two supporting partitions 3 to form a dual power supply arc extinguishing device, and a hole plug 1 is installed on the supporting partition 3.

[0029] The protrusion 13 on the extension plate 6 cooperates with the groove 14 on one shell 7, and the groove 14 on the extension plate 6 cooperates with the protrusion 13 on the other shell 7. After the two shells 7 and the extension plate 6 are assembled, the screw 8 passes through the protrusion 13 and the groove 14 and is threadedly connected to the nut 2.

[0030] Both shells 7 are provided with ventilation grooves 10. When the two shells 7 are assembled together, the ventilation grooves 10 on the two shells 7 are connected to each other for dissipating heat inside the arc extinguishing assembly. If the two shells 7 are assembled on both sides of the extension plate 6, the ventilation grooves 10 are located on both sides of the extension plate 6, which can also achieve heat dissipation of the arc extinguishing assembly. By fixing the extension plate 6 between the two shells 7, the size of the arc extinguishing assembly can be expanded through the extension plate 6 according to the volume requirements of the dual power supply equipment.

[0031] Here's how it works:

[0032] In the dual power supply of the actual high current contact structure, the arc extinguishing chamber is usually not universal when using the high current dual power arc extinguishing device, which easily leads to the arc extinguishing chamber being produced and designed separately, the production design process is cumbersome, and the mold investment and cost are high.

[0033] At the same time, the arc extinguishing chamber usually does not meet the needs of large-current dual-power supply equipment, and the cost of producing it separately is high, so an assembled structure is designed. It is assembled through two shells 7 and an extension plate 6. The adjacent current shells are designed to adapt to the use of various large-current dual-power supply equipment. It is connected to the slot 11 through the plug-in board 15 to avoid arc short-circuiting between phases during disconnection, and at the same time increase the creepage distance.

[0034] Fix the arc extinguishing assembly to ensure the phase-to-phase insulation performance, and at the same time support the partition 3 to support the driving shaft in the high-current dual power supply, and separate the arc extinguishing assembly. When in the first high current gear, add a set of extension plates 6 to widen the width of the arc extinguishing assembly and increase the arc extinguishing width of the dual power supply arc extinguishing device.

[0035] The hole plug 1 is installed on the shell 7 to prevent the screws from loosening and arcing between adjacent poles through the gap to conduct the screws of the adjacent poles, forming a short circuit; the protrusion 13 cooperates with the groove 14 to prevent the arc from passing through the gap. The design of the arc extinguishing chambers of adjacent current frames takes into account the assembled structure, optimizes the installation and fixation of the arc extinguishing chambers, and ensures the insulation performance between phases; the plug-in ribs form an interlaced channel to improve the protection of the exhaust grid.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A dual power arc extinguishing device, comprising a bottom plate (9), characterized in that: Arc extinguishing components distributed in an array are fixed on the bottom plate (9), and supporting partitions (3) are fixed between adjacent arc extinguishing components; The arc extinguishing assembly comprises two assembled shells (7), the shells (7) being plugged and fixed to the side surfaces of the supporting partition (3), a card slot being fixedly provided in the shell (7), arc extinguishing plates (4) distributed in an array being fixedly provided in the card slot, an arc striking plate (5) being fixedly provided in the shell (7), and an extension plate (6) for increasing the width of the arc extinguishing device being fixedly provided between the two shells (7).

2. A dual power arc extinguishing device according to claim 1, characterized in that: The bottom plate (9) is provided with a slot (11), and the housing (7) is fixedly connected with an inserting plate (15), which is fixed in cooperation with the slot (11).

3. A dual power arc extinguishing device according to claim 1, characterized in that: The housing (7) is provided with an open slot (12), and an arc-starting plate (5) for guiding the arc into the arc-extinguishing device is located on one side of the plurality of arc-extinguishing plates (4).

4. A dual power arc extinguishing device according to claim 1, characterized in that: One side of the extension plate (6) is fixed with symmetrically distributed protrusions (13), and the other side is symmetrically provided with grooves (14). The two shells (7) are respectively provided with protrusions (13) and grooves (14). The protrusions (13) on the extension plate (6) cooperate with the grooves (14) on one shell (7), and the grooves (14) on the extension plate (6) cooperate with the protrusions (13) on the other shell (7).

5. The dual power arc extinguishing device according to claim 1, characterized in that: A screw (8) for connecting and fixing an arc extinguishing device is fixed on the support partition (3), and a hole plug (1) for reducing interphase arc is installed on the support partition (3).

6. A dual power arc extinguishing device according to claim 1, characterized in that: The housing (7) is provided with ventilation grooves (10) for heat dissipation.

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