Arc shielding device of high-voltage electrical cabinet

Abstract

The utility model discloses an arc shielding device for a high-voltage electrical cabinet, and the device comprises a top arc extinguishing shield plate which is horizontally disposed in the high-voltage electrical cabinet; the two side arc extinguishing shield plates are arranged in parallel and are fixedly arranged at the lower part of the top arc extinguishing shield plate; the arc-extinguishing partition plate mounting column is vertically arranged between the two side arc-extinguishing shield plates, the top of the arc-extinguishing partition plate mounting column and the top arc-extinguishing shield plate mutually fix a plurality of arc-extinguishing partition plates, and the arc-extinguishing partition plates are arranged on the arc-extinguishing partition plate mounting column in a splayed shape; the plurality of gas guide pipes are vertically arranged between the two side arc extinguishing shield plates, and a plurality of gas guide holes are uniformly distributed in the gas guide pipes; wherein the top gas outlet end of the gas guide pipe is arranged outside the top arc extinguishing shield plate and is used for exhausting gas.

Description

Technical Field

[0001] The utility model relates to the technical field of arc shielding equipment, in particular to an arc shielding device for a high-voltage electrical cabinet. Background Art

[0002] Arc is a gas discharge phenomenon, which is an instantaneous spark produced by current passing through certain insulating media such as air. Arc shielding device is a very important component in high-voltage electrical cabinets. The fundamental reason for arc generation is that the switch contacts themselves and the medium around the contacts contain a large number of free electrons. When the arc contacts are disconnected, if there is a large enough voltage between the contacts and the circuit current reaches the minimum arc current, the above-mentioned free electrons will be stimulated to form an arc. The formed arc can easily cause a short circuit or damage to the circuit, so an arc shielding device is needed to eliminate the arc.

[0003] There is a common technical defect in the arc shielding devices of high-voltage electrical cabinets currently on the market. That is, it is difficult to quickly dissipate the gas generated by the arc phenomenon, causing these gases to easily accumulate inside the electrical cabinet and affect the normal use of electrical components. Utility Model Content

[0004] In view of the above technical problems, the utility model provides an arc shielding device for a high-voltage electrical cabinet.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] An arc shielding device for a high-voltage electrical cabinet, comprising:

[0007] The top arc extinguishing cover plate is horizontally arranged in the high-voltage electrical cabinet;

[0008] Two side arc extinguishing cover plates arranged parallel to each other are fixedly mounted on the lower part of the top arc extinguishing cover plate;

[0009] The arc chute mounting column is vertically arranged between the two side arc chute plates, and the top of the column is fixed to the top arc chute plate;

[0010] A plurality of arc-extinguishing chute plates are arranged in an eight-shaped shape on the arc-extinguishing chute plate mounting column;

[0011] A plurality of gas guide pipes are vertically arranged between two side arc extinguishing cover plates, and a plurality of gas guide holes are evenly distributed on the gas guide pipes;

[0012] Wherein, the top gas outlet end of the gas guide pipe is arranged outside the top arc extinguishing cover plate for discharging gas externally.

[0013] The utility model also includes a support plate, which is horizontally installed at the bottom of the arc extinguishing partition installation column, and is provided with installation thread grooves with the same number as the gas guide pipes. The bottom thread of the gas guide pipe is installed in the installation thread groove.

[0014] The utility model also includes a plurality of fixing components, which are arranged on the arc chute mounting column from top to bottom, and the fixing components are in contact with one end of the arc chute, and are used to position the one end of the arc chute; the fixing components include:

[0015] Two fixing blocks are respectively arranged on both sides of the arc chute mounting column, and the two fixing blocks are both transversely provided with a third mounting threaded hole, and the third mounting threaded hole corresponds to the second mounting threaded hole transversely provided on the arc chute mounting column;

[0016] The fastening screw passes horizontally through the arc chute mounting column from one side fixing block, is inserted into the other side fixing block, and is threadedly connected with the second mounting threaded hole and the third mounting threaded hole, so that the two fixing blocks can be fixed on the arc chute mounting column.

[0017] The gas guide pipe is transversely provided with a plurality of mounting through holes, one end of the arc chute is overlapped on the fixing block, and the other end is inserted into the mounting through hole, so that the arc chute can be stably arranged on the arc chute mounting column.

[0018] An auxiliary heat dissipation mesh plate is arranged at the center of the top arc-extinguishing cover plate, and the auxiliary heat dissipation mesh plate is provided with first mounting threaded holes whose number is consistent with that of the gas guide pipe, and the top outer wall of the gas guide pipe is threadedly connected with the first mounting threaded holes.

[0019] The beneficial effect of the utility model is as follows: the utility model provides installation through holes, gas guide tubes and gas guide holes. When an arc effect occurs inside the electrical cabinet, the gas generated by the gas guide tubes will enter the gas guide tubes through the several gas guide holes provided on the gas guide tubes, thereby being able to efficiently dissipate the gas generated by the arc. Moreover, by providing a support plate, an installation thread groove, a first external fixing thread, a second external fixing thread, a first installation thread hole, a fixing block, a fastening screw, a third installation thread hole and a second installation thread hole, the arc extinguishing baffle can be conveniently and detachably connected to the arc extinguishing baffle mounting column, and the gas guide tube can also be detachably connected to the auxiliary heat dissipation mesh plate, thereby improving the convenience of installation and disassembly of the arc shielding device of the high-voltage electrical cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 for Figure 1 A magnified view of point A.

[0023] In the figure: 1. top arc-extinguishing cover plate; 2. mounting through hole; 3. gas guide hole; 4. arc-extinguishing baffle; 5. gas guide pipe; 6. auxiliary heat dissipation mesh plate; 7. first mounting threaded hole; 8. arc-extinguishing baffle mounting column; 9. side arc-extinguishing cover plate; 10. fixing block; 11. fastening screw; 12. second mounting threaded hole; 13. third mounting threaded hole; 14. support plate; 15. mounting threaded groove. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0025] like Figure 1 As shown, an arc shielding device for a high-voltage electrical cabinet comprises: a top arc-extinguishing cover plate 1, which is horizontally arranged in the high-voltage electrical cabinet; two side arc-extinguishing cover plates 9 arranged parallel to each other, which are fixedly installed at the lower part of the top arc-extinguishing cover plate 1; an arc-extinguishing baffle mounting column 8, which is vertically arranged between the two side arc-extinguishing cover plates 9, and the top of which is fixed to the top arc-extinguishing cover plate 1; a plurality of arc-extinguishing baffles 4, which are arranged in an eight-shaped shape on the arc-extinguishing baffle mounting column 8; a plurality of gas guide pipes 5, which are vertically arranged between the two side arc-extinguishing cover plates 9, and a plurality of gas guide holes 3 are evenly distributed on the gas guide pipes 5; wherein, the top gas outlet end of the gas guide pipe 5 is arranged outside the top arc-extinguishing cover plate 1 for exhausting gas.

[0026] like Figure 1 As shown, the utility model also includes a support plate 14, which is horizontally installed at the bottom of the arc extinguishing partition mounting column 8, and is provided with mounting thread grooves 15 with the same number as the gas guide pipes 5. The bottom of the gas guide pipe 5 is threadedly installed in the mounting thread groove 15.

[0027] like Figure 1 and Figure 2As shown, the utility model also includes a plurality of fixing components, which are arranged on the arc chute mounting column 8 from top to bottom, and the fixing components are in contact with one end of the arc chute 4, and are used to position one end of the arc chute 4; the fixing components include: two fixing blocks 10, which are respectively arranged on both sides of the arc chute mounting column 8, and the two fixing blocks 10 are both transversely provided with third mounting threaded holes 13, and the third mounting threaded holes 13 are corresponding to the second mounting threaded holes 12 transversely provided on the arc chute mounting column 8; a fastening screw 11, which transversely passes through the arc chute mounting column 8 from the fixing block 10 on one side, is inserted into the fixing block 10 on the other side, and is threadedly connected with the second mounting threaded hole 12 and the third mounting threaded hole 13, so that the two fixing blocks 10 can be fixed on the arc chute mounting column 8.

[0028] like Figure 1 As shown, a plurality of mounting holes 2 are transversely arranged on the gas guide pipe 5, one end of the arc extinguishing clapboard 4 is overlapped on the fixing block 10, and the other end is inserted into the mounting hole 2, so that the arc extinguishing clapboard 4 can be stably arranged on the arc extinguishing clapboard mounting column 8.

[0029] like Figure 1 As shown, an auxiliary heat dissipation mesh plate 6 is arranged at the center of the top arc-extinguishing cover plate 1, and the auxiliary heat dissipation mesh plate 6 is provided with first mounting threaded holes 7 whose number is consistent with that of the gas guide pipe 5, and the top outer wall of the gas guide pipe 5 is threadedly connected with the first mounting threaded holes 7.

[0030] During the specific implementation of the utility model, after a plurality of arc extinguishing chute plates 4 are fixedly connected to the outer side of the arc extinguishing chute plate mounting column 8 by means of a fixing assembly, the two gas guide tubes 5 can be inserted into the first mounting threaded hole 7 provided on the auxiliary heat dissipation mesh plate 6, and the gas guide tubes 5 are sequentially passed through the interior of a plurality of mounting through holes 2 until one end of the gas guide tube 5 abuts against the support plate 14, and then the gas guide tube 5 is rotated so that one end of the gas guide tube 5 is rotated into the mounting threaded groove 15 provided on the surface of the support plate 14, and the gas guide tube 5 is stably connected to the surface of the support plate 14 through the cooperation of the second external fixing thread and the mounting threaded groove 15, and in the process of the gas guide tube 5 being rotated into the mounting threaded groove 15, the upper portion of the outer side of the gas guide tube 5 is The first external fixing thread opened will also be engaged and connected with the inside of the first mounting threaded hole 7, so that the gas guide tube 5 can be stably connected to the auxiliary heat dissipation mesh plate 6 and the support plate 14, and when an arc effect occurs inside the electrical cabinet, the gas generated will enter the gas guide tube 5 through the several gas guide holes 3 opened on the gas guide tube 5, and be discharged from the arc shielding device of the high-voltage electrical cabinet through the gas guide tube 5. Through this gas dispersion method, the gas generated by the arc can be efficiently dissipated, thereby improving the arc shielding effect of the arc shielding device of the high-voltage electrical cabinet, and by detachably connecting the gas guide tube 5 to the auxiliary heat dissipation mesh plate 6 and the support plate 14, the convenience of installation and disassembly of the arc shielding device of the high-voltage electrical cabinet is improved.

[0031] like Figure 1 and Figure 2 As shown, in one embodiment of the utility model, the fixing assembly includes: a plurality of second mounting threaded holes 12, which are equidistantly arranged on the surface of the arc extinguishing baffle mounting column 8, and a fixing block 10 is connected to the outer side of the arc extinguishing baffle 4, and a third mounting threaded hole 13 is arranged on the side of the fixing block 10, and a fastening screw 11 is meshedly connected inside the third mounting threaded hole 13, and the fastening screw 11 passes through the inside of the third mounting threaded hole 13 and the second mounting threaded hole 12 in sequence, and the fixing block 10 is stably connected to the outer side of the arc extinguishing baffle mounting column 8 through the cooperation of the fastening screw 11, the third mounting threaded hole 13 and the second mounting threaded hole 12, and the side of the arc extinguishing baffle 4 and the side of the fixing block 10 are tightly attached to the surface of the arc extinguishing baffle mounting column 8.

[0032] In this embodiment, when it is necessary to stably connect the arc extinguishing clapboard 4 to the arc extinguishing clapboard mounting column 8, first hold the arc extinguishing clapboard 4, and tightly fit the side of the arc extinguishing clapboard 4 against the surface of the arc extinguishing clapboard mounting column 8, and align the third mounting threaded hole 13 opened on the fixing block 10 connected to the arc extinguishing clapboard 4 with the second mounting threaded hole 12 opened on the arc extinguishing clapboard mounting column 8, and then the staff turns the fastening screw 11 into the third mounting threaded hole 13 and the second mounting threaded hole 12 in turn, so as to stably fix the fixing block 10 and the arc extinguishing clapboard 4 on the outside of the arc extinguishing clapboard mounting column 8.

[0033] The working method of the utility model is as follows: when an arc phenomenon occurs in the electrical components in the electrical cabinet, the gas generated by the gas will enter the gas guide pipe 5 through the several gas guide holes 3 opened on the gas guide pipe 5, and be discharged from the arc shielding device of the high-voltage electrical cabinet through the gas guide pipe 5, and the arc will be isolated by the several arc extinguishing partitions 4 arranged on the outside of the arc extinguishing partition mounting column 8. At the same time, the heat generated by the arc can also be quickly dissipated, and when it is necessary to assemble the various components in the arc shielding device of the high-voltage electrical cabinet, first, the side surfaces of the several arc extinguishing partitions 4 are tightly attached to the surface of the arc extinguishing partition mounting column 8, and the third mounting threaded hole 13 opened on the fixing block 10 connected to the arc extinguishing partition 4 is aligned with the second mounting threaded hole 12 opened on the arc extinguishing partition mounting column 8, and then the staff will turn the fastening screw 11 into the inside of the third mounting threaded hole 13 and the second mounting threaded hole 12 in turn, so as to fix The fixed block 10 and the arc extinguishing baffle 4 are stably fixed on the outer side of the arc extinguishing baffle mounting column 8, and then the two gas guide tubes 5 are inserted into the first mounting threaded hole 7 opened on the auxiliary heat dissipation mesh plate 6, and the gas guide tubes 5 are passed through the inside of several mounting through holes 2 in sequence until one end of the gas guide tube 5 is against the support plate 14, and then the gas guide tube 5 is rotated so that one end of the gas guide tube 5 is turned into the inside of the mounting thread groove 15 opened on the surface of the support plate 14, and the gas guide tube 5 will be stably connected to the surface of the support plate 14 through the cooperation of the second external fixing thread and the mounting thread groove 15, and in the process of the gas guide tube 5 turning into the mounting thread groove 15, the first external fixing thread opened on the upper outer part of the gas guide tube 5 will also be meshed and connected with the inside of the first mounting threaded hole 7, so that the gas guide tube 5 can be stably connected to the auxiliary heat dissipation mesh plate 6 and the support plate 14.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An arc shielding device for a high voltage electrical cabinet, characterized in that: include: A top arc extinguishing cover plate (1) is horizontally arranged in the high-voltage electrical cabinet; Two side arc extinguishing cover plates (9) arranged parallel to each other are fixedly mounted on the lower part of the top arc extinguishing cover plate (1); An arc chute mounting column (8) is vertically arranged between two side arc chute plates (9), and a top portion thereof is fixed to the top arc chute plate (1); A plurality of arc-extinguishing chute plates (4) are arranged in an eight-shaped pattern on an arc-extinguishing chute plate mounting column (8); A plurality of gas guide pipes (5) are vertically arranged between two side arc extinguishing cover plates (9), and a plurality of gas guide holes (3) are evenly distributed on the gas guide pipes (5); The top gas outlet end of the gas guide pipe (5) is arranged outside the top arc extinguishing cover plate (1) for discharging gas.

2. The arc shielding device of a high-voltage electrical cabinet according to claim 1, characterized in that: It also comprises a support plate (14) which is horizontally mounted on the bottom of the arc extinguishing chute mounting column (8), on which mounting thread grooves (15) whose number is the same as the number of the gas guide tubes (5) are provided, and the bottom of the gas guide tube (5) is threadedly mounted in the mounting thread groove (15).

3. The arc shielding device of a high-voltage electrical cabinet according to claim 1, characterized in that: It also includes a plurality of fixing components, which are arranged on the arc chute mounting column (8) from top to bottom, and the fixing components are in contact with one end of the arc chute (4) and are used to position the one end of the arc chute (4); the fixing components include: Two fixing blocks (10) are respectively arranged on both sides of the arc chute mounting column (8), and third mounting threaded holes (13) are transversely arranged on the two fixing blocks (10), and the third mounting threaded holes (13) correspond to the second mounting threaded holes (12) transversely arranged on the arc chute mounting column (8); The fastening screw (11) is passed horizontally from the fixing block (10) on one side through the arc chute mounting column (8), inserted into the fixing block (10) on the other side, and threadedly connected with the second mounting threaded hole (12) and the third mounting threaded hole (13), so that the two fixing blocks (10) can be fixed on the arc chute mounting column (8).

4. The arc shielding device for a high-voltage electrical cabinet according to claim 3, characterized in that: A plurality of mounting through holes (2) are transversely arranged on the gas guide pipe (5); one end of the arc extinguishing chopper (4) is overlapped on the fixing block (10) and the other end is inserted into the mounting through hole (2), so that the arc extinguishing chopper (4) can be stably arranged on the arc extinguishing chopper mounting column (8).

5. The arc shielding device for a high-voltage electrical cabinet according to claim 1, characterized in that: An auxiliary heat dissipation mesh plate (6) is arranged at the center of the top arc extinguishing cover plate (1), and the auxiliary heat dissipation mesh plate (6) is provided with first mounting threaded holes (7) whose number is consistent with that of the gas guide pipe (5), and the top outer wall of the gas guide pipe (5) and the first mounting threaded holes (7) are threadedly connected to each other.

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