Environment-friendly gas insulation high-voltage cabinet

Abstract

The utility model relates to the technical field of high-voltage cabinets, in particular to an environment-friendly gas-insulated high-voltage cabinet, which comprises a cabinet body, a transverse partition plate is arranged at a position close to the top in the cabinet body, a sealing door is hinged to the front side of the cabinet body, and ventilation openings are formed in the cabinet body on the front side and the rear side of a cavity above the transverse partition plate; the top of the transverse partition is fixedly connected with an air pump; a longitudinal partition plate vertically connected to the bottom of the cabinet body is arranged at the position, close to the left end, of the bottom of the transverse partition plate, air outlets are evenly formed in the middle of the longitudinal partition plate at intervals, and annular grooves are formed in the periphery of the air outlets in the left side of the longitudinal partition plate. The right side of the longitudinal partition plate is a gas storage cavity, and the left side of the longitudinal partition plate is a gas release cavity. An air outlet is formed in the cabinet body in the middle of the left side of the air release cavity; an air leakage assembly used for preventing expansion air in the air storage cavity from being erupted is arranged in the annular groove. According to the utility model, the phenomenon that the cabinet body is broken due to high pressure is effectively avoided by arranging the air leakage assembly, and the air leakage assembly is simple in structure, small in occupied space, economical and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage cabinets, in particular to an environmentally friendly gas-insulated high-voltage cabinet. Background Art

[0002] Environmentally friendly gas-insulated high-voltage cabinet is a new type of high-voltage switchgear with good environmental performance and high reliability. It is widely used in medium-voltage and high-voltage distribution equipment and power capacitors in power systems. It adopts gas insulation technology and uses compressed gas as the insulating medium. The distance between all live parts in the cabinet and the cabinet shell is very small. There is no busbar and insulator. The traditional components such as cables, busbars and insulators are cancelled, and the miniaturization and compactness of high-voltage equipment are realized, making the structure inside the cabinet more compact, safe and beautiful. During use, the components of the environmentally friendly gas-insulated high-voltage cabinet are encapsulated in a metal shell filled with SF6 gas at a certain pressure. A Chinese patent discloses an environmentally friendly gas-insulated high-voltage switchgear. (Authorization Announcement No. CN219779429U). This patented technology can prevent the arcs generated by high-voltage electricity from contacting each other during operation by setting an adjustable insulating plate between multiple high-voltage connecting lines, thereby reducing internal safety hazards. However, when the gas inside the high-voltage cabinet is arcing, the cabinet body is prone to rupture due to the failure to discharge the energy of the expanding gas in time, resulting in reduced cabinet insulation. Therefore, those skilled in the art provide an environmentally friendly gas-insulated high-voltage cabinet to solve the problems raised in the above background technology. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an environmentally friendly gas-insulated high-voltage cabinet, comprising a cabinet body, a transverse partition is provided near the top of the cabinet body, a sealing door is hinged on the front side of the cabinet body, and ventilation holes are provided on the cabinet body at the front and rear sides of the cavity above the transverse partition;

[0004] A vacuum pump is fixedly connected to the top of the diaphragm;

[0005] A longitudinal partition board vertically connected to the bottom of the cabinet body is provided near the left end of the bottom of the transverse partition board, and air vents are evenly spaced in the middle of the longitudinal partition board, and an annular groove is provided on the periphery of the air vents on the left side of the longitudinal partition board;

[0006] The right side of the longitudinal diaphragm is an air storage cavity, and the left side of the longitudinal diaphragm is an air release cavity;

[0007] The cabinet in the middle of the left side of the air release cavity is provided with an air outlet, and a protective net is provided outside the air outlet;

[0008] A deflation component for preventing the expansion gas in the air storage chamber from erupting is provided in the annular groove. The deflation component includes a baffle and a spring block. One side of the spring block is fixed to the inner wall of the annular groove, and the other side of the spring block is fixedly connected to the inner side of the baffle. The baffle is in contact with the longitudinal partition.

[0009] Preferably, the air inlet pipe provided at the top of the air pump passes through the top of the cabinet, and the air outlet pipe provided at the bottom of the air pump passes through the transverse partition and is communicated with the air storage cavity.

[0010] Preferably, there are a plurality of air vents, and the plurality of air vents are evenly spaced longitudinally and opened in the middle of the longitudinal partition.

[0011] Preferably, a matching air leakage component is provided on the left side of each of the plurality of air leakage ports.

[0012] Preferably: a frame is fixedly connected to the cabinet inside the air outlet, and an exhaust fan for quickly exhausting the expanded gas in the air leakage cavity is fixedly connected to the frame.

[0013] Preferably, the air release component further comprises a sealing gasket, which is bonded to the middle portion of the inner side of the baffle and fits the inner wall of the left end of the air release port.

[0014] Technical effects and advantages of the utility model:

[0015] In the utility model, when arcing occurs in the gas inside the cabinet, the energy of the expanded gas eruption is relatively large, the pressure inside the cabinet increases, and the baffle is pushed to the left. At this time, the sealing gasket is separated from the air vent, and at the same time, the gas inside the cabinet flows into the air vent cavity from the air vent, and is then discharged from the air vent to the outside of the cabinet through the exhaust fan, thereby reducing the pressure inside the cabinet and effectively avoiding the cabinet from rupturing due to high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an environmentally friendly gas-insulated high-voltage cabinet provided in an embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the internal structure of an environmentally friendly gas-insulated high-voltage cabinet provided in an embodiment of the present application;

[0018] Figure 3 is a cross-sectional view of an environmentally friendly gas-insulated high-voltage cabinet provided in an embodiment of the present application;

[0019] Figure 4 The embodiment of this application provides Figure 3 A partial enlarged view of the middle A;

[0020] Figure 5 This is a cross-section of an environmentally friendly gas-insulated high-voltage cabinet provided in an embodiment of the present application. Figure 1 ;

[0021] Figure 6 This is a cross-section of an environmentally friendly gas-insulated high-voltage cabinet provided in an embodiment of the present application. Figure 2 ;

[0022] Figure 7 The embodiment of this application provides Figure 6 A partial enlarged view of the middle A;

[0023] Figure 8 It is a structural schematic diagram of a gas leakage component in an environmentally friendly gas-insulated high-voltage cabinet provided in an embodiment of the present application.

[0024] In the figure:

[0025] 1. Cabinet; 11. Horizontal partition; 12. Sealed door; 13. Ventilation port; 14. Air storage chamber; 15. Air release chamber; 16. Air outlet; 17. Protective net; 2. Vacuum pump; 21. Air inlet pipe; 22. Air outlet pipe; 3. Longitudinal partition; 31. Air release port; 32. Ring groove; 4. Air release assembly; 41. Baffle; 42. Spring block; 43. Sealing gasket; 5. Rack; 6. Exhaust fan. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0027] Example

[0028] See also Figures 1 to 8 In this embodiment, an environmentally friendly gas-insulated high-voltage cabinet is provided, including a cabinet body 1, a transverse partition 11 is provided near the top of the cabinet body 1, a sealing door 12 is hingedly connected to the front side of the cabinet body 1, and ventilation holes 13 are provided on the cabinet body 1 at the front and rear sides of the cavity above the transverse partition 11;

[0029] An air pump 2 is fixedly connected to the top of the transverse partition 11; a longitudinal partition 3 vertically connected to the bottom of the cabinet 1 is provided at a position near the left end of the bottom of the transverse partition 11, and air vents 31 are evenly spaced in the middle of the longitudinal partition 3, and an annular groove 32 is provided on the periphery of the air vent 31 on the left side of the longitudinal partition 3; the right side of the longitudinal partition 3 is an air storage chamber 14, and the left side of the longitudinal partition 3 is an air vent 15; an air outlet 16 is provided in the cabinet 1 in the middle of the left side of the air vent chamber 15, and a protective net 17 is provided on the outside of the air outlet 16; a air vent component 4 for preventing the expansion gas in the air storage chamber 14 from erupting is provided in the annular groove 32, and the air vent component 4 includes a baffle 41 and a spring block 42, one side of the spring block 42 is fixed to the inner wall of the annular groove 32, and the other side of the spring block 42 is fixedly connected to the inner side of the baffle 41, and the baffle 41 fits with the longitudinal partition 3.

[0030] Specifically, the air inlet pipe 21 provided on the top of the vacuum pump 2 passes through the top of the cabinet 1, and the air outlet pipe 22 provided on the bottom of the vacuum pump 2 passes through the transverse partition 11 and is connected to the air storage chamber 14; there are multiple air leakage ports 31, and the multiple air leakage ports 31 are uniformly spaced longitudinally and arranged in the middle of the longitudinal partition 3; the left sides of the multiple air leakage ports 31 are each provided with a matching air leakage component 4; a frame 5 is fixedly connected to the cabinet 1 on the inner side of the air outlet 16, and an exhaust fan 6 for quickly discharging the expanded gas in the air leakage chamber 15 is fixedly connected to the frame 5; the air leakage component 4 also includes a sealing gasket 43, which is bonded to the middle of the inner side of the baffle 41, and the sealing gasket 43 is in contact with the inner wall of the left end of the air leakage port 31.

[0031] The working principle of the utility model is:

[0032] Under normal conditions, the baffle 41 is in close contact with the left outer wall of the longitudinal partition 3, and the sealing gasket 43 on the inner side of the baffle 41 blocks the air leakage port 31. At this time, the air storage cavity 14 is in a sealed state, and the environmentally friendly gas in the air storage cavity 14 cannot leak, thereby ensuring good insulation of the cabinet 1.

[0033] When the gas inside the cabinet 1 is arcing, the energy of the expanding gas is relatively large, the pressure inside the cabinet 1 increases, and the baffle 41 is pushed to the left. At this time, the sealing gasket 43 is separated from the air leakage port 31, and the gas inside the cabinet 1 flows from the air leakage port 31 into the air leakage chamber 15, and then is discharged from the air leakage port 31 to the outside of the cabinet 1 through the exhaust fan 6, thereby reducing the pressure inside the cabinet 1 and effectively avoiding the cabinet 1 from being broken due to high pressure.

[0034] When the expanded gas is discharged from the cabinet 1, under the elastic action of the spring block 42, the baffle 41 and the sealing gasket 43 are reset, and the air leakage port 31 is blocked again, and then new insulating gas is input into the air storage chamber 14 through the air pump 2, further ensuring the good insulation of the cabinet 1.

[0035] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. An environmentally friendly gas-insulated high-voltage cabinet, comprising a cabinet body (1), wherein a transverse partition (11) is provided near the top of the cabinet body (1), a sealing door (12) is hingedly connected to the front side of the cabinet body (1), and ventilation holes (13) are provided on the cabinet body (1) at the front and rear sides of the cavity above the transverse partition (11), characterized in that: A vacuum pump (2) is fixedly connected to the top of the diaphragm (11); A longitudinal partition (3) vertically connected to the bottom of the cabinet (1) is provided at a position near the left end of the bottom of the transverse partition (11), and air vents (31) are evenly spaced in the middle of the longitudinal partition (3), and an annular groove (32) is provided on the periphery of the air vent (31) on the left side of the longitudinal partition (3); The right side of the longitudinal partition (3) is an air storage chamber (14), and the left side of the longitudinal partition (3) is an air release chamber (15); The cabinet (1) is provided with an air outlet (16) in the middle of the left side of the air release chamber (15), and a protective net (17) is provided outside the air outlet (16); A deflation component (4) for preventing the expansion gas in the gas storage chamber (14) from erupting is arranged in the annular groove (32). The deflation component (4) comprises a baffle (41) and a spring block (42). One side of the spring block (42) is fixed to the inner wall of the annular groove (32), and the other side of the spring block (42) is fixedly connected to the inner side of the baffle (41). The baffle (41) is in contact with the longitudinal partition (3).

2. The environmentally friendly gas-insulated high-voltage cabinet according to claim 1, characterized in that: The air inlet pipe (21) provided at the top of the air pump (2) passes through the top of the cabinet (1), and the air outlet pipe (22) provided at the bottom of the air pump (2) passes through the transverse partition (11) and is connected to the air storage chamber (14).

3. The environmentally friendly gas-insulated high-voltage cabinet according to claim 1, characterized in that: A plurality of air vents (31) are provided, and the plurality of air vents (31) are longitudinally evenly spaced and opened in the middle of the longitudinal partition plate (3).

4. The environmentally friendly gas-insulated high-voltage cabinet according to claim 3, characterized in that: The left sides of the plurality of air leakage ports (31) are each provided with an air leakage component (4) that cooperates therewith.

5. The environmentally friendly gas-insulated high-voltage cabinet according to claim 1, characterized in that: A frame (5) is fixedly connected to the cabinet (1) inside the air outlet (16), and an exhaust fan (6) for quickly exhausting the expanded gas in the air leakage chamber (15) is fixedly connected to the frame (5).

6. The environmentally friendly gas-insulated high-voltage cabinet according to claim 1, characterized in that: The degassing component (4) further comprises a sealing gasket (43), the sealing gasket (43) being bonded to the middle portion of the inner side of the baffle (41), and the sealing gasket (43) being in contact with the inner wall of the left end of the degassing port (31).

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