Waterproof and moistureproof totally-enclosed all-insulation gas-insulated switchgear

Abstract

The utility model discloses a waterproof and moistureproof totally-enclosed all-insulation gas-insulated switchgear, which relates to the technical field of gas-insulated switchgears, and comprises a sealing box, three upper preformed holes and three lower preformed holes, the three upper preformed holes are distributed at the top of the sealing box at equal intervals, and the three lower preformed holes are distributed at the bottom of the sealing box at equal intervals; the top of the rear side of the sealing box is fixedly connected with a control module, and the middle of the top of the rear side of the sealing box is fixedly connected with an air pressure detector. According to the waterproof and moistureproof totally-enclosed all-insulation gas-insulated cabinet, when the air pressure in the sealing box is reduced, the air pressure detector can detect the change of the reduction of the air pressure in the sealing box; at the moment, the control module controls the control valve to be communicated, so that the inert gas in the high-pressure tank enters the sealing box through the control valve, the air pressure in the sealing box is kept, meanwhile, the concentration of the inert gas in the sealing box is kept, and the arc extinguishing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-insulated switchgear, in particular to a fully enclosed and fully insulated gas-insulated switchgear with waterproof and moisture-proof functions. Background Art

[0002] A gas-insulated switchgear is an indoor AC high-voltage gas-insulated metal-enclosed switchgear, which is mainly applied to small secondary substations, switching stations, box-type substations and other fields in the power system.

[0003] For example, a fully enclosed and fully insulated gas-insulated switchgear with waterproof and moisture-proof functions, with the publication number CN214204616U, includes a cabinet body. One side of the cabinet body close to the cabinet door is provided with a mounting plate. The side of the mounting plate close to the cabinet door is attached with an insulating film. The side of the mounting plate away from the cabinet door is provided with a plurality of protective covers for covering the switches. The side of the mounting plate away from the cabinet door is provided with a sealing and partitioning structure. The switches on the mounting plate are electrically connected to the control mechanism inside the cabinet body through wires sequentially passing through the protective covers and the sealing and partitioning structure. In this utility model, the interior of the cabinet body is divided into two independent spaces, and the two spaces are relatively independent and sealed, thus avoiding the direct exposure of the entire interior of the cabinet body when the staff opens the cabinet door. In addition, an air drying device is provided on the bottom surface between the mounting plate and the cabinet door to dehumidify and dry the air in the space between the mounting plate and the cabinet door, thereby avoiding the influence of moisture on the equipment inside the cabinet body.

[0004] For the fully enclosed and fully insulated gas-insulated switchgear with waterproof and moisture-proof functions in the above technical solution, by dividing the interior of the cabinet body into two independent spaces, the sealing performance of the cabinet body is improved. In the actual use process, when the gas-insulated switchgear leaks, the inert gas inside it will leak, resulting in the gas-insulated switchgear being unable to play its arc extinguishing role. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fully enclosed and fully insulated gas-insulated switchgear with waterproof and moisture-proof functions, so as to solve the problem that when the gas-insulated switchgear leaks, the inert gas inside it will leak, resulting in the gas-insulated switchgear being unable to play its arc extinguishing role in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A fully enclosed and fully insulated gas-insulated switchgear with waterproof and moisture-proof functions, including a sealed box, upper reserved holes, and lower reserved holes. Both the upper reserved holes and the lower reserved holes are provided with three, and the three upper reserved holes are equidistantly distributed on the top of the sealed box, and the three lower reserved holes are equidistantly distributed on the bottom of the sealed box;

[0007] A control module is fixedly connected to the top of the rear side of the sealed box, and a pressure detector is fixedly connected to the middle of the top of the rear side of the sealed box. Moreover, an air filling valve is fixedly connected to one side of the top of the rear side of the sealed box away from the control module. The pressure detector and the air filling valve both extend into the sealed box, and both the air filling valve and the pressure detector are electrically connected to the control module. A high-pressure tank is fixedly connected to the bottom of the rear side of the sealed box, and the high-pressure tank extends into the sealed box through a pipeline. Moreover, a control valve is provided at the connection between the high-pressure tank and the air filling valve;

[0008] A sealing structure for sealing the inside is provided on the front side of the sealed box.

[0009] Preferably, a plurality of heat dissipation fins are fixedly connected to the rear side of the sealed box and are evenly distributed at equal intervals. Moreover, two threaded sleeves are fixedly connected to both sides of the sealed box and are distributed vertically up and down. And the threaded sleeves and the front side of the sealed box are on the same vertical plane.

[0010] Preferably, maintenance openings are provided on the front side of the sealed box and are distributed in a rectangular shape. Moreover, a sealing ring is fixedly connected to the front side of the sealed box and is distributed in an annular shape. And the sealing ring is distributed outside the maintenance openings. At the same time, two symmetrically distributed positioning slide bars are fixedly connected to the rear side inside the sealed box.

[0011] Preferably, the sealing structure includes a sealing door, and an observation window is provided in the middle of the sealing door. Two fixing bars are fixedly connected to both sides of the sealing door and are distributed vertically up and down. And a self-tapping bolt is rotatably connected to one end of the fixing bar away from the sealing door.

[0012] Preferably, a self-tapping bolt is rotatably connected to one end of the fixing bar away from the sealing door, and the self-tapping bolt is internally threaded with the threaded sleeve. An annular sealing groove is provided inside the sealing door, and the inside of the sealing groove is engaged with the sealing ring.

[0013] Preferably, a telescopic rod is rotatably connected to the middle of the rear side inside the sealed box, and a moving plate is fixedly connected to the lower end of the telescopic rod. Two symmetrically distributed clamping grooves are provided on the side of the moving plate, and the outside of the positioning slide bar is slidably connected to the inside of the clamping grooves.

[0014] Preferably, three connecting rods are fixedly connected to the bottom of the moving plate and are evenly distributed at equal intervals. And the connecting rods are of an L-shaped structure. Moreover, a circuit breaker is fixedly connected to one end of the connecting rod away from the moving plate. A wiring post is fixedly connected to the top of the circuit breaker, and a wiring block is fixedly connected to the bottom of the circuit breaker. The wiring post extends outside the top of the sealed box through the circuit breaker, and the wiring block extends to the bottom of the sealed box through a lower reserved hole. Moreover, the bottom of the circuit breaker is interconnected with the wiring block through a cable.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] This waterproof and moisture-proof fully enclosed and fully insulated gas-insulated switchgear. When the internal air pressure of the sealed box decreases, the air pressure detector will detect the change in the decrease of the internal air pressure of the sealed box. At this time, the control module will control the control valve to communicate, so that the inert gas inside the high-pressure tank enters the sealed box through the control valve, thereby maintaining the internal air pressure of the sealed box and the concentration of the inert gas inside the sealed box, and playing its arc extinguishing role;

[0017] Furthermore, a communication module is also provided inside the control module. When the internal air pressure of the sealed box continues to drop, this control module will control the telescopic rod to shorten, causing an open circuit inside the upper reserved hole, thereby cutting off the internal circuit of the sealed box. The communication module inside the control module transmits the device status information for easy management of the gas-insulated switchgear;

[0018] Furthermore, a sealing structure is provided. When the sealing door fits with the sealed box, the sealing groove inside the sealing door will be engaged with the sealing ring, thereby realizing the sealed environment inside the sealed box. At the same time, the self-tapping screw and the threaded sleeve are connected to each other, so that the self-tapping screw applies a force in the vertical direction of the fixed strip to the sealed box. At the same time, by adjusting the self-tapping screw, the pressure applied by the self-tapping screw to the fixed strip can be adjusted in real time, thereby adjusting the pressure between the sealing door and the sealed box and maintaining the seal at the connection between the sealed box and the sealing door. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0020] Figure 2 is a sectional structure schematic diagram of the sealed box of the present invention;

[0021] Figure 3 is a schematic diagram of the rear side structure of the sealed box of the present invention;

[0022] Figure 4 is a schematic diagram of the sealing door structure of the present invention;

[0023] Figure 5 is a schematic diagram of the circuit breaker structure of the present invention;

[0024] Figure 6 is a sectional structure schematic diagram of the sealed box of the present invention.

[0025] In the figure: 1. Sealed box; 2. Upper reserved hole; 3. Lower reserved hole; 4. Heat dissipation fin; 5. Threaded sleeve; 6. Maintenance port; 7. Sealing ring; 8. Positioning slide bar; 9. Control module; 10. Air pressure detector; 11. Gas filling valve; 12. High-pressure tank; 13. Control valve; 14. Sealing door; 15. Observation window; 16. Fixed bar; 17. Self-tapping bolt; 18. Telescopic rod; 19. Moving plate; 20. Link; 21. Terminal block; 22. Circuit breaker; 23. Wiring block. Specific implementation mode

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment 1:

[0028] Please refer to Figure 1 - Figure 6 The present invention provides the following technical solutions:

[0029] A waterproof and moisture-proof fully enclosed and fully insulated gas-filled cabinet, including a sealed box 1, an upper reserved hole 2, and a lower reserved hole 3. There are three upper reserved holes 2 and three lower reserved holes 3. The three upper reserved holes 2 are equidistantly distributed on the top of the sealed box 1, and the three lower reserved holes 3 are equidistantly distributed on the bottom of the sealed box 1;

[0030] A control module 9 is fixedly connected to the top of the rear side of the sealed box 1, and an air pressure detector 10 is fixedly connected to the middle of the top of the rear side of the sealed box 1. A gas filling valve 11 is fixedly connected to one side of the top of the rear side of the sealed box 1 far from the control module 9. The air pressure detector 10 and the gas filling valve 11 both extend into the sealed box 1, and both the gas filling valve 11 and the air pressure detector 10 are electrically connected to the control module 9. A high-pressure tank 12 is fixedly connected to the bottom of the rear side of the sealed box 1, and the high-pressure tank 12 extends into the sealed box 1 through a pipeline. A control valve 13 is provided at the connection between the high-pressure tank 12 and the gas filling valve 11;

[0031] A sealing structure for sealing the inside is provided on the front side of the sealed box 1.

[0032] A plurality of heat dissipation fins 4 are fixedly connected to the top of the rear side of the sealed box 1 at equal intervals, and two threaded sleeves 5 are fixedly connected to both sides of the sealed box 1 and are distributed up and down. The threaded sleeves 5 are on the same vertical plane as the front side of the sealed box 1.

[0033] The front side of the sealed box 1 is provided with maintenance openings 6 distributed in a rectangular shape, and the front side of the sealed box 1 is fixedly connected with a sealing ring 7 distributed in a circular shape. The sealing ring 7 is distributed outside the maintenance openings 6. At the same time, two symmetrically distributed positioning slide bars 8 are fixedly connected to the rear side inside the sealed box 1.

[0034] The sealing structure includes a sealing door 14, and an observation window 15 is provided in the middle of the sealing door 14. Two upper and lower distributed fixing bars 16 are fixedly connected to both sides of the sealing door 14, and a self-tapping bolt 17 is rotatably connected to one end of the fixing bar 16 far from the sealing door 14.

[0035] A self-tapping bolt 17 is rotatably connected to one end of the fixing bar 16 far from the sealing door 14, and the self-tapping bolt 17 is threadedly connected to the inside of the threaded sleeve 5. A sealing groove distributed in a circular shape is provided on the inner side of the sealing door 14, and the inside of the sealing groove is snap-fitted with the sealing ring 7.

[0036] An expansion rod 18 is rotatably connected to the middle of the rear side inside the sealed box 1, and a moving plate 19 is fixedly connected to the lower end of the expansion rod 18. Two symmetrically distributed card slots are provided on the side of the moving plate 19, and the outside of the positioning slide bar 8 is slidably connected to the inside of the card slots.

[0037] Three equally spaced connecting rods 20 are fixedly connected to the bottom of the moving plate 19. The connecting rods 20 are of an L-shaped structure, and one end of the connecting rod 20 far from the moving plate 19 is fixedly connected to a circuit breaker 22. A wiring post 21 is fixedly connected to the top of the circuit breaker 22, and a wiring block 23 is fixedly connected to the bottom of the circuit breaker 22. The wiring post 21 extends to the outside of the top of the sealed box 1 through the circuit breaker 22, and the wiring block 23 extends to the bottom of the sealed box 1 through the lower reserved hole 3. And the bottom of the circuit breaker 22 is connected to the wiring block 23 through a cable.

[0038] Embodiment Two:

[0039] On the basis of Embodiment One, its specific working principle is as follows:

[0040] For this waterproof and moisture-proof fully enclosed and fully insulated gas-filled cabinet, after the equipment is installed, inert gas is filled into the sealed box 1 through the gas filling valve 11. At the same time, the air pressure inside the sealed box 1 is monitored in real time by the air pressure detector 10. The air pressure information detected by the air pressure detector 10 will be transmitted to the control module 9 in real time. Meanwhile, the control valve 13 and the control module 9 are electrically connected to each other. When the air pressure inside the sealed box 1 decreases, at this time, the air pressure detector 10 will detect the change in the decrease of the air pressure inside the sealed box 1. At this time, the control module 9 will control the control valve 13 to be connected, so that the inert gas inside the high-pressure tank 12 enters the sealed box 1 through the control valve 13, thereby maintaining the air pressure inside the sealed box 1 and the concentration of the inert gas inside the sealed box 1, and playing its arc extinguishing role. There is also a communication module inside the control module 9. When the air pressure inside the sealed box 1 continues to drop, this control module 9 will control the telescopic rod 18 to shorten, so that an open circuit is formed inside the upper reserved hole 2, thereby cutting off the circuit inside the sealed box 1. The communication module inside the control module 9 transmits the equipment status information, which is convenient for the management of the gas-filled cabinet;

[0041] When the sealing door 14 fits with the sealed box 1, at this time, the sealing groove inside the sealing door 14 will be engaged with the sealing ring 7, thereby realizing the sealed environment inside the sealed box 1. At the same time, the self-tapping screw 17 of the lead screw is connected to the inside of the threaded sleeve 5 at the same time, so that the self-tapping screw 17 exerts a force on the fixing strip 16 in the vertical direction of the sealed box 1. At the same time, by adjusting the self-tapping screw 17, the pressure exerted by the self-tapping screw 17 on the fixing strip 16 can be adjusted in real time, so as to adjust the pressure between the sealing door 14 and the sealed box 1 and maintain the seal at the connection between the sealed box 1 and the sealing door 14;

[0042] Through the extension and contraction of the telescopic rod 18, the moving plate 19 is driven to move up and down. At the same time, through the sliding connection between the card slot inside the moving plate 19 and the positioning slide bar 8, the movement state of the moving plate 19 is stabilized. At the same time, the up and down movement of the moving plate 19 drives the three connecting rods 20 to move up and down synchronously, so that the lower end of the circuit breaker 22 can move up and down synchronously, realizing the synchronous control of the circuit.

[0043] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A waterproof and moisture-proof fully enclosed fully insulated inflatable cabinet, comprising a sealed box (1), an upper reserved hole (2), and a lower reserved hole (3), wherein the upper reserved hole (2) and the lower reserved hole (3) are each provided with three, and the three upper reserved holes (2) are equidistantly distributed on the top of the sealed box (1), and the three lower reserved holes (3) are equidistantly distributed on the bottom of the sealed box (1); Features: The top of the rear side of the sealed box (1) is fixedly connected to a control module (9), and the middle of the top of the rear side of the sealed box (1) is fixedly connected to an air pressure detector (10), and a side of the top of the rear side of the sealed box (1) away from the control module (9) is fixedly connected to a gas filling valve (11), the air pressure detector (10) and the gas filling valve (11) both extend into the interior of the sealed box (1), and the gas filling valve (11) and the air pressure detector (10) are both electrically connected to the control module (9), the bottom of the rear side of the sealed box (1) is fixedly connected to a high-pressure tank (12), and the high-pressure tank (12) extends into the interior of the sealed box (1) through a pipeline, and a control valve (13) is provided at the connection between the high-pressure tank (12) and the gas filling valve (11); The front side of the sealed box (1) is provided with a sealing structure for sealing the interior thereof.

2. A waterproof and moisture-proof fully enclosed and fully insulated inflatable cabinet according to claim 1, characterized in that: The rear side of the sealed box (1) is fixedly connected to a plurality of equidistantly distributed heat dissipation fins (4), and both sides of the sealed box (1) are fixedly connected to two vertically distributed threaded sleeves (5), and the threaded sleeves (5) are located on the same vertical plane as the front side of the sealed box (1).

3. A waterproof and moisture-proof fully enclosed and fully insulated inflatable cabinet according to claim 2, characterized in that: The front side of the sealing box (1) is provided with a maintenance port (6) distributed in a rectangular shape, and the front side of the sealing box (1) is fixedly connected with a sealing ring (7) distributed in a ring shape, and the sealing ring (7) is distributed outside the maintenance port (6), and at the same time, the rear side of the inside of the sealing box (1) is fixedly connected with two symmetrically distributed positioning slides (8).

4. The waterproof and moisture-proof fully enclosed and fully insulated inflatable cabinet according to claim 1, characterized in that: The sealing structure comprises a sealing door (14), and an observation window (15) is provided in the middle of the sealing door (14). Two fixing strips (16) distributed up and down are fixedly connected to both sides of the sealing door (14), and a self-tightening bolt (17) is rotatably connected to one end of the fixing strip (16) away from the sealing door (14).

5. A waterproof and moisture-proof fully enclosed and fully insulated inflatable cabinet according to claim 4, characterized in that: A self-tightening bolt (17) is rotatably connected to one end of the fixing strip (16) away from the sealing door (14), and the self-tightening bolt (17) is threadedly connected to the inside of the threaded sleeve (5). An annular sealing groove is provided on the inside of the sealing door (14), and the inside of the sealing groove is snap-connected with the sealing ring (7).

6. The waterproof and moisture-proof fully enclosed and fully insulated inflatable cabinet according to claim 1, characterized in that: A telescopic rod (18) is rotatably connected to the middle of the rear side of the sealed box (1), and a moving plate (19) is fixedly connected to the lower end of the telescopic rod (18). Two symmetrically distributed card slots are provided on the side of the moving plate (19), and the inside of the card slot is slidably connected to the outside of the positioning slide bar (8).

7. A waterproof and moisture-proof fully enclosed and fully insulated inflatable cabinet according to claim 6, characterized in that: The bottom of the moving plate (19) is fixedly connected to three equidistantly distributed connecting rods (20), and the connecting rods (20) are set to an L-shaped structure, and the end of the connecting rod (20) away from the moving plate (19) is fixedly connected to a circuit breaker (22), the top of the circuit breaker (22) is fixedly connected to a terminal post (21), and the bottom of the circuit breaker (22) is fixedly connected to a terminal block (23), the terminal post (21) extends to the outside of the top of the sealed box (1) through the circuit breaker (22), and the terminal block (23) extends to the bottom of the sealed box (1) through the lower reserved hole (3), and the bottom of the circuit breaker (22) is connected to the terminal block (23) through a cable.

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