High-voltage PT cabinet structure

Abstract

The utility model relates to the technical field of high-voltage PT cabinets, in particular to a high-voltage PT cabinet structure, which comprises a high-voltage PT cabinet body. The device further comprises a heating and dehumidifying assembly, a filtering assembly and a guiding and limiting assembly. The front end of the high-voltage PT cabinet body is rotationally connected with an access door through a hinge; a heating and dehumidifying assembly, a filtering assembly and a fan are sequentially installed on the rear side of the upper end of the high-voltage PT cabinet body in the clockwise direction. The heating and dehumidifying assembly comprises a heating box; a detachable heating cover plate is mounted at the upper end of the heating box; the interior of the high-voltage PT cabinet adopts a movable design, components are closer to a doorway during maintenance, workers do not need to enter the high-voltage PT cabinet, potential safety hazards are not caused, the components are more convenient to maintain, meanwhile, the high-voltage PT cabinet has a dehumidification function, dry hot air is fed into the high-voltage PT cabinet, the interior of the high-voltage PT cabinet is kept dry, and the maintenance efficiency of the high-voltage PT cabinet is improved. The corrosion of components caused by water vapor in the air is avoided, and the service life of the components is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage PT cabinets, in particular to a high-voltage PT cabinet structure. Background Art

[0002] High-voltage PT cabinets play an important protective role in power systems. When a system failure occurs, such as overvoltage, undervoltage and other abnormal conditions, the PT cabinet can detect these abnormal signals in time and trigger the corresponding protection device. Therefore, in order to ensure the stable operation and safety protection of the power system, high-voltage PT cabinets are widely used in power systems.

[0003] Existing high-voltage PT cabinets are usually fully sealed. When the ambient humidity is high or it is in the rainy season, the interior of the high-voltage PT cabinet will become damp, affecting the service life of the internal components. In addition, the high-voltage PT cabinet is generally deep and not wide enough. When maintenance is required, workers often need to put half of their body into the high-voltage PT cabinet, which is less safe and inconvenient to maintain the interior.

[0004] Therefore, in order to solve the above-mentioned problems of inconvenient maintenance and inability to dehumidify, a device with dehumidification function and convenient maintenance can be designed. Utility Model Content

[0005] In order to overcome the problems of inconvenient maintenance and inability to dehumidify.

[0006] The technical scheme of the utility model is as follows: a high-voltage PT cabinet structure includes a high-voltage PT cabinet body; also includes a heating and dehumidifying component, a filtering component and a guide limit component; the front end of the high-voltage PT cabinet body is rotatably connected with an inspection door through a hinge; the heating and dehumidifying component, the filtering component and the fan are sequentially installed on the rear side of the upper end of the high-voltage PT cabinet body in a clockwise direction; the heating and dehumidifying component includes a heating box; a detachable heating cover is installed on the upper end of the heating box; a first baffle and a second baffle are alternately installed from left to right in the heating box; heating rods equidistantly distributed along the longitudinal direction are inserted in the first baffle and the second baffle; the filtering component includes a filter box; a detachable filter cover is installed on the upper end of the filter box; a filter is fixed at the upper end of the bottom of the filter box A filter screen perpendicular to the filter cover is connected; a sealing strip is arranged between the upper end of the filter screen and the filter cover; a guide limit assembly is arranged inside the high-voltage PT cabinet body, the guide limit assembly includes a guide slider, a guide threaded column is inserted in the guide slider, the threaded column is fixedly connected to the inner side wall of the high-voltage PT cabinet body, and a mounting plate is fixedly connected below the guide slider; a first connecting pipe is installed between the fan outlet and the filter box inlet; a second connecting pipe is installed between the filter box outlet and the heating box inlet; a third connecting pipe extending into the high-voltage PT cabinet body is installed at the heating box outlet; a fourth connecting pipe is installed between the second connecting pipe and the third connecting pipe; the guide limit assembly includes a guide slider; a guide threaded column is inserted in the guide slider.

[0007] Turn on the fan, and the air enters the space surrounded by the filter box and the filter cover from the first connecting pipe. The sealing strip ensures the sealing. The filter in the filter cover filters the air. The filtered air enters the space surrounded by the heating box and the heating cover through the second connecting pipe. The air flows between the first baffle and the second baffle, is heated by the heating rod, and then is sent into the high-voltage PT cabinet body through the third connecting pipe, and then the humid air is discharged from the high-voltage PT cabinet body. When dehumidification is not required, the air sucked by the fan is directly sent to the third connecting pipe through the fourth connecting pipe, and then sent into the high-voltage PT cabinet body. When the components on the component mounting plate need to be overhauled, open the inspection door to move the guide slider forward along the guide threaded column. After the overhaul is completed, return to its original position.

[0008] The upper end of the first baffle is fixedly connected to the lower end of the heating cover, and the lower end of the second baffle is fixedly connected to the bottom of the heating box; and the height of the first baffle and the second baffle is less than the depth of the heating box; the heating rod is fixedly connected to the left inner wall of the heating box.

[0009] The left and right ends of the filter screen are fixedly connected to the inner wall of the filter box; the upper end of the sealing strip abuts against the lower end of the top of the filter cover plate.

[0010] An adjusting nut is threadedly connected to the outer side of the guide thread column.

[0011] A guide rail symmetrically distributed on the left and right is installed at the upper bottom end of the high-voltage PT cabinet body; a pulley fixedly connected to the component mounting plate is slidably connected in the guide rail.

[0012] Shock-absorbing pads are fixedly connected at the four corners of the rear end of the component installation plate; and a shock-absorbing damping spring is fixedly connected in a concave position at the rear end of the shock-absorbing pad.

[0013] A partition frame is fixedly connected to the front end of the component installation plate; the partition frame divides the component installation plate into a busbar room, a cable room, a control instrument room and a circuit breaker trolley room in a sequence from top to bottom and from left to right.

[0014] A window is provided on the inspection door; the area of ​​the window is larger than 50% of the area of ​​the inspection door; heat dissipation nets are installed in the heat dissipation grooves at both ends of the high-voltage PT cabinet body.

[0015] The beneficial effects of the utility model are as follows: a high-voltage PT cabinet structure adopts a movable design inside, so that components are closer to the door during maintenance, and workers do not need to enter the high-voltage PT cabinet, which will not cause safety hazards and is more convenient for maintenance of components. The utility model also has a dehumidification function, which can keep the inside of the high-voltage PT cabinet dry by sending dry hot air into the high-voltage PT cabinet, thereby avoiding corrosion of components caused by water vapor in the air and greatly improving the service life of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a first three-dimensional structural schematic diagram of the high-voltage PT cabinet structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the high-voltage PT cabinet structure of the utility model after the inspection door is removed;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the heating and dehumidification components in the high-voltage PT cabinet structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the filter assembly in the high-voltage PT cabinet structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide and limit assembly and the component installation plate in the high-voltage PT cabinet structure of the utility model.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the high-voltage PT cabinet structure section of the utility model;

[0022] Explanation of the accompanying drawings: 1. High-voltage PT cabinet body; 2. Inspection door; 301. Heating box; 302. Heating cover; 303. First baffle; 304. Second baffle; 305. Heating rod; 401. Filter box; 402. Filter cover; 403. Filter screen; 404. Sealing strip; 5. Fan; 601. Guide slider; 602. Guide threaded column; 603. Adjusting nut; 7. Component mounting plate; 8. First connecting pipe; 9. Second connecting pipe; 10. Third connecting pipe; 11. Fourth connecting pipe; 12. Heat dissipation net; 13. Guide rail; 14. Pulley; 15. Shock-absorbing pad; 16. Shock-absorbing damping spring; 17. Partition frame; 18. Window. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Embodiment 1:

[0025] like Figure 1As shown, a high-voltage PT cabinet structure includes a high-voltage PT cabinet body 1; a heating and dehumidifying component, a filtering component and a guide limit component; the front end of the high-voltage PT cabinet body 1 is rotatably connected to an inspection door 2 through a hinge; the heating and dehumidifying component, the filtering component and the fan 5 are sequentially installed on the rear side of the upper end of the high-voltage PT cabinet body 1 in a clockwise direction; a first connecting pipe 8 is installed between the outlet end of the fan 5 and the inlet of the filter box 401; a second connecting pipe 9 is installed between the outlet of the filter box 401 and the inlet of the heating box 301; a third connecting pipe 10 extending into the high-voltage PT cabinet body 1 is installed at the outlet end of the heating box 301; a fourth connecting pipe 11 is installed between the second connecting pipe 9 and the third connecting pipe 10;

[0026] like Figure 2 As shown, a guide limiter assembly is provided inside the high-voltage PT cabinet body 1, and the guide limiter assembly includes a guide slider 601, a guide threaded column 602 is inserted into the guide slider 601, and the threaded column 602 is fixedly connected to the inner side wall of the high-voltage PT cabinet body 1, and a mounting plate 7 is fixedly connected below the guide slider 601;

[0027] like Figure 3 As shown, the heating and dehumidifying assembly includes a heating box 301; a detachable heating cover 302 is installed on the upper end of the heating box 301; a first baffle 303 and a second baffle 304 are alternately installed in the heating box 301 from left to right; heating rods 305 equidistantly distributed in the longitudinal direction are inserted into the first baffle 303 and the second baffle 304;

[0028] like Figure 4 As shown, the filter assembly includes a filter box 401; a detachable filter cover 402 is installed on the upper end of the filter box 401; a filter screen 403 vertical to the filter cover 402 is fixedly connected to the upper end of the bottom of the filter box 401; a sealing strip 404 is provided between the upper end of the filter screen 403 and the filter cover 402;

[0029] like Figure 5 As shown, a guide threaded column 602 is inserted into the guide slider 601 .

[0030] Embodiment 2:

[0031] like Figure 3 As shown, the upper end of the first baffle 303 is fixedly connected to the lower end of the heating cover plate 302, and the lower end of the second baffle 304 is fixedly connected to the bottom of the heating box 301; and the height of the first baffle 303 and the second baffle 304 is less than the depth of the heating box 301; the heating rod 305 is fixedly connected to the left inner wall of the heating box 301, extending the air path to ensure the heating effect of the air;

[0032] like Figure 4As shown, the left and right ends of the filter screen 403 are fixedly connected to the inner wall of the filter box 401; the upper end of the sealing strip 404 abuts against the lower end of the top of the filter cover plate 402 to ensure the sealing inside the filter box 401;

[0033] like Figure 5 As shown, the outer side of the guide thread column 602 is threadedly connected with an adjusting nut 603 .

[0034] Embodiment 3:

[0035] like Figure 1 As shown, heat dissipation nets 12 are installed in the heat dissipation slots at both ends of the high-voltage PT cabinet body 1, which does not affect the heat dissipation and prevents high temperature from accelerating the aging of components inside the high-voltage PT cabinet body 1.

[0036] like Figure 2 As shown, a guide rail 13 symmetrically distributed on the left and right is installed at the upper bottom end of the high-voltage PT cabinet body 1; a pulley 14 fixedly connected to the component mounting plate 7 is slidably connected in the guide rail 13;

[0037] like Figure 5 As shown, shock-absorbing pads 15 are fixedly connected at the four corners of the rear end of the component mounting plate 7; a shock-absorbing damping spring 16 is fixedly connected in the concave position at the rear end of the shock-absorbing pad 15, and the position of the component mounting plate 7 is limited when the component mounting plate 7 moves backward, thereby avoiding the impact on the component mounting plate 7; a partition frame 17 is fixedly connected to the front end of the component mounting plate 7; the partition frame 17 divides the component mounting plate 7 into a busbar room, a cable room, a control instrument room and a circuit breaker trolley room in the order from top to bottom and from left to right;

[0038] like Figure 6 As shown, a window 18 is provided on the inspection door 2; the area of ​​the window 18 is greater than 50% of the area of ​​the inspection door 2;

[0039] When working, the fan 5 is turned on, and air enters the space surrounded by the filter box 401 and the filter cover plate 402 from the first connecting pipe 8. The sealing strip 404 ensures the sealing. The filter screen 403 in the filter cover plate 402 filters the air. The filtered air enters the space surrounded by the heating box 301 and the heating cover plate 302 through the second connecting pipe 9. The air flows between the first baffle plate 303 and the second baffle plate 304, is heated by the heating rod 305, and then is sent into the high-voltage PT cabinet body 1 through the third connecting pipe 10, and then the humid air is discharged from the high-voltage PT cabinet body 1. When dehumidification is not required, the air sucked by the fan 5 is directly sent to the third connecting pipe 10 through the fourth connecting pipe 11, and then sent into the high-voltage PT cabinet body 1. When the components on the component mounting plate 7 need to be repaired, the inspection door 2 is opened to move the guide slider 601 forward along the guide thread column 602, and the pulley 14 slides in the guide rail 13. After the inspection is completed, it can be restored to its original position.

[0040] Through the above steps, a high-voltage PT cabinet structure is provided, which adopts a movable design inside. During maintenance, the components are placed closer to the door, which makes the maintenance of the components more convenient. At the same time, it also has a dehumidification function to keep the inside of the high-voltage PT cabinet dry and avoid corrosion of the components caused by water vapor in the air, thus solving the problems of unchanged maintenance and inability to dehumidify and greatly improving the service life of the components.

Claims

1. A high-voltage PT cabinet structure, comprising a high-voltage PT cabinet body (1); characterized in that: The invention also comprises a heating and dehumidifying assembly, a filtering assembly and a guide and limiting assembly; the front end of the high-voltage PT cabinet body (1) is rotatably connected to an inspection door (2) via a hinge; the rear side of the upper end of the high-voltage PT cabinet body (1) is provided with a heating and dehumidifying assembly, a filtering assembly and a fan (5) in a clockwise direction; the heating and dehumidifying assembly comprises a heating box (301); a detachable heating cover plate (302) is provided at the upper end of the heating box (301); a first baffle plate (303) and a second baffle plate (304) are alternately provided in the heating box (301) from left to right; the first baffle plate (303) and the second baffle plate (304) are provided in a clockwise direction; 04) is plugged with heating rods (305) distributed equidistantly in the longitudinal direction; the filter assembly includes a filter box (401); a detachable filter cover (402) is installed at the upper end of the filter box (401); a filter screen (403) vertically connected to the filter cover (402) is fixedly connected to the upper end of the bottom of the filter box (401); a sealing strip (404) is provided between the upper end of the filter screen (403) and the filter cover (402); a guide limit assembly is provided inside the high-voltage PT cabinet body (1), and the guide limit assembly includes a guide slider (601), and a guide screw is plugged into the guide slider (601). The threaded column (602) is fixedly connected to the inner side wall of the high-voltage PT cabinet body (1); a mounting plate (7) is fixedly connected below the guide slider (601); a first connecting pipe (8) is installed between the outlet end of the fan (5) and the inlet end of the filter box (401); a second connecting pipe (9) is installed between the outlet end of the filter box (401) and the inlet end of the heating box (301); a third connecting pipe (10) is installed at the outlet end of the heating box (301) and extends into the high-voltage PT cabinet body (1); and a fourth connecting pipe (11) is installed between the second connecting pipe (9) and the third connecting pipe (10). A guide rail (13) symmetrically distributed on the left and right is installed at the upper bottom end of the high-voltage PT cabinet body (1); a pulley (14) fixedly connected to the component mounting plate (7) is slidably connected inside the guide rail (13); shock-absorbing pads (15) are fixedly connected at the four corners of the rear end of the component mounting plate (7); a shock-absorbing damping spring (16) is fixedly connected in a recessed position at the rear end of the shock-absorbing pad (15); a partition frame (17) is fixedly connected at the front end of the component mounting plate (7); the partition frame (17) divides the component mounting plate (7) into a busbar room, a cable room, a control instrument room and a circuit breaker trolley room in a sequence from top to bottom and from left to right.

2. The high voltage PT cabinet structure according to claim 1 is characterized in that: The upper end of the first baffle plate (303) is fixedly connected to the lower end of the heating cover plate (302), and the lower end of the second baffle plate (304) is fixedly connected to the bottom of the heating box (301); the height of the first baffle plate (303) and the second baffle plate (304) is less than the depth of the heating box (301); and the heating rod (305) is fixedly connected to the left inner wall of the heating box (301).

3. The high voltage PT cabinet structure according to claim 1 is characterized in that: The left and right ends of the filter screen (403) are fixedly connected to the inner wall of the filter box (401); the upper end of the sealing strip (404) abuts against the lower end of the top of the filter cover plate (402).

4. The high voltage PT cabinet structure according to claim 1 is characterized in that: The outer side of the guide threaded column (602) is threadedly connected with an adjusting nut (603).

5. The high voltage PT cabinet structure according to claim 1 is characterized in that: A viewing window (18) is provided on the inspection door (2); the area of ​​the viewing window (18) is greater than 50% of the area of ​​the inspection door (2); and heat dissipation nets (12) are installed in the heat dissipation grooves at both ends of the high-voltage PT cabinet body (1).

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