A sealing device for inlet and outlet lines of a power distribution cabinet

Abstract

The present application discloses a sealing device for inlet and outlet wires of a distribution cabinet, comprising a cabinet body, wherein an inlet and outlet groove is provided in the middle of the bottom wall of the inner cavity of the cabinet body, a fixing plate is fixedly installed on the bottom wall of the inner cavity of the cabinet body, and an extrusion plate is slidably connected to the side of the bottom wall of the inner cavity of the cabinet body away from the fixing plate, an arc groove is provided on the end of the fixing plate and the extrusion plate close to each other, a first ventilation groove is provided inside the fixing plate and the extrusion plate, an air bag communicating with the first ventilation groove is fixedly installed on the inner surface of the arc groove, a sliding rod is fixedly installed on the end of the fixing plate and the extrusion plate close to each other, the sliding rod extends into the interior of the first ventilation groove and is fixedly installed with a piston plate slidably connected to the inner surface of the first ventilation groove, thereby realizing the sealing of the inlet and outlet of the wires in the distribution cabinet, so that it can be closed as the cabinet door is opened and closed, and the wires can be cooled at the same time to prevent multiple wires from being entangled together, causing their temperature to rise and causing them to be damaged.

Description

Technical Field

[0001] The present application relates to the technical field of power distribution cabinets, and more particularly to a sealing device for incoming and outgoing lines of a power distribution cabinet. Background Art

[0002] A distribution cabinet is a low-voltage power distribution device that is assembled in a closed or semi-enclosed metal cabinet or on a screen according to the requirements of electrical wiring. The distribution cabinet can be divided into a power distribution cabinet and a lighting distribution cabinet. It is the last-level equipment of the power distribution system. Its main function is to distribute the electrical energy of a circuit of the upper-level distribution equipment to the nearest load, and to provide protection, monitoring and control for the load. During normal operation, the circuit can be connected or disconnected with the help of manual or automatic switches. In case of fault or abnormal operation, the circuit will be cut off or an alarm will be issued with the help of protective electrical appliances. It is often used in various power generation, distribution and substations.

[0003] In order to protect the distribution cabinet and prevent insects, rats, etc. from entering the distribution cabinet through the access openings of the wires and causing damage to it, it is necessary to block the access openings of the wires.

[0004] Generally, the inlets and outlets of the power distribution cabinets are sealed with insulating putty to prevent insects and rats from entering the cabinets. However, the use of insulating putty not only blocks insects and rats, but also fixes the wires. When inspecting the wires, the staff need to remove the putty around the wires first, which reduces work efficiency to a certain extent. Summary of the Invention

[0005] The purpose of the present application is to seal the inlet and outlet of the wires of the distribution cabinet so that it cannot interfere with the maintenance of the wires. A distribution cabinet inlet and outlet sealing device is provided, including a cabinet body, an inlet and outlet groove is provided in the middle of the bottom wall of the inner cavity of the cabinet body, and a fixed plate is fixedly installed on the bottom wall of the inner cavity of the cabinet body. The inner cavity bottom wall of the cabinet body is slidably connected with an extrusion plate on the side away from the fixed plate. The fixed plate and the extrusion plate are both provided with an arc groove at one end close to each other. The fixed plate and the extrusion plate are both provided with a first ventilation groove inside. The inner surface of the arc groove is fixedly installed with an air bag communicating with the first ventilation groove. The fixed plate and the extrusion plate are both fixedly installed with a sliding rod at one end close to each other. The sliding rod extends into the interior of the first ventilation groove and is fixedly installed with a piston plate slidably connected to the inner surface of the first ventilation groove, so as to realize the sealing of the inlet and outlet of the wires in the distribution cabinet, so that it can be closed as the cabinet door is opened and closed, and the wires can be cooled at the same time to prevent multiple wires from being entangled together, causing their temperature to rise and causing them to be damaged.

[0006] Furthermore, two sliding grooves are provided on the bottom wall of the inner cavity of the cabinet, and two sliders are fixedly installed on the end of the extrusion plate away from the fixed plate. The sliders are slidably connected in the sliding grooves to slide the extrusion plate and the cabinet together to prevent the extrusion plate from deviating as the telescopic rod is tilted and extruded, resulting in dead angles on the extrusion surfaces of the two airbags, affecting the sealing of the inlet and outlet grooves.

[0007] Furthermore, the rear part of the cabinet body is rotatably connected to a cabinet door, and the cabinet door and a side wall of the extrusion plate are rotatably connected to a telescopic rod. The telescopic rod is extended and retracted as the cabinet door rotates, thereby pulling the extrusion plate to move and opening the entry and exit slots, making it convenient for staff to inspect and repair the wires in the distribution cabinet.

[0008] Furthermore, when the angle between the cabinet door and the cabinet body is at 70 degrees, the telescopic rod is at its maximum length, and when the angle between the cabinet door and the cabinet body is at 35 degrees, the telescopic rod is at its shortest length. When the angle between the cabinet door and the cabinet body is closed to below 35 degrees, the telescopic rod will push the extrusion plate toward the fixed plate, thereby inflating the two airbags and blocking the inlet and outlet slots.

[0009] Furthermore, the telescopic rod includes a thick rod and a thin rod, the thin rod is slidably connected to the inner cavity of the thick rod, and one end of the thin rod located in the inner cavity of the thick rod and the end on the inner side of the thick rod away from the thin rod are jointly fixed with a spring to prevent the extrusion plate from separating from the fixed plate under the mutual extrusion of the two airbags.

[0010] Furthermore, when the telescopic rod is in an extended state, the spring inside the thick rod is in a normal state, and the extrusion plate will always squeeze the fixed plate under the action of the spring, so that the two airbags are close to each other and the inlet and outlet slots are blocked.

[0011] Furthermore, a liquid storage cavity is provided inside the side where the two airbags are close to each other, and the liquid storage cavity is filled with an aqueous solution, which is convenient for cooling the wires passing through the inlet and outlet slots, avoiding multiple wires being entangled with each other and causing the temperature to rise, thereby protecting the wires from being damaged.

[0012] Furthermore, a liquid storage tank is provided inside the fixed plate and the extrusion plate, a second ventilation tank communicated with the outside is provided on the top wall of the liquid storage tank, a water groove communicated with the liquid storage cavity is provided at the bottom of the liquid storage tank, a sealing gasket is slidably connected to the inner surface of the liquid storage tank, a pull rope is fixedly installed at the lower end of the sealing gasket, a part of the pull rope away from the sealing gasket passes through the inner surface of the water groove and is fixedly connected to the inner side of the airbag, and when the airbag expands, the pull rope will be pulled to press the sealing gasket downward to squeeze the aqueous solution into the liquid storage cavity.

[0013] Furthermore, the connection between the liquid storage tank and the water trough is an arc-shaped structure, which prevents the pull rope from being broken due to excessive wear and tear, thereby affecting the normal use of the liquid storage cavity.

[0014] Furthermore, the inner diameter of the upper portion of the liquid storage tank is larger than the inner diameter of the lower portion thereof, so as to prevent the sealing gasket from falling into the water trough, thereby avoiding affecting the normal use of the liquid storage cavity.

[0015] 3. Beneficial effects

[0016] Compared with the existing technology, the advantages of this application are:

[0017] (1) This solution sets a fixed plate and an extrusion plate in the cabinet body so that the air in the first ventilation groove can be squeezed toward the air bag as the extrusion plate and the piston plate move, thereby inflating the air bag and sealing the inlet and outlet grooves to prevent insects and rats from entering the inner side of the distribution cabinet through the inlet and outlet grooves, thereby protecting the wires from damage.

[0018] (2) By setting a sliding groove and a slider in the cabinet body and the extrusion plate, the extrusion plate can only slide horizontally on the bottom wall of the inner cavity of the cabinet body, so as to avoid the extrusion plate from tilting as the telescopic rod is squeezed, resulting in a limited area of ​​mutual squeezing between the two airbags, making it impossible to completely seal the inlet and outlet grooves, thereby ensuring the sealing effect of the inlet and outlet grooves to a certain extent.

[0019] (3) By setting a telescopic rod between the cabinet door and the extrusion plate and setting its length, the extrusion plate can move as the cabinet door opens and closes, so that the airbag can immediately shrink and expand, open or block the inlet and outlet slots, and thus facilitate the inspection of wires, thereby improving work efficiency to a certain extent.

[0020] (4) By setting the spring of the telescopic rod to the normal state when it is extended, the telescopic rod can always push the extrusion plate to move toward the fixed plate when it is retracted, so that the inlet and outlet slots are always in a sealed state, preventing insects and rats from entering the inside of the distribution cabinet.

[0021] (5) By setting up a liquid storage chamber and aqueous solution in the airbag, the airbag has a certain cooling effect, which cools the entangled wires to avoid the wires being damaged by excessive temperature, thereby reducing the working cost to a certain extent.

[0022] (6) By arranging structures such as a liquid storage tank and a water trough on the fixed plate and the extrusion plate, the aqueous solution in the liquid storage chamber can return to the liquid storage tank as the airbag contracts, so as to avoid the airbag being overweight and causing it to sag, thereby preventing the airbag from being pressed by the distribution cabinet when the distribution cabinet is moved, thereby affecting the normal operation of the airbag.

[0023] (7) By setting the lower part of the liquid storage tank into an inverted cone shape, the sealing gasket cannot fall into the water trough with the flow of the aqueous solution, thereby avoiding affecting the sealing and squeezing of the aqueous solution in the liquid storage tank by the sealing gasket. At the same time, by making the connection between the liquid storage tank and the water trough into an arc structure, the pull rope can be prevented from excessive wear at the angle between the liquid storage tank and the water trough, causing it to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0025] Figure 2 for Figure 1 A magnified view of point A;

[0026] Figure 3 A partial cross-sectional view of the telescopic rod of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the extruded plate of this application;

[0028] Figure 5 A cross-sectional view of the airbag of this application;

[0029] Figure 6 A cross-sectional view of the fixing plate for this application;

[0030] Figure 7 for Figure 6 Enlarged view of point B;

[0031] Figure 8 This is a cross-sectional view of the fixing plate of this application from another perspective;

[0032] Figure 9 for Figure 8 Enlarged view of point C;

[0033] Figure 10 This is a schematic diagram of the cabinet door and cabinet body being opened 70 degrees in this application.

[0034] Description of the numbers in the figure:

[0035] 1. Cabinet body; 11. Entry and exit slots; 12. Slide slots; 2. Fixed plate; 21. First ventilation slot; 22. Liquid storage tank; 221. Second ventilation slot; 222. Water trough; 23. Sealing gasket; 24. Pull rope; 25. Arc-shaped slot; 3. Extrusion plate; 31. Slide rod; 32. Piston plate; 33. Slider; 4. Telescopic rod; 41. Thick rod; 42. Thin rod; 43. Spring; 5. Cabinet door; 6. Airbag; 61. Liquid storage chamber. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] Example 1:

[0038] See also Figure 1-10 , a distribution cabinet inlet and outlet line sealing device, including a cabinet 1, an inner cavity bottom wall of the cabinet 1 is provided with an inlet and outlet groove 11 in the middle, the inlet and outlet groove 11 is for the inlet and outlet of the wires, the inner cavity bottom wall of the cabinet 1 is provided with two slide grooves 12, the two slide grooves 12 are both located on the left side of the bottom wall of the cabinet 1, convenient for the extrusion plate 3 to move away from the fixed plate 2, so that the two piston plates 32 slide outward, extract the air in the airbag 6, release the confinement of the wires, open the inlet and outlet groove 11, and thus facilitate the maintenance of the wires, the inner cavity bottom wall of the cabinet 1 is fixedly installed with a fixed plate 2, the fixed plate 2 and the extrusion plate 3 are both ceramic plates, ceramics are not only heat-insulating, but also non-conductive. After the wires are damaged, electric sparks can be limited, giving workers time to rescue, the inner cavity bottom wall of the cabinet 1 is away from the fixed plate 2 is slidably connected to an extrusion plate 3 on one side, and the fixed plate 2 and the extrusion plate 3 have the same size, so that the volumes of the two air bags 6 after inflation are the same, thereby reducing the dead angle caused by the mutual squeezing of the two, and completing the sealing of the inlet and outlet grooves 11. Two sliders 33 are fixedly installed on the end of the extrusion plate 3 away from the fixed plate 2. The side of the slider 33 away from the extrusion plate 3 is an arc-shaped structure, which makes it easier for the slider 33 to slide in the slide groove 12 without being disturbed by the dust accumulated in the slide groove 12. The slider 33 is slidably connected in the slide groove 12 to slide the extrusion plate 3 and the cabinet 1 together. The slider 33 slides in the slide groove 12, so that the extrusion plate 3 can only slide horizontally on the bottom wall of the inner cavity of the cabinet 1, thereby avoiding deviation and affecting the sealing of the inlet and outlet grooves 11.

[0039] See also Figure 1 and Figure 10The rear part of the cabinet body 1 is rotatably connected to the cabinet door 5, and the cabinet door 5 and one side wall of the extrusion plate 3 are rotatably connected to the telescopic rod 4. When the cabinet door 5 is opened, the extrusion plate 3 can be pulled by the telescopic rod 4 to separate the extrusion plate 3 and the fixed plate 2, so that the two air bags 6 are contracted, and the inlet and outlet slots 11 are opened, thereby facilitating the maintenance of the wires and improving the work efficiency to a certain extent. When the angle between the cabinet door 5 and the cabinet body 1 is at 70 degrees, the telescopic rod 4 is at its maximum length. When the angle between the cabinet door 5 and the cabinet body 1 is opened to more than 70 degrees, the telescopic rod 4 is at its maximum length. The extrusion plate 3 will be pulled to the left by the telescopic rod 4, forcing the piston plate 32 to move outward, thereby causing the airbag 6 to shrink. When the angle between the cabinet door 5 and the cabinet body 1 is at 35 degrees, the telescopic rod 4 is at its shortest length. When the angle between the cabinet door 5 and the cabinet body 1 is closed to below 35 degrees, the telescopic rod 4 will push the extrusion plate 3 to move toward the fixed plate 2, causing the slide rod 31 and the piston plate 32 to move in the first ventilation groove 21, squeezing the air, thereby causing the two airbags 6 to inflate and expand, blocking the inlet and outlet grooves 11.

[0040] See also Figure 3 The telescopic rod 4 includes a thick rod 41 and a thin rod 42. The thick rod 41 is rotatably connected to the cabinet door 5, and the thin rod 42 is rotatably connected to the end of the extrusion plate 3 away from the fixed plate. The thin rod 42 is slidably connected to the inner cavity of the thick rod 41. The end of the thin rod 42 that penetrates into the inner cavity of the thick rod 41 is fixedly installed with a baffle to prevent the thin rod 42 from separating from the thick rod 41. The end of the thin rod 42 located in the inner cavity of the thick rod 41 and the end of the thick rod 41 away from the thin rod 42 are fixedly installed with a spring 43. When the telescopic rod 4 is retracted to a certain When the telescopic rod 4 is in an extended state, that is, when the telescopic rod 4 is at its maximum length, the spring 43 on the inside of the thick rod 41 is in a normal state. When the telescopic rod 4 is retracted, the telescopic rod 4 will push the squeezing plate 3 through the rebound force of the spring 43, causing it to slide horizontally, thereby inflating the airbag 6.

[0041] See also Figure 4 and Figure 6, the fixed plate 2 and the extrusion plate 3 are both provided with an arc-shaped groove 25 at one end close to each other, and the center line of the ellipse formed by the two arc-shaped grooves 25 is located on the same vertical line as the center line of the inlet and outlet grooves 11, so that the two air bags 6 can block the inlet and outlet grooves 11 at the same distance, that is, the two air bags 6 will squeeze each other to reduce the gap, thereby completing the sealing of the inlet and outlet grooves 11. The interior of the fixed plate 2 and the extrusion plate 3 are both provided with a first ventilation groove 21, and the two first ventilation grooves 21 are respectively located on the front and rear sides of the two arc-shaped grooves 25 on the same side. The inner surface of the arc-shaped groove 25 is fixedly installed with an air bag 6 that is in communication with the first ventilation groove 21. The air bag 6 is provided with an air inlet in the middle of one side close to the arc-shaped groove 25 to facilitate the air in the first ventilation groove 21 to enter The airbag 6 is filled with air, so that it is inflated, and the airbag 6 is coated with anti-static paint on the side away from the arc groove 25 to prevent the outer skin of the wire from being damaged and causing leakage, which may penetrate the liquid storage chamber 61 and cause the aqueous solution to overflow, thereby preventing damage to the distribution cabinet. The fixed plate 2 and the extrusion plate 3 are both fixedly installed with a sliding rod 31 at one end close to each other. The sliding rod 31 extends into the interior of the first ventilation groove 21 and is fixedly installed with a piston plate 32 that is slidably connected to the inner surface of the first ventilation groove 21. The sliding rod 31 and the piston plate 32 continue to penetrate into the first ventilation groove 21 as the extrusion plate 3 and the fixed plate 2 continue to approach each other, thereby squeezing the air in the first ventilation groove 21 toward the airbag 6, thereby allowing the airbag 6 to be inflated and expand, and sealing the inlet and outlet grooves 11.

[0042] Example 2:

[0043] See also Figure 5 and Figure 8-9, a liquid storage chamber 61 is provided inside the side where the two air bags 6 are close to each other, and the liquid storage chamber 61 is located in the middle of the side wall of the air bag 6 away from the arc groove 25, so that it is convenient to wrap the wires as the air bag 6 is inflated, and a water inlet groove is provided at the lower part of the liquid storage chamber 61 at the same level as the water groove 222, so that the aqueous solution can flow in the liquid storage chamber 61 and the liquid storage groove 22 as the air bag 6 expands and contracts. The interior of the liquid storage chamber 61 is filled with an aqueous solution, which can be a solution such as distilled water, to avoid conductive phenomena after the liquid storage chamber 61 ruptures, thereby protecting the distribution cabinet from damage to a certain extent. By filling the liquid storage chamber 61 with an aqueous solution, the air bag 6 can cool the wires when squeezing and wrapping them, so as to avoid multiple wires being entangled together. The temperature is too high, which causes damage to the wires. A liquid storage tank 22 is provided inside the fixed plate 2 and the extrusion plate 3. The upper inner diameter of the liquid storage tank 22 is larger than its lower inner diameter to prevent the sealing gasket 23 from falling into the water passage 222 with the flow of the aqueous solution, affecting the sealing and squeezing of the aqueous solution in the liquid storage tank 22 by the sealing gasket 23. A second ventilation groove 221 communicating with the outside is provided on the top wall of the liquid storage tank 22 to prevent the negative pressure above the sealing gasket 23 from being too large, affecting the downward squeezing of the aqueous solution by the sealing gasket 23. A water passage 222 communicating with the liquid storage cavity 61 is provided at the bottom of the liquid storage tank 22. The connection between the liquid storage tank 22 and the water passage 222 is an arc-shaped structure to prevent the pull rope 24 from excessively wearing at the angle between the liquid storage tank 22 and the water passage 222, causing it to break.

[0044] See also Figure 7-8 The inner surface of the liquid storage tank 22 is slidably connected with a sealing gasket 23, which floats on the water surface in the liquid storage tank 22. A pull rope 24 is fixedly installed at the lower end of the sealing gasket 23. A part of the pull rope 24 away from the sealing gasket 23 passes through the inner surface of the water groove 222 and is fixedly connected to the inner side of the airbag 6. A part of the pull rope 24 away from the sealing gasket 23 is connected to the inner surface of the side of the inner side of the airbag 6 away from the arc groove 25, so that the airbag 6 will pull the pull rope 24 at the first time when it is inflated, and the pull rope 24 is pulled from the water groove 222. The inner side of the airbag 6 is extended to expand the downward distance of the sealing gasket 23 so that the aqueous solution can fill the liquid storage chamber 61. When the airbag 6 is inflated, the sealing gasket 23 is pulled downward by the pull rope 24, thereby squeezing the aqueous solution accumulated inside the liquid storage tank 22 and transferring it to the liquid storage chamber 61. When the airbag 6 is evacuated and contracted, the aqueous solution in the liquid storage chamber 61 will be squeezed back into the liquid storage tank 22 to prevent the airbag 6 from being too heavy and sagging, thereby preventing the airbag 6 from being pressed by the distribution cabinet when the distribution cabinet is moved, affecting the normal operation of the airbag 6.

[0045] During use, the telescopic rod 4 is retracted by closing the cabinet door 5, and then the extrusion plate 3 moves toward the fixed plate 2 under the rebound action of the spring 43, so that the piston plate 32 penetrates into the first ventilation groove 21, squeezing the air toward the airbag 6, so that it can be inflated and expanded, and the inlet and outlet grooves 11 are blocked. During the expansion process of the airbag 6, the sealing gasket 23 will be pulled by the pull rope 24, so that the sealing gasket 23 moves downward to squeeze the aqueous solution in the liquid storage tank 22 and discharge it into the liquid storage cavity 61, so that the airbag 6 will cool the wires that pass through the inlet and outlet grooves 11 and are entangled together in the process of blocking the inlet and outlet grooves 11 to avoid high-temperature damage to the wires.

[0046] The above description is merely a preferred embodiment of the present application; however, the scope of protection of the present application is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present application, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present application shall be covered by the scope of protection of the present application.

Claims

1. A power distribution cabinet inlet and outlet sealing device, comprising a cabinet body (1), characterized in that: An inlet and outlet groove (11) is provided in the middle of the bottom wall of the inner cavity of the cabinet (1), a fixed plate (2) is fixedly installed on the bottom wall of the inner cavity of the cabinet (1), and an extrusion plate (3) is slidably connected to the side of the bottom wall of the inner cavity of the cabinet (1) away from the fixed plate (2), and an arc groove (25) is provided at the end of the fixed plate (2) and the extrusion plate (3) close to each other, and a first ventilation groove (21) is provided inside the fixed plate (2) and the extrusion plate (3), and an air bag (6) communicating with the first ventilation groove (21) is fixedly installed on the inner surface of the arc groove (25), and a sliding rod (31) is fixedly installed on the end of the fixed plate (2) and the extrusion plate (3) close to each other, and the sliding rod (31) extends inside the first ventilation groove (21) and is fixedly installed with a piston plate (32) slidably connected to the inner surface of the first ventilation groove (21); The rear portion of the cabinet body (1) is rotatably connected to a cabinet door (5), and the cabinet door (5) and a side wall of the extrusion plate (3) are rotatably connected to a telescopic rod (4); When the angle between the cabinet door (5) and the cabinet body (1) is 70 degrees, the telescopic rod (4) is at its maximum length; when the angle between the cabinet door (5) and the cabinet body (1) is 35 degrees, the telescopic rod (4) is at its shortest length; The telescopic rod (4) comprises a thick rod (41) and a thin rod (42), wherein the thin rod (42) is slidably connected to the inner cavity of the thick rod (41), and a spring (43) is fixedly mounted on one end of the thin rod (42) located in the inner cavity of the thick rod (41) and on the inner side of the thick rod (41) away from the thin rod (42); When the telescopic rod (4) is in an extended state, the spring (43) inside the thick rod (41) is in a normal state; A liquid storage cavity (61) is provided inside each of the two airbags (6) on a side close to each other, and the liquid storage cavity (61) is filled with an aqueous solution; The fixing plate (2) and the extrusion plate (3) are both provided with a liquid storage tank (22), the top wall of the liquid storage tank (22) is provided with a second ventilation tank (221) communicating with the outside, the bottom of the liquid storage tank (22) is provided with a water channel (222) communicating with the liquid storage cavity (61), the inner surface of the liquid storage tank (22) is slidably connected to a sealing gasket (23), the lower end of the sealing gasket (23) is fixedly installed with a drawstring (24), and a portion of the drawstring (24) away from the sealing gasket (23) passes through the inner surface of the water channel (222) and is fixedly connected to the inner side of the airbag (6).

2. A power distribution cabinet inlet and outlet sealing device according to claim 1, characterized in that: The inner bottom wall of the cabinet (1) is provided with two sliding grooves (12), and one end of the extrusion plate (3) away from the fixed plate (2) is fixedly mounted with two sliding blocks (33), and the sliding blocks (33) are slidably connected in the sliding grooves (12) to slidably connect the extrusion plate (3) and the cabinet (1) together.

3. The sealing device for inlet and outlet lines of a power distribution cabinet according to claim 1, characterized in that: The connection between the liquid storage tank (22) and the water passage tank (222) is an arc-shaped structure.

4. A power distribution cabinet inlet and outlet sealing device according to claim 3, characterized in that: The upper inner diameter of the liquid storage tank (22) is larger than the lower inner diameter thereof.

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