Power distribution power cabinet and use method thereof

Abstract

The invention relates to the technical field of electrical engineering, in particular to a power distribution power cabinet and a using method thereof.The power distribution power cabinet comprises a base assembly, the base assembly is used for being connected with a power cabinet body so that the power cabinet body can be connected with an external power installation area through the base assembly, and the bottom of a protective film is connected with the outer edge of the base assembly; and the protective film wraps the power cabinet main body. In rainstorm weather, the unfolding height of the protective film is higher than the external water level, water is isolated outside and does not affect the power cabinet body, when the water level is high, the power cabinet body is integrally wrapped by the protective film, and an opening in the upper end of the protective film is closed through the control assembly. In this way, the protective film can wrap the power cabinet body in a closed state, and the protective film can be inflated, so that the impact force of solids in water flow on the power cabinet body is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical engineering, in particular to a power distribution power cabinet and a use method thereof. BACKGROUND

[0002] The patent with publication (announcement) number CN212968714U discloses a power distribution cabinet with an automatic waterproof seat, relates to the technical field of power distribution cabinets, and aims to solve the problem that the waterproof floating part is always exposed to the outside and is easy to be damaged. The technical scheme main points are: the power distribution cabinet comprises a waterproof base, a waterproof floating part, and a waterproof protective film located in the waterproof floating part. The waterproof base is provided with baffles around the periphery for protecting the waterproof floating part. The waterproof base is provided with containing grooves for containing the baffles. The baffles are rotatably connected to the inner walls of the containing grooves and are slidably connected to the inner walls.

[0003] The patent with publication (announcement) number CN208738641U discloses a waterproof power distribution cabinet body, relates to a power distribution device, and has the technical scheme main points that the cabinet body is fixed with a waterproof base at the bottom. A waterproof buoyancy frame is slidably connected to the cabinet body above the waterproof base. The waterproof buoyancy frame and the waterproof buoyancy frame are sealingly connected to the waterproof film outside the cabinet body. The utility model has the effect of improving the waterproof performance of the power distribution cabinet at a higher water level.

[0004] The waterproof film top of the above-mentioned prior art is connected with a floating plate of a mouth-shaped structure, and the floating plate structure is fixed and unchangeable. When the water level covers and floods the power cabinet or is relatively high, the water outside enters into contact with the power cabinet through the opening at the top of the floating plate, and the upper end of the waterproof film is in an open state. The function of the waterproof film is relatively single.

[0005] Therefore, a power distribution power cabinet and a use method thereof are proposed to solve the problems in the above-mentioned prior art. SUMMARY

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a base assembly is used to connect with a power cabinet main body, so that the power cabinet main body is connected with an external power installation area through the base assembly; A protective film is connected with the outer edge of the base assembly at the bottom, and the protective film wraps the power cabinet main body inside; A cabinet door is hingedly connected to the power cabinet main body, and a plurality of surface acoustic wave gas sensors are connected to the inner side of the cabinet door for detecting the temperature of the parts in the power cabinet main body; A ventilation area is arranged at the top of the power cabinet main body; A pulling assembly is arranged at the top of the ventilation area. The other end of the protective film away from the base assembly is connected with a control assembly bottom area, and the control assembly is connected with the pulling assembly; The control assembly comprises a first sealing frame, and a first shielding plate is fixedly connected to the top of the first sealing frame. The two groups of first sealing frames close to each other are connected through a first telescopic pipe, and the spaces in the first sealing frames and the second sealing frame are communicated through a second telescopic pipe. A second shielding plate is fixedly connected to the top of the second sealing frame. The top of the second sealing frame is connected with a vacuum pump through a one-way valve. When the control assembly is located at the top region of the ventilation area, the upper end opening of the protective film is closed through the control assembly, so that the protective film wraps the power cabinet body in a sealed state, and the protective film can be inflated to reduce the impact force of the solid in the water flow on the power cabinet body.

[0007] In a possible implementation, the base assembly comprises a base, and the base is connected with the power cabinet body. The base is hollowed out to form a containing cavity, and a first one-way valve and a second one-way valve are arranged on the side wall of the base and communicate with the containing cavity. A plurality of groups of third one-way valves are equidistantly arranged on the top of the base close to the side wall of the power cabinet body.

[0008] In a possible implementation, the pulling assembly comprises a connecting frame, and the connecting frame is fixedly connected with the top of the ventilation area. The connecting frame is provided with through holes at the left and right ends of the top thereof, and a winding machine is bolted in the connecting frame.

[0009] In a possible implementation, a driving member is wound on the winding machine, and one end of the driving member extends outward through the through hole and is connected with the first sealing frame. The top of the connecting frame is embedded with a threaded hole.

[0010] In a possible implementation, a three-way electromagnetic valve arranged on the top of the second sealing frame is connected with one end of the suction pump. One connection end of the three-way electromagnetic valve communicates with the space in the second sealing frame. The other connection end of the three-way electromagnetic valve is connected with a flow guide hose, and the other end of the flow guide hose is connected with the upper end of the protective film, for conveying air into the protective film. Through the three-way electromagnetic valve, the suction pump conveys air into the protective film, so that the protective film is inflated and expanded, the outer surface of the power cabinet body is changed from a cuboid to an elliptical structure, the streamlined surface guides the airflow to pass smoothly, the drag coefficient is greatly reduced, and the stability of the power cabinet body during hoisting is improved.

[0011] In a possible implementation, lifting lugs are rotatably connected to the first sealing frame and the second sealing frame, and a threaded region matched with the threaded hole is arranged at the bottom region of the lifting lug. The first sealing frame and the second sealing frame are connected with the protective film through the first telescopic pipe and the second telescopic pipe, and form a variable-diameter quadrilateral, which is used for adjusting the size of the upper opening of the protective film.

[0012] In a possible implementation, the sidewalls of the first sealing frame and the second sealing frame are provided with a matching assembly. The matching assembly is composed of a rubber film and a neodymium iron boron magnet. The neodymium iron boron magnet is embedded in the sidewalls of the first sealing frame and the second sealing frame, and the surface of the sidewalls is connected with the edge of the rubber film. When the first sealing frame and the second sealing frame are close to each other, the rubber films on the sidewalls of the first sealing frame and the second sealing frame are pressed and magnetically attracted to each other through the neodymium iron boron magnet, so that the rubber films improve the sealing performance of the gap when the first sealing frame and the second sealing frame are connected.

[0013] In a possible implementation, the sidewalls of the first sealing frame and the second sealing frame are slidingly connected with a driving rack, one end of the driving rack is fixedly connected with a neodymium iron boron magnet, and the bottom of the driving rack is fixedly connected with a sealing rod. The first sealing frame, the second sealing frame, the first telescopic pipe and the second telescopic pipe are connected with the top of the protective film.

[0014] A use method of the power distribution power cabinet, comprising the following steps: Step one: install the power cabinet body in the installation area outside through the base assembly; Step two: when a large amount of rainfall is encountered outside, the control assembly is moved to adjust the height by pulling the pulling assembly, the control assembly drives the protective film to unfold upward, so that the protective film isolates the rainfall water outside from the power cabinet body; Step three: after the control assembly is moved to the ventilation area by the pulling assembly, the control assembly operates to close the upper opening of the protective film, so that the protective film wraps the power cabinet body as a whole.

[0015] Compared with the prior art, the power distribution power cabinet and the use method thereof have the following beneficial effects: 1、When heavy rain is encountered, the unfolding height of the protective film is higher than the water level outside, so that the water is isolated outside and does not affect the power cabinet body, and when the water level is high, the protective film wraps the power cabinet body as a whole, and the upper opening of the protective film is closed through the control assembly, so that the protective film wraps the power cabinet body in a closed state, and the protective film can be inflated to reduce the impact force of solids in the water flow on the power cabinet body.

[0016] 2. When the protective membrane completely encloses the main body of the power cabinet and the control component closes the opening at the top of the protective membrane, carbon dioxide enters the cavity through the second one-way valve when the main body of the power cabinet catches fire. The cavity is then transported upwards to the outer periphery of the main body of the power cabinet through the third one-way valve, filling the space between the main body of the power cabinet and the protective membrane with carbon dioxide. As the oxygen inside the protective membrane is rapidly consumed, the carbon dioxide quickly fills the protective membrane and completely encloses the main body of the power cabinet, causing the ignition source inside the main body of the power cabinet to quickly extinguish the fire due to oxygen depletion. Once the protective membrane completely encloses the main body of the power cabinet and the control components close the opening at the top of the protective membrane, air is injected through the first one-way valve. An external flow rate sensor detects whether there is air leakage on the surface of the protective membrane and can also detect whether the protective membrane is damaged, facilitating the maintenance and replacement of the protective membrane.

[0017] 3. When the first sealing frame and the second sealing frame are close to each other, the first baffle plate, the second baffle plate, the mating components, the drive rack, the sealing rod, and the neodymium iron boron magnet cooperate with each other to improve the sealing performance when the first sealing frame and the second sealing frame are connected, thereby improving the sealing performance when the upper opening of the protective film is closed.

[0018] 4. In this invention, the lifting ropes of the external lifting equipment are connected to the lifting lugs, which makes it convenient to lift the main body of the power cabinet when a protective film is covered on the outside of the main body of the power cabinet. This avoids the protective film covering the lifting lugs originally provided on the main body of the power cabinet, thus preventing the protective film from hindering the connection between the lifting lugs and the external lifting device. Air can be pumped into the protective membrane via a three-way solenoid valve using a suction pump, causing the membrane to inflate and transform the main body of the power cabinet from a cuboid to an elliptical structure. The streamlined surface guides the airflow smoothly, significantly reducing the drag coefficient and improving the stability of the power cabinet during hoisting, thus enhancing the functionality of the protective membrane. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ; Figure 4 This is a schematic diagram of the structure of the present invention. Figure 4 ; Figure 5 is a schematic diagram of the flat structure of the present application; Figure 6 is a schematic diagram of the flat structure of the present application; Figure 5 is a B-B sectional view of the present application in the flat structure; Figure 7 is a B-B sectional view of the present application in the flat structure; Figure 5 is an A-A sectional view of the present application in the flat structure; Figure 8 is a schematic diagram of the control assembly in use of the present application Figure 1 ; Figure 9 is a schematic diagram of the control assembly in use of the present application Figure 2 ; Figure 10 is a schematic diagram of the control assembly structure of the present application; Figure 11 is a schematic diagram of the control assembly structure of the present application;

[0020] In the figure: 1, base assembly; 2, protective film; 3, power cabinet main body; 4, cabinet door; 5, ventilation area; 6, pulling assembly; 7, control assembly; base; 12, first one-way valve; 121, second one-way valve; 13, containing cavity; 14, third one-way valve; adapter frame; 62, through hole; 63, winding machine; 64, threaded hole; 65, driving piece; 71, first sealing frame; 72, first shielding plate; 73, first telescopic pipe; 74, second telescopic pipe; 75, second sealing frame; 76, second shielding plate; 77, vacuum pump; 78, suction pump; 79, three-way electromagnetic valve; 710, flow guide hose; 711, lifting lug; 712, matching assembly; 713, driving rack; 714, sealing rod; 715, neodymium iron boron magnet. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, 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 those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figure 1 - Figure 10 The power distribution power cabinet and the use method thereof in the embodiment include: a base assembly 1, which is used to be connected with a power cabinet main body 3, so that the power cabinet main body 3 is connected with an external power installation area through the base assembly 1; The bottom of the protective film 2 is connected with the outer edge of the base assembly 1, and the protective film 2 wraps the power cabinet body 3 inside; the protective film 2 comprises an outer layer and an inner layer, the outer layer is a waterproof film, the surface of the waterproof film is provided with a rubber layer, and the inner layer is a fireproof layer, thereby improving the fire resistance of the inner layer of the protective film 2; Wherein, the power cabinet body 3 is hinged with a cabinet door 4, and the inner side of the cabinet door 4 is connected with a plurality of groups of surface acoustic wave gas sensors for detecting the temperature of each point in the power cabinet body 3; Specifically, the surface acoustic wave gas sensor is connected with a surface acoustic wave temperature measurement system, and the surface acoustic wave temperature measurement system comprises a local and remote network architecture, wherein the local system is composed of a monitoring layer, a data transmission layer and a field device layer; The field device comprises a passive wireless sensor surface acoustic wave gas sensor and a data collector, each sensor corresponds to a temperature measurement point, and the number of sensing heads is configured according to requirements; the data collector collects sensing radio frequency signals, receives temperature frequency signals, processes data, and then transmits to a wireless temperature measurement gateway, and then uploads to a monitoring server for display, analysis, recording and alarm processing; the monitoring server applies a dynamic temperature rise early warning model to diagnose the operating condition of the switch cabinet, and when the set threshold is exceeded, the alarm system sends an alarm to the operation and maintenance personnel; the structure is as shown in Figure 11 .

[0023] Further, as shown in Figures 1-10 , the top of the power cabinet body 3 is provided with a ventilation area 5; The top of the ventilation area 5 is provided with a pulling assembly 6, the other end of the protective film 2 away from the base assembly 1 is connected with the bottom area of a control assembly 7, and the control assembly 7 is connected with the pulling assembly 6; the pulling assembly 6 controls the deployment height of the protective film 2 by adjusting the height of the control assembly 7; The base assembly 1 comprises a base 11, and the base 11 is connected with the power cabinet body 3; The base 11 is hollowed out to form a containing cavity 13, and the sidewall of the base 11 is provided with a first one-way valve 12 and a second one-way valve 121 which are in communication with the containing cavity 13; After the power cabinet is installed to the installation area, the second one-way valve 121 is connected with the carbon dioxide protective gas delivery pipe outside; When the power cabinet body 3 is wrapped inside by the protective film 2 and the upper end opening of the protective film 2 is closed by the control assembly 7, and the power cabinet body 3 is on fire, the carbon dioxide enters the inside of the containing cavity 13 through the second one-way valve 121, so that the containing cavity 13 is transmitted to the outer periphery of the power cabinet body 3 through the third one-way valve 14, so that the power cabinet body 3 is filled with carbon dioxide between the power cabinet body 3 and the protective film 2, and because the oxygen in the wrapped inside of the protective film 2 is rapidly consumed, the carbon dioxide is rapidly filled in the protective film 2 and the power cabinet body 3, so that the fire source in the power cabinet body 3 is rapidly oxygen-deficient and extinguished; When the protective film 2 wraps the power cabinet body 3 as a whole and the control assembly 7 closes the upper opening of the protective film 2, air is injected through the first one-way valve 12, and whether the surface of the protective film 2 is exposed to air and whether the protective film 2 is damaged can be detected through an external flow rate sensor, thereby facilitating the maintenance and replacement of the protective film 2. A plurality of groups of third one-way valves 14 are arranged equidistantly on the top of the base 11 near the side wall of the power cabinet body 3.

[0024] Meanwhile, as shown in Figures 1-10 , the pulling assembly 6 comprises a connecting frame 61 fixedly connected to the top of the ventilation area 5. The connecting frame 61 is provided with through holes 62 at the left and right ends of the top thereof, and a winding machine 63 is screw-connected in the connecting frame 61, the driving member 65 is wound on the winding machine 63, and one end of the driving member 65 extends outward through the through hole 62 and is connected with the first sealing frame 71. The driving member 65 is specifically a steel wire rope; and a threaded hole 64 is embedded in the top of the connecting frame 61. Specifically, by starting the winding machine 63, the winding machine 63 winds the driving member 65, so that the two groups of driving members 65 pull the first sealing frame 71 upward, the first sealing frame 71 drives the control assembly 7 to move upward as a whole, then when the height of the unfolded protective film 2 is adjusted to a suitable position, the operation of the winding machine 63 is stopped, the first sealing frame 71 remains in place, in the case of heavy rain, the height of the unfolded protective film 2 is higher than the water level outside, so that the water is isolated outside and does not affect the power cabinet body 3, and when the water level is high, the protective film 2 wraps the power cabinet body 3 as a whole, and the upper opening of the protective film 2 is closed by the control assembly 7, so that the protective film 2 wraps the power cabinet body 3 in a sealed state, and the protective film 2 can be inflated, thereby reducing the impact force of the solid in the water flow on the power cabinet body 3.

[0025] Further, as shown in Figures 1-4 and Figures 8-10 , the control assembly 7 comprises a first sealing frame 71, and a first shielding plate 72 is fixedly connected to the top of the first sealing frame 71; a water level sensor is arranged on the first sealing frame 71. A battery and a controller are arranged in the first sealing frame 71 and the connecting frame 61, and a 5G transmission module is arranged on the controller, thereby facilitating the control from outside. The two groups of first sealing frames 71 close to each other are connected through a first telescopic pipe 73, and the space in the first sealing frame 71 and the second sealing frame 75 is communicated through a second telescopic pipe 74; the gas flow channels between the first sealing frame 71 and the first telescopic pipe 73 and between the second sealing frame 75 and the second telescopic pipe 74 form a mouth-shaped structure. A second shielding plate 76 is fixedly connected to the top of the second sealing frame 75. The structure of the first shielding plate 72 and the second shielding plate 76 is matched, the first shielding plate 72 is in L-shaped structure, the second shielding plate 76 is in concave structure, and a rubber layer is arranged in the second shielding plate 76; when the first sealing frame 71 and the second sealing frame 75 are close to each other, the first sealing frame 71 drives the first shielding plate 72 to be inserted into the second shielding plate 76 on the second sealing frame 75, so that the gap between the first sealing frame 71 and the second sealing frame 75 is covered and shielded when they are in contact; The top of the second sealing frame 75 is connected with the vacuum pump 77 through a one-way valve; Specifically, when the rolling machine 63 pulls the first sealing frame 71 to move to the top of the ventilation area 5, the protective film 2 wraps the power cabinet body 3 as a whole, the vacuum pump 77 is started, the air in the first sealing frame 71 and the second sealing frame 75 is pumped out, the first telescopic pipe 73 and the second telescopic pipe 74 between the second sealing frame 75 and the first sealing frame 71 are contracted and closed, the size of the opening at the upper end of the protective film 2 is adjusted, the second sealing frame 75 and the first sealing frame 71 are pressed and contacted with each other, and the top of the protective film 2 is pressed and closed.

[0026] Further, as shown in the drawings, Figures 8-10 The three-way electromagnetic valve 79 arranged at the top of the second sealing frame 75 is connected with one end of the suction pump 78, one connecting end of the three-way electromagnetic valve 79 is in communication with the space in the second sealing frame 75, and the other connecting end of the three-way electromagnetic valve 79 is connected with the flow guide hose 710, and the other end of the flow guide hose 710 is connected with the upper end of the protective film 2; The first sealing frame 71 and the second sealing frame 75 are rotatably connected with the lifting lug 711, and the bottom region of the lifting lug 711 is provided with a threaded region matched with the threaded hole 64; When the control assembly 7 is moved above the ventilation area 5 and the upper end of the protective film 2 is pressed and closed by the control assembly 7, the power cabinet body 3 needs to be hoisted, the lifting lug 711 is screwed with the threaded hole 64, and then the lifting rope in the external hoisting equipment is connected with the lifting lug 711, so that the power cabinet body 3 can be hoisted when the protective film is arranged on the outer surface of the power cabinet body 3, and the protective film is prevented from covering the lifting lug 711 arranged on the original power cabinet body 3, so that the protective film does not hinder the connection between the lifting lug 711 and the external hoisting device; The air in the protective film 2 is pumped by the suction pump 78 through the three-way electromagnetic valve 79, the protective film 2 is inflated and expanded, the outer surface of the power cabinet body 3 is changed from a rectangular body to an elliptical structure, the streamlined surface guides the airflow to pass smoothly, the drag coefficient is greatly reduced, and the stability of the power cabinet body 3 during hoisting is improved; The first sealing frame 71 and the second sealing frame 75 are connected with the first telescopic pipe 73 and the second telescopic pipe 74 to form a quadrilateral with a variable diameter; Finally, as shown in the drawings, Figures 8-10As shown, the side walls of the first sealing frame 71 and the second sealing frame 75 are provided with a matching assembly 712; The matching assembly 712 is composed of a rubber film and a neodymium iron boron magnet 715, the neodymium iron boron magnet 715 is embedded in the side walls of the first sealing frame 71 and the second sealing frame 75, and the surface of the side walls of the first sealing frame 71 and the second sealing frame 75 is connected with the edge of the rubber film; When the first sealing frame 71 and the second sealing frame 75 are close to each other, the rubber films on the side walls of the first sealing frame 71 and the second sealing frame 75 are squeezed and magnetically attracted to each other through the neodymium iron boron magnet 715, so as to improve the sealing performance of the gap between the first sealing frame 71 and the second sealing frame 75 when they are connected; Among them, the side walls of the first sealing frame 71 and the second sealing frame 75 are slidably connected with a driving rack 713, one end of the driving rack 713 is fixedly connected with a neodymium iron boron magnet 715, and the bottom of the driving rack 713 is fixedly connected with a sealing rod 714; When the first sealing frame 71 and the second sealing frame 75 are close to each other, the neodymium iron boron magnets 715 on the driving racks 713 of the first sealing frame 71 and the second sealing frame 75 are magnetically attracted to each other to drive the driving racks 713 to move to the middle area, and the two groups of driving racks 713 drive the two groups of sealing rods 714 to be squeezed to each other, so as to squeeze and limit the edge of the protective film 2 at the lower area of the first sealing frame 71 and the second sealing frame 75, and improve the sealing performance of the edge area; The first sealing frame 71, the second sealing frame 75, the first telescopic pipe 73 and the second telescopic pipe 74 are connected with the top of the protective film 2.

[0027] The mounting mode, the connecting mode or the setting mode disclosed in the embodiment are all common mechanical connection modes, as long as the beneficial effects can be achieved, and therefore the specific structural components and working principles will not be described in detail.

[0028] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element preceded by "comprises... " does not exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0029] ​While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A power distribution power cabinet, characterized by: The base assembly (1) is used for connecting with the power cabinet body (3), so that the power cabinet body (3) is connected with the external power installation area through the base assembly (1); The protective film (2) is connected with the outer edge of the base assembly (1), and the protective film (2) wraps the power cabinet body (3) inside; The cabinet door (4) is hinged on the power cabinet body (3), and a plurality of groups of surface acoustic wave gas sensors are connected to the inner side of the cabinet door (4) for detecting the temperature of the parts in the power cabinet body (3); The power cabinet body (3) is provided with a ventilation area (5) on the top; The ventilation area (5) is provided with a pulling assembly (6) on the top, the other end of the protective film (2) away from the base assembly (1) is connected with the bottom area of the control assembly (7), and the control assembly (7) is connected with the pulling assembly (6); The control assembly (7) comprises a first sealing frame (71), and the top of the first sealing frame (71) is fixedly connected with a first shielding plate (72); The first sealing frame (71) and the second sealing frame (75) are connected through the second expansion pipe (74); The second sealing frame (75) is fixedly connected with a second shielding plate (76) on the top; The second sealing frame (75) is connected with a vacuum pump (77) through a one-way valve on the top; When the control assembly (7) is located in the top area of the ventilation area (5), the opening of the upper end of the protective film (2) is closed through the control assembly (7), so that the protective film (2) can wrap the power cabinet body (3) in a sealed state, and the protective film (2) can be inflated to reduce the impact force of the solid in the water flow on the power cabinet body (3).

2. A power distribution switchgear according to claim 1, characterized in that: The base assembly (1) comprises a base (11), and the base (11) is connected with the power cabinet body (3); The base (11) is provided with a first one-way valve (12) and a second one-way valve (121) which are in communication with the accommodating cavity (13) and are arranged on the side wall of the base (11); The base (11) is provided with a plurality of third one-way valves (14) which are equidistantly arranged on the top of the base (11) and are close to the side wall of the power cabinet body (3).

3. A power distribution switchgear according to claim 1, characterized in that: The pulling assembly (6) comprises a connecting frame (61), and the connecting frame (61) is fixedly connected with the top of the ventilation area (5); The connecting frame (61) is provided with through holes (62) at the left and right ends of the top of the connecting frame (61), and a winding machine (63) is screw-connected in the connecting frame (61).

4. A power distribution switchgear according to claim 3, characterised in that: A driving member (65) is wound on the winding machine (63), and one end of the driving member (65) extends outward through the through hole (62) and is connected with the first sealing frame (71); The top of the connecting frame (61) is embedded with a threaded hole (64).

5. A power distribution switchgear according to claim 1, characterized in that: A three-way electromagnetic valve (79) provided on the top of the second sealing frame (75) is connected with one end of a suction pump (78); One connection end of the three-way electromagnetic valve (79) is in communication with the space in the second sealing frame (75); The other connection end of the three-way electromagnetic valve (79) is connected with a flow guide hose (710), and the other end of the flow guide hose (710) is connected with the upper end of the protective film (2) for conveying air into the protective film (2); Through the suction pump (78) through the three-way solenoid valve (79) to the protective film (2) into the air, the protective film (2) inflation, the power cabinet body (3) the whole surface from the cuboid into an oval structure, the streamlined surface guide air flow smoothly through, the drag coefficient is greatly reduced, and can improve the stability of the power cabinet body (3) in the lifting process.

6. A power distribution switchgear according to claim 5, wherein: The first sealing frame (71) and the second sealing frame (75) are rotatably connected with the lifting lug (711), and the bottom region of the lifting lug (711) is provided with a threaded region matched with the threaded hole (64); The first sealing frame (71) and the second sealing frame (75) are connected through the first telescopic pipe (73) and the second telescopic pipe (74) to form a quadrilateral with variable diameter, which is used for adjusting the size of the opening at the upper end of the protective film (2).

7. A power distribution switchgear according to claim 6, characterised in that: The side walls of the first sealing frame (71) and the second sealing frame (75) are provided with a matching assembly (712); The matching assembly (712) is composed of a rubber film and a neodymium iron boron magnet (715); The neodymium iron boron magnet (715) is embedded in the side walls of the first sealing frame (71) and the second sealing frame (75), and the surface of the side walls of the first sealing frame (71) and the second sealing frame (75) is connected with the edge of the rubber film; When the first sealing frame (71) and the second sealing frame (75) are close to each other, the rubber films on the side walls of the first sealing frame (71) and the second sealing frame (75) are extruded and magnetically attracted by the neodymium iron boron magnet (715), so that the rubber films improve the sealing performance of the gap when the first sealing frame (71) and the second sealing frame (75) are connected.

8. A power distribution switchgear according to claim 6, characterized in that: The side walls of the first sealing frame (71) and the second sealing frame (75) are slidably connected with a driving rack (713), one end of the driving rack (713) is fixedly connected with a neodymium iron boron magnet (715), and the bottom of the driving rack (713) is fixedly connected with a sealing rod (714); The first sealing frame (71), the second sealing frame (75), the first telescopic pipe (73) and the second telescopic pipe (74) are connected with the top of the protective film (2).

9. A method of using a power distribution power cabinet, the method comprising: providing a power distribution power cabinet according to claim 1; and using the power distribution power cabinet. The method comprises the following steps: Step one: install the power cabinet body (3) in the installation area outside through the base assembly (1); Step two: when a large amount of rainfall is encountered outside, pull the assembly (6) to control the movement of the control assembly (7) to adjust the height, and the control assembly (7) drives the protective film (2) to unfold upward, so that the protective film (2) isolates the rainfall and water outside from the power cabinet body (3); Step three: after the control assembly (7) is moved to the ventilation area (5) region, the control assembly (7) operates to close the opening at the upper end of the protective film (2), so that the protective film (2) wraps the power cabinet body (3) as a whole.

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