Auxiliary cleaning equipment for liquefied gas storage container

Abstract

The invention relates to auxiliary cleaning equipment for a liquefied gas storage container, and belongs to the technical field of cleaning equipment. The auxiliary cleaning equipment for the liquefied gas storage container comprises a moving seat, a fixed plate and a water tank, the top of the moving seat is fixedly provided with the fixed plate, the water tank and a moving cleaning mechanism, and the moving cleaning mechanism comprises two electric push rods, two moving plates, a carrying assembly and a cleaning assembly; through cooperation of two electric push rods and a movable plate, the position of the cleaning assembly can be flexibly adjusted, liquefied gas storage containers of different sizes can be cleaned, the storage containers are moved and rotated through an electric conveying belt of the carrying assembly, and the supporting effect of a contact frame is combined, so that the weight is shared, and the working efficiency is improved. And the stability of the storage container in the cleaning process is ensured, especially in a frequent use scene, the stress and abrasion of the cleaning equipment in long-time operation are effectively reduced, and therefore the service life of the whole equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and particularly to an auxiliary cleaning equipment for a liquefied gas storage container. Background Art

[0002] Natural gas refers to various gases existing in nature, including gases formed by natural processes in the atmosphere, hydrosphere, and lithosphere. Natural gas is usually stored in natural gas tanks. During the long-term use of natural gas storage tanks, a large amount of dust and impurities will accumulate on the tank surface, resulting in a dirty appearance, affecting the normal operation and service life of the equipment. Therefore, it is necessary to regularly clean the tank body using cleaning equipment; As shown in the reference case "A Fast Auxiliary Cleaning Equipment for an Industrial Natural Gas Storage Tank" with the publication number "CN118699018B", a self-adjusting water delivery component, a multi-component cleaning component, and a position control component are provided. By setting a reciprocating cleaning unit and cooperating with a clamping and surrounding unit, the automatic cleaning of the tank surface can be completed, and it can be applied to tanks of different sizes. Moreover, the entire cleaning process does not require the movement of the tank body, ensuring the cleaning efficiency of the storage tank and reducing manual consumption; Existing auxiliary cleaning equipment usually needs to lift the storage tank to a specific position during the cleaning process. Especially when cleaning the tank surface, the equipment needs to bear the weight of the storage tank. Since natural gas storage tanks are usually made of heavy metal materials and the cleaning operation time is long, the equipment bears a large pressure and load for a long time, which will accelerate the wear of the key components of the equipment. Especially when used frequently, the service life of the equipment will be shortened. Summary of the Invention

[0003] Based on this, in view of the problem that when cleaning the surface of a storage container, the equipment needs to bear the weight of the storage container. Since liquefied gas storage containers are usually made of heavy metal materials and the cleaning operation time is long, the equipment bears a large pressure and load for a long time, which will accelerate the wear of the key components of the equipment. Especially when used frequently, the service life of the equipment will be shortened, it is necessary to provide an auxiliary cleaning equipment for a liquefied gas storage container.

[0004] An auxiliary cleaning equipment for a liquefied gas storage container includes: A moving seat, a fixed plate, and a water tank. The top of the moving seat is fixedly installed with a fixed plate and a water tank respectively; A moving cleaning mechanism, which includes two electric push rods, two movable plates, a handling component, and a cleaning component. The two electric push rods are respectively arranged on both sides of the fixed plate, and the two movable plates are respectively fixedly connected to the two electric push rods. The handling component is located on one side of the two movable plates, and the cleaning component is located between the two movable plates; Among them, the handling component includes a sealing frame fixedly installed on one side of the movable plate. An electric conveyor belt is fixedly installed on one side of the sealing frame, and a contact frame is fixedly installed on one side of the movable seat.

[0005] In one embodiment, the handling component further includes a fixing frame fixedly installed outside the electric conveyor belt. A support plate is fixedly installed inside the fixing frame, and the support plate is located inside the electric conveyor belt. A plurality of contact wheels are rotatably installed on both sides of the support plate. Both of the electric push rods are slidably installed on one side of the fixing plate. A bidirectional screw rod is rotatably installed on one side of the fixing plate. The bidirectional screw rod is threadedly connected to one side of the two electric push rods. A first motor is fixedly installed on one side of the fixing plate. The output end of the first motor is connected to the surface of the bidirectional screw rod through a pulley and a belt. An air pump is fixedly installed outside the movable plate. A piston plate is slidably installed inside the sealing frame. The electric conveyor belt is fixedly installed on one side of the piston plate. The air pump is communicated with the inside of the sealing frame.

[0006] In one embodiment, a plurality of balls are rotatably installed on the surface of the contact plate. Two connecting plates are fixedly installed on one side of the contact plate, and the other sides of the two connecting plates are fixedly connected to the same guiding plate.

[0007] In one embodiment, a plurality of guiding wheels are rotatably installed on the surfaces of the two connecting plates, and a plurality of guiding rings are fixedly installed on the outside of the guiding wheels.

[0008] In one embodiment, both the contact frame and the contact plate are arranged in a disc shape. The contact plate is slidably connected to the contact frame. A plurality of springs are fixedly installed inside the contact frame, and the other ends of the plurality of springs are fixedly connected to the contact plate.

[0009] In one embodiment, a pressure sensor is fixedly installed inside the contact frame, and the sensing end of the pressure sensor is in contact with the contact plate.

[0010] In one embodiment, the cleaning component includes an electric rotating wheel fixedly installed on one side of the fixing plate. The electric rotating wheel is located between the two electric conveyor belts. A plurality of cleaning brush strips are fixedly installed on the outside of the electric rotating wheel.

[0011] In one embodiment, the cleaning brush strips are arranged in a ring around the surface of the electric rotating wheel, and the cross sections of the plurality of cleaning brush strips are all arranged in a crescent shape.

[0012] In one embodiment, two movable frames are fixedly installed on one side of the fixing plate. A driving plate is arranged on one side of each of the two movable frames. A plurality of high-pressure nozzles are fixedly installed on one side of the driving plate, and all of the plurality of high-pressure nozzles are connected to the water tank.

[0013] In one of the embodiments, a second motor is fixedly installed on the top of the movable frame. The output end of the second motor extends into the interior of the movable frame and is fixedly connected to a driving plate, and the driving plate is rotatably connected to the inner wall of the movable frame. Sealing tapes are fixedly connected to both sides of the driving plate and the inner wall of the movable frame.

[0014] For the above-mentioned auxiliary cleaning equipment for liquefied gas storage containers, through the cooperation of the electric push rod and the movable plate in the mobile cleaning mechanism, the cleaning assembly can flexibly adjust its position to clean storage containers of different sizes. Through the electric conveyor belt of the handling assembly, the storage container is moved and rotated, and combined with the supporting effect of the contact frame, it not only shares the weight but also ensures the stability of the storage container during the cleaning process. Especially in frequently used scenarios, it effectively reduces the stress and wear of the storage container cleaning equipment during long-term operation, thereby extending the overall service life of the equipment.

[0015] When the storage container moves onto the surface of the contact frame, the storage container contacts the contact plate and multiple ball bearings. The contact plate moves downward and simultaneously presses the pressure sensor, which can detect the weight of the storage container during the rotation of the storage container. According to the sensed weight change, the pressure sensor timely feeds back the load information of the storage container to ensure that the weight does not exceed the bearing limit of the contact frame, thereby avoiding the reduction of the equipment life due to excessive weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the mobile cleaning mechanism structure of the present invention; Figure 3 It is a schematic diagram of the sealing frame and the electric conveyor belt of the present invention; Figure 4 It is a schematic diagram of the contact frame and the contact plate of the present invention; Figure 5 It is a schematic diagram of the contact frame and the connecting plate of the present invention; Figure 6 It is a schematic diagram of the pressure sensor and the spring of the present invention; Figure 7 It is a schematic diagram of the electric runner and the cleaning brush of the present invention; Figure 8 It is a schematic diagram of the first motor and the bidirectional screw of the present invention; Figure 9 Schematic diagram of the drive board and the second motor structure of the present invention.

[0018] Reference numerals: 100, moving seat; 110, fixed plate; 200, water tank; 300, mobile cleaning mechanism; 310, electric push rod; 311, movable plate; 312, sealing frame; 313, piston plate; 314, air pump; 315, bidirectional screw; 316, first motor; 320, handling assembly; 321, electric conveyor belt; 322, fixed frame; 323, support plate; 324, contact wheel; 325, contact frame; 3251, connecting plate; 326, contact plate; 327, ball; 328, pressure sensor; 329, guide wheel; 3210, guide ring; 3211, guide plate; 3212, spring; 330, cleaning assembly; 331, electric rotating wheel; 332, cleaning brush strip; 333, movable frame; 334, second motor; 335, drive board; 336, high-pressure nozzle; 337, sealing tape. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. 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.

[0020] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of the present invention are only for the purpose of illustration and do not represent the only implementation manner.

[0021] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0022] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, the first feature being "above", "over" or "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" or "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0023] Unless otherwise defined, all technical and scientific terms used in the specification of the present invention have the same meaning as commonly understood by those skilled in the technical field to which the present invention pertains. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the specification of the present invention includes any and all combinations of one or more of the related listed items.

[0024] The following will be combined with Figures 1-9 to describe the auxiliary cleaning device for a liquefied gas storage container of the present invention.

[0025] As Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 8 shown, in one embodiment, an auxiliary cleaning device for a liquefied gas storage container includes: A moving seat 100, a fixing plate 110 and a water tank 200. The fixing plate 110 and the water tank 200 are respectively fixedly installed on the top of the moving seat 100; A moving cleaning mechanism 300. The moving cleaning mechanism 300 includes two electric push rods 310, two movable plates 311, a handling component 320 and a cleaning component 330. The two electric push rods 310 are respectively arranged on both sides of the fixing plate 110, and the two movable plates 311 are respectively fixedly connected to the two electric push rods 310. The handling component 320 is located on one side of the two movable plates 311, and the cleaning component 330 is located between the two movable plates 311; Among them, the handling component 320 includes a sealing frame 312 fixedly installed on one side of the movable plate 311. An electric conveyor belt 321 is fixedly installed on one side of the sealing frame 312. A contact frame 325 is fixedly installed on one side of the moving seat 100.

[0026] In this embodiment, through the cooperation of the electric push rod 310 and the movable plate 311 in the mobile cleaning mechanism 300, the cleaning component 330 can flexibly adjust its position to clean storage containers of different sizes. The electric conveyor belt 321 of the handling component 320 moves and rotates the storage container, and combined with the supporting effect of the contact frame 325, it not only shares the weight but also ensures the stability of the storage container during the cleaning process. Especially in frequently used scenarios, it effectively reduces the stress and wear of the storage container cleaning equipment during long-term operation, thereby extending the overall service life of the equipment.

[0027] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, the handling component 320 further includes a fixing frame 322 fixedly installed on the outer side of the electric conveyor belt 321. A support plate 323 is fixedly installed inside the fixing frame 322, and the support plate 323 is located inside the electric conveyor belt 321. A plurality of contact wheels 324 are rotatably installed on both sides of the support plate 323. Both electric push rods 310 are slidably installed on one side of the fixing plate 110. A bidirectional screw 315 is rotatably installed on one side of the fixing plate 110. The bidirectional screw 315 is threadedly connected to one side of the two electric push rods 310. A first motor 316 is fixedly installed on one side of the fixing plate 110. The output end of the first motor 316 is connected to the surface of the bidirectional screw 315 through a pulley and a belt. An air pump 314 is fixedly installed on the outer side of the movable plate 311. A piston plate 313 is slidably installed inside the sealing frame 312. The electric conveyor belt 321 is fixedly installed on one side of the piston plate 313. The air pump 314 is communicated with the inside of the sealing frame 312.

[0028] A plurality of balls 327 are rotatably installed on the surface of the contact plate 326. Two connecting plates 3251 are fixedly installed on one side of the contact plate 326. The other sides of the two connecting plates 3251 are fixedly connected to the same guide plate 3211.

[0029] A plurality of guide wheels 329 are rotatably installed on the surfaces of the two connecting plates 3251. A plurality of guide rings 3210 are fixedly installed on the outer sides of the guide wheels 329.

[0030] Both the contact frame 325 and the contact plate 326 are set in a disc shape. The contact plate 326 is slidably connected to the contact frame 325. A plurality of springs 3212 are fixedly installed inside the contact frame 325. The other ends of the plurality of springs 3212 are fixedly connected to the contact plate 326.

[0031] A pressure sensor 328 is fixedly installed inside the contact frame 325. The sensing end of the pressure sensor 328 is in contact with the contact plate 326. The pressure sensor 328 is a high-precision sensor built inside the contact frame 325 and has an independent control system. It can detect the pressure change in real time when the contact plate 326 contacts the surface of the storage container. Its sensing end is in direct contact with the contact plate 326. By sensing the movement of the contact plate 326 and the contact situation with the surface of the storage container, it can accurately detect the pressure change.

[0032] In this embodiment, during cleaning, the corresponding movable plates 311 are driven by two electric push rods 310 to move to one side of the storage container. Then, the first motor 316 drives the bidirectional screw 315 to rotate synchronously through a belt and a pulley to adjust the distance between the two movable plates 311, so that the two electric conveyor belts 321 can clamp and move storage containers of different sizes. The air pump 314 is connected to the piston plate 313 inside the sealing frame 312, and the clamping force of the electric conveyor belt 321 can be adjusted by air pressure. During clamping, the support plates 323 and the contact wheels 324 on the inner sides of the two electric conveyor belts 321 can stably support the electric conveyor belts 321 to ensure that the electric conveyor belts 321 can stably contact the surface of the storage container to complete clamping. After clamping, the storage container is moved to the surface of the contact frame 325, and the two electric conveyor belts 321 are started to rotate in one counterclockwise and one clockwise direction to rotate the storage container. The guide plate 3211 can guide the storage container to make it move more conveniently. When the storage container moves to the surface of the contact frame 325, the storage container contacts the contact plate 326 and multiple balls 327. The contact plate 326 moves downward and simultaneously presses the pressure sensor 328, and the weight of the storage container can be detected during the rotation of the storage container. The pressure sensor 328 timely feeds back the load information of the storage container according to the sensed weight change to ensure that the weight does not exceed the bearing limit of the contact frame 325.

[0033] As Figure 2 、 Figure 7 、 Figure 8 and Figure 9 shown, the cleaning assembly 330 includes an electric runner 331 fixedly installed on one side of the fixed plate 110. The electric runner 331 is located between the two electric conveyor belts 321, and a plurality of cleaning brush strips 332 are fixedly installed on the outer side of the electric runner 331.

[0034] The cleaning brush strips 332 are arranged around the surface of the electric runner 331, and the cross sections of the plurality of cleaning brush strips 332 are all set in a crescent shape.

[0035] On one side of the fixed plate 110, two movable frames 333 are fixedly installed. On one side of each of the two movable frames 333, a driving plate 335 is provided. On one side of the driving plate 335, a plurality of high-pressure nozzles 336 are fixedly installed, and the plurality of high-pressure nozzles 336 are all connected to the water tank 200.

[0036] On the top of the movable frame 333, a second motor 334 is fixedly installed. The output end of the second motor 334 extends into the movable frame 333 and is fixedly connected to the driving plate 335. The driving plate 335 is rotatably connected to the inner wall of the movable frame 333. Sealing strips 337 are fixedly connected between both sides of the driving plate 335 and the inner wall of the movable frame 333.

[0037] In this embodiment, when the storage container moves to the surface of the contact frame 325 through the electric conveyor belt 321, the electric rotating wheel 331 and the plurality of cleaning brush strips 332 will start to contact the surface of the storage container. The rotation of the electric rotating wheel 331 drives the plurality of cleaning brush strips 332, and the crescent-shaped cross-section of the brush strips better fits the surface of the storage container, effectively removing stains such as dust and oil stains through rapid rotation. In addition, the cleaning assembly 330 further includes a plurality of high-pressure nozzles 336, which work synchronously with the cleaning brush strips 332, further flushing the surface of the storage container by spraying high-pressure water flow to remove stubborn stains and impurities. The second motor 334 can rotate to drive the driving plate 335 to adjust the angle of the driving plate 335, enabling the angle of the high-pressure nozzles 336 to be adjusted according to the cleaning needs, so that they can accurately aim at different parts of the storage container, further improving the cleaning effect.

[0038] In this embodiment, during cleaning, two electric push rods 310 drive the corresponding movable plates 311 to move to one side of the storage container. Then, the first motor 316 drives the bidirectional screw rod 315 to rotate synchronously through a belt and a pulley to adjust the distance between the two movable plates 311, so that the two electric conveyor belts 321 can clamp and move storage containers of different sizes. The air pump 314 is connected to the piston plate 313 inside the sealing frame 312, and the clamping force of the electric conveyor belt 321 can be adjusted by air pressure. When clamping, the support plates 323 and the contact wheels 324 on the inner sides of the two electric conveyor belts 321 can stably support the electric conveyor belts 321 to ensure that the electric conveyor belts 321 can stably contact the surface of the storage container to complete clamping. After clamping, the storage container is moved to the surface of the contact frame 325, and the two electric conveyor belts 321 are started to rotate in one counterclockwise and one clockwise direction to rotate the storage container. The guide plate 3211 can guide the storage container to make its movement more convenient. When the storage container moves to the surface of the contact frame 325, the storage container contacts the contact plate 326 and a plurality of balls 327. The contact plate 326 moves downward and synchronously presses the pressure sensor 328, which can detect the weight of the storage container during the rotation of the storage container. The pressure sensor 328 timely feeds back the load information of the storage container according to the sensed weight change to ensure that the weight does not exceed the bearing limit of the contact frame 325. When the storage container is moved to the surface of the contact frame 325 by the electric conveyor belt 321, the electric rotating wheel 331 and the plurality of cleaning brush strips 332 will start to contact the surface of the storage container. The rotation of the electric rotating wheel 331 drives the plurality of cleaning brush strips 332, and the brush strip cross-section in a crescent shape can better fit the surface of the storage container, and effectively remove stains such as dust and oil stains through rapid rotation. In addition, the cleaning assembly 330 further includes a plurality of high-pressure nozzles 336, and these high-pressure nozzles 336 work synchronously with the cleaning brush strips 332 to further wash the surface of the storage container by spraying high-pressure water flow to remove stubborn stains and impurities. The second motor 334 can rotate the driving plate 335 to adjust the angle of the driving plate 335, and can adjust the angle of the high-pressure nozzles 336 according to the cleaning needs, so that it can accurately aim at different parts of the storage container to further improve the cleaning effect.

[0039] It should be noted that the storage container in this application can particularly be a liquefied gas storage tank on land or a marine equipment such as a ship, and the liquefied gas can be, for example, liquefied natural gas, liquid nitrogen, liquid oxygen, liquid hydrogen, and liquid helium, etc.

[0040] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0041] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. An auxiliary cleaning device for a liquefied gas storage container, characterized in that: include: A movable seat (100), a fixed plate (110) and a water tank (200), wherein the fixed plate (110) and the water tank (200) are respectively fixedly mounted on the top of the movable seat (100); A mobile cleaning mechanism (300), the mobile cleaning mechanism (300) comprising two electric push rods (310), two movable plates (311), a transport assembly (320) and a cleaning assembly (330), the two electric push rods (310) being respectively arranged on both sides of a fixed plate (110), and the two movable plates (311) being respectively fixedly connected to the two electric push rods (310), the transport assembly (320) being located on one side of the two movable plates (311), and the cleaning assembly (330) being located between the two movable plates (311); The transport assembly (320) comprises a sealing frame (312) fixedly mounted on one side of the movable plate (311), an electric conveyor belt (321) fixedly mounted on one side of the sealing frame (312), and a contact frame (325) fixedly mounted on one side of the movable seat (100).

2. The auxiliary cleaning device for a liquefied gas storage container according to claim 1, characterized in that: The transport assembly (320) further comprises a fixing frame (322) fixedly mounted on the outside of the electric conveyor belt (321), a support plate (323) fixedly mounted inside the fixing frame (322), and the support plate (323) is located on the inside of the electric conveyor belt (321), a plurality of contact wheels (324) are rotatably mounted on both sides of the support plate (323), the two electric push rods (310) are slidably mounted on one side of the fixing plate (110), a bidirectional screw (315) is rotatably mounted on one side of the fixing plate (110), and the bidirectional screw (315) is rotatably mounted on the one side of the fixing plate (110), and the bidirectional screw (315) is rotatably mounted on the One side of the two electric push rods (310) is threadedly connected, a first motor (316) is fixedly installed on one side of the fixed plate (110), and the output end of the first motor (316) is connected to the surface of the bidirectional screw (315) through a pulley and a belt transmission, an air pump (314) is fixedly installed on the outer side of the movable plate (311), a piston plate (313) is slidably installed inside the sealing frame (312), the electric conveyor belt (321) is fixedly installed on one side of the piston plate (313), and the air pump (314) is connected to the inside of the sealing frame (312).

3. The auxiliary cleaning device for a liquefied gas storage container according to claim 1, characterized in that: A contact plate (326) is fixedly mounted on one side of the movable seat (100), a plurality of balls (327) are rotatably mounted on the surface of the contact plate (326), two connecting plates (3251) are fixedly mounted on one side of the contact plate (326), and the other sides of the two connecting plates (3251) are fixedly connected to the same guide plate (3211).

4. The auxiliary cleaning device for a liquefied gas storage container according to claim 3, characterized in that: A plurality of guide wheels (329) are rotatably mounted on the surfaces of the two connecting plates (3251), and a plurality of guide rings (3210) are fixedly mounted on the outer sides of the guide wheels (329).

5. The auxiliary cleaning device for a liquefied gas storage container according to claim 3, characterized in that: The contact frame (325) and the contact plate (326) are both configured in a disc shape; the contact plate (326) is slidably connected to the contact frame (325); a plurality of springs (3212) are fixedly mounted inside the contact frame (325); the other ends of the plurality of springs (3212) are fixedly connected to the contact plate (326).

6. The auxiliary cleaning device for a liquefied gas storage container according to claim 3, characterized in that: A pressure sensor (328) is fixedly installed inside the contact frame (325), and a sensing end of the pressure sensor (328) is in contact with the contact plate (326).

7. The auxiliary cleaning device for a liquefied gas storage container according to claim 1, characterized in that: The cleaning assembly (330) comprises an electric rotating wheel (331) fixedly mounted on one side of the fixed plate (110); the electric rotating wheel (331) is located between two electric conveyor belts (321); and a plurality of cleaning brush strips (332) are fixedly mounted on the outer side of the electric rotating wheel (331).

8. The auxiliary cleaning device for a liquefied gas storage container according to claim 7, characterized in that: The cleaning brush strips (332) are arranged around the surface of the electric rotating wheel (331), and the cross-sections of the plurality of cleaning brush strips (332) are all arranged in a crescent shape.

9. The auxiliary cleaning device for a liquefied gas storage container according to claim 1, characterized in that: Two movable frames (333) are fixedly mounted on one side of the fixed plate (110), a driving plate (335) is provided on one side of the two movable frames (333), a plurality of high-pressure nozzles (336) are fixedly mounted on one side of the driving plate (335), and the plurality of high-pressure nozzles (336) are all connected to the water tank (200).

10. The auxiliary cleaning device for a liquefied gas storage container according to claim 9, characterized in that: A second motor (334) is fixedly mounted on the top of the movable frame (333); an output end of the second motor (334) extends into the interior of the movable frame (333) and is fixedly connected to a drive plate (335); the drive plate (335) is rotatably connected to an inner wall of the movable frame (333); and sealing belts (337) are fixedly connected to both sides of the drive plate (335) and the inner wall of the movable frame (333).

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