A pump tower device for a large-scale cryogenic liquefied gas container

Abstract

An embodiment of the present application provides a pump tower device for a large-scale cryogenic liquefied gas container, which relates to the technical field of pump towers. The pump tower device for a large-scale cryogenic liquefied gas container according to the present application includes a liquid outlet pump pipe, and three liquid inlet pump pipes are arranged on the outer circumference of the liquid outlet pump pipe. The liquid outlet pump pipe and the liquid inlet pump pipes are distributed in a triangular pattern. A pump tower base is installed at the bottom of the liquid outlet pump pipe. A number of ladders are rotatably distributed around the circumference of the liquid outlet pump pipe. A stepping platform is arranged at the upper end of the ladder. A number of hoop mechanisms are equidistantly arranged on the liquid outlet pump pipe and the liquid inlet pump pipes. In this device, three liquid inlet pump pipes are arranged around the liquid outlet pump pipe in a triangular pattern. This structure makes the force distribution between the pipes more reasonable, improving the overall structural strength. The ladders are rotatably distributed in a 120-degree circular pattern, and the middle of each section of the ladder is the stress concentration point. This is beneficial for dispersing stress and avoiding damage to the structure caused by stress concentration.

Description

Technical Field

[0001] This application relates to the technical field of pump towers, and more specifically, to a pump tower device for a large cryogenic liquefied gas container. Background Art

[0002] The pump tower device of a cryogenic liquefied gas container (such as liquid nitrogen, liquid oxygen, liquefied natural gas / LNG storage tank, etc.) is a key device for extracting and transporting cryogenic liquefied gas from inside the container. It is usually integrated inside or outside the storage tank, and the pressurization, transportation, or circulation of the liquefied gas is achieved through a pump system.

[0003] In the prior art (publication number CN115839477A, title: A pump tower device for a liquefied natural gas storage tank), it includes a liquid pumping pipe, a liquid inlet pipe, a liquid measuring pipe, a support for the sleeve of the liquid pumping pipe, a support for the sleeve of the liquid inlet pipe, a support for the sleeve of the liquid measuring pipe, a ladder, a guiding connector, and a pump tower base. The liquid pumping pipe, the liquid inlet pipe, and the liquid measuring pipe are vertically and parallelly arranged; the support for the sleeve of the liquid pumping pipe is sleeved on the outer surface of the liquid pumping pipe; the support for the sleeve of the liquid inlet pipe is sleeved on the outer surface of the liquid inlet pipe; the support for the sleeve of the liquid measuring pipe is sleeved on the outer surface of the liquid measuring pipe; the ladder is installed on the outer sides of the liquid inlet pipe and the liquid measuring pipe and is fixedly installed with the guiding connector. This invention can effectively limit the vibration influence of the liquid pumping pipe through the pump tower base and avoid the stress concentration phenomenon caused by the cold shrinkage effect of the pipeline; the perpendicularity requirements of the three liquid pipes are fixed through the guiding connector, ensuring the telescopic guiding function of the pipeline, improving the installation accuracy of the pipeline, guaranteeing the installation accuracy of the pump tower device, and facilitating the installation and fixation of the ladder.

[0004] Since the ladder, the liquid inlet pipe, and the liquid measuring pipe of the above pump tower are all arranged on one side of the liquid pumping pipe, the mass distribution of the pump pipe is uneven, and the inertia of the pump tower causes great damage to the connection during shaking, and the overall structural strength is insufficient, making it difficult to withstand the pressure and stress under complex working conditions. During long-term operation, due to uneven stress, problems such as loosening and rupture are likely to occur at the pipe connections, greatly affecting the transportation efficiency and safety of the liquefied gas. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application proposes a pump tower device for a large cryogenic liquefied gas container, which can improve the overall structural strength and ensure the long-term stable operation of the pump tower.

[0006] This application is implemented as follows:

[0007] The present application provides a pump tower device for a large-scale cryogenic liquefied gas container, including: a liquid outlet pump pipe, on the outer circumference of which there are three liquid inlet pump pipes, the liquid outlet pump pipe and the liquid inlet pump pipes are distributed in a triangular pattern, pipe sleeve supports are installed on the upper parts of the liquid outlet pump pipe and the liquid inlet pump pipes, a pump tower base is installed at the bottom of the liquid outlet pump pipe, several ladders are circumferentially and rotatably distributed on the liquid outlet pump pipe, a stepping platform is arranged at the upper end of the ladders, and several hoop mechanisms are equidistantly arranged on the liquid outlet pump pipe and the liquid inlet pump pipes.

[0008] For the pump tower device of a large-scale cryogenic liquefied gas container according to an embodiment of the present application, the ladder includes a ladder body, the ladder body is fixedly installed on the liquid outlet pump pipe, and a protective frame is fixedly installed on one side of the ladder body.

[0009] For the pump tower device of a large-scale cryogenic liquefied gas container according to an embodiment of the present application, the stepping platform is arranged at the upper end of the protective frame and is fixedly connected to the liquid outlet pump pipe, and a guardrail is fixedly installed at the upper edge of the stepping platform.

[0010] For the pump tower device of a large-scale cryogenic liquefied gas container according to an embodiment of the present application, the hoop mechanism includes a liquid outlet pipe hoop, the liquid outlet pipe hoop is fixedly installed on the liquid outlet pump pipe, a support rod is fixedly connected to the outer peripheral surface of the liquid outlet pipe hoop, and several reinforcing ribs are arranged on the support rod.

[0011] For the pump tower device of a large-scale cryogenic liquefied gas container according to an embodiment of the present application, one end of the support rod far from the liquid outlet pipe hoop is fixedly connected to a liquid inlet pipe hoop, and the liquid inlet pipe hoop is installed on the liquid inlet pump pipe.

[0012] For the pump tower device of a large-scale cryogenic liquefied gas container according to an embodiment of the present application, a diagonal brace mechanism is further arranged on the liquid outlet pump pipe, the diagonal brace mechanism includes a rotating assembly and a guide block, the rotating assembly is arranged below the liquid outlet pipe hoop, a limiting assembly is arranged on the rotating assembly, the guide block is circumferentially arranged on the liquid outlet pump pipe, a diagonal brace rod is rotatably arranged in the guide block, one end of the diagonal brace rod far from the guide block is fixedly connected to a support piece, and the inner wall of the support piece abuts against the liquid inlet pump pipe.

[0013] For the pump tower device of a large-scale cryogenic liquefied gas container according to an embodiment of the present application, the rotating assembly includes a sleeve, a handwheel is fixedly connected to the outer peripheral surface of the sleeve, and a thread groove is arranged on the inner wall of the sleeve.

[0014] For the pump tower device of a large-scale cryogenic liquefied gas container according to an embodiment of the present application, a slider is slidably connected in the guide block, a lifting block is fixedly connected to the upper end of the slider, the lifting block is in threaded cooperation with the thread groove, a rack is fixedly installed on one side of the slider, and a gear is meshed with the rack, and the gear is arranged at one end of the diagonal brace rod.

[0015] For the pump tower device of a large-scale cryogenic liquefied gas container according to an embodiment of the present application, the gear is rotatably mounted on a rotating shaft, the rotating shaft is fixedly mounted on a guiding block, the bottom of the guiding block is fixedly mounted on a mounting ring, and the mounting ring is fixedly sleeved on a liquid outlet pump pipe.

[0016] For the pump tower device of a large-scale cryogenic liquefied gas container according to an embodiment of the present application, the limiting component includes a fixing block, the fixing block is fixedly mounted on a sleeve, a movable rod is penetrated through the fixing block, a spring is sleeved on the movable rod, two ends of the movable rod are respectively fixedly connected with a limiting insertion block and a lever, the lever abuts against one side of the fixing block, two ends of the spring are respectively fixedly connected with the fixing block and the limiting insertion block, and the limiting insertion block is inserted into a reinforcing rib.

[0017] Advantages of the present invention:

[0018] 1. In the present invention, three liquid inlet pump pipes are arranged in a triangular distribution around the liquid outlet pump pipe. This structure makes the force distribution between the pipes more reasonable, improves the overall structural strength, and the pipe sleeve support and the pump tower base ensure the stable installation and operation of the pipes.

[0019] 2. The ladder in the present invention is distributed in a circular rotation at 120 degrees, and it is optimal to have three as a cycle, or it can also be arranged in a non-multiple-of-three pattern. The tank stores liquefied gas at a temperature of minus 163 degrees, and the metal shrinks. The middle of each section of the ladder is the shrinkage stress point, which is beneficial to dispersing stress and avoiding damage to the structure caused by stress concentration. Moreover, each section of the ladder is lower than that of a traditional ladder. When a person stumbles, it is beneficial to reduce the injury suffered by the person. The protective frame is fixed on one side of the ladder body to play a protective role and prevent people from falling from the side. The stepping platform provides a safe staying and operating space for people, and the guardrail can prevent people from falling from the platform.

[0020] 3. In the present invention, the liquid outlet pump pipe and the liquid inlet pump pipe are connected together by a hoop mechanism, enhancing the overall stability. The reinforcing rib is arranged on the support rod to enhance the structural strength. The hoop connected to the liquid outlet pump pipe is in a locked state, and there is a gap between the hoop connected to the liquid inlet pump pipe and the liquid inlet pump pipe, which can adapt to the expansion and contraction of the pipe caused by factors such as temperature change and avoid pipe damage caused by excessive restraint.

[0021] 4. In the present invention, the liquid inlet pump pipe is supported from the inside by the diagonal strut in the diagonal strut mechanism, further strengthening the overall structural strength of the pump tower. The position of the diagonal strut is fixed by the limiting component to ensure that the diagonal strut will not rotate randomly during the working process and guarantee the support effect. Description of the Drawings

[0022] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 is a three-dimensional assembly schematic diagram of the overall structure according to an embodiment of the present application;

[0024] Figure 2 is a top view structural schematic diagram according to an embodiment of the present application;

[0025] Figure 3 is a distribution schematic diagram of the liquid outlet pump pipe and the liquid inlet pump pipe according to an embodiment of the present application;

[0026] Figure 4 is a three-dimensional structural schematic diagram of the ladder and the stepping platform part according to an embodiment of the present application;

[0027] Figure 5 is a three-dimensional structural schematic diagram of the hoop mechanism according to an embodiment of the present application;

[0028] Figure 6 is a three-dimensional assembly schematic diagram of the diagonal brace mechanism and the hoop mechanism according to an embodiment of the present application;

[0029] Figure 7 is a three-dimensional structural schematic diagram of the diagonal brace mechanism and the hoop mechanism according to an embodiment of the present application;

[0030] Figure 8 is a partial cross-sectional view of the diagonal brace mechanism according to an embodiment of the present application;

[0031] Figure 9 is an exploded view of the structures of the diagonal brace mechanism and the hoop mechanism according to an embodiment of the present application;

[0032] Figure 10 is according to an embodiment of the present application Figure 8 magnified view of the structure at A in

[0033] In the figure:

[0034] 11. Liquid outlet pump pipe; 12. Liquid inlet pump pipe; 13. Pipe sleeve support; 14. Pump tower base; 2. Diagonal brace mechanism; 21. Rotating assembly; 211. Sleeve; 212. Handwheel; 213. Thread groove; 214. Lifting block; 215. Slide block; 216. Rack; 22. Limit assembly; 221. Fixed block; 222. Movable rod; 223. Lever; 224. Spring; 225. Limit insertion block; 23. Guide block; 231. Installation ring; 24. Diagonal brace rod; 241. Gear; 242. Rotating shaft; 25. Support plate; 3. Ladder; 31. Ladder body; 32. Protective frame; 4. Treading platform; 41. Guardrail; 5. Hoop mechanism; 51. Liquid outlet pipe hoop; 52. Support rod; 521. Reinforcing rib; 53. Liquid inlet pipe hoop; 6. Reinforcing diagonal brace; 7. Stability-increasing diagonal brace. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0036] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are 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 of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0037] Embodiment 1:

[0038] As Figures 1 - 5 shown, a pump tower device of a large-scale low-temperature liquefied gas container according to an embodiment of the present application includes a liquid outlet pump pipe 11. Three liquid inlet pump pipes 12 are arranged on the outer circumference of the liquid outlet pump pipe 11. The liquid outlet pump pipe 11 and the liquid inlet pump pipe 12 are arranged in a triangular pattern. Pipe sleeve supports 13 are installed on the upper parts of the liquid outlet pump pipe 11 and the liquid inlet pump pipe 12. A pump tower base 14 is installed at the bottom of the liquid outlet pump pipe 11. A number of ladders 3 are rotatably distributed on the circumference of the liquid outlet pump pipe 11. A treading platform 4 is arranged at the upper end of the ladder 3. A number of hoop mechanisms 5 are arranged at equal intervals on the liquid outlet pump pipe 11 and the liquid inlet pump pipe 12.

[0039] As Figure 1 and Figure 4 shown, a plurality of stability-increasing diagonal braces 7 are welded to the bottom of the treading platform 4, and the surface of the stability-increasing diagonal brace 7 is connected to the surface of the liquid outlet pump pipe 11. Thus, the liquid outlet pump pipe 11 and the stability-increasing diagonal brace 7 are used in cooperation to increase the stability of the treading platform 4.

[0040] Three liquid inlet pump pipes 12 are distributed in a triangular pattern around the liquid outlet pump pipe 11. This structure makes the force distribution between the pipes more reasonable, improving the overall structural strength. The sleeve support 13 is installed on the upper part of the liquid outlet pump pipe 11 and the liquid inlet pump pipes 12 to provide support and fixation. The pump tower base 14 is installed at the bottom of the liquid outlet pump pipe 11 to provide basic support. The sleeve support 13 and the pump tower base 14 ensure the stable installation and operation of the pipes.

[0041] The ladder 3 includes a ladder body 31, and the ladder body 31 is fixedly installed on the liquid outlet pump pipe 11. A protective frame 32 is fixedly installed on one side of the ladder body 31.

[0042] The ladder body 31 is fixedly installed on the liquid outlet pump pipe 11, allowing people to climb through the ladder body 31. The protective frame 32 is fixed on one side of the ladder body 31 to play a protective role, preventing people from falling from the side. The ladders 3 are distributed in a circular rotation at 120 degrees. It is optimal to have three as a cycle, but it can also be arranged in non - multiples of three. The tank stores liquefied gas at a temperature of - 163 degrees Celsius, and the metal shrinks. The middle of each section of the ladder is the shrinkage stress point, which helps to disperse stress and avoid damage to the structure caused by stress concentration. When specifically set, each section of the ladder is lower in height compared to the traditional ladder 3. When a person stumbles, it is beneficial to reduce the harm suffered by the person.

[0043] The stepping platform 4 is arranged at the upper end of the protective frame 32 and is fixedly connected to the liquid outlet pump pipe 11. A guardrail 41 is fixedly installed at the upper edge of the stepping platform 4.

[0044] The stepping platform 4 provides a safe staying and operating space for people. The guardrail 41 is installed at the upper edge of the stepping platform 4 to prevent people from falling from the platform, further ensuring the safety of people on the platform.

[0045] The hoop mechanism 5 includes an outlet pipe hoop 51, and the outlet pipe hoop 51 is fixedly installed on the liquid outlet pump pipe 11. A support rod 52 is fixedly connected to the outer peripheral surface of the outlet pipe hoop 51. A number of reinforcing ribs 521 are provided on the support rod 52. One end of the support rod 52 away from the outlet pipe hoop 51 is fixedly connected to an inlet pipe hoop 53, and the inlet pipe hoop 53 is installed on the liquid inlet pump pipe 12.

[0046] The hoop mechanism 5 connects the liquid outlet pump pipe 11 and the liquid inlet pump pipe 12 together, enhancing the overall stability. The reinforcing ribs 521 provided on the support rod 52 enhance the structural strength. There is a clearance connection between the liquid inlet pump pipe 12 and the inlet pipe hoop 53, and the inlet pipe hoop 53 only restricts the horizontal displacement. The outlet pipe hoop 51 is fixedly connected to the liquid outlet pump pipe 11, which can adapt to the expansion and contraction of the pipe due to factors such as temperature changes, and avoid pipe damage caused by excessive restraint.

[0047] Such as Figure 1As shown, reinforcing braces 6 are provided on the surface of the liquid inlet pipe clamp 53. There are multiple reinforcing braces 6, which are staggered and distributed on the surfaces of the liquid outlet pump pipe 11 and the liquid inlet pump pipe 12. The reinforcing braces 6 are used to increase the strength among multiple liquid inlet pipe clamps 53, the support rods 52, and the liquid outlet pipe clamp 51.

[0048] Embodiment 2:

[0049] In order to further improve the connection strength and stability between the clamp mechanism 5 and the liquid outlet pump pipe 11 and the liquid inlet pump pipe 12, a diagonal brace mechanism 2 is provided at the bottom of the clamp mechanism 5. The liquid inlet pump pipe 12 is supported from the inside by the diagonal braces 24 in the diagonal brace mechanism 2, further strengthening the strength of the overall structure of the pump tower.

[0050] As Figures 6 - 10 shown, a diagonal brace mechanism 2 is also provided on the liquid outlet pump pipe 11. The diagonal brace mechanism 2 includes a rotating assembly 21 and a guide block 23. The rotating assembly 21 is arranged below the liquid outlet pipe clamp 51. A limiting assembly 22 is provided on the rotating assembly 21. The guide block 23 is circumferentially arranged on the liquid outlet pump pipe 11. A diagonal brace 24 is rotatably arranged in the guide block 23. One end of the diagonal brace 24 away from the guide block 23 is fixedly connected with a support piece 25, and the inner wall of the support piece 25 abuts against the liquid inlet pump pipe 12.

[0051] Among them, the rotating assembly 21 is sleeved on the liquid outlet pump pipe 11 and can simultaneously drive a plurality of diagonal braces 24 to support or retract. The limiting assembly 22 is used to limit the rotating assembly 21, so that the position of the diagonal brace 24 is fixed. The support piece 25 is arc-shaped and fits the outer peripheral surface of the liquid inlet pump pipe 12 to support the liquid inlet pump pipe 12 from the inside.

[0052] The rotating assembly 21 includes a sleeve 211. A handwheel 212 is fixedly connected to the outer peripheral surface of the sleeve 211. A threaded groove 213 is provided on the inner wall of the sleeve 211. A slider 215 is slidably connected in the guide block 23. An elevating block 214 is fixedly connected to the upper end of the slider 215. The elevating block 214 is in threaded cooperation with the threaded groove 213. A rack 216 is fixedly installed on one side of the slider 215. A gear 241 is meshed with the rack 216. The gear 241 is arranged at one end of the diagonal brace 24. The gear 241 is rotatably installed on a rotating shaft 242, and the rotating shaft 242 is fixedly installed on the guide block 23. The bottom of the guide block 23 is fixedly installed on an installation ring 231, and the installation ring 231 is fixedly sleeved on the liquid outlet pump pipe 11.

[0053] By rotating the handwheel 212, the sleeve 211 is driven to rotate. The thread groove 213 on the inner wall of the sleeve 211 is in threaded cooperation with the lifting block 214, so that the lifting block 214 drives the slider 215 to slide in the guide block 23. The rack 216 on one side of the slider 215 meshes with the gear 241, thereby driving the diagonal strut 24 to rotate around the rotating shaft 242, causing several diagonal struts 24 to open outwards simultaneously, improving the operation efficiency. The diagonal strut 24 drives the support piece 25 to rotate synchronously, strengthening the support for the liquid inlet pump pipe 12.

[0054] The limit component 22 includes a fixed block 221 which is fixedly installed on the sleeve 211. A movable rod 222 is penetrated through the fixed block 221. A spring 224 is sleeved on the movable rod 222. The two ends of the movable rod 222 are respectively fixedly connected with a limit insertion block 225 and a lever 223. The lever 223 abuts against one side of the fixed block 221. The two ends of the spring 224 are respectively fixedly connected with the fixed block 221 and the limit insertion block 225. The limit insertion block 225 is inserted into the reinforcing rib 521.

[0055] By pulling the movable rod 222 through the lever 223, the limit insertion block 225 is pulled out from the reinforcing rib 521. After rotating the handwheel 212 to adjust the position of the diagonal strut 24, when the support piece 25 abuts against the liquid inlet pump pipe 12, the position of the limit insertion block 225 corresponds to that of another reinforcing rib 521. Release the lever 223, and the spring 224 pushes the limit insertion block 225 to insert into the reinforcing rib 521, fixing the position of the diagonal strut 24, ensuring that the diagonal strut 24 will not rotate randomly during the working process, and guaranteeing the support effect.

[0056] In summary, the working principle of a pump tower device of a large-scale low-temperature liquefied gas container according to an embodiment of the present invention is as follows:

[0057] The liquid outlet pump pipe 11 and the liquid inlet pump pipe 12 are distributed in a triangular pattern, making the force distribution between the pipes more reasonable, improving the overall structural strength. The pipe sleeve support 13 and the pump tower base 14 ensure the stable installation of the pipes. The ladders 3 are circumferentially and rotationally distributed. Personnel climb through the ladders 3, and the stepping platform 4 provides a space for staying and operating. The protective frame 32 and the guardrail 41 ensure the safety of personnel. At the same time, the distribution of the ladders 3 is beneficial to dispersing the stress generated by the shrinkage of low-temperature metal and reducing the damage to the connection points when the pump tower shakes. The hoop mechanism 5 connects the liquid outlet pump pipe 11 and the liquid inlet pump pipe 12. There is a gap between the hoop connected to the liquid inlet pump pipe 12 to adapt to the pipe expansion and contraction. The diagonal strut mechanism 2 adjusts the angle and position of the diagonal strut 24 by rotating the handwheel 212. The diagonal strut 24 supports the liquid inlet pump pipe 12 from the inside, further strengthening the overall structural strength of the pump tower. Finally, the position of the diagonal strut 24 is fixed by the limit component 22, ensuring that the diagonal strut 24 will not rotate randomly during the working process, and guaranteeing the support effect.

[0058] The above are only embodiments of the present application and are not intended to limit the protection scope of the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0059] As mentioned above, the above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pump tower device for a large cryogenic liquefied gas container, characterized in that: The invention comprises a liquid outlet pump pipe (11), three liquid inlet pump pipes (12) are arranged on the outer circumference of the liquid outlet pump pipe (11), the liquid outlet pump pipe (11) and the liquid inlet pump pipe (12) are arranged in a triangular shape, a pipe sleeve support (13) is installed on the upper part of the liquid outlet pump pipe (11) and the liquid inlet pump pipe (12), a pump tower base (14) is installed on the bottom of the liquid outlet pump pipe (11), a plurality of ladders (3) are arranged on the circumference of the liquid outlet pump pipe (11), a stepping platform (4) is arranged on the upper end of the ladder (3), and a plurality of clamp mechanisms (5) are arranged on the liquid outlet pump pipe (11) and the liquid inlet pump pipe (12) at equal distances; The clamp mechanism (5) comprises a liquid outlet pipe clamp (51), and the liquid outlet pipe clamp (51) is fixedly mounted on the liquid outlet pump pipe (11); The liquid outlet pump pipe (11) is also provided with an inclined support mechanism (2), the inclined support mechanism (2) comprising a rotating assembly (21) and a guide block (23), the rotating assembly (21) being arranged below the liquid outlet pipe clamp (51), the rotating assembly (21) being provided with a limit assembly (22), the guide block (23) being circumferentially arranged on the liquid outlet pump pipe (11), an inclined support rod (24) being rotatably arranged inside the guide block (23), the end of the inclined support rod (24) away from the guide block (23) being fixedly connected to a support sheet (25), the inner wall of the support sheet (25) being in contact with the liquid inlet pump pipe (12), the rotating assembly (21) comprising a sleeve (211), the outer circumferential surface of the sleeve (211) being fixedly connected to a hand wheel (212), the sleeve (2 A thread groove (213) is provided on the inner wall of the guide block (23), a slider (215) is slidably connected in the guide block (23), a lifting block (214) is fixedly connected to the upper end of the slider (215), the lifting block (214) is threadedly matched with the thread groove (213), a rack (216) is fixedly installed on one side of the slider (215), a gear (241) is meshedly connected on the rack (216), the gear (241) is provided at one end of the diagonal support rod (24), the gear (241) is rotatably installed on a rotating shaft (242), the rotating shaft (242) is fixedly installed on the guide block (23), the bottom of the guide block (23) is fixedly installed on a mounting ring (231), and the mounting ring (231) is fixedly sleeved on the liquid discharge pump pipe (11).

2. The pump tower device for a large cryogenic liquefied gas container according to claim 1, characterized in that: The ladder (3) comprises a ladder body (31), the ladder body (31) is fixedly mounted on a liquid outlet pump pipe (11), and a protective frame (32) is fixedly mounted on one side of the ladder body (31).

3. The pump tower device for a large cryogenic liquefied gas container according to claim 2, characterized in that: The stepping platform (4) is arranged at the upper end of the protection frame (32) and is fixedly connected to the liquid outlet pump pipe (11). A guardrail (41) is fixedly installed at the upper edge of the stepping platform (4).

4. The pump tower device for a large cryogenic liquefied gas container according to claim 1, characterized in that: A support rod (52) is fixedly connected to the outer peripheral surface of the liquid outlet pipe clamp (51), and a plurality of reinforcing ribs (521) are arranged on the support rod (52).

5. The pump tower device for a large cryogenic liquefied gas container according to claim 4, characterized in that: One end of the support rod (52) away from the liquid outlet pipe clamp (51) is fixedly connected to a liquid inlet pipe clamp (53), and the liquid inlet pipe clamp (53) is installed on the liquid inlet pump pipe (12).

6. The pump tower device for a large cryogenic liquefied gas container according to claim 1, characterized in that: The limit assembly (22) comprises a fixed block (221), the fixed block (221) is fixedly mounted on the sleeve (211), a movable rod (222) is provided through the fixed block (221), a spring (224) is sleeved on the movable rod (222), two ends of the movable rod (222) are respectively fixedly connected to a limit plug block (225) and a shift rod (223), the shift rod (223) is abutted against one side of the fixed block (221), two ends of the spring (224) are respectively fixedly connected to the fixed block (221) and the limit plug block (225), and the limit plug block (225) is plugged into the reinforcing rib (521).

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