Pump tower structure and liquefied gas storage container

Abstract

The invention relates to a pump tower structure and a liquefied gas storage container, and relates to the technical field of liquefied gas storage tanks. The pump tower structure penetrates through the top wall of the outer tank body to communicate inside and outside the outer tank body. The pump tower structure comprises a pump liquid pipe, a buffer pipe and a fixed disc. The lower end of the liquid pumping pipe penetrates through the top wall of the outer tank body into the outer tank body. The buffer pipe is arranged outside the pump liquid pipe in a sleeving mode, and a buffer space is formed between the buffer pipe and the pump liquid pipe. The fixing disc is arranged at the upper end of the buffer pipe and protrudes out of the upper end of the buffer pipe in the radial direction. Wherein the end portions of the pump liquid pipe are directly or indirectly fixed to the top wall and the bottom wall of the outer tank body respectively, a clamping block is arranged on the top wall of the outer tank body, and the clamping block is connected with the fixing disc in a clamped mode and limits the fixing disc to move in the vertical direction. The pump tower structure can solve the problem that in the prior art, a pump tower is prone to damage when being impacted by liquid materials in a storage tank.

Description

Technical Field

[0001] The present application relates to the technical field of a pump tower structure and a liquefied gas storage container, and in particular, to a pump tower structure and a liquefied gas storage tank. Background Art

[0002] Liquefied gas storage tanks are special equipment for the storage and transportation of liquefied natural gas and liquefied petroleum gas. When liquefied gas storage tanks are used on transport ships, taking liquefied natural gas (LNG) transport ships as an example, a film enclosure system is set on the inner wall of the tank to achieve shielding and insulation effects. At the same time, a pump tower is set inside the tank for the injection and pumping of liquefied natural gas.

[0003] In the prior art, the pump tower is usually set up to extend vertically from the top wall of the concrete outer tank to the bottom of the tank, and a pump tower base is set on the bottom wall of the tank to fix the lower end of the pump tower. However, when the above structure is in use, the transport ship will shake due to wind and waves during navigation, and the liquefied natural gas inside the tank will also shake and impact the pump tower, which may cause damage to the pump tower in severe cases, affecting the injection and pumping of liquefied natural gas.

[0004] Therefore, it is urgent to provide a pump tower structure that can solve the problem in the prior art that the pump tower is easily damaged when impacted by liquid materials in the storage tank. Summary of the invention

[0005] The purpose of the present application is to provide a pump tower structure and a liquefied gas storage tank, which can solve the problem in the prior art that the pump tower is easily damaged when impacted by liquid materials in the storage tank.

[0006] In order to achieve the above-mentioned purpose, in the first aspect of the present application, the present application provides a pump tower structure, which passes through the top wall of the outer tank body to connect the inside and outside of the outer tank body. The pump tower structure includes a pump liquid pipe, a buffer pipe and a fixed plate. The lower end of the pump liquid pipe passes through the top wall of the outer tank body to the inside of the outer tank body. The buffer tube is sleeved on the outside of the pump liquid pipe, and a buffer space is formed between the buffer tube and the pump liquid pipe. The fixed plate is arranged at the upper end of the buffer tube, and the fixed plate protrudes radially from the upper end of the buffer tube. Among them, the ends of the pump liquid pipe are directly or indirectly fixed to the top wall and the bottom wall of the outer tank body, respectively, and the top wall of the outer tank body is provided with a clamping block, which is clamped with the fixed plate and restricts the movement of the fixed plate in the vertical direction.

[0007] Based on the above-mentioned embodiment of the present application, a double-layer pump tower structure formed by a pump liquid pipe and a buffer pipe is provided, wherein the pump liquid pipe is used for pumping and extracting liquid of liquefied gas. The buffer pipe provided outside the pump liquid pipe is used to protect the pump liquid pipe. When the liquefied gas transport ship is shaken due to waves or other reasons, the impact force generated by the shaking liquefied gas will directly act on the buffer pipe at this time, and the buffer space between the buffer pipe and the pump liquid pipe is separated, thereby avoiding the impact force directly acting on the pump liquid pipe to cause deformation and damage of the pump liquid pipe, thereby avoiding affecting the pumping process of the liquefied gas. Further, by providing the end of the pump liquid pipe to be directly or indirectly connected to the top wall and the bottom wall of the outer tank body, the buffer pipe is connected to the top wall of the outer tank body through the clamping between the fixed plate and the clamping block. At this time, when the buffer pipe is subjected to the impact force, the impact force is transmitted to the outer tank body through the fixed plate and other structures, and cannot directly act on the pump liquid pipe, further reducing the impact on the pump liquid pipe. At the same time, the fixing plate and the clamping block are clamped and fixed, so that the fixing plate and the buffer tube as a whole can move within a certain range when impacted, thereby further reducing the possibility of damage to the buffer tube when impacted, thereby improving the protection effect of the pump liquid tube.

[0008] In some embodiments, a bottom plate is disposed at the lower end of the buffer tube for closing the lower end of the buffer tube, and the pump liquid tube passes through the bottom plate.

[0009] Based on the above-mentioned embodiments of the present application, a bottom plate is provided at the bottom of the buffer tube to seal the bottom of the buffer tube, so as to prevent liquefied gas from entering the buffer space between the pump liquid pipe and the buffer tube to a certain extent.

[0010] In some embodiments, the clamping block includes a connecting portion and a clamping portion, the connecting portion is vertically connected to the top wall, the clamping portion is connected to the connecting portion, and forms an L-shaped structure with the connecting portion. The fixing plate is clamped between the clamping portion and the top wall.

[0011] Based on the above-mentioned embodiments of the present application, the clamping block forms an L-shaped structure through the clamping portion and the connecting portion, so as to be clamped with the fixed plate protruding from the buffer tube to limit the vertical movement of the buffer tube and the fixed plate as a whole, while allowing the fixed plate and the buffer tube to move in the horizontal direction.

[0012] In some embodiments, a buffer strip is provided on the wall surface of the clamping block facing the fixed disk.

[0013] Based on the above-mentioned embodiments of the present application, by arranging a buffer strip on the side of the clamping block facing the fixed disk, buffer protection can be provided when the buffer tube is impacted and moves horizontally to absorb part of the impact force.

[0014] In some embodiments, a reinforcement structure is provided in the buffer tube to strengthen the strength of the buffer tube. The reinforcement structure includes a first reinforcement rib and a second reinforcement rib, wherein the first reinforcement rib is connected to the inner wall of the buffer tube and is perpendicular to the axis of the buffer tube. At least three first reinforcement ribs are connected to each other to enclose the outside of the pump liquid tube. The second reinforcement rib is arranged along the axial direction of the buffer tube. At least two groups of first reinforcement ribs are arranged in the axial direction of the buffer tube, and the two ends of the second reinforcement rib are respectively fixedly connected to different first reinforcement ribs.

[0015] Based on the above-mentioned embodiments of the present application, the strength of the buffer tube itself is strengthened by setting a reinforcement structure to enhance the impact resistance of the buffer tube. Specifically, by setting a first reinforcement rib, at least three first reinforcement ribs are connected to each other to support each other, thereby supporting from the inside of the buffer tube to enhance the buffer tube's ability to resist deformation when responding to impact. On the basis of the first reinforcement rib, a second reinforcement rib is further provided, and the second reinforcement rib is provided along the axial direction of the buffer tube, thereby enhancing the buffer tube's anti-bending performance and enhancing the buffer tube's resistance to liquefied gas impact.

[0016] In some embodiments, at least three groups of first reinforcing ribs are axially arranged in the buffer tube, a second reinforcing rib is connected between any two adjacent first reinforcing ribs, and any two adjacent second reinforcing ribs are staggered.

[0017] Based on the above-mentioned embodiments of the present application, by setting multiple groups of first reinforcing ribs, the deformation resistance of the buffer tube can be better enhanced. At this time, the second reinforcing ribs connected between two adjacent groups of first reinforcing ribs are divided into multiple shorter second reinforcing ribs. Compared with a single longer second reinforcing rib, the second reinforcing ribs have better anti-bending performance. At the same time, by setting any adjacent second reinforcing ribs in a staggered manner, the buffer tube can be strengthened along the circumference of the buffer tube to cope with the impact of liquefied gas in different directions.

[0018] In some embodiments, the pump tower structure includes a liquid injection pipe, which passes through the top wall of the outer tank body to the inside of the outer tank body, and the liquid injection pipe is arranged in the buffer space. The liquid injection pipe passes through the bottom plate.

[0019] Based on the above-mentioned embodiments of the present application, during the use of the pump tower, the pump liquid pipe is used to pump out the liquefied gas, and by providing an injection pipe, it can be used to inject liquefied gas into the storage tank. At the same time, other pipeline structures can also be provided as needed in specific use. Furthermore, by providing the injection pipe in the buffer space between the pump liquid pipe and the buffer pipe, the injection pipe can also be protected externally by the buffer pipe, thereby preventing the injection pipe from being deformed or damaged by the impact of the liquefied gas to a certain extent, which affects the injection effect.

[0020] In some embodiments, a sleeve is fixedly disposed on the injection tube and the second reinforcing rib, and the injection tube is disposed in the sleeve.

[0021] Based on the above-mentioned embodiment of the present application, a sleeve is provided on the second reinforcing rib to further fix the injection pipe. At the same time, the sleeve can not only fix the injection pipe to a certain extent, but also leave a certain amount of deformable movement space, so as to better deal with the deformation of the injection pipe and other structures at low temperatures and the resonance caused by the sloshing of liquefied gas.

[0022] In some embodiments, the pump tower structure includes a base, which is connected to the lower end of the pump pipe to limit the movement of the pump pipe in the horizontal direction. The upper end of the base passes through the bottom plate, and the bottom plate is fixedly connected to the base.

[0023] Based on the above-mentioned embodiments of the present application, a base is provided to fix the lower end of the pump liquid pipe, and when fixed, only the movement of the pump liquid pipe in the horizontal direction is restricted, that is, the pump liquid pipe can move relative to the base in the vertical direction, so that a certain movable space can be reserved when the pump liquid pipe is deformed due to low temperature. By connecting the lower end of the bottom plate to the base, it is possible to fix the lower end of the buffer plate and avoid affecting the pump liquid pipe. When the buffer pipe is impacted by liquefied gas, the impact force acting on the buffer pipe is transmitted to the base, rather than directly transmitted to the pump liquid pipe, thereby reducing the impact on the pump liquid pipe and improving the protection of the pump liquid pipe.

[0024] According to a second aspect of the present application, a liquefied gas storage tank is provided, which includes an outer tank body, a film enclosure system and the above-mentioned pump tower structure. The film enclosure system is arranged on the inner wall of the outer tank body, and the pump tower structure passes through the top wall of the outer tank body to connect the outer and inner parts of the outer tank body.

[0025] Based on the above embodiments of the present application, the liquefied gas storage tank provided by the present application includes the above pump tower structure. Through the above configuration, the buffer tube is sleeved on the outside of the pump liquid tube to protect the pump liquid tube. When the liquefied gas storage tank shakes and drives the internal liquefied gas to shake, the impact force generated by the shaking of the liquefied gas directly acts on the buffer tube, avoiding the impact causing the pump liquid tube to deform or be damaged and affecting the pumping effect. Thereby improving the overall reliability and stability of the pump tower in the liquefied gas storage tank, and further improving the overall practicality of the liquefied gas storage tank.

[0026] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application but do not constitute a limitation to the present application. In the accompanying drawings: Figure 1 It is a structural schematic diagram of the pump tower structure provided in the embodiment of the present application.

[0028] Figure 2 It is a cross-sectional schematic diagram of the pump tower structure provided in the embodiment of the present application.

[0029] Figure 3 It is a cross-sectional schematic diagram of a fixed plate and a clamping block in a pump tower structure provided in an embodiment of the present application.

[0030] Figure 4 It is a cross-sectional schematic diagram of the pump tower structure provided in an embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of the structure of the pump liquid pipe and the base in the pump tower provided in the embodiment of the present application.

[0032] Figure 6 yes Figure 1 Enlarged schematic diagram of part A.

[0033] 1. Pump liquid pipe; 2. Buffer pipe; 21. Buffer space; 3. Reinforcement structure; 31. First reinforcing rib; 32. Second reinforcing rib; 4. Liquid injection pipe; 5. Sleeve; 6. Base; 61. Liquid inlet; 7. Ladder; 8. Fixed plate; 9. Clamping block; 91. Connecting part; 92. Clamping part; 93. Buffer strip. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of this application, it should be noted that, in the absence of any contrary explanation, the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Liquefied gas storage tanks are special equipment for the storage and transportation of liquefied natural gas and liquefied petroleum gas. When liquefied gas storage tanks are used on transport ships, taking liquefied natural gas (LNG) transport ships as an example, a film enclosure system is set on the inner wall of the tank to achieve shielding and insulation effects. At the same time, a pump tower is set inside the tank for the injection and pumping of liquefied natural gas.

[0041] In the prior art, the pump tower is usually set up to extend vertically from the top wall of the concrete outer tank to the bottom of the tank, and a pump tower base is set on the bottom wall of the tank to fix the lower end of the pump tower. However, when the above structure is in use, the transport ship will shake due to wind and waves during navigation, and the liquefied natural gas inside the tank will also shake and impact the pump tower, which may cause damage to the pump tower in severe cases, affecting the injection and pumping of liquefied natural gas.

[0042] In order to solve the above problems in the prior art, according to the first aspect of the present application, an embodiment of the present application provides a pump tower structure, which passes through the top wall of the outer tank body to connect the inside and outside of the outer tank body. Figure 1 and Figure 2As shown in the figure, the pump tower structure includes a pump liquid pipe 1, a buffer pipe 2 and a fixed plate 8. The lower end of the pump liquid pipe 1 passes through the top wall of the outer tank body to the inside of the outer tank body. The buffer pipe 2 is sleeved on the outside of the pump liquid pipe 1, and a buffer space 21 is formed between the buffer pipe 2 and the pump liquid pipe 1. The fixed plate 8 is arranged at the upper end of the buffer pipe 2, and the fixed plate 8 protrudes radially from the upper end of the buffer pipe 2. Among them, the ends of the pump liquid pipe 1 are directly or indirectly fixed to the top wall and the bottom wall of the outer tank body, respectively, and the top wall of the outer tank body is provided with a clamping block 9, which is clamped with the fixed plate 8 and limits the movement of the fixed plate 8 in the vertical direction.

[0043] Based on the above-mentioned embodiments of the present application, a double-layer pump tower structure formed by a pump liquid pipe 1 and a buffer pipe 2 is provided, wherein the pump liquid pipe 1 is used for pumping and extracting liquid of liquefied gas. The buffer pipe 2 arranged outside the pump liquid pipe 1 is used to protect the pump liquid pipe 1. When the liquefied gas transport ship shakes due to waves or other reasons, the impact force generated by the shaking liquefied gas will directly act on the buffer pipe 2, which is separated by the buffer space 21 between the buffer pipe 2 and the pump liquid pipe 1, thereby avoiding the impact force directly acting on the pump liquid pipe 1 to cause deformation and damage of the pump liquid pipe 1, thereby avoiding affecting the pumping process of the liquefied gas.

[0044] Furthermore, by setting the end of the pump liquid tube 1 to be directly or indirectly connected to the top wall and the bottom wall of the outer tank body, the buffer tube 2 is connected to the top wall of the outer tank body through the clamping connection between the fixed plate 8 and the clamping block 9. At this time, when the buffer tube 2 is subjected to impact force, the impact force is transmitted to the outer tank body through the fixed plate 8 and other structures, and cannot directly act on the pump liquid tube 1, further reducing the impact on the pump liquid tube 1. At the same time, through the clamping fixation between the fixed plate 8 and the clamping block 9, the fixed plate 8 and the buffer tube 2 as a whole can move within a certain range when subjected to impact, thereby further reducing the possibility of damage to the buffer tube 2 when subjected to impact. Thereby improving the protection effect of the pump liquid tube 1.

[0045] Specifically, in the present application, the pump liquid pipe 1 is used for the input and output of liquefied gas, so in the specific production, processing and assembly process, multiple factors such as sealing, corrosion resistance and strength should be considered, and high requirements are placed on the material and connection process of the pump liquid pipe 1. The buffer pipe 2 is provided to protect the pump liquid pipe 1 outside the pump liquid pipe 1, so the requirements for sealing and other aspects in the production, processing and assembly process are relatively low, while the requirements for strength and other aspects are relatively high. Therefore, in the specific production, processing and assembly process, the pump liquid pipe 1 and the buffer pipe 2 can select different materials and assembly methods according to specific use requirements, and the present application does not impose specific restrictions on this.

[0046] In addition, it should be noted that the pump tower structure in the present application can be applied to liquefied gas transport ships for pumping during the input and output of liquefied gas, which can specifically include liquefied natural gas transport ships and liquefied petroleum gas transport ships, etc. Further, the pump tower structure in the present application can also be applied to other liquid material transport ships after adaptive modification, and similarly, by providing a buffer tube 2 outside the pump liquid pipe 1, the technical effect of reducing the impact of the liquid material on the pump liquid pipe 1 when the transport ship shakes can be achieved. The specific pump tower structure and connection method can be adaptively adjusted according to the actual application conditions, and the present application does not impose specific restrictions on this.

[0047] Furthermore, in the present application, the buffer tube 2 is used to buffer and protect the pump liquid tube 1 outside the pump liquid tube 1. Therefore, compared with the pump liquid tube 1, the buffer tube 2 has lower requirements in terms of sealing and other aspects. Even if a small amount of liquefied gas material leaks into the buffer space 21, it will not have much impact on the buffer effect of the buffer tube 2. Therefore, in the actual production, processing and assembly process, the buffer tube 2 can be set to a modular structure, that is, a plurality of smaller buffer tube 2 modules are spliced ​​to form the final buffer tube 2 overall structure. At this time, it is not only convenient for processing and assembly, and reduces the production and processing costs, but also convenient for later maintenance and overhaul. During specific production and processing, the buffer tube 2 can be divided into multiple identical cylindrical structures along the axial direction and then spliced ​​in sequence, or the buffer tube 2 can be further divided into a semicircular module structure. It can be specifically set according to factors such as the production and processing technology, and this application does not impose specific restrictions on this.

[0048] Furthermore, the above-mentioned “the ends of the pump liquid pipe 1 are respectively directly or indirectly fixed to the top wall and the bottom wall of the outer tank body” in the present application means that the pump liquid pipe 1 is indirectly connected to the top wall and the bottom wall of the outer tank body through other structures. For example, when the lower end of the pump liquid pipe 1 is fixed, it can be indirectly fixed to the film enclosure structure at the bottom of the storage tank through a structure such as a base 6, and the film enclosure structure is connected to the bottom wall of the outer tank body, thereby realizing indirect fixation of the pump liquid pipe 1 to the bottom wall of the outer tank body. Similarly, the buffer tube 2 can also be indirectly fixed to the top wall and the bottom wall of the outer tank body in a similar manner.

[0049] In some embodiments of the present application, a bottom plate (not shown) may be provided at the lower end of the buffer tube 2 to seal the lower end of the buffer tube 2 , and the pumping tube 1 passes through the bottom plate.

[0050] Based on the above-mentioned embodiments of the present application, a bottom plate is provided at the bottom of the buffer tube 2 to seal the bottom of the buffer tube 2 so as to prevent liquefied gas from entering the buffer space 21 between the pump liquid pipe 1 and the buffer tube 2 to a certain extent.

[0051] In the present application, the clamping block 9 can be configured as any suitable structure.

[0052] refer to Figure 3 As shown in , in an exemplary embodiment provided by the present application, the clamping block 9 may include a connecting portion 91 and a clamping portion 92, the connecting portion 91 is connected to the top wall in the vertical direction, the clamping portion 92 is connected to the connecting portion 91, and forms an L-shaped structure with the connecting portion 91. The fixing plate 8 is clamped between the clamping portion 92 and the top wall.

[0053] Based on the above-mentioned embodiments of the present application, the clamping block 9 forms an L-shaped structure through the clamping portion 92 and the connecting portion 91, so as to be clamped with the fixed plate 8 protruding from the buffer tube 2, so as to limit the vertical movement of the buffer tube 2 and the fixed plate 8 as a whole, while allowing the fixed plate 8 and the buffer tube 2 to move in the horizontal direction.

[0054] Specifically, in actual use, the clamping block 9 can be configured as a circular ring structure as a whole, and can be composed of a plurality of two semicircular ring structures assembled and fixed during assembly, so as to facilitate clamping and fixing with the fixed disk 8. Alternatively, in some other embodiments, the clamping block 9 can also be configured as a plurality of separate block structures, which are arranged in a circumferential direction and are clamped and fixed with the fixed disk 8 respectively.

[0055] Furthermore, in some embodiments of the present application, a buffer strip 93 may be provided on the wall surface of the clamping block 9 facing the fixing plate 8 .

[0056] Based on the above-mentioned embodiments of the present application, by arranging a buffer strip 93 on the side of the clamping block 9 facing the fixed plate 8, buffer protection can be provided when the buffer tube 2 is impacted and moves horizontally to absorb part of the impact force.

[0057] When specifically configured, the buffer strip 93 can be configured at multiple positions of the clamping block 9. For example, a buffer strip 93 is configured on the side of the connecting portion 91 and the clamping portion 92 facing the fixed disk 8. In some other embodiments of the present application, a buffer strip 93 can also be configured on the side of the fixed disk 8 radially facing the clamping block 9. In actual use, the buffer strip 93 can be made of a material such as buffering cement, and can be configured specifically according to actual conditions, and the present application does not impose specific restrictions on this.

[0058] refer to Figures 2 to 4 As shown in , in some embodiments of the present application, a reinforcement structure 3 may be further provided in the buffer tube 2 to enhance the strength of the buffer tube 2. The reinforcement structure 3 may include a first reinforcement rib 31, which is connected to the inner wall of the buffer tube 2 and is perpendicular to the axis of the buffer tube 2. At least three first reinforcement ribs 31 are connected to each other to enclose the outside of the pumping tube 1.

[0059] Based on the above-mentioned embodiments of the present application, the strength of the buffer tube 2 itself is strengthened by providing a reinforcing structure 3 to enhance the impact resistance of the buffer tube 2. Specifically, by providing first reinforcing ribs 31, at least three first reinforcing ribs 31 are connected to each other to support each other, thereby providing support from the inside of the buffer tube 2 to enhance the anti-deformation capability of the buffer tube 2 when responding to an impact.

[0060] Specifically, when the first reinforcing ribs 31 are connected and supported in groups of three, the three first reinforcing ribs 31 are connected to form a triangular structure, which encloses the outside of the pump liquid tube 1 and supports the buffer tube 2 from the inside of the buffer tube 2, so as to increase the resistance of the buffer tube 2 to impact deformation. When the first reinforcing ribs 31 are in groups of four, the four first reinforcing ribs are connected to form a square structure, which supports the buffer tube 2 from the inside. Similarly, when the number of first reinforcing ribs 31 in each group is set to five, six, or even more, multiple first reinforcing ribs 31 are connected to each other to support the buffer tube 2 from the inside.

[0061] Furthermore, as the number of each group of first reinforcing ribs 31 increases, the polygonal structure formed by the interconnection of multiple first reinforcing ribs 31 becomes closer and closer to a circle, and the number of connection points between the polygonal structure and the inner wall of the buffer tube 2 increases successively, so that the overall support effect of the first reinforcing ribs 31 on the buffer tube 2 is gradually enhanced. However, at this time, the overall size of the first reinforcing ribs 31 also gradually increases, which leads to an increase in the required materials and cost, and the deformable space in a low temperature environment is gradually reduced. Therefore, in the actual production, processing and assembly process, the appropriate number of first reinforcing ribs 31 can be selected according to factors such as the strength requirements of the buffer tube 2, and this application does not impose specific restrictions on this.

[0062] refer to Figure 2 and Figure 4 As shown in , in some other embodiments of the present application, the reinforcing structure 3 further includes a second reinforcing rib 32, and the second reinforcing rib 32 is arranged along the axial direction of the buffer tube 2. At least two groups of first reinforcing ribs 31 are arranged axially in the buffer tube 2, and the two ends of the second reinforcing rib 32 are fixedly connected to different first reinforcing ribs 31 respectively.

[0063] Based on the above-mentioned embodiments of the present application, on the basis of the first reinforcing rib 31, a second reinforcing rib 32 is further provided, and the second reinforcing rib 32 is provided along the axial direction of the buffer tube 2, so as to enhance the bending resistance of the buffer tube 2 and enhance the resistance of the buffer tube 2 to the impact of liquefied gas.

[0064] Specifically, the second reinforcing rib 32 cooperates with the first reinforcing rib 31 to improve the anti-bending performance of the buffer tube 2 while improving its anti-impact deformation capability. In specific settings, the first reinforcing rib 31 and the second reinforcing rib 32 can be fixed by a variety of connection methods including welding, which can be specifically set according to factors such as connection strength requirements, and this application does not impose specific restrictions on this.

[0065] refer to Figure 2 and Figure 4 As shown in , in some embodiments of the present application, at least three groups of first reinforcing ribs 31 may be arranged in the buffer tube 2 along the axial direction, a second reinforcing rib 32 is connected between any two adjacent first reinforcing ribs 31, and any two adjacent second reinforcing ribs 32 are staggered.

[0066] Based on the above-mentioned embodiments of the present application, by setting a plurality of groups of first reinforcing ribs 31, the anti-deformation capability of the buffer tube 2 can be better enhanced. At this time, the second reinforcing ribs 32 connected between two adjacent groups of first reinforcing ribs 31 are divided into a plurality of shorter second reinforcing ribs 32. Compared with a single longer second reinforcing rib 32, the second reinforcing ribs 32 have better anti-bending performance. At the same time, by setting any adjacent second reinforcing ribs 32 in a staggered manner, the buffer tube 2 can be strengthened along the circumference of the buffer tube 2 to cope with the impact of liquefied gas in different directions.

[0067] Specifically, for example, three groups of first reinforcing ribs 31 are provided, and each group of first reinforcing ribs 31 is provided with three first reinforcing ribs. At this time, a second reinforcing rib 32 is connected between the first group of first reinforcing ribs 31 and the second group of first reinforcing ribs 31 from top to bottom, and then a second reinforcing rib 32 is connected between the second group of first reinforcing ribs 31 and the third group of first reinforcing ribs 31. And there is an angle between the axis of the two second reinforcing ribs 32 and the axial direction of the buffer tube 2. That is, the two second reinforcing ribs 32 are respectively located at different directions in the circumferential direction of the buffer tube 2, so as to enhance the resistance effect of the buffer tube 2 to impacts in different directions.

[0068] In addition, it should be noted that the specific shapes of the first reinforcing rib 31 and the second reinforcing rib 32 are not limited in the present application. In the actual production, processing and assembly process, the cross-sections of the first reinforcing rib 31 and the second reinforcing rib 32 can be set to any suitable shape. For example, the cross-sections of the first reinforcing rib 31 and the second reinforcing rib 32 can be set to a circular shape, which can ensure that both have high strength. Alternatively, the cross-sections of the first reinforcing rib 31 and the second reinforcing rib 32 can be set to a triangular or cross structure, which can still ensure a certain strength, and can save materials and reduce costs compared to a circular structure. It can be set specifically according to actual processing requirements, and the present application does not impose specific restrictions on this.

[0069] Furthermore, in some other embodiments of the present application, the pump tower structure may further include a buffer module. The buffer module is disposed between the buffer tube 2 and the pump liquid tube 1 to absorb the impact force directly acting on the buffer tube 2. Specifically, in the actual production, processing and assembly process, when the first reinforcing rib 31 is enclosed outside the pump liquid tube 1, a buffer material such as a buffer resin may be provided between the first reinforcing rib 31 and the pump liquid tube 1. The specific material may be selected based on factors such as the temperature in the storage tank, and the present application does not impose any specific restrictions on this.

[0070] refer to Figure 2 and Figure 4 As shown in , in some embodiments of the present application, the pump tower structure includes a liquid injection pipe 4, the liquid injection pipe 4 passes through the top wall of the outer tank body to the inside of the outer tank body, and the liquid injection pipe 4 is arranged in the buffer space 21. The liquid injection pipe 4 passes through the bottom plate.

[0071] Based on the above-mentioned embodiments of the present application, during the use of the pump tower, the pump liquid pipe 1 is used to pump out the liquefied gas, and by providing the injection pipe 4, it can be used to inject the liquefied gas into the storage tank. At the same time, other pipeline structures can also be provided as needed in specific use. Furthermore, by providing the injection pipe 4 in the buffer space 21 between the pump liquid pipe 1 and the buffer pipe 2, the injection pipe 4 can also be protected externally by the buffer pipe 2, thereby preventing the injection pipe 4 from being deformed or damaged due to the impact of the liquefied gas to a certain extent, thereby affecting the injection effect.

[0072] Specifically, when the pump tower structure is used, in addition to the pump liquid pipe 1 and the injection pipe 4, other pipeline structures can be set according to needs, such as a liquid measuring pipe, etc. It can be set according to actual functional requirements and other factors, and this application does not make specific restrictions on this.

[0073] refer to Figure 4 As shown in , in some embodiments of the present application, a sleeve 5 is fixedly provided on the injection tube 4 and the second reinforcing rib 32 , and the injection tube 4 is arranged in the sleeve 5 .

[0074] Based on the above-mentioned embodiment of the present application, the injection tube 4 is further fixed by setting the sleeve 5 on the second reinforcing rib 32. At the same time, the way of setting the sleeve 5 can not only fix the injection tube 4 to a certain extent, but also reserve a certain deformable moving space, so as to better deal with the deformation of the injection tube 4 and other structures at low temperatures and the resonance caused by the sloshing of liquefied gas.

[0075] Specifically, during the process of setting and assembling the sleeve 5, the sleeve 5 is sleeved on the outside of the injection tube 4 and a certain gap is left between the sleeve 5 and the injection tube 4. At this time, the sleeve 5 only needs to restrict the movement of the injection tube 4 in the horizontal direction, while the movement of the injection tube 4 in the vertical direction is restricted by the connection between the injection tube 4 and the top wall of the outer tank body and other structures.

[0076] Furthermore, a gap may be provided on the sleeve 5, for example, the sleeve 5 may be provided as a three-quarter ring structure or a two-thirds ring structure. In this case, the position of the injection tube 4 can be limited, and a certain deformable space can be reserved for the sleeve 5 to cope with the deformation of the sleeve 5 in a low temperature environment. At the same time, it can also save materials and reduce costs.

[0077] In addition, it should be understood that the above embodiment of the present application only provides a connection and fixing method between the injection tube 4 and the second reinforcing rib 32. When other pipeline structures such as a liquid measuring tube are also provided in the buffer space 21, they can also be fixed by providing a sleeve 5. At the same time, the size of the sleeve 5 can be set according to the size of the pipeline, and the present application does not make any specific restrictions on this.

[0078] refer to Figure 5 As shown in , in some embodiments of the present application, the pump tower structure includes a base 6, and the base 6 is connected to the lower end of the pump liquid pipe 1 to limit the movement of the pump liquid pipe 1 in the horizontal direction.

[0079] Based on the above-mentioned embodiment of the present application, the base 6 is provided to fix the lower end of the pumping tube 1, so as to realize indirect fixation between the pumping tube 1 and the bottom of the storage tank. When fixed, only the movement of the pumping tube 1 in the horizontal direction is restricted, that is, the pumping tube 1 can move relative to the base 6 in the vertical direction, so that a certain movable space can be reserved when the pumping tube 1 is deformed due to low temperature.

[0080] Specifically, in the embodiment of the present application, the base 6 can be set to any suitable structure. In specific use, any suitable base 6 structure in the prior art can be selected, and at the same time, the connection and fixing method between the base 6 and the pump liquid pipe 1 can also be selected in any suitable fixing method. Since the present application does not involve improvements to the structure of the base 6, it will not be repeated here.

[0081] refer to Figure 5 As shown in , in some embodiments of the present application, the upper end of the base 6 can pass through the bottom plate, and the bottom plate is fixedly connected to the base 6.

[0082] Based on the above-mentioned embodiment of the present application, by connecting the lower end of the bottom plate with the base 6, it is possible to fix the lower end of the buffer tube 2 and avoid affecting the pump liquid tube 1. When the buffer tube 2 is impacted by the liquefied gas, the impact force acting on the buffer tube 2 is transmitted to the base 6 instead of directly transmitted to the pump liquid tube 1, thereby reducing the impact on the pump liquid tube 1 and improving the protection of the pump liquid tube 1.

[0083] Specifically, the base 6 is connected to the pump liquid tube 1, and the lower end of the pump liquid tube 1 is inserted into the base 6 to fix the pump liquid tube 1 in the horizontal direction. At the same time, a liquid inlet 61 is opened on the side of the base 6, which is used as the inlet of the liquefied gas during pumping. At this time, when the bottom plate is fixed to the base 6, the fixed position should be higher than the position of the liquid inlet 61, that is, it can ensure the fixation between the bottom plate and the buffer tube 2 and the base 6, and avoid blocking the liquid inlet 61 to affect the pumping process. When connected specifically, the bottom plate and the base 6 can be connected and fixed by welding or other methods.

[0084] In addition, it should be noted that the pump tower structure in this application is not limited to the above part. Figure 6 As shown in , in order to facilitate the maintenance of the pump tower and the inside of the liquefied gas storage tank, a ladder 7 structure can also be provided on the pump tower structure, and the ladder 7 structure can be provided outside the buffer pipe 2.

[0085] According to a second aspect of the present application, a liquefied gas storage tank is provided, which includes an outer tank body, a film enclosure system and the above-mentioned pump tower structure. The film enclosure system is arranged on the inner wall of the outer tank body, and the pump tower structure passes through the top wall of the outer tank body to connect the outer and inner parts of the outer tank body.

[0086] Based on the above-mentioned embodiments of the present application, the liquefied gas storage tank provided by the present application includes the above-mentioned pump tower structure. Through the above-mentioned configuration, the buffer tube 2 is sleeved on the outside of the pump liquid tube 1 to protect the pump liquid tube 1. When the liquefied gas storage tank shakes and drives the internal liquefied gas to shake, the impact force generated by the shaking of the liquefied gas directly acts on the buffer tube 2, avoiding the impact that causes the pump liquid tube 1 to deform or be damaged and affect the pumping effect. Thereby improving the reliability and stability of the overall pump tower structure in the liquefied gas storage tank, and further improving the overall practicality of the liquefied gas storage tank.

[0087] Specifically, when the pump tower structure is set in a liquefied gas storage tank, the bottom of the pump tower structure needs to extend to the bottom of the tank to facilitate pumping of liquid. At this time, the base 6 and other structures need to cooperate with the film enclosure structure of the bottom wall of the tank to ensure that both the base 6 and the bottom wall of the tank can be stably and reliably fixed, while avoiding excessive impact on the sealing and insulation effects of the film enclosure system. Similarly, a matching structure, such as a pipe sleeve support, is also required between the pump tower structure and the insulation ceiling of the top wall of the tank. The sealing and insulation effects of the contact positions between the pump liquid pipe 1 and other structures and the insulation ceiling are strengthened by setting a matching structure.

[0088] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0089] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0090] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A pump tower structure, which passes through the top wall of the outer tank body to connect the inside and outside of the outer tank body, characterized in that: The pump tower structure comprises: A pump liquid pipe, the lower end of which passes through the top wall of the outer tank body to the interior of the outer tank body; a buffer tube, which is sleeved on the outside of the pump liquid tube and forms a buffer space between the buffer tube and the pump liquid tube; and A fixed plate, disposed at the upper end of the buffer tube, and the fixed plate protrudes radially from the upper end of the buffer tube; The ends of the pump liquid pipe are respectively fixed directly or indirectly to the top wall and the bottom wall of the outer tank body, and the top wall of the outer tank body is provided with a clamping block, which is clamped with the fixed disk and limits the movement of the fixed disk in the vertical direction.

2. The pump tower structure according to claim 1, characterized in that: A bottom plate is provided at the lower end of the buffer tube for closing the lower end of the buffer tube, and the pump liquid pipe passes through the bottom plate.

3. The pump tower structure according to claim 1, characterized in that: The clamping block comprises a connecting portion and a clamping portion, wherein the connecting portion is connected to the top wall along a vertical direction, and the clamping portion is connected to the connecting portion and forms an L-shaped structure with the connecting portion; The fixing plate is clamped between the clamping portion and the top wall.

4. The pump tower structure according to claim 3, characterized in that: A buffer strip is arranged on the wall surface of the clamping block facing the fixing plate.

5. The pump tower structure according to claim 2, characterized in that: A reinforcement structure is provided inside the buffer tube to enhance the strength of the buffer tube itself; The reinforcement structure includes a first reinforcement rib and a second reinforcement rib, wherein the first reinforcement rib is connected to the inner wall of the buffer tube and is perpendicular to the axis of the buffer tube, and at least three of the first reinforcement ribs are connected to each other to enclose the outside of the pump liquid tube; The second reinforcing ribs are arranged along the axial direction of the buffer tube, at least two groups of the first reinforcing ribs are arranged axially in the buffer tube, and two ends of the second reinforcing ribs are respectively fixedly connected to different first reinforcing ribs.

6. The pump tower structure according to claim 5, characterized in that: At least three groups of the first reinforcing ribs are axially arranged in the buffer tube, the second reinforcing ribs are connected between any two adjacent first reinforcing ribs, and any two adjacent second reinforcing ribs are staggered.

7. The pump tower structure according to claim 5, characterized in that: The pump tower structure includes a liquid injection pipe, which passes through the top wall of the outer tank body to the interior of the outer tank body, and the liquid injection pipe is arranged in the buffer space; The liquid injection pipe passes through the bottom plate.

8. The pump tower structure according to claim 7, characterized in that: A sleeve is fixedly arranged on the injection pipe and the second reinforcing rib, and the injection pipe is arranged in the sleeve.

9. The pump tower structure according to claim 2, characterized in that: The pump tower structure includes a base, and the base is connected to the lower end of the pump liquid pipe to limit the movement of the pump liquid pipe in the horizontal direction; The upper end of the base passes through the bottom plate, and the bottom plate is fixedly connected to the base.

10. A liquefied gas storage container, characterized in that: The liquefied gas storage container comprises: Outer tank; A film enclosure system is arranged on the inner wall of the outer tank; and The pump tower structure according to any one of claims 1 to 9, wherein the pump tower structure passes through the top wall of the outer tank body to connect the inside and outside of the outer tank body.

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