A pump tower and fluid storage tank

Abstract

This application discloses a pump tower and a fluid storage tank, including a storage tank insulation module. The pump tower includes a pump tower base, a guiding device, a connecting support rod, and a base plate. The pump tower also includes an anti-tilting support frame. This application provides several outwardly extending anti-tilting support frames on the outer wall of the pump tower base, and the anti-tilting support frames are plugged into the guiding device. When the pump tower generates tilting moment or lateral shear force due to ship swaying or internal fluid impact, the curved surface of the anti-tilting support frame can physically limit and support the guiding device, preventing irregular displacement of the guiding device and the base plate. This application disperses the multi-directional stress at the bottom of the pump tower, improving the anti-tilting capability and service life of the storage tank pump tower structure under complex dynamic load environments. It also discloses a fluid storage tank including a pump tower, which improves the anti-tilting capability and overall operational safety of internal equipment under complex dynamic loads and fluid impacts, and extends the service life of the storage tank system.

Description

Technical Field

[0001] This application relates to the field of liquefied natural gas storage tank structure technology, and in particular to a pump tower and fluid storage tank. Background Technology

[0002] Liquefied natural gas (LNG) storage tanks are widely used in land-based and marine applications. Large marine tanks typically incorporate pump tower structures for the extraction and transportation of LNG, with supporting or guiding components connected to the pump tower base. Existing pump tower bottom connections are often directly fixed to the tank or base via simple flanges or flat welds to minimize the risk of tilting and damage due to lateral forces. However, marine tanks are subjected to complex dynamic loads and impacts from various directions, including ship swaying and medium sloshing, during actual operation. Existing structures often only provide support in specific directions, lacking effective multi-directional anti-tipping and limiting mechanisms. Under long-term, complex stress conditions, the guiding components at the pump tower base are prone to lateral displacement or uneven stress, leading to deformation of the connection points, structural instability, and even damage. Summary of the Invention

[0003] In order to improve the shortcomings of existing pump towers that are easily damaged under multi-directional forces, this application provides a pump tower and a fluid storage tank.

[0004] The pump tower and fluid storage tank provided in this application adopt the following technical solution:

[0005] A pump tower for loading and / or unloading fluids in a storage tank, the storage tank having a storage tank insulation module; the pump tower includes a pump tower base fixedly connected to the tank wall of the storage tank, a guiding device, a connecting support rod, and a base plate connected to the connecting support rod; wherein the guiding device is connected to the lower side of the base plate and contacts the pump tower base; the pump tower further includes a plurality of anti-tilting support frames, the plurality of anti-tilting support frames being fixedly connected to the outer side wall of the pump tower base, the anti-tilting support frames having curved surfaces for contacting the guiding device and extending in a direction away from the pump tower base; the anti-tilting support frames are inserted into the guiding device to limit the displacement of the guiding device.

[0006] By adopting the above technical solution, the pump tower base is fixed to the tank wall of the storage tank to form a stable foundation support point. The connecting support rod is connected to the base plate to provide a load-bearing foundation for the superstructure. The guiding device is set on the lower side of the base plate and contacts the pump tower base, playing a role in transferring load and positioning. This application sets several outwardly extending anti-tilting support frames on the outer wall of the pump tower base, and the anti-tilting support frames and the guiding device are interlocked. When the ship rolls or the internal fluid impact causes the pump tower to generate tilting moment or lateral shear force, the curved surface of the anti-tilting support frame can directly form physical limit and support for the guiding device, preventing the guiding device and the base plate from undergoing irregular displacement. This interlocking limit combined with multi-directional anti-tilting design effectively disperses the multi-directional stress at the bottom of the pump tower, improving the anti-tipping ability and service life of the storage tank pump tower structure under complex dynamic load environment.

[0007] Preferably, the guiding device is provided with a limiting through hole for inserting the anti-tilt support frame, and the inner sidewall of the limiting through hole is in close contact with the outer sidewall of the anti-tilt support frame.

[0008] By adopting the above technical solution, the anti-tilt support frame directly passes through and is inserted into the limiting through hole on the guide device. The inner side wall of the limiting through hole is tightly fitted with the outer side wall of the anti-tilt support frame, forming an interference or gapless fit. This through-type insertion not only locks the guide device in the horizontal direction to prevent the guide device from sliding arbitrarily to the side, but also ensures the tightness of the connection node under long-term vibration conditions, thus improving the limiting effect.

[0009] Preferably, the anti-tilting support frame includes a first anti-tilting bracket fixedly connected to the pump tower base, and a second anti-tilting bracket located below the first anti-tilting bracket and fixedly connected to the outer wall of the pump tower base; multiple first anti-tilting brackets and multiple second anti-tilting brackets are provided, and multiple first anti-tilting brackets and second anti-tilting brackets are arranged in an array along the outer periphery of the pump tower base, and the first anti-tilting brackets and second anti-tilting brackets are staggered.

[0010] By adopting the above technical solution, the first anti-tilting support 61 and the second anti-tilting support 62 are arranged in a spatial array with upper and lower layers and circumferential staggered arrangement, thus constructing a 360-degree all-round, no-dead-angle staggered anti-tilting network. This not only expands the effective force-bearing area of ​​the base periphery, but also utilizes the height difference and circumferential stagger to form an anti-torsional couple effect, avoiding structural weak points and stress concentration areas that exist in a single horizontal plane or a single direction. This improves the pump tower's force balance, anti-overturning stiffness, and fatigue resistance during long-term operation when dealing with multi-dimensional complex dynamic loads.

[0011] Preferably, the anti-tilting support frame is semi-circular, and the anti-tilting support frame and the outer wall of the pump tower base are arranged to form a buffer cavity that runs vertically through the base.

[0012] By adopting the above technical solution, the anti-tilting support frame is designed as a semi-circular arc and a buffer cavity is formed inside it. The bending section modulus of the arc structure is used to improve the deformation resistance of the support frame itself, which has the functions of buffering and unloading.

[0013] Preferably, a limiting top pressure groove is provided between two adjacent anti-tilting support frames, and the guiding device includes a plurality of guiding limiting components fixedly connected to the lower side of the base plate. The guiding limiting components are used to be inserted into the limiting top pressure groove in the vertical direction.

[0014] By adopting the above technical solution, the guide and limiting components are "fitted" into the gaps between the support frames, forming a circumferential toothed groove anti-torsion and anti-displacement structure, which enhances the pump tower's ability to resist torque.

[0015] Preferably, the pump tower base includes a base body and a skirt-type support fixedly connected to the lower end of the base body.

[0016] By adopting the above technical solution, the skirt support base lowers the center of gravity at the bottom of the base through the skirt-shaped gradually expanding structure, and evenly distributes the concentrated load transmitted from the upper pump tower to the storage tank insulation module, thereby improving the stability of the pump tower base.

[0017] Preferably, the skirt-type support includes a flange base and a fixed support flange that is connected to the lower end of the flange base and fixedly connected to the tank insulation module.

[0018] By adopting the above technical solution, the skirt support extends the stress area downward through the flange base and is deeply fixed to the tank insulation module through the fixed support protrusion; this avoids the phenomenon of insulation module crushing caused by excessive local stress and enhances the stability of the foundation base.

[0019] Preferably, the pump tower base further includes an annular support plate inserted into the base body and fixedly connected to the inner side wall of the base body.

[0020] By adopting the above technical solution, an annular support plate is added inside the base body, which acts as a reinforcing rib, improves the radial stiffness and compressive strength of the base body itself, and prevents the base body from becoming unstable or crushed under huge external extrusion pressure or cold shrinkage deformation caused by cryogenic temperature.

[0021] Preferably, it further includes a pump tower support seat sleeved around the periphery of the pump tower base and fixedly connected to the outer wall of the pump tower base; the pump tower support seat includes a pump tower support plate fixedly connected to the outer wall of the pump tower base, and an arc-shaped support boss connected to the bottom of the pump tower support plate and extending downward; the arc-shaped support boss is fixedly connected to the outer wall of the pump tower base.

[0022] By adopting the above technical solution, the pump tower support seat is sleeved on the outside of the pump tower base, which plays the role of external clamp reinforcement; the arc support boss extends downward and fits and is fixed to the outer wall of the base, so that the stress transmission path presents a smooth transition, eliminating the stress concentration point at the right angle connection, improving the fatigue strength of the connection part, and ensuring the safety of long-term operation.

[0023] A fluid storage tank, including the aforementioned pump tower.

[0024] By adopting the above technical solution, the fluid storage tank of this application, through the aforementioned highly stable pump tower structure, improves the anti-overturning ability and overall operational safety of the internal equipment under complex dynamic loads and fluid impacts, and extends the service life of the storage tank system.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. A pump tower, by setting an outwardly extending anti-tilting support frame on the pump tower base and inserting it into the guide device, can directly limit the physical displacement of the guide device during the stress process, effectively disperse and buffer the multi-directional impact loads on the bottom of the pump tower, prevent the base plate and guide device from tilting or becoming unstable, and improve the connection strength and safety of the marine storage tank pump tower structure under complex load environment.

[0027] 2. A pump tower, wherein the anti-tilting support frame is divided into a first anti-tilting bracket and a second anti-tilting bracket arranged in an array, which work together to disperse axial, radial and eccentric impact loads in all directions and improve the pump tower base's resistance to overturning moment at any angle.

[0028] 3. A fluid storage tank, through a pump tower structure, enhances the anti-overturning capability and overall operational safety of internal equipment under complex dynamic loads and fluid impacts, and extends the service life of the storage tank system. Attached Figure Description

[0029] Figure 1 This is an exploded view of Embodiment 1 of this application. Figure 1 .

[0030] Figure 2 This is an exploded view of Embodiment 1 of this application. Figure 2 .

[0031] Figure 3 This is an exploded structural diagram of Embodiment 2 of this application.

[0032] Figure 4 This is a three-dimensional structural diagram of the anti-tilting support frame according to Embodiment 1 of this application.

[0033] Figure 5This is a three-dimensional structural diagram of the pump tower base and pump tower support in Embodiment 1 of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Storage tank insulation module; 2. Pump tower base; 21. Base body; 22. Skirt support seat; 221. Flange base; 222. Fixed support flange; 23. Annular support plate; 3. Guiding device; 31. Guiding and limiting component; 4. Connecting support rod; 5. Base plate; 6. Anti-tilting support frame; 61. First anti-tilting bracket; 62. Second anti-tilting bracket; 63. Buffer cavity; 64. Limiting top pressure groove; 7. Limiting through hole; 8. Pump tower support seat; 81. Pump tower support plate; 82. Arc support boss. Detailed Implementation

[0036] The following is in conjunction with the appendix Figures 1 to 5 This application will be described in further detail.

[0037] This application discloses a pump tower and a fluid storage tank comprising the pump tower. (See also...) Figure 1 A pump tower is used for loading and / or unloading fluids in a storage tank, the storage tank being equipped with a storage tank insulation module 1; the pump tower includes a pump tower base 2 fixedly connected to the tank wall, a guiding device 3, a connecting support rod 4, and a base plate 5 connected to the connecting support rod 4; wherein the guiding device 3 is connected to the lower side of the base plate 5 and contacts the pump tower base 2; the pump tower also includes a plurality of anti-tilting support frames 6, the plurality of anti-tilting support frames 6 being fixedly connected to the outer side wall of the pump tower base 2, the anti-tilting support frames 6 having curved surfaces for contacting the guiding device 3 and extending in a direction away from the pump tower base 2; the anti-tilting support frames 6 are inserted into the guiding device 3 to limit the displacement of the guiding device 3.

[0038] When the upper tower body is subjected to dynamic impact forces in complex directions, the load is first transmitted downwards to the base plate 5 through the vertically arranged connecting support rods 4, and then transmitted to the guide device 3 fixed to the lower side of the base plate 5. At this time, the guide device 3 exerts downward pressure on the pump tower base 2 at the contact surface, and under the influence of lateral forces, it will have a tendency to slide or overturn in all directions. Several anti-tilting support frames 6 fixedly connected to the outer wall of the pump tower base 2, through the pre-formed plug-in cooperation structure with the guide device 3, rigidly interfere with and block the small displacement tendency of the guide device 3 in the horizontal radial and circumferential directions. The lateral displacement of the guiding device 3 is forcibly restricted, and the lateral impact force is converted into the internal force of the anti-tipping support frame 6, which is safely transmitted along the pump tower base 2 to the tank insulation module 1 of the base and the tank wall of the tank for dissipation. This application constructs a multi-directional anti-tipping mechanical transmission structure by introducing the anti-tipping support frame 6 around the base and accurately inserting and limiting it with the guiding device 3. This effectively resists the multi-dimensional shear force and overturning moment of the low temperature fluid, prevents the lateral displacement and structural tearing instability of the bottom of the pump tower, and improves the overall connection rigidity, impact resistance and structural safety of the equipment under harsh and complex working conditions.

[0039] The preferred cryogenic fluid is liquefied natural gas (LNG).

[0040] Furthermore, in Example 1, as... Figure 1 As shown, the guide device 3 has limiting through holes 7 corresponding to the number and position of the anti-tilting support frames 6. During the pump tower hoisting and placement, the guide device 3 fits in from top to bottom, allowing the anti-tilting support frames 6 to smoothly pass through and insert into the limiting through holes 7. The inner wall of the limiting through holes 7 is tightly fitted against the outer wall of the anti-tilting support frames 6. This through-type insertion ensures that the guide device 3 will be held in place by the anti-tilting support frames 6 regardless of the direction of the horizontal shear force, reducing the risk of slippage.

[0041] In this application, the storage tank insulation module 1 and the pump tower base 2 are fixedly connected by welding. In this application, the guiding device 3 is first heated during the assembly process to cause thermal expansion. Then, the anti-tilting support frame 6 is inserted into the limiting through hole 7 for assembly. The liquefied natural gas (LNG) storage tank is in a cryogenic environment. The limiting through hole 7 shrinks under low temperature conditions. The inner wall of the limiting through hole 7 and the outer wall of the anti-tilting support frame 6 form a tight interference fit, thereby achieving a stable limiting connection and a long-term reliable low-temperature sealing effect.

[0042] Furthermore, such as Figure 1 and Figure 2As shown, the anti-tilting support frame 6 includes a first anti-tilting bracket 61 and a second anti-tilting bracket 62 in its structural arrangement. The first anti-tilting bracket 61 is fixed to the upper middle outer wall of the pump tower base 2, while the second anti-tilting bracket 62 is located directly below the first anti-tilting bracket 61 and is also fixed to the outer wall of the pump tower base 2.

[0043] Multiple first anti-roll supports 61 and second anti-roll supports 62 are arranged in a ring array along the outer periphery of the pump tower base 2. Furthermore, to ensure more uniform force distribution on the base, the first anti-roll supports 61 and second anti-roll supports 62 are staggered in the circumferential direction. This spatially staggered array constructs an anti-roll network resembling "staggered teeth." When the ship encounters complex waves causing impacts from various directions, the alternating support points can more efficiently decompose the overturning moment.

[0044] When the pump tower is subjected to multi-directional fluid sloshing impact or external shaking under complex sea conditions or operating conditions, causing the upper structure of the pump tower to have a tendency to slide laterally or overturn, the dynamic load will be transmitted downward to the anti-tilting support frame 6. At this time, multiple first anti-tilting supports 61 and second anti-tilting supports 62 arranged in an array along the outer periphery of the pump tower base 2 begin to work together to play a role in spatial limitation and resistance. Since the first anti-tilting supports 61 and the second anti-tilting supports 62 located below them are staggered in the circumferential direction, the overturning moment and lateral shear force transmitted from the upper part, regardless of the angle, will be accurately intercepted and decomposed to the support nodes at different heights and different circumferential orientations. This ensures that when the anti-tilting support frame 6 resists eccentric impacts from any direction, there is always a combination of supports in the best force-bearing orientation to physically block and rigidly interfere, thereby converting the concentrated destructive force into the internal force of the support and evenly dispersing it to the wide outer wall of the pump tower base 2 for absorption and dissipation.

[0045] This application constructs a 360-degree all-round, no-dead-angle staggered anti-tilting network by arranging the first anti-tilting support 61 and the second anti-tilting support 62 in a spatial array layout with upper and lower layers and circumferential stagger. This not only expands the effective force-bearing area of ​​the base perimeter, but also utilizes the height difference and circumferential stagger to form an anti-torsional couple effect, avoiding structural weak points and stress concentration areas that exist in a single horizontal plane or a single direction. This improves the pump tower's force balance, anti-overturning stiffness, and fatigue resistance during long-term operation when dealing with multi-dimensional complex dynamic loads.

[0046] Specifically, regarding the shape of a single anti-tilt support 6, such as Figure 1 As shown, the anti-tilt support frame 6 is a semi-circular arc-shaped tubular or plate-shaped bent component. The open side of the anti-tilt support frame 6 faces the pump tower base 2, and its edge is welded to the outer wall of the pump tower base 2, thereby forming a vertically continuous buffer cavity 63 between the anti-tilt support frame 6 and the outer wall of the pump tower base 2. This tubular structure has higher bending resistance and plays a buffering role.

[0047] In addition, a second embodiment was also disclosed, such as... Figure 3 As shown, a limiting top pressure groove 64 is provided between two adjacent anti-tilting support frames 6 on the outer periphery of the pump tower base 2. The guiding device 3 also includes a plurality of guiding limiting components 31 fixedly connected to the lower side of the base plate 5. These guiding limiting components 31 are inserted vertically into the limiting top pressure groove 64. When the pump tower is subjected to circumferential torsional moment, the side wall of the guiding limiting component 31 will directly press against the side of the anti-tilting support frame 6, forming an anti-torsional defense line; the guiding limiting component 31 is preferably a downwardly extending limiting block or insert plate.

[0048] Example 1, refer to Figure 4 and Figure 5 The pump tower base 2 includes a base body 21 as the main body and a skirt-type support 22 fixedly connected to the lower end of the base body 21. The skirt-type support 22 is a tapered flared shape with a smaller top and a larger bottom, and its bottom is integrally formed or welded with a flange base 221. The lower end of the flange base 221 is further connected to a fixed support flange 222, which is deeply driven into and fixed in the storage tank insulation module 1 by bolts or anchors. The flared skirt-type support 22 increases the stress-bearing bottom area of ​​the base, effectively reducing the pressure on the bottom storage tank insulation module 1 or resin substrate and preventing crushing.

[0049] At the same time, such as Figure 4 As shown, in order to resist the contraction of the cryogenic environment and external hydraulic pressure, an annular support plate 23 is inserted and welded inside the base body 21. The annular support plate 23 is inserted into the inner cavity of the base body 21, which enhances the compressive strength of the cylindrical base and ensures that its cross-section remains true circle.

[0050] Specifically, such as Figure 5 As shown, this application also includes a pump tower support seat 8 fitted onto the outer periphery of the pump tower base 2. The pump tower support seat 8 is located below the anti-tilting support frame 6 and includes a pump tower support plate 81 that surrounds and hugs the base body, and an arc-shaped support boss 82 extending downward from the bottom of the pump tower support plate 81. The inner arc surface of the arc-shaped support boss 82 is tightly fitted and fixedly connected to the outer wall of the pump tower base 2. The pump tower support seat 8 serves as a reinforcing fixing seat on the outside of the pump tower base 2. The arc-shaped support boss 82 effectively eliminates welding stress concentration, enhancing the structural redundancy and fatigue life of the entire base system.

[0051] This application also discloses a fluid storage tank, including a pump tower. Through the aforementioned highly stable pump tower structure, the fluid storage tank of this application improves the anti-overturning capability and overall operational safety of internal equipment under complex dynamic loads and fluid impacts, thereby extending the service life of the storage tank system.

[0052] The implementation principle of a pump tower in this application embodiment is as follows:

[0053] When the upper tower body is subjected to dynamic impact forces in complex directions, the load is first transmitted downwards to the base plate 5 through the vertically arranged connecting support rods 4, and then transmitted to the guide device 3 fixed to the lower side of the base plate 5. At this time, the guide device 3 exerts downward pressure on the pump tower base 2 at the contact surface, and under the influence of lateral forces, it will have a tendency to slide or overturn in all directions. Several anti-tilting support frames 6 fixedly connected to the outer wall of the pump tower base 2, through the pre-formed plug-in structure with the guide device 3, rigidly interfere with and block the small displacement tendency of the guide device 3 in the horizontal radial and circumferential directions. The lateral displacement of the guiding device 3 is forcibly restricted, and the lateral impact force is converted into the internal force of the anti-tipping support frame 6, which is safely transmitted along the pump tower base 2 to the storage tank insulation module 1 and the storage tank for dissipation. This application constructs a multi-directional anti-tipping mechanical transmission structure by introducing the anti-tipping support frame 6 around the base and accurately inserting and limiting it with the guiding device 3. This effectively resists the multi-dimensional shear force and overturning moment of the low-temperature fluid, prevents the lateral displacement and structural tearing instability of the bottom of the pump tower, and improves the overall connection rigidity, impact resistance and structural safety of the equipment under harsh and complex working conditions.

[0054] Multiple first anti-roll supports 61 and second anti-roll supports 62 are arranged in a ring array along the outer periphery of the pump tower base 2. Furthermore, to ensure more uniform stress on the base, the first anti-roll supports 61 and second anti-roll supports 62 are staggered in the circumferential direction. This spatially staggered array constructs an anti-roll network resembling "staggered teeth." When the ship encounters complex waves causing impacts from various directions, the alternating support points can more efficiently decompose the overturning moment.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pump tower for loading and / or unloading fluid in a storage tank, the storage tank being provided with a storage tank insulation module (1); the pump tower includes a pump tower base (2) fixedly connected to the tank wall of the storage tank, a guiding device (3), a connecting support rod (4), and a base plate (5) connected to the connecting support rod (4); wherein, The guiding device (3) is connected to the lower side of the base plate (5) and is in contact with the pump tower base (2); characterized in that the pump tower further includes a plurality of anti-tilting support frames (6), the plurality of anti-tilting support frames (6) are fixedly connected to the outer side wall of the pump tower base (2), the anti-tilting support frame (6) has a curved surface for contacting the guiding device (3) and extends in a direction away from the pump tower base (2); the anti-tilting support frame (6) is inserted into the guiding device (3) to limit the displacement of the guiding device (3); The guide device (3) is provided with a limiting through hole (7) for inserting the anti-tilt support frame (6), and the inner wall of the limiting through hole (7) is close to the outer wall of the anti-tilt support frame (6). The anti-tilting support frame (6) is semi-circular, and the anti-tilting support frame (6) and the outer wall of the pump tower base (2) are arranged to form a buffer cavity (63) that runs vertically through the pump tower.

2. A pump tower according to claim 1, characterized in that, The anti-tilting support frame (6) includes a first anti-tilting bracket (61) fixedly connected to the pump tower base (2), and a second anti-tilting bracket (62) located below the first anti-tilting bracket (61) and fixedly connected to the outer side wall of the pump tower base (2); Multiple first anti-tilt brackets (61) and multiple second anti-tilt brackets (62) are provided. Multiple first anti-tilt brackets (61) and multiple second anti-tilt brackets (62) are arranged in an array along the outer periphery of the pump tower base (2), and the first anti-tilt brackets (61) and the second anti-tilt brackets (62) are arranged alternately.

3. A pump tower according to claim 1, characterized in that, The pump tower base (2) includes a base body (21) and a skirt-type support base (22) fixedly connected to the lower end of the base body (21).

4. A pump tower according to claim 3, characterized in that, The skirt-type support base (22) includes a flange base (221) and a fixed support flange (222) that is connected to the lower end of the flange base (221) and fixedly connected to the tank insulation module (1).

5. A pump tower according to claim 3, characterized in that, The pump tower base (2) also includes an annular support plate (23) inserted into the base body (21) and fixedly connected to the inner side wall of the base body (21).

6. A pump tower according to claim 1, characterized in that, It also includes a pump tower support base (8) sleeved around the pump tower base (2) and fixedly connected to the outer wall of the pump tower base (2); the pump tower support base (8) includes a pump tower support plate (81) fixedly connected to the outer wall of the pump tower base (2), and an arc support boss (82) connected to the bottom of the pump tower support plate (81) and extending downward; the arc support boss (82) is fixedly connected to the outer wall of the pump tower base (2).

7. A fluid storage tank, characterized in that, Includes a pump tower as described in any one of claims 1 to 6.

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