Thin film tank pump tower base device

Abstract

The invention discloses a thin film tank pump tower base device, and belongs to the technical field of LNG storage and transportation, the thin film tank pump tower base device comprises a base main body, the base main body is cylindrical, the periphery of the base main body is provided with a first connecting part, and the first connecting part is connected with a first shielding layer; wherein the first connecting part is annular, the first shielding layer is formed by splicing two corrugated plates, the two corrugated plates are integrally formed, a circular through hole is formed in the connected end face of the two corrugated plates, and the two corrugated plates are directly connected with the first connecting part. According to the pump tower base, the corrugated plate is integrally formed, the base body is directly connected with the specially-made corrugated plate, the problem that a conventional pump tower base needs to be in transition connection through a connecting plate is solved, the problem that the connecting plate and the corrugated plate are not smoothly connected is solved, the installation procedure of the pump tower base can be simplified, and the preparation efficiency of a thin film tank is improved.

Description

Technical Field

[0001] This invention belongs to the field of LNG storage and transportation technology, specifically relating to a membrane tank pump tower base device. Background Technology

[0002] Cryogenic membrane tanks are large tank structures used for storing cryogenic media such as liquefied natural gas (LNG), typically for the storage and long-distance transportation of LNG. From the inside out, a cryogenic membrane tank generally consists of a main shielding layer, a main plywood layer, a secondary shielding layer, and an insulation box.

[0003] Due to the low temperature and easy expansion characteristics of LNG, the inner wall of cryogenic membrane tanks is usually made of corrugated plates. The corrugated surface of the plates can accommodate contraction, thus addressing the issue of LNG's supercooling and contraction. In addition to the corrugated plate inner membrane tank, cryogenic membrane tanks also require components such as pump towers and cooling equipment. The pump tower runs through the inside of the membrane tank for LNG input and output. The pump tower typically requires connecting structures at the top and bottom of the membrane tank for fixation; therefore, a pump tower base is needed to secure the pump tower within the membrane tank.

[0004] In the conventional fabrication of cryogenic thin-film tanks, the pump tower base is placed on the upper surface of the outer tank structure. The pump tower base needs to penetrate the main shielding layer and secondary shielding layer of the thin-film tank. However, the shielding layer is in the form of a corrugated plate, which makes the connection between the pump tower base and the corrugated plate relatively complicated. Considering the sealing and insulation requirements of the cryogenic thin-film tank, the sealing between the pump tower base and the corrugated plate is quite difficult, which greatly increases the fabrication difficulty of the cryogenic thin-film tank. Summary of the Invention

[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a membrane tank pump tower base device to solve the problem of the difficulty in sealing between the pump tower base and the corrugated plate in the existing cryogenic membrane tank.

[0006] To achieve the above objectives, the present invention provides a diaphragm tank pump tower base device, comprising:

[0007] The base body is cylindrical, and a first connecting part is provided on the outer periphery of the base body, and the first connecting part is connected to a first shielding layer.

[0008] The first connecting part is annular, the first shielding layer is made of two corrugated plates spliced ​​together, both corrugated plates are integrally formed, the end faces of the two corrugated plates form a circular through hole, and the two corrugated plates are directly connected to the first connecting part respectively.

[0009] As a further improvement of the present invention, the corrugated plate includes a plurality of first corrugations extending along a first direction and a plurality of second corrugations extending along a second direction. The first corrugations and the second corrugations intersect to form a knot, and at least one of the first corrugations or the second corrugations has a closed end facing the first connecting portion. The closed end is integrally formed with the corrugated plate, and there is a gap of one first corrugation or the second corrugation between the closed end and the first connecting portion.

[0010] As a further improvement of the present invention, the first corrugation and the second corrugation are arranged perpendicularly, and the first corrugation and the second corrugation near the first connecting portion form a rectangular structure, and the first connecting portion has no more than one closed end in the direction facing either side of the rectangular structure.

[0011] As a further improvement of the present invention, the closed end is positioned toward the center of the first connecting portion.

[0012] As a further improvement of the present invention, the radial width of the first connecting portion is 10~50mm.

[0013] As a further improvement of the present invention, a second connecting portion is provided at intervals below the first connecting portion, and the second connecting portion is connected to a second shielding layer.

[0014] The second connecting part is annular and is located in the frustum region of the base body; the second shielding layer is made of two corrugated plates spliced ​​together, both corrugated plates are integrally formed, and the end faces of the two corrugated plates form a circular through hole, and the two corrugated plates are directly connected to the second connecting part respectively.

[0015] As a further improvement of the present invention, the first connecting portion and the second connecting portion are integrally disposed.

[0016] As a further improvement of the present invention, a first plywood is provided between the first shielding layer and the second shielding layer, and the first plywood is in contact with the outer wall of the base body.

[0017] As a further improvement of the present invention, a support base is provided below the base body. The support base has a frustum structure and is an integral structure with the base body.

[0018] As a further improvement of the present invention, the end face of the support base that is in contact with the base body is closed;

[0019] The support base is hollow inside and filled with glass wool.

[0020] As a further improvement of the present invention, the circumferential sidewall of the support base is provided with a plurality of through holes.

[0021] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0022] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0023] (1) The membrane tank pump tower base device of the present invention uses two specially made corrugated plates, which have arc-shaped grooves that are adapted to the base body. The two specially structured corrugated plates are directly spliced ​​together and integrated with the base body, eliminating the problem that conventional corrugated plates are limited in cutting due to their corrugated structure and cannot be directly adapted to the base body. In addition, the corrugated plates in the present invention are integrally molded. The corrugated structure has been processed before being adapted to the base body, which directly eliminates the problem of conflict between the corrugations on the base body and the corrugated plates. This method allows the base body to be directly connected to the specially made corrugated plates, eliminating the problem that conventional pump tower bases need to be connected through connecting plates, avoiding the problem of poor connection between the connecting plates and corrugated plates, and simplifying the installation process of the pump tower base and improving the preparation efficiency of the membrane tank.

[0024] (2) The membrane tank pump tower base device of the present invention provides a closed end at the end of the first corrugation or the second corrugation away from the first connection part, that is, no knot is provided on the first corrugation and the second corrugation closest to the first connection part, so as to avoid the knot affecting the connection between the corrugated plate and the base body. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the membrane tank pump tower base device in an embodiment of the present invention;

[0026] Figure 2 This is a top view of the first plywood in an embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional structural diagram of the base body in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the surface structure of the second shielding layer in an embodiment of the present invention;

[0029] Figure 5 This is a top view of the second shielding layer in an embodiment of the present invention.

[0030] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0031] 1. Base body; 2. First connecting part; 3. Second connecting part; 4. First shielding layer; 5. Second shielding layer; 6. First corrugation; 7. Second corrugation; 8. Knot; 9. Closed end; 10. First plywood; 11. Support base. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0033] In the description of this invention, it should be understood that, unless otherwise stated, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0034] Furthermore, unless otherwise stated, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] Example:

[0038] Please see Figures 1-5 In a preferred embodiment of the present invention, the membrane tank pump tower base device includes a base body 1, which is cylindrical, and a first connecting portion 2 is provided on the outer periphery of the base body 1. The first connecting portion 2 is connected to a first shielding layer 4. More specifically, the first connecting portion 2 is annular, and the first shielding layer 4 is formed by splicing two corrugated plates. Both corrugated plates are integrally formed, and the contact end faces of the two corrugated plates form circular through holes. The two corrugated plates are directly connected to the first connecting portion 2 respectively.

[0039] In conventional membrane tank pump tower base assemblies, considering the incompatibility between the pump tower base and the corrugated plate, a transition structure is usually set between the pump tower base and the corrugated plate. Currently, a connecting plate is mainly set on the outer periphery of the pump tower base. The connecting plate is generally square, with a through hole in the middle. A welding plane is set on the outer edge of the pump tower base, and welding is performed between the welding plane and the connecting plate. The corrugated plate adopts a standard structural plate. The corrugated plate is cut off at the junction of the corrugated plate and the connecting plate, and then a sealing structure is formed at the junction of the corrugations on the connecting plate and the connecting plate to ensure good sealing performance at the junction of the corrugated plate and the connecting plate. While this method achieves a good connection between the pump tower base and the corrugated plate, the connecting plate is complex to design. It requires specific design considerations for the corrugated plate, and since the installation position of the pump tower base is uncertain, the actual cutting area of ​​the corrugated plate is difficult to determine, making pre-fabrication of the connecting plate impossible and hindering matching between the connecting plate and the corrugated plate. Secondly, when preparing the connecting plate on-site, its end face needs to be adapted to the corrugated structure on the corrugated plate. On-site prepared or shaped end caps cannot fully adapt to the corrugations, affecting the normal shrinkage of the corrugated plate during subsequent use of the membrane tank. Furthermore, the three-section structure of the pump tower base, connecting plate, and corrugated plate means at least two connections are required, adding extra fixing and welding processes and reducing the efficiency of membrane tank preparation.

[0040] To address the installation challenges of membrane tank pump tower bases, this invention designs a membrane tank pump tower base device. This device utilizes two specially designed corrugated plates with arc-shaped grooves that directly fit the base body 1. These two specially structured corrugated plates are directly joined together to form a single unit with the base body 1, eliminating the problem of conventional corrugated plates being limited in cutting due to their corrugated structure and unable to directly fit the base body 1. Furthermore, the corrugated plates in this invention are integrally molded, with their corrugated structure pre-treated before fitting to the base body 1, directly preventing conflicts between the base body 1 and the corrugations on the plates. This method allows for direct connection between the base body 1 and the specially designed corrugated plates, eliminating the need for a connecting plate transition connection required in conventional pump tower bases. This avoids problems with poor connection between the connecting plate and the corrugated plate, simplifies the pump tower base installation process, and improves the manufacturing efficiency of membrane tanks.

[0041] In this invention, the membrane tank pump tower base device refers to the pump tower base, the surrounding shielding layer connected to the pump tower base, and the entire lower structure of the pump tower base. Furthermore, the membrane tank pump tower base device of this invention can be applied to LNG carriers and onshore LNG storage tanks; the name "membrane tank pump tower base device" should not be construed as a limitation on the application scenarios of membrane tanks.

[0042] Further, as an optional embodiment of the present invention, the corrugated plate of the present invention includes a plurality of first corrugations 6 extending along a first direction and a plurality of second corrugations 7 extending along a second direction. A knot 8 is formed at the intersection of the first corrugations 6 and the second corrugations 7, and at least one of the first corrugations 6 or the second corrugations 7 has a closed end 9 at one end facing the first connecting portion 2. The closed end 9 is integrally formed with the corrugated plate, and there is only one first corrugation 6 or the second corrugation 7 between the closed end 9 and the first connecting portion 2. A conventional corrugated plate has first corrugations 6 and second corrugations 7 arranged perpendicularly to each other, and a knot 8 is formed at their intersection. The knot 8 is formed by stamping using a specific process, and it has circumferentially arranged protruding and recessed corrugations, so that it can adapt to the contraction and extension of the first corrugations 6 and the second corrugations 7. To avoid the excessively long extension area of ​​the knot 8, which could result in protrusions or depressions on the connecting end face between the corrugated plate and the base body 1, thus affecting the connection between the corrugated plate and the base body 1, the present invention provides a closed end 9 at the end of the first corrugation 6 or the second corrugation 7 that is away from the first connecting part 2. That is, the knot 8 is not provided on the first corrugation 6 and the second corrugation 7 closest to the first connecting part 2, so as to avoid the knot 8 affecting the connection between the corrugated plate and the base body 1.

[0043] Optionally, the closed end 9 in this invention is similar to the closed end structure on existing connecting plates. The closed end 9 is a quarter-spherical structure, which connects to the end of the first corrugation 6 or the second corrugation 7 to close the first corrugation 6 and the second corrugation 7. Furthermore, since the corrugated plate is integrally molded, there is no need to additionally seal the end of the first corrugation 6 or the second corrugation 7 during on-site installation, and there is no need to consider the connection problem between the closed end 9 and the first corrugation 6 and the second corrugation 7. This effectively avoids the problem of difficult connection between the connecting plate and the corrugated plate on the traditional pump tower base.

[0044] Furthermore, as an optional embodiment of the present invention, the first corrugation 6 and the second corrugation 7 are arranged perpendicularly, and the first corrugation 6 and the second corrugation 7 near the first connecting part 2 form a rectangular structure. The first connecting part 2 has no more than one closed end 9 in the direction facing either side of the rectangular structure. When a connecting plate is used to transition between the pump tower base and the corrugated plate, the connecting plate needs to have sufficient area for the end-sealing structure to extend, so that the corrugations slowly descend to be flush with the plane area of ​​the corrugated plate. Therefore, the actual size of the connecting plate is much larger than the cross-sectional size of the pump tower base. This also results in at least two end-sealing structures on each side of the connecting plate and the corrugations on the corrugated plate, which greatly increases the sealing difficulty between the connecting plate and the corrugated plate, and also greatly increases the sealing processing time between the connecting plate and the corrugated plate. The present invention adopts a direct connection method between the corrugated plate and the base body 1. The corrugated plate is sealed with the closed end 9 before it is connected to the base body 1. Therefore, the number of closed ends 9 corresponding to a single base body 1 is not limited, and the number of closed ends 9 will not affect the installation efficiency of the pump tower base. In this invention, the corrugated plate connected to the base body 1 is a specially made corrugated plate. In order to reduce the manufacturing time of the specially made corrugated plate and reduce the number of closed ends 9, it is possible that on the four sides of the corrugated plate, only one closed end 9 is provided in each direction facing the first connecting part 2.

[0045] Furthermore, as an optional embodiment of the present invention, the closed end 9 is oriented towards the center of the first connecting portion 2. Correspondingly, the first corrugation 6 or the second corrugation 7 connected to the closed end 9 is oriented towards the center of the first connecting portion 2. In the present invention, the corrugated plate connected to the base body 1 is a specially designed structure. When the dimensions of the base body 1 are known, a corrugated plate of a specific shape and structure can be set. Therefore, the installation position of the subsequent pump tower base can be marked by the position of the closed end 9, which facilitates the arrangement of the corrugated plate in the membrane tank.

[0046] Further, as an optional embodiment of the present invention, the radial width of the first connecting portion 2 is 10-50 mm. Although the base body 1 in the present invention can be directly connected to the corrugated plate, omitting the connecting plate structure, the connection between the base body 1 and the corrugated plate needs to be welded. To avoid damage to the strength of the base body 1 caused by welding between the base body 1 and the corrugated plate, the first connecting portion 2 and the second connecting portion 3 need to be provided on the base body 1. The first connecting portion 2 and the second connecting portion 3 are parts extending beyond the cylindrical structure, and welding between the corrugated plate and the first connecting portion 2 does not affect the strength of the base body 1. In addition, the radial width of the first connecting portion 2 in the present invention is only 10-50 mm, and its overall size is small, which will not significantly affect the processing difficulty of the base body 1. Moreover, the lateral extension is small, which will not cause significant bending of the first connecting portion 2 when the corrugated plate shrinks and floats, reducing the probability of damage to the first connecting portion 2 and improving the service life of the membrane tank pump tower base. Here, the radial width of the first connecting portion 2 refers to the length of the first connecting portion 2 extending in the horizontal direction.

[0047] Furthermore, such as Figure 4 , Figure 5 As shown in the optional embodiment of the present invention, a second connecting portion 3 is further provided below the first connecting portion 2 at intervals, and the second connecting portion 3 is connected to the second shielding layer 5. The second connecting portion 3 is also a ring structure, and is located in the frustum-shaped region of the base body 1. The second shielding layer 5 is also made of two corrugated plates spliced ​​together. Both corrugated plates are integrally formed, and circular through holes are formed on the joint end faces of the two corrugated plates. The two corrugated plates are directly connected to the second connecting portion 3 respectively. The pump tower base needs to connect the first shielding layer 4 and the second shielding layer 5 respectively. Therefore, a second connecting portion 3 similar to the first connecting portion 2 is provided on the base body 1 to connect the second shielding layer 5. The structures of the first shielding layer 4 and the second shielding layer 5 are similar, and will not be described in detail here. Furthermore, the second connecting part 3 is located in the frustum-shaped region of the base body 1. Compared to the cylindrical region, the frustum-shaped region has a larger radius, allowing the second connecting part 3 to be offset from the first connecting part 2 while maintaining a similar width. This facilitates welding the second connecting part 3 to the second shielding layer 5 and prevents interference between the first connecting part 2 and the second connecting part 3 during welding. Simultaneously, the frustum-shaped region prevents the second connecting part 3 from being made too wide for the sake of offset, as a wider second connecting part 3 would increase its sway when the second shielding layer 5 contracts, increasing the possibility of damage to the second connecting part 3.

[0048] Furthermore, as an optional embodiment of the present invention, the first connecting part 2 and the second connecting part 3 are integrally formed. Both the first connecting part 2 and the second connecting part 3 are annular structures disposed around the base body 1. Although they have reserved space for plywood along the vertical direction, they are relatively close in size and can be directly molded as a single unit, reducing the molding difficulty of the base body 1. Optionally, the first connecting part 2 and the second connecting part 3 are circular plate structures, and the lower part of the base body 1 is closed by the first connecting part 2 and the second connecting part 3.

[0049] Furthermore, such as Figure 2 As shown in the optional embodiment of the present invention, a first plywood 10 is further provided between the first shielding layer 4 and the second shielding layer 5, and the first plywood 10 is in contact with the outer wall of the base body 1. The first plywood 10 serves as a supporting structure for the first shielding layer 4 and the second shielding layer 5, filling the gap between them. It also absorbs the load generated by the two shielding layers, distributing it throughout the membrane tank to prevent stress concentration that could damage the first and second shielding layers 4 and 5. Simultaneously, the first plywood 10 also serves as the connecting base for the first and second shielding layers 4 and 5, connecting them to anchoring nails, anchoring strips, etc., on the corrugated plate to integrate the first shielding layer 4, the second shielding layer 5, and the lower structure. The lower structure here refers to the insulation structure below the second shielding layer 5, which is a known structure in the art and will not be described in detail here. It should be noted that since the base body 1 is a combination of a cylindrical and a frustum structure, the first plywood 10 needs to be adjusted at the joint end with the base body 1 so that the first plywood 10 can adapt to the conical surface of the base body 1 to achieve a protective effect.

[0050] Furthermore, such as Figure 3 As shown in the optional embodiment of the present invention, a support base 11 is also provided below the base body 1. The support base 11 has a frustum-shaped structure and is integral with the base body 1. In addition to being integrated with the first shielding layer 4 and the second shielding layer 5, the pump tower base also needs to connect with the lower foundation of the membrane tank to provide support. Therefore, a support base 11 is provided below the base body 1. The frustum-shaped support base 11 increases the contact area between the pump tower base and the lower structure, improving the stability of the pump tower base. Furthermore, the integral structure of the support base 11 and the base body 1 effectively improves the overall strength of the pump tower base, ensuring effective support for the pump tower base.

[0051] Furthermore, as an optional embodiment of the present invention, the end face where the support base 11 connects to the base body 1 is closed; the support base 11 is hollow inside and filled with glass wool. The upper part of the base body 1 is used for LNG input and output. The sealed end face where the support base 11 connects to the base body 1 prevents LNG leakage from the upper membrane tank. Simultaneously, the separation between the support base 11 and the base body 1 facilitates the filling of glass wool within the support base 11. The glass wool can fill the interior of the support base 11 completely and provides good thermal insulation. Additionally, the outer periphery of the support base 11 is also filled with glass wool. The outer periphery of the support base 11 has a frustum-shaped structure. When the insulation box is directly placed on the outer periphery of the support base 11, a gap will form at the connection point. Therefore, glass wool is filled on the outer periphery of the support base 11 to form a square structure, facilitating connection with the insulation box.

[0052] Furthermore, as an optional embodiment of the present invention, the support base 11 has multiple through holes on its circumferential sidewall. In the membrane tank system, in addition to considering the contraction and expansion of LNG, transportation safety also needs to be considered. Therefore, the insulation structure portion of the second shielding layer 5 facing away from the first shielding layer 4 has nitrogen gas flowing inside as a protective gas. The nitrogen gas forms a protective circulation around the outer periphery of the membrane tank. Multiple through holes are opened on the circumferential sidewall of the support base 11 so that the nitrogen gas can pass through the support base 11 normally, ensuring the normal flow of nitrogen gas around the second shielding layer 5.

[0053] Furthermore, as an optional embodiment of the present invention, the end of the support base 11 facing away from the base body 1 is closed, and the support base is connected to the bottom of the tank, so that the pump tower base is stably set.

[0054] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A membrane tank pump tower base device, characterized in that, include: The base body is cylindrical, and a first connecting part is provided on the outer periphery of the base body, and the first connecting part is connected to a first shielding layer. The first connecting part is annular, the first shielding layer is made of two corrugated plates spliced ​​together, both corrugated plates are integrally formed, the end faces of the two corrugated plates form a circular through hole, and the two corrugated plates are directly connected to the first connecting part respectively.

2. The membrane tank pump tower base device according to claim 1, characterized in that, The corrugated plate includes a plurality of first corrugations extending along a first direction and a plurality of second corrugations extending along a second direction. The first corrugations and the second corrugations intersect to form a knot, and at least one of the first corrugations or the second corrugations has a closed end facing the first connecting portion. The closed end is integrally formed with the corrugated plate, and there is a gap of one first corrugation or the second corrugation between the closed end and the first connecting portion.

3. The membrane tank pump tower base device according to claim 2, characterized in that, The first corrugation and the second corrugation are arranged perpendicularly, and the first corrugation and the second corrugation near the first connecting portion form a rectangular structure. The first connecting portion has no more than one closed end in any direction toward the rectangular structure.

4. The membrane tank pump tower base device according to claim 3, characterized in that, The closed end is oriented toward the center of the first connecting part.

5. The membrane tank pump tower base device according to claim 1, characterized in that, The first connecting part has a radial width of 10~50mm.

6. The membrane tank pump tower base device according to any one of claims 1 to 5, characterized in that, A second connecting portion is also provided at intervals below the first connecting portion, and the second connecting portion is connected to a second shielding layer; The second connecting part is annular and is located in the frustum region of the base body; the second shielding layer is made of two corrugated plates spliced ​​together, both corrugated plates are integrally formed, and the end faces of the two corrugated plates form a circular through hole, and the two corrugated plates are directly connected to the second connecting part respectively.

7. The membrane tank pump tower base device according to claim 6, characterized in that, The first connecting part and the second connecting part are integrally formed.

8. The membrane tank pump tower base device according to claim 6, characterized in that, A first plywood is provided between the first shielding layer and the second shielding layer, and the first plywood is connected to the outer wall of the base body.

9. The membrane tank pump tower base device according to any one of claims 1 to 5, characterized in that, A support base is also provided below the base body. The support base has a frustum structure and is an integral structure with the base body.

10. The membrane tank pump tower base device according to claim 9, characterized in that, The end face where the support base connects to the base body is closed; The support base is hollow inside and filled with glass wool.

11. The membrane tank pump tower base device according to claim 10, characterized in that, The circumferential sidewall of the support base has multiple through holes.

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