A corrugated through-type pump tower base and its installation method

Abstract

The present invention discloses a corrugated through-type pump tower base and an installation method thereof. The corrugated through-type pump tower base includes the connection between the bottom of the upper structure and the top of the lower structure; a groove is provided between the upper structure and the lower structure; the groove is circumferentially arranged at the bottom of the upper structure; the groove is used for enabling the corrugation of the shielding layer of the thin-film storage tank to directly pass through, and the corrugation is located between the groove and the top of the lower structure. The present invention can solve the problem of interference of the pump tower base with the continuity of the corrugation.

Description

Technical Field

[0001] The present invention relates to the field of thin-film storage tank equipment, and particularly to a corrugation-through pump tower base and an installation method thereof. Background Art

[0002] A cryogenic thin-film storage tank is a large-scale device for storing cryogenic media such as liquefied natural gas. Its structure includes components such as a concrete outer tank, an inner tank, and a pump tower. The pump tower base, as a key structure connecting the pump tower and the concrete foundation, directly affects the safety, stability, and transmission efficiency of liquefied natural gas transmission.

[0003] Currently, the pump tower bases in the prior art are mainly applicable to thin-film storage tanks with a bottom center-symmetric layout. This kind of base adopts an integral support structure and is huge in volume. When applied to a thin-film storage tank, it will seriously interfere with the continuity of the corrugated plate, resulting in corrugation fracture. Secondly, as a key shielding component of the storage tank, the continuity of the corrugated plate is crucial for the sealing effect and heat preservation performance. The fracture caused by the traditional base passing through the corrugated layer will form a cryogenic "thermal bridge", leading to leakage of cryogenic media, not only reducing the heat preservation efficiency, but also possibly causing cracking of the concrete foundation. In addition, the existing base structure is difficult to effectively integrate with the rectangular corrugation system, increasing the installation difficulty and cost.

[0004] Therefore, there is an urgent need to propose a corrugation-through pump tower base and an installation method thereof to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to propose a corrugation-through pump tower base and an installation method thereof, which can solve the problem of interference of the pump tower base with the corrugation continuity.

[0006] To solve the above technical problems, the present invention provides a corrugation-through pump tower base, including an upper structure and a lower structure; the bottom of the upper structure is connected to the top of the lower structure; a groove is provided between the upper structure and the lower structure; the groove is circumferentially arranged at the bottom of the upper structure; the groove is used for directly passing through the corrugation of the shielding layer of the thin-film storage tank, and the corrugation is located between the groove and the top of the lower structure.

[0007] Further, the upper structure includes a first hollow cylindrical structure; the lower structure includes a connecting edge and a second hollow cylindrical structure; the connecting edge is installed on the top of the second hollow cylindrical structure;

[0008] The top of the first hollow cylindrical structure is used for installing the pump tower, and the bottom is connected to the connecting edge; a plurality of the grooves are evenly arranged circumferentially at the bottom of the first hollow cylindrical structure; the corrugation of the shielding layer passes through the groove and is located between the groove and the connecting edge.

[0009] Further, an installation edge is formed between adjacent grooves; the connecting edge is provided with a connecting groove that is inserted into the installation edge.

[0010] Further, the installation edge is provided with a limiting groove communicating with the groove; the limiting groove is parallel to the connecting groove; the limiting groove and the connecting edge form a Z-direction locking mechanism for fixing the upper structure and the lower structure.

[0011] Further, the upper structure further includes a flange edge vertically connecting the bottom of the first hollow cylindrical structure; the flange edge is located between adjacent grooves; corresponding mounting holes are provided on the flange edge, the connecting edge, and the shielding layer.

[0012] Further, the shielding layer is provided with welding holes for connecting the upper structure and the lower structure; the welding holes are located in the overlapping area of the upper structure and the lower structure, and the positions of the welding holes avoid the shielding layer corrugations.

[0013] In addition, the present invention also provides an installation method for a corrugation-through pump tower base for installing the corrugation-through pump tower base as described above, which specifically includes the following:

[0014] Install the lower structure in the insulating layer; and

[0015] Install the shielding layer and the upper structure of the thin-film storage tank in sequence, and make the corrugations of the shielding layer correspond to and penetrate the grooves.

[0016] Further, after installing the upper structure, weld and fix the upper structure and the lower structure through the welding holes provided on the shielding layer.

[0017] Further, when installing the upper structure, first align the installation edge of the upper structure with the connecting edge of the lower structure, and then rotate the upper structure so that the limiting groove on the installation edge is snapped into and fixed to the connecting edge along the Z direction to form a Z-direction locking mechanism.

[0018] Further, after installing the upper structure, pass bolts through the mounting holes on the flange edge of the upper structure, the shielding layer, and the connecting edge of the lower structure in sequence, and tighten the nuts to form a detachable connection mechanism.

[0019] By the above technical solutions, the present invention has the following beneficial effects:

[0020] By separating the upper structure and the lower structure and setting a groove between the two structures, the corrugations of the shielding layer of the thin-film storage tank can directly penetrate through, which can solve the problem of interference of the traditional pump tower base with the continuity of the corrugations and effectively retain the integrity and sealing performance of the shielding layer. Secondly, the groove structure adopted in this application can actively adapt to the corrugation form, enabling the corrugations to penetrate naturally instead of being forced to change the path. This "corrugation-adaptive" design eliminates the stress interference between the corrugations and the support structure and fundamentally solves the problem of stress concentration in the contact area. At the same time, the setting of the groove enables the base to be perfectly integrated with the corrugated plate, avoiding the formation of "thermal bridges" and improving the sealing performance and heat preservation efficiency of the entire system.

[0021] In addition, through the setting of the Z-direction locking mechanism between the installation edge and the connection edge, the rapid and stable connection of the upper structure and the lower structure can be achieved, greatly simplifying the installation process. This detachable Z-direction locking connection method has significant installation convenience and maintenance advantages, supports the overhaul and replacement of the pump tower base without damaging the shielding layer structure. At the same time, this device provides two alternative connection methods of welding fixation and bolt connection, forming a triple safety guarantee, enhancing the adaptability and reliability of the installation method. The setting of the flange edge further enhances the structural strength, and the through-channel specially set for the corrugations of the shielding layer enables the normal operation of the corrugations in a low-temperature environment, preventing the temperature stress damage of the concrete foundation and extending the service life of the entire system.

[0022] In addition, the overall cylindrical structure setting of this device has excellent mechanical properties and structural stability, especially suitable for the pump tower support requirements of large storage tanks, and can maintain reliable support performance under extreme low-temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure after the installation of the corrugations of the corrugation-penetrating pump tower base and the shielding layer in an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the shielding layer in an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall structure of the upper structure and the lower structure of the corrugation-penetrating pump tower base in a Z-direction locking manner in an embodiment of the present invention;

[0026] Figure 4 It is an exploded view of the upper structure and the lower structure of the corrugation-penetrating pump tower base in a Z-direction locking manner in an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the overall structure of the upper structure and the lower structure of the corrugation-penetrating pump tower base in a detachable connection manner in an embodiment of the present invention;

[0028] Figure 6 This is a flowchart of the installation method of the corrugated through-type pump tower base in an embodiment of the present invention.

[0029] In the figure, 11 is the upper structure; 12 is the groove; 13 is the installation edge; 14 is the limiting groove; 15 is the flange edge; 21 is the lower structure; 22 is the connecting edge; 23 is the connecting groove; 5 is the shielding layer; 51 is the corrugation; 52 is the perforation. Specific embodiments

[0030] The following will describe in more detail a corrugated through-type pump tower base and its installation method of the present invention with reference to the accompanying drawings, in which the preferred embodiments of the present invention are shown. It should be understood that those skilled in the art can modify the present invention described herein while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as a broad guidance for those skilled in the art and not as a limitation to the present invention.

[0031] In the following paragraphs, the present invention will be described more specifically by way of example with reference to the accompanying drawings. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings are all in very simplified forms and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0032] As Figures 1 - 3 shown, an embodiment of the present invention provides a corrugated through-type pump tower base, including an upper structure 11 and a lower structure 21.

[0033] Specifically, the bottom of the upper structure 11 is connected to the top of the lower structure 21; a groove 12 is provided between the upper structure 11 and the lower structure 21; the groove 12 is arranged circumferentially at the bottom of the upper structure 11; the groove 12 is used for the corrugation 51 of the shielding layer 5 of the thin-film storage tank to directly penetrate through, and the corrugation 51 is located between the groove 12 and the top of the lower structure 21. Through this structural arrangement, the pump tower base can adapt to and accommodate the corrugation 51 of the shielding layer 5 of the thin-film storage tank, effectively improving the integrity and sealing performance of the shielding layer 5 and reducing the risk of low-temperature leakage and heat conduction.

[0034] In a thin-film storage tank, the corrugation 51 is usually used to adapt to thermal expansion and contraction in a low-temperature environment, and the size of the groove 12 in this embodiment matches the height and spacing of the corrugation 51, enabling the corrugation 51 to penetrate smoothly without being squeezed or deformed.

[0035] In one embodiment, the upper structure 11 includes a first hollow cylindrical structure; the lower structure 21 includes a connecting edge 22 and a second hollow cylindrical structure; the connecting edge 22 is installed on the top of the second hollow cylindrical structure; the top of the first hollow cylindrical structure is used to install a pump tower, and the bottom is connected to the connecting edge 22; a plurality of the grooves 12 are circumferentially and evenly arranged at the bottom of the first hollow cylindrical structure; the corrugations 51 of the shielding layer 5 pass through the grooves 12 and are located between the grooves 12 and the connecting edge 22. Those skilled in the art will know that the dimensions of the hollow cylindrical structure can be set according to actual needs, and there are also other shape embodiments in addition to this embodiment, such as a square or polygonal column structure, etc.

[0036] In a specific example, since the corrugations 51 of the shielding layer 5 of the thin-film storage tank are usually arranged in an orthogonal cross pattern, forming a grid-like structure. This arrangement enables the corrugations 51 to absorb the stress caused by thermal expansion and contraction in two main directions, namely the horizontal and vertical directions. Based on this characteristic of the corrugation 51 arrangement, in this embodiment, 4 grooves 12 can be provided circumferentially at the bottom of the upper structure 11, and the 4 grooves 12 are respectively located above the corrugations 51 except for the intersection points of two corrugations 51. It can perfectly adapt to the orthogonal arrangement of the corrugations 51, enabling the corrugations 51 in each direction to pass through smoothly, and at the same time making the structure have symmetry and uniform stress.

[0037] In one embodiment, in combination Figure 3 and Figure 4 as shown, an installation edge 13 is formed between adjacent grooves 12; the connecting edge 22 is provided with a connecting groove 23 that is inserted into the installation edge 13; the shielding layer 5 is provided with a through hole 52 for the installation edge 13 to pass through. This setting enhances the connection stability between the upper structure 11 and the lower structure 21, and improves the seismic performance and anti-deformation ability of the overall structure.

[0038] In this embodiment, the installation edge 13 between adjacent grooves 12 and the grooves 12 are in the same circumferential position, forming 4 equally divided installation areas. The outer contour of the installation edge 13 precisely matches the inner contour of the connecting groove 23 to facilitate adjustment and positioning during the installation process. The diameter of the through hole 52 (the position of the through hole 52 can be the same as the position of the welding hole) on the shielding layer 5 is slightly larger than the outer diameter of the installation edge 13 to avoid squeezing or stretching the shielding layer 5 during the installation process.

[0039] In a specific example, the contact surface of the installation edge 13 and the connecting groove 23 can be specially treated, such as sandblasting or coating with a material with a high coefficient of friction, to increase the friction and stability of the connection. At the same time, a reinforcing ring can be added to the edge of the through hole 52 to prevent tearing or deformation around the through hole 52 under low-temperature working conditions. The material of the reinforcing ring is the same as that of the shielding layer 5 and is connected to the shielding layer 5 by welding.

[0040] In this embodiment, a limiting groove 14 communicating with the groove 12 is provided on the mounting edge 13. Specifically, the limiting groove 14 is parallel to the connecting groove 23; the limiting groove 14 and the connecting edge 22 form a Z-direction locking mechanism for fixing the upper structure 11 and the lower structure 21. By providing the Z-direction locking mechanism, the connection firmness of the base structure is increased, while the installation process is simplified, and the installation time and labor cost are reduced.

[0041] Among them, the slot width of the limiting groove 14 can be determined according to the thickness of the connecting edge 22, so that the limiting groove 14 can better clamp the connecting edge 22.

[0042] In another embodiment, as Figure 1 、 Figure 2 and Figure 5 shown, the upper structure 11 further includes a flange edge 15 vertically connected to the bottom of the first hollow cylindrical structure. Specifically, the flange edge 15 is located between adjacent grooves 12; mounting holes corresponding to each other are provided on the flange edge 15, the connecting edge 22, and the shielding layer 5 (the positions of the mounting holes and the welding holes can be the same). The setting of the flange edge 15 further enhances the connection strength between the upper structure 11 and the lower structure 21, and improves the stability and impact resistance of the overall structure.

[0043] Among them, the flange edge 15 is made of the same material as the first hollow cylindrical structure, and the connection between the periphery and the first hollow cylindrical structure adopts a fillet transition to reduce stress concentration. The mounting holes are evenly distributed on the flange edge 15 and are precisely corresponding to the mounting holes on the connecting edge 22 and the shielding layer 5, and the position error is controlled within a small range.

[0044] In another embodiment, the shielding layer 5 is provided with welding holes for connecting the upper structure 11 and the lower structure 21; the welding holes are located in the overlapping area of the upper structure 11 and the lower structure 21, and the positions of the welding holes avoid the corrugations 51 of the shielding layer 5, so that the welding operation will not affect the integrity and normal function of the corrugations 51 of the shielding layer 5, and the integrity and sealing performance of the structure are enhanced.

[0045] Among them, the welding holes are evenly distributed in the overlapping area of the upper structure 11 and the lower structure 21. The center position of the welding holes should maintain a sufficient safety distance from the peaks and valleys of the corrugations 51 to avoid the overlap of the welding heat affected zone and the corrugations 51, resulting in the deformation of the corrugations 51 or the degradation of the material performance. The welding adopts a through-type setting, that is, the weld penetrates the shielding layer 5 to directly connect the upper structure 11 and the lower structure 21 to form a firm overall structure.

[0046] In addition, as Figure 6As shown in the figure, this embodiment also proposes an installation method for a corrugated through - type pump tower base for installing the corrugated through - type pump tower base as described above, which specifically includes the following steps:

[0047] S1. Install the lower structure 21 in the insulation layer; and

[0048] S2. Install the shielding layer 5 and the upper structure 11 of the thin - film storage tank in sequence, and make the corrugations 51 of the shielding layer 5 correspond to and penetrate the grooves 12.

[0049] In one embodiment, after installing the upper structure 11, weld and fix the upper structure 11 and the lower structure 21 through the welding holes provided on the shielding layer 5.

[0050] In another embodiment, when installing the upper structure 11, first align the installation edge 13 of the upper structure 11 with the connection edge 22 of the lower structure 21, and then rotate the upper structure 11 so that the limit groove 14 on the installation edge 13 is snapped into and fixed to the connection edge 22 along the Z - direction to form a Z - direction locking mechanism.

[0051] In another embodiment, after installing the upper structure 11, pass bolts through the flange edge 15 of the upper structure 11, the shielding layer 5, and the installation holes on the connection edge 22 of the lower structure 21 in sequence, and tighten the nuts to form a detachable connection mechanism.

[0052] In this embodiment, first reserve a suitable position in the insulation layer at the bottom of the storage tank and install the lower structure 21. For example, fill materials such as foamed polyurethane in the gap between the lower structure 21 and the insulation layer. After it cures, form an integral structure so that the lower structure 21 is firmly fixed in the insulation layer. Then lay the shielding layer 5 and mark the positions of the perforations 52, installation holes or welding holes to be opened on the shielding layer 5. Finally, install the upper structure 11. Since the corrugations 51 of the shielding layer 5 of the thin - film storage tank are arranged in an orthogonal cross - pattern to form a grid - like structure, it is necessary to align the main corrugations 51 in the horizontal and vertical directions with 4 grooves 12 respectively. Regarding the installation of the upper structure 11, one of the following three installation methods can be selected:

[0053] First, align the mounting edge 13 of the upper structure 11 with the connecting groove 23 of the lower structure 21, and insert the mounting edge 13 completely into the connecting groove 23. Then rotate the upper structure 11 clockwise so that the limiting groove 14 on the mounting edge 13 catches the connecting edge 22. Second, before installing the lower structure 21, embed nuts or set threaded holes at the positions of the mounting holes on the connecting edge 22. When installing the upper structure 11, pass bolts downward through the shielding layer 5 and the mounting holes of the connecting edge 22 from the flange edge 15 of the upper structure 11, and screw them into the embedded nuts or threaded holes for fastening. Third, weld and fix the upper structure 11 and the lower structure 21 through the preset welding holes on the shielding layer 5.

[0054] In summary, a corrugated through-type pump tower base and its installation method proposed by the present invention have the following advantages:

[0055] By separating the upper structure and the lower structure and setting a groove between the two structures so that the corrugations of the shielding layer of the thin-film storage tank can directly penetrate through, the problem of interference with the continuity of the corrugations by the traditional pump tower base can be solved, and the integrity and sealing performance of the shielding layer can be effectively retained. Secondly, the groove structure adopted in this application can actively adapt to the corrugation form, enabling the corrugations to penetrate naturally rather than being forced to change the path. This "corrugation-adaptive" design eliminates the stress interference between the corrugations and the support structure, fundamentally solving the problem of stress concentration in the contact area. At the same time, the setting of the groove enables the base to be perfectly integrated with the corrugated plate, avoiding the formation of a "thermal bridge" and improving the sealing performance and heat preservation efficiency of the entire system.

[0056] In addition, through the setting of the Z-direction locking mechanism between the mounting edge and the connecting edge, the rapid and stable connection of the upper structure and the lower structure can be achieved, greatly simplifying the installation process. This detachable Z-direction locking connection method has significant installation convenience and maintenance advantages, supports the inspection and replacement of the pump tower base, and does not require damage to the shielding layer structure. At the same time, the present device provides two alternative connection methods of welding fixation and bolt connection, forming a triple safety guarantee, enhancing the adaptability and reliability of the installation method. The setting of the flange edge further enhances the structural strength, and the through-channel specially set for the corrugations of the shielding layer enables the normal operation of the corrugations in a low-temperature environment, preventing temperature stress damage to the concrete foundation and extending the service life of the entire system.

[0057] In addition, the overall cylindrical structure setting of the present device has excellent mechanical properties and structural stability, and is particularly suitable for the pump tower support requirements of large storage tanks, and can maintain reliable support performance under extremely low-temperature conditions.

[0058] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A corrugated through-type pump tower base, characterized in that, It includes an upper structure and a lower structure; the bottom of the upper structure is connected to the top of the lower structure; there is a groove between the upper structure and the lower structure; the groove is arranged circumferentially at the bottom of the upper structure; the groove is used to allow the corrugations of the shielding layer of the thin-film storage tank to pass through directly, and the corrugations are located between the groove and the top of the lower structure. The upper structure includes a first hollow cylindrical structure; the lower structure includes a connecting edge and a second hollow cylindrical structure; the connecting edge is installed on the top of the second hollow cylindrical structure. The top of the first hollow cylindrical structure is used to install a pump tower, and the bottom is connected to the connecting edge; a plurality of the grooves are evenly arranged circumferentially at the bottom of the first hollow cylindrical structure; the corrugations of the shielding layer pass through the grooves and are located between the grooves and the connecting edge. An installation edge is formed between adjacent grooves; the connecting edge is provided with a connecting groove that is inserted into the installation edge. The installation edge is provided with a limiting groove that communicates with the groove; the limiting groove is parallel to the connecting groove; the limiting groove and the connecting edge form a Z-direction locking mechanism for fixing the upper structure and the lower structure.

2. A method for installing a corrugated through-type pump tower base, which is used to install the corrugated through-type pump tower base as described in Claim 1, characterized in that, Specifically, it includes the following: Install the lower structure in the insulating layer; and Install the shielding layer and the upper structure of the thin-film storage tank in sequence, and make the corrugations of the shielding layer correspond to and pass through the grooves.

3. The installation method of the corrugated through-type pump tower base according to claim 2, characterized in that, When installing the upper structure, first align and insert the installation edge of the upper structure into the connecting groove of the connecting edge of the lower structure, and then rotate the upper structure so that the limiting groove on the installation edge is clamped and fixed to the connecting edge, forming a Z-direction locking mechanism.

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