LNG ship pump tower pump pipe fixing and clamping combined device and operation method thereof

Abstract

The invention relates to an LNG ship pump tower pump pipe fixing, clamping and combining device, a pump pipe comprises a plurality of U-shaped parts and linear parts connected with the two ends of each U-shaped part respectively, and the fixing, clamping and combining device comprises a first fixing and clamping device arranged at the U-shaped parts of the pump pipe, a second fixing and clamping device arranged at the U-shaped parts of the pump pipe and a third fixing and clamping device arranged at the U-shaped parts of the pump pipe, and the two second fixed clamping devices are respectively arranged at straight line parts which are respectively connected with the two ends of the U-shaped part of the pump pipe. The invention further provides an operation method of the fixing and clamping combined device, the planeness and straightness of the pump pipe can be effectively controlled, installation is easy, and cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of advanced ship manufacturing, and in particular to a pump pipe fixing and clamping assembly device for an LNG ship pump tower and an operating method thereof. Background Art

[0002] The pump tower is an important functional component in the cargo hold area of ​​LNG ships. It is suspended vertically in each cargo hold and is responsible for loading and unloading liquefied natural gas. The pump pipe (injection pipe) is an important component of the pump tower. The material used is mainly low-temperature stainless steel (working temperature is -163℃). This type of material has a large linear expansion coefficient and is very easy to deform and shrink after welding. In addition, its structure is composed of multiple U-shaped parts and straight parts. The total length is 32 meters and the straightness tolerance is required to be controlled at ±5mm, which requires extremely high manufacturing precision.

[0003] In the current existing technology, several roller racks are generally used to lift the injection pipe, and then the height straightness and size are adjusted in this state for assembly and welding. The problems of the above lifting method are: the injection pipe is on the roller rack, there is no reference position during installation, and the straightness cannot be guaranteed; both the injection pipe and the roller rack have no restraining force and cannot be fixed, and the size and deformation cannot be controlled during installation and welding; there is no reference for inspection and acceptance, and the acceptance is complicated and difficult. Therefore, it is very necessary to design a fixing clamping device to overcome the above defects.

[0004] It should be understood that the above statements merely provide background technology related to the present invention and do not necessarily constitute prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a pump pipe fixing and clamping assembly device for an LNG ship pump tower and an operation method thereof, so as to effectively control the flatness and straightness problems of the pump pipe during welding.

[0006] In order to achieve the above-mentioned object, the present invention provides a LNG ship pump tower pump pipe fixing and clamping assembly device, wherein the pump pipe comprises a plurality of U-shaped portions and straight portions respectively connected to both ends of each of the U-shaped portions.

[0007] Wherein, the fixing and clamping assembly device comprises: a first fixing and clamping device, which is arranged at the U-shaped portion of the pump tube; and two second fixing and clamping devices, which are respectively arranged at the straight portions connected to the two ends of the U-shaped portion of the pump tube.

[0008] The first fixing and clamping device comprises: a first base plate, which is fixedly connected to the ground by fasteners; a first column, the lower end of which is welded to the first base plate; two first clamping devices, which are respectively welded to both sides of the upper end of the first column to limit and fix the U-shaped portion of the pump tube;

[0009] Among them, each of the second fixing clamping devices includes: a second base plate, which is fixedly connected to the ground by fasteners; a second column, whose lower end is welded to the second base plate; and a second clamping device, welded to one side of the upper end of the second column to limit and fix the straight portion of the pump pipe.

[0010] Preferably, the first clamping device includes: a first adjustment plate, which is movably connected to the upper end of the first column to adjust the horizontal fixing height of the first fixed clamping device; a first fixed baffle, which is vertically arranged, has a waist-shaped hole on the upper end, and is welded to one side of the first adjustment plate at the lower end; a first movable baffle, which is vertically arranged, has waist-shaped holes on both the upper and lower ends, and its lower end is connected to the first adjustment plate through fasteners passing through the waist-shaped holes, and is parallel to the first fixed baffle with a certain distance between them; a first movable pressure plate, which has waist-shaped holes on both ends, one end of which is connected to the upper end of the first fixed baffle through the waist-shaped hole through a fastener, and the other end of which is connected to the upper end of the first movable baffle through the waist-shaped hole through a fastener.

[0011] Preferably, the first adjustment plate, the first fixed baffle, the first movable baffle and the first movable pressure plate together form a first accommodating space; wherein, after the pump tube is inserted into the first accommodating space, the straightness of the pump tube is ensured by the first fixed baffle, and the pump tube is limited by adjusting the fasteners to tighten the different positions of the waist-shaped hole, so as to fix the pump tube.

[0012] Preferably, the waist-shaped hole is a "cross-shaped" waist-shaped hole, which is contacted and limited with the pump tube in four directions of up, down, left and right by adjusting the movement of the first fixed baffle, the first movable baffle and the first movable pressure plate in the horizontal and vertical directions.

[0013] Preferably, the first fixing clamping device also includes a horizontal crossbeam, which is vertically fixedly connected to the first adjustment plate in each of the first clamping devices, and the top of the horizontal crossbeam contacts the bottom of the pipes on both sides of the U-shaped portion of the pump tube to support the pump tube.

[0014] Preferably, fixed limit members and movable limit members are respectively provided at both ends of the horizontal cross beam; wherein each of the fixed limit members is vertically fixed on the horizontal cross beam, and is arranged close to one side wall of the pipes on both sides of the U-shaped portion of the pump pipe; each of the movable limit members is movably connected to the horizontal cross beam through a movable connecting member to clamp the other side wall of the pipes on both sides of the U-shaped portion of the pump pipe, thereby limiting and fixing the pipes on both sides of the U-shaped portion of the pump pipe.

[0015] Preferably, the second clamping device includes: a second adjustment plate, which is movably connected to the upper end of the second column to adjust the horizontal fixing height of the second fixed clamping device; a second fixed baffle, which is vertically arranged, has a waist-shaped hole on the upper end, and is welded to one side of the second adjustment plate at the lower end; a second movable baffle, which is vertically arranged, has waist-shaped holes on both the upper and lower ends, and its lower end is connected to the second adjustment plate through fasteners passing through the waist-shaped holes, and is parallel to the second fixed baffle with a certain distance between them; a second movable pressure plate, which has waist-shaped holes on both ends, one end of which is connected to the upper end of the second fixed baffle through the waist-shaped hole through a fastener, and the other end of which is connected to the upper end of the second movable baffle through the waist-shaped hole through a fastener.

[0016] Preferably, the second adjustment plate, the second fixed baffle, the second movable baffle and the second movable pressure plate together form a second accommodating space; wherein, after the pump tube is inserted into the second accommodating space, the straightness of the pump tube is ensured by the second fixed baffle, and the pump tube is limited by adjusting the fasteners to tighten the different positions of the waist-shaped hole, so as to fix the pump tube.

[0017] Preferably, the waist-shaped hole is a "cross-shaped" waist-shaped hole, which is contacted and limited with the pump tube in four directions of up, down, left and right by adjusting the movement of the second fixed baffle, the second movable baffle and the second movable pressure plate in the horizontal and vertical directions.

[0018] The present invention also provides an operation method of a pump pipe fixing and clamping assembly device for an LNG ship pump tower, which is implemented by using the above-mentioned pump pipe fixing and clamping assembly device for an LNG ship pump tower, and specifically comprises the following steps: S1, installing a first fixing and clamping device at each U-shaped portion of the pump pipe; S2, installing a second fixing and clamping device at each straight portion connected to the end of the U-shaped portion; S3, adjusting the height of each first adjustment plate and the second adjustment plate so that each U-shaped portion and each straight portion are at the same horizontal plane height; S4, ensuring the straightness of the pump pipe at each U-shaped portion through each first fixed baffle; and by adjusting each first movable baffle and The first movable pressure plate limits and fixes each U-shaped portion in each first accommodating space; S5, supports the pipelines on both sides of each U-shaped portion of the pump pipe through each horizontal crossbeam; ensures the straightness of the pipelines on both sides of each U-shaped portion of the pump pipe through each fixed limiting member; and limits and fixes the pipelines on both sides of each U-shaped portion by adjusting each movable limiting member; S6, ensures the straightness of the pump pipe at each straight portion through each second fixed baffle; and limits and fixes each straight portion in each second accommodating space by adjusting each second movable baffle and second movable pressure plate; S7, completes the clamping and fixation of the pump pipe, and performs subsequent welding operations.

[0019] To sum up, compared with the prior art, the present invention provides an LNG ship pump tower pump pipe fixing and clamping combination device and its operation method, which can effectively control the flatness and straightness problems of the pump pipe, and is simple to install, low cost, and improves the fixing efficiency while reducing labor, and has high reliability and stability. At the same time, the device is a reuse device and can be applied to the manufacture of other linear pump pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the arrangement of the fixing and clamping assembly device in the present invention;

[0021] Figure 2 It is a front view of the first fixing and clamping device in the present invention;

[0022] Figure 3 It is a side view of the first fixing and clamping device in the present invention;

[0023] Figure 4 is a three-dimensional diagram of the first fixing and clamping device in the present invention;

[0024] Figure 5 It is a front view of the second fixing clamping device in the present invention;

[0025] Figure 6 It is a side view of the second fixing and clamping device in the present invention;

[0026] Figure 7 This is a schematic diagram of the fixing and clamping assembly device of the present invention fixing the entire pump tube. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 ~Attached Figure 3 , the present invention is further explained by describing a preferred specific embodiment in detail.

[0028] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the embodiments of the present invention, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention.

[0029] It should be noted that, in the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only the elements explicitly listed, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] like Figure 1 and Figure 7 As shown, the pump pipe 9 includes a plurality of U-shaped portions 91 and straight portions 92 respectively connected to the two ends of each of the U-shaped portions 91. The present invention provides a pump pipe fixing and clamping assembly device for an LNG ship pump tower to fix the pump pipe 9. The fixing and clamping assembly device includes: a first fixing and clamping device 1, which is arranged at the U-shaped portion 91 of the pump pipe 9; and two second fixing and clamping devices 2, which are respectively arranged at the straight portions 92 connected to the ends of the U-shaped portion 91 of the pump pipe 9.

[0031] It is understandable that each pump tube 9 requires several sets of fixing and clamping assembly devices, and each set of the fixing and clamping assembly devices includes a first fixing and clamping device 1 and two second fixing and clamping devices 2 .

[0032] like Figure 2 to Figure 4 As shown, the first fixing clamping device 1 includes: a first base plate 11, which is fixedly connected to the ground by fasteners; a first column 12, whose lower end is welded to the first base plate 11; and two first clamping devices 13, which are respectively welded to both sides of the upper end of the first column 12 to limit and fix the U-shaped portion 91 of the pump tube 9.

[0033] Furthermore, the first clamping device 13 includes: a first adjusting plate 131, which is movably connected to the upper end of the first column 12 to adjust the horizontal fixing height of the first fixed clamping device 1; a first fixed baffle 132, which is vertically arranged, has a waist-shaped hole at the upper end, and is welded to one side of the first adjusting plate 131 at the lower end; a first movable baffle 133, which is vertically arranged, has waist-shaped holes at the upper and lower ends, and its lower end is connected to the first adjusting plate 131 through fasteners passing through the waist-shaped holes, and is parallel to the first fixed baffle 132, with a certain distance between them; a first movable pressing plate 134, which has waist-shaped holes at both ends, one end of which is connected to the upper end of the first fixed baffle 132 through a fastener passing through the waist-shaped hole, and the other end of which is connected to the upper end of the first movable baffle 133 through a fastener passing through the waist-shaped hole.

[0034] It can be understood that the first adjustment plate 131, the first fixed baffle 132, the first movable baffle 133 and the first movable pressure plate 134 together form a first accommodating space 15. After the pump tube 9 is inserted into the first accommodating space 15, the straightness of the pump tube 9 is ensured by the first fixed baffle 132, and the pump tube 9 is limited by adjusting the fasteners to tighten the different positions of the waist-shaped hole, so as to fix the pump tube 9.

[0035] It can be understood that in the embodiment of the present invention, some of the above-mentioned waist-shaped holes are arranged horizontally and some are arranged vertically. By adopting a fixing method that matches the fasteners and the waist-shaped holes, the movement of the fasteners in the up and down and left and right directions can be realized, and then the movement of the first fixed baffle 132, the first movable baffle 133 and the first movable pressure plate 134 in the horizontal and vertical directions can be adjusted within a certain range, so as to contact and limit the pump pipe 9 in the four directions of up, down, left and right, so as to clamp and fix the pump pipes 9 of different specifications and sizes, and at the same time prevent welding deformation.

[0036] In a preferred embodiment of the present invention, each waist-shaped hole in the first clamping device 13 can be a "cross-shaped" waist-shaped hole.

[0037] Furthermore, the first fixing clamping device 1 also includes a horizontal crossbeam 6, which is vertically fixedly connected to the first adjustment plate 131 in each of the first clamping devices 13, and the top of the horizontal crossbeam 6 is in contact with the bottom of the pipes on both sides of the U-shaped portion 91 of the pump tube 9 to support the pump tube 9.

[0038] Furthermore, fixed limit members 61 and movable limit members 62 are respectively provided at both ends of the horizontal cross beam 6; each of the fixed limit members 61 is vertically fixed on the horizontal cross beam 6, and is arranged close to one side wall of the pipes on both sides of the U-shaped portion 91 of the pump pipe 9; each of the movable limit members 62 is movably connected to the horizontal cross beam 6 through a movable connecting member to clamp the other side wall of the pipes on both sides of the U-shaped portion 91 of the pump pipe 9, thereby realizing the limiting and fixing of the pipes on both sides of the U-shaped portion 91 of the pump pipe 9.

[0039] like Figure 5 and Figure 6 As shown, the second fixing clamping device 2 includes: a second base plate 21, which is fixedly connected to the ground by fasteners; a second column 22, whose lower end is welded to the second base plate 21; and a second clamping device 23, which is welded to one side of the upper end of the second column 22 to limit and fix the straight portion 92 of the pump pipe 9.

[0040] Furthermore, the second clamping device 23 includes: a second adjusting plate 231, which is movably connected to the upper end of the second column 22 to adjust the horizontal fixing height of the second fixed clamping device 2; a second fixed baffle 232, which is vertically arranged, has a waist-shaped hole on the upper end, and is welded to one side of the second adjusting plate 231 at the lower end; a second movable baffle 233, which is vertically arranged, has waist-shaped holes on both the upper and lower ends, and its lower end is connected to the second adjusting plate 231 through fasteners passing through the waist-shaped holes, and it is parallel to the second fixed baffle 232, and there is a certain distance between the two; a second movable pressing plate 234, which has waist-shaped holes on both ends, one end of which is connected to the upper end of the second fixed baffle 232 through a fastener passing through the waist-shaped hole, and the other end of which is connected to the upper end of the second movable baffle 233 through a fastener passing through the waist-shaped hole.

[0041] It can be understood that the second adjustment plate 231, the second fixed baffle 232, the second movable baffle 233 and the second movable pressure plate 234 together form a second accommodating space 25. After the pump tube 9 is inserted into the second accommodating space 25, the straightness of the pump tube 9 is ensured by the second fixed baffle 232, and the pump tube 9 is limited by adjusting the fasteners to tighten the different positions of the waist-shaped hole, so as to fix the pump tube 9.

[0042] It can be understood that, in the embodiment of the present invention, the setting of each waist-shaped hole in the second clamping device 23 is based on the same principle as the setting of each waist-shaped hole in the first clamping device 13, and is also partially horizontally set and partially vertically set, so as to achieve adjustment of the horizontal and vertical movement of the second fixed baffle 232, the second movable baffle 233 and the second movable pressure plate 234 within a certain range, so as to clamp and fix pump tubes 9 of different specifications and sizes.

[0043] In a preferred embodiment of the present invention, each waist-shaped hole in the second clamping device 23 can be a "cross-shaped" waist-shaped hole.

[0044] It is understandable that both the first fixing clamping device 1 and the second fixing clamping device 2 are made of stainless steel to achieve wear resistance and corrosion resistance and extend the service life.

[0045] Further, such as Figure 7 As shown, the head end 93 and the tail end 94 of the pump tube 9 are respectively connected to the tube body, and the pump tube 9 includes a plurality of U-shaped portions 91 and a plurality of straight portions 92. A first fixing clamping device 1 is provided at each of the U-shaped portions 91, and a second fixing clamping device 2 is provided at each straight portion 92 connected to the end of the U-shaped portion 91, until the entire pump tube 9 is clamped and fixed, and then the subsequent welding operation is carried out.

[0046] The present invention also provides an operation method of a pump pipe fixing and clamping assembly device for an LNG ship pump tower, which is implemented by using the above-mentioned fixing and clamping assembly device, and specifically comprises the following steps:

[0047] S1, installing a first fixing clamping device 1 at each U-shaped portion 91 of the pump tube 9;

[0048] S2, installing a second fixing clamping device 2 at each straight portion 92 connected to the end of the U-shaped portion 91;

[0049] S3, by adjusting the height of each first adjustment plate 131 and the second adjustment plate 231, so that each U-shaped portion 91 and each straight portion 92 are at the same horizontal plane height;

[0050] S4, ensuring the straightness of the pump tube 9 at each U-shaped portion 91 by each of the first fixed baffles 132; and fixing each of the U-shaped portions 91 in each of the first accommodating spaces 15 by adjusting each of the first movable baffles 133 and the first movable pressure plate 134;

[0051] S5, supporting the pipelines on both sides of each U-shaped portion 91 of the pump pipe 9 through each horizontal crossbeam 6; ensuring the straightness of the pipelines on both sides of each U-shaped portion 91 of the pump pipe 9 through each fixed stopper 61; and limiting and fixing the pipelines on both sides of each U-shaped portion 91 by adjusting each movable stopper 62;

[0052] S6. Ensure the straightness of the pump tube 9 at each straight portion 92 by each second fixed baffle 232; and limit and fix each straight portion 92 in each second accommodating space 25 by adjusting each second movable baffle 233 and second movable pressure plate 234;

[0053] S7, completing the clamping and fixing of the pump tube 9, and performing subsequent welding operations.

[0054] Among them, in the above S3, the height adjustment of the first adjustment plate 131 and the second adjustment plate 231 can also be achieved by setting vertical waist-shaped holes, and connecting them to the first column 12 or the second column 22 respectively through fasteners, so that the height of the first adjustment plate 131 and the second adjustment plate 231 can be adjusted.

[0055] In summary, the present invention provides an LNG ship pump tower pump pipe fixing and clamping combination device and its operation method, which can effectively control the flatness and straightness problems of the pump pipe, and is simple to install, low cost, and improves the fixing efficiency while reducing labor, and has high reliability and stability. At the same time, the device is a reuse device and can be applied to the manufacture of other linear pump pipes.

[0056] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A pump pipe fixing and clamping assembly device for an LNG ship pump tower, wherein the pump pipe comprises a plurality of U-shaped portions and straight portions respectively connected to both ends of each of the U-shaped portions, characterized in that: The fixing and clamping assembly device comprises: A first fixing and clamping device is arranged at the U-shaped portion of the pump tube; Two second fixing and clamping devices are respectively arranged at the straight line portions connected to the two ends of the U-shaped portion of the pump tube; Wherein, the first fixing and clamping device comprises: The first base plate is fixedly connected to the ground via fasteners; A first column, the lower end of which is welded to the first base plate; Two first clamping devices are respectively welded to two sides of the upper end of the first column to limit and fix the U-shaped portion of the pump tube; Each of the second fixing and clamping devices comprises: The second base plate is fixedly connected to the ground via fasteners; A second column, the lower end of which is welded to the second base plate; A second clamping device is welded to one side of the upper end of the second column to limit and fix the straight portion of the pump pipe.

2. The LNG ship pump tower pump pipe fixing and clamping assembly device according to claim 1 is characterized in that: The first clamping device comprises: A first adjustment plate, movably connected to the upper end of the first column, so as to adjust the horizontal fixing height of the first fixing clamping device; A first fixed baffle, which is vertically arranged, has a waist-shaped hole at its upper end, and is welded at one side of the first adjusting plate at its lower end; A first movable baffle, which is vertically arranged, has waist-shaped holes at both the upper and lower ends, and its lower end is connected to the first adjustment plate through the waist-shaped holes via a fastener, and is parallel to the first fixed baffle, with a certain distance between them; The first movable pressure plate has waist-shaped holes at both ends, one end of which is connected to the upper end of the first fixed baffle through the waist-shaped hole by a fastener, and the other end of which is connected to the upper end of the first movable baffle through the waist-shaped hole by a fastener.

3. The LNG ship pump tower pump pipe fixing and clamping assembly device according to claim 2 is characterized in that: The first adjustment plate, the first fixed baffle, the first movable baffle and the first movable pressure plate together form a first accommodating space; Among them, after the pump tube is inserted into the first accommodating space, the straightness of the pump tube is ensured by the first fixed baffle, and the pump tube is limited by adjusting the fasteners to tighten the different positions of the waist-shaped hole to fix the pump tube.

4. The LNG ship pump tower pump pipe fixing and clamping assembly device according to claim 3 is characterized in that: The waist-shaped hole is a "cross-shaped" waist-shaped hole, which contacts and limits the pump tube in four directions of up, down, left and right by adjusting the movement of the first fixed baffle, the first movable baffle and the first movable pressure plate in the horizontal and vertical directions.

5. The LNG ship pump tower pump pipe fixing and clamping assembly device according to claim 2 is characterized in that: The first fixing clamping device also includes a horizontal crossbeam, which is vertically fixedly connected to the first adjustment plate in each of the first clamping devices, and the top of the horizontal crossbeam contacts the bottom of the pipes on both sides of the U-shaped portion of the pump tube to support the pump tube.

6. The LNG ship pump tower pump pipe fixing and clamping assembly device according to claim 5 is characterized in that: The two ends of the horizontal cross beam are also provided with a fixed limiter and a movable limiter respectively; Wherein, each of the fixed stoppers is vertically fixedly arranged on the horizontal cross beam, and is arranged close to one side wall of the pipeline on both sides of the U-shaped portion of the pump pipe; Each movable stopper is movably connected to the horizontal crossbeam through a movable connecting piece to clamp the other side wall of the pipelines on both sides of the U-shaped portion of the pump pipe, thereby limiting and fixing the pipelines on both sides of the U-shaped portion of the pump pipe.

7. The LNG ship pump tower pump pipe fixing and clamping assembly device according to claim 1 is characterized in that: The second clamping device comprises: a second adjustment plate, movably connected to the upper end of the second column, so as to adjust the horizontal fixing height of the second fixing clamping device; A second fixed baffle, which is vertically arranged, has a waist-shaped hole at its upper end, and is welded at one side of the second adjusting plate at its lower end; The second movable baffle is vertically arranged, and has waist-shaped holes at the upper and lower ends, and the lower end thereof is connected to the second adjustment plate through the waist-shaped holes by fasteners, and is parallel to the second fixed baffle, and a certain distance is spaced between the two; The second movable pressure plate has waist-shaped holes at both ends, one end of which is connected to the upper end of the second fixed baffle through the waist-shaped hole by a fastener, and the other end of which is connected to the upper end of the second movable baffle through the waist-shaped hole by a fastener.

8. The LNG ship pump tower pump pipe fixing and clamping assembly device as claimed in claim 7 is characterized in that: The second adjustment plate, the second fixed baffle plate, the second movable baffle plate and the second movable pressure plate together form a second accommodating space; Among them, after the pump tube is inserted into the second accommodating space, the straightness of the pump tube is ensured by the second fixed baffle, and the pump tube is limited by adjusting the fasteners to tighten the different positions of the waist-shaped hole to fix the pump tube.

9. The LNG ship pump tower pump pipe fixing and clamping assembly device according to claim 8, characterized in that: The waist-shaped hole is a "cross-shaped" waist-shaped hole, which contacts and limits the pump tube in four directions of up, down, left and right by adjusting the movement of the second fixed baffle, the second movable baffle and the second movable pressure plate in the horizontal and vertical directions.

10. An operating method of a LNG ship pump tower pump pipe fixing and clamping assembly device, which is implemented by using the LNG ship pump tower pump pipe fixing and clamping assembly device as claimed in any one of claims 1 to 9, characterized in that: The specific steps include: S1. Install a first fixing clamping device at each U-shaped portion of the pump tube; S2, installing a second fixing clamping device at each straight portion connected to the end of the U-shaped portion; S3, adjusting the height of each first adjustment plate and the second adjustment plate so that each U-shaped portion and each straight portion are at the same horizontal plane height; S4, ensuring the straightness of the pump tube at each U-shaped portion through each of the first fixed baffles; and by adjusting each first movable baffle and the first movable pressure plate, each of the U-shaped portions is limitedly fixed in each first accommodation space; S5, supporting the pipelines on both sides of each U-shaped portion of the pump pipe by each horizontal cross beam; ensuring the straightness of the pipelines on both sides of each U-shaped portion of the pump pipe by each fixed stopper; and The pipes on both sides of each U-shaped portion are limited and fixed by adjusting each movable limiting member; S6, ensuring the straightness of the pump tube at each straight portion by each of the second fixed baffles; and fixing each of the straight portions within each of the second accommodating spaces by adjusting each of the second movable baffles and the second movable pressure plate; S7, completing the clamping and fixing of the pump tube, and performing subsequent welding operations.

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