Fixed clamping combination device for pump pipe of LNG ship pump tower

Abstract

The utility model relates to an LNG (liquefied natural gas) ship pump tower pump pipe fixing, clamping and combining device, a pump pipe comprises a plurality of U-shaped parts and straight line parts respectively connected with two ends of each U-shaped part, the fixing, clamping and combining device comprises a first fixing and clamping device, a second fixing and clamping device, a third fixing and clamping device and a fourth fixing and clamping device, 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 device can effectively control the planeness and straightness of the pump pipe, and is simple to install and low in cost.

Description

Technical Field

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

[0002] The pump tower is a crucial functional component in the cargo area of ​​an LNG carrier. Suspended vertically in each cargo hold, it handles the loading and unloading of liquefied natural gas. The pump pipe (injection pipe), a crucial component of the pump tower, is primarily made of low-temperature stainless steel (operating at -163°C). This material has a high coefficient of linear expansion and is prone to deformation and shrinkage after welding. Furthermore, the structure, composed of multiple U-shaped and straight sections, is 32 meters long and requires a linearity tolerance of ±5mm, necessitating extremely high manufacturing precision.

[0003] In current technology, the jet pipe is typically hoisted using several roller supports. From this position, the pipe's height, straightness, and dimensions are adjusted before assembly and welding. Problems with this hoisting method include: The jet pipe rests on the roller supports, leaving no reference position for installation and ensuring straightness; lacking restraint between the jet pipe and the roller supports, preventing dimensional and deformation control during installation and welding; and lacking a baseline for inspection and acceptance, making inspection complex and difficult. Therefore, designing a fixing and clamping device to overcome these drawbacks is crucial.

[0004] It is to be understood that the above statements merely provide background technology related to the present invention and do not necessarily constitute prior art. Utility Model Content

[0005] The utility model aims to provide a combined device for fixing and clamping pump pipes of an LNG ship pump tower, which can effectively control the flatness and straightness problems of the pump pipes during welding.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a LNG ship pump tower pump pipe fixing and clamping assembly device, wherein the pump pipe includes a plurality of U-shaped parts and straight parts respectively connected to the two ends of each U-shaped part.

[0007] Wherein, the fixing and clamping assembly device includes: 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 includes: a first base plate fixedly connected to the ground by fasteners; a first column, the lower end of which is welded to the first base plate; and two first clamping devices, 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, the lower end of which 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 part of the pump pipe.

[0010] Preferably, the first clamping device includes: a first adjusting 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, with a waist-shaped hole on the upper end and the lower end welded to one side of the first adjusting plate; a first movable baffle, which is vertically arranged, with waist-shaped holes on the upper and lower ends, and its lower end is connected to the first adjusting plate through the waist-shaped hole by a fastener, and it is parallel to the first fixed baffle, and there is a certain distance between the two; a first movable pressure plate, with 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 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.

[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 to fix the pump tube.

[0012] Preferably, the waist-shaped hole is a "cross-shaped" waist-shaped hole, which is adjusted to move the first fixed baffle, the first movable baffle and the first movable pressure plate in the horizontal and vertical directions so as to contact and limit the pump tube in four directions of up, down, left and right.

[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 pipe to support the pump pipe.

[0014] Preferably, fixed limiting members and movable limiting members are respectively provided at both ends of the horizontal cross beam; wherein, each of the fixed limiting 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 limiting 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 adjusting 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, with a waist-shaped hole on the upper end and the lower end welded to one side of the second adjusting plate; a second movable baffle, which is vertically arranged, with waist-shaped holes on both the upper and lower ends, and its lower end is connected to the second adjusting plate through a fastener passing through the waist-shaped hole, and it is parallel to the second fixed baffle, and there is a certain distance between the two; a second movable pressure plate, with 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 to fix the pump tube.

[0017] Preferably, 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.

[0018] Preferably, the first fixing clamping device and the second fixing clamping device are both made of stainless steel.

[0019] To sum up, compared with the existing technology, the utility model provides an LNG ship pump tower pump pipe fixing and clamping combination device, 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 This is a schematic diagram of the arrangement of the fixed clamping assembly device in the present utility model;

[0021] Figure 2 This is a front view of the first fixing and clamping device in the present utility model;

[0022] Figure 3 This is a side view of the first fixing and clamping device in the present utility model;

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

[0024] Figure 5 This is a front view of the second fixing and clamping device in the present utility model;

[0025] Figure 6 This is a side view of the second fixing and clamping device in the present utility model;

[0026] Figure 7 This is a schematic diagram of the utility model fixing clamping assembly device to fix the entire pump pipe. DETAILED DESCRIPTION

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

[0028] It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the implementation methods 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 should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0029] It should be noted that, in the present invention, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus comprising 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 apparatus.

[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 connected to the two ends of each U-shaped portion 91. The present invention provides an LNG ship pump tower pump pipe fixing and clamping assembly device to fix the pump pipe 9. The fixing and clamping assembly device includes: a first fixing and clamping device 1, which is provided at the U-shaped portion 91 of the pump pipe 9; and two second fixing and clamping devices 2, which are respectively provided 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 Figures 2 to 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, the lower end of which is welded to the first base plate 11; two first clamping devices 13, 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, with a waist-shaped hole on the upper end, and the lower end is welded to one side of the first adjusting plate 131; a first movable baffle 133, which is vertically arranged, with waist-shaped holes on both the upper and lower ends, and its lower end is connected to the first adjusting plate 131 through a fastener passing through the waist-shaped hole, and it is parallel to the first fixed baffle 132, and there is a certain distance between the two; a first movable pressure plate 134, with waist-shaped holes on 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 to fix the pump tube 9.

[0035] It can be understood that in the embodiment of the present utility model, 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 fasteners can be moved in the up and down, left and right directions, and then the first fixed baffle 132, the first movable baffle 133 and the first movable pressure plate 134 can be adjusted in the horizontal and vertical directions within a certain range, so as to contact and limit the pump pipe 9 in the four directions of up, down, left and right, and be used to clamp and fix pump pipes 9 of different specifications and sizes, and at the same time can 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 contacts the bottom of the pipes on both sides of the U-shaped portion 91 of the pump pipe 9 to support the pump pipe 9.

[0038] Furthermore, fixed limit members 61 and movable limit members 62 are respectively provided at both ends of the horizontal crossbeam 6; each of the fixed limit members 61 is vertically fixed on the horizontal crossbeam 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 crossbeam 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, the lower end of which is welded to the second base plate 21; a second clamping device 23, 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, with a waist-shaped hole on the upper end, and the lower end is welded to one side of the second adjusting plate 231; a second movable baffle 233, which is vertically arranged, with waist-shaped holes on both the upper and lower ends, and its lower end is connected to the second adjusting plate 231 through a fastener passing through the waist-shaped hole, and it is parallel to the second fixed baffle 232, and there is a certain distance between the two; a second movable pressure plate 234, with 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 to fix the pump tube 9.

[0042] It can be understood that in the embodiment of the present utility model, the setting of the various waist-shaped holes in the second clamping device 23 is based on the same principle as the setting of the various waist-shaped holes in the first clamping device 13, and is also partially horizontally set and partially vertically set, so as to achieve the 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, which is used to clamp and fix pump tubes 9 of different specifications and sizes.

[0043] In a preferred embodiment of the present invention, each of the waist-shaped holes 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, thereby extending 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] In addition, this patent also provides an operating method for a LNG ship pump tower pump pipe fixing and clamping assembly device, which is implemented using the above-mentioned fixing and clamping assembly device and specifically includes the following steps:

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

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

[0049] S3, 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 height;

[0050] S4. Ensure the straightness of the pump tube 9 at each U-shaped portion 91 by using each first fixed baffle 132; and limit and fix each U-shaped portion 91 in each first accommodating space 15 by adjusting each first movable baffle 133 and first movable pressure plate 134;

[0051] S5. Support the pipes on both sides of each U-shaped portion 91 of the pump pipe 9 by each horizontal crossbeam 6; ensure the straightness of the pipes on both sides of each U-shaped portion 91 of the pump pipe 9 by each fixed stopper 61; and limit and fix the pipes 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 using 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] To sum up, the utility model is a LNG ship pump tower pump pipe fixing and clamping combination device, which can effectively control the flatness and straightness problems of the pump pipe, 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 present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

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

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 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 to one side of the first adjustment plate at its lower end; a first movable baffle, which is vertically arranged, and has waist-shaped holes at both the upper and lower ends, and a lower end thereof connected to the first adjustment plate via a fastener passing through the waist-shaped holes, and is parallel to the first fixed baffle, with a certain distance between them; The first movable pressure plate is provided with waist-shaped holes at both ends. One end of the first movable pressure plate is connected to the upper end of the first fixed baffle through the waist-shaped hole by a fastener, and the other end of the first movable baffle 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 pipe to support the pump pipe.

6. The LNG ship pump tower pump pipe fixing and clamping assembly device according to claim 5, characterized in that: The two ends of the horizontal beam are respectively provided with a fixed limiting member and a movable limiting member; Wherein, each of the fixed stoppers is vertically fixed on the horizontal 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 limiting member is movably connected to the horizontal crossbeam member 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.

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 to adjust the horizontal fixing height of the second fixing clamping device; A second fixed baffle is vertically arranged, with a waist-shaped hole provided at the upper end and a lower end welded to one side of the second adjustment plate; The second movable baffle is vertically arranged, with waist-shaped holes on both the upper and lower ends, and the lower end of the second movable baffle is connected to the second adjustment plate by fasteners passing through the waist-shaped holes, and is parallel to the second fixed baffle, with a certain distance between them; The second movable pressure plate is provided with waist-shaped holes at both ends. One end of the second movable pressure plate is connected to the upper end of the second fixed baffle through the waist-shaped hole by a fastener, and the other end of the second movable baffle 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 according to claim 7, characterized in that: The second adjustment plate, the second fixed baffle, the second movable baffle 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 achieve the fixation of 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. The LNG ship pump tower pump pipe fixing and clamping assembly device according to claim 1, characterized in that: The first fixing clamping device and the second fixing clamping device are both made of stainless steel.

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