Assembling and positioning device for main pump pipe of LNG (Liquefied Natural Gas) ship pump tower

Abstract

The utility model discloses an LNG (Liquefied Natural Gas) ship pump tower main pump pipe assembling and positioning device which comprises three hoops which are respectively sleeved on the outer cylindrical surface of each pump pipe and are used for hooping the pump pipes; every two hoops are connected through one supporting pipe, so that a triangular shape is formed to support the hoops; wherein each hoop is provided with two hoop mounting plates so as to fixedly connect the two supporting pipes close to the hoop; the two ends of each supporting pipe are provided with supporting pipe mounting plates in a welded mode so as to be connected with the hoop mounting plates in a one-to-one mode. According to the utility model, the distance between the pump pipes can be accurately fixed, the construction is convenient, and the manufacturing quality and efficiency of the pump tower are obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of advanced manufacturing of high-tech ships, in particular to an assembly and positioning device for a main pump pipe of a LNG ship pump tower. Background Art

[0002] The core equipment of an LNG carrier (i.e., a liquefied natural gas carrier) is the pump tower, which is generally installed in the cargo tank and has a connection interface to an onshore LNG station. This interface is used to transport LNG from the ship's hold to the station or to inject it into the ship's hold from the station.

[0003] Therefore, pump towers play a crucial role as intermediate equipment for transporting liquefied natural gas between LNG carriers and onshore gas stations. However, because pump towers exceed 30 meters in height and weigh over 30 tons, and their precise positioning during installation is essential, specialized tooling equipment is essential.

[0004] In existing tooling equipment, it is difficult to meet the distance dimension deviation requirements for the three pump pipes that constitute the pump tower during installation, and the commonly used 316L low-temperature resistant stainless steel is relatively expensive. Utility Model Content

[0005] The purpose of the utility model is to provide an LNG ship pump tower main pump pipe assembly and positioning device, which can meet the high requirements of the distance size deviation of the three pump pipes constituting the pump tower during installation, and replace the parts of the pump tower main pump pipe assembly and positioning device that do not contact the pump tower with carbon steel materials, thereby avoiding corrosion of the pump tower and reducing the manufacturing cost.

[0006] To achieve the above-mentioned purpose, the utility model provides an LNG ship pump tower main pump pipe assembly and positioning device, comprising:

[0007] Three clamps are respectively mounted on the outer cylindrical surface of each pump pipe to tighten the pump pipe;

[0008] 3 support tubes, each two clamps are connected by a support tube, forming a triangle shape to support the clamps;

[0009] Wherein, two clamp mounting plates are provided on each clamp to fix and connect two support pipes close to the clamp;

[0010] Support tube mounting plates are welded at both ends of each support tube to be connected one by one with the clamp mounting plates.

[0011] Optionally, the two clamp mounting plates on each clamp are arranged at an angle of 60°.

[0012] Optionally, each of the clamps includes a first half ring and a second half ring, and the first half ring and the second half ring are arranged opposite to each other to clamp the outer cylindrical surface of the pump tube.

[0013] Optionally, the first half ring and the second half ring are replaced according to the thickness of the pump tube, so that the inner diameter of the clamp matches the outer diameter of the pump tube.

[0014] Optionally, the clamp mounting plate and the support tube mounting plate are fixedly connected by bolts.

[0015] Optionally, a hanging plate is provided in the middle of each supporting tube, and the hanging plate is used for hanging the main pump pipe assembly positioning device of the pump tower.

[0016] Optionally, the clamp is made of stainless steel plate.

[0017] Optionally, the clamp mounting plate, support tube mounting plate and bolts are all carbon steel parts.

[0018] Optionally, an anti-corrosion layer is coated on the clamp mounting plate, the support tube mounting plate and the bolt surface.

[0019] Optionally, the surfaces of the clamp mounting plate and the support tube mounting plate are coated with anti-rust paint; and the surface of the bolt is galvanized.

[0020] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The utility model provides an LNG ship pump tower main pump pipe assembly and positioning device, which can meet the high requirements for distance size deviation of the pump tower main pump pipe during installation, and is also convenient for assembly.

[0022] 2. The utility model provides an LNG ship pump tower main pump pipe assembly and positioning device, which reduces the production cost by replacing carbon steel materials and combining surface anti-corrosion technology.

[0023] 3. The utility model provides an LNG ship pump tower main pump pipe assembly and positioning device, which can be used as a shipping protection device for the pump tower and plays an important protective role during the lifting, storage and transportation of the pump tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of the main pump pipe assembly positioning device of the pump tower of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the attached Figure 1 , the technical content, structural features, achieved objectives and effects of the utility model are described in detail through preferred embodiments.

[0026] 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.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0029] The utility model provides a LNG ship pump tower main pump pipe assembly positioning device, which is used to accurately position and install the three pump pipes of the pump tower. Figure 1 As shown, the pump tower main pump pipe assembly and positioning device includes: 3 clamps 100, which are respectively sleeved on the outer cylindrical surface of each pump pipe to tighten the pump pipe; 3 support tubes 200, and every two clamps 100 are connected by a support tube 200 to form a triangular shape to support the clamps 100, so the 3 clamps 100 are the 3 vertices of the triangle shape, and the 3 support tubes 200 are the 3 sides of the triangle shape.

[0030] In the design of the assembly and positioning device for the main pump pipe of the pump tower, the equilateral triangle structure is a more stable and reliable structural form. Therefore, the assembly and positioning device for the main pump pipe of the pump tower of the present invention has an equilateral triangle structure.

[0031] Among them, two clamp mounting plates 101 are set on each clamp 100, and the two clamp mounting plates 101 are set at a 60° angle to fix the two support pipes 200 close to the clamp 100. Specifically, the clamp mounting plates 101 are set on the clamp 100 in a welding manner.

[0032] A support tube mounting plate 201 is welded to each end of each support tube 200. The clamp mounting plates 101 are connected to the support tube mounting plates 201 one by one, thereby securing the three support tubes 200 to the three clamps 100. Specifically, the clamp mounting plates 101 and the support tube mounting plates 201 are connected using high-strength bolts with a strength of at least 8.8.

[0033] Furthermore, the clamp 100 includes a first half-ring and a second half-ring, which are arranged opposite to each other to clamp the outer cylindrical surface of the pump tube. Connecting portions are provided at both ends of the first half-ring and the second half-ring for connection between the first and second half-rings. Specifically, the first and second half-rings are fixedly connected by screwing bolts into the connecting portions of the first and second half-rings.

[0034] In a specific embodiment of the present invention, the first half ring and the second half ring can be replaced according to the thickness of the pump tube, so that the inner diameter of the clamp 100 matches the outer diameter of the pump tube. Figure 1 As shown, when the pump tube at the top of the figure is a pump tube with a larger outer diameter, the first half ring sleeve and the second half ring sleeve with a larger inner diameter are selected to clamp the pump tube with a larger outer diameter; when the pump tubes on the left and right sides below the figure are pump tubes with a smaller outer diameter, the first half ring sleeve and the second half ring sleeve with a smaller inner diameter are selected to clamp the pump tube with a smaller outer diameter.

[0035] Before connecting the support tube 200 to the clamp 100, the distances between the three pump tubes must be precisely measured to ensure that the distance deviation between each pair is less than 1mm. Next, the first and second half-rings, each with matching inner diameters, are placed over the outer cylindrical surface of each pump tube. Bolts securely connect the first and second half-rings, and the clamp mounting plate 101 and support tube mounting plate 201 are then connected one by one using high-strength bolts, completing the assembly and positioning of the pump tubes.

[0036] A hanging plate 202 is also provided in the middle of each of the support tubes 200, and the hanging plate 202 is used for lifting the main pump pipe assembly and positioning device of the pump tower; specifically, after each of the hanging plates 202, that is, the three hanging plates 202 are connected to the lifting equipment, the main pump pipe assembly and positioning device of the pump tower can also be used as an auxiliary device for lifting, storing and transporting the pump pipe.

[0037] Preferably, the support tube 200 is a steel tube; the clamp 100 is made of a stainless steel plate; the clamp mounting plate 101, the support tube mounting plate 201 and the bolts are all carbon steel parts, replacing stainless steel to achieve low production costs; in addition, in order to improve the corrosion resistance of the pump tower main pump pipe assembly and positioning device (i.e., to improve the corrosion resistance of carbon steel parts), the surfaces of the clamp mounting plate 101 and the support tube mounting plate 201 are coated with anti-rust paint, and the surface of the bolts is galvanized.

[0038] In summary, the utility model provides an LNG ship pump tower main pump pipe assembly and positioning device, which can accurately fix the distance between the pump pipes, control the distance tolerance within a certain range, and is easy to construct, thereby significantly improving the quality and efficiency of pump tower manufacturing.

[0039] 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 construed as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will become 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. An LNG ship pump tower main pump pipe assembly and positioning device, characterized in that: Include: Three clamps (100), respectively sleeved on the outer cylindrical surface of each pump pipe, for clamping the pump pipe; Three support tubes (200), each two of the clamps (100) are connected via a support tube (200), forming a triangular shape to support the clamps (100); Wherein, two clamp mounting plates (101) are provided on each clamp (100) to fixedly connect two support pipes (200) close to the clamp (100); Support tube mounting plates (201) are welded at both ends of each support tube (200) to be connected one-to-one with the clamp mounting plates (101).

2. The LNG ship pump tower main pump pipe assembly and positioning device according to claim 1, characterized in that: The two clamp mounting plates (101) on each clamp (100) are arranged at an angle of 60 degrees.

3. The LNG ship pump tower main pump pipe assembly and positioning device according to claim 1, characterized in that: Each of the hoop (100) comprises a first half ring and a second half ring, wherein the first half ring and the second half ring are arranged opposite to each other to clamp the outer cylindrical surface of the pump tube.

4. The LNG ship pump tower main pump pipe assembly and positioning device according to claim 3, characterized in that: The first half ring and the second half ring can be replaced according to the thickness of the pump tube, so that the inner diameter of the hoop (100) matches the outer diameter of the pump tube.

5. The LNG ship pump tower main pump pipe assembly and positioning device according to claim 1, characterized in that: The hoop mounting plate (101) and the support tube mounting plate (201) are fixedly connected by bolts.

6. The LNG ship pump tower main pump pipe assembly and positioning device according to claim 1, characterized in that: A hanging plate (202) is also provided in the middle of each support pipe (200), and the hanging plate (202) is used for hanging the main pump pipe assembly positioning device of the pump tower.

7. The LNG ship pump tower main pump pipe assembly and positioning device according to claim 5, characterized in that: The clamp (100) is made of stainless steel plate.

8. The LNG ship pump tower main pump pipe assembly and positioning device according to claim 5, characterized in that: The hoop mounting plate (101), the support tube mounting plate (201) and the bolts are all carbon steel parts.

9. The LNG ship pump tower main pump pipe assembly and positioning device according to claim 8, characterized in that: An anti-corrosion layer is coated on the surfaces of the clamp mounting plate (101), the support pipe mounting plate (201) and the bolts.

10. The LNG ship pump tower main pump pipe assembly and positioning device according to claim 9, characterized in that: The surfaces of the clamp mounting plate (101) and the support tube mounting plate (201) are coated with anti-rust paint; and the surface of the bolt is galvanized.

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