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

Abstract

The invention discloses an LNG (Liquefied Natural Gas) ship pump tower main pump pipe assembling and positioning device which comprises three hoops which are respectively arranged on the outer cylindrical surface of each pump pipe in a sleeving manner 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. The distance between the pump pipes can be accurately fixed, construction is convenient, and the pump tower manufacturing quality and efficiency are obviously improved.

Description

Technical Field

[0001] The invention 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 LNG carriers (i.e. liquefied natural gas carriers) is the pump tower, which is generally installed in the liquid cargo tank and is equipped with a connection interface with the liquefied natural gas gas station on shore. The interface is used to transport the liquefied natural gas in the cabin to the gas station or inject it into the cabin from the gas station.

[0003] Therefore, the pump tower plays a very important role as an intermediate equipment for transporting liquefied natural gas between LNG ships and onshore gas stations. However, since the height of the pump tower exceeds 30 meters, the weight exceeds 30 tons, and the pump tower needs to be accurately positioned during installation, special tooling equipment must be used.

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

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

[0006] In order to achieve the above object, the present invention provides a main pump pipe assembly and positioning device for a LNG ship pump tower, comprising:

[0007] Three clamps, respectively sleeved on the outer cylindrical surface of each pump pipe, for clamping the pump pipe;

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

[0009] Wherein, two clamp mounting plates are arranged 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 sleeve and the second half ring sleeve 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 of the supporting tubes, 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 surface of the bolts.

[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 present invention 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 in assembly.

[0022] 2. The main pump pipe assembly and positioning device for an LNG ship pump tower provided by the present invention reduces the cost of production and manufacturing by combining the replacement of carbon steel materials with a surface anti-corrosion process.

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

[0024] Figure 1 It 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, objectives achieved and effects of the present invention are described in detail through preferred embodiments.

[0026] 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.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The present invention provides a main pump pipe assembly and positioning device for an LNG ship pump tower, which is used to accurately position and install 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 three clamps 100 are respectively the three vertices of the triangle shape, and the three support tubes 200 are respectively the three 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 is an equilateral triangle structure.

[0031] Two clamp mounting plates 101 are provided on each clamp 100, and the two clamp mounting plates 101 are provided at an angle of 60° to fix and connect two support pipes 200 close to the clamp 100. Specifically, the clamp mounting plates 101 are provided on the clamp 100 by welding.

[0032] A support tube mounting plate 201 is welded at both ends of each support tube 200; the clamp mounting plate 101 and the support tube mounting plate 201 are connected one by one to achieve a fixed connection between the three support tubes 200 and the three clamps 100. Specifically, the clamp mounting plate 101 and the support tube mounting plate 201 are connected by high-strength bolts with a strength of 8.8 or above.

[0033] Further, the hoop 100 comprises 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. Connecting parts are provided at both ends of the first half ring and the second half ring for connecting the first half ring and the second half ring; specifically, the first half ring and the second half ring are fixedly connected by screwing bolts into the connecting parts of the first half ring and the second half ring.

[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 in 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 and the clamp 100, the distance between the three pump tubes needs to be accurately measured to ensure that the distance deviation between each two pump tubes is less than 1mm. Then, the first half ring sleeve and the second half ring sleeve with matching inner diameter are placed on the outer cylindrical surface of each pump tube, and then the first half ring sleeve and the second half ring sleeve are fixedly connected by bolts, and then the clamp mounting plate 101 and the support tube mounting plate 201 are connected one by one by high-strength bolts, and finally the pump tube is assembled and positioned.

[0036] A hanging plate 202 is also provided in the middle of each of the support pipes 200, and the hanging plate 202 is used for hanging the main pump pipe assembly and positioning device of the pump tower; specifically, after each of the hanging plates 202, that is, 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 to replace stainless steel to achieve low production costs; in addition, in order to improve the corrosion resistance of the pump tower main pump pipe assembly 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 main pump pipe assembly and positioning device for an LNG ship pump tower provided by the present invention 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 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 invention. After reading the above content, it will be obvious to those skilled in the art for various modifications and substitutions of the present invention. Therefore, the protection scope of the present invention should be limited by the attached 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 arranged 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 by one with the clamp mounting plates (101).

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

3. The main pump pipe assembly and positioning device for the LNG ship pump tower according to claim 1, characterized in that: Each of the clamps (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 main pump pipe assembly and positioning device for the LNG ship pump tower according to claim 3 is characterized in that: The first half ring sleeve and the second half ring sleeve 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.

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

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

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

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

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