LNG cryogenic storage tank pump well pipe through pipe test device

Abstract

The utility model discloses a LNG low temperature storage tank pump well pipe passes through pipe test device, low temperature storage tank technical field, including the connecting steel pipe, the lifting lug, the square block, first circular steel sheet, second circular steel sheet, first connecting screw and second connecting screw, the upper end of connecting steel pipe sets up first circular steel sheet, and the lower extreme of connecting steel pipe sets up second circular steel plate, set up the lifting lug on first circular steel plate, set up the first square block on first circular steel plate, set up the second square block on second circular steel plate. Can test the perpendicularity of pump well pipe and whether the pipe welding seam excess height satisfies the installation requirement of low temperature delivery pump, guarantees the installation quality of low temperature delivery pump, and then guarantees the security of the security of later use.

Description

Technical Field

[0001] This utility model belongs to the field of cryogenic storage tank technology, specifically relating to a test device for the pipeline connection of an LNG cryogenic storage tank pump well. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] The verticality of the LNG cryogenic storage tank pump well pipe and the height of the inner weld seam are key factors for the successful installation of the cryogenic transfer pump in one go. During the construction of the pump well pipe, the technical level of the welding operators and the control of verticality during hoisting and installation will affect the overall installation quality of the pump well pipe.

[0004] To ensure successful installation of the cryogenic transfer pump on the first attempt, a pipe-through test must be conducted using a pipe-through testing device before installation. This test verifies that the verticality of the pump well pipe and the weld reinforcement of the pipes meet the installation requirements of the cryogenic transfer pump. Only after a successful test can the cryogenic transfer pump be installed. If the cryogenic transfer pump is installed directly without using a pipe-through testing device, the installation quality cannot be guaranteed, which will affect the subsequent use of the cryogenic transfer pump. Utility Model Content

[0005] To address the aforementioned issues, this invention provides an LNG cryogenic storage tank pump well pipe flow test device, which can test whether the verticality of the pump well pipe and the weld reinforcement of the pipe meet the installation requirements of the cryogenic delivery pump, ensuring the installation quality of the cryogenic delivery pump and thus guaranteeing its safety in later use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An LNG cryogenic storage tank pump well pipe connection test device includes a connecting steel pipe, a lifting lug, a square block, a first circular steel plate, a second circular steel plate, a first connecting screw, and a second connecting screw; the upper end of the connecting steel pipe is provided with the first circular steel plate, and the lower end of the connecting steel pipe is provided with the second circular steel plate; the lifting lug is provided on the first circular steel plate, the first square block is provided on the first circular steel plate, and the second square block is provided on the second circular steel plate.

[0007] Furthermore, the upper end of the connecting steel pipe is fixedly connected to the first circular steel plate, and the lower end of the connecting steel pipe is fixedly connected to the second circular steel plate.

[0008] Furthermore, the diameter of the first circular steel plate is larger than the diameter of the connecting steel pipe, and the diameter of the second circular steel plate is larger than the diameter of the connecting steel pipe.

[0009] Furthermore, several square blocks are spaced apart, one end of each square block is connected to the first circular steel plate, and several threaded holes are spaced apart on each square block.

[0010] Furthermore, the first circular steel plate is provided with threaded holes, and the threaded holes on the first circular steel plate are aligned with the threaded holes on the first square block.

[0011] Furthermore, the first connecting screw is disposed in the threaded hole of the first circular steel plate and the first square block, and the first connecting screw is used to connect the first circular steel plate and the first square block.

[0012] Furthermore, several second square blocks are spaced apart, one end of the second square block is connected to the second circular steel plate, and several threaded holes are spaced apart on the second square block.

[0013] Furthermore, the second circular steel plate is provided with threaded holes, and the threaded holes on the second circular steel plate are aligned with the threaded holes on the second square block.

[0014] Furthermore, the second connecting screw is disposed in the threaded hole of the second circular steel plate and the second square block, and the second connecting screw is used to connect the first circular steel plate and the first square block.

[0015] Furthermore, the lifting lug is fixedly connected to the first circular steel plate, and the lifting lug is provided with a circular hole.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are: This utility model comprises a pipe-through testing device, also known as a pump well gauge, consisting of a connecting steel pipe, lifting lugs, a square block, a first circular steel plate, a second circular steel plate, a first connecting screw, and a second connecting screw. The pump well gauge is a "dummy pump" with the same outer diameter as the cryogenic delivery pump. The device is simple to manufacture, uses readily available materials, is low in cost, and can be reused after completion. Furthermore, it is easy to operate, effectively saving costs, improving construction progress and efficiency, ensuring the smooth installation of the cryogenic delivery pump, and testing whether the verticality of the pump well pipe and the weld reinforcement of the pipe meet the installation requirements of the cryogenic delivery pump, thus ensuring the installation quality of the cryogenic delivery pump and consequently guaranteeing its safety in later use. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0018] Figure 1 This is a structural diagram of the LNG cryogenic storage tank pump well pipe connection test device of this utility model; Figure 2 This is an installation diagram of the LNG cryogenic storage tank pump well pipe connection test device of this utility model; In the diagram: 1. Lifting lug; 2. First circular steel plate; 3. Connecting steel pipe; 4. Second square block; 5. First connecting screw; 6. Pump well pipe; 7. Weld; 8. Second circular steel plate; 9. First square block; 10. Second connecting screw. Detailed Implementation

[0019] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0020] To ensure successful installation of the cryogenic transfer pump on the first attempt, a pipe-through test must be conducted using a pipe-through testing device before installation. This test verifies that the verticality of the pump well pipe and the weld reinforcement of the pipes meet the installation requirements of the cryogenic transfer pump. Only after a successful test can the cryogenic transfer pump be installed. If the cryogenic transfer pump is installed directly without using a pipe-through testing device, the installation quality cannot be guaranteed, which will affect the subsequent use of the cryogenic transfer pump.

[0021] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses an LNG cryogenic storage tank pump well pipe connection test device, such as... Figure 1 As shown, it includes a connecting steel pipe 3, a lifting lug 1, a square block, a first circular steel plate 2, a second circular steel plate 8, a first connecting screw 5, and a second connecting screw 10; the upper end of the connecting steel pipe 3 is provided with the first circular steel plate 2, and the lower end of the connecting steel pipe 3 is provided with the second circular steel plate 8; the lifting lug 1 is provided on the first circular steel plate 2, the first square block 9 is provided on the first circular steel plate 2, and the second square block 4 is provided on the second circular steel plate 8.

[0022] A pipe-through testing device, also known as a pump well gauge, is constructed by connecting steel pipe 3, lifting lug 1, square block, first circular steel plate 2, second circular steel plate 8, first connecting screw 5, and second connecting screw 10. This device is a "dummy pump" with the same outer diameter as the cryogenic pump. It is simple to manufacture, uses readily available materials, is low-cost, and can be reused after completion. Furthermore, it is easy to operate, effectively saving costs, improving construction progress and efficiency, ensuring the smooth installation of the cryogenic pump, and testing whether the verticality of the pump well pipe 6 and the excess height of the pipe weld 7 meet the installation requirements of the cryogenic pump, thus ensuring the installation quality of the cryogenic pump and consequently guaranteeing its safety in later use.

[0023] The upper end of the connecting steel pipe 3 is fixedly connected to the first circular steel plate 2, and the lower end of the connecting steel pipe 3 is fixedly connected to the second circular steel plate 8. The diameter of the first circular steel plate 2 is larger than the diameter of the connecting steel pipe 3, and the diameter of the second circular steel plate 8 is larger than the diameter of the connecting steel pipe 3.

[0024] The first circular steel plate 2 and the second circular steel plate 8 have the same structure; the first square block 9 and the second square block 4 have the same structure; the first connecting screw 5 and the second connecting screw 10 have the same structure. That is, the entire test device consists of two circular steel plates, one connecting steel pipe 3, one lifting lug 1, eight copper blocks, and 16 screws. One circular steel plate and one lifting lug 1 are welded to each end of the connecting steel pipe 3, and another circular steel plate is welded to the other end. Four copper blocks are symmetrically arranged on each circular steel plate. Each copper block is fixed to the circular steel plate with two screws. The diameter of the circle containing the outer edge of the four copper blocks is the same as the diameter of the cryogenic delivery pump. After the carbon steel components are welded, surface anti-corrosion construction should be carried out to avoid corrosion of the stainless steel pump well pipe 6.

[0025] Several first square blocks 9 are spaced apart, one end of each first square block 9 is connected to a first circular steel plate 2, and several threaded holes are spaced apart on each first square block 9. Threaded holes are also provided on the first circular steel plate 2, and their positions are aligned with the threaded holes on the first square blocks 9. A first connecting screw 5 is disposed within the threaded holes on both the first circular steel plate 2 and the first square blocks 9, and is used to connect them. Several second square blocks 4 are spaced apart, one end of each second square block 4 is connected to a second circular steel plate 8, and several threaded holes are spaced apart on each second square block 4. Threaded holes are also provided on the second circular steel plate 8, and their positions are aligned with the threaded holes on the second square blocks 4. A second connecting screw 10 is disposed within the threaded holes on both the second circular steel plate 8 and the second square blocks 4, and is used to connect the first circular steel plate 2 and the first square blocks 9. The square blocks are mounted on the circular steel plate by connecting screws. Multiple connecting screws, threaded holes on the circular steel plate, and threaded holes on the square blocks are provided to ensure a firm connection. The diameter of the testing device can be adjusted by replacing different square blocks, making it highly adaptable.

[0026] The lifting lug 1 is fixedly connected to the first circular steel plate 2, and the lifting lug 1 has a circular hole. The circular hole on the lifting lug 1 is used to connect with the lifting device for lifting the test device.

[0027] Instructions for using the experimental apparatus: like Figure 2As shown, a test device, also known as a pump well gauge, is composed of connecting steel pipe 3, lifting lug 1, square block, first circular steel plate 2, second circular steel plate 8, first connecting screw 5, and second connecting screw 10. The operation of the pump well gauge involves adjusting the size of the first square block 9 and the second square block 4 to change the diameter, ensuring that the diameter of the circle containing the outer edge of the copper block matches the diameter of the cryogenic delivery pump, thereby conducting a pipe clearance test on the pump well pipe 6. During the test, a cantilever crane lifts the lifting lug 1 of the pump well gauge, lowering it at the minimum speed until it reaches the installation position of the cryogenic delivery pump. The lifting process of the pump well gauge should be carried out slowly to avoid bumping or damaging the pump well pipe 6.

[0028] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A test device for the pipe connection of an LNG cryogenic storage tank pump well pipe, characterized in that, It includes a connecting steel pipe, a lifting lug, a square block, a first circular steel plate, a second circular steel plate, a first connecting screw, and a second connecting screw; the upper end of the connecting steel pipe is provided with a first circular steel plate, and the lower end of the connecting steel pipe is provided with a second circular steel plate; the first circular steel plate is provided with a lifting lug, the first circular steel plate is provided with a first square block, and the second circular steel plate is provided with a second square block.

2. The LNG cryogenic storage tank pump well pipe connection test device as described in claim 1, characterized in that, The upper end of the connecting steel pipe is fixedly connected to the first circular steel plate, and the lower end of the connecting steel pipe is fixedly connected to the second circular steel plate.

3. The LNG cryogenic storage tank pump well pipe connection test device as described in claim 1, characterized in that, The diameter of the first circular steel plate is larger than the diameter of the connecting steel pipe, and the diameter of the second circular steel plate is larger than the diameter of the connecting steel pipe.

4. The LNG cryogenic storage tank pump well pipe connection test device as described in claim 1, characterized in that, The first square block is arranged at intervals of several, one end of the first square block is connected to the first circular steel plate, and the first square block is arranged at intervals of several threaded holes.

5. The LNG cryogenic storage tank pump well pipe connection test device as described in claim 4, characterized in that, The first circular steel plate is provided with threaded holes, and the threaded holes on the first circular steel plate are aligned with the threaded holes on the first square block.

6. The LNG cryogenic storage tank pump well pipe connection test device as described in claim 5, characterized in that, The first connecting screw is disposed in the threaded hole of the first circular steel plate and the first square block, and the first connecting screw is used to connect the first circular steel plate and the first square block.

7. The LNG cryogenic storage tank pump well pipe connection test device as described in claim 1, characterized in that, The second square blocks are spaced apart by several, one end of the second square block is connected to the second circular steel plate, and the second square blocks are spaced apart by several threaded holes.

8. The LNG cryogenic storage tank pump well pipe connection test device as described in claim 7, characterized in that, The second circular steel plate is provided with threaded holes, and the threaded holes on the second circular steel plate are aligned with the threaded holes on the second square block.

9. The LNG cryogenic storage tank pump well pipe connection test device as described in claim 8, characterized in that, The second connecting screw is disposed in the threaded hole of the second circular steel plate and the second square block, and the second connecting screw is used to connect the first circular steel plate and the first square block.

10. The LNG cryogenic storage tank pump well pipe connection test device as described in claim 1, characterized in that, The lifting lug is fixedly connected to the first circular steel plate, and the lifting lug is provided with a circular hole.

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