Seal-free LNG immersed pump

Abstract

The utility model relates to the technical field of immersed pumps, in particular to an unsealed LNG immersed pump which comprises an installation support, an auxiliary support is fixedly connected to the inner surface of a supporting frame of the installation support, bolt holes are formed in the surface of the auxiliary support, and a limiting clamping groove is formed in the top face of the supporting frame of the installation support. The unsealed LNG immersed pump has the advantages that the auxiliary support is fixedly connected to the inner surface of the supporting frame of the mounting support, then the bolt holes are formed in the surface of the auxiliary support, and therefore bolts can penetrate through the surfaces of the bolt holes conveniently to be fixed to an LNG tank body, and the limiting clamping grooves are formed in the top face of the supporting frame of the mounting support, so that the bolts can be fixed to the LNG tank body conveniently. The surface of the limiting clamping groove is connected with a limiting clamping plate in a clamped mode, the top face of the limiting clamping plate is fixedly connected with the bottom face of the pump body mounting plate, and the submersible pump body is arranged on the top face of the pump body mounting plate, so that the submersible pump body is stably mounted on the top face of the mounting support, and the submersible pump body and the LNG tank body can be stably connected.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible pumps, in particular to a seal-less LNG submersible pump. Background Technique

[0002] Liquefied natural gas, abbreviated as LNG, mainly consists of methane and is recognized as the cleanest fossil energy on earth. After being mined, liquefied natural gas is generally stored in large LNG storage tanks or LNG ships. An LNG submersible pump is a power transmission device for transporting liquefied natural gas and related cryogenic liquids. Its installation position is restricted. If it is installed outside the bottom of the storage tank, the sealing effect of the LNG submersible pump is poor and the cold insulation is difficult. When the LNG storage tank transports liquefied natural gas, the liquefied natural gas will be vaporized, thus affecting the transportation of liquefied natural gas.

[0003] However, in the existing technology, a conventional LNG (liquefied natural gas) cryogenic storage tank usually transports cryogenic media by installing a submersible pump. The submersible pump is installed in the cryogenic environment inside the storage tank. Therefore, the base of the submersible pump must use low-temperature resistant materials such as stainless steel. However, it is rather troublesome to fixedly install the stainless steel between the LNG submersible pump and the tank body. It is not possible to first fixedly install between the mounting frame and the tank body and then install between the pump body and the mounting frame. In this way, only the body needs to be disassembled for later maintenance of the LNG submersible pump.

[0004] Therefore, we need a seal-less LNG submersible pump to solve the problem of the installation between the existing LNG submersible pump and the tank body, and it can also facilitate the disassembly of the LNG submersible pump. Content of the Utility Model

[0005] The purpose of the utility model is to provide a seal-less LNG submersible pump to solve the problem of the installation between the existing LNG submersible pump and the tank body as mentioned in the above background technique, and it can also facilitate the disassembly of the LNG submersible pump.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A seal-less LNG submersible pump includes a mounting bracket. An auxiliary bracket is fixedly connected to the inner surface of the support frame of the mounting bracket. Bolt holes are provided on the surface of the auxiliary bracket. A limit card slot is provided on the top surface of the support frame of the mounting bracket. A limit card plate is inserted into the surface of the limit card slot. The top surface of the limit card plate is fixedly connected to the bottom surface of the pump body mounting plate, and a submersible pump body is arranged on the top surface of the pump body mounting plate.

[0007] Preferably, the cross-section of the limit card slot is in a "convex" shape. The limit card slot does not completely penetrate the surface of the support frame of the mounting bracket, and the depth of the limit card slot is greater than the length dimension of the limit card plate.

[0008] Preferably, a groove is formed on the top surface of the pump body mounting plate. The groove is communicated with the arc-shaped through groove. An installation block is inserted on the surface of the groove. The end face of the installation block is integrally formed with the surface of the submersible pump body. The height dimension of the installation block is equal to the depth of the groove.

[0009] Preferably, the height dimension of the arc-shaped through groove is equal to the height dimension of the groove. The arc-shaped through groove is arranged as an arc-shaped groove. There are four arc-shaped through grooves, and the four arc-shaped through grooves are evenly distributed inside the pump body mounting plate.

[0010] Preferably, a through hole is formed on the surface of the support frame of the installation bracket. The surface of the through hole is movably connected to the surface of the limit insertion plate. The inner surface of the limit insertion plate abuts against the end face of the limit clamping plate. A spring jack is formed on the surface of the limit insertion plate, and a spring clip is inserted on the surface of the spring jack.

[0011] Preferably, a through hole is formed on the surface of the limit insertion plate. A convex block is integrally formed on the end face of the limit insertion plate. The length dimension of the limit insertion plate is greater than the depth of the through hole.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: By fixedly connecting an auxiliary bracket to the inner surface of the support frame of the installation bracket, and then arranging bolt holes on the surface of the auxiliary bracket, it is convenient to fix the bolts through the surface of the bolt holes on the LNG tank body. By arranging a limit card slot on the top surface of the support frame of the installation bracket and arranging the submersible pump body on the top surface of the pump body mounting plate, the submersible pump body can be stably installed on the top surface of the installation bracket. Therefore, a stable connection can be achieved between the submersible pump body and the LNG tank body. By arranging a groove on the top surface of the pump body mounting plate, communicating the groove with the arc-shaped through groove, inserting the surface of the installation block into the surface of the groove, and then integrally forming the end face of the installation block with the surface of the submersible pump body, when the submersible pump body is rotated on the top surface of the pump body mounting plate, the installation block is firmly clamped to the surface of the arc-shaped through groove. Therefore, the submersible pump body is stably installed on the top surface of the pump body mounting plate; Further, the problem of the installation between the existing LNG submersible pump and the tank body is solved, and the disassembly of the LNG submersible pump can also be realized conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is a three-dimensional schematic diagram of the installation bracket structure of the present utility model;

[0015] Figure 3 is a connection schematic diagram of the installation bracket and the pump body mounting plate;

[0016] Figure 4 is a connection schematic diagram of the submersible pump body and the installation block;

[0017] Figure 5 Schematic diagram of the connection between the limit insertion plate and the spring jack

[0018] In the figure: mounting bracket 1, pump body mounting plate 2, submersible pump body 3, groove 4, mounting block 5, limit card slot 6, limit card plate 7, through port 8, limit insertion plate 9, through hole 10, spring jack 11, spring clip 12, auxiliary bracket 13, bolt hole 14, arc-shaped through groove 15. Specific implementation mode

[0019] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0020] Embodiment 1

[0021] Please refer to Figures 1-5 , the present utility model provides a technical solution: a seal-less LNG submersible pump, including a mounting bracket 1. An auxiliary bracket 13 is fixedly connected to the inner surface of the support frame of the mounting bracket 1. A bolt hole 14 is provided on the surface of the auxiliary bracket 13. A limit card slot 6 is provided on the top surface of the support frame of the mounting bracket 1. A limit card plate 7 is inserted into the surface of the limit card slot 6. The top surface of the limit card plate 7 is fixedly connected to the bottom surface of the pump body mounting plate 2. The top surface of the pump body mounting plate 2 is provided with a submersible pump body 3. By fixedly connecting the auxiliary bracket 13 to the inner surface of the support frame of the mounting bracket 1, and then providing the bolt hole 14 on the surface of the auxiliary bracket 13, it is convenient to fix the bolt through the surface of the bolt hole 14 on the LNG tank body. By providing the limit card slot 6 on the top surface of the support frame of the mounting bracket 1, the surface of the limit card slot 6 is clamped with the limit card plate 7, and the top surface of the limit card plate 7 is fixedly connected to the bottom surface of the pump body mounting plate 2. The submersible pump body 3 is provided on the top surface of the pump body mounting plate 2, so that the submersible pump body 3 is stably installed on the top surface of the mounting bracket 1. Therefore, the submersible pump body 3 and the LNG tank body can be stably connected.

[0022] Embodiment 2

[0023] Referring to the attached Figures 1 to 5 , on the basis of Embodiment 1, in order to automatically cut the pipe body cut by the laser cutting machine body 10, a groove 4 is provided on the top surface of the pump body mounting plate 2. The groove 4 and the arc-shaped through groove 15 are communicated with each other. A mounting block 5 is inserted into the surface of the groove 4. The end face of the mounting block 5 is integrally formed with the surface of the submersible pump body 3. The height dimension of the mounting block 5 is equal to the depth of the groove 4;

[0024] By providing a groove 4 on the top surface of the pump body mounting plate 2, the groove 4 is communicated with the arc-shaped through groove 15. The surface of the groove 4 is inserted with the surface of the mounting block 5, and then the end face of the mounting block 5 is integrally formed with the surface of the submersible pump body 3. When the submersible pump body 3 is rotated on the top surface of the pump body mounting plate 2, the mounting block 5 is firmly clamped to the surface of the arc-shaped through groove 15. Therefore, the submersible pump body 3 is firmly mounted on the top surface of the pump body mounting plate 2. At the same time, when the submersible pump body 3 is rotated in the reverse direction, the mounting block 5 returns to the surface of the groove 4, and the submersible pump body 3 can be lifted upward to be detached from the top surface of the pump body mounting plate 2.

[0025] Embodiment III

[0026] Refer to the appendix Figures 1 to 5 , on the basis of Embodiment II, in order to limit the insertion block 7 inside the installation slot 6 by the limit stop 14, a through hole 8 is provided on the surface of the support frame of the installation bracket 1. The surface of the through hole 8 is movably connected to the surface of the limit insertion plate 9. The inner surface of the limit insertion plate 9 abuts against the end face of the limit card plate 7. A spring insertion hole 11 is provided on the surface of the limit insertion plate 9, and a spring clip 12 is inserted into the surface of the spring insertion hole 11;

[0027] By inserting the surface of the limit insertion plate 9 into the surface of the through hole 8, the limit insertion plate 9 limits the limit card plate 7 inside the limit slot 6. By providing a spring insertion hole 11 on the surface of the limit insertion plate 9 and inserting the surface of the spring clip 12 into the surface of the spring insertion hole 11, when the spring clip 12 is pulled out from the surface of the spring insertion hole 11, the limit insertion plate 9 can be pulled out of the surface of the through hole 8. Therefore, the pump body mounting plate 2 can be detached from the top surface of the support frame of the installation bracket 1.

[0028] In actual use, the auxiliary bracket 13 is fixedly connected to the inner surface of the support frame of the installation bracket 1, and then bolt holes 14 are provided on the surface of the auxiliary bracket 13, so as to facilitate fixing the bolts through the surface of the bolt holes 14 on the LNG tank body. By opening a limit card slot 6 on the top surface of the support frame of the installation bracket 1, the surface of the limit card slot 6 is clamped with a limit card plate 7, and the top surface of the limit card plate 7 is fixedly connected to the bottom surface of the pump body mounting plate 2. A submersible pump body 3 is arranged on the top surface of the pump body mounting plate 2, so that the submersible pump body 3 is stably installed on the top surface of the installation bracket 1. Therefore, a stable connection can be established between the submersible pump body 3 and the LNG tank body. By opening a groove 4 on the top surface of the pump body mounting plate 2, the groove 4 is communicated with the arc-shaped through groove 15. The surface of the groove 4 is inserted with the surface of the installation block 5, and then the end face of the installation block 5 is integrally formed with the surface of the submersible pump body 3. When the submersible pump body 3 is rotated on the top surface of the pump body mounting plate 2, the installation block 5 is stably clamped to the surface of the arc-shaped through groove 15. Therefore, the submersible pump body 3 is stably installed on the top surface of the pump body mounting plate 2. At the same time, when the submersible pump body 3 is rotated in the reverse direction, the installation block 5 returns to the surface of the groove 4. Lifting the submersible pump body 3 upward can detach it from the top surface of the pump body mounting plate 2. By inserting the surface of the limit insertion plate 9 into the surface of the through port 8, the limit insertion plate 9 plays a limiting role on the limit card plate 7 inside the limit card slot 6. By opening a spring insertion hole 11 on the surface of the limit insertion plate 9, the surface of the spring clip 12 is inserted into the surface of the spring insertion hole 11. When the spring clip 12 is pulled out from the surface of the spring insertion hole 11, the limit insertion plate 9 can be detached and pulled out from the surface of the through port 8. Therefore, the pump body mounting plate 2 can be detached from the top surface of the support frame of the installation bracket 1.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seal-less LNG submersible pump, comprising a mounting bracket (1), characterized in that: An auxiliary bracket (13) is fixedly connected to the inner surface of the support frame of the mounting bracket (1). Bolt holes (14) are formed on the surface of the auxiliary bracket (13). A limit card slot (6) is formed on the top surface of the support frame of the mounting bracket (1). A limit card plate (7) is inserted into the surface of the limit card slot (6). The top surface of the limit card plate (7) is fixedly connected to the bottom surface of the pump body mounting plate (2). A submersible pump body (3) is arranged on the top surface of the pump body mounting plate (2).

2. The submersible LNG pump without a seal according to claim 1, wherein: The cross-section of the limit card slot (6) is in a "convex" shape. The limit card slot (6) does not completely penetrate the surface of the support frame of the mounting bracket (1). The depth of the limit card slot (6) is greater than the length dimension of the limit card plate (7).

3. The submersible LNG pump without a seal according to claim 1, wherein: A groove (4) is formed on the top surface of the pump body mounting plate (2). The groove (4) is communicated with the arc-shaped through groove (15). An installation block (5) is inserted into the surface of the groove (4). The end face of the installation block (5) is integrally formed with the surface of the submersible pump body (3). The height dimension of the installation block (5) is equal to the depth of the groove (4).

4. The submersible LNG pump without a seal according to claim 3, characterized in that: The height dimension of the arc-shaped through groove (15) is equal to the height dimension of the groove (4). The arc-shaped through groove (15) is in the shape of an arc groove. There are four arc-shaped through grooves (15) arranged, and the four arc-shaped through grooves (15) are evenly distributed inside the pump body mounting plate (2).

5. A seal-less LNG submersible pump according to claim 1, characterized in that: A through opening (8) is formed on the surface of the support frame of the mounting bracket (1). The surface of the through opening (8) is movably connected to the surface of the limit insertion plate (9). The inner surface of the limit insertion plate (9) abuts against the end face of the limit card plate (7). A spring insertion hole (11) is formed on the surface of the limit insertion plate (9). A spring clip (12) is inserted into the surface of the spring insertion hole (11).

6. The submersed LNG pump without a seal according to claim 5, characterized in that: A through hole (10) is formed on the surface of the limit insertion plate (9). A convex block is integrally formed on the end face of the limit insertion plate (9). The length dimension of the limit insertion plate (9) is greater than the depth of the through opening (8).

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