Low-temperature immersed pumping device

Abstract

The low-temperature immersed pumping device comprises a pump pool, a low-temperature immersed pump is arranged in the pump pool, and the top of the low-temperature immersed pump is connected with the pump pool through a connecting flange; a plurality of limiting rods are arranged on the outer surface of the low-temperature immersed pump in the axis direction of the low-temperature immersed pump, and the limiting rods extend in the radial direction of the low-temperature immersed pump. A plurality of limiting seats are further arranged in the pump pool, and the limiting seats are connected with the limiting rods in an inserted mode; compared with the prior art, stable support is constructed in the radial direction through cooperation of the multiple limiting rods arranged in the radial shape and the limiting base, so that axial swing of the low-temperature immersed pump is avoided, and the connection stability and reliability of the low-temperature immersed pump are guaranteed.

Description

Technical Field

[0001] This application relates to the field of cryogenic fluid transport equipment technology, specifically to a cryogenic submersible pumping device. Background Technology

[0002] A cryogenic submersible pump is a pump specifically designed for transporting and circulating extremely low-temperature liquids, typically liquefied gases such as liquid oxygen, liquid nitrogen, and liquefied natural gas. The motor and impeller of this type of pump are immersed in the cryogenic liquid, enabling it to operate efficiently in extremely low-temperature environments.

[0003] In the prior art, in order to reduce the impact of temperature on the cryogenic submersible pump, the cryogenic submersible pump is set in a pump pool. The top of the cryogenic submersible pump is connected to the pump pool through a connecting flange, while its bottom is suspended. When the cryogenic submersible pump is placed in an environment such as a liquefied natural gas ship, the free end of the cryogenic submersible pump will oscillate radially due to the swaying of the hull. Prolonged radial oscillation will cause the connection to loosen, resulting in poor connection stability of the equipment. Utility Model Content

[0004] The main objective of this application is to provide a cryogenic submersible pumping device, which aims to solve the defect of poor connection stability in the prior art.

[0005] This application achieves the above objectives through the following technical solutions:

[0006] A cryogenic submersible pumping device includes a pump tank;

[0007] A cryogenic submersible pump is disposed within a pump tank, with its top connected to the pump tank via a connecting flange. Around the axial direction of the cryogenic submersible pump, a plurality of limiting rods are provided on its outer surface, each limiting rod extending radially along the pump. A plurality of limiting seats are also provided within the pump tank, each limiting seat being inserted into and connected to one of the limiting rods.

[0008] Optionally, each of the limiting seats is provided with a reinforcing rib at its bottom, and the reinforcing rib is connected to the inner wall of the pump pool.

[0009] Optionally, a number of support blocks are integrally connected to the inner wall of the pump pool, and each of the limiting seats is provided with a plug hole adapted to the support block. A connecting bolt is also provided between the limiting seat and the support block.

[0010] Optionally, the limiting seat is provided with a plug groove adapted to the limiting rod, and the top of the limiting seat is open; the cryogenic submersible pump is provided with a plurality of connecting sleeves, and each of the limiting rods is threadedly connected to each of the connecting sleeves.

[0011] Optionally, the cryogenic submersible pump is provided with a plurality of plug-in sleeves, each plug-in sleeve having at least one rotation limiting groove, and each limiting rod being plugged into and connected to the plug-in sleeve; each limiting rod is provided with a rotation limiting strip adapted to the rotation limiting groove.

[0012] Optionally, the free end of the limiting rod is provided with a plurality of radial limiting pieces, and the insertion groove is provided with a plurality of radial slots, and each of the radial limiting pieces is respectively engaged and connected with each of the radial slots.

[0013] Optionally, each radial slot has an inclined guide surface at its inlet end, and each radial limiting piece also has a guide surface that matches the guide surface at its edge.

[0014] Optionally, the bottom of the cryogenic submersible pump is also provided with a ring-shaped support plate, and a number of through holes are provided on the support plate around its axis; the bottom of the pump pool is also provided with a limiting groove that is adapted to the support plate.

[0015] Optionally, a plurality of limiting posts are provided in the limiting slot, and a plurality of limiting holes are provided on the support plate, with each limiting post inserted into each limiting hole.

[0016] Optionally, the insertion end of the limiting hole is also provided with a guide cone surface with a conical structure.

[0017] Compared with the prior art, this application has the following beneficial effects:

[0018] This application includes a pump pool, in which a cryogenic submersible pump is installed. The top of the cryogenic submersible pump is connected to the pump pool via a connecting flange. Around the axial direction of the cryogenic submersible pump, a plurality of limiting rods are provided on the outer surface of the cryogenic submersible pump, and each limiting rod extends in the radial direction of the cryogenic submersible pump. A plurality of limiting seats are also provided in the pump pool, and each limiting seat is respectively inserted and connected to each of the limiting rods.

[0019] Compared with the prior art, this application constructs a stable support in the radial direction by cooperating with the limiting seat through multiple radially arranged limiting rods. When the entire pumping device shakes due to external conditions, the support provided by the limiting rods can effectively ensure the stability of the cryogenic submersible pump, thereby preventing it from axially swinging and ensuring the stability and reliability of its connection with the pump pool.

[0020] Secondly, this application achieves the above functions with a simple limiting rod, which effectively simplifies the structure of the entire device and improves the reliability and stability of the equipment. Attached Figure Description

[0021] Figure 1A schematic diagram of a cryogenic submersible pumping device provided in this application;

[0022] Figure 2 An exploded view of a cryogenic submersible pumping device provided in this application;

[0023] Figure 3 A cross-sectional view of a cryogenic submersible pumping device provided in this application;

[0024] Figure 4 This is a schematic diagram of the assembly of the limiting rod and the limiting seat;

[0025] Figure 5 A schematic diagram of another alternative embodiment of a cryogenic submersible pumping device provided in this application;

[0026] Reference numerals: 1-Pump pool, 2-Cryogenic submersible pump, 3-Limiting rod, 4-Limiting seat, 5-Reinforcing rib, 6-Support block, 7-Insertion hole, 8-Connecting bolt, 9-Insertion groove, 10-Connecting sleeve, 11-Insertion sleeve, 12-Rotary limiting groove, 13-Rotary limiting strip, 14-Radial limiting piece, 15-Radial slot, 16-Guide surface, 17-Guide surface, 18-Support plate, 19-Through hole, 20-Limiting slot, 21-Limiting stake, 22-Limiting hole, 23-Guide cone surface.

[0027] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] Implementation Method 1

[0033] Reference Figures 1 to 4 This embodiment is an optional embodiment of this application, which discloses a cryogenic submersible pumping device, including a pump pool 1 and a cryogenic submersible pump 2, wherein the top of the cryogenic submersible pump 2 is connected to the pump pool 1 through a connecting flange.

[0034] The pump pool 1 includes an inner cylinder and an outer cylinder that are nested together. Several support blocks 6 are provided on the inner wall of the inner cylinder, and each support block 6 has the same structure.

[0035] Around the axis of the inner cylinder, the support blocks 6 are evenly arranged, and the top surfaces of the support blocks 6 are flush. Simultaneously, a plurality of limiting seats 4 are also provided within the inner cylinder. Along the length of the limiting seat 4, one end of the limiting seat 4 facing the inner cylinder is the rear end face, and the other end is the front end face. An insertion hole 7 is provided on the rear end face of the limiting seat 4, and each support block 6 is inserted into the insertion hole 7, thereby achieving the connection between the support block 6 and the limiting seat 4. Mutual bolt holes are also provided between the limiting seat 4 and the support block 6, and connecting bolts 8 are installed in the bolt holes.

[0036] The above-mentioned structure not only enables the quick disassembly of the limit block, improving the maintenance efficiency of the equipment, but also allows for the quick replacement of different limit seats 4 to meet different usage requirements.

[0037] Furthermore, a insertion groove 9 is provided on the front end face of the limiting seat 4. The cross-section of the insertion groove 9 is arc-shaped or U-shaped, and the insertion groove 9 penetrates the top surface and the front end face of the limiting seat 4.

[0038] Around the axis of the cryogenic submersible pump 2, a plurality of connecting sleeves 10 are evenly arranged on the outer circumferential surface of the cryogenic submersible pump 2. Each connecting sleeve 10 is threadedly connected to a limiting rod 3. The axis of each limiting rod 3 is arranged in the radial direction, that is, the free end of the limiting rod 3 extends in the radial direction. Each limiting rod 3 corresponds to each limiting seat 4. The free end of each limiting rod 3 is inserted into the corresponding insertion groove 9 from the top opening of the limiting seat 4 along the axial direction.

[0039] The above structure allows each limiting rod 3 to be quickly inserted into the limiting seat 4 from the axial direction, thus minimizing the difficulty of equipment installation.

[0040] Furthermore, a plurality of radial limiting pieces 14 are provided at the free end of the limiting rod 3, and a plurality of radial slots 15 are provided in the insertion groove 9, and each of the radial limiting pieces 14 is inserted into each of the radial slots 15 for engagement.

[0041] Along the axial direction of the limiting rod 3, each of the radial limiting pieces 14 is tightly fitted with each of the radial slots 15, thereby achieving limiting in the radial direction, further improving the connection stability and reliability between the limiting rod 3 and the limiting seat 4, and thus further improving the radial limiting effect on the cryogenic submersible pump 2.

[0042] Furthermore, each radial slot 15 has an inclined guide surface 16 at its inlet end, and each radial limiting piece 14 has a guide surface 17 that matches the guide surface 16 at its edge. That is, the top of the radial slot 15 is enlarged by the guide surface 16, and the edge thickness of the radial limiting piece 14 is reduced by the guide surface 17, thereby reducing the difficulty of insertion between the radial limiting piece 14 and the radial slot 15 and reducing the assembly difficulty of the whole set of equipment.

[0043] Furthermore, refer to Figure 5As another feasible technical solution of this application, a plurality of plug-in sleeves 11 are evenly arranged on the outer surface of the cryogenic submersible pump 2 around its axis, and at least one rotation limiting groove 12 is provided on the inner wall of the plug-in sleeve 11. The rotation limiting groove 12 is arranged along the axis of the plug-in sleeve 11; at the same time, a rotation limiting strip 13 adapted to the rotation limiting groove 12 is also provided on each of the limiting rods 3.

[0044] In use, the limiting rod 3 is connected to the insert sleeve 11 by insertion, and the rotation of the limiting rod 3 is limited by the cooperation of the rotating limiting groove 12 and the rotating limiting strip 13 to ensure its stability.

[0045] Secondly, the above structure simplifies the assembly of the equipment.

[0046] Furthermore, a support plate 18 is provided at the bottom of the cryogenic submersible pump 2. The support plate 18 is generally in the form of a circular ring structure. Around the axis of the support plate 18, a plurality of through holes 19 are provided on the support plate 18. The fluid to be transported enters the inlet end of the cryogenic submersible pump 2 through the through holes 19.

[0047] A limiting slot 20 is also provided at the bottom of the pump pool 1. The limiting slot 20 is adapted to the support plate 18. During installation, the bottom of the support plate 18 is inserted into the limiting slot 20.

[0048] Furthermore, around the axis of the limiting slot 20, a plurality of limiting posts 21 are evenly arranged in the limiting slot 20, and a plurality of limiting holes 22 are also provided on the support plate 18, with each limiting post 21 and each limiting hole 22 correspondingly inserted and connected.

[0049] The cooperation between the limiting stake 21 and the limiting hole 22 can further achieve radial limiting of the bottom area of ​​the cryogenic submersible pump 2, which not only makes the cryogenic submersible pump 2 more stable, but also effectively reduces the pressure of the limiting rod 3.

[0050] Furthermore, the insertion end of the limiting hole 22 is also provided with a guide cone surface 23 with a conical structure. The guide cone surface 23 can enlarge the entrance end of the limiting hole 22, reducing the assembly difficulty of the equipment.

[0051] Compared with the prior art, this application constructs a stable support in the radial direction by cooperating with the limiting seat through multiple radially arranged limiting rods. When the entire pumping device shakes due to external conditions, the support provided by the limiting rods can effectively ensure the stability of the cryogenic submersible pump, thereby preventing it from axially swinging and ensuring the stability and reliability of its connection with the pump pool.

[0052] Secondly, this application achieves the above functions with a simple limiting rod, which effectively simplifies the structure of the entire device and improves the reliability and stability of the equipment.

[0053] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A cryogenic submersible pumping device, characterized in that, Including the pump pool (1); A cryogenic submersible pump (2) is disposed in the pump pool (1), and the top of the cryogenic submersible pump (2) is connected to the pump pool (1) through a connecting flange; around the axial direction of the cryogenic submersible pump (2), a plurality of limiting rods (3) are provided on the outer surface of the cryogenic submersible pump (2), and each of the limiting rods (3) extends in the radial direction of the cryogenic submersible pump (2); a plurality of limiting seats (4) are also provided in the pump pool (1), and each of the limiting seats (4) is inserted and connected to each of the limiting rods (3).

2. The cryogenic submersible pumping device according to claim 1, characterized in that, Each of the limiting seats (4) is provided with a reinforcing rib (5) at its bottom, and the reinforcing rib (5) is connected to the inner wall of the pump pool (1).

3. The cryogenic submersible pumping device according to claim 1, characterized in that, The inner wall of the pump pool (1) is integrally connected with several support blocks (6), and each of the limiting seats (4) is provided with a plug hole (7) that is adapted to the support block (6). A connecting bolt (8) is also provided between the limiting seat (4) and the support block (6).

4. A cryogenic submersible pumping device according to any one of claims 1 to 3, characterized in that, The limiting seat (4) is provided with a plug groove (9) adapted to the limiting rod (3), and the top of the limiting seat (4) is open; the cryogenic submersible pump (2) is provided with a plurality of connecting sleeves (10), and each of the limiting rods (3) is threadedly connected to each of the connecting sleeves (10).

5. A cryogenic submersible pumping device according to any one of claims 1 to 3, characterized in that, The cryogenic submersible pump (2) is provided with a plurality of plug-in sleeves (11), each plug-in sleeve (11) is provided with at least one rotation limiting groove (12), and each limiting rod (3) is plugged into and connected to the plug-in sleeve (11); each limiting rod (3) is provided with a rotation limiting strip (13) adapted to the rotation limiting groove (12).

6. The cryogenic submersible pumping device according to claim 4, characterized in that, The free end of the limiting rod (3) is provided with a plurality of radial limiting pieces (14), and the insertion groove (9) is provided with a plurality of radial slots (15), and each of the radial limiting pieces (14) is respectively engaged and connected with each of the radial slots (15).

7. A cryogenic submersible pumping device according to claim 6, characterized in that, Each radial slot (15) has an inclined guide surface (16) at its inlet end, and each radial limiting piece (14) also has a guide surface (17) that matches the guide surface (16) at its edge.

8. The cryogenic submersible pumping device according to claim 1, characterized in that, The bottom of the cryogenic submersible pump (2) is also provided with a ring-shaped support plate (18), and around the axis of the support plate (18), a number of through holes (19) are provided on the support plate (18); the bottom of the pump pool (1) is also provided with a limiting groove (20) adapted to the support plate (18).

9. A cryogenic submersible pumping device according to claim 8, characterized in that, The limiting slot (20) is provided with a plurality of limiting stakes (21), and the support plate (18) is provided with a plurality of limiting holes (22), and each of the limiting stakes (21) is inserted into each of the limiting holes (22).

10. A cryogenic submersible pumping device according to claim 9, characterized in that, The insertion end of the limiting hole (22) is also provided with a guide cone surface (23) with a conical structure.

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