Immersed pump for LNG (Liquefied Natural Gas) filling station

Abstract

The utility model relates to the technical field of connection, and discloses an immersed pump for an LNG (Liquefied Natural Gas) filling station. The liquid inlet pipe is arranged at the bottom of the pump body; the liquid outlet pipe is arranged at the top of the pump body, and a first connecting groove is formed in the top of the liquid outlet pipe; the sealing connection mechanism is arranged at the top of the liquid outlet pipe; a communicating pipe is aligned to a first movable groove, a second connecting pipe and a first connecting pipe are aligned to rotate, the second connecting pipe and the first connecting pipe are in threaded connection, meanwhile, the communicating pipe is driven to move, the communicating pipe extrudes a first sealing ball when moving into a fixed pipe, and the second connecting pipe and the second connecting pipe are in threaded connection. Meanwhile, the communicating pipe is squeezed through a second connecting spring and a second sealing ball to be balanced, liquid enters the communicating pipe through a liquid inlet groove in one end of the communicating pipe and then flows out through a liquid inlet groove in the other end of the communicating pipe, and therefore the effect that the liquid outlet pipe and the liquid drainage pipe can be conveniently communicated is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of connection, in particular to a submersible pump for an LNG filling station. Background Art

[0002] The submersible pump used in LNG filling stations is a pump specially designed to handle liquefied natural gas in a low-temperature environment. This pump is usually installed at the bottom of the LNG storage tank so that LNG can be extracted from the tank and transported to the gas dispenser or other equipment.

[0003] However, the existing products still have some shortcomings. For example, the existing products cannot easily connect the liquid outlet pipe with the liquid discharge pipe. If they are to be disassembled and replaced, a large amount of manpower is required to replace them, which reduces work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a submersible pump for an LNG filling station, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a submersible pump for an LNG filling station, comprising: a pump body; a liquid inlet pipe, arranged at the bottom of the pump body; a liquid outlet pipe, arranged at the top of the pump body, a connecting groove 1 being provided at the top of the liquid outlet pipe; a sealing connection mechanism, arranged at the top of the liquid outlet pipe; and a movable connection mechanism, arranged at the top of the sealing connection mechanism.

[0006] Preferably, the bottom of the pump body is fixedly connected to the top of the liquid inlet pipe, and the top of the pump body is fixedly connected to the bottom of the liquid outlet pipe.

[0007] Preferably, the sealing connection mechanism includes: a connecting spring 1, which is arranged at the bottom of a connecting groove 1 opened in the liquid outlet pipe; one end of the connecting spring 1 is fixedly connected to the bottom of the connecting groove 1, and the other end of the connecting spring 1 is fixedly connected to a sealing ball 1.

[0008] Preferably, the sealing connection mechanism includes: a fixed tube, which is sleeved on one end of the liquid outlet pipe; the inner wall of the fixed tube is fixedly connected to the outer wall of one end of the liquid outlet pipe, the top of the fixed tube is fixedly connected to a connector, and the outer wall of the fixed tube is fixedly connected to a connecting ring.

[0009] Preferably, a movable groove is provided on the top of the connector, a connecting tube is rotatably connected to the outer wall of the connecting ring, a threaded groove is provided on the inner wall of the connecting tube, and the sealing connection mechanism can effectively seal the liquid outlet pipe.

[0010] Preferably, the movable connection mechanism includes: connecting tube 2, which is arranged on the inner wall of connecting tube 1, and the outer wall of connecting tube 2 is provided with thread groove 2; the thread groove 2 provided on connecting tube 2 is threadedly connected with the thread groove 1 provided on the inner wall of connecting tube 1, the inner wall of connecting tube 2 is fixedly connected with a limiting plate, and the inner wall of connecting tube 2 is fixedly connected with a drain pipe.

[0011] Preferably, a second movable groove is formed at the top of the limiting plate, and a second connecting groove is formed at the bottom of the drain pipe.

[0012] Preferably, a connecting tube is slidably connected in the movable groove 2 opened by the limit plate, and both ends of the connecting tube are opened into the liquid tank. The connecting tube is adapted to the movable groove 1 opened by the connector, and a limiting ring is fixedly provided on one end of the connecting tube, and a rubber sealing ring is fixedly provided on the outer wall of the connecting tube. A connecting spring 2 is fixedly connected to the top of the connecting groove 2 opened by the drain pipe, and a sealing ball 2 is fixedly connected to one end of the connecting spring 2. Through the movable connection mechanism, the effect of facilitating the connection between the liquid outlet pipe and the drain pipe can be well achieved.

[0013] The utility model provides a submersible pump for LNG filling station, which has the following beneficial effects:

[0014] (1) The utility model connects the liquid outlet pipe to the fixed pipe so that the connector reduces the pressure on the sealing ball. When the sealing ball is squeezed, the connecting spring moves, so that the connecting spring reacts with the sealing ball, so that the sealing ball blocks the movable groove of the connector, thereby achieving the effect of sealing the liquid outlet pipe.

[0015] (2) The utility model aligns the connecting tube with the movable groove 1, and then aligns the connecting tube 2 with the connecting tube 1 and rotates it, so that the connecting tube 2 and the connecting tube 1 are threadedly connected, and at the same time drives the connecting tube to move. When the connecting tube moves into the fixed tube, it squeezes the sealing ball 1. At the same time, the connecting spring 2 and the sealing ball 2 squeeze the connecting tube to make the connecting tube reach balance, so that the liquid enters the connecting tube through the liquid inlet groove at one end of the connecting tube, and then flows out through the liquid inlet groove at the other end of the connecting tube, thereby achieving the effect of facilitating the connection between the liquid outlet pipe and the liquid discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 A magnified view of center A;

[0019] Figure 4 For this utility model Figure 2 Magnified view of B.

[0020] In the figure: 1 pump body, 2 liquid inlet pipe, 3 liquid outlet pipe, 4 sealing connection mechanism, 411 connecting spring 1, 412 sealing ball 1, 413 fixed pipe, 414 connecting body, 415 connecting ring, 416 connecting pipe 1, 5 movable connection mechanism, 511 connecting pipe 2, 512 limiting plate, 513 connecting pipe, 514 limiting ring, 515 rubber sealing ring, 516 liquid discharge pipe, 517 connecting spring 2, 518 sealing ball 2. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. Example 1

[0023] A preferred embodiment of a submersible pump for an LNG filling station provided by the utility model is as follows: Figure 1-4 As shown: a submersible pump for an LNG filling station, comprising: a pump body 1; a liquid inlet pipe 2, arranged at the bottom of the pump body 1; a liquid outlet pipe 3, arranged at the top of the pump body 1, and a connecting groove 1 is opened on the top of the liquid outlet pipe 3; a sealing connection mechanism 4, arranged at the top of the liquid outlet pipe 3; and a movable connection mechanism 5, arranged at the top of the sealing connection mechanism 4.

[0024] The bottom of the pump body 1 is fixedly connected to the top of the liquid inlet pipe 2 , and the top of the pump body 1 is fixedly connected to the bottom of the liquid outlet pipe 3 .

[0025] The sealing connection mechanism 4 includes: a connection spring 411, which is arranged at the bottom of a connection groove 1 opened in the liquid outlet pipe 3; one end of the connection spring 411 is fixedly connected to the bottom of the connection groove 1, and the other end of the connection spring 411 is fixedly connected to a sealing ball 412.

[0026] The sealing connection mechanism 4 includes: a fixed tube 413, which is sleeved on one end of the liquid outlet tube 3; the inner wall of the fixed tube 413 is fixedly connected to the outer wall of one end of the liquid outlet tube 3, the top of the fixed tube 413 is fixedly connected to a connector 414, and the outer wall of the fixed tube 413 is fixedly connected to a connecting ring 415.

[0027] A movable groove 1 is formed on the top of the connecting body 414 , and a connecting pipe 1 416 is rotatably connected to the outer wall of the connecting ring 415 , and a threaded groove 1 is formed on the inner wall of the connecting pipe 1 416 .

[0028] Furthermore, in this embodiment, the liquid outlet pipe 3 is fixedly connected to the fixed pipe 413, so that the connector 414 reduces the compression of the sealing ball 412. At the same time, when the sealing ball 412 is squeezed, the connecting spring 411 is driven to move, so that the connecting spring 411 reacts with the sealing ball 412, so that the sealing ball 412 blocks the movable groove 1 provided in the connector 414, thereby achieving the effect of sealing the liquid outlet pipe 3. Example 2

[0029] Based on Example 1, a preferred embodiment of a submersible pump for an LNG filling station provided by the utility model is as follows: Figure 1-4 As shown: the movable connection mechanism 5 includes: a connecting tube 2 511, which is arranged on the inner wall of the connecting tube 1 416, and a thread groove 2 is provided on the outer wall of the connecting tube 2 511; the thread groove 2 provided in the connecting tube 2 511 is threadedly connected with the thread groove 1 provided on the inner wall of the connecting tube 1 416, the inner wall of the connecting tube 2 511 is fixedly connected with a limiting plate 512, and the inner wall of the connecting tube 2 511 is fixedly connected with a drain pipe 516.

[0030] A second movable groove is formed at the top of the limiting plate 512 , and a second connecting groove is formed at the bottom of the drain pipe 516 .

[0031] A connecting tube 513 is slidably connected in the movable groove 2 opened by the limit plate 512, and both ends of the connecting tube 513 are opened into the liquid tank. The connecting tube 513 is adapted to the movable groove 1 opened by the connector 414, and one end of the connecting tube 513 is fixedly sleeved with a limit ring 514, and the outer wall of the connecting tube 513 is fixedly sleeved with a rubber sealing ring 515. The top of the connecting groove 2 opened by the drain pipe 516 is fixedly connected with a connecting spring 2 517, and one end of the connecting spring 2 517 is fixedly connected with a sealing ball 2 518.

[0032] Furthermore, in this embodiment, the connecting tube 513 is aligned with the movable groove 1, so that the connecting tube 2 511 is threadedly connected with the connecting tube 1 416, and the connecting tube 513 is driven to move at the same time. When the connecting tube 513 moves into the fixed tube 413, the sealing ball 1 412 is squeezed, and at the same time, the connecting spring 2 517 and the sealing ball 2 518 squeeze the connecting tube 513 to make the connecting tube 513 reach balance, so that the liquid enters the connecting tube 513 through the liquid inlet groove at one end of the connecting tube 513, and then flows out through the liquid inlet groove at the other end of the connecting tube 513, thereby achieving the effect of facilitating the connection between the liquid outlet pipe 3 and the discharge pipe 516.

[0033] When in use, by fixedly connecting the liquid outlet pipe 3 with the fixed pipe 413, the connecting body 414 reduces the pressure on the sealing ball 412. At the same time, when the sealing ball 412 is squeezed, the connecting spring 411 is driven to move, so that the connecting spring 411 reacts with the sealing ball 412, so that the sealing ball 412 blocks the movable groove 1 provided in the connecting body 414, so as to seal the liquid outlet pipe 3. By aligning the connecting pipe 513 with the movable groove 1, and then aligning the connecting pipe 2 511 with the connecting pipe 1 416 and rotating it, the connecting pipe 2 511 is threadedly connected with the connecting tube 1 416, and at the same time drives the connecting tube 513 to move. When the connecting tube 513 moves into the fixed tube 413, the sealing ball 1 412 is squeezed. At the same time, the connecting spring 2 517 and the sealing ball 2 518 squeeze the connecting tube 513 to make the connecting tube 513 reach balance, so that the liquid enters the connecting tube 513 through the liquid inlet groove at one end of the connecting tube 513, and then flows out through the liquid inlet groove at the other end of the connecting tube 513, thereby achieving the connection between the liquid outlet pipe 3 and the discharge pipe 516.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A submersible pump for an LNG filling station, characterized in that: include: Pump body (1); A liquid inlet pipe (2) is arranged at the bottom of the pump body (1); A liquid outlet pipe (3) is arranged at the top of the pump body (1), and a connecting groove 1 is provided at the top of the liquid outlet pipe (3); A sealing connection mechanism (4) is arranged on the top of the liquid outlet pipe (3); The movable connection mechanism (5) is arranged on the top of the sealing connection mechanism (4).

2. The submersible pump for an LNG filling station according to claim 1, characterized in that: The bottom of the pump body (1) is fixedly connected to the top of the liquid inlet pipe (2), and the top of the pump body (1) is fixedly connected to the bottom of the liquid outlet pipe (3).

3. The submersible pump for an LNG filling station according to claim 1, characterized in that: The sealing connection mechanism (4) comprises: A connecting spring 1 (411) is arranged at the bottom of a connecting groove 1 opened in the liquid outlet pipe (3); One end of the connection spring 1 (411) is fixedly connected to the bottom of the connection groove 1, and the other end of the connection spring 1 (411) is fixedly connected to a sealing ball 1 (412).

4. The submersible pump for an LNG filling station according to claim 1, characterized in that: The sealing connection mechanism (4) comprises: A fixed tube (413) sleeved on one end of the liquid outlet tube (3); The inner wall of the fixed tube (413) is fixedly connected to the outer wall of one end of the liquid outlet tube (3); the top of the fixed tube (413) is fixedly connected to a connector (414); and the outer wall of the fixed tube (413) is fixedly connected to a connecting ring (415).

5. The submersible pump for LNG filling station according to claim 4, characterized in that: A movable groove (1) is provided on the top of the connecting body (414); a connecting tube (416) is rotatably connected to the outer wall of the connecting ring (415); and a threaded groove (1) is provided on the inner wall of the connecting tube (416).

6. The submersible pump for an LNG filling station according to claim 1, characterized in that: The movable connection mechanism (5) comprises: The second connecting pipe (511) is arranged on the inner wall of the first connecting pipe (416), and the outer wall of the second connecting pipe (511) is provided with a second thread groove; The second thread groove provided on the second connecting pipe (511) is threadedly connected to the first thread groove provided on the inner wall of the first connecting pipe (416); the inner wall of the second connecting pipe (511) is fixedly connected to a limiting plate (512); and the inner wall of the second connecting pipe (511) is fixedly connected to a drainage pipe (516).

7. The submersible pump for an LNG filling station according to claim 6, characterized in that: A second movable groove is formed at the top of the limiting plate (512), and a second connecting groove is formed at the bottom of the drainage pipe (516).

8. The submersible pump for an LNG filling station according to claim 7, characterized in that: A connecting tube (513) is slidably connected in the movable groove 2 opened in the limit plate (512), and both ends of the connecting tube (513) are opened into the liquid tank. The connecting tube (513) is adapted to the movable groove 1 opened in the connector (414). A limiting ring (514) is fixedly sleeved on one end of the connecting tube (513), and a rubber sealing ring (515) is fixedly sleeved on the outer wall of the connecting tube (513). A connecting spring 2 (517) is fixedly connected to the top of the connecting groove 2 opened in the drain pipe (516), and a sealing ball 2 (518) is fixedly connected to one end of the connecting spring 2 (517).

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