LNG (Liquefied Natural Gas) liquid conveying pipeline with heating function

Abstract

The utility model discloses an LNG (Liquefied Natural Gas) liquid delivery pipeline with a heating function, which relates to the field of delivery pipelines and comprises a pipeline heater, the left end part and the right end part of the pipeline heater are respectively provided with a feed pipe and a discharge pipe, and the ports of the feed pipe and the discharge pipe are respectively and movably connected with a connecting pipe. The two concave notches formed in the outer walls of the first flange plate and the second flange plate are in butt joint, the threaded sleeve is subsequently twisted, the threaded sleeve is matched with the threaded grooves formed by splicing and formed in the outer rings of the first flange plate and the second flange plate, and then matching work of the feeding pipe and the connecting pipe is completed; and meanwhile, the discharging pipe and the connecting pipe are repeatedly operated to complete matching, in this way, the whole conveying pipe is assembled, LNG liquid in the conveying pipe is conveniently heated, the moving distance of the threaded sleeve is limited under the limitation of the limiting protruding block, the threaded sleeve does not move away from the position of the first flange plate, and it is guaranteed that the threaded sleeve and the first flange plate are stably connected.

Description

Technical Field

[0001] This utility model relates to the field of transportation pipelines, specifically to an LNG liquid transportation pipeline with heating function. Background Technology

[0002] LNG, or liquefied natural gas, is a type of natural gas produced by cooling to extremely low temperatures (approximately -162 degrees Celsius) under normal pressure. In this state, the volume of natural gas is greatly reduced, facilitating transportation and storage. Before use, LNG needs to be converted into a gaseous form through a heating and vaporization process for user convenience.

[0003] Most existing conveying pipelines consist of a pipeline heater and pipes connected to the pipeline heater via screws and flanges. This makes the connection between the pipeline heater and the connecting pipes cumbersome, and the connection process requires the use of external tools to twist the screws, making the installation and connection of the entire conveying pipeline quite complicated.

[0004] Therefore, it is necessary to invent LNG liquid transport pipelines with heating functions to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an LNG liquid transportation pipeline with heating function, in order to solve the problem mentioned in the background art that most existing transportation pipelines consist of a pipeline heater and a pipeline connected to the pipeline heater by screws and flanges. This makes the connection method between the pipeline heater and the connecting pipeline cumbersome, and the connection process requires the use of external tools to twist the screws, making the installation and connection of the entire transportation pipeline cumbersome.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an LNG liquid transportation pipeline with heating function, including a pipeline heater. The pipeline heater has an inlet pipe and an outlet pipe at its left and right ends, respectively. A connecting pipe is movably connected to the ports of both the inlet and outlet pipes. A flange is provided at the ports of both the inlet and outlet pipes, and a flange is provided at the port of the outlet pipe. Flange one and flange two are movably connected. A sealing ring is fixedly connected to the end of flange one, and the sealing ring matches a sealing mounting groove. The sealing mounting groove is located inside flange one. Both flange one and flange two have threaded grooves on their outer rings, and a threaded sleeve is threadedly connected to the outer ring of the threaded groove. The pipeline also includes:

[0007] The limiting movable component has an annular groove inside the flange, and an annular block is movably connected inside the annular groove. A limiting protrusion is fixedly connected to the outer wall of the annular block. The limiting protrusion moves inside the movable groove, and the movable groove is located inside the threaded sleeve.

[0008] Preferably, the pipeline heater, the inlet pipe, the outlet pipe, and the connecting pipe connecting the ends of the inlet pipe and the outlet pipe together form a conveying pipeline for conveying natural gas.

[0009] Preferably, the thickness of flange one and flange two is equal;

[0010] Both flange one and flange two have recessed grooves on their outer walls, and the openings of the two recessed grooves can fit together. This facilitates the alignment of the feed pipe and the discharge pipe with the corresponding connecting pipes, ensuring that the threaded grooves on the outer ring of flange one at the ends of the feed pipe and the discharge pipe match the threaded grooves on the outer ring of flange two at the ends of the connecting pipes. This also facilitates the matching of the threaded sleeve with the threaded grooves formed by splicing the outer rings of flange one and flange two.

[0011] Preferably, the inner ring of the threaded sleeve is provided with threads, and the threads of the inner ring of the threaded sleeve match the threaded groove.

[0012] The outer ring of the threaded sleeve is provided with a raised horizontal block, and the threaded sleeve can just cover flange one and flange two. The threaded connection is achieved by splicing the threaded sleeve with the outer ring of flange one and flange two to form a threaded groove, which ensures the connection between the connecting pipe and the feed pipe and the discharge pipe.

[0013] Preferably, the outer annular wall of the annular block is flush with the outer annular wall of the flange, and the outer wall of the annular block is in contact with and slidably connected to the inner wall of the annular groove.

[0014] Preferably, a set of two limiting protrusions are fixedly connected to the outer wall of the annular block with reference to the central axis of the feed pipe as the axis of symmetry, and the outer wall of the limiting protrusion is in contact with the inner wall of the movable groove to achieve a sliding connection. In this way, the movement distance of the threaded sleeve is limited under the restriction of the limiting protrusion, and the threaded sleeve will not move away from the flange.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This utility model assembles the entire conveying pipe by connecting two recessed grooves on the outer walls of flange one and flange two, then twisting the threaded sleeve to match the threaded groove formed by splicing the outer rings of flange one and flange two. After that, the feed pipe and connecting pipe are matched, and the discharge pipe and connecting pipe are matched by repeated operation. In this way, the entire conveying pipe is assembled, which facilitates the heating of LNG liquid in the conveying pipe. At the same time, the movement distance of the threaded sleeve is limited by the limiting protrusion, and the threaded sleeve will not move away from the flange, ensuring the stability of the connection between the threaded sleeve and flange one. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0019] Figure 2 This is an exploded view of the connecting pipe and the feed pipe of this utility model;

[0020] Figure 3 This is an exploded view of the connection structure between the feed pipe and the connecting pipe of this utility model;

[0021] Figure 4 This is an exploded view of the internal structure of the threaded sleeve of this utility model (partially cut out).

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Pipe heater; 2. Feed pipe; 201. Flange 1; 3. Discharge pipe; 4. Connecting pipe; 401. Flange 2; 5. Sealing ring; 6. Sealing mounting groove; 7. Threaded groove; 8. Threaded sleeve; 9. Limiting movable component; 901. Annular groove; 902. Annular block; 903. Limiting protrusion; 904. Movable groove. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1-4 The LNG liquid transport pipeline with heating function shown includes a pipeline heater 1. The left and right ends of the pipeline heater 1 are respectively provided with an inlet pipe 2 and an outlet pipe 3. A connecting pipe 4 is movably connected to the ports of both the inlet pipe 2 and the outlet pipe 3. A flange 201 is provided at the ports of both the inlet pipe 2 and the outlet pipe 3, and a flange 401 is provided at the port of the outlet pipe 3. Flange 201 and flange 401 are movably connected. A sealing ring 5 is fixedly connected to the end of flange 201, and the sealing ring 5 matches a sealing mounting groove 6. The sealing mounting groove 6 is located inside flange 201. Both flange 201 and flange 401 have threaded grooves 7 on their outer rings, and threaded sleeves 8 are threadedly connected to the outer rings of the threaded grooves 7. The pipeline also includes:

[0026] The limiting movable component 9 has an annular groove 901 inside the flange 201, and an annular block 902 is movably connected inside the annular groove 901. The outer wall of the annular block 902 is fixedly connected to a limiting protrusion 903. The limiting protrusion 903 moves inside the movable groove 904, and the movable groove 904 is located inside the threaded sleeve 8.

[0027] The pipeline heater 1, the feed pipe 2, the discharge pipe 3, and the connecting pipe 4 connecting the ends of the feed pipe 2 and the discharge pipe 3 together form a conveying pipeline for the conveying of natural gas.

[0028] Flange 1 201 and Flange 2 401 have the same thickness;

[0029] Both flange 201 and flange 401 have recessed grooves on their outer walls, and the openings of the two recessed grooves can fit together. This facilitates the alignment of the feed pipe 2 and the discharge pipe 3 with the corresponding connecting pipe 4, ensuring that the threaded groove 7 on the outer ring of flange 201 at the end of the feed pipe 2 and the discharge pipe 3 matches the threaded groove 7 on the outer ring of flange 401 at the end of the connecting pipe 4. This facilitates the matching of the threaded sleeve 8 with the threaded groove 7 formed by splicing the outer rings of flange 201 and flange 401.

[0030] The inner ring of the threaded sleeve 8 is threaded, and the thread of the inner ring of the threaded sleeve 8 matches the threaded groove 7.

[0031] The outer ring of the threaded sleeve 8 is provided with a raised horizontal block, and the threaded sleeve 8 can just cover the flange 201 and the flange 401. The threaded connection is achieved by splicing the threaded sleeve 8 with the outer ring of the flange 201 and the flange 401 to form a threaded groove 7, which ensures the connection between the connecting pipe 4 and the feed pipe 2 and the discharge pipe 3.

[0032] The outer annular wall of the annular block 902 is flush with the outer wall of the flange 201, and the outer wall of the annular block 902 is in contact with and slidably connected to the inner wall of the annular groove 901.

[0033] Two limiting protrusions 903 are fixedly connected to the outer wall of the annular block 902 with the central axis of the feed pipe 2 as the axis of symmetry. The outer wall of the limiting protrusion 903 is attached to the inner wall of the movable groove 904 to achieve a sliding connection. In this way, the movement distance of the threaded sleeve 8 is limited under the restriction of the limiting protrusion 903, and the threaded sleeve 8 will not move away from the flange 201.

[0034] Working Principle: When using an LNG liquid transportation pipeline with heating function, firstly, the multiple recessed grooves on the outer wall of flange 201 at the end of the inlet pipe 2 and outlet pipe 3, and flange 401 at the end of the connecting pipe 4 are aligned. Subsequently, the threaded sleeve 8 is twisted, and the threaded sleeve 8 is connected to the threaded groove 7 formed by splicing flange 201 and flange 401 to achieve threaded connection. This allows both inlet pipe 2 and outlet pipe 3 to be connected to the corresponding connecting pipe 4, completing the assembly of the entire transportation pipeline. This facilitates the heating of the LNG liquid in the transportation pipeline. At the same time, the sealing ring 5 fixedly connected to the end wall of flange 201 is connected to flange 4. The sealing mounting groove 6 inside 01 matches to ensure the sealing performance when the connecting pipe 4 is connected to the feed pipe 2 and the discharge pipe 3, ensuring that the natural gas is not leaked. At the same time, a limiting protrusion 903 is provided. The annular block 902, which is fixedly connected to the limiting protrusion 903, is movably connected to the flange 201. When the threaded sleeve 8 is twisted, the movable groove 904 inside the threaded sleeve 8 moves outside the limiting protrusion 903. Thus, under the restriction of the limiting protrusion 903 and the movable groove 904, the movement distance of the threaded sleeve 8 is limited, and the threaded sleeve 8 will not move away from the flange 201, ensuring the stability of the connection between the threaded sleeve 8 and the flange 201.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An LNG liquid transport pipeline with heating function, including a pipeline heater (1), characterized in that, The pipeline heater (1) is provided with an inlet pipe (2) and an outlet pipe (3) at its left and right ends, respectively. A connecting pipe (4) is movably connected to the ports of both the inlet pipe (2) and the outlet pipe (3). A flange (201) is provided at the port of both the inlet pipe (2) and the outlet pipe (3), and a flange (401) is provided at the port of the outlet pipe (3). The flange (201) and flange (401) are movably connected. A sealing ring (5) is fixedly connected to the end of flange (201), and the sealing ring (5) matches a sealing mounting groove (6). The sealing mounting groove (6) is located inside flange (201). A threaded groove (7) is provided on the outer ring of both flange (201) and flange (401), and a threaded sleeve (8) is threaded onto the outer ring of the threaded groove (7). The system also includes: The limiting movable component (9) has an annular groove (901) inside the flange (201), and an annular block (902) is movably connected inside the annular groove (901). The outer wall of the annular block (902) is fixedly connected to a limiting protrusion (903). The limiting protrusion (903) moves inside the movable groove (904), and the movable groove (904) is located inside the threaded sleeve (8).

2. The LNG liquid transportation pipeline with heating function according to claim 1, characterized in that, The pipeline heater (1), feed pipe (2), discharge pipe (3) and connecting pipe (4) connecting the ends of feed pipe (2) and discharge pipe (3) together form a conveying pipeline.

3. The LNG liquid transportation pipeline with heating function according to claim 1, characterized in that, The thicknesses of flange one (201) and flange two (401) are equal; The outer walls of both flange one (201) and flange two (401) are provided with recessed grooves, and the openings of the two recessed grooves can fit together.

4. The LNG liquid transportation pipeline with heating function according to claim 1, characterized in that, The inner ring of the threaded sleeve (8) is provided with threads, and the threads of the inner ring of the threaded sleeve (8) match the threaded groove (7); The outer ring of the threaded sleeve (8) is provided with a raised transverse block, and the threaded sleeve (8) can just cover the first flange (201) and the second flange (401).

5. The LNG liquid transportation pipeline with heating function according to claim 1, characterized in that, The outer annular wall of the annular block (902) is flush with the outer wall of the flange (201), and the outer wall of the annular block (902) is in contact with and slidably connected to the inner wall of the annular groove (901).

6. The LNG liquid transportation pipeline with heating function according to claim 1, characterized in that, Two limiting protrusions (903) are fixedly connected to the outer wall of the annular block (902) with the central axis of the feed pipe (2) as the axis of symmetry. The outer wall of the limiting protrusion (903) is attached to the inner wall of the movable groove (904) to achieve a sliding connection.

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