LNG cryogenic flexible composite pipe

Abstract

The utility model discloses a LNG low temperature flexible composite pipeline, including the pipe body and two mounting sleeves, two mounting sleeves are respectively sleeved in the both ends of pipe body, the one end of two mounting sleeves is all communicated with the connector, the lateral wall of one connector is communicated with the connecting pipe, the inner wall of another connector is provided with the connecting groove of connecting pipe insertion, the outer surface of connecting pipe is equipped with the sealing washer. The utility model discloses, through set up the cooperation of pipe body, mounting sleeve, connector, connecting pipe, connecting groove, sealing washer, sealing pad, sliding block, positioning rod, connecting sleeve, fixed bolt, fixed plate and sliding rod etc. part, has realized the function of quick connection to multiple LNG low temperature flexible composite pipeline, has improved the connecting mode of pipeline in the prior art, when more convenient and fast to multiple pipeline connection, saves time and effort, improves the practicality and convenience of LNG low temperature flexible composite pipeline.

Description

Technical Field

[0001] This utility model relates to the field of flexible composite pipeline technology, and in particular to an LNG cryogenic flexible composite pipeline. Background Technology

[0002] LNG (liquefied natural gas) cryogenic flexible pipelines are one of the key pieces of equipment in the process of LNG extraction, transportation, and storage, and are known as the "blood vessels" of the LNG export system. In recent years, as LNG development has gradually shifted from nearshore to deep-sea areas, cryogenic flexible pipelines, as the core transportation equipment in the LNG export system, have ushered in a broader development prospect.

[0003] In existing technologies, traditional LNG cryogenic flexible composite pipelines are mostly connected by flanges and bolts. This connection method makes it difficult to align the bolt holes on the flanges. When connecting multiple LNG cryogenic flexible composite pipelines, a lot of time and effort is required to align the bolt holes, which reduces the practicality and convenience of LNG cryogenic flexible composite pipelines. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a cryogenic flexible composite pipeline for LNG.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an LNG cryogenic flexible composite pipeline, comprising a pipe body and two mounting sleeves, the two mounting sleeves being respectively fitted onto both ends of the pipe body, each mounting sleeve having a connector connected to the end furthest from the pipe body, one connector having a connecting pipe connected to its side wall, and the other connector having a connecting groove for insertion into the connecting pipe on its inner wall, a sealing ring being fitted onto the outer surface of the connecting pipe, a sealing gasket being fixedly installed at the end of the sealing ring near the connector, a slider being fixedly installed onto the outer surface of the connecting pipe, a connecting sleeve being fitted onto the outer surface of one mounting sleeve, a fixing bolt being threaded onto the outer surface of the connecting sleeve, and disassembly and assembly components being provided at both ends of the pipe body.

[0006] The outer surface of the sealing ring is provided with a groove that matches the slider, and the outer wall of the sealing ring is in close contact with the inner wall of the connecting groove. By setting the above components, the function of sealing the connection between the two tubes is realized.

[0007] A positioning rod is fixedly installed on the side wall of one of the connectors, and a positioning hole for inserting the positioning rod is opened through the side wall of the other connector. By setting the above components, the function of positioning the connection between the two connectors is realized.

[0008] A fixing plate is fixedly installed on the outer surface of the mounting sleeve with the connecting sleeve. A sliding rod is fixedly installed on the side wall of the fixing plate. The side wall of the connecting sleeve is inserted into the sliding rod. The outer wall of the connector with the positioning rod has a fixing hole for insertion into the fixing bolt. By setting the above components, the function of fixing the two connectors is realized.

[0009] The tube body consists of an inner core, an isolation layer, a filling layer, a reinforcing layer, an explosion-proof layer, and an outer shell from the inside out. The inner core is a metal corrugated pipe, the filling layer is made of thermoplastic polyurethane elastomer, the reinforcing layer is made of metal fiber, the explosion-proof layer is made of high-performance flexible fiber, and the outer shell is made of thermoplastic plastic. By setting the above components, the tube body's performance is improved.

[0010] The disassembly and assembly assembly includes a fixing tube, which is fixedly installed on the side wall inside the mounting sleeve of the connector. The inner walls at both ends of the tube are provided with fixing grooves for insertion into the fixing tube. The outer surface of the fixing tube is fitted with a sealing sleeve that fits tightly with the fixing groove. A limit block is fixedly installed on the outer surface of the fixing tube. The outer surface of the mounting sleeve is threaded with a mounting bolt. By setting the disassembly and assembly assembly, the function of quickly disassembling and assembling the connector is realized.

[0011] The inner walls of both the fixing groove and the sealing sleeve are provided with limiting grooves that are adapted to the limiting block. The mounting bolts penetrate the outer surface of the mounting sleeve and the pipe body and are inserted into the limiting block. By setting the above components, the function of fixing the connector is realized.

[0012] This utility model has the following beneficial effects: 1. Compared with existing technologies, this technology achieves rapid connection of multiple LNG cryogenic flexible composite pipelines through the coordination of components such as pipe body, mounting sleeve, connector, connecting pipe, connecting groove, sealing ring, sealing gasket, slider, positioning rod, connecting sleeve, fixing bolt, fixing plate, and sliding rod. This improves the connection method of existing pipelines, making it more convenient and faster to connect multiple pipelines, saving time and effort, and enhancing the practicality and convenience of LNG cryogenic flexible composite pipelines. Furthermore, the coordination of components such as inner core, isolation layer, filling layer, reinforcement layer, explosion-proof layer, and outer shell enhances the various performance characteristics of LNG cryogenic flexible composite pipelines and extends their service life.

[0013] 2. Compared with existing technologies, by setting up components such as fixed pipes, fixed grooves, sealing sleeves, limiting blocks and mounting bolts, the function of quick assembly and disassembly of the connector is realized. This improves the installation method of pipe connectors in existing technologies, allowing for quick assembly, disassembly and replacement of the connector, saving time and effort. On the basis of the original technology, the convenience of LNG cryogenic flexible composite pipeline is further improved. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the connector structure of this utility model; Figure 3 This is a schematic diagram of the connecting sleeve structure of this utility model; Figure 4 This is a schematic diagram of the inner core structure of this utility model; Figure 5 This is a schematic diagram of the disassembly and assembly components of this utility model.

[0015] Legend: 1. Pipe body; 2. Mounting sleeve; 3. Connector; 4. Connecting pipe; 5. Connecting groove; 6. Sealing ring; 7. Sealing gasket; 8. Slider; 9. Positioning rod; 10. Connecting sleeve; 11. Fixing bolt; 12. Fixing plate; 13. Slide rod; 14. Inner core; 15. Isolation layer; 16. Filling layer; 17. Reinforcing layer; 18. Explosion-proof layer; 19. Outer shell; 20. Fixing pipe; 21. Fixing groove; 22. Sealing sleeve; 23. Limiting block; 24. Mounting bolt. Detailed Implementation

[0016] 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.

[0017] Reference Figures 1 to 5This utility model provides an LNG cryogenic flexible composite pipeline, comprising a pipe body 1 and two mounting sleeves 2, which are respectively fitted onto both ends of the pipe body 1. Each mounting sleeve 2 has a connector 3 connected to its end furthest from the pipe body 1. A connecting pipe 4 is connected to the side wall of one connector 3, and a connecting groove 5 is formed on the inner wall of the other connector 3 for insertion into the connecting pipe 4. A sealing ring 6 is fitted onto the outer surface of the connecting pipe 4, and a sealing gasket 7 is fixedly installed at the end of the sealing ring 6 near the connector 3. A slider 8 is fixedly installed on the outer surface of the connecting pipe 4, and a groove adapted to the slider 8 is formed on the outer surface of the sealing ring 6. The outer wall of the sealing ring 6 is tightly attached to the inner wall of the connecting groove 5. A positioning rod 9 is fixedly installed on the side wall of one connector 3, and a positioning hole for insertion of the positioning rod 9 is opened through the side wall of the other connector 3. A connecting sleeve 10 is fitted on the outer surface of a mounting sleeve 2. A fixing bolt 11 is threadedly connected to the outer surface of the connecting sleeve 10. A fixing plate 12 is fixedly installed on the outer surface of the mounting sleeve 2 with the connecting sleeve 10. A sliding rod 13 is fixedly installed on the side wall of the fixing plate 12. The side wall of the connecting sleeve 10 is inserted into the sliding rod 13. A fixing hole for insertion of the fixing bolt 11 is opened on the outer wall of the connector 3 with the positioning rod 9.

[0018] To improve the performance of the tube body 1, the tube body 1 is composed of an inner core 14, an isolation layer 15, a filling layer 16, a reinforcing layer 17, an explosion-proof layer 18, and an outer shell 19 from the inside out. The inner core 14 is a metal corrugated pipe, the filling layer 16 is made of thermoplastic polyurethane elastomer, the reinforcing layer 17 is made of metal fiber, the explosion-proof layer 18 is made of high-performance flexible fiber, and the outer shell 19 is made of thermoplastic plastic.

[0019] By incorporating pipe body 1, mounting sleeve 2, connector 3, connecting pipe 4, connecting groove 5, sealing ring 6, sealing gasket 7, slider 8, positioning rod 9, connecting sleeve 10, fixing bolt 11, fixing plate 12, and sliding rod 13, the system enables rapid connection of multiple LNG cryogenic flexible composite pipelines. This improves upon existing pipeline connection methods, making the connection of multiple pipelines more convenient and efficient, saving time and effort, and enhancing the practicality and convenience of the LNG cryogenic flexible composite pipeline. Furthermore, by incorporating inner core 14, isolation layer 15, filling layer 16, reinforcing layer 17, explosion-proof layer 18, and outer shell 19, the system improves the various performance characteristics and extends the service life of the LNG cryogenic flexible composite pipeline.

[0020] Both ends of the pipe body 1 are equipped with disassembly and assembly components, including a fixing pipe 20. The fixing pipe 20 is fixedly installed on the side wall inside the connector 3 and the mounting sleeve 2. The inner walls of both ends of the pipe body 1 are provided with fixing grooves 21 for insertion into the fixing pipe 20. The outer surface of the fixing pipe 20 is fitted with a sealing sleeve 22 that fits tightly with the fixing groove 21. A limit block 23 is fixedly installed on the outer surface of the fixing pipe 20. The inner walls of the fixing groove 21 and the sealing sleeve 22 are provided with limit grooves that are adapted to the limit block 23. The outer surface of the mounting sleeve 2 is threaded with a mounting bolt 24. The mounting bolt 24 passes through the outer surface of the mounting sleeve 2 and the pipe body 1 and is inserted into the limit block 23.

[0021] By setting up a fixed pipe 20, a fixed groove 21, a sealing sleeve 22, a limiting block 23, and mounting bolts 24, the function of quickly assembling and disassembling the connector 3 is realized, which improves the installation method of the pipe connector 3 in the existing technology, so that the connector 3 can be quickly disassembled and replaced, saving time and effort. On the basis of the original, the convenience of LNG cryogenic flexible composite pipeline is further improved.

[0022] Working principle: When assembling the LNG cryogenic flexible composite pipeline, take out two matching connectors 3. First, put the two sealing sleeves 22 onto the outer surface of the fixing pipe 20 on the side wall of the two connectors 3 respectively. Then, bring one connector 3 close to one end of the pipe body 1 so that the fixing pipe 20 is aligned with the fixing groove 21. Move the connector 3 so that the fixing pipe 20 drives the sealing sleeve 22 to slide into the fixing groove 21. The limiting block 23 slides inside the limiting groove. When the pipe body 1 contacts the side wall of the connector 3, tighten the mounting bolt 24 on the outer wall of the mounting sleeve 2 so that the mounting bolt 24 passes through the outer wall of the mounting sleeve 2 and the pipe body 1 and is screwed into the inside of the limiting block 23. Then, fix the mounting sleeve 2 and complete the installation of the connector 3. Repeat the above operation to install the other connector 3 to the other end of the pipe body 1 to complete the assembly of the LNG cryogenic flexible composite pipeline.

[0023] When connecting multiple LNG cryogenic flexible composite pipes, first, the sealing ring 6 is fitted onto the outer surface of the connecting pipe 4, causing the slider 8 to slide into the groove and the sealing gasket 7 to adhere to the side wall of the connector 3. Then, the two LNG cryogenic flexible composite pipes are brought closer together, so that the connector 3 on one pipe body 1 with the connecting sleeve 10 is close to the connector 3 on the other pipe body 1 without the connecting sleeve 10. This aligns the connecting pipe 4 with the connecting groove 5 and the positioning rod 9 with the positioning hole. Moving the two pipe bodies 1 causes the connecting pipe 4 to slide the sealing ring 6 into the connecting groove 5. When the positioning rod 9 is inserted into the positioning hole, and the two connectors 3 come into contact with each other, the connecting sleeve 10 is pulled so that the connecting sleeve 10 slides on the outer surface of the slide rod 13. When the connecting sleeve 10 is fitted onto the outer surface of the two connectors 3, the fixing bolt 11 on the outer surface of the connecting sleeve 10 is turned so that the fixing bolt 11 passes through the outer surface of the connecting sleeve 10 and is screwed into the inside of the fixing hole, thereby fixing the two connectors 3 and completing the connection of the two LNG cryogenic flexible composite pipes. By repeating the above operation, multiple LNG cryogenic flexible composite pipes can be connected.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An LNG cryogenic flexible composite pipeline, comprising a pipe body (1) and two mounting sleeves (2), characterized in that: Two mounting sleeves (2) are respectively fitted onto both ends of the tube body (1). The ends of the two mounting sleeves (2) away from the tube body (1) are connected to connectors (3). The side wall of one connector (3) is connected to a connecting tube (4). The inner wall of the other connector (3) is provided with a connecting groove (5) for insertion into the connecting tube (4). A sealing ring (6) is fitted onto the outer surface of the connecting tube (4). A sealing gasket (7) is fixedly installed on the end of the sealing ring (6) near the connector (3). A slider (8) is fixedly installed on the outer surface of the connecting tube (4). A connecting sleeve (10) is fitted onto the outer surface of one mounting sleeve (2). A fixing bolt (11) is threaded onto the outer surface of the connecting sleeve (10). Both ends of the tube body (1) are provided with disassembly and assembly components.

2. The LNG cryogenic flexible composite pipeline according to claim 1, characterized in that: The outer surface of the sealing ring (6) is provided with a sliding groove that is compatible with the slider (8), and the outer wall of the sealing ring (6) is in close contact with the inner wall of the connecting groove (5).

3. The LNG cryogenic flexible composite pipeline according to claim 1, characterized in that: A positioning rod (9) is fixedly installed on the side wall of one of the connectors (3), and a positioning hole for insertion of the positioning rod (9) is opened through the side wall of the other connector (3).

4. The LNG cryogenic flexible composite pipeline according to claim 3, characterized in that: A fixing plate (12) is fixedly installed on the outer surface of the mounting sleeve (2) equipped with the connecting sleeve (10). A sliding rod (13) is fixedly installed on the side wall of the fixing plate (12). The side wall of the connecting sleeve (10) is inserted into the sliding rod (13). The outer wall of the connector (3) equipped with the positioning rod (9) has a fixing hole for insertion into the fixing bolt (11).

5. The LNG cryogenic flexible composite pipeline according to claim 1, characterized in that: The tube body (1) consists of an inner core (14), an isolation layer (15), a filling layer (16), a reinforcing layer (17), an explosion-proof layer (18), and an outer shell (19) from the inside out. The inner core (14) is a metal corrugated pipe, the filling layer (16) is made of thermoplastic polyurethane elastomer, the reinforcing layer (17) is made of metal fiber, the explosion-proof layer (18) is made of high-performance flexible fiber, and the outer shell (19) is made of thermoplastic plastic.

6. The LNG cryogenic flexible composite pipeline according to claim 1, characterized in that: The assembly and disassembly assembly includes a fixing tube (20), which is fixedly installed on the side wall inside the connector (3) and the mounting sleeve (2). The inner walls at both ends of the tube body (1) are provided with fixing grooves (21) for insertion into the fixing tube (20). The outer surface of the fixing tube (20) is fitted with a sealing sleeve (22) that fits tightly against the fixing groove (21). A limit block (23) is fixedly installed on the outer surface of the fixing tube (20). The outer surface of the mounting sleeve (2) is threaded with a mounting bolt (24).

7. The LNG cryogenic flexible composite pipeline according to claim 6, characterized in that: The inner walls of the fixing groove (21) and the sealing sleeve (22) are provided with limiting grooves that are compatible with the limiting block (23). The mounting bolt (24) passes through the outer surface of the mounting sleeve (2) and the tube body (1) and is inserted into the limiting block (23).

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