Modularized rapid assembly structure for pressurizing inner pipe of LNG vehicle-mounted gas cylinder

Abstract

The utility model discloses an LNG vehicle-mounted gas cylinder pressurization inner pipe modularization rapid assembling structure, and relates to the LNG vehicle-mounted gas cylinder technology field, the LNG vehicle-mounted gas cylinder pressurization inner pipe modularization rapid assembling structure comprises an LNG vehicle-mounted gas cylinder main body, the upper end of the LNG vehicle-mounted gas cylinder main body is fixedly connected with an external pipe, the side wall of the external pipe is fixedly connected with a connecting pipe, and the connecting pipe is fixedly connected with a gas inlet pipe. A first pressurizing inner pipe connected through a clamping assembly is arranged in the connecting pipe, a locking assembly used for the first pressurizing inner pipe is arranged on the outer wall of the connecting pipe, clamping rings on a sliding plate are close to each other, an annular clamping groove in the outer wall of the first pressurizing inner pipe is clamped, the installation work of the first pressurizing inner pipe is achieved, and the clamping assembly is arranged on the outer wall of the connecting pipe. The first pressurizing inner pipe is ensured not to loosen or fall off in the connecting pipe due to vibration or external force, the stability of the whole connecting structure is enhanced, the mounting and dismounting processes are simpler, more convenient and faster, the maintenance efficiency and the operation convenience are improved, all the assemblies can be independently dismounted and replaced, and large-scale dismounting of the whole system is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to water railway signal equipment emergency box technical field, concretely is a kind of LNG vehicle-mounted gas cylinder pressurizing inner tube modularization quick assembly structure. BACKGROUND

[0002] In LNG vehicle-mounted gas cylinder system, pressurizing inner tube as key component, undertakes the important task of extracting LNG gas from cylinder and pressurizing delivery to use end.

[0003] The one end of the existing LNG vehicle-mounted gas cylinder pressurizing inner tube is usually connected to the inside of the LNG vehicle-mounted gas cylinder, especially connected to the LNG liquid or gas phase space in the cylinder, and the other end of the pressurizing inner tube is connected to a vaporizer or a special pressurizing device. The function of the vaporizer is to convert LNG liquid into gas, and the pressurizing device may include a series of valves, pipelines and controllers for adjusting and controlling the pressure and flow of the gas.

[0004] The traditional pressurizing inner tube usually uses a whole pipe, which needs to be replaced as a whole when damaged. When the parts need to be repaired or replaced, the traditional connection method often needs to disassemble the whole system, which reduces the maintenance efficiency, and the sealing performance is poor during installation. It needs the help of staff to support, and under the action of vibration or external force, it is easy to loosen or fall off, which affects the normal operation of the cylinder system.

[0005] Therefore, in view of the above problems, the existing structure is improved, and a LNG vehicle-mounted gas cylinder pressurizing inner tube modularization quick assembly structure is proposed. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a LNG vehicle-mounted gas cylinder pressurizing inner tube modularization quick assembly structure to solve the problems of the traditional pressurizing inner tube usually using a whole pipe, which needs to be replaced as a whole when damaged. When the parts need to be repaired or replaced, the traditional connection method often needs to disassemble the whole system, which reduces the maintenance efficiency, and the sealing performance is poor during installation. It needs the help of staff to support, and under the action of vibration or external force, it is easy to loosen or fall off, which affects the normal operation of the cylinder system.

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a LNG vehicle-mounted gas cylinder pressurizing inner tube modularization quick assembly structure, including LNG vehicle-mounted gas cylinder main part, the upper end of LNG vehicle-mounted gas cylinder main part is fixedly connected with outer connection pipe, the side wall of outer connection pipe is fixedly connected with connecting pipe, the inside of connecting pipe is provided with first pressurizing inner tube connected through clamping assembly, the outer wall of connecting pipe is provided with locking assembly for first pressurizing inner tube;

[0008] The end of the first pressurizing inner pipe is provided with a third pressurizing inner pipe connected through a flange assembly, and the upper end of the LNG vehicle-mounted gas cylinder body is provided with a support assembly for mounting the third pressurizing inner pipe.

[0009] Further, the clamping assembly comprises a limiting ring fixedly connected to the inner wall of the connecting pipe, four groups of positioning rods are fixedly connected to the inner wall of the limiting ring, and the first pressurizing inner pipe is located on the inner wall of the connecting pipe and is attached to one side of the limiting ring.

[0010] Further, the first pressurizing inner pipe is fixedly connected to the first rubber ring on one side of the limiting ring, the first rubber ring is internally provided with a positioning hole, and the positioning hole is clampedly connected with the positioning rod.

[0011] Further, the outer wall of the first pressurizing inner pipe is provided with an annular clamping groove.

[0012] Further, the locking assembly comprises an installation support fixedly connected to the outer wall of the connecting pipe, a bidirectional screw rod is arranged in the installation support, a sliding plate is slidably connected to the inner wall of the installation support, the bidirectional screw rod is in threaded connection with the sliding plate, and a clamping ring is fixedly connected to the lower end of the sliding plate.

[0013] Further, the flange assembly comprises a second pressurizing inner pipe fixedly connected to the end of the first pressurizing inner pipe, a first flange fixedly connected to the end of the second pressurizing inner pipe, a second flange attached to the inner wall of the first flange, a third pressurizing inner pipe fixedly connected to the inside of the second flange, an installation groove arranged in the inner wall of the second flange, and a second rubber ring clamped in the installation groove.

[0014] Further, the support assembly comprises a support seat fixedly connected to the upper end of the LNG vehicle-mounted gas cylinder body, a U-shaped groove arranged in the inside of the support seat, a spring fixedly connected to the inner wall of the U-shaped groove, a clamping plate fixedly connected to the end of the spring, a pull rod arranged in the inner ring of the spring, and one end of the pull rod in fixed connection with the outer wall of the clamping plate and the outer wall of the pull rod in sliding connection with the inside of the U-shaped groove.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] One. The first pressurizing inner pipe is inserted into the inside of the connecting pipe, and then the first rubber ring is attached to the limiting ring fixed on the inner wall of the connecting pipe to improve the sealing performance and prevent LNG gas from leaking at the connecting position. Meanwhile, the positioning hole on the first rubber ring is clamped with the positioning rod on the limiting ring to ensure the stability of the first pressurizing inner pipe in the connecting pipe. The first pressurizing inner pipe is connected with the LNG vehicle-mounted gas cylinder body through the connecting pipe and the external connecting pipe, and then the bidirectional screw rod is rotated to make the clamping rings on the sliding plate close to each other, clamp the annular clamping groove on the outer wall of the first pressurizing inner pipe, and realize the installation of the first pressurizing inner pipe. The first pressurizing inner pipe in the connecting pipe will not be loosened or detached due to vibration or external force, the stability of the entire connecting structure is enhanced, the installation and disassembly process is more convenient, the maintenance efficiency and the operation convenience are improved, and each component can be individually disassembled and replaced without the need to disassemble the entire system.

[0017] Secondly, the third pressurizing inner pipe is locked and installed with the second pressurizing inner pipe through the second flange and the first flange, and the second rubber ring embedded in the installation groove in the inner wall of the second flange is attached to the first flange to improve the sealing performance during connection. The second rubber ring as a sealing element can fill the small gap between the flange connection surfaces to ensure the tightness of the connection. When the bolt pre-tightening force acts on the flange, the rubber ring deforms elastically, further enhancing the sealing effect. The structure adopts modular design, making the assembly and disassembly of the pressurizing inner pipe more convenient. When maintenance or replacement of parts is needed, the flange connection can be easily separated by loosening the bolts, reducing maintenance cost and time. Then the third pressurizing inner pipe is placed between the two sets of clamping plates for clamping, supporting and clamping the third pressurizing inner pipe, thereby facilitating the installation and connection of the third pressurizing inner pipe and the second pressurizing inner pipe. During the installation process, the third pressurizing inner pipe will not shake or shift, which helps to keep the alignment between the third pressurizing inner pipe and the second pressurizing inner pipe, thereby facilitating subsequent connection work without the need for additional manpower or tools for fixing, making the installation process more convenient and efficient, improving work efficiency, and providing a supporting force for the connected first, second and third pressurizing inner pipes, avoiding shaking due to suspension, improving the stability of the overall pressurizing pipe, and making the connection between components more flexible and convenient through the flange. When maintenance or replacement of the pressurizing inner pipe is needed, it can be easily disassembled and reinstalled. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the device body;

[0019] Figure 2 is a schematic diagram of the three-dimensional structure of the inside of the installation support;

[0020] Figure 3It is a schematic diagram of the connection of the first pressurizing inner tube and the connecting pipe.

[0021] Figure 4 It is a schematic diagram of the connection of the support seat.

[0022] In the figure: 1, LNG vehicle-mounted gas cylinder main body; 2, external connecting pipe; 201, connecting pipe; 3, first pressurizing inner tube; 301, annular clamping groove; 302, first rubber ring; 303, positioning hole; 4, limiting ring; 401, positioning rod; 5, mounting bracket; 501, bidirectional screw rod; 502, sliding plate; 503, clamping ring; 6, second pressurizing inner tube; 601, first flange; 602, second flange; 603, mounting groove; 604, second rubber ring; 7, support seat; 701, U-shaped groove; 702, spring; 703, clamping plate; 704, pull rod; 8, third pressurizing inner tube. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] As shown in Figure 1 - Figure 4 A LNG vehicle-mounted gas cylinder pressurizing inner tube modularized quick assembly structure, comprising a LNG vehicle-mounted gas cylinder main body 1, the upper end of the LNG vehicle-mounted gas cylinder main body 1 is fixedly connected with an external connecting pipe 2, the side wall of the external connecting pipe 2 is fixedly connected with a connecting pipe 201, the inside of the connecting pipe 201 is provided with a first pressurizing inner tube 3 connected through a clamping assembly, and the outer wall of the connecting pipe 201 is provided with a locking assembly for the first pressurizing inner tube 3.

[0025] The end of the first pressurizing inner tube 3 is provided with a third pressurizing inner tube 8 connected through a flange assembly, and the upper end of the LNG vehicle-mounted gas cylinder main body 1 is provided with a support assembly for mounting the third pressurizing inner tube 8.

[0026] In the preferred implementation, the clamping assembly includes a limiting ring 4 fixedly connected to the inner wall of the connecting pipe 201, the inner wall of the limiting ring 4 is fixedly connected with four groups of positioning rods 401, the first booster inner pipe 3 is located on the inner wall of the connecting pipe 201, and one end of the first booster inner pipe 3 is attached to the limiting ring 4, the first booster inner pipe 3 is fixedly connected with a first rubber ring 302 on one side of the limiting ring 4, the first rubber ring 302 is provided with a positioning hole 303 in the inside, the positioning hole 303 is clamped and connected with the positioning rod 401, the first booster inner pipe 3 is inserted into the inside of the connecting pipe 201, and then the first rubber ring 302 is attached to the limiting ring 4 fixedly connected to the inner wall of the connecting pipe 201, thereby improving the sealing performance and preventing LNG gas from leaking at the connection, and the positioning hole 303 provided on the first rubber ring 302 is clamped with the positioning rod 401 on the limiting ring 4, thereby ensuring the stability of the first booster inner pipe 3 in the connecting pipe 201, so that the first booster inner pipe 3 is connected with the LNG vehicle-mounted gas cylinder body 1 through the connecting pipe 201 and the external connecting pipe 2, and the first booster inner pipe 3 is only needed to be inserted into the connecting pipe 201 and fixed through the cooperation of the first rubber ring 302 and the limiting ring 4.

[0027] In the preferred implementation, the outer wall of the first booster inner pipe 3 is provided with an annular clamping groove 301, the locking assembly includes a mounting bracket 5 fixedly connected to the outer wall of the connecting pipe 201, the mounting bracket 5 is provided with a bidirectional screw rod 501 in the inside, the inner wall of the mounting bracket 5 is slidingly connected with a sliding plate 502, the bidirectional screw rod 501 is threadedly connected with the sliding plate 502, the lower end of the sliding plate 502 is fixedly connected with a clamping ring 503, when the first booster inner pipe 3 is inserted into the connecting pipe 201, the annular clamping groove 301 of the outer wall of the first booster inner pipe 3 is located between the two groups of clamping rings 503, the bidirectional screw rod 501 is rotated to realize the mutual approach of the clamping rings 503 on the sliding plate 502, the annular clamping groove 301 of the outer wall of the first booster inner pipe 3 is clamped, the installation work of the first booster inner pipe 3 is realized, the stability of the entire connecting structure is enhanced, the installation and disassembly process is more convenient and fast, the maintenance efficiency and the operation convenience are improved, and each component can be individually disassembled and replaced without the need for large-scale disassembly of the entire system.

[0028] In the preferred implementation, the flange assembly includes the first booster inner tube 3, the second booster inner tube 6 fixedly connected to the end of the first booster inner tube 3, the first flange 601 fixedly connected to the end of the second booster inner tube 6, the second flange 602 attached to the inner wall of the first flange 601, the third booster inner tube 8 fixedly connected inside the second flange 602, the mounting groove 603 formed in the inner wall of the second flange 602, and the second rubber ring 604 fitted in the mounting groove 603. The third booster inner tube 8 is installed by the second flange 602 and the first flange 601 and the second booster inner tube 6 by bolts. The second rubber ring 604 embedded in the mounting groove 603 on the inner wall of the second flange 602 is attached to the first flange 601, improving the sealing performance during connection. The second rubber ring 604 as a sealing element can fill the small gap between the flange connection surfaces due to its elastic properties, ensuring the tightness of the connection. When the bolt pre-tightening force acts on the flange, the rubber ring deforms elastically, further enhancing the sealing effect. The modular design of this structure makes the assembly and disassembly of the booster inner tube more convenient and efficient. When maintenance or replacement of parts is required, the flange connection can be easily separated by loosening the bolts, reducing maintenance costs and time.

[0029] In the preferred implementation, the support assembly includes the support seat 7 fixedly connected to the upper end of the LNG vehicle-mounted gas cylinder body 1, the U-shaped groove 701 formed in the inside of the support seat 7, the spring 702 fixedly connected to the inner wall of the U-shaped groove 701, the clamping plate 703 fixedly connected to the end of the spring 702, the pull rod 704 provided in the inner circle of the spring 702, and the outer wall of the pull rod 704 fixedly connected to one end of the clamping plate 703. The pull rod 704 is slidingly connected through the U-shaped groove 701. When installing the third booster inner tube 8 and the second booster inner tube 6, the clamping plate 703 connected to the inner wall of the U-shaped groove 701 by the spring 702 is pulled by the pull rod 704, the third booster inner tube 8 is placed between the two clamping plates 703 for clamping, and the third booster inner tube 8 is supported and clamped, facilitating the installation and connection of the third booster inner tube 8 and the second booster inner tube 6. This ensures that the third booster inner tube 8 does not shake or shift during installation, helping to maintain the alignment between the third booster inner tube 8 and the second booster inner tube 6, thus facilitating subsequent connection work without the need for additional manpower or tools for fixing, making the installation process more convenient and efficient, improving work efficiency, and providing a support force for the connected first booster inner tube 3, second booster inner tube 6, and third booster inner tube 8, avoiding shaking due to suspension, and improving the stability of the overall booster pipe. The flange makes the connection between components more flexible and convenient. When maintenance or replacement of the booster inner tube is required, the booster inner tube can be easily disassembled and reinstalled.

[0030] Working principle: the first booster inner tube 3 is inserted into the inside of the connecting pipe 201, and then is fixed on the limiting ring 4 on the inner wall of the connecting pipe 201 by the first rubber ring 302, so as to improve the sealing performance and prevent LNG gas from leaking at the connecting position; meanwhile, the positioning hole 303 on the first rubber ring 302 is clamped with the positioning rod 401 on the limiting ring 4, so as to ensure the stability of the first booster inner tube 3 in the connecting pipe 201; the first booster inner tube 3 is connected with the LNG vehicle-mounted gas cylinder body 1 through the connecting pipe 201 and the external connecting pipe 2, then the bidirectional screw rod 501 is rotated, the clamping rings 503 on the sliding plate 502 are moved close to each other, the annular clamping groove 301 on the outer wall of the first booster inner tube 3 is clamped, the installation of the first booster inner tube 3 is realized, and the first booster inner tube 3 is prevented from loosening or falling off in the connecting pipe 201 due to vibration or external force; the third booster inner tube 8 is installed through the second flange 602 and the first flange 601 and the second booster inner tube 6 through bolts, the second rubber ring 604 inlaid in the installation groove 603 on the inner wall of the second flange 602 is attached to the first flange 601, so as to improve the sealing performance during connection; finally, when the third booster inner tube 8 and the second booster inner tube 6 are installed, the clamping plates 703 connected with the inner wall of the U-shaped groove 701 through the springs 702 are pulled by the pull rods 704, the third booster inner tube 8 is placed between the two groups of clamping plates 703 for clamping, the third booster inner tube 8 is clamped and supported, so that the third booster inner tube 8 and the second booster inner tube 6 are conveniently installed and connected, the third booster inner tube 8 is prevented from shaking or moving during the installation process, the alignment between the third booster inner tube 8 and the second booster inner tube 6 is maintained, subsequent connection work is facilitated, and additional manpower or tools are not needed for fixing, so that the installation process is more convenient and fast, and the work efficiency is improved.

[0031] This is the working principle of the LNG vehicle-mounted gas cylinder booster inner tube modularization quick assembly structure.

[0032] The embodiments of the present application are given for the purpose of example and description, and are not exhaustive or limit the present application to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the present application, and to enable those skilled in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A LNG vehicle-mounted gas cylinder pressurized inner tube modular rapid assembly structure, comprising a LNG vehicle-mounted gas cylinder main body (1), characterized in that, The upper end of the LNG vehicle-mounted gas cylinder body (1) is fixedly connected with an external connecting pipe (2), the side wall of the external connecting pipe (2) is fixedly connected with a connecting pipe (201), the inside of the connecting pipe (201) is provided with a first pressurizing inner pipe (3) connected through a clamping assembly, and the outer wall of the connecting pipe (201) is provided with a locking assembly for the first pressurizing inner pipe (3). The end of the first pressurizing inner pipe (3) is provided with a third pressurizing inner pipe (8) connected through a flange assembly, and the upper end of the LNG vehicle-mounted gas cylinder body (1) is provided with a supporting assembly for mounting the third pressurizing inner pipe (8).

2. The LNG vehicle-mounted cylinder pressurized inner tube modular quick-assembly structure according to claim 1, characterized in that, The clamping assembly comprises a limiting ring (4) fixedly connected to the inner wall of the connecting pipe (201), the inner wall of the limiting ring (4) is fixedly connected with four groups of positioning rods (401), and the first pressurizing inner pipe (3) is located on the inner wall of the connecting pipe (201), and one end of the first pressurizing inner pipe (3) is attached to the limiting ring (4).

3. The LNG vehicle-mounted cylinder pressurized inner tube modular quick-assembly structure according to claim 2, characterized in that, The first pressurizing inner pipe (3) is fixedly connected with a first rubber ring (302) on one side of the limiting ring (4), the inside of the first rubber ring (302) is provided with a positioning hole (303), and the positioning hole (303) is clamped and connected with the positioning rod (401).

4. The LNG vehicle-mounted cylinder pressurized inner tube modular quick-assembly structure according to claim 1, characterized in that, The outer wall of the first pressurizing inner pipe (3) is provided with an annular clamping groove (301).

5. The LNG vehicle-mounted cylinder pressurized inner tube modular quick-assembly structure according to claim 1, characterized in that, The locking assembly comprises a mounting bracket (5) fixedly connected to the outer wall of the connecting pipe (201), the inside of the mounting bracket (5) is provided with a bidirectional screw rod (501), the inner wall of the mounting bracket (5) is slidingly connected with a sliding plate (502), the bidirectional screw rod (501) is in threaded connection with the sliding plate (502), and the lower end of the sliding plate (502) is fixedly connected with a clamping ring (503).

6. The LNG vehicle-mounted cylinder pressurized inner tube modular quick-assembly structure according to claim 1, characterized in that, The flange assembly comprises a second pressurizing inner pipe (6) fixedly connected to the end of the first pressurizing inner pipe (3), the end of the second pressurizing inner pipe (6) is fixedly connected with a first flange (601), the inner wall of the first flange (601) is attached with a second flange (602), the third pressurizing inner pipe (8) is fixedly connected in the inside of the second flange (602), the inner wall of the second flange (602) is provided with a mounting groove (603), and the inside of the mounting groove (603) is clamped with a second rubber ring (604).

7. The LNG vehicle-mounted cylinder pressurized inner tube modular quick-assembly structure according to claim 1, characterized in that, The supporting assembly comprises a supporting seat (7) fixedly connected to the upper end of the LNG vehicle-mounted gas cylinder body (1), the inside of the supporting seat (7) is provided with a U-shaped groove (701), the inner wall of the U-shaped groove (701) is fixedly connected with a spring (702), the end of the spring (702) is fixedly connected with a clamping plate (703), the inner ring of the spring (702) is provided with a pull rod (704), one end of the pull rod (704) is in fixed connection with the outer wall of the clamping plate (703), and the outer wall of the pull rod (704) is in sliding connection with the inside of the U-shaped groove (701).

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