Nonmetal hydrogen conveying pipeline testing device

Abstract

The utility model provides a non-metal hydrogen conveying pipeline testing device, which relates to the technical field of non-metal hydrogen conveying pipeline testing and comprises a supporting seat, and a testing cylinder is fixedly mounted on the top surface of the supporting seat. According to the utility model, a worker only needs to align the nonmetal hydrogen conveying pipeline with the conical groove, insert the nonmetal hydrogen conveying pipeline into the placing hole, sleeve the nonmetal hydrogen conveying pipeline with a sealing ring and fix the nonmetal hydrogen conveying pipeline through a clamp to start testing, air pressure pushes the piston to move when the air pressure in the placing hole is increased, and air can be exhausted from the exhaust hole when the piston is pushed to the exhaust hole, so that the testing pressure is prevented from being too large; the test pressure is kept constant, the test safety and accuracy are improved, meanwhile, a sliding rod and a spring are additionally arranged, a worker can easily adjust the test pressure range according to needs, the displacement resistance of the piston can be increased through the combination of the sliding rod and the spring, and therefore higher atmospheric pressure is allowed to be tested, and the test efficiency is improved. And meanwhile, the spring is changed into a modular structure through the adding mode, so that the spring is convenient to replace and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to non -metallic hydrogen pipeline testing technical field especially relates to a non -metallic hydrogen pipeline testing arrangement. BACKGROUND

[0002] The non -metallic hydrogen pipeline testing technical field mainly relates to the technology and method for detecting various performances and safety of non -metallic pipeline for conveying hydrogen. The technology in this field focuses on ensuring the sealing, pressure resistance, corrosion resistance and environmental stress cracking resistance of the pipeline when transporting hydrogen. Because hydrogen molecules are small, permeable and flammable, non -metallic hydrogen pipeline needs to be strictly tested before use to prevent leakage and explosion risk. These tests usually include static pressure test, dynamic pressure test, hydrogen permeation test, environmental simulation test, etc., aiming to verify the reliability and stability of the pipeline material.

[0003] Publication No. CN218545989U discloses a pipeline pressure testing device, which comprises a transverse cylindrical block, a tapered groove is formed on one side of the cylindrical block, a through hole is formed on the other side of the cylindrical block, the through hole communicates with the tapered groove, a piston plate is arranged in the through hole, one side of the piston plate is rotatably connected with one end of the telescopic rod thin rod, an external thread is arranged on the outer periphery of the telescopic rod thick rod, the telescopic rod thick rod penetrates through a movable plate and is threadedly connected, one end of the telescopic rod thick rod is fixedly connected with one side of the rotating block, the rotating block is rotatably installed on the other side of the cylindrical block, a spring is arranged between the movable plate and the piston plate, a limiting device is arranged between the movable plate and the through hole, the cylindrical block is arranged in the exhaust hole communicated with the through hole, a clamping device is arranged on one side of the cylindrical block, a valve core is fixedly installed on the cylindrical block, and the valve core is in communication with one side of the through hole close to the tapered groove. Although the pipeline pressure testing device does not need to replace the inflation connector and can be directly connected and fixed with pipelines of different diameters. However, in the pipeline pressure testing device, the spring and the slide rod are fixed in the device, and different specifications of the spring or the slide rod cannot be quickly adjusted or replaced according to different testing requirements, and when these components are damaged or need to be replaced, the worker needs to disassemble the entire testing device or its main part to replace it. This disassembly process needs professional tools and skills, which not only consumes time, but also easily causes damage to other components. Therefore, improvement is needed. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the technical problems in the above background technology.

[0005] The utility model discloses a technical scheme as follows: A nonmetal hydrogen pipeline testing device, including support seat, the top surface fixed mounting of support seat has test cylinder, the one end of test cylinder is provided with conical groove, the inner wall of conical groove is provided with the hole of placing, the surface of test cylinder is connected with valve core, the surface of test cylinder is provided with exhaust hole, the one end of test cylinder is provided with mounting groove, the inner wall sliding connection of mounting groove has installation post, the one end fixed mounting of installation post has the connecting block, the side surface of connecting block inserts and arranges the limit bolt, the one end of test cylinder is provided with screw hole, the one end of installation post is provided with slide, the one end fixed mounting of slide has the block, the surface of slide is equipped with the spring, the inside sliding connection of test cylinder has the center column, the one end fixed mounting of center column has the piston.

[0006] Preferably, the slide and the installation post are slidingly connected, and the piston has the same size as the hole.

[0007] Preferably, the exhaust hole and the hole are in communication, and the valve core and the hole are in communication.

[0008] Preferably, the test cylinder is provided with a clamp at one end, and the clamp is symmetrically distributed at one end of the test cylinder. Here, the nonmetal hydrogen pipeline can be stably fixed.

[0009] Preferably, the test cylinder is made of carbon steel. Here, the structural strength of the test cylinder can be improved.

[0010] Preferably, the test cylinder is provided with an emergency exhaust mechanism, the emergency exhaust mechanism includes an emergency exhaust hole, the emergency exhaust hole is provided in the test cylinder, and the inner wall of the emergency exhaust hole is fixedly provided with a blocking plate. Here, the safety can be improved.

[0011] Preferably, the blocking plate and the emergency exhaust hole are welded.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that,

[0013] 1、The utility model discloses, staff only needs to aim nonmetal hydrogen pipeline with conical groove inserts and places hole, sets up sealing washer and can start testing through fixture, and when the air pressure in the placement hole promotes, the air pressure promotes the piston movement, when the piston is pushed to the exhaust port, air can be discharged from the exhaust hole, avoids that the test pressure is too big, makes the test pressure keep constant, has improved the security and accuracy of testing, and simultaneously through the installation slide bar and spring, staff can adjust the test pressure range according to need easily, the combination of slide bar and spring can increase the displacement resistance of piston, thereby allowing to test to greater air pressure, expands the application range of testing device, and simultaneously this installation mode lets the spring become modular structure, thereby convenient for the replacement maintenance of spring, and through the installation slide bar and spring, form modular structure, convenient replacement and maintenance, staff can install slide bar and spring according to need simply, improve the resistance of piston, thereby test to greater air pressure, expand the application range of testing device, and simultaneously can conveniently replace the spring that has been damaged.

[0014] 2、The utility model discloses a emergency air release hole and blocking plate are designed when the piston failure or damage leads to the placement hole blockage, when the pressure is too big, the blocking plate will be washed away under the action of air pressure, thereby through the emergency air release hole fast pressure relief, this mechanism can effectively avoid nonmetal hydrogen pipeline damage or explosion because of the pressure is too big, provides additional security guarantee, the design of emergency air release hole and blocking plate makes the utility model discloses can respond rapidly and release pressure when the pressure is too high, reduced the equipment damage or safety accident because of the pressure is suddenly increased, ensure the security and reliability of testing process, and the practicality is higher. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a schematic view of a nonmetal hydrogen pipeline testing device according to the utility model;

[0016] Fig. 2 is a sectional view of a nonmetal hydrogen pipeline testing device according to the utility model;

[0017] Fig. 3 is an enlarged view of portion A in Fig. 2 of a nonmetal hydrogen pipeline testing device according to the utility model;

[0018] Fig. 4 is a top view sectional view of a nonmetal hydrogen pipeline testing device according to the utility model.

[0019] Legend:

[0020] 1, support seat, 2, test cylinder, 3, conical groove, 4, placement hole, 5, valve core, 6, exhaust hole, 7, fixture, 8, installation groove, 9, installation column, 10, connecting block, 11, limit bolt, 12, screw hole, 13, slide bar, 14, stop block, 15, spring, 16, center column, 17, piston, 18, emergency air release hole, 19, blocking plate. DETAILED DESCRIPTION

[0021] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the following will further describe the present application with reference to the accompanying drawings and examples. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in different ways from those described herein without departing from the scope of the present application, and the present application is not limited to the specific embodiments disclosed in the following description.

[0023] Embodiment one

[0024] Please refer to Figures 1-4The utility model provides a technical scheme: a nonmetal hydrogen pipeline testing device, including support seat 1, the top surface fixed mounting of support seat 1 has test cylinder 2, the material quality of test cylinder 2 is carbon steel, carbon steel material quality has high strength and good corrosion resistance, is suitable for high pressure test environment. The selection of carbon steel ensures the durability and reliability of the device, especially in high pressure environment can keep stable performance for a long time. The structure of support seat 1 can be fixed with test cylinder 2 by welding or bolt connection mode, such connection mode not only ensures the stability and support of equipment, also is convenient for later dismounting and maintenance. One end of test cylinder 2 is equipped with clamp 7, and clamp 7 is symmetrically distributed at one end of test cylinder 2, and clamp 7 can adopt bolt fixing, riveting or buckle connection mode, to ensure the stability and convenience of connection, so that it is convenient to fix different sizes of nonmetal hydrogen pipeline. The material quality of clamp 7 can select high-strength alloy or engineering plastic, which has excellent mechanical strength and wear resistance. The clamp 7 of high-strength alloy material has better durability and stability in high pressure test, and the clamp 7 of engineering plastic material has the characteristics of light weight and convenient operation. One end of test cylinder 2 is provided with a tapered groove 3, and the inner wall of the tapered groove 3 is provided with a placing hole 4, which is used for inserting the nonmetal hydrogen pipeline, and the tapered groove 3 is designed into a tapered shape to facilitate insertion and improve the sealing performance. The size of the tapered groove 3 and the placing hole 4 is accurately designed to ensure that the pipeline can be stably inserted and fixed. The inner wall of the placing hole 4 can be coated with wear-resistant material to increase its durability and reduce friction. The surface of test cylinder 2 is communicated with valve core 5, and the valve core 5 is used for connecting the external gas source. The material of valve core 5 can be selected from high-pressure-resistant metal or composite material to ensure its sealing performance and durability under high pressure. The valve core 5 can be installed on the surface of the test cylinder 2 by screw connection or welding, to ensure the firmness and sealing performance of the connection. The surface of test cylinder 2 is provided with an exhaust hole 6, which is communicated with the placing hole 4. The valve core 5 is communicated with the placing hole 4 to ensure the smoothness of gas filling and exhaust. The design of the exhaust hole 6 can effectively prevent the test pressure from being too high, while maintaining the stability and safety of the system. One end of test cylinder 2 is provided with a mounting groove 8, and the inner wall of the mounting groove 8 is slidably connected with a mounting column 9. The mounting column 9 can adopt guide rail sliding or bearing sliding mode to ensure smooth movement. The guide rail sliding mode can provide good guidance and stability, while the bearing sliding mode can reduce friction, improve sliding efficiency and durability. One end of the mounting column 9 is fixedly installed with a connecting block 10, and the side surface of the connecting block 10 is inserted with a limiting bolt 11. The limiting bolt 11 is used for fixing the position of the mounting column 9. The limiting bolt 11 can adopt screw connection, buckle connection or quick release device to facilitate dismounting and adjustment. One end of test cylinder 2 is provided with a screw hole 12, which is used for cooperating with the limiting bolt 11 to ensure the stability of the connection and the convenience of adjustment.

[0025] One end of the installation column 9 is provided with a sliding rod 13, and the sliding rod 13 is in sliding connection with the installation column 9. The sliding rod 13 can adopt a guide sliding rail or bearing sliding mode to ensure the stability and accuracy of the sliding. One end of the sliding rod 13 is fixedly provided with a stop block 14, and the stop block 14 can be made of high-strength metal material or engineering plastic, and has good mechanical strength and durability. The surface of the sliding rod 13 is sleeved with a spring 15, and the spring 15 is used to provide a rebounding force. The spring 15 can be made of spring steel and has good elasticity and durability. The spring 15 can be installed by buckling or threaded connection to ensure its stability and convenience during use. The inside of the test cylinder 2 is in sliding connection with a center column 16, one end of the center column 16 is fixedly provided with a piston 17, and the piston 17 is the same size as the placement hole 4 to ensure the sealing and the accuracy of the movement. The piston 17 can be made of high-strength alloy or wear-resistant engineering plastic, and has excellent pressure resistance and wear resistance. The sliding connection of the center column 16 can adopt a guide sliding rail or bearing sliding mode to ensure its smooth and accurate movement.

[0026] Please refer to Figures 1-4In the test of the pressure resistance of the non-metal hydrogen pipeline, the staff only needs to insert the non-metal hydrogen pipeline into the placement hole 4 by aligning the conical groove 3, and the surface of the non-metal hydrogen pipeline can be sleeved with a sealing ring to improve the sealing performance, then the non-metal hydrogen pipeline is fixed by the clamp 7, then the air inlet core 5 is connected to the air source, at this time the air inlet core 5 can be used to fill air to the placement hole 4 and the non-metal hydrogen pipeline, and the pressure resistance of the non-metal hydrogen pipeline can be tested. The sealing ring can be made of high-pressure-resistant rubber or composite material to ensure the sealing performance and durability. At the same time, when the air pressure in the placement hole 4 is increased, the air pressure can push the piston 17 to move, and when the piston 17 is pushed to the exhaust hole 6, the air can be discharged from the exhaust hole 6 at this time, so as to avoid excessive test pressure and keep the test pressure constant. The design of the exhaust hole 6 can effectively prevent the test pressure from being too high, while keeping the stability and safety of the system. When the test pressure needs to be increased, the staff only needs to insert the slide rod 13 and the mounting column 9 into the mounting slot 8, then screw the limiting bolt 11 into the connecting block 10, until the limiting bolt 11 is screwed into the screw hole 12, then the slide rod 13 and the spring 15 can be installed, and the stop block 14 can resist the piston 17, so as to increase the resistance of the piston 17. When the piston 17 is pushed by the pressure, the piston 17 can drive the stop block 14 to move, and the stop block 14 drives the slide rod 13 to move, and the stop block 14 presses the spring 15 at this time, and the spring 15 can resist the pressure in the placement hole 4 by the elastic force. By installing the slide rod 13 and the spring 15, the displacement resistance of the piston 17 can be increased, so that the larger air pressure can be tested. This design allows the staff to easily adjust the test pressure range according to the needs, and the combination of the slide rod 13 and the spring 15 can increase the displacement resistance of the piston 17, so that the larger air pressure can be tested, and the application range of the test device is expanded. At the same time, this installation method makes the spring 15 become a modular structure, so that the spring 15 can be easily replaced and maintained.

[0027] Example two

[0028] Please refer to Figure 4The inside of the test cylinder 2 is provided with an emergency gas release mechanism, which comprises an emergency gas release hole 18 formed in the inside of the test cylinder 2, and a blocking plate 19 fixedly installed on the inner wall of the emergency gas release hole 18, and the blocking plate 19 is in welded connection with the emergency gas release hole 18, so that the connection is firm and sealed, and is suitable for a high-pressure environment. When the piston 17 fails or is damaged to block the placement hole 4, the emergency gas release hole 18 and the blocking plate 19 are designed, and when the pressure is too large, the blocking plate 19 is forced open under the action of the gas pressure, so that the pressure is quickly released through the emergency gas release hole 18, which can effectively avoid the damage or explosion of the non-metal hydrogen conveying pipeline due to excessive pressure, and provides additional safety protection. The design of the emergency gas release hole 18 and the blocking plate 19 enables the utility model to quickly respond and release pressure when the pressure is too high, reduces the damage or safety accidents of the equipment caused by the sudden increase of the pressure, and ensures the safety and reliability of the test process.

[0029] Working principle: in the test nonmetallic hydrogen pipeline's pressure resistance performance, staff only need to aim nonmetallic hydrogen pipeline at conical groove 3 and insert into the placement hole 4, nonmetallic hydrogen pipeline surface can be set sealing ring to improve the sealing, then through clamp 7 and fix nonmetallic hydrogen pipeline, then connect the outside air source to air door core 5, this can be through air door core 5 to the placement hole 4 and nonmetallic hydrogen pipeline and air, this can test nonmetallic hydrogen pipeline's pressure resistance performance, while in the placement hole 4 air pressure rises, air pressure can push piston 17 movement, piston 17 is pushed to exhaust port after time, air can be discharged from the exhaust hole 6 at this time, thereby avoid test pressure too big, let test pressure constant, improve the safety and accuracy of test, simultaneously through the installation of slide rod 13 and spring 15, staff can easily adjust test pressure range according to the need, the combination of slide rod 13 and spring 15 can increase the displacement resistance of piston 17, thereby allow to test larger air pressure, expand the application range of test device, simultaneously this kind of installation mode lets spring 15 become modular structure, thereby facilitate the replacement maintenance of spring 15, when piston 17 failure and damage and lead to placement hole 4 blockage, when pressure is too big, due to the blocking plate 19 and emergency exhaust hole 18 are welded installation, bear lower pressure, when pressure is too big, blocking plate 19 can be air pressure and rush open, this can be through emergency exhaust hole 18 and fast pressure relief, thereby avoid nonmetallic hydrogen pipeline damage or explosion, in the utility model, when piston 17 failure or damage and lead to placement hole 4 blockage, design emergency exhaust hole 18 and blocking plate 19, when pressure is too big, blocking plate 19 will be rushed open under the action of air pressure, thereby through emergency exhaust hole 18 and fast pressure relief, this mechanism can effectively avoid nonmetallic hydrogen pipeline damage or explosion due to pressure is too big, provide additional security guarantee,The design of the emergency exhaust hole 18 and the blocking plate 19 enables the utility model to respond quickly and release pressure when the pressure is too high, reduces the damage or safety accidents of the equipment caused by the sudden increase of the pressure, and ensures the safety and reliability of the test process.

[0030] The above is only the preferred embodiment of the utility model, and is not a limitation on other forms of the utility model. Any skilled person in the art can change or modify the above disclosed technology content to equivalent embodiments with equivalent changes applied to other fields. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model without departing from the technical solution content of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A non-metallic hydrogen pipeline testing device, comprising a support base (1), characterized in that: A test cylinder (2) is fixedly mounted on the top surface of the support seat (1), a conical groove (3) is provided at one end of the test cylinder (2), a placement hole (4) is provided on the inner wall of the conical groove (3), a valve core (5) is communicated with the surface of the test cylinder (2), an exhaust hole (6) is provided on the surface of the test cylinder (2), a mounting groove (8) is provided at one end of the test cylinder (2), a mounting column (9) is slidably connected to the inner wall of the mounting groove (8), a connecting block (10) is fixedly mounted on one end of the mounting column (9), a limiting bolt (11) is inserted into the side of the connecting block (10), a screw hole (12) is provided at one end of the test cylinder (2), a sliding rod (13) is provided through one end of the mounting column (9), a stopper (14) is fixedly mounted on one end of the sliding rod (13), a spring (15) is sleeved on the surface of the sliding rod (13), a center column (16) is slidably connected to the interior of the test cylinder (2), and a piston (17) is fixedly mounted on one end of the center column (16).

2. The non-metallic hydrogen pipeline testing device according to claim 1, characterized in that: The sliding rod (13) is slidably connected to the mounting column (9), and the piston (17) is the same size as the placement hole (4).

3. The non-metallic hydrogen pipeline testing device according to claim 1, characterized in that: The exhaust hole (6) is in communication with the placement hole (4), and the valve core (5) is in communication with the placement hole (4).

4. The non-metallic hydrogen pipeline testing device according to claim 1, characterized in that: A clamp (7) is installed at one end of the test cylinder (2), and the clamp (7) is symmetrically distributed at one end of the test cylinder (2).

5. The non-metallic hydrogen pipeline testing device according to claim 1, characterized in that: The material of the test cylinder (2) is carbon steel.

6. The non-metallic hydrogen pipeline testing device according to claim 1, characterized in that: An emergency deflation mechanism is provided inside the test cylinder (2), and the emergency deflation mechanism includes an emergency deflation hole (18). The emergency deflation hole (18) is opened inside the test cylinder (2), and a blocking plate (19) is fixedly installed on the inner wall of the emergency deflation hole (18).

7. The non-metallic hydrogen pipeline testing device according to claim 6, characterized in that: The blocking plate (19) and the emergency air release hole (18) are connected by welding.

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