Natural gas pipe hydrogen corrosion resistance simulation experiment device

Abstract

The utility model discloses a natural gas pipe hydrogen corrosion resistance simulation experiment device which comprises an installation box, the top of the installation box is rotatably connected with a sealing cover, the bottom of the installation box is filled with a soil layer, one side of the installation box is provided with a test pipeline, one end of the test pipeline penetrates through the installation box and extends into the installation box, and the other end of the test pipeline is provided with a gas inlet. The test pipeline penetrates through the soil layer, then penetrates through the mounting box and extends to the outside of the mounting box. The utility model relates to the technical field of natural gas pipe detection. According to the hydrogen corrosion resistance simulation experiment device for the natural gas pipe, through the arrangement of the driving mechanism, the driving assembly drives the movable rod to reciprocate to be matched with the one-way valve to drive natural gas in the test pipeline to flow, the use scene of gas transmission of the natural gas pipeline is simulated, and the corrosion condition and the corrosion rule of the gas pipeline in soil are detected; accuracy of experimental data is ensured, and deviation generated by field application design of the natural gas pipeline is reduced as much as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas pipe detection technical field, concretely is a kind of natural gas pipe hydrogen corrosion simulation experiment device. BACKGROUND

[0002] According to patent authorized announcement No. CN 216386725 U a kind of buried natural gas pipeline corrosiveness simulation testing device, it is related to natural gas storage and transportation experimental technical field, the utility model device includes Teflon shell, insulating layer, electric heating film, support frame, test pipe body, electric heating controller, upper cover plate, Teflon shell is arranged with insulating layer outside, Teflon shell inner wall bottom is arranged with electric heating film, support frame, test pipe body is arranged at support frame top, insulating layer outer wall is arranged with electric heating controller, Teflon shell top is arranged with upper cover plate, upper cover plate is connected with Teflon shell by buckle, upper cover plate top surface is arranged with temperature sensor, humidity sensor, test pipe body includes test natural gas pipe, bottom sealing cover, top sealing cover.The existing natural gas pipeline corrosiveness simulation testing device, for example in the above-mentioned utility model, when testing natural gas pipeline, natural gas in experimental pipeline is usually stationary, cannot accurately simulate the use environment of actual gas pipeline, so that experimental result is inaccurate, can cause deviation of natural gas pipeline field application design. UTILITY MODEL CONTENT

[0003] In view of the deficiencies of the prior art, the utility model provides a natural gas pipe hydrogen corrosion simulation experiment device, which solves the problem that the existing natural gas pipeline corrosiveness simulation testing device cannot accurately simulate the use environment of actual gas pipeline when testing natural gas pipeline, so that the experimental result is inaccurate and can cause deviation of natural gas pipeline field application design.

[0004] To achieve the above object, the utility model is realized by the following technical scheme: a natural gas pipe hydrogen corrosion simulation experiment device, including installation box, the top of the installation box is rotatably connected with sealing cover, the bottom of the installation box is filled with soil layer, one side of the installation box is provided with test pipe, one end of the test pipe penetrates the installation box and extends to the inside of the installation box, the test pipe penetrates the installation box and extends to the outside of the installation box after passing through the soil layer, the test pipe is provided with pressure gauge outside the installation box, the drive mechanism for driving natural gas to flow is arranged between the gas inlet and the gas outlet of the test pipe, the drive mechanism includes installation cylinder, the installation cylinder is fixedly connected with the surface of the installation box, the gas inlet and the gas outlet of the test pipe are communicated with the installation cylinder through the check valve for controlling the direction of gas movement, the inner wall of the installation cylinder is slidably connected with movable rod, and the drive assembly for driving the movable rod to move is arranged between the movable rod and the installation cylinder.

[0005] Preferably, the top of the sealing cover is provided with a thermometer and a hygrometer, and the inside of the mounting box is provided with a temperature regulator.

[0006] Preferably, the driving assembly comprises a fixed cylinder fixedly connected with the mounting cylinder, one end of the fixed cylinder is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a driving rod, and one end of the driving rod penetrates through the fixed cylinder and extends into the inside of the fixed cylinder.

[0007] Preferably, one end of the driving rod located in the inside of the fixed cylinder is fixedly connected with a mounting column, a sliding groove is formed in the surface of the mounting column, a sliding block is slidably connected with the inner wall of the sliding groove, and the sliding block is fixedly connected with a connecting frame.

[0008] Preferably, a guide rail is fixedly connected with the inner wall of the fixed cylinder, a guide block is slidably connected with the surface of the guide rail, and the guide block is fixedly connected with the sliding block.

[0009] Preferably, a connecting rod is fixedly connected with the surface of the connecting frame, one end of the connecting rod away from the connecting frame penetrates through the fixed cylinder and the mounting cylinder and extends into the inside of the mounting cylinder, and the other end of the connecting rod located in the inside of the mounting cylinder is fixedly connected with the movable rod.

[0010] Beneficial effects

[0011] The natural gas pipe hydrogen corrosion resistant simulation experiment device has the following beneficial effects compared with the prior art:

[0012] (1), the natural gas pipe hydrogen corrosion resistant simulation experiment device, the top of the mounting box is rotatably connected with a sealing cover, the bottom of the mounting box is filled with a soil layer, one side of the mounting box is provided with a test pipeline, one end of the test pipeline penetrates through the mounting box and extends into the inside of the mounting box, the test pipeline penetrates through the soil layer and extends to the outside of the mounting box, a pressure gauge is arranged on the outside of the test pipeline, a driving mechanism for driving the flow of natural gas is arranged between the gas inlet and the gas outlet of the test pipeline, the driving mechanism comprises a mounting cylinder fixedly connected with the surface of the mounting box, the gas inlet and the gas outlet of the test pipeline are communicated with the mounting cylinder through a one-way valve for controlling the movement direction of the gas, a movable rod is slidably connected with the inner wall of the mounting cylinder, and a driving assembly for driving the movement of the movable rod is arranged between the movable rod and the mounting cylinder. Through the arrangement of the driving mechanism, the driving assembly drives the reciprocating movement of the movable rod, and the one-way valve drives the flow of natural gas in the test pipeline, so as to simulate the use scene of the natural gas pipeline, detect the corrosion condition and corrosion rule of the gas pipeline in the soil, ensure the accuracy of the experimental data, and reduce the deviation caused by the on-site application design of the natural gas pipeline as much as possible.

[0013] (2), the natural gas pipe hydrogen corrosion resistance simulation experiment device, through the drive assembly including fixed cylinder, the fixed cylinder is fixedly connected with the mounting cylinder, one end of the fixed cylinder is fixedly connected with the driving motor, the output end of the driving motor is fixedly connected with the driving rod, one end of the driving rod penetrates through the fixed cylinder and extends to the inside of the fixed cylinder, the end of the driving rod located in the fixed cylinder is fixedly connected with the mounting column, the surface of the mounting column is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a sliding block, the sliding block is fixedly connected with a connecting frame, the inner wall of the fixed cylinder is fixedly connected with a guide rail, the surface of the guide rail is slidably connected with a guide block, the guide block is fixedly connected with the sliding block, the surface of the connecting frame is fixedly connected with a connecting rod, one end of the connecting rod away from the connecting frame penetrates through the fixed cylinder and the mounting cylinder and extends to the inside of the mounting cylinder, the end of the connecting rod located in the mounting cylinder is fixedly connected with the movable rod, through the setting of the drive assembly, the driving motor works and drives the mounting column to rotate through the driving rod, the mounting column rotates and drives the connecting frame to reciprocate through the cooperation between the sliding block and the sliding groove, and the natural gas is pumped to provide power for the movement of the movable rod. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the perspective view of the structure of the utility model;

[0015] Figure 2 It is the sectional view of the structure of the utility model;

[0016] Figure 3 It is the sectional view of the driving mechanism of the utility model;

[0017] Figure 4 It is the perspective view of the mounting column of the utility model.

[0018] In the drawing: 1 installation box, 2 sealing cover, 3 soil layer, 4 test pipeline, 5 driving mechanism, 51 mounting cylinder, 52 one-way valve, 53 movable rod, 54 drive assembly, 541 fixed cylinder, 542 driving motor, 543 driving rod, 544 mounting column, 545 sliding groove, 546 sliding block, 547 connecting frame, 548 guide rail, 549 guide block, 55 connecting rod, 6 pressure gauge, 7 mounting cylinder, 8 thermometer, 9 hygrometer, 10 thermostat. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be apparently and completely described below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range protected by the utility model.

[0020] The utility model provides two technical schemes:

[0021] Figures 1-4 The first embodiment is shown: a kind of hydrogen corrosion simulation experimental device of gas pipe, including installation box 1, the top of installation box 1 is rotatably connected with sealing cover 2, the bottom of installation box 1 is filled with soil layer 3, one side of installation box 1 is provided with test pipeline 4, one end of test pipeline 4 penetrates installation box 1 and extends to the inside of installation box 1, test pipeline 4 penetrates installation box 1 and extends to the outside of installation box 1 after passing through soil layer 3, pressure gauge 6 is provided on the outside of test pipeline 4, driving mechanism 5 for driving natural gas to flow is provided between the gas inlet and outlet of test pipeline 4, driving mechanism 5 includes installation cylinder 51, installation cylinder 51 is fixedly connected with the surface of installation box 1, the gas inlet and outlet of test pipeline 4 are both communicated with installation cylinder 51 by one-way valve 52 for controlling the direction of gas movement, slidingly connected with movable rod 53 on the inner wall of installation cylinder 51, driving assembly 54 for driving movable rod 53 to move is provided between movable rod 53 and installation cylinder 51, thermometer 8 and hygrometer 9 are provided on the top of sealing cover 2, temperature controller 10 is provided in installation box 1, temperature controller 10 facilitates the temperature adjustment in installation box 1, simulates the temperature change of four seasons.

[0022] By the setting of driving mechanism 5, driving assembly 54 drives movable rod 53 to reciprocate, and one-way valve 52 drives natural gas in test pipeline 4 to flow, simulates the use scene of natural gas pipeline gas transmission, ensures the accuracy of experimental data, and reduces the deviation generated by natural gas pipeline field application design as much as possible.

[0023] Figure 2 And 3 The second embodiment is shown, and the main difference from the first embodiment is that: driving assembly 54 includes fixed cylinder 541, fixed cylinder 541 is fixedly connected with installation cylinder 51, one end of fixed cylinder 541 is fixedly connected with driving motor 542, driving motor 542 is variable frequency motor, connected with control system and power supply through wire, the output end of driving motor 542 is fixedly connected with driving rod 543, one end of driving rod 543 penetrates fixed cylinder 541 and extends to the inside of fixed cylinder 541, the end of driving rod 543 inside fixed cylinder 541 is fixedly connected with mounting column 544, sliding groove 545 is formed in the surface of mounting column 544, sliding block 546 is slidably connected with the inner wall of sliding groove 545, sliding block 546 is fixedly connected with connecting frame 547, the inner wall of fixed cylinder 541 is fixedly connected with guide rail 548, guide block 549 is slidably connected with the surface of guide rail 548, guide block 549 is fixedly connected with sliding block 546, connecting rod 55 is fixedly connected with the surface of connecting frame 547, one end of connecting rod 55 away from connecting frame 547 penetrates fixed cylinder 541 and installation cylinder 51 and extends to the inside of installation cylinder 51, the end of connecting rod 55 inside installation cylinder 51 is fixedly connected with movable rod 53.

[0024] Through the setting of the driving assembly 54, the driving motor 542 works to drive the mounting column 544 to rotate through the driving rod 543, the mounting column 544 rotates to drive the connecting frame 547 to reciprocate through the cooperation between the sliding block 546 and the sliding groove 545, and the connecting frame 547 reciprocates to drive the movable rod 53 to reciprocate through the connecting rod 55, and the movable rod 53 reciprocates to drive the natural gas in the test pipeline 4 to flow through the cooperation between the movable rod 53 and the one-way valve 52, thereby simulating the use scene of the natural gas pipeline gas transmission.

[0025] In use, the natural gas is injected into the test pipeline 4, the pressure of the natural gas in the test pipeline 4 is observed through the pressure gauge 6, the sealing cover 2 is closed, the temperature controller 10 and the driving motor 542 are opened through the control panel, the temperature controller 10 works to adjust the temperature inside the mounting box 1 to simulate the temperature changes in four seasons, the driving motor 542 works to drive the mounting column 544 to rotate through the driving rod 543, the mounting column 544 rotates to drive the connecting frame 547 to reciprocate through the cooperation between the sliding block 546 and the sliding groove 545, the connecting frame 547 reciprocates to drive the movable rod 53 to reciprocate through the connecting rod 55, and the movable rod 53 reciprocates to drive the natural gas in the test pipeline 4 to flow through the cooperation between the movable rod 53 and the one-way valve 52, thereby simulating the use scene of the natural gas pipeline gas transmission, and the device is operated, the corrosion of the test pipeline 4 is observed and recorded regularly.

[0026] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A natural gas pipe hydrogen corrosion resistance simulation experiment device, comprising a mounting box (1), a sealing cover (2) is rotatably connected to the top of the mounting box (1), characterized in that: The bottom of the installation box (1) is filled with a soil layer (3), one side of the installation box (1) is provided with a test pipeline (4), one end of the test pipeline (4) penetrates the installation box (1) and extends to the inside of the installation box (1), the test pipeline (4) penetrates the installation box (1) and extends to the outside of the installation box (1) after penetrating the soil layer (3), the test pipeline (4) is provided with a pressure gauge (6) outside the installation box (1), and a driving mechanism (5) for driving natural gas flow is arranged between the gas inlet and the gas outlet of the test pipeline (4); The driving mechanism (5) comprises a mounting cylinder (51) fixedly connected with the surface of the installation box (1), the gas inlet and the gas outlet of the test pipeline (4) are communicated with the mounting cylinder (51) through one-way valves (52) for controlling the direction of gas movement, and the inner wall of the mounting cylinder (51) is slidably connected with a movable rod (53), and a driving assembly (54) for driving the movement of the movable rod (53) is arranged between the movable rod (53) and the mounting cylinder (51).

2. The hydrogen corrosion resistant simulation experimental device for natural gas pipeline according to claim 1, characterized in that: The top of the sealing cover (2) is provided with a thermometer (8) and a hygrometer (9), and the inside of the installation box (1) is provided with a thermostat (10).

3. The hydrogen corrosion resistant simulation experimental device for natural gas pipeline according to claim 1, characterized in that: The driving assembly (54) comprises a fixed cylinder (541) fixedly connected with the mounting cylinder (51), one end of the fixed cylinder (541) is fixedly connected with a driving motor (542), the output end of the driving motor (542) is fixedly connected with a driving rod (543), and one end of the driving rod (543) penetrates the fixed cylinder (541) and extends to the inside of the fixed cylinder (541).

4. The hydrogen corrosion resistant simulation experimental device for natural gas pipeline according to claim 3, characterized in that: One end of the driving rod (543) inside the fixed cylinder (541) is fixedly connected with a mounting column (544), the surface of the mounting column (544) is provided with a sliding groove (545), the inner wall of the sliding groove (545) is slidably connected with a sliding block (546), and the sliding block (546) is fixedly connected with a connecting frame (547).

5. The hydrogen corrosion resistant simulation experimental device for natural gas pipe according to claim 4, characterized in that: The inner wall of the fixed cylinder (541) is fixedly connected with a guide rail (548), the surface of the guide rail (548) is slidably connected with a guide block (549), and the guide block (549) is fixedly connected with the sliding block (546).

6. The hydrogen corrosion resistant simulation experimental device for natural gas pipe according to claim 5, characterized in that: The surface of the connecting frame (547) is fixedly connected with a connecting rod (55), one end of the connecting rod (55) away from the connecting frame (547) penetrates the fixed cylinder (541) and the mounting cylinder (51) and extends to the inside of the mounting cylinder (51), and the other end of the connecting rod (55) inside the mounting cylinder (51) is fixedly connected with the movable rod (53).

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