A corrosion-resistant plate device for sulfur-containing natural gas pipelines

Abstract

This utility model discloses a corrosion-supporting device for sulfur-containing natural gas pipelines, relating to the field of pipeline corrosion monitoring technology. The device includes a main body with a detachable cover on one side. Two sets of symmetrically arranged mounting grooves are formed on the outside of the cover. A thin plate is fixedly connected to the inner side of each mounting groove. A first magnetic block is slidably connected to the outer side of the thin plate, and a second magnetic block is slidably connected to the inner side of the thin plate, with the second magnetic block attracting the first magnetic block. A support mechanism for the support plate is installed between the two sets of second magnetic blocks. A connecting seat is fixedly connected to the outside of the cover, and a height adjustment mechanism is installed between the connecting seat and the first magnetic block. This device utilizes external magnetic blocks to drive internal components without contact, achieving precise positioning and lifting of the support plate at different heights within the pipeline. This completely avoids the leakage risks caused by dynamic seals and can safely and reliably obtain representative data from key corrosion-sensitive areas such as the top, middle, and bottom of the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of pipeline corrosion monitoring technology, and more specifically, to a corrosion-adhesive device for sulfur-containing natural gas pipelines. Background Technology

[0002] During the transportation of sulfur-containing natural gas, corrosion often occurs inside pipelines due to the presence of acidic media such as hydrogen sulfide and carbon dioxide, severely affecting the safe operation and service life of the pipelines. Currently, the assessment of pipeline corrosion often uses the plate-hanging method, but existing plate-hanging devices are often simple in structure and cannot be flexibly deployed according to different corrosive environments, making it difficult to comprehensively reflect the corrosion status at different locations within the pipeline.

[0003] However, most traditional corrosion-resistant plate devices are fixed installations, and the position of the plates cannot be adjusted. They also usually require mechanical transmission through the pipe wall, which poses risks of sealing difficulties and gas leakage in high-pressure and flammable environments. They cannot meet the dual requirements of safety and test representativeness for sulfur-containing natural gas pipelines. Therefore, in order to address the above technical problems, a corrosion-resistant plate device for sulfur-containing natural gas pipelines is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant hanging device for sulfur-containing natural gas pipelines. By using an external magnetic block to drive the internal components without contact, the device achieves precise positioning and lifting of the hanging plates at different heights within the pipeline, completely avoiding the leakage risks caused by dynamic seals. It can safely and reliably obtain representative data from key corrosion-sensitive areas such as the top, middle, and bottom of the pipeline.

[0005] This utility model is achieved through the following technical solution:

[0006] A corrosion-resistant hanging device for sulfur-containing natural gas pipelines includes a main body with a detachable cover on one side. The main body and the inner side of the cover are hollow. Two sets of symmetrically arranged mounting grooves are provided on the outside of the cover. A thin plate is fixedly connected to the inner side of the mounting groove. A first magnetic block is slidably connected to the outside of the thin plate, and a second magnetic block is slidably connected to the inside of the thin plate. The second magnetic block and the first magnetic block are attracted to each other. A hanging device is installed between the two sets of second magnetic blocks. A connecting seat is fixedly connected to the outside of the cover, and a height adjustment mechanism is installed between the connecting seat and the first magnetic block.

[0007] Preferably, connecting pipes are fixedly connected to both sides of the main body of the device, and flanges are fixedly connected to the outside of the connecting pipes.

[0008] Preferably, the thin plate is made of a corrosion-resistant non-magnetic material, and the exterior of the second magnetic block is coated with a corrosion-resistant material.

[0009] Preferably, the mounting plate mechanism includes a mounting plate, a positioning seat, and a mounting plate body. The mounting plate is fixedly connected between two sets of the second magnetic blocks, the positioning seat is fixedly connected to the outside of the mounting plate, and the mounting plate body is detachably connected to the outside of the positioning seat.

[0010] Preferably, the height adjustment mechanism includes a drive motor, a lead screw, a slider, a limiting groove, and a connecting plate. The drive motor is fixedly connected to the upper side of the connecting seat, the lead screw is fixedly connected to the lower side of the output shaft of the drive motor, and the lead screw is rotatably connected to the inner side of the connecting seat. The slider is threadedly connected to the outside of the lead screw, and the slider is limited and slidably connected to the inner side of the connecting seat.

[0011] Preferably, the limiting groove is formed on both sides of the connecting seat, the connecting plate is fixedly connected between the first magnetic block and the slider, and the connecting plate is slidably connected to the inner side of the limiting groove.

[0012] Preferably, an observation window is provided on the outside of the main body of the device.

[0013] The technical solution of this utility model has at least the following beneficial effects:

[0014] This invention proposes a corrosion-resistant hanging plate device for sulfur-containing natural gas pipelines. The device uses external magnetic force to drive the internal hanging plates up and down without contact, completely avoiding the leakage risk caused by traditional mechanical seals penetrating the pipe wall. This significantly improves safety and reliability in high-pressure, sulfur-containing environments. Operators can precisely control the positioning of the hanging plates from outside the pipeline, exposing them to typical corrosion environments such as the top liquid accumulation zone, the middle gas flow zone, and the bottom sedimentation zone. This allows for the acquisition of more representative corrosion data, providing comprehensive and accurate information for pipeline safety operation and maintenance decisions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0017] Figure 3 This is a partial side sectional view of the present invention;

[0018] Figure 4 for Figure 3 Enlarged view of B in the middle;

[0019] Figure 5 This is a partial front sectional view of the present invention;

[0020] Figure 6 for Figure 5 Enlarged view of C in the middle;

[0021] Figure 7 for Figure 3 Enlarged view of D;

[0022] Reference numerals in the attached drawings: 1. Main body of the device; 2. Cover; 3. Connecting pipe; 4. Flange; 5. Connecting seat; 6. Drive motor; 7. Lead screw; 8. Slider; 9. Limiting groove; 10. Mounting groove; 11. Thin plate; 12. First magnetic block; 13. Second magnetic block; 14. Connecting plate; 15. Mounting plate; 16. Positioning seat; 17. Hanging plate main body; 18. Observation window. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-7 An embodiment of this utility model proposes a corrosion-resistant hanging plate device for sulfur-containing natural gas pipelines, comprising a device body 1. The device body 1 serves as the core load-bearing structure of the entire device, used to install internal components and withstand pipeline medium pressure. A cover 2 is detachably connected to one side of the device body 1. The cover 2 is used to seal the device body 1 and serves as the mounting base for external transmission components. The inner sides of the device body 1 and the cover 2 are hollow structures, which form a sealed cavity to simulate the internal corrosion environment of the pipeline.

[0025] The outer side of the cover 2 has two sets of symmetrically arranged mounting grooves 10. The mounting grooves 10 are used to accommodate and fix the thin plate 11 and provide space for the magnetic block to move. The thin plate 11 is fixedly connected to the inner side of the mounting groove 10. The thin plate 11 is used to isolate the internal and external environment of the pipeline while allowing magnetic force to penetrate and be transmitted. The outer side of the thin plate 11 is slidably connected to the first magnetic block 12. The first magnetic block 12 is used as an external magnetic driving source and is used to move under the drive of the height adjustment mechanism. The inner side of the thin plate 11 is slidably connected to the second magnetic block 13. The second magnetic block 13 is used as an internal magnetic follower and is used to drive the hanging plate mounting mechanism to move synchronously under magnetic adsorption. The second magnetic block 13 and the first magnetic block 12 are attracted to each other. This magnetic adsorption pairing realizes contactless power transmission and avoids seal penetration.

[0026] A mounting mechanism is installed between the two sets of second magnetic blocks 13. The mounting mechanism is used to install and fix the corrosion test hanging plate, so that it is in a specific corrosion environment. A connecting seat 5 is fixedly connected to the outside of the cover 2. The connecting seat 5 serves as the mounting base of the height adjustment mechanism and provides motion guidance. A height adjustment mechanism is installed between the connecting seat 5 and the first magnetic block 12. The height adjustment mechanism is used to drive the first magnetic block 12 to precisely raise and lower to adjust the height position of the internal hanging plate.

[0027] Connecting pipes 3 are fixedly connected to both sides of the main body 1. The connecting pipes 3 are used to connect to external pipelines and transport sulfur-containing natural gas. Flanges 4 are fixedly connected to the outside of the connecting pipes 3. The flanges 4 are used to seal the connection with the external pipelines by bolts and ensure the stability of the device installation.

[0028] The thin plate 11 is made of a corrosion-resistant non-magnetic material. This material selection ensures that the thin plate 11 can work stably for a long time in a corrosive environment without affecting the magnetic force transmission. The exterior of the second magnetic block 13 is coated with a corrosion-resistant material. This corrosion-resistant coating protects the second magnetic block 13 from corrosion and maintains its magnetic performance.

[0029] The mounting plate mechanism includes a mounting plate 15, a positioning seat 16, and a mounting plate body 17. The mounting plate 15 is used to connect two sets of second magnetic blocks 13 and provide a mounting base for the positioning seat 16. The positioning seat 16 is fixedly connected to the outside of the mounting plate 15. The positioning seat 16 is used to accurately install and fix the mounting plate body 17. The mounting plate body 17 is detachably connected to the outside of the positioning seat 16. The mounting plate body 17 serves as a corrosion test sample and is used to expose to a corrosive environment to obtain corrosion data.

[0030] The height adjustment mechanism includes a drive motor 6, a lead screw 7, a slider 8, a limiting groove 9, and a connecting plate 14. The drive motor 6 serves as a power source to provide rotational motion and is fixedly connected to the upper side of the connecting seat 5. The lead screw 7 is fixedly connected to the lower side of the output shaft of the drive motor 6. The lead screw 7 is used to convert rotational motion into linear motion and is rotatably connected to the inner side of the connecting seat 5. The slider 8 is threadedly connected to the outside of the lead screw 7 and is used to move linearly along the limiting groove 9 under the drive of the lead screw 7. The slider 8 is limited and slidably connected to the inner side of the connecting seat 5.

[0031] Limiting grooves 9 are provided on both sides of the connecting seat 5. Limiting grooves 9 are used to limit the movement trajectory of slider 8 and prevent it from rotating. Connecting plate 14 is fixedly connected between the first magnetic block 12 and slider 8. Connecting plate 14 is used to connect slider 8 and first magnetic block 12 and transmit linear motion. Connecting plate 14 is slidably connected to the inside of limiting groove 9.

[0032] An observation window 18 is provided on the outside of the main body 1 of the device. The observation window 18 is used to directly observe the condition of the internal plates and the corrosion without damaging the seal.

[0033] The working principle of a corrosion-resistant hanging device for sulfur-containing natural gas pipelines, based on an embodiment, is as follows: the device drives the motor 6 to rotate the lead screw 7, which in turn drives the slider 8 to move up and down along the limiting groove 9. This, in turn, causes the connecting plate 14 to synchronously move the first magnetic block 12 outside the cover 2. Since the first magnetic block 12 and the second magnetic block 13 sealed inside the device body 1 are attracted to each other through the thin plate 11, forming magnetic coupling, the movement of the external first magnetic block 12 can drive the internal second magnetic block 13 and its connected mounting plate 15, positioning seat 16, and hanging body 17 to rise and fall synchronously without contact. This magnetic drive method achieves non-contact power transmission from the outside to the inside, completely avoiding the penetration structure of traditional dynamic seals, fundamentally eliminating the potential leakage risk under high pressure and sulfur-containing conditions in natural gas pipelines, and greatly improving the sealing reliability and safety of the device.

[0034] Using this device, operators can safely control the main body 17 of the hanging plate to precisely stop at typical locations inside the pipeline, such as the top where liquid may accumulate, the middle of the main gas phase region, and the bottom where corrosive deposits may accumulate, to conduct long-term hanging plate corrosion tests. The device is installed on the pipeline via the connecting pipe 3 and flange 4, and the internal condition can be observed through the observation window 18. This method can obtain representative data from different corrosion-sensitive areas of the pipeline, providing a more comprehensive and accurate basis for pipeline safety assessment and corrosion protection.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sulphur-containing natural gas pipeline corrosion coupon apparatus, characterized by: The device includes a main body (1), a cover (2) is detachably connected to one side of the main body (1), and the inner sides of the main body (1) and the cover (2) are hollow. The cover (2) has two sets of symmetrically arranged mounting grooves (10) on its outer side. A thin plate (11) is fixedly connected to the inner side of the mounting groove (10). A first magnetic block (12) is slidably connected to the outer side of the thin plate (11), and a second magnetic block (13) is slidably connected to the inner side of the thin plate (11). The second magnetic block (13) and the first magnetic block (12) are attracted to each other. A hanging plate mounting mechanism is installed between the two sets of second magnetic blocks (13). A connecting seat (5) is fixedly connected to the outer side of the cover (2), and a height adjustment mechanism is installed between the connecting seat (5) and the first magnetic block (12).

2. A sulphur-containing natural gas pipeline corrosion coupon apparatus according to claim 1, characterised in that: Connecting pipes (3) are fixedly connected to both sides of the main body (1) of the device, and flanges (4) are fixedly connected to the outside of the connecting pipes (3).

3. A sulphur-containing natural gas pipeline corrosion coupon apparatus according to claim 1, wherein: The thin plate (11) is made of corrosion-resistant non-magnetic material, and the exterior of the second magnetic block (13) is coated with corrosion-resistant material.

4. A sulphur-containing natural gas pipeline corrosion coupon apparatus according to claim 1, characterized in that: The mounting plate mechanism includes a mounting plate (15), a positioning seat (16), and a mounting plate body (17). The mounting plate (15) is fixedly connected between two sets of the second magnetic blocks (13). The positioning seat (16) is fixedly connected to the outside of the mounting plate (15). The mounting plate body (17) is detachably connected to the outside of the positioning seat (16).

5. A sulphur-containing natural gas pipeline corrosion coupon apparatus according to claim 1, wherein: The height adjustment mechanism includes a drive motor (6), a lead screw (7), a slider (8), a limiting groove (9), and a connecting plate (14). The drive motor (6) is fixedly connected to the upper side of the connecting seat (5). The lead screw (7) is fixedly connected to the lower side of the output shaft of the drive motor (6) and is rotatably connected to the inner side of the connecting seat (5). The slider (8) is threadedly connected to the outside of the lead screw (7) and is limited and slidably connected to the inner side of the connecting seat (5).

6. A sulphur-containing natural gas pipeline corrosion coupon apparatus according to claim 5, wherein: The limiting groove (9) is opened on both sides of the connecting seat (5), the connecting plate (14) is fixedly connected between the first magnetic block (12) and the slider (8), and the connecting plate (14) is slidably connected to the inner side of the limiting groove (9).

7. A sulphur-containing natural gas pipeline corrosion coupon apparatus according to claim 1, wherein: An observation window (18) is provided on the outside of the main body (1) of the device.

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