Corrosion-resistant gas conveying pipeline

Abstract

The utility model discloses a corrosion-resistant gas conveying pipeline, which relates to the technical field of gas conveying pipelines, and comprises a pipe body, a connecting valve, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe and a gas outlet pipe, a corrosion-resistant layer is sprayed on the inner wall of the inner pipe; the connecting pieces are detachably connected to the front end and the rear end of the pipe body and used for fixing the inner pipe into the pipe body; according to the utility model, the inner wall of the inner pipe is coated with the corrosion-resistant layer, so that the direct contact between corrosive gas and the pipeline material is effectively isolated, the corrosion resistance of the pipeline is obviously improved, and the inner pipe is arranged, so that when the inner pipe is damaged due to long-time use or unforeseen circumstances, the corrosion resistance of the pipeline is improved, and the service life of the pipeline is prolonged. The whole pipeline system does not need to be integrally replaced, only the damaged inner pipe needs to be independently replaced, the maintenance process is greatly simplified, gas can flow into the other pipe body by arranging the connecting valve, and therefore shutdown is not needed when the pipe body is replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas transmission pipelines, in particular to a corrosion-resistant gas transmission pipeline. Background Art

[0002] Gas pipelines are primarily used to transport natural gas, liquefied petroleum gas, and manufactured gas. In long-distance transportation, gas pipelines specifically transport natural gas, while in urban areas, they transport natural gas, liquefied petroleum gas, manufactured gas, and other media.

[0003] When gas transmission pipelines in existing technologies are exposed to corrosive gases, they often suffer from rapid corrosion due to the lack of adequate anti-corrosion measures on the inner walls of the pipelines. This not only shortens the service life of the pipelines, but may also cause safety hazards such as gas leaks. In addition, traditional pipeline structures are more difficult to repair and replace, especially when the interior of the pipeline is damaged, which often requires entire replacement, increasing maintenance costs and downtime. Utility Model Content

[0004] The utility model provides a corrosion-resistant gas delivery pipeline, which has the advantage of not requiring shutdown to replace the pipeline, thereby solving the problem that the prior art is difficult in repair and replacement.

[0005] In order to achieve the purpose of replacing pipelines without shutting down, the utility model provides the following technical solutions: a corrosion-resistant gas delivery pipeline, comprising a pipe body symmetrically arranged in the upper and lower parts, and also comprising: a connecting valve, which is symmetrically installed at the left and right ends of the pipe body, and is used to divert the gas so that the gas enters the designated pipe body; an inner pipe, which is detachably installed in the pipe body, and the inner wall of which is sprayed with a corrosion-resistant layer; a connecting piece, which is detachably connected to the front and rear ends of the pipe body, and is used to fix the inner pipe in the pipe body; a support frame, which is arranged on the outer wall of the connecting valve and supported on the outer wall of the pipe body, and is used to support the pipe body.

[0006] Preferably, the connecting member includes a flange and symmetrically arranged mounting blocks, the inner wall thickness of the flange is greater than the inner wall of the tube body, thereby forming a mounting groove after being connected to the tube body, the inner tube is restricted inside the inner tube by the flange, and the symmetrically arranged mounting blocks are respectively arranged on the outer wall of the flange and the outer wall of the tube body, and the symmetrically arranged mounting blocks are detachably connected by bolts, and the flange is connected to the connecting valve.

[0007] Preferably, a sealing ring is provided between the inner tube and the flange.

[0008] Preferably, the connecting valve includes a butterfly valve and a diverter pipe, the butterfly valve is symmetrically arranged up and down, the two ends of the diverter pipe are respectively connected to the butterfly valve, and the other end of the butterfly valve is connected to the flange. The driving shafts of the symmetrically arranged butterfly valves are connected to each other, and the valve closing directions of the symmetrically arranged butterfly valves are opposite, so that one butterfly valve can drive the other butterfly valve to open while closing.

[0009] Preferably, the support frame includes a fixing ring, a support rod, a sliding rod, a supporting bracket and a connecting shaft. The fixing rings are respectively sleeved on the outer wall of the butterfly valve, the support rods are symmetrically installed on the outer wall of the fixing ring, the sliding rods are slidably connected between the support rods, and the supporting bracket is arranged at the lower end of the tube body. One end of the connecting shaft is connected to the sliding rod and the other end is connected to the supporting bracket.

[0010] Preferably, an installation bin is provided in the support rod, a threaded rod is provided in the installation bin, the threaded rod is rotatably connected to the support rod, sliders are symmetrically provided at the front and rear ends of the slide rod, the outer wall of the support rod is provided with a slide groove slidably connected to the slider, the slide groove is connected to the installation bin, a threaded hole is provided on the upper end surface of the slider, and the slider is threadedly connected to the threaded rod through the threaded hole.

[0011] Preferably, the upper end surface of the support bracket is provided with an inwardly recessed groove.

[0012] Compared with the prior art, the present invention provides a corrosion-resistant gas delivery pipeline with the following beneficial effects:

[0013] 1. This corrosion-resistant gas transmission pipeline effectively isolates the corrosive gas from direct contact with the pipeline material by spraying a corrosion-resistant layer on the inner wall of the inner tube, thereby significantly improving the corrosion resistance of the pipeline and extending the service life of the pipeline. In addition, by setting up an inner tube and adopting a detachable installation method, when the inner tube is damaged due to long-term use or accidental circumstances, there is no need to replace the entire pipeline system as a whole. Only the damaged inner tube needs to be replaced separately, which greatly simplifies the maintenance process and reduces downtime and maintenance costs. In addition, by setting up a connecting valve, the gas can flow to another pipe body, so there is no need to shut down when replacing the pipe body.

[0014] 2. By setting the flange and the symmetrically arranged mounting blocks, it is easy to remove and install the inner tube, improve the convenience of maintenance, and reduce the time required for maintenance operations.

[0015] 3. By setting up butterfly valves and diverter pipes, when one of the pipes fails or is under maintenance, gas can be transported from the other pipe to ensure the continuity of gas transportation, thus eliminating the need to shut down for maintenance.

[0016] 4. By setting a fixing ring, support rod, sliding rod, support bracket and connecting shaft, it is convenient to support the pipe body, enhance the pipeline's ability to resist external forces, ensure the stability of the pipeline during gas transportation, and reduce the risk of pipeline damage caused by vibration or external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the tube body of the utility model;

[0019] Figure 3 This is a schematic diagram of the support structure of the utility model;

[0020] Figure 4 This is a cross-sectional view of the support frame of the utility model;

[0021] Figure 5 It is a schematic diagram of the slide bar structure of the utility model.

[0022] In the figure: 1. Pipe body; 2. Connecting valve; 21. Butterfly valve; 22. Diverter pipe; 3. Inner pipe; 31. Corrosion-resistant layer; 32. Sealing ring; 4. Connecting piece; 41. Flange; 42. Mounting block; 5. Support frame; 51. Fixing ring; 52. Support rod; 521. Mounting compartment; 522. Threaded rod; 523. Slide groove; 53. Slide rod; 531. Slider; 532. Threaded hole; 54. Support frame; 541. Groove; 55. Connecting shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0024] See also Figure 1-Figure 5 The utility model discloses a corrosion-resistant gas delivery pipeline, including a pipe body 1 symmetrically arranged in an upper and lower manner, and also includes: a connecting valve 2, which is symmetrically installed at the left and right ends of the pipe body 1, and is used to divert gas so that the gas enters the designated pipe body 1; an inner pipe 3, which is detachably installed in the pipe body 1, and the inner wall of which is sprayed with a corrosion-resistant layer 31; a connecting piece 4, which is detachably connected to the front and rear ends of the pipe body 1, and is used to fix the inner pipe 3 in the pipe body 1; a support frame 5, which is arranged on the outer wall of the connecting valve 2 and supported on the outer wall of the pipe body 1, and is used to hold up the pipe body 1.

[0025] The above design effectively isolates the corrosive gas from direct contact with the pipeline material by spraying the corrosion-resistant layer 31 on the inner wall of the inner tube 3, thereby significantly improving the corrosion resistance of the pipeline and extending the service life of the pipeline. By setting the inner tube 3 and adopting a detachable installation method, when the inner tube 3 is damaged due to long-term use or accidental circumstances, there is no need to replace the entire pipeline system as a whole. Only the damaged inner tube 3 needs to be replaced separately, which greatly simplifies the maintenance process and reduces downtime and maintenance costs. By setting the connecting valve 2, the gas can flow to another pipe body 1, so that there is no need to shut down when replacing the pipe body 1.

[0026] See also Figure 1 、 Figure 2 The connecting member 4 includes a flange 41 and a symmetrically arranged mounting block 42. The inner wall thickness of the flange 41 is greater than the inner wall of the tube body 1, so that a mounting groove is formed after being connected to the tube body 1. The inner tube 3 is restricted inside the inner tube 3 by the flange 41. The symmetrically arranged mounting blocks 42 are respectively arranged on the outer wall of the flange 41 and the outer wall of the tube body 1. The symmetrically arranged mounting blocks 42 are detachably connected by bolts. The flange 41 is connected to the connecting valve 2. By providing the flange 41 and the symmetrically arranged mounting blocks 42, the inner tube 3 can be easily removed and installed, which improves the convenience of maintenance and reduces the time required for maintenance operations. A sealing ring 32 is provided between the inner tube 3 and the flange 41. By providing the sealing ring 32, the tightness between the flange 41 and the inner tube 3 can be improved to prevent gas leakage.

[0027] See also Figure 1 、 Figure 2 The connecting valve 2 includes a butterfly valve 21 and a diverter pipe 22. The butterfly valve 21 is symmetrically arranged up and down. The two ends of the diverter pipe 22 are respectively connected to the butterfly valve 21, and the other end of the butterfly valve 21 is connected to the flange 41. The driving shafts of the symmetrically arranged butterfly valves 21 are connected to each other, and the valve closing directions of the symmetrically arranged butterfly valves 21 are opposite, so that one butterfly valve 21 can drive the other butterfly valve 21 to open while closing. By setting the butterfly valve 21 and the diverter pipe 22, when one of the pipe bodies 1 fails or is maintained, it is convenient to transport from the other pipe body 1, thereby ensuring the continuity of gas transportation, thereby eliminating the need for shutdown maintenance. Example 2

[0028] Based on the above embodiment 1, please refer to Figure 3-Figure 5The support frame 5 includes a fixing ring 51, a supporting rod 52, a sliding rod 53, a supporting bracket 54 and a connecting shaft 55. The fixing ring 51 is respectively sleeved on the outer wall of the butterfly valve 21, and the supporting rod 52 is symmetrically installed on the outer wall of the fixing ring 51. The sliding rod 53 is slidably connected between the supporting rods 52, and the supporting bracket 54 is arranged at the lower end of the pipe body 1. One end of the connecting shaft 55 is connected to the sliding rod 53 and the other end is connected to the supporting bracket 54. By arranging the fixing ring 51, the supporting rod 52, the sliding rod 53, the supporting bracket 54 and the connecting shaft 55, it is convenient to support the pipe body 1, enhance the pipeline's ability to resist external forces, and ensure the stability of the pipeline during gas transportation, thereby reducing the risk of pipeline damage caused by vibration or external forces. The support rod 52 is provided with a mounting chamber 521, and the mounting chamber 521 is provided with a threaded rod 522. The screw rod 522 is rotatably connected to the support rod 52, and the front and rear ends of the slide rod 53 are symmetrically provided with sliders 531. The outer wall of the support rod 52 is provided with a slide groove 523 slidably connected to the slide groove 523. The slide groove 523 communicates with the installation chamber 521. The upper end surface of the slide block 531 is provided with a threaded hole 532. The slide block 531 is threadedly connected to the screw rod 522 through the threaded hole 532. By providing the screw rod 522, the slider 531, the slide groove 523 and the threaded hole 532, the screw rod 522 can be rotated to make the support bracket 54 move up and down. After the lower tube body 1 is removed, it is convenient to lower the tube body 1, and it can also be raised during installation, which facilitates the installation of the tube body 1. The upper end surface of the support bracket 54 is provided with an inwardly recessed groove 541. By providing the groove 541, the tube body 1 can be prevented from rolling out of the support bracket 54 after removal.

[0029] The working principle and use process of this utility model:

[0030] During installation, the fixing ring 51 is sleeved on the outer wall of the butterfly valve 21 to ensure that the fixing ring 51 is stable, and the support rod 52 is symmetrically installed on the outer wall of the fixing ring 51 to ensure that the position of the support rod 52 is accurate and stable, and the sliding rod 53 is slidably connected between the support rods 52 to ensure that the sliding rod 53 can slide smoothly, and the support bracket 54 is set at the lower end of the pipe body 1, and the sliding rod 53 is connected to the support bracket 54 through the connecting shaft 55. As needed, the height of the support bracket 54 is adjusted by rotating the threaded rod 522 to ensure that the pipe body 1 can be placed stably, and the butterfly valve 21 is symmetrically set at the two ends of the diversion pipe 22 up and down to ensure that the valve closing directions of the butterfly valve 21 are opposite, and the other end of the butterfly valve 21 is connected to the flange 41 to ensure that the connection is tight and there is no leakage, and check whether the driving shafts of the butterfly valve 21 are connected to each other.

[0031] And test whether one butterfly valve 21 can drive the other butterfly valve 21 to open when it is closed, install the inner tube 3 detachably in the tube body 1, ensure that the corrosion-resistant layer 31 on the inner wall of the inner tube 3 is intact, install the connector 4 at the front and rear ends of the tube body 1, including a flange 41 and a symmetrically arranged mounting block 42, restrict the inner tube 3 inside the tube body 1 through the flange 41, ensure that the position of the inner tube 3 is accurate, install bolts and nuts between the flange 41 and the mounting block 42, and ensure that the connector 4 is tightened without loosening.

[0032] Install the sealing ring 32 between the inner tube 3 and the flange 41 to ensure good sealing. After the installation is completed, perform a pressure test on the pipeline system to ensure that there is no leakage in the pipeline, check whether all connecting parts are tightened and not loose, ensure the stability of the pipeline system, debug the switching function of the connecting valve 2, and ensure that the butterfly valve 21 can be opened and closed normally. During use, when the inner tube 3 is damaged due to long-term use or accidental circumstances, close the relevant butterfly valve 21 to allow the gas to flow out through the other pipe body 1, then remove the pipe body 1 that needs to be repaired, place the pipe body 1 in the groove 541, and then rotate the threaded rod 522 to lower the support bracket 54 to facilitate inspection and replacement. When installing, place the new pipe body 1 in the groove 541, and then rotate the threaded rod 522 to raise the support plate so that the flange 41 on the pipe body 1 is aligned with the butterfly valve 21, and then fix the flange 41 to the butterfly valve 21 to complete the installation.

Claims

1. A corrosion-resistant gas delivery pipeline, comprising a pipe body (1) symmetrically arranged in an upper and lower direction, characterized in that: Also includes: Connecting valves (2) are symmetrically mounted on the left and right ends of the tube body (1) and are used to divert gas so that the gas enters a designated portion of the tube body (1); An inner tube (3) which is detachably mounted in the tube body (1) and has an inner wall sprayed with a corrosion-resistant layer (31); A connecting piece (4) detachably connected to the front and rear ends of the tube body (1) and used to fix the inner tube (3) inside the tube body (1); A support frame (5) is arranged on the outer wall of the connecting valve (2) and supported on the outer wall of the pipe body (1) for supporting the pipe body (1).

2. The corrosion-resistant gas delivery pipeline according to claim 1, characterized in that: The connecting member (4) comprises a flange (41) and symmetrically arranged mounting blocks (42). The inner wall thickness of the flange (41) is greater than the inner wall thickness of the tube body (1), so that a mounting groove is formed after being connected to the tube body (1). The inner tube (3) is restricted inside the inner tube (3) by the flange (41). The symmetrically arranged mounting blocks (42) are respectively arranged on the outer wall of the flange (41) and the outer wall of the tube body (1). The symmetrically arranged mounting blocks (42) are detachably connected by bolts. The flange (41) is connected to the connecting valve (2).

3. The corrosion-resistant gas delivery pipeline according to claim 2, characterized in that: A sealing ring (32) is provided between the inner tube (3) and the flange (41).

4. The corrosion-resistant gas delivery pipeline according to claim 2, characterized in that: The connecting valve (2) comprises a butterfly valve (21) and a diverter pipe (22), wherein the butterfly valve (21) is symmetrically arranged in an upper and lower direction, and the two ends of the diverter pipe (22) are respectively connected to the butterfly valve (21), and the other end of the butterfly valve (21) is connected to the flange (41). The driving shafts of the symmetrically arranged butterfly valves (21) are connected to each other, and the valve closing directions of the symmetrically arranged butterfly valves (21) are opposite, so that one butterfly valve (21) can drive the other butterfly valve (21) to open while closing.

5. The corrosion-resistant gas delivery pipeline according to claim 4, characterized in that: The support frame (5) includes a fixed ring (51), a support rod (52), a sliding rod (53), a support bracket (54) and a connecting shaft (55), wherein the fixed ring (51) is respectively sleeved on the outer wall of the butterfly valve (21), the support rod (52) is symmetrically installed on the outer wall of the fixed ring (51), the sliding rod (53) is slidably connected between the support rods (52), the support bracket (54) is arranged at the lower end of the pipe body (1), and one end of the connecting shaft (55) is connected to the sliding rod (53) and the other end is connected to the support bracket (54).

6. The corrosion-resistant gas delivery pipeline according to claim 5, characterized in that: The support rod (52) is provided with an installation chamber (521), and the installation chamber (521) is provided with a threaded rod (522), and the threaded rod (522) is rotatably connected to the support rod (52). Slide blocks (531) are symmetrically provided at the front and rear ends of the slide bar (53), and the outer wall of the support rod (52) is provided with a slide groove (523) slidably connected to the slide block (531), and the slide groove (523) is connected to the installation chamber (521). The upper end surface of the slide block (531) is provided with a threaded hole (532), and the slide block (531) is threadedly connected to the threaded rod (522) through the threaded hole (532).

7. The corrosion-resistant gas delivery pipeline according to claim 5, characterized in that: The upper end surface of the support bracket (54) is provided with an inwardly recessed groove (541).

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