Pressure pipeline corrosion detection device

Abstract

The utility model provides a pressure pipeline corrosion detection device, and belongs to the technical field of pipeline corrosion detection. Comprising an oil-gas conveying pipeline, a first connecting pipe, a pressurizing pipe and a second connecting pipe are sequentially connected between pipe bodies of the oil-gas conveying pipeline through flanges, a first branch pipe and a second branch pipe are arranged on the side walls of pipe bodies of the first connecting pipe and the pressurizing pipe correspondingly, and the ends, away from a main pipeline, of the first branch pipe and the second branch pipe are connected with detection pipes through flanges; a first valve is arranged on a pipe body of the first branch pipe, and a second valve is arranged on a pipe body of the second branch pipe. According to the utility model, the detection pipe is arranged and is communicated with the main pipeline, so that the internal environment of the main pipeline is simulated while oil and gas transmission is undertaken, and when the internal corrosion condition of the pipeline needs to be inspected regularly, the first valve and the second valve are closed, and the detection pipe is detached to detect the corrosion degree of the inner wall; the oil and gas conveying pipeline can be detected without disconnecting the main pipeline, and the oil and gas exploitation efficiency cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline corrosion detection, and particularly relates to a corrosion detection device for a pressure pipeline. Background Art

[0002] With the increase of the online service life of oil and gas transportation pipelines, the pipelines are in a complex environment of darkness and humidity for a long time, and due to the acidity and alkalinity of oil and gas itself, the probability of corrosion of oil and gas transportation pipelines is increasing.

[0003] At present, for the regular inspection of the internal corrosion of oil and gas pipelines (i.e., pressure pipelines), it is necessary to disconnect the oil and gas transportation, and then sample and disconnect the oil and gas transportation pipeline section to detect the corrosion degree of the pipeline inner wall. The operation is relatively inconvenient, and disconnecting the oil and gas transportation means stopping work and production, which has an impact on the oil and gas production efficiency.

[0004] Therefore, the present application provides a corrosion detection device for a pressure pipeline to meet the demand. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a corrosion detection device for a pressure pipeline to solve the problem that the existing regular inspection of the internal corrosion of oil and gas pipelines (i.e., pressure pipelines) needs to disconnect the oil and gas transportation, then sample and disconnect the oil and gas transportation pipeline section to detect the corrosion degree of the pipeline inner wall. The operation is relatively inconvenient, and disconnecting the oil and gas transportation means stopping work and production, which has an impact on the oil and gas production efficiency.

[0006] To solve the above technical problem, the utility model provides the following technical solutions:

[0007] A corrosion detection device for a pressure pipeline includes an oil and gas transportation pipeline. A first connecting pipe, a pressurizing pipe, and a second connecting pipe are sequentially connected between the pipe bodies of the oil and gas transportation pipeline through flanges. A first branch pipe and a second branch pipe are respectively arranged on the side walls of the pipe bodies of the first connecting pipe and the pressurizing pipe. The ends of the first branch pipe and the second branch pipe far away from the main pipeline are connected with a detection pipe through flanges. A first valve is arranged on the pipe body of the first branch pipe, and a second valve is arranged on the pipe body of the second branch pipe.

[0008] Preferably, the inner diameters of the oil and gas transportation pipeline, the first connecting pipe, and the second connecting pipe, as well as the thickness of the pipeline side walls, are the same, and the same material is used.

[0009] Preferably, the side wall of the pressurizing pipe is provided with an arc-shaped pipe wall, and the inner diameter of the arc-shaped pipe wall is smaller than the inner diameter of the pipe wall of the oil and gas transportation pipeline.

[0010] Preferably, the thickness of the arc-shaped pipe wall is greater than the thickness of the pipe wall of the oil and gas transportation pipeline.

[0011] Preferably, the materials used for the first branch pipe, the second branch pipe, and the detection pipe are the same as those of the oil and gas transmission pipeline, and the wall thicknesses of the first branch pipe, the second branch pipe, and the detection pipe are greater than the wall thickness of the oil and gas transmission pipeline.

[0012] Preferably, the detection pipe has a U-shaped structure.

[0013] Preferably, both the first valve and the second valve are gate valves.

[0014] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0015] 1. By providing a detection pipe that is interconnected with the main pipeline, while undertaking the oil and gas transmission, it simulates the internal environment of the main pipeline. When it is necessary to regularly inspect the internal corrosion of the pipeline, by closing the first valve and the second valve and removing the detection pipe for inner wall corrosion degree detection, there is no need to disconnect the main pipeline, i.e., the oil and gas transmission pipeline, for detection, and it will not affect the oil and gas production efficiency.

[0016] 2. By setting the inner diameter of the booster pipe to be smaller than the inner diameter of the oil and gas transmission pipeline, when the oil and gas pass through the booster pipe section, due to the reduction of the channel inner diameter, the pressure increases, enabling more oil and gas to pass through the branch pipes and the detection pipe, thereby improving the synchronization degree between the inside of the detection pipe and the internal environment of the oil and gas transmission pipeline and enhancing the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the wall of the booster pipe of the present utility model.

[0020] In the figure: 1. Oil and gas transmission pipeline; 2. First connecting pipe; 3. Booster pipe; 4. Second connecting pipe; 5. First branch pipe; 6. Second branch pipe; 7. First valve; 8. Second valve; 9. Detection pipe; 10. Arc-shaped pipe wall.

[0021] As shown in the figure, in order to clearly show the structure of the embodiments of the present utility model, specific structures and devices are marked in the figure, but this is only for schematic purposes and is not intended to limit the present utility model to this specific structure, device, and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still included within the scope of the appended claims. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will describe in detail a pressure pipeline corrosion detection device provided by the present utility model in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments, and are not intended to specifically limit the present utility model.

[0023] As Figure 1 - Figure 2 shown, an embodiment of the present utility model provides a pressure pipeline corrosion detection device, including an oil and gas transmission pipeline 1. The pipe bodies of the oil and gas transmission pipeline 1 are sequentially connected with a first connecting pipe 2, a booster pipe 3, and a second connecting pipe 4 through flanges. First branch pipes 5 and second branch pipes 6 are respectively arranged on the side walls of the pipe bodies of the first connecting pipe 2 and the booster pipe 3. The ends of the first branch pipes 5 and the second branch pipes 6 far away from the main pipeline are connected with a detection pipe 9 through flanges. A first valve 7 is arranged on the pipe body of the first branch pipe 5, and a second valve 8 is arranged on the pipe body of the second branch pipe 6.

[0024] By arranging the detection pipe 9 and communicating with the main pipeline, while undertaking the oil and gas transmission, it simulates the internal environment of the main pipeline. When it is necessary to regularly inspect the internal corrosion situation of the pipeline, by closing the first valve 7 and the second valve 8, the detection pipe 9 can be removed for inner wall corrosion degree detection, without disconnecting the main pipeline, that is, the oil and gas transmission pipeline 1 for detection, and it will not affect the oil and gas production efficiency.

[0025] As Figure 1 and Figure 2 shown, the inner diameters and the side wall thicknesses of the oil and gas transmission pipeline 1, the first connecting pipe 2, and the second connecting pipe 4 are the same, and the same material is used; an arc-shaped pipe wall 10 is arranged on the side wall of the booster pipe 3, and the inner diameter of the arc-shaped pipe wall 10 is smaller than the inner diameter of the pipe wall of the oil and gas transmission pipeline 1.

[0026] Through this setting, when the oil and gas pass through the section of the booster pipe 3, due to the reduction of the channel inner diameter, the pressure increases, so that more oil and gas pass through the branch pipes and the detection pipe 9, thereby improving the synchronization degree between the inside of the detection pipe 9 and the internal environment of the oil and gas transmission pipeline 1 and improving the detection accuracy.

[0027] The thickness of the arc-shaped pipe wall 10 is greater than the thickness of the pipe wall of the oil and gas transmission pipeline 1.

[0028] Since the internal pressure of the booster pipe 3 is relatively large, and due to the setting of the arc-shaped pipe wall 10, the flow rate of the oil and gas is relatively fast when passing through this section, and the contact area with the pipe wall of the booster pipe 3 is relatively large, so that the corrosion degree of the pipe wall of the booster pipe 3 is relatively high. Therefore, by setting a thicker pipe wall, the service life of the booster pipe 3 is improved.

[0029] The materials used for the first branch pipe 5, the second branch pipe 6, and the detection pipe 9 are the same as those of the oil and gas transmission pipeline 1, and the wall thicknesses of the first branch pipe 5, the second branch pipe 6, and the detection pipe 9 are greater than the wall thickness of the oil and gas transmission pipeline 1. The inner diameters of the first branch pipe 5, the second branch pipe 6, and the detection pipe 9 are the same and smaller than the inner diameter of the oil and gas transmission pipeline 1.

[0030] With this setting, it is avoided that the corrosion rate of the branch pipe structure is faster than that of the main pipeline, resulting in an oil and gas leakage accident.

[0031] As Figure 1 shown, the detection pipe 9 is in a U-shaped structure for easy assembly; both the first valve 7 and the second valve 8 are gate valves to ensure the sealing effect when the valves are closed.

[0032] In the technical solution provided by the present utility model, when detecting the corrosion degree of the oil and gas transmission pipeline 1, first close the first valve 7 and the second valve 8, then disconnect the flange connection between the detection pipe 9 and the first branch pipe 5 and the second branch pipe 6, remove the detection pipe 9, and by visually observing the corrosion degree and the thickness of the corrosion layer on the inner side wall of the detection pipe 9, the corrosion degree of the inner side wall of the oil and gas transmission pipeline 1 can be judged.

[0033] The present utility model covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of the present utility model. To enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the above preferred embodiments of the present utility model, and those skilled in the art can fully understand the present utility model without these detailed descriptions. In addition, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present utility model.

[0034] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A pressure pipeline corrosion detection device, characterized in that: include: An oil and gas transmission pipeline (1), wherein a first connecting pipe (2), a boosting pipe (3), and a second connecting pipe (4) are sequentially connected between the pipe bodies of the oil and gas transmission pipeline (1) via flanges; a first branch pipe (5) and a second branch pipe (6) are respectively provided on the side walls of the pipe bodies of the first connecting pipe (2) and the boosting pipe (3); a detection pipe (9) is connected to the ends of the first branch pipe (5) and the second branch pipe (6) away from the main pipe via flanges; a first valve (7) is provided on the pipe body of the first branch pipe (5), and a second valve (8) is provided on the pipe body of the second branch pipe (6).

2. The pressure pipeline corrosion detection device according to claim 1 is characterized in that: The oil and gas transmission pipeline (1), the first connecting pipe (2), and the second connecting pipe (4) have the same inner diameter and the same thickness of the pipeline side wall, and are made of the same material.

3. The pressure pipeline corrosion detection device according to claim 1 is characterized in that: The side wall of the boosting pipe (3) is provided with an arc-shaped pipe wall (10), and the inner diameter of the arc-shaped pipe wall (10) is smaller than the inner diameter of the pipe wall of the oil and gas transmission pipeline (1).

4. The pressure pipeline corrosion detection device according to claim 3 is characterized in that: The thickness of the arc-shaped pipe wall (10) is greater than the thickness of the pipe wall of the oil and gas transmission pipeline (1).

5. The pressure pipeline corrosion detection device according to claim 1 is characterized in that: The material used for the first branch pipe (5), the second branch pipe (6) and the detection pipe (9) is the same as that of the oil and gas transmission pipeline (1), and the wall thickness of the first branch pipe (5), the second branch pipe (6) and the detection pipe (9) is greater than the wall thickness of the oil and gas transmission pipeline (1).

6. The pressure pipeline corrosion detection device according to claim 1, characterized in that: The detection tube (9) has a U-shaped structure.

7. The pressure pipeline corrosion detection device according to claim 1, characterized in that: The first valve (7) and the second valve (8) are both gate valves.

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