An anode rod adjustment device for slowing down pipeline corrosion and its working method

Abstract

The present invention belongs to the field of oil and gas pipelines, and specifically relates to an anode rod adjustment device for slowing down pipeline corrosion and a working method thereof. The device includes a bracket, which is movably inserted into the pipeline, and an anode rod is fixedly provided at the end of the bracket. The bracket is used to fix the anode rod and simultaneously support the device. The position of the anode rod can be adjusted by the bracket so that the anode rod contacts the pipeline, thereby improving the utilization rate of the anode rod. The anode rod contacts the bottom surface of the inner side of the pipeline, and the anode rod is consumed by corrosion, thereby protecting the pipeline. A cable is inserted into the bracket, one end of the cable is connected to the anode rod, and the other end of the cable is connected to a test meter. The pipeline is connected to the test meter through a wire. The cable, anode rod, pipeline and test meter are sequentially connected in series to form a closed circuit for detecting whether the anode rod is in contact with the pipeline.

Description

Technical Field

[0001] The invention belongs to the field of oil and gas pipelines, and particularly relates to an anode rod adjusting device for slowing down pipeline corrosion and a working method thereof. Background Art

[0002] Pipeline transportation is a crucial means of production in oil and gas field surface projects. Ensuring safe and reliable operation of oil and gas pipelines is crucial for the development of the industry. During oil and gas transportation, corrosive substances, acidic gases, and impurities such as rust and sand can easily cause corrosion within the pipeline walls. This can lead to minor corrosion damage, while more serious consequences include oil and gas leaks and even serious accidents. Therefore, internal pipeline corrosion is a critical issue in corrosion prevention and control.

[0003] Currently, the main methods for protecting pipelines from internal corrosion include selecting corrosion-resistant materials, purifying the pipeline medium, adding corrosion inhibitors, and cathodic protection. Different internal corrosion protection methods can be used depending on the specific medium being transported and the environment. Cathodic protection for pipeline internal corrosion can be categorized into sacrificial anode and forced current methods. The sacrificial anode method uses a metal material with a more negative potential than the protected metal to connect the pipeline to the anode rod. As the anode rod dissolves and corrodes under the cathodic protection system, the pipeline is protected.

[0004] In the process of cooperating with cathodic protection pipelines, anode rods are constantly corroded and consumed as they are used over time. In order to ensure the effective operation of the cathodic protection system, corroded anode rods must be checked or replaced in a timely manner. When the anode rods are consumed and no longer in contact with the bottom of the pipeline, they need to be removed and replaced in a timely manner. Moreover, the anode rods are not completely and evenly corroded and consumed. Anode rods that need to be replaced are often not completely consumed, and there are often remaining parts that cannot be used anymore, resulting in a certain amount of waste and increased economic costs. At the same time, since it is impossible to accurately know when the anode rods are consumed to the point where they are no longer in contact with the bottom of the pipeline, the daily maintenance of the cathodic protection device is more difficult. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an anode rod adjustment device for slowing down pipeline corrosion and a working method thereof. The device can effectively slow down pipeline corrosion, the device facilitates the position adjustment and replacement of the anode rod, and the method facilitates the consumption detection of the anode rod, thereby improving the utilization rate of the anode rod.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] An anode rod adjustment device for slowing down pipeline corrosion includes a bracket, which is movably installed on the pipeline. An anode rod is fixedly installed at the end of the bracket, and the anode rod contacts the inner bottom surface of the pipeline. A cable is inserted into the bracket, one end of the cable is connected to the anode rod, and the other end of the cable is connected to a detection meter. The pipeline is connected to the detection meter through a wire.

[0008] A movable sleeve on the bracket is provided with a connected base, and the connected base is fixedly arranged on the outer wall of the pipeline.

[0009] The integrated base is provided with an internal thread, and the bracket is provided with an external thread engaged with the integrated base.

[0010] The bracket is provided with a protective cover, which is sleeved on the integrated base.

[0011] The integrated base is provided with an external thread, and the interior of the protective cover is provided with an internal thread engaged with the integrated base.

[0012] The bracket is provided with a handle, and the handle is provided with a through hole for passing the cable.

[0013] The bracket is a metal tube.

[0014] An insulating sleeve is provided on the bracket, and an anti-reverse structure is provided on the insulating sleeve.

[0015] The insulating sleeve is located between the anode rod and the external thread of the bracket.

[0016] A method for operating an anode rod adjusting device for slowing down pipeline corrosion comprises the following steps:

[0017] S1. Prepare a through hole in the pipe for the bracket in advance, insert the bracket and anode rod through the through hole in the pipe, and make the anode rod contact the bottom surface of the pipe;

[0018] S2. Connect the cable, anode rod, pipeline, and test meter in series to form a closed circuit. Determine whether the anode rod is in contact with the pipeline based on the current on the test meter.

[0019] S3. If the anode rod is not in contact with the pipeline, insert the anode rod downward through the bracket until the anode rod is in contact with the pipeline.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention includes a bracket, which is movably inserted into the pipeline. An anode rod is fixedly provided at the end of the bracket. The bracket is used to fix the anode rod and simultaneously supports the device. The position of the anode rod can be adjusted by the bracket so that the anode rod contacts the pipeline, thereby improving the utilization rate of the anode rod. At the same time, if the anode rod is consumed and no longer contacts the bottom of the pipeline, the remaining anode rod can be taken out through the bracket and replaced with a new anode rod, thereby facilitating the replacement of the anode rod. The anode rod contacts the bottom surface of the inner side of the pipeline and protects the pipeline by consuming the anode rod through corrosion. A cable is inserted into the bracket, one end of the cable is connected to the anode rod, and the other end of the cable is connected to a test meter. The pipeline is connected to the test meter via a wire. The cable, anode rod, pipeline and test meter are sequentially connected in series to form a closed circuit for detecting whether the anode rod is in contact with the pipeline and for real-time monitoring of the anode rod consumption, thereby facilitating timely adjustment of the anode rod and reducing the difficulty of daily maintenance.

[0022] Furthermore, a rotatable sleeve is provided on the bracket, and the rotatable sleeve is fixed on the outer wall of the pipe. The rotatable sleeve is used to improve the stability of the bracket and the anode rod, and at the same time, the rotatable sleeve can play a certain sealing role at the contact point between the bracket and the pipe.

[0023] Furthermore, a protective cover is provided on the bracket, and the protective cover is sleeved on the one-piece base, thereby further improving the sealing effect of the one-piece base.

[0024] Furthermore, an insulating sleeve is provided on the bracket, and an anti-reverse structure is provided on the insulating sleeve. The insulating sleeve is used to prevent the bracket from being corroded, and the anti-reverse structure is used to prevent the bracket from moving in reverse, and at the same time plays a certain sealing role.

[0025] The method of the present invention pre-institutes a through-hole in the pipeline for inserting a bracket. The bracket and anode rod are then inserted through the through-hole in the pipeline, allowing the anode rod to contact the inner bottom surface of the pipeline. The through-hole in the pipeline facilitates the insertion and removal of the bracket. The cable, anode rod, pipeline, and test meter are sequentially connected in series to form a closed circuit. The current on the test meter determines whether the anode rod is in contact with the pipeline. If the anode rod is not in contact with the pipeline, the anode rod is lowered through the bracket until it contacts the pipeline. This method facilitates the detection of anode rod consumption and improves anode rod utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the assembly of the handle and metal bracket of the present invention;

[0028] Figure 3 for Figure 1 Schematic diagram of the anti-reversal structure of region a in its natural state;

[0029] Figure 4 for Figure 1 Structural schematic diagram of the anti-reverse structure in area a when under stress.

[0030] Among them, 1. Protective cover; 2. One-piece base; 3. Bracket; 4. Insulation sleeve; 5. Cable; 6. Anode rod; 7. Handle; 8. Pipe; 9. Anti-reverse structure; 10. Test table; 11. Threaded sleeve. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] like Figure 1 As shown, an anode rod adjustment device for slowing down pipeline corrosion includes a bracket 3, which is movably installed on a pipeline 8. An anode rod 6 is fixedly installed at the end of the bracket 3, and the anode rod 6 contacts the inner bottom surface of the pipeline 8. A cable 5 is inserted into the bracket 3, one end of the cable 5 is connected to the anode rod 6, and the other end of the cable 5 is connected to a test meter 10. The pipeline 8 is connected to the test meter 10 through a wire.

[0033] Preferably, the present invention includes a bracket 3 that is movably mounted on the pipe 8. An anode rod 6 is fixedly mounted at the end of the bracket 3. The bracket 3 is used to secure the anode rod 6 and also supports the device. When the anode rod 6 is corroded and consumed, causing it to lose contact with the pipe 8, the bracket 3 is inserted into the pipe until the anode rod 6 makes contact with the pipe 8. This allows the position of the anode rod 6 to be adjusted, thereby improving the utilization rate of the anode rod. Furthermore, if the anode rod is consumed and no longer contacts the bottom of the pipe, the remaining anode rod can be removed through the bracket and replaced with a new one, facilitating replacement of the anode rod. The anode rod 6 contacts the inner bottom surface of the pipe 8, corroding and consuming the anode rod 6 and thereby protecting the pipe 8. A cable 5 is mounted inside the bracket 3. One end of the cable 5 is connected to the anode rod 6, and the other end of the cable 5 is connected to a test meter 10. The pipe 8 is connected to the test meter 10 via a wire. The cable 5, anode rod 6, pipe 8, and test meter 10 are sequentially connected in series to form a closed circuit for detecting whether the anode rod 6 is in contact with the pipe 8. By reading the current reading of the detection meter 10, it is determined whether the anode rod 6 is in contact with the pipeline 8, and then it is determined whether the position of the anode rod 6 needs to be adjusted, which facilitates timely adjustment of the anode rod and reduces the difficulty of daily maintenance.

[0034] Preferably, the detection meter 10 is a multimeter, and during the monitoring process, whether the anode rod 6 is in contact with the pipeline 8 can be determined by the current reading of the multimeter.

[0035] Preferably, Figure 1As shown, a conjoined base 2 is movably mounted on the bracket 3 and fixed to the outer wall of the pipe 8. The conjoined base 2 serves to enhance the stability of the bracket 3, preventing the fluid inside the pipe 8 from impacting the anode rod 6 and causing it to shift, thereby separating from the pipe 8. The conjoined base 2 also provides a seal at the contact point between the bracket 3 and the pipe 8.

[0036] like Figure 1 and Figure 2 As shown, the integrated base 2 is provided with an internal thread, and the bracket 3 is provided with an external thread that engages with the integrated base 2. When adjusting the position of the anode rod 6, the anode rod 6 can be moved up and down by rotating the bracket 3, thereby controlling the position of the anode rod 6 in the pipe 8. The bracket 3 and the integrated base 2 are engaged with each other through threads, which facilitates the adjustment and position fixation of the bracket 3. At the same time, when the anode rod 6 needs to be replaced, the bracket 3 and the anode rod 6 are removed as a whole by rotating the bracket 3, and a new anode rod 6 is replaced. Then, the anode rod 6 and the bracket 3 are inserted into the pipe 8, and the bracket 3 and the base 2 are tightened until the anode rod 6 contacts the bottom of the pipe 8.

[0037] Preferably, Figure 2 As shown, a threaded sleeve 11 is fixedly mounted on the bracket 3. The threaded sleeve 11 is provided with an external thread that engages with the internal thread of the integrated base 2. That is, the inner hole of the integrated base 2 is larger than the outer diameter of the bracket 3, which facilitates the insertion and removal of the bracket 3 and the anode rod 6, and facilitates the installation of the device and the subsequent replacement of the anode rod 6.

[0038] Preferably, Figure 1 As shown, a protective cover 1 is provided on the bracket 3, and the protective cover 1 is sleeved on the integrated base 2, further enhancing the sealing effect of the integrated base 2, avoiding leakage of internal media, and preventing external media from entering the interior of the pipeline 8.

[0039] The integrated base 2 is provided with an external thread, and the protective cover 1 is internally provided with an internal thread engaged with the integrated base 2 .

[0040] like Figure 1 As shown, a handle 7 is provided on the bracket 3, and a through hole is opened on the handle 7 for passing the cable 5. The bracket 3 is rotated by the handle 7, and the position of the anode rod 6 is adjusted through the bracket 3.

[0041] The bracket 3 is a metal tube, and the cable 5 is passed through the inside of the metal tube.

[0042] Preferably, Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the bracket 3 is covered with an insulating sleeve 4, which is used to prevent the bracket 3 from being corroded and ensure the stability of the device. The insulating sleeve 4 is provided with an anti-reverse structure 9, which is used to prevent the bracket 3 from moving in the reverse direction, avoiding the internal pressure of the pipe 8 causing the bracket 3 to rebound outward, thereby causing the anode rod 6 to separate from the pipe 8. At the same time, the anti-reverse structure 9 can play a certain sealing role. Figure 3 and Figure 4 Schematic diagrams of the anti-reverse structure 9 in different states are shown.

[0043] Preferably, the insulating sleeve 4 is made of nylon, which is oil-resistant and high-temperature-resistant, and has certain mechanical strength and toughness.

[0044] Preferably, the anti-reverse structure 9 is a barbed tooth-shaped structure.

[0045] The insulating sleeve 4 is located between the anode rod 6 and the external thread of the bracket 3 , that is, the insulating sleeve 4 is located between the anode rod 6 and the threaded sleeve 11 .

[0046] A method for operating an anode rod adjusting device for slowing down pipeline corrosion comprises the following steps:

[0047] S1. A through hole for inserting the bracket 3 is opened in advance on the pipe 8, and the bracket 3 and the anode rod 6 are inserted through the through hole on the pipe 8 so that the anode rod 6 contacts the inner bottom surface of the pipe 8;

[0048] S2. The cable 5, the anode rod 6, the pipe 8 and the test table 10 are sequentially connected in series to form a closed circuit, and the current on the test table 10 is used to determine whether the anode rod 6 is in contact with the pipe 8;

[0049] S3. If the anode rod 6 is not in contact with the pipe 8, the anode rod 6 is inserted downward through the bracket 3 until the anode rod 6 is in contact with the pipe 8.

[0050] Preferably, the method of the present invention opens a through hole in the pipe 8 in advance for inserting the bracket 3, and inserts the bracket 3 and the anode rod 6 through the through hole in the pipe 8 so that the anode rod 6 contacts the inner bottom surface of the pipe 8; by opening a through hole in the pipe 8, the insertion and removal of the bracket 3 are facilitated. The cable 5, the anode rod 6, the pipe 8 and the test meter 10 are sequentially connected in series to form a closed circuit, and whether the anode rod 6 is in contact with the pipe 8 is judged based on the current on the test meter 10. If the anode rod 6 is not in contact with the pipe 8, the anode rod 6 is inserted downward through the bracket 3 until the anode rod 6 is in contact with the pipe 8. This method facilitates the consumption detection of the anode rod and improves the utilization rate of the anode rod 6. The method is simple to operate and can realize real-time monitoring of the corrosion protection effect in the oil and gas pipeline, reducing the time for daily maintenance and detection. At the same time, the test results can be used as a basis for adjusting the position of the anode rod 6. When it is found that the anode rod is consumed to the point of not contacting the pipeline, the bracket 3 is used to push the anode rod 6 toward the inner wall of the pipeline 8. The contact status of the anode rod 6 and the pipeline 8 is still judged by the detection meter 10 to adjust the position of the anode rod 6, thereby improving the utilization rate of the anode rod 6, reducing the corrosion protection cost of the pipeline 8, and reducing the difficulty of device detection and maintenance.

[0051] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anode rod adjustment device for slowing down pipeline corrosion, characterized in that: The invention comprises a bracket (3), the bracket (3) is movably arranged on the pipe (8), an anode rod (6) is fixedly arranged at the end of the bracket (3), the anode rod (6) contacts the inner bottom surface of the pipe (8), a cable (5) is arranged inside the bracket (3), one end of the cable (5) is connected to the anode rod (6), and the other end of the cable (5) is connected to the detection meter (10), and the pipe (8) is connected to the detection meter (10) through a wire. The bracket (3) is movably provided with a conjoined base (2), and the conjoined base (2) is fixedly arranged on the outer wall of the pipe (8); The bracket (3) is provided with an insulating sleeve (4), and the insulating sleeve (4) is provided with an anti-reverse structure (9); The insulating sleeve (4) is located between the anode rod (6) and the external thread of the bracket (3).

2. The anode rod adjustment device for mitigating pipeline corrosion according to claim 1, characterized in that: The integrated base (2) is provided with an internal thread, and the bracket (3) is provided with an external thread engaged with the integrated base (2).

3. The anode rod adjustment device for mitigating pipeline corrosion according to claim 2, characterized in that: The bracket (3) is provided with a protective cover (1), and the protective cover (1) is sleeved on the integrated base (2).

4. The anode rod adjustment device for mitigating pipeline corrosion according to claim 3, characterized in that: The integrated base (2) is provided with an external thread, and the interior of the protective cover (1) is provided with an internal thread that engages with the integrated base (2).

5. The anode rod adjusting device for slowing down pipeline corrosion according to claim 4, characterized in that: The bracket (3) is provided with a handle (7), and the handle (7) is provided with a through hole for passing the cable (5).

6. The anode rod adjusting device for mitigating pipeline corrosion according to claim 5, characterized in that: The bracket (3) is a metal tube.

7. A method for operating the anode rod adjustment device for mitigating pipeline corrosion according to claim 1, characterized in that: The following steps are involved: S1. A through hole for inserting the bracket (3) is opened in advance on the pipe (8), and the bracket (3) and the anode rod (6) are inserted through the through hole on the pipe (8) so that the anode rod (6) contacts the inner bottom surface of the pipe (8); S2. The cable (5), the anode rod (6), the pipe (8) and the test meter (10) are sequentially connected in series to form a closed circuit, and the current on the test meter (10) is used to determine whether the anode rod (6) is in contact with the pipe (8); S3. If the anode rod (6) is not in contact with the pipe (8), the anode rod (6) is inserted downward through the bracket (3) until the anode rod (6) is in contact with the pipe (8).

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