Method, device, system and equipment for determining damage degree of anticorrosive coating of pipeline, medium and product

Abstract

The embodiment of the invention discloses a method, a device, a system, equipment, a medium and a product for determining the damage degree of a pipeline anti-corrosion layer, and the method comprises the steps: collecting the current values of three collection points of the pipeline anti-corrosion layer of a pipeline after a current transmitter transmits a current to the pipeline, including a damage point and a measurement point between the current transmitter and the damage point, measuring points between the two; according to the current values of the three points, determining the first conductivity of the pipeline anti-corrosion layer of the measured pipeline, calculating the average conductivity, and correcting the average conductivity according to the standard soil resistivity to obtain the corrected conductivity; and determining the damage degree of the first acquisition point according to the corrected conductivity. According to the technical scheme, the problem that the damage degree of the pipeline anticorrosive coating cannot be accurately determined at present is solved, the damage degree of the pipeline anticorrosive coating is determined by calculating the conductivity of the anticorrosive coating, the conductivity of the anticorrosive coating is related to multi-dimensional anticorrosive coating factors, and the efficiency and accuracy of determining the damage degree of the pipeline anticorrosive coating are improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of pipeline anti-corrosion layer detection, and in particular, to a method, device, system, equipment, medium and product for determining the damage degree of a pipeline anti-corrosion layer. Background Art

[0002] Currently, the determination of the damage degree of a pipeline anti-corrosion layer is usually based on qualitative indicators, and the evaluation criteria for the qualitative indicators of each detection service are inconsistent. It mostly relies on long-term external detection experience analysis and data accumulation, or uses quantitative indicators such as current attenuation rate, current attenuation factor, and alternating current potential gradient value to determine the damage degree of the anti-corrosion layer. Due to differences in experience, as well as differences in pipeline environment and corrosion protection systems, the formulated indicators vary greatly, which is not conducive to improving the accuracy of determining the damage degree of the pipeline anti-corrosion layer, resulting in very difficult analysis and management of later detection data. It is very difficult for inspectors to grasp the evaluation scale in actual applications, leading to a low accuracy rate in determining the damage degree of the pipeline anti-corrosion layer. Summary of the Invention

[0003] The embodiments of the present invention provide a method, device, system, equipment, medium and product for determining the damage degree of a pipeline anti-corrosion layer, which can determine the damage degree of the pipeline anti-corrosion layer by calculating the conductivity of the anti-corrosion layer. The conductivity of the anti-corrosion layer is related to multiple anti-corrosion layer factors, improving the efficiency and accuracy of determining the damage degree of the pipeline anti-corrosion layer.

[0004] In a first aspect, the embodiments of the present invention provide a method for determining the damage degree of a pipeline anti-corrosion layer, the method comprising:

[0005] After emitting current to the pipeline through a current transmitter, collect the current values at the first collection point, the second collection point, and the third collection point of the pipeline anti-corrosion layer of the pipeline, wherein the first collection point is the damaged point of the pipeline anti-corrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point;

[0006] Determine the first conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline between the third collection point and the first collection point according to the current values at the first collection point, the second collection point, and the third collection point;

[0007] Determine the average conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline according to the first conductivity;

[0008] Correct the average conductivity according to the standard soil resistivity to obtain a corrected conductivity;

[0009] Determine the damage degree of the first collection point according to the corrected conductivity and the preset mapping relationship between the corrected conductivity and the damage degree.

[0010] Second aspect, an embodiment of the present invention provides a device for determining the damage degree of a pipeline anti-corrosion layer. The device includes:

[0011] A current value determination module, configured to collect the current values at the first collection point, the second collection point, and the third collection point of the pipeline anti-corrosion layer of the pipeline after a current is transmitted to the pipeline through a current transmitter. Among them, the first collection point is the damage point of the pipeline anti-corrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point;

[0012] A first conductivity determination module, configured to determine the first conductivity of the pipeline anti-corrosion layer of the measurement section pipeline between the third collection point and the first collection point according to the current values at the first collection point, the second collection point, and the third collection point;

[0013] An average conductivity determination module, configured to determine the average conductivity of the pipeline anti-corrosion layer of the measurement section pipeline according to the first conductivity;

[0014] A corrected conductivity determination module, configured to correct the average conductivity according to the standard soil resistivity to obtain the corrected conductivity;

[0015] A damage degree determination module, configured to determine the damage degree of the first collection point according to the corrected conductivity and the mapping relationship between the corrected conductivity and the damage degree preset;

[0016] Third aspect, an embodiment of the present invention provides a system for determining the damage degree of a pipeline anti-corrosion layer. The system includes:

[0017] A test pile, a current transmitter, at least three receivers, and a pipeline anti-corrosion layer damage degree determination module;

[0018] Among them, the current transmitter is installed on the test pile and is configured to transmit a current to the pipeline;

[0019] At least three receivers are arranged at the first collection point, the second collection point, or the third collection point, and are configured to collect the current values at the first collection point, the second collection point, or the third collection point of the pipeline anti-corrosion layer of the pipeline when the current transmitter transmits a current to the pipeline;

[0020] The pipeline anti-corrosion layer damage degree determination module is configured to determine the damage degree of the first collection point of the pipeline anti-corrosion layer according to the pipeline anti-corrosion layer damage degree determination method in any embodiment of the present invention.

[0021] Fourth aspect, an embodiment of the present invention further provides a computer device. The computer device includes:

[0022] One or more processors;

[0023] A memory, configured to store one or more programs;

[0024] When one or more of the above programs are executed by one or more processors, the one or more processors implement the method for determining the degree of damage to the pipeline anti-corrosion layer provided in any embodiment of the present invention.

[0025] In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it implements the method for determining the degree of damage to the pipeline anti-corrosion layer provided in any embodiment of the present invention.

[0026] In a sixth aspect, an embodiment of the present invention further provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the method for determining the degree of damage to the pipeline anti-corrosion layer provided in any embodiment of the present invention.

[0027] The embodiments in the above invention have the following advantages or beneficial effects:

[0028] In the embodiment of the present invention, after a current is emitted to the pipeline through a current transmitter, the current values at the first collection point, the second collection point, and the third collection point of the pipeline anti-corrosion layer of the pipeline are collected. Among them, the first collection point is the damage point of the pipeline anti-corrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point; the first conductivity of the pipeline anti-corrosion layer of the measurement section pipeline between the third collection point and the first collection point is determined according to the current values at the first collection point, the second collection point, and the third collection point; the average conductivity of the pipeline anti-corrosion layer of the measurement section pipeline is determined according to the first conductivity; the average conductivity is corrected according to the standard soil resistivity to obtain a corrected conductivity; according to the corrected conductivity and the mapping relationship between the corrected conductivity and the degree of damage preset, the degree of damage at the first collection point is determined. The technical solution of the embodiment of the present invention solves the problem that the degree of damage to the pipeline anti-corrosion layer cannot be accurately determined at present. By calculating the conductivity of the anti-corrosion layer, the degree of damage to the pipeline anti-corrosion layer is determined. The conductivity of the anti-corrosion layer is related to multi-dimensional anti-corrosion layer factors, improving the efficiency and accuracy of determining the degree of damage to the pipeline anti-corrosion layer. Description of the Drawings

[0029] Figure 1 is a flowchart of a method for determining the degree of damage to a pipeline anti-corrosion layer provided by an embodiment of the present invention;

[0030] Figure 2 is a flowchart of a method for determining the degree of damage to a pipeline anti-corrosion layer provided by an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of determining the degree of damage to a pipeline anti-corrosion layer provided by an embodiment of the present invention;

[0032] Figure 4It is a schematic structural diagram of a device for determining the damage degree of a pipeline anti-corrosion layer provided by an embodiment of the present invention;

[0033] Figure 5 It is a schematic structural diagram of a system for determining the damage degree of a pipeline anti-corrosion layer provided by an embodiment of the present invention;

[0034] Figure 6 It is a schematic structural diagram of a computer device provided by an embodiment of the present invention. Specific implementation manners

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention rather than all structures are shown in the drawings.

[0036] Figure 1 It is a flowchart of a method for determining the damage degree of a pipeline anti-corrosion layer provided by an embodiment of the present invention. This embodiment is applicable to the scenario of determining the damage degree of a pipeline anti-corrosion layer. This method can be executed by a device for determining the damage degree of a pipeline anti-corrosion layer, and this device can be implemented in a software and / or hardware manner and integrated in a computer device with application development functions.

[0037] As Figure 1 shown, the method for determining the damage degree of a pipeline anti-corrosion layer in this embodiment includes the following steps:

[0038] S110. After transmitting current to the pipeline through a current transmitter, collect the current values at the first collection point, the second collection point, and the third collection point of the pipeline anti-corrosion layer of the pipeline.

[0039] Among them, the first collection point is the damage point of the pipeline anti-corrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point.

[0040] In this embodiment, the pipeline can be a buried pipeline, and can include water supply and drainage pipelines, gas pipelines, oil pipelines, heating pipelines, and chemical pipelines. Since the above pipelines are in contact with the soil, pipeline anti-corrosion layers are provided on their surfaces to resist soil corrosion.

[0041] A current transmitter is a device that can generate and transmit current, and can convert other energies into stable direct current or alternating current through an internal power supply device. The current transmitter can be installed on the test pile of the pipeline. Through a specific circuit design, the current is modulated and amplified, and then the current is transmitted to the pipeline through a transmitting antenna or a transmission line.

[0042] A pipeline test pile is a device used for pipeline anti-corrosion detection and monitoring, installed along the pipeline. An electric current transmitter is erected on the pipeline test pile, and measurements are taken along the pipeline with a receiver at preset interval distances, such as 5 - 10 m. Specifically, grounding electrodes are set at both ends and along the pipeline. The output terminal of the electric current transmitter is connected to the pipeline, and the other end is connected to the grounding electrode to form an electric current loop. At the same time, the two measuring electrodes of the receiver are respectively placed in the soil on both sides of the pipeline to measure the electric current density. A curve of the electric current density varying with position is plotted. When normal, the curve is stable. If obvious peaks or mutations occur, there may be a pipeline break point. Measurements can be densified in the abnormal area to narrow down the range, or by the difference method, calculate the difference in electric current density between adjacent measurement points, and determine the break point of the pipeline anti-corrosion layer based on the difference.

[0043] Take the break point of the pipeline anti-corrosion layer as the first collection point, determine a point between the electric current transmitter and the first collection point as the second collection point, and determine a point between the second collection point and the first collection point as the third collection point.

[0044] S120: Determine the first conductivity of the pipeline anti-corrosion layer of the pipeline section between the third collection point and the first collection point according to the electric current values at the first collection point, the second collection point, and the third collection point.

[0045] According to the electric current values at the three collection points, the electric current change value can be determined, that is, the electric current change value from the third collection point to the first collection point, and the electric current change value between the second collection point and the third collection point. Determine the attenuation coefficient based on these two electric current change values. According to the attenuation coefficient and the longitudinal resistance of the pipeline section, the first conductivity of the pipeline anti-corrosion layer of the pipeline section between the third collection point and the first collection point can be calculated.

[0046] S130: Determine the average conductivity of the pipeline anti-corrosion layer of the pipeline section according to the first conductivity.

[0047] Determine the average conductivity of the pipeline anti-corrosion layer of the pipeline section according to the first conductivity and the surface area of the pipeline section.

[0048] S140: Correct the average conductivity according to the standard soil resistivity to obtain the corrected conductivity.

[0049] The standard soil resistivity can be based on a preset reference value of soil resistivity. Correct the average conductivity through the standard soil resistivity, using these values of the average conductivity, the average soil resistivity of the pipeline section, and the standard soil resistivity. Then divide the average soil resistivity of the pipeline section by the standard soil resistivity to obtain the correction coefficient. Finally, multiply the average conductivity by the correction coefficient to obtain the corrected average conductivity. Through the corrected conductivity, the conductivity data under different soil conditions can be made more comparable, improving the accuracy of determining the degree of damage based on conductivity in the follow-up.

[0050] S150. Determine the damage degree of the first acquisition point according to the calibrated conductivity and the mapping relationship between the preset calibrated conductivity and the damage degree.

[0051] The preset mapping relationship between the calibrated conductivity and the damage degree may include the mapping relationship between the calibrated conductivity value range and the damage degree level. First, determine the value range of the calibrated conductivity, and then determine the damage degree level according to the value range. The damage degree level can be set according to actual needs, for example, it includes four levels.

[0052] Different preset mapping relationships between the calibrated conductivity and the damage degree can be set according to different standard soil resistivities. For example, when the standard soil resistivity is 1000 Ω-cm, the preset mapping relationship between the calibrated conductivity and the damage degree can be: when the calibrated conductivity < 100 μS / m, the damage degree level is very low, and the anti-corrosion layer quality is excellent; when the calibrated conductivity is in the range of 101 - 500 μS / m, the damage degree level is low, and the anti-corrosion layer quality is good; when the calibrated conductivity is in the range of 501 - 2000 μS / m, the damage degree level is medium, and the anti-corrosion layer quality is average; when the calibrated conductivity > 2000 μS / m, the damage degree level is high, and the anti-corrosion layer quality is poor.

[0053] In this embodiment, the conductivity of the anti-corrosion layer is accurately calculated through multi-point current values. Since the conductivity of the anti-corrosion layer is related to multi-dimensional anti-corrosion layer quality factors such as the degree of pipeline polarization and anti-corrosion layer factors such as anti-corrosion layer type, service life, thickness, and the quality during pipeline installation, etc., the damage degree of the anti-corrosion layer can be accurately determined through the conductivity of the anti-corrosion layer, which is convenient for subsequent analysis and management of anti-corrosion layer detection data.

[0054] The technical solution of this embodiment is as follows: After emitting current to the pipeline through a current transmitter, collect the current values at the first acquisition point, the second acquisition point, and the third acquisition point of the pipeline anti-corrosion layer of the pipeline, where the first acquisition point is the damaged point of the pipeline anti-corrosion layer, the second acquisition point is between the current transmitter and the first acquisition point, and the third acquisition point is between the second acquisition point and the first acquisition point; determine the first conductivity of the pipeline anti-corrosion layer of the pipeline section between the third acquisition point and the first acquisition point according to the current values at the first acquisition point, the second acquisition point, and the third acquisition point; determine the average conductivity of the pipeline anti-corrosion layer of the pipeline section according to the first conductivity; calibrate the average conductivity according to the standard soil resistivity to obtain the calibrated conductivity; determine the damage degree of the first acquisition point according to the calibrated conductivity and the preset mapping relationship between the calibrated conductivity and the damage degree. The technical solution of the embodiment of the present invention solves the problem that the damage degree of the pipeline anti-corrosion layer cannot be accurately determined at present. By calculating the conductivity of the anti-corrosion layer to determine the damage degree of the pipeline anti-corrosion layer, the conductivity of the anti-corrosion layer is related to multi-dimensional anti-corrosion layer factors, which improves the efficiency and accuracy of determining the damage degree of the pipeline anti-corrosion layer.

[0055] Figure 2 The figure is a flowchart of a method for determining the damage degree of a pipeline anti-corrosion layer provided by an embodiment of the present invention. This embodiment and the method for determining the damage degree of the pipeline anti-corrosion layer in the above embodiment belong to the same inventive concept, and further describe the process of determining the first conductivity, average conductivity, and corrected conductivity. This method can be executed by a device for determining the damage degree of a pipeline anti-corrosion layer, and this device can be implemented in a software and / or hardware manner and integrated into a computer device with application development functions.

[0056] As Figure 2 shown, the method for determining the damage degree of the pipeline anti-corrosion layer in this embodiment includes the following steps:

[0057] S210. After transmitting current to the pipeline through a current transmitter, collect the current values at the first collection point, second collection point, and third collection point of the pipeline anti-corrosion layer of the pipeline.

[0058] As Figure 3 shown, install a current transmitter on the pipeline test pile, and use a receiver to measure at a certain interval distance along the pipeline, such as 5 - 10 m. When detecting a damage point of the anti-corrosion layer, point b is the damage point, point a is the measurement point between the damage point and the reference point and closer to the current transmitter, point o is the reference point closer to the transmitter than measurement points a and b. The first collection point is b, the second collection point is o, and the third collection point is a.

[0059] Measure and record the current values of points o, a, and b with lengths of the first distance a and the second distance L on the pipeline through a receiver, which are the reference point current I o and the pipeline current I a and I b .

[0060] S220. Calculate the first current change amount between the second collection point and the third collection point according to the current values of the second collection point and the third collection point, and calculate the second current change amount between the third collection point and the first collection point according to the current values of the third collection point and the first collection point.

[0061] Calculate the first current change amount ΔI a between the second collection point and the third collection point through the formula ΔI a = I o - I a , and calculate the second current change amount ΔI b between the third collection point and the first collection point through the formula ΔI b = I o - I b .

[0062] S230. Calculate the attenuation coefficient according to the first current change amount and the second current change amount.

[0063] Use the formula αL = ln[ΔI a / ΔI b to calculate the attenuation coefficient α. Therefore, the attenuation coefficient α of the pipeline section with length L is α = ln[ΔI a / ΔI b / L, where L is the distance between two measurement points a and b, with the unit of m.

[0064] S240. Calculate the first conductivity of the pipeline anticorrosion layer of the pipeline section according to the attenuation coefficient and the longitudinal resistance of the pipeline section between the third collection point and the first collection point.

[0065] The first conductivity of the pipeline anticorrosion layer of the pipeline section can be determined according to the first conductivity calculation formula and the longitudinal resistance of the pipeline section.

[0066] In an optional implementation manner, calculating the first conductivity of the pipeline anticorrosion layer of the pipeline section according to the attenuation coefficient and the longitudinal resistance of the pipeline section between the third collection point and the first collection point includes:

[0067] Obtain the first conductivity of the pipeline anticorrosion layer of the pipeline section by dividing the square of the attenuation coefficient by the longitudinal resistance of the pipeline section between the third collection point and the first collection point.

[0068] Use the formula g = α 2 / r to calculate the first conductivity g of the pipeline anticorrosion layer of the pipeline section, with the unit of S, where r is the longitudinal resistance of the pipeline section with length L, and α is the attenuation coefficient of the pipeline section.

[0069] S250. Obtain the average conductivity of the pipeline anticorrosion layer of the pipeline section by dividing the first conductivity by the surface area of the pipeline section.

[0070] Use the formula G = g / A to calculate the average conductivity of the pipeline anticorrosion layer of the pipeline section: where: g is the first conductivity g of the pipeline anticorrosion layer of the pipeline section; G is the average conductivity of the pipeline anticorrosion layer of the pipeline section, with the unit of S / m 2 ; A is the surface area of the pipeline section, with the unit of m 2 .

[0071] S260. Obtain the correction coefficient by dividing the average soil resistivity of the pipeline section by the standard soil resistivity, and obtain the corrected conductivity by multiplying the average conductivity by the correction coefficient.

[0072] The calculated average conductivity is partially affected by the soil resistivity. To accurately determine the degree of damage, the average conductivity is corrected by the standard soil resistivity. For example, in the case where the standard soil resistivity is 1000 Ω-cm, use the formula Gn = G * ρ avg Calculate the corrected conductivity G by dividing by 1000 n 。G is the average conductivity of the pipeline anticorrosion layer of the measured pipeline section, S / m 2 ; ρ avg is the average soil resistivity of the measured pipeline section L, with the unit of Ω-cm.

[0073] S270. Determine the degree of damage at the first acquisition point according to the corrected conductivity and the preset mapping relationship between the corrected conductivity and the degree of damage.

[0074] In the technical solution of this embodiment, after transmitting current to the pipeline through a current transmitter, the current values at the first acquisition point, the second acquisition point, and the third acquisition point of the pipeline anticorrosion layer of the pipeline are collected. Among them, the first acquisition point is the damaged point of the pipeline anticorrosion layer, the second acquisition point is between the current transmitter and the first acquisition point, and the third acquisition point is between the second acquisition point and the first acquisition point; calculate the first current change amount between the second acquisition point and the third acquisition point according to the current values of the second acquisition point and the third acquisition point, and calculate the second current change amount between the third acquisition point and the first acquisition point according to the current values of the third acquisition point and the first acquisition point; calculate the attenuation coefficient according to the first current change amount and the second current change amount; calculate the first conductivity of the pipeline anticorrosion layer of the measured pipeline section according to the attenuation coefficient and the longitudinal resistance of the measured pipeline section between the third acquisition point and the first acquisition point; obtain the average conductivity of the pipeline anticorrosion layer of the measured pipeline section by dividing the first conductivity by the surface area of the measured pipeline section; obtain the correction coefficient by dividing the average soil resistivity of the measured pipeline section by the standard soil resistivity, and obtain the corrected conductivity by multiplying the average conductivity by the correction coefficient; determine the degree of damage at the first acquisition point according to the corrected conductivity and the preset mapping relationship between the corrected conductivity and the degree of damage. The technical solution of the embodiment of the present invention solves the problem that the degree of damage of the pipeline anticorrosion layer cannot be accurately determined at present. By calculating the conductivity of the anticorrosion layer, the degree of damage of the pipeline anticorrosion layer is determined. The conductivity of the anticorrosion layer is related to multiple anticorrosion layer factors, improving the efficiency and accuracy of determining the degree of damage of the pipeline anticorrosion layer, and calculating the average conductivity through quantitative analysis, and correcting the average conductivity through the standard soil resistivity, further improving the reliability of determining the degree of damage.

[0075] Figure 4 This is a schematic structural diagram of a device for determining the degree of damage of a pipeline anticorrosion layer provided by an embodiment of the present invention. This embodiment is applicable to the scenario of determining the degree of damage of a pipeline anticorrosion layer. The device for determining the degree of damage of a pipeline anticorrosion layer can be implemented in a software and / or hardware manner and integrated in a computer terminal device with application development functions.

[0076] Such as Figure 4As shown in the figure, the device for determining the damage degree of the pipeline anti-corrosion layer includes: a current value determination module 310, a configuration interface display module 320, an average conductivity determination module 330, a corrected conductivity determination module 340, and a damage degree determination module 350.

[0077] Among them, the current value determination module 310 is configured to collect the current values at the first collection point, the second collection point, and the third collection point of the pipeline anti-corrosion layer of the pipeline after transmitting current to the pipeline through a current transmitter, where the first collection point is the damage point of the pipeline anti-corrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point; the first conductivity determination module 320 is configured to determine the first conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline between the third collection point and the first collection point according to the current values at the first collection point, the second collection point, and the third collection point; the average conductivity determination module 330 is configured to determine the average conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline according to the first conductivity; the corrected conductivity determination module 340 is configured to correct the average conductivity according to the standard soil resistivity to obtain the corrected conductivity; the damage degree determination module 350 is configured to determine the damage degree of the first collection point according to the corrected conductivity and the preset mapping relationship between the corrected conductivity and the damage degree.

[0078] The technical solution of this embodiment, after transmitting current to the pipeline through a current transmitter, collects the current values at the first collection point, the second collection point, and the third collection point of the pipeline anti-corrosion layer of the pipeline, where the first collection point is the damage point of the pipeline anti-corrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point; determines the first conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline between the third collection point and the first collection point according to the current values at the first collection point, the second collection point, and the third collection point; determines the average conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline according to the first conductivity; corrects the average conductivity according to the standard soil resistivity to obtain the corrected conductivity; determines the damage degree of the first collection point according to the corrected conductivity and the preset mapping relationship between the corrected conductivity and the damage degree. The technical solution of the embodiment of the present invention solves the problem that the damage degree of the pipeline anti-corrosion layer cannot be accurately determined at present, determines the damage degree of the pipeline anti-corrosion layer by calculating the conductivity of the anti-corrosion layer, and the conductivity of the anti-corrosion layer is related to multiple anti-corrosion layer factors, improving the efficiency and accuracy of determining the damage degree of the pipeline anti-corrosion layer.

[0079] In an alternative embodiment, the first conductivity determination module 320 is specifically configured to:

[0080] Calculate the first current change amount between the second acquisition point and the third acquisition point according to the current values of the second acquisition point and the third acquisition point, and calculate the second current change amount between the third acquisition point and the first acquisition point according to the current values of the third acquisition point and the first acquisition point; calculate the attenuation coefficient according to the first current change amount and the second current change amount; calculate the first conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline according to the attenuation coefficient and the longitudinal resistance of the measured section of the pipeline between the third acquisition point and the first acquisition point.

[0081] In an alternative embodiment, the first conductivity determination module 320 is further configured to:

[0082] Obtain the first conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline by dividing the square of the attenuation coefficient by the longitudinal resistance of the measured section of the pipeline between the third acquisition point and the first acquisition point.

[0083] In an alternative embodiment, the average conductivity determination module 330 is specifically configured to:

[0084] Obtain the average conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline by dividing the first conductivity by the surface area of the measured section of the pipeline.

[0085] In an alternative embodiment, the corrected conductivity determination module 340 is specifically configured to:

[0086] Obtain the correction coefficient by dividing the average soil resistivity of the measured section of the pipeline by the standard soil resistivity, and obtain the corrected conductivity by multiplying the average conductivity by the correction coefficient.

[0087] The pipeline anti-corrosion layer damage degree determination device provided by the embodiments of the present invention can execute the pipeline anti-corrosion layer damage degree determination method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the method.

[0088] Figure 5 It is a schematic structural diagram of a pipeline anti-corrosion layer damage degree determination system provided by an embodiment of the present invention. As Figure 5 shown, the pipeline anti-corrosion layer damage degree determination system includes:

[0089] Test piles 410, a current transmitter 420, at least three receivers 430, and a pipeline anti-corrosion layer damage degree determination module 440.

[0090] Among them, a current transmitter 420 is installed on a test pile 410 for transmitting current to the pipeline; at least three receivers 430 are arranged at a first collection point, a second collection point or a third collection point, and are used for collecting current values at the first collection point, the second collection point or the third collection point of the pipeline anti-corrosion layer of the pipeline when the current transmitter 420 transmits current to the pipeline; a pipeline anti-corrosion layer damage degree determination module 440 is used for determining the damage degree of the first collection point of the pipeline anti-corrosion layer according to the pipeline anti-corrosion layer damage degree determination method in any embodiment of the present invention.

[0091] The pipeline anti-corrosion layer damage degree determination module 440 is specifically used for:

[0092] After transmitting current to the pipeline through the current transmitter, according to the current values collected by at least three receivers 430 at the first collection point, the second collection point and the third collection point of the pipeline anti-corrosion layer of the pipeline, wherein the first collection point is the damage point of the pipeline anti-corrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point; determining the first conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline between the third collection point and the first collection point according to the current values at the first collection point, the second collection point and the third collection point; determining the average conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline according to the first conductivity; correcting the average conductivity according to the standard soil resistivity to obtain a corrected conductivity; and determining the damage degree of the first collection point according to the corrected conductivity and the mapping relationship between the corrected conductivity and the damage degree preset.

[0093] In an optional implementation manner, the pipeline anti-corrosion layer damage degree determination module 440 is further used for:

[0094] Calculating a first current change amount between the second collection point and the third collection point according to the current values of the second collection point and the third collection point, and calculating a second current change amount between the third collection point and the first collection point according to the current values of the third collection point and the first collection point; calculating an attenuation coefficient according to the first current change amount and the second current change amount; and calculating the first conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline according to the attenuation coefficient and the longitudinal resistance of the measured section of the pipeline between the third collection point and the first collection point.

[0095] In an optional implementation manner, the pipeline anti-corrosion layer damage degree determination module 440 is further used for:

[0096] Obtaining the first conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline by dividing the square of the attenuation coefficient by the longitudinal resistance of the measured section of the pipeline between the third collection point and the first collection point.

[0097] In an optional implementation manner, the pipeline anti-corrosion layer damage degree determination module 440 is further used for:

[0098] The average conductivity of the pipeline anti-corrosion layer of the measured pipeline segment is obtained by dividing the first conductivity by the surface area of the measured pipeline segment.

[0099] In an alternative embodiment, the pipeline anti-corrosion layer damage degree determination module 440 is further configured to:

[0100] Obtain a correction coefficient by dividing the average soil resistivity of the measured pipeline segment by the standard soil resistivity, and obtain a corrected conductivity by multiplying the average conductivity by the correction coefficient.

[0101] The technical solution of this embodiment is as follows: The current transmitter is installed on the test pile and is used to transmit current to the pipeline; at least three receivers are arranged at the first acquisition point, the second acquisition point or the third acquisition point, and are used to collect the current values at the first acquisition point, the second acquisition point or the third acquisition point of the pipeline anti-corrosion layer of the pipeline when the current transmitter transmits current to the pipeline; the pipeline anti-corrosion layer damage degree determination module is used to determine the damage degree of the first acquisition point of the pipeline anti-corrosion layer according to the pipeline anti-corrosion layer damage degree determination method in any one of the embodiments of the present invention. The technical solution of the embodiment of the present invention solves the problem that the damage degree of the pipeline anti-corrosion layer cannot be accurately determined at present. By calculating the conductivity of the anti-corrosion layer, the damage degree of the pipeline anti-corrosion layer is determined. The conductivity of the anti-corrosion layer is related to multi-dimensional anti-corrosion layer factors, which improves the efficiency and accuracy of determining the damage degree of the pipeline anti-corrosion layer.

[0102] Figure 6 It is a schematic structural diagram of a computer device provided by an embodiment of the present invention. Figure 6 It shows a block diagram of an exemplary computer device 12 suitable for implementing the embodiments of the present invention. Figure 6 The shown computer device 12 is only an example and should not impose any limitation on the functions and usage scope of the embodiments of the present invention. The computer device 12 can be any terminal device with computing power, such as intelligent controllers, servers, mobile phones and other terminal devices.

[0103] As Figure 6 shown, the computer device 12 is presented in the form of a general-purpose computing device. The components of the computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 connecting different system components (including the system memory 28 and the processing unit 16).

[0104] Bus 18 represents one or more of several types of bus architectures, including a memory bus or memory controller, a peripheral bus, an Accelerated Graphics Port, a processor bus, or a local bus using any of a variety of bus architectures. By way of example, and not limitation, these architectures include Industry Standard Architecture (ISA) buses, Micro Channel Architecture (MAC) buses, Enhanced ISA buses, Video Electronics Standards Association (VESA) local buses, and Peripheral Component Interconnect (PCI) buses.

[0105] Computer device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by computer device 12, including both volatile and nonvolatile media, removable and non-removable media.

[0106] System memory 28 can include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache 32. Computer device 12 can further include other removable / non-removable, volatile / nonvolatile computer system storage media. By way of example only, storage system 34 can be used for reading from and writing to non-removable, nonvolatile magnetic media ( Figure 6 not shown and typically called a “hard disk drive”). Although Figure 6 not shown in the figures, a disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a “floppy disk”), and an optical disk drive for reading from and writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, a DVD-ROM, or other optical media) can be provided. In these instances, each drive can be connected to bus 18 by one or more data media interfaces. System memory 28 can include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the present invention.

[0107] A program / utility 40 having a set (at least one) of program modules 42 can be stored, for example, in system memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may include an implementation of a network environment. The program modules 42 typically carry out the functions and / or methods of the embodiments described herein.

[0108] The computer device 12 can also communicate with one or more external devices 14 (such as a keyboard, a pointing device, a display 24, etc.), and can also communicate with one or more devices that enable a user to interact with the computer device 12, and / or communicate with any device that enables the computer device 12 to communicate with one or more other computing devices (such as a network card, a modem, etc.). Such communication can be carried out through the input / output (I / O) interface 22. Moreover, the computer device 12 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through the network adapter 20. As shown in the figure, the network adapter 20 communicates with other modules of the computer device 12 through the bus 18. It should be understood that although Figure 6 not shown in the figure, other hardware and / or software modules can be used in combination with the computer device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0109] The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, for example, implementing the method for determining the damage degree of the pipeline anti-corrosion layer provided by the embodiments of the present invention. The method includes:

[0110] After a current is emitted to the pipeline by a current transmitter, current values at a first collection point, a second collection point, and a third collection point of the pipeline anti-corrosion layer of the pipeline are collected, where the first collection point is the damage point of the pipeline anti-corrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point;

[0111] Determine the first conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline between the third collection point and the first collection point according to the current values at the first collection point, the second collection point, and the third collection point;

[0112] Determine the average conductivity of the pipeline anti-corrosion layer of the measured section of the pipeline according to the first conductivity;

[0113] Correct the average conductivity according to the standard soil resistivity to obtain a corrected conductivity;

[0114] Determine the damage degree of the first collection point according to the corrected conductivity and the mapping relationship between the corrected conductivity and the damage degree preset.

[0115] The embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the method for determining the damage degree of the pipeline anti-corrosion layer provided by any embodiment of the present invention is implemented. The method includes:

[0116] After a current is transmitted through a pipeline by a current transmitter, current values at a first collection point, a second collection point, and a third collection point of the pipeline anti-corrosion layer of the pipeline are collected. Among them, the first collection point is the damaged point of the pipeline anti-corrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point;

[0117] Determine the first conductivity of the pipeline anti-corrosion layer of the pipeline section between the third collection point and the first collection point according to the current values at the first collection point, the second collection point, and the third collection point;

[0118] Determine the average conductivity of the pipeline anti-corrosion layer of the pipeline section according to the first conductivity;

[0119] Correct the average conductivity according to the standard soil resistivity to obtain a corrected conductivity;

[0120] Determine the degree of damage of the first collection point according to the corrected conductivity and the preset mapping relationship between the corrected conductivity and the degree of damage.

[0121] The computer storage medium of the embodiments of the present invention can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the computer-readable storage medium include: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device.

[0122] The computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, in which the computer-readable program code is carried. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device.

[0123] The program code contained on a computer-readable medium can be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical fiber cable, RF, etc., or any suitable combination of the above.

[0124] The computer program code for performing the operations of the present invention can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, Python, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0125] Embodiments of the present invention also provide a computer program product, including a computer program that, when executed by a processor, implements the method for determining the degree of damage to the pipeline anti-corrosion layer provided in any embodiment of the present application.

[0126] In the process of implementing the computer program product, the computer program code for performing the operations of the present invention can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, Python, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network - including a local area network (LAN) or a wide area network (WAN) - or can be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0127] Those of ordinary skill in the art should understand that the above-mentioned modules or steps of the present invention can be implemented by a general-purpose computing device. They can be centralized on a single computing device or distributed on a network composed of multiple computing devices. Optionally, they can be implemented with program codes executable by a computer device, so that they can be stored in a storage device and executed by the computing device, or they can be separately fabricated into individual integrated circuit modules, or multiple modules or steps among them can be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0128] Note that the above is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for determining the degree of damage to a pipeline anti-corrosion layer, characterized in that, Including: After transmitting current to the pipeline through a current transmitter, collect the current values at the first collection point, the second collection point, and the third collection point of the pipeline anticorrosion layer of the pipeline, where the first collection point is the break point of the pipeline anticorrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point; Determine the first conductivity of the pipeline anticorrosion layer of the measured section of the pipeline between the third collection point and the first collection point according to the current values at the first collection point, the second collection point, and the third collection point; Determine the average conductivity of the pipeline anticorrosion layer of the measured section of the pipeline according to the first conductivity; Correct the average conductivity according to the standard soil resistivity to obtain a corrected conductivity; Determine the degree of breakage of the first collection point according to the corrected conductivity and the mapping relationship between the corrected conductivity and the degree of breakage preset; 2. The method according to claim 1, wherein The determining the first conductivity of the pipeline anticorrosion layer of the measured section of the pipeline between the third collection point and the first collection point according to the current values at the first collection point, the second collection point, and the third collection point includes: Calculate the first current change amount between the second collection point and the third collection point according to the current values of the second collection point and the third collection point, and calculate the second current change amount between the third collection point and the first collection point according to the current values of the third collection point and the first collection point; Calculate the attenuation coefficient according to the first current change amount and the second current change amount; Calculate the first conductivity of the pipeline anticorrosion layer of the measured section of the pipeline according to the attenuation coefficient and the longitudinal resistance of the measured section of the pipeline between the third collection point and the first collection point.

3. The method according to claim 2, wherein The calculating the first conductivity of the pipeline anticorrosion layer of the measured section of the pipeline according to the attenuation coefficient and the longitudinal resistance of the measured section of the pipeline between the third collection point and the first collection point includes: Obtain the first conductivity of the pipeline anticorrosion layer of the measured section of the pipeline by dividing the square of the attenuation coefficient by the longitudinal resistance of the measured section of the pipeline between the third collection point and the first collection point.

4. The method according to claim 1, wherein The determining the average conductivity of the pipeline anticorrosion layer of the measured section of the pipeline according to the first conductivity includes: Obtain the average conductivity of the pipeline anticorrosion layer of the measured section of the pipeline by dividing the first conductivity by the surface area of the measured section of the pipeline.

5. The method according to claim 1, wherein The correcting the average conductivity according to the standard soil resistivity to obtain a corrected conductivity includes: Obtain a correction coefficient by dividing the average soil resistivity of the measured section of the pipeline by the standard soil resistivity, and obtain a corrected conductivity by multiplying the average conductivity by the correction coefficient.

6. A device for determining the degree of damage to a pipeline anticorrosion layer, characterized in that, Including: A current value determination module, configured to collect the current values at the first collection point, the second collection point, and the third collection point of the pipeline anticorrosion layer of the pipeline after transmitting current to the pipeline through a current transmitter, where the first collection point is the break point of the pipeline anticorrosion layer, the second collection point is between the current transmitter and the first collection point, and the third collection point is between the second collection point and the first collection point; The first conductivity determination module is configured to determine the first conductivity of the pipeline anticorrosion layer of the pipeline section between the third collection point and the first collection point according to the current values at the first collection point, the second collection point, and the third collection point; The average conductivity determination module is configured to determine the average conductivity of the pipeline anticorrosion layer of the pipeline section according to the first conductivity; The corrected conductivity determination module is configured to correct the average conductivity according to the standard soil resistivity to obtain the corrected conductivity; The damage degree determination module is configured to determine the damage degree of the first collection point according to the corrected conductivity and the mapping relationship between the corrected conductivity and the damage degree preset; 7. A system for determining the degree of damage to a pipeline anti-corrosion layer, characterized in that including: a test pile, a current transmitter, at least three receivers, and a pipeline anticorrosion layer damage degree determination module; wherein, the current transmitter is installed on the test pile and is configured to transmit current to the pipeline; at least three of the receivers are arranged at the first collection point, the second collection point, or the third collection point, and are configured to collect the current values at the first collection point, the second collection point, or the third collection point of the pipeline anticorrosion layer of the pipeline when the current transmitter transmits current to the pipeline; The pipeline anticorrosion layer damage degree determination module is configured to determine the damage degree of the first collection point of the pipeline anticorrosion layer according to the pipeline anticorrosion layer damage degree determination method described in any one of claims 1-5; 8. A computer device, characterized in that, The computer device includes: one or more processors; a memory for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors implement the pipeline anticorrosion layer damage degree determination method described in any one of claims 1-5; 9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the pipeline anticorrosion layer damage degree determination method described in any one of claims 1-5; 10. A computer program product comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the pipeline anticorrosion layer damage degree determination method described in any one of claims 1-5.

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