A Method, Device, Equipment and Medium for Monitoring Cathodic Protection of Buried Pipelines

Abstract

The present invention relates to a method, device, equipment and medium for monitoring the cathodic protection of buried pipelines, belonging to the field of pipeline anti-corrosion. Among them, the method includes collecting cathodic protection data of buried pipelines; constructing a soil corrosivity evaluation model and outputting soil corrosivity results; outputting the effectiveness of cathodic protection of buried pipelines according to the cathodic protection parameters; sending a cathodic protection regulation signal of the buried pipeline by the Beidou satellite navigation system, and regulating the cathodic protection data of the buried pipeline through an automatic regulation system of the buried pipeline; uploading the cathodic protection information of the buried pipeline to a cloud server; presetting a depolarization period according to the cathodic protection information of the buried pipeline, conducting a depolarization test and outputting the polarization effectiveness of the buried pipeline. The present invention realizes the cathodic protection of pipelines in combination with the physical and chemical characteristics of the soil and according to the soil corrosivity, and at the same time combines the precise time and space empowerment of Beidou to make the cathodic protection of pipelines more accurate, timely, efficient and realize remote regulation.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipeline anti-corrosion, and particularly relates to a method, device, equipment and medium for monitoring the cathodic protection of buried pipelines. Background Art

[0002] Cathodic protection of buried pipelines is an important means to prevent the corrosion of buried pipelines. Traditional cathodic protection monitoring methods mainly rely on manual on-site testing, which has problems such as low monitoring frequency, untimely data collection, and low management efficiency. Existing intelligent systems for cathodic protection of underground pipelines mainly focus on monitoring the cathodic protection parameters of buried pipelines. However, soil physical and chemical properties such as resistivity and pH also have a significant impact on the cathodic protection effect of buried pipelines. Currently, few monitoring methods consider these factors. Moreover, different soil physical and chemical properties lead to different soil corrosivities. Monitoring the cathodic protection of buried pipelines under different soil corrosivities is time-consuming, laborious, costly, and prone to waste of resources. In addition, with the continuous improvement of the precise timing accuracy of China's Beidou satellite, there is an urgent need for an intelligent and highly precise positioning and timing remote monitoring and control system for cathodic protection of buried pipelines. Summary of the Invention

[0003] To solve the above problems existing in the prior art, the present invention provides a method, device, equipment and medium for monitoring the cathodic protection of buried pipelines.

[0004] The object of the present invention can be achieved by the following technical solutions:

[0005] A method for monitoring the cathodic protection of buried pipelines, the implementation of the method for monitoring the cathodic protection of buried pipelines includes the following steps:

[0006] S1: Set up monitoring points for buried pipelines and preset the monitoring period for buried pipelines. Collect cathodic protection data of buried pipelines at the monitoring points for buried pipelines according to the monitoring period for buried pipelines. The cathodic protection data of buried pipelines includes Beidou space-time cathodic protection data, soil corrosion parameters, and cathodic protection parameters. The soil corrosion parameters include soil resistivity, natural corrosion potential of the pipeline, redox potential, soil acidity, soil texture, soil water content, soil salt content, and soil chlorine content. The cathodic protection parameters include the total length of the buried pipeline, the length of the buried pipeline without effective protection, the weight loss of the inspection coupon without applied cathodic protection potential, the weight loss of the inspection coupon with applied cathodic protection potential, the exposed area of the inspection coupon without applied cathodic protection potential, the exposed area of the inspection coupon with applied cathodic protection potential, and the effective operation time of the cathodic protection measure. The Beidou space-time cathodic protection data is obtained through the Beidou satellite navigation system, and the soil corrosion parameters are collected through a soil intelligent detector. The soil intelligent detector includes a resistivity sensor, a potentiometer, a pH meter, a soil water content detector, a soil salt content analyzer, and a soil nutrient rapid detector;

[0007] S2: Construct a soil corrosivity evaluation model based on the soil corrosion parameters and output the soil corrosivity results, where the soil corrosivity results include strong soil corrosivity results, medium soil corrosivity results, weak soil corrosivity results, and very weak soil corrosivity results;

[0008] S3: When the soil corrosivity evaluation model outputs the strong soil corrosivity results and the medium soil corrosivity results, obtain the cathodic protection parameters within a radius of 500 meters centered on the buried pipeline monitoring point based on the Beidou spatio-temporal cathodic protection data, and output the cathodic protection effectiveness of the buried pipeline according to the cathodic protection parameters. The cathodic protection effectiveness of the buried pipeline includes sacrificial anode protection effectiveness and impressed current protection effectiveness. The sacrificial anode protection effectiveness is the cathodic protection effectiveness of the buried pipeline applying the sacrificial anode method, and the impressed current protection effectiveness is the cathodic protection effectiveness of the buried pipeline applying the impressed current method;

[0009] S4: Preset a cathodic protection effectiveness threshold for the buried pipeline. When the cathodic protection effectiveness of the buried pipeline is less than the cathodic protection effectiveness threshold of the buried pipeline, the Beidou satellite navigation system sends a cathodic protection regulation signal for the buried pipeline, and the cathodic protection parameters and the soil corrosion parameters are regulated through the automatic regulation system of the buried pipeline until the cathodic protection effectiveness of the buried pipeline is greater than or equal to the cathodic protection effectiveness threshold of the buried pipeline;

[0010] S5: Upload the cathodic protection information of the buried pipeline to the cloud server. The cathodic protection information of the buried pipeline includes the historical cathodic protection data set of the buried pipeline, the soil corrosivity results, the cathodic protection effectiveness of the buried pipeline, and the cathodic protection regulation signal of the buried pipeline;

[0011] S6: Preset a depolarization period according to the cathodic protection information of the buried pipeline. The cloud server conducts a depolarization test on the buried pipeline according to the depolarization period and outputs the polarization effectiveness of the buried pipeline. The polarization effectiveness of the buried pipeline includes high polarization effectiveness of the buried pipeline and low polarization effectiveness of the buried pipeline.

[0012] Preferably, step S2 specifically includes:

[0013] S201: Obtain the soil corrosion parameter evaluation scores according to the soil corrosion parameters. The soil corrosion parameter evaluation scores include soil resistivity evaluation scores, pipeline natural corrosion potential evaluation scores, redox potential evaluation scores, soil pH evaluation scores, soil texture evaluation scores, soil water content evaluation scores, soil salt content evaluation scores, and soil chlorine content evaluation scores;

[0014] S202: Calculate the soil corrosivity evaluation score according to the soil corrosion parameter evaluation score and construct the soil corrosivity evaluation model. The calculation formula for the soil corrosivity evaluation score is:

[0015] N = N 1 + N 2 + N 3 + N 4 + N 5 + N 6 + N 7 + N 8 ,

[0016] where N is the soil corrosivity evaluation score, N 1 is the soil resistivity evaluation score, N 2 is the pipeline natural corrosion potential evaluation score, N 3 is the redox potential evaluation score, N 4 is the soil pH evaluation score, N 5 is the soil texture evaluation score, N 6 is the soil water content evaluation score, N 7 is the soil salt content evaluation score, N 8 is the soil chlorine content evaluation score;

[0017] S203: Obtain the soil corrosivity evaluation threshold, which includes the strong soil corrosivity threshold, the medium soil corrosivity threshold, and the weak soil corrosivity threshold. Obtain the soil corrosivity result by comparing the soil corrosivity evaluation score and the soil corrosivity evaluation threshold;

[0018] Judge the soil corrosivity evaluation score. When the soil corrosivity evaluation score is greater than or equal to the strong soil corrosivity threshold, output the strong soil corrosivity result;

[0019] When the soil corrosivity evaluation score is greater than or equal to the medium soil corrosivity threshold and less than the strong soil corrosivity threshold, output the medium soil corrosivity result;

[0020] When the soil corrosivity evaluation score is greater than or equal to the weak soil corrosivity threshold and less than the medium soil corrosivity threshold, output the weak soil corrosivity result;

[0021] When the soil corrosivity evaluation score is less than the weak soil corrosivity threshold, output the very weak soil corrosivity result.

[0022] Preferably, the step S201 specifically includes:

[0023] S201-1: The expression for the soil resistivity evaluation score is:

[0024]

[0025] Among them, N 1 is the evaluation score of soil resistivity, ρ is the soil resistivity, and the unit is ohm·meter;

[0026] S201-2: The expression for the evaluation score of the natural corrosion potential of the pipeline is:

[0027]

[0028] Among them, N 2 is the evaluation score of the natural corrosion potential of the pipeline, E is the natural corrosion potential of the pipeline, and the unit is millivolt;

[0029] S201-3: The expression for the evaluation score of the redox potential is:

[0030]

[0031] Among them, N 3 is the evaluation score of the redox potential, Eh is the redox potential, and the unit is millivolt;

[0032] S201-5: The expression for the evaluation score of the soil pH value is:

[0033]

[0034] Among them, N 4 is the evaluation score of the soil pH value, pH is the soil pH value;

[0035] S201-5: The expression for the evaluation score of the soil texture is:

[0036]

[0037] Among them, N 5 is the evaluation score of the soil texture;

[0038] S201-6: The expression for the evaluation score of the soil water content is:

[0039]

[0040] Among them, N 6 is the evaluation score of the soil water content, ω is the soil water content, and the unit is %;

[0041] S201-7: The expression for the evaluation score of the soil salt content is:

[0042]

[0043] Among them, N 7is the evaluation score of soil salt content, C s is the soil salt content, in %;

[0044] S201-8: The expression of the evaluation score of the soil chlorine content is:

[0045]

[0046] where, N 8 is the evaluation score of the soil chlorine content, C Cl is the soil chlorine content, in %.

[0047] Preferably, the step S3 specifically includes:

[0048] S301: Obtain the sacrificial anode protection parameters according to the cathodic protection parameters, obtain the effectiveness of the sacrificial anode protection parameters according to the sacrificial anode protection parameters and output the sacrificial anode protection effectiveness. The sacrificial anode protection parameters include the sacrificial anode protection potential, the sacrificial anode protection rate, and the sacrificial anode protection degree. The effectiveness of the sacrificial anode protection parameters includes the effectiveness of the sacrificial anode protection potential, the effectiveness of the sacrificial anode protection rate, and the effectiveness of the sacrificial anode protection degree;

[0049] S302: Obtain the impressed current protection parameters according to the cathodic protection parameters, obtain the effectiveness of the impressed current protection parameters according to the impressed current protection parameters and output the impressed current protection effectiveness. The impressed current protection parameters include the cathode energizing point potential, the impressed current protection potential, the impressed current operation rate, and the impressed current protection degree. The effectiveness of the impressed current protection parameters includes the effectiveness of the cathode energizing point potential, the effectiveness of the impressed current protection potential, the effectiveness of the impressed current operation rate, and the effectiveness of the impressed current protection degree.

[0050] Preferably, the step S301 specifically includes:

[0051] S301-1: Preset the sacrificial anode protection potential range according to the buried pipeline material, judge the sacrificial anode protection potential. When the sacrificial anode protection potential is within the sacrificial anode protection potential range, the effectiveness value of the sacrificial anode protection potential is 1. When the sacrificial anode protection potential is outside the sacrificial anode protection potential range, the effectiveness value of the sacrificial anode protection potential is 0;

[0052] S301-2: Calculate the sacrificial anode protection rate according to the cathodic protection parameters. The calculation formula is:

[0053]

[0054] where, β is the sacrificial anode protection rate, in %, L is the total length of the buried pipeline, in meters, L Wis the length of the buried pipeline not effectively protected, in meters;

[0055] When the sacrificial anode protection rate is 100%, the effectiveness value of the sacrificial anode protection rate is 1. When the sacrificial anode protection rate is less than 100%, the effectiveness value of the sacrificial anode protection rate is 0;

[0056] S301-3: Calculate the sacrificial anode protection degree according to the cathodic protection parameters. The calculation formula is:

[0057]

[0058] where η is the sacrificial anode protection degree, in %, G 1 is the weight loss of the cathodic protection potential inspection coupon without applying cathodic protection, in grams, G 2 is the weight loss of the cathodic protection potential inspection coupon with applying cathodic protection, in grams, S 1 is the exposed area of the cathodic protection potential inspection coupon without applying cathodic protection, in square centimeters, S 2 is the exposed area of the cathodic protection potential inspection coupon with applying cathodic protection, in square centimeters;

[0059] When the sacrificial anode protection degree is greater than or equal to 85%, the effectiveness value of the sacrificial anode protection degree is 1. When the sacrificial anode protection degree is less than 85%, the effectiveness value of the sacrificial anode protection degree is 0;

[0060] S301-4: Calculate the sacrificial anode protection effectiveness according to the effectiveness of the sacrificial anode protection parameters. The calculation formula is:

[0061]

[0062] where ε is the sacrificial anode protection effectiveness, in %, ε 1 is the effectiveness of the sacrificial anode protection potential, in %, ε 2 is the effectiveness of the sacrificial anode protection rate, in %, ε 3 is the effectiveness of the sacrificial anode protection degree, in %.

[0063] Preferably, the step S302 specifically includes:

[0064] S302-1: Obtain the maximum protection potential of the buried pipeline, and judge the potential of the cathodic power-on point. When the potential of the cathodic power-on point is less than the maximum protection potential of the buried pipeline, the effectiveness value of the potential of the cathodic power-on point is 1. When the potential of the cathodic power-on point is greater than or equal to the maximum protection potential of the buried pipeline, the effectiveness value of the potential of the cathodic power-on point is 0;

[0065] S302-2: Preset the range of impressed current protection potential according to the buried pipeline material, and judge the impressed current protection potential. When the impressed current protection potential is within the range of the impressed current protection potential, the effectiveness value of the impressed current protection potential is 1; when the impressed current protection potential is outside the range of the impressed current protection potential, the effectiveness value of the impressed current protection potential is 0.

[0066] S302-3: Calculate the impressed current operation rate according to the cathodic protection parameters. The calculation formula is:

[0067]

[0068] Where, is the impressed current operation rate, with the unit of %, t is the effective operation time of the cathodic protection measures within one year, with the unit of hours, and T is the total number of hours in a year, taking the value of 8760 hours;

[0069] When the impressed current operation rate is greater than or equal to 98%, the effectiveness value of the impressed current operation rate is 1; when the impressed current operation rate is less than 98%, the effectiveness value of the impressed current operation rate is 0.

[0070] S302-4: Calculate the impressed current protection degree according to the cathodic protection parameters. The calculation formula is:

[0071]

[0072] Where, κ is the impressed current protection degree, η is the sacrificial anode protection degree, with the unit of %, G 1 is the weight loss of the inspection coupon without applying cathodic protection potential, with the unit of grams, G 2 is the weight loss of the inspection coupon with applying cathodic protection potential, with the unit of grams, S 1 is the exposed area of the inspection coupon without applying cathodic protection potential, with the unit of square centimeters, S 2 is the exposed area of the inspection coupon with applying cathodic protection potential, with the unit of square centimeters;

[0073] When the impressed current protection degree is greater than or equal to 85%, the effectiveness value of the impressed current protection degree is 1; when the impressed current protection degree is less than 85%, the effectiveness value of the impressed current protection degree is 0.

[0074] S302-5: Calculate the impressed current protection effectiveness according to the effectiveness of the impressed current protection parameters. The calculation formula is:

[0075]

[0076] Where, φ is the impressed current protection effectiveness, with the unit of %, φ 1The effectiveness of the energized point potential of the cathode, in %, φ 2 The effectiveness of the impressed current protection potential, in %, φ 3 The effectiveness of the impressed current operation rate, in %, φ 4 The effectiveness of the impressed current protection degree, in %.

[0077] Preferably, the step S6 specifically includes:

[0078] S601: Obtain the energized potential of the buried pipeline through a voltmeter. The energized potential of the buried pipeline is the potential of the buried pipeline when the cathodic protection of the buried pipeline operates normally;

[0079] S602: Synchronously interrupt the current of the buried pipeline through a current synchronization interrupter, and obtain the off - energized potential of the buried pipeline through a voltmeter. The off - energized potential of the buried pipeline is the potential of the buried pipeline when the current of the buried pipeline is interrupted;

[0080] S603: Keep interrupting the current of the buried pipeline and record the depolarization potential of the buried pipeline. The depolarization potential of the buried pipeline is the potential of the buried pipeline when the current of the buried pipeline is at a stable depolarization level;

[0081] S604: Calculate the cathodic polarization attenuation value of the buried pipeline according to the off - energized potential of the buried pipeline and the depolarization potential of the buried pipeline. The calculation formula is:

[0082] △E = |E J - E off |,

[0083] where △E is the cathodic polarization attenuation value of the buried pipeline, in millivolts, E J is the depolarization potential of the buried pipeline, in millivolts, E off is the off - energized potential of the buried pipeline, in millivolts, and |·| is the absolute value;

[0084] S605: Preset the cathodic polarization attenuation threshold of the buried pipeline, and obtain the polarization effectiveness of the buried pipeline by comparing the cathodic polarization attenuation value of the buried pipeline with the cathodic polarization attenuation threshold of the buried pipeline;

[0085] Judge the cathodic polarization attenuation value of the buried pipeline. When the cathodic polarization attenuation value of the buried pipeline is greater than or equal to the cathodic polarization attenuation threshold of the buried pipeline, output the high polarization effectiveness of the buried pipeline;

[0086] When the cathodic polarization attenuation value of the buried pipeline is less than the cathodic polarization attenuation threshold of the buried pipeline, output the low polarization effectiveness of the buried pipeline.

[0087] An intelligent monitoring device for cathodic protection of buried pipelines empowered by Beidou precise time and space, which is used to execute the above-mentioned cathodic protection monitoring method for buried pipelines, is characterized by comprising a data acquisition module, a soil corrosivity evaluation module, a cathodic protection effectiveness evaluation module, a cathodic protection effectiveness regulation module, a data upload module, and a depolarization module;

[0088] The data acquisition module is used to set up monitoring points for buried pipelines and preset a monitoring period for buried pipelines, and collect cathodic protection data of buried pipelines at the monitoring points for buried pipelines according to the monitoring period for buried pipelines. The cathodic protection data of buried pipelines includes Beidou time and space cathodic protection data, soil corrosion parameters, and cathodic protection parameters;

[0089] The soil corrosivity evaluation module is used to construct a soil corrosivity evaluation model based on the soil corrosion parameters and output a soil corrosivity result. The soil corrosivity result includes a strong soil corrosivity result, a medium soil corrosivity result, a relatively weak soil corrosivity result, and a weak soil corrosivity result;

[0090] When the soil corrosivity evaluation model outputs the strong soil corrosivity result and the medium soil corrosivity result, the cathodic protection effectiveness evaluation module is used to obtain the cathodic protection parameters within a range with a radius of 500 meters centered on the monitoring point for buried pipelines based on the Beidou time and space cathodic protection data, and output the cathodic protection effectiveness of the buried pipeline according to the cathodic protection parameters. The cathodic protection effectiveness of the buried pipeline includes sacrificial anode protection effectiveness and impressed current protection effectiveness;

[0091] The cathodic protection effectiveness regulation module is used to preset a cathodic protection effectiveness threshold for the buried pipeline. When the cathodic protection effectiveness of the buried pipeline is less than the cathodic protection effectiveness threshold for the buried pipeline, a cathodic protection regulation signal for the buried pipeline is sent by the Beidou satellite navigation system, and the cathodic protection parameters and the soil corrosion parameters are regulated through an automatic regulation system for the buried pipeline until the cathodic protection effectiveness of the buried pipeline is greater than or equal to the cathodic protection effectiveness threshold for the buried pipeline;

[0092] The data upload module is used to upload the cathodic protection information of the buried pipeline to a cloud server. The cathodic protection information of the buried pipeline includes a historical cathodic protection data set of the buried pipeline, the soil corrosivity result, the cathodic protection effectiveness of the buried pipeline, and the cathodic protection regulation signal for the buried pipeline;

[0093] The depolarization module is used to preset a depolarization period according to the cathodic protection information of the buried pipeline. The cloud server conducts a depolarization test on the buried pipeline according to the depolarization period and outputs the polarization effectiveness of the buried pipeline. The polarization effectiveness of the buried pipeline includes high polarization effectiveness of the buried pipeline and low polarization effectiveness of the buried pipeline.

[0094] An electronic device includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the above-mentioned buried pipeline cathodic protection monitoring method is implemented.

[0095] A storage medium containing computer-executable instructions, which are used to execute the above-mentioned buried pipeline cathodic protection monitoring method when executed by a computer processor.

[0096] The beneficial effects of the present invention are as follows:

[0097] (1) Through the precise time and space empowerment of Beidou and the comprehensive consideration of soil physical and chemical properties such as soil resistivity and soil pH, cathodic protection of buried pipelines is carried out. According to soil corrosivity, it is judged whether to monitor the effectiveness of buried pipeline cathodic protection, and the cathodic protection of buried pipelines is regulated according to the effectiveness of buried pipeline cathodic protection, so as to achieve the purpose of improving monitoring efficiency and reducing monitoring costs. Moreover, the monitoring method of buried pipelines combined with soil physical and chemical properties is more comprehensive and objective;

[0098] (2) According to the precise time and space empowerment of Beidou satellites, the monitoring points of buried pipelines are quickly and accurately located, and remote cathodic protection monitoring and regulation of buried pipelines are carried out intelligently and with high precision;

[0099] (3) The soil corrosivity evaluation score is obtained through soil physical and chemical properties, the soil corrosivity is comprehensively evaluated, and it is decided whether to monitor the effectiveness of buried pipeline cathodic protection according to the strength of soil corrosivity, reducing the workload and improving work efficiency;

[0100] (4) The cathodic polarization attenuation value of the buried pipeline is calculated through the off-potential of the buried pipeline and the depolarization potential of the buried pipeline, and the depolarization test of the buried pipeline is carried out to evaluate the long-term effectiveness of the buried pipeline cathodic protection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0101] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0102] Figure 1 It is a flowchart of the steps of a buried pipeline cathodic protection monitoring method of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0103] In order to further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following will describe in detail the specific implementation manners, structures, features and their effects of the present invention with reference to the accompanying drawings and preferred embodiments.

[0104] The working principle and usage process of the present invention:

[0105] Please refer to Figure 1, a method for monitoring the cathodic protection of buried pipelines, comprising:

[0106] S1: Set up monitoring points for buried pipelines and preset the monitoring period of buried pipelines. Collect the cathodic protection data of buried pipelines at the monitoring points of buried pipelines according to the monitoring period of buried pipelines. The cathodic protection data of buried pipelines includes Beidou spatio-temporal cathodic protection data, soil corrosion parameters, and cathodic protection parameters. The soil corrosion parameters include soil resistivity, natural corrosion potential of the pipeline, redox potential, soil pH value, soil texture, soil water content, soil salt content, and soil chlorine content. The cathodic protection parameters include the total length of the buried pipeline, the length of the buried pipeline without effective protection, the weight loss of the inspection coupon without applied cathodic protection potential, the weight loss of the inspection coupon with applied cathodic protection potential, the exposed area of the inspection coupon without applied cathodic protection potential, the exposed area of the inspection coupon with applied cathodic protection potential, and the effective operation time of the cathodic protection measures. The Beidou spatio-temporal cathodic protection data is obtained through the Beidou satellite navigation system, and the soil corrosion parameters are collected through a soil intelligent detector. The soil intelligent detector includes a resistivity sensor, a potentiometer, a pH meter, a soil water content detector, a soil salt content analyzer, and a soil nutrient rapid detector;

[0107] S2: Construct a soil corrosivity evaluation model based on the soil corrosion parameters and output the soil corrosivity result. The soil corrosivity result includes strong soil corrosivity result, medium soil corrosivity result, weak soil corrosivity result, and very weak soil corrosivity result;

[0108] S3: When the soil corrosivity evaluation model outputs the strong soil corrosivity result and the medium soil corrosivity result, obtain the cathodic protection parameters within a radius of 500 meters centered on the monitoring point of the buried pipeline based on the Beidou spatio-temporal cathodic protection data. Output the cathodic protection effectiveness of the buried pipeline according to the cathodic protection parameters. The cathodic protection of the buried pipeline includes the sacrificial anode method and the impressed current method. The cathodic protection effectiveness of the buried pipeline includes the sacrificial anode protection effectiveness and the impressed current protection effectiveness. The sacrificial anode protection effectiveness is the cathodic protection effectiveness of the buried pipeline using the sacrificial anode method, and the impressed current protection effectiveness is the cathodic protection effectiveness of the buried pipeline using the impressed current method;

[0109] S4: Preset the cathodic protection effectiveness threshold of the buried pipeline. When the cathodic protection effectiveness of the buried pipeline is less than the cathodic protection effectiveness threshold of the buried pipeline, the Beidou satellite navigation system sends a cathodic protection regulation signal for the buried pipeline, and the cathodic protection parameters and the soil corrosion parameters are regulated through the automatic regulation system of the buried pipeline until the cathodic protection effectiveness of the buried pipeline is greater than or equal to the cathodic protection effectiveness threshold;

[0110] S5: Upload the cathodic protection information of the buried pipeline to the cloud server. The cathodic protection information of the buried pipeline includes the historical cathodic protection data set of the buried pipeline, the soil corrosivity result, the cathodic protection effectiveness of the buried pipeline, and the cathodic protection regulation signal of the buried pipeline.

[0111] S6: Preset a depolarization period according to the cathodic protection information of the buried pipeline. The cloud server conducts a depolarization test on the buried pipeline according to the depolarization period and outputs the polarization effectiveness of the buried pipeline. The polarization effectiveness of the buried pipeline includes high polarization effectiveness of the buried pipeline and low polarization effectiveness of the buried pipeline.

[0112] In this embodiment, a soil corrosivity evaluation model is constructed according to the soil corrosion parameters and the soil corrosivity result is output. The soil corrosivity result includes strong soil corrosivity result, medium soil corrosivity result, relatively weak soil corrosivity result, and weak soil corrosivity result. It is specifically implemented through the following steps:

[0113] S201: Obtain the soil corrosion parameter evaluation scores according to the soil corrosion parameters. The soil corrosion parameter evaluation scores include soil resistivity evaluation score, pipeline natural corrosion potential evaluation score, redox potential evaluation score, soil pH evaluation score, soil texture evaluation score, soil water content evaluation score, soil salt content evaluation score, and soil chlorine content evaluation score.

[0114] S202: Calculate the soil corrosivity evaluation score according to the soil corrosion parameter evaluation scores and construct the soil corrosivity evaluation model to comprehensively evaluate the soil corrosivity. Determine whether to monitor the cathodic protection effectiveness of the buried pipeline according to the strength of the soil corrosivity, reduce the workload and improve the work efficiency. The calculation formula of the soil corrosivity evaluation score is:

[0115] N = N 1 + N 2 + N 3 + N 4 + N 5 + N 6 + N 7 + N 8 ,

[0116] where N is the soil corrosivity evaluation score, N 1 is the soil resistivity evaluation score, N 2 is the pipeline natural corrosion potential evaluation score, N 3 is the redox potential evaluation score, N 4 is the soil pH evaluation score, N 5 is the soil texture evaluation score, N 6 is the soil water content evaluation score, N 7 is the soil salt content evaluation score, N8 is the evaluation score of soil chlorine content;

[0117] S203: Obtain the soil corrosivity evaluation threshold, where the soil corrosivity evaluation threshold includes the strong soil corrosivity threshold, the medium soil corrosivity threshold, and the weak soil corrosivity threshold, and obtain the soil corrosivity result by comparing the soil corrosivity evaluation score and the soil corrosivity evaluation threshold;

[0118] Judge the soil corrosivity evaluation score. When the soil corrosivity evaluation score is greater than or equal to the strong soil corrosivity threshold, output the strong soil corrosivity result;

[0119] When the soil corrosivity evaluation score is greater than or equal to the medium soil corrosivity threshold and less than the strong soil corrosivity threshold, output the medium soil corrosivity result;

[0120] When the soil corrosivity evaluation score is greater than or equal to the weak soil corrosivity threshold and less than the medium soil corrosivity threshold, output the weak soil corrosivity result;

[0121] When the soil corrosivity evaluation score is less than the weak soil corrosivity threshold, output the very weak soil corrosivity result.

[0122] In this embodiment, obtain the soil corrosion parameter evaluation score according to the soil corrosion parameters. The soil corrosion parameter evaluation score includes the soil resistivity evaluation score, the pipeline natural corrosion potential evaluation score, the redox potential evaluation score, the soil pH evaluation score, the soil texture evaluation score, the soil water content evaluation score, the soil salt content evaluation score, and the soil chlorine content evaluation score, and can be specifically implemented through the following steps:

[0123] S201-1: The expression of the soil resistivity evaluation score is:

[0124]

[0125] where, N 1 is the soil resistivity evaluation score, ρ is the soil resistivity, and the unit is ohm·meter;

[0126] S201-2: The expression of the pipeline natural corrosion potential evaluation score is:

[0127]

[0128] where, N 2 is the pipeline natural corrosion potential evaluation score, E is the pipeline natural corrosion potential, and the unit is millivolt;

[0129] S201-3: The expression of the redox potential evaluation score is:

[0130]

[0131] Among them, N 3 is the redox potential evaluation score, Eh is the redox potential, and the unit is millivolt;

[0132] S201-5: The expression of the soil pH evaluation score is:

[0133]

[0134] Among them, N 4 is the soil pH evaluation score, and pH is the soil pH;

[0135] S201-5: The expression of the soil texture evaluation score is:

[0136]

[0137] Among them, N 5 is the soil texture evaluation score;

[0138] S201-6: The expression of the soil water content evaluation score is:

[0139]

[0140] Among them, N 6 is the soil water content evaluation score, ω is the soil water content, and the unit is %;

[0141] S201-7: The expression of the soil salt content evaluation score is:

[0142]

[0143] Among them, N 7 is the soil salt content evaluation score, C s is the soil salt content, and the unit is %;

[0144] S201-8: The expression of the soil chlorine content evaluation score is:

[0145]

[0146] Among them, N 8 is the soil chlorine content evaluation score, C Cl is the soil chlorine content, and the unit is %.

[0147] In this embodiment, when the soil corrosivity evaluation model outputs the results of strong soil corrosivity and medium soil corrosivity, based on the Beidou spatio-temporal cathodic protection data, the cathodic protection parameters within a range with a radius of 500 meters centered on the buried pipeline monitoring point are obtained, and remote buried pipeline cathodic protection monitoring and regulation are carried out intelligently and with high precision. According to the cathodic protection parameters, the effectiveness of buried pipeline cathodic protection is output. The buried pipeline cathodic protection includes the sacrificial anode method and the impressed current method. The effectiveness of buried pipeline cathodic protection includes the effectiveness of sacrificial anode protection and the effectiveness of impressed current protection. Specifically, it can be achieved through the following steps:

[0148] S301: Obtain the sacrificial anode protection parameters according to the cathodic protection parameters, obtain the effectiveness of the sacrificial anode protection parameters according to the sacrificial anode protection parameters, and output the effectiveness of the sacrificial anode protection. The sacrificial anode protection parameters include the sacrificial anode protection potential, the sacrificial anode protection rate, and the sacrificial anode protection degree. The effectiveness of the sacrificial anode protection parameters includes the effectiveness of the sacrificial anode protection potential, the effectiveness of the sacrificial anode protection rate, and the effectiveness of the sacrificial anode protection degree;

[0149] S302: Obtain the impressed current protection parameters according to the cathodic protection parameters, obtain the effectiveness of the impressed current protection parameters according to the impressed current protection parameters, and output the effectiveness of the impressed current protection. The impressed current protection parameters include the cathode power-on point potential, the impressed current protection potential, the impressed current operation rate, and the impressed current protection degree. The effectiveness of the impressed current protection parameters includes the effectiveness of the cathode power-on point potential, the effectiveness of the impressed current protection potential, the effectiveness of the impressed current operation rate, and the effectiveness of the impressed current protection degree.

[0150] In this embodiment, obtaining the sacrificial anode protection parameters according to the cathodic protection parameters, obtaining the effectiveness of the sacrificial anode protection parameters according to the sacrificial anode protection parameters, and outputting the effectiveness of the sacrificial anode protection can be specifically implemented through the following steps:

[0151] S301-1: Preset the sacrificial anode protection potential range according to the buried pipeline material, judge the sacrificial anode protection potential. When the sacrificial anode protection potential is within the sacrificial anode protection potential range, the effectiveness value of the sacrificial anode protection potential is 1. When the sacrificial anode protection potential is outside the sacrificial anode protection potential range, the effectiveness value of the sacrificial anode protection potential is 0;

[0152] S301-2: Calculate the sacrificial anode protection rate according to the cathodic protection parameters. The calculation formula is:

[0153]

[0154] Among them, β is the sacrificial anode protection rate, with the unit of %, L is the total length of the buried pipeline, with the unit of meter, and L W is the length of the buried pipeline that is not effectively protected, with the unit of meter;

[0155] When the sacrificial anode protection rate is 100%, the effectiveness value of the sacrificial anode protection rate is 1. When the sacrificial anode protection rate is less than 100%, the effectiveness value of the sacrificial anode protection rate is 0;

[0156] S301-3: Calculate the sacrificial anode protection degree according to the cathodic protection parameters. The calculation formula is:

[0157]

[0158] Among them, η is the sacrificial anode protection degree, with the unit of %, and G 1 is the weight loss of the cathodic protection potential inspection coupon without application, with the unit of gram, and G 2 is the weight loss of the cathodic protection potential inspection coupon with application, with the unit of gram, and S 1 is the exposed area of the cathodic protection potential inspection coupon without application, with the unit of square centimeter, and S 2 is the exposed area of the cathodic protection potential inspection coupon with application, with the unit of square centimeter;

[0159] When the sacrificial anode protection degree is greater than or equal to 85%, the effectiveness value of the sacrificial anode protection degree is 1. When the sacrificial anode protection degree is less than 85%, the effectiveness value of the sacrificial anode protection degree is 0;

[0160] S301-4: Calculate the sacrificial anode protection effectiveness according to the effectiveness of the sacrificial anode protection parameters. The calculation formula is:

[0161]

[0162] Among them, ε is the sacrificial anode protection effectiveness, with the unit of %, and ε 1 is the effectiveness of the sacrificial anode protection potential, with the unit of %, and ε 2 is the effectiveness of the sacrificial anode protection rate, with the unit of %, and ε 3 is the effectiveness of the sacrificial anode protection degree, with the unit of %.

[0163] In this embodiment, an impressed current protection parameter is obtained according to the cathodic protection parameter, and the effectiveness of the impressed current protection parameter is obtained according to the impressed current protection parameter, and the effectiveness of the impressed current protection is output. The impressed current protection parameter includes the potential of the cathode power-on point, the impressed current protection potential, the impressed current operation rate, and the impressed current protection degree. The effectiveness of the impressed current protection parameter includes the effectiveness of the potential of the cathode power-on point, the effectiveness of the impressed current protection potential, the effectiveness of the impressed current operation rate, and the effectiveness of the impressed current protection degree. Specifically, it can be implemented through the following steps:

[0164] S302-1: Obtain the maximum protection potential of the buried pipeline, and judge the potential of the cathode power-on point. When the potential of the cathode power-on point is less than the maximum protection potential of the buried pipeline, the effectiveness value of the potential of the cathode power-on point is 1. When the potential of the cathode power-on point is greater than or equal to the maximum protection potential of the buried pipeline, the effectiveness value of the potential of the cathode power-on point is 0;

[0165] S302-2: Preset the impressed current protection potential range according to the material of the buried pipeline, and judge the impressed current protection potential. When the impressed current protection potential is within the impressed current protection potential range, the effectiveness value of the impressed current protection potential is 1. When the impressed current protection potential is outside the impressed current protection potential range, the effectiveness value of the impressed current protection potential is 0;

[0166] S302-3: Calculate the impressed current operation rate according to the cathodic protection parameter. The calculation formula is:

[0167]

[0168] where is the impressed current operation rate, with the unit of %, t is the effective operation time of the cathodic protection measure within one year, with the unit of hour, T is the number of hours in a whole year, and the value is 8760 hours;

[0169] When the impressed current operation rate is greater than or equal to 98%, the effectiveness value of the impressed current operation rate is 1. When the impressed current operation rate is less than 98%, the effectiveness value of the impressed current operation rate is 0;

[0170] S302-4: Calculate the impressed current protection degree according to the cathodic protection parameter. The calculation formula is:

[0171]

[0172] where κ is the impressed current protection degree, η is the sacrificial anode protection degree, with the unit of %, G 1 is the weight loss of the inspection coupon without applying the cathodic protection potential, with the unit of gram, G 2The weight loss of the inspection coupon for applying the cathodic protection potential, in grams, S 1 The exposed area of the inspection coupon without applying the cathodic protection potential, in square centimeters, S 2 The exposed area of the inspection coupon for applying the cathodic protection potential, in square centimeters;

[0173] When the external current protection degree is greater than or equal to 85%, the effectiveness value of the external current protection degree is 1; when the external current protection degree is less than 85%, the effectiveness value of the external current protection degree is 0;

[0174] S302-5: Calculate the external current protection effectiveness according to the effectiveness of the external current protection parameters. The calculation formula is:

[0175]

[0176] where φ is the external current protection effectiveness, in %, φ 1 is the effectiveness of the cathodic power-on point potential, in %, φ 2 is the effectiveness of the external current protection potential, in %, φ 3 is the effectiveness of the external current operation rate, in %, φ 4 is the effectiveness of the external current protection degree, in %.

[0177] In this embodiment, a depolarization period is preset according to the buried pipeline cathodic protection information. The cloud server performs a depolarization test on the buried pipeline according to the depolarization period and outputs the buried pipeline polarization effectiveness to evaluate the long-term effectiveness of the buried pipeline cathodic protection system. The buried pipeline polarization effectiveness includes the high effectiveness of the buried pipeline polarization and the low effectiveness of the buried pipeline polarization, and can be specifically implemented through the following steps:

[0178] S601: Obtain the energized potential of the buried pipeline through a voltmeter. The energized potential of the buried pipeline is the potential of the buried pipeline when the cathodic protection of the buried pipeline operates normally;

[0179] S602: Synchronously interrupt the buried pipeline current through a current synchronization interrupter, and obtain the off-potential of the buried pipeline through a voltmeter. The off-potential of the buried pipeline is the potential of the buried pipeline when the buried pipeline current is interrupted;

[0180] S603: Keep interrupting the buried pipeline current and record the depolarization potential of the buried pipeline. The depolarization potential of the buried pipeline is the potential of the buried pipeline when the buried pipeline current is at a stable depolarization level;

[0181] S604: Calculate the cathodic polarization attenuation value of the buried pipeline according to the off-potential of the buried pipeline and the depolarization potential of the buried pipeline. The calculation formula is:

[0182] △E = |E J - E off |,

[0183] where △E is the cathodic polarization attenuation value of the buried pipeline, with the unit of millivolt, E J is the depolarization potential of the buried pipeline, with the unit of millivolt, Eoff is the off - power potential of the buried pipeline, with the unit of millivolt, and |·| is the absolute value;

[0184] S605: Preset the cathodic polarization attenuation threshold of the buried pipeline, and obtain the polarization effectiveness of the buried pipeline by comparing the cathodic polarization attenuation value of the buried pipeline with the cathodic polarization attenuation threshold of the buried pipeline;

[0185] Judge the cathodic polarization attenuation value of the buried pipeline. When the cathodic polarization attenuation value of the buried pipeline is greater than or equal to the cathodic polarization attenuation threshold of the buried pipeline, output the high polarization effectiveness of the buried pipeline;

[0186] When the cathodic polarization attenuation value of the buried pipeline is less than the cathodic polarization attenuation threshold of the buried pipeline, output the low polarization effectiveness of the buried pipeline.

[0187] An intelligent monitoring device for cathodic protection of buried pipelines empowered by Beidou precise time - space includes a data acquisition module, a soil corrosivity evaluation module, a cathodic protection effectiveness evaluation module, a cathodic protection effectiveness regulation module, a data upload module, and a depolarization module;

[0188] The data acquisition module is used to set up monitoring points for the buried pipeline and preset the monitoring period of the buried pipeline, and collect cathodic protection data of the buried pipeline at the monitoring points of the buried pipeline according to the monitoring period of the buried pipeline. The cathodic protection data of the buried pipeline includes Beidou time - space cathodic protection data, soil corrosion parameters, and cathodic protection parameters;

[0189] The soil corrosivity evaluation module is used to construct a soil corrosivity evaluation model based on the soil corrosion parameters and output the soil corrosivity result. The soil corrosivity result includes strong soil corrosivity result, medium soil corrosivity result, weak - medium soil corrosivity result, and weak soil corrosivity result;

[0190] When the soil corrosivity evaluation model outputs the strong soil corrosivity result and the medium soil corrosivity result, the cathodic protection effectiveness evaluation module is used to obtain the cathodic protection parameters within a range with a radius of 500 meters centered on the monitoring point of the buried pipeline based on the Beidou time - space cathodic protection data, and output the cathodic protection effectiveness of the buried pipeline according to the cathodic protection parameters. The cathodic protection effectiveness of the buried pipeline includes sacrificial anode protection effectiveness and impressed current protection effectiveness;

[0191] The cathodic protection effectiveness regulation module is used to preset the cathodic protection effectiveness threshold of the buried pipeline. When the cathodic protection effectiveness of the buried pipeline is less than the cathodic protection effectiveness threshold of the buried pipeline, the Beidou satellite navigation system sends a cathodic protection regulation signal for the buried pipeline, and the cathodic protection parameters and the soil corrosion parameters are regulated through the automatic regulation system of the buried pipeline until the cathodic protection effectiveness of the buried pipeline is greater than or equal to the cathodic protection effectiveness threshold of the buried pipeline;

[0192] The data uploading module is used to upload the cathodic protection information of the buried pipeline to the cloud server. The cathodic protection information of the buried pipeline includes the historical cathodic protection data set of the buried pipeline, the soil corrosivity result, the cathodic protection effectiveness of the buried pipeline, and the cathodic protection regulation signal for the buried pipeline;

[0193] The depolarization module is used to preset the depolarization period according to the cathodic protection information of the buried pipeline. The cloud server conducts a depolarization test on the buried pipeline according to the depolarization period and outputs the polarization effectiveness of the buried pipeline. The polarization effectiveness of the buried pipeline includes the high polarization effectiveness of the buried pipeline and the low polarization effectiveness of the buried pipeline.

[0194] The computer storage medium of the embodiment 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 with 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.

[0195] The computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries the computer-readable program code. 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 used by or in combination with an instruction execution system, apparatus, or device.

[0196] 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. 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, 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., by using an Internet service provider to connect through the Internet).

[0197] As described above, the above are only the preferred embodiments of the present invention and do not impose any formal limitations on the present invention. Although the present invention has been disclosed as above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or refinements to the equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and refinement made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for monitoring cathodic protection of buried pipelines, characterized in that: The implementation of the buried pipeline cathodic protection monitoring method comprises the following steps: Collecting buried pipeline cathodic protection data, including Beidou space-time cathodic protection data, soil corrosion parameters, and cathodic protection parameters; Constructing a soil corrosivity evaluation model according to the soil corrosion parameters and outputting soil corrosivity results, wherein the soil corrosivity results include soil strong corrosivity results, soil medium corrosivity results, soil weak corrosivity results, and soil weak corrosivity results; When the soil strong corrosivity result and the soil medium corrosivity result are output, the cathodic protection parameters are obtained based on the Beidou spatiotemporal cathodic protection data and the buried pipeline cathodic protection effectiveness is output, wherein the buried pipeline cathodic protection effectiveness includes the sacrificial anode protection effectiveness and the impressed current protection effectiveness; Preset a buried pipeline cathodic protection effectiveness threshold, and when the buried pipeline cathodic protection effectiveness is less than the buried pipeline cathodic protection effectiveness threshold, send a buried pipeline cathodic protection control signal to control the cathodic protection parameter and the soil corrosion parameter; Uploading buried pipeline cathodic protection information to a cloud server, the buried pipeline cathodic protection information including a historical buried pipeline cathodic protection data set, the soil corrosivity result, the buried pipeline cathodic protection effectiveness, and the buried pipeline cathodic protection control signal; Performing a depolarization test according to the buried pipeline cathodic protection information and outputting the buried pipeline polarization effectiveness, wherein the buried pipeline polarization effectiveness includes a buried pipeline polarization high effectiveness and a buried pipeline polarization low effectiveness; The step of constructing a soil corrosivity evaluation model according to the soil corrosion parameters and outputting a soil corrosivity result specifically includes: Obtaining a soil corrosion parameter evaluation score according to the soil corrosion parameter; Calculating a soil corrosivity evaluation score according to the soil corrosion parameter evaluation score and constructing the soil corrosivity evaluation model; The soil corrosivity result is obtained by comparing the soil corrosivity evaluation score with the soil corrosivity evaluation threshold.

2. The buried pipeline cathodic protection monitoring method according to claim 1, characterized in that: When the soil strong corrosiveness result and the soil medium corrosiveness result are output, obtaining the cathodic protection parameters based on the Beidou spatiotemporal cathodic protection data and outputting the cathodic protection effectiveness of the buried pipeline specifically includes: Obtain sacrificial anode protection parameters according to the cathodic protection parameters, obtain the validity of sacrificial anode protection parameters according to the sacrificial anode protection parameters and output the validity of sacrificial anode protection, wherein the sacrificial anode protection parameters include sacrificial anode protection potential, sacrificial anode protection rate and sacrificial anode protection degree, and the validity of the sacrificial anode protection parameters includes the validity of sacrificial anode protection potential, the validity of sacrificial anode protection rate and the validity of sacrificial anode protection degree; According to the cathode protection parameters, external current protection parameters are obtained, and according to the external current protection parameters, the validity of the external current protection parameters is obtained and the validity of the external current protection is output, the external current protection parameters include the cathode power-on point potential, the external current protection potential, the external current operation rate, and the external current protection degree. The validity of the external current protection parameters includes the validity of the cathode power-on point potential, the validity of the external current protection potential, the validity of the external current operation rate, and the validity of the external current protection degree.

3. The buried pipeline cathodic protection monitoring method according to claim 2, characterized in that: The obtaining of sacrificial anode protection parameters according to the cathode protection parameters, obtaining the validity of the sacrificial anode protection parameters according to the sacrificial anode protection parameters and outputting the validity of the sacrificial anode protection specifically includes: Preset a sacrificial anode protection potential range, and obtain the effectiveness of the sacrificial anode protection potential by comparing the sacrificial anode protection potential with the sacrificial anode protection potential range; The sacrificial anode protection rate is calculated according to the cathodic protection parameters, and the calculation formula is: , where β is the sacrificial anode protection rate, L is the total length of the buried pipeline, and L W The length of buried pipelines was not effectively protected; Obtaining the effectiveness of the sacrificial anode protection rate by determining the sacrificial anode protection rate; The sacrificial anode protection degree is calculated according to the cathodic protection parameters, and the calculation formula is: , where η is the sacrificial anode protection degree, G1 is the weight loss of the inspection piece without applying the cathodic protection potential, G2 is the weight loss of the inspection piece with the cathodic protection potential, S1 is the exposed area of ​​the inspection piece without applying the cathodic protection potential, and S2 is the exposed area of ​​the inspection piece with the cathodic protection potential; Obtaining the effectiveness of the sacrificial anode protection degree by judging the sacrificial anode protection degree; The sacrificial anode protection effectiveness is calculated according to the sacrificial anode protection parameter effectiveness, and the calculation formula is: ,in, For the effectiveness of sacrificial anode protection, For the effectiveness of sacrificial anode protection potential, To sacrifice the effectiveness of the anode protection rate, The effectiveness of sacrificial anode protection.

4. The buried pipeline cathodic protection monitoring method according to claim 2, characterized in that: The obtaining of impressed current protection parameters according to the cathode protection parameters, obtaining the validity of impressed current protection parameters according to the impressed current protection parameters and outputting the impressed current protection validity specifically include: Obtaining the effectiveness of the cathode power-on point potential by judging the maximum protection potential of the buried pipeline and the cathode power-on point potential; Obtaining the validity of the impressed current protection potential by determining the impressed current protection potential range and the impressed current protection potential; The impressed current operation rate is calculated according to the cathodic protection parameters, and the calculation formula is: ,in, is the impressed current operation rate, t is the effective operation time of the cathodic protection measures in one year, and T is the number of hours in a year; Obtaining the validity of the impressed current operation rate by determining the impressed current operation rate; The impressed current protection degree is calculated according to the cathodic protection parameters, and the calculation formula is: ,in, is the impressed current protection degree, η is the sacrificial anode protection degree, G1 is the weight loss of the inspection piece without applying the cathodic protection potential, G2 is the weight loss of the inspection piece with the cathodic protection potential, S1 is the exposed area of ​​the inspection piece without applying the cathodic protection potential, S2 is the exposed area of ​​the inspection piece with the cathodic protection potential; Obtaining the validity of the impressed current protection degree by judging the impressed current protection degree; The impressed current protection effectiveness is calculated according to the impressed current protection parameter effectiveness, and the calculation formula is: ,in, For the effectiveness of impressed current protection, is the effectiveness of the cathode energization point potential, For the effectiveness of impressed current protection potential, is the validity of the impressed current operating rate, It is the effectiveness of impressed current protection.

5. The buried pipeline cathodic protection monitoring method according to claim 1, characterized in that: The performing of the depolarization test according to the buried pipeline cathodic protection information and outputting the buried pipeline polarization effectiveness specifically includes: Obtain the electrical potential of the buried pipeline; Synchronously interrupt the buried pipeline current and obtain the buried pipeline power-off potential; Maintaining interruption of the buried pipeline current and recording the buried pipeline depolarization potential; The cathode polarization attenuation value of the buried pipeline is calculated according to the power-off potential of the buried pipeline and the depolarization potential of the buried pipeline. The calculation formula is: , where △E is the cathode polarization attenuation value of the buried pipeline, E J is the depolarization potential of the buried pipeline, E off is the power-off potential of the buried pipeline, |·| is the absolute value; A cathode polarization attenuation threshold of the buried pipeline is preset, and the polarization validity of the buried pipeline is obtained by comparing the cathode polarization attenuation value of the buried pipeline with the cathode polarization attenuation threshold of the buried pipeline.

6. A buried pipeline cathodic protection monitoring device using the buried pipeline cathodic protection monitoring method according to claim 1, characterized in that: It includes data acquisition module, soil corrosivity evaluation module, cathodic protection effectiveness evaluation module, cathodic protection effectiveness control module, data upload module and depolarization module; The data acquisition module is used to collect buried pipeline cathodic protection data, and the buried pipeline cathodic protection data includes Beidou space-time cathodic protection data, soil corrosion parameters, and cathodic protection parameters; The soil corrosivity evaluation module is used to construct a soil corrosivity evaluation model according to the soil corrosion parameters and output soil corrosivity results, wherein the soil corrosivity results include soil strong corrosivity results, soil medium corrosivity results, soil weak corrosivity results, and soil weak corrosivity results; The cathodic protection effectiveness evaluation module is used to obtain the cathodic protection parameters and output the effectiveness of the buried pipeline cathodic protection based on the Beidou spatiotemporal cathodic protection data when outputting the soil strong corrosivity result and the soil medium corrosivity result. The effectiveness of the buried pipeline cathodic protection includes the effectiveness of sacrificial anode protection and the effectiveness of impressed current protection. The cathodic protection effectiveness control module is used to preset a buried pipeline cathodic protection effectiveness threshold, and when the buried pipeline cathodic protection effectiveness is less than the buried pipeline cathodic protection effectiveness threshold, send a buried pipeline cathodic protection control signal to control the cathodic protection parameter and the soil corrosion parameter; The data uploading module is used to upload the buried pipeline cathodic protection information to the cloud server, wherein the buried pipeline cathodic protection information includes a historical buried pipeline cathodic protection data set, the soil corrosivity result, the buried pipeline cathodic protection effectiveness, and the buried pipeline cathodic protection control signal; The depolarization module is used to perform a depolarization test according to the buried pipeline cathodic protection information and output the buried pipeline polarization effectiveness, wherein the buried pipeline polarization effectiveness includes a buried pipeline polarization high effectiveness and a buried pipeline polarization low effectiveness.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the buried pipeline cathodic protection monitoring method as described in any one of claims 1-5 is implemented.

8. A storage medium containing computer executable instructions, characterized in that: The computer executable instructions are used to execute the buried pipeline cathodic protection monitoring method as described in any one of claims 1-5 when executed by a computer processor.

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