Buried pipeline cathode protection monitoring and management system

Abstract

The utility model belongs to the technical field of underground pipeline protection, and provides a buried pipeline cathode protection monitoring and management system, which comprises a cathode protection potential acquisition circuit suitable for monitoring cathode protection potential data in real time; the soil resistivity acquisition circuit is suitable for acquiring soil resistivity parameters of the target area; the ER corrosion rate acquisition circuit is suitable for acquiring corrosion rate information of the metal structure; the MCU main control circuit is respectively in circuit connection with the cathode protection potential acquisition circuit, the soil resistivity acquisition circuit and the ER corrosion rate acquisition circuit; and the data management platform is in circuit connection with the MCU main control circuit so as to receive the transmission instruction and store the data uploaded by the wireless communication circuit. According to the utility model, the cathode protection potential, the soil resistivity and the corrosion rate of a metal structure can be monitored in real time, the corrosion state and the cathode protection effect of the pipeline can be dynamically tracked, and the potential corrosion risk can be found in time.

Description

Technical Field

[0001] This utility model belongs to the field of underground pipeline protection technology, specifically relating to a cathodic protection monitoring and management system for buried pipelines. Background Technology

[0002] With the large-scale application of buried pipelines in energy transmission, chemical industry, municipal engineering, and other fields, their corrosion problems have received increasing attention. Cathodic protection is one of the important means to prevent corrosion of buried pipelines. By applying an external current or a sacrificial anode, the pipeline surface is kept at a negative potential, thereby inhibiting the occurrence of corrosion reactions.

[0003] In related technologies, the potentiometric method is commonly used to determine the protection status of a protected object. Generally, a protection potential below -0.85Vcse is considered sufficient to indicate that the object is protected. However, in practical applications, due to varying environments, the corresponding protection potential parameters will differ. For example, this standard example is not suitable for desert regions where the underground environment is dry. Furthermore, the measurement accuracy and reliability in complex environments need improvement, and the real-time performance and stability of data transmission still require optimization. Utility Model Content

[0004] In view of this, the present invention provides a buried pipeline cathodic protection monitoring and management system to solve the problem that the measurement accuracy and reliability in complex environments in the prior art need to be improved.

[0005] This utility model provides a cathodic protection monitoring and management system for buried pipelines, comprising: a cathodic protection potential acquisition circuit, suitable for real-time monitoring of cathodic protection potential data; a soil resistivity acquisition circuit, suitable for acquiring soil resistivity parameters of the target area; an ER corrosion rate acquisition circuit, suitable for acquiring corrosion rate information of the metal structure; an MCU main control circuit, respectively connected to the cathodic protection potential acquisition circuit, the soil resistivity acquisition circuit, and the ER corrosion rate acquisition circuit, to control the data acquisition timing, process the raw data, and generate transmission instructions based on the acquired potential data, resistivity data, and corrosion rate data; and a data management platform, connected to the MCU main control circuit, to receive the transmission instructions, store the data uploaded by the wireless communication circuit, and provide data analysis, visualization, and remote control functions.

[0006] In one optional implementation, the wireless communication circuit is a wireless transmission module based on 4G / 5G or LoRa protocols.

[0007] In one optional implementation, the MCU main control circuit includes a data filtering module, an analog-to-digital conversion module, and a communication protocol adaptation module, used to optimize data accuracy and transmission efficiency.

[0008] In one optional implementation, the data management platform further includes a corrosion trend prediction module to generate a corrosion risk warning report based on historical and real-time data.

[0009] In one alternative implementation, the ER corrosion rate acquisition circuit includes an electrochemical impedance spectroscopy or a linear polarization resistor to achieve dynamic measurement of the corrosion rate.

[0010] In one optional implementation, the buried pipeline cathodic protection monitoring and management system further includes a wireless communication circuit electrically connected to the MCU main control circuit and the data management platform.

[0011] In one optional implementation, the data management platform is equipped with a mobile terminal access interface to support users in viewing monitoring data and issuing control commands in real time via mobile devices.

[0012] In one alternative implementation, the soil resistivity acquisition circuit includes four probes and integrates a temperature compensation module.

[0013] The beneficial effects of this invention are as follows: This invention, through its cathodic protection potential acquisition circuit, soil resistivity acquisition circuit, and ER corrosion rate acquisition circuit, can monitor the cathodic protection potential, soil resistivity, and corrosion rate of the metal structure in real time. This allows the system to dynamically track the corrosion status of the pipeline and the effectiveness of cathodic protection, promptly detect potential corrosion risks, and thus identify corrosion risks in advance, optimize maintenance plans, and reduce unnecessary maintenance work. Simultaneously, timely detection and handling of corrosion problems effectively extend the service life of the pipeline and reduce the risk of leakage accidents caused by corrosion. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a block diagram of the composition of a buried pipeline cathodic protection monitoring and management system according to an embodiment of the present invention.

[0016] Explanation of reference numerals in the attached figures:

[0017] 110. Cathodic protection potential acquisition circuit; 120. Soil resistivity acquisition circuit; 130. ER corrosion rate acquisition circuit; 140. MCU main control circuit; 150. Data management platform; 160. Wireless communication circuit. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] The following is combined Figure 1 The following describes embodiments of the present invention.

[0023] like Figure 1As shown in the figure, according to an embodiment of the utility model, a cathodic protection monitoring and management system for buried pipelines is provided. The cathodic protection monitoring and management system includes: a cathodic protection potential acquisition circuit 110, suitable for real-time monitoring of cathodic protection potential data; a soil resistivity acquisition circuit 120, suitable for acquiring soil resistivity parameters of the target area; an ER corrosion rate acquisition circuit 130, suitable for acquiring corrosion rate information of the metal structure; an MCU main control circuit 140, which is respectively connected to the cathodic protection potential acquisition circuit 110, the soil resistivity acquisition circuit 120 and the ER corrosion rate acquisition circuit 130, to control the data acquisition timing, process the raw data and generate transmission instructions according to the acquired potential data, resistivity data and corrosion rate data; and a data management platform 150, which is connected to the MCU main control circuit 140 to receive transmission instructions and store the data uploaded by the wireless communication circuit 160, providing data analysis, visualization and remote control functions.

[0024] In this embodiment, the buried pipeline cathodic protection monitoring and management system mainly includes: cathodic protection potential acquisition circuit 110, soil resistivity acquisition circuit 120, ER corrosion rate acquisition circuit 130, MCU main control circuit 140, and data management platform 150.

[0025] The cathodic protection potential acquisition circuit 110 is used to monitor the cathodic protection potential data of the pipeline in real time. The cathodic protection potential is an important indicator for evaluating whether the pipeline is effectively protected. By accurately measuring the potential difference between the pipeline and the surrounding soil, the operational effectiveness of the cathodic protection system can be determined.

[0026] Soil resistivity is one of the key parameters affecting the effectiveness of cathodic protection. The soil resistivity acquisition circuit 120 can collect soil resistivity parameters of the target area. By measuring the soil's resistivity characteristics, the impact of soil on pipeline corrosion can be assessed, and a basis can be provided for the design and optimization of the cathodic protection system.

[0027] The ER corrosion rate acquisition circuit 130 is based on electrochemical principles. It calculates the corrosion rate of a metal by measuring its corrosion potential and corrosion current in an electrolyte solution. The ER corrosion rate acquisition circuit 130 can acquire corrosion rate information of metal structures in real time, thereby more directly and accurately evaluating the protective effect of the cathodic protection system.

[0028] The MCU main control circuit 140 is the control core of the system and is connected to the aforementioned acquisition circuits. Based on the acquired potential, resistivity, and corrosion rate data, it controls the timing of data acquisition, processes the raw data, and generates transmission commands. The MCU main control circuit 140 typically employs a low-power design, making it suitable for long-term field operation.

[0029] The data management platform 150 is connected to the MCU main control circuit 140 to receive transmission commands and store data uploaded by the wireless communication circuit 160. This platform has powerful data analysis capabilities, enabling it to process and visualize the collected data. It also supports remote control, allowing users to view and manage monitoring data anytime, anywhere.

[0030] Through the coordinated efforts of the above components, the buried pipeline cathodic protection monitoring and management system can achieve real-time monitoring and efficient management of the cathodic protection status of pipelines, effectively reduce the risk of pipeline corrosion, and ensure the safe operation of pipelines.

[0031] This invention provides a comprehensive analysis of the actual protection status of monitoring points by separately measuring soil resistivity and ER corrosion rate parameters at each monitoring point.

[0032] In environments with soil resistivity ranging from 100 to 1000 Ω×m, the minimum protection potential is -0.75V.

[0033] In environments where soil resistivity > 1000 Ω×m: the minimum protection potential is -0.65V;

[0034] When the corrosion rate is <0.01 mm / year, the cathodic protection meets the standards.

[0035] Furthermore, the MCU main control circuit 140 includes a data filtering module, an analog-to-digital conversion module, and a communication protocol adaptation module, which are used to optimize data accuracy and transmission efficiency.

[0036] In this embodiment, the main function of the data filtering module is to remove noise and interference from the acquired data, thereby improving the accuracy and reliability of the data. The data filtering module typically integrates multiple filtering algorithms, such as median filtering, median averaging filtering, recursive averaging filtering, and first-order hysteresis filtering. These algorithms can be selected and optimized according to different application scenarios and data characteristics. The analog-to-digital converter (ADC) module is the key component that converts the acquired analog signals into digital signals. Through sampling, quantization, and encoding processes, it converts continuously changing analog signals into discrete digital signals, supports multi-channel input, and can achieve high-precision signal conversion. The communication protocol adaptation module ensures efficient communication between the MCU main control circuit 140 and external devices. This module can adapt and optimize for different communication protocols, such as 4G / 5G and LoRa, thereby improving the efficiency and stability of data transmission. Through the collaborative work of these three modules, the MCU main control circuit 140 can effectively optimize data accuracy and transmission efficiency, providing reliable data processing and communication support for the buried pipeline cathodic protection monitoring and management system.

[0037] Furthermore, the data management platform 150 also includes a corrosion trend prediction module to generate corrosion risk warning reports based on historical and real-time data.

[0038] The corrosion trend prediction module utilizes historical monitoring data and real-time collected data such as cathodic protection potential, soil resistivity, and corrosion rate to establish corrosion prediction models. These models can be based on time series analysis, grey theory (such as the GM(1,1) model), or machine learning algorithms (such as BP neural networks and RBF networks). Through the corrosion trend prediction module, the data management platform 150 can achieve a shift from passive monitoring to proactive management, helping users identify corrosion risks in advance, optimize maintenance plans, and extend equipment lifespan.

[0039] Furthermore, the ER corrosion rate acquisition circuit 130 includes an electrochemical impedance spectroscopy or a linear polarization resistor to achieve dynamic measurement of the corrosion rate.

[0040] In this embodiment, electrochemical impedance spectroscopy (EIS) is an electrochemical testing technique that applies a small-amplitude sinusoidal potential or current perturbation signal and measures the system response. EIS can provide rich information on interface structure and kinetics. Linear polarization resistance (LPR) is a corrosion rate assessment technique based on polarization resistance measurement. Its principle is to apply a small potential change (typically ±10mV) near a stable corrosion potential and calculate the polarization resistance (Rp) by measuring the resulting current change, thereby estimating the corrosion rate.

[0041] By integrating EIS and LPR technologies, the ER corrosion rate acquisition circuit 130 can achieve dynamic measurement of corrosion rate, acquire corrosion rate data in real time, facilitate the timely detection of potential corrosion risks, and is suitable for corrosion monitoring in gas phase, liquid phase and multiphase systems, providing more accurate corrosion rate assessment.

[0042] Furthermore, the buried pipeline cathodic protection monitoring and management system also includes a wireless communication circuit 160, which is electrically connected to the MCU main control circuit 140 and the data management platform 150.

[0043] The wireless communication circuit 160 receives the collected cathodic protection data through its connection with the MCU main control circuit 140 and transmits it to the data management platform 150. It can operate stably in complex industrial environments, ensuring the accuracy and reliability of data transmission. Users can view the monitoring data in real time and perform remote control through remote monitoring terminals (such as mobile APP or Web platform).

[0044] Furthermore, the wireless communication circuit 160 is a wireless transmission module based on 4G / 5G or LoRa protocols.

[0045] By integrating 4G / 5G and LoRa wireless transmission modules, the buried pipeline cathodic protection monitoring and management system can select the most suitable communication method according to actual needs, achieving efficient and stable data transmission.

[0046] Furthermore, the data management platform 150 is equipped with a mobile terminal access interface to support users in viewing monitoring data and issuing control commands in real time via mobile devices.

[0047] The mobile terminal access interface of the data management platform 150 can provide users with efficient and convenient remote monitoring and management capabilities, significantly improving the intelligence level and operating efficiency of the buried pipeline cathodic protection system.

[0048] Furthermore, the soil resistivity acquisition circuit 120 includes four probes and integrates a temperature compensation module.

[0049] By combining the four-probe method and the temperature compensation module, the soil resistivity acquisition circuit 120 can provide high-precision measurement results and is suitable for different environmental conditions.

[0050] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation.

[0051] For those skilled in the art, various variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom remain within the protection scope of this invention.

Claims

1. A monitoring and management system for cathodic protection of buried pipelines, characterized in that, include: The cathodic protection potential acquisition circuit is suitable for real-time monitoring of cathodic protection potential data. Soil resistivity acquisition circuit, suitable for acquiring soil resistivity parameters of target areas; ER corrosion rate acquisition circuit, suitable for acquiring corrosion rate information of metal structures; The MCU main control circuit is connected to the cathodic protection potential acquisition circuit, the soil resistivity acquisition circuit and the ER corrosion rate acquisition circuit respectively, so as to control the data acquisition timing, process the raw data and generate transmission instructions according to the acquired potential data, resistivity data and corrosion rate data. The data management platform is connected to the MCU main control circuit to receive the transmission instructions, store the data uploaded by the wireless communication circuit, and provide data analysis, visualization and remote control functions.

2. The buried pipeline cathodic protection monitoring and management system according to claim 1, characterized in that, The MCU main control circuit includes a data filtering module, an analog-to-digital conversion module, and a communication protocol adaptation module, which are used to optimize data accuracy and transmission efficiency.

3. The buried pipeline cathodic protection monitoring and management system according to claim 1, characterized in that, The data management platform also includes a corrosion trend prediction module to generate corrosion risk warning reports based on historical and real-time data.

4. The buried pipeline cathodic protection monitoring and management system according to claim 1, characterized in that, The ER corrosion rate acquisition circuit includes an electrochemical impedance spectroscopy or a linear polarization resistor to achieve dynamic measurement of the corrosion rate.

5. The buried pipeline cathodic protection monitoring and management system according to any one of claims 1 to 4, characterized in that, It also includes a wireless communication circuit, which is electrically connected to the MCU main control circuit and the data management platform.

6. The buried pipeline cathodic protection monitoring and management system according to claim 5, characterized in that, The wireless communication circuit is a wireless transmission module based on 4G / 5G or LoRa protocols.

7. The buried pipeline cathodic protection monitoring and management system according to any one of claims 1 to 4, characterized in that, The data management platform is equipped with a mobile terminal access interface to allow users to view monitoring data and issue control commands in real time via mobile devices.

8. The buried pipeline cathodic protection monitoring and management system according to any one of claims 1 to 4, characterized in that, The soil resistivity acquisition circuit includes four probes and integrates a temperature compensation module.

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