An on-line corrosion detector and on-line corrosion detection method for a hazardous chemical storage tank

Abstract

The application provides an online corrosion detector for a dangerous chemical storage tank and an online corrosion detection method. By designing an explosion-proof structure and a heat dissipation structure, the electric spark generated by the operation of the equipment itself is avoided to cause explosion, and the sensor drift or circuit failure caused by high temperature is avoided to ensure the continuity and accuracy of the detection data. By performing multi-dimensional corrosion detection on the dangerous chemical storage tank, multi-dimensional corrosion detection data is obtained to improve the comprehensiveness and accuracy of the detection. By processing the multi-dimensional corrosion detection data and corrosion evaluation, the corrosion information of the dangerous chemical storage tank is determined to provide clear disposal basis for the operation and maintenance personnel, improve the evaluation accuracy, greatly reduce the subjectivity and error of manual judgment, and transmit the corrosion information of the dangerous chemical storage tank to the remote center in real time to improve the emergency response time, provide time for timely maintenance, and avoid the explosion and poisoning risk caused by leakage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of equipment corrosion monitoring, in particular to an online corrosion detector for a dangerous chemical storage tank and an online corrosion detection method. BACKGROUND

[0002] The dangerous chemical storage tank is a core storage facility in a chemical park, an oil refinery, and a port logistics hub. The inner wall of the tank is directly in contact with the medium, and the outer wall is exposed to the environment. The tank is subjected to medium corrosion, environmental erosion, and stress for a long time, and is prone to corrosion failures such as tank wall thinning, weld cracking, and tank bottom perforation. The existing corrosion detection technology for dangerous chemical storage tanks has significant defects and cannot meet the precise and real-time monitoring requirements. The specific defects are as follows:

[0003] Off-line detection is mainly used, which is high-risk to personnel safety. The explosion-proof performance is insufficient, and the adaptability is poor. The detection dimension is single, and the evaluation accuracy is low. The key positions are not fully covered, and the risk of missing detection is high. Data transmission is lagging, and the early warning response is slow.

[0004] Therefore, it is urgent to develop an online corrosion detection scheme for dangerous chemical storage tanks with high explosion-proof level, multi-dimensional detection capability, full position coverage, and real-time early warning to fill the gap in the existing technology. SUMMARY

[0005] The present application provides an online corrosion detector for a dangerous chemical storage tank and an online corrosion detection method to solve the problems raised in the background art.

[0006] An online corrosion detector for a dangerous chemical storage tank comprises:

[0007] A sealed housing module comprising an explosion-proof structure and a heat dissipation structure for protecting the normal operation of the internal functional modules;

[0008] A corrosion detection module for multi-dimensional corrosion detection of the dangerous chemical storage tank to obtain multi-dimensional corrosion detection data;

[0009] A corrosion evaluation module for processing and corrosion evaluation of the multi-dimensional corrosion detection data to determine the corrosion information of the dangerous chemical storage tank;

[0010] A wireless communication module for real-time transmission of the corrosion information of the dangerous chemical storage tank to a remote center.

[0011] Preferably, the sealed housing module comprises:

[0012] An explosion-proof structure unit comprising an explosion-proof cavity and an intrinsically safe cavity, the explosion-proof cavity being used to accommodate the corrosion detection module, and the intrinsically safe cavity being used to accommodate the corrosion evaluation module and the wireless communication module;

[0013] The heat dissipation structure unit is provided with spiral heat dissipation fins outside the sealed shell and graphene heat conduction film attached to the inside, and is used for conducting heat generated by the internal functional module during operation.

[0014] Preferably, the corrosion detection module comprises:

[0015] The electrochemical detection unit is used for collecting the polarization resistance, corrosion current density and corrosion rate of the hazardous chemical storage tank to obtain electrochemical detection data.

[0016] The ultrasonic detection unit is used for detecting the thickness change of the tank wall of the hazardous chemical storage tank to obtain thickness detection data.

[0017] The medium characteristic detection unit is used for detecting the internal pH value, chloride ion concentration and temperature of the hazardous chemical storage tank to obtain medium characteristic detection data.

[0018] The environmental parameter detection unit is used for collecting the environmental temperature, environmental humidity and tank internal pressure of the hazardous chemical storage tank to obtain environmental parameter detection data.

[0019] Preferably, the corrosion evaluation module comprises:

[0020] The preprocessing unit is used for preprocessing the multi-dimensional corrosion detection data to obtain standard multi-dimensional corrosion detection data.

[0021] The data correlation unit is used for correlating the standard multi-dimensional corrosion detection data with each other to obtain a correlation feature vector.

[0022] The model analysis unit is used for inputting the correlation feature vector into a corrosion state analysis model and a corrosion trend prediction model respectively to output corrosion grade, corrosion factors and development trend as corrosion information of the hazardous chemical storage tank.

[0023] Preferably, the preprocessing unit comprises:

[0024] The data cleaning unit is used for filtering the multi-dimensional corrosion detection data to remove noise signals to obtain target denoising detection data.

[0025] The space-time alignment unit is used for establishing a unified time sequence database, interpolating and aligning the target denoising detection data to a unified time stamp, binding the target denoising detection data with a position based on a digital grid map to perform space alignment to obtain aligned detection data.

[0026] The standardization unit is used for standardizing the aligned detection data based on a preset standard to obtain standard multi-dimensional corrosion detection data.

[0027] Preferably, the data correlation unit comprises:

[0028] The index determination unit is configured to match the corrosion index library with the standard multi-dimensional corrosion detection data, select a target corrosion index conforming to the standard multi-dimensional corrosion detection data, and perform index mapping on the standard multi-dimensional corrosion detection data based on the target corrosion index to obtain target corrosion index features.

[0029] The first construction unit is configured to determine index correlations between the target corrosion indexes based on corrosion principles, and associate the target corrosion index features according to the index correlations to obtain first construction features.

[0030] The second construction unit is configured to perform numerical correlation statistics on the target corrosion index features based on a nonlinear statistical model, and establish second construction features based on the statistical results.

[0031] The third construction unit is configured to perform time sequence dynamic association on the target corrosion index features based on dynamic behavior relationships of the target corrosion index features on a time axis to obtain third construction features.

[0032] The weight allocation unit is configured to perform weight allocation for the target corrosion index features, the first construction features, the second construction features, and the third construction features based on the storage liquid characteristics in the hazardous chemical storage tank and the correlation between the storage liquid characteristics and the standard multi-dimensional corrosion detection data to obtain weighted weights.

[0033] The vector construction unit is configured to construct an associated feature vector based on the target corrosion index features, the first construction features, the second construction features, the third construction features, and corresponding weighted weights.

[0034] Preferably, the wireless communication module comprises:

[0035] The protocol selection unit is configured to configure a corresponding data transmission protocol based on the corrosion grade of the hazardous chemical storage tank.

[0036] The transmission strategy determination unit is configured to determine a data transmission strategy based on the corrosion grade of the hazardous chemical storage tank, specifically:

[0037] For a low-risk corrosion grade, the initial multi-dimensional corrosion detection data is directly compressed locally, and the compressed data is transmitted at a low transmission frequency.

[0038] For a medium-risk corrosion grade, local multi-dimensional corrosion detection data with a correlation degree greater than a preset correlation with corrosion information is selected, and the local multi-dimensional corrosion detection data is transmitted at a medium transmission frequency.

[0039] For a high-risk corrosion grade, full real-time transmission is started, and the initial multi-dimensional corrosion detection data, the corrosion information, and the positioning information of the online corrosion detector are transmitted at a high transmission frequency.

[0040] An adaptive adjustment unit is used for monitoring signal quality in a data transmission process, obtaining network delay and packet loss rate, automatically reducing transmission frequency when network delay and packet loss rate are greater than 5%, enabling data compression, and transmitting transmission data after priority sorting; when the network recovers and the packet loss rate is less than 1%, the normal transmission strategy is restored; in other cases, the normal transmission strategy is maintained.

[0041] Preferably, it further comprises an intelligent power supply module for providing power for the normal operation of the online corrosion detector, specifically comprising:

[0042] A battery pack unit containing a lithium battery pack supports wireless charging;

[0043] A battery management unit is used for real-time detection of power and low-power warning;

[0044] A mode selection unit is used to determine the power supply mode based on the corrosion level.

[0045] An online corrosion detection method for a hazardous chemical storage tank, comprising:

[0046] S1: Deploy the online corrosion detector at a designated location of the hazardous chemical storage tank;

[0047] S2: Perform multi-dimensional corrosion detection on the hazardous chemical storage tank to obtain multi-dimensional corrosion detection data;

[0048] S3: Process and evaluate the multi-dimensional corrosion detection data to determine the corrosion information of the hazardous chemical storage tank;

[0049] S4: Real-time transmission of the corrosion information of the hazardous chemical storage tank to the remote center.

[0050] Preferably, in S3, the multi-dimensional corrosion detection data is processed and evaluated to determine the corrosion information of the hazardous chemical storage tank, comprising:

[0051] Pretreatment of multi-dimensional corrosion detection data to obtain standard multi-dimensional corrosion detection data;

[0052] Correlate the standard multi-dimensional corrosion detection data to obtain a correlation feature vector;

[0053] Input the correlation feature vector into the corrosion state analysis model and the corrosion trend prediction model respectively, and output the corrosion level, the corrosion factor and the development trend as the corrosion information of the hazardous chemical storage tank.

[0054] Compared with the prior art, the present application has the following beneficial effects:

[0055] By designing the explosion-proof structure and the heat dissipation structure, the electric spark generated by the operation of the equipment itself is avoided to cause explosion, and the sensor drift or circuit failure caused by high temperature is avoided, so that the continuity and accuracy of the detection data are ensured, the multi-dimensional corrosion detection data of the dangerous chemical storage tank are obtained through multi-dimensional corrosion detection of the dangerous chemical storage tank, the comprehensiveness and accuracy of detection are improved, the corrosion information of the dangerous chemical storage tank is determined through processing and corrosion evaluation of the multi-dimensional corrosion detection data, clear disposal basis is provided for the operation and maintenance personnel, the evaluation accuracy is improved, the subjectivity and error of manual judgment are greatly reduced, the corrosion information of the dangerous chemical storage tank is transmitted to the remote center in real time, the emergency response time is improved, time for timely maintenance is provided, and the explosion and poisoning risk caused by leakage is avoided.

[0056] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the written description and claims.

[0057] The technical solutions of the present application will be further described in detail below with the help of the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0058] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0059] Figure 1 It is a structure diagram of an online corrosion detector for a dangerous chemical storage tank in an embodiment of the present application;

[0060] Figure 2 It is a structure diagram of the corrosion evaluation module;

[0061] Figure 3 It is a flowchart of an online corrosion detection method for a dangerous chemical storage tank in an embodiment of the present application. DETAILED DESCRIPTION

[0062] The preferred embodiments of the present application will be described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and do not limit the present application.

[0063] Example 1:

[0064] The embodiment of the present application provides an online corrosion detector for a dangerous chemical storage tank, as shown in Figure 1 , comprising:

[0065] The sealing shell module comprises an explosion-proof structure and a heat dissipation structure, and is used to protect the normal operation of the internal functional modules;

[0066] The corrosion detection module is used to perform multi-dimensional corrosion detection on hazardous chemical storage tanks and obtain multi-dimensional corrosion detection data.

[0067] The corrosion assessment module is used to process and assess multi-dimensional corrosion detection data to determine the corrosion information of hazardous chemical storage tanks.

[0068] The wireless communication module is used to transmit corrosion information of hazardous chemical storage tanks to a remote center in real time.

[0069] In this embodiment, the outer shell of the sealed outer shell module is made of a composite structure of stainless steel and polytetrafluoroethylene.

[0070] In this embodiment, the online corrosion detector is deployed at the lower part of the tank wall, the middle of the tank body, and the center of the tank bottom of the hazardous chemical storage tank, achieving a comprehensive and blind-spot-free deployment.

[0071] In this embodiment, multi-dimensional corrosion detection includes electrochemical corrosion detection, ultrasonic detection, media characteristic detection, and environmental parameter detection.

[0072] In this embodiment, corrosion information includes corrosion level, corrosion factors, and development trend.

[0073] In this embodiment, the wireless communication module integrates 4G / 5G and WiFi 6 dual-mode communication, supporting local short-range communication and long-range long-range communication.

[0074] The beneficial effects of the above design scheme are as follows: By designing explosion-proof and heat dissipation structures, explosions caused by electrical sparks generated during equipment operation are avoided; sensor drift or circuit failures caused by high temperatures are prevented, ensuring the continuity and accuracy of detection data; multi-dimensional corrosion detection of hazardous chemical storage tanks yields multi-dimensional corrosion detection data, improving the comprehensiveness and accuracy of detection; by processing and assessing the multi-dimensional corrosion detection data, the corrosion information of hazardous chemical storage tanks is determined, providing clear handling basis for operation and maintenance personnel, improving the accuracy of assessment, and significantly reducing the subjectivity and error of manual judgment; by transmitting the corrosion information of hazardous chemical storage tanks to a remote center in real time, emergency response time is improved, providing time for timely maintenance and avoiding the risk of explosion and poisoning caused by leaks.

[0075] Example 2:

[0076] Based on Embodiment 1, this embodiment of the invention provides an online corrosion detector for hazardous chemical storage tanks, wherein the sealed housing module includes:

[0077] The explosion-proof structural unit includes an explosion-proof cavity and an intrinsically safe cavity. The explosion-proof cavity is used to house the corrosion detection module, and the intrinsically safe cavity is used to house the corrosion assessment module and the wireless communication module.

[0078] The heat dissipation structure unit is provided with spiral heat dissipation fins outside the sealed shell and graphene heat conduction film attached to the inside, and is used for conducting heat generated by the internal functional module during operation.

[0079] The beneficial effects of the above design scheme are: through the specially designed explosion-proof cavity and intrinsically safe cavity, the electric spark generated by the operation of the device itself is avoided to cause explosion, the risk of the detection device becoming a safety hazard is eliminated from the hardware level, the heat generated by the internal module during operation is effectively conducted through the spiral heat dissipation fins arranged outside the sealed shell, the sensor drift or circuit failure caused by high temperature is avoided, and the continuity and accuracy of the detection data are ensured.

[0080] Embodiment 3:

[0081] Based on the basis of embodiment 1, the embodiment of the application provides an online corrosion detector for a dangerous chemical storage tank, and the corrosion detection module comprises:

[0082] The electrochemical detection unit is used for collecting the polarization resistance, corrosion current density and corrosion rate of the dangerous chemical storage tank to obtain electrochemical detection data.

[0083] The ultrasonic detection unit is used for detecting the thickness change of the tank wall of the dangerous chemical storage tank to obtain thickness detection data.

[0084] The medium property detection unit is used for detecting the internal pH value, chloride ion concentration and temperature of the dangerous chemical storage tank to obtain medium property detection data.

[0085] The environmental parameter detection unit is used for collecting the environmental temperature, environmental humidity and tank internal pressure of the dangerous chemical storage tank to obtain environmental parameter detection data.

[0086] In this embodiment, the electrochemical detection data, the thickness detection data, the medium property detection data and the environmental parameter detection data jointly constitute multi-dimensional corrosion detection data.

[0087] In this embodiment, the electrochemical detection unit adopts a three-electrode system, and the working electrode material is consistent with the inner wall of the storage tank.

[0088] In this embodiment, the ultrasonic detection unit adopts a high-frequency ultrasonic probe and is attached to the tank wall through a coupling agent.

[0089] The beneficial effects of the above design scheme are: through detection of the polarization resistance, corrosion current density and corrosion rate, the electrochemical action strength between the inner wall of the storage tank and the medium can be reflected in real time, through ultrasonic detection of the thickness change of the tank wall, the quantitative cumulative corrosion result can be achieved, through medium property detection, the driving factors of traceable corrosion can be achieved, through environmental parameter detection, external influencing factors can be covered, and the risk misjudgment caused by neglecting environmental influence is avoided.

[0090] Embodiment 4:

[0091] Based on the basis of embodiment 1, the embodiment of the application provides an online corrosion detector for a dangerous chemical storage tank, as shown in the accompanying drawings, the corrosion evaluation module comprises: Figure 2

[0092] A preprocessing unit is configured to preprocess multi-dimensional corrosion detection data to obtain standard multi-dimensional corrosion detection data.

[0093] A data association unit is configured to associate the standard multi-dimensional corrosion detection data with each other to obtain an associated feature vector.

[0094] A model analysis unit is configured to input the associated feature vector into a corrosion state analysis model and a corrosion trend prediction model respectively, and output a corrosion grade, a corrosion factor and a development trend as corrosion information of the dangerous chemical storage tank.

[0095] The above design scheme has the beneficial effects that: by processing and evaluating the multi-dimensional corrosion detection data, the corrosion information of the dangerous chemical storage tank is determined, clear disposal basis is provided for the operation and maintenance personnel, the evaluation accuracy is improved, and the subjectivity and errors of manual judgment are greatly reduced.

[0096] Embodiment 5:

[0097] Based on the basis of embodiment 4, the embodiment of the application provides an online corrosion detector for a dangerous chemical storage tank, and the preprocessing unit comprises:

[0098] A data cleaning unit is configured to filter and process the multi-dimensional corrosion detection data to remove noise signals and obtain target denoising detection data.

[0099] A space-time alignment unit is configured to establish a unified time sequence database, interpolate and align the target denoising detection data to a unified timestamp, bind the target denoising detection data with a position based on a digital grid map, perform spatial alignment, and obtain aligned detection data.

[0100] A standardization unit is configured to standardize the aligned detection data based on a preset standard to obtain standard multi-dimensional corrosion detection data.

[0101] ​The beneficial effects of the above design scheme are: by filtering the multi-dimensional corrosion detection data, removing noise signals, obtaining target denoising detection data, the denoised target detection data is closer to the real corrosion state, and the data authenticity is ensured; by establishing a unified time sequence database, the target denoising detection data is interpolated and aligned to a unified timestamp, based on a digital grid map, the target denoising detection data is bound with a position, spatial alignment is performed, aligned detection data is obtained, the problems of data time asynchronization and spatial disassociation are solved, effective fusion of multi-dimensional data is realized, by standardizing the aligned detection data based on a preset standard, standard multi-dimensional corrosion detection data is obtained, parameters with different physical meanings are allowed to participate in model calculation fairly, and source data guarantee is provided for accurate assessment of corrosion of a dangerous chemical storage tank.

[0102] Embodiment 6:

[0103] Based on the basis of embodiment 4, the embodiment of the application provides an online corrosion detector for a dangerous chemical storage tank, the data correlation unit comprises:

[0104] An index determination unit is configured to match the standard multi-dimensional corrosion detection data based on a corrosion index library, select a target corrosion index conforming to the standard multi-dimensional corrosion detection data, and perform index mapping on the standard multi-dimensional corrosion detection data based on the target corrosion index, to obtain target corrosion index features.

[0105] A first construction unit is configured to determine index correlation between the target corrosion indexes based on corrosion principles, correlate the target corrosion index features according to the index correlation, and obtain first construction features.

[0106] A second construction unit is configured to perform numerical correlation statistics on the target corrosion index features based on a nonlinear statistical model, and establish second construction features based on the statistical results.

[0107] A third construction unit is configured to perform time sequence dynamic correlation on the target corrosion index features based on dynamic behavior relationships of the target corrosion index features on a time axis, and obtain third construction features.

[0108] A weight distribution unit is configured to perform weight distribution on the target corrosion index features, the first construction features, the second construction features and the third construction features based on the storage liquid characteristics in the dangerous chemical storage tank and the correlation between the storage liquid characteristics and the standard multi-dimensional corrosion detection data, and obtain weighted weights.

[0109] A vector construction unit is configured to construct an associated feature vector based on the target corrosion index features, the first construction features, the second construction features, the third construction features and corresponding weighted weights.

[0110] In this embodiment, the target corrosion indicators are extracted from the polarization resistance, corrosion current density, corrosion rate, for example: 24-hour sliding average, 1-hour mutation rate, extreme value frequency; from the tank wall thickness data: thickness attenuation rate, local thinning coefficient, thickness fluctuation standard deviation; from the environmental temperature and humidity, tank pressure: temperature and humidity combined index and pressure fluctuation amplitude.

[0111] In this embodiment, the first configuration feature is, for example, the correlation between the 1-hour mutation rate and the temperature, and the hysteresis correlation between the ultrasonic thickness and the electrochemistry.

[0112] In this embodiment, the second configuration feature is, for example, the mutual information between the energy attenuation of the ultrasonic signal and the medium conductivity, and a high mutual information value indicates that the medium characteristics have a significant impact on the ultrasonic detection result, which needs to be considered or compensated in the subsequent model.

[0113] In this embodiment, the third configuration feature is, for example, the comparison of the time series of temperature change and the time series of corrosion rate change.

[0114] In this embodiment, for acid medium storage tanks, the weights of the pH value correlation feature and the electrochemistry-medium temperature correlation feature are increased, and for chloride ion-containing medium storage tanks, the weights of the chloride ion concentration correlation feature and the local thinning coefficient are increased.

[0115] The beneficial effects of the above design scheme are: by matching the target indicators directly related to corrosion from the standardized data based on the preset corrosion indicator library, eliminating redundant parameters, converting the original data into interpretable features through indicator mapping, making each feature correspond to a specific corrosion phenomenon, providing understandable basic units for subsequent correlation analysis, ensuring that the first configuration feature has a clear physical logic by correlating the features based on the corrosion principle, reducing the interference of pseudo-correlation on the subsequent model, capturing the combined effects between factors through nonlinear statistical model correlation, avoiding the one-sidedness of single mechanism analysis, making the correlation features more comprehensively reflect the actual driving factors of corrosion, avoiding misjudgment of short-term fluctuations as long-term trends by correlating the features based on time series dynamics, improving the stability of corrosion state judgment, then dynamically adjusting the weights based on the significant differences in corrosion mechanisms of different storage liquids, realizing the scene focusing of features, and dynamically weighting the feature vector to better fit the specific corrosion scene, improving the recognition accuracy of the subsequent model for the corrosion type, and finally integrating the unified correlation feature vector to improve the information utilization rate of the correlation feature vector. The structured vector can be directly input into the corrosion state analysis model to reduce the model preprocessing burden, and finally improve the accuracy of corrosion grade determination.

[0116] Embodiment 7:

[0117] Based on the basis of embodiment 1, the embodiment of the application provides an online corrosion detector for a dangerous chemical storage tank, the wireless communication module comprises:

[0118] The protocol selection unit is configured to configure a corresponding data transmission protocol based on the corrosion level of the dangerous chemical storage tank.

[0119] The transmission strategy determination unit is configured to determine a data transmission strategy based on the corrosion level of the dangerous chemical storage tank, specifically:

[0120] For a low-risk corrosion level, the initial multi-dimensional corrosion detection data is directly compressed locally, and the compressed data is transmitted at a low transmission frequency.

[0121] For a medium-risk corrosion level, local multi-dimensional corrosion detection data with a correlation greater than a preset correlation with corrosion information is selected, and the local multi-dimensional corrosion detection data is transmitted at a medium transmission frequency.

[0122] For a high-risk corrosion level, full real-time transmission is started, and the initial multi-dimensional corrosion detection data, corrosion information, and positioning information of the online corrosion detector are transmitted at a high transmission frequency.

[0123] The adaptive adjustment unit is configured to monitor the signal quality during data transmission to obtain network delay and packet loss rate, and when the network delay and packet loss rate are greater than 5%, the transmission frequency is automatically reduced, data compression is enabled, and the transmission data is prioritized and transmitted.

[0124] In this embodiment, for low and medium risk corrosion levels, the MQTT-SN protocol is used for transmission to reduce the overhead of data packet headers.

[0125] In this embodiment, for a high-risk corrosion level, the HTTPS protocol is automatically switched to ensure reliable data delivery and meet real-time warning requirements.

[0126] The beneficial effects of the above design scheme are: by letting appropriate protocols serve corresponding risk levels, the transmission reliability and resource utilization are ensured, by using compression and low-frequency transmission for low-risk corrosion levels, resources are maximized, for medium-risk corrosion levels, local key data and medium-frequency transmission are used, focusing on core information, which can accurately reflect the corrosion trend, while reducing the amount of data, avoiding secondary information interference with the decision-making efficiency of the remote center, and for high-risk corrosion levels, full real-time transmission, high-frequency transmission and positioning data are used, providing precise coordinates for explosion-proof robot inspection and emergency shut-off valve linkage, by adaptively adjusting the transmission parameters, network fluctuations are dynamically responded to, and transmission reliability in harsh environments is ensured.

[0127] Embodiment 8:

[0128] Based on the basis of Embodiment 1, the embodiment of the application provides an online corrosion detector for a dangerous chemical storage tank, further comprising: an intelligent power supply module for providing power for normal operation of the online corrosion detector, specifically comprising:

[0129] A battery pack unit containing a lithium battery pack supports wireless charging;

[0130] A battery management unit for real-time detection of power and low power warning;

[0131] A mode selection unit for determining the power supply mode based on the corrosion level.

[0132] In this embodiment, when the corrosion level is low, the energy-saving mode is adopted, when the corrosion level is medium, the normal mode is adopted, and when the corrosion level is high, the high-efficiency mode is adopted.

[0133] The beneficial effects of the above design scheme are: through the safe and convenient charging mode, accurate power control and corrosion level linkage dynamic mode, the three balances of power supply safety, endurance continuity and resource optimization are realized, which not only solves the special pain points of dangerous chemical storage tank area power supply, but also provides reliable power support for the stable operation of the online corrosion detector, which is the key link to ensure uninterrupted corrosion detection and high precision.

[0134] Embodiment 9:

[0135] The application provides an online corrosion detection method for a dangerous chemical storage tank, as shown in Figure 3 , comprising:

[0136] S1: deploying an online corrosion detector at a specified position of the dangerous chemical storage tank;

[0137] S2: performing multi-dimensional corrosion detection on the dangerous chemical storage tank to obtain multi-dimensional corrosion detection data;

[0138] S3: processing and corrosion evaluation of the multi-dimensional corrosion detection data to determine the corrosion information of the dangerous chemical storage tank;

[0139] S4: transmitting the corrosion information of the dangerous chemical storage tank to a remote center in real time.

[0140] In this embodiment, the online corrosion detector is deployed at the lower part of the tank wall, the middle part of the tank body and the center of the tank bottom of the dangerous chemical storage tank, realizing full-coverage and no-dead-angle arrangement.

[0141] In this embodiment, the multi-dimensional corrosion detection includes electrochemical corrosion detection, ultrasonic detection, medium property detection and environmental parameter detection.

[0142] In this embodiment, the corrosion information includes a corrosion level, a corrosion factor, a development trend, etc.

[0143] The beneficial effects of the above design scheme are: through the design of the explosion-proof structure and the heat dissipation structure, the electric spark generated by the operation of the equipment itself is avoided to cause explosion, the sensor drift or circuit failure caused by high temperature is avoided, the continuity and accuracy of the detection data are ensured, through the multi-dimensional corrosion detection of the dangerous chemical storage tank, multi-dimensional corrosion detection data are obtained, the comprehensiveness and accuracy of the detection are improved, through the processing and corrosion evaluation of the multi-dimensional corrosion detection data, the corrosion information of the dangerous chemical storage tank is determined, clear disposal basis is provided for the operation and maintenance personnel, the evaluation accuracy is improved, the subjectivity and error of manual judgment are greatly reduced, through the real-time transmission of the corrosion information of the dangerous chemical storage tank to the remote center, the emergency response time is improved, time for timely maintenance is provided, and the explosion and poisoning risk caused by leakage is avoided.

[0144] Embodiment 10:

[0145] Based on the basis of embodiment 9, the embodiment of the application provides an online corrosion detection method for a dangerous chemical storage tank, in S3, the multi-dimensional corrosion detection data are processed and corrosion evaluated to determine the corrosion information of the dangerous chemical storage tank, comprising:

[0146] The multi-dimensional corrosion detection data are preprocessed to obtain standard multi-dimensional corrosion detection data;

[0147] The standard multi-dimensional corrosion detection data are associated with each other to obtain an associated feature vector;

[0148] The associated feature vector is input into a corrosion state analysis model and a corrosion trend prediction model respectively, and corrosion level, corrosion factor and development trend are output as the corrosion information of the dangerous chemical storage tank.

[0149] The beneficial effects of the above design scheme are: through the processing and corrosion evaluation of the multi-dimensional corrosion detection data, the corrosion information of the dangerous chemical storage tank is determined, clear disposal basis is provided for the operation and maintenance personnel, the evaluation accuracy is improved, and the subjectivity and error of manual judgment are greatly reduced. Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, provided that these modifications and variations of the present application fall within the scope of the present application and its equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An on-line corrosion detector for a hazardous chemical storage tank, characterized by, The application relates to a sealed shell module, a corrosion detection module, a corrosion evaluation module and a wireless communication module. The sealed shell module comprises an explosion-proof structure and a heat dissipation structure, and is used for protecting normal operation of an internal functional module. The corrosion detection module is used for performing multi-dimensional corrosion detection on a dangerous chemical product storage tank to obtain multi-dimensional corrosion detection data. The corrosion evaluation module is used for processing and evaluating the multi-dimensional corrosion detection data to determine corrosion information of the dangerous chemical product storage tank. The preprocessing unit is used for preprocessing the multi-dimensional corrosion detection data to obtain standard multi-dimensional corrosion detection data. The data correlation unit is used for correlating the standard multi-dimensional corrosion detection data with each other to obtain an associated feature vector. The model analysis unit is used for inputting the associated feature vector into a corrosion state analysis model and a corrosion trend prediction model respectively to output corrosion grade, corrosion factors and development trend as the corrosion information of the dangerous chemical product storage tank. The preprocessing unit comprises a data cleaning unit, a space-time alignment unit and a standardization unit. The data cleaning unit is used for filtering the multi-dimensional corrosion detection data to remove noise signals and obtain target denoising detection data. The space-time alignment unit is used for establishing a unified time sequence database, interpolating and aligning the target denoising detection data to a unified time stamp, binding the target denoising detection data with positions based on a digital grid map, performing space alignment to obtain aligned detection data. The standardization unit is used for standardizing the aligned detection data based on a preset standard to obtain standard multi-dimensional corrosion detection data. The data correlation unit comprises an index determination unit, a first construction unit, a second construction unit, a third construction unit, a weight distribution unit and a vector construction unit. The index determination unit is used for matching a corrosion index library with the standard multi-dimensional corrosion detection data, selecting target corrosion indexes conforming to the standard multi-dimensional corrosion detection data, performing index mapping on the standard multi-dimensional corrosion detection data based on the target corrosion indexes to obtain target corrosion index features. The first construction unit is used for determining index correlation between the target corrosion indexes based on corrosion principles, correlating the target corrosion index features according to the index correlation to obtain first construction features. The second construction unit is used for performing numerical correlation statistics on the target corrosion index features based on a nonlinear statistical model, establishing second construction features based on statistical results. The third construction unit is used for performing time sequence dynamic correlation on the target corrosion index features based on dynamic behavior relationships of the target corrosion index features on a time axis to obtain third construction features. The weight distribution unit is used for performing weight distribution on the target corrosion index features, the first construction features, the second construction features and the third construction features based on storage liquid characteristics in the dangerous chemical product storage tank and associativity between the storage liquid characteristics and the standard multi-dimensional corrosion detection data to obtain weighted weights. The vector construction unit is used for constructing the associated feature vector based on the target corrosion index features, the first construction features, the second construction features, the third construction features and corresponding weighted weights. The wireless communication module is used for transmitting the corrosion information of the dangerous chemical product storage tank to a remote center in real time.

2. The on-line corrosion detector for a hazardous chemical storage tank according to claim 1, wherein The sealed shell module comprises an explosion-proof structure unit and a safety chamber. The explosion-proof structure unit comprises an explosion-proof cavity and a safety cavity. The explosion-proof cavity is used for accommodating the corrosion detection module. The safety cavity is used for accommodating the corrosion evaluation module and the wireless communication module. The heat dissipation structure unit is provided with spiral heat dissipation fins outside the sealed shell and graphene heat conduction film attached to the inside, and is used for conducting heat generated by the internal functional module during operation.

3. The on-line corrosion detector for a hazardous chemical storage tank according to claim 1, wherein The corrosion detection module comprises: The electrochemical detection unit is used for collecting the polarization resistance, corrosion current density and corrosion rate of the hazardous chemical storage tank to obtain electrochemical detection data; The ultrasonic detection unit is used for detecting the thickness change of the tank wall of the hazardous chemical storage tank to obtain thickness detection data; The medium characteristic detection unit is used for detecting the internal pH value, chloride ion concentration and temperature of the hazardous chemical storage tank to obtain medium characteristic detection data; The environmental parameter detection unit is used for collecting the environmental temperature, environmental humidity and tank internal pressure of the hazardous chemical storage tank to obtain environmental parameter detection data.

4. The on-line corrosion detector for a hazardous chemical storage tank according to claim 1, wherein The wireless communication module comprises: The protocol selection unit is used for configuring a corresponding data transmission protocol based on the corrosion grade of the hazardous chemical storage tank; The transmission strategy determination unit is used for determining a data transmission strategy based on the corrosion grade of the hazardous chemical storage tank, specifically: For a low-risk corrosion grade, the initial multi-dimensional corrosion detection data is directly compressed locally, and the compressed data is transmitted at a low transmission frequency; For a medium-risk corrosion grade, local multi-dimensional corrosion detection data with a correlation degree greater than a preset correlation with corrosion information is selected, and the local multi-dimensional corrosion detection data is transmitted at a medium transmission frequency; For a high-risk corrosion grade, full real-time transmission is started, and the initial multi-dimensional corrosion detection data, corrosion information and positioning information of the online corrosion detector are transmitted at a high transmission frequency; The adaptive adjustment unit is used for monitoring the signal quality in the data transmission process to obtain network delay and packet loss rate, and when the network delay and packet loss rate are greater than 5%, the transmission frequency is automatically reduced, data compression is enabled, and the transmission data is prioritized and then transmitted; when the network recovers and the packet loss rate is less than 1%, the normal transmission strategy is restored; otherwise, the normal transmission strategy is maintained.

5. The on-line corrosion detector for a hazardous chemical storage tank according to claim 1, wherein Further comprising: The intelligent power supply module is used for providing power for the normal operation of the online corrosion detector, and specifically comprises: The battery pack unit comprises a lithium battery pack and supports wireless charging; The battery management unit is used for real-time detection of power and low-power warning; The mode selection unit is used for determining a power supply mode based on the corrosion grade.

6. An on-line corrosion detection method for a hazardous chemical storage tank, particularly for use in the on-line corrosion detector for a hazardous chemical storage tank according to claim 1, characterized in that, Comprise: S1: deploying the online corrosion detector at a specified position of the hazardous chemical storage tank; S2: performing multi-dimensional corrosion detection on the hazardous chemical storage tank to obtain multi-dimensional corrosion detection data; S3: processing and corrosion evaluation of the multi-dimensional corrosion detection data to determine the corrosion information of the hazardous chemical storage tank; S4: real-time transmission of the corrosion information of the hazardous chemical storage tank to a remote center.

7. The method for online corrosion detection of a hazardous chemical storage tank according to claim 6, wherein, In the S3, the multi-dimensional corrosion detection data is processed and corrosion evaluated to determine the corrosion information of the hazardous chemical storage tank, comprising: The multi-dimensional corrosion detection data is preprocessed to obtain standard multi-dimensional corrosion detection data; The standard multi-dimensional corrosion detection data is correlated with each other to obtain an associated feature vector; The correlation feature vectors are respectively input into a corrosion state analysis model and a corrosion trend prediction model, and corrosion grade, corrosion factors and development trend are output as corrosion information of the hazardous chemical storage tank.

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