Monitoring system and method for isolation state of electric welding fire point and large oil storage tank

Abstract

The invention provides a monitoring system for the isolation state of an electric welding fire point and a large oil storage tank, and the system comprises a resistance collection module which is used for collecting the resistance value of the electric welding fire point and the quality inspection of the large oil storage tank; the current acquisition module is used for acquiring current values of electric welding fire points and oil storage large tank quality inspection; the combustible gas concentration monitoring module is used for monitoring the concentration of combustible gas in the environment; the spectrum analysis module is used for collecting and analyzing spectrum characteristics of the resistance and current signals; the industrial panel is used for receiving data of the resistance acquisition module, the current acquisition module, the combustible gas concentration monitoring module and the spectrum analysis module and displaying and processing the received data; and the energy storage battery is used for providing electric energy for each module and the industrial panel. The invention further provides an operation method of the monitoring system for the isolation state of the electric welding fire point and the large oil storage tank. The problems of single function of monitoring equipment, low manual monitoring efficiency, inaccurate judgment and the like in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial safety monitoring, and specifically provides a monitoring system and method for the isolation state of an electric welding hot spot and an oil storage tank. BACKGROUND

[0002] In the petrochemical and oilfield industries, oil storage tanks are key facilities for storing large amounts of flammable and explosive oil products, and their safe operation is crucial. During long-term use, problems such as aging and cracking that cause oil leakage may occur, and welding is needed to repair or replace them. However, electric welding as a common equipment maintenance and construction method has significant safety hazards in actual operation. During electric welding, the current generated by the welding machine is conducted to the welding piece through the electrode. If the electric welding hot spot and the oil storage tank are not completely isolated, the current may be conducted to the oil storage tank. Since flammable gases can easily accumulate around the tank, the instantaneous electric spark is enough to ignite these flammable gases, causing a violent explosion and fire accident. Once such an accident occurs, it will cause significant casualties to the on-site workers, resulting in damage to the oil storage tank and surrounding equipment and facilities, oil leakage and burning, and other significant property losses, as well as causing irreparable damage to the surrounding ecological environment. Therefore, accurately monitoring whether the electric welding hot spot and the oil storage tank are completely isolated has become a key step in preventing such catastrophic accidents, and is a key technical means to ensure the safety of personnel, the normal operation of equipment and facilities, and the improvement of enterprise safety management.

[0003] Currently, the means for monitoring the isolation of the electric welding hot spot and the oil storage tank on the market mainly have the following problems: the existing monitoring equipment has a single function, and some monitoring equipment mainly monitors the concentration of flammable gases in the environment, cannot determine whether the current generated by the welding operation is effectively isolated from the oil storage tank, and cannot monitor abnormal current conduction caused by improper isolation, which has serious safety vulnerabilities; traditional manual monitoring methods mainly rely on visual inspection, which is inefficient and highly subjective, making it difficult to detect isolation defects in hidden areas and effectively monitor complex current conduction during welding operations; in addition, existing monitoring technologies lack effective anti-interference means, which can easily lead to distorted monitoring data in complex electromagnetic environments, causing false positives or missed detections.

[0004] In summary, due to the above-mentioned deficiencies in existing technology, in scenarios involving a large number of oil storage tanks and frequent welding construction in oilfields, safety hazards are difficult to eliminate, and the risk of accidents is high, so a more reliable and intelligent monitoring system and method is urgently needed. SUMMARY

[0005] The application provides a monitoring system and method for the isolated state of an electric welding fire point and an oil storage tank, to solve the problem of single function of the monitoring device, low efficiency and inaccurate judgment of manual monitoring in the prior art.

[0006] To solve the above problems, the application provides a monitoring system for the isolated state of an electric welding fire point and an oil storage tank, comprising:

[0007] a resistance acquisition module for acquiring the resistance value of the electric welding fire point and the oil storage tank;

[0008] a current acquisition module for acquiring the current value of the electric welding fire point and the oil storage tank;

[0009] a combustible gas concentration monitoring module for monitoring the combustible gas concentration in the environment;

[0010] a spectrum analysis module for acquiring and analyzing the spectrum characteristics of the resistance and current signals;

[0011] an industrial panel for receiving the data of the resistance acquisition module, the current acquisition module, the combustible gas concentration monitoring module and the spectrum analysis module, and displaying and processing the received data;

[0012] an energy storage battery for providing electric energy for the resistance acquisition module, the current acquisition module, the combustible gas concentration monitoring module, the spectrum analysis module and the industrial panel;

[0013] The resistance acquisition module is electrically connected with the industrial panel and the energy storage battery; the current acquisition module is electrically connected with the industrial panel and the energy storage battery; the combustible gas concentration monitoring module is electrically connected with the industrial panel and the energy storage battery; the spectrum analysis module is electrically connected with the energy storage battery, the resistance acquisition module, the current acquisition module and the industrial panel; and the industrial panel is electrically connected with the energy storage battery.

[0014] Further, the application further comprises:

[0015] an alarm control module for receiving the alarm instruction sent by the industrial panel and controlling the alarm to alarm;

[0016] The alarm control module is electrically connected with the industrial panel and the alarm, and the alarm control module and the alarm are electrically connected with the energy storage battery,

[0017] Further, the industrial panel is provided with an intelligent touch screen operation panel, and the intelligent touch screen operation panel is internally provided with WebAccess / HMI software for displaying the data state of each channel to be measured, including resistance, current parameters, combustible gas and spectrum characteristics, and receiving the operation instruction input by the worker.

[0018] Further, the industrial tablet is internally provided with an intelligent monitoring APP; the intelligent monitoring APP is used for receiving data transmitted by the resistance acquisition module, the current acquisition module, the spectrum analysis module and the combustible gas concentration monitoring module, judging the size relationship between the data and a threshold value, then using an AI algorithm to perform deep analysis on the data, generating real-time monitoring results and detailed result analysis reports and sending the real-time monitoring results and the detailed result analysis reports to the intelligent touch screen operation panel and a remote terminal.

[0019] Further, the system further comprises:

[0020] The host box is a hollow cuboid box body, used for installing the resistance acquisition module, the current acquisition module, the alarm control module, the alarm, the energy storage battery, the industrial tablet, the spectrum analysis module and the combustible gas concentration monitoring module.

[0021] Further, the system further comprises:

[0022] The solar panel is electrically connected with the energy storage battery, and is used for cooperating with the energy storage battery to realize a solar charging function.

[0023] Further, the system further comprises:

[0024] The charging power line is used for connecting an external power supply to charge the energy storage battery.

[0025] Further, the energy storage battery is one of a lithium iron phosphate battery, a lead-acid battery, a nickel-hydrogen battery and a lithium polymer battery.

[0026] The application further provides an operation method of the monitoring system for the isolation state of the electric welding fire point and the oil storage tank.

[0027] The connecting lines of the resistance acquisition module are connected with the electric welding fire point and the oil storage tank respectively, so as to acquire resistance data between the electric welding fire point and the oil storage tank in real time;

[0028] The current acquisition module is connected with the oil storage tank through the connecting lines, and the current on the oil storage tank body is monitored in real time;

[0029] The monitoring probe of the combustible gas concentration monitoring module is placed in a monitored area, so as to monitor the combustible gas concentration;

[0030] The trigger parameters of the alarm control module are set in the intelligent touch screen operation panel, including an alarm threshold value and an alarm mode;

[0031] The intelligent monitoring and alarm system for physically isolating the electric welding ignition point from the oil storage tank is started, once the abnormal condition is monitored, the intelligent touch screen operation panel displays warning information, the alarm control module immediately triggers the alarm according to the preset program, and the intelligent monitoring APP sends early warning information to the relevant managers;

[0032] The abnormal condition includes one or more of the resistance being less than a preset alarm threshold, the current being greater than a preset alarm threshold, and the combustible gas concentration exceeding an alarm threshold.

[0033] Further, it further comprises:

[0034] The resistance and current signals are subjected to spectrum analysis by the spectrum analysis module, the useful signals and interference signals are distinguished, the filtering parameters are dynamically adjusted based on the spectrum analysis result by the adaptive filtering algorithm to eliminate electromagnetic interference, and the alarm threshold is dynamically adjusted based on the spectrum analysis result.

[0035] The beneficial effects of the present application are:

[0036] 1. The monitoring accuracy is greatly improved: the traditional device only monitors a single parameter, and the resistance acquisition module, the current acquisition module and the spectrum analysis module are innovatively integrated, the isolation condition between the electric welding ignition point and the oil storage tank can be more comprehensively and accurately reflected through multi-parameter fusion analysis. The resistance acquisition module can sensitively capture the insulation state change between the electric welding ignition point and the oil storage tank, the current acquisition module can monitor the abnormal conduction of the current in real time, the spectrum analysis module can eliminate electromagnetic interference to ensure data accuracy, and the three modules can work together to avoid misjudgment caused by single parameter abnormality. Compared with the prior art, the detection accuracy is significantly improved. The present application can issue a warning at the initial stage of unexpected current conduction (such as when the isolation barrier is slightly damaged but has not caused gas leakage), and can prevent accidents at the initial stage. At the same time, the system not only monitors the electrical isolation state, but also detects the combustible gas concentration, covers all risk links of the electric welding operation, forms a complete risk monitoring chain, effectively reduces the probability of major accidents such as explosion and fire, reduces personnel casualties and property losses, and provides a solid guarantee for the safety production of enterprises.

[0037] 2. Real-time dynamic monitoring and rapid response: the whole process of electric welding operation is dynamically monitored, and each detection module can continuously collect data at a millisecond level, and can capture subtle changes in the isolation state in time. Once the resistance value is abnormal or there is current conduction, the system immediately triggers an audible and visual alarm, and sends early warning information to the relevant managers at the same time. Compared with manual detection, the efficiency is greatly improved, and measures can be taken in time before the accident occurs to reduce the risk of accidents.

[0038] 3. Strengthen the anti-interference performance: by setting the spectrum analysis module, effectively solve the problem of electromagnetic interference in the complex environment of the storage tank area. In the process of electric welding, the strong electromagnetic interference generated by the electric welding machine, the electrical noise of the surrounding equipment and other factors can easily lead to the distortion of the detection data. The spectrum analysis module can accurately identify and filter out the interference signal by real-time analysis of the spectrum characteristics of the collected data and using the adaptive filtering algorithm, so as to ensure the accuracy of the key data such as resistance and current, and to ensure the stable operation of the system in the complex electromagnetic environment, and to improve the reliability of the system.

[0039] 4. Easy to operate and integrate: the intelligent touch screen operation panel is simple and intuitive, and the staff can easily check the data and set the parameters. At the same time, the system can be easily integrated into the existing safety management system, and can be seamlessly connected with the existing monitoring system and management platform of the enterprise through the standard communication protocol (such as Modbus-RTU protocol or Modbus-TCP protocol), so as to realize data sharing and collaborative control, and to provide reliable safety protection for the oil field, petrochemical and other enterprises during electric welding construction, and to improve the overall safety management level of the enterprise.

[0040] 5. Strong environmental adaptability: in terms of energy supply, the rechargeable energy storage battery is adopted, which supports multiple charging modes. By equipping with a 200-watt solar panel, the system can work continuously for more than 10 days in full power state, which solves the power supply problem in the environment without city power supply such as field operation. In terms of protection performance, the key components such as the combustible gas detection module in the system meet the explosion-proof standard and the IP65 or above dustproof and waterproof level, and can stably operate in the extreme temperature environment of-40℃ to +70℃, so as to adapt to the complex and harsh working conditions such as wind, high temperature and high humidity in the petrochemical, oil field exploitation and other industries, and to ensure that the equipment can work reliably in various environments.

[0041] Additional aspects and advantages of the application will be described in the following description, some of which will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0043] Fig. 1 is the schematic diagram of the monitoring system for the isolation state of the electric welding ignition point and the oil storage tank provided by the present application;

[0044] Fig. 2 is the distribution schematic diagram of the internal modules of the monitoring system for the isolation state of the electric welding ignition point and the oil storage tank provided by the present application;

[0045] Fig. 3 is the schematic diagram of the front view of the monitoring system for the isolation state of the electric welding fire point and the oil storage tank provided by the application.

[0046] Reference signs:

[0047] 110, resistance acquisition module; 120, current acquisition module; 130, spectrum analysis module; 140, combustible gas concentration monitoring module; 150, industrial flat plate; 160, alarm control module; 170, alarm; 180, energy storage battery; 190, main box; 191, main box carrying handle. DETAILED DESCRIPTION

[0048] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0049] The technical solutions of the present application will be described below in combination with the embodiments shown in the drawings: Figs. 1-3

[0050] The embodiments of the present application provide a monitoring system for the isolation state of the electric welding fire point and the oil storage tank, as shown in the drawings, which comprises a resistance acquisition module 110, a current acquisition module 120, an alarm control module 160, an alarm 170, an energy storage battery 180, an industrial flat plate 150, a spectrum analysis module 130, a combustible gas concentration monitoring module 140, and each component works cooperatively to realize comprehensive monitoring and intelligent alarm for the isolation state of the electric welding fire point and the oil storage tank. Figs. 1-3

[0051] Among them:

[0052] ​​The resistance acquisition module 110 is electrically connected with the industrial tablet 150 and the energy storage battery 180 respectively, is used for acquiring the resistance values of the electric welding fire point and the oil storage tank for quality inspection, and transmits the acquired resistance values to the industrial tablet 150; the current acquisition module 120 is electrically connected with the industrial tablet 150 and the energy storage battery 180 respectively, is used for acquiring the current values of the electric welding fire point and the oil storage tank for quality inspection, and transmits the acquired current values to the industrial tablet 150; the combustible gas concentration monitoring module 140 is electrically connected with the industrial tablet 150 and the energy storage battery 180 respectively, is used for monitoring the combustible gas concentration in the environment, and transmits the concentration data to the industrial tablet 150; the alarm control module 160 is electrically connected with the industrial tablet 150 and the alarm 170 respectively, and the alarm control module 160 and the alarm 170 are electrically connected with the energy storage battery 180 respectively, the alarm control module 160 is used for receiving the alarm instruction sent by the industrial tablet 150 and controlling the alarm 170 to alarm; the spectrum analysis module 130 is electrically connected with the energy storage battery 180, the resistance acquisition module 110, the current acquisition module 120 and the industrial tablet 150 respectively, is used for acquiring the spectrum characteristics of the resistance and current signals and analyzing, and transmits the analysis result to the industrial tablet 150; the industrial tablet 150 is electrically connected with the energy storage battery 180, is used for processing the received data and sending to the remote terminal.

[0053] In some examples, the resistance acquisition module 110 can adopt 1-100 channel resistance acquisition modules 110 or insulation monitoring instrument devices according to actual needs. In the embodiment, the resistance acquisition module 110 selects an 8-channel resistance module, and the specific model is MZR-T08R. The resistance acquisition module 110 adopts a high-precision 32-bit AD chip and an ARM 32-bit industrial-grade MCU, has the characteristics of high precision and good anti-interference, the measurement range is 0.02Ω-40MΩ, and is widely applicable to various resistance measurement occasions. In the embodiment, the resistance acquisition module 110 connects the electric welding fire point and the oil storage tank through the connecting line with the metal fixed point, is used for measuring the resistance value between the electric welding fire point and the oil storage tank, and judges the isolation state: when the resistance value is lower than the set threshold value, such as 500Ω, it indicates that there may be an isolation failure.

[0054] In some examples, the current acquisition module 120 can be selected according to actual needs, and 1-100 channels of direct current acquisition module 120, 1-100 channels of alternating current acquisition module 120, 1-100 channels of alternating current acquisition module 120, 1-100 channels of alternating current acquisition module 120, 1-100 channels of alternating current acquisition module 120, or 1-100 channels of alternating current acquisition module 120. In the embodiment, a 6-channel alternating current acquisition module 120 is used, and the specific model is MZR-JH06D-34M1. The current acquisition module 120 uses a high-speed isolation device to realize isolation between each channel signal, uses a dedicated 24-bit high-precision true RMS measurement chip, can accurately measure current, voltage, power, cumulative power and other effective value parameters, has the advantages of high precision, good stability and fast sampling speed, and supports standard Modbus-RTU protocol or Modbus-TCP protocol. The current acquisition module 120 is connected to the oil storage tank through a connection line with a metal fixed point. During electric welding and fire work, it is monitored in real time whether there is current on the oil storage tank body. When the current exceeds the safe current (such as greater than 10 mA), it indicates that the current is too large and safety problems may occur.

[0055] In some examples, the combustible gas concentration monitoring module 140 can be selected according to the actual measurement needs of the site. A catalytic combustion type combustible gas monitor can be used, and the specific model is EX2000C. It can monitor methane, propane, hydrogen and other combustible gases. The measurement range is 0-100% lower explosive limit (LEL), and the accuracy is within ±3% FS (full scale). The response time (time to reach 90% response value) is T90, usually ≤30 seconds, ensuring fast early warning. It meets the explosion-proof standard and IP65 or above dustproof and waterproof standard, and is suitable for harsh environments. It supports wired and wireless transmission (such as Bluetooth, WiFi). It can adapt to an environment temperature of -40°C to +70°C.

[0056] In some examples, the industrial tablet 150 is equipped with an intelligent touch screen operation panel, and an intelligent monitoring APP (DHJK-1 type) is installed in the industrial tablet 150. The intelligent touch screen operation panel is internally installed with WebAccess / HMI software for displaying the data state of each channel being measured, including resistance, current parameters, combustible gas and spectral characteristics, and receiving operation instructions input by the staff. The intelligent monitoring APP is used to realize remote monitoring and intelligent analysis functions, can receive data transmitted by the resistance acquisition module 110, the current acquisition module 120, the spectrum analysis module 130 and the combustible gas concentration monitoring module 140, and judge the size relationship between the data and the threshold value, then use AI algorithm to deeply analyze the data, generate real-time monitoring results and detailed result analysis report and send to the intelligent touch screen operation panel and remote terminal, so that the management personnel can remotely master the isolation state and make decisions in time.

[0057] In some examples, the intelligent monitoring APP in the industrial tablet 150 receives and processes data from various measurement modules (resistance acquisition module 110, current acquisition module 120, spectrum analysis module 130, and combustible gas concentration monitoring module 140) in real time. When data anomalies are detected, the intelligent monitoring APP controls the alarm control module 160 to trigger the alarm 170 (in this embodiment, an RS485 interface type alarm control module 160 and alarm 170 are used), at which time the display screen displays red and the alarm 170 is started, and the intelligent monitoring APP can achieve AI intelligent analysis, giving real-time monitoring results and result analysis, so that relevant personnel can take timely measures.

[0058] In some examples, the energy storage battery 180 can be selected from lithium iron phosphate batteries, lead-acid batteries, nickel-hydrogen batteries, lithium polymer batteries, etc. In this embodiment, the energy storage battery 180 is selected from a battery with a lithium iron phosphate cell material, and the specific model is DJIPOWER 1000, with an AC output voltage of 2-420V, an AC output current of 0.1-200A, and an output power of 10-3000W. The battery supports indoor electric charging, in-vehicle electric charging, or solar charging, has a multi-hole plug-in function and a fast charging function, and can be fully charged in 2h, and can be used continuously for more than 10 days on this system. In other examples, according to actual conditions, other types of batteries such as lead-acid batteries, nickel-hydrogen batteries, and lithium polymer batteries can also be selected.

[0059] In some examples, due to the complex metal structure and pipeline network of the storage tank area, as well as electromagnetic interference generated during electric welding work, the measurement accuracy of the system may be affected, leading to false positives or false negatives. Therefore, in the embodiment of the present application, the spectrum analysis module 130 is provided to perform spectrum analysis on resistance and current signals during data testing, effectively avoiding interference and ensuring the accuracy of the monitoring results. Specifically, the spectrum analysis module 130 can analyze the spectral characteristics of resistance and current signals, effectively distinguishing between useful signals and interference signals; based on the spectrum analysis results, adaptive filtering algorithms can be used to dynamically adjust filtering parameters to filter the original signals, eliminating electromagnetic interference and retaining useful signals; based on the spectrum analysis results, the alarm threshold is intelligently adjusted: if the interference is strong, the threshold is appropriately increased, and if the signal is clear, the threshold can be appropriately reduced; in addition, the spectrum display function is added to the intelligent touch screen operation panel, allowing workers to visually see the spectral characteristics of the signal, facilitating the judgment of the working state and potential problems of the system, so that timely measures can be taken for adjustment.

[0060] In some examples, the host box 190 is also included, which is a hollow cuboid-shaped box body for mounting the resistance acquisition module 110, the current acquisition module 120, the alarm control module 160, the alarm 170, the energy storage battery 180, the industrial flat plate 150, the spectrum analysis module 130 and the combustible gas concentration monitoring module 140, and the host box 190 plays a protection and fixing role.

[0061] In some examples, the industrial flat plate 150 is embedded on the front of the host box 190 and is a long rectangle, which is an intuitive interaction interface for displaying data and operation; the host box 190 is provided with heat dissipation and ventilation holes on the side, which are arranged in a grid shape to ensure internal heat dissipation and ventilation; the host box 190 is provided with a host box handle 191 on the top, which is an arc-shaped handle to facilitate the movement of the host box 190; the alarm 170 is installed on the top front end of the host box 190 and emits sound and light when triggered.

[0062] In some examples, the spectrum analysis module 130, the resistance acquisition module 110 and the current acquisition module 120 are arranged in the upper horizontal area of the host box 190: the three are installed horizontally and side by side, located near the rear of the industrial flat plate 150, connected to the external electric welding equipment through a line to collect electric signal data. The combustible gas concentration monitoring module 140 is independently installed in the lower part of the inside of the host box 190, and the monitoring probe extends out of the box (towards the monitoring area) through an extension line and is responsible for gas concentration monitoring.

[0063] In some examples, the energy storage battery 180 is fixed at the bottom of the host box 190 and is in the form of a long cuboid battery pack, which is connected to each power module through a power line to ensure power supply.

[0064] In some examples, the alarm control module 160 is located at the central position (between the upper part and the lower part) of the inside of the host box 190 and is connected to the alarm module.

[0065] Each module is fixed to the host box 190 by screws, and the line is hidden in the internal wire slot to ensure compact structure and functional cooperation, which is suitable for the intelligent monitoring scene of the electric welding fire point-oil storage tank isolation area.

[0066] In some examples, a charging power line is also included for connecting an external power source to charge the energy storage battery 180.

[0067] In some examples, a solar panel is also included for cooperating with the energy storage battery 180 to realize solar charging function and provide sustainable energy supply for the system in a power-free environment such as the field.

[0068] The embodiment of the present application also provides an operation method of a monitoring system for the electric welding fire point and the oil storage tank isolation state, which comprises the following steps:

[0069] The connection line of the resistance acquisition module 110 is connected to the electric welding ignition point and the oil storage tank respectively to acquire the resistance data between the two in real time.

[0070] The current acquisition module 120 is connected to the oil storage tank through the connection line to monitor the current on the oil storage tank in real time and transmit the acquired current data to the industrial tablet 150.

[0071] The monitoring probe of the combustible gas concentration monitoring module is placed in the monitored area to monitor the combustible gas concentration and transmit the monitored combustible gas concentration data to the industrial tablet 150.

[0072] The trigger parameters of the alarm control module 160 are set in the intelligent touch screen operation panel, including the alarm threshold (such as the resistance threshold, the current threshold), the alarm mode (such as the sound and light alarm, the APP push).

[0073] The intelligent monitoring and alarm system for the physical isolation of the electric welding ignition point and the oil storage tank is started, the industrial tablet 150 receives and processes the data from the resistance acquisition module 110, the current acquisition module 120, the spectrum analysis module 130 and the combustible gas concentration monitoring module 140 in real time, and displays the data through the intelligent touch screen operation panel. Once the resistance value is lower than the preset threshold or there is abnormal current, or the combustible gas concentration exceeds the standard, the intelligent touch screen operation panel displays the red warning information, the alarm control module 160 immediately triggers the alarm 170 according to the preset program, starts the buzzer and the alarm light, and the intelligent monitoring APP sends the warning information to the relevant managers, realizing the process of data autonomous acquisition and alarm.

[0074] In some examples, the intelligent touch screen operation panel displays the resistance value, the current value, the signal spectrum characteristics and other data in real time, and the intelligent monitoring APP analyzes the monitoring data in depth and generates a report.

[0075] In some examples, the historical data can be viewed through the intelligent monitoring APP, and the initial alarm threshold can be set based on the current operation scene.

[0076] In other examples, to further improve the accuracy of the alarm threshold, the resistance and current signals can be analyzed by the spectrum analysis module 130 to distinguish useful signals and interference signals, the filter parameters can be dynamically adjusted by the adaptive filtering algorithm based on the spectrum analysis results to eliminate electromagnetic interference, and the alarm threshold can be adjusted based on the spectrum analysis results.

[0077] Embodiment 1: Oilfield storage tank electric welding operation isolation state monitoring.

[0078] When electric welding operation is performed in the storage tank area of an oilfield, the intelligent monitoring and alarm system of the present application is used for isolation state monitoring.

[0079] 1. System installation deployment: firmly connect the connection lines of the resistance acquisition module 110 to the metal parts of the welding ignition point and the oil storage tank, respectively, to ensure tight connection and accurate resistance measurement; the current acquisition module 120 is connected to the grounding line of the oil storage tank body through a dedicated metal connection line; the alarm control module 160, the alarm 170, the frequency spectrum analysis module 130, and other components are installed in the main box 190 according to the connection relationship, and the line connection with the energy storage battery 180, the intelligent touch screen operation panel, etc. is completed; place the 200-watt foldable solar panel in the appropriate position, then connect it with the energy storage battery 180 through the wire, and ensure the system energy supply.

[0080] 2. Parameter setting: enter the system setting interface through the intelligent touch screen operation panel, set the resistance threshold to 500 ohms, and set the current safety value to 10 mA; initialize the related parameters of the frequency spectrum analysis module 130, such as selecting the appropriate filtering algorithm, setting the initial alarm threshold adjustment coefficient, etc.; at the same time, set the alarm mode in the alarm control module 160 as audible and visual alarm and smart monitoring APP push, and specify the list of managers and contact methods receiving early warning information.

[0081] 3. Operation monitoring and alarm: during the welding operation, the resistance acquisition module 110 collects the resistance value between the welding ignition point and the oil storage tank in real time, and transmits the data to the intelligent touch screen operation panel; the current acquisition module 120 synchronously monitors the current on the oil storage tank body, and also transmits the data in real time. During the monitoring process, the resistance value suddenly drops to 480 ohms, and the intelligent touch screen operation panel immediately triggers the alarm control module 160. The alarm control module 160 starts the alarm 170, the screen on the main box 190 displays red warning information, and the buzzer emits an alarm sound; at the same time, the intelligent touch screen operation panel transmits the alarm information to the smart monitoring APP, which notifies the relevant managers through message push, SMS, etc. The frequency spectrum analysis module 130 performs real-time frequency spectrum analysis on the resistance and current signals throughout the process, and no obvious interference signal is monitored, ensuring the accuracy of the alarm. After receiving the alarm information, the manager quickly arranges the operating personnel to check and repair the isolation measures. After the check and repair are completed, the welding operation process continues. The current acquisition module 120 monitors that there is no current signal, indicating that the isolation measures are intact, and this operation avoids the occurrence of safety accidents.

[0082] Example 2: Isolation monitoring of complex pipe network area welding operation.

[0083] In the complex pipe network and oil storage tank staggered area of a large petrochemical enterprise, welding maintenance operation is carried out. Due to the dense metal pipe network and numerous equipment in this area, the electromagnetic environment is extremely complex, which puts higher requirements on the anti-interference ability and precision of the monitoring system.

[0084] 1. System reinforcement deployment: According to the characteristics of the region, 10-channel resistance acquisition module 110 and 10-channel alternating current, direct current, and voltage combination acquisition module are used to monitor multiple electric welding fire points, key nodes of oil storage tanks, and pipe network connection parts, achieving comprehensive monitoring. To cope with strong electromagnetic interference, each module is electromagnetically shielded inside the main box 190, and the hardware configuration of the spectrum analysis module 130 is optimized to enhance its signal processing capability.

[0085] 2. Dynamic interference response: At the beginning of the operation, the spectrum analysis module 130 immediately detects a large number of broadband electromagnetic interference signals from surrounding equipment, with a frequency range of 10kHz-500kHz. The spectrum analysis module 130 quickly starts a deep adaptive filtering algorithm and combines historical interference data models to accurately suppress the interference frequency band. At the same time, according to the interference intensity, the alarm threshold is dynamically adjusted (the resistance threshold is temporarily increased to 800 ohms, and the current safety value is increased to 15mA) to avoid false alarms. During the operation, the spectrum analysis module 130 continuously monitors the signal spectrum changes in real time, updating the filtering parameters every 100ms to ensure the reliability of the monitoring data.

[0086] 3. Accurate capture of hidden dangers: When the electric welding operation reaches the 3rd hour, the resistance acquisition module 110 near a fire point monitors the resistance value from a stable 2MΩ to 600Ω, and the corresponding current acquisition module 120 monitors the abnormal current (8mA). Although this data has not reached the conventional alarm threshold, the spectrum analysis module 130 finds that this change is accompanied by specific frequency current fluctuation characteristics through continuous analysis of the signal, with a matching degree of 92% with the signal pattern when isolation fails. Based on this, the system determines that there is a potential isolation risk and immediately triggers a warning. The alarm control module 160 starts a hierarchical warning mechanism, first prompting the on-site operator to pause operation with a soft sound and light, and then sending detailed data and risk analysis report to the intelligent monitoring APP. The safety management personnel further analyze the risk through the intelligent monitoring APP and issue comprehensive inspection instructions after confirming the risk.

[0087] 4. Multi-dimensional verification and processing: After receiving the warning, the operator uses the intelligent touch screen operation panel to view the resistance, current historical change curve, and real-time spectrum graph of the point, and cross- verifies with other adjacent monitoring point data. At the same time, the intelligent monitoring APP calls the risk case data of past operations in this area to generate a similar risk processing scheme for reference. After on-site inspection, a hidden metal pipeline is found to have accidentally connected to the oil storage tank, and timely isolation and repair are performed to successfully avoid the accident. After the incident, the system incorporates this data into the learning sample to further optimize the monitoring model and alarm strategy in complex electromagnetic environments.

[0088] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; and although the present application has been described in detail with reference to the foregoing embodiments, it should be appreciated by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A monitoring system for the isolation status between an electric welding ignition point and a large oil storage tank, characterized in that, include: The resistance acquisition module (110) is used to acquire the resistance values ​​of the welding ignition point and the oil storage tank during quality inspection. The current acquisition module (120) is used to acquire the current value of the welding ignition point and the quality inspection of the oil storage tank; Combustible gas concentration detection module (140) is used to detect the concentration of combustible gas in the environment; The spectrum analysis module (130) is used to acquire and analyze the spectral characteristics of resistance and current signals; An industrial flat panel (150) is used to receive data from the resistance acquisition module (110), the current acquisition module (120), the combustible gas concentration detection module (140), and the spectrum analysis module (130), and to display and process the received data. Energy storage battery (180) is used to provide power to the resistance acquisition module (110), the current acquisition module (120), the combustible gas concentration detection module (140), the spectrum analysis module (130), and the industrial flat panel (150); The resistance acquisition module (110) is electrically connected to the industrial plate (150) and the energy storage battery (180) respectively; the current acquisition module (120) is electrically connected to the industrial plate (150) and the energy storage battery (180) respectively; the combustible gas concentration detection module (140) is electrically connected to the industrial plate (150) and the energy storage battery (180) respectively; the spectrum analysis module (130) is electrically connected to the energy storage battery (180), the resistance acquisition module (110), the current acquisition module (120), and the industrial plate (150) respectively; the industrial plate (150) is electrically connected to the energy storage battery (180).

2. The monitoring system for the isolation status between the welding ignition point and the oil storage tank according to claim 1, characterized in that, Also includes: The alarm control module (160) is used to receive alarm commands sent by the industrial flat panel (150) and control the alarm (170) to sound an alarm. The alarm control module (160) is electrically connected to the industrial flat panel (150) and the alarm (170), and the alarm control module (160) and the alarm (170) are electrically connected to the energy storage battery (180).

3. The monitoring system for the isolation status between the welding ignition point and the oil storage tank according to claim 1 or 2, characterized in that: The industrial tablet (150) is equipped with an intelligent touch screen operation panel. The intelligent touch screen operation panel is equipped with WebAccess / HMI software, which is used to display the data status of each channel under test, including information such as resistance, current parameters, combustible gas and spectrum characteristics, and to receive operation commands input by the staff.

4. The monitoring system for the isolation status between the welding ignition point and the oil storage tank according to claim 3, characterized in that: The industrial tablet (150) is equipped with an intelligent monitoring APP. The intelligent monitoring APP is used to receive data transmitted by the resistance acquisition module (110), the current acquisition module (120), the spectrum analysis module (130) and the combustible gas concentration detection module (140), and to determine the relationship between the data and the threshold. Then, it uses AI algorithms to perform in-depth analysis of the data, generate real-time monitoring results and detailed result analysis reports, and send them to the intelligent touch screen operation panel and remote terminal.

5. The monitoring system for the isolation status between the welding ignition point and the oil storage tank according to claim 4, characterized in that, Also includes: The main unit (190) is a hollow rectangular box used to install the resistance acquisition module (110), the current acquisition module (120), the alarm control module (160), the alarm (170), the energy storage battery (180), the industrial flat panel (150), the spectrum analysis module (130), and the combustible gas concentration detection module (140).

6. The monitoring system for the isolation status between the welding ignition point and the oil storage tank according to claim 5, characterized in that, Also includes: A solar panel is electrically connected to an energy storage battery (180). The solar panel is used in conjunction with the energy storage battery (180) to realize the solar charging function.

7. The monitoring system for the isolation status between the welding ignition point and the oil storage tank according to claim 5, characterized in that, Also includes: A charging power cord is used to connect an external power source to charge the energy storage battery (180).

8. The monitoring system for the isolation status between the welding ignition point and the oil storage tank according to claim 1, characterized in that, The energy storage battery (180) is one of lithium iron phosphate battery, lead-acid battery, nickel-metal hydride battery, or lithium polymer battery.

9. An operating method for a monitoring system for the isolation status of an electric welding ignition point and an oil storage tank as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Connect the resistance acquisition module (110) to the welding ignition point and the oil storage tank respectively to collect the resistance data between the two in real time. The current acquisition module (120) is connected to the oil storage tank via a connecting cable, and the current on the tank body is monitored in real time. A probe for detecting the modulus of combustible gas concentration is placed in the area to be monitored in order to monitor the concentration of combustible gas. The trigger parameters of the alarm control module (160) are set in the intelligent touch screen operation panel, including the alarm threshold and alarm mode; The digital monitoring and alarm system for physical isolation between the welding ignition point and the oil storage tank is activated. Once an abnormality is detected, the intelligent touch screen operation panel displays warning information, the alarm control module (160) immediately triggers the alarm (170) according to the preset program, and the intelligent monitoring APP sends a warning message to the relevant management personnel. The abnormal conditions include one or more of the following: resistance is less than the preset alarm threshold, current is greater than the preset alarm threshold, and combustible gas concentration exceeds the alarm threshold.

10. The operation method of the monitoring system for the isolation status between the welding ignition point and the oil storage tank according to claim 9, characterized in that, Also includes: The spectrum analysis module (130) performs spectrum analysis on the resistance and current signals to distinguish between useful signals and interference signals. Based on the spectrum analysis results, the filter parameters are dynamically adjusted through an adaptive filtering algorithm to eliminate electromagnetic interference. The alarm threshold is also dynamically adjusted based on the spectrum analysis results.

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