Detection device and method for circulating pipeline in all-vanadium redox flow battery and monitoring host

Abstract

This invention relates to the field of battery monitoring, specifically to a detection device, method, and monitoring host for the circulation pipeline in a vanadium redox flow battery. In this application, embodiments use first detection components at both ends of the circulation pipeline to collect electrolyte operating parameters in real time, accurately acquiring temperature data and solving the problem of missing temperature monitoring, providing a reliable basis for regulation. Secondly, the operating parameter signals are transmitted to the monitoring host in real time, allowing the host to flexibly execute regulatory operations, replacing the existing single adjustment method and achieving precise control of electrolyte temperature, ensuring battery efficiency and lifespan. Then, a second detection component around the circulation pipeline can monitor leakage status in real time, completely solving the problem of delayed leakage detection compared to manual inspections. Finally, upon receiving a leakage signal, the monitoring host synchronously executes regulatory operations, enabling timely handling of leaks and avoiding losses such as equipment corrosion and resource waste. This ensures pipeline operation from both temperature and leakage perspectives, improving battery operational stability.

Description

Technical Field

[0001] This invention relates to the field of battery monitoring, specifically to a detection device, method, and monitoring host for the circulation pipeline in a vanadium redox flow battery. Background Technology

[0002] Vanadium redox flow batteries, with their advantages of large capacity, long cycle life, and high safety, have become an important technological direction in the field of large-scale energy storage. As the core carrier for electrolyte transfer in the battery system, the operating status of the circulation pipeline directly affects the battery's charge-discharge efficiency and lifespan. However, in the existing vanadium redox flow battery operation and monitoring system, the monitoring and control of the circulation pipeline has obvious technical shortcomings: On the one hand, there is insufficient monitoring of the operating status of the electrolyte in the circulation pipeline. There is a lack of real-time and accurate acquisition methods for electrolyte temperature in the pipeline, making it impossible to detect abnormal fluctuations in electrolyte temperature in time. Consequently, it is impossible to intervene in temperature in a timely manner, which can easily lead to the electrolyte temperature exceeding the reasonable range, reducing the reactivity of vanadium ions, affecting the battery's charge-discharge efficiency, and accelerating electrolyte deterioration, thus shortening the battery's lifespan. On the other hand, the monitoring of pipeline leakage mostly relies on manual inspection or passive monitoring of the leakage base plate. This not only has obvious time lag, making it impossible to detect leakage at the first moment, but also makes it impossible to take corresponding actions simultaneously after leakage is detected. The leaked corrosive electrolyte will continue to corrode surrounding equipment, causing waste of vanadium resources, and even causing safety accidents.

[0003] On the other hand, existing technologies have relatively simple methods for regulating electrolyte temperature, typically only capable of performing a single heating or cooling operation. They cannot flexibly match the regulation strategy according to the actual range and trend of electrolyte temperature changes, making it difficult to achieve precise control of electrolyte temperature and maintain the electrolyte in a stable and optimal reaction state. This further limits the performance and lifespan extension of vanadium redox flow batteries. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide a detection device, method and monitoring host for the circulation pipeline in a vanadium redox flow battery, to solve the problems of the lack of accurate real-time monitoring and flexible adjustment of electrolyte temperature in the circulation pipeline of a vanadium redox flow battery, and the lag in leakage monitoring and the inability to handle leakage synchronously, which affect battery performance and service life and easily cause losses.

[0005] In a first aspect, embodiments of the present invention provide a detection device for a circulation pipeline in a vanadium redox flow battery, characterized in that the detection device comprises: a monitoring host, a first detection component disposed at both ends of the circulation pipeline, and a second detection component disposed around the circulation pipeline; the first detection component and the second detection component are respectively electrically connected to the monitoring host;

[0006] The first detection component is used to detect the operating parameters of the electrolyte at both ends of the circulation pipeline and send the corresponding operating parameter signals to the monitoring host. The second detection component is used to detect the leakage status of the circulation pipeline and send a corresponding leakage status signal to the monitoring host. The monitoring host is used to perform corresponding control operations based on the operating condition parameter signals and the leakage status signals.

[0007] Furthermore, the first detection component includes: a first temperature sensor and a first flow sensor disposed at the input end of the circulation pipe, and a second temperature sensor and a second flow sensor disposed at the output end of the circulation pipe.

[0008] Furthermore, the second detection component includes a linear leak sensor spirally wound around the circulation pipe.

[0009] Furthermore, the monitoring host is also electrically connected to the circulation pump of the circulation pipeline; The monitoring host is used to send a control command to the circulation pump to stop the circulation pump when the difference in electrolyte flow rate at both ends of the circulation pipeline is greater than a preset difference based on the operating condition parameter signal, and / or the circulation pipeline is found to be leaking based on the leakage status signal.

[0010] Furthermore, a recovery tank, a liquid pump, and a recovery container are provided on the outside of the circulation pipeline. The recovery tank is connected to the input end of the liquid pump through a pipeline, and the output end of the liquid pump is connected to the recovery container. A liquid level sensor is provided in the recovery tank, and the liquid level sensor is electrically connected to the monitoring host. The liquid level sensor is used to detect the leakage liquid level data in the recovery tank in real time and send the corresponding liquid level signal of the leakage liquid level data to the monitoring host. The monitoring host is used to send a start command to the pump when it is determined from the liquid level signal that the leakage liquid level in the recovery tank is higher than a preset threshold. The pump is used to pump the leaked liquid from the recovery tank to the recovery vessel according to the start command.

[0011] Furthermore, heating components are also installed around the circulating pipe; The monitoring host is used to send a heating command to the heating component when the temperature of the electrolyte at both ends of the circulation pipeline is lower than a preset temperature range based on the operating condition parameter signal. The heating component is used to heat the electrolyte according to the heating command, so that the temperature of the electrolyte rises back to the preset temperature range.

[0012] Secondly, embodiments of the present invention provide a method for detecting the circulation pipeline in a vanadium redox flow battery, characterized in that the method is applied to a monitoring host, and the method further includes: The system acquires in real time the operating condition parameter signals sent by the first detection component located at both ends of the circulation pipeline, and the leakage status signals sent by the second detection component located around the circulation pipeline. Perform corresponding control operations based on the operating condition parameter signals and the leakage status signals.

[0013] Furthermore, the method also includes: Acquire historical leakage status signals and determine the number of leaks at each leakage location in the circulation pipeline based on the historical leakage status signals; The locations of leaks are prioritized according to the number of leaks, from highest to lowest, to obtain a priority sequence. The sampling frequency is assigned to the corresponding second detection component according to the order of the leakage location in the priority sequence, and the airtightness detection of the leakage location is automatically triggered during the idle period.

[0014] Furthermore, the method also includes: Acquire real-time pressure data at the bends and interfaces of the circulation pipe; Analyze the real-time pressure data to determine whether there is abnormal vibration in the bent section and the interface section; If abnormal vibration is present, the risk level of pipe cracking is predicted based on the real-time pressure data, historical vibration data, and pipe material data of the bent section and the interface section. If the risk level is greater than the preset level, a speed reduction command is sent to the circulating pump, the sampling frequency of the second detection component is increased, and a maintenance reminder is pushed to the user.

[0015] Thirdly, embodiments of the present invention provide a monitoring host, including: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the method described in the first aspect or any corresponding embodiment thereof.

[0016] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing computer instructions that cause a computer to perform the method described in the first aspect or any of its corresponding embodiments.

[0017] This embodiment of the application collects electrolyte operating parameters in real time through the first detection components at both ends of the circulation pipeline, which can accurately obtain temperature data, solving the problem of missing temperature monitoring and providing a reliable basis for regulation. Secondly, the operating parameter signals are transmitted to the monitoring host in real time, and the host can flexibly execute regulation operations based on them, replacing the existing single adjustment method, realizing precise control of electrolyte temperature, and ensuring battery efficiency and life. Then, the second detection component around the circulation pipeline can monitor the leakage status in real time, which completely solves the problem of leakage detection lag compared with manual inspection and other methods. Finally, after receiving the leakage signal, the monitoring host executes regulation operations synchronously, which can promptly deal with leakage and avoid losses such as equipment corrosion and resource waste. It protects pipeline operation from both temperature and leakage aspects and improves battery operation stability. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a detection device for the circulation pipeline in a vanadium redox flow battery according to some embodiments of the present invention; Figure 2 This is a complete schematic diagram of a detection device for the circulation pipeline in a vanadium redox flow battery according to some embodiments of the present invention; Figure 3 This is a detailed schematic diagram of a detection device for the circulation pipeline in a vanadium redox flow battery according to some embodiments of the present invention; Figure 4 This is a schematic flowchart of a method for detecting the circulation pipeline in a vanadium redox flow battery according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the hardware structure of the monitoring host according to an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] According to embodiments of the present invention, a detection device, method, and monitoring host for the circulation pipeline in a vanadium redox flow battery are provided. It should be noted that the steps shown in the flowcharts in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0022] This embodiment provides a detection device for the circulation pipeline in a vanadium redox flow battery. Figure 1 This is a schematic diagram of a detection device for the circulation pipeline in a vanadium redox flow battery according to an embodiment of the present invention, as shown below. Figure 1 As shown, the detection device includes: a monitoring host 101, a first detection component 102 disposed at both ends of the circulation pipe 104, and a second detection component 103 disposed around the circulation pipe 104; the first detection component 102 and the second detection component 103 are respectively electrically connected to the monitoring host 101. The first detection component 102 is used to detect the operating parameters of the electrolyte at both ends of the circulation pipeline 104 and send the corresponding operating parameter signals to the monitoring host 101. The second detection component 103 is used to detect the leakage status of the circulation pipeline 104 and send a corresponding leakage status signal to the monitoring host 101. The monitoring host 101 is used to perform corresponding control operations based on the operating condition parameter signals and leakage status signals.

[0023] Understandably, the first detection component 102 is fixed to the electrolyte inlet and outlet of the circulation pipe 104 respectively, ensuring that the built-in temperature and flow sensors can directly contact the electrolyte in the pipe; then the second detection component 103 is installed on the outer wall of the circulation pipe 104 in a spiral winding manner, focusing on covering the pipe bends, joints and other places where leakage is likely to occur. After that, the signal output ends of the first detection component 102 and the second detection component 103 are electrically connected to the signal receiving end of the monitoring host 101 respectively, thus opening the data transmission path.

[0024] When the vanadium redox flow battery enters the operating state and the electrolyte begins to flow in the circulation pipe 104, the device will simultaneously start the monitoring process: the first detection component 102 will continuously collect the temperature and flow data of the electrolyte at both ends of the pipe. These data will be converted into standardized operating condition parameter signals by the component and transmitted to the monitoring host 101 in real time; at the same time, the second detection component 103 will continuously monitor its own resistance value. Once the circulation pipe 104 is damaged and the leaked electrolyte comes into contact with the sensing circuit of the second detection component 103, it will cause a change in resistance, and the component will generate a leakage status signal and send it to the monitoring host 101.

[0025] After receiving two types of signals, the monitoring host 101 analyzes the data: If it is an operating parameter signal, the host will compare the collected temperature and flow data with the preset optimal operating parameter range of the vanadium redox flow battery. If the temperature is found to be too low, it will send a heating command to the heating component connected to the pipeline; if the temperature is too high, it will send a command to accelerate the circulation of the circulating pump; if there is an abnormal difference in flow rate, it will adjust the speed of the circulating pump. If it is a leakage status signal, the monitoring host 101 will first verify the signal to rule out the possibility of sensor false triggering. After confirming leakage, it will send a shutdown command to the circulating pump and trigger the external alarm device at the same time to prevent the leaked electrolyte from corroding the equipment or causing pollution.

[0026] refer to Figure 2 In the diagram, the two sides of the battery stack are connected to two electrolyte storage tanks through circulation pipelines. Each storage tank is equipped with a circulation pump at its outlet to drive the electrolyte to circulate between the storage tank and the battery stack. The "power supply-load" connected to the battery stack is the energy interaction terminal for battery charging and discharging.

[0027] Meanwhile, temperature monitoring sensors and flow monitoring sensors are installed on the inlet and outlet circulation pipelines of the two electrolyte storage tanks. The signals from these sensors are collected by the monitoring host below. Combined with the operating status of the circulation pump, the key parameters such as electrolyte temperature and flow rate are collected in real time. As the control core, the monitoring host can adjust the circulation pump speed and stack operating status based on this data to ensure the stable and efficient operation of the battery system.

[0028] In this embodiment of the application, the first detection component 102 includes: a first temperature sensor 1021 and a first flow sensor 1022 disposed at the input end of the circulation pipe 104, and a second temperature sensor 1023 and a second flow sensor 1024 disposed at the output end of the circulation pipe 104.

[0029] Understandable, such as Figure 3 As shown, a set of temperature sensors and a set of flow sensors are respectively deployed at the electrolyte input and output ends of the circulation pipeline 104, which together form the first detection component 102 to monitor the operating status of the electrolyte in the pipeline.

[0030] The layout of this embodiment enables end-to-end monitoring of the electrolyte's operating status. The first temperature sensor 1021 and the first flow sensor 1022 at the input end can collect temperature and flow data of the electrolyte in the initial state of entering the circulation pipeline. The second temperature sensor 1023 and the second flow sensor 1024 at the output end can collect temperature and flow data of the electrolyte after completing one cycle. By comparing the two sets of data, the state changes of the electrolyte during the circulation process can be more accurately determined. It can also locate the interval where anomalies occur. If there is an abnormal difference in the flow data at the input and output ends, it can be determined whether there is a leak in the pipeline or a problem with the operation of the circulation pump. If there is an abnormal difference in the temperature data, it can be determined whether there is a change in the reaction state of the fuel cell stack or a problem with the insulation structure of the pipeline, which facilitates rapid troubleshooting.

[0031] In this embodiment, the second detection component 103 includes a linear leakage sensor 1031 spirally surrounding the circulation pipe 104.

[0032] Understandably, the linear leakage sensor 1031 is installed on the outer wall of the circulation pipe 104 in a spiral winding manner to complete the monitoring of pipe leakage.

[0033] The linear spiral layout adopted in this embodiment is to achieve comprehensive monitoring. The spiral installation allows the linear leak sensor 1031 to fit the outer wall of the circulation pipe 104 to the maximum extent, covering most of the pipe area, especially the bends and joints where leaks are prone to occur, eliminating blind spots. Secondly, it ensures timely monitoring. The linear leak sensor triggers a signal by changing its resistance upon contact with leaking liquid. This detection method has a fast response speed; as soon as electrolyte leaks come into contact with the sensor, a signal is generated, avoiding the lag of manual inspection. Finally, it has strong adaptability. The linear structure can flexibly adapt to circulation pipes of different diameters. During installation, the density of the spiral can be adjusted according to the actual length of the pipe. At the same time, this installation method will not interfere with the normal operation of the pipe or affect the circulation of electrolyte.

[0034] In the embodiments of this application, such as Figure 1 As shown, the monitoring host 101 is also electrically connected to the circulation pump 105 of the circulation pipeline 104; the monitoring host 101 is used to send a control command to the circulation pump 105 to stop the circulation pump 105 when the difference between the electrolyte flow rates at both ends of the circulation pipeline 104 is greater than a preset difference based on the operating condition parameter signal, and / or the circulation pipeline 104 is found to be leaking based on the leakage status signal.

[0035] Understandably, the monitoring host 101 will continuously integrate the flow condition signal of the first detection component and the leakage status signal of the second detection component. When the flow difference of the electrolyte at both ends of the pipeline exceeds the preset value (indicating that there may be leakage or blockage in the pipeline, or abnormal operation of the circulation pump itself), or when a pipeline leakage is clearly detected, it will directly send a shutdown command to the circulation pump 105 to terminate the circulation of the electrolyte.

[0036] The embodiments of this application can achieve immediate damage control in the event of a fault. The electrolyte in a vanadium redox flow battery is corrosive, and the continuous operation of the circulation pump will cause the problems of leakage and abnormal flow to continue to worsen. For example, continuing to circulate when there is leakage will accelerate the leakage of electrolyte, and continuing to operate when the flow is abnormal may aggravate the blockage of the pipeline. The monitoring host can directly control the shutdown and cut off the source of risk at the first time. At the same time, it reduces the problem of labor costs and response lag. There is no need for manual troubleshooting and judgment before operation. The whole process is completed automatically by the monitoring host.

[0037] In this embodiment, a recovery tank, a pump, and a recovery container are provided on the outside of the circulation pipeline 104. The recovery tank is connected to the input end of the pump via a pipeline, and the output end of the pump is connected to the recovery container. A liquid level sensor is provided in the recovery tank, and the liquid level sensor is electrically connected to the monitoring host 101. The liquid level sensor is used to detect the leakage liquid level data in the recovery tank in real time and send the corresponding liquid level signal to the monitoring host 101. The monitoring host 101 is used to send a start command to the pump when it is determined from the liquid level signal that the leakage liquid level data in the recovery tank is higher than a preset threshold. The pump is used to pump the leakage liquid from the recovery tank to the recovery container according to the start command.

[0038] Understandably, a recovery tank is installed on the outer wall of the circulation pipeline to collect the leaked electrolyte. The recovery tank, together with a pump and a recovery container, forms a recovery path. At the same time, a liquid level sensor is installed in the recovery tank and connected to the monitoring host 101. The liquid level sensor will continuously monitor the accumulation of leaked liquid in the recovery tank. When the monitoring host 101 determines that the liquid level in the recovery tank exceeds a preset threshold, it will start the pump to pump the leaked liquid in the recovery tank to the recovery container for storage.

[0039] This application implements a closed-loop system for handling leaks. Building upon previous stop-and-loss measures, it adds a collection and recovery stage for leaked electrolyte, preventing direct contact between the leaked electrolyte and the external environment, reducing the risk of environmental pollution, and also preventing corrosive electrolyte from causing additional corrosion to surrounding equipment. It also improves the utilization rate of vanadium resources, as the electrolyte in vanadium redox flow batteries contains high-value vanadium ions. Leaked electrolyte stored in the recovery tank can be reused after further processing, reducing battery operating costs. Furthermore, the monitoring by the level sensor and the automatic control of the monitoring host eliminate the need for manual handling of leaks, reducing the safety risks of manual operation and preventing overflow from the recovery tank, further enhancing the safety and reliability of the entire system.

[0040] In the embodiments of this application, such as Figure 3 As shown, a heating component 106 is also provided around the circulation pipe 104; the monitoring host 101 is used to send a heating command to the heating component when the temperature of the electrolyte at both ends of the circulation pipe 104 is lower than the preset temperature range according to the working condition parameter signal; the heating component 106 is used to heat the electrolyte according to the heating command so that the temperature of the electrolyte rises back to the preset temperature range.

[0041] Understandably, a heating component is added around the circulation pipe 104 and a control connection is established between it and the monitoring host 101. The specific operating logic is as follows: the monitoring host 101 will continuously analyze the electrolyte temperature data at both ends of the pipe transmitted by the first detection component. When it is determined that the electrolyte temperature is lower than the preset temperature range required for the operation of the vanadium redox flow battery, a heating command will be sent to the heating component 106. The heating component 106 will heat the electrolyte in the pipe until the electrolyte temperature rises back to the preset range, at which point the monitoring host will control the heating component to stop operating.

[0042] The embodiments of this application can ensure the operating efficiency of the vanadium redox flow battery. The electrochemical reaction efficiency of the vanadium redox flow battery has strict requirements on the electrolyte temperature. If the temperature is too low, the activity of vanadium ions will decrease, and the charge and discharge efficiency of the battery will decrease. The automatic regulation of the heating component can keep the electrolyte stable within the optimal reaction temperature range, ensuring the energy conversion efficiency of the battery. Secondly, it improves the environmental adaptability of the system. Even when operating in low-temperature environments, the heating component can maintain a suitable electrolyte temperature, preventing the battery from failing to function properly due to excessively low ambient temperatures.

[0043] Secondly, embodiments of the present invention provide a method for detecting the circulation pipeline in a vanadium redox flow battery, characterized in that the method is applied to a monitoring host, such as... Figure 4 As shown, the method also includes: Step S401: Real-time acquisition of operating condition parameter signals sent by the first detection component set at both ends of the circulation pipeline, and leakage status signals sent by the second detection component set around the circulation pipeline. First, the first temperature sensor and the first flow sensor installed at the input end of the circulation pipeline, and the second temperature sensor and the second flow sensor installed at the output end, continuously collect real-time temperature and flow data of the electrolyte in the pipeline at a frequency of 1Hz. This data first passes through the sensor's built-in signal conditioning module to complete filtering, amplification, and analog-to-digital conversion, converting it into operating condition parameter signals that meet transmission standards, and then sending them to the monitoring host in real time through a preset electrical connection line. At the same time, the linear leakage sensor spirally wound around the outside of the pipeline continuously detects its own resistance value. Once leakage occurs in the pipeline, the electrolyte contacts the sensing line, causing a change in resistance. The sensor converts the resistance change value into a leakage status signal and sends it to the monitoring host synchronously. Throughout the process, the monitoring host marks each set of received signals with a corresponding timestamp to ensure the consistency of data timing.

[0044] Step S402: Perform corresponding control operations based on the operating condition parameter signals and leakage status signals.

[0045] The system analyzes operating parameter signals, extracting temperature and flow rate values ​​at both ends of the pipeline and comparing them with the preset optimal operating temperature range for the electrolyte and the threshold for the flow rate difference between the two ends of the pipeline, respectively. Simultaneously, it analyzes leakage status signals to determine if a real leak exists. If the operating parameter signals indicate a temperature below the preset range, the monitoring host sends a pulse heating command to the heating component, controlling it to operate at the set power until the temperature returns to the range. If the flow rate difference between the two ends of the pipeline exceeds the preset threshold, or if the leakage status signal indicates a leak, the monitoring host first performs dual-signal cross-verification. After confirming the fault, it sends a shutdown command to the circulating pump and triggers the alarm module. If both temperature and leakage / flow abnormalities exist simultaneously, the monitoring host prioritizes the shutdown command before proceeding with subsequent auxiliary adjustments. The entire process follows a preset fault priority logic to ensure system safety and stability.

[0046] In this embodiment of the application, the method further includes: acquiring historical leakage status signals and determining the number of leakages at each leakage location in the circulation pipeline based on the historical leakage status signals; prioritizing the leakage locations according to the number of leakages from high to low to obtain a priority sequence; allocating sampling frequencies to the corresponding second detection components according to the order of the leakage locations in the priority sequence, and automatically triggering airtightness detection for the leakage locations during idle periods.

[0047] The monitoring host first retrieves all historical leakage status signals stored in the local storage module. These signals all have corresponding timestamps and leakage location markers. This location marker comes from the segmented sensing design of the second detection component. The linear leakage sensor will mark the specific pipe segment where the leakage occurred according to the physical segmentation of the pipeline. Then, the monitoring host will use a data filtering algorithm to summarize and count the leakage status signals of the same pipe segment to obtain the cumulative number of leakages for each pipe segment in the circulating pipeline, such as the total number of leakages for the pipe joint segment and the bend segment. The whole process will automatically exclude invalid signals generated by sensor false triggers and only count the real leakage data that has been verified.

[0048] Based on the number of leaks at each leak location obtained in the previous step, the monitoring host will start a sorting algorithm to sort all pipe locations with leak records in descending order of the number of leaks. Finally, a leak risk priority sequence will be generated, with the pipe segment with the most leaks being placed at the front of the sequence. For example, the pipe inlet interface segment with the most leaks will become the highest priority location. This sequence will be stored in the temporary running module of the monitoring host as the basis for subsequent monitoring strategy adjustments.

[0049] The monitoring host first reads the priority sequence obtained in the previous step and assigns corresponding sampling frequencies to the second detection components at different positions in the sequence: the higher the priority position, the higher the sampling frequency. For example, for the pipe section with the highest priority, the sampling interval of the linear leakage sensor will be shortened from the default 1 second to 0.2 seconds. At the same time, the monitoring host will acquire the operating status of the vanadium redox flow battery in real time. When the system is detected to enter an idle period (battery stops charging and discharging, circulation pump stops), the air tightness detection process at the corresponding leakage position will be automatically triggered: by controlling the circulation pump to run at low power for a short time, a low-pressure environment is created in the pipeline. Combined with the signal change of the second detection component at that position, the air tightness of the pipeline is judged. The whole process does not require manual intervention and will automatically complete the sampling frequency adjustment and air tightness detection.

[0050] In this embodiment of the application, the method further includes: acquiring real-time pressure data of the bend and interface of the circulation pipeline; analyzing the real-time pressure data to determine whether there is abnormal vibration in the bend and interface; if there is abnormal vibration, predicting the risk level of pipeline cracking based on the real-time pressure data of the bend and interface, historical vibration data and pipeline material data; if the risk level is greater than the preset level, sending a speed reduction command to the circulation pump, increasing the sampling frequency of the second detection component, and pushing a maintenance reminder to the user.

[0051] The monitoring host first sends a data acquisition trigger command to the pressure sensors deployed at the bends and joints of the circulating pipeline. These pressure sensors are high-precision piezoelectric sensors that are attached to the inner or outer wall of the pipeline. They continuously collect pressure fluctuation data during pipeline operation at a frequency of 2Hz. The collected raw pressure data first passes through the sensor's signal processing module to complete noise reduction and analog-to-digital conversion. After being converted into standardized real-time pressure data, it is transmitted to the monitoring host in real time through the electrical connection line. At the same time, the data will be accompanied by corresponding location markers to clearly distinguish whether the pressure data is from the bend or the joint.

[0052] The monitoring host retrieves the preset pressure fluctuation reference range during normal pipeline operation. This range is pre-calibrated based on the pipeline material and electrolyte flow range. Then, it compares the received real-time pressure data with the reference range and analyzes the fluctuation frequency of the pressure data through Fourier transform. When the amplitude of the pressure fluctuation exceeds the reference range and the fluctuation frequency matches the characteristic frequency of pipeline vibration, it will determine that there is abnormal vibration at that location. The entire process will be completed within 1 second, and the corresponding location and fluctuation amplitude will be marked for the abnormal vibration result.

[0053] The monitoring host retrieves historical vibration data and pre-entered pipe material parameters for that location. The historical vibration data includes the pressure fluctuation amplitude and duration when abnormal vibrations occurred at that location before, while the pipe material parameters include the tensile strength and fatigue limit of the material. Then, the vibration amplitude and frequency corresponding to the real-time pressure data, along with the historical data and material parameters, are input into a preset stress analysis model. The model calculates the stress concentration at that location and, combined with the material's fatigue limit, classifies the risk of pipe cracking into three levels: low, medium, and high. The entire calculation process automatically matches the pipe structural parameters at that location, such as the curvature of bends and the sealing method of joints, to ensure the accuracy of the prediction results.

[0054] The monitoring host compares the predicted risk level with the preset risk threshold. If the risk level exceeds the threshold, it first sends a speed reduction command to the circulation pump to reduce the operating speed of the circulation pump, thereby reducing the impact of electrolyte flow on the pipeline. At the same time, it sends a sampling frequency adjustment command to the second detection component corresponding to that location, shortening the sampling interval of the leak sensor at that location from the default value to 1 / 5 of the original, improving the sensitivity of leak detection. Finally, it pushes a maintenance reminder to the bound operation and maintenance terminal through the preset communication module. The reminder includes the abnormal location, risk level, and suggested maintenance time. The entire process will be logged synchronously for subsequent operation and maintenance traceability.

[0055] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of a monitoring host provided in an optional embodiment of the present invention, such as... Figure 5As shown, the monitoring host includes one or more processors 10, memory 20, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the monitoring host, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple storage devices, if desired. Similarly, multiple monitoring hosts can be connected, each providing some of the necessary operations (e.g., as a server array, a set of blade servers, or a multiprocessor system).

[0056] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0057] The memory 20 stores instructions executable by at least one processor 10 to cause the at least one processor 10 to perform the method shown in the above embodiments.

[0058] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created by the monitoring host based on the display of a mini-program landing page. Furthermore, the memory 20 may include high-speed random access memory and non-transient memory, such as at least one disk storage device, flash memory device, or other non-transient solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, which can be connected to the monitoring host via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0059] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0060] The monitoring host also includes a communication interface 30 for communicating with other devices or communication networks.

[0061] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0062] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A device for detecting a circulating pipe in a vanadium redox flow battery, characterized in that, The detection device includes: a monitoring host, a first detection component disposed at both ends of the circulation pipe, and a second detection component disposed around the circulation pipe; the first detection component and the second detection component are respectively electrically connected to the monitoring host; The first detection component is used to detect the operating parameters of the electrolyte at both ends of the circulation pipeline and send the corresponding operating parameter signals to the monitoring host. The second detection component is used to detect the leakage status of the circulation pipeline and send a corresponding leakage status signal to the monitoring host. The monitoring host is used to perform corresponding control operations based on the operating condition parameter signals and the leakage status signals.

2. The apparatus of claim 1, wherein, The first detection component includes: a first temperature sensor and a first flow sensor disposed at the input end of the circulation pipe, and a second temperature sensor and a second flow sensor disposed at the output end of the circulation pipe.

3. The apparatus of claim 1, wherein, The second detection component includes a linear leak sensor spirally wound around the circulation pipe.

4. The apparatus of claim 1, wherein, The monitoring host is also electrically connected to the circulation pump of the circulation pipeline; The monitoring host is used to send a control command to the circulation pump to stop the circulation pump when the difference in electrolyte flow rate at both ends of the circulation pipeline is greater than a preset difference based on the operating condition parameter signal, and / or the circulation pipeline is found to be leaking based on the leakage status signal.

5. The apparatus of claim 4, wherein, The outer side of the circulation pipeline is provided with a recovery tank, a liquid pump and a recovery container. The recovery tank is connected to the input end of the liquid pump through a pipeline, and the output end of the liquid pump is connected to the recovery container. A liquid level sensor is provided in the recovery tank and is electrically connected to the monitoring host. The liquid level sensor is used to detect the leakage liquid level data in the recovery tank in real time and send the corresponding liquid level signal of the leakage liquid level data to the monitoring host. The monitoring host is used to send a start command to the pump when it is determined from the liquid level signal that the leakage liquid level in the recovery tank is higher than a preset threshold. The pump is used to pump the leaked liquid from the recovery tank to the recovery vessel according to the start command.

6. The apparatus of claim 1, wherein, Heating components are also installed around the circulation pipe; The monitoring host is used to send a heating command to the heating component when the temperature of the electrolyte at both ends of the circulation pipeline is lower than a preset temperature range based on the operating condition parameter signal. The heating component is used to heat the electrolyte according to the heating command, so that the temperature of the electrolyte rises back to the preset temperature range.

7. A method of detecting a recirculation pipe in a vanadium redox flow battery, characterized in that, The method is applied to the monitoring host according to any one of claims 1-6, and the method further includes: The system acquires in real time the operating condition parameter signals sent by the first detection component located at both ends of the circulation pipeline, and the leakage status signals sent by the second detection component located around the circulation pipeline. Perform corresponding control operations based on the operating condition parameter signals and the leakage status signals.

8. The method of claim 7, wherein, The method further includes: Acquire historical leakage status signals and determine the number of leaks at each leakage location in the circulation pipeline based on the historical leakage status signals; The locations of leaks are prioritized according to the number of leaks, from highest to lowest, to obtain a priority sequence. The sampling frequency is assigned to the corresponding second detection component according to the order of the leakage location in the priority sequence, and the airtightness detection of the leakage location is automatically triggered during the idle period.

9. The method of claim 7, wherein, The method further includes: Acquire real-time pressure data at the bends and interfaces of the circulation pipe; Analyze the real-time pressure data to determine whether there is abnormal vibration in the bent section and the interface section; If abnormal vibration is present, the risk level of pipe cracking is predicted based on the real-time pressure data, historical vibration data, and pipe material data of the bent section and the interface section. If the risk level is greater than the preset level, a speed reduction command is sent to the circulating pump, the sampling frequency of the second detection component is increased, and a maintenance reminder is pushed to the user.

10. A monitoring host, characterized by include: A memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, the processor executing the computer instructions to perform the method of any one of claims 7 to 9.

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