Liquid density monitoring method and device, electronic equipment and storage medium

Abstract

The invention discloses a liquid density monitoring method and device, electronic equipment and a storage medium, and relates to the technical field of control, slurry differential pressure signals are collected by means of a preset differential pressure measurement assembly, the density is calculated, and meanwhile measurement, flushing and pollution discharge execution assemblies are connected into an automatic control system to form a closed-loop control process. Sediment accumulation caused by slurry solid content change in long-term operation can be reduced through flushing and pollution discharge, and differential pressure signal fluctuation is avoided; the density value can be dynamically corrected based on historical data and working condition parameters to improve the measurement accuracy, fault self-diagnosis and alarm prompting are achieved by setting fault judgment conditions, manual inspection and experience judgment are replaced, the response speed is increased, and the measurement accuracy is improved. The technical effects of reducing slurry sediments, stabilizing differential pressure signals, reducing the maintenance cost, improving the desulfurization efficiency, avoiding the non-planned shutdown of the system and enhancing the operation stability of the desulfurization absorption tower are achieved.

Description

Technical Field

[0001] This disclosure relates to the field of control technology, and in particular to a method and apparatus for monitoring liquid density, electronic equipment, and storage medium. Background Technology

[0002] As a core process equipment in the flue gas desulfurization system of thermal power plants, the slurry density monitoring technology of the desulfurization absorption tower directly affects the desulfurization efficiency, gypsum dewatering performance, and system energy consumption. Among related technologies, a complete monitoring system from slurry sampling to density calculation has been constructed through the coordinated operation of pressure transmitter signal acquisition, sampling pipeline design, and DCS system integration.

[0003] In related technologies, the installation spacing of pressure transmitters and the inclination angle of pipelines lack systematic optimization. During long-term operation, changes in the solid content of slurry can easily lead to the accumulation of deposits, which in turn causes fluctuations in differential pressure signals. Furthermore, since the control logic does not integrate fault self-diagnosis functions, when valve action timeouts or differential pressure abnormalities occur, manual inspection and experience-based judgment are required. This not only increases maintenance costs but also causes a sharp drop in desulfurization efficiency due to response delays, and may even trigger system shutdown. Summary of the Invention

[0004] This disclosure provides a method, apparatus, electronic device, and storage medium for monitoring liquid density.

[0005] According to a first aspect of this disclosure, a method for monitoring liquid density is provided, comprising: Based on a preset differential pressure measurement component, the differential pressure signal of the desulfurization absorption tower slurry is collected, and the slurry density value is calculated based on the differential pressure signal. The differential pressure measurement component and the corresponding execution components of the flushing and sewage discharge components are connected to the automatic control system to construct a closed-loop control process that includes density measurement, flushing and sewage discharge. Based on historical density measurement data and slurry operating parameters, the slurry density value is dynamically corrected, and fault judgment conditions are set. When the fault judgment conditions are met, an alarm is triggered and the cause of the fault is indicated.

[0006] In some embodiments, the preset differential pressure measurement assembly includes at least two measuring elements, which are disposed on the sampling vertical cylinder and arranged at intervals in the vertical direction. The measuring elements adopt a structure with corrosion resistance and anti-scaling function. The sampling pipeline connected to the sampling vertical cylinder adopts a layout design that can reduce slurry retention and deposition.

[0007] In some embodiments, before connecting the differential pressure measurement component and the corresponding execution components of the flushing and sewage discharge components to the automatic control system to construct a closed-loop control process including density measurement, flushing, and sewage discharge, the method further includes: A combination of forward and reverse flushing is used to remove deposits from pipelines and measurement areas; After the density measurement cycle is completed, a sludge discharge operation is performed. The duration of the sludge discharge operation is dynamically adjusted according to the solid content level of the slurry.

[0008] In some embodiments, the automatic control system includes a human-machine interface for displaying slurry density values, differential pressure signal values, operating status of actuators, and fault alarm information in real time; the operation mode switching includes switching between automatic program control mode and manual intervention mode.

[0009] In some embodiments, the dynamic correction of the slurry density value based on historical density measurement data and slurry operating parameters includes: Calculate the deviation between the current slurry density value and the average density value within a preset historical period. When the deviation is greater than a preset deviation threshold, activate the density compensation algorithm to correct the current slurry density value.

[0010] In some embodiments, the slurry density value is dynamically corrected based on historical density measurement data and slurry operating parameters, and fault judgment conditions are set. When the fault judgment conditions are met, an alarm is triggered, and the cause of the fault is indicated, including: In response to the slurry differential pressure signal exceeding the preset normal range, or the action response time of the actuator exceeding the preset duration, or the abnormal change in slurry flow rate, the corresponding fault cause will be indicated.

[0011] According to a second aspect of this disclosure, a liquid density monitoring device is provided, comprising: The acquisition unit is used to acquire the differential pressure signal of the desulfurization absorption tower slurry based on the preset differential pressure measurement component and calculate the slurry density value according to the differential pressure signal. The construction unit is used to connect the execution components corresponding to the differential pressure measurement component and the flushing and sewage discharge component to the automatic control system to construct a closed-loop control process that includes density measurement, flushing and sewage discharge. The correction unit is used to dynamically correct the slurry density value based on historical density measurement data and slurry operating parameters, and to set fault judgment conditions. When the fault judgment conditions are met, an alarm is triggered and the cause of the fault is indicated.

[0012] In some embodiments, the preset differential pressure measurement assembly includes at least two measuring elements, which are disposed on the sampling vertical cylinder and arranged at intervals in the vertical direction. The measuring elements adopt a structure with corrosion resistance and anti-scaling function. The sampling pipeline connected to the sampling vertical cylinder adopts a layout design that can reduce slurry retention and deposition.

[0013] In some embodiments, the apparatus further includes: The cleaning unit is used to remove deposits in the pipeline and measurement area by combining forward flushing and reverse flushing before the construction unit connects the execution components corresponding to the differential pressure measurement component and the flushing and sewage discharge component to the automatic control system and constructs a closed-loop control process that includes density measurement, flushing and sewage discharge. The adjustment unit is used to perform a sludge discharge operation after the density measurement cycle is completed. The duration of the sludge discharge operation is dynamically adjusted according to the solid content level of the slurry.

[0014] In some embodiments, the automatic control system includes a human-machine interface for displaying slurry density values, differential pressure signal values, operating status of actuators, and fault alarm information in real time; the operation mode switching includes switching between automatic program control mode and manual intervention mode.

[0015] In some embodiments, the correction unit is further configured to: Calculate the deviation between the current slurry density value and the average density value within a preset historical period. When the deviation is greater than a preset deviation threshold, activate the density compensation algorithm to correct the current slurry density value.

[0016] In some embodiments, the correction unit is further configured to: In response to the slurry differential pressure signal exceeding the preset normal range, or the action response time of the actuator exceeding the preset duration, or the abnormal change in slurry flow rate, the corresponding fault cause will be indicated.

[0017] According to a third aspect of this disclosure, an electronic device is provided, comprising: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect above.

[0018] According to a fourth aspect of this disclosure, a non-transitory computer-readable storage medium is provided storing computer instructions, wherein the computer instructions are configured to cause the computer to perform the method described in the first aspect above.

[0019] According to a fifth aspect of this disclosure, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the method described in the first aspect above.

[0020] The liquid density monitoring method, apparatus, electronic equipment, and storage medium disclosed herein, through this application, can acquire slurry differential pressure signals and calculate density using preset differential pressure measurement components. Simultaneously, the execution components for measurement, flushing, and sewage discharge are integrated into an automatic control system to form a closed-loop control process. This reduces sediment accumulation caused by changes in slurry solid content during long-term operation through flushing and sewage discharge, avoiding differential pressure signal fluctuations. Furthermore, it can dynamically correct density values ​​based on historical data and operating parameters to improve measurement accuracy. By setting fault judgment conditions, it achieves fault self-diagnosis and alarm prompts, replacing manual inspection and experience-based judgment, and accelerating response speed. Therefore, it can solve the technical problems in the prior art where sediment accumulation and differential pressure signal fluctuations are caused by unoptimized pressure transmitter installation and pipeline design, and the lack of fault self-diagnosis function in the control logic relies on manual intervention, leading to increased maintenance costs, response delays, a sharp drop in desulfurization efficiency, or even system shutdown. This achieves the technical effects of reducing slurry sediment, stabilizing differential pressure signals, reducing maintenance costs, improving desulfurization efficiency, avoiding unplanned system shutdowns, and enhancing the operational stability of the desulfurization absorption tower.

[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0022] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein: Figure 1 A schematic flowchart illustrating a liquid density monitoring method provided in an embodiment of this disclosure; Figure 2 A schematic diagram of the structure of a liquid density monitoring device provided in an embodiment of this disclosure; Figure 3 A schematic diagram of another liquid density monitoring device provided in an embodiment of this disclosure; Figure 4 A schematic block diagram of an example electronic device provided for embodiments of this disclosure. Detailed Implementation

[0023] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0024] The following description, with reference to the accompanying drawings, describes a method, apparatus, electronic device, and storage medium for monitoring liquid density according to embodiments of the present disclosure.

[0025] Figure 1 This is a schematic flowchart of a liquid density monitoring method provided in an embodiment of the present disclosure.

[0026] like Figure 1 As shown, the method includes the following steps: Step 101: Based on the preset differential pressure measurement component, collect the differential pressure signal of the desulfurization absorption tower slurry and calculate the slurry density value according to the differential pressure signal; A preset differential pressure measurement component is adopted, which is configured to work in conjunction with the slurry passage of the desulfurization absorption tower to collect differential pressure signals of the slurry under preset spatial conditions. Then, based on the density calculation logic constructed on the principle of hydrostatics, the collected differential pressure signals are converted into corresponding slurry density values, thereby realizing continuous monitoring of the slurry density in the desulfurization absorption tower.

[0027] The preset differential pressure measurement component must meet the core function of stably acquiring a representative differential pressure signal of the slurry. The density calculation logic must be compatible with the acquisition conditions of the differential pressure signal (such as the spatial parameters of the component layout) to ensure the validity of the density calculation results. As one implementation, the differential pressure measurement component may include two pressure sensing units arranged at a preset vertical spacing on a sampling structure directly connected to the absorption tower. These units acquire slurry pressure signals at different heights to obtain the differential pressure, and then calculate the density value based on ρ=(p1-p2) / gh. The piping layout of the sampling structure must ensure that the slurry state is consistent with that inside the absorption tower.

[0028] By combining differential pressure measurement components with the principles of hydrostatics, the reliance on closed technology can be broken, enabling autonomous monitoring of slurry density. At the same time, the calculation method based on differential pressure signals can provide stable theoretical support for density measurement, effectively improving measurement reliability, reducing the operational risks of desulfurization systems caused by density monitoring problems, and ensuring desulfurization efficiency and environmental emission stability.

[0029] Step 102: Connect the differential pressure measurement component and the corresponding execution components of the flushing and sewage discharge components to the automatic control system to construct a closed-loop control process that includes density measurement, flushing and sewage discharge. A differential pressure measurement component that collects slurry differential pressure signals, along with corresponding execution components that implement flushing and sewage discharge actions, are jointly connected to an automatic control system with signal processing and command output capabilities, forming a functional synergy among the three. The automatic control system must be able to receive signals transmitted from the differential pressure measurement component to sense the measurement status, and simultaneously send control commands to the flushing and sewage discharge execution components to trigger corresponding actions. This constructs a closed-loop control process covering "slurry density measurement - initiating flushing based on measurement needs or preset logic - performing sewage discharge after flushing - restoring measurement preparation state after sewage discharge," ensuring that each link automatically connects according to preset logic or actual operating conditions without relying on manual operation. As one implementation method, the pressure signals from the differential pressure measurement component, the pneumatic butterfly valve for flushing, and the pneumatic valve for sewage discharge can all be connected to the DCS system. The control logic developed by the DCS achieves closed-loop operation of "sampling measurement - flushing pipeline - sewage slurry discharge - standby preparation for the next measurement."

[0030] This technical solution constructs a closed-loop control process that includes density measurement, flushing, and sewage discharge. This automatically avoids pipeline blockage and data distortion caused by slurry deposition, significantly reducing manual maintenance intervention and lowering maintenance costs. At the same time, relying on the coordinated control of the automatic control system, it ensures the continuity and reliability of density measurement, avoids the impact of measurement abnormalities on desulfurization efficiency, and further reduces the risk of exceeding environmental emission standards.

[0031] Step 103: Based on historical density measurement data and slurry operating parameters, dynamically correct the slurry density value and set fault judgment conditions. When the fault judgment conditions are met, trigger an alarm and indicate the cause of the fault.

[0032] To address the issues of data distortion due to fluctuations in operating conditions and difficulty in quickly locating the cause of malfunctions in existing desulfurization absorption tower slurry density measurements, this technical solution constructs a dynamic density correction mechanism by calling historical density measurement data that reflects the slurry density variation pattern and combining it with slurry operating condition parameters that characterize the actual operating state of the slurry. This mechanism adjusts the slurry density value calculated from the differential pressure signal in real time to eliminate the interference of operating condition fluctuations on the measurement results and ensure the accuracy of the density value.

[0033] Fault judgment conditions are set based on the key characteristics of the density measurement process. These conditions need to cover abnormal scenarios that affect the effectiveness of measurement or system operation. When the monitored parameters meet the preset fault judgment conditions, an alarm signal is automatically triggered, and the fault cause prompt corresponding to the fault judgment condition is output simultaneously, providing direction for fault diagnosis. As one implementation method, the density value can be dynamically corrected by combining historical density data with operating parameters such as slurry flow rate and solid content. Differential pressure abnormality and valve action timeout are set as fault judgment conditions. When the conditions are triggered, an alarm is triggered and prompts reasons such as "pipeline blockage" or "sensor failure".

[0034] This technical solution effectively improves the accuracy of slurry density measurement by dynamically correcting historical data and operating parameters, avoiding the impact of data distortion on the control of the desulfurization system. At the same time, the fault diagnosis and alarm functions can quickly locate problems, reduce troubleshooting time, lower manual intervention costs, further ensure the long-term stable operation of the desulfurization absorption tower system, and avoid the risk of exceeding environmental emission standards.

[0035] In some embodiments, the preset differential pressure measurement assembly includes at least two measuring elements, which are disposed on the sampling vertical cylinder and arranged at intervals in the vertical direction. The measuring elements adopt a structure with corrosion resistance and anti-scaling function. The sampling pipeline connected to the sampling vertical cylinder adopts a layout design that can reduce slurry retention and deposition.

[0036] The pre-set differential pressure measurement component specifically employs two high-precision diaphragm pressure transmitters. These two pressure transmitters are fixedly installed on the sampling vertical cylinder, which is directly connected to the inside of the desulfurization absorption tower. They are arranged at a fixed interval of 1 meter along the vertical direction of the sampling vertical cylinder to ensure stable acquisition of pressure signals of the slurry at different heights. The effective differential pressure data is then obtained through the pressure difference between the two transmitters. At the same time, the diaphragm component of the pressure transmitter is made of a special material resistant to slurry corrosion and has been treated with an anti-scaling coating. This effectively resists the corrosiveness of the desulfurization slurry and prevents solid impurities in the slurry from adhering to and scaling on the diaphragm surface, ensuring long-term measurement accuracy. The sampling pipeline connected to the sampling vertical cylinder uses plastic-lined steel pipe as the base material. The plastic lining can further improve the corrosion resistance and inner wall smoothness of the pipeline. The pipeline adopts an inclined layout design, and the inclination angle is adapted to the natural flow direction of the slurry. The inclined structure shortens the residence time of the slurry in the pipeline. Combined with the smooth inner wall, it reduces the adhesion and deposition of solid particles in the slurry, ensuring that the slurry in the pipeline is consistent with the slurry in the absorption tower.

[0037] The diaphragm pressure transmitter, equipped with corrosion resistance and anti-scaling properties, can adapt to the harsh environment of desulfurization slurry, reduce component damage and accuracy decay, and extend equipment maintenance cycles. The 1-meter fixed vertical spacing ensures the stability and effectiveness of the differential pressure signal, providing accurate basic data for density calculation. The inclined layout of the plastic-lined steel pipe sampling pipeline can significantly reduce the probability of slurry deposition and pipeline blockage, avoid measurement interruptions caused by pipeline blockage, and further improve the continuity and reliability of density measurement.

[0038] In some embodiments, before connecting the differential pressure measurement component and the corresponding execution components of the flushing and sewage discharge components to the automatic control system to construct a closed-loop control process including density measurement, flushing, and sewage discharge, the method further includes: A combination of forward and reverse flushing is used to remove deposits from pipelines and measurement areas; After the density measurement cycle is completed, a sludge discharge operation is performed. The duration of the sludge discharge operation is dynamically adjusted according to the solid content level of the slurry.

[0039] Before connecting the differential pressure measurement component and the corresponding execution components of the flushing and sewage discharge components to the automatic control system and constructing a closed-loop control process, the pre-treatment operation of the pipeline and the measurement area and the setting of sewage discharge parameters must be completed first: For sediment removal, in addition to connecting the forward flushing water pipeline, a reverse flushing water pipeline is added at the T-junction structure in the middle of the sampling tube. Both flushing pipelines are equipped with independent pneumatic butterfly valves to realize on / off control. During forward flushing, the forward flushing pneumatic butterfly valve is opened, so that the flushing water enters the sampling tube and the measuring cylinder (such as the sampling vertical cylinder) along the slurry flow direction, and flushes the sediments attached to the inner wall; during reverse flushing, the forward flushing valve is closed and the reverse flushing valve is opened, so that the flushing water impacts the pipeline and the measurement area in the opposite direction to the slurry flow, and the stubborn sediments that were not removed during forward flushing are thoroughly removed through the bidirectional water flow action. For the sewage discharge operation settings, after the density measurement cycle (including differential pressure acquisition and density calculation) is completed, the pneumatic sewage discharge valves at the upper and lower ends of the measuring cylinder are triggered to open to perform sewage discharge. At the same time, a logic is established in advance to correspond to the slurry solid content and the sewage discharge time. When the slurry solid content is detected to be higher than the preset benchmark value (such as 25%), the sewage discharge duration is extended from the usual 10 seconds to 15-20 seconds. If the solid content is lower than 15%, the sewage discharge time is shortened to 6-8 seconds. The sewage discharge time is dynamically adjusted by the real-time slurry solid content data to ensure that the sediment is fully discharged and to avoid water waste.

[0040] The combined forward and reverse flushing method can remove sediment from pipelines and measurement areas from both directions, which is more thorough than flushing in one direction and avoids residual sediment from affecting the accuracy of subsequent measurements. The discharge time is dynamically adjusted according to the solid content of the slurry, which can ensure that sediment is completely removed when the solid content is high to prevent pipeline blockage, and reduce unnecessary discharge time and water consumption when the solid content is low, laying a clean and efficient foundation for the stable operation of the subsequent closed-loop control process.

[0041] In some embodiments, the automatic control system includes a human-machine interface for displaying slurry density values, differential pressure signal values, operating status of actuators, and fault alarm information in real time; the operation mode switching includes switching between automatic program control mode and manual intervention mode.

[0042] The human-machine interface in the automatic control system specifically adopts the HMI interface developed by the upper computer configuration. This interface uses a combination of digital display and graphical labels to present the density value of the desulfurization absorption tower slurry in real time (i.e., the real-time slurry density data calculated by differential pressure signal) and differential pressure signal value (including the individual pressure signals collected by two pressure transmitters and the difference between the two signals). At the same time, the interface uses different colored icons (such as green for open and red for closed) to indicate the operating status of the pneumatic butterfly valve of the flushing component and the pneumatic valve of the sewage discharge component. When the system triggers a fault, the interface will simultaneously display the fault alarm information in the form of a pop-up window and flashing red text, including the fault type (such as differential pressure abnormality, valve action timeout) and the corresponding fault cause prompt (such as "pipeline blockage" or "sensor failure"). The operation mode switching function is integrated into the function menu bar of the human-machine interface, with two mode selection buttons: "Automatic Program Control" and "Manual Intervention". In the automatic program control mode, the system automatically runs each step according to the preset closed-loop logic of "sampling-measurement-rinsing-drainage-backwashing". In the manual intervention mode, the operator can click the control button of the corresponding execution component on the interface to force start or stop the rinsing and drainage actions, or manually trigger the density to be remeasured. When switching modes, a confirmation window will pop up on the interface and display the current mode status indicator to ensure that the switching operation is traceable.

[0043] The human-machine interface intuitively presents key data and equipment status, enabling operators to monitor the system's operation in real time. Detailed display of fault alarm information can shorten troubleshooting time. The flexible switching between automatic and manual modes ensures the automation efficiency of the system during normal operation, while also allowing for quick problem handling through manual intervention in emergencies, thus improving the system's flexibility and reliability.

[0044] In some embodiments, the dynamic correction of the slurry density value based on historical density measurement data and slurry operating parameters includes: Calculate the deviation between the current slurry density value and the average density value within a preset historical period. When the deviation is greater than a preset deviation threshold, activate the density compensation algorithm to correct the current slurry density value.

[0045] When dynamically correcting the current slurry density value based on historical density measurement data and slurry operating parameters, the historical data statistical period is first preset to be continuous measurement data of the past 24 hours. Before calculating the average density value within this period, abnormal data that clearly exceeds the normal operating range (such as jump values ​​caused by temporary failures) is first removed through data filtering rules. Then, the arithmetic mean of the remaining valid data is calculated to obtain the average density value within the preset historical period. Subsequently, the absolute deviation between the currently collected and preliminarily calculated slurry density value and this average density value is calculated, with a preset deviation threshold of ±5% (this threshold is set based on the normal fluctuation range of the desulfurization absorption tower slurry density and can be fine-tuned according to actual operating conditions). When the calculated absolute deviation is greater than ±5%, the system automatically starts the density compensation algorithm. This algorithm calls the currently synchronously collected slurry operating parameters (such as slurry flow rate and solid content), and performs linear compensation adjustment on the current slurry density value according to the preset correspondence between operating parameters and density correction coefficients (for example, the correction coefficient is adjusted by 0.02 for every 0.1 m / s increase in slurry flow rate; and by 0.03 for every 1% increase in solid content). The correction is performed until the deviation between the corrected density value and the historical average density value falls back to the preset threshold range.

[0046] By removing outliers and calculating the historical average density value, the interference of abnormal historical data on deviation judgment can be avoided, ensuring the accuracy of deviation calculation. Presetting a reasonable deviation threshold can prevent unnecessary corrections from being initiated due to normal small fluctuations, reducing the system's computational load. Combined with the density compensation algorithm of slurry operating parameters, the corrected density value can be made to better match the actual operating state, further improving the accuracy of density measurement and providing reliable data support for the stable control of the desulfurization system.

[0047] In some embodiments, the slurry density value is dynamically corrected based on historical density measurement data and slurry operating parameters, and fault judgment conditions are set. When the fault judgment conditions are met, an alarm is triggered, and the cause of the fault is indicated, including: In response to the slurry differential pressure signal exceeding the preset normal range, or the action response time of the actuator exceeding the preset duration, or the abnormal change in slurry flow rate, the corresponding fault cause will be indicated.

[0048] When dynamically correcting the slurry density value based on historical density measurement data and slurry operating parameters, the effective historical measurement data of the desulfurization absorption tower slurry density within the past 48 hours (excluding abnormal jump data caused by temporary equipment failure or manual intervention) is first selected. The average density value within this period is calculated, and the current slurry operating parameters (such as real-time slurry flow rate and solid content) are collected simultaneously. The current slurry density value calculated by differential pressure signal is compared with the historical average density value. If the deviation between the two exceeds the preset reasonable range (such as ±4%), the preset density correction algorithm is called, and the current density value is compensated and adjusted in combination with the current slurry flow rate and solid content to ensure that the density value conforms to the actual operating conditions. When setting fault judgment conditions and alarm prompts, first preset the normal range of the slurry differential pressure signal (based on fluid statics formulas and actual operating data, such as 0.05-0.2MPa). If the differential pressure signal exceeds this range for 10 seconds, the first type of fault alarm is triggered. Preset the action response time threshold (such as 5 seconds) of the actuator (such as pneumatic butterfly valve for flushing and pneumatic valve for sewage discharge). If the actuator does not return an action completion signal for more than 5 seconds after receiving the control command, the second type of fault alarm is triggered. Preset the judgment standard for abnormal change in slurry flow rate (such as a flow rate change of more than 20% within 1 minute). If the flow rate is detected to meet the change standard, the third type of fault alarm is triggered. Among them, the first type of alarm corresponds to the prompt "pipeline blockage or pressure sensor failure", the second type of alarm corresponds to the prompt "actuator jamming or air source failure", and the third type of alarm corresponds to the prompt "abnormal slurry circulation conditions in the absorption tower".

[0049] By combining historical data with dynamic correction of operating parameters, the interference of slurry operating condition fluctuations on density measurement can be effectively offset, improving the accuracy of density values. Multi-dimensional fault judgment conditions can comprehensively cover common abnormal scenarios in density measurement and system operation, while targeted fault cause prompts can significantly shorten the time for operators to troubleshoot faults, reduce the duration of measurement interruptions caused by faults, and further ensure the stable operation of the desulfurization absorption tower density monitoring system and the continuity of the desulfurization process.

[0050] Corresponding to the liquid density monitoring method described above, this invention also proposes a liquid density monitoring device. Since the device embodiments of this invention correspond to the method embodiments described above, details not disclosed in the device embodiments can be referred to in the method embodiments described above, and will not be repeated here.

[0051] Figure 2 This is a schematic diagram of the structure of a liquid density monitoring device provided in an embodiment of the present disclosure, as shown below. Figure 2 As shown, it includes: The acquisition unit 21 is used to acquire the differential pressure signal of the desulfurization absorption tower slurry based on the preset differential pressure measurement component and calculate the slurry density value according to the differential pressure signal. The construction unit 22 is used to connect the execution components corresponding to the differential pressure measurement component and the flushing and sewage discharge component to the automatic control system to construct a closed-loop control process that includes density measurement, flushing and sewage discharge links; The correction unit 23 is used to dynamically correct the slurry density value based on historical density measurement data and slurry operating parameters, and to set fault judgment conditions. When the fault judgment conditions are met, an alarm is triggered and the cause of the fault is indicated.

[0052] Furthermore, in one possible implementation of the present disclosure, the preset differential pressure measurement assembly includes at least two measuring elements, which are disposed on the sampling vertical cylinder and arranged at intervals along the vertical direction. The measuring elements adopt a structure with corrosion resistance and anti-scaling function. The sampling pipeline connected to the sampling vertical cylinder adopts a layout design that can reduce slurry retention and deposition.

[0053] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 3 As shown, the device further includes: The cleaning unit 24 is used to remove deposits in the pipeline and measurement area by combining forward flushing and reverse flushing before the construction unit 22 connects the execution components corresponding to the differential pressure measurement component and the flushing and sewage discharge component to the automatic control system and constructs a closed-loop control process including density measurement, flushing and sewage discharge. The adjustment unit is used to perform a sludge discharge operation after the density measurement cycle is completed. The duration of the sludge discharge operation is dynamically adjusted according to the solid content level of the slurry.

[0054] Furthermore, in one possible implementation of this disclosure embodiment, the automatic control system includes a human-machine interface, which is used to display slurry density value, differential pressure signal value, operating status of actuators and fault alarm information in real time; the operation mode switching includes switching between automatic program control mode and manual intervention mode.

[0055] Furthermore, in one possible implementation of this disclosure, the correction unit 23 is further configured to: Calculate the deviation between the current slurry density value and the average density value within a preset historical period. When the deviation is greater than a preset deviation threshold, activate the density compensation algorithm to correct the current slurry density value.

[0056] Furthermore, in one possible implementation of this disclosure, the correction unit 23 is further configured to: In response to the slurry differential pressure signal exceeding the preset normal range, or the action response time of the actuator exceeding the preset duration, or the abnormal change in slurry flow rate, the corresponding fault cause will be indicated.

[0057] It should be noted that the foregoing explanation of the method embodiments also applies to the apparatus of the embodiments of this disclosure, and the principle is the same. Therefore, the embodiments of this disclosure are not limited thereto.

[0058] According to embodiments of this disclosure, this disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0059] Figure 4 A schematic block diagram of an example electronic device 400 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0060] like Figure 4 As shown, device 400 includes a computing unit 401, which can perform various appropriate actions and processes based on a computer program stored in ROM (Read-Only Memory) 402 or a computer program loaded from storage unit 408 into RAM (Random Access Memory) 403. RAM 403 may also store various programs and data required for the operation of device 400. The computing unit 401, ROM 402, and RAM 403 are interconnected via bus 404. I / O (Input / Output) interface 405 is also connected to bus 404.

[0061] Multiple components in device 400 are connected to I / O interface 405, including: input unit 406, such as keyboard, mouse, etc.; output unit 407, such as various types of monitors, speakers, etc.; storage unit 408, such as disk, optical disk, etc.; and communication unit 409, such as network card, modem, wireless transceiver, etc. Communication unit 409 allows device 400 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0062] The computing unit 401 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 401 include, but are not limited to, CPUs (Central Processing Units), GPUs (Graphics Processing Units), various special-purpose AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSPs (Digital Signal Processors), and any suitable processor, controller, microcontroller, etc. The computing unit 401 performs the various methods and processes described above, such as methods for monitoring liquid density. For example, in some embodiments, the liquid density monitoring method may be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 408. In some embodiments, part or all of the computer program may be loaded and / or installed on device 400 via ROM 402 and / or communication unit 409. When the computer program is loaded into RAM 403 and executed by the computing unit 401, one or more steps of the methods described above may be performed. Alternatively, in other embodiments, the computing unit 401 may be configured to perform the aforementioned liquid density monitoring method by any other suitable means (e.g., by means of firmware).

[0063] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application-Specific Standard Products), SOCs (System-on-Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0064] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0065] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, RAM, ROM, EPROM (Electrically Programmable Read-Only Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0066] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0067] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include LANs (Local Area Networks), WANs (Wide Area Networks), the Internet, and blockchain networks.

[0068] Computer systems can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. A server can be a cloud server, also known as a cloud computing server or cloud host, a hosting product within the cloud computing service system that addresses the shortcomings of traditional physical hosts and VPS (Virtual Private Server) services, such as high management difficulty and weak business scalability. Servers can also be servers for distributed systems or servers incorporating blockchain technology.

[0069] It's important to note that artificial intelligence (AI) is the study of enabling computers to simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). It encompasses both hardware and software technologies. AI hardware technologies generally include sensors, dedicated AI chips, cloud computing, distributed storage, and big data processing. AI software technologies primarily include computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graph technologies.

[0070] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0071] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A method of monitoring the density of a liquid, characterised by, The method comprises the following steps: Based on the preset differential pressure measurement component, the differential pressure signal of the desulfurization absorption tower slurry is collected, and the slurry density value is calculated according to the differential pressure signal; The differential pressure measurement component and the corresponding execution component of the flushing and blowdown component are connected to the automatic control system to build a closed-loop control process including density measurement, flushing and blowdown links; Based on historical density measurement data and slurry working condition parameters, the slurry density value is dynamically corrected, and a fault judgment condition is set. When the fault judgment condition is met, an alarm is triggered, and the fault reason is prompted.

2. The method of claim 1, wherein, The preset differential pressure measurement component comprises at least two measurement elements, which are arranged on a sampling vertical cylinder and spaced apart in the vertical direction. The measurement elements adopt a structure with corrosion resistance and anti-fouling function. The sampling pipeline connected to the sampling vertical cylinder adopts a layout design which can reduce the deposition of slurry retention.

3. The method of claim 1, wherein, Before connecting the differential pressure measurement component and the corresponding execution component of the flushing and blowdown component to the automatic control system to build a closed-loop control process including density measurement, flushing and blowdown links, the method further comprises: The deposition in the pipeline and the measurement area is removed by combining forward flushing with reverse flushing; After the density measurement period is completed, the blowdown operation is performed. The duration of the blowdown operation is dynamically adjusted according to the slurry solid content level.

4. The method of claim 1, wherein, The automatic control system comprises a human-computer interaction interface for real-time display of slurry density value, differential pressure signal value, execution component running state and fault alarm information. The operation mode switching comprises switching between automatic program control mode and manual intervention mode.

5. The method of claim 1, wherein, The dynamic correction of the slurry density value based on historical density measurement data and slurry working condition parameters comprises: Calculate the deviation between the current slurry density value and the average density value in the preset historical period. When the deviation is greater than the preset deviation threshold, start the density compensation algorithm to correct the current slurry density value.

6. The method of claim 1, wherein, The dynamic correction of the slurry density value based on historical density measurement data and slurry working condition parameters, and the setting of the fault judgment condition, when the fault judgment condition is met, trigger the alarm, and prompt the fault reason, comprise: In response to the slurry differential pressure signal exceeding the preset normal range, or the execution component action response time exceeding the preset time length and the slurry flow rate abnormally changing, the fault reason is prompted.

7. A device for monitoring the density of a liquid, characterised in that The method comprises the following steps: The acquisition unit is used for collecting the differential pressure signal of the desulfurization absorption tower slurry based on the preset differential pressure measurement component, and calculating the slurry density value according to the differential pressure signal; The construction unit is used for connecting the differential pressure measurement component and the corresponding execution component of the flushing and blowdown component to the automatic control system to build a closed-loop control process including density measurement, flushing and blowdown links; The correction unit is used for dynamically correcting the slurry density value based on historical density measurement data and slurry working condition parameters, and setting a fault judgment condition. When the fault judgment condition is met, an alarm is triggered, and the fault reason is prompted.

8. An electronic device, comprising: The method comprises the following steps: At least one processor; And The memory is connected in communication with the at least one processor; wherein, The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-6.

9. A non-transitory computer-readable storage medium having stored thereon computer instructions, wherein, The computer instructions are for causing the computer to perform the method of any one of claims 1-6.

10. A computer program product, characterised in that, A computer program comprising instructions which, when executed by a processor, implement the method of any one of claims 1-6.

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