A method, device, equipment and storage medium for water quality optimization based on a two-loop

Abstract

The application discloses a water quality optimization method and device based on a two-loop system, equipment and a storage medium. The water quality optimization method based on the two-loop system comprises the following steps: collecting ammonia concentration and hydrazine concentration of at least one loop subsystem in the two-loop system in real time based on an ammonia concentration sensor and a hydrazine concentration sensor; controlling output frequency of an ammonia metering pump or a hydrazine metering pump in the two-loop system in real time according to real-time ammonia concentration or real-time hydrazine concentration in the loop subsystem and a system type of the loop subsystem, and generating first output frequency or second output frequency; controlling ammonia solution output rate of an ammonia solution tank in the two-loop system based on the first output frequency and controlling hydrazine solution output rate of a hydrazine solution tank in the two-loop system based on the second output frequency, and optimizing water quality of the two-loop system. Through the technical scheme, the reliability and maintainability of a two-loop chemical dosing system of a nuclear power plant are improved.

Description

Technical Field

[0001] This application relates to the field of equipment maintenance technology for the secondary loop of nuclear power plants, specifically to a method, apparatus, equipment, and storage medium for water quality optimization based on the secondary loop. Background Technology

[0002] The secondary loop chemical dosing system is used to regulate the water quality of the secondary loop system in nuclear power plants to reduce oxygen corrosion and other forms of chemical erosion, improve the availability and service life of the thermal system equipment of nuclear power units, and plays a very important role in the safe operation of nuclear power plants.

[0003] Currently, the automatic dosing control logic of the secondary loop dosing system is that the metering pump automatically starts and stops within the set range of the secondary loop chemical parameters. However, after on-site testing, it has been confirmed that after the metering pump automatically stops or starts, the hydrazine and pH values ​​of the condensate and feedwater will fluctuate rapidly. In severe cases, this may lead to deviations from the requirements of the chemical monitoring program and failure to meet the control requirements. Summary of the Invention

[0004] This application provides a water quality optimization method, apparatus, equipment, and storage medium based on a two-loop system to achieve digital intelligent control of water quality optimization in the two-loop system and improve the reliability of chemical dosing in the two-loop system.

[0005] According to one aspect of this application, a water quality optimization method based on a two-loop system is provided, the method comprising:

[0006] Based on ammonia concentration sensors and hydrazine concentration sensors, the ammonia concentration and hydrazine concentration of at least one loop subsystem in the secondary loop system are collected in real time.

[0007] Based on the real-time ammonia concentration or real-time hydrazine concentration in the loop subsystem and the system type of the loop subsystem, the output frequency of the ammonia metering pump or hydrazine metering pump in the secondary loop system is adjusted in real time to generate a first output frequency or a second output frequency.

[0008] The water quality of the secondary loop system is optimized by controlling the ammonia solution output rate of the ammonia solution tank in the secondary loop system based on the first output frequency and the hydrazine solution output rate of the hydrazine solution tank in the secondary loop system based on the second output frequency.

[0009] According to another aspect of this application, a water quality optimization device based on a two-loop circuit is provided, the device comprising:

[0010] The concentration acquisition module is used to acquire the ammonia concentration and hydrazine concentration in real time from at least one loop subsystem in the secondary loop system based on the ammonia concentration sensor and the hydrazine concentration sensor.

[0011] The frequency determination module is used to adjust the output frequency of the ammonia metering pump or the hydrazine metering pump in the secondary loop system in real time according to the real-time ammonia concentration or real-time hydrazine concentration in the loop subsystem and the system type of the loop subsystem, respectively, to generate a first output frequency or a second output frequency.

[0012] The water quality optimization module is used to optimize the water quality of the secondary loop system by controlling the ammonia solution output rate of the ammonia solution tank in the secondary loop system based on the first output frequency and controlling the hydrazine solution output rate of the hydrazine solution tank in the secondary loop system based on the second output frequency.

[0013] According to another aspect of this application, an electronic device is provided, the electronic device comprising:

[0014] One or more processors;

[0015] Memory, used to store one or more programs;

[0016] When the one or more programs are executed by the one or more processors, the one or more processors implement any of the two-loop-based water quality optimization methods provided in the embodiments of this application.

[0017] According to another aspect of this application, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements any of the two-loop-based water quality optimization methods provided in the embodiments of this application.

[0018] According to another aspect of this application, a computer program product is provided, including a computer program that, when executed by a processor, implements any of the two-loop-based water quality optimization methods provided in the embodiments of this application.

[0019] This application achieves automated adjustment of the output frequency of the ammonia metering pump and the hydrazine metering pump based on the real-time ammonia concentration and the real-time hydrazine concentration of the secondary loop subsystem. By automatically adjusting the metering pump frequency according to the rate of change of ammonia and hydrazine concentrations, the hydrazine concentration and ammonia concentration in the secondary loop system are maintained within an ideal range. This realizes digital intelligent control of the secondary loop water quality control system and improves the reliability and maintainability of the chemical dosing system in the secondary loop of nuclear power plants. Attached Figure Description

[0020] Figure 1 This is a flowchart of a water quality optimization method based on a two-loop circuit according to Embodiment 1 of this application;

[0021] Figure 2 This is a flowchart of a water quality optimization method based on a two-loop circuit, according to Embodiment 2 of this application;

[0022] Figure 3 This is a flowchart of a water quality optimization method based on a two-loop circuit, according to Embodiment 3 of this application;

[0023] Figure 4 This is a schematic diagram of a water quality optimization device based on a two-loop circuit, according to Embodiment 4 of this application.

[0024] Figure 5 This is a schematic diagram of the structure of an electronic device that implements the water quality optimization method based on a two-loop circuit according to Embodiment 5 of this application. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] Example 1

[0028] Figure 1 This is a flowchart of a water quality optimization method based on a secondary loop according to Embodiment 1 of this application. This embodiment is applicable to optimizing the water quality of the secondary loop system in a nuclear power plant. It can be executed by a water quality optimization device based on the secondary loop, which can be implemented in hardware and / or software and can be configured in a computer device, such as a server. Figure 1 As shown, the method includes:

[0029] S110. Based on the ammonia concentration sensor and the hydrazine concentration sensor, the ammonia concentration and hydrazine concentration of at least one loop subsystem in the secondary loop system are collected in real time.

[0030] The secondary loop system may include a condensate system, a main feedwater and start-up feedwater system, a steam generator blowdown system, and a closed-loop cooling water system.

[0031] It should be noted that the deployment locations of the ammonia concentration sensor and the hydrazine concentration sensor may differ depending on the specific loop subsystem. These locations can be adapted to the needs of those skilled in the art. For example, the ammonia concentration sensor for the condensate system can be deployed at the deaerator inlet condensate pipe, while the hydrazine concentration sensor for the condensate system can be deployed at the high-pressure heater outlet.

[0032] In this embodiment of the invention, at least one loop subsystem can be monitored in real time for both ammonia concentration and hydrazine concentration.

[0033] S120. Based on the real-time ammonia concentration or real-time hydrazine concentration in the loop subsystem and the system type of the loop subsystem, the output frequency of the ammonia metering pump or hydrazine metering pump in the secondary loop system is adjusted in real time to generate the first output frequency or the second output frequency.

[0034] S130. The ammonia solution output rate of the ammonia solution tank in the secondary loop system is controlled based on the first output frequency, and the hydrazine solution output rate of the hydrazine solution tank in the secondary loop system is controlled based on the second output frequency, thereby optimizing the water quality of the secondary loop system.

[0035] It should be noted that in the embodiments of the present invention, different loop subsystems correspond to different system functions. Under different system functions, the ideal operating environment (ideal ammonia concentration environment and ideal hydrazine concentration environment, etc.) corresponding to each loop subsystem during operation is also different. The ideal operating environment can be understood as the optimal operating environment of the loop subsystem.

[0036] For example, the condensate system can be used to recover the water condensed after steam does work in the turbine, and after treatment, it can be reintroduced into the feedwater system, reducing water waste and preventing impurities from entering the boiler. During operation, the ideal pH range (ideal ammonia concentration) of the condensate system can be 9.6-9.7, and the ideal hydrazine concentration can be 70-90 ppb. The main feedwater and start-up feedwater systems can be used to transport the treated condensate to the boiler to meet the steam generation requirements, and to provide temporary feedwater during the start-up or low-load of the secondary loop system to ensure the stable operation of the secondary loop system. The ideal pH range of these systems can be 9.3-9.6, and the ideal hydrazine concentration can be 20-50 ppb.

[0037] By automatically classifying and optimizing the water quality of the loop subsystem according to its system type, the accuracy of water quality optimization is improved.

[0038] This application embodiment automatically adjusts the output frequency of the ammonia metering pump and the hydrazine metering pump based on the real-time ammonia concentration and the real-time hydrazine concentration of the secondary loop subsystem. By automatically adjusting the metering pump frequency according to the rate of change of ammonia concentration and hydrazine concentration, the hydrazine concentration and ammonia concentration in the secondary loop system are kept within the ideal range. This achieves digital intelligent control of the secondary loop water quality control system and improves the reliability and maintainability of the chemical dosing system in the secondary loop of the nuclear power plant.

[0039] Example 2

[0040] Figure 2 This is a flowchart of a water quality optimization method based on a two-loop system according to Embodiment 2 of this application. Based on the technical solutions of the above embodiments, this embodiment refines the statement "based on the real-time ammonia concentration and real-time hydrazine concentration in the loop subsystem, and the system type of the loop subsystem, to adjust the output frequencies of the ammonia metering pump and the hydrazine metering pump in the two-loop system in real time, generating a first output frequency and a second output frequency" into "based on the hydrazine concentration sensor deployed in the loop subsystem, determining the hydrazine change in the loop subsystem within a target time period; based on the hydrazine change and the time range corresponding to the target time period, determining the hydrazine change rate in the loop subsystem within the target time period; based on the hydrazine change rate and the update mapping relationship between the hydrazine change rate and the updated output frequency value, determining the second output frequency of the hydrazine metering pump." It should be noted that for parts not detailed in this embodiment, please refer to the relevant descriptions in other embodiments. Figure 2 As shown, the method includes:

[0041] S210. Based on the ammonia concentration sensor and the hydrazine concentration sensor, the ammonia concentration and hydrazine concentration of at least one loop subsystem in the two-loop system are collected in real time.

[0042] S220. Based on the hydrazine concentration sensors deployed in the loop subsystem, determine the change in hydrazine concentration in the loop subsystem within the target time period.

[0043] S230. Based on the change in hydrazine and the time range corresponding to the target time period, determine the rate of change of hydrazine in the loop subsystem within the target time period.

[0044] The target time period can be the data acquisition cycle of the hydrazine concentration sensor. Optionally, the acquisition cycle can be adaptively set according to those skilled in the art.

[0045] The change in hydrazine concentration can be used to describe changes in hydrazine concentration; the rate of change in hydrazine concentration can be used to characterize the rate of fluctuation of hydrazine concentration over time.

[0046] Specifically, the change in real-time hydrazine concentration collected by the hydrazine concentration sensor in the current acquisition cycle, and the historical hydrazine concentration collected in the previous acquisition cycle, can be used as the hydrazine change in the loop subsystem in the current acquisition cycle. Based on the hydrazine change in the loop subsystem in the current acquisition cycle and the acquisition cycle of the hydrazine concentration sensor, the hydrazine change rate of the loop subsystem in the current acquisition cycle can be determined.

[0047] S240. Based on the hydrazine change rate and the update mapping relationship between the hydrazine change rate and the updated output frequency value, determine the second output frequency of the hydrazine metering pump; wherein, the update mapping relationship corresponding to the loop subsystem is different for different loop subsystems.

[0048] In this embodiment of the invention, an update mapping relationship between the hydrazine change rate and the updated output frequency value can be pre-determined for each loop subsystem. This update mapping relationship can be used to characterize the output frequency of the hydrazine metering pump for different hydrazine change rate ranges. Optionally, this update mapping relationship can be determined based on historical data corresponding to the loop subsystem. The update mapping relationship between the hydrazine change rate and the updated output frequency value for different loop subsystems can be the same or different.

[0049] Optionally, based on the hydrazine change rate and the update mapping relationship between the hydrazine change rate and the output frequency, the second output frequency of the hydrazine metering pump is determined, including: if the real-time hydrazine concentration of the loop subsystem is within the target hydrazine concentration range corresponding to the loop subsystem, then the output frequency of the hydrazine metering pump corresponding to the loop subsystem is not updated; if the real-time hydrazine concentration of the loop subsystem is greater than the target hydrazine concentration range corresponding to the loop subsystem, then the target frequency update value is updated according to the target frequency in the update mapping relationship, and the target frequency update value is reduced based on the standard output frequency of the hydrazine metering pump corresponding to the loop subsystem, as the second output frequency; if the real-time hydrazine concentration of the loop subsystem is less than the target hydrazine concentration range corresponding to the loop subsystem, then the target frequency update value is updated according to the target frequency in the update mapping relationship, and the target frequency update value is increased based on the standard output frequency of the hydrazine metering pump corresponding to the loop subsystem, as the second output frequency.

[0050] Optionally, different loop subsystems will result in different target hydrazine concentration ranges and standard output frequencies for the corresponding loop subsystems.

[0051] The target hydrazine concentration range can refer to the ideal hydrazine concentration range corresponding to the loop subsystem, and the standard output frequency can refer to the daily operating frequency of the metering pump, which can be adapted to the needs of those skilled in the art.

[0052] By automatically adjusting the output frequency of the corresponding hydrazine metering pump in the loop subsystem according to the rate of change of hydrazine value, the hydrazine concentration in the loop subsystem is kept within the ideal range at all times, realizing digital intelligent control for water quality optimization in the secondary loop.

[0053] Optionally, based on the real-time ammonia concentration and real-time hydrazine concentration in the loop subsystem, and the system type of the loop subsystem, the output frequencies of the ammonia metering pump and the hydrazine metering pump in the secondary loop system are adjusted in real time to generate a first output frequency and a second output frequency. This also includes: determining the ammonia change in the loop subsystem within a target time period based on the ammonia concentration sensor deployed in the loop subsystem; determining the ammonia change rate in the loop subsystem within the target time period based on the ammonia change rate and the time range corresponding to the target time period; and determining the first output frequency of the ammonia metering pump based on the ammonia change rate and the update mapping relationship between the ammonia change rate and the updated output frequency value. The update mapping relationship between the ammonia change rate and the updated output frequency value differs depending on the loop subsystem.

[0054] Among them, the change in ammonia can be used to describe the change in ammonia concentration; the rate of change in ammonia can be used to characterize the rate of fluctuation of ammonia concentration over time.

[0055] In this embodiment of the invention, an update mapping relationship between the ammonia change rate and the updated output frequency value can be pre-determined for each loop subsystem. This update mapping relationship can be used to characterize the output frequency of the ammonia metering pump for different ammonia change rate ranges. Optionally, this update mapping relationship can be determined based on historical data corresponding to the loop subsystem. The update mapping relationship between the ammonia change rate and the updated output frequency value for different loop subsystems can be the same or different.

[0056] Optionally, the first output frequency of the ammonia metering pump is determined based on the ammonia change rate and the update mapping relationship between the ammonia change rate and the output frequency update value, including: if the real-time ammonia concentration of the loop subsystem is within the target ammonia concentration range corresponding to the loop subsystem, then the output frequency of the ammonia metering pump corresponding to the loop subsystem is not updated; if the real-time ammonia concentration of the loop subsystem is greater than the target ammonia concentration range corresponding to the loop subsystem, then the target frequency update value is lowered based on the target frequency update value corresponding to the ammonia change rate in the update mapping relationship, and used as the first output frequency; if the real-time ammonia concentration of the loop subsystem is less than the target ammonia concentration range corresponding to the loop subsystem, then the target frequency update value is increased based on the target frequency update value corresponding to the ammonia change rate in the update mapping relationship, and used as the first output frequency.

[0057] Optionally, different loop subsystems will result in different target hydrazine concentration ranges and standard output frequencies for the corresponding loop subsystems.

[0058] The target hydrazine concentration range can refer to the ideal hydrazine concentration range corresponding to the loop subsystem, and the standard output frequency can refer to the daily operating frequency of the metering pump, which can be adapted to the needs of those skilled in the art.

[0059] S250: The ammonia solution output rate of the ammonia solution tank in the secondary loop system is controlled based on the first output frequency, and the hydrazine solution output rate of the hydrazine solution tank in the secondary loop system is controlled based on the second output frequency, thereby optimizing the water quality of the secondary loop system.

[0060] Specifically, the ammonia solution output rate of the ammonia solution tank in the secondary loop system is controlled by the first output frequency of the ammonia metering pump, and the hydrazine solution output rate of the hydrazine solution tank in the secondary loop system is controlled by the second output frequency of the hydrazine metering pump. This optimizes the water quality of the secondary loop system, ensuring that the hydrazine concentration and ammonia concentration in the loop subsystem are always kept within the ideal range.

[0061] This application embodiment achieves remote control and regulation of the secondary loop water quality by real-time monitoring of the change in hydrazine and the rate of change in hydrazine within a target time period, and automatically adjusting the output frequency of the hydrazine metering pump in real time according to the rate of change in hydrazine. This improves the automation level of the control equipment and the reliability, safety and maintainability of the equipment operation, ensuring the efficient operation of the nuclear power unit.

[0062] Example 3

[0063] Figure 3 This is a flowchart of a water quality optimization method based on a two-loop system according to Embodiment 3 of this application. This embodiment refines the "process of adjusting the solution concentration in the ammonia solution tank and the hydrazine solution tank" based on the technical solutions of the above embodiments. It should be noted that for parts not described in detail in this embodiment, please refer to the relevant descriptions in other embodiments. Figure 3 As shown, the method includes:

[0064] S310. Based on the concentration of the first target solution, the initial liquid level of the ammonia solution tank to be prepared, and the first target liquid level, determine the first target volume of standard ammonia solution and the second target volume of demineralized water.

[0065] S320. Based on the liquid level sensor installed in the ammonia solution tank to be prepared, add a first target volume of standard ammonia solution and a second target volume of demineralized water to the ammonia solution tank to be prepared.

[0066] S330. Based on the second target solution concentration, the initial liquid level of the hydrazine solution tank to be prepared, and the second target liquid level, determine the third target volume of standard hydrazine solution and the fourth target volume of demineralized water.

[0067] S340. Based on the liquid level sensor located in the hydrazine solution tank to be prepared, add a third target volume of standard hydrazine solution and a fourth target volume of demineralized water to the hydrazine solution tank to be prepared.

[0068] The first target solution concentration can refer to the concentration of ammonia to be prepared in the ammonia solution tank, and the second target solution concentration can refer to the concentration of hydrazine to be prepared in the hydrazine solution tank.

[0069] The first target liquid level can refer to the full-load liquid level of the ammonia solution tank, and the second target liquid level can refer to the full-load liquid level of the hydrazine solution tank. It should be noted that the mixture of the first target volume of standard ammonia solution and the second target volume of demineralized water, after mixing, can ensure that the ammonia solution tank to be prepared reaches the first target solution concentration; the mixture of the third target volume of standard hydrazine solution and the fourth target volume of demineralized water, after mixing, can ensure that the hydrazine solution tank to be prepared reaches the second target solution concentration.

[0070] The initial liquid level of the ammonia solution tank or the hydrazine solution tank to be prepared can refer to the liquid level in the tank when the dispensing valve of the ammonia solution tank or the hydrazine solution tank to be prepared is completely closed.

[0071] In this embodiment of the invention, both the ammonia solution tank and the hydrazine solution tank are equipped with a main and a backup solution tank. When the operating solution tank reaches the minimum liquid level, it automatically exits the operating state, while the backup solution tank automatically switches to the operating state. The solution tank that has exited the operating state begins to enter the automatic dosing sequence, i.e., the ammonia solution tank or the hydrazine solution tank to be prepared. After the preparation is completed, it automatically enters the standby state.

[0072] In this embodiment of the invention, considering that the main and backup solution tanks may open simultaneously during the switching of their outlet valves, there may be cross-contamination between the main and backup solution tanks. Specifically, the liquid level in the ammonia solution tank or the hydrazine solution tank to be prepared will rise after the outlet valve of the backup solution tank is opened. If the lowest liquid level is still used as the starting liquid level for preparing the ammonia solution tank or the hydrazine solution tank to be prepared, the final drug concentration will be deviated. Therefore, the liquid level in the solution tank when the outlet valve of the ammonia solution tank or the hydrazine solution tank to be prepared is completely closed is used as the starting liquid level for drug preparation. The target liquid level is then calculated proportionally to further improve the accuracy of the drug concentration.

[0073] This invention optimizes the original time-based dosing method by controlling the dosing based on the changes in the liquid levels of the ammonia solution tank and the hydrazine solution tank. This avoids the large errors in dosing concentration caused by different metering pump outputs in the original method, which could result in situations where no dosing was added or the dosing was still considered complete even though water was being dispensed. This improves the accuracy of the dosing concentration.

[0074] Example 4

[0075] Figure 4 This is a schematic diagram of a water quality optimization device based on a secondary loop, provided in Embodiment 4 of this application. It is applicable to optimizing the water quality of the secondary loop system in a nuclear power plant. This secondary loop-based water quality optimization device can be implemented in hardware and / or software and can be configured in a computer device, such as a server. Figure 4 As shown, the device includes:

[0076] The concentration acquisition module 410 is used to acquire the ammonia concentration and hydrazine concentration of at least one loop subsystem in the two-loop system in real time based on the ammonia concentration sensor and the hydrazine concentration sensor.

[0077] The frequency determination module 420 is used to adjust the output frequency of the ammonia metering pump or the hydrazine metering pump in the secondary loop system in real time according to the real-time ammonia concentration or real-time hydrazine concentration in the loop subsystem and the system type of the loop subsystem, so as to generate a first output frequency or a second output frequency.

[0078] The water quality optimization module 430 is used to optimize the water quality of the secondary loop system by controlling the ammonia solution output rate of the ammonia solution tank in the secondary loop system based on the first output frequency and the hydrazine solution output rate of the hydrazine solution tank in the secondary loop system based on the second output frequency.

[0079] This application embodiment automatically adjusts the output frequency of the ammonia metering pump and the hydrazine metering pump based on the real-time ammonia concentration and the real-time hydrazine concentration of the secondary loop subsystem. By automatically adjusting the metering pump frequency according to the rate of change of ammonia concentration and hydrazine concentration, the hydrazine concentration and ammonia concentration in the secondary loop system are kept within the ideal range. This achieves digital intelligent control of the secondary loop water quality control system and improves the reliability and maintainability of the chemical dosing system in the secondary loop of the nuclear power plant.

[0080] Optionally, the frequency determination module 420 includes:

[0081] The change determination unit is used to determine the change in hydrazine concentration in the loop subsystem within a target time period based on the hydrazine concentration sensors deployed in the loop subsystem.

[0082] The rate of change determination unit is used to determine the rate of change of hydrazine in the loop subsystem within the target time period based on the amount of hydrazine change and the time range corresponding to the target time period.

[0083] The frequency determination unit is used to determine the second output frequency of the hydrazine metering pump based on the hydrazine change rate and the update mapping relationship between the hydrazine change rate and the output frequency update value; wherein, the update mapping relationship corresponding to the loop subsystem is different for different loop subsystems.

[0084] Optionally, the frequency determination unit can be specifically used for:

[0085] If the real-time hydrazine concentration of the loop subsystem is within the target hydrazine concentration range corresponding to the loop subsystem, the output frequency of the hydrazine metering pump corresponding to the loop subsystem will not be updated.

[0086] If the real-time hydrazine concentration of the loop subsystem is greater than the target hydrazine concentration range corresponding to the loop subsystem, then the target frequency update value corresponding to the hydrazine change rate in the update mapping relationship is updated, and the target frequency update value is reduced based on the standard output frequency of the hydrazine metering pump corresponding to the loop subsystem, as the second output frequency.

[0087] If the real-time hydrazine concentration of the loop subsystem is less than the target hydrazine concentration range corresponding to the loop subsystem, then the target frequency update value corresponding to the hydrazine change rate in the update mapping relationship is updated, and the target frequency update value is added to the standard output frequency of the hydrazine metering pump corresponding to the loop subsystem as the second output frequency.

[0088] Optionally, the target hydrazine concentration range and standard output frequency may differ depending on the circuit subsystem.

[0089] Optionally, the device further includes: a solution preparation module, the solution preparation module comprising:

[0090] The first mixing unit is used to determine the first target volume of standard ammonia solution and the second target volume of demineralized water based on the first target solution concentration, the initial liquid level of the ammonia solution tank to be mixed, and the first target liquid level; and to add the first target volume of standard ammonia solution and the second target volume of demineralized water to the ammonia solution tank to be mixed sequentially according to the liquid level sensor installed in the ammonia solution tank to be mixed.

[0091] The second mixing unit is used to determine the third target volume of standard hydrazine solution and the fourth target volume of demineralized water based on the second target solution concentration, the initial liquid level of the hydrazine solution tank to be mixed, and the second target liquid level; and to add the third target volume of standard hydrazine solution and the fourth target volume of demineralized water to the hydrazine solution tank to be mixed sequentially according to the liquid level sensor installed in the hydrazine solution tank to be mixed.

[0092] Optionally, the initial liquid level of the ammonia solution tank or the hydrazine solution tank to be prepared refers to the liquid level in the solution tank when the dispensing valve of the ammonia solution tank or the hydrazine solution tank to be prepared is completely closed.

[0093] The water quality optimization device based on a two-loop circuit provided in this application can execute the water quality optimization method based on a two-loop circuit provided in any embodiment of this application, and has the corresponding functional modules and beneficial effects for executing each water quality optimization method based on a two-loop circuit.

[0094] According to embodiments of this application, this application also provides an electronic device, a readable storage medium, and a computer program product.

[0095] Example 5

[0096] Figure 5 This is a schematic diagram of the structure of an electronic device 510 implementing the two-loop-based water quality optimization method of this application embodiment. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), 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 application described and / or claimed herein.

[0097] like Figure 5As shown, the electronic device 510 includes at least one processor 511 and a memory, such as a read-only memory 512 or a random access memory 513, communicatively connected to the at least one processor 511. The memory stores computer programs executable by the at least one processor. The processor 511 can perform various appropriate actions and processes based on the computer program stored in the read-only memory 512 or loaded from storage unit 518 into the random access memory 513. The random access memory 513 can also store various programs and data required for the operation of the electronic device 510. The processor 511, read-only memory 512, and random access memory 513 are interconnected via a bus 514. An input / output interface 515 is also connected to the bus 514.

[0098] Multiple components in electronic device 510 are connected to input / output interface 515, including: input unit 516, such as keyboard, mouse, etc.; output unit 517, such as various types of monitors, speakers, etc.; storage unit 518, such as disk, optical disk, etc.; and communication unit 519, such as network card, modem, wireless transceiver, etc. Communication unit 519 allows electronic device 510 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0099] Processor 511 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 511 include, but are not limited to, central processing units, graphics processing units, various special-purpose artificial intelligence computing chips, various processors running machine learning model algorithms, digital signal processors, and any suitable processor, controller, microcontroller, etc. Processor 511 performs the various methods and processes described above, such as a two-loop-based water quality optimization method.

[0100] In some embodiments, the two-loop-based water quality optimization method can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 518. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 510 via read-only memory 512 and / or communication unit 519. When the computer program is loaded into random access memory 513 and executed by processor 511, one or more steps of the two-loop-based water quality optimization method described above can be performed. Alternatively, in other embodiments, processor 511 can be configured for the two-loop-based water quality optimization method by any other suitable means (e.g., by means of firmware).

[0101] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays, application-specific integrated circuits (ASICs), application-specific standard products (ASICs), systems-on-a-chip (SoCs), payload programmable logic devices, computer hardware, firmware, software, and / or combinations thereof. These various embodiments 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.

[0102] Computer programs used to implement the methods of this application may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable two-loop-based water quality optimization device, such that when executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0103] In the context of this application, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage 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. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory, read-only memory, erasable programmable read-only memory, optical fibers, portable compact disk read-only memory, optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0104] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a cathode ray tube or liquid crystal display monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. 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).

[0105] 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 local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0106] A computing system 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. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product within the cloud computing service system to address the shortcomings of traditional physical hosts and virtual private servers, such as high management difficulty and weak business scalability.

[0107] 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 application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0108] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. 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 application should be included within the scope of protection of this application.

Claims

1. A water quality optimization method based on a two-loop system, characterized in that, include: Based on ammonia concentration sensors and hydrazine concentration sensors, the ammonia concentration and hydrazine concentration of at least one loop subsystem in the secondary loop system are collected in real time. Based on the real-time ammonia concentration or real-time hydrazine concentration in the loop subsystem and the system type of the loop subsystem, the output frequency of the ammonia metering pump or hydrazine metering pump in the secondary loop system is adjusted in real time to generate a first output frequency or a second output frequency. The water quality of the secondary loop system is optimized by controlling the ammonia solution output rate of the ammonia solution tank in the secondary loop system based on the first output frequency and the hydrazine solution output rate of the hydrazine solution tank in the secondary loop system based on the second output frequency. The step of adjusting the output frequencies of the ammonia metering pump and the hydrazine metering pump in the secondary loop system in real time, based on the real-time ammonia concentration and the real-time hydrazine concentration in the loop subsystem, and the system type of the loop subsystem, to generate a first output frequency and a second output frequency, includes: Based on the hydrazine concentration sensors deployed in the loop subsystem, determine the change in hydrazine concentration in the loop subsystem during the target time period; Based on the change in hydrazine and the time range corresponding to the target time period, determine the rate of change of hydrazine in the loop subsystem within the target time period; Based on the hydrazine change rate and the update mapping relationship between the hydrazine change rate and the output frequency update value, the second output frequency of the hydrazine metering pump is determined; wherein, different loop subsystems result in different update mapping relationships for the corresponding loop subsystems, and the target hydrazine concentration range and standard output frequency for the corresponding loop subsystems are also different.

2. The method according to claim 1, characterized in that, The determination of the second output frequency of the hydrazine metering pump based on the hydrazine change rate and the updated mapping relationship between the hydrazine change rate and the output frequency includes: If the real-time hydrazine concentration of the loop subsystem is within the target hydrazine concentration range corresponding to the loop subsystem, the output frequency of the hydrazine metering pump corresponding to the loop subsystem will not be updated. If the real-time hydrazine concentration of the loop subsystem is greater than the target hydrazine concentration range corresponding to the loop subsystem, then the target frequency update value corresponding to the hydrazine change rate in the update mapping relationship is updated, and the target frequency update value is reduced based on the standard output frequency of the hydrazine metering pump corresponding to the loop subsystem, as the second output frequency. If the real-time hydrazine concentration of the loop subsystem is less than the target hydrazine concentration range corresponding to the loop subsystem, then the target frequency update value corresponding to the hydrazine change rate in the update mapping relationship is updated, and the target frequency update value is added to the standard output frequency of the hydrazine metering pump corresponding to the loop subsystem as the second output frequency.

3. The method according to claim 1, characterized in that, The process of adjusting the solution concentration in the ammonia solution tank and the hydrazine solution tank includes: Based on the concentration of the first target solution, the initial liquid level and the first target liquid level of the ammonia solution tank to be prepared, the standard ammonia solution of the first target volume and the demineralized water of the second target volume are determined. Based on the liquid level sensor installed in the ammonia solution tank to be prepared, a first target volume of standard ammonia solution and a second target volume of demineralized water are added to the ammonia solution tank to be prepared in sequence. Based on the second target solution concentration, the initial liquid level and the second target liquid level of the hydrazine solution tank to be prepared, the third target volume of standard hydrazine solution and the fourth target volume of demineralized water are determined. Based on the liquid level sensor installed in the hydrazine solution tank to be prepared, a third target volume of standard hydrazine solution and a fourth target volume of demineralized water are added to the hydrazine solution tank to be prepared in sequence.

4. The method according to claim 3, characterized in that, The initial liquid level of the ammonia solution tank or hydrazine solution tank to be prepared refers to the liquid level in the tank when the dispensing valve of the ammonia solution tank or hydrazine solution tank to be prepared is completely closed.

5. A water quality optimization device based on a dual-loop circuit, characterized in that, include: The concentration acquisition module is used to acquire the ammonia concentration and hydrazine concentration in real time from at least one loop subsystem in the secondary loop system based on the ammonia concentration sensor and the hydrazine concentration sensor. The frequency determination module is used to adjust the output frequency of the ammonia metering pump or the hydrazine metering pump in the secondary loop system in real time according to the real-time ammonia concentration or real-time hydrazine concentration in the loop subsystem and the system type of the loop subsystem, respectively, to generate a first output frequency or a second output frequency. The water quality optimization module is used to control the ammonia solution output rate of the ammonia solution tank in the secondary loop system based on the first output frequency, and to control the hydrazine solution output rate of the hydrazine solution tank in the secondary loop system based on the second output frequency, so as to optimize the water quality of the secondary loop system. The frequency determination module includes: The change determination unit is used to determine the change in hydrazine concentration in the loop subsystem within a target time period based on the hydrazine concentration sensors deployed in the loop subsystem. The rate of change determination unit is used to determine the rate of change of hydrazine in the loop subsystem within the target time period based on the amount of hydrazine change and the time range corresponding to the target time period. The frequency determination unit is used to determine the second output frequency of the hydrazine metering pump based on the hydrazine change rate and the update mapping relationship between the hydrazine change rate and the output frequency update value; wherein, different loop subsystems result in different update mapping relationships for the corresponding loop subsystems, and the target hydrazine concentration range and standard output frequency for the corresponding loop subsystems are also different.

6. An electronic device, characterized in that, include: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the water quality optimization method based on a two-loop system as described in any one of claims 1-4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the water quality optimization method based on a two-loop system as described in any one of claims 1-4.

8. A computer program product comprising a computer program that, when executed by a processor, implements the water quality optimization method based on a two-loop system according to any one of claims 1-4.

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