Method, system, device and medium for controlling cooling louvers

Abstract

The application discloses a control method, a control system, a control device and a medium for cooling a cooling triangle, relates to the technical field of indirect air cooling, and obtains current flow rates of circulating water in each tube bundle detected by a water flow sensor in the cooling triangle, current temperatures of the circulating water in each tube bundle detected by a temperature sensor, and data of factors affecting heat dissipation efficiency of the cooling triangle; if the current flow rate is lower than a flow rate threshold value and / or the current temperature is lower than a temperature threshold value, an opening degree coefficient of a louver window of the cooling triangle is calculated according to the current flow rate, the current temperature and the data of the factors affecting the heat dissipation efficiency; the target opening degree of the louver window of the cooling triangle is determined according to the opening degree coefficient, and the opening degree of the louver window is reduced to the target opening degree in the next control cycle; so that the opening degree of the louver window can be actively reduced when the current flow rate and / or the current temperature is low, the ventilation volume is reduced, the heat loss is reduced, the freezing of the circulating water is effectively prevented, and reliable anti-freezing protection of the cooling triangle is realized.

Description

Technical Field

[0001] This application relates to the field of indirect air cooling technology, and in particular to a control method, control system, control device and medium for cooling triangular louvers. Background Technology

[0002] An indirect air-cooled tower (or simply indirect cooling tower) is a cooling device installed in thermal power units to cool the exhaust steam discharged from the turbine to the condenser after it has finished working. Most of these are natural draft cooling towers. To cool the exhaust steam in the condenser, indirect cooling units use circulating water as an intermediate medium. The circulating water cools the turbine exhaust steam at the condenser. The heated circulating water is then carried by a circulating water pump to the cooling triangle of the indirect cooling tower sector, where it exchanges heat with the cold air flowing from the bottom to the top of the tower through the cooling triangle, cooling the circulating water in the pipes. The cooled circulating water then returns to the condenser to begin the next heat exchange cycle.

[0003] The cooling triangle is placed vertically at the bottom of the indirect air-cooled tower and consists of two sets of heat dissipation surfaces and a set of louvers. During power generation, the circulating water heated by the indirect air-cooled generator enters the cooling triangle via a circulating water pump. Under the natural draft of the cooling tower, it exchanges heat with the cold air within the transverse finned tube bundles on the heat dissipation surfaces. The circulating water transfers heat to the air, cools it down, and returns to the condenser for the next heat exchange cycle. Because foreign objects such as scale, impurities, or biological contamination can easily enter the cooling triangle during installation and use, and these foreign objects are extremely difficult to detect, they can significantly reduce the flow rate of the circulating water. In cold environments, stagnant circulating water cannot carry away heat through continuous flow, causing the local temperature to drop rapidly below freezing. The expansion of the frozen circulating water causes localized stress concentration on the tube walls, especially in weak areas such as welds or elbows, ultimately leading to tube bundle rupture and posing a safety hazard to the indirect air-cooled tower and the generator set.

[0004] Therefore, how to effectively prevent circulating water from freezing in order to achieve antifreeze protection for the cooling triangle is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a control method, control system, control device, and medium for cooling triangular louvers, which solves the problem that stagnant circulating water in cold environments cannot remove heat through continuous flow, causing the local temperature to drop rapidly below freezing point, and the circulating water to freeze, leading to pipe rupture.

[0006] To solve the above-mentioned technical problems, this application provides a control method for cooling triangular louvers, including:

[0007] The current flow rate of circulating water in each tube bundle detected by the water flow sensor and the current temperature of circulating water in each tube bundle detected by the temperature sensor are obtained, as well as the data on factors affecting the heat dissipation performance of the cooling triangle are obtained; wherein, the data on factors affecting the heat dissipation performance include ambient temperature, ambient wind speed, ambient wind direction, target water temperature of the sector cold water header and actual water temperature of the sector cold water header.

[0008] If the current flow rate is lower than the flow rate threshold and / or the current temperature is lower than the temperature threshold, the opening coefficient of the cooling triangular louver is calculated based on the current flow rate, the current temperature and the data on factors affecting heat dissipation efficiency.

[0009] The target opening of the cooling triangular louver is determined based on the opening coefficient, and the opening of the louver is reduced to the target opening in the next control cycle.

[0010] In one optional embodiment, the opening coefficient of the cooling triangular louver is calculated based on the current flow rate, the current temperature, and the data on factors affecting heat dissipation efficiency, including:

[0011] The current flow rate of each tube bundle is calculated based on the current flow velocity and the cross-sectional area of ​​the tube bundle;

[0012] The average flow rate of the tube bundle is calculated based on the circulating pump power, power flow coefficient, and the number of tube bundles in the cooling triangle.

[0013] The flow error of each tube bundle is determined based on the current flow rate and the average flow rate of the tube bundle, and the mean square error of the cooling triangle flow rate is determined based on the flow error of each tube bundle.

[0014] The tube bundle velocity coefficient is determined based on the mean square error of the cooling triangle flow rate and the velocity coefficient.

[0015] Calculate the average flow velocity of each tube bundle based on the current flow velocity of the circulating water in each tube bundle, and determine the minimum flow rate among the current flow rates of each tube bundle.

[0016] The opening coefficient is calculated based on the data of factors affecting heat dissipation efficiency, the average flow velocity of the tube bundle, the minimum flow rate, the temperature coefficient, the wind speed coefficient, the louver position coefficient, the water temperature coefficient, the tube bundle flow velocity coefficient, and the tube bundle flow rate coefficient.

[0017] In one optional embodiment, calculating the current flow rate of each tube bundle based on the current flow velocity and the tube bundle cross-sectional area includes:

[0018] The current flow rate of each tube bundle is calculated according to the first preset formula;

[0019] The first preset formula is: ;

[0020] Wherein, F1 is the current flow rate, A is the cross-sectional area of ​​the tube bundle, and S1 is the current flow velocity.

[0021] In one optional embodiment, the average flow rate of the tube bundle is calculated based on the circulating pump power, the power flow coefficient, and the number of tube bundles in the cooling triangle, including:

[0022] The average flow rate of the tube bundle is calculated according to the second preset formula;

[0023] The second preset formula is: ;

[0024] Wherein, F3 is the average flow rate of the tube bundle, E2 is the power of the circulating pump, K7 is the power-flow coefficient, and N is the number of tube bundles.

[0025] In one optional embodiment, determining the tube bundle velocity coefficient based on the mean square error of the cooling triangle flow rate and the velocity coefficient includes:

[0026] The tube bundle velocity coefficient is calculated according to the third preset formula;

[0027] The third preset formula is: ;

[0028] Wherein, C is the tube bundle velocity coefficient, V is the cooling triangle flow rate mean square error, and K8 is the velocity coefficient.

[0029] In an optional embodiment, the opening coefficient is calculated based on the heat dissipation performance influencing factor data, the average flow velocity of the tube bundle, the minimum flow rate, the temperature coefficient, the wind speed coefficient, the louver position coefficient, the water temperature coefficient, the tube bundle flow velocity coefficient, and the tube bundle flow rate coefficient, including:

[0030] The opening coefficient is calculated according to the fourth preset formula;

[0031] The fourth preset formula is: ;

[0032] Wherein, K1 is the opening coefficient, T3 is the ambient temperature, K2 is the temperature coefficient, S2 is the ambient wind speed, K3 is the wind speed coefficient, D2 is the ambient wind direction, K4 is the louver position coefficient, T1 is the target water temperature of the sector cold water header, T2 is the actual water temperature of the sector cold water header, K5 is the water temperature coefficient, S3 is the average flow velocity of the tube bundle, C is the flow velocity coefficient of the tube bundle, F2 is the minimum flow rate, and K6 is the flow rate coefficient of the tube bundle.

[0033] This application also provides a control system for cooling triangular louvers, including: multiple water flow sensors, multiple temperature sensors, environmental monitoring equipment, and data processing equipment;

[0034] Both the water flow sensor and the temperature sensor are mounted on the tube bundle of the cooling triangle. The environmental monitoring device is used to detect the ambient temperature, ambient wind speed, and ambient wind direction. The data processing device is connected to the water flow sensor, the temperature sensor, and the actuator of the cooling triangle louver. The data processing device is used to execute the steps of the control method for the cooling triangle louver.

[0035] In one optional embodiment, the data processing device includes a server, a gateway, and a DCS, the water flow sensor is a Hall effect flow meter, the server is connected to the gateway and the DCS respectively, the gateway is connected to the Hall effect flow meter and the temperature sensor respectively, and the DCS is connected to the actuator.

[0036] This application also provides a control device for cooling triangular louvers, including a memory for storing computer programs;

[0037] A processor is used to implement the steps of the control method for the cooling triangular louvers when executing the computer program.

[0038] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the control method for cooling triangular louvers.

[0039] The present application provides a control method for a cooling triangular louver, comprising: acquiring the current flow rate of circulating water in each tube bundle detected by a water flow sensor and the current temperature of circulating water in each tube bundle detected by a temperature sensor, and acquiring data on factors affecting the heat dissipation performance of the cooling triangle; wherein, the data on factors affecting the heat dissipation performance includes ambient temperature, ambient wind speed, ambient wind direction, target water temperature of the sector's cold water header, and actual water temperature of the sector's cold water header; if the current flow rate is lower than a flow rate threshold and / or the current temperature is lower than a temperature threshold, calculating the opening coefficient of the cooling triangular louver based on the current flow rate, current temperature, and data on factors affecting the heat dissipation performance; determining the target opening of the cooling triangular louver based on the opening coefficient, and reducing the opening of the louver to the target opening in the next control cycle. By monitoring the current flow rate and temperature of the circulating water in each tube bundle, and combining the ambient temperature, ambient wind speed, ambient wind direction, target water temperature of the sector's cooling water header, and actual water temperature of the sector's cooling water header, the louver opening coefficient can be dynamically calculated. This allows for the proactive reduction of the louver opening when the current flow rate and / or current temperature are low, thereby reducing ventilation volume, minimizing heat loss, effectively preventing circulating water from freezing, and achieving reliable antifreeze protection for the cooling triangle. This effectively avoids any safety impact on the indirect cooling tower and generator set.

[0040] In addition, the opening coefficient of the cooling triangular louver is calculated based on the current flow rate, current temperature and heat dissipation efficiency influencing factors; the target opening of the cooling triangular louver is determined based on the opening coefficient. Compared with adjusting the louver opening based on manual experience, this can effectively avoid the situation where the louver opening is reduced too much or too little, and achieve precise quantitative control of the louver opening.

[0041] The beneficial effects and methods of the control system, control device and medium for cooling triangular louvers provided in this application are as described above. Attached Figure Description

[0042] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 A flowchart illustrating a control method for cooling triangular louvers provided in this application embodiment;

[0044] Figure 2 A structural diagram of a control system for a cooling triangular louver provided in an embodiment of this application;

[0045] Figure 3 This is a structural diagram of a control device for cooling triangular louvers provided in an embodiment of this application.

[0046] The attached diagram is labeled as follows: 1-Cooling triangle, 2-Sensor assembly, 3-Data acquisition cable, 4-Gateway, 5-Server, 6-Distributed control system, 7-Actuator. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0048] The core of this application is to provide a control method, control system, control device, and medium for cooling triangular louvers, which effectively prevents circulating water from freezing to achieve antifreeze protection for the cooling triangle, and effectively avoids safety impacts on the indirect cooling tower and generator set.

[0049] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] Figure 1 A flowchart of a control method for cooling triangular louvers provided in this application embodiment is shown below. Figure 1 As shown, a method for controlling a cooling triangular louver, applied to an indirect air-cooled tower, includes:

[0051] S10: Obtain the current flow rate of circulating water in each tube bundle detected by the water flow sensor and the current temperature of circulating water in each tube bundle detected by the temperature sensor, and obtain the data on the factors affecting the heat dissipation performance of the cooling triangle; among which, the data on the factors affecting the heat dissipation performance include ambient temperature, ambient wind speed, ambient wind direction, target water temperature of the sector cold water header and actual water temperature of the sector cold water header.

[0052] S11: If the current flow rate is lower than the flow rate threshold and / or the current temperature is lower than the temperature threshold, calculate the opening coefficient of the cooling triangular louver based on the current flow rate, current temperature and heat dissipation efficiency influencing factor data.

[0053] S12: Determine the target opening of the cooling triangular louver based on the opening coefficient, and reduce the opening of the louver to the target opening in the next control cycle.

[0054] In step S10, the cooling triangle consists of two sets of heat dissipation surfaces and a set of louvers. Each set of heat dissipation surfaces is composed of multiple tube bundles, and each sector contains multiple cooling triangles. Each sector is equipped with a sector cold water header, and the sector cold water header is connected to each tube bundle in the cooling triangle through branch pipes.

[0055] In step S11, if the current flow rate is lower than the flow rate threshold and / or the current temperature is lower than the temperature threshold, it indicates that there is a risk of circulating water freezing in a cold environment. At this time, it is necessary to reduce the opening of the louvers, reduce the amount of cold air entering, increase the water temperature in the tube bundle, and prevent freezing.

[0056] The calculation of the opening coefficient of the cooling triangle louvers based on current flow velocity, current temperature, and data on factors affecting heat dissipation efficiency includes: calculating the current flow rate of each tube bundle based on the current flow velocity and tube bundle cross-sectional area; calculating the average flow rate of the tube bundle based on the circulating pump power, power-flow coefficient, and the number of tube bundles in the cooling triangle; determining the flow error of each tube bundle based on the current flow rate and the average flow rate of the tube bundle, and determining the standard deviation of the cooling triangle flow rate based on the flow error of each tube bundle; determining the tube bundle flow velocity coefficient based on the standard deviation of the cooling triangle flow rate and the flow velocity coefficient; calculating the average flow velocity of the tube bundle based on the current flow velocity of the circulating water in each tube bundle, and determining the minimum flow rate among the current flow rates of each tube bundle; and calculating the opening coefficient based on data on factors affecting heat dissipation efficiency, average tube bundle flow velocity, minimum flow rate, temperature coefficient, wind speed coefficient, louver position coefficient, water temperature coefficient, tube bundle flow velocity coefficient, and tube bundle flow coefficient.

[0057] The current flow rate of each tube bundle is calculated based on the current flow velocity and the cross-sectional area of ​​the tube bundle, including: calculating the current flow rate of each tube bundle according to a first preset formula; the first preset formula is: Where F1 is the current flow rate, A is the tube bundle cross-sectional area, and S1 is the current flow velocity. The formula for calculating the tube bundle cross-sectional area A is: D1 is the inner diameter of the tube bundle.

[0058] The calculation of the average flow rate of the tube bundle based on the circulating pump power, power flow coefficient, and the number of tube bundles in the cooling triangle specifically includes: calculating the average flow rate of the tube bundle according to a second preset formula; the second preset formula is: Where F3 is the average flow rate of the tube bundle, E2 is the power of the circulating pump, K7 is the power-flow coefficient, and N is the number of tube bundles.

[0059] The formula for calculating the flow error of each tube bundle based on the current flow rate and the average flow rate of the tube bundle is: E1 = F3 – F1, where E1 is the flow error, F3 is the average flow rate of the tube bundle, and F1 is the current flow rate. The specific calculation formula for the root mean square error of the cooling triangle flow rate based on the flow error of each tube bundle can be based on existing formulas for calculating root mean square errors, which will not be elaborated here.

[0060] The tube bundle velocity coefficient is determined based on the mean square error of the cooling triangle flow rate and the velocity coefficient, including: calculating the tube bundle velocity coefficient according to the third preset formula; the third preset formula is: Where C is the tube bundle velocity coefficient, V is the mean square error of the cooling triangle flow rate, and K8 is the velocity coefficient.

[0061] The opening coefficient is calculated based on data on factors affecting heat dissipation efficiency, average tube bundle velocity, minimum flow rate, temperature coefficient, wind speed coefficient, louver position coefficient, water temperature coefficient, tube bundle velocity coefficient, and tube bundle flow rate coefficient. This includes calculating the opening coefficient according to the fourth preset formula; the fourth preset formula is: Wherein, K1 is the opening coefficient, T3 is the ambient temperature, K2 is the temperature coefficient, S2 is the ambient wind speed, K3 is the wind speed coefficient, D2 is the ambient wind direction, K4 is the louver position coefficient, T1 is the target water temperature of the sector's cold water header, T2 is the actual water temperature of the sector's cold water header, K5 is the water temperature coefficient, S3 is the average flow velocity of the tube bundle, C is the flow velocity coefficient of the tube bundle, F2 is the minimum flow rate, and K6 is the flow rate coefficient of the tube bundle.

[0062] In step S12, regarding how to determine the target opening of the cooling triangular louver based on the opening coefficient, specifically: a preset relationship table can be called, and the target opening corresponding to the opening coefficient can be determined based on the preset relationship table; wherein, the preset relationship table includes the correspondence between the opening coefficient and the louver opening.

[0063] When the current flow rate is below the flow rate threshold and / or the current temperature is below the temperature threshold, the opening of the louvers is reduced to the target opening in the next control cycle. This reduces the amount of cold air entering the tube bundle, increases the water temperature, and prevents freezing. Furthermore, if the current temperature is above the temperature threshold, the opening coefficient of the cooling triangular louvers can be calculated based on the current flow rate, current temperature, and data on factors affecting heat dissipation efficiency. The target opening of the cooling triangular louvers is then determined based on this coefficient, and the opening is increased to the target opening in the next control cycle to increase heat dissipation and rapidly cool the circulating water.

[0064] The present application provides a control method for a cooling triangular louver, comprising: acquiring the current flow rate of circulating water in each tube bundle detected by a water flow sensor and the current temperature of circulating water in each tube bundle detected by a temperature sensor, and acquiring data on factors affecting the heat dissipation performance of the cooling triangle; wherein, the data on factors affecting the heat dissipation performance includes ambient temperature, ambient wind speed, ambient wind direction, target water temperature of the sector's cold water header, and actual water temperature of the sector's cold water header; if the current flow rate is lower than a flow rate threshold and / or the current temperature is lower than a temperature threshold, calculating the opening coefficient of the cooling triangular louver based on the current flow rate, current temperature, and data on factors affecting the heat dissipation performance; determining the target opening of the cooling triangular louver based on the opening coefficient, and reducing the opening of the louver to the target opening in the next control cycle. By monitoring the current flow rate and temperature of the circulating water in each tube bundle, and combining the ambient temperature, ambient wind speed, ambient wind direction, target water temperature of the sector's cooling water header, and actual water temperature of the sector's cooling water header, the louver opening coefficient can be dynamically calculated. This allows for the proactive reduction of the louver opening when the current flow rate and / or current temperature are low, thereby reducing ventilation volume, minimizing heat loss, effectively preventing circulating water from freezing, and achieving reliable antifreeze protection for the cooling triangle. This effectively avoids safety impacts on the indirect cooling tower and generator set, improving the safety and reliability of the indirect cooling tower operation.

[0065] In addition, the opening coefficient of the cooling triangular louver is calculated based on the current flow rate, current temperature and heat dissipation efficiency influencing factors; the target opening of the cooling triangular louver is determined based on the opening coefficient. Compared with adjusting the louver opening based on manual experience, this can effectively avoid the situation where the louver opening is reduced too much or too little, and achieve precise quantitative control of the louver opening.

[0066] Figure 2 A structural diagram of a control system for a cooling triangular louver provided in an embodiment of this application is shown below. Figure 2As shown, a control system for a cooling triangular louver includes: multiple water flow sensors, multiple temperature sensors, an environmental monitoring device, and a data processing device; the water flow sensors and temperature sensors are both installed on the tube bundle of the cooling triangle 1; the environmental monitoring device is used to detect the ambient temperature, ambient wind speed, and ambient wind direction; the data processing device is connected to the water flow sensors, temperature sensors, and the actuator 7 of the cooling triangle 1 louver, and is used to execute the steps of the control method for the cooling triangle 1 louver described above.

[0067] In the embodiments of this application, Figure 2 Sensor component 2 integrates a water flow sensor and a temperature sensor. The data processing equipment includes a server 5, a gateway 4, and a distributed control system (DCS). The water flow sensor is a Hall effect flow meter. Server 5 is connected to both gateway 4 and the DCS. Gateway 4 is connected to both the Hall effect flow meter and the temperature sensor. The DCS is connected to actuator 7. Gateway 4 is connected to sensor component 2 via data acquisition cable 3. Actuator 7 can be a motor that drives the louvers. The environmental monitoring equipment can be a weather station, located outside the cooling tower, which can accurately reflect the environmental conditions around the tower. By installing water flow sensors and temperature sensors on each tube bundle of the cooling triangle 1, the flow rate and temperature data within the tube bundle are collected in real time. The data is transmitted to the gateway 4 via the data acquisition cable 3. At the same time, the server system also obtains the target water temperature and actual water temperature of the sector cold water header from the DCS, as well as the ambient temperature, ambient wind speed, and ambient wind direction collected by the environmental monitoring equipment, and receives the data collected by the gateway 4. The server 5 calculates the target opening degree of the louvers according to the built-in control algorithm, outputs the target opening degree to the DCS, and drives the actuator 7 to adjust it, thereby achieving precise control of the louver opening degree of the cooling triangle 1 to achieve antifreeze protection.

[0068] Figure 3 A structural diagram of a control device for a cooling triangular louver provided in an embodiment of this application is shown below. Figure 3 As shown, the control device for cooling triangular louvers includes: a memory 20 for storing computer programs; and a processor 21 for executing the computer programs to implement the steps of the control method for cooling triangular louvers as described in the above embodiment.

[0069] The control device for the cooling triangular louvers provided in this embodiment may include, but is not limited to, smartphones, tablets, laptops, or desktop computers.

[0070] The processor 21 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 21 may be implemented using at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 21 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 21 may also include an Artificial Intelligence (AI) processor, which handles computational operations related to machine learning.

[0071] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 20 is used to store at least the following computer program 201, which, after being loaded and executed by the processor 21, is capable of implementing the relevant steps of the control method for the cooling triangular louvers disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, and the storage method may be temporary or permanent storage. The operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, current flow rate, current temperature, and data on factors affecting heat dissipation efficiency.

[0072] In some embodiments, the control device for cooling triangular louvers may further include a display screen 22, an input / output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.

[0073] Those skilled in the art will understand that Figure 3 The structure shown does not constitute a limitation on the control device for cooling triangular louvers and may include more or fewer components than shown.

[0074] The control device for the cooling triangular louver provided in this application embodiment includes a memory and a processor. When the processor executes the program stored in the memory, it can implement the following method: acquiring the current flow rate of the circulating water in each tube bundle detected by the water flow sensor in the cooling triangle and the current temperature of the circulating water in each tube bundle detected by the temperature sensor, and acquiring data on the heat dissipation performance influencing factors of the cooling triangle; wherein, the data on the heat dissipation performance influencing factors includes ambient temperature, ambient wind speed, ambient wind direction, target water temperature of the sector cold water header and actual water temperature of the sector cold water header; if the current flow rate is lower than the flow rate threshold and / or the current temperature is lower than the temperature threshold, calculating the opening coefficient of the cooling triangular louver based on the current flow rate, current temperature and heat dissipation performance influencing factor data; determining the target opening of the cooling triangular louver based on the opening coefficient, and reducing the opening of the louver to the target opening in the next control cycle.

[0075] Finally, this application also provides an embodiment corresponding to a computer-readable storage medium. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps described in the control method for cooling triangular louvers as described in the above method embodiment.

[0076] It is understood that if the methods in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0077] The control method, control system, control device, and medium for the cooling triangular louver provided in this application have been described in detail above. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0078] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for controlling the cooling of triangular louvers, characterized in that, include: The current flow rate of circulating water in each tube bundle detected by the water flow sensor and the current temperature of circulating water in each tube bundle detected by the temperature sensor are obtained, as well as the data on factors affecting the heat dissipation performance of the cooling triangle are obtained; wherein, the data on factors affecting the heat dissipation performance include ambient temperature, ambient wind speed, ambient wind direction, target water temperature of the sector cold water header and actual water temperature of the sector cold water header. If the current flow rate is lower than the flow rate threshold and / or the current temperature is lower than the temperature threshold, the opening coefficient of the cooling triangular louver is calculated based on the current flow rate, the current temperature and the data on factors affecting heat dissipation efficiency. The target opening of the cooling triangular louver is determined based on the opening coefficient, and the opening of the louver is reduced to the target opening in the next control cycle. The opening coefficient of the cooling triangular louvers is calculated based on the current flow rate, the current temperature, and the data on factors affecting heat dissipation efficiency, including: The current flow rate of each tube bundle is calculated based on the current flow velocity and the cross-sectional area of ​​the tube bundle; The average flow rate of the tube bundle is calculated based on the circulating pump power, power flow coefficient, and the number of tube bundles in the cooling triangle. The flow error of each tube bundle is determined based on the current flow rate and the average flow rate of the tube bundle, and the mean square error of the cooling triangle flow rate is determined based on the flow error of each tube bundle. The tube bundle velocity coefficient is determined based on the mean square error of the cooling triangle flow rate and the velocity coefficient. Calculate the average flow velocity of each tube bundle based on the current flow velocity of the circulating water in each tube bundle, and determine the minimum flow rate among the current flow rates of each tube bundle. The opening coefficient is calculated based on the data of factors affecting heat dissipation efficiency, the average flow velocity of the tube bundle, the minimum flow rate, the temperature coefficient, the wind speed coefficient, the louver position coefficient, the water temperature coefficient, the tube bundle flow velocity coefficient, and the tube bundle flow rate coefficient.

2. The control method for cooling triangular louvers according to claim 1, characterized in that, The current flow rate of each tube bundle is calculated based on the current flow velocity and the cross-sectional area of ​​the tube bundle, including: The current flow rate of each tube bundle is calculated according to the first preset formula; The first preset formula is: ; Wherein, F1 is the current flow rate, A is the cross-sectional area of ​​the tube bundle, and S1 is the current flow velocity.

3. The control method for cooling triangular louvers according to claim 1, characterized in that, The average flow rate of the tube bundle is calculated based on the circulating pump power, power-flow coefficient, and the number of tubes in the cooling triangle, including: The average flow rate of the tube bundle is calculated according to the second preset formula; The second preset formula is: ; Wherein, F3 is the average flow rate of the tube bundle, E2 is the power of the circulating pump, K7 is the power-flow coefficient, and N is the number of tube bundles.

4. The control method for cooling triangular louvers according to claim 1, characterized in that, The tube bundle velocity coefficient is determined based on the mean square error of the cooling triangle flow rate and the velocity coefficient, including: The tube bundle velocity coefficient is calculated according to the third preset formula; The third preset formula is: ; Wherein, C is the tube bundle velocity coefficient, V is the cooling triangle flow rate mean square error, and K8 is the velocity coefficient.

5. The control method for cooling triangular louvers according to claim 1, characterized in that, The opening coefficient is calculated based on the data of factors affecting heat dissipation efficiency, the average flow velocity of the tube bundle, the minimum flow rate, the temperature coefficient, the wind speed coefficient, the louver position coefficient, the water temperature coefficient, the tube bundle flow velocity coefficient, and the tube bundle flow rate coefficient, including: The opening coefficient is calculated according to the fourth preset formula; The fourth preset formula is: ; Wherein, K1 is the opening coefficient, T3 is the ambient temperature, K2 is the temperature coefficient, S2 is the ambient wind speed, K3 is the wind speed coefficient, D2 is the ambient wind direction, K4 is the louver position coefficient, T1 is the target water temperature of the sector cold water header, T2 is the actual water temperature of the sector cold water header, K5 is the water temperature coefficient, S3 is the average flow velocity of the tube bundle, C is the flow velocity coefficient of the tube bundle, F2 is the minimum flow rate, and K6 is the flow rate coefficient of the tube bundle.

6. A control system for cooling triangular louvers, characterized in that, include: Multiple water flow sensors, multiple temperature sensors, environmental monitoring equipment, and data processing equipment; Both the water flow sensor and the temperature sensor are mounted on the tube bundle of the cooling triangle. The environmental monitoring device is used to detect the ambient temperature, ambient wind speed, and ambient wind direction. The data processing device is connected to the water flow sensor, the temperature sensor, and the actuator of the cooling triangle louver. The data processing device is used to execute the steps of the control method for the cooling triangle louver according to any one of claims 1 to 5.

7. The control system for the cooling triangular louver according to claim 6, characterized in that, The data processing device includes a server, a gateway, and a DCS. The water flow sensor is a Hall effect flow meter. The server is connected to the gateway and the DCS. The gateway is connected to the Hall effect flow meter and the temperature sensor. The DCS is connected to the actuator.

8. A control device for cooling triangular louvers, characterized in that, Includes memory used to store computer programs; A processor, configured to execute the computer program to implement the steps of the control method for cooling triangular louvers as described in any one of claims 1 to 5.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the control method for cooling triangular louvers as described in any one of claims 1 to 5.

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