Cooling tower water temperature control method and device, electronic equipment and storage medium

Abstract

The invention discloses a cooling tower water temperature control method and device, electronic equipment and a storage medium. According to the main technical scheme, the method comprises the steps that the unit load, meteorological parameters and the circulating cooling water amount of an indirect air cooling tower are obtained; based on the unit load of the indirect air cooling tower, the meteorological parameters and the monitored parameters of the circulating cooling water amount, thermal performance calculation is carried out to determine the thermal state of the cooling tower; according to the thermal performance calculation result, the target opening degree of the louver is determined, and the louver is controlled according to the target opening degree. Compared with the prior art, according to the embodiment of the invention, the unit load, the meteorological parameters and the circulating cooling water parameters are monitored in real time, thermal performance calculation is combined, the opening degree of the louver is adjusted in time, it is ensured that the tower outlet water temperature meets the unit operation requirement, and by optimizing the opening degree of the louver, the energy consumption of the cooling tower can be reduced, and the operation cost is reduced. On the premise that the cooling effect is guaranteed, energy conservation and emission reduction are achieved, and the development concept of environmental protection is met.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cooling towers, and in particular to a method and device for controlling water temperature of a cooling tower, an electronic device, and a storage medium. Background Art

[0002] In cold winter weather conditions, the shutters prevent the water temperature in the base tube of the air-cooled radiator of the indirect air-cooling tower from being too low, causing the water temperature in the base tube to freeze and the base tube to rupture. Therefore, under certain unit load and weather conditions, a reasonable shutter opening not only directly affects the water temperature out of the indirect air-cooling tower, but also directly affects the economic efficiency of the power plant operation.

[0003] In winter, in order to prevent freezing and maintain the economical operation of the power plant, it is necessary to maintain the constant outlet water temperature of the cooling tower according to the changes in temperature and load in real time. The outlet water temperature changes in real time with the unit load and the external meteorological temperature. Therefore, how to keep the outlet water temperature stable has always been an urgent problem to be solved. Summary of the invention

[0004] The present invention provides a cooling tower water temperature control method, device, electronic device and storage medium, the main purpose of which is to achieve stable water temperature out of the tower.

[0005] According to a first aspect of the present disclosure, a method for controlling water temperature of a cooling tower is provided, comprising:

[0006] Obtain the unit load, meteorological parameters and circulating cooling water volume of the indirect air cooling tower;

[0007] Based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume, a thermal performance calculation is performed to determine the thermal state of the cooling tower;

[0008] According to the calculation result of the thermal performance, the target opening of the shutter is determined, and the shutter is controlled according to the target opening.

[0009] Optionally, after determining the target opening of the shutter according to the thermal performance calculation result and controlling the shutter according to the target opening, the method further includes:

[0010] When there is a data change in at least one of the unit load of the indirect air cooling tower and the meteorological parameter, the thermal performance calculation is re-performed and the shutter opening is determined.

[0011] Optionally, the step of obtaining the unit load, meteorological parameters and circulating cooling water volume of the indirect air cooling tower further includes:

[0012] Acquiring real-time meteorological parameters; wherein the meteorological parameters include at least one of temperature, humidity, and wind speed;

[0013] Get the real-time inlet temperature, outlet temperature and water flow of circulating cooling water.

[0014] Optionally, the thermal performance calculation based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume to determine the thermal state of the cooling tower includes:

[0015] Obtaining an initial shutter opening, and calculating a condenser heat load according to the initial shutter opening;

[0016] Calculate the inlet and outlet water temperature difference of the cooling tower based on the condenser heat load and circulating cooling water volume;

[0017] Iterative thermal calculation is performed according to the preset headwind speed and the preset tower water temperature until the calculation result of the preset tower water temperature converges; wherein, if the calculation result of the preset tower water temperature does not converge, the preset tower water temperature is reset;

[0018] Calculate the suction and resistance of the cooling tower, and determine the headwind speed based on the principle of suction and resistance balance;

[0019] It is determined whether the suction force and the resistance are converged, and when the suction force and the resistance are converged, the calculated tower outlet water temperature is output.

[0020] Optionally, determining a target opening of the shutter according to the thermal performance calculation result, and controlling the shutter according to the target opening further includes:

[0021] Calculate the water temperature out of the tower under different shutter openings, and establish the corresponding relationship between the shutter opening and the water temperature out of the tower;

[0022] According to the target out-tower water temperature, the target opening of the louver is determined by the corresponding relationship between the opening of the louver and the out-tower water temperature.

[0023] According to a second aspect of the present disclosure, a cooling tower water temperature control device is provided, comprising:

[0024] An acquisition unit, used to acquire the unit load, meteorological parameters and circulating cooling water volume of the indirect air cooling tower;

[0025] A first calculation unit is used to perform thermal performance calculation based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume to determine the thermal state of the cooling tower;

[0026] The determination unit is used to determine the target opening of the shutter according to the thermal performance calculation result, and control the shutter according to the target opening.

[0027] Optionally, the device further comprises:

[0028] The second calculation unit is used to recalculate the thermal performance and determine the shutter opening after the determination unit determines the target opening of the shutter according to the thermal performance calculation result and controls the shutter according to the target opening, when there is a data change in the unit load of the indirect air cooling tower and at least one of the meteorological parameters.

[0029] Optionally, the acquisition unit further includes:

[0030] Acquiring real-time meteorological parameters; wherein the meteorological parameters include at least one of temperature, humidity, and wind speed;

[0031] Get the real-time inlet temperature, outlet temperature and water flow of circulating cooling water.

[0032] Optionally, the first computing unit is further used for:

[0033] Obtaining an initial shutter opening, and calculating a condenser heat load according to the initial shutter opening;

[0034] Calculate the inlet and outlet water temperature difference of the cooling tower based on the condenser heat load and circulating cooling water volume;

[0035] Iterative thermal calculation is performed according to the preset headwind speed and the preset tower water temperature until the calculation result of the preset tower water temperature converges; wherein, if the calculation result of the preset tower water temperature does not converge, the preset tower water temperature is reset;

[0036] Calculate the draft and resistance of the cooling tower, and determine the headwind speed based on the draft and resistance balance principle;

[0037] It is determined whether the suction force and the resistance are converged, and when the suction force and the resistance are converged, the calculated tower outlet water temperature is output.

[0038] Optionally, the determining unit is further configured to:

[0039] Calculate the water temperature out of the tower under different shutter openings, and establish the corresponding relationship between the shutter opening and the water temperature out of the tower;

[0040] According to the target out-tower water temperature, the target opening of the louver is determined by the corresponding relationship between the opening of the louver and the out-tower water temperature.

[0041] According to a third aspect of the present disclosure, there is provided an electronic device, including:

[0042] at least one processor; and

[0043] a memory communicatively connected to the at least one processor; wherein,

[0044] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect.

[0045] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0046] According to a fifth aspect of the present disclosure, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the method as described in the first aspect above.

[0047] The present disclosure provides a method, device, electronic device and storage medium for controlling the water temperature of a cooling tower. The main technical solutions include: obtaining the unit load, meteorological parameters and circulating cooling water volume of an indirect air cooling tower; performing thermal performance calculations based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume to determine the thermal state of the cooling tower; determining the target opening of the shutters according to the results of the thermal performance calculations, and controlling the shutters according to the target opening. Compared with the related art, the embodiment of the present application timely adjusts the shutter opening by real-time monitoring of the unit load, meteorological parameters and circulating cooling water parameters, combined with thermal performance calculations, to ensure that the water temperature out of the tower meets the unit operation requirements, and by optimizing the shutter opening, the energy consumption of the cooling tower can be reduced, and the operating cost can be reduced. On the premise of ensuring the cooling effect, energy conservation and emission reduction are achieved, which is in line with the development concept of green environmental protection.

[0048] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0050] Figure 1 A schematic flow chart of a method for controlling water temperature of a cooling tower provided in an embodiment of the present disclosure;

[0051] Figure 2 A schematic flow chart of a method for controlling water temperature of a cooling tower provided in an embodiment of the present disclosure;

[0052] Figure 3 A flow chart of a method for controlling the outlet water temperature of an indirect air-cooling tower by adjusting the shutters provided in an embodiment of the present application;

[0053] Figure 4 A schematic diagram of the structure of a cooling tower water temperature control device provided in an embodiment of the present disclosure;

[0054] Figure 5 A schematic diagram of the structure of a cooling tower water temperature control device provided in an embodiment of the present disclosure;

[0055] Figure 6 A schematic block diagram of an exemplary electronic device provided for an embodiment of the present disclosure. DETAILED DESCRIPTION

[0056] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0057] The following describes a method, device, electronic device, and storage medium for controlling the water temperature of a cooling tower according to an embodiment of the present disclosure with reference to the accompanying drawings.

[0058] Figure 1 A schematic flow chart of a method for controlling water temperature in a cooling tower provided in an embodiment of the present disclosure.

[0059] like Figure 1 As shown, the method comprises the following steps:

[0060] Step 101, obtaining the unit load, meteorological parameters and circulating cooling water volume of the indirect air cooling tower.

[0061] In some embodiments, by integrating sensors and monitoring systems, the load information of the unit served by the indirect air-cooled cooling tower is obtained in real time, including but not limited to indicators such as the unit's electric power output, steam flow, thermal efficiency, etc. Through these data, the current working status and heat demand of the unit can be accurately understood.

[0062] In some embodiments, a weather station or remote weather monitoring equipment may be used to collect real-time environmental weather parameters at the location of the indirect air-cooled cooling tower, including ambient temperature, relative humidity, wind speed, wind direction, solar radiation intensity, etc.

[0063] In some embodiments, a flow meter and a temperature sensor are installed to monitor the flow and temperature of the circulating cooling water in real time. The flow of the circulating cooling water is a key factor affecting the heat exchange efficiency of the cooling tower, while the temperature is directly related to the outlet water temperature of the cooling tower.

[0064] Step 102, based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume, a thermal performance calculation is performed to determine the thermal state of the cooling tower.

[0065] Calculate the heat load of the condenser based on the unit load data obtained in real time. The condenser heat load is the heat that needs to be removed by the cooling tower. It is a key parameter that determines the operating status of the cooling tower. When calculating, factors such as the thermal efficiency of the unit, steam flow rate, and steam parameters are included. Calculate the heat exchange efficiency of the cooling tower using the flow and temperature data of the circulating cooling water combined with the condenser heat load. The calculation of the heat exchange efficiency may involve a heat exchange model of the cooling tower, which takes into account factors such as the geometric structure of the cooling tower, the characteristics of the packing, and the air mass flow rate. Combined with meteorological parameters, the thermal performance of the cooling tower is corrected.

[0066] In some embodiments, during calculation, a shutter opening can be preset, and thermal performance calculation is performed based on the preset shutter opening to obtain the final cooling water outlet water temperature to determine whether the temperature meets the preset value of the outlet water temperature.

[0067] Step 103, determining a target opening of the shutters according to the thermal performance calculation result, and controlling the shutters according to the target opening.

[0068] In some embodiments, the temperature of the water outlet is determined based on the thermal performance calculation results, and it is determined whether the temperature meets the preset water outlet temperature threshold. If it does, the shutter opening of the preset value is determined as the target opening. If the temperature does not meet the preset water outlet temperature threshold, the shutter opening is reset and the thermal performance calculation is performed again until the calculated water outlet temperature meets the preset water outlet temperature threshold.

[0069] The present disclosure provides a method for controlling the water temperature of a cooling tower, and the main technical solutions include: obtaining the unit load, meteorological parameters and circulating cooling water volume of an indirect air cooling tower; performing thermal performance calculations based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume to determine the thermal state of the cooling tower; determining the target opening of the shutters according to the results of the thermal performance calculations, and controlling the shutters according to the target opening. Compared with the related art, the embodiment of the present application timely adjusts the shutter opening by real-time monitoring of the unit load, meteorological parameters and circulating cooling water parameters, combined with thermal performance calculations, to ensure that the water temperature out of the tower meets the unit operation requirements, and by optimizing the shutter opening, the energy consumption of the cooling tower can be reduced, and the operating cost can be reduced. On the premise of ensuring the cooling effect, energy conservation and emission reduction are achieved, which is in line with the development concept of green environmental protection.

[0070] In some embodiments, after determining the target opening of the shutter according to the thermal performance calculation result and controlling the shutter according to the target opening, the method further includes:

[0071] When there is a data change in at least one of the unit load of the indirect air cooling tower and the meteorological parameter, the thermal performance calculation is re-performed and the shutter opening is determined.

[0072] In some embodiments, the unit load and meteorological parameters of the indirect air cooling tower may change frequently, so the present invention provides a dynamic adjustment mechanism for recalculating the thermal performance and determining the opening of the shutters when the data changes.

[0073] When at least one of the unit load or meteorological parameters is detected to have a change above a predetermined threshold, the system will trigger a recalculation of the thermal performance process.

[0074] Use the latest unit load and meteorological parameter data to re-run the thermal performance calculation model; based on the new calculation results, re-determine the target opening of the blinds. Finally, adjust the blinds opening according to the target opening.

[0075] Through closed-loop feedback, the system will continuously monitor the water temperature out of the tower and make fine adjustments based on the actual results to maintain the efficient operation of the cooling tower.

[0076] In some embodiments, the obtaining of the unit load, meteorological parameters and the circulating cooling water volume of the indirect air cooling tower further comprises:

[0077] Acquiring real-time meteorological parameters; wherein the meteorological parameters include at least one of temperature, humidity, and wind speed;

[0078] Get the real-time inlet temperature, outlet temperature and water flow of circulating cooling water.

[0079] In the method of the present invention, the acquisition of real-time meteorological parameters is achieved by collecting data from meteorological sensors installed near the indirect air cooling tower. These sensors can accurately measure at least one of the following meteorological parameters:

[0080] Temperature: Monitor the temperature of the ambient air in real time through the temperature sensor;

[0081] Humidity: The relative humidity of the air is obtained through the humidity sensor. Humidity will affect the evaporative cooling effect of the cooling tower;

[0082] Wind speed: The air flow speed is measured by the wind speed sensor. The change of wind speed will directly affect the heat dissipation capacity of the cooling tower.

[0083] Get real-time parameters of circulating cooling water:

[0084] The real-time parameters of circulating cooling water include inlet temperature, outlet temperature and water flow. The inlet and outlet temperatures of cooling water can be monitored in real time by installing temperature sensors on the circulating cooling water pipeline. These data are used to calculate the heat exchange capacity of the cooling tower.

[0085] The water flow sensor is installed on the circulating cooling water pipeline to measure the real-time flow of cooling water.

[0086] Using the collected data and the thermal performance model of the cooling tower, the heat exchange efficiency of the cooling tower is calculated;

[0087] Based on the calculation results, the outlet water temperature of the cooling tower is predicted under the current operating conditions; if changes in unit load or meteorological parameters are detected, the system will automatically recalculate the thermal performance to ensure that the cooling tower always operates in the best condition.

[0088] Through the above steps, the present invention can ensure that the indirect air cooling tower can achieve efficient heat exchange under various operating conditions, thereby accurately controlling the water temperature out of the tower, improving energy utilization efficiency, and extending the service life of the equipment.

[0089] See also Figure 2 , Figure 2 A schematic flow chart of a method for controlling water temperature of a cooling tower provided in an embodiment of the present disclosure includes:

[0090] Step 201, obtaining an initial shutter opening, and calculating a condenser heat load according to the initial shutter opening.

[0091] See also Figure 3 , Figure 3 A flow chart of a method for controlling the outlet water temperature of an indirect air cooling tower by adjusting the shutters provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the initial shutter opening is a hypothetical value, which can be set from a maximum value or a minimum value, such as 100% or 0%, or set according to an empirical value, and the embodiment of the present application is not limited to this.

[0092] The unit load, meteorological parameters and circulating cooling water volume are obtained in real time, and a shutter opening is assumed. According to the unit efficiency and unit load, the condenser heat load can be obtained.

[0093] Step 202, based on the condenser heat load and the circulating cooling water volume, calculate the inlet and outlet water temperature difference of the cooling tower.

[0094] According to the amount of circulating cooling water, the temperature difference between the water entering and leaving the cooling tower can be obtained. For the specific calculation method, please refer to any implementation method in the prior art, and the embodiments of the present application will not be described one by one here.

[0095] Step 203, performing iterative thermal calculation according to the preset headwind speed and the preset out-tower water temperature until the calculation result of the preset out-tower water temperature converges; wherein, if the calculation result of the preset out-tower water temperature does not converge, resetting the preset out-tower water temperature.

[0096] Initial temperature difference ITD

[0097] ITD=t s -θ 1 (4-1)

[0098] Where: t s ——Turbine exhaust temperature, °C; θ 1 ——Ambient air dry-bulb temperature, °C;

[0099] The temperature rise efficiency η of air refers to the ratio of the actual heat dissipation of the air condenser to the maximum heat dissipation, that is:

[0100]

[0101] Where: θ 2 ——Outlet air temperature, °C;

[0102] The average wind speed of the outside air passing through the windward side of the air-cooled radiator is V f Indicates; the number of heat transfer units is defined as the ratio of the temperature change of the fluid with the smaller heat capacity in the fluid to the average temperature difference of heat transfer, and its value is:

[0103]

[0104] Where: K——total heat transfer coefficient, W / (㎡.K); A——total heat transfer area, ㎡; L——air flow, Kg / s; C a ——Specific heat capacity of air, J / (Kg.℃);

[0105] Log mean temperature difference

[0106]

[0107] Where: t 1 ,t 2 ——Water temperature at inlet and outlet, ℃; θ 2 ——Outlet air temperature, °C;

[0108] The thermal characteristics and resistance characteristics of the radiator are related to its own material, type and model. Its thermal resistance characteristics are related to the mass flow rate on the windward surface of the radiator, which are generally given through experiments, as follows:

[0109] (1) Radiator thermal characteristic parameters

[0110]

[0111] Where: K - heat transfer coefficient based on the total heat transfer area of ​​the finned tube, W / (㎡.K); m f ——Mass flow rate on the windward side of the radiator, kg / (㎡.s); A, m——Thermal characteristic parameters of the radiator, obtained by experiment, should be multiplied by the correction factor in the calculation.

[0112] The thermal calculation formula of the indirect air cooling system is as follows:

[0113]

[0114] The gas-water equivalence ratio λ is as follows:

[0115]

[0116] Where: G——air mass flow, kg / s; W——circulating water volume, kg / s; C a ——Specific heat of air at constant pressure, J / (Kg.℃); C w ——Specific heat of water at constant pressure, J / (Kg.℃); t 1 ——Cooling tower water inlet temperature, °C;

[0117] t 2 ——Cooling tower water outlet temperature, ℃.

[0118] Step 204, calculate the suction and resistance of the cooling tower, and determine the headwind speed according to the suction and resistance balance principle.

[0119] Radiator resistance characteristic parameters:

[0120]

[0121] Where: Δp f ——Air resistance through the radiator, Pa; B,n——Test constant;

[0122] The calculation formula of the air cooling tower suction force is as follows:

[0123] DF=H e ×(ρ 1 -ρ 2 )×9.81 (4-9)

[0124] Where: DF——draft, Pa; H e ——The effective ventilation height of the tower, which is the height from the middle of the radiator to the top of the tower, m; ρ 1 ——tower inlet air density, kg / m3; ρ 2 ——Tower outlet air density, kg / m3.

[0125] The total resistance of the indirect air cooling system is composed of the sum of the resistances of each part. The total resistance coefficient expressed in terms of headwind speed is calculated as follows [6]:

[0126] RF=0.5×ρ×ξ×V 2 (4-10)

[0127]

[0128] Where: ρ is the average value of the inlet and outlet air density, kg / m3; ξ is the resistance coefficient of the whole tower; 1 ——Measured triangle drag coefficient; ε 1 ——Ratio of the windward surface area to the tower bottom area; ε 2 ——Ratio of the windward surface area to the tower outlet area;

[0129] If the resistance of each part of the air cooling tower is calculated separately, the calculation formula is as follows:

[0130] RF=1.1(1.12Δp f +Δp 1 )+Δp 0 (4-12)

[0131] Where: Δp 1 ——Shutter resistance, pa; Δp 1 =f(kd), kd is the shutter opening; Δp 0 ——Cooling tower outlet resistance, pa;

[0132]

[0133] Where: V 0 ——Air velocity at cooling tower outlet, m / s;

[0134] Step 205, determining whether the suction force and the resistance have converged, and in the case where the suction force and the resistance have converged, outputting the calculated tower outlet water temperature.

[0135] The calculated suction force and resistance values ​​are used to determine whether they have reached a convergence state. The convergence state means that the difference between the suction force and the resistance is less than the preset threshold. When the suction force and the resistance are judged to have converged, the calculated tower water temperature is output.

[0136] If the suction force and the resistance force have not converged, adjust the parameters in the calculation model and recalculate the suction force and the resistance force until they reach a convergence state.

[0137] In some embodiments, determining the target opening of the shutters according to the thermal performance calculation result, and controlling the shutters according to the target opening further includes:

[0138] Calculate the water temperature out of the tower under different shutter openings, and establish the corresponding relationship between the shutter opening and the water temperature out of the tower;

[0139] According to the target out-tower water temperature, the target opening of the louver is determined by the corresponding relationship between the opening of the louver and the out-tower water temperature.

[0140] According to the relationship between the target tower water temperature, the shutter opening and the tower water temperature, the recommended shutter opening can be given. By controlling the shutter opening, the desired tower water temperature can be achieved.

[0141] Corresponding to the above-mentioned control method based on cooling tower water temperature, the present invention also proposes a control device for cooling tower water temperature. Since the device embodiment of the present invention corresponds to the above-mentioned method embodiment, the details not disclosed in the device embodiment can be referred to the above-mentioned method embodiment, and will not be repeated in the present invention.

[0142] Figure 5 A schematic diagram of a cooling tower water temperature control device provided in an embodiment of the present disclosure is shown in FIG. Figure 5 As shown, including:

[0143] An acquisition unit 31 is used to acquire the unit load, meteorological parameters and circulating cooling water volume of the indirect air cooling tower;

[0144] A first calculation unit 32 is used to perform thermal performance calculation based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume to determine the thermal state of the cooling tower;

[0145] The determination unit 33 is used to determine the target opening of the shutter according to the calculation result of the thermal performance, and control the shutter according to the target opening.

[0146] The control device of cooling tower water temperature provided by the present disclosure has the following main technical solutions: obtaining the unit load, meteorological parameters and circulating cooling water volume of the indirect air cooling tower; performing thermal performance calculation based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume to determine the thermal state of the cooling tower; determining the target opening of the shutters according to the results of the thermal performance calculation, and controlling the shutters according to the target opening. Compared with the related art, the embodiment of the present application timely adjusts the shutter opening by real-time monitoring of the unit load, meteorological parameters and circulating cooling water parameters, combined with thermal performance calculation, to ensure that the outlet water temperature meets the unit operation requirements, and by optimizing the shutter opening, the energy consumption of the cooling tower can be reduced and the operating cost can be reduced. On the premise of ensuring the cooling effect, energy conservation and emission reduction are achieved, which is in line with the development concept of green environmental protection.

[0147] Furthermore, in a possible implementation of the embodiment of the present disclosure, as Figure 5 As shown, the device also includes:

[0148] The second calculation unit 34 is used to recalculate the thermal performance and determine the shutter opening after the determination unit 33 determines the target opening of the shutter according to the thermal performance calculation result and controls the shutter according to the target opening, when there is a data change in the unit load of the indirect air cooling tower and at least one of the meteorological parameters.

[0149] Furthermore, in a possible implementation of the embodiment of the present disclosure, the acquisition unit 31 further includes:

[0150] Acquiring real-time meteorological parameters; wherein the meteorological parameters include at least one of temperature, humidity, and wind speed;

[0151] Get the real-time inlet temperature, outlet temperature and water flow of circulating cooling water.

[0152] Furthermore, in a possible implementation of the embodiment of the present disclosure, the first calculating unit 32 is further configured to:

[0153] Obtaining an initial shutter opening, and calculating a condenser heat load according to the initial shutter opening;

[0154] Calculate the inlet and outlet water temperature difference of the cooling tower based on the condenser heat load and circulating cooling water volume;

[0155] Iterative thermal calculation is performed according to the preset headwind speed and the preset tower water temperature until the calculation result of the preset tower water temperature converges; wherein, if the calculation result of the preset tower water temperature does not converge, the preset tower water temperature is reset;

[0156] Calculate the suction and resistance of the cooling tower, and determine the headwind speed based on the principle of suction and resistance balance;

[0157] It is determined whether the suction force and the resistance are converged, and when the suction force and the resistance are converged, the calculated tower outlet water temperature is output.

[0158] Furthermore, in a possible implementation of the embodiment of the present disclosure, the determining unit 33 is further configured to:

[0159] Calculate the water temperature out of the tower under different shutter openings, and establish the corresponding relationship between the shutter opening and the water temperature out of the tower;

[0160] According to the target out-tower water temperature, the target opening of the louver is determined by the corresponding relationship between the opening of the louver and the out-tower water temperature.

[0161] It should be noted that the above explanation of the method embodiment is also applicable to the device of the embodiment of the present disclosure, and the principle is the same, which is no longer limited in the embodiment of the present disclosure.

[0162] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium and a computer program product.

[0163] Figure 5 A schematic block diagram of an example electronic device 400 that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0164] like Figure 5 As shown, the device 400 includes a computing unit 401, which can perform various appropriate actions and processes according to a computer program stored in a ROM (Read-Only Memory) 402 or a computer program loaded from a storage unit 408 to a RAM (Random Access Memory) 403. In the RAM 403, various programs and data required for the operation of the device 400 can also be stored. The computing unit 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An I / O (Input / Output) interface 405 is also connected to the bus 404.

[0165] A number of components in the device 400 are connected to the I / O interface 405, including: an input unit 406, such as a keyboard, a mouse, etc.; an output unit 407, such as various types of displays, speakers, etc.; a storage unit 408, such as a disk, an optical disk, etc.; and a communication unit 409, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 409 allows the device 400 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0166] The computing unit 401 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 401 include, but are not limited to, a CPU (Central Processing Unit), a GPU (Graphic Processing Units), various dedicated AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSP (Digital Signal Processor), and any appropriate processor, controller, microcontroller, etc. The computing unit 401 performs the various methods and processes described above, such as a method for controlling the water temperature of a cooling tower. For example, in some embodiments, the method for controlling the water temperature of a cooling tower may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit 408. In some embodiments, part or all of the computer program may be loaded and / or installed on the device 400 via the ROM 402 and / or the communication unit 409. When the computer program is loaded into the RAM 403 and executed by the computing unit 401, one or more steps of the method described above may be performed. Alternatively, in other embodiments, the computing unit 401 may be configured to execute the aforementioned cooling tower water temperature control method in any other appropriate manner (for example, by means of firmware).

[0167] Various embodiments of the systems and techniques described above herein may be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application Specific Standard Products), SOCs (System On Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: being implemented in one or more computer programs that may be executed and / or interpreted on a programmable system including at least one programmable processor that may be a special purpose or general purpose programmable processor that may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0168] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0169] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a RAM, a ROM, an EPROM (Electrically Programmable Read-Only-Memory) or a flash memory, an optical fiber, a CD-ROM (Compact Dis sc Read-Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0170] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball), through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the 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 acoustic input, voice input, or tactile input).

[0171] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: LAN (Local Area Network), WAN (Wide Area Network), the Internet, and blockchain networks.

[0172] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship between the client and the server is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services ("Virtual Private Server", or "VPS" for short). The server may also be a server of a distributed system, or a server combined with a blockchain.

[0173] It should be noted that artificial intelligence is a discipline that studies how computers can simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, planning, etc.), and includes both hardware-level and software-level technologies. Artificial intelligence hardware technologies generally include technologies such as sensors, dedicated artificial intelligence chips, cloud computing, distributed storage, and big data processing; artificial intelligence software technologies mainly include computer vision technology, speech recognition technology, natural language processing technology, as well as machine learning / deep learning, big data processing technology, knowledge graph technology, and other major directions.

[0174] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0175] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for controlling the water temperature of a cooling tower, characterized in that: include: Obtain the unit load, meteorological parameters and circulating cooling water volume of the indirect air cooling tower; Based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume, a thermal performance calculation is performed to determine the thermal state of the cooling tower; According to the calculation result of the thermal performance, the target opening of the shutter is determined, and the shutter is controlled according to the target opening.

2. The method according to claim 1, characterized in that After determining the target opening of the shutter according to the thermal performance calculation result and controlling the shutter according to the target opening, the method further includes: When there is a data change in at least one of the unit load of the indirect air cooling tower and the meteorological parameter, the thermal performance calculation is re-performed and the shutter opening is determined.

3. The method according to claim 1, characterized in that The obtaining of the unit load, meteorological parameters and circulating cooling water volume of the indirect air cooling tower also includes: Acquiring real-time meteorological parameters; wherein the meteorological parameters include at least one of temperature, humidity, and wind speed; Get the real-time inlet temperature, outlet temperature and water flow of circulating cooling water.

4. The method according to claim 1, characterized in that The thermal performance calculation based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume to determine the thermal state of the cooling tower includes: Obtaining an initial shutter opening, and calculating a condenser heat load according to the initial shutter opening; Calculate the inlet and outlet water temperature difference of the cooling tower based on the condenser heat load and circulating cooling water volume; Iterative thermal calculation is performed according to the preset headwind speed and the preset tower water temperature until the calculation result of the preset tower water temperature converges; wherein, if the calculation result of the preset tower water temperature does not converge, the preset tower water temperature is reset; Calculate the draft and resistance of the cooling tower, and determine the headwind speed based on the draft and resistance balance principle; It is determined whether the suction force and the resistance are converged, and when the suction force and the resistance are converged, the calculated tower outlet water temperature is output.

5. The method according to claim 4, characterized in that Determining the target opening of the shutter according to the thermal performance calculation result, and controlling the shutter according to the target opening also includes: Calculate the water temperature out of the tower under different shutter openings, and establish the corresponding relationship between the shutter opening and the water temperature out of the tower; According to the target out-tower water temperature, the target opening of the louver is determined by the corresponding relationship between the opening of the louver and the out-tower water temperature.

6. A cooling tower water temperature control device, characterized in that: include: An acquisition unit, used to acquire the unit load, meteorological parameters and circulating cooling water volume of the indirect air cooling tower; A first calculation unit is used to perform thermal performance calculation based on the unit load of the indirect air cooling tower, the meteorological parameters and the parameters monitored by the circulating cooling water volume to determine the thermal state of the cooling tower; The determination unit is used to determine the target opening of the shutter according to the thermal performance calculation result, and control the shutter according to the target opening.

7. The device according to claim 6, characterized in that The device also includes: The second calculation unit is used to recalculate the thermal performance and determine the shutter opening after the determination unit determines the target opening of the shutter according to the thermal performance calculation result and controls the shutter according to the target opening, when there is a data change in the unit load of the indirect air cooling tower and at least one of the meteorological parameters.

8. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 5.

9. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to any one of claims 1-5.

10. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the method according to any one of claims 1 to 5.

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