Cold end temperature control method and device, electronic equipment and storage medium

Abstract

The invention discloses a cold end temperature control method and device, electronic equipment and a storage medium, and relates to the technical field of data processing, temperature data of a cold end and external environment parameters are obtained, the temperature state of each tube bundle in a cooling triangle is comprehensively mastered through temperature field analysis, and then an anti-freezing protection instruction and a back pressure optimization suggestion are generated; and the frequency of the circulating water pump and the opening degree of the shutter are dynamically adjusted according to the load change of the unit, so that the monitoring comprehensiveness and the control collaboration are improved, the monitoring precision is improved, the freezing risk is identified in time, the control logic centrality and the equipment collaboration are enhanced, and the intelligent and refined operation control requirements of the modern unit are met. And the economical efficiency and the safety of the unit are guaranteed.

Description

Technical Field

[0001] This disclosure relates to the field of data processing technology, and in particular to a method and apparatus for controlling cold junction temperature, electronic equipment, and storage medium. Background Technology

[0002] Indirect air-cooled units, as key thermodynamic cycle equipment in thermal and nuclear power systems, are widely used in arid and water-limited areas. The operating efficiency of their cold-end systems directly affects the overall economy and safety of the unit. With the optimization of energy structure and the increasing demands for environmental protection, indirect air-cooling technology has been widely applied in large generator sets. Monitoring and control of the cold-end temperature field has become a core technology for ensuring stable operation under low loads in winter. Among related technologies, a comprehensive monitoring and regulation system, encompassing data acquisition, processing, and control execution, has been constructed through the collaborative operation of temperature sensor networks, environmental parameter acquisition, and a distributed control system (DCS). This system covers key aspects such as radiator tube temperature monitoring, return water temperature feedback, and fan and pump linkage control.

[0003] In existing indirect air-cooled unit cold-end control methods, temperature measurement points are sparsely distributed, which can usually only reflect the water temperature difference at the sector level and cannot fully characterize the temperature status of each tube bundle within the cooling triangle. This makes it difficult to identify freezing risks in a timely manner, and has shortcomings such as insufficient monitoring accuracy, scattered control logic, and poor equipment coordination, making it difficult to meet the requirements of modern units for intelligent and refined operation control. Summary of the Invention

[0004] This disclosure provides a method, apparatus, electronic device, and storage medium for controlling cold junction temperature. Its main purpose is to address the problems of difficulty in timely identification of freezing risks, insufficient monitoring accuracy, fragmented control logic, and poor equipment coordination, which hinder the achievement of intelligent and refined operation control requirements for modern power generation units.

[0005] According to a first aspect of this disclosure, a method for controlling the cold junction temperature is provided, comprising:

[0006] Acquire temperature data and external environmental parameters at the cold end;

[0007] Based on the temperature data and external environmental parameters, temperature field analysis is performed to generate antifreeze protection commands and back pressure optimization suggestions;

[0008] The antifreeze protection command and back pressure optimization suggestions are sent to the control system, which dynamically adjusts the frequency of the circulating water pump and the opening of the louvers according to the changes in the unit load.

[0009] Optionally, acquiring the temperature data of the cold end and external environmental parameters includes:

[0010] The surface temperature and return water temperature of the cold end are collected through a distributed temperature sensor network, and at least one of the following is obtained: louver opening, wind speed, air inlet temperature and humidity.

[0011] Optionally, the step of performing temperature field analysis based on the temperature data and external environmental parameters to generate antifreeze protection commands and back pressure optimization suggestions includes:

[0012] Antifreeze protection commands are generated based on electronic map display of radiator surface temperature distribution, historical data comparison and analysis, and real-time alarm processing of abnormal temperature points.

[0013] Optionally, sending the antifreeze protection command and back pressure optimization suggestion to the control system, and dynamically adjusting the circulating water pump frequency and louver opening according to changes in unit load includes:

[0014] When the temperature data at the cold end is less than a set threshold, the back pressure control command is increased to prevent local overcooling;

[0015] When the load is stable, the opening of a single sector louver is dynamically adjusted based on the temperature difference of the return water at the cold end to achieve an optimized balance of the local temperature field.

[0016] Optionally, the method further includes:

[0017] In response to the rate of decrease in unit load being greater than or equal to a preset threshold, the antifreeze protection switch is triggered, controlling the frequency of the circulating water pump to increase the water flow rate within the cooling triangle and prevent the heat dissipation tube bundle from freezing.

[0018] According to a second aspect of this disclosure, a cold-end temperature control device is provided, comprising:

[0019] The acquisition unit is used to acquire temperature data of the cold end and external environmental parameters.

[0020] The generation unit is used to perform temperature field analysis based on the temperature data and external environmental parameters, and generate antifreeze protection commands and back pressure optimization suggestions.

[0021] The regulating unit is used to send the antifreeze protection command and back pressure optimization suggestions to the control system, and dynamically adjust the frequency of the circulating water pump and the opening of the louvers according to the changes in the unit load.

[0022] Optionally, the acquisition unit is further configured to:

[0023] The surface temperature and return water temperature of the cold end are collected through a distributed temperature sensor network, and at least one of the following is obtained: louver opening, wind speed, air inlet temperature and humidity.

[0024] Optionally, the generation unit is further configured to:

[0025] Antifreeze protection commands are generated based on electronic map display of radiator surface temperature distribution, historical data comparison and analysis, and real-time alarm processing of abnormal temperature points.

[0026] Optionally, the adjustment unit is further configured to:

[0027] When the temperature data at the cold end is less than a set threshold, the back pressure control command is increased to prevent local overcooling;

[0028] When the load is stable, the opening of a single sector louver is dynamically adjusted based on the temperature difference of the return water at the cold end to achieve an optimized balance of the local temperature field.

[0029] Optionally, the device further includes:

[0030] The control unit is used to trigger the antifreeze protection switch in response to the rate of decrease in unit load being greater than or equal to a preset threshold, and to control the frequency of the circulating water pump to increase the water flow rate in the cooling triangle and prevent the heat dissipation tube bundle from freezing.

[0031] According to a third aspect of this disclosure, an electronic device is provided, comprising:

[0032] At least one processor; and

[0033] A memory communicatively connected to the at least one processor; wherein,

[0034] The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect above.

[0035] According to a fourth aspect of this disclosure, a non-transitory computer-readable storage medium is provided storing computer instructions, wherein the computer instructions are configured to cause the computer to perform the method described in the first aspect above.

[0036] According to a fifth aspect of this disclosure, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the method described in the first aspect above.

[0037] The cold-end temperature control method, device, electronic equipment, and storage medium disclosed herein mainly include: acquiring cold-end temperature data and external environmental parameters; performing temperature field analysis based on the temperature data and external environmental parameters and generating antifreeze protection commands and back pressure optimization suggestions; sending the antifreeze protection commands and back pressure optimization suggestions to the control system, and dynamically adjusting the circulating water pump frequency and louver opening according to changes in unit load. Compared with related technologies, this application, by acquiring temperature data and external environmental parameters at the cold end, comprehensively understands the temperature status of each tube bundle within the cooling triangle through temperature field analysis, and generates antifreeze protection commands and back pressure optimization suggestions. Furthermore, it dynamically adjusts the circulating water pump frequency and louver opening according to unit load changes, improving the comprehensiveness of monitoring and the synergy of control. Therefore, it can solve the technical problems of existing indirect air-cooled unit cold end control methods, such as sparse distribution of temperature measurement points, inability to comprehensively characterize the temperature status of each tube bundle, difficulty in timely identification of freezing risks, insufficient monitoring accuracy, scattered control logic, poor equipment synergy, and difficulty in meeting the requirements of intelligent and refined operation control. This application achieves the technical effects of improving monitoring accuracy, timely identification of freezing risks, enhanced control logic centralization and equipment synergy, meeting the requirements of modern intelligent and refined operation control of units, and ensuring the economic efficiency and safety of the unit.

[0038] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0039] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein:

[0040] Figure 1 A schematic flowchart illustrating a method for controlling cold junction temperature provided in an embodiment of this disclosure;

[0041] Figure 2 A schematic diagram of a cold-end temperature control device provided in an embodiment of this disclosure;

[0042] Figure 3 A schematic diagram of another cold-end temperature control device provided in an embodiment of this disclosure;

[0043] Figure 4 A schematic block diagram of an example electronic device provided for embodiments of this disclosure. Detailed Implementation

[0044] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0045] The following description, with reference to the accompanying drawings, outlines a method, apparatus, electronic device, and storage medium for controlling the cold end temperature according to embodiments of the present disclosure.

[0046] Figure 1 This is a schematic flowchart illustrating a method for controlling cold junction temperature provided in an embodiment of this disclosure.

[0047] like Figure 1 As shown, the method includes the following steps:

[0048] Step 101: Obtain temperature data and external environmental parameters of the cold end;

[0049] The temperature data at the cold end mainly includes the temperature of the heat dissipation tube bundle on the windward side of the cooling triangle and the temperature of the return water in the cooling triangle. Specifically, to obtain this temperature data, digital temperature sensors can be installed on the surface of the heat dissipation tube bundle on the windward side within the cooling triangle of the air-cooled system. These sensors can directly contact the surface of the heat dissipation tube bundle, sensing and collecting the temperature information of the heat dissipation tube bundle in real time. At the same time, corresponding temperature sensors are also installed on the return water pipes of the cooling triangle to monitor the temperature of the return water in real time, thereby comprehensively obtaining the temperature conditions of each key component at the cold end. Here, the "cold end" refers to the core area in the indirect air-cooled unit that participates in the circulating water cooling process, encompassing the cooling triangle and its internal heat dissipation tube bundle, return water pipe, and other key components. The "cooling triangle" is an important cooling unit in the air-cooled system, composed of heat dissipation tube bundles, return water pipes, etc., and its temperature status directly affects the cooling efficiency and safe operation of the unit. In addition, obtaining external environmental parameters is equally important. These parameters mainly include the wind speed at the louvers of the indirect cooling tower and the temperature and humidity of the surrounding environment. To accurately acquire these parameters, environmental monitoring devices such as wind speed sensors and temperature and humidity sensors can be installed near the louvers of the indirect cooling tower. Wind speed sensors can measure the airflow velocity at the louvers in real time, while temperature and humidity sensors can simultaneously collect ambient air temperature and humidity information. These external environmental parameters are of significant reference value for subsequent temperature field-based optimization control, as environmental factors directly affect the heat dissipation efficiency of the heat sink bundle, thus influencing the temperature state of the cold end. Through the coordinated operation of these sensors and monitoring devices, temperature data and external environmental parameters at the cold end can be continuously and stably collected, providing reliable raw information for subsequent data processing and optimization control.

[0050] Step 102: Based on the temperature data and external environmental parameters, perform temperature field analysis and generate antifreeze protection instructions and back pressure optimization suggestions;

[0051] Temperature field analysis refers to combining acquired cold-end temperature data such as the temperature of the cooling triangle's air-facing heat dissipation tube bundle and the temperature of the cooling triangle's return water, as well as external environmental parameters such as the wind speed of the indirect cooling tower louvers and ambient temperature and humidity, to construct a cold-end temperature distribution model through data processing. This allows for a comprehensive understanding of the temperature status of each area of ​​the cold end, including temperature differences between different cooling triangles, temperature gradients of the heat dissipation tube bundle, and the location and trend of local low-temperature points. Here, "temperature field" refers to the spatial distribution of temperature in various parts of the cold end, and its distribution characteristics directly reflect the cooling efficiency and potential risks of the air-cooled system. Based on temperature field analysis, the antifreeze protection command is mainly generated to address the freezing risk that may occur during low-load operation in winter. When the analysis finds that the temperature of the heat dissipation tube bundle is too low, there is a local overcooling trend (for example, the load reduction rate reaches a certain set value, causing the temperature of the heat dissipation tube bundle to drop rapidly as the load decreases), or individual cooling triangles have abnormally low temperatures due to uneven water distribution, the system will generate corresponding antifreeze protection commands according to the specific state of the temperature field. For example, by increasing the back pressure control command to raise the temperature of the heat dissipation tube bundle, the system can avoid freezing caused by water stagnation or low flow rate. Alternatively, the system can adjust the opening of the louvers in a specific sector to regulate the heat dissipation efficiency of that area and prevent local freezing. The back pressure optimization suggestion is generated by combining the temperature field analysis results with the unit load changes. Under the premise of ensuring that the unit does not freeze, it comprehensively considers the balance between the power consumption of the circulating water pump and the output of the unit. By analyzing the influence of temperature data and external environmental parameters on back pressure (back pressure is the exhaust pressure of the steam turbine, which affects the unit efficiency; too high a pressure will reduce output, while too low a pressure may cause freezing), the back pressure value that optimizes the unit's operating economy is calculated, forming a back pressure optimization suggestion. This suggestion can be used to guide the frequency conversion regulation of the circulating water pump or the control of the louver opening. If it is put into closed-loop control, it can also be directly used as a control parameter to achieve precise adjustment of the cold end, thereby improving the economic efficiency of the unit's operation while ensuring safety.

[0052] Step 103: Send the antifreeze protection command and back pressure optimization suggestion to the control system, and dynamically adjust the frequency of the circulating water pump and the opening of the louvers according to the changes in unit load.

[0053] The control system refers to the DCS control system, which serves as the core control hub for unit operation. It receives and processes various control commands, thereby driving the actuators to move. Specifically, the transmission of commands and suggestions can be achieved through the communication link between the temperature field monitoring backend server and the DCS system. For example, it can be transmitted via the server's serial port (to RS-485) through the DCS communication management unit, or via the server's dual serial ports (to RS-485) connecting two redundant DCS communication cards. The transmission process follows the MODBUS-RTU standard protocol to ensure the stability and reliability of data transmission, enabling the DCS system to accurately obtain the specific content of the anti-freeze protection commands and back pressure optimization suggestions.

[0054] After the commands and suggestions are received by the DCS control system, the system dynamically adjusts the frequency of the circulating water pump and the opening of the louvers according to the real-time changes in the unit load. The adjustment of the "circulating water pump frequency" is achieved through frequency conversion control, which changes the operating frequency of the pump motor to adjust the pump speed, thereby changing the flow rate and volume of the circulating water. When the unit load decreases, if the anti-freeze protection command requires an increase in back pressure, the frequency of the circulating water pump can be appropriately reduced to decrease the flow rate of the circulating water and avoid local freezing caused by excessively low flow rate. When the back pressure optimization suggestion is aimed at improving economy, the frequency can be increased or decreased as needed to balance the power consumption of the pump and the output of the unit. The adjustment of the "louver opening" controls the airflow and velocity into the cooling triangle by changing the opening angle of the louver blades. When the unit load is stable, the opening of a single sector of the louver is adjusted in combination with the surface temperature of the radiator to ensure uniform heat dissipation in the area and prevent local overcooling. When the load fluctuates, it works in conjunction with the frequency adjustment of the circulating water pump to match the heat dissipation demand of the circulating water by adjusting the airflow, thereby stabilizing the unit back pressure.

[0055] This dynamic adjustment mechanism enables the circulating water pump frequency and louver opening to always adapt to changes in unit load. It avoids the risk of freezing during winter operation through antifreeze protection commands, and achieves precise control of unit back pressure under the premise of safety by relying on back pressure optimization suggestions, ultimately improving the safety and economy of indirect air-cooled unit operation.

[0056] In some embodiments, acquiring the temperature data of the cold end and external environmental parameters includes:

[0057] The surface temperature and return water temperature of the cold end are collected through a distributed temperature sensor network, and at least one of the following is obtained: louver opening, wind speed, air inlet temperature and humidity.

[0058] The distributed temperature sensor network consists of multiple digital temperature sensors deployed within the cooling triangle of the air-cooled system. These sensors are installed according to a specific distribution pattern. Specifically, temperature sensors are evenly arranged on the surface of the heat dissipation tube bundle on the windward side of the cooling triangle to collect the surface temperature of the heat dissipation tube bundle in real time. This temperature directly reflects the heat dissipation status of the heat dissipation tube bundle and whether there is a risk of local overcooling. At the same time, temperature sensors are also installed on the return water pipes of the cooling triangle to collect the return water temperature. Changes in the return water temperature can reflect the cooling effect and water distribution of the circulating water within the cooling triangle. Through this distributed arrangement, the sensor network can work collaboratively to comprehensively and accurately acquire temperature data at the cold end, avoiding the limitations of single-point measurement.

[0059] In acquiring external environmental parameters, at least one of the following is crucial: louver opening degree, wind speed, inlet air temperature, and humidity. Louver opening degree reflects the open state of the louvers and can be directly collected by the louver's built-in opening sensor; its size affects the amount of air entering the cooling triangle. Wind speed is measured by a wind speed sensor installed near the louvers of the indirect cooling tower, reflecting the airflow velocity through the louvers; wind speed directly affects the heat dissipation efficiency of the heat sink bundle. Inlet air temperature and humidity are collected by temperature and humidity sensors deployed in the inlet area of ​​the indirect cooling tower. Inlet air temperature refers to the temperature of the air entering the air-cooled system, and humidity refers to the corresponding degree of air moisture; both together affect the air's heat dissipation capacity. By collecting these external environmental parameters from the sensors and combining them with cold-end temperature data obtained from a distributed temperature sensor network, comprehensive and reliable basic data support can be provided for subsequent temperature field analysis and optimized control.

[0060] In some embodiments, the step of performing temperature field analysis based on the temperature data and external environmental parameters and generating antifreeze protection commands and back pressure optimization suggestions includes:

[0061] Antifreeze protection commands are generated based on electronic map display of radiator surface temperature distribution, historical data comparison and analysis, and real-time alarm processing of abnormal temperature points.

[0062] Electronic maps displaying the surface temperature distribution of radiators are an important means of visualizing the temperature field. Server software uses electronic maps to intuitively present the specific location and corresponding temperature value of each temperature measuring point on the radiator surface of the cooling triangle, which can clearly show the spatial distribution of temperature and help to quickly locate low temperature points or areas with abnormally low temperatures. These areas are often key parts of the heat sink bundle that are at risk of freezing, providing accurate location information for generating antifreeze protection commands.

[0063] Historical data comparison and analysis provides a reference benchmark for judging whether the temperature status is abnormal. The server software can save all monitoring data within one year, including radiator surface temperature data under different unit loads and different external environmental parameters (such as wind speed, temperature, and humidity). When performing temperature field analysis, the system compares the currently collected temperature data with historical temperature data under similar unit loads or similar external environmental conditions. By analyzing the temperature change trend (such as whether the current temperature is significantly lower than the historical temperature under the same operating conditions, whether the temperature drop rate exceeds the historical normal range, etc.), it determines whether there is an abnormal cooling trend on the current radiator surface, thereby providing data support for assessing the degree of freezing risk and generating reasonable anti-freeze protection commands.

[0064] Real-time alarm processing for abnormal temperature points is a crucial mechanism for timely response to freezing risks. When the temperature sensor detects that the temperature at a point on the radiator surface is below the set anti-freeze threshold (e.g., close to or below the freezing point of circulating water), or when the temperature drops rapidly within a short period and the rate of drop reaches the warning value, the server software triggers a real-time alarm, clearly displaying the location of the abnormal temperature point, the current temperature, and the degree of abnormality. Combining the specific location determined by the electronic map and the trend judgment based on historical data comparison analysis, the system can quickly process the alarm information, determine the risk level, and generate targeted anti-freeze protection commands. For example, for local low-temperature areas, the back pressure control command of the corresponding sector segment can be increased, or the opening of the louvers in that area can be adjusted to reduce heat dissipation, thereby effectively preventing the heat sink bundle from freezing.

[0065] In some embodiments, sending the antifreeze protection command and back pressure optimization suggestion to the control system, and dynamically adjusting the circulating water pump frequency and louver opening according to unit load changes includes:

[0066] When the temperature data at the cold end is less than a set threshold, the back pressure control command is increased to prevent local overcooling;

[0067] When the load is stable, the opening of a single sector louver is dynamically adjusted based on the temperature difference of the return water at the cold end to achieve an optimized balance of the local temperature field.

[0068] The system sends the antifreeze protection command and back pressure optimization suggestions to the control system, dynamically adjusting the circulating water pump frequency and louver opening according to unit load changes. Specifically, this manifests as targeted control logic under two typical operating conditions. When the cold-end temperature data is lower than a set threshold, the system triggers the back pressure adjustment mechanism in the antifreeze protection command, i.e., increasing the back pressure control command. Here, "cold-end temperature data" mainly refers to the surface temperature of the cooling triangular windward heat dissipation tube bundle or the return water temperature. The set threshold is usually determined based on the freezing point of the circulating water and the unit's safe operation experience. When these temperatures are lower than the threshold, it means that the heat dissipation tube bundle is at risk of localized overcooling or even freezing. After increasing the back pressure control command, the turbine exhaust pressure increases, and the exhaust temperature rises accordingly. This indirectly heats the heat dissipation tube bundle through the circulating water, effectively increasing its temperature and preventing water flow stagnation or freezing due to excessively low temperatures, thus ensuring the safety of the unit during low-load operation in winter.

[0069] When the unit load is stable, the overall operation of the indirect cooling tower is relatively stable. At this time, the system will implement fine-tuning based on the return water temperature difference at the cold end, dynamically correcting the louver opening of individual sector sections. The return water temperature difference at the cold end refers to the temperature deviation of different cooling triangle return water pipes. This deviation often reflects the uneven cooling efficiency of circulating water within each sector section, which may be caused by factors such as water distribution and air circulation. By monitoring the return water temperature of each sector section in real time, the system can identify local areas with low or high temperatures, and then adjust the louver opening of the corresponding sector section accordingly: for sector sections with low return water temperature (risk of overcooling), the louver opening is appropriately reduced to reduce the amount of cold air entering the area, reduce heat dissipation efficiency, and increase the local temperature; for sector sections with high return water temperature (insufficient heat dissipation), the louver opening is appropriately increased to increase cold air circulation and enhance heat dissipation. This local adjustment can optimize the temperature field balance of each sector, avoiding local overcooling and ensuring overall heat dissipation efficiency, thereby improving the economy and safety of unit operation under stable load.

[0070] In some embodiments, the method further includes:

[0071] In response to the rate of decrease in unit load being greater than or equal to a preset threshold, the antifreeze protection switch is triggered, controlling the frequency of the circulating water pump to increase the water flow rate within the cooling triangle and prevent the heat dissipation tube bundle from freezing.

[0072] The unit load reduction rate refers to the decrease in the current power load borne by the unit per unit time. This parameter directly reflects the changing trend of the unit's operating status. The "preset threshold" is a critical reduction rate set based on the unit's historical operating data, the antifreeze requirements of the heat dissipation tube bundle, and safe operating experience. When the actual load reduction rate reaches or exceeds this threshold, it means that the unit may quickly enter a low-load condition. At this time, the flow rate of the circulating water in the cooling triangle is very likely to decrease due to the load reduction, thereby increasing the risk of water flow stagnation, local overcooling, and freezing.

[0073] The antifreeze protection switch is a preset automatic protection mechanism in the system. One of its trigger conditions is that the unit load decrease rate meets the aforementioned threshold condition. Triggering the switch can quickly activate the corresponding antifreeze control logic. After the antifreeze protection switch is triggered, the system will control the circulating water pump frequency to increase. Here, "circulating water pump frequency" is directly related to the operating speed of the water pump motor. Increasing the frequency will drive the water pump speed to increase, thereby increasing the flow rate of circulating water in the cooling triangle. The manual clearly states that low circulating water flow rate and uneven water distribution in the cooling triangle are the main causes of radiator tube bundle freezing during low-load operation in winter. In particular, water flow may stagnate in some cooling triangles. Therefore, increasing the circulating water pump frequency to increase the water flow rate can effectively improve the problem of uneven water distribution, avoid local overcooling caused by water stagnation in the radiator tube bundle for too long, and thus fundamentally prevent the radiator tube bundle from freezing, ensuring the safe operation of the unit during rapid load decrease.

[0074] Corresponding to the aforementioned method for controlling cold end temperature, this invention also proposes a device for controlling cold end temperature. Since the device embodiments of this invention correspond to the method embodiments described above, details not disclosed in the device embodiments can be referred to in the method embodiments, and will not be repeated here.

[0075] Figure 2 This is a schematic diagram of the structure of a cold-end temperature control device provided in an embodiment of the present disclosure, as shown below. Figure 2 As shown, it includes:

[0076] Acquisition unit 21 is used to acquire temperature data of the cold end and external environmental parameters;

[0077] The generation unit 22 is used to perform temperature field analysis based on the temperature data and external environmental parameters and generate antifreeze protection commands and back pressure optimization suggestions;

[0078] The regulating unit 23 is used to send the antifreeze protection command and back pressure optimization suggestion to the control system, and dynamically adjust the frequency of the circulating water pump and the opening of the louvers according to the changes in the unit load.

[0079] Furthermore, in one possible implementation of this disclosure, the acquisition unit 21 is further configured to:

[0080] The surface temperature and return water temperature of the cold end are collected through a distributed temperature sensor network, and at least one of the following is obtained: louver opening, wind speed, air inlet temperature and humidity.

[0081] Furthermore, in one possible implementation of this disclosure embodiment, the generation unit 22 is further configured to:

[0082] Antifreeze protection commands are generated based on electronic map display of radiator surface temperature distribution, historical data comparison and analysis, and real-time alarm processing of abnormal temperature points.

[0083] Furthermore, in one possible implementation of this disclosure, the adjustment unit 23 is further configured to:

[0084] When the temperature data at the cold end is less than a set threshold, the back pressure control command is increased to prevent local overcooling;

[0085] When the load is stable, the opening of a single sector louver is dynamically adjusted based on the temperature difference of the return water at the cold end to achieve an optimized balance of the local temperature field.

[0086] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 3 As shown, the device further includes:

[0087] Control unit 24 is used to trigger the antifreeze protection switch in response to the rate of decrease in unit load being greater than or equal to a preset threshold, and to control the frequency of the circulating water pump to increase the water flow rate in the cooling triangle and prevent the heat dissipation tube bundle from freezing.

[0088] It should be noted that the foregoing explanation of the method embodiments also applies to the apparatus of the embodiments of this disclosure, and the principle is the same. Therefore, the embodiments of this disclosure are not limited thereto.

[0089] According to embodiments of this disclosure, this disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0090] Figure 4 A schematic block diagram of an example electronic device 300 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0091] like Figure 4 As shown, device 300 includes a computing unit 301, which can perform various appropriate actions and processes based on a computer program stored in ROM (Read-Only Memory) 302 or a computer program loaded from storage unit 308 into RAM (Random Access Memory) 303. RAM 303 can also store various programs and data required for the operation of device 300. The computing unit 301, ROM 302, and RAM 303 are interconnected via bus 304. I / O (Input / Output) interface 305 is also connected to bus 304.

[0092] Multiple components in device 300 are connected to I / O interface 305, including: input unit 306, such as keyboard, mouse, etc.; output unit 307, such as various types of monitors, speakers, etc.; storage unit 308, such as disk, optical disk, etc.; and communication unit 309, such as network card, modem, wireless transceiver, etc. Communication unit 309 allows device 300 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0093] The computing unit 301 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 301 include, but are not limited to, CPUs (Central Processing Units), GPUs (Graphics Processing Units), various special-purpose AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSPs (Digital Signal Processors), and any suitable processor, controller, microcontroller, etc. The computing unit 301 performs the various methods and processes described above, such as the cold junction temperature control method. For example, in some embodiments, the cold junction temperature control method may be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 308. In some embodiments, part or all of the computer program may be loaded and / or installed on device 300 via ROM 302 and / or communication unit 309. When the computer program is loaded into RAM 303 and executed by the computing unit 301, one or more steps of the methods described above may be performed. Alternatively, in other embodiments, the computing unit 301 may be configured to perform the aforementioned cold junction temperature control method by any other suitable means (e.g., by means of firmware).

[0094] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application-Specific Standard Products), SOCs (System-on-Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0095] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0096] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, RAM, ROM, EPROM (Electrically Programmable Read-Only Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0097] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0098] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication (e.g., communication networks) of any form or medium. Examples of communication networks include LANs (Local Area Networks), WANs (Wide Area Networks), the Internet, and blockchain networks.

[0099] Computer systems can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. A server can be a cloud server, also known as a cloud computing server or cloud host, a hosting product within the cloud computing service ecosystem, addressing the shortcomings of traditional physical hosts and VPS (Virtual Private Server, or simply "VPS") services, such as high management difficulty and weak business scalability. Servers can also be servers for distributed systems or servers incorporating blockchain technology.

[0100] It's important to note that artificial intelligence (AI) is the study of enabling computers to simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). It encompasses both hardware and software technologies. AI hardware technologies generally include sensors, dedicated AI chips, cloud computing, distributed storage, and big data processing. AI software technologies primarily include computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graph technologies.

[0101] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0102] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A method for controlling the cold end temperature, characterized in that, include: Acquire temperature data and external environmental parameters at the cold end; Based on the temperature data and external environmental parameters, temperature field analysis is performed to generate antifreeze protection commands and back pressure optimization suggestions; The antifreeze protection command and back pressure optimization suggestions are sent to the control system, which dynamically adjusts the frequency of the circulating water pump and the opening of the louvers according to the changes in the unit load.

2. The method according to claim 1, characterized in that, The acquisition of temperature data and external environmental parameters at the cold end includes: The surface temperature and return water temperature of the cold end are collected through a distributed temperature sensor network, and at least one of the following is obtained: louver opening, wind speed, air inlet temperature and humidity.

3. The method according to claim 1, characterized in that, The process of performing temperature field analysis based on the temperature data and external environmental parameters to generate antifreeze protection commands and back pressure optimization suggestions includes: Antifreeze protection commands are generated based on electronic map display of radiator surface temperature distribution, historical data comparison and analysis, and real-time alarm processing of abnormal temperature points.

4. The method according to claim 1, characterized in that, The step of sending the antifreeze protection command and back pressure optimization suggestion to the control system, and dynamically adjusting the circulating water pump frequency and louver opening according to changes in unit load, includes: When the temperature data at the cold end is less than a set threshold, the back pressure control command is increased to prevent local overcooling; When the load is stable, the opening of a single sector louver is dynamically adjusted based on the temperature difference of the return water at the cold end to achieve an optimized balance of the local temperature field.

5. The method according to claim 1, characterized in that, The method further includes: In response to a rate of decrease in unit load greater than or equal to a preset threshold, the antifreeze protection switch is triggered, controlling the frequency of the circulating water pump to increase the water flow rate within the cooling triangle and prevent the heat dissipation tube bundle from freezing.

6. A device for controlling the cold end temperature, characterized in that, include: The acquisition unit is used to acquire temperature data of the cold end and external environmental parameters. The generation unit is used to perform temperature field analysis based on the temperature data and external environmental parameters, and generate antifreeze protection commands and back pressure optimization suggestions. The regulating unit is used to send the antifreeze protection command and back pressure optimization suggestions to the control system, and dynamically adjust the frequency of the circulating water pump and the opening of the louvers according to the changes in the unit load.

7. The apparatus according to claim 6, characterized in that, The acquisition unit is also used for: The surface temperature and return water temperature of the cold end are collected through a distributed temperature sensor network, and at least one of the following is obtained: louver opening, wind speed, air inlet temperature and humidity.

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 to enable the at least one processor to perform the method of any one of claims 1-5.

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

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

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