A cooling control device for a wind turbine heat exchange system and a wind turbine generator set

Abstract

This application discloses a cooling control device for a wind turbine heat exchange system and a wind turbine generator set. The cooling control device includes: a liquid storage tank for storing liquid; a flow meter, the first end of which is connected to the outlet of the liquid storage tank; a first valve, the inlet of which is connected to the second end of the flow meter, and each branch port of the first valve being connected to a spray device; and a spray device located near the heat exchanger of the wind turbine generator set for spraying liquid onto the target cooling area. The technical solution provided by this application can save water consumption of the spray device and improve the heat exchange efficiency of the heat exchange system.

Description

Technical Field

[0001] This disclosure relates to the field of industrial cooling technology, and in particular to a cooling control device for a wind turbine heat exchange system and a wind turbine generator set. Background Technology

[0002] As the capacity of individual wind turbine generators continues to increase, the heat loss of their core components is also increasing accordingly. To address the heat dissipation problem of wind turbines, the current common approach is to integrate air-to-water heat exchangers into the turbine for enhanced cooling. To further improve the heat exchange efficiency of air-to-water heat exchangers, a solution has been proposed: adding a spray device to the air side of the heat exchanger. This spray device sprays liquid onto the air side, reducing the air temperature through isenthalpic humidification and surface evaporation, ultimately improving the heat exchange efficiency of the air-to-water heat exchanger.

[0003] However, existing spraying devices typically spray liquid onto the air side of the air-water cooled heat exchanger in a timed or quantitative manner, which results in a waste of water resources.

[0004] Therefore, it is necessary to provide a new cooling control device for the heat exchange system of a wind turbine generator and a wind turbine generator set to solve the above-mentioned shortcomings. Utility Model Content

[0005] The purpose of this application is to provide a cooling control device for a wind turbine heat exchange system and a wind turbine generator set, which can save water consumption of the spray device and improve the heat exchange efficiency of the heat exchange system.

[0006] To achieve the above objectives, this application provides a cooling control device for a wind turbine heat exchange system. The cooling control device includes: a detection module for acquiring operating condition data of the wind turbine and heat dissipation data of each heat exchanger; a control module for generating a spray trigger condition for any target heat exchanger among the heat exchangers based on the operating condition data and the heat dissipation data of each heat exchanger, and, when the spray trigger condition is met, determining the liquid spray volume for a target cooling area based on the target heat dissipation data of the target heat exchanger and / or the operating condition data, wherein the target cooling area includes the surface area of ​​the target heat exchanger and / or the air heat exchange area near the target heat exchanger; a liquid storage tank for storing liquid; a flow meter, with its first end connected to the outlet of the liquid storage tank; a first valve, with its inlet connected to the second end of the flow meter, and each branch port of the first valve connected to a spraying device; and a spraying device disposed near the heat exchanger of the wind turbine generator set for spraying liquid onto the target cooling area.

[0007] To achieve the above objectives, this application also provides a wind turbine generator set having the cooling control device described above.

[0008] Therefore, the technical solution provided in this application establishes a dual control mechanism: "spraying is activated when trigger conditions are met" and "spraying volume is matched according to actual heat dissipation needs," by collecting operating condition data of the wind turbine and heat dissipation data of each heat exchanger. The system only activates spraying when the target heat exchanger has a genuine heat dissipation need, and the spraying volume is dynamically adjusted according to the actual heat dissipation needs of the target heat exchanger. This not only solves the water waste problem in traditional spraying schemes but also highly matches the actual heat dissipation needs of the target heat exchanger, effectively improving its heat exchange efficiency. The technical solution provided in this application not only significantly saves water consumption in the spraying device but also effectively improves its heat exchange efficiency by precisely matching the heat dissipation needs of the target heat exchanger. Attached Figure Description

[0009] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0010] Figure 1 This is a flowchart of the cooling control method for the heat exchange system of a wind turbine generator according to the embodiments of this application;

[0011] Figure 2 This is a schematic diagram of the functional modules of the cooling control device in the embodiments of this application;

[0012] Figure 3 This is a schematic diagram of the cooling control device in the embodiments of this application.

[0013] Figure 4 This is a schematic diagram of the cooling control device in the embodiments of this application;

[0014] Figure 5 This is a schematic diagram of the cooling control device in another embodiment of this application. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, the terms "first," "second," "third," etc., are only used to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, when an element is described as "connected" to another element, it can be directly connected to the other element, or there can be one or more intermediate elements between them. "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0016] As the capacity of individual wind turbine generators continues to increase, the heat loss of their core components is also increasing accordingly. A large amount of heat accumulates inside the wind turbine, leading to problems such as overheating of internal components and degradation of power generation performance. To address the heat dissipation problem of wind turbines, a common approach is to integrate an air-to-water cooling heat exchanger into the wind turbine for enhanced cooling. The cooling system inside the wind turbine is connected to the heat exchanger. The coolant in the cooling system absorbs heat and flows into the inlet of the heat exchanger, where it exchanges heat with the outside air, thus cooling the coolant. The cooled coolant then flows back to the cooling system, ultimately achieving cyclical heat dissipation for the wind turbine. However, due to the fact that the convective heat transfer coefficient on the air side of the air-to-water cooling heat exchanger is much lower than that on the water side, the heat exchange efficiency of the air-to-water cooling heat exchanger faces certain bottlenecks.

[0017] To further improve the heat exchange efficiency of air-to-water heat exchangers, a solution has been proposed to add a spray device to the air side of the heat exchanger. This spray device sprays liquid onto the air side, reducing the air temperature through isenthalpic humidification and surface evaporation, ultimately improving the heat exchange efficiency of the air-to-water heat exchanger.

[0018] However, existing spraying devices typically spray liquid onto the air side of air-to-water heat exchangers using timed or metered methods. The amount of liquid sprayed cannot be adjusted according to the actual operating conditions of the wind turbine, nor does it consider the heat exchanger's own heat dissipation status, easily leading to water waste. For example, when the wind turbine operates at low load, heat loss is low, and the heat exchanger does not require a large amount of spraying to meet its heat dissipation needs. However, the timed mode still sprays water at a fixed cycle, and the metered mode still sprays water at a fixed flow rate, resulting in "overspraying waste." Similarly, if the air humidity near the heat exchanger is high (such as during rainy weather), a small amount of spraying can improve heat exchange efficiency, but the metered mode still maintains a fixed spray volume. Or, even if there is no obvious heat accumulation in certain areas of the heat exchanger, additional water may be sprayed due to timed spraying, all of which contribute to water waste.

[0019] Therefore, how to save water consumption in spraying devices and improve the heat exchange efficiency of heat exchangers has become an urgent issue to be addressed in this field.

[0020] The present application will now be described in more detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the present invention. The embodiments described herein are only a part of the embodiments of the present application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In this application, the wind turbine integrates at least one heat exchanger, which can be an air-water cooled heat exchanger, an air-cooled heat exchanger, a liquid-cooled heat exchanger, a phase change heat exchanger, etc. The heat exchanger is connected to the internal cooling system of the wind turbine to dissipate heat from the coolant in the cooling circuit. The heat exchanger can be located inside the wind turbine. For example, it can be placed near heat-generating components such as the generator stator / rotor, gearbox, and pitch system to shorten the heat transfer path. If the wind turbine uses a centralized cooling system, the heat exchanger can be located on top of the nacelle. Each heat exchanger is equipped with a corresponding spray device, which sprays liquid onto the surface area or air-heat exchange area of ​​the heat exchanger to enhance heat dissipation. The number of heat exchangers can be set according to actual needs, and this application does not limit this.

[0022] Please see Figure 1 This is a flowchart of the cooling control method for the heat exchange system of a wind turbine generator in Embodiment 1 of this application.

[0023] S101: Obtain the operating condition data of the wind turbine and the heat dissipation data of each heat exchanger.

[0024] In this embodiment, the system can collect operating condition data of the wind turbine and heat dissipation data of each heat exchanger through sensors. The operating condition data includes at least one of the following parameters: wind turbine operating power, rotor speed, turbine-side voltage, electrical load, and total output current. The heat dissipation data includes at least the cooling medium temperature of the heat exchanger and the ambient temperature of the area where the heat exchanger is located. Specifically, sensors can be installed at the generator output terminal of the wind turbine to obtain real-time operating power, turbine-side voltage, and other parameters, or a speed encoder can be installed at the main shaft bearing end of the wind turbine to obtain the rotor speed. Of course, in simplified calculation scenarios, only the operating power of the wind turbine can be collected, and then the rotor speed, turbine-side voltage, electrical load, and total output current can be calculated from the operating power. This application does not limit the method of collecting operating condition data.

[0025] In practical applications, temperature sensors can be installed on both the inlet and outlet pipes of the heat exchanger to collect the temperature of the cooling medium (including the temperature at the outlet and inlet ends). Alternatively, in other implementations, the system may collect only the temperature at the outlet or inlet end of the cooling medium.

[0026] Regarding the ambient temperature of the area where the heat exchanger is located, in practical applications, if the heat exchanger is located inside the nacelle of the wind turbine, a temperature sensor can be installed near the air inlet side of the heat exchanger. If the heat exchanger is located on top of the nacelle of the wind turbine, a temperature sensor can be installed upwind of the air inlet side of the heat exchanger or at another location that is equivalent to upwind, in order to collect the ambient temperature of the area where the heat exchanger is located.

[0027] S102: For any target heat exchanger among the heat exchangers, generate the spray triggering condition for the target heat exchanger based on the operating condition data and the heat dissipation data of each heat exchanger.

[0028] In the embodiments of this application, if the heat exchange system consists of multiple heat exchangers, then for any one of the heat exchangers (for ease of description, this application refers to it as the target heat exchanger), the system can set the spraying trigger conditions of the spray device separately for it according to the collected operating condition data and heat dissipation data, so as to accurately match the heat dissipation requirements of each heat exchanger, perform differentiated spraying on heat exchangers with different heat dissipation requirements, and thus maximize water saving.

[0029] In practical applications, the system can aggregate the collected operating condition data and heat dissipation data of each heat exchanger to obtain the steady-state heat flow and cumulative heat transfer over a period of time for each heat exchanger. Then, based on the aforementioned steady-state heat flow and cumulative heat transfer over a period of time, the system calculates the heat dissipation demand of the target heat exchanger and generates the spraying trigger conditions for the target heat exchanger based on the obtained heat dissipation demand. Specifically, the system can classify the heat dissipation data of multiple heat exchangers in the same area at the same time according to the classification standard of "heat exchanger ID + collection time," and then match the operating condition data with the heat dissipation data at the corresponding time to obtain an aggregated dataset. Afterwards, based on the aggregated dataset, the system can calculate the steady-state heat flow and cumulative heat transfer over a period of time for each heat exchanger according to the heat transfer formula. The steady-state heat flow characterizes the instantaneous heat transferred by the heat exchanger to the environment through the medium at a certain moment, and the cumulative heat transfer over a period of time characterizes the total heat transferred by the heat exchanger within a continuous period of time. By combining steady-state heat flow and cumulative heat transfer over time, the heat concentration area and heat load accumulation area of ​​the wind turbine can be identified. Then, based on the specific heat transfer path inside / outside the nacelle, the heat dissipation requirement of the target heat exchanger at the current moment or a specified future moment can be calculated. The heat dissipation requirement at the current moment refers to the minimum heat dissipation capacity required by the target heat exchanger to maintain the temperature stability of its core components at the current moment, while the heat dissipation requirement at a specified future moment refers to the minimum heat dissipation capacity required by the target heat exchanger to maintain the temperature stability of its core components at a specified future moment. Comparing the heat dissipation requirement of the target heat exchanger with its actual heat dissipation capacity yields the spray triggering conditions for the target heat exchanger.

[0030] In another feasible implementation, the system can also perform statistical analysis on the collected historical operating data and the historical heat dissipation data of each heat exchanger, screen out the operating samples in which the heat exchange efficiency of the target heat exchanger meets the standard after the spraying is started, and then use the data contained in the above operating samples as the spraying trigger conditions for the target heat exchanger. That is, the system can generate the spraying trigger conditions for the target heat exchanger based on "data-heat dissipation effect-threshold".

[0031] In one feasible implementation, the spraying triggering conditions include current triggering conditions, predictive triggering conditions, and wind farm coordinated triggering conditions. The current triggering condition determines whether the target heat exchanger currently requires spraying; the predictive triggering condition determines whether the target heat exchanger will require spraying at a future specified time; and the wind farm coordinated triggering condition determines whether the wind turbine has experienced sensor malfunctions (including sensors measuring operating condition data and sensors measuring heat dissipation data). The current triggering conditions, predictive triggering conditions, and wind farm coordinated triggering conditions will be described in detail later. It should be noted that the spraying triggering conditions may also include only the current triggering condition, the predictive triggering condition, or the wind farm coordinated triggering condition, or only the current triggering condition and the predictive triggering condition; this application does not impose any limitations on this.

[0032] S103: When the spraying triggering condition is met, the liquid spraying volume of the target cooling area is determined according to the target heat dissipation data of the target heat exchanger and / or the operating condition data, wherein the target cooling area includes the surface area of ​​the target heat exchanger and / or the air heat exchange area near the target heat exchanger.

[0033] In this embodiment, after generating the spray triggering conditions for the target heat exchanger, the system can compare the heat dissipation data of the target heat exchanger (referred to as target heat dissipation data for ease of description) with the set conditions in the spray triggering conditions to determine whether the target heat exchanger meets the spray triggering conditions. If the target heat exchanger meets the above-mentioned spray triggering conditions, the system can further determine the liquid spraying volume of the target cooling area based on the target heat dissipation data and / or operating condition data, wherein the target cooling area includes at least the surface area of ​​the target heat exchanger and / or the air heat exchange area near the target heat exchanger.

[0034] For example, assuming the spray trigger condition is that the cooling medium temperature of the target heat exchanger is greater than a threshold, the system can compare the cooling medium temperature of the target heat exchanger with the threshold. If the cooling medium temperature of the target heat exchanger is greater than the threshold, the system can determine that the target heat exchanger meets the spray trigger condition, and the corresponding spray device can start spraying. Then, the system can determine the liquid spray volume of the spray device based on the difference between the threshold and the cooling medium temperature of the target heat exchanger. After obtaining the liquid spray volume, the spray device can spray liquid onto the surface area of ​​the target heat exchanger and / or the air heat exchange area near the target heat exchanger, using this liquid spray volume as a standard.

[0035] In one implementation, determining the liquid spray volume for the target cooling zone based on the target heat dissipation data and / or operating condition data of the target heat exchanger can also be achieved in the following manner:

[0036] First, the target heat dissipation data and / or operating condition data of the target heat exchanger are input into the trained AI model, and then the liquid spraying volume of the target cooling area is output through the AI ​​model.

[0037] Specifically, the system can use a multi-layer perceptron (MLP) or a convolutional long short-term memory network (CNN-LSTM model) to build an AI model, then train it, and finally input parameters such as the cooling medium temperature of the target heat exchanger, the ambient temperature of the area where the target heat exchanger is located, and the operating power of the wind turbine into the trained AI model so that the AI ​​model can output the optimal liquid spraying amount for the target cooling area.

[0038] When training the AI ​​model, the system first generates a first training dataset, which includes at least one of the following: historical operating power sequences of wind turbines, historical cooling medium temperature data of each heat exchanger, and historical ambient temperature data. Furthermore, the first training dataset also includes labels representing multiple liquid spraying volumes. After generating the first training dataset, the system can use it to train the AI ​​model to improve the model's accuracy in predicting liquid spraying volumes.

[0039] For example, the system can collect the real-time output power of wind turbines over the past year at a sampling frequency of 10 minutes per session, forming a continuous historical operating power sequence. Simultaneously, it can collect the cooling medium temperature and ambient temperature of each heat exchanger over the past year at a sampling frequency of 10 minutes per session, labeling the data with the corresponding heat exchanger ID. This yields historical cooling medium temperature data and historical ambient temperature data for each heat exchanger. The system then aligns the historical operating power sequence, historical cooling medium temperature data, and historical ambient temperature data with timestamps, and combines this with historical spray volume to create a "data-liquid spray volume-heat dissipation effect" data sample. Subsequently, based on the "data-liquid spray volume-heat dissipation effect" mapping relationship, the system can generate a first training dataset with labels corresponding one-to-one with the data samples.

[0040] It should be noted that the spraying device can spray liquid in two ways: atomize the liquid through an atomizer, and then use the airflow of the target heat exchanger to make the droplets evaporate on the surface of the target heat exchanger and in the airflow to enhance heat dissipation; or spray the liquid directly on the surface of the target heat exchanger and use the flow of the liquid to enhance heat dissipation.

[0041] It should be noted that the above-mentioned use of a cooling medium temperature exceeding a threshold as the spray trigger condition is merely an example and is not a limitation on the spray trigger condition. In other embodiments, the system may also use conditions such as an ambient temperature in the area where the target heat exchanger is located exceeding a threshold or an operating power of the wind turbine exceeding a threshold as the spray trigger condition, and this application does not impose any restrictions on this.

[0042] In some cases, wind turbines may experience sensor malfunctions, meaning that the wind turbine cannot accurately output operating condition data and / or heat dissipation data. If the data collected by the faulty sensor is still used to control the sprinkler system, it may result in insufficient heat dissipation from the heat exchanger or waste of water resources.

[0043] To address the aforementioned issues, in one implementation, the system can collect data such as the operating power of each wind turbine in the wind farm, the cooling medium temperature of the radiator, and the ambient temperature. This data is then trained using a neural network model to form a wind farm collaborative heat dissipation prediction model. This model can then be used to predict relevant operating parameters of individual wind turbines, thereby identifying whether a sensor malfunction has occurred in that turbine.

[0044] If the wind turbine's sensors are functioning correctly, then the wind turbine's heat exchanger can be considered to meet the wind farm's coordinated triggering conditions. Taking the target heat exchanger as an example, the system can further utilize the relevant data output by the wind turbine's sensors to determine whether the target heat exchanger meets the current triggering conditions, and then determine the liquid spraying volume for the target cooling area based on the target heat dissipation data and / or operating condition data.

[0045] If the wind turbine's sensor malfunctions, it can be assumed that the wind turbine's heat exchanger does not meet the wind farm coordination triggering conditions. The data output by the wind turbine's sensor is incorrect, and the system cannot use this data to calculate the liquid spraying volume. In this scenario, the system can determine the liquid spraying volume for the target cooling area based on the parameters carried in the wind farm coordination triggering conditions.

[0046] For example, if the wind farm coordinated heat dissipation prediction model obtains the following predicted parameters for heat exchanger No. 1 of fan 10 based on the global wind farm data at 14:00: cooling medium temperature 39℃, deviation threshold ±2℃, liquid spray volume 10L, and spray flow rate 1L / min. If the sensor output of heat exchanger No. 1 of fan 10 shows a cooling medium temperature of 35℃, then the system can assume that the sensor of fan 10 is faulty, and heat exchanger No. 1 does not meet the wind farm coordinated triggering conditions. In this case, the system can directly use the data "liquid spray volume 10L" in the wind farm coordinated triggering conditions as the liquid spray volume for heat exchanger No. 1, and spray liquid onto heat exchanger No. 1 at a spray flow rate of 1L / min.

[0047] In one implementation, the current triggering condition includes at least a first power threshold of the wind turbine at the current moment, a first dielectric temperature threshold of the target heat exchanger, and a first ambient temperature threshold of the area where the target heat exchanger is located. The first power threshold characterizes the operating power threshold set for the wind turbine at the current moment, the first dielectric temperature threshold characterizes the cooling medium temperature threshold set for the target heat exchanger at the current moment, and the first ambient temperature threshold characterizes the ambient temperature threshold set for the area where the target heat exchanger is located at the current moment. The predicted triggering condition includes at least a second power threshold of the wind turbine at a future specified moment, a second dielectric temperature threshold of the target heat exchanger, and a second ambient temperature threshold of the area where the target heat exchanger is located. The second power threshold characterizes the operating power threshold set for the wind turbine at a future specified moment, the second dielectric temperature threshold characterizes the cooling medium temperature threshold set for the target heat exchanger at a future specified moment, and the second ambient temperature threshold characterizes the ambient temperature threshold set for the area where the target heat exchanger is located at a future specified moment.

[0048] In one implementation, when the target heat exchanger meets the wind field coordinated triggering conditions, the liquid spray volume of the target cooling zone can be determined based on the target heat dissipation data and / or operating condition data in the following manner:

[0049] The system first determines whether the current operating power of the wind turbine is greater than a first power threshold. If the current operating power is greater than the first power threshold, the system can further determine whether the current cooling medium temperature of the target heat exchanger is greater than the first medium temperature threshold. If the current cooling medium temperature of the target heat exchanger is greater than the first medium temperature threshold, the system considers the target heat dissipation data to meet the current triggering conditions, and the system needs to activate the spray device to enhance heat dissipation of the target heat exchanger. At this time, the system can determine the liquid spray volume of the target cooling area based on the difference between the current ambient temperature of the area where the target heat exchanger is located and the first ambient temperature threshold.

[0050] In this embodiment, if the current operating power of the wind turbine is greater than the first power threshold, it indicates that the wind turbine is operating at a high power, and the heat generated by its internal components may increase. The system needs to consider whether the target heat exchanger can meet the current heat dissipation requirements. Therefore, the system can further determine whether the current cooling medium temperature of the target heat exchanger is greater than the first medium temperature threshold. If it is greater, it indicates that the cooling efficiency of the target heat exchanger has decreased, and the target heat exchanger cannot meet the current heat dissipation requirements. Therefore, the system needs to activate the spray device to enhance heat dissipation of the target heat exchanger. At this time, the system can calculate the liquid spraying amount based on the difference between the current ambient temperature of the area where the target heat exchanger is located and the first ambient temperature threshold to save water. Specifically, if the difference between the current ambient temperature of the area where the target heat exchanger is located and the first ambient temperature threshold is positive (i.e., the current ambient temperature of the area where the target heat exchanger is located is greater than the first ambient temperature threshold), then the system can set the relationship between the liquid spraying amount and the above difference as: y = kx, where y represents the liquid spraying amount, x represents the difference, and k is a proportionality coefficient. It should be noted that the value of k can be set based on empirical values. When the difference between the current ambient temperature of the area where the target heat exchanger is located and the first ambient temperature threshold is negative (i.e., the current ambient temperature of the area where the target heat exchanger is located is less than the first ambient temperature threshold), the system can set the liquid spraying volume to a quantitative value, which can also be set based on empirical values.

[0051] It should be noted that setting the relationship between the liquid spray volume and the difference as y = kx is merely illustrative and does not constitute a limitation on the relationship between the liquid spray volume and the difference. In other embodiments, the relationship between the liquid spray volume and the difference can also be set as an exponential function or a power function.

[0052] It should be noted that if the current operating power of the wind turbine is greater than the first power threshold, but the current cooling medium temperature of the target heat exchanger is less than or equal to the first medium temperature threshold, it means that the cooling efficiency of the target heat exchanger is sufficient to meet the current heat dissipation requirements. Therefore, the system can determine that the target heat dissipation data does not meet the current triggering conditions, and the system does not need to activate the spray device to enhance the heat dissipation of the target heat exchanger.

[0053] In one implementation, when the target heat exchanger meets the wind field coordinated triggering conditions, the liquid spray volume of the target cooling area can be determined based on the target heat dissipation data and / or operating condition data in the following manner:

[0054] The system first determines whether the current operating power of the wind turbine is greater than a first power threshold. If the current operating power is greater than the first power threshold, the system further determines whether the current ambient temperature of the area where the target heat exchanger is located is greater than the first ambient temperature threshold. If the current ambient temperature is greater than the first ambient temperature threshold, the system considers the target heat dissipation data to meet the current triggering conditions, and the system needs to activate the spray device to enhance heat dissipation of the target heat exchanger. At this time, the system can determine the liquid spray volume of the target cooling area based on the difference between the current cooling medium temperature of the target heat exchanger and the first medium temperature threshold.

[0055] In this embodiment, if the current operating power of the wind turbine is greater than the first power threshold, it indicates that the wind turbine is operating at a high power, and the heat generated by its internal components may increase. The system needs to consider whether the target heat exchanger can meet the current heat dissipation requirements. Therefore, the system can further determine whether the current ambient temperature of the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold. If it is greater, it indicates that the efficiency of the target heat exchanger in dissipating heat by relying on the outside air has decreased, and the target heat exchanger cannot meet the current heat dissipation requirements. Therefore, the system needs to activate the spray device to enhance heat dissipation of the target heat exchanger. At this time, the system can calculate the liquid spraying volume based on the difference between the current cooling medium temperature of the target heat exchanger and the first ambient temperature threshold to save water consumption. The specific calculation method is similar to the method by which the system calculates the liquid spraying volume based on the difference between the current ambient temperature of the area where the target heat exchanger is located and the first ambient temperature threshold, and will not be described in detail here.

[0056] It should be noted that if the current operating power of the wind turbine is greater than the first power threshold, but the current ambient temperature of the area where the target heat exchanger is located is less than or equal to the first ambient temperature threshold, it means that the cooling efficiency of the target heat exchanger is sufficient to meet the current heat dissipation requirements. Therefore, the system can determine that the target heat dissipation data does not meet the current triggering conditions, and the system does not need to turn on the spray device to enhance the heat dissipation of the target heat exchanger.

[0057] In one implementation, when the target heat exchanger meets the wind field coordinated triggering conditions, the liquid spray volume of the target cooling area can be determined based on the target heat dissipation data and / or operating condition data in the following manner:

[0058] The system first determines whether the current ambient temperature of the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold. If the current ambient temperature of the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold, the system can further determine whether the current operating power of the wind turbine is greater than the aforementioned first power threshold. If the current operating power of the wind turbine is greater than the aforementioned first power threshold, the system can consider that the target heat dissipation data meets the current triggering conditions, and the system needs to activate the spray device to enhance heat dissipation of the target heat exchanger. At this time, the system can determine the liquid spray volume of the target cooling area based on the difference between the current cooling medium temperature of the target heat exchanger and the aforementioned first medium temperature threshold.

[0059] In this embodiment, if the ambient temperature in the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold, it indicates that the efficiency of the target heat exchanger in dissipating heat through the outside air has decreased, and the target heat exchanger may not be able to meet the current heat dissipation requirements. Therefore, the system can further determine whether the current operating power of the wind turbine is greater than the aforementioned first power threshold. If it is, it indicates that the operating power of the wind turbine is currently high, and the heat generation of its internal components may increase. In this scenario, the target heat exchanger is highly likely to be unable to meet the current heat dissipation requirements, so the system needs to activate the spray device to enhance heat dissipation for the target heat exchanger. At this time, the system can calculate the liquid spray volume based on the difference between the current cooling medium temperature of the target heat exchanger and the first medium temperature threshold to save water consumption. The specific calculation method is similar to the method by which the system calculates the liquid spray volume based on the difference between the current ambient temperature in the area where the target heat exchanger is located and the first ambient temperature threshold, and will not be described in detail here.

[0060] It should be noted that if the ambient temperature in the area where the target heat exchanger is located is greater than the first ambient temperature threshold, but the operating power of the wind turbine is less than or equal to the first power threshold, it means that the cooling efficiency of the target heat exchanger is sufficient to meet the current heat dissipation requirements. Therefore, the system can determine that the target heat dissipation data does not meet the current triggering conditions, and the system does not need to turn on the spray device to enhance the heat dissipation of the target heat exchanger.

[0061] In one implementation, when the target heat exchanger meets the wind field coordinated triggering conditions, the liquid spray volume of the target cooling area can be determined based on the target heat dissipation data and / or operating condition data in the following manner:

[0062] The system first determines whether the current ambient temperature of the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold. If the current ambient temperature of the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold, the system can further determine whether the current cooling medium temperature of the target heat exchanger is greater than the aforementioned first medium temperature threshold. If the current cooling medium temperature of the target heat exchanger is greater than the aforementioned first medium temperature threshold, the system can consider that the target heat dissipation data meets the current triggering conditions, and the system needs to activate the spray device to enhance heat dissipation of the target heat exchanger. At this time, the system can determine the liquid spray volume of the target cooling area based on the difference between the current operating power of the wind turbine generator and the aforementioned first power threshold.

[0063] In this embodiment, if the ambient temperature in the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold, it indicates that the efficiency of the target heat exchanger in dissipating heat through the outside air has decreased, and the target heat exchanger may not be able to meet the current heat dissipation requirements. Therefore, the system can further determine whether the current cooling medium temperature of the target heat exchanger is greater than the aforementioned first medium temperature threshold. If it is greater, it indicates that the efficiency of the target heat exchanger in dissipating heat through the internal cooling medium has also decreased, and the target heat exchanger cannot meet the current heat dissipation requirements. Therefore, the system needs to activate the spray device to enhance heat dissipation for the target heat exchanger. At this time, the system can calculate the liquid spraying volume based on the difference between the current operating power of the wind turbine generator and the first power threshold to save water consumption. The specific calculation method is similar to the method by which the system calculates the liquid spraying volume based on the difference between the current ambient temperature in the area where the target heat exchanger is located and the first ambient temperature threshold, and will not be described in detail here.

[0064] It should be noted that if the ambient temperature of the area where the target heat exchanger is located is greater than the first ambient temperature threshold, but the cooling medium temperature of the target heat exchanger is less than or equal to the first medium temperature threshold, it means that the cooling efficiency of the target heat exchanger is sufficient to meet the current heat dissipation requirements. Therefore, the system can determine that the target heat dissipation data does not meet the current triggering conditions, and the system does not need to turn on the spray device to enhance the heat dissipation of the target heat exchanger.

[0065] In one implementation, when the target heat exchanger meets the wind field coordinated triggering conditions, the liquid spray volume of the target cooling area can be determined based on the target heat dissipation data and / or operating condition data in the following manner:

[0066] The system first determines whether the current cooling medium temperature of the target heat exchanger is greater than the aforementioned first temperature threshold. If the current cooling medium temperature of the target heat exchanger is greater than the aforementioned first temperature threshold, the system can further determine whether the current operating power of the wind turbine is greater than the aforementioned first power threshold. If the current operating power of the wind turbine is greater than the aforementioned first power threshold, the system can consider that the target heat dissipation data meets the current triggering conditions, and the system needs to activate the spray device to enhance heat dissipation of the target heat exchanger. At this time, the system can determine the liquid spray volume of the target cooling area based on the difference between the current ambient temperature of the area where the target heat exchanger is located and the aforementioned first ambient temperature threshold.

[0067] In this embodiment, if the cooling medium temperature of the target heat exchanger is greater than the aforementioned first medium temperature threshold, it indicates that the efficiency of heat dissipation by the target heat exchanger relying on its internal cooling medium has decreased, and the target heat exchanger may be unable to meet the current heat dissipation requirements. Therefore, the system can further determine whether the current operating power of the wind turbine is greater than the aforementioned first power threshold. If it is, it indicates that the operating power of the wind turbine is high, and the heat generation of its internal components may increase. In this scenario, the target heat exchanger is highly likely to be unable to meet the current heat dissipation requirements, so the system needs to activate the spray device to enhance heat dissipation for the target heat exchanger. At this time, the system can calculate the liquid spray volume based on the difference between the current ambient temperature of the area where the target heat exchanger is located and the first ambient temperature threshold to save water consumption. The specific calculation method can be referred to the foregoing content and will not be repeated here.

[0068] It should be noted that if the current cooling medium temperature of the target heat exchanger is greater than the first medium temperature threshold, but the current operating power of the wind turbine is less than or equal to the first power threshold, it means that the cooling efficiency of the target heat exchanger is sufficient to meet the current heat dissipation requirements. Therefore, the system can determine that the target heat dissipation data does not meet the current triggering conditions, and the system does not need to activate the spray device to enhance the heat dissipation of the target heat exchanger.

[0069] In one implementation, when the target heat exchanger meets the wind field coordinated triggering conditions, the liquid spray volume of the target cooling area can be determined based on the target heat dissipation data and / or operating condition data in the following manner:

[0070] The system first determines whether the current cooling medium temperature of the target heat exchanger is greater than the aforementioned first temperature threshold. If the current cooling medium temperature of the target heat exchanger is greater than the aforementioned first temperature threshold, the system can further determine whether the current ambient temperature of the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold. If the current ambient temperature of the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold, the system can consider that the target heat dissipation data meets the current triggering conditions, and the system needs to activate the spray device to enhance heat dissipation of the target heat exchanger. At this time, the system can determine the liquid spray volume of the target cooling area based on the difference between the current operating power of the wind turbine generator and the aforementioned first power threshold.

[0071] In this embodiment, if the current cooling medium temperature of the target heat exchanger is greater than the aforementioned first medium temperature threshold, it indicates that the efficiency of the target heat exchanger in dissipating heat through its internal cooling medium has decreased, and the target heat exchanger may be unable to meet the current heat dissipation requirements. Therefore, the system can further determine whether the current ambient temperature of the area where the target heat exchanger is located is greater than the aforementioned first ambient temperature threshold. If it is greater, it indicates that the efficiency of the target heat exchanger in dissipating heat through the outside air has also decreased, and the target heat exchanger cannot meet the current heat dissipation requirements. Therefore, the system needs to activate the spray device to enhance heat dissipation for the target heat exchanger. At this time, the system can calculate the liquid spraying volume based on the difference between the current operating power of the wind turbine generator and the first power threshold to save water consumption. The specific calculation method is similar to the method by which the system calculates the liquid spraying volume based on the difference between the current ambient temperature of the area where the target heat exchanger is located and the first ambient temperature threshold, and will not be described in detail here.

[0072] It should be noted that if the current cooling medium temperature of the target heat exchanger is greater than the first medium temperature threshold, but the current ambient temperature of the area where the target heat exchanger is located is less than or equal to the first ambient temperature threshold, it means that the cooling efficiency of the target heat exchanger is sufficient to meet the current heat dissipation requirements. Therefore, the system can determine that the target heat dissipation data does not meet the current triggering conditions, and the system does not need to turn on the spray device to enhance the heat dissipation of the target heat exchanger.

[0073] If the target heat dissipation data does not meet the current triggering conditions, it means that the cooling efficiency of the target heat exchanger is sufficient to meet the current heat dissipation requirements. However, the operating status of the wind turbine is dynamic, and at some point in the future, the heat generated by the wind turbine may exceed the thermal capacity limit of the target heat exchanger. If enhanced heat dissipation is applied to the target heat exchanger after the heat generated by the wind turbine exceeds the thermal capacity limit, it may cause a significant delay in the heat dissipation response. To address this issue, when the target heat dissipation data does not meet the current triggering conditions, the system can further determine whether the target heat dissipation data meets the predicted triggering conditions to decide whether it is necessary to activate the spray device in advance to enhance heat dissipation for the target heat exchanger.

[0074] In one implementation, if the current operating power of the wind turbine is greater than a first power threshold, and the current cooling medium temperature of the target heat exchanger is less than or equal to a first dielectric temperature threshold, it indicates that the target heat dissipation data does not meet the current triggering condition. The system can then further determine whether the target heat dissipation data meets the predicted triggering condition. Specifically, the system can compare the first dielectric temperature threshold with a second dielectric temperature threshold to determine whether the second dielectric temperature threshold is greater than the first dielectric temperature threshold.

[0075] Typically, if the system predicts that the cooling medium temperature of the target heat exchanger will rise further at a specified future time, it sets a second temperature threshold for the target heat exchanger, which is larger than the first temperature threshold, to avoid frequent start-stop cycles of the spray device due to short-term fluctuations. Therefore, if the second temperature threshold is greater than the first temperature threshold, it indicates that the cooling medium temperature of the target heat exchanger will continue to rise. To avoid delays in heat dissipation response, the system can activate the spray device in advance to enhance heat dissipation from the target heat exchanger. The liquid spray volume of the spray device can be calculated based on the difference between the second and first temperature thresholds. The specific calculation method is similar to how the system calculates the liquid spray volume based on the difference between the current ambient temperature of the target heat exchanger's location and the first ambient temperature threshold, and will not be elaborated here.

[0076] Correspondingly, if the system predicts that the cooling medium temperature of the target heat exchanger will decrease at a specified future time, then to avoid frequent start-stop of the spray device due to short-term fluctuations, the system will set a second temperature threshold for the target heat exchanger, which is smaller than the first temperature threshold. Therefore, if the second temperature threshold is less than or equal to the first temperature threshold, it indicates that the cooling medium temperature of the target heat exchanger will decrease, and the target heat exchanger can meet the heat dissipation requirements at the specified future time. Thus, the system can determine that the target heat dissipation data does not meet the prediction triggering conditions, and the system does not need to activate the spray device in advance to enhance heat dissipation of the target heat exchanger.

[0077] It should be noted that the specific value of the future specified time can be set based on empirical values. For example, the future specified time can be set to the 30th minute after the current time. This application does not impose any restrictions on this.

[0078] In one implementation, if the current cooling medium temperature of the target heat exchanger is greater than a first medium temperature threshold, and the current ambient temperature of the area where the target heat exchanger is located is less than or equal to a first ambient temperature threshold, it indicates that the target heat dissipation data does not meet the current triggering conditions. The system can then further determine whether the target heat dissipation data meets the predicted triggering conditions. Specifically, the system can compare the first ambient temperature threshold with a second ambient temperature threshold to determine whether the second ambient temperature threshold is greater than the first ambient temperature threshold.

[0079] Typically, if the system predicts that the ambient temperature in the area where the target heat exchanger is located will rise further at a specified future time, it will set a second ambient temperature threshold for the target heat exchanger, which is larger than the first ambient temperature threshold, to avoid frequent start-stop cycles of the spray system due to short-term fluctuations. Therefore, if the second ambient temperature threshold is greater than the first, it indicates that the ambient temperature in the area where the target heat exchanger is located will continue to rise. To avoid delays in heat dissipation response, the system can activate the spray system in advance to enhance heat dissipation from the target heat exchanger. The liquid spray volume of the spray system can be calculated based on the difference between the second and first ambient temperature thresholds. The specific calculation method is similar to how the system calculates the liquid spray volume based on the difference between the current ambient temperature in the area where the target heat exchanger is located and the first ambient temperature threshold, and will not be elaborated here.

[0080] Correspondingly, if the second ambient temperature threshold is less than or equal to the first ambient temperature threshold, it means that the ambient temperature in the area where the target heat exchanger is located will decrease, and the target heat exchanger can meet the heat dissipation requirements at a specified time in the future. Therefore, the system can determine that the target heat dissipation data does not meet the prediction triggering conditions, and the system does not need to turn on the spray device in advance to enhance the heat dissipation of the target heat exchanger.

[0081] In one implementation, if the current cooling medium temperature of the target heat exchanger is greater than a first temperature threshold, and the current operating power of the wind turbine is less than or equal to a first power threshold, it indicates that the target heat dissipation data does not meet the current triggering condition. The system can then further determine whether the target heat dissipation data meets the predicted triggering condition. Specifically, the system can compare the first power threshold with a second power threshold to determine whether the second power threshold is greater than the first power threshold.

[0082] Typically, if the system predicts that the operating power of the wind turbine will increase at a future specified time, the heat generated by the wind turbine will also increase. To avoid frequent start-stop of the spray system due to short-term fluctuations, the system sets a second power threshold for the wind turbine, which is larger than the first power threshold. Therefore, if the second power threshold is greater than the first power threshold, it indicates that the heat generated by the wind turbine will increase. To avoid delays in heat dissipation response, the system can activate the spray system in advance to enhance heat dissipation for the target heat exchanger. The liquid spray volume of the spray system can be calculated based on the difference between the second power threshold and the first power threshold. The specific calculation method is similar to how the system calculates the liquid spray volume based on the difference between the current ambient temperature and the first ambient temperature threshold of the area where the target heat exchanger is located, and will not be elaborated here.

[0083] Correspondingly, if the second power threshold is less than or equal to the first power threshold, it means that the heat generated by the wind turbine will decrease, and the target heat exchanger can meet the heat dissipation requirements at a future specified time. Therefore, the system can determine that the target heat dissipation data does not meet the prediction triggering conditions, and the system does not need to turn on the spray device in advance to enhance the heat dissipation of the target heat exchanger.

[0084] Please see Figure 2 This application also provides a cooling control device for a wind turbine heat exchange system, wherein the heat exchange system includes at least one heat exchanger integrated into the wind turbine, and the cooling control device includes:

[0085] The data acquisition module is used to acquire the operating condition data of the wind turbine and the heat dissipation data of each heat exchanger;

[0086] The trigger condition generation module is used to generate spray trigger conditions for any target heat exchanger among the heat exchangers, based on the operating condition data and the heat dissipation data of each heat exchanger.

[0087] The spray volume calculation module is used to determine the liquid spray volume of the target cooling area based on the target heat dissipation data of the target heat exchanger and / or the operating condition data, wherein the target cooling area includes the surface area of ​​the target heat exchanger and / or the air heat exchange area near the target heat exchanger.

[0088] Please see Figure 4 and Figure 5 This application also provides a cooling control device for a wind turbine heat exchange system. The cooling control device includes a detection module, a spray device 20, a control module 30, a liquid storage tank 40, a flow meter 80, and a first valve. The detection module is used to acquire the operating condition data of the wind turbine and the heat dissipation data of each heat exchanger 90. The control module 30 is used to generate spray trigger conditions for any target heat exchanger among the heat exchangers 90 based on the operating condition data and the heat dissipation data of each heat exchanger 90. When the spray trigger conditions are met, the control module 30 determines the liquid spray volume of the target cooling area based on the target heat dissipation data and / or operating condition data of the target heat exchanger. The target cooling area includes the surface area of ​​the target heat exchanger and / or the air heat exchange area near the target heat exchanger. The liquid storage tank 40 is used to store liquid. The first end of the flow meter 80 is connected to the outlet of the liquid storage tank 40. The inlet of the first valve is connected to the second end of the flow meter 80, and each branch port of the first valve is connected to each spray device. The spray device 20 is used to spray liquid onto the target cooling area.

[0089] In this embodiment, the control module 30 can provide a suitable spray volume to the target cooling area according to the actual heat dissipation requirements of the wind turbine generator set, thereby enhancing the cooling effect of the heat exchanger 90 and avoiding liquid waste.

[0090] For example, the spray device 20 can be installed inside or outside the wind turbine generator set, and the spray device 20 can also be installed at the air inlet of the heat exchanger 90. The control module 30 can be integrated into the wind turbine generator set or into electronic devices, etc.

[0091] The cooling control device also includes a first filter device 50 and a second filter device 60. A liquid storage tank 40 is used to store liquid. A first end of the first filter device 50 is used to inject liquid, and a second end of the first filter device 50 is connected to the first end of the liquid storage tank 40. A first end of the second filter device 60 is connected to the second end of the liquid storage tank 40, and a second end of the second filter device 60 is connected to the spray device 20.

[0092] In this embodiment, the first filter device 50 can perform initial filtration on the liquid entering the storage tank 40 to prevent impurities from entering the storage tank 40. The second filter device 60 can perform secondary filtration on the liquid flowing from the storage tank 40 to the spray device 20 to avoid problems such as clogging of the spray pipes, thereby improving the reliability of the cooling control device.

[0093] For example, the filtration accuracy of the first filter device 50 may be less than that of the second filter device 60. The liquid storage tank 40 may include a water storage tank, a water storage bucket, etc. The liquid may include rainwater, condensate, and other water resources, thereby improving the recycling of water resources.

[0094] In one embodiment, the cooling control device further includes a bio-sterilizer 41 and a level gauge 42. The bio-sterilizer 41 is disposed inside the liquid storage tank 40 and is electrically connected to the control module 30. The bio-sterilizer 41 is used to sterilize the liquid. The level gauge 42 is disposed inside the liquid storage tank 40 and is electrically connected to the control module 30. The level gauge 42 is used to detect the liquid level.

[0095] In this embodiment, since the liquid inside the storage tank 40 is prone to deterioration, a biological disinfection device 41 is installed to biologically disinfect the liquid and prevent microorganisms from clogging the spray pipes. Simultaneously, a level gauge 42 is installed; when the level gauge 42 detects a low liquid level in the storage tank 40, it can trigger an alarm or send a notification message to remind the user to add more liquid.

[0096] For example, the level gauge 42 transmits a level signal to the control module 30. When the control module 30 determines that the level signal is higher than the level threshold, it controls the biological disinfection device 41 to start biological disinfection of the liquid in order to control the microbial content of the liquid in the storage tank 40.

[0097] In one embodiment, the cooling control device further includes a high-pressure pump. A first end of the high-pressure pump is connected to a second end of the liquid storage tank 40, and the second end of the high-pressure pump is connected to the spray device 20. The control end of the high-pressure pump is electrically connected to a control module 30. The control module 30 is used to control the pumping rate of the high-pressure pump 40 according to the liquid spraying rate.

[0098] In this embodiment, by setting a high-pressure pump, the control module controls the pumping volume of the high-pressure pump to provide a suitable spray volume to the heat exchanger 90, thereby improving the reliability of the cooling control device.

[0099] For example, the high-pressure pump can be located between the second filter device 60 and the spray device 20, or it can be located between the liquid storage tank 40 and the second filter device 60.

[0100] For example, when the control module 30 detects that the liquid level signal of the level gauge 42 is lower than the liquid level threshold, it will control the high-pressure pump to lock out for protection, preventing damage to the high-pressure pump. Simultaneously, it will control the biological disinfection device 41 to stop starting or reduce its starting frequency. When the liquid level signal of the level gauge 42 is detected to be lower than the liquid level threshold, and the high-pressure pump is running, a warning message can be issued to remind personnel to take action.

[0101] In one embodiment, the high-pressure pump includes a variable frequency water pump 71, the control terminal of which is electrically connected to the control module 30. The control module 30 is used to control the operating frequency of the variable frequency water pump 71 according to the liquid spraying volume.

[0102] In this embodiment, the control module can control the pumping volume of the variable frequency water pump by adjusting the operating frequency and speed of the variable frequency water pump. This avoids excessive pumping volume causing liquid waste, and also avoids insufficient pumping volume causing insufficient cooling, thereby improving the reliability of the cooling control device.

[0103] In one embodiment, the high-pressure pump includes a power frequency water pump 72 and a multi-way valve 73. The first end of the power frequency water pump 72 is connected to the second end of the liquid storage tank 40. The control terminal of the power frequency water pump 72 is electrically connected to the control module 30. The first end of the multi-way valve 73 is connected to the second end of the power frequency water pump 72, the second end of the multi-way valve 73 is connected to the spraying device 20, and the third end of the multi-way valve 73 is connected to the third end of the liquid storage tank 40. The control terminal of the multi-way valve 73 is electrically connected to the control module 30. The control module 30 is used to control the start and stop of the power frequency water pump 72 and the valve opening degree of the multi-way valve 73 based on operating condition data and spray trigger thresholds.

[0104] In this embodiment, since the pumping volume of the power frequency water pump is fixed per unit time, in order to avoid liquid waste, a multi-way valve is set up, and by adjusting the opening of the second and third ends of the multi-way valve, not only can a suitable spray volume be provided by the spray device, but also the additional pumping volume can be diverted to the liquid storage tank 40, thus avoiding liquid waste and improving the reliability of the cooling control device.

[0105] For example, the high-pressure pump may also include only the power frequency water pump 72. In this case, the second end of the power frequency water pump 72 is connected to the spray device 20, and the liquid storage tank 40 does not have a third end.

[0106] In one embodiment, the cooling control device further includes a first pressure sensor P1 and a second pressure sensor P2. The first pressure sensor P1 is connected to a first end of the high-pressure pump. The second pressure sensor P2 is connected to a second end of the high-pressure pump. The control module 30 is electrically connected to both the first pressure sensor P1 and the second pressure sensor P2.

[0107] In this embodiment, by setting a first pressure sensor and a second pressure sensor at the first and second ends of the high-pressure pump respectively, the control module can determine whether the high-pressure pump is blocked, abnormal or damaged based on the pressure difference between the first pressure sensor and the second pressure sensor, thereby improving the reliability of the cooling control device.

[0108] For example, when the pressure difference between the first pressure sensor P1 and the second pressure sensor P2 is less than a first pressure difference threshold, there may be a risk of damage; when it is greater than a second pressure difference threshold, there may be a risk of blockage. When the above risks exist, the control module 30 can issue blockage information, abnormal status information, etc., and provide maintenance personnel with the necessary information.

[0109] For example, when the high-pressure pump is located between the second filter device 60 and the spray device 20, a third pressure sensor P3 may also be provided at the first end of the second filter device 60, and the third pressure sensor P3 is electrically connected to the control module 30. The control module 30 can determine whether the second filter device 60 is blocked based on the pressure difference between the second pressure sensor P2 and the third pressure sensor P3.

[0110] In one embodiment, the cooling control device further includes a flow meter 80, which is disposed between the spray device 20 and the high-pressure pump and is electrically connected to the control module 30.

[0111] In this embodiment, by setting a flow meter, it is possible to monitor whether the spray volume of the spray is abnormal, thereby improving the accuracy of the cooling control device.

[0112] In one embodiment, the detection module includes a power detection module 11, which is disposed on the wind turbine generator set and electrically connected to the control module 30. The power detection module 11 is used to detect the operating power of the wind turbine generator set.

[0113] In this embodiment, the heat dissipation requirements of the heat exchanger 90 change as the operating power of the wind turbine generator changes. By setting a power detection module, the operating power can be determined, and the spray volume can be adjusted according to the operating power to enhance the cooling of the heat exchanger 90, thereby improving the accuracy of the cooling control device.

[0114] In one embodiment, the detection module includes a first temperature detection module 12, which is disposed at the outlet or inlet end of the heat exchanger 90 and is electrically connected to the control module 30. The first temperature detection module 12 is used to detect the temperature of the cooling medium at the outlet or inlet end.

[0115] Since the medium temperature at the outlet of heat exchanger 90 can characterize the heat dissipation requirements of the wind turbine generator set, and the medium at the outlet of heat exchanger 90 is the coolant after the heat exchanger 90 has cooled, when the medium temperature at the outlet is high, the cooling effect of heat exchanger 90 on the coolant is poor, requiring enhanced cooling of heat exchanger 90. By setting up a first temperature detection module 12, the spray volume is adjusted according to the medium temperature to enhance the cooling of heat exchanger 90 accordingly, thereby improving the accuracy of the cooling control device.

[0116] For example, the first temperature detection module 12 can also be set in other parts such as the heat exchanger 90 for temperature detection. As long as the medium temperature at the inlet end and outlet end of the heat exchanger 90 can be detected directly or indirectly, the first temperature detection module 12 can be set. This will not be elaborated here.

[0117] In one embodiment, the detection module includes a second temperature detection module 13, which is electrically connected to the control module 30. The second temperature detection module 13 is used to detect the external temperature.

[0118] In this embodiment, since the ambient temperature can characterize the heat dissipation requirements of the wind turbine generator set, the ambient temperature can be determined by setting a second temperature detection module 13. The spray volume can be adjusted according to the ambient temperature to enhance the cooling of the heat exchanger 90, thereby improving the accuracy of the cooling control device.

[0119] In one embodiment, the wind turbine may also be equipped with a track that passes through each heat exchanger 90. A spray device can be movably connected to the track and can move along the track under the drive of a drive device. In this way, the system can control the spray device to move to the vicinity of the corresponding heat exchanger 90 to spray liquid according to the actual heat dissipation needs of each heat exchanger 90. Through this solution, multiple heat exchangers 90 can be enhanced with a single spray device, effectively saving costs.

[0120] Please see Figure 3 This application also provides a cooling control device for a wind turbine heat exchange system. The cooling control device includes a memory and a processor. The memory stores a computer program, and when the computer program is executed by the processor, the cooling control method described above can be implemented. Specifically, at the hardware level, the cooling control device may include a processor, an internal bus, and a memory. The memory may include main memory and non-volatile memory. The processor reads the corresponding computer program from the non-volatile memory into main memory and then runs it. Those skilled in the art will understand that... Figure 3 The structure shown is for illustrative purposes only and does not limit the structure of the cooling control device described above. For example, the cooling control device may also include components that are more... Figure 3 The components shown may include more or fewer components, such as other processing hardware like a GPU (Graphics Processing Unit) or external communication ports. Of course, this application does not exclude other implementation methods besides software implementations, such as logic devices or a combination of hardware and software.

[0121] In this embodiment, the processor may include a central processing unit (CPU) or a graphics processing unit (GPU), and may also include other microcontrollers, logic gates, integrated circuits, or appropriate combinations thereof with logic processing capabilities. The memory described in this embodiment can be a storage device for storing information. In digital systems, a device capable of storing binary data can be a memory; in integrated circuits, a circuit without physical form but with storage function can also be a memory, such as a ROM or FIFO; in a system, a storage device with physical form can also be called a memory. In implementation, this memory can also be implemented using a cloud storage method; the specific implementation method is not limited in this specification.

[0122] It should be noted that the specific implementation of the cooling control device in this specification can be found in the description of the method implementation method, and will not be elaborated here.

[0123] Therefore, the technical solution provided in this application establishes a dual control mechanism: "spraying is activated when trigger conditions are met" and "spraying volume is matched according to actual heat dissipation needs," by collecting operating condition data of the wind turbine and heat dissipation data of each heat exchanger. The system only activates spraying when the target heat exchanger has a genuine heat dissipation need, and the spraying volume is dynamically adjusted according to the actual heat dissipation needs of the target heat exchanger. This not only solves the water waste problem in traditional spraying schemes but also highly matches the actual heat dissipation needs of the target heat exchanger, effectively improving its heat exchange efficiency. The technical solution provided in this application not only significantly saves water consumption in the spraying device but also effectively improves its heat exchange efficiency by precisely matching the heat dissipation needs of the target heat exchanger.

[0124] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0125] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cooling control device for a wind turbine heat exchange system, characterized in that, The cooling control device includes: The detection module is used to acquire the operating condition data of the wind turbine and the heat dissipation data of each heat exchanger; The control module is used to generate a spraying trigger condition for any target heat exchanger among the heat exchangers based on the operating condition data and the heat dissipation data of each heat exchanger, and when the spraying trigger condition is met, determine the liquid spraying volume of the target cooling area according to the target heat dissipation data of the target heat exchanger and / or the operating condition data, wherein the target cooling area includes the surface area of ​​the target heat exchanger and / or the air heat exchange area near the target heat exchanger; A liquid storage tank, the liquid storage tank being used to store liquid; A flow meter, the first end of which is connected to the outlet of the liquid storage tank; The first valve has its inlet connected to the second end of the flow meter, and each branch port of the first valve is connected to each spray device. A spraying device is provided near the heat exchanger of the wind turbine generator set and is used to spray liquid onto the target cooling area.

2. The cooling control device according to claim 1, characterized in that, The cooling control device also includes: A liquid storage tank, the liquid storage tank being used to store liquid; A first filter device, wherein a first end of the first filter device is used to inject the liquid, and a second end of the first filter device is connected to the first end of the liquid storage tank; The second filter device has a first end connected to the second end of the liquid storage tank and a second end connected to the spray device.

3. The cooling control device according to claim 2, characterized in that, The cooling control device also includes: A biological disinfection device is installed inside the liquid storage tank and is electrically connected to the control module; the biological disinfection device is used to disinfect the liquid. A level gauge is installed inside the liquid storage tank and is electrically connected to the control module; the level gauge is used to detect the liquid level.

4. The cooling control device according to claim 2, characterized in that, The cooling control device also includes: A high-pressure pump, wherein the first end of the high-pressure pump is connected to the second end of the liquid storage tank, the second end of the high-pressure pump is connected to the spraying device, and the control end of the high-pressure pump is electrically connected to the control module; The control module is used to control the pumping volume of the high-pressure pump according to the amount of liquid sprayed.

5. The cooling control device according to claim 4, characterized in that, The high-pressure pump includes a variable frequency water pump, and the control terminal of the variable frequency water pump is electrically connected to the control module; the control module is used to control the operating frequency of the variable frequency water pump according to the liquid spraying volume.

6. The cooling control device according to claim 4, characterized in that, The high-pressure pump includes: A power frequency water pump, wherein the first end of the power frequency water pump is connected to the second end of the liquid storage tank; the control end of the power frequency water pump is electrically connected to the control module; A multi-way valve, wherein the first end of the multi-way valve is connected to the second end of the industrial frequency water pump, the second end of the multi-way valve is connected to the spray device, and the third end of the multi-way valve is connected to the third end of the liquid storage tank; the control end of the multi-way valve is electrically connected to the control module. The control module is used to control the start and stop of the power frequency water pump and the valve opening degree of the multi-way valve according to the liquid spraying volume.

7. The cooling control device according to claim 4, characterized in that, The cooling control device also includes: A first pressure sensor is connected to a first end of the high-pressure pump. A second pressure sensor is connected to the second end of the high-pressure pump. The control module is electrically connected to both the first pressure sensor and the second pressure sensor.

8. The cooling control device according to any one of claims 1 to 7, characterized in that, The detection module includes: A power detection module, wherein the power detection module is disposed in the wind turbine generator set and electrically connected to the control module, the power detection module is used to detect the operating power of the wind turbine generator set; and / or, A first temperature detection module is located at the outlet / inlet end of the heat exchanger and is electrically connected to the control module. The first temperature detection module is used to detect the temperature of the cooling medium at the outlet / inlet end.

9. The cooling control device according to claim 8, characterized in that, The detection module also includes: The second temperature detection module is electrically connected to the control module and is used to detect the external temperature.

10. A wind turbine generator set, characterized in that, Includes the cooling control device as described in any one of claims 1 to 9.

Images