A method, device, system and storage medium for controlling the opening degree of an indirect cooling tower shutter

Abstract

The application discloses a kind of indirect air cooling tower louver opening degree control method, device, system and storage medium, applied to indirect air cooling technical field, the method includes: obtaining the actual opening degree of current angle sensor detection louver, the target opening degree of last period louver and the data of influencing heat dissipation factor;And calculate to obtain the target opening degree of next period louver;The opening degree of louver is adjusted to the target opening degree of next period louver, and whether the current louver opening degree is in preset interval using angle sensor detection;If in preset interval, stop adjusting;If not in preset interval, continue adjusting, until the current louver opening degree is in preset interval.This method detects louver opening degree directly through angle sensor, improves detection accuracy, and also calculates the optimal opening degree of louver, realizes the accurate control of louver, improves the anti-freezing capacity of indirect air cooling tower, the safety and economy of generator unit.

Description

Technical Field

[0001] This invention relates to the field of indirect air cooling technology, and in particular to a method, device, system and storage medium for controlling the opening degree of louvers in an indirect cooling tower. Background Technology

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

[0003] The cooling triangle is placed vertically at the bottom of the indirect cooling tower, and louvers are used to regulate the air intake and thus the temperature of the circulating water. However, due to long-term vibration or strong winds, the nuts on the louvers may loosen, causing changes in the position of the drive rod and resulting in inconsistent louver openings, which are difficult for on-site personnel to detect in a timely manner. Currently, the louver opening is generally controlled by an electric actuator. However, due to the numerous mechanical components within the electric actuator, such as connecting rods and push rods, the louver opening may not reach the expected opening, and it is difficult to ensure the consistency of the opening of each louver. In cold winter regions, inconsistent louver openings can lead to inconsistent air intake, resulting in localized excessively low temperatures in the cooling triangle and freezing and cracking of the tube bundles, which can affect the safety of the indirect cooling tower and the generator set.

[0004] Therefore, at present, there is a lack of detection devices for the opening of louvers in indirect cooling towers, and the problem of not being able to accurately control the opening of louvers is also present. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a method for controlling the opening degree of louvers in an indirect cooling tower, and to install...

[0006] The device, system, and storage medium solve the problems of inaccurate louver opening detection and difficulty in ensuring control precision in existing intermediate cooling towers.

[0007] To solve the above-mentioned technical problems, the present invention provides a method for controlling the opening degree of louvers in an indirect cooling tower, comprising:

[0008] Acquire data on the actual opening degree of the louvers detected by the current angle sensor, the target opening degree of the louvers in the previous cycle, and factors affecting heat dissipation.

[0009] Based on the actual opening, the target opening of the louvers in the previous cycle, and the data on factors affecting heat dissipation, the target opening of the louvers in the next cycle is calculated.

[0010] The opening of the blinds is adjusted to the target opening of the blinds in the next cycle, and the angle sensor is used to detect whether the current opening of the blinds is within a preset range; the preset range is set according to the target opening of the blinds in the next cycle and the allowable error.

[0011] If the value is within the preset range, then the adjustment is stopped;

[0012] If the opening is not within the preset range, continue adjusting until the current venetian blind opening is within the preset range.

[0013] Optionally, calculating the target opening of the louvers for the next cycle based on the actual opening, the target opening of the louvers in the previous cycle, and the data on factors affecting heat dissipation includes:

[0014] The cooling coefficient temperature difference change rate is calculated based on the inlet water temperature, outlet water temperature, ambient temperature, and outlet water temperature setpoint.

[0015] The average opening of the sector louvers is calculated based on the actual opening.

[0016] The louver opening correction coefficient is calculated based on the target opening degree of the louver in the previous cycle and the actual opening degree.

[0017] The load correction factor is set according to the rate of change in power generation;

[0018] The correction factor for the change in circulating water volume is calculated based on the number of operational sectors, the total number of sectors, and the initial circulating water volume change correction factor.

[0019] The target opening of the louvers for the next cycle is calculated based on the cooling coefficient temperature difference change rate, the average opening of the sector louvers, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient.

[0020] Optionally, calculating the target opening of the louvers for the next cycle based on the cooling coefficient temperature difference change rate, the average opening of the sector louvers, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient includes:

[0021]

[0022] Where H3 represents the average opening of the sector louvers, R represents the cooling coefficient temperature difference change rate, K represents the circulating water volume change correction coefficient, M represents the load correction coefficient, H represents the louver opening detection correction coefficient, and Y represents the target opening of the louvers in the next cycle.

[0023] The present invention also provides a device for controlling the opening degree of louvers in an indirect cooling tower, comprising:

[0024] The acquisition module is used to acquire the actual opening degree of the louvers detected by the current angle sensor, the target opening degree of the louvers in the previous cycle, and data on factors affecting heat dissipation.

[0025] The target opening calculation module is used to calculate the target opening of the louvers in the next cycle based on the actual opening, the target opening of the louvers in the previous cycle, and the data on the factors affecting heat dissipation.

[0026] The opening adjustment module is used to adjust the opening of the venetian blinds to the target opening of the venetian blinds in the next cycle, and to use the angle sensor to detect whether the current opening of the venetian blinds is within a preset range; the preset range is set according to the target opening of the venetian blinds in the next cycle and the allowable error.

[0027] The first result module is used to stop the adjustment if the result is within the preset range;

[0028] The second result module is used to continue adjusting if the current veil opening is not within the preset range, until the current veil opening is within the preset range.

[0029] The present invention also provides a louver opening control system for an indirect cooling tower, comprising:

[0030] Multiple angle sensors installed on the louver blades are used to detect the opening degree of the louvers;

[0031] A switching power supply is used to power the angle sensor;

[0032] A control computer is used to execute the steps of the above-described method for controlling the opening degree of the louvers in the indirect cooling tower;

[0033] Fiber optic transceivers are used to receive and transmit signals from the control computer. The fiber optic transceivers include fiber optic transceivers at the equipment room end and fiber optic transceivers at the non-equipment room end. The fiber optic transceivers at the non-equipment room end are connected to the fiber optic transceivers at the equipment room end through signal switching nodes in the tower optical distribution box and the equipment room optical distribution box. The fiber optic transceivers at the equipment room end are connected to the control computer.

[0034] Optionally, the plurality of angle sensors mounted on the louver slats include:

[0035] An angle sensor is installed on the louvers at predetermined intervals of a number of slats, and the angle sensors are connected in a chain.

[0036] Optionally, the angle sensor is installed in a groove in the middle of the louver blade.

[0037] Optionally, the fiber optic transceiver is a 485 fiber optic transceiver, used to convert RS-485 signals into optical signals for transmission.

[0038] Optional, also includes:

[0039] The workstation computer is used to remotely monitor the opening status of each louver via a local area network.

[0040] The present invention also provides a storage medium storing computer-executable instructions, which, when loaded and executed by a processor, implement the steps of the above-described method for controlling the opening degree of the louvers of an indirect cooling tower.

[0041] As can be seen, this invention acquires data on the actual opening degree of the louvers detected by the current angle sensor, the target opening degree of the louvers in the previous cycle, and data on factors affecting heat dissipation. Based on the actual opening degree, the target opening degree of the louvers in the previous cycle, and the data on factors affecting heat dissipation, it calculates the target opening degree of the louvers in the next cycle. The opening degree of the louvers is adjusted to the target opening degree of the louvers in the next cycle, and the angle sensor is used to detect whether the current louver opening degree is within a preset range. The range is set according to the target opening degree of the louvers in the next cycle and the allowable error. If it is within the preset range, the adjustment stops; if it is not within the preset range, the adjustment continues until the current louver opening degree is within the preset range. This method directly detects the louver opening degree through an angle sensor and further obtains the optimal opening degree of the louvers based on data on factors affecting heat dissipation, achieving precise control of the louvers. This ensures that the louver opening degree reaches the optimal and remains consistent, effectively avoiding the safety risks of excessively low local temperatures in the cooling triangle and freezing cracks of the tube bundles caused by inconsistent louver opening degrees in winter. This improves the anti-freezing capability of the indirect cooling tower and the safety and economy of the generator set.

[0042] In addition, the present invention also provides a device, system and medium for controlling the opening degree of louvers in an indirect cooling tower, which also has the above-mentioned beneficial effects. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0044] Figure 1 A flowchart illustrating a method for controlling the opening degree of louvers in an indirect cooling tower, as provided in an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of a louver opening control device for an indirect cooling tower provided in an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of a louver opening control system for an indirect cooling tower provided in an embodiment of the present invention;

[0047] Figure 4 This is a front view of the installation position of an angle sensor provided in an embodiment of the present invention;

[0048] Figure 5 A top view of the installation position of an angle sensor provided in an embodiment of the present invention;

[0049] Figure 4 and Figure 5 The accompanying figure labels are as follows:

[0050] 1-Veneer blade; 2-Sensor mounting slot; 3-Sensor cable. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] Please refer to Figure 1 , Figure 1 A flowchart illustrating a method for controlling the opening degree of louvers in an indirect cooling tower, as provided in an embodiment of the present invention. The method may include:

[0053] S101: Acquire data on the actual opening degree of the louvers detected by the current angle sensor, the target opening degree of the louvers in the previous cycle, and the factors affecting heat dissipation.

[0054] This embodiment utilizes an angle sensor to directly detect the opening degree of the louvers, which improves detection accuracy and precision compared to existing technologies that indirectly detect the opening degree using an actuator. The angle sensor is mounted on the louver blades. In this embodiment, the target opening degree of the louvers in the previous cycle is calculated based on data from the previous cycle. The data affecting heat dissipation in this embodiment can be temperature-related data; power generation-related data; sector-related data; circulating water volume-related data; or any combination of the above-mentioned data.

[0055] S102: Calculate the target opening of the louvers for the next cycle based on the actual opening, the target opening of the louvers in the previous cycle, and data on factors affecting heat dissipation.

[0056] This embodiment uses the obtained current actual opening degree, the target opening degree of the previous cycle, and data on factors affecting heat dissipation to calculate the target opening degree of the next cycle.

[0057] Furthermore, to improve the accuracy of the target opening degree for the next cycle, the above-mentioned calculation of the target opening degree of the louvers for the next cycle based on the actual opening degree, the target opening degree of the louvers in the previous cycle, and data on factors affecting heat dissipation may include the following steps:

[0058] Step 21: Calculate the cooling coefficient temperature difference change rate based on the inlet water temperature, outlet water temperature, ambient temperature, and outlet water temperature setpoints.

[0059] The specific calculation formula is as follows:

[0060]

[0061] Where R represents the cooling coefficient temperature difference change rate, T1 represents the inlet water temperature, T2 represents the outlet water temperature, T3 represents the ambient temperature, and T4 represents the outlet water temperature setpoint.

[0062] Step 22: Calculate the average opening of the sector louvers based on the actual opening.

[0063] The average opening is calculated based on the actual opening detected by the sensors at each angle.

[0064] Step 23: Calculate the blind opening correction coefficient based on the target opening and actual opening of the blinds in the previous cycle.

[0065] The specific calculation formula is as follows:

[0066] H = H_1 - H_2;

[0067] Where H is the correction coefficient for venetian blind opening detection, H_1 represents the target opening of the venetian blind in the previous cycle, and H_2 represents the actual opening of the venetian blind detected by the angle sensor.

[0068] Step 24: Set the load correction factor based on the rate of change in power generation.

[0069] When power generation changes, a load change correction coefficient is set according to the rate of change of power generation. The rate of change of power generation is E_i (i = 1, 2, 3... representing the rate of change of power generation), and the corresponding load change correction coefficient is M_i (i = 1, 2, 3...).

[0070] Step 25: Calculate the circulating water volume change correction coefficient based on the number of operational sectors, the total number of sectors, and the initial circulating water volume change correction coefficient.

[0071] The specific calculation formula is as follows:

[0072]

[0073]

[0074] Wherein, K represents the circulating water volume change correction coefficient; K1 represents the initial circulating water volume change correction coefficient, which is set according to the circulating pump operating status, and different circulating pump operating statuses correspond to different circulating water volume change correction coefficients K1; N represents the sector commissioning coefficient; N1 represents the number of commissioned sectors; N2 represents the total number of sectors.

[0075] Step 26: Calculate the target opening of the louvers for the next cycle based on the cooling coefficient temperature difference change rate, the average opening of the sector louvers, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient.

[0076] Furthermore, to further improve the accuracy of the target opening calculation for the next cycle, the above-mentioned calculation of the target opening of the louvers for the next cycle based on the cooling coefficient temperature difference change rate, the average opening of the sector louvers, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient may include the following steps, specifically including:

[0077] Y = H3*(1-R)*K+M+H;

[0078] Where H3 represents the average opening of the sector louvers, R represents the cooling coefficient temperature difference change rate, K represents the circulating water volume change correction coefficient, M represents the load correction coefficient, H represents the louver opening detection correction coefficient, and Y represents the target opening of the louvers in the next cycle.

[0079] This embodiment provides a specific formula for calculating the target opening of the louvers in the next cycle. Based on the cooling coefficient temperature difference change rate, the average opening of the sector louvers, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient, the target opening of the louvers in the next cycle is calculated.

[0080] S103: Adjust the opening of the venetian blinds to the target opening of the venetian blinds in the next cycle, and use an angle sensor to detect whether the current opening of the venetian blinds is within the preset range; the preset range is set according to the target opening of the venetian blinds in the next cycle and the allowable error.

[0081] In this embodiment, upon calculating the target opening degree of the venetian blinds for the next cycle, the control of the venetian blinds' opening degree begins. The actuator can be controlled to adjust the venetian blinds' opening degree to the target degree. Simultaneously, an angle sensor monitors the adjustment in real time. This embodiment allows for a certain degree of error between the final actual adjusted venetian blind opening degree and the target opening degree, as long as it is within the allowable error range. This embodiment does not limit the value of the allowable error and can set it according to the actual situation.

[0082] S104: Stop adjusting.

[0083] In this embodiment, the adjustment can be stopped when the angle sensor detects that the adjusted louver opening is within a preset range.

[0084] S105: Continue adjusting until the current louver opening is within the preset range.

[0085] In this embodiment, if the angle sensor detects that the adjusted louver opening is not within the preset range, further adjustment is required. The adjustment step can be reduced until the opening meets the preset range.

[0086] The method for controlling the opening of louvers in an indirect cooling tower, as provided in this embodiment of the invention, involves acquiring data on the actual opening of the louvers detected by the current angle sensor, the target opening of the louvers in the previous cycle, and data on factors affecting heat dissipation. Based on the actual opening, the target opening of the louvers in the previous cycle, and the data on factors affecting heat dissipation, the target opening of the louvers in the next cycle is calculated. The opening of the louvers is adjusted to the target opening of the louvers in the next cycle, and the angle sensor is used to detect whether the current opening of the louvers is within a preset range. The preset range is set based on the target opening of the louvers in the next cycle and the allowable error. If the opening is within the preset range, the adjustment stops; if it is not within the preset range, the adjustment continues until the current opening of the louvers is within the preset range. This method directly detects the louver opening using an angle sensor and further determines the optimal louver opening based on data affecting heat dissipation. This achieves precise louver control, ensuring the louver opening reaches the optimal and remains consistent. It effectively avoids the safety risks of localized low temperatures in the cooling triangle and tube bundle freezing and cracking caused by inconsistent louver openings in winter, thus improving the antifreeze capability of the indirect cooling tower and the safety and economy of the generator set. Furthermore, this embodiment can utilize the angle sensor to monitor the louver opening in real time, allowing for timely dispatch of inspection personnel for repairs or other measures in case of malfunctions. Moreover, based on the cooling coefficient temperature difference change rate, the average louver opening of the sector, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient, the target louver opening for the next cycle is calculated, improving accuracy.

[0087] The following describes the louver opening control device for the indirect cooling tower provided in the embodiments of the present invention. The louver opening control device for the indirect cooling tower described below can be referred to in correspondence with the louver opening control method for the indirect cooling tower described above.

[0088] Please refer to the details. Figure 2 , Figure 2 A schematic diagram of a louver opening control device for an indirect cooling tower provided in an embodiment of the present invention may include:

[0089] The acquisition module 100 is used to acquire the actual opening degree of the louver detected by the current angle sensor, the target opening degree of the louver in the previous cycle, and data on factors affecting heat dissipation.

[0090] The target opening calculation module 200 is used to calculate the target opening of the louvers in the next cycle based on the actual opening, the target opening of the louvers in the previous cycle, and the data on the factors affecting heat dissipation.

[0091] The opening adjustment module 300 is used to adjust the opening of the venetian blind to the target opening of the venetian blind in the next cycle, and to use the angle sensor to detect whether the current opening of the venetian blind is within a preset range; the preset range is set according to the target opening of the venetian blind in the next cycle and the allowable error.

[0092] The first result module 400 is used to stop adjustment if the result is within a preset range;

[0093] The second result module 500 is used to continue adjusting if the current venetian blind opening is not within the preset range, until the current venetian blind opening is within the preset range.

[0094] Based on the above embodiments, the target opening calculation module 200 may include:

[0095] The cooling coefficient temperature difference change rate calculation unit is used to calculate the cooling coefficient temperature difference change rate based on the inlet water temperature, outlet water temperature, ambient temperature and outlet water temperature setpoints.

[0096] The average opening degree calculation unit for sector louvers is used to calculate the average opening degree of sector louvers based on the actual opening degree.

[0097] The louver opening detection correction coefficient calculation unit is used to calculate the louver opening detection correction coefficient based on the target opening of the louver in the previous cycle and the actual opening.

[0098] The load correction factor setting unit is used to set the load correction factor according to the rate of change of power generation;

[0099] The circulating water volume change correction coefficient calculation unit is used to calculate the circulating water volume change correction coefficient based on the number of operational sectors, the total number of sectors, and the initial circulating water volume change correction coefficient.

[0100] The target opening calculation unit for the next cycle of louvers is used to calculate the target opening of the louvers for the next cycle based on the cooling coefficient temperature difference change rate, the average opening of the sector louvers, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient.

[0101] Based on the above embodiments, the target opening degree calculation unit for the venetian blinds in the next cycle can be specifically used for:

[0102] Y = H3*(1-R)*K+M+H

[0103] Where H3 represents the average opening of the sector louvers, R represents the cooling coefficient temperature difference change rate, K represents the circulating water volume change correction coefficient, M represents the load correction coefficient, H represents the louver opening detection correction coefficient, and Y represents the target opening of the louvers in the next cycle.

[0104] The indirect cooling tower louver opening control device provided in this embodiment of the invention includes: an acquisition module 100 for acquiring the actual opening of the louver detected by the current angle sensor, the target opening of the louver in the previous cycle, and data on factors affecting heat dissipation; a target opening calculation module 200 for calculating the target opening of the louver in the next cycle based on the actual opening, the target opening of the louver in the previous cycle, and data on factors affecting heat dissipation; an opening adjustment module 300 for adjusting the opening of the louver to the target opening of the louver in the next cycle, and using the angle sensor to detect whether the current louver opening is within a preset range; the preset range is set based on the target opening of the louver in the next cycle and the allowable error; a first result module 400 for stopping the adjustment if the opening is within the preset range; and a second result module 500 for continuing the adjustment if the opening is not within the preset range, until the current louver opening is within the preset range. This device directly detects the louver opening using an angle sensor and further determines the optimal louver opening based on data affecting heat dissipation. This achieves precise louver control, ensuring the louver opening is consistently optimal. This effectively avoids the safety risks of localized low temperatures in the cooling triangle and tube bundle freezing and cracking caused by inconsistent louver openings in winter, thus improving the antifreeze capability of the indirect cooling tower and the safety and economy of the generator set. Furthermore, this embodiment can utilize the angle sensor to monitor the louver opening in real time, allowing for timely dispatch of personnel for repairs or other measures in case of malfunctions. Additionally, based on the cooling coefficient temperature difference change rate, the average louver opening in the sector, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient, the target louver opening for the next cycle is calculated, improving accuracy.

[0105] The following describes a louver opening control system for an indirect cooling tower provided by an embodiment of the present invention. The louver opening control system described below can be referred to in correspondence with the louver opening control method described above.

[0106] Please refer to Figure 3 , Figure 3 A schematic diagram of a louver opening control system for an indirect cooling tower provided in an embodiment of the present invention may include:

[0107] Multiple angle sensors 10 are installed on the louver blades to detect the louver opening degree;

[0108] Switching power supply 20 is used to power angle sensor 10;

[0109] The control computer 30 is used to execute the steps of the above-described method for controlling the opening degree of the louvers of the indirect cooling tower;

[0110] Fiber optic transceivers are used to receive and transmit signals from the control computer 30. The fiber optic transceivers include a fiber optic transceiver 41 at the equipment room end and a fiber optic transceiver 42 at the non-equipment room end. The fiber optic transceiver 42 at the non-equipment room end is connected to the fiber optic transceiver 41 at the equipment room end through the signal switching nodes of the tower optical distribution box 50 and the equipment room optical distribution box 60. The fiber optic transceiver 41 at the equipment room end is connected to the control computer 30.

[0111] In this embodiment, multiple angle sensors 10 are installed on the louver blades to detect the opening degree of the louvers. A switching power supply 20 powers the angle sensors 10. Fiber optic transceivers are used to receive and transmit signals from the control computer 30. The fiber optic transceivers can be divided into fiber optic transceivers 41 at the equipment room end and fiber optic transceivers 42 outside the equipment room end. The fiber optic transceivers 42 outside the equipment room end are connected to the fiber optic transceivers 41 at the equipment room end through two signal transfer nodes: the tower optical distribution box 50 and the equipment room optical distribution box 60. Subsequently, all fiber optic transceivers 41 at the equipment room end are connected to the control computer 30. This embodiment does not limit the model or type of the angle sensors 10, nor does it limit the type or model of the fiber optic transceivers. The control computer 30 is used to execute the steps of the above-described method for controlling the opening degree of the louvers in the indirect cooling tower. This embodiment does not limit the control computer 30. For example, it can be a microcontroller or a processor. In this embodiment, the optical distribution boxes are all optical cable junction boxes. They are junction devices that provide optical cable termination and patching for backbone layer optical cables and distribution layer optical cables. They are characterized by being waterproof and dustproof, resistant to insects and rodents, and highly resistant to impact damage, and can withstand relatively harsh environments.

[0112] This embodiment does not limit the number of angle sensors 10 installed on the louvers. For example, one angle sensor 10 can be installed on one louver, or multiple angle sensors 10 can be installed on one louver. For better understanding, please refer to... Figure 3 , Figure 3 The No. 1 louver in the diagram is a group of louvers. This group of louvers can contain one louver, which is equipped with multiple angle sensors 10; or this group of louvers can contain multiple louvers, which are equipped with multiple angle sensors 10.

[0113] Furthermore, the aforementioned multiple angle sensors 10 mounted on the louver blades may include:

[0114] An angle sensor 10 is installed on the louvers at predetermined intervals of a number of slats, and the angle sensors 10 are connected in a chain.

[0115] When multiple angle sensors 10 are to be installed in a single louver, the sensors 10 can be evenly distributed across the louver blades to better detect the louver's opening degree. One angle sensor 10 is installed every preset number of blades, and the angle sensors 10 are interconnected via a daisy-chain communication system. This embodiment does not limit the preset number; it can be set according to actual conditions. For example, one angle sensor 10 can be installed every 10 blades; or one angle sensor 10 can be installed every 15 blades. This embodiment does not limit the specific installation position of the angle sensor 10 on the blades. For example, it can be installed at one end of the blade; or it can be installed in the middle of the blade.

[0116] Furthermore, the aforementioned angle sensor 10 is installed in a groove in the middle of the louver blade.

[0117] To ensure accurate opening detection, this embodiment installs the angle sensor 10 in a groove in the middle of the louver. This embodiment does not limit the size of the groove; however, it is understood that the size of the groove is related to the size of the angle sensor 10. This embodiment does not limit the size of the angle sensor 10. Generally, a groove 3 cm long, 2 cm wide, and 1 cm high is welded in the middle of the louver slats. The angle sensor 10 is placed in the groove and covered with waterproof and insulating adhesive to better protect it. A 4-core wire is then led out, and each angle sensor 10 is connected daisy-chained. (See reference...) Figure 4 and Figure 5 , Figure 4 This is a front view of the installation position of an angle sensor provided in an embodiment of the present invention; Figure 5 This is a top view of an angle sensor installation position provided in an embodiment of the present invention, wherein 1 represents a louver blade, 2 represents a sensor mounting slot, and 3 represents a sensor cable.

[0118] Furthermore, the aforementioned fiber optic transceiver is a 485 fiber optic transceiver, used to convert RS-485 signals into optical signals for transmission.

[0119] The fiber optic transceiver in this embodiment is a 485 fiber optic transceiver, which is a photoelectric conversion device for RS-485 communication. It can convert RS-485 signals into optical signals for transmission and has advantages such as strong anti-interference ability and long transmission distance. The 485 fiber optic transceiver transmits the transmit and receive signals through the tower optical distribution box 50 and the equipment room optical distribution box 60 to the 485 fiber optic transceiver at the equipment room end.

[0120] Furthermore, the aforementioned intercooling tower louver opening control system may also include a workstation computer for remotely monitoring the opening status of each louver via a local area network.

[0121] This embodiment also allows access to the "Intelligent Air-Cooled Tower Platform" via a local area network on a workstation computer, where the opening degree of each cooling triangular louver can also be viewed.

[0122] Furthermore, this embodiment can also utilize a control computer to gather signals and process the status information of the angle sensor 10, save the signals to a database server or memory, and then display them through the "intelligent air-cooled tower platform".

[0123] Of course, it should be noted that, Figure 3 The structure shown does not constitute a limitation on the intercooling tower louver opening control system in the embodiments of the present invention. In practical applications, the intercooling tower louver opening control system may include more than Figure 3 More or fewer components as shown, or combinations of certain components.

[0124] The indirect cooling tower louver opening control system provided in this embodiment of the invention uses multiple angle sensors 10 installed on the louver blades to detect the louver opening; a switching power supply 20 to power the angle sensors 10; a control computer 30 to execute the steps of the above-described indirect cooling tower louver opening control method; and fiber optic transceivers to receive and transmit signals from the control computer 30. The fiber optic transceivers include a fiber optic transceiver 41 at the equipment room end and a fiber optic transceiver 42 at a non-equipment room end. The fiber optic transceiver 42 at the non-equipment room end is connected to the fiber optic transceiver 41 at the equipment room end through the signal transfer nodes of the tower optical distribution box 50 and the equipment room optical distribution box 60. The fiber optic transceiver 41 at the equipment room end is connected to the control computer 30. This system directly detects the louver opening using angle sensors 10, and further determines the optimal louver opening based on data affecting heat dissipation. This achieves precise louver control, ensuring the louver opening is consistently optimal. This effectively avoids the safety risks of localized low temperatures in the cooling triangle and tube bundle freezing and cracking caused by inconsistent louver openings in winter, thus improving the anti-freezing capability of the indirect cooling tower and the safety and economy of the generator set. Furthermore, installing an angle sensor 10 every predetermined number of louvers and connecting them daisy-chain improves detection accuracy and ensures consistent louver opening. The 485 fiber optic transceiver offers strong anti-interference capabilities and long transmission distances. The angle sensors are installed in slots in the middle of the louver louvers for precise measurement of louver opening. Finally, the opening status of each louver can be remotely viewed using a workstation computer.

[0125] The storage medium provided in the embodiments of the present invention will be described below. The storage medium described below can be referred to in correspondence with the louver opening control method of the indirect cooling tower described above.

[0126] The present invention also provides a storage medium storing a computer program, which, when executed by a processor, implements the steps of the above-described method for controlling the opening degree of the louvers in an intercooling tower.

[0127] The storage medium can include various media that can store program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0128] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0129] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0130] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0131] The foregoing has provided a detailed description of the method, apparatus, system, and storage medium for controlling the opening degree of louvers in an indirect cooling tower. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for controlling the opening degree of louvers in an indirect cooling tower, characterized in that, include: Acquire data on the actual opening degree of the louvers detected by the current angle sensor, the target opening degree of the louvers in the previous cycle, and factors affecting heat dissipation. Based on the actual opening, the target opening of the louvers in the previous cycle, and the data on factors affecting heat dissipation, the target opening of the louvers in the next cycle is calculated. The opening of the blinds is adjusted to the target opening of the blinds in the next cycle, and the angle sensor is used to detect whether the current opening of the blinds is within the preset range. The preset interval is set according to the target opening degree and allowable error of the louvers in the next cycle; If the value is within the preset range, then the adjustment is stopped; If the opening is not within the preset range, continue adjusting until the current venetian blind opening is within the preset range; The step of calculating the target opening of the louvers for the next cycle based on the actual opening, the target opening of the louvers in the previous cycle, and the data on factors affecting heat dissipation includes: The cooling coefficient temperature difference change rate is calculated based on the inlet water temperature, outlet water temperature, ambient temperature, and outlet water temperature setpoint. The average opening of the sector louvers is calculated based on the actual opening. The louver opening correction coefficient is calculated based on the target opening degree of the louver in the previous cycle and the actual opening degree. The load correction factor is set according to the rate of change in power generation; The correction factor for the change in circulating water volume is calculated based on the number of operational sectors, the total number of sectors, and the initial circulating water volume change correction factor. The target opening of the louvers for the next cycle is calculated based on the cooling coefficient temperature difference change rate, the average opening of the sector louvers, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient.

2. The method for controlling the opening degree of louvers in an indirect cooling tower according to claim 1, characterized in that, The step of calculating the target opening of the louvers for the next cycle based on the cooling coefficient temperature difference change rate, the average opening of the sector louvers, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient includes: ； in, This indicates the average opening degree of the louvers in the sector. This represents the rate of change of temperature difference in the cooling coefficient. This represents the correction factor for changes in circulating water volume. This represents the load correction factor. This represents the correction factor for venetian blind opening detection. This indicates the target opening degree of the blinds for the next cycle.

3. A device for controlling the opening degree of louvers in an indirect cooling tower, characterized in that, include: The acquisition module is used to acquire the actual opening degree of the louvers detected by the current angle sensor, the target opening degree of the louvers in the previous cycle, and data on factors affecting heat dissipation. The target opening calculation module is used to calculate the target opening of the louvers in the next cycle based on the actual opening, the target opening of the louvers in the previous cycle, and the data on the factors affecting heat dissipation. The opening adjustment module is used to adjust the opening of the venetian blinds to the target opening of the venetian blinds in the next cycle, and to use the angle sensor to detect whether the current opening of the venetian blinds is within the preset range. The preset interval is set according to the target opening degree and allowable error of the louvers in the next cycle; The first result module is used to stop the adjustment if the result is within the preset range; The second result module is used to continue adjusting if the current venetian blind opening is not within the preset range, until the current venetian blind opening is within the preset range. The target opening calculation module includes: The cooling coefficient temperature difference change rate calculation unit is used to calculate the cooling coefficient temperature difference change rate based on the inlet water temperature, outlet water temperature, ambient temperature and outlet water temperature setpoints. The average opening degree calculation unit for sector louvers is used to calculate the average opening degree of sector louvers based on the actual opening degree. The louver opening detection correction coefficient calculation unit is used to calculate the louver opening detection correction coefficient based on the target opening of the louver in the previous cycle and the actual opening. The load correction factor setting unit is used to set the load correction factor according to the rate of change of power generation; The circulating water volume change correction coefficient calculation unit is used to calculate the circulating water volume change correction coefficient based on the number of operational sectors, the total number of sectors, and the initial circulating water volume change correction coefficient. The target opening calculation unit for the next cycle of louvers is used to calculate the target opening of the louvers for the next cycle based on the cooling coefficient temperature difference change rate, the average opening of the sector louvers, the load correction coefficient, the louver opening detection correction coefficient, and the circulating water volume change correction coefficient.

4. A louver opening control system for an indirect cooling tower, characterized in that, include: Multiple angle sensors installed on the louver blades are used to detect the opening degree of the louvers; A switching power supply is used to power the angle sensor; A control computer is used to perform the steps of the method for controlling the opening degree of the louvers of an indirect cooling tower as described in any one of claims 1 to 2; Fiber optic transceivers are used to receive and transmit signals from the control computer. The fiber optic transceivers include fiber optic transceivers at the equipment room end and fiber optic transceivers at the non-equipment room end. The fiber optic transceivers at the non-equipment room end are connected to the fiber optic transceivers at the equipment room end through signal switching nodes in the tower optical distribution box and the equipment room optical distribution box. The fiber optic transceivers at the equipment room end are connected to the control computer.

5. The louver opening control system for an indirect cooling tower according to claim 4, characterized in that, The multiple angle sensors installed on the louver blades include: An angle sensor is installed on the louvers at predetermined intervals of a number of slats, and the angle sensors are connected in a chain.

6. The louver opening control system for an indirect cooling tower according to claim 5, characterized in that, The angle sensor is installed in a groove in the middle of the louver blade.

7. The louver opening control system for an indirect cooling tower according to claim 4, characterized in that, The fiber optic transceiver is a 485 fiber optic transceiver, used to convert RS-485 signals into optical signals for transmission.

8. The louver opening control system for an indirect cooling tower according to claim 4, characterized in that, Also includes: The workstation computer is used to remotely monitor the opening status of each louver via a local area network.

9. A storage medium, characterized in that, The storage medium stores computer-executable instructions, which, when loaded and executed by a processor, implement the steps of the indirect cooling tower louver opening control method as described in any one of claims 1 to 2.

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