阅读说明：本技术 冷却塔的冷却性能监测方法、装置、设备和存储介质 (Cooling performance monitoring method, device, equipment and storage medium of cooling tower ) 是由 谭明 熊双成 曾海涛 石健 廖毅 熊杭 周春阳 王田 普新林 廖川 于 2021-08-19 设计创作，主要内容包括：本申请涉及一种冷却塔的冷却性能监测方法、装置、设备和存储介质。所述方法包括：获取换流阀冷却系统中各个冷却塔的包括冷却塔风机的电流值和/或冷却塔集水盘的温度值的冷却性能参数,根据各冷却塔的冷却性能参数,确定各冷却塔的冷却性能的监测结果,在监测结果表示冷却塔的冷却性能异常时,发送冷却性能报警信息。采用本方法能够实时检测冷却塔的风机是否异常以及冷却塔的集水盘温度是否异常,进而直接反映冷却塔的冷却性能异常,相较于现有技术在进水管处采集温度信息,能够及时、快速、直接地反映冷却塔的冷却性能,使工作人员能够更及时的接收到报警信息,进行检修,避免重大损失。(The application relates to a cooling performance monitoring method, a cooling performance monitoring device, cooling performance monitoring equipment and a storage medium of a cooling tower. The method comprises the following steps: the method comprises the steps of obtaining cooling performance parameters including a current value of a fan of the cooling tower and/or a temperature value of a water collecting tray of the cooling tower of each cooling tower in a converter valve cooling system, determining a monitoring result of the cooling performance of each cooling tower according to the cooling performance parameters of each cooling tower, and sending cooling performance alarm information when the monitoring result shows that the cooling performance of the cooling tower is abnormal. By adopting the method, whether the fan of the cooling tower is abnormal or not and whether the temperature of the water collecting tray of the cooling tower is abnormal or not can be detected in real time, so that the cooling performance of the cooling tower is directly reflected to be abnormal.)

1. A method of monitoring cooling performance of a cooling tower, the method comprising:

obtaining cooling performance parameters of each cooling tower in a converter valve cooling system; the cooling performance parameters comprise the current value of a fan of the cooling tower and/or the temperature value of a water collecting tray of the cooling tower;

determining a monitoring result of the cooling performance of each cooling tower according to the cooling performance parameters of each cooling tower;

and if the monitoring result shows that the cooling performance of the cooling tower is abnormal, sending cooling performance alarm information.

2. The method of claim 1, wherein determining the monitoring of the cooling performance of each cooling tower based on the cooling performance parameter of each cooling tower comprises:

judging whether the cooling performance parameters of the cooling towers exceed a preset parameter threshold range or not;

and if the cooling performance parameters of the cooling towers do not exceed the preset parameter threshold range, executing the step of determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameters of each cooling tower.

3. The method of claim 2, further comprising:

if the cooling performance parameter of the cooling tower exceeds the preset parameter threshold range, determining the cooling performance parameter of the cooling tower as invalid data, and sending an early warning signal; the early warning signal is used for indicating that the cooling performance parameter is invalid data.

4. The method of claim 2, wherein the cooling performance parameter comprises a current value of a fan of the cooling tower, and wherein determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower comprises:

sorting the current values of the fans of the cooling tower from large to small, and subtracting the maximum current value from the first current value to obtain a first difference value; the first current value is smaller than the maximum current value and larger than other current values in the current values of the cooling tower fan;

and if the first difference is larger than a preset first difference threshold value, determining that the monitoring result represents that the cooling performance of the cooling tower is abnormal.

5. The method of claim 2, wherein the cooling performance parameter comprises a temperature value of a cold zone tower water collection tray, and wherein determining the monitoring of the cooling performance of each of the cooling towers based on the cooling performance parameter of each of the cooling towers comprises:

sorting the temperature values of the water collecting trays of the cooling towers from large to small, and subtracting a second temperature value from a maximum temperature value in the temperature values of the water collecting trays of the cooling towers to obtain a second difference value; the second temperature value is smaller than the maximum temperature value and is larger than other temperature values in the temperature of the cooling tower fan;

and if the second difference is larger than a preset second difference threshold value, determining that the monitoring result shows that the cooling performance of the cooling tower is abnormal.

6. A cooling performance monitoring system for a cooling tower, the system comprising: a data acquisition device and a terminal;

the data acquisition device is used for acquiring current values of cooling tower fans and temperature values of cooling tower water collecting trays in the converter valve cooling system and sending the current values and the temperature values to the terminal;

the terminal for implementing the steps of the method of any one of claims 1 to 5.

7. The system of claim 6, wherein the data acquisition device comprises: the device comprises a temperature sensor, a current meter, a communication module and an antenna;

the temperature sensor is used for acquiring the temperature value of each cooling tower water collecting tray and transmitting the temperature value to the communication module;

the current meter is used for collecting the current value of each cooling tower fan and transmitting the current value to the communication module;

and the communication module is used for sending the temperature value of the cooling tower water collecting tray and/or the current value of the cooling tower fan to the terminal through the antenna.

8. A cooling performance monitoring device for a cooling tower, the device comprising:

the acquisition module is used for acquiring the cooling performance parameters of each cooling tower in the converter valve cooling system; the cooling performance parameters comprise the current value of a fan of the cooling tower and/or the temperature value of a water collecting tray of the cooling tower;

the determining module is used for determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower;

and the sending module is used for sending cooling performance alarm information if the monitoring result shows that the cooling performance of the cooling tower is abnormal.

9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 5.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.

Technical Field

The present disclosure relates to the field of power systems, and in particular, to a method, an apparatus, a device, and a storage medium for monitoring cooling performance of a cooling tower.

Background

The converter valve is used as an important device of a high-voltage direct-current transmission system, a large amount of heat can be generated in the operation process, and in order to guarantee the normal operation of the converter valve, the extra-high voltage converter station is provided with a converter valve cooling system for cooling the converter valve. When the converter valve is cooled, whether the cooling performance of the converter valve cooling system is abnormal needs to be monitored.

In the prior art, when the cooling performance is monitored, the temperature of the water inlet of an inner cooling water pipe of an inner cooling water system in a converter valve cooling system is monitored to reflect the cooling performance of a cooling tower. However, the cooling performance of the cooling tower in the converter valve cooling system cannot be directly monitored in the prior art.

Disclosure of Invention

In view of the above, it is necessary to provide a cooling performance monitoring method, device, equipment and storage medium for a cooling tower, which can directly monitor the cooling performance of the cooling tower in a converter valve cooling system.

In a first aspect, the present application provides a method for monitoring cooling performance of a cooling tower, the method comprising:

obtaining cooling performance parameters of each cooling tower in a converter valve cooling system; the cooling performance parameters comprise the current value of a fan of the cooling tower and/or the temperature value of a water collecting tray of the cooling tower;

determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameters of each cooling tower;

and if the monitoring result shows that the cooling performance of the cooling tower is abnormal, sending cooling performance alarm information.

In one embodiment, determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower comprises:

judging whether the cooling performance parameters of the cooling towers exceed a preset parameter threshold range or not;

and if the cooling performance parameters of the cooling towers do not exceed the preset parameter threshold range, determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameters of each cooling tower.

In one embodiment, the method for monitoring cooling performance of a cooling tower further comprises:

if the cooling performance parameter of the cooling tower exceeds the preset parameter threshold range, determining the cooling performance parameter of the cooling tower as invalid data, and sending an early warning signal; the early warning signal is used to indicate that the cooling performance parameter is invalid data.

In one embodiment, the determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower includes:

sorting the current values of the fans of the cooling tower from large to small, and subtracting the maximum current value from the first current value to obtain a first difference value; the first current value is smaller than the maximum current value and is larger than other current values in the current values of the cooling tower fan;

and if the first difference is larger than a preset first difference threshold value, determining that the monitoring result indicates that the cooling performance of the cooling tower is abnormal.

In one embodiment, the cooling performance parameter includes a temperature value of a water collection tray of the cold area tower, and the determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower includes:

sorting the temperature values of the water collecting trays of the cooling towers from large to small, and subtracting the maximum temperature value and the second temperature value in the temperature values of the water collecting trays of the cooling towers to obtain a second difference value; the second temperature value is smaller than the maximum temperature value and is larger than other temperature values in the temperature of the cooling tower fan;

and if the second difference is larger than a preset second difference threshold value, determining that the monitoring result indicates that the cooling performance of the cooling tower is abnormal.

In a second aspect, the present application provides a cooling performance monitoring system for a cooling tower, the system comprising: a data acquisition device and a terminal;

the data acquisition device is used for acquiring current values of cooling tower fans and temperature values of cooling tower water collecting trays in the converter valve cooling system and sending the current values and the temperature values to the terminal;

a terminal for implementing the steps of the method in any of the above embodiments.

In one embodiment, the data acquisition device comprises: the device comprises a temperature sensor, a current meter, a communication module and an antenna;

the temperature sensor is used for acquiring the temperature value of each cooling tower water collecting tray and transmitting the temperature value to the communication module;

the current meter is used for acquiring the current value of each cooling tower fan and transmitting the current value to the communication module;

and the communication module is used for transmitting the temperature value of the cooling tower water collecting tray and/or the current value of the cooling tower fan to the terminal through the antenna.

In a third aspect, the present application provides a cooling performance monitoring device for a cooling tower, the device comprising:

the acquisition module is used for acquiring the cooling performance parameters of each cooling tower in the converter valve cooling system; the cooling performance parameters comprise the current value of a fan of the cooling tower and/or the temperature value of a water collecting tray of the cooling tower;

the determining module is used for determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameters of each cooling tower;

and the sending module is used for sending cooling performance alarm information if the monitoring result shows that the cooling performance of the cooling tower is abnormal.

In a fourth aspect, the present application provides a computer device, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the method in any one of the above first aspect when executing the computer program.

In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any of the above-mentioned embodiments of the first aspect.

According to the method, the device, the equipment and the storage medium for monitoring the cooling performance of the cooling tower, the cooling performance parameters including the current value of a fan of the cooling tower and/or the temperature value of a water collecting disc of the cooling tower of each cooling tower in the converter valve cooling system are obtained, the monitoring result of the cooling performance of each cooling tower is determined according to the cooling performance parameters of each cooling tower, and when the monitoring result shows that the cooling performance of the cooling tower is abnormal, cooling performance alarm information is sent. Whether fan that can real-time detection cooling tower is unusual and the water-collecting tray temperature of cooling tower is unusual, and then the cooling performance of direct reflection cooling tower is unusual, compares in prior art and locates to gather temperature information in inlet tube, can in time, fast, directly reflect the cooling performance of cooling tower, makes the staff can be more timely receive alarm information, overhauls, avoids great loss.

Drawings

FIG. 1 is a block diagram of a cooling tower in a converter valve cooling system in one embodiment;

FIG. 2 is a diagram of an exemplary embodiment of a cooling tower cooling performance monitoring method;

FIG. 3 is a schematic flow diagram of a method for monitoring cooling performance of a cooling tower according to one embodiment;

FIG. 4 is a schematic flow chart of a cooling performance monitoring method of a cooling tower according to another embodiment;

FIG. 5 is a schematic flow chart of a cooling performance monitoring method of a cooling tower according to another embodiment;

FIG. 6 is a schematic flow chart of a cooling performance monitoring method of a cooling tower according to another embodiment;

FIG. 7 is a schematic flow chart of a cooling performance monitoring method of a cooling tower according to another embodiment;

FIG. 8 is a logic diagram of a cooling performance monitoring method of a cooling tower according to one embodiment;

FIG. 9 is a block diagram of a cooling performance monitoring system of a cooling tower according to an embodiment;

FIG. 10 is a block diagram of a cooling performance monitoring system of a cooling tower according to an embodiment;

FIG. 11 is a block diagram showing a cooling performance monitoring apparatus of a cooling tower according to an embodiment;

FIG. 12 is a block diagram showing a cooling performance monitoring apparatus of a cooling tower according to another embodiment;

FIG. 13 is a diagram illustrating an internal structure of a computer device according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The converter valve is used as an important device of a high-voltage direct-current transmission system, a large amount of heat can be generated in the operation process, and in order to guarantee the normal operation of the converter valve, the extra-high voltage converter station is provided with a converter valve cooling system for cooling the converter valve. The cooling tower is a comprehensive product integrating multiple disciplines such as aerodynamics, thermodynamics, fluidics, chemistry, materials science, static, dynamic structure mechanics, processing technology and the like, and the heat dissipation of the cooling tower mainly depends on two types of conduction heat dissipation and volatilization heat dissipation, wherein the conduction heat dissipation is to transfer heat into spray water, and the temperature difference between a coil pipe and the spray water determines how much heat can be absorbed and contained by the spray water; the heat of the spray water is discharged to the outside air by a fan for volatilization and heat dissipation, as shown in fig. 1.

According to the design specification of the direct-current power transmission system, when the temperature of the internal cooling water is increased due to the failure of good cooling, the heat dissipation of the valve plate is affected, and the safe and stable operation of the direct-current power transmission system is endangered. When the temperature of the inner cooling water rises to 47 ℃, the valve cooling system sends out warning information of high temperature of the inner cooling water, and when the temperature rises to 50 ℃, the direct current transmission system directly trips and stops running. Obviously, the cooling capacity of the cooling tower will directly affect the stable operation of the dc transmission system. At present, the cooling capacity of a converter valve cooling tower of a direct current transmission system cannot be monitored in real time, when sub-equipment inside the cooling tower breaks down, operators on duty cannot find the condition of cooling capacity reduction of the cooling tower in time, signals can be sent up until the temperature of internal cooling water reaches an alarm value of 47 ℃, the time for carrying out cooling emergency treatment by the operators is very urgent, and the operators generally apply to reduce transmission power or forcibly stop operation to relieve the transmission power, so that unnecessary economic loss is caused.

Based on this, the cooling performance monitoring method of the cooling tower provided by the present application can be applied to the application environment as shown in fig. 2. The application environment comprises a data acquisition device and a terminal. The terminal 21 and the data acquisition device 22 communicate with each other through a network. The data acquisition device acquires the fan current value of the cooling tower and the temperature value of the water collecting tray in real time to obtain cooling performance parameters and sends the cooling performance parameters to the terminal, and the terminal monitors the cooling performance parameters to determine whether the cooling performance of the cooling tower is abnormal or not. The terminal 21 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers and portable wearable devices, and the data collection device 22 may include a current meter or a sensor.

In one embodiment, as shown in fig. 3, a method for monitoring cooling performance of a cooling tower is provided, which is illustrated by taking the method as an example applied to the terminal in fig. 2, and comprises the following steps:

s302, obtaining cooling performance parameters of each cooling tower in a converter valve cooling system; the cooling performance parameters comprise the current value of a fan of the cooling tower and/or the temperature value of a water collecting tray of the cooling tower.

Specifically, the current value of a fan of the cooling tower in the converter valve cooling system and the temperature value of a water collecting tray of the cooling tower can be collected in real time through the data collecting device, and the collected cooling performance parameters are sent to the terminal, namely the terminal obtains the cooling performance parameters of each cooling tower in the converter valve cooling system. Wherein, data acquisition device can include the ammeter meter, the current value of real-time measurement fan, and temperature sensor gathers the temperature value of cooling tower water-collecting tray in real time.

According to the design principle of the converter valve cooling tower, generally, each valve group can be provided with three cooling towers to cool the inner cooling water coil at the same time, but the valve group is not limited to three cooling towers. Because the produced heat of valve block is taken away to the interior cold water of valve cold system after hugging closely the valve block and flowing, its temperature can rise, and the temperature rise is:

in the formula: delta theta is the temperature rise of the internal cooling water; p_lossThe heat brought by the internal cooling water in unit time is kW; q is the flow of the inner cold water main pipeline, L/min; k is a radical of_wThe specific heat capacity of the inner cooling water is Ws/(kg DEG C); k is a radical of_TThe constant value 60 indicates that 1min, i.e., 60s, generates heat in the entire valve, and in addition to the heat generated by the thyristor element, the heat is also carried out by the damping resistor, the valve reactor, and the like, and this heat is also carried out by the internal cooling water.

In actual steady state operation of the valve cooling system, Δ θ is only related to the thermal performance of the converter valve, the dc power, the flow rate of the internal cooling water and the ambient temperature of the valve hall. In normal operation, the direct current power is not frequently adjusted, and the ambient temperature of the valve hall is controlled within a certain range by the air conditioner of the valve hall, so that the delta theta can be regarded as a constant value. The cooling efficiency of a cooling tower can be expressed as:

wherein delta theta is the temperature difference between the inlet water and the outlet water of the cooling water in the cooling tower and is regarded as a constant value; t is_piIs the temperature of the spray water before spraying, T_poAbsorbing the temperature of the heat of the coil pipe falling into the water collecting tray after the heat of the spray water is radiated by the fan and the filler, wherein the temperature is T under the normal condition_po>T_pi. When the spraying equipment in the cooling tower fails (such as damaged filler and reduced spraying water quantity), the cooling tower is scatteredThe heat energy is reduced, and the water temperature of the water collecting tray is obviously increased.

Meanwhile, the temperature T when the heat of the spray water absorption coil pipe falls into the water collecting tray after being radiated by the fan and the filler_poAssociated with the fan operating conditions of the cooling tower, as shown in equation (3),

in formula (3):k is the coefficient value, L is the DC operating power, L_maxFor maximum operating power, T_cIs the current ambient temperature, T_hIs the maximum ambient temperature, u₁,...u_nRepresenting the running state of n fans, taking a number between 0 and 1, P_e1,...P_enIndicating the nth rated power of the fan, P_eIs the sum of all rated power of the fans, P₁,...P_nThe running power of the n fans is represented, and when the running power is 0, the fans are not in operation. Wherein the content of the first and second substances,

in the formula, P_nPower (kW), Q is the air volume (m3/h), p is the air pressure (Pa), eta is₁To the fan efficiency, η₂The mechanical transmission efficiency is improved. According to Pn ═ U × I, the air volume Q of the fan can be expressed by formula (4):

by the formula (5), when the current value I of a certain fan is monitored to be low, the rotating speed of the fan is reduced, the air inlet quantity Q is reduced, the heat dissipation capacity is reduced, and the cooling capacity of the cooling tower can be judged to be reduced.

Considering the dc transmission system at a fixed load (i.e. Δ θ is cooling)The difference in temperature of cold water business turn over water in the tower, regards as unchangeable numerical value), the fixed value is got to ambient temperature, and the fixed value is got to the spray water volume, can know by above data model analysis: (1) when the current of a fan of the cooling tower is abnormally low, the reduction of the cooling capacity can be reflected; (2) water temperature T in the water collection tray of a cooling tower_poAn abnormally high level may also reflect a decrease in the cooling capacity.

S304, determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameters of each cooling tower.

Specifically, when the terminal obtains the cooling performance parameters of the cooling tower, according to the design principle of the converter valve cooling tower, generally, each valve bank can be provided with three cooling towers to cool down the internal cooling water coil at the same time, but the terminal is not limited to being provided with three cooling towers. Taking the cooling system comprising three cooling towers as an example, the coils in the three cooling towers are connected in parallel structure to bear equal heat, and the fans in the cooling towers are configured in the same way, namely P_nEqual, ambient temperature T_cEqual, equal spray water flow, theoretically equal cooling capacity exerted by the three cooling towers, so the output condition (current value I of the fan) of each fan of the cooling tower and the temperature T when the cooled fan falls into the water collecting tray_poShould also be equal. Therefore, in the actual operation process of the direct-current transmission system, the direct-current transmission power can change at any time, the current I of the fans of the three cooling towers in variable-frequency operation is also fluctuated after the fans are calculated according to the system, and meanwhile, the environmental temperature can also change to cause the water temperature T of the water collecting tray_poAlso can be changed by simply setting the current value I of the fan and the temperature value T of the water collecting tray_poThe cooling capacity of the cooling tower is directly judged according to the threshold value, if the threshold value is exceeded, the cooling performance of the cooling tower is judged to be abnormal, namely the monitoring result is abnormal; the current values of the fans of the three cooling towers can be compared with each other, the temperature values of the water collecting trays of the three cooling towers can be compared with each other, and if one of the values is obviously larger than the other two values, the cooling performance of the cooling tower is proved to be abnormal, namely the monitoring result is abnormal.

S306, if the monitoring result shows that the cooling performance of the cooling tower is abnormal, sending cooling performance alarm information.

Specifically, when the terminal determines that the monitoring result shows that the cooling performance of the cooling tower is abnormal, cooling alarm information is sent to prompt that the cooling performance of the cooling tower is abnormal.

In this embodiment, a cooling performance parameter including a current value of a fan of a cooling tower and/or a temperature value of a water collection tray of the cooling tower of each cooling tower in the converter valve cooling system is obtained, a monitoring result of the cooling performance of each cooling tower is determined according to the cooling performance parameter of each cooling tower, and when the monitoring result indicates that the cooling performance of the cooling tower is abnormal, cooling performance alarm information is sent. Whether fan that can real-time detection cooling tower is unusual and the water-collecting tray temperature of cooling tower is unusual, and then the cooling performance of direct reflection cooling tower is unusual, compares in prior art and locates to gather temperature information in inlet tube, can in time, fast, directly reflect the cooling performance of cooling tower, makes the staff can be more timely receive alarm information, overhauls, avoids great loss.

The above embodiment describes the cooling performance monitoring of the cooling tower, and in the cooling performance monitoring, how to mainly determine whether the cooling performance is abnormal or not is described first with an embodiment, where in an embodiment, as shown in fig. 4, the determining method for determining the abnormal cooling performance according to the cooling performance parameter of each cooling tower determines the monitoring result of the cooling performance of each cooling tower, and includes:

s402, judging whether the cooling performance parameters of the cooling towers exceed the preset parameter threshold range.

Specifically, firstly, judging whether the cooling performance parameters of each cooling tower exceed a preset parameter threshold range; the preset parameter threshold range is as follows: the maximum range of the current value of the fan of the cooling tower which can fluctuate and the maximum fluctuation range of the temperature value of the water collecting tray of the cooling tower in the cooling performance parameters are usually set by empirical values.

S404, if the cooling performance parameters of the cooling towers do not exceed the preset parameter threshold range, determining the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameters of each cooling tower.

Specifically, if the cooling performance parameter of the cooling tower does not exceed the preset parameter threshold range, the cooling performance parameter of the cooling tower is considered to be valid data, and the next operation of determining whether the cooling performance parameter is abnormal is performed.

Optionally, if the cooling performance parameter of the cooling tower exceeds the preset parameter threshold range, determining the cooling performance parameter of the cooling tower as invalid data, and sending an early warning signal; the early warning signal is used to indicate that the cooling performance parameter is invalid data.

In this embodiment, by determining whether the cooling performance parameter of each cooling tower exceeds a preset parameter threshold range, if the cooling performance parameter of each cooling tower does not exceed the preset parameter threshold range, a step of determining a monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower is performed, and if the cooling performance parameter of each cooling tower exceeds the preset parameter threshold range, the cooling performance parameter of each cooling tower is determined to be invalid data, and an early warning signal is sent. The method can be used for pre-judging the obtained cooling performance parameters of the cooling tower, and only when the cooling performance parameters of the cooling tower are effective data, the next judgment is carried out. The influence of invalid data when the measurement error is large on a final monitoring result is avoided, meanwhile, early warning can be further carried out when the invalid data exist, and workers can conveniently conduct troubleshooting.

In the foregoing embodiment, it is described how to determine whether the cooling performance is abnormal, and when monitoring the cooling tower in real time, it may be collected whether the current value of the fan in the cooling tower is abnormal to show whether the cooling performance of the cooling tower is abnormal, and now, an embodiment describes how to determine the monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower, in an embodiment, as shown in fig. 5, the cooling performance parameter includes the current value of the fan of the cooling tower, and the monitoring result of the cooling performance of each cooling tower is determined according to the cooling performance parameter of each cooling tower, including:

s502, sorting the current values of the fans of the cooling tower from large to small, and subtracting the maximum current value from the first current value to obtain a first difference value; the first current value is less than the maximum current value and greater than other ones of the current values of the cooling tower fan.

Specifically, for the cooling performance parameter of the cooling tower being the current value of the cooling tower fan, the current values of the cooling tower fans may be sorted from large to small, and according to the sorting result, the maximum current value and the second largest current value, that is, the first current value, of the current values of the cooling tower fans may be obtained. For example, the current value of the first cooling tower is 1A, the current value of the second cooling tower is 2A, and the current value of the third cooling tower is 3A, and after sorting, the maximum current value is the current value of the third cooling tower, and the first current value is the current value of the second cooling tower. And after determining the maximum current value and the second large current value in the current values of the cooling tower fan, subtracting the two data to obtain a first difference value.

S504, if the first difference value is larger than a preset first difference value threshold value, it is determined that the monitoring result shows that the cooling performance of the cooling tower is abnormal.

Specifically, when the first difference is larger than a preset first difference threshold value, the monitoring result is determined to indicate that the cooling performance of the cooling tower is abnormal.

In the embodiment, the current values of the fans of the cooling tower are sorted from large to small, and the maximum current value in the current values of the fans of the cooling tower is different from a first current value to obtain a first difference value; and if the first difference value is greater than a preset first difference value threshold value, determining that the monitoring result indicates that the cooling performance of the cooling tower is abnormal. The cooling tower with the larger current value error of the fan can be determined based on the fact that the cooling capacity of each cooling tower is basically consistent, the cooling tower with the larger current value error of the fan is determined to be abnormal in cooling performance, and the method is simple and effective.

The foregoing embodiment describes whether the cooling performance of the cooling tower is abnormal by determining whether the current value of the fan in the cooling tower is abnormal, and when the cooling performance of the actual cooling tower is monitored, whether the cooling performance is abnormal can be also reflected by collecting the temperature of the water collecting tray of the cooling tower, and now an embodiment describes how to determine the monitoring result of the cooling performance of each cooling tower according to the temperature of the water collecting tray of each cooling tower, in an embodiment, as shown in fig. 6, the cooling performance parameter includes the temperature value of the water collecting tray of the cooling tower, and the monitoring result of the cooling performance of each cooling tower is determined according to the cooling performance parameter of each cooling tower, including:

s602, sorting the temperature values of the water collecting trays of the cooling towers from large to small, and subtracting the second temperature value from the maximum temperature value in the temperature values of the water collecting trays of the cooling towers to obtain a second difference value; the second temperature value is less than the maximum temperature value and greater than other temperature values in the temperature of the cooling tower fan.

Specifically, for the cooling performance parameter of the cooling tower being the temperature value of the water collection tray of the cooling tower, the temperature values of the water collection trays of the cooling tower may be sorted from large to small, and according to the sorting result, the maximum temperature value and the second large temperature value, that is, the second temperature value, of the temperature values of the water collection tray of the cooling tower may be obtained. For example, the temperature value of the first cooling tower is 45A, the current value of the second cooling tower is 42A, and the current value of the third cooling tower is 43A, and after the sorting, the maximum current value is the temperature value of the first cooling tower, and the second temperature value is the temperature value of the third cooling tower. And after determining the maximum temperature value and the second maximum temperature value in the temperature values of the water collecting tray of the cooling tower, subtracting the two data to obtain a second difference value.

S604, if the second difference is larger than a preset second difference threshold, determining that the monitoring result indicates that the cooling performance of the cooling tower is abnormal.

Specifically, when the second difference is larger than a preset second difference threshold, the monitoring result is determined to indicate that the cooling performance of the cooling tower is abnormal.

In this embodiment, the temperature values of the water collection trays of the cooling towers are sorted from large to small, and the maximum temperature value and the second temperature value in the temperature values of the water collection trays of the cooling towers are differentiated to obtain a second difference value; and if the second difference value is greater than a preset second difference value threshold value, determining that the monitoring result indicates that the cooling performance of the cooling tower is abnormal. The cooling tower with larger error of the temperature of the water collecting tray can be determined based on the basis that the cooling capacity of each cooling tower is basically consistent, and the cooling tower with larger error of the temperature of the water collecting tray is determined to be abnormal in cooling performance, and the method is simple and effective.

To facilitate understanding of those skilled in the art, the cooling performance monitoring method of the cooling tower will be further described with an embodiment, in which as shown in fig. 7, the cooling performance monitoring method of the cooling tower comprises:

s702, obtaining cooling performance parameters of each cooling tower in the converter valve cooling system; the cooling performance parameters comprise the current value of a fan of the cooling tower and/or the temperature value of a water collecting tray of the cooling tower.

S704, judging whether the cooling performance parameters of the cooling towers exceed the preset parameter threshold range.

S706, if the cooling performance parameter of the cooling tower exceeds the preset parameter threshold range, determining the cooling performance parameter of the cooling tower as invalid data, and sending an early warning signal; the early warning signal is used to indicate that the cooling performance parameter is invalid data.

And S708, if the cooling performance parameter of the cooling tower does not exceed the preset parameter threshold range, executing a step of determining a monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower.

S710, sorting the current values of the fans of the cooling tower from large to small, and subtracting the maximum current value from the first current value to obtain a first difference value; the first current value is less than the maximum current value and greater than other ones of the current values of the cooling tower fan.

And S712, if the first difference value is larger than a preset first difference value threshold, determining that the monitoring result indicates that the cooling performance of the cooling tower is abnormal.

S714, the temperature values of the water collecting trays of the cooling towers are sorted from large to small, and the maximum temperature value and the second temperature value in the temperature values of the water collecting trays of the cooling towers are differed to obtain a second difference value; the second temperature value is less than the maximum temperature value and greater than other temperature values in the temperature of the cooling tower fan.

And S716, if the second difference value is larger than a preset second difference value threshold value, determining that the monitoring result shows that the cooling performance of the cooling tower is abnormal.

S718, if the monitoring result shows that the cooling performance of the cooling tower is abnormal, sending cooling performance alarm information.

Specifically, the specific definition of the cooling performance monitoring method of the cooling tower can be referred to the definition of the cooling performance monitoring method of the cooling tower in the above, and the detailed description is omitted here. Wherein, the logic diagram of the design can refer to FIG. 8, wherein I_e1，I_e2For a preset current value parameter threshold range, T_e1，T_e2For a preset temperature value parameter threshold range, T_po-1～T_po-3Is the temperature value and I of the water collecting tray of three cooling towers₁～I₃The fan current values for the three cooling towers are shown.

It should be understood that although the various steps in the flow charts of fig. 3-8 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 3-8 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.

The above-mentioned embodiment describes a cooling performance monitoring method of a cooling tower, and a cooling performance monitoring system of a cooling tower is described with an embodiment, and in an embodiment, as shown in fig. 9, the system includes: a data acquisition device 902 and a terminal 904;

the data acquisition device 902 is used for acquiring current values of cooling tower fans and temperature values of cooling tower water collecting trays in the converter valve cooling system and sending the current values and the temperature values to the terminal;

a terminal 904 for implementing the steps of the method in any of the above embodiments.

Specifically, the data acquisition device is arranged in each cooling tower in the converter valve cooling system to acquire the current value of each cooling tower fan and the temperature value of each cooling tower water collecting tray in real time and send the current values and the temperature values to the terminal. The data acquisition device and the terminal can perform information interaction in a wireless communication mode, and the wireless communication mode can comprise GPRS (general packet radio service), LORA (long-distance radio access network), NB-IOT (NB-internet of things) of a long-distance wireless wide area network technology, Wifi (wireless local area network) technology, Zibgee (Zibgee) technology and the like. The transmission rate, the transmission distance, the communication frequency band, the power consumption, the application environment and the like are comprehensively compared, and the data transmission is preferably performed by adopting an LoRa wireless communication mode.

The terminal can judge the operation condition of the cooling performance of the cooling tower when receiving the current value of each cooling tower fan and the temperature value of each cooling tower water collecting tray, and the method can be specifically referred to the limitation of the cooling performance monitoring method of the cooling tower, and is not repeated herein.

In the embodiment, the current value of each cooling tower fan and the temperature value of each cooling tower water collecting tray in the converter valve cooling system are collected through the data collecting device and sent to the terminal, the terminal processes the collected data to judge whether the cooling performance of the cooling tower is abnormal, and when the monitoring result shows that the cooling performance of the cooling tower is abnormal, the terminal sends cooling performance alarm information. Whether fan that can real-time detection cooling tower is unusual and the water-collecting tray temperature of cooling tower is unusual, and then the cooling performance of direct reflection cooling tower is unusual, compares in prior art and locates to gather temperature information in inlet tube, can in time, fast, directly reflect the cooling performance of cooling tower, makes the staff can be more timely receive alarm information, overhauls, avoids great loss.

The above embodiments describe a cooling performance monitoring system for a cooling tower in which a data acquisition device is required to acquire cooling performance parameters of the cooling tower, and the data acquisition device is further described with reference to an embodiment in which, as shown in fig. 10, the data acquisition device includes: a temperature sensor 101, a current meter 102, a communication module 103, and an antenna 104;

the temperature sensor 101 is used for acquiring the temperature value of each cooling tower water collecting tray and transmitting the temperature value to the communication module;

the current meter 102 is used for collecting current values of the cooling tower fans and transmitting the current values to the communication module;

and the communication module 103 is used for sending the temperature value of the cooling tower water collecting tray and/or the current value of the cooling tower fan to the terminal 904 through the antenna.

Specifically, the temperature sensors are arranged at the water collecting trays of the cooling towers, and the temperature values of the water collecting trays of the cooling towers are collected in real time and transmitted to the communication module; the current meter is connected with the fans, collects the current values of the fans of the cooling towers in real time and transmits the current values to the communication module; and the communication module sends the temperature value of the cooling tower water collecting tray and/or the current value of the cooling tower fan to the terminal through the antenna.

In this embodiment, the data acquisition apparatus includes: the device comprises a temperature sensor, a current meter, a communication module and an antenna; the temperature sensor collects the temperature value of the water collecting tray of each cooling tower and transmits the temperature value to the communication module; the current meter acquires the current value of each cooling tower fan and transmits the current value to the communication module; and the communication module sends the temperature value of the cooling tower water collecting tray and/or the current value of the cooling tower fan to the terminal through the antenna. The device cost of each module of data acquisition device is lower, can accomplish the collection of data under the low-cost circumstances to the cooling performance that reflects the cooling tower is unusual, compares in prior art and locates to gather temperature information in the inlet tube, can in time, fast, directly reflect the cooling performance of cooling tower, makes the staff can more timely receipt alarm information, overhauls, avoids great loss.

The above embodiments describe a cooling performance monitoring method and system of a cooling tower, and a cooling performance monitoring apparatus of a cooling tower is described with an embodiment, and in an embodiment, as shown in fig. 11, there is provided a cooling performance monitoring apparatus of a cooling tower, including:

the obtaining module 111 is used for obtaining cooling performance parameters of each cooling tower in the converter valve cooling system; the cooling performance parameters comprise the current value of a fan of the cooling tower and/or the temperature value of a water collecting tray of the cooling tower;

a determining module 112, configured to determine a monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower;

and the sending module 113 is configured to send cooling performance alarm information if the monitoring result indicates that the cooling performance of the cooling tower is abnormal.

In this embodiment, the obtaining module obtains cooling performance parameters of each cooling tower in the converter valve cooling system, the cooling performance parameters including a current value of a fan of the cooling tower and/or a temperature value of a water collection tray of the cooling tower, the determining module determines a monitoring result of the cooling performance of each cooling tower according to the cooling performance parameters of each cooling tower, and the sending module sends cooling performance alarm information when the monitoring result indicates that the cooling performance of the cooling tower is abnormal. Whether fan that can real-time detection cooling tower is unusual and the water-collecting tray temperature of cooling tower is unusual, and then the cooling performance of direct reflection cooling tower is unusual, compares in prior art and locates to gather temperature information in inlet tube, can in time, fast, directly reflect the cooling performance of cooling tower, makes the staff can be more timely receive alarm information, overhauls, avoids great loss.

In one embodiment, as shown in fig. 12, the determining module 113 includes:

a judging unit 1131, configured to judge whether the cooling performance parameter of each cooling tower exceeds a preset parameter threshold range;

the execution unit 1132 is configured to, if the cooling performance parameter of the cooling tower does not exceed the preset parameter threshold range, execute a step of determining a monitoring result of the cooling performance of each cooling tower according to the cooling performance parameter of each cooling tower.

In one embodiment, referring to fig. 12, the cooling performance monitoring apparatus of the cooling tower further includes:

the early warning module 114 is configured to determine that the cooling performance parameter of the cooling tower is invalid data and send an early warning signal if the cooling performance parameter of the cooling tower exceeds a preset parameter threshold range; the early warning signal is used to indicate that the cooling performance parameter is invalid data.

In one embodiment, the cooling performance parameters include current values of the cooling tower fans, and the determining module is specifically configured to sort the current values of the cooling tower fans from large to small, and obtain a first difference value by subtracting a maximum current value from a first current value among the current values of the cooling tower fans; the first current value is smaller than the maximum current value and is larger than other current values in the current values of the cooling tower fan; and if the first difference is larger than a preset first difference threshold value, determining that the monitoring result indicates that the cooling performance of the cooling tower is abnormal.

In one embodiment, the cooling performance parameters include temperature values of water collection trays of the cooling tower, and the determining module is specifically configured to sort the temperature values of the water collection trays of the cooling tower from large to small, and obtain a second difference value by subtracting a maximum temperature value and a second temperature value among the temperature values of the water collection trays of the cooling tower; the second temperature value is smaller than the maximum temperature value and is larger than other temperature values in the temperature of the cooling tower fan; and if the second difference is larger than a preset second difference threshold value, determining that the monitoring result indicates that the cooling performance of the cooling tower is abnormal.

For specific limitations of the cooling performance monitoring device of the cooling tower, reference may be made to the above limitations of the cooling performance monitoring method of the cooling tower, and details thereof are not repeated here. The modules in the cooling performance monitoring device of the cooling tower can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 13. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a cooling performance monitoring method of a cooling tower. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.

Those skilled in the art will appreciate that the architecture shown in fig. 13 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the above-described method embodiments when executing the computer program.

In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.