A device and method for measuring the uniformity of cooling tower water droplets

Abstract

This invention provides a cooling tower water drop uniformity measuring device consisting of a square mesh (1), measuring instruments (2), a power supply branch line (3), a terminal platform (4), and a power supply bus (5), used to measure the water drop uniformity above the bottom pool of a cooling tower. This invention also provides a cooling tower water drop uniformity measuring method based on the device, including steps such as tensioning and suspending the square mesh (1) above the bottom pool of the cooling tower, numbering all measuring instruments (2) from 1 to N, activating the terminal platform (4) to collect temperature change data, ending the measurement, calculating the temperature difference sequence, calculating the coefficient of variation (CV), and thereby reflecting the water drop uniformity. The cooling tower water drop uniformity measuring device of this invention has a simple structure, is easy to maintain, has low cost, good safety, and is easy to operate. The corresponding measurement method has simple logic, is stable and reliable, and is easy to program, effectively reflecting the water drop uniformity of the cooling tower to help users evaluate and modify the operation of the cooling tower.

Description

Technical Field

[0001] This invention relates to the field of cooling towers, and in particular to a device and method for measuring the uniformity of cooling tower water droplets. Background Technology

[0002] Cooling towers are widely used in industrial and civil construction to cool circulating water before delivering it to the relevant applications. The working principle of a cooling tower is as follows: High-temperature water from the main inlet pipe is divided into several streams through branch pipes and sprayed onto the packing layer via nozzles. The packing layer provides a large contact area, allowing the water flowing downwards and the air flowing upwards to fully exchange heat, thereby lowering the water temperature. The water then falls to the bottom reservoir and is delivered to the point of need. To ensure efficient and stable operation of the cooling tower, it is desirable for the water to be evenly distributed throughout the tower. However, due to improper design or operation, or equipment aging, uneven water distribution in the branch pipes, damage and blockage of nozzles, blockage of the packing layer, and short circuits caused by packing layer damage may occur. These phenomena will reduce the uniformity of water distribution within the cooling tower, decreasing its cooling capacity and efficiency, and ultimately resulting in a decrease in the uniformity of water flow above the bottom reservoir.

[0003] To ensure the efficient and stable operation of cooling towers, there has been a long-standing desire to conveniently and reliably measure the uniformity of water droplets from cooling towers without affecting their operation or disassembling them. However, current known technologies lack convenient, reliable, and quantitative measurement methods, relying primarily on manual visual observation of the water droplet area. Therefore, there is an urgent need to develop convenient and reliable quantitative measurement and evaluation techniques for the uniformity of water droplets from cooling towers. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a cooling tower water drop uniformity measurement device that is simple in structure, easy to maintain, low in cost, safe, and convenient to operate. It also provides a cooling tower water drop uniformity measurement method that is logically simple, stable, reliable, and easy to program, thereby effectively reflecting the water drop uniformity of the cooling tower to help users evaluate and modify the operation of the cooling tower.

[0005] According to one aspect of the present invention, a cooling tower water drop uniformity measuring device is provided. The technical solution is that a cooling tower water drop uniformity measuring device is arranged above the water pool at the bottom of the cooling tower to measure its water drop uniformity, and comprises a square grid, a measuring instrument, a power supply branch line, a terminal platform, and a power supply busbar, wherein:

[0006] All grids of the square mesh are square, and a measuring device is suspended on each node of the square mesh except at the edges.

[0007] The measuring device includes a suspension line and a hollow conical body connected thereto. The conical body includes a top cover, a bottom cover mechanically connected to the top cover, and a measuring block located inside the conical body.

[0008] The measuring block includes a series circuit consisting of a normally closed temperature control switch and a heat-generating resistor, as well as a temperature sensor and a signal transmitter that are electrically connected to each other.

[0009] The terminal platform includes a power supply and an information processing unit, and the power supply supplies power to all the measuring blocks through a power supply bus.

[0010] Each measuring block is connected to a power supply branch line and draws power from the power supply bus through the power supply branch line electrically connected to it, that is, each measuring block is connected in parallel to the power supply bus.

[0011] The signal transmitter in each measuring block is used to acquire the temperature value measured by the temperature sensor electrically connected to it in real time and transmit it to the information processing unit.

[0012] In the aforementioned cooling tower water drop uniformity measuring device, the measuring block inside the conical body is fixed on the inner wall surface of either the top cover or the bottom cover.

[0013] The cooling tower water drop uniformity measuring device described above, wherein the top and bottom covers of the conical body are made of any one of the following five materials: ceramic, copper, aluminum, copper alloy, and aluminum alloy.

[0014] The cooling tower water drop uniformity measuring device described above also includes a counterweight block on the bottom cover of the conical body.

[0015] In the above-mentioned cooling tower water drop uniformity measuring device, the normally closed temperature control switch has an opening temperature threshold of Tc, where Tc is between 50℃ and 70℃.

[0016] Preferably, the signal transmitter transmits temperature measurement information to the information processing unit via any one or more of the following three methods: Wi-Fi, Bluetooth, and Zigbee.

[0017] Preferably, the power supply branch lines and power supply busbars can be fixed to the square wire mesh by means of cable ties or adhesive bonding.

[0018] Preferably, the power supply voltage is between 5V and 12V to fully ensure electrical safety.

[0019] According to another aspect of the present invention, a measurement method for the cooling tower water drop uniformity measuring device described above is provided, the technical solution of which includes the following steps:

[0020] Step S1: Tension the square net of the cooling tower water drop uniformity measuring device and suspend it above the water pool at the bottom of the cooling tower, so that the square net is laid out horizontally and all measuring instruments are below the square net.

[0021] Step S2: Project the water surface of the pool at the bottom of the cooling tower vertically upwards, number all measuring instruments in its projection area from 1 to N, where N is the total number of numbered measuring instruments, and record the position of the suspension node of each numbered measuring instrument in the square grid.

[0022] Step S3: Turn on the terminal platform and power all the measuring blocks. At fixed time intervals, the temperature change data of the cone body is collected and stored by the temperature sensor.

[0023] Step S4: When any of the following conditions are met, turn off the power, stop the power supply to the measuring block, and end the measurement:

[0024] Condition 1: The measurement duration in step S3 reaches t, where t is between 5 minutes and 30 minutes;

[0025] Condition 2: The temperature value measured by any temperature sensor reaches the disconnection temperature threshold Tc, where Tc is between 50℃ and 70℃;

[0026] Condition 3: In any E consecutive measurements by any temperature sensor, the measured temperature change amplitude ΔT E Less than ΔT C Where E is between 3 and 30, ΔTc is between 0.1℃ and 0.5℃, and the temperature change range ΔT E It is the difference between the maximum and minimum values ​​in the E measurements;

[0027] Step S5: Calculate the temperature difference sequence [T1, T2, ..., T] based on the measurement results. i …, T N ], where N is the total number of numbered measuring instruments, and T is the element value in the temperature difference sequence. i , is the difference between the temperature measurement value at the end of the measurement by the measuring instrument numbered i and the temperature measurement value at the start of the measurement;

[0028] Step S6: Calculate the coefficient of variation (CV) of the temperature difference sequence in step S5 to reflect the uniformity of water flow, where CV is the ratio of the standard deviation to the mean of all elements in the temperature difference sequence.

[0029] This invention applies the principles of fluid mechanics and heat transfer. The branch pipes, nozzles, and packing in the upper structure of the cooling tower all affect the uniformity of water distribution, which ultimately manifests as the uniformity of waterfall above the bottom reservoir. A square mesh is used to evenly arrange an array of measuring devices above the bottom reservoir. Before power is supplied to the measuring blocks, the temperatures measured by all devices are almost identical. When the square mesh is taut above the bottom reservoir and power is supplied, the heat-generating resistors in the measuring blocks generate heat, causing the temperature of the conical body collected by the temperature sensors to continuously rise. Simultaneously, water falls from above onto the conical body, cooling it down. The final effect is that the conical body heats up more slowly in areas with more waterfall and more quickly in areas with less waterfall. Since each measuring block is connected in parallel to the power supply bus, the heat generation power of each heat-generating resistor is consistent. By comparing the temperature rise of each conical body at the beginning and end of the test, the amount of waterfall on the conical body during the test can be indirectly reflected.

[0030] Therefore, in order to improve the universality of the measurement method, the coefficient of variation (CV) of each temperature rise amplitude was finally obtained by statistical methods to evaluate the uniformity of cooling tower water drop. The smaller the CV, the closer the temperature rise amplitude of each cone body is, and the higher the uniformity of cooling tower water drop. Conversely, the larger the CV, the more dispersed the temperature rise amplitude distribution data of each cone body is, and the lower the uniformity of cooling tower water drop.

[0031] In addition, to ensure measurement reliability and improve efficiency, the measurement will stop and the measurement results will be analyzed when any one of the following three conditions is met: the upper limit of measurement duration is reached, any temperature measurement value reaches the disconnection temperature threshold Tc, or any temperature measurement value tends to remain unchanged.

[0032] Based on the above principles, the following beneficial effects of the present invention can be easily observed:

[0033] 1. This invention relates to a cooling tower water drop uniformity measuring device. It indirectly reflects the water drop uniformity by measuring the temperature rise of a uniformly distributed conical array. The main body of the device consists of a square mesh and measuring devices and cables suspended or fixed to the mesh. When not in use, the square mesh can be rolled up for storage, saving space. When in use, the mesh is simply opened and tensioned, and then suspended and fixed using the cooling tower support or other structural elements. The measuring device, with the aid of a mounting block, is easily kept in a pointed-top, wide-bottom position, facilitating the measurement of water drop within a certain surrounding area. The sensor and heating resistor, among other electrical components, are located inside the measuring device, avoiding contact with water and thus extending their lifespan. When individual measuring devices are damaged, they can be easily detached from the square mesh for replacement. Therefore, this measuring device is simple in structure, easy to maintain, low in cost, and convenient to operate. Furthermore, the normally closed temperature control switch design ensures that the measuring device temperature never exceeds its disconnection temperature threshold, promoting electrical safety and preventing burns to operators.

[0034] 2. The cooling tower water drop uniformity measurement method of the present invention indirectly reflects the water drop uniformity by relying on the testing and statistics of temperature rise. The logic of the test process is simple, stable and reliable, and easy to program. The corresponding measurement result processing method is scientific, reliable and universal. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the square mesh and measuring device of the cooling tower water drop uniformity measuring device in an embodiment of the present invention. In the figure, 1 is the square mesh and 2 is the measuring device.

[0036] Figure 2 This is a schematic diagram of a partial square mesh of the cooling tower water drop uniformity measuring device and its corresponding measuring device in an embodiment of the present invention. In the figure, 2 is the measuring device, 3 is the power supply branch line, 11 is the two mesh wires of the partial square mesh, 12 is the knot formed by the interlacing of the two mesh wires 11, 21 is the suspension coil, 22 is the suspension wire, 23 is the conical body, 233 is the counterweight, and 234 is the measuring block located inside the conical body 23.

[0037] Figure 3 This is a schematic diagram of the conical body of the measuring device in the cooling tower water drop uniformity measuring device in an embodiment of the present invention. In the figure, 3 is the power supply branch line, 231 is the top cover, 232 is the bottom cover mechanically connected to the top cover 231, 233 is the counterweight block, and 234 is the measuring block located inside the conical body 23.

[0038] Figure 4 This is a schematic diagram of the measuring block and the power supply branch line electrically connected to it in the cooling tower water drop uniformity measuring device in an embodiment of the present invention. In the figure, 3 is the power supply branch line, 234 is the measuring block, 2341 is the normally closed temperature control switch, 2342 is the heat generation resistor, 2343 is the temperature sensor, and 2344 is the signal transmitter.

[0039] Figure 5 This is a schematic diagram of the electrical connection between the power supply branch and the terminal platform of the cooling tower water drop uniformity measuring device in an embodiment of the present invention. In the figure, 3 is the power supply branch, 4 is the terminal platform, 41 is the power supply, and 42 is the laptop computer.

[0040] Figure 6 This is a schematic diagram of the power supply wiring for the cooling tower water drop uniformity measuring device in an embodiment of the present invention. In the figure, 3 is the power supply branch line, 5 is the power supply bus, and 41 is the power source.

[0041] Figure 7 This is a schematic diagram of the cooling tower structure in an embodiment of the present invention. In the figure, 61 is the tower top fan, 62 is the water inlet header, 63 is the water distribution branch pipe, 64 is the nozzle, 65 is the packing layer, 66 is the support structure, 67 is the tower bottom water pool, and 68 is the water outlet pipe. Detailed Implementation

[0042] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0043] like Figures 1 to 6 As shown, a cooling tower water drop uniformity measuring device is used to measure the water drop uniformity above the water pool at the bottom of the cooling tower. It consists of a square mesh 1, a measuring device 2, a power supply branch line 3, a terminal platform 4, and a power supply busbar 5, wherein:

[0044] All grids of the square mesh 1 are square, and a measuring device 2 is suspended on each node of the square mesh 1 except at the edge.

[0045] The measuring device 2 includes a suspension line 22 and a hollow conical body 23 connected thereto. The conical body 23 includes a top cover 231, a bottom cover 232 mechanically connected to the top cover 231, and a measuring block 234 located inside the conical body 23.

[0046] The measuring block 234 includes a series circuit consisting of a normally closed temperature control switch 2341 and a heat-generating resistor 2342, as well as a temperature sensor 2343 and a signal transmitter 2344 that are electrically connected to each other.

[0047] The terminal platform 4 includes a power supply 41 and an information processing unit 42. The power supply 41 supplies power to all the measuring blocks 234 through the power supply bus 5.

[0048] Each measuring block 234 is connected to a power supply branch line 3 and draws power from the power supply bus 5 through the power supply branch line 3 that is electrically connected to it, that is, each measuring block 234 is connected in parallel to the power supply bus.

[0049] The signal transmitter 2344 in each measuring block 234 is used to acquire the temperature value measured by the temperature sensor 2343 electrically connected to it in real time and transmit it to the information processing unit 42.

[0050] In the above-mentioned cooling tower water drop uniformity measuring device, the measuring block 234 inside the conical body 23 is fixed on the inner wall surface of either the top cover 231 or the bottom cover 232.

[0051] The cooling tower water drop uniformity measuring device described above, wherein the top cover 231 and bottom cover 232 of the conical body 23 are made of any one of the following five materials: ceramic, copper, aluminum, copper alloy, and aluminum alloy.

[0052] The cooling tower water drop uniformity measuring device described above also includes a counterweight block 233 on the bottom cover 232 of the conical body 23.

[0053] In the above-mentioned cooling tower water drop uniformity measuring device, the normally closed temperature control switch 2341 has an opening temperature threshold of Tc, where Tc is between 50℃ and 70℃.

[0054] Furthermore, the signal transmitter 2344 transmits the temperature measurement information to the information processing unit 42 via any one or more of the following three methods: wireless Wi-Fi, Bluetooth, and Zigbee.

[0055] Furthermore, the power supply branch line 3 and the power supply bus 5 can be fixed to the square mesh 1 by means of cable ties or adhesive bonding.

[0056] Furthermore, the power supply voltage is between 5V and 12V to fully ensure electrical safety.

[0057] A measurement method for the cooling tower water drop uniformity measuring device mentioned above, the measurement method comprising the following steps:

[0058] Step S1: Tension the square net 1 of the cooling tower water drop uniformity measuring device and suspend it above the water pool at the bottom of the cooling tower, so that the square net 1 is laid out horizontally and all measuring devices 2 are below the square net 1.

[0059] Step S2: Project the water surface of the pool at the bottom of the cooling tower vertically upwards, number all measuring devices 2 in their projection area from 1 to N, where N is the total number of numbered measuring devices, and record the position of the suspension node of each numbered measuring device in the square net 1.

[0060] Step S3: Turn on the terminal platform 4 and power the power supply 41 to supply power to all the measuring blocks 234. At fixed time intervals, the temperature sensor 2343 collects and stores the temperature change data of the conical body 23.

[0061] Step S4: When any of the following conditions are met, turn off power supply 41, stop power supply to measuring block 234, and end the measurement:

[0062] Condition 1: The measurement duration in step S3 reaches t, where t is between 5 minutes and 30 minutes;

[0063] Condition 2: The temperature value measured by any temperature sensor 2343 reaches the disconnection temperature threshold Tc, where Tc is between 50℃ and 70℃;

[0064] Condition 3: In any E consecutive measurements by any temperature sensor 2343, the measured temperature change amplitude ΔT E Less than ΔT C Where E is between 3 and 30, ΔTc is between 0.1℃ and 0.5℃, and the temperature change range ΔT E It is the difference between the maximum and minimum values ​​in the E measurements;

[0065] Step S5: Calculate the temperature difference sequence [T1, T2, ..., T] based on the measurement results.i …, T N ], where N is the total number of numbered measuring instruments, and T is the element value in the temperature difference sequence. i , is the difference between the temperature measurement value at the end of the measurement by the measuring instrument numbered i and the temperature measurement value at the start of the measurement;

[0066] Step S6: Calculate the coefficient of variation (CV) of the temperature difference sequence in step S5 to reflect the uniformity of water flow, where CV is the ratio of the standard deviation to the mean of all elements in the temperature difference sequence.

[0067] It should be noted that, for the sake of convenience, Figure 1 Only one measuring device 2 is marked, from Figure 1 It is not difficult to see that measuring devices 2 are installed at all non-edge mesh nodes; Figure 3 The power supply branch 3 supplies power to both the series circuit consisting of the normally closed temperature control switch 2341 and the heat-generating resistor 2342, and the signal transmitter 2344. Figure 6 For illustrative purposes, only two parallel structures are drawn and only one power supply branch 3 is marked. In reality, all power supply branches 3 are connected in parallel to the power supply bus 5, and one measuring instrument corresponds to one power supply branch 3. The ellipsis of the three dots in the figure represents the omission of other power supply branches 3.

[0068] like Figure 7 As shown, a cooling tower water drop uniformity measuring device is used for measurement. The cooling tower under test consists of a top fan 61, an inlet header 62, distribution branch pipes 63, nozzles 64, a packing layer 65, a support structure 66, a bottom water tank 67, and an outlet pipe 68. During measurement, a square mesh 1 is taut and suspended above the bottom water tank 67. In practice, the area covered by the square mesh 1 may exceed the projected area of ​​the bottom water tank 67, resulting in some redundant areas of the square mesh 1. In this case, the measuring devices 2 on the extra square mesh 1 are not numbered, and their measured values ​​are not used for subsequent data analysis and processing, thus not affecting the measurement. This allows the measuring device to adapt well to cooling towers of various sizes.

[0069] Example

[0070] Please refer to Figure 1The square grid 1 of the cooling tower water drop uniformity measuring device has a size of 4m × 4m, so each grid has a size of 0.5m × 0.5m, resulting in 49 nodes 12 (7 × 7) excluding the edges. Each node 12 has a measuring device 2 suspended from it. The measuring block 234 inside the conical body 23 is fixed to the inner wall of the bottom cover 232. The top cover 231 and bottom cover 232 of the conical body 23 are made of aluminum. The normally closed temperature control switch 2341 has a breaking temperature threshold of Tc of 55℃. The signal transmitter 2344 transmits the temperature measurement information to the information processing unit 42 wirelessly via Wi-Fi. The power supply branch line 3 and power supply bus 5 are fixed to the square grid 1 by cable ties. The power supply voltage is 5V. This device is applied to a cooling tower for measurement. The horizontal dimensions of the water tank 67 at the bottom of the cooling tower are 2.6m × 2.6m. After the square net 1 is tensioned and suspended above the water tank 67 at the bottom of the cooling tower, only 6×6, or 36, measuring devices 2 in the square net 1 are within the range of the vertical upward projection of the water surface at the bottom of the cooling tower. See details. Figure 1 Measuring devices 2 are enclosed in the dashed box and numbered from 1 to 36. During the measurement process, the sampling time interval of temperature sensor 2343 is 10 seconds. Among the three conditions for the end of the measurement, the measurement duration t in condition one is 10 minutes, the disconnection temperature threshold Tc in condition two is 55℃, and the parameters E and ΔTc in condition three are 10 and 0.2℃, respectively.

[0071] Measurements were taken when the cooling tower under test was first put into operation. At the start of the measurement, the temperature values ​​of each measuring instrument 2 were within the range of 20±0.2℃. During the measurement process, none of the temperature values ​​reached the disconnection temperature threshold Tc or showed a stable trend, so the measurement was terminated after 10 minutes. The temperature difference sequence was calculated based on the measurement results, and its standard deviation and mean were statistically obtained as 1.2℃ and 15℃, respectively. Dividing the two, the coefficient of variation (CV) of the temperature difference sequence was calculated to be 0.08.

[0072] The cooling tower was measured again after two years of operation. The standard deviation and average value of the measured values ​​were 3.9℃ and 18℃, respectively. Dividing the two values ​​by the average value, the coefficient of variation (CV) of the temperature difference series was 0.22, which is significantly higher than the 0.08 measured when the tower was first started. This indicates that the uniformity of water droplets in the cooling tower has deteriorated significantly after two years of operation.

[0073] Because the measurement process collected temperature values ​​from all measuring instruments and recorded their relative positions beforehand, abnormal areas within the cooling tower could be further identified based on the measurement results. Elements in the temperature difference sequence greater than μ+Kσ or less than μ-Kσ were identified as outliers, and the abnormal areas of the cooling tower were determined by the positions of the measuring instruments corresponding to these outliers. Here, σ and μ are the standard deviation and mean of the temperature difference sequence, respectively, and K ranges from 2 to 5. For areas corresponding to elements in the temperature difference sequence greater than μ+Kσ, operators were advised to consider the possibility of blockages in related components; for areas corresponding to elements in the temperature difference sequence less than μ-Kσ, operators were advised to consider the possibility of damage or missing related components.

[0074] In addition to measuring and comparing the coefficient of variation (CV) of cooling towers at different times to evaluate the relative changes in their water drop uniformity, the CV of different individual cooling towers of the same model can also be measured and compared to identify abnormal individual cooling towers, thereby reminding operators to check and maintain them.

[0075] The cooling tower water drop uniformity measuring device provided in this embodiment indirectly reflects the water drop uniformity by measuring the temperature rise of a uniformly distributed conical array. The main body of the device consists of a square mesh and measuring instruments and cables suspended or fixed by the mesh. When not in use, the square mesh can be rolled up for storage, saving space. When in use, the square mesh can be opened and tensioned, and then suspended and fixed by means of structures such as cooling tower supports. The measuring instrument is easily kept in a pointed top and wide bottom position with the help of the configuration block, which is beneficial for obtaining water drop within a certain range. The sensor and heating resistor and other electrical components are located inside the measuring instrument and do not come into contact with water, which helps to ensure their service life. When individual measuring instruments are damaged, they can be easily detached from the square mesh for replacement. Therefore, the measuring device has a simple structure, is easy to maintain, has low cost, and is easy to operate. In addition, the normally closed temperature control switch design ensures that the temperature of the measuring instrument never exceeds its disconnection temperature threshold, which is beneficial to electrical safety and avoids burns to operators.

[0076] The cooling tower water drop uniformity measurement method provided in this embodiment utilizes the principles of fluid mechanics and heat transfer, and relies on the testing and statistics of temperature rise to indirectly reflect the water drop uniformity. The logic of the test process is simple, stable, reliable, and easy to program. The corresponding measurement result processing method is scientific, reliable, and universally applicable. The water drop uniformity of an individual cooling tower can be evaluated by the relative change trend or relative difference of the coefficient of variation (CV), and operators can be alerted to abnormal areas.

Claims

1. A method for measuring the uniformity of cooling tower water droplets, characterized in that, A measuring device is used to measure the uniformity of water droplets in a cooling tower, positioned above the water tank at the bottom. This device consists of a square grid (1), a measuring instrument (2), a power supply branch line (3), a terminal platform (4), and a power supply busbar (5), wherein: All grids of the square mesh (1) are square, and a measuring device (2) is suspended on all nodes of the square mesh (1) except at the edges; The measuring device (2) includes a suspension line (22) and a hollow conical body (23) connected thereto. The conical body (23) includes a top cover (231), a bottom cover (232) mechanically connected to the top cover (231), and a measuring block (234) located inside the conical body (23). The measuring block (234) includes a series circuit consisting of a normally closed temperature control switch (2341) and a heat-generating resistor (2342), as well as a temperature sensor (2343) and a signal transmitter (2344) that are electrically connected to each other; The terminal platform (4) includes a power supply (41) and an information processing unit (42). The power supply (41) supplies power to all the measuring blocks (234) through the power supply bus (5). Each measuring block (234) is connected to a power supply branch line (3) and draws power from the power supply bus (5) through the power supply branch line (3) that is electrically connected to it; The signal transmitter (2344) in each measuring block (234) is used to acquire the temperature value measured by the temperature sensor (2343) electrically connected to it in real time and transmit it to the information processing unit (42); The method includes the following steps: Step S1: Tension the square net (1) of the cooling tower water drop uniformity measuring device and suspend it above the water pool at the bottom of the cooling tower, so that the square net (1) is laid out horizontally and all measuring devices (2) are below the square net (1). Step S2: Project the water surface of the pool at the bottom of the cooling tower vertically upwards, number all measuring devices (2) in its projection area from 1 to N, where N is the total number of numbered measuring devices, and record the position of the suspension node of each numbered measuring device in the square net (1). Step S3: Turn on the terminal platform (4) and power the power supply (41) to power all the measuring blocks (234). At fixed time intervals, the temperature change data of the cone body (23) is collected and stored by the temperature sensor (2343). Step S4: When any of the following conditions are met, turn off the power (41), stop the power supply to the measuring block (234), and end the measurement: Condition 1: The measurement duration in step S3 reaches t, where t is between 5 minutes and 30 minutes; Condition 2: The temperature value measured by any temperature sensor (2343) reaches the disconnection temperature threshold Tc, where Tc is between 50℃ and 70℃; Condition 3: In any E consecutive measurements by any temperature sensor (2343), the measured temperature change amplitude ΔT E Less than ΔT C Where E is between 3 and 30, ΔT C The temperature change range ΔT is between 0.1℃ and 0.5℃. E It is the difference between the maximum and minimum values ​​in the E measurements; Step S5: Calculate the temperature difference sequence [T1, T2, ..., T] based on the measurement results. i …, T N ], where N is the total number of numbered measuring instruments, and T is the element value in the temperature difference sequence. i , is the difference between the temperature measurement value at the end of the measurement by the measuring instrument numbered i and the temperature measurement value at the start of the measurement; Step S6: Calculate the coefficient of variation (CV) of the temperature difference sequence in step S5 to reflect the uniformity of water flow, where CV is the ratio of the standard deviation to the mean of all elements in the temperature difference sequence.

2. The method for measuring the uniformity of cooling tower water droplets according to claim 1, characterized in that, The measuring block (234) inside the conical body (23) is fixed on the inner wall surface of either the top cover (231) or the bottom cover (232).

3. The method for measuring the uniformity of cooling tower water droplets according to claim 1, characterized in that, The top cover (231) and bottom cover (232) of the conical body (23) are made of any one of the following five materials: ceramic, copper, aluminum, copper alloy, and aluminum alloy.

4. The method for measuring the uniformity of cooling tower water droplets according to claim 1, characterized in that, The bottom cover (232) of the conical body (23) is also provided with a counterweight (233).

5. The method for measuring the uniformity of cooling tower water droplets according to claim 1, characterized in that, The normally closed temperature control switch (2341) has an opening temperature threshold of Tc, where Tc is between 50°C and 70°C.

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