A cooling tower dynamic water balance detection system

Abstract

The present invention discloses a cooling tower dynamic water balance detection system, comprising: an operating terminal, a mobile float, a comprehensive signal analysis and control box, and a water quantity measuring device; the operating terminal is communicatively connected to the comprehensive signal analysis and control box, which is in turn communicatively connected to the water quantity measuring device; the water quantity measuring device is mounted on the mobile float and is used to detect the amount of circulating water in the cooling tower; the comprehensive signal analysis and control box is used to analyze the sampled data of the water quantity measuring device to obtain the water density; the operating terminal plans the path of the mobile float based on the float position information, and controls the posture movement of the mobile float to achieve dynamic sampling. The present invention implements mobile sampling and measurement at randomly selected measurement points, making the setting of cooling tower measurement points more reasonable, and the measured data is true, accurate, effective, and highly adaptable.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling tower circulating water balance performance detection technology, and more particularly to a cooling tower dynamic water balance detection system. Background Art

[0002] Cooling tower water volume testing primarily measures the density of water dripping inside the tower and calculates the water volume. Based on the water density measurement method outlined in the power industry standard "Industrial Cooling Tower Test Procedure," water volume is measured at the surface of the cooling tower's sump using a water collection container or an automatic counting flap rain gauge.

[0003] The current conventional method for measuring water density in cooling towers involves deploying multiple relatively fixed floats on the surface of a water collection tank, using water flow and tow ropes to position the floats. For example, the patent "CN202011173884.2: A System for Measuring Water Density and Post-Cooling Water Temperature Distribution in Cooling Towers" uses this method. However, due to the disordered flow direction within the water collection tank, it is difficult to evenly distribute the floats across the surface. While different floating sensor platform coordinates can be set, the design error for float positioning, which relies on water flow and tow ropes, is high. In actual industrial production, water density within cooling towers is characterized by high water density and a highly uneven distribution across the horizontal surface of the cooling tower. This, along with float positioning errors, significantly impacts the reliability of water sampling and the accuracy of test results. The patent uses a tipping bucket rain gauge to measure water density, but the bucket in this gauge is inherently incapable of responding to high flow rates and heavy rainfall inputs, making it unsuitable for cooling towers measuring 2,000 to 10,000 square meters and difficult to operate. For piezoelectric rain gauges, since they measure free-falling raindrops as the basis of measurement, they are not suitable for water tower spray measurement.

[0004] Therefore, how to provide a real-time, effective, and high-precision mobile detection system for dynamic water balance is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, in order to solve at least one technical problem in the above-mentioned prior art, the present invention provides a cooling tower dynamic water balance detection system, which can perform real-time, effective and high-precision mobile detection of dynamic water balance, increase the sampling area, comply with the cooling tower circulating water sprinkling working conditions, and realize mobile sampling measurement of randomly selected measuring points, so that the setting of cooling tower measurement points is more reasonable, and the measured data is true, accurate, effective and highly adaptable.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A cooling tower dynamic water balance detection system includes: an operating terminal, a mobile float, a comprehensive signal analysis and control box, and a water quantity measuring device; the operating terminal is communicatively connected to the comprehensive signal analysis and control box, and the comprehensive signal analysis and control box is communicatively connected to the water quantity measuring device;

[0008] The water quantity measuring device is installed on the mobile float and is used to detect the amount of circulating water in the cooling tower;

[0009] The integrated signal analysis and control box is used to analyze the sampling data of the water quantity measuring device to obtain the water density;

[0010] The operating end plans a path for the mobile float based on the float position information, and controls the posture movement of the mobile float to achieve dynamic sampling.

[0011] Preferably, the water volume measuring device includes a funnel-shaped rain gauge, a water storage barrel, a drain solenoid valve, a water level sensor and a switch cover. The funnel-shaped rain gauge is arranged on the top of the water storage barrel, and the switch cover is arranged at the connection between the funnel-shaped rain gauge and the water storage barrel. The water level sensor is arranged in the water storage barrel for detecting the water level height in the water storage barrel. The drain solenoid valve is provided on one side of the water storage barrel, and the drain solenoid valve is used to automatically drain when the water level height in the water storage barrel exceeds the limit.

[0012] Preferably, it also includes a timer and a counter, which are integrated in the comprehensive signal analysis and control box. The timer is used to set the timing duration of a water volume detection, and the counter is used to calculate the number of water volume detections within the timing duration.

[0013] Preferably, the mobile floating body includes two cabins, and the two cabins are symmetrically arranged.

[0014] Preferably, it also includes a support frame, which is symmetrically fixed on the top of the two cabins, the funnel-shaped rain gauge is fixed on the support frame, and the water storage barrel is located at the bottom of the support frame.

[0015] Preferably, it also includes a water quality sensor and a water temperature sensor, both of which are communicatively connected to the integrated signal analysis and control box, and the water quality sensor and the water temperature sensor are fixed on a first fixed bracket, which is fixed between the two compartments.

[0016] Preferably, the water quality sensor includes a TDS sensor, a chloride ion sensor, a calcium ion sensor, a COD sensor and a silver sulfur ion sensor.

[0017] Preferably, the water density ρ is calculated by the following formula:

[0018]

[0019] Where Hi represents the liquid level, N represents the number of drainage times, T represents the duration, and i = 1, 2, ... N.

[0020] Preferably, the operating end includes a control module, a positioning information acquisition module, a wireless communication module and a power supply module. The control module is connected to the positioning information acquisition module, the wireless communication module and the power supply module respectively. The wireless communication module is communicated with the comprehensive signal analysis and control box. The positioning information acquisition module is used to realize the collection of the position information of the mobile float. The control module is used to plan the path of the mobile float based on the position information of the mobile float, control the posture movement of the mobile float to realize dynamic sampling, and receive and analyze the sampling data of the water quantity measuring device.

[0021] Preferably, it further comprises a second fixing bracket, which is arranged between the two compartments, and the water storage barrel is located on the second fixing bracket.

[0022] The present invention has the following effects:

[0023] (1) The fixed measurement method is innovatively changed to a mobile one, which realizes mobile sampling measurement at randomly selected measurement points, reduces the difficulty of detecting the circulating water in the cooling tower, and provides relatively accurate data support for the current water balance of the cooling tower; and can intelligently plan the path of the mobile float in real time according to the specific water spraying conditions in the cooling tower, thereby improving the rationality of the detection results and making the data more accurate.

[0024] (2) By designing a new water quantity measuring device and taking a mobile float as a carrier to design a detection method for the water quantity and water quality of the cooling tower, the water collection capacity of the cooling tower can be verified and the problem of unstable water collection caused by uneven water spraying can be overcome. The method is simple to operate, the measuring points are random, and the mobility is strong. Compared with the test method of artificially fixed measuring points, the present invention is more practical and fast in the cooling tower spray environment, and the obtained water spray density is more real and effective, avoiding the objectivity of artificially fixed measuring points.

[0025] (3) The mobile float has a split structure, which makes it more stable and has stronger wind resistance.

[0026] (4) The water volume measurement device directly uses a program-controlled water volume collection method to achieve single-time large-volume collection, meeting the requirements of accurate sampling in the cooling tower's heavy rainfall and high-flow rate spray environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0028] Figure 1 The accompanying drawing is a schematic diagram of the overall structure of a cooling tower dynamic water balance detection system provided by the present invention.

[0029] Figure 2 The accompanying drawing is a schematic structural diagram of the mobile float and water volume measuring device provided by the present invention.

[0030] Figure 3 The accompanying drawing is a schematic structural diagram of the water quantity measuring device provided by the present invention.

[0031] In the figure, 1. operating end, 2. mobile float, 201. cabin, 3. water quantity measuring device, 301. funnel-shaped rain gauge, 302. water storage tank, 303. drainage solenoid valve, 304. switch cover, 4. integrated signal analysis and control box, 5. water quality sensor, 6. water temperature sensor, 7. first fixed bracket, 8. second fixed bracket, 9. support bracket. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The embodiment of the present invention discloses a cooling tower dynamic water balance detection system. Figure 1 and Figure 2 As shown, it includes: an operating terminal 1, a mobile float 2, a water quantity measuring device 3 and a comprehensive signal analysis and control box 4; the operating terminal 1 is directly connected to the comprehensive signal analysis and control box 4 wirelessly, and the comprehensive signal analysis and control box 4 is connected to the water quantity measuring device 3 by wire;

[0034] The operating terminal 1 is used to plan the path of the mobile float, control the posture of the mobile float through the driving mechanism to achieve dynamic sampling, and receive and analyze the sampling data of the water quantity measuring device, wherein the driving mechanism can be driven by a motor;

[0035] The water quantity measuring device 3 is installed on the mobile float 2 and is used to detect the amount of circulating water in the cooling tower;

[0036] The comprehensive signal analysis and control box 4 is used to analyze the sampling data of the water quantity measuring device to obtain the water density.

[0037] Specifically, the operating terminal 1 is primarily responsible for controlling the mobile float's posture and motion, wireless image transmission and video monitoring, and displaying and sending control commands to the mobile float. The operating terminal 1 communicates with the integrated signal analysis and control box 4 via a wireless serial communication system. Upon startup, the software automatically scans key values ​​and immediately transmits the corresponding data frame upon detecting a key press. It also parses and processes the received protocol frames from the mobile float. The system includes a control module, a positioning information acquisition module, a wireless communication module, and a power supply module. The control module is connected to the positioning information acquisition module, the wireless communication module, and the power supply module, respectively. The wireless communication module is in communication with the integrated signal analysis and control box. The positioning information acquisition module is used to collect the mobile float's position information. The control module is used to plan the mobile float's path based on the mobile float's position information, control the mobile float's posture and motion to achieve dynamic sampling, and receive and analyze the sampled data. The parsed data includes transmitted water volume data, float position information, water quality sensor data, and control feedback information, and performs related operations such as recording, analysis, and statistical processing.

[0038] More specifically, the wireless communication module integrates 5G transmission remote control technology.

[0039] A GPS base station is established outside the cooling tower's water collection basin to position and control the mobile float. The operator can intelligently plan the mobile float's path in real time based on the specific water conditions within the cooling tower.

[0040] In this embodiment, since the mobile detection needs to be designed to be suitable for the cooling tower water collection tank and needs to have high stability and controllability, the shape structure of the mobile float 2 is designed as follows: Figure 2 As shown, it is made of stainless steel or aluminum alloy and has two independent compartments 201. At the same time, the possibility of water ingress is very low, which improves the safety and stability of the floating body operation. The floating body is split, leaving a large space in the middle to facilitate the installation of water quality sampling and the placement of cooling tower water quantity measuring devices. The split structure is convenient for disassembly and assembly, and is convenient for the recovery and carrying of the device. It can also be anchored. Due to the influence of wind, the floating body should be able to stay within the mooring range within a certain period of time. The anchoring position is determined by the planned trajectory of the floating body. The anchor is dropped at the stop position in the planned trajectory, and the anchor is raised after the stop time is up. The stop time is determined by the uniformity of the distribution of the water density within a certain range around the current position point. If the surrounding water density is evenly distributed, the stop time is shorter, otherwise the stop time is longer. This part is intelligently judged by the comprehensive signal analysis and the control program of the control box.

[0041] In this embodiment, the water quantity measuring device 3 communicates with the integrated signal analysis and control box. The specific structure of the water quantity measuring device 3 is as follows: Figure 3 As shown, the program-controlled water volume collection method is used directly to achieve a maximum watering area of ​​800mm in a single collection. 2 The water sample can meet the accurate sampling requirements under the heavy rainfall and high flow rate spraying environment of the cooling tower, including a funnel-shaped rain gauge 301, a water storage barrel 302, a drainage solenoid valve 303, a water level sensor and a switch cover 304. The funnel-shaped rain gauge 301 is arranged on the top of the water storage barrel 302, and the switch cover 304 is arranged at the connection between the funnel-shaped rain gauge 301 and the water storage barrel 302. The water level sensor is arranged in the water storage barrel 302 and is communicated with the comprehensive signal analysis and control box to detect the water level height in the water storage barrel within a certain period of time. A drainage solenoid valve 303 is arranged on one side of the water storage barrel 302. The drainage solenoid valve 303 is used to automatically drain the water when the water level in the water storage barrel exceeds the limit.

[0042] It also includes a support frame 9, which is symmetrically fixed on the top of the two cabins 201, a funnel-shaped rain gauge 301 is fixed on the support frame 9, and a water storage barrel 302 is located at the bottom of the support frame.

[0043] The capacity of water tank 302 is set according to specific needs; as long as it is greater than 100 mL, it will meet actual project requirements. Water tank 302 is equipped with a large-diameter drain outlet, which is drained via a solenoid valve. When the water level in water tank 302 reaches the set value, the lid on top of water tank 302 automatically closes, and the drain solenoid valve 303 automatically opens to drain the water. After drainage is complete, the lid opens, and rainfall collection begins again. The water volume measurement device records the number of drainages using a counter and transmits this information to the integrated signal analysis and control box 4. The integrated signal analysis and control box 4 calculates the water density per unit time, further deriving the cooling tower water output, which is then transmitted to the control terminal 1 by the integrated signal analysis and control box 4. The opening and closing of the lid of water tank 302 and the operation of the drain solenoid valve 303 are all directly controlled by the integrated signal analysis and control box 4. When the water level measured by the water level sensor in the water storage tank reaches the upper limit setting value, the cover is closed, the drain solenoid valve is opened, and drainage begins; when the water level measured by the water level sensor reaches the lower limit setting value, the drain solenoid valve is closed, the cover is opened, and the next cycle begins.

[0044] The specific implementation method of water density ρ is:

[0045] The timer is set to detect the water level for a timer of T hours, and the total number of detections by the device is N times. When the water level detection device is working, the switch cover 304 at the connection of the water storage bucket 302 is opened and the timer is started. The water level detection device collects the dripping water. After the timer is set, the switch cover is closed. After the switch cover 304 is completely closed, the liquid level detected by the water level sensor is read as Hi meters (i = 1, 2, ... N). The drain port is opened to drain the water. The water storage bucket 302 is drained, and a dripping water density detection process is completed. Then the next detection process is continued until the detection is completed. The dripping water density ρ is:

[0046]

[0047] In the formula, Hi represents the liquid level, N represents the number of drainage times, and T represents the time.

[0048] The counter and the timer are both integrated in the integrated signal analysis and control box 4, which is installed in the mobile floating cabin.

[0049] In this embodiment, if Figure 2 As shown, the system further includes a water quality sensor 5 and a water temperature sensor 6, which are in communication with the integrated signal analysis and control box 4 and are fixed to a first fixing bracket 7, which is fixed between the two compartments 201. The water quality sensor 5 includes a TDS sensor, a chloride ion sensor, a calcium ion sensor, a COD sensor, and a silver-sulfur ion sensor, which are respectively used to detect TDS, chlorine, calcium, COD, silver-sulfur content, and water temperature. Detection is performed directly by the sensors, and the detection data is transmitted to the integrated signal analysis and control box 4, and then transmitted back to the operation terminal 1 through the integrated signal analysis and control box 4.

[0050] In this embodiment, a second fixing bracket 8 is further included. The second fixing bracket 8 is disposed between the two compartments 201 , and the water storage barrel 302 is located on the second fixing bracket.

[0051] The dynamic sampling process of the present invention is:

[0052] ① Cruise path planning. Cruise path planning includes the float's cruise trajectory, stop location, and dwell time at that location. The cruise path can be set manually or automatically and intelligently by allowing the float to circle the edge of the water collection basin.

[0053] ② Automatic patrol. The floating body automatically patrols along the planned patrol route, collects water density and water quality information at each stop point on the patrol route, and calculates the water volume.

[0054] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0055] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cooling tower dynamic water balance detection system, characterized in that: include: An operating terminal, a mobile float, a comprehensive signal analysis and control box, and a water quantity measuring device; the operating terminal is communicatively connected to the comprehensive signal analysis and control box, and the comprehensive signal analysis and control box is communicatively connected to the water quantity measuring device; The water quantity measuring device is installed on the mobile float and is used to detect the water quantity of the cooling tower circulating water; The integrated signal analysis and control box is used to analyze the sampling data of the water quantity measuring device to obtain the water density; The operating terminal performs path planning for the mobile float based on the position information of the float, and controls the posture movement of the mobile float to realize dynamic sampling; The water volume measuring device includes a funnel-shaped rain gauge, a water storage barrel, a drainage solenoid valve, a water level sensor, and a switch cover. The funnel-shaped rain gauge is arranged on the top of the water storage barrel, and the switch cover is arranged at the connection between the funnel-shaped rain gauge and the water storage barrel. The water level sensor is arranged in the water storage barrel for detecting the water level in the water storage barrel. The drainage solenoid valve is arranged on one side of the water storage barrel for automatically draining the water when the water level in the water storage barrel exceeds the limit. It also includes a timer and a counter, which are integrated in the integrated signal analysis and control box. The timer is used to set the timing duration of a water volume detection, and the counter is used to count the number of water volume detections within the timing duration. The water density ρ is calculated by the following formula: Where Hi represents the liquid level, N represents the number of drainage times, T represents the duration, and i = 1, 2, ... N.

2. A cooling tower dynamic water balance detection system according to claim 1, characterized in that: The mobile floating body includes two cabins, and the two cabins are symmetrically arranged.

3. A cooling tower dynamic water balance detection system according to claim 2, characterized in that: It also includes a support frame, which is symmetrically fixed on the tops of the two cabins. The funnel-shaped rain gauge is fixed on the support frame, and the water storage barrel is located at the bottom of the support frame.

4. A cooling tower dynamic water balance detection system according to claim 2, characterized in that: It also includes a water quality sensor and a water temperature sensor, both of which are communicatively connected to the integrated signal analysis and control box, and the water quality sensor and the water temperature sensor are fixed on a first fixed bracket, which is fixed between the two compartments.

5. A cooling tower dynamic water balance detection system according to claim 4, characterized in that: The water quality sensors include a TDS sensor, a chloride ion sensor, a calcium ion sensor, a COD sensor and a silver sulfur ion sensor.

6. A cooling tower dynamic water balance detection system according to claim 1, characterized in that: The operating end includes a control module, a positioning information acquisition module, a wireless communication module and a power supply module. The control module is connected to the positioning information acquisition module, the wireless communication module and the power supply module respectively. The wireless communication module is communicated with the comprehensive signal analysis and control box. The positioning information acquisition module is used to realize the collection of the position information of the mobile float. The control module is used to plan the path of the mobile float based on the position information of the mobile float, control the posture movement of the mobile float to realize dynamic sampling, and receive and analyze the sampling data of the water quantity measuring device.

7. A cooling tower dynamic water balance detection system according to claim 3, characterized in that: It also includes a second fixing bracket, which is arranged between the two compartments, and the water storage barrel is located on the second fixing bracket.

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