A device and method for predicting water temperature in small and medium-sized river basins

Abstract

The application provides a small and medium-sized watershed water temperature prediction device and method, and relates to the technical field of water temperature monitoring. The detection assembly comprises a detection pipe, the top of the detection pipe is connected with a sealing frame through a bearing rotating sleeve, the top of the sealing frame is rotationally installed with a receiving pipe, the inside of the receiving pipe contains a temperature measuring probe, the bottom of the detection pipe is fixed with an expansion layer, the inside of the expansion layer is provided with a sealing plate, the bottom of the expansion layer is fixedly connected with a discharge pipe, the bottom of the discharge pipe is sealed and covered with a bottom cover, the top of two groups of receiving pipes is fixed with the same hanging rope, compared with the prior art, the water temperature of the surface layer and the deep layer of the water area can be monitored simultaneously through two groups of detection assemblies and connecting assemblies, the water body is sampled during the monitoring process, the sampling and monitoring processes are independently carried out, the monitoring water temperature is not affected by the water flow, the temperature measuring probe can be protected and the water body can be discharged after the detection is completed, so that the detection accuracy is maintained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water temperature monitoring, in particular to a small and medium-sized river basin water temperature prediction device and method. BACKGROUND

[0002] The construction of a hydropower station will have an impact on the temperature of the river water, mainly because the power generation process of the hydropower station will cause the temperature of the river water to rise. The hydropower station uses the flow of river water to drive the water turbine to generate electricity, and the water turbine will generate friction heat during operation, converting part of the mechanical energy into heat energy, thereby raising the temperature of the river water. In addition, the slowing down of the flow rate of the water body will also cause the water temperature to rise, because the slowing down of the flow rate of the water will reduce the heat loss of the water body, and the rise in water temperature will reduce the dissolved oxygen content, leading to the deterioration of the living conditions of aquatic organisms and the reduction in their species and quantity. The factors affecting the water temperature include the size of the hydropower station, the flow rate of the water, the width of the river, and the depth of the water, etc. Generally speaking, the shallower the water depth, the slower the flow rate of the water, and the more obvious the effect of the rise in water temperature. In order to better know the impact of the establishment of the hydropower station on the water temperature, it is necessary to monitor the water temperature of the water area near the hydropower station.

[0003] In the prior art, when measuring the water temperature, the temperature measuring device is inserted into the water. This technology can easily cause the following problems: on the one hand, the surface of the temperature measuring equipment is easily covered with silt or phytoplankton, affecting the detection accuracy; on the other hand, if the temperature sensor is installed in or near the flowing water body, the water flow can carry away part of the heat, causing the temperature around the sensor to change, thereby affecting the accuracy of the readings of the sensor. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application aims to provide a small and medium-sized river basin water temperature prediction method to solve the problems raised in the background art. The present application has a novel structure, and through two groups of detection components and connecting components, the water temperature of the surface layer and the deep layer of the water area can be monitored simultaneously. The water body is sampled during the monitoring process, and the sampling and monitoring processes are independent, ensuring that the monitored water temperature is not affected by the water flow. At the same time, after the detection is completed, the temperature measuring probe can be protected and the water body can be discharged to maintain the detection accuracy.

[0005] In order to achieve the above-mentioned purpose, the present application is realized by the following technical solution:

[0006] The present application provides a small and medium-sized river basin water temperature prediction device, comprising a mounting plate 1, a detection component 2, a connecting component 3, and a driving component 4.

[0007] The mounting plate 1 is used to be installed on the bank of the small and medium-sized river basin to be detected near the hydropower station, and the mounting plate 1 is horizontally arranged.

[0008] The detection assembly 2 is provided with two groups, and the two groups of detection assemblies 2 are hung at different height positions on the bottom of the mounting plate 1 and correspond to the surface water level and the deep water level respectively.

[0009] The connecting assembly 3 is used for connecting the two groups of detection assemblies 2, and the length of the connecting assembly 3 corresponds to the distance between the two groups of detection assemblies 2.

[0010] The driving assembly 4 is used for being connected with the top of the connecting assembly 3, and by driving the connecting assembly 3 to act, the two groups of detection assemblies 2 are driven to synchronously perform the actions of water taking, water body temperature detection and water discharging, so as to complete the sampling detection of the surface and deep water body temperatures; and based on the sampling detection result, the water temperature of the middle and small watersheds is predicted.

[0011] Further, each group of detection assemblies 2 comprises a detection pipe 21, a sealing frame 25 is rotatably sleeved on the top of the detection pipe 21 through a bearing, a receiving pipe 26 is rotatably installed on the top of the sealing frame 25, and a temperature measuring probe 211 is received in the receiving pipe 26; an expansion layer 23 is fixed on the bottom of the detection pipe 21, a sealing plate 314 is arranged in the expansion layer 23, an exhaust pipe 24 is fixedly connected to the bottom of the expansion layer 23, and a bottom cover 27 is sealingly covered on the bottom of the exhaust pipe 24.

[0012] The top of the receiving pipe 26 of the surface water level and the top of the receiving pipe 26 of the deep water level are fixedly connected with the same hanging rope 214, and the top of the hanging rope 214 is fixedly connected with the mounting plate 1.

[0013] The connecting assembly 3 comprises a first telescopic frame 31, the top and the bottom of the first telescopic frame 31 are respectively connected with the temperature measuring probe 211 of the surface water level and the temperature measuring probe 211 of the deep water level; a second telescopic frame 32 is arranged on one side of the first telescopic frame 31, the top and the bottom of the second telescopic frame 32 are respectively connected with the sealing plate 314 of the surface water level and the sealing plate 314 of the deep water level; the outer side of the expansion layer 23 of the surface water level and the outer side of the expansion layer 23 of the deep water level are respectively provided with a first driving shaft 33 and a second driving shaft 34; the first driving shaft 33 is connected with the bottom cover 27, and the second driving shaft 34 is connected with the sealing frame 25.

[0014] The driving assembly 4 comprises two connecting rods 42, and one connecting rod 42 is arranged at a position corresponding to the first telescopic frame 31 and the second telescopic frame 32 on the top of the mounting plate 1; one end of one connecting rod 42 is rotatably connected with the top of the first telescopic frame 31 through a rotating shaft, and one end of the other connecting rod 42 is rotatably connected with the top of the second telescopic frame 32 through a rotating shaft.

[0015] The top of the mounting plate 1 is fixedly provided with a control box 11.

[0016] Furthermore, the drive assembly 4 also includes two electric push rods 41; two electric push rods 41 are symmetrically fixed at the rear ends of the two connecting rods 42 on the top of the mounting plate 1, and the extended end of one electric push rod 41 is rotatably connected to one connecting rod 42 through a rotating shaft; the tops of the first drive shaft 33 and the second drive shaft 34 are rotatably mounted on the bottom of the mounting plate 1, and two sets of motors 43 are fixed on the top of the mounting plate 1, and the two sets of motors 43 are respectively fixedly connected to the first drive shaft 33 and the second drive shaft 34;

[0017] Driven by an electric push rod 41, the corresponding first telescopic frame 31 and / or second telescopic frame 32 are moved vertically via a connecting rod 42. Driven by a motor 43, the corresponding first drive shaft 33 and / or second drive shaft 34 are rotated, thereby simultaneously activating two sets of detection components 2 to detect the water temperature at different positions. The first telescopic frame 31 and the second telescopic frame 32 are reset by a spring 44.

[0018] Furthermore, each set of detection components 2 also includes an insulation sleeve 22 and a friction sleeve 28;

[0019] The outer side of the detection tube 21 is fitted with an insulation sleeve 22. The detection tube 21 and the discharge tube 24 have the same radius as the sealing plate 314, and the inner diameter of the extension layer 23 is larger than that of the detection tube 21 and the discharge tube 24.

[0020] A friction sleeve 28 is fixed on the inner wall of the receiving tube 26, and the outer surface of the temperature probe 211 slides in contact with the friction sleeve 28. A baffle 212 is provided at the bottom of the receiving tube 26, and the baffle 212 is fixedly connected to the bottom of the temperature probe 211. A first notch 29 is provided on the surface of the sealing frame 25, and a second notch 213 is provided at the top of the detection tube 21 corresponding to the position of the first notch 29.

[0021] Furthermore, the connecting assembly 3 also includes a connecting shaft 312. The connecting shaft 312 is fixed on one side of the top of the sealing plate 314, and the top of the connecting shaft 312 extends through the sealing frame 25 and is fixedly connected to the second telescopic frame 32. The sealing frame 25 is rotatably installed with a collar 210 corresponding to the position where the connecting shaft 312 extends, and the connecting shaft 312 is slidably and sealingly inserted into the collar 210.

[0022] Furthermore, a rod 313 is slidably inserted into the top of the storage tube 26, and the bottom of the rod 313 is inserted into the inside of the storage tube 26 and fixedly connected to the top of the temperature probe 211. The top of the rod 313 is fixedly connected to the first telescopic frame 31. Springs 44 are sleeved on the surface of the connecting shaft 312 at the top of the first telescopic frame 31 and the top of the second telescopic frame 32, and the bottom of the springs 44 is fixedly connected to the mounting plate 1.

[0023] Furthermore, a second connecting plate 39 is fixed on the surface of the second drive shaft 34 and the second connecting plate 39 is fixed on the outer wall of the storage tube 26. A first connecting plate 37 is fixed on the surface of the first drive shaft 33 and the first connecting plate 37 is fixedly connected to the bottom cover 27.

[0024] Furthermore, the first drive shaft 33 includes two sets of first drive shafts 33 coaxially arranged, and a plug shaft 35 is slidably inserted between the two sets of first drive shafts 33. The surface of the plug shaft 35 is symmetrically provided with protrusions 38, and the first drive shaft 33 is slidably engaged with the protrusions 38.

[0025] The second drive shaft 34 includes two sets of second drive shafts 34 coaxially arranged, and a plug shaft 35 is slidably inserted between the two sets of second drive shafts 34. The surface of the plug shaft 35 is symmetrically provided with protrusions 38, and the second drive shaft 34 is slidably engaged with the protrusions 38.

[0026] A toothed ring 311 is fixed to the top of the sealing frame 25, and a gear 310 is fixed to the surface of the second drive shaft 34 corresponding to the toothed ring 311. The gear 310 meshes with the toothed ring 311.

[0027] Locking bolts 36 are inserted into the surfaces of the first telescopic frame 31, the second telescopic frame 32, the first drive shaft 33, and the second drive shaft 34, and the locking bolts 36 are in contact with the extended ends of the first telescopic frame 31 and the second telescopic frame 32 and the inserted shaft 35.

[0028] This invention also provides a method for predicting water temperature in small and medium-sized watersheds using a water temperature prediction device, the prediction method comprising the following steps:

[0029] Step S1, Installation and Arrangement: Select a small or medium-sized watershed near the hydropower station, select a suitable location in the small or medium-sized watershed to be tested, install the mounting plate 1 on the bank, insert the two sets of detection components 2 connected to the mounting plate 1 into the water, and arrange the two sets of detection components 2 at the surface water level and the deep water level respectively according to the water depth.

[0030] Step S2, Connection and Installation: Connect the two sets of detection components 2 through the connecting component 3. The length of the connecting component 3 corresponds to the distance between the two sets of detection components 2. The top of the connecting component 3 is connected to the drive component 4 on the mounting plate 1.

[0031] Step S3, water temperature monitoring: The two sets of detection components 2 are driven simultaneously by the drive component 4 and the connection component 3 to sample and detect the temperature of the surface and deep water, and two sets of temperature data are obtained. Multiple sets of temperature data are obtained by selecting multiple points in the same water area and then changing to a different water area to perform water temperature monitoring again.

[0032] Step S4, predict water temperature: Classify the monitored small and medium-sized watersheds according to the size, length, distance from the hydropower station and water temperature data to obtain a database of different water areas. The database includes water area information and surrounding environment, as well as the rate of water temperature change, the temperature difference between the surface and deep water, and the predicted impact of the hydropower station on the water temperature of the surrounding water area. Compare the data with the monitoring data.

[0033] Step S5, Result Comparison: After comparing the prediction results with the monitoring data, the impact of building a hydropower station on the surrounding water area and water temperature is determined, as well as the prediction analysis of water temperature changes in similar water areas.

[0034] Furthermore, step S3 specifically includes:

[0035] In step S31, initially, each detection component 2 is in the initial state, that is: the first notch 29 of the sealing frame 25 is misaligned with the second notch 213 of the detection tube 21 to prevent water from entering the detection tube 21; at the same time, the baffle 212 seals the outlet end of the receiving tube 26, the temperature probe 211 is stored in the receiving tube 26, and the bottom cover 27 seals the discharge tube 24 to prevent water from entering the discharge tube 24.

[0036] Step S32: When each set of detection components 2 is in the initial state, insert the two sets of detection components 2 into the water and arrange the two sets of detection components 2 at the surface water level and the deep water level, respectively, according to the water depth.

[0037] Step S33: Simultaneously sample the two sets of detection components 2.

[0038] The second drive shaft 34 is driven to rotate by the motor 43. When the second drive shaft 34 rotates, it also drives the gears 310 of the two sets of detection components 2 to rotate. Since the gears 310 mesh with the gear ring 311, the sealing frames 25 of the two sets of detection components 2 are rotated. The first notch 29 corresponds to the second notch 213. Water flows into the inside of the detection tube 21 from the notch. Then the sealing frame 25 is reset. At this time, the inside of the detection tube 21 of the two sets of detection components 2 is filled with some water.

[0039] Step S34: Simultaneously measure the temperature of both sets of detection components 2.

[0040] The first telescopic frame 31 is driven to descend by the drive component 4, which drives the insertion rod 313 to move downward, and moves the surface water level and deep water level temperature probes 211 and baffles 212 downward synchronously. The surface water level and deep water level temperature probes 211 are inserted into the water in the corresponding detection tubes 21 to measure the current water temperature.

[0041] Step S35: Simultaneously drain water from both sets of detection components 2.

[0042] After the measurement is completed, the temperature probes 211 for the surface water level and deep water level are retracted. Then, the second telescopic frame 32 drives the sealing plates 314 for the surface water level and deep water level to descend via the connecting shaft 312. The sealing plates 314 enter the expansion layer 23. Because the size of the expansion layer 23 is larger than that of the discharge pipe 24 and the detection pipe 21, water will enter the interior of the discharge pipe 24. Then, the sealing plates 314 continue to descend and slide along the discharge pipe 24. The first drive shaft 33 rotates and opens the bottom cover 27 for the surface water level and deep water level. The water is pushed out of the discharge pipe 24 by the sealing plates 314 for the surface water level and deep water level. Then, the bottom cover 27 and the sealing plates 314 are reset. At this time, there will be no water residue inside the detection pipe 21 and the discharge pipe 24 to avoid interfering with the next set of water temperature detections.

[0043] The water temperature prediction device and method for small and medium-sized watersheds provided by this invention have the following advantages:

[0044] 1. In this invention, the first and second telescopic frames are adjusted to their corresponding lengths. The distance between the two sets of first and second drive shafts is connected by a plug shaft, which also corresponds to the distance between the two sets of detection components. The lengths of each part of the connecting components are locked by locking bolts, thereby ensuring that the two sets of detection components can synchronously complete the actions of water collection, detection, and drainage during sampling, improving detection efficiency and maintaining detection synchronicity. Because the first and second drive shafts are slidably engaged with the protrusions on the plug shaft, after length adjustment, the drive shafts can maintain synchronous rotation on the same straight line.

[0045] 2. The present invention prevents water from entering the detection tube by misaligning the first notch of the sealing frame with the second notch of the detection tube. At the same time, the baffle seals the outlet end of the receiving tube, the temperature probe is stored in the receiving tube, and the bottom cover seals the discharge tube to prevent water from entering the discharge tube.

[0046] 3. Because the size of the extended layer is larger than that of the discharge pipe and the detection pipe, water will enter the discharge pipe. Then the sealing plate continues to descend and slides along the discharge pipe. The first drive shaft rotates and opens the bottom cover. The water is pushed out of the discharge pipe by the sealing plate. Then the bottom cover and the sealing plate are reset. At this time, there will be no water residue in the detection pipe and the discharge pipe, which can avoid interfering with the water temperature monitoring of the next set.

[0047] 4. The present invention uses an insulating sleeve around the detection tube to keep the water warm after it enters the detection tube, preventing water temperature loss and making the temperature measurement more accurate. When the temperature probe returns to the storage tube after each detection, it will come into contact with the friction sleeve, which removes moisture and wipes the probe surface, preventing the accumulation of too many impurities and sludge on the temperature probe surface.

[0048] 5. This invention uses an electric push rod to drive a connecting rod that moves the first and second telescopic frames vertically. The first and second drive shafts are rotated by a motor, allowing two sets of detection components to be activated simultaneously to detect the water temperature at different locations. The first and second telescopic frames can be reset by springs.

[0049] 6. Compared with the prior art, the present invention can simultaneously monitor the surface and deep water temperature of a water body through two sets of detection components and connecting components. During the monitoring process, water samples are taken. The sampling and monitoring processes are carried out independently to ensure that the monitored water temperature is not affected by the water flow. At the same time, after the detection is completed, the temperature probe can be protected and the water can be sent out to maintain the detection accuracy. Attached Figure Description

[0050] Figure 1 This is a flowchart illustrating the method steps of a water temperature prediction method for small and medium-sized watersheds according to the present invention.

[0051] Figure 2 This is a schematic diagram of the overall structure of a water temperature prediction device for small and medium-sized watersheds according to the present invention;

[0052] Figure 3 This is a schematic diagram of the drive component structure of a water temperature prediction device for small and medium-sized watersheds according to the present invention;

[0053] Figure 4 This is a schematic diagram showing the connection between the connection component and the detection component of a water temperature prediction device for small and medium-sized watersheds according to the present invention;

[0054] Figure 5 This is a schematic diagram of the connection component structure of a water temperature prediction device for small and medium-sized watersheds according to the present invention;

[0055] Figure 6 This is a schematic diagram showing the connection between the bottom cover and the second drive shaft of a water temperature prediction device for small and medium-sized watersheds according to the present invention;

[0056] Figure 7 This is a schematic diagram showing the connection between the second drive shaft and the sealing frame of a water temperature prediction device for small and medium-sized watersheds according to the present invention.

[0057] Figure 8 This is a schematic diagram of the outer surface structure of the detection component of a water temperature prediction device for small and medium-sized watersheds according to the present invention;

[0058] Figure 9 This is a schematic diagram of the internal structure of the detection component of a water temperature prediction device for small and medium-sized watersheds according to the present invention;

[0059] Figure 10 This is a schematic diagram showing the separation of the receiving tube, detection tube, and sealing frame of a water temperature prediction device for small and medium-sized watersheds according to the present invention.

[0060] Figure 11This is a schematic diagram of the internal structure of the receiving tube of a water temperature prediction device for small and medium-sized watersheds according to the present invention.

[0061] In the diagram: 1. Mounting plate; 11. Control box; 2. Detection assembly; 21. Detection tube; 22. Insulation sleeve; 23. Expansion layer; 24. Discharge pipe; 25. Sealing frame; 26. Collection tube; 27. Bottom cover; 28. Friction sleeve; 29. ​​First notch; 210. Shaft collar; 211. Temperature probe; 212. Baffle; 213. Second notch; 214. Lifting rope; 3. Connecting assembly; 31. First telescopic frame; 32. Second telescopic frame; 33. First drive shaft; 34. Second drive shaft; 35. Insert shaft; 36. Locking bolt; 37. First connecting plate; 38. Protrusion; 39. Second connecting plate; 310. Gear; 311. Gear ring; 312. Connecting shaft; 313. Insert rod; 314. Sealing plate; 4. Drive assembly; 41. Electric push rod; 42. Connecting rod; 43. Motor; 44. Spring. Detailed Implementation

[0062] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0063] Please see Figures 1 to 11 The present invention provides a technical solution:

[0064] A water temperature prediction device for small and medium-sized watersheds includes a mounting plate 1, a detection component 2, a connection component 3, and a drive component 4;

[0065] The mounting plate 1 is used to be installed on the bank of the small and medium-sized river basin to be tested near the hydropower station, and the mounting plate 1 is arranged horizontally.

[0066] The detection component 2 is provided in two sets, and the two sets of the detection component 2 are suspended at different heights at the bottom of the mounting plate 1, respectively corresponding to the surface water level and the deep water level;

[0067] The connecting component 3 is used to connect the two sets of detection components 2, and the length of the connecting component 3 corresponds to the distance between the two sets of detection components 2;

[0068] The driving component 4 is used to connect to the top of the connecting component 3. By driving the connecting component 3, the two sets of detection components 2 are driven to perform water intake, water temperature detection and drainage simultaneously, thereby completing the sampling and detection of the temperature of the surface and deep water. Based on the sampling and detection results, the water temperature of small and medium watersheds is predicted.

[0069] Each detection assembly 2 includes a detection tube 21. A sealing frame 25 is rotatably sleeved on the top of the detection tube 21 via a bearing. A receiving tube 26 is rotatably mounted on the top of the sealing frame 25. A temperature probe 211 is housed inside the receiving tube 26. An extension layer 23 is fixed to the bottom of the detection tube 21. A sealing plate 314 is provided inside the extension layer 23. A discharge pipe 24 is fixedly connected to the bottom of the extension layer 23. A bottom cover 27 seals the bottom of the discharge pipe 24. The tops of the receiving tube 26 at the surface water level and the receiving tube 26 at the deep water level are fixed with the same suspension rope 214. The top of the suspension rope 214 is fixedly connected to the mounting plate 1.

[0070] The connecting assembly 3 includes a first telescopic frame 31, the top and bottom of which are connected to the temperature measuring probe 211 for the surface water level and the temperature measuring probe 211 for the deep water level, respectively; a second telescopic frame 32 is provided on one side of the first telescopic frame 31, the top and bottom of which are connected to the sealing plate 314 for the surface water level and the sealing plate 314 for the deep water level, respectively; a first drive shaft 33 and a second drive shaft 34 are provided on the outer side of the extended layer 23 for the surface water level and the outer side of the extended layer 23 for the deep water level, respectively; the first drive shaft 33 is connected to the bottom cover 27, and the second drive shaft 34 is connected to the sealing frame 25;

[0071] The drive assembly 4 includes two connecting rods 42. The top of the mounting plate 1 is provided with a connecting rod 42 at the position corresponding to the first telescopic frame 31 and the second telescopic frame 32. One end of one connecting rod 42 is rotatably connected to the top of the first telescopic frame 31 through a rotating shaft, and one end of the other connecting rod 42 is rotatably connected to the top of the second telescopic frame 32 through a rotating shaft.

[0072] The control box 11 is fixedly installed on the top of the mounting plate 1.

[0073] When using the device, select a small or medium-sized watershed near the hydropower station. Choose a suitable location in the watershed to be tested, install the mounting plate 1 on the bank, and insert the two sets of detection components 2 connected to the mounting plate 1 into the water. According to the water depth, the two sets of detection components 2 are arranged at the surface water level and the deep water level, respectively. The detection components 2 are connected to the mounting plate 1 through the suspension rope 214. The two sets of detection components 2 are driven simultaneously by the drive component 4 and the connecting component 3 to sample and detect the temperature of the surface and deep water, and obtain two sets of temperature data. Select multiple points in the same water area to obtain multiple sets of data, and change to a different water area to conduct water temperature detection again. The detected data is transmitted to the terminal through the communication module in the control box 11. This technology is an existing data transmission technology and will not be described in detail here.

[0074] In this embodiment, the drive assembly 4 further includes two electric push rods 41; two electric push rods 41 are symmetrically fixed at the rear ends of the two connecting rods 42 on the top of the mounting plate 1, and the extended end of one electric push rod 41 is rotatably connected to one connecting rod 42 through a rotating shaft; the tops of the first drive shaft 33 and the second drive shaft 34 are rotatably mounted on the bottom of the mounting plate 1, and two sets of motors 43 are fixed on the top of the mounting plate 1, and the two sets of motors 43 are respectively fixedly connected to the first drive shaft 33 and the second drive shaft 34;

[0075] Driven by an electric push rod 41, the corresponding first telescopic frame 31 and / or second telescopic frame 32 are moved vertically via a connecting rod 42. Driven by a motor 43, the corresponding first drive shaft 33 and / or second drive shaft 34 are rotated, thereby simultaneously activating two sets of detection components 2 to detect the water temperature at different locations. The first telescopic frame 31 and the second telescopic frame 32 are reset by a spring 44.

[0076] In this embodiment, the detection component 2 further includes a heat insulation sleeve 22. The heat insulation sleeve 22 is fitted onto the outer side of the detection tube 21. The detection tube 21 and the discharge tube 24 have the same radius as the sealing plate 314, and the inner diameter of the extension layer 23 is larger than that of the detection tube 21 and the discharge tube 24. A friction sleeve 28 is fixed on the inner wall of the receiving tube 26, and the outer surface of the temperature probe 211 slides in contact with the friction sleeve 28. A baffle 212 is provided at the bottom of the receiving tube 26, and the baffle 212 is fixedly connected to the bottom of the temperature probe 211. The sealing frame 2... A first notch 29 is provided on the surface of the 5, and a second notch 213 is provided on the top of the detection tube 21 corresponding to the first notch 29. The heat insulation sleeve 22 around the detection tube 21 can keep the water warm after it enters the detection tube 21, preventing the loss of water temperature and making the temperature measurement value more accurate. When the temperature probe 211 returns to the storage tube 26 after each detection, it will contact the friction sleeve 28. The friction sleeve 28 removes water and wipes the probe surface to avoid the accumulation of too many impurities and sludge on the surface of the temperature probe 211.

[0077] In this embodiment, the connecting assembly 3 further includes a connecting shaft 312. The connecting shaft 312 is fixed to one side of the top of the sealing plate 314, and the top of the connecting shaft 312 extends out of the sealing frame 25 and is fixedly connected to the second telescopic frame 32. A collar 210 is rotatably installed on the sealing frame 25 at the position where the connecting shaft 312 extends out, and the connecting shaft 312 is slidably and sealingly inserted into the collar 210. A rod 313 is slidably inserted into the top of the receiving tube 26, and the bottom of the rod 313 extends into the inside of the receiving tube 26 and into the top of the temperature probe 211. The insertion rod 313 is fixedly connected to the top of the first telescopic frame 31. Springs 44 are sleeved on the surfaces of the insertion rod 313 and the connecting shaft 312 at the top of the first telescopic frame 31 and the second telescopic frame 32, and the bottom of the springs 44 is fixedly connected to the mounting plate 1. A second connecting plate 39 is fixed on the surface of the second drive shaft 34 and is fixed on the outer wall of the storage tube 26. A first connecting plate 37 is fixed on the surface of the first drive shaft 33 and is fixedly connected to the bottom cover 27.

[0078] The first drive shaft 33 includes two sets of first drive shafts 33 coaxially arranged, and a plug shaft 35 is slidably inserted between the two sets of first drive shafts 33. The surface of the plug shaft 35 is symmetrically provided with protrusions 38, and the first drive shaft 33 is slidably engaged with the protrusions 38.

[0079] The second drive shaft 34 includes two sets of second drive shafts 34 coaxially arranged, and a plug shaft 35 is slidably inserted between the two sets of second drive shafts 34. The surface of the plug shaft 35 is symmetrically provided with protrusions 38, and the second drive shaft 34 is slidably engaged with the protrusions 38.

[0080] A gear ring 311 is fixed to the top of the sealing frame 25. A gear 310 is fixed to the surface of the second drive shaft 34 corresponding to the gear ring 311. The gear 310 meshes with the gear ring 311. In the initial stage, the first notch 29 of the sealing frame 25 is misaligned with the second notch 213 of the detection tube 21 to prevent water from entering the detection tube 21. At the same time, the baffle 212 seals the outlet end of the receiving tube 26, and the temperature probe 211 is housed in the receiving tube 26. The bottom cover 27 seals the discharge tube 24 to prevent water from entering the discharge tube 24. During detection, the second drive shaft 34 is first driven to rotate by the motor 43, which drives the gear 310 to mesh with the gear ring 311, rotating the sealing frame 25. The first notch 29 aligns with the second notch 213, and water flows into the detection tube 21 from the notch. Then, the sealing frame 25 is reset. At this time, the filling part inside the detection tube 21 is... As the water body is divided, the first telescopic frame 31 descends, driving the insertion rod 313 downwards, simultaneously moving the temperature probe 211 and the baffle 212 downwards. The temperature probe 211 is inserted into the water to measure the current water temperature. After the measurement is completed, the temperature probe 211 is retracted. Then, the second telescopic frame 32 drives the sealing plate 314 to descend via the connecting shaft 312. The sealing plate 314 enters the expansion layer 23. Because the size of the expansion layer 23 is larger than that of the discharge pipe 24 and the detection pipe 21, water will enter the interior of the discharge pipe 24. Then, the sealing plate 314 continues to descend and slides along the discharge pipe 24. The first drive shaft 33 rotates and opens the bottom cover 27. The water is pushed out of the discharge pipe 24 by the sealing plate 314. Then, the bottom cover 27 and the sealing plate 314 are reset. At this time, there will be no water residue inside the detection pipe 21 and the discharge pipe 24, which can avoid interfering with the water temperature detection of the next group.

[0081] In this embodiment, locking bolts 36 are inserted into the surfaces of the first telescopic frame 31, the second telescopic frame 32, the first drive shaft 33, and the second drive shaft 34. The locking bolts 36 are in contact with the extended ends of the first telescopic frame 31 and the second telescopic frame 32 and the insertion shaft 35. After the detection components 2 are fixed to different positions at the bottom of the mounting plate 1 by the suspension rope 214, the first telescopic frame 31 and the second telescopic frame 32 are adjusted to the corresponding lengths. The distance between the two sets of first drive shafts 33 and the two sets of second drive shafts 34 is connected by the insertion shaft 35 and corresponds to the distance between the two sets of detection components 2. The lengths of each part of the connecting components 3 are locked by the locking bolts 36, so that when sampling, the two sets of detection components 2 can simultaneously complete the actions of water collection, detection, and drainage, improving detection efficiency and maintaining detection synchronicity. Because the first drive shaft 33 and the second drive shaft 34 are slidably engaged with the protrusion 38 on the insertion shaft 35, after adjusting the length, the drive shafts can maintain the effect of synchronous rotation in the same straight line.

[0082] When using the device, select a small to medium-sized river basin near the hydropower station. Choose a suitable location within the basin to be tested, install the mounting plate 1 on the bank, and insert the two sets of detection components 2 connected to the mounting plate 1 into the water. Based on the water depth, arrange the two sets of detection components 2 at the surface and deep water levels respectively. The detection components 2 are connected to the mounting plate 1 via suspension ropes 214. Adjust the first telescopic frame 31 and the second telescopic frame 32 to their corresponding lengths. The distance between the two sets of first drive shafts 33 and the two sets of second drive shafts 34 is connected by a connecting shaft 35, corresponding to the distance between the two sets of detection components 2. Lock the lengths of each part of the connecting components 3 using locking bolts 36, ensuring that during sampling, the two sets of detection components 2 can simultaneously complete water intake, testing, and drainage. The operation improves detection efficiency and maintains detection synchronization. Because the first drive shaft 33 and the second drive shaft 34 are slidably engaged with the protrusion 38 on the insert shaft 35, adjusting their lengths allows them to maintain synchronous rotation of the drive shafts in a straight line. Initially, the first notch 29 of the sealing frame 25 is misaligned with the second notch 213 of the detection tube 21 to prevent water from entering the detection tube 21. Simultaneously, the baffle 212 seals the outlet end of the receiving tube 26, and the temperature probe 211 is housed in the receiving tube 26. The bottom cover 27 seals the discharge tube 24 to prevent water from entering the discharge tube 24. During detection, the electric push rod 41 drives the connecting rod 42 to move the first telescopic frame 31 and the second telescopic frame 32 vertically. The motor 43 then drives the opening... The rotation of the first drive shaft 33 and the second drive shaft 34 can simultaneously activate the two sets of detection components 2 to detect the water temperature at different locations. The rotation of the second drive shaft 34 drives the gear 310 to mesh with the gear ring 311, rotating the sealing frame 25. The first notch 29 aligns with the second notch 213, and water flows into the detection tube 21 through the notch. Then, the sealing frame 25 is reset, and the detection tube 21 is partially filled with water. The first telescopic frame 31 descends, driving the insertion rod 313 to move downward, moving the temperature probe 211 and the baffle 212 downward simultaneously. The temperature probe 211 is inserted into the water to measure the current water temperature. After the measurement is completed, the temperature probe 211 is retracted. Then, the second telescopic frame 32 drives the sealing plate 314 downward through the connecting shaft 312. As the sealing plate 314 descends, it enters the expansion layer 23. Because the expansion layer 23 is larger than the discharge pipe 24 and the detection pipe 21, water will enter the discharge pipe 24. Then, the sealing plate 314 continues to descend and slides along the discharge pipe 24. The first drive shaft 33 rotates and opens the bottom cover 27. The water is pushed out of the discharge pipe 24 by the sealing plate 314. Then, the bottom cover 27 and the sealing plate 314 are reset. At this time, there will be no water residue in the detection pipe 21 and the discharge pipe 24, which can avoid interfering with the next set of water temperature monitoring. Two sets of temperature data are obtained. Multiple sets of data are obtained by selecting multiple points in the same water area and changing to different water areas to perform water temperature monitoring again. The detected data is transmitted to the terminal through the communication module in the control box 11.

[0083] This invention also provides a method for predicting water temperature in small and medium-sized watersheds, the prediction method comprising the following steps:

[0084] Step S1, Installation and Arrangement: Select a small or medium-sized watershed near the hydropower station, select a suitable location in the small or medium-sized watershed to be tested, install the mounting plate 1 on the bank, insert the two sets of detection components 2 connected to the mounting plate 1 into the water, and arrange the two sets of detection components 2 at the surface water level and the deep water level respectively according to the water depth.

[0085] Step S2, Connection and Installation: Connect the two sets of detection components 2 through the connecting component 3. The length of the connecting component 3 corresponds to the distance between the two sets of detection components 2. The top of the connecting component 3 is connected to the drive component 4 on the mounting plate 1.

[0086] Step S3, water temperature monitoring: The two sets of detection components 2 are driven simultaneously by the drive component 4 and the connection component 3 to sample and detect the temperature of the surface and deep water, and two sets of temperature data are obtained. Multiple sets of temperature data are obtained by selecting multiple points in the same water area and then changing to a different water area to perform water temperature monitoring again.

[0087] Step S3 is as follows:

[0088] In step S31, initially, each detection component 2 is in the initial state, that is: the first notch 29 of the sealing frame 25 is misaligned with the second notch 213 of the detection tube 21 to prevent water from entering the detection tube 21; at the same time, the baffle 212 seals the outlet end of the receiving tube 26, the temperature probe 211 is stored in the receiving tube 26, and the bottom cover 27 seals the discharge tube 24 to prevent water from entering the discharge tube 24.

[0089] Step S32: When each set of detection components 2 is in the initial state, insert the two sets of detection components 2 into the water and arrange the two sets of detection components 2 at the surface water level and the deep water level, respectively, according to the water depth.

[0090] Step S33: Simultaneously sample the two sets of detection components 2.

[0091] The second drive shaft 34 is driven to rotate by the motor 43. When the second drive shaft 34 rotates, it also drives the gears 310 of the two sets of detection components 2 to rotate. Since the gears 310 mesh with the gear ring 311, the sealing frames 25 of the two sets of detection components 2 are rotated. The first notch 29 corresponds to the second notch 213. Water flows into the inside of the detection tube 21 from the notch. Then the sealing frame 25 is reset. At this time, the inside of the detection tube 21 of the two sets of detection components 2 is filled with some water.

[0092] Step S34: Simultaneously measure the temperature of both sets of detection components 2.

[0093] The first telescopic frame 31 is driven to descend by the drive component 4, which drives the insertion rod 313 to move downward, and moves the surface water level and deep water level temperature probes 211 and baffles 212 downward synchronously. The surface water level and deep water level temperature probes 211 are inserted into the water in the corresponding detection tubes 21 to measure the current water temperature.

[0094] Step S35: Simultaneously drain water from both sets of detection components 2.

[0095] After the measurement is completed, the temperature probes 211 for the surface water level and deep water level are retracted. Then, the second telescopic frame 32 drives the sealing plates 314 for the surface water level and deep water level to descend via the connecting shaft 312. The sealing plates 314 enter the expansion layer 23. Because the size of the expansion layer 23 is larger than that of the discharge pipe 24 and the detection pipe 21, water will enter the interior of the discharge pipe 24. Then, the sealing plates 314 continue to descend and slide along the discharge pipe 24. The first drive shaft 33 rotates and opens the bottom cover 27 for the surface water level and deep water level. The water is pushed out of the discharge pipe 24 by the sealing plates 314 for the surface water level and deep water level. Then, the bottom cover 27 and the sealing plates 314 are reset. At this time, there will be no water residue inside the detection pipe 21 and the discharge pipe 24 to avoid interfering with the next set of water temperature detections.

[0096] Step S4, predict water temperature: Classify the monitored small and medium-sized watersheds according to the size, length, distance from the hydropower station and water temperature data to obtain a database of different water areas. The database includes water area information and surrounding environment, as well as the rate of water temperature change, the temperature difference between the surface and deep water, and the predicted impact of the hydropower station on the water temperature of the surrounding water area. Compare the data with the monitoring data.

[0097] Step S5, Result Comparison: After comparing the prediction results with the monitoring data, the impact of building a hydropower station on the surrounding water area and water temperature is determined, as well as the prediction analysis of water temperature changes in similar water areas.

[0098] The water temperature prediction device and method for small and medium-sized watersheds provided by this invention have the following advantages:

[0099] 1. In this invention, the first and second telescopic frames are adjusted to their corresponding lengths. The distance between the two sets of first and second drive shafts is connected by a plug shaft, which also corresponds to the distance between the two sets of detection components. The lengths of each part of the connecting components are locked by locking bolts, thereby ensuring that the two sets of detection components can synchronously complete the actions of water collection, detection, and drainage during sampling, improving detection efficiency and maintaining detection synchronicity. Because the first and second drive shafts are slidably engaged with the protrusions on the plug shaft, after length adjustment, the drive shafts can maintain synchronous rotation on the same straight line.

[0100] 2. The present invention prevents water from entering the detection tube by misaligning the first notch of the sealing frame with the second notch of the detection tube. At the same time, the baffle seals the outlet end of the receiving tube, the temperature probe is stored in the receiving tube, and the bottom cover seals the discharge tube to prevent water from entering the discharge tube.

[0101] 3. Because the size of the extended layer is larger than that of the discharge pipe and the detection pipe, water will enter the discharge pipe. Then the sealing plate continues to descend and slides along the discharge pipe. The first drive shaft rotates and opens the bottom cover. The water is pushed out of the discharge pipe by the sealing plate. Then the bottom cover and the sealing plate are reset. At this time, there will be no water residue in the detection pipe and the discharge pipe, which can avoid interfering with the water temperature monitoring of the next set.

[0102] 4. The present invention uses an insulating sleeve around the detection tube to keep the water warm after it enters the detection tube, preventing water temperature loss and making the temperature measurement more accurate. When the temperature probe returns to the storage tube after each detection, it will come into contact with the friction sleeve, which removes moisture and wipes the probe surface, preventing the accumulation of too many impurities and sludge on the temperature probe surface.

[0103] 5. This invention uses an electric push rod to drive a connecting rod that moves the first and second telescopic frames vertically. The first and second drive shafts are rotated by a motor, allowing two sets of detection components to be activated simultaneously to detect the water temperature at different locations. The first and second telescopic frames can be reset by springs.

[0104] 6. Compared with the prior art, the present invention can simultaneously monitor the surface and deep water temperature of a water body through two sets of detection components and connecting components. During the monitoring process, water samples are taken. The sampling and monitoring processes are carried out independently to ensure that the monitored water temperature is not affected by the water flow. At the same time, after the detection is completed, the temperature probe can be protected and the water can be sent out to maintain the detection accuracy.

[0105] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0106] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water temperature prediction device for small and medium-sized river basins, characterized in that, It includes a mounting plate (1), a detection component (2), a connection component (3), and a drive component (4); The mounting plate (1) is used to be installed on the bank of the small and medium-sized river basin to be tested near the hydropower station, and the mounting plate (1) is arranged horizontally. The detection component (2) is provided in two sets, and the two sets of detection components (2) are suspended at different heights at the bottom of the mounting plate (1), respectively corresponding to the surface water level and the deep water level; The connecting component (3) is used to connect the two sets of detection components (2), and the length of the connecting component (3) corresponds to the distance between the two sets of detection components (2); The driving component (4) is used to connect to the top of the connecting component (3). By driving the connecting component (3) to move, the two sets of detection components (2) are driven to perform water sampling, water temperature detection and drainage simultaneously, thereby completing the sampling and detection of the temperature of the surface and deep water. Based on the sampling and testing results, water temperature prediction is carried out in small and medium-sized watersheds; Each detection assembly (2) includes a detection tube (21), the top of which is rotatably fitted with a sealing frame (25) via a bearing, and a receiving tube (26) is rotatably mounted on the top of the sealing frame (25), the inside of which a temperature probe (211) is stored; an extension layer (23) is fixed to the bottom of the detection tube (21), a sealing plate (314) is provided inside the extension layer (23), and a discharge tube (24) is fixedly connected to the bottom of the extension layer (23), the bottom of which is sealed and covered with a bottom cover (27); The top of the receiving pipe (26) at the surface water level and the receiving pipe (26) at the deep water level are fixed with the same hanging rope (214), and the top of the hanging rope (214) is fixedly connected to the mounting plate (1). The connecting assembly (3) includes a first telescopic frame (31), the top and bottom of which are connected to the temperature measuring probe (211) of the surface water level and the temperature measuring probe (211) of the deep water level, respectively; a second telescopic frame (32) is provided on one side of the first telescopic frame (31), the top and bottom of which are connected to the sealing plate (314) of the surface water level and the sealing plate (314) of the deep water level, respectively; a first drive shaft (33) and a second drive shaft (34) are provided on the outer side of the extended layer (23) of the surface water level and the outer side of the extended layer (23) of the deep water level, respectively; the first drive shaft (33) is connected to the bottom cover (27), and the second drive shaft (34) is connected to the sealing frame (25); The drive assembly (4) includes two connecting rods (42). The top of the mounting plate (1) is provided with a connecting rod (42) at the position corresponding to the first telescopic frame (31) and the second telescopic frame (32). One end of one connecting rod (42) is rotatably connected to the top of the first telescopic frame (31) through a rotating shaft, and one end of the other connecting rod (42) is rotatably connected to the top of the second telescopic frame (32) through a rotating shaft. A control box (11) is fixedly installed on the top of the mounting plate (1); Each of the detection components (2) further includes an insulation sleeve (22) and a friction sleeve (28); The outer side of the detection tube (21) is fitted with a heat insulation sleeve (22). The detection tube (21) and the discharge tube (24) have the same radius as the sealing plate (314), and the inner diameter of the extension layer (23) is larger than that of the detection tube (21) and the discharge tube (24). A friction sleeve (28) is fixed on the inner wall of the receiving tube (26), and the outer surface of the temperature probe (211) slides in contact with the friction sleeve (28). A baffle (212) is provided at the bottom of the receiving tube (26), and the baffle (212) is fixedly connected to the bottom of the temperature probe (211). A first notch (29) is opened on the surface of the sealing frame (25), and a second notch (213) is opened at the top of the detection tube (21) corresponding to the position of the first notch (29). The first drive shaft (33) includes two sets of first drive shafts (33) arranged coaxially, and a plug shaft (35) is slidably inserted between the two sets of first drive shafts (33). The surface of the plug shaft (35) is symmetrically provided with protrusions (38), and the first drive shaft (33) is slidably engaged with the protrusions (38). The second drive shaft (34) includes two sets of second drive shafts (34) arranged coaxially, and a plug shaft (35) is slidably inserted between the two sets of second drive shafts (34). The surface of the plug shaft (35) is symmetrically provided with protrusions (38), and the second drive shaft (34) is slidably engaged with the protrusions (38). A toothed ring (311) is fixed on the top of the sealing frame (25), and a gear (310) is fixed on the surface of the second drive shaft (34) corresponding to the toothed ring (311). The gear (310) meshes with the toothed ring (311). Locking bolts (36) are inserted into the surfaces of the first telescopic frame (31), the second telescopic frame (32), the first drive shaft (33), and the second drive shaft (34), and the locking bolts (36) are in contact with the extended ends of the first telescopic frame (31) and the second telescopic frame (32) and the inserted shaft (35).

2. The water temperature prediction device for small and medium-sized river basins according to claim 1, characterized in that, The drive assembly (4) also includes two electric push rods (41); the top of the mounting plate (1) is symmetrically fixed with two electric push rods (41) at the rear end of the two connecting rods (42), and the extended end of one electric push rod (41) is rotatably connected to one connecting rod (42) through a rotating shaft; the top of the first drive shaft (33) and the second drive shaft (34) are rotatably mounted on the bottom of the mounting plate (1), and two sets of motors (43) are fixed on the top of the mounting plate (1), and the two sets of motors (43) are fixedly connected to the first drive shaft (33) and the second drive shaft (34) respectively; Driven by an electric push rod (41), the corresponding first telescopic frame (31) and / or second telescopic frame (32) are moved vertically via a connecting rod (42). Driven by a motor (43), the corresponding first drive shaft (33) and / or second drive shaft (34) are turned on, thereby simultaneously turning on two sets of detection components (2) to detect the water temperature at different positions. The first telescopic frame (31) and the second telescopic frame (32) are reset by spring (44).

3. The water temperature prediction device for small and medium-sized river basins according to claim 1, characterized in that, The connecting assembly (3) also includes a connecting shaft (312). The connecting shaft (312) is fixed on one side of the top of the sealing plate (314), and the top of the connecting shaft (312) passes through the sealing frame (25) and is fixedly connected to the second telescopic frame (32). The sealing frame (25) is rotatably installed with a collar (210) corresponding to the position where the connecting shaft (312) passes through, and the connecting shaft (312) is slidably and sealingly inserted into the collar (210).

4. The water temperature prediction device for small and medium-sized river basins according to claim 3, characterized in that, The top of the storage tube (26) is slidably inserted with a rod (313). The bottom of the rod (313) is inserted into the storage tube (26) and fixedly connected to the top of the temperature probe (211). The top of the rod (313) is fixedly connected to the first telescopic frame (31). Springs (44) are sleeved on the surface of the rod (313) at the top of the first telescopic frame (31) and the connecting shaft (312) at the top of the second telescopic frame (32). The bottom of the springs (44) is fixedly connected to the mounting plate (1).

5. The water temperature prediction device for small and medium-sized river basins according to claim 1, characterized in that, A second connecting plate (39) is fixed on the surface of the second drive shaft (34), and the second connecting plate (39) is fixed on the outer wall of the storage tube (26). A first connecting plate (37) is fixed on the surface of the first drive shaft (33), and the first connecting plate (37) is fixedly connected to the bottom cover (27).

6. The method for predicting water temperature in small and medium-sized watersheds using the water temperature prediction device of claim 1, characterized in that, The prediction method includes the following steps: Step S1, Installation and Arrangement: Select a small or medium-sized watershed near the hydropower station, select a suitable location in the small or medium-sized watershed to be tested, install the installation plate (1) on the bank, insert the two sets of detection components (2) connected to the installation plate (1) into the water, and arrange the two sets of detection components (2) at the surface water level and the deep water level respectively according to the water depth. Step S2, Connection and Installation: Connect the two sets of detection components (2) through the connecting component (3). The length of the connecting component (3) corresponds to the distance between the two sets of detection components (2). The top of the connecting component (3) is connected to the drive component (4) on the mounting plate (1). Step S3, water temperature monitoring: The two sets of detection components (2) are driven simultaneously by the drive component (4) and the connection component (3) to sample and detect the temperature of the surface and deep water, and two sets of temperature data are obtained. Multiple sets of temperature data are obtained by selecting multiple points in the same water area and then changing to different water areas to perform water temperature monitoring again. Step S4, predict water temperature: Classify the monitored small and medium-sized watersheds according to the size, length, distance from the hydropower station and water temperature data to obtain a database of different water areas. The database includes water area information and surrounding environment, as well as the rate of water temperature change, the temperature difference between the surface and deep water, and the predicted impact of the hydropower station on the water temperature of the surrounding water area. Compare the data with the monitoring data. Step S5, Result Comparison: After comparing the prediction results with the monitoring data, the impact of building a hydropower station on the surrounding water area and water temperature is determined, as well as the prediction analysis of water temperature changes in similar water areas.

7. The method for predicting water temperature in small and medium-sized watersheds using the water temperature prediction device of claim 6, characterized in that, Step S3 is as follows: Step S31: Initially, each detection component (2) is in its initial state, that is: the first notch (29) of the sealing frame (25) is misaligned with the second notch (213) of the detection tube (21) to prevent water from entering the detection tube (21). At the same time, the baffle (212) seals the outlet end of the receiving tube (26), the temperature probe (211) is stored in the receiving tube (26), and the bottom cover (27) seals the discharge tube (24) to prevent water from entering the discharge tube (24). Step S32: When each set of detection components (2) is in the initial state, insert the two sets of detection components (2) into the water and arrange the two sets of detection components (2) at the surface water level and the deep water level respectively according to the water depth. Step S33: Simultaneously sample the two sets of detection components (2): The second drive shaft (34) is driven to rotate by the motor (43). When the second drive shaft (34) rotates, it also drives the gears (310) of the two sets of detection components (2) to rotate. Since the gears (310) mesh with the gear ring (311), the sealing frames (25) of the two sets of detection components (2) are rotated. The first notch (29) corresponds to the second notch (213). Water flows into the inside of the detection tube (21) from the notch. Then the sealing frame (25) is reset. At this time, the inside of the detection tube (21) of the two sets of detection components (2) is filled with some water. Step S34, make both sets of detection components (2) measure the temperature simultaneously: Drive the first telescopic frame (31) to descend by the drive component (4), which in turn moves the insertion rod (313) downward, and moves the surface water level and deep water level temperature probes (211) and baffles (212) downward synchronously. The surface water level and deep water level temperature probes (211) are inserted into the water in the corresponding detection tubes (21) to measure the current water temperature. Step S35, drain water from both sets of detection components (2) simultaneously: After the measurement is completed, the temperature probes (211) for surface water level and deep water level are retracted. Then, the second telescopic frame (32) drives the sealing plates (314) for surface water level and deep water level to descend through the connecting shaft (312). The sealing plates (314) enter the expansion layer (23). Because the size of the expansion layer (23) is larger than that of the discharge pipe (24) and the detection pipe (21), water will enter the interior of the discharge pipe (24). Then, the sealing plates (314) continue to descend and slide along the discharge pipe (24). The first drive shaft (33) rotates and opens the bottom cover (27) for surface water level and deep water level. The water is pushed out of the discharge pipe (24) by the sealing plates (314) for surface water level and deep water level. Then, the bottom cover (27) and the sealing plates (314) are reset. At this time, there will be no water residue inside the detection pipe (21) and the discharge pipe (24), so as to avoid interfering with the water temperature detection of the next group.

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