Device and method for predicting water temperature of medium and small drainage basins

Abstract

The invention provides a water temperature prediction device and method for small and medium-sized drainage basins, and relates to the technical field of water temperature monitoring. A detection assembly comprises a detection pipe, the top of the detection pipe is rotationally sleeved with a sealing frame through a bearing, a storage pipe is rotationally installed at the top of the sealing frame, and a temperature measurement probe is stored in the storage pipe; an expansion layer is fixed to the bottom of the detection pipe, a sealing plate is arranged in the expansion layer, a discharge pipe is fixedly connected to the bottom of the expansion layer, the bottom of the discharge pipe is covered with a bottom cover in a sealed mode, and the same lifting rope is fixed to the tops of the two storage pipes. The water temperature of the surface layer and the deep layer of a water area can be monitored at the same time through the two detection assemblies and the connecting assembly, the water body is sampled in the monitoring process, the sampling process and the monitoring process are independently carried out, it is guaranteed that the monitored water temperature is not affected by water flow, meanwhile, after detection is completed, the temperature measuring probe can be protected, and the water body is sent out; therefore, the detection precision 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 of 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 understand the impact of the establishment of a 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 has the following problems: on the one hand, the surface of the temperature measuring device 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 may carry away part of the heat, causing the temperature around the sensor to change, thereby affecting the accuracy of the sensor readings. 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. 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] Further, the driving assembly 4 further comprises two electric push rods 41; two electric push rods 41 are symmetrically fixed on the top of the mounting plate 1 at the rear ends of two connecting rods 42, and the elongated end of one electric push rod 41 is rotatably connected with one connecting rod 42 through a rotating shaft; the top of the first driving shaft 33 and the top of the second driving shaft 34 are both rotatably installed on the bottom of the mounting plate 1, and two groups of motors 43 are fixed on the top of the mounting plate 1, and the two groups of motors 43 are respectively fixedly connected with the first driving shaft 33 and the second driving shaft 34;

[0017] Through the pushing of one electric push rod 41, the corresponding first telescopic frame 31 and / or second telescopic frame 32 are vertically moved through the connecting rod 42, and the rotation of the corresponding first driving shaft 33 and / or second driving shaft 34 is started through the driving of one motor 43, so that the two groups of detection assemblies 2 are simultaneously started to detect the water temperature at different positions, and the first telescopic frame 31 and the second telescopic frame 32 are reset through the spring 44.

[0018] Further, each group of the detection assembly 2 further comprises a heat preservation sleeve 22 and a friction sleeve 28;

[0019] The detection tube 21 is sleeved with the heat preservation sleeve 22 on the outside, the detection tube 21 and the discharge tube 24 have the same radius as the sealing plate 314, and the inner diameter of the expansion layer 23 is greater than that of the detection tube 21 and the discharge tube 24;

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

[0021] Further, the connecting assembly 3 further comprises a connecting shaft 312, one side of the top of the sealing plate 314 is fixedly provided with the connecting shaft 312, the top of the connecting shaft 312 penetrates through the sealing frame 25 and is fixedly connected with the second telescopic frame 32, the sealing frame 25 is rotatably installed with a shaft ring 210 corresponding to the position where the connecting shaft 312 penetrates out, and the connecting shaft 312 is slidingly and sealingly inserted into the shaft ring 210.

[0022] Further, the top of the receiving tube 26 is slidingly inserted with a plug rod 313, the bottom of the plug rod 313 penetrates into the inside of the receiving tube 26 and is fixedly connected with the top of the temperature measuring probe 211, the top of the plug rod 313 is fixedly connected with the first telescopic frame 31, the surfaces of the plug 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 are both sleeved with springs 44, and the bottoms of the springs 44 are fixedly connected with the mounting plate 1.

[0023] Further, the surface of the second driving shaft 34 is fixed with a second connecting plate 39, and the second connecting plate 39 is fixed on the outer wall of the receiving tube 26, the surface of the first driving shaft 33 is fixed with a first connecting plate 37, and the first connecting plate 37 is fixedly connected with the bottom cover 27.

[0024] Further, the first driving shaft 33 includes two groups of coaxially arranged first driving shafts 33, and a plug shaft 35 is slidingly inserted between the two groups of first driving shafts 33, the surface of the plug shaft 35 is symmetrically provided with a convex strip 38, and the first driving shaft 33 is slidingly connected with the convex strip 38.

[0025] The second driving shaft 34 includes two groups of coaxially arranged second driving shafts 34, and a plug shaft 35 is slidingly inserted between the two groups of second driving shafts 34, the surface of the plug shaft 35 is symmetrically provided with a convex strip 38, and the second driving shaft 34 is slidingly connected with the convex strip 38.

[0026] The top of the sealing frame 25 is fixed with a tooth ring 311, the surface of the second driving shaft 34 corresponding to the tooth ring 311 is fixed with a gear 310, and the gear 310 is meshingly connected with the tooth ring 311.

[0027] The surface of the first telescopic frame 31, the second telescopic frame 32, the first driving shaft 33 and the second driving shaft 34 is inserted with a locking bolt 36, and the locking bolt 36 is in extrusion contact with the elongated end of the first telescopic frame 31 and the second telescopic frame 32 and the plug shaft 35.

[0028] The application also provides a small and medium-sized watershed water temperature prediction method realized by the small and medium-sized watershed water temperature prediction device.

[0029] Step S1, installation arrangement: selecting a small and medium-sized watershed near a hydropower station, selecting a suitable position in the small and medium-sized watershed to be detected, installing a mounting plate 1 on the bank, inserting two groups of detection assemblies 2 connected with the mounting plate 1 into water, and arranging the two groups of detection assemblies 2 at the surface water level and the deep water level according to the water depth;

[0030] Step S2, connection installation: connecting the two groups of detection assemblies 2 through a connecting assembly 3, the length of the connecting assembly 3 corresponds to the distance between the two groups of detection assemblies 2, and the top of the connecting assembly 3 is connected with a driving assembly 4 on the mounting plate 1;

[0031] Step S3, water temperature monitoring: driving the two groups of detection assemblies 2 to sample and detect the temperature of the surface water and the deep water through the driving assembly 4 and the connecting assembly 3, obtaining two groups of temperature data, selecting multiple groups of temperature data obtained by multi-point detection in the same water area, and replacing different water areas to perform water temperature monitoring again;

[0032] Step S4, predicting water temperature: according to the size, length, distance from the hydropower station and water temperature data of the monitored small and medium-sized river basins, the database of different water areas is obtained, which includes water area information and surrounding environment, water temperature change speed, water temperature difference between surface and deep water, and the influence of the establishment of the hydropower station on the surrounding water area and water temperature is predicted. The predicted results are compared with the monitoring data to predict the influence of the establishment of the hydropower station on the surrounding water area and water temperature and the change of the water temperature of the similar water area.

[0033] Step S5, result comparison: after comparing the prediction results with the monitoring data, the influence of the establishment of the hydropower station on the surrounding water area and water temperature is obtained, and the prediction analysis of the change of the water temperature of the similar water area is obtained.

[0034] Further, step S3 is specifically:

[0035] Step S31, initially, each detection assembly 2 is in an initial state, that is, the first gap 29 of the sealing frame 25 is misaligned with the second gap 213 of the detection pipe 21, preventing water from entering the inside of the detection pipe 21, and the baffle 212 seals the outlet end of the storage pipe 26, the temperature probe 211 is stored in the storage pipe 26, and the bottom cover 27 seals the discharge pipe 24, preventing water from entering the inside of the discharge pipe 24;

[0036] Step S32, when each detection assembly 2 is in the initial state, insert the two detection assemblies 2 into the water, and according to the water depth, arrange the two detection assemblies 2 at the surface water level and the deep water level respectively;

[0037] Step S33, sample the two detection assemblies 2 at the same time:

[0038] The second drive shaft 34 is driven to rotate by the motor 43, and when the second drive shaft 34 rotates, the gear 310 of the two detection assemblies 2 is rotated, and since the gear 310 is engaged with the tooth ring 311, the sealing frame 25 of the two detection assemblies 2 is rotated, and the first gap 29 corresponds to the second gap 213, and the water flows into the inside of the detection pipe 21 from the gap, and then the sealing frame 25 is reset, and at this time, the inside of the detection pipe 21 of the two detection assemblies 2 is filled with part of the water body;

[0039] Step S34, measure the temperature of the two detection assemblies 2 at the same time:

[0040] The first telescopic frame 31 is driven to descend by the driving assembly 4, and the insertion rod 313 is moved downward, and the temperature probes 211 and baffles 212 at the surface water level and deep water level are synchronously moved downward, and the temperature probes 211 at the surface water level and deep water level are inserted into the water body in the corresponding detection pipe 21 to measure the current water temperature;

[0041] Step S35, drain the water of the two detection assemblies 2 at the same time:

[0042] After the measurement is completed, the surface water level and deep water level temperature measuring probe 211 is retracted, and then the second telescopic frame 32 drives the surface water level and deep water level sealing plate 314 to descend through the connecting shaft 312, and the sealing plate 314 enters the expansion layer 23, because the expansion layer 23 is larger in size than the discharge pipe 24 and the detection pipe 21, the water body enters the inside of the discharge pipe 24, and then the sealing plate 314 continues to descend and slides along the discharge pipe 24, the first drive shaft 33 rotates and opens the surface water level and deep water level bottom cover 27, and the water body is pushed out of the discharge pipe 24 by the pushing of the surface water level and deep water level sealing plate 314, and then the bottom cover 27 and the sealing plate 314 are reset, at this time, there is no residual water body in the inside of the detection pipe 21 and the discharge pipe 24, avoiding interference with the next group of water temperature detection.

[0043] The small and medium-sized river basin water temperature prediction device and method has the following advantages:

[0044] 1. The first telescopic frame and the second telescopic frame are adjusted to the corresponding length, the distance between the two groups of first drive shafts and the two groups of second drive shafts is connected through the shaft, and the distance is also corresponding to the distance of the two groups of detection assemblies, the length of each part of the connecting assembly is locked by the locking bolt, so that when sampling, the two groups of detection assemblies can complete the actions of water taking, detection and water discharging synchronously, the detection efficiency is improved, the synchronization of detection is maintained, and the first drive shaft and the second drive shaft can keep synchronous rotation of the drive shafts on the same straight line due to the sliding clamping of the convex strips on the shaft.

[0045] 2. The first gap of the sealing frame is misaligned with the second gap of the detection pipe, water body is prevented from entering the inside of the detection pipe, the baffle seals the outlet end of the storage pipe, the temperature measuring probe is stored in the storage pipe, and the bottom cover seals the discharge pipe, so that water body is prevented from entering the inside of the discharge pipe.

[0046] 3. Because the expansion layer is larger in size than the discharge pipe and the detection pipe, water body enters the inside of 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 body is pushed out of the discharge pipe by the pushing of the sealing plate, and then the bottom cover and the sealing plate are reset, at this time, there is no residual water body in the inside of the detection pipe and the discharge pipe, so that interference with the next group of water temperature monitoring can be avoided.

[0047] 4. The heat preservation sleeve around the detection pipe can preserve the water after the water enters the inside of the detection pipe, prevent the loss of water temperature, make the temperature measuring value more accurate, and when the temperature measuring probe returns to the inside of the storage pipe after each detection, the temperature measuring probe is in contact with the friction sleeve, water is removed through the friction sleeve, and the surface of the probe is wiped, so that too much impurities and silt are prevented from accumulating on the surface of the temperature measuring probe.

[0048] 5. The electric push rod pushes the connecting rod to drive the first telescopic frame and the second telescopic frame to move vertically, the rotation of the first drive shaft and the second drive shaft is driven by the motor, the two groups of detection assemblies can be opened synchronously to detect the water temperature at different positions, and the first telescopic frame and the second telescopic frame can be reset by the spring.

[0049] 6. Compared with the prior art, the two groups of detection assemblies and the connecting assembly can monitor the water temperature of the surface layer and the deep layer of the water area at the same time, the water body is sampled during the monitoring process, the sampling and the monitoring process are independent, the monitoring water temperature is not affected by the water flow, the temperature probe can be protected after detection is completed, and the water body is discharged to maintain the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 It is a method step diagram of the small and medium-sized river basin water temperature prediction method of the application;

[0051] Figure 2 It is a whole structure schematic diagram of the small and medium-sized river basin water temperature prediction device of the application;

[0052] Figure 3 It is a driving assembly structure schematic diagram of the small and medium-sized river basin water temperature prediction device of the application;

[0053] Figure 4 It is a connecting assembly and detection assembly connection schematic diagram of the small and medium-sized river basin water temperature prediction device of the application;

[0054] Figure 5 It is a connecting assembly structure schematic diagram of the small and medium-sized river basin water temperature prediction device of the application;

[0055] Figure 6 It is a bottom cover and second drive shaft connection schematic diagram of the small and medium-sized river basin water temperature prediction device of the application;

[0056] Figure 7 It is a second drive shaft and sealing frame connection schematic diagram of the small and medium-sized river basin water temperature prediction device of the application;

[0057] Figure 8 It is a detection assembly outer surface structure schematic diagram of the small and medium-sized river basin water temperature prediction device of the application;

[0058] Figure 9 It is a detection assembly internal structure schematic diagram of the small and medium-sized river basin water temperature prediction device of the application;

[0059] Figure 10 It is a storage tube, detection tube and sealing frame separation schematic diagram of the small and medium-sized river basin water temperature prediction device of the application;

[0060] Figure 11It is the inside structure schematic view of the storage tube of the small and medium-sized river basin water temperature prediction device.

[0061] In the figure: 1, mounting plate; 11, control box; 2, detection assembly; 21, detection tube; 22, heat preservation sleeve; 23, expansion layer; 24, discharge pipe; 25, sealing frame; 26, storage tube; 27, bottom cover; 28, friction sleeve; 29, first notch; 210, shaft ring; 211, temperature measuring probe; 212, baffle; 213, second notch; 214, hanging rope; 3, connecting assembly; 31, first telescopic frame; 32, second telescopic frame; 33, first drive shaft; 34, second drive shaft; 35, insertion shaft; 36, locking bolt; 37, first connecting plate; 38, convex strip; 39, second connecting plate; 310, gear; 311, gear ring; 312, connecting shaft; 313, insertion rod; 314, sealing plate; 4, drive assembly; 41, electric push rod; 42, connecting rod; 43, motor; 44, spring. DETAILED DESCRIPTION

[0062] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0063] Please refer to Figures 1 to 11 The present application provides a technical solution:

[0064] A small and medium-sized river basin water temperature prediction device, comprising a mounting plate 1, a detection assembly 2, a connecting assembly 3 and a drive assembly 4;

[0065] The mounting plate 1 is used for mounting 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;

[0066] The detection assembly 2 is provided in two groups, and the two groups of detection assemblies 2 are suspended at different height positions at the bottom of the mounting plate 1, respectively corresponding to the surface water level and the deep water level;

[0067] 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;

[0068] The drive assembly 4 is used for connecting 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 temperature; based on the sampling detection result, the small and medium-sized river basin water temperature is predicted.

[0069] Each of the detection assemblies 2 comprises a detection tube 21, the top of which is connected with a sealing frame 25 through a bearing rotating sleeve, and the top of the sealing frame 25 is rotatably installed with a receiving tube 26, the inside of which receives a temperature measuring probe 211; the bottom of the detection tube 21 is fixed with an expansion layer 23, the inside of which is provided with a sealing plate 314, and the bottom of the expansion layer 23 is fixedly connected with a discharge tube 24, the bottom of which is sealedly covered with a bottom cover 27; the top of the receiving tube 26 of the surface water level and the top of the receiving tube 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;

[0070] The connecting assembly 3 comprises a first telescopic support 31, the top and bottom of which 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; one side of the first telescopic support 31 is provided with a second telescopic support 32, the top and bottom of which are respectively connected with the sealing plate 314 of the surface water level and the sealing plate 314 of the deep water level; the outside of the expansion layer 23 of the surface water level and the outside of the expansion layer 23 of the deep water level are respectively provided with a first drive shaft 33 and a second drive shaft 34; the first drive shaft 33 is connected with the bottom cover 27, and the second drive shaft 34 is connected with the sealing frame 25;

[0071] The driving assembly 4 comprises two connecting rods 42, one end of one connecting rod 42 is rotatably connected with the top of the first telescopic support 31 through a rotating shaft, and one end of the other connecting rod 42 is rotatably connected with the top of the second telescopic support 32 through a rotating shaft;

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

[0073] When the device is used, a small and medium-sized river basin near a hydropower station is selected, an appropriate position in the small and medium-sized river basin to be detected is selected, the mounting plate 1 is installed on the bank, the two detection assemblies 2 connected with the mounting plate 1 are inserted into water, according to the water depth, the two detection assemblies 2 are arranged at the surface water level and the deep water level respectively, the detection assembly 2 is connected with the mounting plate 1 through the hanging rope 214, the two detection assemblies 2 are simultaneously driven by the driving assembly 4 and the connecting assembly 3 to sample and detect the temperature of the surface water and the deep water, two groups of temperature data are obtained respectively, a plurality of groups of data are obtained by selecting a plurality of point detections in the same water area, and water temperature detection is performed again by changing different water areas, the detected data are transmitted to a terminal through a communication module in the control box 11, and the technology is an existing data transmission technology, which will not be described in detail here.

[0074] The driving assembly 4 further comprises two electric push rods 41 in the embodiment. The top of the mounting plate 1 is fixed with two electric push rods 41 at the rear ends of two connecting rods 42, and the elongated end of one electric push rod 41 is rotatably connected with one connecting rod 42 through a rotating shaft. The top of the first driving shaft 33 and the second driving shaft 34 is rotatably installed at the bottom of the mounting plate 1, and two groups of motors 43 are fixed at the top of the mounting plate 1, and the two groups of motors 43 are fixedly connected with the first driving shaft 33 and the second driving shaft 34 respectively.

[0075] Through the pushing of one electric push rod 41, the corresponding first telescopic frame 31 and / or second telescopic frame 32 is vertically moved through the connecting rod 42, and the rotation of the corresponding first driving shaft 33 and / or second driving shaft 34 is driven to open through one motor 43, so that two groups of detection assemblies 2 can be simultaneously opened to detect the water temperature at different positions. The first telescopic frame 31 and the second telescopic frame 32 are reset through the spring 44.

[0076] The detection assembly 2 further comprises a heat preservation sleeve 22 in the embodiment. The detection tube 21 is sleeved with the heat preservation sleeve 22 outside. The detection tube 21 and the discharge pipe 24 have the same radius as the sealing plate 314, and the inner diameter of the expansion layer 23 is greater than that of the detection tube 21 and the discharge pipe 24. The inner wall of the receiving tube 26 is fixed with a friction sleeve 28, and the outer surface of the temperature measuring probe 211 is in sliding contact with the friction sleeve 28. The bottom of the receiving tube 26 is provided with a baffle 212, and the baffle 212 is fixedly connected with the bottom of the temperature measuring probe 211. The surface of the sealing frame 25 is provided with a first notch 29, and the top of the detection tube 21 is provided with a second notch 213 corresponding to the position of the first notch 29. The heat preservation sleeve 22 around the detection tube 21 can preserve the water after the water enters the inside of the detection tube 21, prevent the loss of water temperature, and make the temperature measurement value more accurate. When the temperature measuring probe 211 returns to the inside of the receiving tube 26 after each detection, it will contact the friction sleeve 28, remove the water through the friction sleeve 28, and wipe the probe surface, so as to avoid the accumulation of too much impurity and sludge on the surface of the temperature measuring probe 211.

[0077] The connecting assembly 3 further comprises a connecting shaft 312, the top side of the sealing plate 314 is fixed with the connecting shaft 312, the top of the connecting shaft 312 penetrates out of the sealing frame 25 and is fixedly connected with the second telescopic frame 32, the sealing frame 25 is rotatably installed with a shaft ring 210 at the position corresponding to the penetration position of the connecting shaft 312, and the connecting shaft 312 is slidingly inserted into the shaft ring 210, the top of the receiving tube 26 is slidingly inserted with a plug rod 313, the bottom of the plug rod 313 penetrates into the inside of the receiving tube 26 and is fixedly connected with the top of the temperature probe 211, the top of the plug rod 313 is fixedly connected with the first telescopic frame 31, the surfaces of the plug rod 313 and the connecting shaft 312 at the top of the first telescopic frame 31 and the second telescopic frame 32 are all sleeved with springs 44, and the bottom of the spring 44 is fixedly connected with the mounting plate 1, the surface of the second drive shaft 34 is fixedly connected with a second connecting plate 39, and the second connecting plate 39 is fixed on the outer wall of the receiving tube 26, the surface of the first drive shaft 33 is fixedly connected with a first connecting plate 37, and the first connecting plate 37 is fixedly connected with the bottom cover 27.

[0078] The first drive shaft 33 comprises two groups of coaxially arranged first drive shafts 33, a plug shaft 35 is slidingly inserted between the two groups of first drive shafts 33, and the surface of the plug shaft 35 is symmetrically provided with protrusions 38, and the first drive shaft 33 is slidingly connected with the protrusions 38;

[0079] The second drive shaft 34 comprises two groups of coaxially arranged second drive shafts 34, a plug shaft 35 is slidingly inserted between the two groups of second drive shafts 34, and the surface of the plug shaft 35 is symmetrically provided with protrusions 38, and the second drive shaft 34 is slidingly connected with the protrusions 38;

[0080] The sealing frame 25 is fixed with a tooth ring 311 on the top, the second drive shaft 34 is fixed with a gear 310 on the surface corresponding to the tooth ring 311, the gear 310 is connected with the tooth ring 311 in meshing, 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, preventing the water from entering the inside of the detection tube 21, at the same time, the baffle 212 seals the outlet end of the receiving tube 26, the temperature measuring probe 211 is received in the receiving tube 26, and the bottom cover 27 seals the discharge tube 24, preventing the water from entering the inside of the discharge tube 24, when detecting, first, the second drive shaft 34 is driven to rotate by the motor 43, the gear 310 is engaged with the tooth ring 311, the sealing frame 25 is rotated, the first notch 29 corresponds to the second notch 213, the 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 is filled with part of the water, the first telescopic frame 31 descends, the plug rod 313 moves downward, the temperature measuring probe 211 and the baffle 212 move downward synchronously, the temperature measuring probe 211 is inserted into the water to measure the current water temperature, after the measurement is completed, the temperature measuring probe 211 is retracted, then the second telescopic frame 32 drives the sealing plate 314 to descend through the connecting shaft 312, the sealing plate 314 enters the expansion layer 23, because the size of the expansion layer 23 is greater than that of the discharge tube 24 and the detection tube 21, the water enters the inside of the discharge tube 24, then the sealing plate 314 continues to descend and slides along the discharge tube 24, the first drive shaft 33 rotates to open the bottom cover 27, the water is pushed out of the discharge tube 24 by the pushing of the sealing plate 314, and then the bottom cover 27 and the sealing plate 314 are reset, at this time, there is no residual water in the inside of the detection tube 21 and the discharge tube 24, which can avoid interfering with the water temperature detection of the next group.

[0081] In the embodiment, the surfaces of the first telescopic frame 31, the second telescopic frame 32, the first drive shaft 33 and the second drive shaft 34 are all inserted with locking bolts 36, and the locking bolts 36 are in extrusion contact with the elongated ends of the first telescopic frame 31 and the second telescopic frame 32 and the plug shaft 35, after the detection assembly 2 is fixed at different positions on the bottom of the mounting plate 1 by the hanging rope 214, the first telescopic frame 31 and the second telescopic frame 32 are adjusted to the corresponding length, the distance between the two groups of first drive shafts 33 and the two groups of second drive shafts 34 is connected through the plug shaft 35, and is also corresponding to the distance of the two groups of detection assemblies 2, the length of each part of the connecting assembly 3 is locked through the locking bolt 36, so that when sampling, the two groups of detection assemblies 2 can synchronously complete the actions of water sampling, detection and water discharge, improve the detection efficiency, and keep the synchronization of detection, because the first drive shaft 33 and the second drive shaft 34 are in sliding clamping with the convex strip 38 on the plug shaft 35, after the length is adjusted, the synchronous rotation effect of the drive shafts on the same straight line can be kept.

[0082] When the device is used, a small and medium-sized basin near a hydropower station is selected, appropriate positions in the small and medium-sized basin to be detected are selected, the mounting plate 1 is mounted on the bank, two groups of detection assemblies 2 connected with the mounting plate 1 are inserted into the water, according to the water depth, the two groups of detection assemblies 2 are arranged at the surface water level and the deep water level respectively, the detection assembly 2 is connected with the mounting plate 1 through the hanging rope 214, the first telescopic frame 31 and the second telescopic frame 32 are adjusted to the corresponding lengths, the distance between the two groups of first driving shafts 33 and the two groups of second driving shafts 34 is connected through the plug shaft 35, and the distance is also corresponding to the distance of the two groups of detection assemblies 2, the lengths of the parts of the connecting assembly 3 are locked through the locking bolt 36, so that when sampling is performed, the two groups of detection assemblies 2 can synchronously complete the actions of water sampling, detection and drainage, the detection efficiency is improved, the synchronization of detection is maintained, because the first driving shaft 33 and the second driving shaft 34 are slidably connected with the convex strip 38 on the plug shaft 35, after the lengths are adjusted, the synchronous rotation effect of the driving shafts on the same straight line can be maintained, in the initial stage, the first gap 29 of the sealing frame 25 is misaligned with the second gap 213 of the detection pipe 21, water bodies are prevented from entering the inside of the detection pipe 21, meanwhile, the baffle 212 seals the outlet end of the storage pipe 26, the temperature measuring probe 211 is stored in the storage pipe 26, the bottom cover 27 seals the discharge pipe 24, and water bodies are prevented from entering the inside of the discharge pipe 24, when detection is performed, the first telescopic frame 31 and the second telescopic frame 32 are vertically moved through the pushing of the electric push rod 41, the rotation of the first driving shaft 33 and the second driving shaft 34 is started through the driving of the motor 43, the water temperature at different positions can be synchronously detected through the starting of the two groups of detection assemblies 2, the second driving shaft 34 is rotated, the gear 310 is engaged with the gear ring 311, the sealing frame 25 is rotated, the first gap 29 corresponds to the second gap 213, water flows from the gap into the inside of the detection pipe 21, and then the sealing frame 25 is reset, at this time, the inside of the detection pipe 21 is filled with part of the water bodies, the first telescopic frame 31 is lowered, the plug rod 313 is moved downward, the temperature measuring probe 211 and the baffle 212 are synchronously moved downward, the temperature measuring probe 211 is inserted into the water body to measure the current water temperature, after the measurement is completed, the temperature measuring probe 211 is retracted, then the second telescopic frame 32 drives the sealing plate 314 to descend through the connecting shaft 312, the sealing plate 314 enters the expansion layer 23, because the size of the expansion layer 23 is greater than that of the discharge pipe 24 and the detection pipe 21, water bodies enter the inside of the discharge pipe 24, then the sealing plate 314 continues to descend and slides along the discharge pipe 24, the bottom cover 27 is rotated and opened by the first driving shaft 33, the water bodies are pushed out of the discharge pipe 24 through the pushing of the sealing plate 314, and then the bottom cover 27 and the sealing plate 314 are reset, at this time, there is no residual water body in the inside of the detection pipe 21 and the discharge pipe 24, the next group of water temperature monitoring can be avoided, two groups of temperature data are obtained respectively, a plurality of groups of data are obtained through the selection of the same water area and the detection of a plurality of points, different water areas are replaced to perform water temperature detection again, the detected data are transmitted to the terminal through the communication module in the control box 11.

[0083] The application also provides a small and medium-sized watershed water temperature prediction method, which comprises the following steps:

[0084] Step S1, installation arrangement: selecting a small and medium-sized watershed near a hydropower station, selecting a suitable position in the small and medium-sized watershed to be detected, installing a mounting plate 1 on the bank, inserting two groups of detection assemblies 2 connected with the mounting plate 1 into water, and arranging the two groups of detection assemblies 2 at a surface water level and a deep water level according to water depth;

[0085] Step S2, connection installation: connecting the two groups of detection assemblies 2 through a connecting assembly 3, the length of the connecting assembly 3 corresponding to the distance between the two groups of detection assemblies 2, and the top of the connecting assembly 3 being connected with a driving assembly 4 on the mounting plate 1;

[0086] Step S3, water temperature monitoring: simultaneously driving the two groups of detection assemblies 2 to sample and detect the temperature of surface water and deep water through the driving assembly 4 and the connecting assembly 3, obtaining two groups of temperature data, selecting multiple points in the same water area to obtain multiple groups of temperature data, and replacing different water areas to perform water temperature monitoring again;

[0087] Step S3 specifically comprises the following steps:

[0088] Step S31, initially, each group of detection assemblies 2 is in an initial state, that is, the first gap 29 of the sealing frame 25 is misaligned with the second gap 213 of the detection pipe 21, so as to prevent water from entering the inside of the detection pipe 21, meanwhile, the baffle 212 seals the outlet end of the storage pipe 26, the temperature measuring probe 211 is stored in the storage pipe 26, and the bottom cover 27 seals the discharge pipe 24, so as to prevent water from entering the inside of the discharge pipe 24;

[0089] Step S32, when each group of detection assemblies 2 is in the initial state, inserting the two groups of detection assemblies 2 into water, and arranging the two groups of detection assemblies 2 at a surface water level and a deep water level according to water depth;

[0090] Step S33, simultaneously sampling the two groups of detection assemblies 2:

[0091] The second driving shaft 34 is driven to rotate by the motor 43, and the second driving shaft 34 rotates to simultaneously drive the gears 310 of the two groups of detection assemblies 2 to rotate, the gears 310 are engaged with the toothed rings 311, so that the sealing frames 25 of the two groups of detection assemblies 2 are rotated, the first gap 29 corresponds to the second gap 213, water flows into the inside of the detection pipe 21 from the gap, and then the sealing frame 25 is reset, at this time, the inside of the detection pipe 21 of each group of detection assemblies 2 is filled with part of water;

[0092] Step S34, simultaneously measuring the temperature of the two groups of detection assemblies 2:

[0093] The first telescopic frame 31 is driven to descend by the driving assembly 4, the plug rod 313 is moved downwards, the temperature measuring probes 211 and the baffles 212 of the surface water level and the deep water level are synchronously moved downwards, the temperature measuring probes 211 of the surface water level and the deep water level are inserted into the water in the detection pipes 21 to measure the current water temperature;

[0094] Step S35, the two groups of detection assemblies 2 are simultaneously drained:

[0095] After the measurement is completed, the temperature measuring probes 211 of the surface water level and the deep water level are retracted, then the second telescopic frame 32 drives the sealing plates 314 of the surface water level and the deep water level to descend through the connecting shaft 312, the sealing plates 314 enter the extension layer 23, because the size of the extension layer 23 is greater than that of the discharge pipes 24 and the detection pipes 21, the water enters the inside of the discharge pipes 24, then the sealing plates 314 continue to descend and slide along the discharge pipes 24, the first driving shaft 33 rotates and opens the bottom covers 27 of the surface water level and the deep water level, the water is pushed out of the discharge pipes 24 by the pushing of the sealing plates 314 of the surface water level and the deep water level, and then the bottom covers 27 and the sealing plates 314 are reset, at this time, there is no residual water in the inside of the detection pipes 21 and the discharge pipes 24, so that the next group of water temperature detection is not interfered.

[0096] Step S4, predicting water temperature: according to the size, length, distance from the hydropower station and water temperature data of the monitored small and medium-sized river basins, a database of different river basins is obtained, the database includes river basin information and surrounding environment, water temperature change speed, surface water temperature difference and deep water temperature difference of the river basin, and the influence change value of the hydropower station on the surrounding water temperature is predicted and compared with the monitoring data;

[0097] Step S5, result comparison: after the prediction result and the monitoring data are compared, the influence of the hydropower station on the surrounding water and the water temperature and the prediction analysis of the water temperature change of the similar river basin are obtained.

[0098] The small and medium-sized river basin water temperature prediction device and method have the following advantages:

[0099] 1. The first telescopic frame and the second telescopic frame are adjusted to the corresponding lengths, the distance between the two groups of first driving shafts and the two groups of second driving shafts is connected through the plug shaft, and the distance is also corresponding to the distance of the two groups of detection assemblies, the lengths of the parts of the connecting assembly are locked by the locking bolts, so that when sampling is performed, the two groups of detection assemblies can synchronously complete the actions of water taking, detection and drainage, the detection efficiency is improved, the synchronization of detection is maintained, and the first driving shaft and the second driving shaft can synchronously rotate along the same straight line due to the sliding clamping of the convex strips on the plug shaft.

[0100] 2. The application prevents water from entering the inside of the detection tube by misaligning the first gap of the sealing frame with the second gap of the detection tube, and prevents water from entering the inside of the discharge tube by sealing the outlet end of the storage tube with the baffle, storing the temperature measuring probe in the storage tube, and sealing the discharge tube with the bottom cover.

[0101] 3. Because the size of the expansion layer is larger than that of the discharge tube and the detection tube, water enters the inside of the discharge tube, and then the sealing plate continues to drop and slide along the discharge tube, the bottom cover is rotated open by the first drive shaft, the water is pushed out of the discharge tube by the pushing of the sealing plate, and the bottom cover and the sealing plate are reset, so that there is no residual water in the inside of the detection tube and the discharge tube, and the next group of water temperature monitoring can be avoided.

[0102] 4. The heat preservation sleeve around the detection tube can preserve the water after it enters the inside of the detection tube, prevent the loss of water temperature, and make the temperature measurement value more accurate, and when the temperature measuring probe returns to the inside of the storage tube after each detection, it will contact the friction sleeve to remove water and wipe the surface of the probe to avoid accumulation of too much impurities and silt on the surface of the temperature measuring probe.

[0103] 5. The first telescopic frame and the second telescopic frame are vertically moved by the push of the electric push rod, and the rotation of the first drive shaft and the second drive shaft is driven by the motor, so that two groups of detection components can be opened simultaneously to detect the water temperature at different positions, and the first telescopic frame and the second telescopic frame can be reset by the spring.

[0104] 6. Compared with the prior art, the water temperature of the surface layer and the deep layer of the water area can be monitored simultaneously by the two groups of detection components and the connecting component, the water is sampled during the monitoring process, and the sampling and monitoring processes are independent, so that the monitored water temperature is not affected by the water flow, and the temperature measuring probe can be protected and the water can be discharged after the detection is completed to maintain the detection accuracy.

[0105] The above shows and describes the basic principles and main features of the application and the advantages of the application, and it is obvious for those skilled in the art that the application is not limited to the details of the above exemplary embodiments, and the application can be realized in other specific forms without departing from the spirit or essential characteristics of the application.

[0106] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that can be understood by those skilled in the art.

Claims

1. A small and medium-sized river basin water temperature prediction device characterized by comprising: The utility model provides a kind of water temperature sampling detection device for small and medium-sized river basin, including installation plate (1), detection component (2), connecting component (3) and drive component (4); The installation plate (1) is arranged horizontally for installation on the bank of a small and medium-sized river basin to be detected near a hydropower station. The detection component (2) is provided in two groups, and the two groups of detection components (2) are hung at different heights at the bottom of the installation plate (1) to correspond to the surface water level and the deep water level respectively. The connecting component (3) is used to connect the two groups of detection components (2), and the length of the connecting component (3) corresponds to the distance between the two groups of detection components (2). The drive component (4) is used to connect with the top of the connecting component (3), and by driving the connecting component (3) to act, the two groups of detection components (2) are driven to take water, detect the water temperature and discharge water simultaneously, so as to complete the sampling detection of the surface and deep water temperature. Based on the sampling detection results, the water temperature of the small and medium-sized river basin is predicted.

2. The device for predicting water temperature in a small and medium-sized river basin according to claim 1, characterized in that, Each group of detection components (2) includes a detection tube (21), a sealing frame (25) is rotatably connected to the top of the detection tube (21) through a bearing, a receiving tube (26) is rotatably installed at the top of the sealing frame (25), and a temperature measuring probe (211) is received in the receiving tube (26); an expansion layer (23) is fixed to the bottom of the detection tube (21), a sealing plate (314) is arranged in the expansion layer (23), and a discharge tube (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 discharge tube (24). The top of the receiving tube (26) of the surface water level and the receiving tube (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 installation plate (1). The connecting component (3) includes a first telescopic frame (31), the top and 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), and the top and 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 drive shaft (33) and a second drive shaft (34); the first drive shaft (33) is connected with the bottom cover (27), and the second drive shaft (34) is connected with the sealing frame (25). The drive component (4) includes two connecting rods (42), and one connecting rod (42) is rotatably connected with the top of the first telescopic frame (31) through a rotating shaft, and the other connecting rod (42) is rotatably connected with the top of the second telescopic frame (32) through a rotating shaft. A control box (11) is fixedly installed at the top of the installation plate (1).

3. The device for predicting water temperature in a small and medium-sized river basin according to claim 2, characterized in that, The driving assembly (4) further comprises two electric push rods (41); the top of the mounting plate (1) is fixed with two electric push rods (41) at the rear ends of two connecting rods (42) symmetrically, and the elongated end of one electric push rod (41) is rotatably connected with one connecting rod (42) through a rotating shaft; the top of the first driving shaft (33) and the second driving shaft (34) are rotatably installed on the bottom of the mounting plate (1), and two groups of motors (43) are fixed on the top of the mounting plate (1), and the two groups of motors (43) are fixedly connected with the first driving shaft (33) and the second driving shaft (34) respectively; Through the pushing of one electric push rod (41), the corresponding first telescopic frame (31) and / or second telescopic frame (32) is driven to move vertically through the connecting rod (42), and the rotation of the corresponding first driving shaft (33) and / or second driving shaft (34) is driven to open by one motor (43), thereby synchronously opening two groups of detection assemblies (2) to detect the water temperature at different positions, and the first telescopic frame (31) and the second telescopic frame (32) are reset by the spring (44).

4. The device for predicting water temperature in a small or medium-sized river basin according to claim 2, characterized in that, Each group of detection assemblies (2) further comprises a heat preservation sleeve (22) and a friction sleeve (28); The outer side of the detection tube (21) is sleeved with a heat preservation sleeve (22), the detection tube (21) and the discharge pipe (24) have the same radius as the sealing plate (314), and the inner diameter of the expansion layer (23) is greater than that of the detection tube (21) and the discharge pipe (24); The inner wall of the receiving tube (26) is fixed with a friction sleeve (28), and the outer surface of the temperature measuring probe (211) is in sliding contact with the friction sleeve (28), the bottom of the receiving tube (26) is provided with a baffle (212), and the baffle (212) is fixedly connected with the bottom of the temperature measuring probe (211), and the surface of the sealing frame (25) is provided with a first notch (29), and the top of the detection tube (21) is provided with a second notch (213) corresponding to the position of the first notch (29).

5. The device for predicting water temperature in a small or medium-sized river basin according to claim 2, characterized in that, The connecting assembly (3) further comprises a connecting shaft (312), one side of the top of the sealing plate (314) is fixed with a connecting shaft (312), and the top of the connecting shaft (312) penetrates out of the sealing frame (25) and is fixedly connected with the second telescopic frame (32), and the sealing frame (25) is rotatably installed with a shaft ring (210) corresponding to the position where the connecting shaft (312) penetrates out, and the connecting shaft (312) is slidingly and sealingly inserted into the shaft ring (210).

6. The device for predicting water temperature in a small and medium-sized river basin according to claim 5, characterized in that, The top of the receiving tube (26) is slidingly inserted with a plug rod (313), the bottom of the plug rod (313) penetrates into the inside of the receiving tube (26) and is fixedly connected with the top of the temperature measuring probe (211), the top of the plug rod (313) is fixedly connected with the first telescopic frame (31), and the surfaces of the plug 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) are sleeved with springs (44), and the bottoms of the springs (44) are fixedly connected with the mounting plate (1).

7. The device for predicting water temperature in a small or medium-sized river basin according to claim 2, characterized in that, The surface of the second driving shaft (34) is fixed with a second connecting plate (39), and the second connecting plate (39) is fixed on the outer wall of the receiving tube (26). The surface of the first driving shaft (33) is fixed with a first connecting plate (37), and the first connecting plate (37) is fixedly connected with the bottom cover (27).

8. The device for predicting water temperature in a small or medium-sized river basin according to claim 2, characterized in that, The first driving shaft (33) includes two coaxially arranged groups of the first driving shaft (33). The plug shaft (35) is slidingly inserted between the two groups of the first driving shaft (33). The surface of the plug shaft (35) is symmetrically provided with a protrusion (38), and the first driving shaft (33) is slidingly connected with the protrusion (38). The second driving shaft (34) includes two coaxially arranged groups of the second driving shaft (34). The plug shaft (35) is slidingly inserted between the two groups of the second driving shaft (34). The surface of the plug shaft (35) is symmetrically provided with a protrusion (38), and the second driving shaft (34) is slidingly connected with the protrusion (38). The top of the sealing frame (25) is fixed with a tooth ring (311), and the surface of the second driving shaft (34) corresponding to the tooth ring (311) is fixed with a gear (310). The gear (310) is meshingly connected with the tooth ring (311). The surfaces of the first telescopic frame (31), the second telescopic frame (32), the first driving shaft (33) and the second driving shaft (34) are all inserted with locking bolts (36), and the locking bolts (36) are in extrusion contact with the elongated ends of the first telescopic frame (31) and the second telescopic frame (32) and the plug shaft (35).

9. The method of claim 1, wherein the device for predicting water temperature in a small or medium-sized river basin is characterized by, The prediction method comprises the following steps: Step S1, installation arrangement: selecting a small and medium-sized watershed near a hydropower station, selecting a suitable position in the to-be-detected small and medium-sized watershed, installing a mounting plate (1) on the bank, inserting two groups of detection assemblies (2) connected with the mounting plate (1) into water, and arranging the two groups of detection assemblies (2) at the surface water level and the deep water level according to the water depth; Step S2, connection installation: connecting the two groups of detection assemblies (2) through a connecting assembly (3), the length of the connecting assembly (3) corresponding to the distance between the two groups of detection assemblies (2), and the top of the connecting assembly (3) being connected with a driving assembly (4) on the mounting plate (1); Step S3, water temperature monitoring: sampling and detecting the temperature of the surface water and the deep water through the driving assembly (4) and the connecting assembly (3) driving the two groups of detection assemblies (2) at the same time, obtaining two groups of temperature data, selecting multiple point detection in the same water area to obtain multiple groups of temperature data, and replacing different water areas to perform water temperature monitoring again; Step S4, prediction of water temperature: classifying the monitored small and medium-sized watersheds according to the size, length, distance from the hydropower station and water temperature data of the watersheds, obtaining a database of different watersheds, the database including water area information and surrounding environment, water temperature change speed, surface water temperature difference and deep water temperature difference of the water area, and predicting the change value of the influence of the hydropower station on the surrounding water area, and comparing with the monitoring data. Step S5, result comparison: after comparing the predicted results with the monitoring data, the influence of the hydropower station on the surrounding water area and water temperature is obtained, and the prediction analysis of the water temperature change in similar water areas is obtained.

10. The method of claim 9, wherein the device for predicting water temperature in a small or medium-sized river basin is implemented. Step S3 is specifically: Step S31, initially, each group of detection assemblies (2) is in an initial state, that is, the first gap (29) of the sealing frame (25) is misaligned with the second gap (213) of the detection pipe (21), preventing water from entering the inside of the detection pipe (21), and the baffle (212) seals the outlet end of the storage pipe (26), the temperature probe (211) is stored in the storage pipe (26), and the bottom cover (27) seals the discharge pipe (24), preventing water from entering the inside of the discharge pipe (24); Step S32, when each group of detection assemblies (2) is in the initial state, insert the two groups of detection assemblies (2) into the water, and according to the water depth, arrange the two groups of detection assemblies (2) at the surface water level and the deep water level respectively; Step S33, sampling the two groups of detection assemblies (2) at the same time: The second drive shaft (34) is driven to rotate by the motor (43), and when the second drive shaft (34) rotates, the gear (310) of the two groups of detection assemblies (2) is also rotated, and since the gear (310) is engaged with the tooth ring (311), the sealing frame (25) of the two groups of detection assemblies (2) is rotated, the first gap (29) corresponds to the second gap (213), and the water flow enters the inside of the detection pipe (21) from the gap, and then the sealing frame (25) is reset, at this time, the inside of the detection pipe (21) of the two groups of detection assemblies (2) is filled with part of the water body; Step S34, temperature measurement of the two groups of detection assemblies (2) at the same time: The first telescopic frame (31) is driven to descend by the driving assembly (4), the insertion rod (313) is moved downward, the temperature probes (211) and baffles (212) at the surface water level and the deep water level are moved downward at the same time, and the temperature probes (211) at the surface water level and the deep water level are inserted into the water in the corresponding detection pipes (21) to measure the current water temperature; Step S35, draining water of the two groups of detection assemblies (2) at the same time: After the measurement is completed, the temperature probes (211) at the surface water level and the deep water level are retracted, then the second telescopic frame (32) drives the sealing plates (314) at the surface water level and the 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), the water will enter the inside of the discharge pipe (24), then the sealing plates (314) continue to descend, slide along the discharge pipe (24), the first drive shaft (33) rotates the bottom covers (27) at the surface water level and the deep water level to open, the water is pushed out of the discharge pipe (24) by the sealing plates (314) at the surface water level and the deep water level, and then the bottom covers (27) and the sealing plates (314) are reset, at this time, there is no residual water in the inside of the detection pipe (21) and the discharge pipe (24), avoiding interference with the next group of water temperature detection.

Images