Hydropower station layered water temperature monitoring device

Abstract

The utility model discloses a layered water temperature monitoring device of hydropower station relates to water environment monitoring technical field, including support framework, layered monitoring unit, tail water monitoring unit, three -level fixed structure, composite cable and data collection box, and layered monitoring unit is adjusted and is laid in support framework through the butterfly clamp, and tail water monitoring unit and layered monitoring unit are accessed same data collection box through composite cable, and three -level fixed structure is constituted by anchoring bottom cone, buoy and top connecting piece, and the perpendicular stability of sensing array is ensured, and data collection box integrates power management, data acquisition and wireless transmission module, and the device realizes the synchronization of reservoir vertical layering and tail water temperature, and the continuous monitoring, and data integrity is high, and stability is strong, and system integration degree is high, and operation and maintenance are convenient, and are suitable for all kinds of hydropower station water temperature monitoring scene.

Description

Technical Field

[0001] This utility model relates to the field of water environment monitoring technology, and in particular to a stratified water temperature monitoring device for hydropower stations. Background Technology

[0002] The operation of hydropower stations alters the temperature structure of natural water bodies, creating stratified reservoirs and exerting thermal effects on downstream water bodies. This is related to aquatic ecological safety and power station operational efficiency. Currently, monitoring the water temperature of hydropower stations faces the following challenges: ① Traditional single-point temperature measurement or mobile profile measurement cannot achieve continuous, synchronous, and fixed-point monitoring of water temperature in different vertical water layers (especially surface temperature layer, oblique temperature layer and deep water layer) of the reservoir. It is difficult to capture the complete vertical profile structure of water temperature and its dynamic changes, and it is even more impossible to achieve high-precision time synchronization comparison of data between the reservoir and the tailwater outlet.

[0003] ② During monitoring, underwater sensors are easily affected by water flow and waves, causing displacement, swaying, or contact with silt, resulting in inaccurate monitoring depth, data distortion, or even equipment damage, making it difficult to meet the requirements of long-term, stable, and unattended monitoring.

[0004] To address the aforementioned issues, this utility model provides a stratified water temperature monitoring device for hydropower stations. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a stratified water temperature monitoring device for hydropower stations, which solves the problems mentioned in the background.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a hydropower station layered water temperature monitoring device, including a support frame, layered monitoring units, tailrace monitoring units, a three-level fixing structure, composite cables, and a data collection box; The surface of the support frame is provided with multiple adjusting screw holes at equal intervals from bottom to top, and the layered monitoring unit is multiple and evenly distributed on the support frame; The layered monitoring unit includes a butterfly clamp one that is slidably sleeved on the surface of the support frame. A connecting rod is vertically connected to the outer wall of the butterfly clamp one. The other end of the connecting rod is connected to a butterfly clamp two. A water temperature sensor is held inside the butterfly clamp two. The three-level fixed structure includes an anchoring bottom cone at the bottom of the support frame, a buoy in the middle and upper part, and a connector at the top, wherein the connector is connected to a fixed shore pile or floating platform. The stratified monitoring unit and the tailwater monitoring unit are connected to the data collection box via composite cables.

[0007] As a further technical solution of this utility model, the butterfly clamp is adjustable in position on the support frame, the water temperature sensor wiring harness is fixed in the adjustment screw hole on the support frame through a waterproof connector, the waterproof connector and the adjustment screw hole are threadedly connected, and the water temperature sensor wiring harness passes through the waterproof connector and is connected to the composite cable.

[0008] As a further technical solution of this utility model, the supporting frame is a stainless steel pipe and the anchoring bottom cone is made of metal.

[0009] As a further technical solution of this utility model, the tailwater monitoring unit is also a water temperature sensor, and the water temperature sensor is a stainless steel waterproof temperature sensor.

[0010] As a further technical solution of this utility model, the composite cable integrates power lines and data lines internally.

[0011] As a further technical solution of this utility model, the data collection box is a waterproof box, which integrates a power management module, a data acquisition device and a wireless transmission module. The power management module is used to convert the external input power into a voltage suitable for the operation of the sensors, and to provide centralized power to all underwater sensors. The data acquisition unit is used to receive and process data from all water temperature sensors; The wireless transmission module is used to remotely transmit the collected data to the cloud or monitoring center. The wireless transmission module is a 4G, 5G, or satellite communication module.

[0012] This utility model provides a stratified water temperature monitoring device for hydropower stations, which has the following advantages compared with the prior art: 1. The hydropower station stratified water temperature monitoring device designed in this paper utilizes the combination of stratified monitoring units and tailrace monitoring units with composite cables to achieve an integrated design. This facilitates the integration of reservoir and tailrace monitoring systems, reduces equipment and line laying costs, and, in conjunction with data acquisition from the data collection box, enables remote data transmission without the need for manual on-site data recording, thereby reducing operation and maintenance costs and safety risks.

[0013] 2. The hydropower station stratified water temperature monitoring device designed in this paper, with stratified monitoring units and tailrace monitoring units, can realize continuous, synchronous, and fixed-point monitoring of water temperature at different water layers in the vertical direction of the reservoir and the tailrace outlet. Moreover, the stratified monitoring units can be detached and moved on the support frame, which makes it convenient to flexibly adjust the number and deployment depth of the stratified monitoring units according to the reservoir depth and monitoring needs, and adapt to different scenarios.

[0014] 3. The hydropower station layered water temperature monitoring device designed in this paper adopts a three-level fixed structure on the support frame, which can effectively resist the impact of water flow and the swaying of wind and waves, ensure the constant depth of the sensor, avoid contact with bottom mud or floating objects, and ensure stable operation under long-term unattended operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural distribution diagram of the layered monitoring unit on the supporting frame in this utility model; Figure 3 for Figure 2 The front view; Figure 4 This is a schematic diagram of the structure of the layered monitoring unit in this utility model.

[0016] In the diagram: 1. Support frame; 11. Adjusting screw hole; 2. Float; 3. Layered monitoring unit; 31. Butterfly clamp one; 32. Connecting rod; 33. Butterfly clamp two; 34. Water temperature sensor; 35. Waterproof connector; 4. Anchoring bottom cone; 5. Composite cable; 6. Tailwater monitoring unit; 7. Data collection box. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution for a hydropower station stratified water temperature monitoring device: The hydropower station stratified water temperature monitoring device includes a support frame 1, stratified monitoring units 3, tailrace monitoring units 6, a three-level fixing structure, composite cables 5, and a data collection box 7. The stratified monitoring units 3 are multiple and evenly distributed on the support frame 1. The support frame 1 is a stainless steel pipe. Multiple adjusting screw holes 11 are opened at equal intervals from bottom to top on the surface of the support frame 1 to realize the position fixing and adjustment of the stratified monitoring units 3. The layered monitoring unit 3 includes a butterfly clamp 31 that slides onto the surface of the support frame 1. The position of the butterfly clamp 31 can be adjusted up and down along the support frame 1 and is tightened by a butterfly screw. A connecting rod 32 is vertically connected to the outer wall of the butterfly clamp 31. The other end of the connecting rod 32 is connected to a butterfly clamp 33. A water temperature sensor 34 is held inside the butterfly clamp 33. The position of the butterfly clamp 31 on the support frame 1 is adjustable. The wiring harness of the water temperature sensor 34 is fixed in the adjusting screw hole 11 on the support frame 1 through a waterproof connector 35. The waterproof connector 35 and the adjusting screw hole 11 are threaded together. The wiring harness of the water temperature sensor 34 passes through the waterproof connector 35 and is connected to the composite cable 5 to ensure waterproof performance. The three-level fixed structure includes an anchoring cone 4 at the bottom of the support frame 1, a float 2 in the middle and upper part, and a connector at the top. The connector is connected to the fixed shore pile or floating platform. The anchoring cone 4 is made of metal and is fixed to the bottom of the water. The float 2 provides vertical upward buoyancy. The top connector is connected to the fixed shore pile or floating platform. The three work together to keep the support frame 1 and the layered monitoring unit 3 in a vertical tension state at all times. The layered monitoring unit 3 and the tailwater monitoring unit 6 are connected to the data collection box 7 via the composite cable 5. The tailwater monitoring unit 6 is also a water temperature sensor 34, which is a stainless steel waterproof temperature sensor, model PT100, with the probe material being 201 stainless steel to ensure water resistance and corrosion resistance. The composite cable 5 integrates power cord and data cable internally.

[0019] The data collection box 7 is a waterproof box that integrates a power management module, a data acquisition unit and a wireless transmission module. The power management module is used to convert the external input power into a voltage suitable for the sensor to work, providing centralized power to all underwater sensors. The data acquisition unit is used to receive and process data from all water temperature sensors 34; The wireless transmission module is used to remotely transmit the collected data to the cloud or monitoring center. The wireless transmission module can be a 4G, 5G, or satellite communication module.

[0020] The working principle of this utility model is as follows: During actual installation, firstly, based on the reservoir depth and monitoring requirements, determine the number and spacing of the layered monitoring units 3, then put the butterfly clamp 31 on the corresponding position of the support frame 1, and fix the wire harness of the water temperature sensor 34 to the adjusting screw hole 11 through the waterproof connector 35 to complete the installation of the layered monitoring unit 3. The anchoring cone 4 at the bottom of the support frame 1 is fixed to a preset position on the bottom of the reservoir. A float 2 is installed in the upper part of the support frame 1. The buoyancy of the float 2 is used to initially tension the support frame 1. Then, the connector at the top of the support frame 1 is connected to the fixed shore pile or floating platform on the shore to achieve three-level fixation and ensure the vertical stability of the support frame 1. Furthermore, the tailwater monitoring unit 6 is installed at a pre-set monitoring point at the tailwater outlet of the hydropower station. The water temperature sensors 34 of all the layered monitoring units 3 and the tailwater monitoring unit 6 are connected by composite cables 5. The other end of the composite cables 5 is connected to the data collection box 7 on the shore or floating platform. Then, the external power supply of the data collection box 7 is turned on. The power management module converts the power supply to the appropriate voltage and powers all the sensors. The water temperature sensors 34 collect water temperature data and transmit it to the data acquisition unit in the data collection box 7 through the composite cables 5. After processing, the data is remotely sent to the cloud or monitoring center by the wireless transmission module to achieve real-time monitoring.

[0021] If the monitoring depth needs to be adjusted, the waterproof connector 35 and the butterfly clamp 31 can be loosened, the layered monitoring unit 3 can be moved along the support frame 1 to the target position, and then the waterproof connector 35 and the butterfly clamp 31 can be re-fixed.

[0022] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A stratified water temperature monitoring device for a hydropower station, characterized in that, It includes a support frame (1), a layered monitoring unit (3), a tailwater monitoring unit (6), a three-level fixed structure, a composite cable (5), and a data collection box (7); The surface of the support frame (1) is provided with multiple adjusting screw holes (11) at equal intervals from bottom to top, and the layered monitoring unit (3) is multiple and evenly distributed on the support frame (1). The layered monitoring unit (3) includes a butterfly clamp one (31) that is slidably sleeved on the surface of the support frame (1). A connecting rod (32) is vertically connected to the outer wall of the butterfly clamp one (31). The other end of the connecting rod (32) is connected to a butterfly clamp two (33). A water temperature sensor (34) is held inside the butterfly clamp two (33). The three-level fixed structure includes an anchoring bottom cone (4) at the bottom of the support frame (1), a float (2) in the middle and upper part, and a connector at the top, which is connected to a fixed shore pile or floating platform; The layered monitoring unit (3) and the tailwater monitoring unit (6) are connected to the data collection box (7) via composite cable (5).

2. The hydropower station stratified water temperature monitoring device according to claim 1, characterized in that, The butterfly clamp (31) is adjustable on the support frame (1). The wire harness of the water temperature sensor (34) is fixed in the adjustment screw hole (11) on the support frame (1) through the waterproof connector (35). The waterproof connector (35) and the adjustment screw hole (11) are threaded together. The wire harness of the water temperature sensor (34) passes through the waterproof connector (35) and is connected to the composite cable (5).

3. The hydropower station stratified water temperature monitoring device according to claim 1, characterized in that, The butterfly clamp (31) is adjustable on the support frame (1). The wire harness of the water temperature sensor (34) is fixed in the adjustment screw hole (11) on the support frame (1) through the waterproof connector (35). The waterproof connector (35) and the adjustment screw hole (11) are threaded together. The wire harness of the water temperature sensor (34) passes through the waterproof connector (35) and is connected to the composite cable (5).

4. The hydropower station stratified water temperature monitoring device according to claim 1, characterized in that, The tailwater monitoring unit (6) is also a water temperature sensor (34), and the water temperature sensor (34) is a stainless steel waterproof temperature sensor.

5. The hydropower station stratified water temperature monitoring device according to claim 1, characterized in that, The composite cable (5) integrates power and data cables.

6. The hydropower station stratified water temperature monitoring device according to claim 1, characterized in that, The data collection box (7) is a waterproof box, which integrates a power management module, a data acquisition unit and a wireless transmission module. The power management module is used to convert the external input power into a voltage suitable for the operation of the sensors, and to provide centralized power to all underwater sensors. The data acquisition unit is used to receive and process data from all water temperature sensors (34); The wireless transmission module is used to remotely transmit the collected data to the cloud or monitoring center. The wireless transmission module is a 4G, 5G, or satellite communication module.

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