Hydropower station flood discharge and drainage early warning and monitoring device

Abstract

The invention discloses a hydropower station flood discharge and drainage early warning and monitoring device, and relates to the technical field of monitoring devices.The hydropower station flood discharge and drainage early warning and monitoring device comprises an outdoor fixed rod, a monitoring cabinet, a heat dissipation box and a dehumidification concave frame, a heat dissipation fan is installed on the inner wall of the heat dissipation box, an air inlet groove is formed in the inner wall of the monitoring cabinet, and ventilation grooves are formed in the inner walls of the monitoring cabinet and the heat dissipation box; a dehumidification concave frame is arranged on the outer wall of the heat dissipation box, a dehumidification groove is formed in the inner wall of the dehumidification concave frame, a grating net is installed on the inner wall of the dehumidification concave frame, and a drying agent is arranged on the outer wall of the grating net. According to the invention, a heat dissipation mechanism is installed, drying agents are adhered to a grid net, a plurality of groups of drying agents are installed inside a dehumidification concave frame, the dehumidification concave frame is installed outside a heat dissipation box, a heat dissipation fan works to blow air into the monitoring cabinet through an air inlet groove, and external air is dried through the drying agents. And the heat dissipation work of the interior of the monitoring cabinet is further completed.

Description

Technical Field

[0001] This invention relates to the field of monitoring device technology, specifically to a flood discharge and drainage early warning monitoring device for hydropower stations. Background Technology

[0002] The hydropower station flood discharge early warning and monitoring device is a comprehensive management system integrating technologies such as the Internet of Things, big data, and cloud computing. It aims to monitor key flood discharge parameters in real time, provide early warnings of potential risks, and ensure downstream safety. The system comprises: a data acquisition layer – sensor equipment including water level gauges, rain gauges, flow meters, and gate position gauges, deployed at key locations such as the flood discharge outlet and dam to collect real-time data on water level, flow rate, rainfall, and video images; a data transmission layer using 4G DTU communication to transmit data to the cloud or monitoring center in real time, ensuring low latency and high reliability; and a data processing and analysis layer – cloud platform and data center – which cleans, stores, and analyzes the data, supporting time-series databases (such as MySQL and SQL Server) for storing real-time data and combining flood risk maps and historical data for trend prediction and monitoring.

[0003] Patent document CN217236925U discloses a flood discharge and drainage early warning monitoring device for a hydropower station. It discloses that the device "involves the field of flood discharge and drainage technology, including a gate frame assembly. A gate assembly is fixedly connected inside the gate frame assembly, and a sensing assembly is fixedly connected outside the gate frame assembly. A float slides inside the outer shell; when the water level changes, the float moves up and down accordingly. A laser rangefinder sensor monitors the position of the float in real time and generates data information which is transmitted to a microcontroller. A wireless transmission module transmits the data information to a remote location in real time. When the monitored water level exceeds the warning height, the microcontroller controls a warning light and a loudspeaker to issue an early warning. A command can be issued from the remote location to control a servo motor to raise the gate for drainage. When the monitored float lowers to a safe height with the water level, the warning light and loudspeaker are turned off, and the gate is closed. This structure can monitor and warn of water levels in real time, and can also issue commands from a remote location to drain water."

[0004] However, the aforementioned publicly available literature on a hydropower station flood discharge and drainage early warning monitoring device mainly considers the ability to monitor and warn of water levels in real time, and to issue commands for drainage from a remote location, which does not facilitate improving the heat dissipation efficiency inside the monitoring cabinet.

[0005] Therefore, it is necessary to develop a heat dissipation mechanism to improve the heat dissipation efficiency inside the monitoring cabinet. Summary of the Invention

[0006] The purpose of this invention is to provide a flood discharge and drainage early warning monitoring device for hydropower stations, so as to solve the technical problem of improving the heat dissipation efficiency of the flood discharge and drainage early warning monitoring device for hydropower stations mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a flood discharge and drainage early warning monitoring device for a hydropower station, comprising: an outdoor fixed pole and a monitoring cabinet, wherein the outer wall of the monitoring cabinet is provided with a heat dissipation mechanism, which is used to improve the heat dissipation efficiency inside the monitoring cabinet;

[0008] The heat dissipation mechanism includes a heat dissipation box and a dehumidification recessed frame. The heat dissipation box is located on the outer wall of the monitoring cabinet. A cooling fan is installed on the inner wall of the heat dissipation box. An air inlet slot is provided on the inner wall of the monitoring cabinet. Ventilation slots are provided on the inner walls of both the monitoring cabinet and the heat dissipation box. A dehumidification recessed frame is provided on the outer wall of the heat dissipation box and the monitoring cabinet. An interlocking groove is provided on the outer wall of the interlocking groove. A first magnet is installed on the inner wall of the interlocking groove. A second magnet is installed on the outer wall of the dehumidification recessed frame. Two sets of dehumidification recessed frames are provided. A dehumidification groove is provided on the inner wall of the dehumidification recessed frame. A grid mesh is installed on the inner wall of the dehumidification recessed frame. A desiccant is provided on the outer wall of the grid mesh. A tear-off adhesive is provided on the outer wall of the desiccant.

[0009] Preferably, a positioning seat is installed at the bottom of the outdoor pole, a circuit box is installed on the outer wall of the outdoor pole, an outdoor monitoring board is installed at the top of the outdoor pole, a rain sensor is installed at the top of the outdoor monitoring board, a plate is installed at the bottom of the outdoor monitoring board, a water level sensor is installed at the bottom of the plate, and a flow sensor is installed at the bottom of the plate.

[0010] Preferably, a display screen is embedded in the top of the monitoring cabinet, a control keyboard is installed on the top of the monitoring cabinet, a control mouse is installed on the top of the monitoring cabinet, an alarm light is installed on the top of the monitoring cabinet, and a switch is installed on the outer wall of the monitoring cabinet.

[0011] Preferably, the outer wall of the monitoring cabinet is equipped with a hinged access door.

[0012] Preferably, the outer wall of the monitoring cabinet is provided with a protective mechanism, which is used to protect the display screen when it is not in use.

[0013] Preferably, the protection mechanism includes an L-shaped plate located on the outer wall of the monitoring cabinet.

[0014] Preferably, an electric telescopic rod is installed on the top of the L-shaped plate.

[0015] Preferably, the output end of the electric telescopic rod is equipped with an assembly plate.

[0016] Preferably, the outer wall of the assembly plate is provided with assembly screw grooves, and a protective cover is installed on the outer wall of the assembly plate.

[0017] Preferably, an assembly screw is installed on the top of the protective cover, and a rubber protective edge is installed on the outer wall of the protective cover.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention improves the heat dissipation efficiency inside the monitoring cabinet by installing a heat dissipation mechanism. Prolonged operation of the monitoring cabinet can lead to heat buildup inside, hindering rapid heat dissipation and causing operational lag due to high heat levels. Therefore, this invention addresses this issue. Firstly, a peelable silicone adhesive is used to adhere desiccant to the grid mesh. Multiple sets of desiccant packs are installed inside the dehumidification recess, located on one side of the dehumidification groove. The grid mesh is tightly fitted to the dehumidification groove. Then, a second magnet is inserted into the fitting groove, attracting the first magnet. The dehumidification recessed frame is installed on the outside of the heat dissipation box, and the ventilation slot and the dehumidification slot are on a horizontal straight line. In the same way, another set of dehumidification recessed frames are installed on the outside of another set of ventilation slots on the monitoring cabinet. Then, the cooling fan blows air into the monitoring cabinet through the air inlet slot and transports and exhausts the outside air through the ventilation slot. At the same time, when the outside air enters, it passes through the desiccant to dry the outside air and filter the water vapor in the outside air. The ventilation slot has a dustproof screen inside. The desiccant is replaced and maintained manually at regular intervals, thereby completing the heat dissipation work inside the monitoring cabinet.

[0020] 2. This invention protects the display screen when not in use by installing a protective mechanism. Existing monitoring cabinets leave the display screen exposed when not in use, failing to adequately protect it. Therefore, this needs improvement. Firstly, the protective cover is made of transparent ABS plastic. Rotating the protective cover fixes the assembly screws into the assembly screw grooves, allowing the cover to be driven by an electric telescopic rod. As needed, the electric telescopic rod moves the assembly plate, which in turn moves the protective cover above the display screen, protecting it. Rubber protective edges are used to wrap and protect the four corners of the protective cover, thus completing the protection of the display screen. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the side structure of the outdoor fixed pole of the present invention;

[0023] Figure 3 This is a schematic diagram of the front structure of the monitoring cabinet of the present invention;

[0024] Figure 4 This is a schematic diagram of the side structure of the heat sink of the present invention;

[0025] Figure 5 This is a schematic diagram of the front structure of the protective cover of the present invention.

[0026] In the diagram: 1. Outdoor pole; 2. Positioning seat; 3. Circuit box; 4. Outdoor monitoring board; 5. Rain sensor; 6. Panel; 7. Water level sensor; 8. Flow sensor; 9. Monitoring cabinet; 10. Display screen; 11. Control keyboard; 12. Control mouse; 13. Alarm light; 14. Switch; 15. Hinged access door; 16. Heat sink; 17. Cooling fan; 18. Air inlet slot; 19. Ventilation slot; 20. Dehumidification recessed frame; 21. Fitting slot; 22. First magnet; 23. Second magnet; 24. Dehumidification slot; 25. Grille; 26. Tearable adhesive; 27. Desiccant; 28. L-shaped plate; 29. ​​Electric telescopic pole; 30. Assembly plate; 31. Assembly screw groove; 32. Assembly screw; 33. Protective cover; 34. Rubber protective edge. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] Please see Figure 1 and Figure 2A flood discharge and drainage early warning monitoring device for a hydropower station includes: an outdoor fixed pole 1 and a monitoring cabinet 9. A positioning base 2 is installed at the bottom of the outdoor fixed pole 1. A circuit box 3 is installed on the outer wall of the outdoor fixed pole 1. An outdoor monitoring plate 4 is installed at the top of the outdoor fixed pole 1. A rainfall sensor 5 is installed at the top of the outdoor monitoring plate 4. A plate 6 is installed at the bottom of the outdoor monitoring plate 4. A water level sensor 7 and a flow sensor 8 are installed at the bottom of the plate 6. A display screen 10 is embedded in the top of the monitoring cabinet 9. A control keyboard 11 is installed on the top of the monitoring cabinet 9. [Further details about the top of the monitoring cabinet 9 are not provided in the original text.] The control mouse 12, the alarm light 13 installed on the top of the monitoring cabinet 9, the switch 14 installed on the outer wall of the monitoring cabinet 9, the hinged maintenance door 15 installed on the outer wall of the monitoring cabinet 9, the outdoor fixed pole 1 installed in key locations such as flood discharge channels and reservoirs, the water level sensor 7 is an ultrasonic water level sensor, which can accurately sense changes in water level and provide basic data for judging flood discharge demand and drainage situation, the flow sensor 8 is an ultrasonic flow meter, used to measure the water flow of flood discharge and drainage, and accurate grasp of flow information helps to assess the intensity of flood discharge and its impact on downstream areas, and the rainfall sensor 5 is used to monitor rainfall. Rainfall is a crucial factor influencing reservoir water levels and flood discharge decisions. Real-time rainfall data acquisition allows for early prediction of water level trends. Circuit box 3 provides power to the components on the outdoor pole 1. The receiving module in circuit box 3 collects various data from the sensor module, performs preliminary processing and storage, converts analog signals to digital signals, and then transmits the data wirelessly to the display screen 10 on the monitoring cabinet 9. The monitoring cabinet 9 is a standard 42U cabinet, including two PDUs and a full set of accessories, cable trays, guide rails, and is black. Its dimensions are 600mm*1000mm*2000mm. Switch 14 is a 24-port gigabit switch with 24 gigabit electrical ports and 2 uplink optical ports. The display screen 10, control keyboard 11, and control mouse 12 are selected based on the size of the monitoring cabinet 9 to facilitate manual operation. The monitoring cabinet 9 uses 4G... The DTU supports both China Mobile and China Telecom platforms, and features transparent transmission mode, HTTPD mode, SMS transparent transmission mode, and MQTT mode. It supports TCP, UDP, DNS, FTP, HTTP, and MQTT, and is used to send SMS and MMS messages through China Mobile's 4G signal channel. The monitoring cabinet 9 contains a power module, data acquisition card, communication module, hard drive, relays, and contactors.

[0031] Please see Figure 1 , Figure 3 and Figure 4The outer wall of the monitoring cabinet 9 is equipped with a heat dissipation mechanism to improve the heat dissipation efficiency inside the monitoring cabinet 9. The heat dissipation mechanism includes a heat dissipation box 16 and a dehumidifying recessed frame 20. The heat dissipation box 16 is located on the outer wall of the monitoring cabinet 9. A cooling fan 17 is installed on the inner wall of the heat dissipation box 16. An air inlet slot 18 is provided on the inner wall of the monitoring cabinet 9. Both the monitoring cabinet 9 and the heat dissipation box 16 have ventilation slots 19 on their inner walls. A dehumidifying recessed frame 20 is provided on the outer wall of the heat dissipation box 16. Both the heat dissipation box 16 and the outer wall of the monitoring cabinet 9 have fitting grooves 21. The inner wall of the fitting grooves 21 is equipped with a... The first magnet 22, the outer wall of the dehumidifying recess 20 is equipped with a second magnet 23, and the dehumidifying recess 20 is provided with two sets of magnets. The inner wall of the dehumidifying recess 20 is provided with a dehumidification groove 24, and a grid mesh 25 is installed on the inner wall of the dehumidifying recess 20. The outer wall of the grid mesh 25 is provided with a desiccant 27, and the outer wall of the desiccant 27 is provided with a peelable adhesive 26. Prolonged operation of the monitoring cabinet 9 can cause heat buildup inside the cabinet, resulting in insufficient heat dissipation and potentially causing operational lag due to high heat levels. Therefore, this needs to be addressed. To improve the process, firstly, using a peelable adhesive 26 (a silicone adhesive), desiccant 27 is adhered to the mesh 25. Multiple sets of desiccant 27 are then installed inside the dehumidification recess 20, located on one side of the dehumidification trough 24. The mesh 25 and dehumidification trough 24 are tightly fitted together. Next, a second magnet 23 is inserted into the fitting groove 21 to attract the first magnet 22. The dehumidification recess 20 is then installed outside the heat dissipation box 16, with the venting groove 19 and dehumidification trough 24 aligned horizontally. Another set of venting grooves on the monitoring cabinet 9 is also installed. A set of dehumidifying recessed frames 20 are installed on the outside of the slot 19 in the same manner. Then, the cooling fan 17 blows air into the monitoring cabinet 9 through the air inlet slot 18 and delivers and discharges the outside air through the ventilation slot 19. At the same time, when the outside air enters, it passes through the desiccant 27 to dry the outside air and filter the water vapor in the outside air. The ventilation slot 19 has a dustproof net with a pore size of 50um. The desiccant 27 is replaced and maintained manually at regular intervals, thereby completing the heat dissipation work inside the monitoring cabinet 9.

[0032] Please see Figure 1 and Figure 5The outer wall of the monitoring cabinet 9 is equipped with a protective mechanism to protect the display screen 10 when not in use. The protective mechanism includes an L-shaped plate 28 located on the outer wall of the monitoring cabinet 9. An electric telescopic rod 29 is installed on the top of the L-shaped plate 28, and an assembly plate 30 is installed at the output end of the electric telescopic rod 29. The outer wall of the assembly plate 30 is provided with an assembly screw groove 31, and a protective cover 33 is installed on the outer wall of the assembly plate 30. An assembly screw 32 is installed on the top of the protective cover 33, and a rubber protective edge 34 is installed on the outer wall of the protective cover 33. Currently, when the monitoring cabinet 9 is not in use, the display screen 10 is exposed. Exposed to the outside, the display screen 10 cannot be well protected, so this needs to be improved. First, the protective cover 33 is made of transparent ABS plastic material. First, rotate the protective cover 33 so that the assembly screw 32 is fixed in the assembly screw groove 31, so that the protective cover 33 can be driven by the electric telescopic rod 29. Then, as needed, the electric telescopic rod 29 works to move the assembly plate 30, which in turn moves the protective cover 33 to the top of the display screen 10 to protect the display screen 10. The rubber protective edge 34 is used to protect the four corners of the protective cover 33, thereby completing the protection of the display screen 10.

[0033] The working principle involves installing the outdoor fixed pole 1 at key locations such as flood discharge channels and reservoirs. The water level sensor 7 is an ultrasonic water level sensor, which can accurately sense changes in water level and provide basic data for judging flood discharge needs and drainage conditions. The flow sensor 8 is an ultrasonic flow meter used to measure the water flow of flood discharge and drainage. Accurately grasping the flow information helps to assess the intensity of flood discharge and its impact on downstream areas. The rain sensor 5 is used to monitor rainfall. Rainfall is a crucial factor influencing reservoir water levels and flood discharge decisions. Real-time rainfall data acquisition allows for early prediction of water level trends. Circuit box 3 provides power to the components on the outdoor pole 1. The receiving module in circuit box 3 collects various data from the sensor module, performs preliminary processing and storage, converts analog signals to digital signals, and then transmits the data wirelessly to the display screen 10 on the monitoring cabinet 9. The monitoring cabinet 9 is a standard 42U cabinet, including two PDUs and a full set of accessories, cable trays, guide rails, and is black. Its dimensions are 600mm*1000mm*2000mm. Switch 14 is a 24-port gigabit switch with 24 gigabit electrical ports and 2 uplink optical ports. The display screen 10, control keyboard 11, and control mouse 12 are selected based on the size of the monitoring cabinet 9 to facilitate manual operation. The monitoring cabinet 9 uses 4G... The DTU supports both mobile and telecom platforms, and features pass-through modes, HTTPD mode, SMS pass-through mode, and MQTT mode. It supports TCP, UDP, DNS, FTP, HTTP, and MQTT, and is used to send SMS and MMS messages through China Mobile's 4G signal channel. The monitoring cabinet 9 contains a power module, data acquisition card, communication module, hard drive, relays, and contactors. Prolonged operation of the monitoring cabinet 9 can lead to heat buildup inside, hindering rapid heat dissipation and causing operational lag due to high heat levels. Therefore, improvements are needed. Firstly, a peelable silicone adhesive 26 is used to adhere desiccant 27 to the grid mesh 25. Multiple sets of desiccants 27 are then installed in the area... Inside the damping recess 20, located on one side of the dehumidification trough 24, the grille 25 fits tightly against the dehumidification trough 24. Then, the second magnet 23 is inserted into the fitting groove 21 to attract the first magnet 22, thus installing the dehumidification recess 20 outside the heat dissipation box 16. The ventilation groove 19 and the dehumidification trough 24 are on a horizontal straight line. Another set of dehumidification recesses 20 is installed on the outside of another set of ventilation grooves 19 on the monitoring cabinet 9 in the same manner. Then, the cooling fan 17 blows air into the monitoring cabinet 9 through the air inlet 18 and supplies and exhausts external air through the ventilation grooves 19. Simultaneously, when external air enters, it passes through the desiccant 27 to dry the external air, filtering out moisture. The ventilation groove 19 also has a dustproof mesh with a pore size of 50µm.Meanwhile, the desiccant 27 is manually replaced and maintained periodically to dissipate heat inside the monitoring cabinet 9. Currently, when the monitoring cabinet 9 is not in use, the display screen 10 is exposed, failing to provide adequate protection. Therefore, this needs improvement. Firstly, the protective cover 33 is made of transparent ABS plastic. Rotating the protective cover 33 fixes the assembly screw 32 into the assembly screw groove 31, allowing the protective cover 33 to be driven by the electric telescopic rod 29. As needed, the electric telescopic rod 29 moves the assembly plate 30, thus moving the protective cover 33 above the display screen 10 to protect it. Rubber protective edges 34 are used to protect the four corners of the protective cover 33, thereby completing the protection of the display screen 10.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A flood discharge and drainage early warning monitoring device for hydropower stations, characterized in that, Includes: an outdoor fixed pole (1) and a monitoring cabinet (9), wherein the outer wall of the monitoring cabinet (9) is provided with a heat dissipation mechanism, which is used to improve the heat dissipation efficiency inside the monitoring cabinet (9); The heat dissipation mechanism includes a heat dissipation box (16) and a dehumidifying recess (20). The heat dissipation box (16) is located on the outer wall of the monitoring cabinet (9). A cooling fan (17) is installed on the inner wall of the heat dissipation box (16). An air inlet slot (18) is provided on the inner wall of the monitoring cabinet (9). Ventilation slots (19) are provided on the inner walls of both the monitoring cabinet (9) and the heat dissipation box (16). A dehumidifying recess (20) is provided on the outer wall of the heat dissipation box (16). The device is provided with a fitting groove (21), the inner wall of which is equipped with a first magnet (22), the outer wall of which is equipped with a second magnet (23), and the dehumidifying recess (20) is provided with two sets of magnets. The inner wall of the dehumidifying recess (20) is provided with a dehumidifying groove (24), the inner wall of which is equipped with a grid mesh (25), the outer wall of which is provided with a desiccant (27), and the outer wall of which is provided with a tearable adhesive (26).

2. The hydropower station flood discharge and drainage early warning monitoring device according to claim 1, characterized in that: The outdoor pole (1) is equipped with a positioning seat (2) at its bottom, a circuit box (3) is installed on the outer wall of the outdoor pole (1), an outdoor monitoring plate (4) is installed on the top of the outdoor pole (1), a rain sensor (5) is installed on the top of the outdoor monitoring plate (4), a plate (6) is installed on the bottom of the outdoor monitoring plate (4), a water level sensor (7) is installed on the bottom of the plate (6), and a flow sensor (8) is installed on the bottom of the plate (6).

3. The early warning and monitoring device for flood discharge and drainage of a hydropower station according to claim 1, characterized in that: The top of the monitoring cabinet (9) is fitted with a display screen (10), the top of the monitoring cabinet (9) is fitted with a control keyboard (11), the top of the monitoring cabinet (9) is fitted with a control mouse (12), the top of the monitoring cabinet (9) is fitted with an alarm light (13), and the outer wall of the monitoring cabinet (9) is fitted with a switch (14).

4. The early warning and monitoring device for flood discharge and drainage of a hydropower station according to claim 1, characterized in that: The outer wall of the monitoring cabinet (9) is equipped with a hinged access door (15).

5. The early warning and monitoring device for flood discharge and drainage of a hydropower station according to claim 3, characterized in that: The outer wall of the monitoring cabinet (9) is provided with a protective mechanism, which is used to protect the display screen (10) when it is not in use.

6. The flood discharge and drainage early warning monitoring device for a hydropower station according to claim 5, characterized in that: The protection mechanism includes an L-shaped plate (28) located on the outer wall of the monitoring cabinet (9).

7. The early warning and monitoring device for flood discharge and drainage of a hydropower station according to claim 6, characterized in that: An electric telescopic rod (29) is installed on the top of the L-shaped plate (28).

8. The early warning and monitoring device for flood discharge and drainage of a hydropower station according to claim 7, characterized in that: An assembly plate (30) is installed at the output end of the electric telescopic pole (29).

9. A hydropower station flood discharge and drainage early warning monitoring device according to claim 8, characterized in that: The outer wall of the assembly plate (30) is provided with an assembly screw groove (31), and a protective cover (33) is installed on the outer wall of the assembly plate (30).

10. A hydropower station flood discharge and drainage early warning monitoring device according to claim 9, characterized in that: An assembly screw (32) is installed on the top of the protective cover (33), and a rubber protective edge (34) is installed on the outer wall of the protective cover (33).

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