An automatic dreg cleaning device for a water collecting well of a hydropower station

Abstract

This invention provides an automatic sludge removal device for a hydropower station's sump. The device includes a submersible sewage pump, a flushing pipe, an insulation monitoring device, and a control valve. The submersible sewage pump has a discharge port and a discharge port, with the discharge port positioned below the discharge port and close to the bottom of the sump. The discharge port is connected to an external pipeline to form a sewage discharge path. The flushing pipe is connected to the inside of the sump and is used to deliver water into the sump for flushing. The insulation monitoring device is located above the water level limit of the sump and connected to the submersible sewage pump. It monitors the insulation performance of the pump and generates an insulation monitoring signal. The control valve is located on the flushing pipe and controls its opening and closing. At least based on the insulation monitoring signal, if the insulation performance of the submersible sewage pump does not meet the set requirements, the water flow output from the flushing pipe is interrupted. This device can monitor the insulation performance of the submersible sewage pump in real time, ensuring safety during the sludge removal process. It automatically controls the sludge removal operation based on the monitoring results, improving sludge removal efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station sump dredging technology, specifically to an automatic sump dredging device for hydropower station sumps. Background Technology

[0002] Early hydroelectric power station sump cleaning relied primarily on manual labor. Cleaning personnel had to directly enter the wells to excavate, transport, and remove silt and debris. This method was extremely inefficient, especially for large-scale dredging operations, as it was time-consuming and labor-intensive. With technological advancements, some hydroelectric power stations began using mechanical dredging methods, such as excavators and vacuum trucks. However, these devices presented challenges in practical application, including safety risks, poor adaptability, and operational inconvenience, resulting in less than ideal dredging outcomes.

[0003] For example, some sludge removal technologies for collection wells employ fixed flushing pipes and submersible pumps. Maintenance personnel periodically activate the submersible pumps to flush away sediment at the bottom of the well, and then activate the pumps again to discharge the mixed sediment and wastewater from the collection well. However, fixed flushing pipes have many drawbacks. They cannot effectively flush away sediment from all areas at the bottom of the well, especially corners or distant areas, leading to long-term accumulation and reducing the well's capacity. Prolonged immersion in water can cause corrosion and damage, making maintenance difficult and costly. Continuous flushing of a fixed location at the bottom of the well with high-pressure air or water can damage the structural integrity of the well. Furthermore, existing sewage systems have low discharge efficiency and cannot monitor sediment accumulation at the bottom, requiring periodic pumping out of the well for manual cleaning. Delayed drainage can clog the submersible pump's intake, causing pump failure and posing a risk of flooding the plant.

[0004] Furthermore, most existing submersible sewage pumps lack real-time, online insulation monitoring capabilities, often relying solely on manual, periodic insulation resistance testing. This makes it difficult to detect insulation problems promptly, potentially leading to equipment malfunctions and safety accidents. Additionally, flushing valves are mostly manually controlled, requiring operators to be on-site to open and close them manually, hindering remote monitoring and automated control, thus reducing the efficiency and management level of dredging operations.

[0005] In summary, existing hydropower station sump cleaning technologies are inadequate in terms of dredging efficiency, safety, thoroughness, equipment maintenance costs, and the degree of intelligence and automation. Therefore, there is an urgent need for an automatic dredging device and method for hydropower station sumps that can solve the above problems. Utility Model Content

[0006] The present invention aims to solve at least one of the aforementioned technical problems existing in the prior art.

[0007] Therefore, this utility model provides an automatic sludge removal device for the water collection well of a hydropower station.

[0008] This utility model provides an automatic sludge removal device for the sump of a hydropower station, comprising:

[0009] A submersible sewage pump is installed at the bottom of the collection well. The submersible sewage pump has a sewage outlet and a sewage inlet. The sewage inlet is lower than the sewage outlet and is located close to the bottom of the collection well. The sewage outlet is connected to an external pipeline to form a sewage discharge path.

[0010] The flushing pipe is connected to the inside of the collection well and is used to deliver water into the collection well for flushing operations.

[0011] An insulation monitoring device is installed above the water level limit of the collection well and connected to the submersible sewage pump. It is used to monitor the insulation performance of the submersible sewage pump and generate an insulation monitoring signal based on the monitoring results. The insulation monitoring signal is used to indicate whether the insulation performance of the submersible sewage pump meets the set requirements.

[0012] A control valve is installed in the flushing pipe to control the opening and closing of the flushing pipe. The control valve, based at least on the insulation monitoring signal, keeps the water flow output of the flushing pipe in an interrupted state when the insulation performance of the submersible pump does not meet the set requirements.

[0013] Specifically, if the insulation performance of the submersible sewage pump does not meet the set requirements, the submersible sewage pump shall be kept in the off state.

[0014] The automatic sludge removal device for hydropower station sump wells according to the above-mentioned technical solution of this utility model may also have the following additional technical features:

[0015] In the above technical solution, the insulation monitoring device determines whether the insulation performance of the submersible pump meets the set requirements by measuring the insulation resistance value of the submersible pump housing.

[0016] In the above technical solution, the insulation monitoring device is equipped with a heat dissipation structure.

[0017] The above technical solution also includes:

[0018] The PLC control unit is used to receive acquisition signals and send control signals to control valves, insulation monitoring devices and submersible pumps according to the acquisition signals; the acquisition signals include at least insulation monitoring signals.

[0019] A junction box is located above the water level limit of the collection well; the submersible pump has signal lines leading out to collect and receive control signals, and several of the signal lines pass through the junction box and then communicate with the PLC control unit and the insulation monitoring device; the insulation monitoring device is arranged adjacent to the junction box.

[0020] The above technical solution also includes:

[0021] A first limiting frame is installed on the inner wall of the water collection well, and the flushing pipe is fixedly assembled to the first limiting frame, thereby limiting the displacement of the flushing pipe.

[0022] The above technical solution also includes:

[0023] The delivery pipe is connected to the sewage outlet and serves as a sewage discharge path to pump sewage from the submersible sewage pump to the outside of the collection well.

[0024] A second limiting frame is installed on the inner wall of the water collection well, and the delivery pipe is fixedly assembled to the second limiting frame, thereby limiting the displacement of the delivery pipe.

[0025] The above technical solution also includes:

[0026] A sludge sensor is installed below the sewage inlet, and the sludge sensor is used to monitor the sludge concentration in the collection well.

[0027] In the above technical solution, the submersible sewage pump is provided with a fixed base, and the submersible sewage pump is fixed to the bottom of the water collection well by the fixed base;

[0028] The silt sensor is mounted on the fixed base.

[0029] The above technical solution also includes:

[0030] A water level sensor is installed below the junction box, and the water level sensor is used to monitor the water level information in the collection well.

[0031] In the above technical solution, the submersible pump has a receiving cavity, and the sewage outlet and sewage inlet are respectively connected to the receiving cavity;

[0032] The submersible pump includes:

[0033] Electric motor;

[0034] A transmission cylinder is connected to the transmission end of the motor, and the transmission cylinder is disposed in the receiving cavity;

[0035] Blades, at least two blades are evenly arranged along the circumference of the transmission cylinder.

[0036] In summary, due to the adoption of the above-mentioned technical features, the beneficial effects of this utility model are:

[0037] This invention enables real-time, automatic monitoring of the insulation performance of submersible sewage pumps via an online insulation monitoring device. Before starting the pump, the insulation is automatically measured remotely, and only pumps with satisfactory insulation will proceed to the next step of the operation. This prevents the pump from starting with poor insulation, reducing the probability of motor short circuits, leakage, and other faults from the source, effectively ensuring the safety of equipment and personnel. Simultaneously, the real-time monitoring function can promptly detect minute changes in insulation performance, facilitating proactive maintenance and repair by staff, reducing equipment downtime, and improving the reliability and stability of equipment operation.

[0038] Specifically, the device is equipped with control valves, insulation monitoring devices, and a PLC control unit, enabling automated control of the dredging process in hydropower station sump wells. Compared to existing technologies where flushing valves are mostly manually controlled and require manual on-site opening and closing, this application eliminates the need for operators to frequently travel to the sump well site, significantly reducing labor intensity and work risks. It also avoids problems such as untimely or incomplete dredging due to untimely or erroneous manual operation, thus improving the efficiency and reliability of the dredging work.

[0039] By conveying water into the collection well through the flushing pipe, the sludge can be effectively agitated and mixed with water to form sewage that is easy to discharge. This facilitates the smooth extraction and discharge of the sewage by the submersible pump, thereby improving the thoroughness of dredging and the drainage efficiency of the collection well, ensuring the normal operation of the collection well, and reducing the risk of flooding of the factory.

[0040] The flushing pipes and conveying pipes in the device are fixedly mounted to the inner wall of the collection well using limiting frames. This restricts pipe displacement, ensures pipe stability during the dredging process, and prevents pipes from shaking, shifting, or even being damaged due to water flow impact, thus improving the reliability and service life of the device. Furthermore, the submersible pump is equipped with a fixed base, which can be stably fixed to the bottom of the collection well, ensuring the normal operation and pumping effect of the submersible pump.

[0041] In addition to insulation monitoring, the device is also equipped with a sludge sensor and a water level sensor, which can monitor the sludge concentration and water level in the collection well, respectively. The PLC control unit can precisely control the start and stop of the dredging operation and the operation of the submersible pump based on the comparison results of these parameters with the set values, realizing real-time monitoring and automatic dredging of the sludge accumulation in the collection well, avoiding unnecessary dredging operations, saving energy and water resources, and improving the targeting and effectiveness of dredging.

[0042] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0043] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0044] Figure 1 This is a schematic diagram of the structure of an automatic sludge removal device for a hydropower station sump according to an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the submersible sewage pump in an automatic sludge removal device for a hydropower station sump according to an embodiment of this utility model;

[0046] Figure 3 This is a schematic diagram of the internal structure of the submersible sewage pump in the automatic sludge removal device for hydropower station sump wells according to an embodiment of this utility model;

[0047] Figure 4 This is a flowchart of an automatic dredging method for a hydropower station sump well according to an embodiment of the present invention.

[0048] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0049] 1. Sump well; 2. Underground; 3. Ground surface; 4. Manhole cover; 5. Submersible sewage pump; 6. Signal line; 7. Fixed base; 8. Sludge sensor; 9. Sludge inlet pipe; 10. Sludge outlet pipe; 11. First limit frame; 12. Sludge flushing pipe; 13. Second limit frame; 14. Conveying pipe; 15. Control valve; 16. Junction box; 17. Insulation monitoring device; 18. PLC control unit; 19. Motor; 20. Water level sensor; 21. Transmission cylinder; 22. Blade. Detailed Implementation

[0050] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0051] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0052] The following reference Figures 1 to 4 This invention describes an automatic sludge removal device and method for hydropower station sump wells provided according to some embodiments of the present invention.

[0053] Some embodiments of this application provide an automatic dredging device for a hydropower station's sump well 1.

[0054] like Figure 1 As shown, the first embodiment of this utility model proposes an automatic sludge removal device for a hydropower station sump well 1, which includes at least: a submersible sludge pump 5, a sludge flushing pipe 12, an insulation monitoring device 17, and a control valve 15.

[0055] A submersible sewage pump 5 is installed at the bottom of the collection well 1. The submersible sewage pump 5 has a sewage outlet and a sewage inlet. The sewage inlet is lower than the sewage outlet and located close to the bottom of the collection well 1. The sewage outlet is connected to an external pipeline to form a sewage discharge path. A flushing pipe 12 is connected to the inside of the collection well 1 to deliver water into the collection well 1 for flushing operations. Specifically, one end of the flushing pipe 12 located outside the ground 2 is connected to an external water source. By flushing, the concentration of sludge and the degree of impurity accumulation in the collection well 1 can be reduced, thereby reducing the probability of failure of equipment such as the submersible sewage pump 5 due to blockage and wear, extending the service life of the equipment, reducing maintenance and repair costs, and maintaining the collection well 1 in good operating condition. This prevents the drainage and sewage discharge function from being affected by sludge blockage, ensuring the stable and normal operation of the entire drainage and sewage discharge system. An insulation monitoring device 17 is installed above the water level limit of the collection well 1 and connected to the submersible sewage pump 5. It monitors the insulation performance of the submersible sewage pump 5 and generates an insulation monitoring signal based on the monitoring results. This signal indicates whether the insulation performance of the submersible sewage pump 5 meets the set requirements. A control valve 15 is installed on the flushing pipe 12 to control its opening and closing. At least based on the insulation monitoring signal, the control valve 15 maintains an interrupted water flow output in the flushing pipe 12 when the insulation performance of the submersible sewage pump 5 does not meet the set requirements. Specifically, the control valve 15 can be an automatic valve of model Q611F-16P. Automatic valves do not require manual opening and closing on-site and can automatically execute actions according to preset programs, sensor signals, or remote commands, greatly reducing manpower input and making them particularly suitable for locations difficult for personnel to reach or hazardous environments.

[0056] Specifically, if the insulation performance of the submersible sewage pump 5 does not meet the set requirements, the submersible sewage pump 5 shall be kept in the off state.

[0057] It should be noted that the signal control involved in this disclosure can all be implemented through simple logic judgment circuits. For example, the acquired signal can be compared with a signal representing a set threshold input to a comparator, and the resulting logic level signal can be used to complete the opening and closing control of the corresponding switch or valve. Of course, the above signal control process can also be completed by program judgment, which will not be elaborated here.

[0058] Specifically, the water collection well 1 is usually located underground 2, that is, below the ground surface 3. The top of the water collection well 1 is equipped with an openable and closable well cover 4 to facilitate personnel to enter and exit for maintenance operations. Figure 2As shown, the sewage outlet of the submersible pump 5 is led out through the sewage outlet pipe 10, and the sewage inlet is led out through the sewage inlet pipe 9. At this time, the sewage outlet can be understood as the outlet of the sewage outlet pipe 10, and the sewage inlet can be understood as the inlet of the sewage inlet pipe 9.

[0059] It should be noted that the insulation monitoring device 17 selected in this disclosure is an online insulation monitoring device 17, which can be an insulation resistance monitoring device, a leakage current monitoring device, or a partial discharge monitoring device, etc., all of which can perform online measurement of the insulation performance of the submersible sewage pump 5. In some embodiments, the insulation monitoring device 17 determines whether the insulation performance of the submersible sewage pump 5 meets the set requirements by measuring the insulation resistance value of the casing of the submersible sewage pump 5. By comparing the real-time collected insulation resistance value with the set standard resistance value, it can be determined whether the insulation performance of the submersible sewage pump 5 meets the set requirements. If the insulation resistance value is less than the standard resistance value, it can be determined that its insulation performance does not meet the requirements, thus detecting insulation abnormalities in advance, avoiding safety accidents such as leakage and short circuits, and ensuring the safety of equipment and personnel.

[0060] Because an insulation resistance monitoring device is used, this type of insulation monitoring device 17 generates a lot of heat during online monitoring. Therefore, in some embodiments, the insulation monitoring device 17 is equipped with a heat dissipation structure. Specifically, a heat dissipation structure such as a cooling copper plate can be installed on the top of the insulation monitoring device 17 to dissipate heat; this prevents the device from degrading or being damaged due to prolonged high-temperature operation, extends its service life, ensures the stability and reliability of the online insulation monitoring device, and thus guarantees the safe and efficient operation of the entire submersible sewage pump 5.

[0061] In some embodiments, the automatic sludge removal device further includes a PLC control unit 18 and a junction box 16.

[0062] The PLC control unit 18 is used to receive acquired signals and send control signals to the control valve 15, the insulation monitoring device 17, and the submersible pump 5 based on the acquired signals. The acquired signals include at least insulation monitoring signals, and may also include water level information monitoring signals and sludge concentration monitoring signals, etc. The generated multiple control signals can respectively control the opening and closing of the insulation monitoring device 17, the submersible pump 5, and the control valve 15.

[0063] A junction box 16 is positioned above the water level limit of the collection well 1. The submersible pump 5 has signal lines 6 leading out to collect and receive control signals. Several signal lines 6 pass through the junction box 16 and then communicate with the PLC control unit 18 and the insulation monitoring device 17. The insulation monitoring device 17 is arranged adjacent to the junction box 16. It is understood that in this disclosure, the electrical control devices and their accessories (including the insulation monitoring device 17, junction box 16, etc.) are all positioned above the water level limit of the collection well 1 to protect the electrical control devices from water immersion.

[0064] In some embodiments, the automatic sludge removal device further includes a first limiting frame 11, a conveying pipe 14, and a second limiting frame 13. See again Figure 1 A first limiting frame 11 is disposed on one side of the inner wall of the collection well 1, and the flushing pipe 12 is fixedly assembled to the first limiting frame 11, thereby limiting the displacement of the flushing pipe 12. A conveying pipe 14 is connected to the sewage outlet, serving as a sewage discharge path for the submersible pump 5 to draw sewage and discharge it outside the collection well 1. A second limiting frame 13 is disposed on the other side of the inner wall of the collection well 1, and the conveying pipe 14 is fixedly assembled to the second limiting frame 13, thereby limiting the displacement of the conveying pipe 14. By setting the first limiting frame 11 and the second limiting frame 13, the pipes in the water collection well 1 are prevented from shaking or shifting within the water collection well 1, ensuring their accurate position, facilitating stable connection, maintaining the overall structural stability of the system, and avoiding problems such as wear, loosening of interfaces and leakage caused by water flow impact, vibration or external force collision of the inlet and outlet pipes, thus extending the service life of the pipes. In addition, the reasonable layout of the conveying path allows the water or sewage in the water collection well 1 to flow more smoothly into the conveying pipe 14 through the sewage pipe 10 and be discharged, improving sewage discharge efficiency.

[0065] In some embodiments, the automatic dredging device further includes a sludge sensor 8 and a water level sensor 20.

[0066] The sludge sensor 8 is positioned below the inlet, and is used to monitor the sludge concentration within the collection well 1. Specifically, as shown... Figure 2 As shown, the submersible pump 5 is equipped with a fixed base 7, and the submersible pump 5 is fixed to the bottom of the collection well 1 by the fixed base 7; the sludge sensor 8 is disposed on the fixed base 7. In some embodiments, the sludge sensor 8 is located three centimeters below the sewage inlet pipe 9.

[0067] The water level sensor 20 is positioned below the junction box 16 and is used to monitor the water level information in the collection well 1. In one specific embodiment, the water level sensor 20 is positioned 10 centimeters below the junction box 16, which can effectively monitor water level changes, ensure that the water level is within the normal fluctuation range, and prevent the water level from overflowing into the junction box 16 due to excessively high water levels, thus threatening the normal operation of the internal wiring and the online insulation monitoring device 17.

[0068] like Figure 3 As shown, the submersible pump 5 has a receiving cavity, and the sewage outlet and sewage inlet are respectively connected to the receiving cavity; the submersible pump 5 includes a motor 19, a transmission cylinder 21 and blades 22.

[0069] The transmission cylinder 21 is connected to the transmission end of the motor 19, and the transmission cylinder 21 is disposed in the receiving cavity; at least two blades 22 are evenly arranged along the circumference of the transmission cylinder 21. The motor 19, as the core power source, efficiently converts electrical energy into mechanical energy to drive the transmission cylinder 21 to rotate; the transmission cylinder 21 transmits the power of the motor 19 precisely through a stable transmission connection; the blades 22 on the outer wall of the transmission cylinder 21 rotate at high speed accordingly, and under the action of centrifugal force, it generates a strong suction and pushing force on the sewage, so that the sewage quickly enters the pump body through the sewage inlet pipe 9 and is discharged through the sewage outlet pipe 10.

[0070] Other embodiments of this utility model provide an automatic dredging method for a hydropower station collection well 1, which uses the automatic dredging device for the hydropower station collection well 1 as described in any of the above embodiments to perform the dredging operation of the collection well 1. The method includes:

[0071] The insulation monitoring device 17 is activated to collect insulation monitoring signals in real time and determine whether the insulation performance of the submersible sewage pump 5 meets the set requirements, that is, to compare whether the real-time monitored insulation resistance value meets the specified qualification standard; if the insulation performance of the submersible sewage pump 5 does not meet the set requirements, the sludge removal operation is stopped.

[0072] After the insulation performance of the submersible sewage pump 5 meets the set requirements, the flushing pipe 12 is opened by controlling valve 15 to perform flushing operation; and it is determined whether the flushing time has reached the set value; while flushing, the water level information and sludge concentration in the collection well 1 are monitored; in some embodiments, the set value of the flushing time can be 5 minutes or 10 minutes, etc., which can be adjusted as needed.

[0073] Once the flushing time reaches the set value, the water level and silt concentration in the collection well 1 are judged based on the real-time collected data. If the water level and silt concentration in the collection well 1 do not exceed the set threshold, the dredging program is exited and the control valve 15 is closed. If both the water level and silt concentration in the collection well 1 exceed the set threshold, the insulation monitoring device 17 is disconnected and the submersible sewage pump 5 is started to pump the sewage in the collection well 1 to the outside of the collection well 1.

[0074] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.

Claims

1. A device for automatic dredging of a water intake of a hydropower plant, characterized in that, include: A submersible sewage pump is installed at the bottom of the collection well. The submersible sewage pump has a sewage outlet and a sewage inlet. The sewage inlet is lower than the sewage outlet and is located close to the bottom of the collection well. The sewage outlet is connected to an external pipeline to form a sewage discharge path. The flushing pipe is connected to the inside of the collection well and is used to deliver water into the collection well for flushing operations. An insulation monitoring device is installed above the water level limit of the collection well and connected to the submersible sewage pump. It is used to monitor the insulation performance of the submersible sewage pump and generate an insulation monitoring signal based on the monitoring results. The insulation monitoring signal is used to indicate whether the insulation performance of the submersible sewage pump meets the set requirements. A control valve is installed in the flushing pipe to control the opening and closing of the flushing pipe. The control valve, based at least on the insulation monitoring signal, keeps the water flow output of the flushing pipe in an interrupted state when the insulation performance of the submersible pump does not meet the set requirements. Specifically, if the insulation performance of the submersible pump does not meet the set requirements, the submersible pump shall be kept in the off state.

2. The automatic desilting device for the water collecting well of the hydropower station according to claim 1, characterized in that, The insulation monitoring device determines whether the insulation performance of the submersible pump meets the set requirements by measuring the insulation resistance value of the pump casing.

3. The automatic desilting device for the water collecting well of the hydropower station according to claim 2, characterized in that, The insulation monitoring device is equipped with a heat dissipation structure.

4. The automatic desilting device for the water collecting well of the hydropower station according to claim 1, characterized in that, Also includes: The PLC control unit is used to receive acquired signals and send control signals to control valves, insulation monitoring devices, and submersible pumps based on the acquired signals; the acquired signals include at least insulation monitoring signals. A junction box is located above the water level limit of the collection well; the submersible pump has signal lines leading out to collect and receive control signals, and several of the signal lines pass through the junction box and then communicate with the PLC control unit and the insulation monitoring device; the insulation monitoring device is arranged adjacent to the junction box.

5. The automatic desilting device for the water collecting well of the hydropower station according to claim 1, characterized in that, Also includes: A first limiting frame is installed on the inner wall of the water collection well, and the flushing pipe is fixedly assembled to the first limiting frame, thereby limiting the displacement of the flushing pipe.

6. The automatic desilting device for the water collecting well of the hydropower station according to claim 1, characterized in that, Also includes: The delivery pipe is connected to the sewage outlet and serves as a sewage discharge path to pump sewage from the submersible sewage pump to the outside of the collection well. A second limiting frame is installed on the inner wall of the water collection well, and the delivery pipe is fixedly assembled to the second limiting frame, thereby limiting the displacement of the delivery pipe.

7. The automatic sludge removal device for hydropower station sump wells according to claim 1, characterized in that, Also includes: A sludge sensor is installed below the sewage inlet, and the sludge sensor is used to monitor the sludge concentration in the collection well.

8. The automatic desilting device for the water collecting well of the hydropower station according to claim 7, characterized in that, The submersible pump is equipped with a fixed base, and the submersible pump is fixed to the bottom of the water collection well by the fixed base; The silt sensor is mounted on the fixed base.

9. The automatic desilting device for the water collecting well of the hydropower station according to claim 4, characterized in that, Also includes: A water level sensor is installed below the junction box, and the water level sensor is used to monitor the water level information in the collection well.

10. The automatic desilting device for the water collecting well of the hydropower station according to claim 1, characterized in that, The submersible pump has a receiving cavity, and the sewage outlet and sewage inlet are respectively connected to the receiving cavity; The submersible pump includes: Electric motor; A transmission cylinder is connected to the transmission end of the motor, and the transmission cylinder is disposed in the receiving cavity; Blades, at least two blades are evenly arranged along the circumference of the transmission cylinder.

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