Hydrodynamic leakage drainage system for medium-high water head hydropower station

Abstract

The invention discloses a hydrodynamic leakage drainage system for a medium-high water head hydropower station, which comprises a water taking module for introducing pressure water from a water diversion pressure steel pipe of the hydropower station; the water quality purification module is used for filtering impurities in the pressure water; the pressure adjusting module is used for adjusting the pressure of the pressure water; the power conversion module is used for converting hydraulic energy of the pressure water into mechanical energy; the drainage module is used for pumping and draining accumulated water of the leakage water-collecting well by using mechanical energy; and the monitoring control module is used for monitoring the operation state of the system and controlling the operation of each component of the system. The method has the beneficial effects that continuous drainage under the condition of power loss of the whole plant is realized by utilizing hydraulic resources of the hydropower station, and the safety of the hydropower station is remarkably improved. And the design of multi-stage filtration and pressure regulation is adopted, so that the accurate control on the displacement is realized. By means of the horizontal water turbine pump, direct conversion from hydraulic energy to mechanical energy is achieved, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of safe operation of a hydropower station, in particular to a hydrodynamic leakage drainage system for a medium-high water head hydropower station. Background Art

[0002] At present, the leakage drainage system of medium and high head hydropower stations mostly uses redundant submersible pumps or deep well pumps to pump out the water in the leakage collection wells. Its characteristic is that it uses electric motors to drive the pump impeller to rotate to achieve the pumping and drainage function. When the whole plant loses power, the leakage drainage system loses its function, and the water level in the leakage collection well continues to rise. In serious cases, it will cause the plant to flood and affect the safe operation of the hydropower station.

[0003] The traditional system is completely dependent on the power supply. In the event of a power outage in the entire plant, the seepage drainage system will be completely ineffective. This will cause the water level in the seepage collection well to continue to rise, and in severe cases may even cause a flooding accident in the plant, posing a major threat to the safe operation of the hydropower station. This single energy dependence greatly reduces the reliability and safety of the system. The existing technology does not fully utilize the hydropower resources of the hydropower station itself. The hydropower station itself contains huge hydraulic energy, but the traditional drainage system ignores this and relies solely on external power input, which is undoubtedly a waste of resources. The existing technology also has shortcomings in water quality treatment. The leaking water may contain a large amount of impurities. If these impurities are not properly treated, they may damage the drainage equipment and reduce the service life of the system. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a hydrodynamic leakage drainage system for a medium-to-high head hydropower station, which can solve the problem of power outage in the entire plant, causing the leakage drainage system to lose its function, or even flooding the plant, affecting the safe operation of the hydropower station.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a hydrodynamic leakage drainage system for a medium-high head hydropower station, which includes a water intake module for introducing pressurized water from a water diversion pressure steel pipe of the hydropower station; a water purification module for filtering impurities in the pressurized water; a pressure regulating module for regulating the pressure of the pressurized water; a power conversion module for converting the hydraulic energy of the pressurized water into mechanical energy; a drainage module for pumping out water from a leaking sump using mechanical energy; and a monitoring and control module for monitoring the system operating status and controlling the operation of each component of the system.

[0008] As a preferred solution of the hydrodynamic leakage drainage system of a high-head hydropower station in the present invention, the water intake module includes a water diversion pressure steel pipe, a water intake trash rack connected to one end of the water diversion pressure steel pipe, and a purge pipeline for cleaning the water intake trash rack, the water intake trash rack is connected to the water diversion pressure steel pipe by a flange, and the flexible joint of the purge pipeline is connected to the air system by a hose.

[0009] As a preferred solution of the hydrodynamic leakage drainage system of the high-head hydropower station in the present invention, the water purification module includes a water filter connected to the water intake module, the water intake module and the water filter constitute two floating barriers, improve the water quality entering the pressure regulating module and the power conversion module, and the water filter is respectively connected to the water intake trash rack and the pressure reducing valve through water pipelines.

[0010] As a preferred solution of the hydrodynamic leakage drainage system of the high-head hydropower station in the present invention, the pressure regulating module includes a pressure reducing valve connected to the water purification module, which is used to adjust the water pressure entering the power conversion module, and the speed and drainage volume of the power conversion module are controlled by adjusting the opening of the pressure reducing valve. The pressure reducing valve is respectively connected to the water filter and the horizontal water turbine pump through water pipelines.

[0011] As a preferred solution of the hydrodynamic leakage drainage system of the high-head hydropower station in the present invention, the power conversion module and the drainage module constitute a horizontal water wheel pump, including a horizontal water turbine and a horizontal drainage pump, and the horizontal water turbine shaft of the horizontal water turbine is connected to the horizontal drainage pump shaft of the horizontal drainage pump through a coupling.

[0012] As a preferred solution of the hydrodynamic leakage drainage system of the high-head hydropower station in the present invention, the monitoring and control module includes several groups of pressure gauges for monitoring the water pressure at key points of the system, including: a first pressure gauge for monitoring the water pressure after the water intake module and before the water purification module; a second pressure gauge for monitoring the water pressure after the water purification module and before the pressure regulating module; a third pressure gauge for monitoring the water pressure after the pressure regulating module and at the inlet of the power conversion module; a fourth pressure gauge for monitoring the water pressure at the outlet of the power conversion module; and a fifth pressure gauge for monitoring the water pressure at the outlet of the drainage module.

[0013] As a preferred solution of the hydrodynamic leakage drainage system of the high-head hydropower station in the present invention, the monitoring and control module also includes a flow signaler for monitoring the drainage conditions of the power conversion module and the drainage module, specifically including: a first flow signaler for monitoring the drainage conditions of the power conversion module; a second flow signaler for monitoring the drainage conditions of the drainage module.

[0014] As a preferred solution of the hydrodynamic leakage drainage system of the high-head hydropower station in the present invention, the monitoring and control module also includes a check valve for preventing the power conversion module and the drainage module from reversing when they are not working, specifically including: a first check valve for preventing the power conversion module from reversing when it is not working; a second check valve for preventing the drainage module from reversing when it is not working.

[0015] As a preferred solution of the hydrodynamic leakage drainage system of the high-head hydropower station in the present invention, the monitoring and control module also includes several groups of manual ball valves, specifically including: a first manual ball valve, used to control the purge airflow of the water intake module; a second manual ball valve and a third manual ball valve, used to control the water inlet and outlet of the water purification module; a fourth manual ball valve and a fifth manual ball valve, used to control the water inlet and outlet of the pressure regulating module; a sixth manual ball valve and a seventh manual ball valve, used to control the water inlet and outlet of the power conversion module and the drainage module.

[0016] As a preferred solution of the hydrodynamic leakage drainage system of the high-head hydropower station in the present invention, the monitoring and control module also includes an intelligent control component, which is used to: automatically adjust the opening of the pressure reducing valve according to the data of the pressure gauge and the flow signal; automatically start the purge program or the cleaning program when the trash rack or water filter of the water intake is detected to be blocked; automatically control the start and stop of the horizontal water turbine pump according to the water level of the leakage collection well; and automatically execute protection measures and send out an alarm signal when the system is abnormal.

[0017] Beneficial effects of the present invention: The present invention realizes continuous drainage in the event of a power outage in the entire plant by utilizing the hydropower resources of the hydropower station itself, effectively solving the problem that traditional electric-driven pumps cannot work during power outages, and significantly improving the safety of the hydropower station. The multi-stage filtration and pressure regulation design not only protects the core equipment and extends the life of the system, but also achieves precise control of the drainage volume, improving the adaptability and efficiency of the system. Through the horizontal turbine pump, the direct conversion of hydraulic energy to mechanical energy is achieved, simplifying the energy conversion process and improving energy utilization efficiency. Through a comprehensive monitoring and control module, the automation level and response speed of the system are greatly improved, the manpower requirements are reduced, and the safety and reliability of the system are enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the hydrodynamic leakage drainage system of a medium and high head hydropower station.

[0020] Figure 2 This is a schematic diagram of the structure of a horizontal turbine pump in a hydrodynamic leakage drainage system for a medium- and high-head hydropower station. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0024] Example 1

[0025] Reference Figure 1 , which is the first embodiment of the present invention, provides a hydrodynamic seepage drainage system for a medium-high head hydropower station, which includes: when the system is in normal operation, pressurized water is introduced from the water diversion pressure steel pipe 100, and after preliminary filtration through the water intake trash rack 200, it enters the water filter 400 for further purification. The purified water is pressure-regulated by the pressure reducing valve 500, and then enters the horizontal turbine 601 to be converted into mechanical energy. This mechanical energy is transmitted to the horizontal drainage pump 602 through the coupling 605, and is used to pump out the water accumulated in the seepage collection well.

[0026] Specifically, the water intake module is used to introduce pressurized water from the water diversion penstock of the hydropower station;

[0027] Water purification module, used to filter impurities in pressurized water;

[0028] A pressure regulating module, used for regulating the pressure of pressurized water;

[0029] A power conversion module, used to convert hydraulic energy of pressurized water into mechanical energy;

[0030] A drainage module is used to drain the water from the seepage collection well using mechanical energy;

[0031] The monitoring and control module is used to monitor the system operating status and control the operation of each system component.

[0032] In summary, the present invention realizes continuous drainage in the event of a power outage in the entire plant by utilizing the hydropower resources of the hydropower station itself, effectively solves the problem that traditional electric-driven pumps cannot work during power outages, and significantly improves the safety of the hydropower station. The multi-stage filtration and pressure regulation design not only protects the core equipment and extends the life of the system, but also achieves precise control of the drainage volume, improving the adaptability and efficiency of the system. Through the horizontal turbine pump, the direct conversion of hydraulic energy to mechanical energy is achieved, the energy conversion process is simplified, and the energy utilization efficiency is improved. Through a comprehensive monitoring and control module, the automation level and response speed of the system are greatly improved, the manpower requirements are reduced, and the safety and reliability of the system are enhanced.

[0033] Example 2

[0034] Reference Figures 1-2 , which is the second embodiment of the present invention, provides a hydrodynamic seepage drainage system for a medium-high head hydropower station, which includes: when the system is in normal operation, pressurized water is introduced from the water diversion pressure steel pipe 100, and after preliminary filtration through the water intake trash rack 200, it enters the water filter 400 for further purification. The purified water is pressure-regulated by the pressure reducing valve 500, and then enters the horizontal turbine 601 to be converted into mechanical energy. This mechanical energy is transmitted to the horizontal drainage pump 602 through the coupling 605, which is used to pump out the water accumulated in the seepage collection well.

[0035] Specifically, the water intake module is used to introduce pressurized water from the water diversion penstock of the hydropower station;

[0036] Water purification module, used to filter impurities in pressurized water;

[0037] A pressure regulating module, used for regulating the pressure of pressurized water;

[0038] A power conversion module, used to convert hydraulic energy of pressurized water into mechanical energy;

[0039] A drainage module is used to drain the water from the seepage collection well using mechanical energy;

[0040] The monitoring and control module is used to monitor the system operating status and control the operation of each system component.

[0041] Furthermore, the water intake module includes a water diversion pressure steel pipe 100, a water intake trash rack 200 connected to one end of the water diversion pressure steel pipe 100, and a purge pipeline 300 for cleaning the water intake trash rack 200. The water intake trash rack 200 is connected to the water diversion pressure steel pipe 100 through a flange, and the flexible joint 301 of the purge pipeline 300 is connected to the gas system through a hose.

[0042] Furthermore, the water purification module includes a water filter 400 connected to the water intake module. The water intake module and the water filter 400 constitute two barriers to prevent drift, thereby improving the water quality entering the pressure regulating module and the power conversion module. The water filter 400 is respectively connected to the water intake trash rack 200 and the pressure reducing valve 500 through water pipelines.

[0043] Preferably, the water intake trash rack 200 is connected to the water diversion pressure steel pipe 100 through a flange, which is used for roughly filtering floating objects in the water. As the first floating barrier, the water filter 400 is connected to the water intake trash rack 200 and the pressure reducing valve 500 through water pipelines, respectively, for finely filtering floating objects in the water. As the second floating barrier, the pressure reducing valve 500 is connected to the water filter 400 and the horizontal water turbine pump 600 through water pipelines, respectively. The water flow is adjusted by adjusting the pressure reducing valve 500 to control the rotation speed and displacement of the horizontal water turbine pump 600. The horizontal turbine shaft 603 is connected to the horizontal drainage pump shaft 604 through a coupling 605. The horizontal drainage pump 602 is driven to rotate by the rotation of the horizontal turbine 601, so as to realize the function of pumping water accumulated in the leaking water collection well to the tail water.

[0044] Furthermore, the pressure regulating module includes a pressure reducing valve 500 connected to the water purification module, which is used to adjust the water pressure entering the power conversion module. The speed and discharge volume of the power conversion module are controlled by adjusting the opening of the pressure reducing valve 500. The pressure reducing valve 500 is respectively connected to the water filter 400 and the horizontal water turbine pump 600 through water pipelines.

[0045] Furthermore, the power conversion module and the drainage module constitute a horizontal water turbine pump 600 , including a horizontal water turbine 601 and a horizontal drainage pump 602 , wherein a horizontal water turbine shaft 603 of the horizontal water turbine 601 and a horizontal drainage pump shaft 604 of the horizontal drainage pump 602 are connected via a coupling 605 .

[0046] Furthermore, the monitoring and control module includes several sets of pressure gauges for monitoring the water pressure at key points of the system, including:

[0047] The first pressure gauge 701 is used to monitor the water pressure after the water intake module and before the water purification module;

[0048] A second pressure gauge 702, used to monitor the water pressure after the water purification module and before the pressure regulating module;

[0049] The third pressure gauge 703 is used to monitor the water pressure after the pressure regulating module and at the inlet of the power conversion module;

[0050] A fourth pressure gauge 704, used to monitor the water pressure at the outlet of the power conversion module;

[0051] The fifth pressure gauge 705 is used to monitor the water pressure at the outlet of the drainage module.

[0052] Preferably, by analyzing the decrease in the water pressure value measured by the pressure gauge 701, the staff can determine whether the water intake trash rack 200 is blocked, and purge the water intake trash rack 200 as needed. By comparing the difference in the water pressure values ​​measured by the pressure gauge 701 and the pressure gauge 702, the staff can determine whether the water filter 400 is blocked, and clear the water filter 400 as needed. By observing the reading of the water pressure value measured by the pressure gauge 703, the staff can determine whether the pressure reducing valve 500 is adjusted in place.

[0053] Furthermore, the monitoring and control module also includes a flow signaler for monitoring the drainage conditions of the power conversion module and the drainage module, specifically including:

[0054] The first flow signaler 801 is used to monitor the drainage of the power conversion module;

[0055] The second flow signaler 802 is used to monitor the drainage condition of the drainage module.

[0056] Preferably, by observing the indication of the flow signal indicator 801, the staff can judge whether the water discharge of the horizontal turbine 601 is smooth when it is working, and whether the check valve 901 is tightly closed when the horizontal turbine 601 is not working. By observing the indication of the flow signal indicator 802, the staff can judge whether the water discharge of the horizontal drainage pump 602 is smooth when it is working, and whether the check valve 902 is tightly closed when the horizontal drainage pump 602 is not working.

[0057] Furthermore, the monitoring and control module also includes a check valve, which is used to prevent the power conversion module and the drainage module from reversing when they are not working, specifically including:

[0058] The first check valve 901 is used to prevent the power conversion module from reversing when it is not working;

[0059] The second check valve 902 is used to prevent the drainage module from reversing when it is not working.

[0060] Furthermore, the monitoring and control module also includes several groups of manual ball valves, specifically including:

[0061] A first manual ball valve 1001, used to control the purge airflow of the water intake module;

[0062] The second manual ball valve 1002 and the third manual ball valve 1003 are used to control the water inlet and outlet of the water purification module;

[0063] The fourth manual ball valve 1004 and the fifth manual ball valve 1005 are used to control the water inlet and outlet of the pressure regulating module;

[0064] The sixth manual ball valve 1006 and the seventh manual ball valve 1007 are used to control the water inlet and outlet of the power conversion module and the drainage module.

[0065] Preferably, the horizontal water turbine 601 can be prevented from reversing when not working by automatically closing the check valve 901, and the horizontal drainage pump 602 can be prevented from reversing when not working by automatically closing the check valve 902. The manual ball valve 1001 is opened or closed to connect or disconnect the airflow path when the water intake trash rack 200 is purged. By closing the manual ball valve 1002, the manual ball valve 1003, the manual ball valve 1006 and the manual ball valve 1007, the staff can inspect and maintain the entire system. By closing the manual ball valve 1003 and the manual ball valve 1004, the staff can inspect and maintain the water filter 400. By closing the manual ball valve 1004 and the manual ball valve 1005, the staff can inspect and maintain the pressure reducing valve 500. By closing the manual ball valve 1005, the manual ball valve 1006 and the manual ball valve 1007, the staff can inspect and maintain the horizontal water turbine pump 600 and its ancillary equipment.

[0066] Furthermore, the monitoring and control module also includes an intelligent control component for:

[0067] Automatically adjust the opening of the pressure reducing valve according to the data of the pressure gauge and flow indicator;

[0068] When the trash rack or water filter at the water intake is detected to be blocked, the purge or cleaning program is automatically started;

[0069] Automatically control the start and stop of the horizontal turbine pump according to the water level of the leakage collection well;

[0070] When the system is abnormal, protective measures are automatically executed and an alarm signal is issued.

[0071] It should be noted that by arranging the trash rack 200 and the water filter 400 as two floating barriers, the quality of the pressure water entering the pressure reducing valve 500 and the horizontal turbine 601 is greatly improved, the problem of blockage of the pressure reducing valve 500 and the horizontal turbine 601 is effectively reduced, and the system operation stability is significantly enhanced. By arranging the pressure reducing valve 500, it is only necessary to adjust its opening size to achieve the control of the speed of the horizontal turbine pump 600, and then to achieve the control of the displacement size, which is convenient to operate and reliable. The application of the horizontal turbine pump 600 in the specific working occasions of the medium and high head hydropower station not only opens up a new way to utilize the water energy of the hydropower station, but also directly eliminates the major safety hazard of the leakage drainage system under the existing technology being unable to provide services due to power outages. It is a beneficial measure to greatly improve the safe and sustainable operation of the hydropower station. When the system is working, pressurized water is introduced from the water diversion pressure steel pipe 100, filtered through the water intake trash rack 200 and the water filter 400 in turn, and transported to the pressure reducing valve 500 for pressure reduction. The water after pressure reduction can drive the horizontal turbine 601 to rotate, and then transmit power through the horizontal turbine shaft 603, the coupling 605, and the horizontal drainage pump shaft 604 to drive the horizontal drainage pump 602 to rotate, thereby pumping the water accumulated in the leaking water collection well to the tailwater.

[0072] When in use, the staff can use the hydrodynamic leakage drainage system normally according to the following steps: Confirm that the hydrodynamic leakage drainage system is in normal standby state. That is, check that the manual ball valves 1001, 1005, 1006, and 1007 are in the closed state, check that the manual ball valves 1002, 1003, and 1004 are in the fully open state, and check that the water pressure values ​​measured by the pressure gauges 701, 702, and 703 are normal. Fully open the manual ball valves 1006 and 1007, and check that the water pressure values ​​measured by the pressure gauges 704 and 705 are normal.

[0073] Adjust the opening of the pressure reducing valve 500 until the water pressure value measured by the pressure gauge 703 reaches the normal working pressure value. Slowly fully open the manual ball valve 1005, check that the horizontal water turbine pump starts and runs normally, check that the flow signal indicators 801 and 802 indicate normally, and check that the water pressure values ​​measured by the pressure gauges 704 and 705 are normal. When the water level of the leaking water collection well drops to the stop water level, slowly close the manual ball valve 1005, and after the horizontal water turbine pump stops, fully close the manual ball valves 1006 and 1007.

[0074] It should be noted that, in order to reduce operations, the staff can decide whether the manual ball valves 1006 and 1007 should always be kept in a fully open state according to actual conditions.

[0075] In summary, the present invention realizes continuous drainage in the event of a power outage in the entire plant by utilizing the hydropower resources of the hydropower station itself, effectively solves the problem that traditional electric-driven pumps cannot work during power outages, and significantly improves the safety of the hydropower station. The multi-stage filtration and pressure regulation design not only protects the core equipment and extends the life of the system, but also achieves precise control of the drainage volume, improving the adaptability and efficiency of the system. Through the horizontal turbine pump, the direct conversion of hydraulic energy to mechanical energy is achieved, the energy conversion process is simplified, and the energy utilization efficiency is improved. Through a comprehensive monitoring and control module, the automation level and response speed of the system are greatly improved, the manpower requirements are reduced, and the safety and reliability of the system are enhanced.

[0076] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0077] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0078] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A hydrodynamic leakage drainage system for a medium-high head hydropower station, characterized by: include, Water intake module, used to introduce pressurized water from the water diversion penstock of the hydropower station; A water purification module, used for filtering impurities in the pressurized water; A pressure regulating module, used for regulating the pressure of the pressurized water; A power conversion module, used for converting the hydraulic energy of the pressurized water into mechanical energy; A drainage module, used for draining the water from the seepage water collection well by utilizing the mechanical energy; The monitoring and control module is used to monitor the system operating status and control the operation of each system component.

2. The hydrodynamic leakage drainage system for a medium-high head hydropower station according to claim 1, characterized in that: The water intake module comprises a water diversion penstock (100), a water intake trash rack (200) connected to one end of the water diversion penstock (100), and a purge pipeline (300) for cleaning the water intake trash rack (200), wherein the water intake trash rack (200) is connected to the water diversion penstock (100) via a flange, and a flexible joint (301) of the purge pipeline (300) is connected to a gas system via a hose.

3. The hydrodynamic leakage drainage system for a medium-high head hydropower station according to claim 2, characterized in that: The water purification module comprises a water filter (400) connected to the water intake module. The water intake module and the water filter (400) constitute two barriers to prevent drift, thereby improving the quality of water entering the pressure regulation module and the power conversion module. The water filter (400) is respectively connected to the water intake trash rack (200) and the pressure reducing valve (500) through water pipelines.

4. The hydrodynamic leakage drainage system for a medium-high head hydropower station according to claim 3, characterized in that: The pressure regulating module comprises a pressure reducing valve (500) connected to the water purification module, and is used to adjust the water pressure entering the power conversion module. The speed and the amount of water discharged from the power conversion module are controlled by adjusting the opening of the pressure reducing valve (500). The pressure reducing valve (500) is respectively connected to the water filter (400) and the horizontal water turbine pump (600) through water pipelines.

5. The hydrodynamic leakage drainage system for a medium-high head hydropower station according to claim 4, characterized in that: The power conversion module and the drainage module constitute a horizontal water turbine pump (600), including a horizontal water turbine (601) and a horizontal drainage pump (602), wherein a horizontal water turbine rotating shaft (603) of the horizontal water turbine (601) and a horizontal drainage pump rotating shaft (604) of the horizontal drainage pump (602) are connected via a coupling (605).

6. The hydrodynamic leakage drainage system for a medium-high head hydropower station according to claim 5, characterized in that: The monitoring and control module includes several groups of pressure gauges for monitoring the water pressure at key points of the system, including: A first pressure gauge (701), used to monitor the water pressure after the water intake module and before the water purification module; A second pressure gauge (702) for monitoring the water pressure after the water purification module and before the pressure regulating module; A third pressure gauge (703) for monitoring the water pressure after the pressure regulating module and at the inlet of the power conversion module; A fourth pressure gauge (704) for monitoring the water pressure at the outlet of the power conversion module; The fifth pressure gauge (705) is used to monitor the water pressure at the outlet of the drainage module.

7. The hydrodynamic leakage drainage system for a medium-high head hydropower station according to claim 6, characterized in that: The monitoring and control module also includes a flow signaler for monitoring the drainage conditions of the power conversion module and the drainage module, specifically including: A first flow signaler (801), used to monitor the drainage condition of the power conversion module; The second flow signaler (802) is used to monitor the drainage condition of the drainage module.

8. The hydrodynamic leakage drainage system for a medium-high head hydropower station according to claim 7, characterized in that: The monitoring and control module also includes a check valve for preventing the power conversion module and the drainage module from reversing when not in operation, specifically including: A first check valve (901) is used to prevent the power conversion module from reversing when not in operation; The second check valve (902) is used to prevent the drainage module from reversing when it is not working.

9. The hydrodynamic leakage drainage system for a medium-high head hydropower station according to claim 8, characterized in that: The monitoring and control module also includes several groups of manual ball valves, specifically including: A first manual ball valve (1001), used to control the purge air flow of the water intake module; The second manual ball valve (1002) and the third manual ball valve (1003) are used to control the water inlet and outlet of the water purification module; The fourth manual ball valve (1004) and the fifth manual ball valve (1005) are used to control the water inlet and outlet of the pressure regulating module; The sixth manual ball valve (1006) and the seventh manual ball valve (1007) are used to control the water inlet and outlet of the power conversion module and the drainage module.

10. The hydrodynamic leakage drainage system for a medium-high head hydropower station according to claim 9, characterized in that: The monitoring and control module also includes an intelligent control component for: Automatically adjust the opening of the pressure reducing valve according to the data of the pressure gauge and flow indicator; When the trash rack or water filter at the water intake is detected to be blocked, the purge or cleaning program is automatically started; Automatically control the start and stop of the horizontal turbine pump according to the water level of the leakage collection well; When the system is abnormal, protective measures are automatically executed and an alarm signal is issued.

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