Hydroelectric power system

Abstract

The present application relates to the technical field of hydroelectric power generation and discloses a water turbine power generation system, wherein a wind tunnel is connected with a water turbine chamber through a foundation pit, a water turbine is connected with a generator located in the wind tunnel to drive the generator to generate electricity. An air cooler is arranged in the wind tunnel, the air cooler is connected with a cooling water pipe, and the cooling water pipe is connected with the water turbine through the foundation pit. A condensate water collecting device is arranged in the wind tunnel, the condensate water collecting device is located below the air cooler, the condensate water collecting device is provided with a through hole, the cooling water pipe is arranged in the through hole, the condensate water collecting device is provided with a water collecting tank, and the outer side wall of the air cooler is located between the outer end wall and the inner end wall of the water collecting tank. The water turbine power generation system can collect condensate water, avoid moisture in the wind tunnel and prevent the condensate water from flowing into the water turbine chamber, so as to increase the insulation performance and service life of the electric appliance and avoid abnormal shutdown of the water turbine unit. After the water turbine power generation system stops running, the water in the cooling water pipe is emptied, and the safety hazard is eliminated.

Description

Technical Field

[0001] This invention relates to the field of hydropower technology, and more specifically to a hydropower generation system. Background Technology

[0002] A hydro-turbine generator set generates electricity by having a turbine drive a generator.

[0003] However, the hydro-generator units in the relevant technologies often experience abnormal shutdowns, and the wind tunnel of the unit is relatively humid, resulting in poor insulation performance and service life of the electrical components. Furthermore, the air coolers in the relevant technologies draw water directly from the dam, and after the hydro-generator system stops operating, water remains in the cooling water pipes. The air coolers are prone to failure due to prolonged contact with water, posing a safety hazard. Summary of the Invention

[0004] This invention is based on the inventor's discoveries and understanding of the following facts and problems:

[0005] Most hydro-generator units use air coolers for cooling. During normal operation, the heat exchange in the casing, fins, and other parts of the cooler produces condensate. As the condensate accumulates, it flows into the wind tunnel foundation pit, causing the air inside the wind tunnel to become humid. This reduces the insulation performance of electrical equipment and affects its service life. If the condensate flows into the turbine room through the gaps in the lower frame and into the secondary equipment control cabinet or onto the secondary control components, it can cause short circuits. If this happens during unit operation, it can lead to an abnormal shutdown of the unit.

[0006] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, the present invention proposes a hydroelectric power generation system capable of collecting condensate, preventing wind tunnel dampness and preventing condensate from flowing into the turbine room, thereby increasing the insulation performance and service life of electrical components and preventing abnormal shutdowns of the turbine unit. Furthermore, after the hydroelectric power generation system stops operating, the water in the cooling water pipes is drained, eliminating safety hazards.

[0007] The hydroelectric power generation system of the present invention includes a turbine room, a wind tunnel, an air cooler, and a condensate collection device. The turbine room houses a control cabinet and a turbine, with the control cabinet connected to the turbine. The wind tunnel is located directly above the turbine room and is connected to the turbine room via a foundation pit. A generator is installed in the wind tunnel, and the turbine is connected to the generator to drive it to generate electricity. The air cooler is located in the wind tunnel and is connected to a cooling water pipe that passes through the foundation pit and connects to the turbine. The condensate collection device is located inside the wind tunnel, below the air cooler. The condensate collection device has a through-hole through which the cooling water pipe passes. The condensate collection device also has a collection tank, and the outer wall of the air cooler is located between the outer and inner end walls of the collection tank in the inward-outward direction.

[0008] The hydroelectric power generation system of this invention can collect condensate, preventing wind tunnel dampness and condensate from flowing into the turbine room, thereby increasing the insulation performance and service life of electrical components and preventing abnormal shutdowns of the turbine unit. In this embodiment of the hydroelectric power generation system, when the hydroelectric power generation system is shut down, the turbine is separated from the water, and the cooling water pipes are emptied. This ensures that when the hydroelectric power generation system is running, the cooling water pipes supply water to the air cooler; when the hydroelectric power generation system is stopped, the cooling water pipes are emptied, preventing air cooler malfunctions and eliminating safety hazards. Furthermore, when the hydroelectric power generation system is shut down, the air cooler stops contacting water, further preventing wind tunnel dampness.

[0009] Optionally, the condensate collection device includes multiple collection sections, the air cooler includes multiple outer walls, the multiple collection sections are located opposite each other in the vertical direction and below the multiple outer walls in the internal and external direction, each outer wall is located between the outer end wall and the inner end wall of the corresponding collection section, and the multiple collection sections are connected in sequence to form the water collection tank.

[0010] Optionally, the air cooler includes a first outer side wall, a second outer side wall, a third outer side wall, and a fourth outer side wall. The first outer side wall and the third outer side wall are arranged opposite each other in a first horizontal direction, and the second outer side wall and the fourth outer side wall are arranged opposite each other in a second horizontal direction. The first horizontal direction and the second horizontal direction are perpendicular to each other, and the first outer side wall, the second outer side wall, the third outer side wall, and the fourth outer side wall are connected end to end in sequence. The condensate collection device includes a first collection section, a second collection section, a third collection section, and a fourth collection section. The first collection section is located below the first outer wall in the vertical direction, and the first outer wall is located between the outer and inner end walls of the first collection section in the first horizontal direction. The second collection section is located below the second outer wall in the vertical direction, and the second outer wall is located between the outer and inner side walls of the second collection section in the second horizontal direction. The third collection section is located below the third outer wall in the vertical direction, and the third outer wall is located between the outer and inner side walls of the third collection section in the first horizontal direction. The fourth collection section is located below the fourth outer wall in the vertical direction, and the fourth outer wall is located between the outer and inner side walls of the fourth collection section in the second horizontal direction. The first, second, third, and fourth collection sections are connected in sequence to form the water collection tank.

[0011] Optionally, the tops of the first collecting segment, the second collecting segment, the third collecting segment, and the fourth collecting segment are flush, and the depth of each of the second collecting segment and the fourth collecting segment is less than the depth of the first collecting segment and the third collecting segment.

[0012] Optionally, the cooling water pipe includes a cooling inlet pipe for water intake and a cooling outlet pipe for drainage. The cooling inlet pipe and the cooling outlet pipe pass through the foundation pit and are connected to the water turbine. Both the cooling inlet pipe and the cooling outlet pipe are connected to the air cooler via connecting flanges. The condensate collection device is located below the connecting flanges.

[0013] Optionally, a portion of the condensate collection device covers a portion of the pit, and both the cooling inlet pipe and the cooling outlet pipe pass through the through hole.

[0014] Optionally, the top cover of the water turbine is provided with a liquid inlet, which is connected to the cooling liquid inlet pipe. The water turbine includes a bucket valve, which is opened and closed to control the water flow in contact with the turbine wheel.

[0015] Optionally, the surface of the water collection tank is coated with an epoxy primer layer, and an epoxy topcoat layer is coated on the surface of the epoxy primer layer.

[0016] Optionally, the air cooler is provided with an exhaust valve, and the condensate collection device further includes an exhaust pipe, one end of which is sleeved on the exhaust valve, and the other end of which is located in the water collection tank.

[0017] Optionally, the generator is provided with a stator drain hole, and the condensate collection device is provided with a stator drain pipe, one end of which is connected to the stator drain hole, and the other end of which is located in the water collection tank. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an air cooler and a condensate collection device according to an embodiment of the present invention.

[0019] Figure 2 This is a left view of the condensate collection device according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of a hydroelectric power generation system according to an embodiment of the present invention.

[0021] Figure label:

[0022] 100. Hydropower generation system; 1. Condensate collection device; 2. Cooling water pipes; 3. Air cooler; 4. Turbine room; 5. Wind tunnel; 6. Turbine; 7. Generator; 8. Control cabinet;

[0023] 11. Water collection tank; 12. Through hole; 13. Drain pipe;

[0024] 111. Collection section; 112. Outer end wall; 113. Inner end wall; 114. Drainage hole;

[0025] 1111, First collection segment; 1112, Second collection segment; 1113, Third collection segment; 1114, Fourth collection segment;

[0026] 21. Cooling liquid inlet pipe; 22. Cooling liquid discharge pipe;

[0027] 31. Outer wall; 32. Connecting flange;

[0028] 311. First lateral wall; 312. Second lateral wall; 313. Third lateral wall; 314. Fourth lateral wall;

[0029] 41. Liquid inlet; 42. Tank valve; 43. Impeller;

[0030] 71. Stator drain hole. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] The following describes a hydroelectric power generation system 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0033] like Figure 1 As shown, the hydroelectric power generation system 100 of this embodiment includes a turbine room 4, a wind tunnel 5, an air cooler 3, and a condensate collection device 1. A control cabinet 8 and a turbine 6 are installed inside the turbine room 4, and the control cabinet 8 and the turbine 6 are connected. The wind tunnel 5 is located directly above the turbine room 4 and is connected to the turbine room 4 via a foundation pit. A generator 7 is installed in the wind tunnel 5, and the turbine 6 is connected to the generator 7 to drive the generator 7 to generate electricity. The air cooler 3 is installed in the wind tunnel 5 and is connected to a cooling water pipe 2, which passes through the foundation pit and connects to the turbine 6. The condensate collection device 1 is installed inside the wind tunnel 5, located below the air cooler 3. The condensate collection device 1 has a through hole 12 through which the cooling water pipe 2 passes. The condensate collection device 1 has a water collection tank 11, and the outer wall 31 of the air cooler 3 is located between the outer end wall 112 and the inner end wall 113 of the water collection tank 11 in the inward-outward direction.

[0034] The turbine 6 located in the turbine room 4 drives the generator 7 located in the wind tunnel 5 to generate electricity. The air cooler 3 draws water from the turbine 6 through the cooling water pipe 2 for cooling. The air cooler 3 cools the generator 7 located in the wind tunnel 5 by air cooling.

[0035] When the hydropower generation system 100 is started, the turbine 6 comes into contact with water to drive the generator 7 to rotate. The cooling water pipe 2 is connected to the turbine 6 to draw water, so that the air cooler 3 cools the generator 7.

[0036] When the hydropower generation system 100 is shut down, the turbine 6 is separated from the water, and the cooling water pipe 2 is emptied. This ensures that when the hydropower generation system 100 is running, the cooling water pipe 2 supplies water to the air cooler 3, and when the hydropower generation system 100 stops running, the cooling water pipe 2 is emptied to prevent the air cooler 3 from malfunctioning and to eliminate safety hazards.

[0037] In addition, when the hydroelectric power generation system 100 is shut down, the air cooler 3 stops contacting the water, which increases the service life of the air cooler 3.

[0038] When the air cooler 3 is working, the condensate generated on the outer wall accumulates and flows down the outer wall 31. Since the outer wall 31 of the air cooler 3 is located between the outer end wall 112 and the inner end wall 113 of the water collection tank 11 in the inward and outward directions, the condensate flows down the outer wall 31 and falls into the water collection tank 11 and is collected by the water collection tank 11. This prevents the wind tunnel 5 from getting damp, thereby increasing the insulation performance and service life of the electrical components. It also prevents the condensate from flowing into the turbine room 4 and into the control cabinet 8 inside the turbine room 4, thereby preventing the turbine 6 from experiencing abnormal shutdown.

[0039] In addition, when the hydroelectric power generation system 100 is shut down, the air cooler 3 stops contacting water, further preventing the wind tunnel 5 from becoming damp.

[0040] The hydroelectric power generation system 100 of this embodiment can collect condensate, preventing the wind tunnel 5 from becoming damp and preventing condensate from flowing into the turbine room 4, thereby increasing the insulation performance and service life of electrical components and preventing abnormal shutdowns of the turbine 6 unit. When the hydroelectric power generation system 100 is shut down, the turbine 6 is separated from the water, and the cooling water pipe 2 is emptied. This ensures that when the hydroelectric power generation system 100 is running, the cooling water pipe 2 supplies water to the air cooler 3; when the hydroelectric power generation system 100 is not running, the cooling water pipe 2 is emptied, preventing malfunctions of the air cooler 3 and eliminating safety hazards. Furthermore, when the hydroelectric power generation system 100 is shut down, the air cooler 3 stops contacting water, further preventing the wind tunnel 5 from becoming damp.

[0041] like Figure 1 and Figure 2 As shown, in some embodiments, the condensate collection device 1 includes multiple collection sections 111, and the air cooler 3 includes multiple outer walls 31. The multiple collection sections 111 are located opposite each other in the vertical direction below the multiple outer walls 31. Each outer wall 31 is located between the outer end wall 112 and the inner end wall 113 of the corresponding collection section 111 in the inward and outward direction. The multiple collection sections 111 are connected in sequence to form a water collection tank 11.

[0042] Each collection section 111 collects condensate from the corresponding outer wall 31, further preventing the wind tunnel 5 from becoming damp and further preventing condensate from flowing into the turbine room 4, further increasing the insulation performance and service life of the electrical components, and further preventing abnormal shutdowns of the turbine 6 units.

[0043] like Figure 1 , Figure 2 and Figure 3As shown, in some embodiments, the air cooler 3 includes a first outer side wall 311, a second outer side wall 312, a third outer side wall 313, and a fourth outer side wall 314. The first outer side wall 311 and the third outer side wall 313 are arranged opposite each other in a first horizontal direction, and the second outer side wall 312 and the fourth outer side wall 314 are arranged opposite each other in a second horizontal direction. The first horizontal direction and the second horizontal direction are perpendicular to each other, and the first outer side wall 311, the second outer side wall 312, the third outer side wall 313, and the fourth outer side wall 314 are connected end to end in sequence.

[0044] The condensate collection device 1 includes a first collection section 1111, a second collection section 1112, a third collection section 1113, and a fourth collection section 1114. The first collection section 1111 is located below the first outer wall 311 in the vertical direction. The first outer wall 311 is located between the outer end wall 112 and the inner end wall 113 of the first collection section 1111 in the first horizontal direction. The second collection section 1112 is located below the second outer wall 312 in the vertical direction. The second outer wall 312 is located between the outer wall and the inner wall of the second collection section 1112 in the second horizontal direction. The third collecting section 1113 is located below the third outer wall 313 in the vertical direction. The third outer wall 313 is located between the outer wall and the inner wall of the third collecting section 1113 in the first horizontal direction. The fourth collecting section 1114 is located below the fourth outer wall 314 in the vertical direction. The fourth outer wall 314 is located between the outer wall and the inner wall of the fourth collecting section 1114 in the second horizontal direction. The first collecting section 1111, the second collecting section 1112, the third collecting section 1113 and the fourth collecting section 1114 are connected in sequence to form a water collection tank 11.

[0045] The first collection section 1111, the second collection section 1112, the third collection section 1113, and the fourth collection section 1114 collect condensate on the first outer wall 311, the second outer wall 312, the third outer wall 313, and the fourth outer wall 314, further preventing the wind tunnel 5 from becoming damp and further preventing condensate from flowing into the turbine room 4, further increasing the insulation performance and service life of the electrical components, and further preventing abnormal shutdowns of the turbine 6.

[0046] like Figure 1 As shown in the figure, for example, the first horizontal direction is shown at point A, and the second horizontal direction is shown at point B.

[0047] In some embodiments, the top ends of the first collection segment 1111, the second collection segment 1112, the third collection segment 1113, and the fourth collection segment 1114 are flush, and the depth of each of the second collection segment 1112 and the fourth collection segment 1114 is less than the depth of the first collection segment 1111 and the third collection segment 1113.

[0048] Since the depth of each of the second collection section 1112 and the fourth collection section 1114 is less than the depth of the first collection section 1111 and the third collection section 1113, the condensate in the second collection section 1112 and the fourth collection section 1114 flows into the first collection section 1111 and the third collection section 1113. Therefore, when draining the water collection tank 11, only the first collection section 1111 and the third collection section 1113 need to be drained, which improves the drainage efficiency.

[0049] Furthermore, the smaller depth of the second collection section 1112 and the fourth collection section 1114 can also reduce the cost of manufacturing the condensate collection device 1.

[0050] like Figure 1 and Figure 2 As shown, optionally, drainage holes 114 are provided on the first collection section 1111 and the third collection section 1113 to drain water from the first collection section 1111 and the third collection section 1113, thereby draining water from the entire water collection tank 11 and improving drainage efficiency.

[0051] like Figure 1 As shown, in some embodiments, the cooling water pipe 2 includes a cooling liquid inlet pipe 21 for water intake and a cooling liquid outlet pipe 22 for drainage. The cooling liquid inlet pipe 21 and the cooling liquid outlet pipe 22 pass through the foundation pit and are connected to the water turbine 6. Both the cooling liquid inlet pipe 21 and the cooling liquid outlet pipe 22 are connected to the air cooler 3 through connecting flanges. The condensate collection device 1 is located below the connecting flanges to prevent the water collection tank 11 from blocking the connecting flanges of the cooling liquid inlet pipe 21 and the cooling liquid outlet pipe 22, and to facilitate the installation and disassembly of the connecting flanges of the cooling liquid inlet pipe 21 and the cooling liquid outlet pipe 22.

[0052] Cooling inlet pipe 21 is connected to water turbine 6 to draw water through water turbine 6, and cooling outlet pipe 22 is connected to water turbine 6 to drain water through water turbine 6.

[0053] In some embodiments, a portion of the condensate collection device 1 covers a portion of the foundation pit to further prevent condensate from flowing into the turbine chamber 4 and to further prevent abnormal shutdown of the turbine group 6. Both the cooling inlet pipe 21 and the cooling outlet pipe pass through the through hole 12.

[0054] like Figure 1 As shown, optionally, the first collecting segment 1111, the second collecting segment 1112, the third collecting segment 1113 and the fourth collecting segment 1114 are connected in sequence to form the through hole 12.

[0055] like Figure 1 As shown, in some embodiments, the top cover of the turbine 6 is provided with a liquid inlet 41, which is connected to the cooling liquid inlet pipe 21. The turbine 6 includes a bucket valve 42, which is opened and closed to control the water flow in contact with the turbine wheel 43.

[0056] After the hydropower generation system 100 stops operating, the barrel valve 42 is closed, the turbine 43 of the turbine 6 is separated from the water, and the top cover of the turbine 6 is separated from the water. In other words, after the turbine 6 is shut down, the water in the cooling inlet pipe 21 is drained to prevent the air cooler 3 from malfunctioning and to eliminate safety hazards.

[0057] When the turbine 6 power generation system is running, the barrel valve 42 is opened, the turbine wheel 43 of the turbine 6 comes into contact with water to start working, the top cover of the turbine 6 comes into contact with water, and the water enters the air cooler 3 through the liquid inlet 41 and the cooling liquid inlet pipe to make the air cooler 3 work.

[0058] In addition, after the hydropower generation system 100 stops operating, the water in the cooling inlet pipe 21 is drained, which further prevents the wind tunnel 5 from becoming damp and further prevents condensate from flowing into the turbine room 4, further increases the insulation performance and service life of the electrical components, and further prevents abnormal shutdown of the turbine 6 group.

[0059] like Figure 3 As shown in the figure, for example, the direction of water flow is as shown at point C.

[0060] In some embodiments, the surface of the water collection tank 11 is coated with an epoxy primer layer, and an epoxy topcoat layer is coated on the surface of the epoxy primer layer to prevent corrosion of the water collection tank 11.

[0061] In some embodiments, the air cooler 3 is provided with an exhaust valve, and the condensate collection device 1 further includes an exhaust pipe, one end of which is sleeved on the exhaust valve, and the other end of which is located in the water collection tank 11.

[0062] The gas discharged from the exhaust valve contains water vapor. The gas discharged from the exhaust valve is guided into the water collection tank 11 through the exhaust pipe to further prevent the wind tunnel 5 from becoming damp and to further increase the insulation performance and service life of the electrical appliances.

[0063] In some embodiments, the generator 7 is provided with a stator drain hole 71, and the condensate collection device 1 is provided with a stator drain pipe. One end of the stator drain pipe is connected to the stator drain hole 71, and the other end of the stator drain pipe is located in the water collection tank 11.

[0064] The water discharged from the stator drain hole 71 is guided into the water collection tank 11 through the stator drain pipe, which further prevents the wind tunnel 5 from getting damp and further increases the insulation performance and service life of the electrical appliances.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 simplifying the description, and are not intended to 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.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A hydroelectric power generation system, characterized in that, include: A turbine room, wherein a control cabinet and a turbine are installed, and the control cabinet and the turbine are connected. A wind tunnel is located directly above the turbine room. The wind tunnel is connected to the turbine room via a foundation pit. A generator is installed inside the wind tunnel, and the turbine is connected to the generator to drive the generator to generate electricity. An air cooler is installed in the wind tunnel and is connected to a cooling water pipe. The cooling water pipe passes through the foundation pit and is connected to the water turbine. The air cooler draws water from the water turbine through the cooling water pipe for cooling and cools the generator located in the wind tunnel by air cooling. A condensate collection device is provided inside the wind tunnel and located below the air cooler. The condensate collection device has a through hole through which the cooling water pipe passes. The condensate collection device has a water collection tank, and the outer wall of the air cooler is located between the outer end wall and the inner end wall of the water collection tank in the inward and outward direction. The cooling water pipe includes a cooling liquid inlet pipe for water intake and a cooling liquid outlet pipe for water drainage. The cooling liquid inlet pipe and the cooling liquid outlet pipe pass through the foundation pit and are connected to the water turbine. Both the cooling liquid inlet pipe and the cooling liquid outlet pipe are connected to the air cooler through connecting flanges. The condensate collection device is located below the connecting flanges. A portion of the condensate collection device covers a portion of the foundation pit to prevent condensate from flowing into the turbine chamber; both the cooling inlet pipe and the cooling outlet pipe pass through the through hole. The top cover of the water turbine is provided with a liquid inlet, which is connected to the cooling liquid inlet pipe. The water turbine includes a barrel valve and a turbine wheel. The barrel valve is opened and closed to control the water flow in contact with the turbine wheel. After the water turbine power generation system stops operating, the barrel valve is closed, the turbine wheel is separated from the water, the top cover of the water turbine is separated from the water, and the water in the cooling liquid inlet pipe is drained after the water turbine is shut down. The generator is provided with a stator drain hole, and the condensate collection device is provided with a stator drain pipe. One end of the stator drain pipe is connected to the stator drain hole, and the other end of the stator drain pipe is located in the water collection tank.

2. The hydroelectric power generation system according to claim 1, characterized in that, The condensate collection device includes multiple collection sections, and the air cooler includes multiple outer walls. The multiple collection sections are located opposite each other in the vertical direction below the multiple outer walls. Each outer wall is located between the outer end wall and the inner end wall of the corresponding collection section in the inward and outward direction. The multiple collection sections are connected in sequence to form the water collection tank.

3. The hydroelectric power generation system according to claim 2, characterized in that, The air cooler includes a first outer side wall, a second outer side wall, a third outer side wall, and a fourth outer side wall. The first outer side wall and the third outer side wall are arranged opposite each other in a first horizontal direction, and the second outer side wall and the fourth outer side wall are arranged opposite each other in a second horizontal direction. The first horizontal direction and the second horizontal direction are perpendicular to each other, and the first outer side wall, the second outer side wall, the third outer side wall, and the fourth outer side wall are connected end to end in sequence. The condensate collection device includes a first collection section, a second collection section, a third collection section, and a fourth collection section. The first collection section is located below the first outer wall in the vertical direction, and the first outer wall is located between the outer and inner end walls of the first collection section in the first horizontal direction. The second collection section is located below the second outer wall in the vertical direction, and the second outer wall is located between the outer and inner end walls of the second collection section in the second horizontal direction. The third collection section is located below the third outer wall in the vertical direction, and the third outer wall is located between the outer and inner end walls of the third collection section in the first horizontal direction. The fourth collection section is located below the fourth outer wall in the vertical direction, and the fourth outer wall is located between the outer and inner end walls of the fourth collection section in the second horizontal direction. The first, second, third, and fourth collection sections are connected in sequence to form the water collection tank.

4. The hydroelectric power generation system according to claim 3, characterized in that, The tops of the first collection segment, the second collection segment, the third collection segment, and the fourth collection segment are flush, and the depth of each of the second collection segment and the fourth collection segment is less than the depth of the first collection segment and the third collection segment.

5. The hydroelectric power generation system according to claim 1, characterized in that, The surface of the water collection tank is coated with an epoxy primer layer, and the surface of the epoxy primer layer is coated with an epoxy topcoat layer.

6. The hydroelectric power generation system according to claim 1, characterized in that, The air cooler is equipped with an exhaust valve, and the condensate collection device also includes an exhaust pipe, one end of which is fitted onto the exhaust valve, and the other end of which is located in the water collection tank.

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