Fixed-depth surface water taking device for hydropower station

Abstract

The invention relates to the technical field of water taking, and discloses a hydropower station fixed depth surface water taking device which comprises a power station reservoir dam body, a water inlet assembly and an auxiliary assembly, the water inlet assembly is installed at the right end of the power station reservoir dam body, and the auxiliary assembly is connected to the right end of the water inlet assembly; wherein the water inlet assembly comprises a generator assembly, a water taking pipe and a floating island, the generator assembly is installed in a dam body of a power station reservoir, one end of the water taking pipe is communicated with the water inlet end of the generator assembly, and the floating island is installed at the upper end of the other end of the water taking pipe; the stainless steel stand column is arranged on the right side of the water taking pipe and sleeved with the floating ring. The problem that the water taking temperature difference at the bottom of the hydropower station causes adverse effects on downstream aquatic organisms is solved, and the adverse effects of the temperature difference on the aquatic organisms can be reduced to the maximum extent through the fixed-depth surface water taking device.

Description

Technical Field

[0001] This invention relates to the field of water intake technology, and in particular to a fixed-depth surface water intake device for hydropower stations. Background Technology

[0002] After a century of development, my country's hydropower industry has maintained its position as the world's largest in terms of cumulative installed capacity since 2004, reaching 430.55 million kilowatts as of September 2024. Hydropower occupies an important position in the overall power structure, accounting for 12.8% of the country's total power generation in 2023, and rising to 14.2% in the first three quarters of 2024. As an important part of the green and low-carbon energy transition, the development of conventional hydropower will continue in the future, with a focus shifting to the southwest region, promoting the commencement of hydropower projects in the upper reaches of the Jinsha River and the middle reaches of the Yalong River.

[0003] However, the continuous development of cascade hydropower stations has adversely affected aquatic ecosystems, transforming natural rivers into cascade reservoirs and causing significant changes in hydrology, sediment, and water temperature, posing a great challenge to aquatic organisms such as fish. In particular, the headwater regulating reservoirs typically have deep water levels exceeding 4 meters, resulting in water stratification. The flow and heat exchange between the bottom and surface waters are significantly reduced. During the winter and summer seasons with large temperature fluctuations, the surface water temperature differs significantly from the outside temperature. Aquatic organisms, having adapted to the high summer and low winter temperatures through tens or even hundreds of millions of years of purification before the power station's construction, have had this completely reversed after the power station's construction, especially during the seasons of large temperature differences, causing disastrous impacts on the reproduction and even survival of aquatic organisms such as fish.

[0004] To minimize the aforementioned impacts, publicly disclosed technologies have explored and researched various water intake methods. The traditional stacked-beam gate method is a common technique for bottom-level water intake in power plants. This method uses hoisting machinery to stack integral flat gates piece by piece to mitigate the effects of low-temperature water. However, it is cumbersome to operate, time-consuming to open and close, and has a slow water temperature recovery response, failing to achieve the desired mitigation effect in a short time. In recent years, ecological protection requirements have gradually increased. To address this issue, power plant construction and design are increasingly considering avoiding bottom-level water intake methods. To overcome the shortcomings of the traditional stacked-beam gate method, a new stratified water intake process has emerged. Taking the Mardang Hydropower Station as an example, it employs an industry-first stratified vertical guide vane valve. This gate structure can quickly and effectively mitigate the potential adverse effects of low-temperature water discharge from the reservoir on the downstream ecosystem. By stacking and installing layers of gates resembling vertical louvers at the intake, engineers can flexibly control the opening and closing of any layer of gates within 5 minutes, thereby precisely controlling the water flow from a specific layer. While this method represents a first step in reducing the impact of low-temperature water and allows for stratified water extraction, its operation and maintenance are relatively complex, the water extraction depth cannot be kept constant, and its application scenarios are not very widespread. Therefore, it is necessary to further improve the existing water extraction methods. Summary of the Invention

[0005] This invention proposes a fixed-depth surface water intake device for hydropower stations, which solves the problems in the prior art and at least provides a useful alternative. To achieve the above objectives, the present invention adopts the following technical solution: A fixed-depth surface water intake device for a hydropower station includes: The power station reservoir dam body; The intake assembly is installed at the right end of the power station reservoir dam; and Auxiliary component, connected to the right end of the water inlet component; The water inlet assembly includes: The generator assembly is installed inside the power station's reservoir dam. The water intake pipe is connected at one end to the water inlet of the generator set; and The floating island is installed at the upper end of the other end of the water intake pipe; The auxiliary components include: Stainless steel column, located on the right side of the water intake pipe; Floating rings are fitted onto the top of stainless steel columns; The pulley is fixed to the lower end of the floating ring by pulley fixing bolts; A stainless steel cable is wound around a pulley. One end of the stainless steel cable is fixedly connected to the right end of the floating island, and a plumb bob is fixedly installed at the other end of the stainless steel cable.

[0006] Preferably, the water inlet assembly further includes: A fluid universal joint, with its inlet end fixedly connected to one end of a water intake pipe, and its outlet end fixedly connected to the inlet end of a generator set; Mounting bracket, installed at the upper end of the other end of the water intake pipe; and Multiple stainless steel columns are provided, and the multiple stainless steel columns are evenly fixedly installed on the upper end of the mounting frame. The other end of each stainless steel column is fixedly connected to the lower end of the floating island.

[0007] Preferably, the auxiliary component further includes: One end of the drive shaft is fixedly connected to the pulley shaft, and the other end of the drive shaft is connected to a mounting side shell, the bottom of which is fixedly connected to the pulley. Top mounting block, fixedly installed on the upper end of stainless steel column; The testing box is fixedly installed on the top of the mounting block; and The flag is fixedly installed on the top of the testing box.

[0008] Preferably, the auxiliary component further includes: A first detection slot and a second detection slot, wherein the first detection slot is located at the rear end of the top mounting block and the second detection slot is located at the front end of the first detection slot; A connecting block, fixedly installed at the rear end of the mounting side shell, passes through the first detection groove and is inserted into the second detection groove; and A micro-motion sensor is fixedly installed inside the top of the second detection slot, and the sensing end of the micro-motion sensor is fixedly connected to the upper end of the connecting block.

[0009] Preferably, the auxiliary component further includes: The rear end of the drive shaft passes through the front end of the mounting side housing and extends into the interior of the mounting side housing; The driven shaft is mechanically linked above the driving shaft. The front end of the driven shaft passes through the mounting side shell and the detection box in sequence, and extends into the interior of the detection box. The detection shaft is mechanically linked to the upper end of the driven shaft, and the detection shaft is located inside the detection box; An angle sensor is fixedly installed inside the front end of the detection box, and the other end of the detection shaft is fixedly connected to the detection end of the angle sensor. Both the drive shaft and the driven shaft are rotatably connected to the mounting side shell, and the driven shaft is rotatably connected to the detection box.

[0010] Preferably, the auxiliary component further includes: The transmission wheel and the transmission belt are provided. There are two transmission wheels. The two transmission wheels are respectively fixedly mounted on the rear ends of the drive shaft and the driven shaft. The two transmission wheels are connected by the transmission belt. The driving gear and the driven gear are fixedly mounted on the driven shaft and the detection shaft, respectively, and the driving gear and the driven gear mesh with each other.

[0011] Preferably, the auxiliary component further includes: Multiple fixed side plates are provided, and the multiple fixed side plates are fixedly installed in a ring array at the lower end of the floating ring. The fixed side plates are connected to the stainless steel column through the floating ring spring.

[0012] Preferably, the auxiliary component further includes: Two photovoltaic panels are provided, and the two photovoltaic panels are symmetrically fixedly installed at the left and right ends of the testing box. The photovoltaic controller, controller, battery, inverter, alarm, and signal transmitter are all fixedly installed inside the top mounting block; The micro-motion sensor and the angle sensor are both electrically connected to the controller, and the controller is electrically connected to the alarm and the signal transmitter. The solar photovoltaic panel is electrically connected to the photovoltaic controller, the photovoltaic controller is electrically connected to the battery, the battery is electrically connected to the inverter, and the inverter is electrically connected to the micro-motion sensor, the angle sensor, the alarm, and the signal transmitter.

[0013] The beneficial effects of this invention are as follows: This water intake device uses a floating island connected to a water intake pipe via a stainless steel column to control the water inlet of the water intake pipe to maintain a fixed surface depth. In order to stabilize and fix the floating island, it is connected to a stainless steel column. The floating island is connected to the column via a stainless steel cable and is kept in line with the water level by pulleys.

[0014] The water intake device first sets a minimum value for the controller. The micro-motion sensor can collect the weight information of the mounting side shell and pulley through the connecting block and transmit the collected weight information to the controller. The controller converts the weight information into data and compares it with the minimum value. When it is less than or equal to the minimum value, it means that the weight of the mounting side shell and pulley has become extremely small, which means that the plumb weight has separated from the stainless steel cable and the plumb weight needs to be replaced. At this time, the controller sends a command to the alarm, and the alarm can start to sound.

[0015] When the water level changes, the height of the floating island in this water intake device changes, causing the stainless steel cable to change. At this time, the wheel on the pulley rotates under the drive of the stainless steel cable. The rotating wheel drives the drive shaft to rotate through the pulley axle. The rotating drive shaft drives the driven shaft to rotate through two transmission wheels and a transmission belt. The rotating driven shaft rotates through the drive gear and the driven gear, which in turn drives the detection shaft to rotate. The angle sensor can collect the angle information of the detection shaft rotation and transmit it to the controller. The controller converts the angle information into data and transmits it to the staff through a signal transmitter. At this time, the staff can monitor the liquid level in real time, which facilitates the management of the reservoir.

[0016] This invention has the advantages of constant depth and surface water intake, fundamentally solving the problem of low-temperature water impact in power plants. At the same time, it has a simple structure and is easy to maintain. It can be adapted to various water intake scenarios such as downstream power plants, water diversion power plants, and hybrid power plants, providing technical reference for energy development and ecological protection.

[0017] This invention solves the problem of adverse effects of temperature differences in water intake at the bottom of hydropower stations on downstream aquatic organisms. It utilizes a surface water intake device at a fixed depth to minimize the adverse effects of temperature differences on aquatic organisms. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the water intake device proposed in this invention; Figure 2 This is a schematic diagram of the water inlet component in the water intake device proposed in this invention; Figure 3 This is a schematic diagram of the auxiliary components in the water intake device proposed in this invention; Figure 4 This is a partial structural diagram of the auxiliary components in the water intake device proposed in this invention; Figure 5 for Figure 4 An explosion diagram; Figure 6 This is a schematic diagram of the top mounting block in the water intake device proposed in this invention; Figure 7 This is a partial structural side sectional view of the auxiliary components in the water intake device proposed in this invention.

[0019] Numbering on the map: 1. Power station reservoir dam; 2. Intake system; 3. Auxiliary components; 201. Generator set; 202. Fluid universal joint; 203. Water intake pipe; 204. Mounting bracket; 205. Stainless steel column; 206. Floating island; 301. Stainless steel column; 302. Plumb bob counterweight; 303. Pulley; 304. Stainless steel cable; 305. Mounting side shell; 306. Photovoltaic panel; 307. Signal flag; 308. Detection box; 309. Top mounting block; 310. Floating ring; 311. Floating ring spring; 312. Drive shaft; 313. First detection slot; 314. Driven shaft; 315. Drive gear; 316. Micro-motion sensor; 317. Connecting block; 318. Second detection slot; 319. Angle sensor; 320. Driven gear; 321. Transmission belt; 322. Photovoltaic controller; 323. Controller; 324. Battery; 325. Inverter; 326. Alarm; 327. Fixed side plate; 328. Detection shaft. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Reference Figure 1-3 As shown, the hydropower station fixed-depth surface water intake device disclosed in this invention has its outlet end connected to the power station reservoir dam 1, and mainly includes a water intake component 2 and an auxiliary component 3. Both the water intake component 2 and the auxiliary component 3 are installed in the reservoir enclosed by the power station reservoir dam 1.

[0022] The water intake assembly 2 includes a generator set 201, a water intake pipe 203, and a floating island 206. The generator set 201 is installed inside the power station reservoir dam 1. One end of the water intake pipe 203 is connected to the water intake end of the generator set 201, and the other end is suspended by the floating island 206 at a predetermined depth below the water surface of the reservoir.

[0023] Auxiliary component 3 mainly includes a stainless steel column 301, a floating ring 310, a pulley 303, and a stainless steel cable 304. The stainless steel column 301 is installed in the reservoir, near the inlet of the water intake pipe 203. The floating ring 310 is fitted onto the top of the stainless steel column 301. The pulley 303 is fixed to the lower end of the floating ring 310 by fixing bolts. The stainless steel cable 304 is wound around the pulley 303. One end of the stainless steel cable 304 is fixedly connected to the floating island 206, and the other end passes around the pulley 303 and is connected to the plumb weight 302.

[0024] This invention addresses the adverse effects of temperature differences in water intake at the bottom of hydropower stations on downstream aquatic organisms, and can minimize these adverse effects.

[0025] Its specific working principle is: using the floating island 206 to connect to the inlet of the water intake pipe 203, and controlling the inlet of the water intake pipe 203 to be roughly kept at a fixed surface depth of 4m. To ensure the stability and fixation of the floating island 206 as much as possible, the floating island 206 is connected to the stainless steel column 301 by stainless steel cable 304 and kept in line with the water level by pulley 303.

[0026] In this embodiment, refer to Figure 3-5 As shown, the water inlet assembly 2 also includes a fluid universal joint 202, a mounting bracket 204, and stainless steel columns 205. The inlet end of the fluid universal joint 202 is fixedly connected to one end of the water intake pipe 203, and the outlet end of the fluid universal joint 202 is fixedly connected to the water inlet end of the generator set 201. The mounting bracket 204 is installed at the upper part of the water inlet of the water intake pipe 203. Multiple stainless steel columns 205 are provided, and are evenly fixedly installed on the upper end of the mounting bracket 204. The other end of each stainless steel column 205 is fixedly connected to the lower end of the floating island 206.

[0027] The water intake pipe 203, affected by fluctuations in water level, is controlled by the fluid universal joint 202. Once the spray angle is locked in any direction at its adjustable angle, even when sprayed by a high-flow-rate, high-speed centrifugal water mist nozzle (300 liters / minute), it will not loosen or shift due to reaction force. Reservoir water, after passing through the intake pipe 203, enters the gate and then the generator set 201 for power generation. By resolving these issues, the water intake depth can be consistently maintained within 4 meters.

[0028] Reference Figure 4-7 As shown, auxiliary component 3 also includes a drive shaft 312, a top mounting block 309, a detection box 308, and a lookout flag 307. One end of the drive shaft 312 is fixedly connected to a pulley 303, so that when the pulley 303 rotates, it drives the drive shaft 312 to rotate. The other end of the drive shaft 312 is rotatably connected to the bottom of the mounting side shell 305. The middle of the mounting side shell 305 is connected to the top mounting block 309, which is fixedly mounted on the upper end of the stainless steel column 301. Spatially, the top mounting block 309 is also located above the floating ring 310. The detection box 308 is fixedly mounted on the upper end of the top mounting block 309, and the lookout flag 307 is fixedly mounted on the upper end of the detection box 308.

[0029] Further, see Figure 6As shown, the auxiliary component 3 also includes a first detection groove 313, a second detection groove 318, a connecting block 317, and a micro-motion sensor 316. The first detection groove 313 is opened at the front end of the top mounting block 309, and the second detection groove 318 is opened at the rear end of the first detection groove 313. One side of the connecting block 317 is fixedly installed on the mounting side shell 305, and the other side of the connecting block 317 passes through the first detection groove 313 and is inserted into the second detection groove 318. The micro-motion sensor 316 is fixedly installed at the top end inside the second detection groove 318, and the contact end of the micro-motion sensor 316 abuts against the upper end of the connecting block 317 to collect the displacement of the connecting block 317 during micro-motion.

[0030] It should be noted that there is a gap between the second detection groove 318 and the connecting block 317. When the connecting block 317 moves within a small range, the second detection groove 318 can provide it with a certain amount of room to move. Therefore, when the connecting block 317 moves within a small range, the contact end of the micro-motion sensor 316 will also experience varying degrees of contact pressure with the upper end of the connecting block 317. As a result, the micro-motion sensor 316 can accurately detect the displacement of the connecting block 317.

[0031] During operation, a very small, updatable preset value A1 is first set for the controller 323. The controller 323 is an SC200 general-purpose controller. As can be seen from the connection relationship of the first detection slot 313, connecting block 317, second detection slot 318, micro-motion sensor 316, and mounting side shell 305, the micro-motion sensor 316 can collect the weight information of the mounting side shell 305 and pulley 303 through the connecting block 317 and transmit the collected weight information to the controller 323. The controller 323 converts the weight information into data and compares it with the preset value A1. When the data is less than or equal to the preset value A1, it means that the weight of the mounting side shell 305 and pulley 303 has become extremely small. To some extent, this means that the plumb weight 302 has separated from the stainless steel cable 304 and needs to be repaired and replaced with a new plumb weight 302. At this time, the controller 323 sends a command to the alarm 326, and the alarm 326 can start to sound. When the relevant personnel receive the alarm information, they can replace the new plumb weight 302.

[0032] It should be noted that, during operation, to ensure the relative stability of the floating island 206 within the predetermined area, the main control method is to fix the floating island 206 using a stainless steel cable 304. To ensure that the floating island 206 "drifts" within a small range within a certain area, the stainless steel cable 304 cannot be rigidly connected to the stainless steel column 301. Therefore, this invention uses a plumb bob counterweight 302. The plumb bob counterweight 302 is a crucial component in this invention. To ensure the continuous operation of this device, this invention needs to ensure that the plumb bob counterweight 302 does not lose its effectiveness due to accidental or sudden factors. Therefore, this invention includes the aforementioned detection mechanism to detect whether the plumb bob counterweight 302 is always connected to the stainless steel cable 304.

[0033] Furthermore, referring to Figure 7 As shown, the auxiliary component 3 also includes a driven shaft 314, a detection shaft 328, and an angle sensor 319. The right end of the drive shaft 312 passes through the mounting side shell 305 and extends into the interior of the mounting side shell 305. The driven shaft 314 is mechanically linked to the upper part of the drive shaft 312. The left end of the driven shaft 314 passes through the mounting side shell 305 and the detection box 308 in sequence and extends into the interior of the detection box 308. The detection shaft 328 is mechanically linked to the upper end of the driven shaft 314. The detection shaft 328 is located inside the detection box 308. The angle sensor 319 is fixedly installed inside the detection box 308. The other end of the detection shaft 328 is fixedly connected to the detection end of the angle sensor 319. Both the drive shaft 312 and the driven shaft 314 are rotatably connected to the mounting side shell 305, and the driven shaft 314 is rotatably connected to the detection box 308.

[0034] The auxiliary component 3 further includes a transmission wheel, a transmission belt 321, a driving gear 315, and a driven gear 320. There are two transmission wheels, which are respectively fixedly mounted on the driving shaft 312 and the driven shaft 314. The two transmission wheels are connected by the transmission belt 321. The driving gear 315 and the driven gear 320 are respectively fixedly mounted on the driven shaft 314 and the detection shaft 328, and the driving gear 315 and the driven gear 320 mesh with each other.

[0035] The auxiliary component 3 also includes multiple fixed side plates 327, which are fixedly installed in a circular array at the lower end of the floating ring 310. The fixed side plates 327 are connected to the stainless steel column 301 via floating ring springs 311. The buffering property of the floating ring springs 311 effectively improves the stability between the fixed side plates 327 and the stainless steel column 301, thereby further improving the stability between the stainless steel column 301 and the floating ring 310.

[0036] When the water level changes, the height of the floating island 206 changes, causing the stainless steel cable 304 to change. At this time, the wheel on the pulley 303 will rotate under the drive of the stainless steel cable 304. The rotating wheel will drive the drive shaft 312 to rotate through the shaft of the pulley 303. The rotating drive shaft 312 can drive the driven shaft 314 to rotate through two transmission wheels and transmission belt 321. The rotating driven shaft 314 can rotate through the drive gear 315 and the driven gear 320, thereby driving the detection shaft 328 to rotate. The angle sensor 319 can collect the angle information of the rotation of the detection shaft 328 and transmit it to the controller 323. The controller 323 converts the angle information into data and transmits it to the staff through the signal transmitter. At this time, the staff can grasp the relevant information of the reservoir liquid level in real time and make early warnings or other actions based on the relevant information, such as whether to release floodwater, thus making the reservoir management more intelligent.

[0037] Auxiliary component 3 also includes photovoltaic panel 306, photovoltaic controller 322, battery 324, inverter 325, alarm 326, and signal transmitter. Two photovoltaic panels 306 are provided, symmetrically fixedly installed at the left and right ends of the detection box 308; The photovoltaic controller 322, controller 323, battery 324, inverter 325, alarm 326, and signal transmitter are all fixedly installed in the top mounting block 309; The micro-motion sensor 316 and the angle sensor 319 are both electrically connected to the controller 323, and the controller 323 is electrically connected to the alarm 326 and the signal transmitter. The solar photovoltaic panel 306 is electrically connected to the photovoltaic controller 322, the photovoltaic controller 322 is electrically connected to the battery 324, the battery 324 is electrically connected to the inverter 325, and the inverter 325 is electrically connected to the micro-motion sensor 316, the angle sensor 319, the alarm 326, and the signal transmitter.

[0038] The solar photovoltaic panel 306 can accept solar energy and convert the collected solar energy into electrical energy, which is then sent to the photovoltaic controller 322. The photovoltaic controller 322 converts the electrical energy and sends it to the storage battery 324 for storage. The electricity stored in the storage battery 324 can be converted into alternating current by the inverter 325, which then powers the micro-motion sensor 316, the angle sensor 319, the alarm 326, and the signal transmitter, thereby achieving the effect of energy saving.

[0039] 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," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Furthermore, the terms "first," "second," etc., 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 with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A surface water intake device for a hydropower station at a fixed depth, characterized in that, include: Water intake assembly (2) and auxiliary assembly (3), wherein the water intake assembly (2) and auxiliary assembly (3) are installed in a reservoir formed by at least the power station reservoir dam (1); The water inlet assembly (2) includes: The generator set (201) is installed inside the reservoir dam (1) of the power station; The water intake pipe (203) is connected at one end to the water inlet of the generator set (201), and the other end is hung below the floating island (206); The auxiliary component (3) includes: Stainless steel columns (301) are inserted into the reservoir and located near the floating island; A floating ring (310) is fitted onto the top of a stainless steel column (301); The pulley (303) is rotatably connected to the lower end of the float ring (310); A stainless steel cable (304) is wound around a pulley (303). One end of the stainless steel cable (304) is connected to the floating island (206), and the other end is wrapped around the pulley (303) and fixedly installed with a plumb weight (302).

2. The fixed-depth surface water intake device for hydropower stations according to claim 1, characterized in that, The water inlet assembly (2) also includes: A fluid universal joint (202) is installed on the water flow path of the water intake pipe (203), with its inlet end fixedly connected to one end of the water intake pipe (203) and its outlet end fixedly connected to the inlet end of the generator set (201). Mounting bracket (204) is located between the water intake pipe (203) and the floating island (206), the water intake pipe (203) being mounted below the floating island (206) by means of mounting bracket (204); and Multiple stainless steel columns (205) are provided, and the multiple stainless steel columns (205) are evenly fixedly installed on the upper end of the mounting frame (204). The other end of the stainless steel column (205) is fixedly connected to the lower end of the floating island (206).

3. The fixed-depth surface water intake device for hydropower stations according to claim 1, characterized in that, The auxiliary component (3) also includes: The drive shaft (312) is rotatably connected to the mounting side shell (305), and one end of it is fixedly connected to the center of the pulley (303). When the pulley (303) rotates, it can drive the drive shaft (312) to rotate. The mounting side shell (305) is installed on the outer edge of the floating ring (310). The top mounting block (309) is fixedly installed on the upper end of the stainless steel column (301) and located above the floating ring (310). The outer edge of the top mounting block (309) is connected to the upper part of the mounting side shell (305). The testing box (308) is fixedly installed on the upper end of the top mounting block (309); and The display flag (307) is fixedly installed on the upper end of the testing box (308).

4. The fixed-depth surface water intake device for hydropower stations according to claim 3, characterized in that, The auxiliary component (3) also includes: The first detection slot (313) and the second detection slot (318) are provided. The first detection slot (313) is located on the front side of the top mounting block (309), and the second detection slot (318) is located behind the first detection slot (313). A connecting block (317) is fixedly installed on the mounting side shell (305). The connecting block (317) passes through the first detection groove (313) and is inserted into the second detection groove (318). The micro-motion sensor (316) is fixedly installed at the top of the second detection slot (318), and the contact end of the micro-motion sensor (316) abuts against the upper end of the connecting block (317).

5. The fixed-depth surface water intake device for hydropower stations according to claim 4, characterized in that, The auxiliary component (3) also includes: The drive shaft (312) extends through one side of the mounting side housing (305) and into the interior of the mounting side housing (305); Driven shaft (314) is mechanically linked above drive shaft (312). One end of driven shaft (314) passes through mounting side shell (305) and detection box (308) in sequence and extends into the inside of detection box (308). The detection shaft (328) is mechanically linked to the upper end of the driven shaft (314), and the detection shaft (328) is located inside the detection box (308); An angle sensor (319) is fixedly installed inside the front end of the detection box (308), and the other end of the detection shaft (328) is fixedly connected to the angle sensor (319); The drive shaft (312) and the driven shaft (314) are both rotatably connected to the mounting side shell (305), and the driven shaft (314) is rotatably connected to the detection box (308).

6. The fixed-depth surface water intake device for hydropower stations according to claim 5, characterized in that, The auxiliary component (3) also includes: The transmission wheel and the transmission belt (321) are provided. There are two transmission wheels. The two transmission wheels are respectively fixedly mounted on the rear ends of the drive shaft (312) and the driven shaft (314). The two transmission wheels are connected by the transmission belt (321). The driving gear (315) and the driven gear (320) are fixedly mounted on the driven shaft (314) and the detection shaft (328), respectively, and the driving gear (315) and the driven gear (320) mesh with each other.

7. The fixed-depth surface water intake device for hydropower stations according to claim 6, characterized in that, The auxiliary component (3) also includes: Multiple fixed side plates (327) are provided. The multiple fixed side plates (327) are fixedly installed in a ring array at the lower end of the floating ring (310). The fixed side plates (327) are connected to the stainless steel column (301) through the floating ring spring (311).

8. The fixed-depth surface water intake device for hydropower stations according to claim 7, characterized in that, The auxiliary component (3) also includes: Two photovoltaic panels (306) are provided, and the two photovoltaic panels (306) are symmetrically fixed at the left and right ends of the testing box (308); The photovoltaic controller (322), controller (323), battery (324), inverter (325), alarm (326) and signal transmitter are all fixedly installed in the top mounting block (309); The micro-motion sensor (316) and the angle sensor (319) are both electrically connected to the controller (323), and the controller (323) is electrically connected to the alarm (326) and the signal transmitter; The solar photovoltaic panel (306) is electrically connected to the photovoltaic controller (322), the photovoltaic controller (322) is electrically connected to the battery (324), the battery (324) is electrically connected to the inverter (325), and the inverter (325) is electrically connected to the micro-motion sensor (316), the angle sensor (319), the alarm (326), and the signal transmitter.

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