A diversion device for water power station tail water discharge

Abstract

The utility model discloses a shunt flow guide device for hydroelectric station tail water discharge, including discharge pool and shunt pool, the discharge pool sets up at the front side of shunt pool, the inner chamber of shunt pool has in proper order from left to right guide port, both sides of shunt pool upper end are all installed with stand, the upper end of stand inboard is installed with the supporting plate, the upper end of supporting plate has in proper order from left to right installed drive shell. The utility model discloses a modularization design of " one drive corresponds to one guide " is adopted, three drive shells and three guide ports in shunt pool are matched one by one, can through the operation state of each drive motor independent control, realizes the accurate regulation of guide baffle lifting height, and then carries out the individual control to each guide port's tail water flow, and this kind of design breaks the traditional device " one size fits all " adjustment mode, can according to downstream water demand, power generation load change etc. Actual working condition, flexible allocation tail water flow, effectively improved the utilization efficiency of water resources.

Description

Technical Field

[0001] This utility model relates to the field of diversion and guiding devices for tailwater discharge of hydropower stations, and specifically to a diversion and guiding device for tailwater discharge of hydropower stations. Background Technology

[0002] In the operation system of a hydropower station, the tailrace discharge system, as a core auxiliary unit, directly affects the efficiency of the generator units and the ecological balance of the downstream water environment. As hydropower projects develop towards larger scale and greater intelligence, tailrace discharge requires increasing attention.

[0003] Existing tailwater diversion devices at hydropower stations cannot achieve dynamic flow adaptation, which can easily lead to problems such as water flow impact and pressure changes in the discharge pipeline. This not only exacerbates equipment wear but may also cause safety hazards such as pipeline vibration. The diverse water demand downstream for irrigation, ecological water replenishment, and other purposes places higher demands on the accuracy of tailwater diversion. Existing diversion devices mostly adopt a single-path discharge mode, which makes it difficult to achieve independent control of multi-channel flow according to actual needs, resulting in low water resource utilization efficiency.

[0004] Therefore, it is necessary to provide a diversion and guiding device for tailwater discharge of hydropower stations to solve the above-mentioned technical problems. The information disclosed in this background section is only intended to enhance the understanding of the overall background of this utility model, and is not necessarily regarded as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] To address this issue, this utility model provides a diversion and guiding device for tailwater discharge from hydropower stations. This device, used in conjunction with other technologies, solves the problem that existing tailwater diversion and guiding devices often fail to dynamically adapt flow rates, leading to issues such as water flow impact and pressure fluctuations within the discharge pipeline. This not only exacerbates equipment wear but may also cause safety hazards like pipeline vibration. Furthermore, the diverse water demands of downstream irrigation and ecological replenishment place higher demands on the accuracy of tailwater diversion. Existing diversion devices often employ a single-path discharge mode, making it difficult to achieve independent flow control across multiple channels according to actual needs, resulting in low water resource utilization efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a diversion and guiding device for tailwater discharge of a hydropower station, comprising a discharge pool and a diversion pool. The discharge pool is located in front of the diversion pool. The inner cavity of the diversion pool is provided with guide ports from left to right. Columns are installed on both sides of the upper end of the diversion pool. A support plate is installed on the upper end of the inner side of the column. A drive housing is installed on the upper end of the support plate from left to right. A drive motor is installed on the right side of the inner cavity of the drive housing. A drive shaft is installed at the output end of the drive motor. A reducer is sleeved on the right side of the surface of the drive shaft. Drive rollers are provided on both sides of the surface of the drive shaft and on the left side of the reducer. A steel wire rope is wound around the outer surface of the drive roller. The side of the steel wire rope away from the drive roller extends through both sides of the lower end of the drive housing and onto the lower end of the support plate, where a fixed seat is installed. A stabilizing seat is installed at the lower end of the fixed seat, and a guide baffle is installed at the lower end of the stabilizing seat.

[0007] Preferably, there are three flow guide ports and three drive housings, with the three flow guide ports being equally spaced within the cavity of the diversion pool, and the three drive housings being equally spaced on the upper end of the support plate. The drive housings provide good protection for the drive motor, preventing external moisture from affecting its normal operation.

[0008] Preferably, the drive housing has doors on both sides of the front side via hinges, and a heat dissipation vent is provided on the front of the door and on the right side of the drive housing. The heat dissipation vent is equipped with a heat dissipation filter. Through the sealing design of the drive housing and the configuration of the heat dissipation filter, water vapor and impurities in the exhaust water can be prevented from entering the internal components and corroding them, thus extending the service life of core components such as the drive motor.

[0009] Preferably, the two sides of the flow guide baffle are fitted with the two sides of the inner cavity of the flow guide port, and the lower end of the flow guide baffle is fitted with the lower end of the inner cavity of the flow guide port. The guide blocks on both sides of the flow guide baffle and the sealing guide groove in the flow guide port form a sliding fit, which not only provides a stable movement trajectory for the baffle, but also enhances the fit between the two, effectively reducing the impact of water flow on the baffle.

[0010] Preferably, sealing guide grooves are provided on both sides of the inner cavity of the diversion port. A guide block is slidably connected to the inner cavity of the sealing guide groove. The inner side of the guide block passes through the inner side of the sealing guide groove and is fixed to both sides of the diversion baffle. Through the combination structure of the sealing guide groove and the guide block, combined with the tight fit design between the diversion baffle and the inner cavity of the diversion port, a double sealing defense line is formed, which can control the leakage of tailwater to a very small range and significantly improve the diversion efficiency.

[0011] Preferably, a bearing seat is fitted on the left side of the drive shaft, and the left side of the bearing seat is fixed to the left side of the inner cavity of the drive housing. Both sides of the lower end of the inner cavity of the drive housing are provided with through holes for use with the wire rope. The bearing seat plays a stabilizing role when the drive shaft rotates.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model adopts a modular design of "one drive corresponding to one guide". The three drive shells are matched one by one with the three guide ports in the diversion pool. The operation status of each drive motor can be independently controlled to achieve precise adjustment of the lifting height of the guide baffle. Thus, the tailwater flow of each guide port can be controlled individually. This design breaks the traditional "one-size-fits-all" adjustment mode. It can flexibly allocate the tailwater flow according to the actual working conditions such as downstream water demand and power generation load changes, effectively improving the utilization efficiency of water resources. The setting of the reducer in the drive system can convert the high speed of the drive motor into the stable torque of the drive roller, avoiding the impact and shaking during the lifting of the guide baffle.

[0014] 2. The design of the door on the front of the drive housing of this utility model makes it easy for staff to quickly open and inspect and maintain the internal components. The heat dissipation vent can dissipate the heat generated by the drive motor in a timely manner, avoiding damage to the motor due to overheating and reducing maintenance costs. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of this utility model;

[0016] Figure 2 Left top view of the structure of the discharge pool and diversion pool provided by this utility model;

[0017] Figure 3 A top view of the diversion tank and drive housing structure provided by this utility model;

[0018] Figure 4 A cross-sectional view of the drive housing structure provided by this utility model;

[0019] Figure 5 A bottom view of the drive housing and wire rope structure provided by this utility model.

[0020] In the diagram: 1. Discharge pool; 2. Diversion pool; 3. Flow guide port; 4. Column; 5. Support plate; 6. Drive housing; 7. Drive motor; 8. Drive shaft; 9. Reducer; 10. Drive roller; 11. Wire rope; 12. Fixed seat; 13. Stabilizing seat; 14. Flow guide baffle; 15. Sealing guide groove; 16. Guide block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1, refer to Appendix Figure 1-5 This utility model provides a diversion and guiding device for tailwater discharge of a hydropower station, including a discharge pool 1 and a diversion pool 2. The discharge pool 1 is located in front of the diversion pool 2. The inner cavity of the diversion pool 2 is provided with diversion ports 3 from left to right. Columns 4 are installed on both sides of the upper end of the diversion pool 2. Support plates 5 are installed on the upper end of the inner side of the columns 4. Drive housings 6 are installed on the upper end of the support plates 5 from left to right. Drive motors 7 are installed on the right side of the inner cavity of the drive housings 6. Drive shafts 8 are installed at the output end of the drive motors 7. A reducer 9 is sleeved on the right side of the surface of the drive shaft 8. Drive rollers 10 are provided on both sides of the surface of the drive shaft 8 and on the left side of the reducer 9. Steel wire ropes 11 are wound on the outer surface of the drive rollers 10. The side of the steel wire ropes 11 away from the drive rollers 10 passes through both sides of the lower end of the drive housing 6 and extends to the lower end of the support plates 5. Fixing seats 12 are installed at the lower end of the fixing seats 12. Stable seats 13 are installed at the lower end of the stable seats 13. Diversion baffles 14 are installed at the lower end of the stable seats 13.

[0023] The usage process of this utility model is as follows: When using this utility model, the core logic is "drive motor 7 - mechanical transmission - baffle adjustment - flow control", combined with the actual tailwater discharge requirements to achieve automated and precise operation. The guide baffle 14 is in a fully closed state, and its lower end is tightly fitted with the lower end of the inner cavity of the guide port 3, blocking the tailwater from flowing out through the guide port 3. The operator presets the target flow rate of each guide port 3 through the control system. The system calculates the required lifting height of each guide baffle 14 according to the flow requirements and transmits the control signal to the corresponding drive motor 7. After receiving the control signal, the drive motor 7 starts. The output end drives the drive shaft 8 to rotate. During the rotation of the drive shaft 8, the reducer 9 adjusts the speed to convert high speed and low torque into low speed and high torque, ensuring that the drive roller 10 rotates stably. When the drive roller 10 rotates, the steel wire rope 11 wound on its surface is simultaneously wound up and down. The steel wire rope 11 extends through the through hole cavity at the lower end of the drive housing 6 to the support plate 5, driving the fixed seat 12 and the stable seat 13 to move synchronously. The stable seat 13 drives the guide baffle 14 to move in the vertical direction. At this time, the guide blocks 16 on both sides of the guide baffle 14 slide synchronously in the sealing guide groove 15 on the inner wall of the guide port 3, providing guidance and limiting function for the guide baffle 14.

[0024] Example 2, the present invention provides a diversion and guiding device for tailwater discharge of a hydropower station, which differs from Example 1 in that:

[0025] Refer to the instruction manual appendix Figure 1-5 This embodiment describes a diversion and guiding device for tailwater discharge in a hydropower station. It comprises three diversion ports 3 and three drive housings 6. The three diversion ports 3 are equidistantly located within the cavity of the diversion pool 2, and the three drive housings 6 are equidistantly mounted on the upper end of the support plate 5. Each drive housing 6 has a hinged door on both sides of its front. A heat dissipation vent is located on the front of the door, specifically on the right side of the drive housing 6. A heat dissipation filter is installed inside the heat dissipation vent. The diversion baffle 14 is positioned on both sides of the diversion ports 3. The two sides of the cavity are fitted together, and the lower end of the guide baffle 14 is fitted together with the lower end of the inner cavity of the guide port 3. Both sides of the inner cavity of the guide port 3 are provided with sealing guide grooves 15. The inner cavity of the sealing guide groove 15 is slidably connected with a guide block 16. The inner side of the guide block 16 passes through the inner side of the sealing guide groove 15 and is fixed to both sides of the guide baffle 14. The left side of the drive shaft 8 is fitted with a bearing seat, and the left side of the bearing seat is fixed to the left side of the inner cavity of the drive housing 6. Both sides of the lower end of the inner cavity of the drive housing 6 are provided with through holes for use with the wire rope 11.

[0026] The specific implementation scenario is as follows: When using this utility model, the core logic is "drive motor 7 - mechanical transmission - baffle adjustment - flow control". Combined with the actual tailwater discharge requirements, automated and precise operation is achieved. The guide baffle 14 is in a fully closed state, with its lower end tightly fitted to the lower end of the inner cavity of the guide port 3, blocking the tailwater from flowing out through the guide port 3. The operator presets the target flow rate of each guide port 3 through the control system. The system calculates the required lifting height of each guide baffle 14 according to the flow requirements and transmits the control signal to the corresponding drive motor 7. After receiving the control signal, the drive motor 7 starts, and its output end drives the drive motor 7. As shaft 8 rotates, the reducer 9 adjusts the speed, converting high speed and low torque into low speed and high torque to ensure stable rotation of drive roller 10. Simultaneously, the steel wire rope 11 wound around its surface is unwound as drive roller 10 rotates. The steel wire rope 11 extends through the through-hole cavity at the lower end of drive housing 6 to below support plate 5, driving fixed seat 12 and stable seat 13 to move synchronously. Stable seat 13 drives guide baffle 14 to move vertically. At this time, guide blocks 16 on both sides of guide baffle 14 slide synchronously within the sealing guide groove 15 on the inner wall of guide port 3, providing guidance and limiting function for guide baffle 14. When guide baffle 14 rises to... At the preset height, the drive motor 7 stops running, and the guide baffle 14 remains in this position. After the tailwater flows from the discharge pool 1 into the diversion pool 2, it flows out through the gap between the guide baffle 14 and the guide port 3, thus achieving diversion. If it is necessary to reduce the flow rate, the drive motor 7 rotates in the reverse direction, and the wire rope 11 tightens, causing the guide baffle 14 to descend, narrowing the flow gap until the target flow rate is reached. During the operation of the device, the operator can observe the operating status of the internal components through the door of the drive housing 6. The heat dissipation filter filters the air entering the drive housing 6 to prevent the accumulation of dust and impurities. If the flow rate of a certain guide port 3 needs to be adjusted, only the corresponding port needs to be controlled individually. The start, stop, and direction of the drive motor 7 do not affect the operation of other guide ports 3, enabling independent control of multiple channels. When the device needs to be shut down for maintenance, all drive motors 7 are controlled to drive the guide baffles 14 to close completely, blocking the tailwater before maintenance operations can be carried out. Both the drive motor 7 and the reducer 9 are existing technologies and will not be described in detail here. The contents not described in detail in this specification are existing technologies known to those skilled in the art, and their technical principles and implementation methods are within the general knowledge scope of those skilled in the art. To keep the specification concise, the basic technical details will not be repeated here, and the focus will be on the innovative improvements of this technology.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, this utility model will not explain the control method and circuit connection in detail. The external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A diversion and guiding device for tailwater discharge of a hydropower station, comprising a discharge pool (1) and a diversion pool (2), characterized in that: The discharge pool (1) is located in front of the diversion pool (2). The inner cavity of the diversion pool (2) has guide ports (3) arranged sequentially from left to right. Columns (4) are installed on both sides of the upper end of the diversion pool (2). A support plate (5) is installed on the upper end of the inner side of the column (4). A drive housing (6) is installed sequentially from left to right on the upper end of the support plate (5). A drive motor (7) is installed on the right side of the inner cavity of the drive housing (6). A drive shaft (8) is installed at the output end of the drive motor (7). The drive shaft (8) is... A speed reducer (9) is fitted on the right side of the drive shaft (8). Drive rollers (10) are provided on both sides of the drive shaft (8) and on the left side of the speed reducer (9). A steel wire rope (11) is wound on the outer surface of the drive roller (10). The side of the steel wire rope (11) away from the drive roller (10) extends through both sides of the lower end of the drive housing (6) and extends to the lower end of the support plate (5) to install a fixed seat (12). A stabilizing seat (13) is installed at the lower end of the fixed seat (12). A guide baffle (14) is installed at the lower end of the stabilizing seat (13).

2. A diversion and guiding device for tailrace discharge of a hydropower station according to claim 1, characterized in that: The number of the flow guide (3) and the number of the drive housing (6) are both three, and the three flow guides (3) are equally spaced in the inner cavity of the diversion pool (2), and the three drive housings (6) are equally spaced on the upper end of the support plate (5).

3. A diversion and guiding device for tailrace discharge of a hydropower station according to claim 1, characterized in that: Both sides of the front of the drive housing (6) are provided with doors via hinges, and a heat dissipation vent is provided on the front of the door and on the right side of the front of the drive housing (6), and a heat dissipation filter is provided in the inner cavity of the heat dissipation vent.

4. A diversion and guiding device for tailrace discharge of a hydropower station according to claim 1, characterized in that: The two sides of the flow guide baffle (14) are attached to the two sides of the inner cavity of the flow guide port (3), and the lower end of the flow guide baffle (14) is attached to the lower end of the inner cavity of the flow guide port (3).

5. A diversion and guiding device for tailrace discharge of a hydropower station according to claim 1, characterized in that: The inner cavity of the flow guide (3) is provided with sealing guide grooves (15) on both sides. The inner cavity of the sealing guide groove (15) is slidably connected with a guide block (16). The inner side of the guide block (16) passes through the inner side of the sealing guide groove (15) and is fixed to both sides of the flow guide baffle (14).

6. A diversion and guiding device for tailrace discharge of a hydropower station according to claim 1, characterized in that: A bearing seat is fitted on the left side of the drive shaft (8), and the left side of the bearing seat is fixed to the left side of the inner cavity of the drive housing (6). Both sides of the lower end of the inner cavity of the drive housing (6) are provided with through holes for use with the wire rope (11).

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