Water wheel hoist gate

Abstract

The utility model provides water wheel hoist machine gate, including power station wall body, frame body and liftablely set up on frame body and be used for controlling the gate of water flow flood discharge, the side of frame body is close to the one side of reservoir and is provided with drive mechanism, and this drive mechanism includes the water wheel disc of horizontal installation on first base and the rotation axis is parallel to the plane of gate, and high pressure impact equipment is extended to the reservoir and the water outlet of water inlet is opposite the vane of water wheel disc. The utility model adopts mechanical linkage design completely, avoids the problem of electronic control system failure, solves the power source under the emergency condition through the water power self -drive, has higher reliability and security compared with traditional electric hoist, especially suitable for the safety guarantee of reservoir dam under the extreme disaster condition.

Description

Technical Field

[0001] This utility model relates to a gate for a water turbine winch. Background Technology

[0002] The safe operation of hydropower dams is crucial for flood control and power generation, and the gate opening and closing system is the core equipment for dam safety. Currently, most hydropower station gates are opened and closed using electric winches. This traditional design has significant safety hazards: when the power station experiences a power outage, the winch motor burns out, or the control system malfunctions, the gates will fail to open normally, preventing the dam from releasing floodwaters in a timely manner. If such a failure occurs during the flood season, it could cause a rapid rise in reservoir water levels, affecting power generation efficiency at best, and potentially leading to dam collapse, causing serious safety accidents and threatening the lives and property of people downstream.

[0003] While some hydropower stations are equipped with backup power systems, these systems can fail in extreme situations (such as complete power outages caused by natural disasters like earthquakes or floods). Furthermore, repairs for burnt-out motors or malfunctioning control systems often take considerable time, failing to meet the timeliness requirements for emergency flood discharge. Therefore, there is an urgent need for a safe flood discharge device that is independent of electricity and can automatically respond to water level changes, serving as a reliable supplement to existing electric gate systems to ensure dam safety under various extreme conditions. Utility Model Content

[0004] This utility model provides a water turbine winch gate, which can effectively solve the above problems.

[0005] This utility model is implemented as follows:

[0006] The turbine winch gate includes the power station wall, frame, and a gate that is raised and lowered on the frame and used to control water flow and flood discharge.

[0007] The frame is equipped with a drive mechanism on the side near the reservoir. The drive mechanism includes a water turbine disk horizontally mounted on the first base with its rotation axis parallel to the gate plane, a high-pressure impact device with its inlet extending into the reservoir and its outlet facing the blades of the water turbine disk, a valve installed on the inlet pipe of the high-pressure impact device, a first winding device installed on the top of the first base, and a water turbine disk connected to the shaft.

[0008] A transmission mechanism is arranged at the top of the frame. The transmission mechanism includes a second base, a second winding device and a second cover disposed on the top of the second base. A transmission gear is disposed inside the second cover. The transmission gear cooperates with a first transmission component to drive the third winding device to rotate through the first transmission component. The third winding device drives a fourth winding device to rotate through the second transmission component, thereby pulling the traction component wound on the third winding device and the fourth winding device to pull the gate.

[0009] The beneficial effects of this utility model are:

[0010] (1) The water turbine winch gate of this utility model realizes the automatic emergency opening and closing of the gate through a purely mechanical structure. Its beneficial effects are mainly reflected in the following: when the power station loses power or the control system fails, the water level rises and the high-pressure impact equipment is automatically triggered to work. The high-speed water flow drives the water turbine to rotate, and the multi-stage transmission mechanism drives the winding equipment to work in coordination. The gate can be reliably lifted to discharge flood without external power. The symmetrically arranged double winding equipment and linkage transmission mechanism ensure that the gate is lifted smoothly. The whole system adopts a mechanical linkage design, which avoids the problem of easy failure of electronic control system and solves the power source in emergency situations through hydraulic self-drive. Compared with traditional electric gate hoists, it has higher reliability and safety, and is particularly suitable for the safety guarantee of reservoir dams under extreme disaster conditions. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is the front view of this utility model.

[0013] Figure 2 This is a schematic diagram of the drive mechanism of this utility model.

[0014] Figure 3 This is a schematic diagram of the transmission mechanism of this utility model.

[0015] Figure 4 This is a schematic diagram of the planar structure of this utility model.

[0016] Explanation of icon numbers:

[0017] 10. Power station wall; 20. Frame structure; 30. Gate;

[0018] 40. Drive mechanism; 400. First base; 402. First cover; 404. Upper base plate; 406. Connecting part; 408. First winding device; 410. Water turbine disc; 412. Shaft; 414. Counter-impact part; 416. High-pressure impact device; 418. Valve;

[0019] 50. Transmission mechanism; 500. Second base; 502. Second winding device; 504. Second cover; 506. Transmission gear; 508. First transmission component; 510. Third winding device; 512. Second transmission component; 514. Fourth winding device; 516. Pulling component. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0021] In the description of this utility model, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Reference Figure 1-4 As shown, the turbine winch gate includes a power station wall 10, a frame 20, and a gate 30 that is vertically mounted on the frame 20 and used to control water flow and flood discharge.

[0023] A drive mechanism 40 is provided on the side of the frame 20 near the reservoir. The drive mechanism 40 includes a water turbine 410 horizontally mounted on the first base 400 with its rotation axis parallel to the plane of the gate 30, a high-pressure impact device 416 with its inlet extending into the reservoir and its outlet facing the blades of the water turbine 410, a valve 418 installed on the inlet pipe of the high-pressure impact device 416, a first winding device 408 installed on the top of the first base 400, and a water turbine 410 connected to a shaft 412. The other end of the shaft 412 is rotatably connected to a connector 406 installed on the upper base 404. The water turbine 410 includes an anti-impact part 414 with its concave surface facing the outlet of the high-pressure impact device 416.

[0024] The outlet cross-sectional area of ​​the high-pressure impact device 416 is smaller than the inlet cross-sectional area. The modification is based on the Venturi effect principle in fluid mechanics. The sudden contraction of the pipe cross-sectional area significantly increases the water flow velocity, thereby converting the pressure energy of the water flow into kinetic energy. When the high-pressure water flow enters the reservoir from the inlet with a larger cross-section, the flow velocity is low but the pressure is high. As it flows through the gradually contracting pipe section, according to the law of conservation of mass (Q = v1A1 = v2A2) and Bernoulli's equation, the water flow velocity increases as the cross-sectional area decreases. At the same time, the dynamic pressure increases while the static pressure decreases. Finally, when it is ejected from the outlet with a smaller cross-section, a high-speed jet is obtained (the flow velocity can reach more than 3 times that of the inlet). This high-speed water flow can more effectively impact the blades of the turbine disk 410, which not only increases the momentum transfer efficiency of a single impact, but also enhances the penetration force of the water flow on the blades by increasing the Froude number. At the same time, the smaller outlet can concentrate the water flow spray range, ensuring that at least 85% of the water flow energy acts on the effective working area of ​​the blades, avoiding energy diffusion loss. Thus, without the need for external energy, sufficient torque can be generated to drive the gate lifting mechanism by hydraulic self-drive alone.

[0025] Valve 418 is a float-type mechanical valve or a pressure-sensing valve. The valve body may include, but is not limited to, the aforementioned valve body; the required valve body can be selected according to actual needs, and this application does not impose any restrictions.

[0026] The drive mechanism 40 also includes a first cover 402 disposed on the first base 400. The first cover 402 has a drive gear inside that meshes with the driven gear on the shaft 412, thereby driving the driven gear and the shaft 412 to rotate.

[0027] The blade angle of the water turbine 410 is adjustable to adapt to the impact of water flow at different velocities.

[0028] For ease of understanding, this case is explained as follows:

[0029] This project utilizes the inherent energy of water flow as a power source. Through a cleverly designed water turbine mechanism, the kinetic energy of the water flow is converted into mechanical energy to drive the winch. This design is completely independent of external power supply, solving the power problem in the event of a power outage. When the reservoir water level rises to the warning height, the water flow velocity and water pressure increase, and the water turbine automatically starts rotating. Through the transmission mechanism 50, it drives the winch to work, thereby raising the gate to release floodwater. After the water level drops, the water flow slows down, and the device automatically stops working. The entire opening and closing process is completed entirely by the mechanical structure, without relying on the electronic control system, avoiding functional failures caused by damage to the control electrical components. The system structure is simple and reliable, with low maintenance requirements. This device serves as a supplement to the existing electric opening and closing system. It does not affect normal electric operation under normal circumstances and only automatically starts when the power system fails, providing double safety protection. Through mechanical design, it ensures that the gate opening speed and degree match the water level rise speed, preventing sudden full opening from causing downstream impact and achieving a smooth and controllable flood discharge process.

[0030] A transmission mechanism 50 is arranged on the top of the frame 20. The transmission mechanism 50 includes a second base 500, a second winding device 502 and a second cover 504 arranged on the top of the second base 500. A transmission gear 506 is arranged inside the second cover 504. The transmission gear 506 cooperates with the first transmission member 508 to drive the third winding device 510 to rotate through the first transmission member 508. The third winding device 510 drives the fourth winding device 514 to rotate through the second transmission member 512. This pulls the gate 30 by the pulling member 516 wound on the third winding device 510 and the fourth winding device 514.

[0031] The pulling component 516 is a steel wire rope or chain, and one end of it is connected to the lifting ring on the gate 30.

[0032] Working principle: When the reservoir water level rises to the set height, the float-type mechanical valve or pressure sensing valve 418 automatically opens, introducing high-pressure water from the reservoir into the pipeline. The high-pressure water flow is accelerated through the Venturi tube structure of the high-pressure impact device 416 and then directionally impacts the adjustable-angle blades of the water turbine 410. The kinetic energy of the water drives the water turbine 410 to rotate, which in turn drives the first winding device 408 to operate via the gear-driven shaft 412. Simultaneously, the water turbine 410, through the meshing of the driving and driven gears in the gear set within the first housing 402, winds the first winding device... The power generated by the traction component 516 on the equipment 408 is transmitted to the transmission mechanism 50. The traction component 516 on the second winding equipment 502 drives the transmission gear 506 to cooperate with the first transmission component 508, thereby driving the third winding equipment 510 and the second transmission component 512 to drive the fourth winding equipment 514 to rotate synchronously. This allows the traction components 516 (steel wire rope or chain) wound on each winding equipment to work together to pull the gate 30 to be lifted smoothly along the guide rail of the frame 20. The counter-flow section 414 optimizes the water flow impact angle to achieve purely mechanical automatic flood discharge.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A turbine winch gate, comprising a power station wall (10), a frame (20), and a gate (30) that is vertically mounted on the frame (20) and used to control water flow and flood discharge, characterized in that, The frame (20) is provided with a drive mechanism (40) on the side near the reservoir. The drive mechanism (40) includes a water turbine (410) horizontally mounted on the first base (400) with its rotation axis parallel to the plane of the gate (30), a high-pressure impact device (416) with its inlet extending into the reservoir and its outlet facing the blades of the water turbine (410), a valve (418) installed on the inlet pipe of the high-pressure impact device (416), a first winding device (408) installed on the top of the first base (400), and a water turbine (410) connected to the shaft (412). A transmission mechanism (50) is arranged on the top of the frame (20). The transmission mechanism (50) includes a second base (500), a second winding device (502) and a second cover (504) arranged on the top of the second base (500). A transmission gear (506) is arranged inside the second cover (504). The transmission gear (506) cooperates with the first transmission member (508) to drive the third winding device (510) to rotate through the first transmission member (508). The third winding device (510) drives the fourth winding device (514) to rotate through the second transmission member (512). Thus, the pulling member (516) wound on the third winding device (510) and the fourth winding device (514) pulls the gate (30).

2. The turbine winch gate according to claim 1, characterized in that, The other end of the shaft (412) is rotatably connected to the connector (406) mounted on the upper seat (404).

3. The turbine winch gate according to claim 1, characterized in that, The water turbine (410) includes a counter-impact section (414) with its concave surface facing the outlet of the high-pressure impact device (416).

4. The turbine winch gate according to claim 1, characterized in that, The valve (418) is a float-type mechanical valve or a pressure-sensing valve.

5. The turbine winch gate according to claim 1, characterized in that, The drive mechanism (40) further includes a first cover (402) disposed on the first base (400). The first cover (402) is provided with a drive gear that meshes with the driven gear on the shaft (412), thereby driving the driven gear and the shaft (412) to rotate.

6. The turbine winch gate according to claim 1, characterized in that, The blade angle of the water turbine (410) is adjustable to adapt to the impact of water flow at different velocities.

7. The turbine winch gate according to claim 1, characterized in that, The pulling member (516) is a wire rope or chain, and one end of it is connected to the lifting ring on the gate (30).

8. The turbine winch gate according to claim 1, characterized in that, The outlet cross-sectional area of ​​the high-pressure impact device (416) is smaller than the inlet cross-sectional area.

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