Water turbine

Abstract

The invention provides a water turbine, which comprises a roller, a power shaft, a fixed frame, an arc-shaped flow guiding plate and a plurality of movable blades, and further comprises a control device. The roller is arranged on one side of the water feeding end, the arc-shaped flow guiding plate is located on the bottom side of the roller, and a drainage channel is formed between the arc-shapedflow guiding plate and the roller; the power shaft is connected to the roller in a penetrating mode, the fixed frame is arranged along the outer surface of the roller, the two end faces of the rollerare connected with the fixed frame, the first sides of the movable blades are rotatably connected with the fixed frame, and the fixed frame is provided with a locking device for fixing the second sides of the movable blades; and when the movable blades enter the drainage channel along with the roller, the control device controls the second sides of the movable blades to be separated from the locking device, and when the movable blades come out from the drainage channel and continue rotating, the second sides of the movable blades are gradually connected with the locking device. Based on the water turbine, the utilization rate of water energy can be increased, noise pollution is reduced, smooth operation of the water turbine is guaranteed, and the service life of the water turbine is prolonged.

Description

technical field [0001] The invention relates to the technical field of hydroelectric power generation equipment, in particular to a water turbine. Background technique [0002] A water turbine is a power device that converts water energy into mechanical energy, and is widely used in hydropower and other fields. According to the different setting methods of the power shaft, the water turbine can be divided into vertical type and horizontal type. At present, the vertical type is used most, and the horizontal type is rarely used. [0003] The current horizontal water turbine has a low conversion rate of gravitational potential energy to water. For example, in the technical scheme recorded in the Chinese invention patent "ultra-low head tumble flow water turbine" (patent number 201720313863.3), "the water inlet end is set on one side of the drum and An arc-shaped deflector is set on the lower part of this side, and the deflector is connected to the water inlet. A number of mov...

AI Technical Summary

Problems solved by technology

[0003] The current horizontal water turbine has a low conversion rate of gravitational potential energy to water. For example, in the technical scheme recorded in the Chinese invention patent "ultra-low head tumble flow water turbine" (patent number 201720313863.3), "the water inlet end is set on one side of the drum and An arc-shaped deflector is set on the lower part of this side, and the deflector is connected to the water inlet. A number of movable blades are evenly arranged on the peripheral surface of the drum. The movable blades are composed of a support frame and a blade main body. The edge is hinged to the support frame”

Based on the above technical scheme, during the rotation of the water wheel, a part of the blades is impacted by the water flow to drive the power shaft to rotate and do work, while the other part of the blades is exposed in the air, and the blades exposed in the air will be reacted by the water when they enter the water flow. When the water wheel continues to rotate and the blades leave the water surface, the blades will overcome the resistance of the water to do work, and the blades will be subjected to air force during the rotation of the drum. Great resistance, loud noise

To sum up, it can be seen that the above-mentioned water turbine causes the blades to consume a large part of energy to overcome the water flow resistance to do work, which leads to low water energy utilization rate, which in turn makes the energy conversion rate of the water turbine low, and the blades are easily damaged during use, making the water turbine unusable. , the impact of blades and water flow causes noise pollution

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