Pump turbine capable of rotating forwards and backwards

Abstract

The invention discloses a pump turbine capable of rotating forwards and backwards. The pump turbine comprises a shell and a rotor. The shell comprises two end plates which are the same in shape and a case used for connecting the two end plates. Each end plate comprises a large semicircular plate and a small semicircular plate which are coaxial but different in radius, wherein the large semicircular plate and the small semicircular plate are connected into a whole in the diameter direction. The case comprises a first annular plate and a second annular plate, wherein the first annular plate is provided with a first water inlet / outlet and a second water inlet / outlet. The rotor comprises a rotating shaft, a rotating wheel and at least two blades, wherein a working channel is formed between the rotating wheel and the second annular plate, a returning channel is formed between the rotating wheel and the first annular plate, and the geometric dimensions of the blades are matched with those of the working channel. The shell is provided with a first water stopping device, a second water stopping device and a driving device, wherein the first water stopping device and the second water stopping device are arranged in the retuning channel, and the driving device is used for driving the first water stopping device and the second water stopping device to open and close alternately. The rotor of the pump turbine can rotate forwards and backwards, and the working efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of water pumps and water turbines, and in particular relates to a forward and reverse water pump and water turbine. Background technique [0002] Modern water turbine technology often relies on the construction of dams to increase the potential energy of water so that water energy resources can be effectively utilized; however, the existing water turbine technology that does not require dams to convert water kinetic energy into mechanical energy has the bottleneck of low efficiency and high cost . The amount of water energy resources in rivers and oceans is extremely huge, but due to limited conditions, most places are not suitable for building dams. The level of water head has a great impact on the performance of water turbines, and it is difficult for water turbines with low water heads to be used in In rivers and oceans where dams cannot be built. [0003] On the other hand, water pumps are important eq...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems that the water pump can only pump water in one direction, the use efficiency of the water turbine is low, and the cost is high, the present invention provides a forward and reverse water pump that can utilize water resources including high, medium, low water heads and natural state rivers and oceans. , water turbine

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