Mini hydro-electric power plant

FIELD: power industry.

SUBSTANCE: invention relates to flow energy converters located along it and taking hydraulic energy at the distance determined by the converter length. A mini hydro-electric power plant includes a screw consisting of a cylinder with blades on its surface. The cylinder is connected to the generator and located along a water flow. The blades are made in the form of several pipes uniformly located along the cylinder surface along a helicoid line. A confuser with maximum cone diameter equal to the cylinder diameter and a diffuser the minimum diameter of which is equal to a sum of the cylinder diameter and two diameters of pipes at their inlet are connected to the cylinder. Outlet ends of the pipes are provided with tips installed at a tangent to cylindrical surface.

EFFECT: invention is aimed at increase of efficiency and specific output power owing to increasing the effect of obtaining higher pressure from a moving flow and simultaneous use of a jet component of the flow.

2 cl, 1 dwg

 

The present invention relates to an energy Converter, a stream located along it and discharging hydraulic energy at a distance determined by the length of the Converter.

Known devices of similar purpose, to be installed along the stream to convert hydraulic energy chutes canals, rivers and streams[1, 2, 3, 4] (analogues), respectively: [1] B. Blinov, S. Daisy chained HPP. M., 1963, S. 16, Fig.8,b; [2] Y. Novikov M Opportunities hydroelectric dam. Scientific and technical collection "Energy and environment", S. 81, Novosibirsk, 1988, ed. Institute of Thermophysics SB RAS; [3] the Patent for useful model # 61808 "Rotary turbine. Options" A. I. Popov; [4] the Patent for useful model №61809 "Torsiona turbine" A. I. Popov.

In such constructions, the flow goes into the semi-cylinders or parts thereof and extends along the slit tangent to the circle, creating a reactive torque.

The disadvantage of these devices is the low efficiency and small generated power density due to incomplete use of the energy of the velocity head of the water flow.

This is because the main part of the flow is not inside the semi-cylinders, and wraps around hydroturbine without creating rotational motion.

Also known screw converters energy is the flow of water [5]: Description screw HPP "Future Energy Yorkshire)) [electronic resource]. Mode of access: www.fev.org.uk.

In such screw HPP (analog) auger is located in the inclined pipe and can rotate only at considerable elevation. This design is more suitable to dam or diversion HPP options.

In these structures the flow interacting with a screw surface in its entirety, provides a greater flow pressure and high specific power output.

However, the disadvantage of these devices is the low efficiency, since not using the reactive component of the power and not fully used the rotating torque from the pressure.

The closest device to the declared (prototype) is a patent for useful model №94642 "Dam screw hydroelectric" authors Popov A. I., Dekleine C. E. [6]. In this design used two or more screws located at an angle to each other across the flow of water using angular gearboxes and blades of different diameters.

The shortcoming of the prototype is the inability selection of hydraulic energy from the long stretch of the stream, and the design complexity due to the need to place screws at an angle to the stream for more efficient weaning hydraulic energy.

The present invention is to increase the efficiency and specific verbatim the emnd power by increasing the effect of getting more pressure from the driving flow and the simultaneous use of a reactive component of the stream.

This object is achieved in that the mini-HPP containing auger consisting of a cylinder with blades on its surface, and the cylinder is connected to the generator and is located along the water flow, according to the invention the blades are made of several tubes, which are evenly spaced over the surface of the cylinder along the helical pattern of the line to the cylinder is connected confuser with maximum cone diameter equal to the diameter of the cylinder and the cone, the minimum diameter of which is equal to the sum of the diameter of the cylinder and two pipe diameters on their input and output ends of the pipes are equipped with nozzles set at a tangent to the cylindrical surface. In addition, the profile of the tips made on the profile of the suction pipe turbines.

Technical advantages of the declared object in comparison with the prototype is that the blades of the augers are made in the form of a closed top surface: round pipes, square or other profile located on the cylindrical surface of the helix.

Another difference is that the input device is set to the confuser and diffuser for the concentration of flow in pipes. Another difference is that the output tubes are equipped with nozzles having the profile of the suction pipe and positioned tangentially to the circumference of the cylindrical through which ernesti.

This enables you, using this design, to get more specific power from the water flow and to increase its efficiency.

The drawing shows the design of the present invention, view its profile. To simplify drawn traffic flow in sections of one pipe and out through the tips of the pipe.

Mini-hydropower plant comprises a cylindrical surface of the cylinder 1, in which the helix is placed, for example, round pipe 2, the output ends 3 which are tangent to the cylinder and equipped with lugs 4, and the input ends and symmetrically arranged around the circumference of the cylinder. The cylinder is connected confuser 5 and the diffuser 6, and the confuser is connected to an electric generator 7, for example, the cable 8, the other end 9 which may be connected with a similar design to increase the overall capacity of Mini-hydroelectric power station.

Mini-hydroelectric works in the following way. The input hydraulic flow "V"simultaneously reflected from the outer surface of the confuser 5, the maximum diameter of the cone is equal to the diameter of the cylindrical surface and the inner surface of the diffuser 6, the minimum diameter of which is equal to the sum of the diameter of the cylindrical surface and two pipe diameters, completely at the same time fills all of the pipe 2. The flow moves inside the pipe on the helix, creating a pressure to the E. in the pipes.

Because the surface is closed, all flow pressure is fully transferred the helix spirally developed on the inner surface of the pipe, making it necessary to rotate the entire structure. Through the cable 8, the rotation is transmitted to the low speed generator 7 or multiplier, if you use a high-speed generator.

The location of the pipe in a curved path - helix (one-turn helix) allows maximum use of the kinetic energy of the flow.

The entire flow that has passed through pipe 2, is thrown out from their ends 3 through the nozzles 4, placed tangentially to the circumference, while the reactive component of the torque of this design.

Profiles of lugs, in addition, made with the extension on the profile of the suction pipes used at the output of the turbines.

The proposed solution allows to get the thread more power due to the simultaneous use its kinetic energy is converted into pressure, and due to the reactive component of the stream.

The device is recommended for use in extended sections of canals, rivers or streams having a velocity of more than 1.5 meters per second.

The necessary power from the flow can be obtained by the serial connection of such structures to the output end 9 of the rope. Vestures can use a chain or other flexible hinge connection between these structures.

SOURCES of INFORMATION

1. Pancakes B. C. Chain HPP. M., 1963, S. 16, Fig.8,b (similar).

2. Novikov Y. M. Opportunities hydroelectric dam. Scientific and technical collection "Energy and environment", S. 81. Executive editor Nakoryakov C. E., Novosibirsk, 1988, ed. Institute of Thermophysics SB RAS (similar).

3. Patent for useful model №61808 "Rotary turbine. Options". Author Popov A. I. (similar).

4. Patent for useful model №61809 "Torsiona turbine". Author Popov A. I. (similar).

5. Description screw HPP "Future Energy Yorkshire" [electronic resource]. Mode of access: www.fev.org.uk(UK) (similar).

6. Patent for useful model №94642 "Dam screw hydroelectric power plant". The authors Popov A. I., Deklein S. E. (prototype).

1. Mini-hydro containing auger consisting of a cylinder with blades on its surface, and the cylinder is connected to the generator and is located along the water flow, characterized in that the blades are made of several tubes, which are evenly spaced over the surface of the cylinder along the helical pattern of the line to the cylinder is connected confuser with maximum cone diameter equal to the diameter of the cylinder and the cone, the minimum diameter of which is equal to the sum of the diameter of the cylinder and two pipe diameters on their input and output ends of the pipes are equipped with nozzles set at a tangent to the cylindrical surface.

2. Mini Gaspo p. 1, characterized in that the profile of the tips made on the profile of the suction pipe turbines.



 

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