RU2453726C1 - Run-of-river pumping hydraulic power plant - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: run-of-river pumping hydraulic power plant comprises a hollow shaft 1, double-wing blades 20 of sail type, joined with the shaft 1 with the help of carriers 4, displacement pumps of double action. On the axis 4 of double-wing blades 20 there are levers 6, hingedly joined by means of traction bars 8 with a crosspiece 9 at the end of the pump stem. The discharge chamber 16 of pumps by means of pipe sections 17 is hydraulically connected with a hollow shaft 1. Double-wing sail-type blades 20 of durable thick hydrophobic cloth have larger length compared to the axis 5 of blades 20.

EFFECT: water supply and power generation by one plant.

7 dwg

Description

The invention relates to hydropower and serves, in particular, to convert the energy of riverbed river flows into electrical energy and to raise water.

A rotary water lift is known that uses the energy of the flow of water in rivers to raise water and contains a shaft with a water wheel, a spiral pipe with a cap, lip seal, a water cap (Tsiklauri D.S. Hydraulics, agricultural water supply and hydraulic power plants. - M.: Stroyizdat. - 1970. - Pp. 155-157).

This setting is applicable only on small rivers.

Small and micro-hydroelectric power plants with a power of 1 ... 5,000 kW for pressures of 2 ... 400 m with propeller, diagonal, axial, radial-axial, bucket turbines are known (http://ovis.khv.ru/index 2 ...).

The disadvantage of such hydropower plants is the need for a large difference in elevation or the construction of a dam.

A known hydraulic turbine for a channel hydropower plant, containing a shaft mounted on two supports, and two opposing rectangular blades placed at an equal distance from the shaft at the ends of the carrier and rotated around its axis by means of a drive mechanism consisting of cylindrical gears (RF patent No. 2131994 C1, IPC F03B 7/06, 7/00, published on 06/20/1991).

The disadvantage of this turbine is the small size of the blades due to their dependence on the size of the gears of the drive mechanism and, consequently, the small capacity of the turbine.

A jet hydraulic turbine in the form of a wheel is known, the inner surface of each blade of which has a semicircular curved section, and the outer one is a streamlined section (RF patent No. 2138680 C1, IPC F03B 7/00, published on 09/27/1999).

This turbine also has small size and power.

Known damless hydropower installation on piles with vertical blades and guide openings of an elliptical shape, the blades are connected using traction chains mounted on the drive and tension sprockets (RF patent No. 2062351 C1, IPC F03B 9/00, published on 06/20/1996).

The installation has a complex chain drive and low reliability.

Known damless all-weather hydroelectric power station containing a vertical rotor casing ruined into the stream, divided into drums with three types of blades displaced around the circumference: inner casement, rotary step and weather vane installed in the stand (RF patent No. 2171912 C2, IPC F03B 17/06, 13 / 10, published on 08/10/2001).

This hydroelectric power station has a complex structure, gear gears insufficiently reliable in a humid environment and the inability to connect several working bodies in series.

Known hydropower installation of the conveyor type, the blades of which at the free end have rollers rolling along horizontal guides (RF patent for utility model No. 65578 U1, IPC F03B 9/00, publ. 10.08.2007).

The installation also has low reliability.

A known hydroelectric power unit containing an impeller mounted on a shaft with blades and a mechanism for their rotation, made in the form of a system of sprockets moving and stationary relative to their axes with a gear ratio 2: 1, interconnected by a chain transmission (RF patent No. 20166220, IPC F03B 7/00 )

The chain drive operates in water, and the durability and reliability of the unit are low.

The objective of the invention is the supply of water and the generation of electrical energy in one installation.

The task is achieved by the fact that in a channel water-lifting hydropower installation containing a hollow shaft, two-wing sail type blades connected to the shaft with a carrier, double-acting piston pumps, according to the invention, levers are mounted on the axis of the double-wing blades, pivotally connected by means of rods with a cross at the end of the pump stem, and the discharge cavity of the pumps is hydraulically connected to the hollow shaft by means of pipe sections, and the two-winged sailing blades are made of strong, dense, hydrophobic fabric have a greater length than the axis of the blades.

In addition, elastic cords and cables with a length equal to the length of the fabric are embedded at the ends of the sailing blades.

When moving along the flow, the sash opens, against the flow - closes, thereby pumping water into the hollow shaft and creating a torque (torque) on the shaft.

Figure 1 shows a sectional side view of the working module of the installation;

figure 2 is a top view in section aa from figure 1;

figure 3 is a view B of the cross;

figure 4 - the position of the bivalve blades in different positions and the action of forces on them, creating torque on the axis;

figure 5 is a view of the valve with a limiter;

figure 6 is a view of bivalve blades in the folded position;

Fig.7 is a diagram of a water-lifting-hydropower installation.

The installation module consists of a tubular (hollow) shaft 1, rotating on the fluoroplastic bushings 2 of the supports 3. In the module next to the supports, two bilateral carriers 4 are rigidly mounted on the shaft radially at the same level, the ends of which have holes with bushings into which axle axles 5 are inserted 5 Four levers 6 are freely mounted on the axis 5 on the bushings in pairs, the corresponding ends of which are kinematically connected by two braces 7 and, using four rods 8, are connected to the cross 9, centered on the end of the rod 10 of the double-acting piston pump 11 with p Piston 12. The piston pump has two suction valves 13, which are protected from clogging by the mesh 14, and two discharge valves 15, the discharge cavity 16 of the pump is hydraulically connected to the tubular shaft 1 by means of a pipe 17. The axis of the pump 11 is in the same plane as the axis 5 of the sail sash. The poppet valve stems 18 are prevented from falling out arbitrarily by the restrictive ring 19. Bivalve sail blades 20 of a strong, dense, hydrophobic fabric are fixed on the axis 5. The length of the blades 20 is greater than the length of the stretch marks 7. The ends of the blades 20 cover the elastic cord 21 and the restrictive cable 22, connected with the ends of the levers 6. The length of the cable is equal to the length of the fabric of the sailing blade. The shafts 1 of the modules 23 are rigidly interconnected by couplings 24. A generator 26, a multiplier 27, a bevel gear 28 and other equipment are installed in the building 25 of the hydroelectric power station. The connection of the discharge pipe 29, supplying water to the water tower 30 with the shaft 1 of the hydropower installation, is carried out through the cuff 31.

Installation works as follows. The blades of the unit rotate counterclockwise. In the upper position, the leaf flaps are closed (pressed) under the action of the water flow, the piston 12 of the pump 11 is in the extreme right state, water has been displaced from the rod cavity (right) into the tubular shaft 1, the left piston cavity is completely filled with water. With further rotation under the influence of the flow of water, the sailing blades 20 bend down, because their length is greater than the length of the stretch marks 7, until the cable 22 is fully tensioned, forces F ₅ and F ₆ are generated, which create a torque relative to the shaft. With further rotation, a water stream penetrates between the leaf blades, the leaf opens, the force is transmitted to the crosspiece 9 and the piston pushes water out of the subpiston cavity, water is sucked into the rod cavity, and a force F _{7 is} generated on the blade. In the lower position, the flaps are fully opened, the greatest force F ₁ and the maximum moment are obtained. With further rotation under the influence of the water flow, the flaps begin to fold, the sailing blades bend upward and forces F ₃ and F ₅ are generated, which create a torque. Folding and opening the valves leads to the operation of a double-acting piston pump. When the modules 23 are connected in series, a uniform arrangement of the blades in a spiral through equal angles is achieved. The torque is transmitted from a large bevel wheel mounted on the hollow shaft 1 on the small wheel, and from there through the multiplier 27 to the generator 26 that generates electricity. The water pumped by the pumps through the cuff connection 31 through the pipe 29 is supplied to the tank 30 and the consumer.

The proposed installation allows you to use the energy of the water flow in the river to supply water and generate electricity.

Claims (2)

1. A water-lifting and hydropower installation containing a hollow shaft, sail-type double-wing blades connected with a drive shaft, double-acting piston pumps, characterized in that levers mounted on the axis of double-wing blades are articulated by rods with a cross on the end of the rod pump, and the pumping cavity through the pipe sections is hydraulically connected to the hollow shaft, and the two-winged sailing blades of a strong, dense, hydrophobic fabric have a longer length than the axis of the blades. 2. Installation according to claim 1, characterized in that at the ends of the sailing blade elastic cords and cables are inserted with a length equal to the length of the fabric.

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