Run-of-river hydropower unit

FIELD: power industry.

SUBSTANCE: run-of-river hydropower unit includes base with posts on which there rotated is shaft of wheel with carriers on the ends of which axles with blades are installed. On edges of blades there fixed are tie rods having on their ends the rollers rolling in turn along "П"-shaped guide tracks of side members, which are placed inside near the above carriers. "П"-shaped guide tracks are made in circumferential direction. Centre of circle of guides is offset downwards from shaft axis. Central holes are cut in side members to allow the passage of axes of blades. Guides in upper part have L-shape due to the cutout.

EFFECT: simplifying the design, increasing power, improving reliability and durability of hydropower unit.

2 cl, 9 dwg

 

The invention relates to hydropower and serves, in particular, to convert the energy fluvial river flows into electrical energy.

Known for small and micro hydro power plants with a capacity of 1...5000 kW at pressure 2...400 m from the propeller, diagonal, axial, radial-axial, bucket turbines [http://ovis.khv.ru/index 2...].

The drawback of such HPP is the need for large elevation or the construction of the dam.

Known hydraulic jet turbine in the form of a wheel, the inner surface of each blade which has a semicircular curved section, and the outer streamlined plot (RF Patent No. 2138680 C1 IPC F03B 7/00, publ. 27.09.1999).

This turbine has a small size and power.

Known dam hydropower plant on piles with vertical blades and guides elliptical openings, blades connected by traction chains installed on drive and idler (RF Patent No. 2062351 C1 IPC F03B 9/00, publ. 20.06.1996).

Installation is a complex chain drive and low reliability.

Famous all-season hydroelectric dam, containing ruined the flow of the vertical body of the rotor divided by the drums with offset around the circumference of the blades of three kinds: inner wing, rotary speed and directional installed in the fly (RF Patent No. 2171912 C2, IPC F03B 17/06, 13/10, publ. 10.08.2001).

This hydroelectric power plant has a complex structure, not reliable in the wet environment of gear transmission mechanisms and the inability of the serial connection of several working bodies.

Known hydropower plant conveyor-type blades which at the free end are the rollers rolling along the horizontal guides (RF Patent for useful model №65578 U1, IPC F03B 9/00, publ. 10.08.2007).

The installation also has a low reliability.

Known gidroenergoproekt containing installed on the shaft of the impeller with the blades and the mechanism of their rotation, made in the form of a system of mobile and fixed relative to the axes of the sprockets with a gear ratio of 2:1, connected by a chain transmission (RF Patent No. 2016220, IPC F03B 7/00).

Chain transmission running in the water, and the durability and reliability of its low.

Also known turbine for run-of-river hydropower plant, containing a shaft mounted on two supports and two opposing rectangular blade, placed at equal distance from the shaft at the ends of the carrier and rotatable around its axis by means of the drive mechanism, consisting of cylindrical gears (RF Patent No. 2131994 C1 IPC F03B 7/06, 7/00, publ. 20.06.1991, prototype)

The disadvantages of this turbine are small what s the size of the blades, due to the dependence on the size of the gears of the drive mechanism, and therefore, a small capacity turbines.

The objective of the invention is to simplify the construction, increase the capacity, reliability and durability of gidroenergoproekta.

The technical result is achieved by the fact that in rukovom gidroenergoproekta containing the base with the stand, which rotates the shaft of the wheel measured including carriers radius of rotation R2and the ends of which are mounted the axis with blades of length l and width b, the edges of the blades attached extensions having at the ends of the rollers, alternately rolling over the U-shaped guide tracks on the side walls inside the next measured including carriers, and U-shaped guide track is made of a circle of radius R1=R2+e, and the center of the circle guide is offset from the axis of the shaft down on the amount of eccentricity e equal to 0.25, the value of the width of the blade b, and the sides cut out the center hole for the passage axes of the blades, guides at the top have l-shaped form due to the cut. Sidewall at the periphery for rigidity, the parallelism between them and perpendicular to the base tightened stops.

Figure 1 shows a side view of gidroenergoproekta; figure 2 - front view section a-a from figure 1; figure 3 is a view of the sidewall with the guide track; nafig - a pair of end axis of the blade head carrier; figure 5 - pair end stretch of the blade with the roller U-shaped guide track; figure 6 - the blade in the cut b-B; 7 - section-In sides; on Fig - section G-G sides; figure 9 - diagram of the hydropower plant.

On racks 1 base 2 gidroenergoproekta on Teflon bushings 3 rotates the shaft 4 with installed rigidly measured including carriers 5, the ends 6 which is fixed axis 7, pin 8 which mate freely through the bore of the sleeve 9 with the heads 6 of the carrier 5. On the shaft 7 rigidly mounted blades 10 of length l and width b, with the edges 11 of 12 marks. The blades are rigidly rounding the marks 12 and the axis 7. On the trunnions 13 of stretch marks freely mounted rollers 14. Within the next measured including carriers still hard-coded sidewall 15 having guides U-shaped tracks 16 on which roll the rollers 14 one of the marks of the blade. At the top of the tracks have a G-shaped 17 due to the presence in the sidewall 15 a round Central hole for movement axis 7 of the blades 10. Parallelism and the rigidity of the installation of the side walls is achieved by stops 18 and ribs. Modules gidroenergoproekta 19 are connected sequentially coupling 20. In building 21 HPP installed generator 22, a multiplier 23, a tapered Overdrive gear 24 and other equipment.

Rus is inhibiting gidroenergoproekt works as follows. For carrier axis, and the blades of length l and width b in the side walls 15 with holes of radius R2+h (where R2is the radius of rotation of the carrier, h - height of the head was taken from the axis) with the center axis of the shaft. Circular guides 16 of the side walls are made with radius R1=R2+e with the center below the axis of the shaft by the amount of eccentricity e=0,25b, which corresponds to the lower part of the distance 0,5b. Under the action of water flow υbwater wheel-gidroenergoproekt rotates counterclockwise. The pair of blades 10 with the guide tracks 16 of the side walls 15 through the rollers 14 carried out in such a way that each blade except for the top position, forms a normal force, providing maximum torque about the axis. During rotary motion of the blades upward from position 1 to position 4 blades paired freely through the rollers of butt stretch marks one hand. In the upper position of the U-shaped guide track cut limiter is only the upper part of the track. Upon further movement of the rollers on the other side of the stretching of the blades included in the U-shaped guide and the force from the flow of water takes the other side of the blade. Forces F1F2F3F4F6F7F8effects of water flow on the blades form a torque shaft relative, in addition to top the situation.

When you wheel at each moment of time the blades take a certain position at which the obtained maximum torque.

Compared with the prototype ryslavy gidroenergoproekt has larger blades, modules gidroenergoproektom are connected in series, and generates significantly more power.

1. Ryslavy gidroenergoproekt containing the base with the stand, which rotates the shaft of the wheel measured including carriers radius of rotation R2on the ends of which are mounted the axis with blades of length l and width b, wherein the edges of the blades attached extensions having at the ends of the rollers, alternately rolling over the U-shaped guide tracks on the side walls inside the next measured including carriers, and U-shaped guide track is made of a circle with radius R1=R2+e, a circle center guide is offset from the axis of the shaft down on the amount of eccentricity e equal to 0.25, the value of the width of the blade b, and the sides cut out the center hole for the passage axes of the blades, guides at the top have l-shaped form due to the cut.

2. Gidroenergoproekt according to claim 1, characterized in that the sidewall at the periphery for rigidity, the parallelism between them and perpendicular to the base tight stops.



 

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