Underwater river-run hydroelectric power plant

FIELD: power industry.

SUBSTANCE: underwater river-run hydroelectric power plant includes housing 1 with convergent supply and divergent discharge water passages, working chamber 4 with impeller placed in it. Working chamber 4 is toroidal-shaped. Impeller is made in the form of circular screw 5. The latter is kinematically connected in series to carrier 7, multiplying gear 8 and electric generator 9, which are arranged in air dome 6 located in central part of working chamber 4.

EFFECT: increasing efficiency due to increased torque moment of impeller shaft when obtaining electric power as a result of conversion of kinetic energy of water flow passing through river-run power plant irrespective of seasonal state and economic belonging of water reservoir.

2 dwg

 

U channel power refers to power plants that convert the kinetic energy part of the water flow of the river into electricity, and can be used in the hydropower industry.

There are hydroelectric devices (impellers, turbines) to convert flow energy into mechanical energy of rotation of the shaft, for example, patent of the Russian Federation: №2030627, 2059103, 2061185, 2065076, 2066394, 2080476, IPC F03B 7/00.

Known chain HPP containing a rope attached to it impellers. One end of the rope is fixed with freedom of rotation on the fixed bearing, protruding above the surface of the water flow, the other end of the rope fastened to the armature of the generator, which is the second fixed bearing. Water flow rotates the impellers with rope and anchor generator (RF application No. 94024157).

The specified analog works in a narrow range of conditions (mountain rivers and bridges, navigation period), has a low efficiency and may not be applied during the whole year, which is the main reason for its limited use.

Known hydropower plant (prototype), designed to convert the energy of the river flow, which can be installed on any river and work around the clock (patent RF №2171910, F03B 13/00). Hydro has established in the mainstream coop is laid, consisting of base plate, side walls and floors with room for gear with the electric over the installation gidrokolesa, side wall structures from the entrance and exit of water have extensions forming respectively confused, work and diffuser channels. One of the side walls has a working channel of the sector semicircular notch at gidrokoleso, which is mounted in bearing assemblies above the river bottom and lower edge of the possible ice cover, respectively, lower in the base plate and the top is closed. Gidrokoleso made hollow, consisting of rigidly mounted on the shaft two parallel horizontal disk, the periphery of which and between them evenly set of blades with a length of not more than 2/3 of its radius at an angle from 0 to 180°. Gidrokoles with their gearboxes and generators along the length of hydroelectric power in its working channel may be several. The disadvantages of the prototype include the fact that:

1 - stroke - duration of active interaction with the water flow is less than 25% of the total turnover of the impeller;

2 - the total area of the blades, actively interacting with the water flow is about 25% of the total area of all the blades;

3 is protruding above the surface of the structural elements of the device donkey is inaut shipping and navigation period require special signal equipment.

Due to these defects, the prototype has a low - no maximum efficiency of the device for converting the kinetic energy of the water flow.

The technical result of the proposed solution is to increase the coefficient of performance (COP) due to the increased torque of the shaft of the impeller when receiving electric power by converting the kinetic energy of the water flow passing through the power plant comprises three regardless of seasonal conditions and Housewares orientation of the reservoir.

The technical result is achieved that is installed in the riverbed under the water the device run-of-river hydropower plants, including a housing with a tapered inlet and an expanding outlet conduits and a working camera placed in it by the impeller according to the invention, the working chamber is toroidal in shape, and the impeller is in the form of an annular screw, with ring screw kinematically connected in series with the planet carrier, a multiplier and a generator placed in the air bell, located in the Central part of the working chamber.

The interaction of the flow with the impeller in the form of an annular screw is performed for nearly 75% of the total turnover of the latter, which is more fully who I power transmission water movement to the impeller in the form of an annular screw, and thus provides higher efficiency of the power plant.

Accommodation HES under water does not impede navigation and economic use of the river.

The proposed u-run of river hydroelectric power plant (PGAS) shown on the drawings. Figure 1 shows a vertical section of the device of figure 2 - section a-a figure 1.

U run of river hydroelectric power plant (PGAS) includes a housing 1, a narrowing of the inlet conduit 2 extending discharge conduit 3, the working chamber of the toroidal shape 4, the impeller in the form of an annular screw 5, the air bell 6, led 7, the multiplier 8, the generator 9.

U run of river hydroelectric power plant operates as follows.

When lowered into the river bed body 1 under the action of the kinetic energy of the stream of water flows through a narrowing of the inlet conduit 2, in which it is dispersed, on the impeller in the form of an annular screw 5, placed in the chamber toroidal form 4, and causes it to rotate around its axis. Develop torque through the led 7 is transmitted to the multiplier 8, which increases the rotational speed of the output shaft, resulting in a rotation of the rotor of the generator 9, is installed in the air bell 6. Descending from the impeller in the form of an annular screw 5 water by expanding the outlet conduit 3 is reset in the bed of the stream.

U-channel hidroelektra the station, includes body with tapering inlet and an expanding outlet conduits, a working camera placed in it by the impeller, characterized in that the working chamber is toroidal in shape, and the impeller is in the form of an annular screw, with ring screw kinematically connected in series with the planet carrier, a multiplier and a generator placed in the air bell, located in the Central part of the working chamber.



 

Same patents:

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FIELD: machine building.

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10 dwg

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6 dwg

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