Tidal hydroelectric plant

FIELD: power engineering.

SUBSTANCE: invention relates to hydroenergetics, to low pressure flows of seas, rivers and water outlets of hydro electric stations and reservoirs. A tidal hydroelectric plant contains a cylindrical body of the machine compartment with a gear box and electric generator of the tail hydroturbine with arms, mounted on its axis and the axis of rotation. On the upper part of the body is fixed a flat pylon, on the end of the pivot system and the axis of rotation. The body is suspended on a crossbeam in the passage of the catamaran for lifting the power station to the level of the servicing platform on the grooves of the support bridge pier, connected by the arch with a lifting mechanism. Arms of the hydroturbine are made short and wide sweptforward on the leading edge and with a concave surface in the form of a parabolic curve, and a convex surface of the tailpiece perforated with slanting slits.

EFFECT: reduces the depth of the low pressure power stations, increases the hydrodynamic quality of the hydroturbines arms, and ensures periodic lifting of the power station from the water.

3 cl, 4 dwg

 

The invention relates to hydropower, low-pressure currents of the sea (tides), rivers and spillways hydropower plants and reservoirs.

Known tidal power plant (see the book by Felix P. Paturi. The architects of the XXI century, Moscow: Progress publishers, 1980, p.68, Il), which contains a horizontal capsule unit with rotary blades of the impeller with double-sided turbine operation in which the generator is enclosed in a capsule with channels for air and water cooling and integrated into the gateway-hole tidal dam.

This tidal power station high cost of construction of the dam tunnel watercourses, high cost of electricity, low efficiency of turbine blades, the limited application of power.

The closest analogue of the present invention is (see kN. Lbergman. Tidal power in modern energy. M: Gosenergoizdat, 1961, p.34, Fig.3-7). This unit comprises a cylindrical housing streamlined body of revolution with a tail turbine with a long and narrow blades straight sweep. The hull in the bow with a gearbox and generator is opposed to the turbine, mounted on a vertical axis in a metal frame that is mounted on a reinforced concrete frame on the seabed.

At this plant the high cost of the e construction and maintenance at a great depth, low efficiency of the turbine is limited application.

Tasks to be solved by the invention is:

to reduce the depth of low-pressure plant;

- to increase the hydrodynamic quality of the blades of the turbine;

- install power plant on the suspension with its periodic rise out of the water.

The invention consists in the following. Tidal power plant comprises a cylindrical housing engine with gearbox and generator, tail water turbine with blades mounted on its axis, and the axis of rotation, in the upper part of the housing is mounted flat pole end with the hinge and the axis of rotation, the housing is suspended on the cargo beam in the span of the catamaran lifting power level service platforms for slots rack-bulls, United by an arch with a lifting mechanism, a catamaran made with rounded contours and together with the housing forms an underwater passage with the confused walls to increase backwater flow in its rear part, and the blades of the turbine are made short and wide with a backward sweep of the leading edge and a concave surface in the form of a parabolic curve, and the convex surface of the tail portion of the perforated oblique cracks, cracks in cross section have the shape of a sickle-Crescent and executed swept by the flow of the, on the convex surface covered across the ribs.

Drawings

Figure 1 - General view of the plant.

Figure 2 - scheme of the suspension power catamaran.

Figure 3 is a cross section along a-A.

Figure 4 is a view along arrow B (maximized).

The power plant includes a housing 1 (Fig 1), it includes the electric generator 2 and the gear 3. In the upper part of the housing is mounted pylon, a guiding apparatus with an acute angle α reverse sweep on the leading edge. Power pole 4 by means of the axial hinge rotation and yaw 5 and power hinges hung on a cargo beam 6 in the alignment racks-bulls 7 in the span of a catamaran 8 (figure 2). On axial hinge 5 are annular electrosoft 9 removal of electric current from the electric cable 10. In the fore part of the hull mounted the float 11 and the tail part of the turbine - ballast 12, balancers, providing the angle of attack of the hull to the incident flow. On the axis turbines mounted blade 13 with an acute angle β of the end edge with a slit 14 and ribs 15 (Fig 3). Figure 4 indicated laminar sublayer 16 formed under the pressure of the core flow on the concave surface at the tail end of the blade. Figure 1 is a marked shoulder yaw N units of the plant in a vertical plane along the stream.

Work

Tidal power system vertically mechanismo is immersed in water. The deceleration of flow in the turbine is the center of the hydraulic pressure from the shoulder yaw N orientation of the plant on stream and provides the optimum angle of attack of the hull to the incident flow. Torque on the axis of the turbine is transmitted to the axis of the generator. Cooling of the generator is air circulation through the channels of the pylon.

This design will allow for two-way operation of the plant and its suspension in the span of the bridges, as well as increase the hydrodynamic quality of the turbines.

1. Tidal power plant containing a cylindrical housing engine with gearbox and generator, tail water turbine with blades mounted on its axis, and the axis of rotation, characterized in that the upper part of the housing is mounted flat pole end with the hinge and the axis of rotation, the housing is suspended on the cargo beam in the span of the catamaran lifting power level service platforms for slots rack-bulls, United by an arch with a lifting mechanism and the blades of the turbine are made short and wide with a backward sweep of the leading edge and a concave surface in the form of a parabolic curve and a convex surface of the tail portion of the perforated helical slits.

2. Power plant according to claim 1, otlichayas the same time, the catamaran is made with rounded contours and together with the housing forms an underwater passage with the confused walls to increase backwater flow in the stern part.

3. Power plant according to claim 1, characterized in that the slit in the cross section have the shape of a sickle-Crescent and executed swept by the stream, while on the convex surface covered across the ribs.



 

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