Tidal power station

FIELD: power engineering.

SUBSTANCE: tidal station comprises dam with several water passages each with hydraulic turbine with blades and water flows forced through its hydraulic turbine, and engine room with electric generator. All hydraulic turbines are integrated by common shaft with electrical generator to make the set, common shaft being arranged along the dam. Water passages are composed of Z-like channel with mid part parallel with common shaft. Inlet and outlet section of S-like channels are inclined to common shaft. Electrical generator is rated to total power of all hydraulic turbines of the set. Integral design of engine room allows decreasing the dam width and application of high-power generators, hence upping the tidal station efficiency.

EFFECT: simplified design.

1 dwg

 

The invention relates to hydropower, specifically for low-head hydroelectric power plants, including tidal power plants.

Tidal fluctuations in water level in the oceans and seas of the planet predictable. The main periods of these oscillations is "per diem" (at high latitudes) and "half-day" - a period of 12 h 25 min, Raised to the maximum height at high tide the water is separated from the sea by a dam with the formation of the basin. During high tide and low tide, the water mass flow through the turbine rotates the generator that produces electrical energy.

Known (analog) tidal power plant the Wound with a capacity of 240 MW, located in the estuary of the river La the Wound, flowing into the Gulf of Saint Malo (Brittany, France), with horizontal capsule units (Twidell J., The Weir A. Renewable energy sources: Lane. from English. - M.: Energoatomizdat. 1990, p.319; Bernstein LB Experience operating a horizontal axis units (capsule and mine), M.-L., 1966; Zebra R. Energy tide and tidal power. TRANS. from French., M., 1961; Waldeck A.I. of the Electric machine. A textbook for students of the College. technology. educational. institutions. Publication 2nd Rev. and ext. L., "Energy", 1974, str). Capsule hydrogenerator with horizontal shaft across the dam, enclosed in a waterproof envelope (kapsa is, which on the outer side is flown by the flow of water passing through the turbine (impeller).

This design applies not only to tidal power plants, but also on low-pressure hydro-electric plants. For example, in Kyiv HPP work 20 capsule generating units to 17.5 MW each. The disadvantage of this device is similar is that each hydrogenerator relatively low power has its capsule, made in the form of the engine room. In addition, this design significantly increases the width of the tidal power dam and prevents the use of power generators large power with the best technical and economic parameters.

Known (prototype) tidal power (RF Patent No. 2359083, IPC E02B 9/08; F03B 13/12; F03B 13/26 published 20.06.2009)containing a cylindrical housing of the engine room with the generator, tail water turbine with blades mounted on its axis.

Obviously, the General scheme of the prototype similar capsule hydrogenerator. Therefore, the drawback of the prototype is the same as the device-similar, i.e. each hydrogenerator relatively low power has its capsule, made in the form of the engine room. In addition, this design significantly increases the width of the tidal power dam and not what allows to use the power generators large power with the best technical and economic parameters.

The technical problem to be solved by the proposed device consists in the simplification of the tidal power station. The technical result consists in a single structural execution engine tidal power, allows to reduce the width of the dam and allows you to use the power generators large power with the best technical and economic parameters, which, in turn, improves the efficiency and lower the cost of tidal power plant.

This technical result is achieved by the fact that in the known tidal power station, containing the dam with multiple culvert channels with his turbine with blades each with a flow of water passing through the turbine, the engine room with the generator, according to the invention, all turbines United by a common shaft to a generator of the group, and the shaft is located along the dam, culvert channels made in the form of Z-shaped zigzag to the middle part, parallel to the common shaft, and the input and output sections of the Z-shaped zigzags culvert channels are tilted to a common shaft, and the generator is made on the total the capacity of all hydro group. In addition, tidal power plant contains several groups.

The drawing shows a General view of the pre the proposed tidal power plant as an example, with three discharge channels. Tidal power plant contains dam 1 with three discharge channels 2. Culvert channel 2 contains a turbine with 3 blades and the flow of water 4, passing through the turbine 3. Culvert channel 5 includes a turbine with 6 blades and the flow of water 7, passing through the turbine 6. The drain channel 8 contains respectively the turbine 9 with the blades and the water stream 10 passing through the turbine 9. Turbine 3, 6 and 9, United by a common shaft 11 generator 12, which is located in the engine compartment 13, form a group. The total shaft 11 is located along the dam 1 and rotates in bearing assemblies 14. Culvert channels 2, 5 and 8 are made to the configuration in the form of Z-shaped zigzag with a middle part that is parallel to the common shaft 11, which provides the flow of water through the turbine and the input and output sections of the Z-shaped zigzags culvert channels are tilted to a common shaft 11. This is somewhat longer than the length of the discharge channels, but can reduce the width of the dam, thereby reducing construction costs. The generator 12 is performed on the total capacity of all turbines. When the length of the dam there are several groups. Input and output of each of the discharge channels 2, 5 and 8 has the shields, valves 14, needed not only to regulate the flow of water, but also to ensure the repair of each culvert channel separately.

The proposed device operates as follows. With the increasing tidal waves open panels-gates 14 in a flume channels 2, 5 and 8, is made with a configuration in the form of Z-shaped zigzag with a middle part that is parallel to the common shaft 11. This ensures the passage of each of the water flow through the turbine is orthogonal to its plane of rotation. During the rotation of each of the turbines 3, 6 and 9 develops its rated power. These power summarizes the common shaft 11, which, in turn, rotates the generator 12, is made on the total capacity of all turbines. However, it is known that an increase in the installed capacity of electric machines (including generators) coefficient of performance (COP) is increasing (Waldek A.I. of the Electric machine. A textbook for students of the College. technology. educational. institutions. Publication 2nd Rev. and ext. L., "Energy", 1974, str, table 19-2 "Basic data of three-phase generators of the plant "electric power").

The problem is solved by the proposed device. Tidal power plant simplified. Is it in the exception capsular structures of the tidal power plant, which allows the mind is isit the width of the dam and allows you to use the power generators large power with the best technical and economic parameters, that, in turn, improves the efficiency and lower the cost of tidal power plant.

Tidal power plant containing a dam with multiple culvert channels with his turbine with blades each with a flow of water passing through the turbine, the engine room with the generator, characterized in that all turbines United by a common shaft to a generator of the group, and the shaft is located along the dam, culvert channels made in the form of Z-shaped zigzag with a middle part that is parallel to the common shaft, and the input and output sections of the Z-shaped zigzags culvert channels are tilted to a common shaft, and the generator is made on the total capacity of all hydro group.



 

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FIELD: engines and pumps.

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FIELD: power engineering.

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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

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