Hydro power plant


(57) Abstract:

The power plant is designed to generate electrical energy by converting the potential energy of water. The energy Converter of water in the energy of the air stream consists of several siphon pipes through which water flows from the top of the water in the lower reach. The upper portion of each of the siphons, i.e., the region with the highest value of the vacuum is supplied by a separate duct collector, where is the air turbine connected to a generator. The design of the plant allows to extend the scope of hydroelectric dam. 2 Il.

The invention relates to techniques for the generation of electric energy, in particular to non-traditional sources of energy.

A device that converts the energy of sea waves into electrical energy (see Kirillin C. A. Power. The main problems. - M.: Knowledge, 1990, S. 72-73), which is floating on the water platform, divided into open bottom section filled with air. Waves passing under the platform, alternately compress in the sections of the air. Installed on a flow path of air flowing from the partition budet to convert wave energy into electrical energy.

The disadvantages of this device are small power output from the wind? as well as bulkiness, because this device must have a large linear dimensions, so that vibrations of the platform under the action of the waves were small. In addition, the direction of flow of air from one section to another will be changed periodically, and this leads to periodic stopping of the air turbine and generator, which further reduces the capacity of the power plant and requires the use of special reversible generator.

Also known hydropneumatic power plant (A. M. Gorlov. A New Opportunity for Hydro: Using Air Turbines for Generating Electricity. Hydro Review, September 1992, Volume 11, Number 5), consisting of a sealed hydrovodone Converter that converts the energy of water in the energy of the air stream, dam, creating a drop of water relative to the bottom of the water and power unit, which houses the air turbine generators. The main element of this plant is air and water tight Converter, constructed of concrete and placed in the river. It can be performed one - and two-chamber. According to the author the development of more effective is the double Converter consisting of two identityrelated system of inlet and exhaust valves, which provide emptying one camera when filling in another and Vice versa. When one chamber is filled, the air out through the air duct opens into the chamber, which is emptied by turning this air turbine.

In this device the direction of the air flow in the duct will periodically change, which will lead to the next cycle of operation of the turbine and generator: acceleration - maximum speed - deceleration of the rotation - stop, etc. on the same cycle, which leads to a decrease of the power plant capacity and also requires the use of a reversible generator. According to the author of the prototype when the level difference of the upper and lower pools of 6.5 feet (1,98 m) pressure (pressure), which moves along the duct, the air flow is 13 feet water column (3,96 m of water.article = 38,86 kPa) for a more perfect triple LNB (see ibid.).

The Converter of this plant, especially a two-chamber, is quite complex, bulky design, which includes four alternately opening and closing the shutter, axles and hinges which are constantly in the water, which reduces the reliability of this device is x and small rivers).

The present invention is to increase the power and extend the scope of its application.

This technical result is achieved in that the energy Converter of water in the energy of the air flow is made in the form of a battery siphon pipelines, the upper part of each of which is connected by a duct with the common collector, in which is located an air impeller.

Run the Converter in the form of siphons can dramatically increase the capacity of the power plant, because the vacuum in the upper part of the siphon is 7 metres column of water (68,65 kPa) (see Chugaev P. P. Hydraulics. - L.: Energoizdat, 1982, S. 222), and to achieve such values of vacuum with a small level difference in the upper and lower pools, because the magnitude of the vacuum in the siphon depends mainly on the height of the raising of the upper part of the siphon above the water level upstream and is determined according to the following dependence (see ibid., S. 221):

< / BR>
where h' is the height of the raising of the upper part of the siphon above the water level upstream;

- full drag coefficient that takes into account the pressure loss from the entrance to the siphon from the top;

v - velocity of flow of water in the siphon;

g is the acceleration slobodnog the mini-station. Ed. Karelin C. J., Krivchenko, J. - M., 1987, S. 21):

N = gQHthe CN.about.,

where is the air density;

g - free fall acceleration;

Q is the flow rate of the air flow;

H - current pressure (pressure differential);

the CN.about.- Energy efficiency equipment.

Hydropneumatic the concept of electricity production according to research (see A. M. Goriov. A New Opportunity for Hydro: Using Air Turbines for Generating Electricity. Hydro Review, September 1992, Volume 11, Number 5) is effective when the pressure on the dam up to 13 feet (3,96 m), and at high pressures preferably hydraulic turbine. As can be seen from the foregoing, under these conditions, the differential pressure, which moves the air flow, and hence the flow rate of the air flow above the siphon (with the same diameter of the duct). When this air flow, and hence the power station can be magnified by increasing the number of siphons in the battery. The latter is limited only by the flow of the river.

Besides made siphons can be quite simply out of the ordinary steel or plastic pipes. When this is not required, as in the case of the construction of the prototype, diversion of the river in a different direction.

To install the proposed power is by drops (thresholds), that expands the scope of its application.

In Fig. 1 shows a General view of the hydro-power station, and Fig. 2 is a diagram illustrating the principle of its work.

The design consists of a dam 1 on which is fixed the battery siphon pipes 2, each of which through duct 3 communicates with the manifold, where the air turbine 4, and further with the atmosphere. The vacuum pump 5 is connected to the mouth of the duct and connected with the latter by means of the valves 6 and 7. All of these components of the plant except siphons and most of the ducts are located in unit 8.

Hydro power plant operates as follows. Before starting the plant closes the valve 7 and the valve 6 is opened and turns on the vacuum pump 5, creating siphons pressure less than atmospheric. As a result, after the siphon pipes 2 starts the movement of water from the upper pool at the bottom. After that, the valve 6 is closed and the valve 7 is opened and due to the pressure difference arising due to the presence of vacuum in the siphon starts the movement of the air flow from the atmosphere through an air turbine 4 and the duct 3 in the siphon pipes 2. Po energy. In order to avoid stopping the flow of water in pipes 2 air supply ducts 3 is regulated by valve 7 and should not reduce the water consumption by more than 0.2 maximum when each pipeline 2 is a full cross-section (without supply air).

Hydro power plant, including low-head dam, the energy Converter of water in the energy of the air flow, the air turbine, characterized in that the energy Converter made in the form of battery siphon pipelines, the upper part of each of which are connected by ducts with the manifold, where the air turbine.


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