Unit for conversion of water flow energy under ice cover of river

FIELD: power industry.

SUBSTANCE: unit contains the bladed wheel immersed into the water flow under the river ice cover. The wheel by means of the shaft installed in the cylindrical housing on bearings is kinematically connected with the generator. The housing is fixed in a vertical position in the ice cover in such a way that its top part together with the generator is located above the ice cover surface. The top part of the housing is designed with formation of adjusting disk to which the generator is attached. The unit also comprises a base board with longitudinal rectangular cut in the middle, and two supports. The base board length is greater than the ice-hole length along the direction of the water flow in the river. By means of two longitudinal and transversal surfaces of the cut the board is able to interact with the external surface of the housing. Supports are able to interact with the base board and the adjusting disk and are placed perpendicular to the axis of symmetry of the basic board.

EFFECT: creation of the simple hydro-electric power plant with a possibility of its use for power generation utilising the energy of hydraulic flow of the river covered with ice.

2 cl, 3 dwg

 

The invention relates to hydropower, in particular to the design of devices to generate electricity by the energy of the hydraulic flow of the river, covered with ice.

Known installation for harnessing the flow of water "Tunguska", containing a moored floating body and the impeller, kinematically associated with the generator (and.with. THE USSR №1624198, F03B 17/06, 30.01.1991) /1/.

The disadvantage of this setup is that it is not suited for use in the winter, when the river is covered with ice.

The closest technical solution, selected as a prototype, is a plant comprising a blade wheel and kinematically associated with the generator. Moreover, the impeller is immersed in the water flow under the ice cover of the river so that its axis of rotation vertical. The blades of the wheel being configured to convert the flow energy of water into mechanical energy of rotational motion of the wheel. The wheel by a shaft mounted in the housing on bearings, kinematically connected with the generator, and the casing is vertically fixed in the ice cover of the river in such a way that its upper part together with the generator placed above the surface of the ice cover (Patent RU №2065076, F03B 7/00, F03B 17/06, 23.04.1993) /2/.

A disadvantage of the known device is that �but has a complex and expensive design.

The object of the invention is to provide a simple hydropower plant with the possibility of its use for electricity generation by the energy of the hydraulic flow of the river, covered with ice.

The invention consists in the following. The upper part of the cylindrical housing is formed with the formation of the installation disk, is attached to the generator. In addition, the apparatus further comprises a base Board having a longitudinal rectangular cutout in the middle and two stands. In this reference Board has a length that exceeds the length of the hole in the direction of flow of water in the river. By means of two longitudinal and transverse surfaces of the cut Board is able to interact with the outer surface of the cylindrical housing. And the said Board is placed horizontally on the ice cover of the river so that its symmetry axis coincides with the direction of flow of water in the river, and the neck is pointing down the flow of water in the river. Stands have the opportunity to interact with a support Board and a startup disk and placed perpendicular to the axis of symmetry of the base Board, one with side cut-outs on the Board, and the other from the opposite side. To enable immersive installation in water at varying comprises a stand having a different size� height. Together, this allows you to create simple hydropower installation with the possibility of its use for electricity generation by the energy of the hydraulic flow of the river, covered with ice.

Fig. 1, 2 and 3 shows a system for converting the energy of water flow under the ice cover of rivers, in particular in Fig. 1 is a longitudinal sectional view of Fig. 2 and 3 show respectively sections a-A and B-B.

The installation consists of an impeller includes blades 1, rigidly attached to the disc 4, made in the form of spokes, shaft 9, the cylindrical body 2 and the generator 3. The impeller is immersed in the water flow under ice cover 7 of the river and placed in such a way that its axis of rotation vertical. The blade 1 of the wheel is arranged to convert the flow energy of water into mechanical energy of rotational motion of the wheel. To do this, they are convex, for example hemispherical, shape, and are arranged so that in a section plane perpendicular to the direction of flow of water, a blade 1 is always directed bulge in the flow direction, and the other against the flow (the flow direction is shown in Fig. 1, 2 and 3 by the straight arrow). The wheel via a shaft 9 mounted in the housing 2 on bearings (not shown), kinematically connected to the generator 3 and the housing 2 vertical�about locked in the ice cover 7 thus, its upper part together with the generator 3 is placed above the surface of the ice cover 7. Upper part of the housing 2 is formed with the formation of the installation disk 4 is attached to the generator 3. In addition, the apparatus further comprises a base Board 6 with a longitudinal rectangular cutout in the middle and two supports 5. The Board 6 has a length that exceeds the length of the hole in the direction of flow of water in the river. By means of two longitudinal and transverse surfaces of the cut Board 6 is able to interact with the outer surface of the housing 2. And the said Board 6 is placed horizontally on ice 7 river so that its symmetry axis coincides with the direction of flow of water in the river, and the neck is pointing down the flow of water. Block 5 have the opportunity to interact with the Board 6 and the disc 4 and placed perpendicular to the axis of symmetry of the Board 6, one side of the notch on the Board for the housing 2 and the other on the opposite side, before the specified case. Block 5 that are included with the installation process can have different sizes in height.

The principle of operation is the following. Under ice 7 water moves in the direction shown by the straight arrow. The shape of the blades and their placement provide the ability to convert the flow energy in�s in mechanical energy of the rotational motion of the wheel. The wheel rotates in the direction of semi-circular arrow or clockwise (Fig. 2) due to the formation of torque because the force of the impact (pressure) of water flow on the blade 1 towards the convexity in the flow direction, is greater than the blade 1, the convexity of which is directed against the flow. This is because the blade 1 with the convexity directed against the flow, have more streamlined and therefore less resistance. The torque of the wheel is transmitted through the shaft 9 of the generator 3, which generates an electric current.

Installation install in stream water in the following order. Cut the hole 11 in the shape of a rectangle (Fig. 1 and 3), the dimensions of which provide the ability to skip the impeller beneath the ice cover 7. Immerse the wheel in the water, not reaching the ground 8 of the river. When the housing 2 is put vertically, pressing it to the bottom (the river) edge of the hole 11. After installation fixed in position by Board 6, which is placed horizontally on ice 7 river so that its symmetry axis coincides with the direction of flow, and the neck is pointing down the flow of water in the river. Because the Board 6 has a length exceeding the size of the hole 11 in the direction of flow of water in the river, its ends protrude beyond the edge of the hole 11. By d�wow longitudinal and transverse surfaces of the cut Board 6, interacting with the outer surface of the housing 2, is fixed in a predetermined position. Set block 5 between the Board 6 and the disc 4 is perpendicular to the axis of symmetry of the Board 6, one of which is placed from the side of the neck on a certain Board, and the other from the opposite side. While block 5 that are included with the installation, choose the height due to the depth of water in the river. After a while the hole 11 freezes, which additionally fixes the installation. Spring installation dismantle: tranq her from the ice.

On the basis of the proposed technical solutions possible to create a simple hydropower installation with the possibility of its use for electricity generation by the energy of the hydraulic flow of the river, covered with ice.

SOURCES of INFORMATION

1. AC USSR №1624198, F03B 17/06, 30.01.1991.

2. Patent RU №2065076, F03B 7/00, F03B 17/06, 23.04.1993. - the prototype.

1. Installation for converting the energy of water flow under the ice cover of the river that contains the impeller and kinematically associated with the generator, with the impeller submerged in the water flow under the ice cover of the river, the blades of the wheel being configured to convert the flow energy of water into mechanical energy of rotational motion of the wheel, the impeller via a shaft mounted in a cylindrical cor�truncated on bearings kinematically connected with the generator, and a cylindrical body vertically fixed in ice in such a way that its upper part together with the generator placed above the surface of the ice cover, characterized in that the upper part of the cylindrical housing is formed with the formation of the installation disc to a specified drive is connected to the generator, in addition, the apparatus further comprises a base Board having a longitudinal rectangular cutout in the middle and two supports, wherein the support Board has a length that exceeds the length of the hole in the direction of flow of water in the river, by means of two longitudinal and transverse surfaces of the cut is able to interact with the outer surface of the cylindrical housing, and the said Board is placed horizontally on the ice cover of the river so that its symmetry axis coincides with the direction of flow of water in the river, and the neck is pointing down the flow of water in the river, stands have the opportunity to interact with a support Board and a startup disk and placed perpendicular to the axis of symmetry of the base Board, one with side cut-outs on the Board, and the other from the opposite side.

2. Apparatus according to claim 1, characterized in that it comprises a stand having different heights.



 

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