Tidal power plant

FIELD: engines and pumps.

SUBSTANCE: invention is intended for conversion of sea tides energy. Power plant comprises body with open inlet and outlet installed on vertical shafts of rotation connected to power generators, hydraulic turbines in the form of drums, on external surfaces of which vanes are fixed. At body inlet and outlet vertical shields are installed, which direct tide flow to vanes of hydraulic turbines with provision of their rotation. Drum representing hydraulic turbine consists of cones connected with bases, on external surfaces of which vanes are fixed along helical line so that beginning of each vane on lower top of drum cone is displaced along with its rotation direction relative to the end of vane at the second upper top by 1-2 steps of vanes. On lower cone parts of drum vanes have shape of rotation in the form of cylinder, and in upper part of drum vanes repeat cone shape during rotation, which is increased by double value of vane. On lower cone part of drum, which makes 1/3 of the whole drum, number of vanes is doubled, and width of passage hole between drums in lower part is equal to double size of vane in the area of drum cone bases connection. Rotary vertical stems of tidal shields are installed from longitudinal axis of body symmetry on both sides at distance, which does not exceed diametre of drum lower part rotation, and ebb shields - from side of body at the distance equal to radius of drum lower part rotation.

EFFECT: higher efficiency of tide energy conversion into electric energy.

3 cl, 3 dwg

 

The invention relates to hydropower and is designed to convert the energy of the sea tides and constant currents into electrical energy, and can also be used on shallow rivers as run of river hydro.

Known hydroelectric power station that converts the energy of the water flow into electrical energy (Hydroelectric station. Edited Fun and Higrowth. M: Energy, 1980), or tidal power plant including the engine room with gidroagregativ blocks containing turbines and generators, connected with the sea by a vessel filled with water at high tide and produces electrical energy at low tide (RU # 2012714, M CL5IV 9/08, 1990).

The closest technical solution, selected as a prototype, is a UK application No. 2435908, IPC F03B 13/26 published 12.09.2007.

The disadvantages of the known power lies in its structural complexity, especially mechanisms of the spread of turbines on a mutable flow, low efficiency, due to the significant hydraulic losses in the transportation of liquid, and limited efficiency due to the production of electricity only during low tide.

The purpose of the invention is to improve the efficiency of tidal power plant.

The objective is achieved by tidal power plant includes a housing with an open the second inlet and outlet mounted on vertical shafts rotation, associated with generators, turbines in the form of reels, on the outer surfaces of which the fixed blades. On the inlet and outlet of the body has vertical panels that direct tidal flow on the blades of the turbines and provide their rotation. Representing the turbine drum consists of the United bases of the two cones on the outer surface of which a spiral line attached blades. The beginning of each blade on the bottom of the top cone drum is displaced in the course of its rotation relative to the end of the blade to the top of the second drum for 1-2 step of the blades. The lower conical section of the drum, the blades are in the form of rotation in the form of a cylinder, and in the upper part of the drum blades repeated during the rotation of the cone shape, enlarged to double the size of the blade. The lower conical section of the drum, which is 1/3 the total height of the drum, the number of blades twice its size, and the width of the bore hole between the drums in the lower part equal to twice the size of the blade at the junction of the bases of the conical drum. Rotatable vertical rod tidal shields installed from the longitudinal axis of symmetry of the hull on both sides at a distance not greater than the diameter of rotation of the lower part of the drum, and the tide of the shields from the lateral side of the housing at a distance equal to the radius of rotation nor is it part of the drum.

On the bottom of the hull tidal power station installed locking latches, providing current to the angles of the panels relative to the longitudinal axis of the body and at the ends of the boards across the vertical plane of installed flexible flaps facilitating the movement of the boards under the action of hydrodynamic pressure of the stream.

The generators are placed in the upper part of the body on the shafts of the turbines by reducing drives, and the entire unit generators is protected by the "bell".

The device is illustrated by drawings, where:

figure 1 - General view of their proposals in terms of the stated directions of flows at high tide and low tide and an outline of the reels;

figure 2 - type of power plant along the transverse axis of the device, where the left drum is shown in the form of rotation around its own vertical axis, and the right reel shows the approximate placement of the blades on the cone parts;

3 - position HES in moments of maximum safe generator water level and minimum operating level of the tide.

The housing 1 is mounted on the bottom of the Strait or lagoon, where provided sustained by the height of the tides or constant level water flows, for example in the river. In frame 1 on a transverse axis in the vertical shafts 2 drives fitted tapered drum 3, consisting of two articulated podosferikos, on the lateral external surfaces of which helices are attached to the blade 4 so that the beginning of each blade at one end of the drum is displaced in the course of its rotation relative to the end of the blade at the second end of the drum for 1-2 step of placing the blades on the drum.

Side of high tide along the longitudinal axis of the installation on a vertical axis of rotation 5 is equipped with shields, butterfly valve 6 in the form of flat plates. At the end portions of the shields 6 axles 7 fixed fluid flaps 8 contributing under the force of the stream to move the boards in required, under the terms of the flow direction, position. Over the top of the ramp 9 of the housing 1 is placed engine on each of the turbines with generators 11 current gear, and all the machinery covered by special bell 12.

Does tidal power plant as follows.

Water flow, tidal waves, revealing its hydrodynamic pressure of the flaps 8, moves the panels 6 to rotate around the axis 5, clutching the edge of the sides of the housing 1 in a position conducive to the strengthening of the tidal flow. The water pressure acts on the blade 4 cone drum 3, balancing the speed of the rotation reels 3, i.e. the accelerated flow of the tide is evenly distributed over the extended channel between the upper tapered portions of the drum. The shafts 2 of the light is Ana kinematically with generators 11, placed in a special chamber 10 (machine room). At this time the shields 6 installed on drums, automatically (under the action of a stream) take a neutral position regarding passing between the drums flow. After the tide reaches its maximum level and starts the reverse flow at low tide, the pressure force of tidal waves acting on the flaps 8 panels 6, stopping the access of flow along the axis of the station, and sends it to the side of the cavity between the casing and the reel, the latter rotating in the same direction (maelstrom direction of flow shown by the dotted line). At this time the shields 6 from tide acquire a neutral position. On the bottom of the body mounted locking tabs (not shown) the position of all the shields 6 relative to the longitudinal axis at the calculated angle for a smooth closing of the gates without creating "dead" point.

Otlivnyy stream is on the periphery of the body, acting on the outer parts of the reels 3, rotating the drums in the same direction as the tidal wave. This shields 6, from the tide, turn under pressure tidal waves around the axis 5 in a position in which they have a minimum hydraulic resistance to flow.

Instead of the described self-acting hydraulic actuator guides shields-gates 6 m is able to use force, for example, the electrical device opening and closing of the gates.

New technical results of the proposed device are as follows:

the device effectively utilize the energy as tidal and tidal waves; and a constant flow of Maritime Straits or in the river;

- stated the proposal has a simpler construction and easier maintenance, and repair or replace parts than analogues, and also has a more extended range of use, including the river.

under favourable hydrological conditions in the lagoon or in the river the proposed device can be collected in the energy zone, covering a large space of tidal stream or river, which significantly increases the capacity of the electricity produced. One station can provide power from 50 kW to 350 and more kW depending on the intensity of the tides, the dimensions of the plant and the power applied to the generator.

1. Tidal power plant, comprising a housing with an open inlet and outlet mounted on vertical shafts of rotation associated with the generators, turbines the form of reels, on the outer surfaces of which the fixed blades, and the inlet and outlet of the body has vertical panels, directional tidal flow on the blades of the turbines, ensuring their rotations the Oia, characterized in that representing the turbine drum consists of the United bases of the two cones on the outer surfaces of which helices are attached to the blades so that the beginning of each blade on the bottom of the top cone drum is displaced in the course of its rotation relative to the end of the blade to the top of the second drum for 1-2 step of the blades, and the lower conical section of the drum, the blades are in the form of rotation in the form of a cylinder, and in the upper part of the drum blades repeated during the rotation of the cone shape, enlarged to double the size of the blade, and the lower conical section of the drum, which is 1/3 the total height of the drum, the number of blades up to twice its size, and the width of the bore hole between the drums in the lower part equal to twice the size of the blade at the junction of the bases of the conical drum, in addition, a rotary vertical rod tidal shields installed from the longitudinal axis of symmetry of the hull on both sides at a distance not greater than the diameter of rotation of the lower part of the drum, and the tide of the shields from the lateral side of the housing at a distance equal to the radius of rotation of the lower part of the drum.

2. Tidal power plant according to claim 1, characterized in that on the bottom of the body has locking latches, providing current to the angles of the panels relative to sales is through the axis of the housing, and at the ends of the boards across the vertical plane of installed flexible flaps facilitating the movement of the boards under the action of hydrodynamic pressure of the stream.

3. Tidal power plant according to claim 1, characterized in that the electric generator is placed in the upper part of the body on the shafts of the turbines by reducing drives, and the entire unit generators are protected by the bell.



 

Same patents:

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Pneumatic converter // 2230852
The invention relates to transducers sea wave energy into electrical energy, the device may also perform the function of the breakwater

Tidal power plant // 2012714
The invention relates to hydropower

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.

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Tidal power plant // 2361038

FIELD: engines and pumps.

SUBSTANCE: invention is intended for conversion of sea tides energy. Power plant comprises body with open inlet and outlet installed on vertical shafts of rotation connected to power generators, hydraulic turbines in the form of drums, on external surfaces of which vanes are fixed. At body inlet and outlet vertical shields are installed, which direct tide flow to vanes of hydraulic turbines with provision of their rotation. Drum representing hydraulic turbine consists of cones connected with bases, on external surfaces of which vanes are fixed along helical line so that beginning of each vane on lower top of drum cone is displaced along with its rotation direction relative to the end of vane at the second upper top by 1-2 steps of vanes. On lower cone parts of drum vanes have shape of rotation in the form of cylinder, and in upper part of drum vanes repeat cone shape during rotation, which is increased by double value of vane. On lower cone part of drum, which makes 1/3 of the whole drum, number of vanes is doubled, and width of passage hole between drums in lower part is equal to double size of vane in the area of drum cone bases connection. Rotary vertical stems of tidal shields are installed from longitudinal axis of body symmetry on both sides at distance, which does not exceed diametre of drum lower part rotation, and ebb shields - from side of body at the distance equal to radius of drum lower part rotation.

EFFECT: higher efficiency of tide energy conversion into electric energy.

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EFFECT: no-pause operation of float power units installed along both boards of a canal.

2 dwg

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