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.
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.
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.
SUBSTANCE: turbine plant driven by water to produced power from the water flow column comprises a rectangular deck with streamline cross section furnished with a lower and upper surfaces incorporating front and tail edges relative to the water flow direction at least one turbine and a turbine assembly going up from the deck upper surface and deck support. The said support stays permanently on the water column bottom so that the deck, when installed onto the aforesaid support, the vertical space between the deck power surface and water bottom, and includes an appliance to move the deck relative to the support elements for the deck to move from operating into uplifted position whereat every turbine assembly is accessible on water column surface.
EFFECT: production of bearing structures to support hydraulic turbines.
10 cl, 26 dwg
FIELD: machine building.
SUBSTANCE: proposed power generation plant exploits the power of sea wave and tides. The plant comprises a hollow cylindrical housing with its bottom open. It communicates with seawater and is anchored to sea bottom. The said housing features a narrowing forming a smaller cylinder. The casing is attached to the aforesaid cylinder. The aforesaid casing houses an impeller driven by air sucked in/out from the housing inner space via air ducts formed by the aforesaid casing and non-return valves mounted inside the upper small cylinder, the air force being directly dependent upon the water level caused by the running wave.
EFFECT: simple low-cost high-efficiency power generation unit to be mounted at whatever sea- or-ocean coast line.
4 cl, 22 dwg
SUBSTANCE: device for anchoring floating structures incorporates mooring bar with ends furnished with the appliance to turn the aforesaid rod about its axis of rotation. At that the rod free end is provided with a sleeve letting the chains or cable to pass there through. The anchor chain passed through one of the aforesaid sleeves is fastened at one end faces of the said floating structure. Besides that, to up the structure stability, the proposed device can be furnished with links connecting the free ends of both mooring rods to the structure in question.
EFFECT: anchoring system causing no floating structure trim difference and providing for stable positioning with minor drift, reduced distance between anchor and floating structure.
11 cl, 15 dwg
FIELD: engines and pumps.
SUBSTANCE: support system intended for, at least, one underwater turbine plant incorporates turbine units made up of turbine assemblies 3 and load-bearing column 1 coming vertically from underwater and seated on the seabed. The system includes a load-bearing structure for, at least, one turbine assembly mounted on column 1 and turning around it, and an appliance allowing selective motion of the load-bearing structure relative to column 1. Column 1 length section, top section 8, wherein the turbine assembly move, consists of two separate sections 9, 10 facing each other and separated by a certain distance between them to make lengthwise gap 11 between the said sections 9 and 10. Sections 9, 10 have a D-shape and form a cross-section of column 1 in the form of a complete ellipse or an oval. Bottom section 12 of column 1 features a round cross-section.
EFFECT: higher reliability of the support system allowing the turbine repair and lower costs.
22 cl, 27 dwg
FIELD: power engineering.
SUBSTANCE: proposed power generator contains turbine installed in turbine housing for turning around vertical axis. Turbine is connected with support column resting by lower section for turning against lower section of turning housing which is in meshing with upper section of inner wall of turbine housing through great number of turnable members. Thanks to it turbine can be selectively turned in turbine housing by means of turnable members.
EFFECT: provision of effective operation at both directions of water current.
9 cl, 3 dwg
FIELD: power engineering.
SUBSTANCE: proposed hydroelectric station includes energy converter consisting of chain of hydraulic turbines. Hydraulic turbine is built on hollow carrying shaft-cylinder with conical fairings on bases inscribed into inner ends of blades-semicylinders whose outer ends are clamped together in several places over length of hydraulic turbine by narrow rings-hoops and form multiblade cylinder with hollow belts with ballast on end faces providing neutral buoyancy of hydraulic turbine. Adjustable ballast in hollow part of carrying shaft-cylinder provides variable buoyancy of hydraulic turbine to submerge hydraulic turbine in water completely at neutral buoyancy or rising to surface. Energy converter is connected with electric generators arranged on the bank through system transmitting rotation and arranged in bank cavities. Rotation transmitting system employs different modes of transmission of rotation and connection and movable power unit with travel motion mechanism by means of which it displaces inside cavity. Movable power unit is connected with energy converter and, moving vertically, can set power converter at required depth.
EFFECT: increased efficiency.
FIELD: engineering industry.
SUBSTANCE: invention refers to water power engineering, and namely to water-borne vehicles producing electric energy used for external consumers and for its own movement. Energy-producing floating platform consists of a triangular-shaped platform with a power unit, which is elevated above water surface by means of columns, floats, piston-type pumps, and supports which are hinged to columns. Floating platform is equipped with wind impellers installed on brackets and being synchronously rotated by propelling screws with wheels. Between each support and float arranged are piston-type pumps. Inside each column there is an axle on lower end of which there installed is a propelling screw and a wheel, and the other axle end is taken out above the platform surface and is provided with a pulley. Over pulleys there passed is a flexible rope pulled over by a steering mechanism.
EFFECT: designing the maneuvering self-moving energy-producing floating platform which is capable of autonomous movement on water surface.
FIELD: electric power engineering.
SUBSTANCE: invention is related to electric power engineering and may be used for generation of electric power at the account of ocean tides, ocean waves, wind from the shore by integration of tide energy with hydrogen technology. Barrage for energy extraction from potential energy contained in ocean tides, consists of multiple support stands installed with the same interval from each other in the ocean along the perimeter line and attached to the sea bottom. Panels are installed one above the other and fixed between pairs of neighboring support stands. Gaps between every panel and support stands are leak-tightened. Pairs of support stands from two rows of support stands for caissons. Support panels are placed between every pair of opposite support stands from the mentioned two rows so that caisson is supported by support panels, so that they form platform between two rows for caissons. In every caisson there are turbines with facilities that provide for water passing through the turbine by operator command. Electric generators are connected to at least one turbine. Barrage has no gaps or slots. As a result the ocean is separated from the area inside the barrage, excluding time, when operator provides water passing through turbine for electric power generation. Invention works at different loads and functions as power complex with electrolyzers and fuel elements for generation of electric power by request, excluding by that impulse character of traditional tide energy. Hydrogen may be produced as target product.
EFFECT: reduces cost of works.
6 cl, 17 dwg
FIELD: power engineering.
SUBSTANCE: plant is designed for generating power by conversion of energy of sea waves. Proposed wave power plant is mounted on pontoon and provided in nose part with bellows with bottom from wave side and longitudinal bell with vertical tube arranged over bellows accommodating electric generator with mechanical converter, and in center of pontoon behind the bell, box-shaped vertical air duct is installed divided by vertical partition into two parts and communicating with pontoon through two check valves. Windwheel with blades is installed in cut of partition, being mechanically connected through shaft with electric generator. Bellows chamber with bottom is installed in stern part of pontoon. Holes are made in wall of pontoon between spaces of bellows and pontoon, and in wall of pontoon bottom between spaces of bellows chamber and pontoon to pass compressed air inside pontoon, and electric generators are installed.
EFFECT: provision of more complete utilization of energy of sea waves.
8 cl, 3 dwg
FIELD: power engineering.
SUBSTANCE: proposed plant is designed for converting energy of waves into electric energy. Proposed plant contains vertical support secured on bottom, rocking rod installed on support for rotation around axis of support, float secured on one of rod ends. Float is provided with intake bottom hole and outlet top hole, both provided with remote controlled valves, and electric generator. Upper end of support remains under water at any possible magnitudes of waves. Wave magnitude sensor is connected with remote controlled valves, float is connected to pneumatic line connected with pressure source, rocking rod is connected with pump which is connected by pipeline with accumulator of hydropotential energy on shore, electric generator is located on shore and is coupled with hydraulic turbine connected with accumulator of hydropotential energy. Plant changes to safe mode of operation owing to filling of float with water at excess of magnitudes waves determined by corresponding wave magnitude sensor.
EFFECT: provision of reliable and long operation.
9 cl, 3 dwg
FIELD: power generating.
SUBSTANCE: invention is designed for use in vehicle power drives and for power generation. Method of conversion of energy of working medium into mechanical and electric energy is provided by multistage conversion of energy of drive engine having rotating output shaft, for instance, hydraulic turbine. Power torque is transmitted from shaft of drive engine to mechanical power consumer by means of at least two-stage conversion of mechanical energy into energy of working medium, for instance, water. Water pressure is provided by use of centrifugal hydraulic pump or radial-axial hydraulic turbine operating as a pump with provision of generation of reactive energy caused by interaction of water with blades of hydraulic turbine stage or reactive jet nozzle of stage runner, with transmission of water through fixed waterway and stage stator made in form of spiral chamber or branched manifold. Peripheral speed of stage runner with blades or reactive jet nozzles in creases torque by value of difference of radii of stage runner and drive engine wheel. Device contains drive engine with rotating shaft, for instance, hydraulic turbine, transmitting shaft, generator and at least two similar conversion stages. Shaft of hydraulic turbine is coupled with centrifugal pump impeller of first stage radially from which fixed waterways are laid to branched manifold or to spiral chamber on side surface of which radial-axial turbine runner is installed with working blades or nozzles over periphery under which drain manifold is installed. Runner of second stage hydraulic pump is rigidly installed on shaft by means of which it is connected with runner of first stage and rotor of electric generator.
EFFECT: increased torque transmitted to electric generator.
FIELD: power engineering.
SUBSTANCE: proposed plant is designed to convert energy of waves into electric energy. Proposed device contains pontoon, anchor chain and anchor, electric generator and drive including working and support sheaves over which flexible tie with weights o each end is passed. One of weights is installed for hanging over bottom and is made in form of floating anchor and the other is made in form of counterweight. Anchor chain is provided with tie-rod. Floating anchor and counterweight are made for adjustment of their mass. Floating anchor can be made in form of hollow platform in which row of chambers is made. Each chamber is sealed and designed for accommodating and/or ground, and /or air, and/or water. Counterweight is made in form of hollow float with sealed chamber in lower part which is designed for ground, and sealed air chamber is found in its upper part. Tie-rod is installed by one end on anchor chain and by other end, on pontoon. It is made flexible and can be adjusted in length.
EFFECT: provision of operation at any depth.
5 cl, 3 dwg
FIELD: power engineering.
SUBSTANCE: invention is designed for conversion of wave energy into electric energy. Proposed converter contains mechanically coupled fixed post, float chambers, frame, shaft, step-up gear and electric generator. Moreover, converter additionally contains relatively interacting second shaft, first and second gears and at least two motion converters. First and second gears are fixed on corresponding shafts and engage with each other. Each motion converter has vertical rod installed for vertical vibration on upper end of which first block is installed, and on lower end, third sprocket engaging with first and second float chambers. First and second overrunning clutches with sprockets are installed on shafts and they engage through first and second chains with third sprocket.
EFFECT: increased efficiency.
8 cl, 7 dwg
FIELD: wave-energy-to-electric-power conversion.
SUBSTANCE: proposed wave energy plant has supporting frame with vertical guides, float installed for vertical reciprocation that accommodates ratchet gears provided with coaxial central holes, shaft passed though these holes and fixed in supporting frame to laminar screw section whose top and bottom parts are twisted in opposition and contact ratchet gears disposed in cylindrical casing with through holes; it also has electric generator. Float is mounted for displacement along vertical guides and has inertial member disposed inside for rotation and displacement together with float; inertial member contacts inner surface of float casing through rollers. Cylindrical casing is joined with inertial member; electric generator is disposed within supporting frame and kinematically coupled through extensible joint between inertial member and drum installed for joint rotation with the latter and with gear transmission.
EFFECT: enhanced power output of wave energy plant generator.
1 cl, 1 dwg