FIELD: mechanical engineering.
SUBSTANCE: invention relates to structures of installations for energy conversion of water course of airflow into electrical power. Hydropower installation contains generator 1 and hydrodynamic drive 4, implemented in the form of two sequentially installed screws 7 and 8, implemented with rotation ability into side opposite and connected to generator 1 through conversion facility of rotational movement of two shafts into rotational movement of one shaft, implemented in the form of conic step-up gear 13, installed in inner body 6. Inner body 6 is affixed to external body 5 by means of two wicket gates 23 and 24, provided for spinning of water flow before its supplying to the back screw 8.
EFFECT: invention is directed to increasing of coefficient of efficiency of installation ensured by increasing of back screw coefficient of efficiency.
The invention relates to structures for converting the energy of the incoming flow of water into electrical energy.
Known hydropower plant (see EN 93029865 AND 27.08.1985, F03B 13/12)with two screws rotating in different directions, connected by shafts respectively with the rotor and stator of the generator. While the stator of the generator is rotated. This is a big drawback, since the stator must be placed in a fixed case designed for attachment to a support and output wires. In addition, the rotor, the stator and the screws rotate with the same angular velocity. If you design a high-speed generator having a rotational speed, for example, 3000...10000 rpm, to design a propeller with a diameter of more than 1 m will fail for reasons of strength, due to the large centrifugal loads.
For example, when n=10 000 Rev/min and D=1 m/s
the speed of rotation of the rotor at the periphery will be
that is, nearly 2 times the speed of sound in air and is comparable to the speed of propagation of sound in water and is not permissible under the terms of strength.
For industrial generators for maximum power, you must have the screws with a diameter of 5...10 m and more. In this case, the rotation speed of the screws should not exceed 50 rpm, i.e. you need to install the cartoon is of plicator, increase the speed of the rotors 10...20 times. In addition, preferably the stator of the generator to perform not rotating.
Known hydropower plant comprising a generator, a guiding apparatus and a hydrodynamic drive, made in the form of two series set screws, are made to rotate in opposite directions and connected to the generator through the means of converting rotational motion between two shafts into a rotary movement of one shaft, made in the form of a conical multiplier that is installed in the inner case, with the guide device is designed to promote the flow of water before it is fed to the rear screw (see SU 1280178 A1, 30.12.1986, F03B 13/10).
A disadvantage of the known installation is a single guide vane installed before the second screw, three poles, one at the top of the device and two at the bottom.
The objective of the invention to increase the efficiency of the plant by increasing the efficiency of the rear screw through the promotion of water flow at the exit from the front of the screw, the direction of the optimal flow of water at the entrance of the rear screw.
The invention is illustrated by drawings, in which
figure 1 shows a hydropower plant,
figure 2 - a section B-B in figure 1,
figure 3 - section b-b In figure 1.
Install the CA (figure 1) contains the generator 1 with rotating magnets 2, the excitation winding and connected perpendicularly to the hydraulic actuator 4, running on the energy of the water flow. Hydrodynamic drive 4 includes an outer housing 5 and the inner case 6 made a streamlined shape. The cavity "A" inside the inner case 6 is sealed and filled with lubricating fluid.
Hydrodynamic drive 4 (figure 1) consists of a set consistently front and rear screws 7 and 8 respectively on the front and rear fairings 9 and 10, which are rigidly connected with the shaft 11 mounted in bearings 12.
A tool to convert rotational motion between two shafts into a rotary movement of a shaft made in the form of a conical multiplier 13. The screws 7 and 8 at work revolve in different directions.
On the shafts 11 are installed leading bevel gears 14 and 15 are tapered multiplier 13. Driven gear 16 mounted on shaft 17. The shaft 17 through the clutch 18 is connected to the shaft 19. The shaft 17 is mounted inside a protective casing 20. To the protective cover 20 is welded to the ribs 21. The generator 1 is installed on the base plate 22. The inner case 6 is attached to the outer housing 5 by means of guide vanes 23 and 24 (figure 2 and 3)designed to promote the flow of water before it is fed to the rear screw 8, which will allow more effective compared to one napravlyayus the apparatus, to promote the flow of water in front of the rear screw. This increases the efficiency of the installation. At the entrance to the hydraulic actuator 4 is installed protective grille 25, preventing ingress of foreign objects on the screws 7 and 8, and ensures the safety of operation. Wire 26 displayed on the surface of the water to the consumer.
The application of this scheme will reduce the diametrical dimensions of the screws 7 and 8, to increase their efficiency, to reduce the diameter of the installation is almost 1.5 times and reduce the level of noise generated by the screws 7 and 8.
Before operating, perform the installation. Thus there are two possible ways of installation. The first option (figure 1) provides for the installation of the generator 1 at the bottom of the reservoir through the support plate 22.
The second option generator 1 is fixed on the surface of the water on the platform, and a hydrodynamic drive is installed under water. This gives a significant advantage: the generator can be maintained, not sinking under the water, and it is easier to bring the wires 26 and to connect them with consumers energy.
During operation of the installation it is set in the area of permanent water flow. The water flow actuates the hydraulic actuator 4 (figure 1), i.e. the screws 7 and 8 through the means of converting rotational motion (conical multiplier 13, and the shaft 17 drives the generator shaft 19. Generated electricity is chechetka energy is supplied by electrical wires to the consumers of energy through the wires 26.
The presence of the protective casing 20 provides safe operation and, in addition, facilitates the shaft 17 from bending loads. For this purpose the ribs 21.
Protective grille 25 prevents the ingress of foreign objects and fish inside the unit, which also increases its reliability and security.
The streamlined shape of the housings 5 and 6 additionally increases the efficiency of the plant and its capacity. The outer casing 5 prevents radial flow of water under the action of centrifugal forces and increases the efficiency of the installation.
The use of the invention will:
1. To promote the flow of water at the outlet of the first screw.
2. Send in an optimal way the flow of water to the rear entrance of the screw.
3. To significantly increase the efficiency of the rear propeller, and consequently, the efficiency of the installation as a whole.
4. To get more power through the use of screws maximum possible diameter in order that through them passed the maximum consumption of water, use the maximum angular velocity of rotation of the screws from the condition of strength, the use of conical multiplier to an electric generator, having minimum dimensions, maximum power.
5. Reduce noise by screws, through the use of the fairing.
6. To facilitate the maintenance performed separately from the guide is dinamicheskogo drive and separated from it by a considerable distance through the shaft 17.
7. To ensure safe operation of the device.
Hydropower plant comprising a generator and a hydrodynamic drive, made in the form of two series set screws, are made to rotate in opposite directions and connected to the generator through the means of converting rotational motion between two shafts into a rotary movement of one shaft, made in the form of a conical multiplier that is installed in the internal housing, wherein the inner housing is attached to the outer housing by means of two guide vanes that are designed to promote the flow of water before it is fed to the rear screw.
FIELD: engines and pumps.
SUBSTANCE: invention is related to engines that use wind and water flow forces. Water-wind engine comprises two or three vanes, which are evenly arranged around shaft in single row and each arranged in the form of two parallel pipes creating frame, fixed with their ends on shaft. Between frames rods are fixed with suspended plates. Limiters are installed on pipes opposite to every rod and between rods. Engine components are made of steel and plastics. Pair of plates is suspended on every rod. Limiters are installed between rods at equal distance. Engine is equipped with massive site - area of engine fixation, in which shaft is installed vertically. Site may be fixed to ground, platform, transport, floating crafts. Plates at 1/3 width along their whole length have bending of 2°, creating common angle of 4° provided free travel plates are folded in every pair of plates, which assists in their opening during working stroke.
EFFECT: engine is equipped with additional rows of vanes installed on shaft with displacement of vanes in different rows for increase of power and higher compactness of elements.
6 cl, 8 dwg
FIELD: engines and pumps.
SUBSTANCE: converter of fluid medium energy is related to the field of renewable energy sources, namely to energy of river or gas and its conversion mainly to electric energy. Converter comprises frame and cinematically connected the first and second, third and fourth vanes, the first and second overrunning clutches installed on central shaft, power generator, magnets installed in vanes. Converter is equipped with conical pair of gears that interact with multiplier and power generator, the first, second, third and fourth central sprockets, which interact with each other by the first and second units of vane opening and closing, and also third and fourth overrunning clutches, the first, second, third and fourth chains. The first - fourth vanes are installed on frame with the possibility to make reciprocal motion in direction of medium flow and to interact via the first - fourth chains with appropriate central sprockets. Every vane comprises vertical stand and two folding halves, on upper end of every vane half there is a pair of bearings installed, which interact with units of opening and closing of vane. Magnet is installed on every half of vane, and stand of vane is fixed to chain. In the end of working stroke every half of vane via bearings is arranged as interacting with appropriate units of vane closing, and in the end of passive stroke folded halves of vane are arranged as interacting with appropriate units of vane opening.
EFFECT: design simplification and reduction of converter prime cost.
7 cl, 11 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to water- and wind-power engineering, particularly to the devices converting fluid flow energy, for example that of rivers, ebb-tide and other streams, as well as wind power into electrical or mechanical power to drive various machinery. The proposed method consists in that a funnel is submerged into fluid medium to take it off and to direct to, for example a turbine. The aforesaid funnel features a bulbous shape on the side of in coming fluid flow. The funnel inlet area-to-outlet area ratio exceeds the ratio between the inlet fluid flow speed and flow boundary speed. Note that with the flow boundary speed further increase dynamic head decreases. Passing out from the funnel, the fluid flow is distributed among several turbines allowing for its power.
EFFECT: increased efficiency of fluid flow power take-off.
FIELD: water-power engineering.
SUBSTANCE: invention refers to water-power engineering, and namely to fluid medium energy utilising devices, and can be used for energy conversion of fluid medium flow, e.g. river flow, into electric one, whereby momentum energy of flows is converted into translation-and-vibration movement. Fluid medium energy utilising motor consists of a frame with a window, which is submerged with its longitudinal side across the medium flow and is fixed on foundation. Load-carrying member with working member is installed in the frame so that it can move. Working member is intended for being effected by fluid medium. It is fixed with its central part in the load-carrying member, and when in operation, it is installed angle-wise to the flow direction. Motor comprises a working member position changing device as well as hydraulic force transformer. Load-carrying member is installed so that it can move in a back-and-forth manner in the frame window along its longitudinal sides. Working member made in the form of a wing with a hydrofoil profile is installed on the load-carrying member axis so that it can turn about the axis and interact with fluid medium flow. Blade position changing device is made in the form of the blade turning stops symmetrically installed on the frame longitudinal side. Hydraulic force transformer is kinematically connected with load-carrying member.
EFFECT: invention allows increasing motor efficiency and simplifying motor design.
FIELD: engines and pumps.
SUBSTANCE: invention relates to hydropower and is designed to convert fluid medium power into electric power as well as to convert the power of air mass travel into electrical or mechanical power intended for rotation of various devices. The aforesaid device submerged in a fluid medium streamwise incorporates a continuous chain of flexible elements with working and idling runs enveloping the drive pulleys furnished with the vanes arranged perpendicular to flow direction. The power take-off shaft accommodates two spaced apart drive pulleys furnished with the contact elements engaged with the mating flexible elements, both being rigidly linked transverse con-rods. Ones of the said con-rods have a vertical axle fitted at their centers whereon rotary vanes are fitted arranged between the chains so that, during the working travel, they turn, being forced by the flow pressure, through 90° on both sides in the book manner and, during idling, they get folded. Others con-rods are furnished with a lengthwise brace rigidly linked thereto and arranged stremwise with vanes open and linked to the transverse con-rod with the axle with rotary vanes fitted thereon, the said transverse con-rod moving freely.
EFFECT: simpler design, higher reliability and longer life.
9 cl, 5 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
SUBSTANCE: invention is related to the field of renewable energy sources, namely, wind energy conversion into electric energy. Converter contains frame and first and second blades that are kinematically connected with cord (chain), first and second drums (starts) that are motionlessly installed in the shafts of the first and second gears, which interact with the first and second gears via corresponding overrunning clutches, third gear and conical pair of gears with step-up gear and generator, fourth and fifth gears that interact with the third gear and third and fourth blades that are kinematically joined with cord (chain) and third and fourth drums (stars), which interact with fourth and fifth gears via corresponding overrunning clutches. Converter is made of two parts that are symmetrical in respect to outlet shaft of fifth gear, in which drive gear of conical pair is motionlessly installed. The second option of energy converter consists of two parallel adjacent pipes, in the middle of which leak-tight chamber is installed, and blades are installed inside pipes.
EFFECT: increase of efficiency factor and reduction of fluid medium energy conversion net cost.
9 cl, 8 dwg
SUBSTANCE: the micro hydro-electric power station is designed for converting energy of flowing medium into electrical energy. The device contains of ground unit, consisting of electricity distributing device, control system and controlled ballast load, a fixed water tank, generator located lower than the level of water in the hermetic tank and connected to the ground unit using water resistant cable. The water turbine with a horizontal axis of rotation, is mounted at the run-out and connected to the shaft of the generator through a gear transmission, in the form a multiplier located in a gondola. A cone is placed on the inlet of the run-out in front of the water turbine. The generator is located in the direction of flow behind the multiplier in the same gondola, which is supplied with a device for pumping water from its bottom part. The cone is made of flat elements; part of which is made in such a way that turning about longitudinal axes is possible. A driving gear is provided for this purpose.
EFFECT: increased operation reliability; power regulation.
6 cl, 1 dwg
FIELD: wind and hydraulic power engineering.
SUBSTANCE: invention relates to wind and hydraulic motors with vertical shaft of rotation. Proposed vertical shaft turbine has shaft hinge-mounted on post with rigidly and normally attached supports, and blades arranged between supports and installed on axle for turning being limited by two locks. Supports are installed in two directions to form row. Blades are made of closed elastic material tightly enclosing thickened axle to prevent axial displacement and vertical rigid edge spring-loaded relative to axle. Moreover, each blade is provided with stops fixing elastic material relative to thickened axle. Turbine can be furnished with additional rows of supports with blades installed higher and/or lower than first row. Turbine can reliable operate irrespective of velocity and gusts of wind, region and place of mounting, including movable objects, with provision of efficiency 10-16% higher than that of similar constructions.
EFFECT: simple design, effective operation.
3 cl, 2 dwg
FIELD: generation of electric energy by conversion of water flow.
SUBSTANCE: electric energy is generated with the aid of vane-type machine having at least one rotor, rotor-driven generator and float for vane-type machine; vane-type machine is anchored stationary and rotor is oriented in direction of water flow. Vane-type machine is held in suspended state below water surface. Float may be inflated with compressed air and may be filled with water when required. Rotor is mounted on axle oriented in way of water flow. Rotor blades may be turned with the aid of mechanism in direction of water flow or in opposite direction. Rotor axle is just hollow axle forming the float. Vane-type machine is invisible during operation of plant.
EFFECT: simplified construction; reduction of time required for mounting.
22 cl, 11 dwg
FIELD: electrical power engineering.
SUBSTANCE: invention relates to power generation and can be used in constructing low pressure river, tidal or wind power installations. A three-phase electric generator is put between orthogonal turbines. The orthogonal turbines have a common fixed axis. The electric generator is provided with at least one two-way action inductor. The inductor or inductors are immovably attached on arms in a circular direction using frames mounted on the axis. The magnetic core and windings of each inductor are put on a separate arm. The latter is semi-pivotally connected to the frame with possibility of axial displacement about the orthogonal turbines. Adjacent phase windings of each inductor of the electric generator intersect crosswise, creating electromagnetic fields, propagating in opposite directions at different sides of the inductor and the latter face different turbines. Electric power cables from the inductors are brought out on elements of the fixed frame through the hollow fixed axis of the power generating unit.
EFFECT: invention increases reliability of operation of power installations with orthogonal turbines by simplifying design of the power generating unit, as well as more efficient use of the energy of water or air medium.
4 cl, 5 dwg
SUBSTANCE: offshore drilling platform includes supports for fastening to the ground and platform foundation. Diesel-generator is installed on the platform foundation. The diesel-generator supplies power to drilling equipment and personnel quarters. There is a control unit between power consumers and generator. No less than one additional generator with the drive operating on the natural power sources is connected to the control unit. At least one additional generator may be designed to have aerodynamic drive exploiting wind power and installed on the upper part of the support. At least, one additional generator may be designed to have hydrodynamic drive operating from wave power and installed on the support under water. Aerodynamic drive or hydrodynamic drive may be implemented as two co-axial airscrews connected with the additional generator through the facility of two shafts rotation movement transformation to the rotation movement of one shaft, e.g. differential orbital increase gear.
EFFECT: electrical power supply to consumer.
14 cl, 6 dwg
FIELD: machine building.
SUBSTANCE: invention relates to power engineering and is designed to transform the power of river streams and tides into AC or DC electric power. The damless hydroelectric power station comprises a confuser-diffuser cylindrical-entrance water duct whereat a quick-acting gate and turbine are located. The said gate is arranged in the turbine and represents a double-acting facility operating depending upon the water flow direction in the aforesaid water duct. The said cylindrical entrance communicates via bypass branch pipes with check valves fitted therein with two buffering capacities communicating via a bypass pipeline. The pipeline houses the turbine connected to the electric generator. Each buffering capacity communicates with the aforesaid cylindrical entrance with the help of two bypass branch pipes, one being located ahead of the gate while the other one operates behind it along the stream in water duct.
EFFECT: all-season acting damless hydroelectric power station.