Hydropower plant "lena river"
The unit is designed to generate electricity, compressed air and water supply from the river due to the energy of the flow. The installation includes onshore wells equipped with water-lifting device and performed to a depth exceeding the depth of the water in the river, and with the possibility of providing a cavity filling with water until the water level in the river, set in the flow of the river water wheel driven by the energy of the specified stream, the compressor with the intake air from the atmosphere and the discharge line of the air in the receiver. Water-lifting device made in the form of pneumonias immersed in the well below the water level therein. Installation is additionally equipped with a turbo-generator to convert the energy of compressed air into electricity, while the compressor through the discharge line of the air in the specified receiver and additional valve control connected by the turbogenerator. On the discharge line of the air between the secondary valve control and turbine generator set pressure reducing valve that supports the constant pressure of air supplied into the cavity of the nozzle of the turbine. Installation design provides three modes: generating electrical energy with the tick, in particular, to devices for generating electricity, compressed air and water supply from the river due to water flow.Energy hydraulic flow of rivers and other fluvial reservoirs wide use in the national economy. Known installation to use the energy of water flow "Tunguska", containing a moored floating body and impeller, kinematically associated with generators (1).The disadvantage of this setup is that it does not provide the possibility of producing compressed air and water supply.The closest technical solution, selected as a prototype, is a device for producing compressed air and water supply from the river due to the energy of the hydraulic flow. It includes onshore wells with water-lifting device, the water wheel, the compressor with the intake air from the atmosphere and the discharge line of the air in the receiver (2).A disadvantage of the known installation is that it does not provide the possibility of generating electrical energy. In addition, for water supply requires the well, the depth of which should significantly exceed the height of rise of water, which complicates the installation.The objective of the invention is gathogo air, electric power and water supply.The invention consists in the following. Water-lifting device in the form of pneumonias immersed in a coastal basin or in the water flow. As a result, the water intake can be made directly from the stream, as well as from a well, the depth of which is considerably smaller than the height of rise of water. To convert the energy of compressed air into the electrical unit is additionally equipped with a turbo-generator. When the compressor through the discharge line of the air in the receiver and the additional valve control connected by the turbogenerator. Between the additional valve control and turbine generator set pressure reducing valve that supports the constant pressure of air supplied into the cavity of the nozzle of the turbine. This allows you to keep a given interval the frequency of rotation of the rotor of the generator. In General, the unit has a simple design and has improved performance characteristics.The drawing shows gidroenergetichesky installation. It consists of a water wheel 1, is immersed in the flow of the river with the possibility of conversion of energy of the fluid into rotational motion kinematically associated with the compressor 2, the 8, which consistently placed the pressure regulator 4, three-way valve 19 and the pressure valve 18. When the receiver 8 is equipped with a safety valve 7, and the connecting device 5 with the valve 6 controls the air supply to the consumer. These elements together constitute the system, providing compressed air. The water supply system also includes a water wheel with 1 compressor 2 and additional onshore well 20 pneumonias 21. The well 20 is made to a depth sufficient to accommodate therein pneumonias 21 below the water level. On the side wall in contact with the ground water level in the river, there are openings /arrows/. At the discretion of the consumer, provided that the water level in the river is sufficient, pneumonias 21 may be immersed in the flow of water /not shown/. Thus pneumonias 21 through the valve 19 and the pressure regulator 4 is connected by the compressor 2 and is equipped with a pipeline to supply water to the tank 15, which is equipped with a drain pipe 12 and the connecting device 16 with the valve 17 controlling the supply of water to the consumer. To convert the energy of compressed air into the electrical unit is equipped turbogenerator structive elements 4, 19, 18/, and through the receiver and the valve control 9 connected by the turbine - nozzle 11. To maintain a constant pressure of air supplied into the cavity of the nozzle 11 between the valve 9 and the turbine /nozzle 11/ installed pressure reducing valve 10.The system can operate in three modes: receive the compressed air, electricity and water supply. In the receive mode of the compressed air installation operates as follows. Three-way valve 19 is set to the "air", the valve 9 closes: compressor 2 is connected to the receiver 8, the air supply to pneumonias 21 and turbocharger /nozzle 11/ not made. The controller 4 stops the necessary pressure in order to set the rotational speed of the water wheel 1. When this hydraulic flow of the river affects the blades of the wheel 1 and leads him into rotational motion. The compressor 2, is kinematically associated with the specified wheel, sucks air through the intake 3 and forces it into the receiver 8 through the pressure regulator 4, the edge 19 and the discharge valve 18. To discharge excess pressure generated by the compressor 2, is provided a relief valve 7, is adjusted to the set pressure. Open the valve 6 and the air through prisoedenit electric power valve 6 is closed, and the valve 9 opened: compressor 2 through the regulator 4, the valve 19, the valve 18, the receiver 8, the edge 9 and the valve 10 provides pressurized air to the cavity of the nozzle 11, which sends it to the turbine 13. Under the action of a jet of compressed air turbine 13 is rotationally driven - rotates the rotor of the generator 14. As a result, the generator 14 produces an electrical current which is fed into the grid /not shown/ consumer. To improve the quality of electric power, the rotor speed of the generator 14 is supported in a given interval of the reducing valve 10, which provides a constant pressure of air supplied into the cavity of the nozzle 11 of the turbogenerator. For transfer of the facility to water supply faucet 19 is set to the "water": the compressor 2 is disconnected from the receiver 8 is dodeca air to pneumonias 21. The specified pneumonias can be equipped with suction and return valve float, and switchgear /not shown/. He is driven cyclically by compressed air supplied from the compressor 2, and the hydrostatic pressure of the surrounding water. This water rises in the pipe and is discharged into the tank 15. Opens the valve control 17 and the water che is almost not reduced, in the pit:20 is filled through openings in the side wall in the infiltration of river water through the bed. In case the overflow tank 15 water drained through the drain pipe 12. If necessary, carrying out repair and maintenance works or disable the installation of the water wheel 1 is removed from the stream.The proposed installation is simple, reliable and energy efficient. It can operate in three modes: receive the compressed air, electricity and water supply. This is due to the fact that the installation includes three systems, one of which provides for receiving compressed air, the second - convert compressed air energy into electric energy, the third water supply. These systems have in common, the energy - water wheel kinematically associated with the compressor. The drive of the compressor is carried out by the energy of the hydraulic flow. The installation consists of simple and accessible structural elements.SOURCES OF INFORMATION 1. A. C. the USSR 1624198, F 03 B 17/06, 30.01.1991.2. A patent for an invention 2166123, F 03 In 13/00, 27.04.2001 prototype.
Claims1. Hydropower plant, including shore well supplied with water from the tell cavity with water until the water level in the river, set in the flow of the river water wheel driven by the energy of the specified stream, the compressor with the intake air from the atmosphere and the discharge line of the air in the receiver, characterized in that the lifting device is designed as pneumonias immersed in the well below the water level therein, the installation is also equipped with a turbo-generator to convert the energy of compressed air into electricity, while the compressor through the discharge line of the air in the specified receiver and additional valve control connected by the turbogenerator.2. Installation under item 1, characterized in that the discharge line of the air between the secondary valve control and turbine generator set pressure reducing valve that supports the constant pressure of air supplied into the cavity of the nozzle of the turbine.
FIELD: oil and gas extractive industry.
SUBSTANCE: device has metallic hubs of stator and rotor, wherein crowns of stator and rotor are concentrically pressed. Crowns of stator and rotor are made of durable ceramics and are additionally equipped with connections, allowing to exclude non-controlled turning of crowns in hubs and spontaneous axial displacement thereof.
EFFECT: higher reliability and efficiency.
FIELD: turbines using kinetic energy of liquid flow.
SUBSTANCE: proposed turbine has turbine case , stay ring with cascade of stay vanes, wicket-gate mechanism with cascade of adjustable vanes, operating element with cascade of flange-mounted blades and drive shaft coupled with electric generator step-up gear, operating element chamber, and draft tube. It is also provided with straightening mechanism that has cascade of vanes, chain transmission that has sprockets and shafts; external and internal rims are made in cross-sectional areas in the form of ovals. Cascade of blades is made in the form of caterpillar cascade. Operating element blades are cylindrical in shape and hinge-joined through chain transmission whose drive sprocket is coupled with drive shaft. Flanges of operating element blades are provided with supporting rollers mounted in fixed supports and joined with chain transmission shafts at distances of two adjacent operating-mechanism blades; guides are made in the form of oval junctions joined with turbine internal rim in vicinity of their abutting against butt-ends of flanges carrying operating element blades.
EFFECT: enhanced turbine efficiency.
1 cl, 4 dwg
FIELD: mobile generator plants.
SUBSTANCE: proposed generator plant has frame that mounts power unit, foot-operated air pump, and compressed-air cylinders whose air lines communicate with generator plant. Control panel is electrically connected to output of electric generator vertically installed on generator plant housing and mechanically coupled with exciter and power unit made in the form of vertical-shaft pneumostatic motor. The latter has sealed case with inlet, outlet, and safety valves closed with cover that accommodates vertical rotor mounted in case and cover bearings and made in the form of shaft with two power drives attached thereto by means of U-shaped frames. Power drives are installed on either side of vertical shaft and spaced 180 deg. apart in horizontal plane. Each of them has a number of similar members symmetrically mounted one on top of other, their quantity being dependent of desired power. Each member is essentially rhombic plate made of light-mass and high-strength metal whose longitudinal axis is longest diagonal parallel to that of other power drive. Through ducts are provided on front ends of rhomb and L-shaped blind ducts, on its rear butt-ends. All these ducts are closed with covers kinematically coupled with drive cylinder piston. Compressed air fed to sealed housing opens covers, and unbalanced forces are built up on each member which set power unit in rotary motion. Air evacuation from sealed housing closes covers with the result that no forces are built up on drive members.
EFFECT: enhanced power output and torque.
2 cl, 21 dwg
FIELD: power engineering.
SUBSTANCE: device is designed for converting kinetic energy of free flow of water into electric energy. Proposed microhydroelectric station contains hydraulic turbine with horizontal axle of rotation connected with submersed sealed electric generator. Station is provided with carrying frame consisting of sections on ends of which shields are installed to form confuser at inlet of water flow, and diffuser at outlet. Slow speed generator is used as electric generator whose shaft is directly connected with shaft of hydraulic turbine consisting of separate sections mounted on bearing supports. Each section contains one or more blade propulsors displaced through equal angle relative to each other. Each propulsor has two blades pointed in opposite directions being essentially NASA section modified by provision of cavity on lower plane, maximum depth of which being from 10 to 14% of maximum height of section and installed on posts secured on shaft of hydraulic turbine for fixed displacement of blades in radial and angular directions.
EFFECT: reduced cost of manufacture and mounting.
FIELD: engine manufacturing.
SUBSTANCE: invention relates to method of operation of self-contained power station powered by diesel-generator set. According to proposed method of operation of self-contained power station powered by diesel generator set equipped with additional flywheel and disconnect clutch with automatic control members, additional flywheel is mounted on separate shaft which is connected with diesel-generator set by means of disconnect clutch. Preparatory operation is carried out to set power station into operation with subsequent overcoming of short-time starting resistances from consumer. Additional flywheel is connected to shut down diesel generator set by means of disconnect clutch. Power station is started under no load, and its coming to rated speed is detected by readings of generator shaft speed pickups. Load is connected and intensity of generator shaft speed drop is checked. Information is automatically transmitted to controller wherefrom, at termination of generator speed drop, signal is transmitted to disconnect clutch, and rotating additional flywheel is disconnected from diesel generator set, thus changing the set for accelerated mode of restoration of initial rated speed.
EFFECT: provision of power saving operation at stable conditions for overcoming designed resistance torque and short-time overloads exceeding capabilities of chosen supply source.
FIELD: hydraulic engineering.
SUBSTANCE: device is designed for converting kinetic energy of small and medium rivers into elastic energy. Proposed hydraulic unit contains hydraulic turbine installed on frame with bearings on its shaft, generator mechanically coupled with hydraulic turbine, stream shaper and device in form of plates to protect hydraulic unit from floating debris. Hydraulic unit has intermediate vertically and horizontally installed shafts with bearings interconnected by conical gears. Vertical shaft is arranged in well built near bank and communicating with river by channel made under level of maximum possible thickness of ice cover. Part of horizontal shaft connected with hydraulic turbine is arranged in said channel. Upper end of vertical shaft is connected with generator through ground horizontal shaft and step-up reduction unit. Stream shaper is made in form of flaps installed on shaft for turning to direct water stream of river to its central part between which turnable gate is installed for contacting with one of flaps to direct water stream to right-hand or left-hand side of hydraulic turbine.
EFFECT: provision of reliable operation all year round.
3 cl, 2 dwg
FIELD: power engineering.
SUBSTANCE: plant is designed for generating electric energy and pumping of water. Proposed device contains floating base in form of catamaran with channel between housing of catamaran in which water wheel with blades on its outer surface is mounted, and electric generator mechanically coupled with shaft of water wheel. Diameter of water wheel is less than its length. End faces of water wheel are covered, and front profile of water wheel blades is made to logarithmic spiral. Moreover, plant is furnished with water pump, and drive of electric generator is made in form of step-up harmonic gearing whose flexible gear is coupled with end face of water pump. Output shaft of step-up gearing is aligned with shafts of water wheel and electric generator, being coupled with water pump by step-up belt drive. Drive sheave of step-up belt drive is installed on shaft of electric generator. Controllable clutches are installed on shafts of belt drive.
EFFECT: improved reliability and enlarged operating capabilities of plant.
2 cl, 3 dwg
FIELD: machines or engines for liquids.
SUBSTANCE: device comprises converter for converting flow power into kinetic energy of rotation and hydraulic turbines connected in series. The hydraulic turbine is made of hollow load-bearing shaft-cylinder with conical deflectors on the bases. The semi-cylindrical blades are secured to the shaft-cylinder along the generatrix of the cylinder or at an angle to the generatrix. The load-bearing shaft-cylinder is inscribed into the inner ends of the semi-cylindrical blades, and their outer ends tightened by means of rings define multi-blade cylinder provided with variable buoyancy that is controlled by ballast in the hollow section of the shaft-cylinder. The hydraulic turbine can be submerged into water completely or partially and interposed between the bearings and connected with the actuating mechanism through flexible links, clutches, and gearings. The actuating mechanism comprise one or several massive inertia flywheels made of disk or drum or cylinder connected through clutches and gears with the consumer.
EFFECT: enhanced efficiency.
3 cl, 9 dwg
FIELD: electromechanical engineering.
SUBSTANCE: proposed generator primarily designed to supply with power borehole instrument of face telemetering system in the course of boring has internal stator and rotor; the latter mounts turbine in its front part that has casing carrying rectangular- or trapezoidal-section helical blades. These blades are free to vary their angle of lift depending on conditions of borehole washing with drilling fluid. Blades may be made of flexible material and have two parts of which one part is joined with turbine casing and other (loose) part is free to bend in transverse plane. In addition, blades may have variable stiffness in cross-sectional area and variable height of cross-section profile; loose parts of blades may be joined with ring. Blade turn limiter responding to maximal discharge of drilling fluid may be provided on the turbine casing.
EFFECT: enhanced operating reliability and extended variation range of drilling fluid discharge through generator turbine.
7 cl, 2 dwg
FIELD: hydraulic power engineering.
SUBSTANCE: proposed hydraulic turbine generators are designed for creating stationary and portable hydraulic plants of modular type. Generators have rotor with central shaft non-rotating around horizontal axis or vertical axis (as version) on which chain drive gears are rigidly fitted, each being coupled through independent chain drive with planet pinion members arranged radially and uniformly around central shaft. Each member has blade reduction gear consisting of gear of chain drive and of large and small cylindrical gears, the latter being coaxial and rigidly coupled with gear of chain drive of blade reduction gear, and large cylindrical gear is rigidly secured on axle of blade installed horizontally for generator (or vertically, as version). Each blade rests by ends of its axle for rotation on brackets secured on hubs by bases. Hubs are installed on both ends of shaft for rotation and tops of brackets at both ends of central shaft are connected by ring rims being drive wheels connected with energy converters by flexible drive.
EFFECT: provision of effective and reliable operation.
3 cl, 4 dwg