Device for generating electrical energy through hydroelectric generator set
The device is intended to generate electricity. The device includes a generator with a rotor and a turbine, includes impeller, impeller shaft, mounted in a guide bearing, thrust bearing shaft and the suction pipe. Turbine wheel is made in the form of a pipe rigidly connected by spokes to the shaft of the impeller. The impeller blades are placed on the outer surface of the pipe and provided with adjustment angle. The generator has a mechanical form of execution and placed in the inner cavity of the tube. The rotor of the generator is Ambidextrous, its magnetic circuit with the exciting coils are placed with an air gap between the upper and lower end laminations of the stator of the generator and is rigidly fixed to the spokes of the impeller. The upper end of the magnetic core of the stator is placed in the groove, with the possibility of vertical displacement to change the axial distance between the magnetic circuits of the stator. The thrust bearing impeller shaft provided with an adjusting device for the vertical displacement of the impeller and is rigidly associated with the rotor. The design provides the possibility to adjust both air gaps to obtain cheaper electricity. 2 C.p. f-crystals, 3 ill.The invention relates to the electric power industry, namely, devices for generating electrical energy through hydroelectric vertical generating set, equipped with a turbine and generator. It can find application in power industry when creating a powerful energy systems with the use of generator units of reduced size and weight.The known device [Dombrovsky Century and other Design hydrogenerators, 2 hours. Design. Mechanical calculations. - M.: Energy, 1968, S. 17-288; E. Wiedemann and other Design electrical machines. - L.: Energy, 1972, S. 87-102; Abramov A. I. and other Calculation and design of hydro generators. - M.: Higher school, 1964] to generate electricity from hydroelectric generator unit vertical in which the rotor of the generator is on the same shaft with the impeller of the turbine, suprakash with him by means of a flange and the stator of the generator comprises a rotor on its outer cylindrical surface. The turbine is located under the generator. The disadvantages of such devices to produce electrical energy are the outside of the rotor increases, the radial dimensions of the generator.All this leads to an increase in the volume of construction works and investments in the construction of hydroelectric power.In known devices for generating electrical energy in the manufacture of generator and turbine consumes a large number of structural and special steel, which determines the high cost of the unit.The technical nature closest to the claimed invention can be considered as a unit [SU 1227827 A1, IPC F 03 3/00, 30.04.1986], which contains a generator with a rotor and a turbine, includes impeller, impeller shaft, mounted in a guide bearing, thrust bearing shaft and the suction pipe. Its disadvantages are increased radial dimensions that are associated with the design of the generator in which the stator comprises a rotor on its outer cylindrical surface and thereby increase the radial size of the unit, as well as the complexity of the structural forms of the shaft and rotor disc having a conical surface mating that results in a complicated manufacturing techniques of structural elements and increasing the value of the unit as a whole.The turbine is located under the generator rotor, which increases Axioma between the magnetic circuits of the stator and rotor, which leads to underutilization of the technical and economic indicators of the electric generator.Because the disk of the impeller of the turbine of known construction unit rests on the thrust bearing, it is possible that the water leakage on the heel.The claimed invention solves the problem of creating a device for generating electrical energy using a vertical hydroelectric generator unit, characterized by the reduced dimensions and weight, which will reduce the cost of received power by reducing investment in a hydroelectric plant, simplify the design of the unit and improve its maintenance.This is achieved by a device for generating electrical energy using a vertical hydroelectric generator unit containing a generator with a rotor and a turbine, includes impeller, impeller shaft, mounted in a guide bearing, thrust bearing shaft and the suction pipe, unlike the prototype turbine wheel is made in the form of a pipe rigidly connected by spokes to the shaft of the impeller, the impeller blades are placed on the outer surface of trusworthy cavity of the pipe, the rotor of the generator is Ambidextrous, its magnetic circuit with the exciting coils are placed with an air gap between the top and bottom end of the magnetic circuit of the stator of the generator and is rigidly fixed to the spokes of the impeller.Thus the top end of the magnetic core of the stator is placed in the groove, with the possibility of vertical displacement to change the axial distance between the magnetic circuits of the stator and the thrust bearing impeller shaft provided with an adjusting device for the vertical displacement of the impeller and is rigidly associated with the rotor.The invention is illustrated by drawings. In Fig.1 shows the cross-section of the generator set. In Fig.2 shows the method of attachment of the spokes to the shaft of the impeller. In Fig.3 shows a fragment of the double-sided magnetic system of the rotor.Hydroelectric power generator includes a generator and turbine.The generator is located in the inner cavity of the impeller 17 of the turbine. It consists (Fig.1) of two identical circular magnetic cores 1 and 2 of the stator, the top and bottom, facing each other work surfaces. In the slots of magnetic cores 1 and 2 are stacked m-phase windings 3 and 4. Magnetopause on a concrete Foundation. It is provided by the device for moving the chute 5 to install the required size of the air gap1between the magnetic core 1 of the stator and the upper poles of the rotor 7. The spider also has a guide bearing 8.The magnetic core 2 of the stator rigidly mounted on the lower cross-piece 9, which is based on a concrete Foundation. On the lower cross-piece posted by a guide bearing 10. Fixation of the upper yoke 6 and the lower yoke 9 is carried out by known methods, for example, using anchor bolts.Between cores 1 and 2 of the stator is a flat annular rotor of the generator, which is combined with the impeller turbines (Fig.2). The skeleton of the rotor consists of a sleeve 12 with the location of the annular disks 14 and 15, as well as spokes 13. The sleeve is fixed to the stationary shaft 11. On one side of the spokes 13 are fastened by screws to the annular disks 14 and 15, and on the other hand they are rigidly attached to the inner surface of the impeller of the turbine. On the spokes 13, in the space between the inner surface of the impeller of the turbine and annular disks 14 and 15, the top and bottom (Fig.3), a fortified rim of the rotor, consisting of vastav pole cores. In the grooves of the rims, top and bottom, are attached to the pole 21 with the exciting coils 22, together with certain elements of the upper and lower magnetic double-sided rotor with two working surfaces facing working surfaces of both magnetic circuits of the stator.The shaft of the generator unit 11 (Fig.1, 2) positioned vertically, based on the height of the two guide bearings 8 and 10, and rests on a thrust bearing 19 located in an oil bath 27.The shaft is provided with a Central hole 16, which is used for electrical power supply from the slip rings of power supply to the exciting coils of the poles. Above the upper crossbar is located exciter generator 28.Between the spokes 13 from the outer side of the impeller 17 is located vanes 18 with attachment points and the mechanism of rotation of the blades 29.To prevent leakage of water in the generator are two sealing devices, the top 23 and bottom 24.To install the required size of the air gap1between the upper magnetic core 1 and the upper surface of the rotor is provided by an adjustment device which contains, in particular, a threaded stud rigidly connected with Agena over the crossbar 6, and the other beneath it. Nuts are used to secure the trench 5 in the desired vertical position relative to the yoke 6. To move down the chute 5, rigidly connected to the magnetic core 1, release the top nut studs and povertyvajut to contact with the crossbar 6 of the lower nut. Thereby carry out the fixation of the trench 5 in the desired position relative to the yoke 6. If necessary, offset the gutter frees up the bottom nut studs and povertyvajut top nut.To install the required size of the air gap2between the lower magnetic core and the lower surface of the rotor includes a lifting mechanism of the thrust bearing. This mechanism includes a horizontal shaft located below the thrust bearing, which is provided with a rigidly associated Cam which is in contact with the thrust bearing. The drive end of the shaft extends beyond the dimensions of the unit. When the shaft rotates at a certain angle of the Cam acting on the thrust bearing, which causes the vertical displacement of the shaft 11 of the generator set.Device for adjusting clearance1and2may have other design. In case of equality1<2occurs resulting force directed along the axis of the shaft up, which partially relieves the generator thrust bearing Assembly and improves the conditions of his work.Hydroelectric power generator works as follows. Water from a pressurized reservoir through a guide device 25 is fed to the blades 18 of the impeller 17 of the turbine. If there is sufficient water pressure overcomes the mechanical resistance and begins to rotate the rotor of the generator set. When the supply current in the field winding of the generator produces a rotating magnetic field which induces in the windings of the magnetic cores 1 and 2 of the stator electromotive force. From working the annular chamber 26, the water goes into the outlet collector ring. During operation of the generator unit, depending on load conditions, the possible rotation of the turbine blades by means of the adjusting device 29.The proposed device for generating electrical energy helps to reduce dimensions and weight of the generator set, to simplify its contratante, what, ultimately, will help produce cheaper electricity.All the elements of the structure transportable in size and allow the installation of hydroelectric generating unit directly on the construction site.
Claims1. Device for generating electrical energy using a vertical hydroelectric generator unit containing a generator with a rotor and a turbine, includes impeller, impeller shaft, mounted in a guide bearing, thrust bearing shaft and the suction pipe, characterized in that the turbine wheel is made in the form of a pipe rigidly connected by spokes to the shaft of the impeller, the impeller blades is placed on the outer surface of the pipe and provided with adjustment of inclination, and the generator has a mechanical form of execution and placed in the inner cavity of the pipe, the rotor of the generator is made bilateral, its magnetic circuit with the exciting coils are placed with an air gap between the top and bottom end of the magnetic circuit of the stator of the generator and is rigidly fixed to the spokes of the impeller.2. The device according to p. 1, now offset to change the axial distance between the magnetic circuits of the stator.3. The device under item 1, characterized in that the thrust bearing impeller shaft provided with an adjusting device for the vertical displacement of the impeller and is rigidly associated with the rotor.
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