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.

Claims

1. 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.

 

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