RU2433321C2 - Electromechanical plant - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: generating electric machine is installed into a concreted cofferdam of open ground. The shaft of its rotor is fixed at the bottom and at the top in radial bearings, and on the top it is connected with an impeller by means of an intermediate assembly - a driving bushing, which is connected from inside with a splint joint to the electric machine rotor shaft, and from outside it is rigidly fixed to the impeller's hub. The vector of the impeller's weight value is transferred via the driving bushing that rests against the thrust bearings of a girder plate installed onto a crosspiece fixed with support pillars. In the electric machines with vertical axis of rotor rotation the vertical load at support elements is considerably reduced.

EFFECT: development of an alternative electromechanical source of power generation.

2 dwg

Description

The technical solution relates to non-traditional electric power industry, and more specifically to low-power synchronous explicitly polar low-speed electric machines (current generators) with a vertical axis of rotation of the rotor.

Known rotary-blade hydraulic turbine (see the invention description to the AS of the USSR No. 1735001, IPC F03B 13/00) containing an impeller, a planetary gear of the mechanism for simultaneously changing the angle of the blades, thereby achieving better conversion and use of the kinetic energy of the working fluid W (water) under hydrostatic pressure H, moving at a mass flow rate Q to the tangent force F and then at a torque of M BP. turbine shaft.

A hydraulic unit is also known (see the description of the invention to the USSR AS No. 1227827, IPC F03B 3/00), containing an electric generator with a rotor, a radial-axial vertical hydraulic machine including an impeller located below, a shaft, guiding bearings, and a thrust bearing. In this device, the generator transmits a torque of M BP. radial-axial turbine, which converts the kinetic energy of a moving working fluid W (water) under hydrostatic pressure H, with a mass flow rate Q to the tangential force F, and then to the rotational moment M BP. shaft.

A common and main disadvantage of the above hydraulic devices is that in order to obtain electrical energy for their operation, it is necessary to have the calculated amount of the working fluid W (water) in place, the need to create a certain hydrostatic pressure h and ensure its uninterrupted long-term mass flow rate Q through the impeller, and To do this, build hydraulic structures.

The purpose of the technical solution is to create an alternative source of electric energy.

This goal is achieved by the fact that the electromechanical installation additionally includes: a caisson in an open ground, a foundation of a caisson, a truss frame with thrust bearings and a drive sleeve, while an electric machine is installed in a caisson of open ground, a fixed stator is installed on the foundation of the caisson, a vertical rotor shaft bottom equipped with a current collector for supplying electric energy to the rotor excitation, a lower centering radial bearing and mounted on a thrust bearing with a thrust bearing on the foundation of the caisson, the upper part l the rotor shaft is installed in the upper centering radial bearing in the crosspiece, fastened to the support columns, the truss plate is mounted on the crosspiece with the support bearings at the top, on which the drive sleeve is located, which is in the vertical sliding contact on the rotor shaft, and its upper inner part and upper the outer part of the rotor shaft is provided with a spline connection, in which they are constantly located.

In the drawings presented: figure 1 shows the design of an electromechanical installation (section along a vertical diametrical plane). figure 2 shows the design of the electromechanical installation (section along the horizontal plane aa).

The list of positions in the drawings:

1 - caisson,

2 - soil

3 - reinforced concrete wall in the ground,

4 - stator

5 - stator foundation,

6 - rotor

7 - rotor shaft,

8 - current collector,

9 - lower centering bearing

10 - thrust bearing of the rotor shaft,

11 - the foundation of the caisson,

12 - supporting column,

13 - cross

14 - I-beams

15 - support and alignment plate,

16 - upper radial bearing

17 - plate farm

18 - thrust bearings,

19 - drive sleeve

20 - spline connection

21 - castle

22 - hub

23 - hole for the stud.

The design of the electromechanical installation. In open ground 2 (see Fig. 1), a caisson well 1 with a reinforced concrete wall 3 is installed, in which an explicit pole electric machine is installed - a synchronous current generator, its stator 4 is installed on its prefabricated foundation 5 of the stator, and rotor 6 with a vertical shaft 7, in the lower part of which there is a current collector 8 with rings for connecting an autonomous DC source with its field winding. The vertical position of the rotor shaft is fixed by the lower centering radial bearing 9. The rotor shaft 7 is mounted on the thrust bearing 10 with a thrust bearing in an oil bath, which is rigidly fixed to the foundation 11 of the caisson. Support casing 12 is installed in the caisson 1, which are rigidly fastened at the top with a cross 13 made of mutually perpendicular I-beams 14 with a high wall (to increase the moment of inertia), at the intersection of which there is a support-alignment plate 15 with an upper centering radial bearing 16, through which passes the upper part of the rotor shaft 7. A plate-truss 17 is installed on the crosspiece 13, which serves as a platform for large-sized thrust bearings 18, on which the drive sleeve 19 is located, which is in vertical sliding contact with the rotor shaft 7, and its upper inner part and the upper outer part of the rotor shaft are provided with a spline connection 20, in which they are constantly located, and the splines of the sleeve protrude beyond its inner diameter, and the splines of the rotor shaft 7 do not protrude beyond its diameter. The hub 22 of the impeller and the drive sleeve 19 are equipped with a lock 21 and holes for the stud 23.

Work. When the impeller is mounted, all of its mass will be transmitted through its hub 22 to the drive sleeve 19, which, in turn, through the support bearings 18, the support plate-truss 17 and the crosspiece 13 transfers these forces to the support columns 12. The drive sleeve 19 has a shaft 7 rotor sliding vertical contact, fixing it on the shaft 7 of the rotor. Thus, the impeller will not load the shaft 7 of the rotor, but at the same time gives it a torque of M BP. with an angular frequency Ω by means of a spline connection, in which the drive sleeve 19 and the rotor shaft 7 are constantly located.

The fixed connection of the impeller hub 22 with the drive sleeve 19 is provided by an annular lock 21 and vertical studs for which openings 23 are provided.

The effect of the technical solution is that it was possible to get rid of the need to place hydraulic electric generating machines on the Earth's surface with the corresponding natural resources of the working fluid W (water), or when using natural or artificial elevation differences.

In electric machines with a vertical axis of rotation of the rotor, the vertical load on the supporting elements is significantly reduced.

Claims (1)

An electromechanical installation for an electric power unit, comprising an electric machine with a fixed stator and a vertical rotor shaft, which is installed in the upper and lower centering radial bearings, support columns and a crosspiece, characterized in that the drive sleeve, support bearings and a truss plate are additionally inserted into it, while the supporting columns are installed on the foundation along a circle of radius not less than the radius of the drive sleeve and connected from above by a cross on which is installed in the horizon the plate-truss plane with one, two or several support bearings, on which the drive bush is located, which is in the vertical sliding contact on the rotor shaft, and its upper inner part and the upper outer part of the rotor shaft are provided with a spline connection, in which they are constantly located.

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