Turbogenerator foundation slab

FIELD: mechanical engineering, particularly large electrical machines and foundations for turbogenerator and hydraulic generators.

SUBSTANCE: foundation slab comprises stator body base including support part connected with foundation. Arranged between support part and foundation is damping panel including reinforcement formed as vertical rods. Foam plastic member is put on the vertical rods and grouted with concrete grout. Vertical rods are connected one to another in horizontal plane with wire arranged at least in two levels in vertical plane of damping panel. Vertical rods extend through support part, pass into stator body base and into foundation.

EFFECT: reduced dynamic pressure applied to foundation slab and increased structural rigidity.

1 dwg

 

The invention relates to the field of electrical engineering, mainly to large electric machines, and more particularly to Foundation plates, designed for the installation of the turbo-and hydrogenerators.

Known devices [1, 2], which consist of reinforced concrete, including concrete and rebar. To reduce the deflection plate and allow regulation of the stiffness properties of the plate it is provided with notches on its side surfaces which taper in height and width in the direction from the periphery of the plate to the middle of it, and on the walls of the cutouts perform reinforcement bars with fixing them wire mesh [1] or between the turbine and the Foundation place of the supporting part is made of welded steel and integrally connected to the Foundation by means of bolts and concrete, as well as place the base part and the metal strip [2].

Known construction reduces unwanted deflections of the plate, however, when using the known constructions, the pressure on the Foundation from the electric machine is transmitted almost entirely that long-term dynamic loads on the stove, resulting in adverse operating regimes of large electric machines, such as acceleration and braking, can lead to premature mechanical damage of concrete on the first, that can lead to an emergency situation. In addition, the rigid connection of the stator housing with a concrete base eliminates the possibility of movement of the stator relative to the base plate in the axial direction, for example, that it is necessary to ensure the appearance of rotating drums [3].

It is also known a device in which is provided a weakened and limited lifting the base of the housing from the base plate in the axial direction, which is achieved due to the fact that as a fastening means is used passing through the base of the cylindrical pin, allowing easy lifting of the case base [3]. the fastening device of the electric machine, high power horizontal shaft carried on a Foundation made of concrete. The base of the stator rests on the base plate and fixed by means of special devices, which limit the movement of the stator relative to the base plate in the radial and axial directions.

When the shock occurs rotating moment is possible weakened and limited lifting the base of the housing from the base plate by using passing through the base of the cylindrical pin, allowing easy lifting of the case base. However, as the devices [1, 2], the pressure on the Foundation from the electric machine is transmitted almost completely under extreme operating modes of the electric machine can disrupt the mechanical strength of a base plate with subsequent negative consequences.

Object of the present invention is to reduce the dynamic pressure on the base plate with a simultaneous increase in the rigidity of the structure.

The problem is solved due to the fact that in a base plate designed for installation under the turbine, consisting of a Foundation, which was a concrete, including concrete and rebar, the supporting part integrally connected with the base by means of fastening means between the supporting part and the Foundation hosted a damping plate, made of foam, concrete and reinforcement in the form of a vertical rod, which passes through the damping plate, the supporting part and is the basis and Foundation of the stator housing, and the terminals are connected in the horizontal plane wire, placed on at least two levels in the vertical plane the damping plate.

Between the supporting part and the Foundation of the damping plate, made of Styrofoam and concrete and through it the valve is made in the form of a vertical stem is th, included in the supporting part, with openings and interconnected in a horizontal plane wire, placed on at least two levels in the vertical plane, provides damping of the dynamic pressure on the Foundation due to the damping effect of the damping plate, which is ensured by the fact that the rods passing through the foam, interconnected by wire on at least two levels in the vertical plane, and a connection base plate with the supporting part by means of rods increases the rigidity of the structure as a whole, and optionally provides the ability to move the base of the stator housing relative to the base plate.

New in the invention is the placement of the damping plate between the supporting part and the base, which is made of foam and concrete, and pass through the armature is made in the form of rods, connected by a wire in a horizontal plane at least at two levels in the vertical plane and connected to the support plate. This set of new features from the prior art have been identified that allows to make a conclusion on compliance of the claimed invention, the condition of patentability "inventive step".

The invention participation in the workforce is employed in the drawing, which shows the base of the stator housing 1, a base part 2, the damping plate 3, Foundation 4, the rods 5,the wire 6, the foam 7.

The damping plate 3 is a structure comprising rods 5 connected by a wire 6. On the rods 5 seated figure foam, filled with concrete mortar. This design of the damping plate creates a cushioning effect due to the connection terminals wire on at least two levels vertically and placed in the foam, filled with concrete solution that provides damping of the dynamic pressure on the Foundation, and the placement of the rods throughout the depth of the damping plate and the supporting part with the capture of the base of the stator and of the Foundation increases rigidity and restricts the movement of the stator relative to the base plate in the radial direction, and you are experiencing the shock of the rotating moment of the availability of lifting the base of the stator housing by mounting the base on the rods.

Implementation of the claimed invention, the technical complexity is not, as implemented through the common elements and materials. In addition to the use of the claimed device in large-scale Electromechanical engineering, it can be used in marine conditions as fu is dementa under power machines and units dynamic load which is most noticeable during adverse weather conditions, which allows to make a conclusion on compliance of the claimed invention, the condition of patentability "industrial applicability".

Sources of information

1. USSR author's certificate No. 1463869.

2. Titov, V.V., Khutoretsky G.M., Zagorodniy G.P. Turbogenerators. Calculation and design. HP, Energy. 1967, s-151.

3. German patent No. 2440548.

Base plate under the turbo-generator that includes a base housing of the stator of the supporting part connected to the base, characterized in that between the support part and the Foundation hosted a damping plate, comprising a valve in the form of a vertical rod, which is mounted foam, filled with concrete floor, connected by a horizontal wire, placed on at least two levels in the vertical plane of the damping plate, and vertical rods pass through the abutment part is fixed in the base of the stator and in the Foundation.



 

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