SU1010207A1 - Vibration insulator for foundation under turboelectric unit - Google Patents

Abstract

VIBRATION EQUIPMENT OF A FOUNDATION UNDER TURBOAGREGAT, including the upper and lower base plates, installed, between them, restrict the shock absorbers. oscillations, each of which consists of an upper and a lower element attached to the corresponding plates and otishovlenny relative to each other with a gap, the value of which is equal to the permissible amplitude of oscillations of the turbo unit, and the surface of one of the elements of the oscillation limiter turned to the jcB yroMy element is covered with an elastic shell, about tl and "citing the fact that, p. the purpose of ensuring the limitation of oscillations of any direction in transient modes of operation of a turbine unit, one of. the elements of the limiter are made in the form of a sphere with a hole in the wall, and the other is in the form of a sphere of a ball with a rod placed inside, three-way {e |) through the opening of the sphere and attached end to one of the plates.

Description

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The invention relates to construction and is intended to create the foundations required for installations. High power turbine units on them. A foundation for a turbine unit consisting of a bottom plate, an upper structure, supported on spring-mounted vibroelectric motors, mounted on a relatively rigid frame structure or rack and containing an oscillation limiter, made in the form of rods, set with a gap between their ends flj. The disadvantage of the known foundation is its poor vibration in the transverse direction and the insufficient effectiveness of limiting the oscillations of the scientific research institute. The closest to the technical essence of the invention is the vibration insulator of the foundation for a turbine unit, including upper and lower support plates, shock absorbers and vibration limiters installed between them, each of which consists of upper and lower elements attached to matching plates and installed relative to each other with a gap, the value of which is equal to the permissible amplitude of oscillations of the turbine unit, with the surface of one of the elements of the oscillation limiter facing the other element, digging sheath 2. The disadvantage of this vibration isolator is the impossibility of ensuring the limitation of oscillations in different directions. The purpose of the invention is to ensure the limitation of oscillations of any direction in transient modes of operation of a turbine unit. The goal is achieved by the fact that in the vibration isolator of the foundation for the turbine unit, including the upper and lower base plates, is installed. The shock absorbers and vibration limiters between them, each of which consists of upper and lower elements, are attached to the respective plates and are set relative to each other with a gap, the value of which is equal to the allowable vibration amplitude of the turbine unit, with the surface of the ONE of the vibration limiter elements facing the other element , is covered with an elastic shell, one of the elements o5: the delimiter is made in the form of a sphere with a hole in the wall, and the other is 6 of the form of a ball opening inside the sphere with a rod, prop strung through the hole of the sphere and attached end to one of the plates. Figure 1 shows the foundation, a general view, figure 2 shows the vibration isolator, and figure fig.3 shows section BB in figure 2. The foundation of the turbine unit 1, which consists of the upper structure 2, resting on flexible racks 3, the base plate 4. Vibration insulator 5 consists of the bottom plate and the upper 7 base plates, between which are located, shock absorbers, made in the form of spring ,,,,. „„ .. ,, Zhin 8 and limiter 9 vibrations. The oscillator 9 is made in the form of a rod 10 welded to the upper support plate with a solid ball 11, covered with elastic sheath 12 entering the sphere 13 welded to the lower support plate. Sphere 13 is made of two or more parts interconnected. A gap is provided between the sphere 13 and the elastic shell 12. . The operation of the proposed foundation vibration isolator for the ocy-V turbine unit is as follows. : .. Oscillations are transmitted from the top; building 2 through the top 7 base plate and the rod 10 on the sphere 13, with an amplitude exceeding the allowable,;. which is equal to the gap-between. the sphere and the rubber shell are transmitted to the rubber shell 12, and through it to the sphere 13, the lower support plate and flexible supports 3, with which they are extinguished. At the same time due to the rigidity of the specified. This system eliminates cantilever vibrations of the pillars 3. Thus, the maximum vibrations of the upper support plate are limited by the inner surface of the sphere. The design limits the amplitude of the resonant oscillations of the foundation in any direction in the transient modes of operation of the turbine unit and allows you to adjust the damping values in the shock absorbers, thereby reducing the amplitude of oscillations of the foundation in the operating mode of the turbine unit. . Thus, in the foundation it is in-, lats: the ability to significantly reduce the size of the base plate by improving its vibration-insulating properties and reduce its consumption of materials,

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Claims (1)

VIBRATION INSULATOR UNDER TURBO UNIT, including upper and lower base plates, installed, shock absorbers between them, and limit vibration waves, each of which consists of the upper and lower elements · attached to the respective plates and installed relative to each arc with a gap of equal permissible oscillation amplitude of the turbine unit, and the surface of one of the elements of the oscillation limiter, facing the other element, is covered with an elastic shell, which is characterized in that, p. In order to ensure the limitation of fluctuations of any direction in transient modes of operation of a turbine unit, one of the elements of the limiter is made in VI * - ^! de spheres with a Hole 'in the wall, and the other - in the form of a ball placed inside a sphere with a rod passed through the hole of the sphere and attached with an end to one of the plates.