SU1514977A1 - Turbomachine stator - Google Patents

Abstract

This invention relates to a power plant industry and can be used in turbomachine stators. The purpose of the invention is to increase the reliability of operation by reducing the vibration of the stator elements. The stator of the turbomachine includes a housing 1 with support legs 2 mounted on a frame that is installed on the foundation, an oscillation damper that is made in the form of a cylindrical cavity 7 made in the frame support plate under each support foot 2 of the housing 1, and a piston 8 located in it rod 9 with the formation of sealed chambers 10 and 11. In the piston 8 are made throttle channels 13, the chamber 10 is connected to the hydraulic line 6 of the oil system. The free end 12 of the rod 9 is rigidly fixed to the base plate of the frame using the rack 17. The weight of the housing 1 is compensated by the pressure of the mass in the chamber 10. When vibrations during operation of the turbomachine in the vibration damper, oil flows from the sealed chamber 10 into the chamber 11 and vice versa 13. The resistance of the throttle channels 13 to the overflow of oil is chosen so that the moment from the forces of resistance to the flow of the liquid is greater than the moment of forces that force the oscillation of the support leg 2. As a result, the housing 1 will vibrate or there will be no or it will quickly fade out. 3 il.

Description

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It is pressurized by mass in chamber 10. When vibrations occur during the operation of a turbo-machine, in an oscillation damper, oil flows from a sealed caliper 10 into chamber 11 and vice versa through throttle channels 13. Resistance of throttle channels 13 to overflow

the oil is chosen in such a way that the moment from the forces of resistance to the flow of the liquid is greater than the moment of the forces that force the oscillation of the support paw 2. As a result, the vibration of the housing 1 will either be absent or attenuate quickly. 3 il.

The invention relates to power engineering and can be used in the stators of turbomachines.

The purpose of the invention is to increase the reliability of operation by reducing the ibration of the stator elements.

Figure 1 shows a turbo stator stator, view; Fig. 2 shows a section A-A in Fig. 1; on fig.Z - node I in figure 2.

The turbomachine stator includes a housing 1 with support legs 2 fixed on frame 3, which is mounted on foundation 4, a stator oscillation damper 5 and a hydroline 6. The vibration damper 5 is made in the form of a cylindrical cavity 7 made in frame 3 under each support leg 2 the housing 1, and the piston 8 placed in it with the rod 9 to form hermetic chambers 10 and Г1 in the over-piston and sub-piston spaces. Moreover, the free end 12 of the rod 9 is rigidly fixed on the clamp 3. The piston 8 has throttle channels 13 which connect the hermetic chambers 10 and 11 to each other, and at least one of the chambers, for example, 10, is connected to the hydraulic line 6 of the oil system.

The frame 3 is provided with a base plate 14. The frame 3 can play the role of a butter chuck, forming with the body 1 a single unit 15 mounted on the foundation 4. The free end 12 of the rod 9 is rigidly fixed to the base plate 16 of the frame 3 by means of the rack 17. The base plate 16 of the frame 3 is rigidly attached to the foundation 4 by anchor bolts 18 with plates 19. The piston 8 is ioporn, and the plate 14 is equipped with rubber sealing rings 20. which seal the chambers 10 and 11 and form

drain chambers 21 and 22; The damper 5 of the oscillations is provided with a drain pipe 23. The foot 2 is attached to the base plate 14 of the frame 3 by means of studs 24,

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During the operation of the turbomachine, the oil pressure in chamber 10 compensates for the weight of body 1 falling on each support leg 2. The vibration is transferred by support leg 2 to support plate 14 of frame 3, due to the fact that the axle 8 is rigidly connected through stand 17 to The lower base plate 16, paw 2 and the support plate 14 simultaneously move by the magnitude of the oscillation amplitude relative to the piston 8 in the directions of the driving force, for example, towards the foundation 4. At the same time, the volume of the sealed chamber 10 above the piston 8 is reduced, and the volume of the sealed chambers The pistons 11 under the piston are enlarged. As a result, through the throttle channels 13, the oil flows from chamber 10 to chamber 11.

Claims (2)

The resistance of the throttle channels 13 to the overflow of oil is chosen so that the moment from the forces of resistance to the flow of the liquid is greater than the moment of forces that force the paw to oscillate 2. As a result, the vibration of housing 1 is either absent or quickly damped. Invention Formula, I A stator of a turbomachine, comprising a housing with supporting legs mounted on a frame mounted on a foundation, a stator vibration damper and a hydraulic line, connected with a source of hydraulic medium, characterized in that, in order to improve operation reliability by reducing stator elements vibration , the stator oscillation damper is made in the form of a cylindrical cavity, made in the frame under each support paw of the housing, and a piston with a rod placed in it with the formation of sealed chambers in the above-piston and sub-piston space vah, wherein the free end of the stem is rigidly fixed to the frame, formed in the piston drossel515149776 One of the chambers is connected to the hydrolytic chamber with each other, and at least me.  -H) E g fia1 15 ) -: E3 e