Sealing system real time controllable derotation flow shock-absorbing device in impeller machinery

Abstract

The invention relates to a real-time controllable derotation flow vibration damper of a seal system in an impeller machine which is mainly used for reducing the vibration of a rotor seal system or vanes, and is mainly applied to the industrial rotating machines like a compressor, a steam turbine, a gas turbine, a turbopump, and the like. The real-time controllable derotation flow vibration damper of a seal system in an impeller machine comprises a real-time signal detecting and analyzing system, as well as an actuating system; the invention is characterized in that the real-time signal detecting and analyzing system comprises an eddy-current displacement sensor, a pressure sensor, a connection terminal, a signal modulating module, a data collection card and a computer; the actuating system of the controllable derotation flow vibration damper comprises an air pump, a storage tank, an electric adjusting valve/electromagnetic adjusting valve, a multi-way joint, a pipeline and a nozzle. Compared with the existing derotation flow technology, the device carries out adjusting and controlling by continuously detecting the changes of the parameters like the vibration size, the medium pressure and flux of the system in real time, has a good vibration damping effect, can not affect the running efficiency of a machine unit, and more importantly, can not cause the vibration of the machine unit.

Description

Technical field: [0001] The invention is a real-time controllable anti-swirl vibration damping device for the sealing system in a turbomachinery. Its main function is to reduce the vibration of the rotor sealing system or blades. It is mainly used in industrial rotating machinery such as compressors, steam turbines, gas turbines and turbo pumps. superior. Background technique: [0002] In recent years, petrochemical complete sets of equipment and generating sets have developed towards large-scale, continuous and high-efficiency, so their core equipment compressors, steam turbines, gas turbines and other rotating machinery are also developing towards high load, high speed and high efficiency. However, in the process of development, the continuous increase of the medium pressure of the unit and the continuous reduction of the sealing gap have become a pair of contradictions, and the resulting vibration of the sealing fluid has also become prominent, becoming one of the main fa...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that the existing anti-swirl flow technology cannot adjust the injection pressure and injection volume in real time on-line, the present invention proposes a real-time continuous controllable anti-swirl flow damping device to realize real-time and continuous active control of the anti-swirl flow

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