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

A technology of sealing system and vibration damping device, which is applied in the direction of mechanical equipment, vibration suppression adjustment, spring/shock absorber, etc., and can solve the problems that the injection pressure and injection volume cannot be adjusted in real time online

Inactive Publication Date: 2010-06-30
BEIJING UNIV OF CHEM TECH
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  • Description
  • Claims
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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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  • Sealing system real time controllable derotation flow shock-absorbing device in impeller machinery
  • Sealing system real time controllable derotation flow shock-absorbing device in impeller machinery
  • Sealing system real time controllable derotation flow shock-absorbing device in impeller machinery

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Embodiment Construction

[0037] The real-time controllable anti-swirl vibration damping device of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] The present invention is a continuously controllable anti-swirl flow damping device, and an active closed-loop control system for real-time online continuous regulation of anti-swirl flow, as shown in the attached figure 1 shown. The eddy current displacement sensor monitors the vibration of the vibration system in real time, and converts the vibration into an electrical signal that can be collected by the data acquisition system. The data acquisition system performs filtering, amplitude modulation and other processing on the signal, and then inputs the signal into the control system. Calculate and determine the magnitude of the vibration, and give a control signal to control the opening of the electric regulating valve according to the magnitude of the vibration. One side of the electric contr...

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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 damperof 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/00
Inventor 何立东孙永强唐沸涛
Owner BEIJING UNIV OF CHEM TECH
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