Design And Experimental Study Of Rotor Vibration Control System For Centrifugal Compressor

With the development and progress of modern chemical industry, centrifugal compressor has become an important part of the production process. It has the advantages of small volume, large flow rate, light weight, high operating efficiency, less wearing parts, and non oil and gas pollution of the transporting gas. To a certain extent, the level of producing and operating of the centrifugal compressor has become an important symbol to measure a country's development and progress. With the development of high speed and high precision of modern centrifugal compressor, the vibration of rotor system has become an urgent problem to be solved in modern chemical industry. The vibration degree of the rotor system is an important factor to measure the reliability of the centrifugal compressor. The instability of the rotor Is a typical vibration fault. It is the main obstacle to the compressor large scale, it will bring a series of adverse consequences, like the damage to the relevant parts of the fatigue degree, the reducing of the work efficiency. Seriously, it can threat the safety of production personnel life and bring immeasurable loss to the social and industrial development. Therefore, it is very important to take effective measures to monitor the running state of the rotor and to make active control of the rotor vibration. Moreover, it can effectively save costs and ensure safe production.In this paper, to protect the normal operation of the centrifugal compressor rotor system, the hardware control system based on the electromagnetic controller is built. The electromagnetic controller was designed and the the measurement and control system was constructed to design the rotor vibration control system of the centrifugal compressor. The acquisition and processing system of the signal are also done. In the experimental environment, the related issues are studied. This paper mainly completes the following work:1. The design of the hardware architecture for the electromagnetic control system. For the vibration control of the rotor system, it is necessary to coordinate the hardware and software. The construction of electromagnetic control system is the basis of the rotor vibration control for the centrifugal compressor. Considering the complexity of the actual working conditions of the compressor, each part of the controller in the space distribution, layout and other aspects of the design will affect the application of electromagnetic control system. How to realize the rationality of the design of the hardware architecture of the electromagnetic control system is one of the problems that this paper focuses on. In particular, the design of electromagnetic actuator will be the basis to achieve the rotor vibration control. In this paper, a set of electromagnetic actuator rotor system on the centrifugal compressor test rig with different functions was set up. At the same time, a set of standard hardware platform is set up, which is used to identify the stability and vibration control of the rotor system of centrifugal compressor.2. The real-time control system was designed. The requirement of the data acquisition in rotor vibration control system of the centrifugal compressor is increasing day by day. The real-time performance of data acquisition and control has become an important indicator. The data acquisition and control program based on real-time system has become the mainstream. In this paper, the monitoring and vibration control system of rotor system of the centrifugal compressor was completed by using the NI(National Instrument) company's CompactRIO embedded measurement and control system. The reconfigurable field programmable gate array (FPGA) chassis, the real-time controller were used to write real-time software control platform. It would measure the bearing temperature, control current, rotor speed, flow and temperature of the lubricating system, etc. Moreover, to set the standard values, the early warning of rotor failure and the chain protection of the rotor system are carried out.3. According to the design of the hardware architecture and the real-time control platform of the electromagnetic controller, the experimental platform is built. The actual control effect of the hardware and software in the control system were tested. Through the experiment, it can effectively reduce the vibration of the rotor system.This paper focused on electromagnetic control system hardware and real-time control platform. Standard software and hardware system of electromagnetic control and stability test was built. The feasibility and reliability of the system was verified under the experimental conditions and provided reference for industrial applications.