BY EXPANDER IN HIGH PRESSURE PNEUMATIC SYSTEM

Jia Guangzheng

(School of Mechanical Science and Engineering, Daqing Petroleum Institute, Daqing 163318)

Wang Xuanyin  Wu Genmao  Tao Guoliang  Chen Ying

(State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027)

Abstract: For improving the energy application of pressure reduction by expander in high pressure pneumatic system, the pressure reduction with classification control is proposed. It is a useful energy saving method proved by the energy compensating principle and property under the equal pressure condition. The mathematic model, the simulation and the experiment of the two steps control system are completed. The results show that the theoretical model approximately corresponds with the test; and the prerequisite of holding good control performance of the system pressure output is that the output pressure of the first step pressure reducing is higher than the critical input pressure of the second step pressure reducing.

Key words: High pressure pneumatic  Pressure reduction by expander  Classification control  Energy property

CLC No: TH138

国家自然科学基金资助项目(50122115). Received 20040920, received in revised form 20041207