In view of the phenomenon that the pressure energy of natural gas is wasted in the process of using the downhole throttling technology in the high pressure gas well, an idea of using triangular air-powered rotary engine to transform natural gas pressure energy to mechanical energy which drives the generator was put forward. Based on the structural features of traditional Wankel-type rotary engines, the overall structural design of a new triangular air-powered rotary engine was carried out and a new decompression scheme was set up. The internal flow field of air motor was simulated numerically by using CFD numerical simulation methods. The kinematics and dynamics simulation of mechanical system of triangular air-powered rotary engine was carried out by using ADAMS software, the contact strength between radial seal and cylinder was checked by Hertz contact theory, and the pressure endurance of cylinder was checked by using ABAQUS. Depending on the simulation data, the correctness of the design of the first stage rotary engine was verified and the design of the secondary rotary engine was defective. After raising the inlet temperature of the second stage rotary engine from 343 K to 353 K, the problem of hydrate generation when pressure and temperature dropped in cylinder was solved. The simulation results provide a new idea for the further study of triangular air-powered rotary engine.
ZHONG Gong-xiang, ZOU Di, ZHANG Xing. Design and simulation of triangular air-powered rotary enginebased on CFD and ADAMS. Chinese Journal of Engineering Design, 2019, 26(3): 305-314.
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