Abstract: In order to meet the special requirements of continuous transonic wind tunnel for the main circuit driven compressor, including wide operating rang, excellent aerodynamic performance, high rotational speed control accuracy, tight sealing, and safe and reliable surge prevention, a compressor was designed for 0.6 m continuous transonic wind tunnel, and the test verification was also made through mechanical running test, air tightness test, rotational speed control accuracy test, thermal performance test, and surge prevention test. The compressor's inlet chamber is integrated with the first corner of the wind tunnel and its outlet chamber is integrated with the second corner by adopting the integrated design concept. The structures of inlet and outlet chambers are compact, the gas flow is uniform, and the pressure loss is lower. The gas seal and cavity are used to effectively prevent the leakage of lubrication oil into the wind tunnel, the leakage of test gas out of the wind tunnel and the leakage of wet air into the wind tunnel. The master-slave control mode and vector control technology are used to realize the synchronous driving of two motors successfully. The test results show that the design of compressor for 0.6 m continuous wind tunnel is reasonable, of which aerodynamic performance is excellent, operation is stable, sealing effect is good, speed control accuracy of compressor is better than 0.03%, and surge prevention is safe and reliable.

Key words: continuouswindtunnel, drivencompressor, axial-flowcompressor, integrateddesign, seal, anti-surge