US 12,305,658 B2
Performance test bench device for centrifugal compressor under variable working condition of engine
Tianyou Wang, Tianjin (CN); Lei Shi, Tianjin (CN); Zhen Lu, Tianjin (CN); and Kai Sun, Tianjin (CN)
Assigned to Tianjin University, Tianjin (CN)
Filed by Tianjin University, Tianjin (CN)
Filed on Aug. 30, 2024, as Appl. No. 18/821,091.
Application 18/821,091 is a continuation of application No. PCT/CN2023/081341, filed on Mar. 14, 2023.
Prior Publication US 2024/0418175 A1, Dec. 19, 2024
Int. Cl. F04D 27/00 (2006.01)
CPC F04D 27/001 (2013.01) 2 Claims
OG exemplary drawing
 
1. A performance test bench device for a centrifugal compressor under a variable working condition of an engine, comprising: an inlet pipeline, a flow meter, an air inlet rectification system, the centrifugal compressor, an outlet pipeline, an exhaust valve, a gearbox, an encoder, a rotating speed feedback control system, a frequency converter, a speed regulator, a heat exchanger, a thermocouple array, a driver and an alternating current motor, wherein
the centrifugal compressor is sequentially arranged coaxially with a turbine back disk temperature simulator, the speed regulator and the driver, and a back plate and the heat exchanger are arranged at a front end of the turbine back disk temperature simulator;
the thermocouple array is arranged on a surface of the back plate, and the thermocouple array is composed of a plurality of pairs of thermocouples;
a total average temperature measurement probe is arranged at an inlet and an outlet of the centrifugal compressor;
the thermocouple array is arranged on a surface of a rotating blade of the centrifugal compressor, and when a test bench device works, an airflow sequentially passes through the inlet pipeline, the flow meter and the air inlet rectification system, is pressurized by the centrifugal compressor, and is then discharged by the outlet pipeline, and an outlet of the exhaust valve is connected to an air outlet end of the airflow;
the speed regulator is composed of the gearbox, the encoder and the rotating speed feedback control system;
the encoder and the rotating speed feedback control system are sequentially connected to a main shaft of the gearbox;
the driver is coaxially connected to the frequency converter and the alternating current motor in sequence; high-temperature circulating water is connected in the heat exchanger; and
a through hole is formed in a center of the turbine back disk temperature simulator, and a main shaft of the centrifugal compressor penetrates through the through hole.