VOLUTE DEVICE OF VARIABLE GEOMETRY PULSE GAS INLET TURBINE

摘要

A volute device of a variable geometry pulse gas inlet turbine comprises a volute (3). The volute (3) is provided with a gas inlet flow passage. One end of the gas inlet flow passage is provided with a gas inlet, and the other end is provided with a volute gas outlet. The gas inlet flow passage comprises two sets of working flow passages. The volute device has a low cost, a simple structure and high reliability, and has high efficiency in low speed conditions, and can improve the working capacity of the turbine, meet the flow capacity of an engine at medium or high speed, and avoid turbocharger overspeed.