Fuel spray auxiliary air feeder

Abstract

Abstract PURPOSE:To obtain a low cost emergency generator having reliable start of firing and good combustion by coupling a series car startor motor to a vane type fan while conducting to a fuel spray nozzle in a gas turbine combustion chamber. CONSTITUTION:Upon starting of a generator, a flow is produced in a combustor from an inlet 22 toward an outlet 26 while fuel is injected through a fuel spray nozzle 27 into primary combustion chamber 24 and fired continuously by means of a firing plug 33. Here a startor motor 37 is operated to feed the pressurized air from a fan 34 through an air supply tube 29 to said nozzle 27 to assist spraying of fuel and promote atomization. After reaching to steady state, said motor 37 is stopped to stop supply of auxiliary air. Consequently, the operating time of startor motor 37 is normally about 20sec and the motor 37 is never overheated.

Inventors

• 👤 Toraichi Suyama
• 👤 陶山　虎一

Bibliographic Details