Study on operation characteristics and structure optimization of backwater jet device for downcomer of hot water boiler

摘要

With the development of mechanics and automation, the compound circulation which is installed at the entrance of the boiler inlet pipe can greatly increase the circulating water velocity and reduce the subcooled boiling and oxygen corrosion of the boiler. But because of the complexity of the complex cycle and the difficulties in the test, many important laws can not be given. Through the computational fluid dynamics software (CFD), the numerical simulation of the working process of the jet device is carried out to improve the operating characteristics and optimize the structure of the jet device.