Atomizer, combustion device including atomizer, and gas turbine plant

Abstract

The invention provides an atomizer capable of promoting microparticulation of a spray fluid and inhibiting abrasion caused by a solid component of the spray fluid and a combustion device including the atomizer. The atomizer includes a mixing chamber (27), spray fluid flow passages (23, 24) supplying a spray fluid (11) to the mixing chamber (27), a spray medium flow passage (29, 30) supplying a spray medium (12) to the mixing chamber, outlet holes (41) spraying a fluid mixture (13) of the spray fluid and the spray medium, and fluid mixture flow passages (31, 32) connecting the mixing chamber (27) and the outlet holes (41) to each other. The fluid mixture flowing through each of the fluid mixture flow passages joins with each other at a joining section (35) and is sprayed from the outlet hole. The mixing chamber (27) includes a middle ejection hole (26) spraying the spray fluid to the mixing chamber. The middle ejection hole is arranged at a joining section of the spray fluid flow passages. The spray fluid flowing through the spray fluid flow passages joins with each other at the joining section and is sprayed from the middle ejection hole.

Description

technical field [0001] The present invention relates to a spray nozzle and a combustion device equipped with the spray nozzle, and more particularly, to a two-fluid spray type spray nozzle for atomizing liquid fuel (spray fluid) using gas (spray medium), and a combustion device provided with the spray nozzle. Background technique [0002] In combustion devices such as gas turbine combustors, both diversification of fuels that can handle various fuels and improvement of environmental performance are required. [0003] With regard to diversification of fuels, some gas turbines use so-called dual-fuel burners that use liquid fuels such as light oil or A-heavy oil in addition to fuel gas represented by natural gas, depending on the fuel supply status. . In this combustor, both gaseous fuel and liquid fuel can be used, so even if the fuel supply situation changes, the operation can be continued. [0004] Compared with the improvement of the environmental performance of the gas ...

AI Technical Summary

Problems solved by technology

However, since the mixed fluid flows at a high speed, the mixing time in the flow channel is shortened, and there is a common problem that the mixing cannot be performed sufficiently.

In addition, in the mixing part, since the flow path of the spray fluid connected to the upstream side intersects the flow path of the spray medium, the wall surface is easily worn due to the collision of the solid content in the spray fluid with the wall surface of the internal mixing chamber. subject

Images