A dual fuel nozzle with dual oil passages and single nozzle

Abstract

The object of the present invention is to provide a dual fuel nozzle with dual oil paths and single nozzles, which includes a nozzle housing, a main oil path swirl atomization assembly, an auxiliary oil path swirl atomization assembly, and a gaseous fuel nozzle; the main oil path swirl atomization assembly The atomization assembly includes the main oil circuit swirler, the main fuel flow channel, the main oil circuit pre-swirl chamber, the swirl chamber, and the fuel nozzle; the auxiliary oil circuit swirl atomization assembly includes the auxiliary oil circuit swirler, the auxiliary fuel flow channel , swirl chamber, and fuel nozzle; the invention can realize the undisturbed online switching of gaseous fuel and liquid fuel without stopping the machine; the design of double oil circuit ensures the good fuel atomization effect before the idle condition, and the idle condition In the future, the fuel injection flow rate can be greatly increased without greatly increasing the fuel supply pressure; the design of the anti-carbon deposition air cooling component and the common nozzle of the main and auxiliary oil circuits can effectively prevent carbon deposition at the nozzle; the structural design of the auxiliary fuel flow channel surrounding the main fuel flow channel is effective The problem of thermal coking of the residual oil in the main fuel flow channel is avoided.

Description

technical field [0001] The invention relates to a nozzle, in particular to a fuel nozzle of a gas turbine. Background technique [0002] As my country's demand for oil is increasing, my country's exploration and exploitation of marine crude oil is increasing. This puts forward higher and higher requirements for offshore oil extraction technology. In the process of crude oil extraction, a large amount of oil-associated gas is often obtained. At the beginning of exploitation, these oil-associated gases were directly burned as waste gas, which caused a lot of waste of resources. As a power equipment with small size and high power, the dual-fuel gas turbine can use conventional liquid fuel before the associated gas is extracted, and switch to gaseous fuel after the extraction is successful. waste of resources. Dual-fuel nozzle is the core component of dual-fuel gas turbine, and the performance of its components directly affects the performance of the whole machine. The most...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a seamless switch between gaseous and liquid fuels under any working conditions, and to achieve good atomization effect of liquid fuels under both low and high working conditions, which solves the problem of the previous dual oil circuit and double nozzle nozzles. A dual-fuel nozzle with dual oil circuits and single nozzles that is prone to carbon deposits at the nozzle of the main oil circuit

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