Aviation gas turbine lng/aviation kerosene dual fuel combustor

Abstract

An LNG and aviation kerosene dual fuel combustor of an aero-gas turbine comprises a combustion area which comprises a precombustion area and a main combustion area, the outer boundary of the combustion area is provided with an inner flame tube wall, the inner boundary of the combustion area is provided with an outer flame tube wall, the front of the combustion area is provided with a combustor head, and the combustor head is connected with the inner flame tube wall through a head end wall. The LNG and aviation kerosene dual fuel combustor of the aero-gas turbine has the advantages that a center staged combustion concept is adopted, two kinds of fuel can be applied simultaneously, a precombustion level which adopts gas fuel provides a stable ignition source and reduces pollutant emissions, low pollution combustion is achieved through a main combustion level, pollutant emission is reduced, and the stability of the aero-gas turbine combustor can be guaranteed simultaneously; a double-ring cavity combustor structure is adopted, air used for combustion is all fed from the head, a flame tube is only provided with a dilution hole and a necessary cooling hole, the modularization feature is achieved, the combustion structure is simplified, and a premixed pre-evaporation loop structure is simpler and easy to process.

Description

technical field [0001] The invention relates to an aviation gas turbine combustor, in particular to an aviation gas turbine combustor capable of using LNG / aviation kerosene dual fuel. Background technique [0002] With the rapid development of the global military aviation and civil aviation industry, countries such as Europe and the United States realized their excessive dependence on petroleum-based aviation fuel at the beginning of this century, leaving serious hidden dangers to national defense and economic security. At the same time, global climate change has also put forward new requirements for the aviation transportation industry. In order to meet the requirements of more economical and more environmentally friendly aviation gas turbines for aircraft in the future, major aviation industry countries have focused on the environmental pollution caused by aviation gas turbines. Research on aviation gas turbines The control of pollutants has been extensively studied as a k...

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Problems solved by technology

GE has developed a variety of fuel nozzles using premixed pre-evaporation methods, and has applied for a number of US patents: 0178732, 6354072, 6363726, 6381964, 6389815, 6418726 and 6453660, etc. Low emissions from the combustion chamber are achieved by reducing the fuel-air ratio in the main combustion zone, without involving the use of dual fuels

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