Outlet gas energy distribution adjustable pulse detonation combustion chamber

Abstract

The invention discloses an outlet gas energy distribution adjustable pulse detonation combustion chamber. The outlet gas energy distribution adjustable pulse detonation combustion chamber comprises acombustion chamber gas inlet channel, a pulse detonation combustion chamber, a pulse detonation gas energy distribution adjusting device and a transition section which communicate in sequence, whereinan intake cone is mounted in the combustion chamber gas inlet channel; the intake cone is internally provided with an atomization air channel, a fuel channel and a conical swirl nozzle; the atomization air channel is connected with a high-pressure atomization air inlet pipe extending into the intake cone from the outside of the combustion chamber gas inlet channel; the fuel channel is connected with a fuel feed pipe extending into the intake cone from the outside of the combustion chamber gas inlet channel; the conical swirl nozzle is connected with the atomization air channel and the fuel channel; a pneumatic valve is mounted at the tail end of the intake cone; the pulse detonation combustion chamber is provided with a sparking plug mounting base; and a sparking plug is mounted on the sparking plug mounting base. Through the outlet gas energy distribution adjustable pulse detonation combustion chamber, the problems that the energy flux density of pulse detonation combustion high-temperature gas is centralized, the conversion and extraction efficiency of a turbine to detonation gas energy is low and the pressure of detonation combustion waves is transmitted reversely are solved.

Description

technical field [0001] The invention relates to a pulse detonation combustor capable of adjusting outlet gas energy distribution, which is suitable for gas turbine power generation and power equipment. Background technique [0002] Pulse detonation combustion chamber is a new type of combustion chamber based on detonation combustion. Compared with slow combustion combustion, detonation combustion has the advantages of self-pressurization, fast flame propagation speed, and low pollutant emission. The development of detonation combustion-based The powerplant is expected to improve the overall performance of existing powerplants. [0003] Existing power devices such as aero-engines and ground gas turbines generally adopt isobaric combustion chambers, and the combustion process in which fuel is injected into the combustion chambers keeps the gas pressure basically unchanged or slightly reduced. Due to the self-pressurization characteristics of detonation combustion, the gas pre...

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Problems solved by technology

[0005] In order to improve the cycle thermal efficiency of aero-engines or ground gas turbines based on pulse detonation combustion, solve the problems of concentrated energy flow density of high-temperature gas in pulse detonation combustion, low efficiency of energy conversion and extraction of detonation gas by turbines, and reverse transmission of detonation combustion wave pressure. The invention proposes a pulse detonation combustor with adjustable outlet gas energy distribution

At the same time, the invention proposes a pneumatic valve structure that can adaptively follow the change of the working frequency of the pulse detonation combustion chamber, and uses the pressure difference between the intake air and the detonation combustion wave to reverse the pressure difference to automatically open and close the pneumatic valve to solve the problem of detonation combustion. The problem that wave pressure reverse transmission affects the operation of compressor

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