Combustion device for realizing space multipoint spontaneous combustion and measurement system

Abstract

The invention relates to a combustion device for realizing space multipoint spontaneous combustion and a measurement system. The combustion device for realizing space multipoint spontaneous combustioncomprises a combustion chamber and baffles, wherein a combustion channel is arranged in the combustion chamber; and a plurality of inner cavities are arranged at intervals in the extending directionof the combustion channel by the baffles, and the internal cavity is communicated with the combustion channel and is used for obtaining a plurality of limited spaces in the combustion channel. A plurality of internal cavities composed of baffles are designed as limited spaces, the device can quickly achieve the simultaneous formation of a plurality of hot spots of flame and the process of converting combustion into detonation, facilitates the simulation and analysis of the flame acceleration and detonation process in the limited space of a large gas turbine and an aero-engine, and provides theoretical support for the combustion process analysis and structural optimization design of a combustion power device.

Description

technical field [0001] The invention relates to the field of combustion technology, in particular to a combustion device and a measurement system for realizing multi-point spontaneous combustion in space. Background technique [0002] In large gas turbines and aero-engines, due to the limited space of the combustion chamber and the influence of its internal complex structure, the flame propagation process is strongly disturbed by the wall surface, which intensifies the rebound and superposition process of the pressure wave, and easily causes the mixture to spontaneously ignite and The occurrence of strong turbulent combustion will further produce detonation phenomenon. The hot spot spontaneous combustion and detonation waves formed in this process will rapidly increase the propagation speed of the flame on the one hand, and on the other hand will also bring challenges to the engine structure. Therefore, it is necessary to explore the influence mechanism of complex wall struc...

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Problems solved by technology

However, the arrangement of the vertical baffles requires a long flame propagation pipe in the actual experimental operation to accelerate the flame step by step to form a detonation phenomenon, and often only a hot spot spontaneous combustion phenomenon at a certain point in the combustion chamber can be observed in the experiment , can not truly reflect the process of multi-point spontaneous combustion and flame acceleration in the actual engine

[0004] At this stage, due to the complexity of the spontaneous combustion and detonation reaction process of the flame in the actual combustion power plant, it is difficult to perform direct visual measurement. Therefore, it is necessary to design a simple multi-point spontaneous combustion measurement platform in a confined space.

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