Combustion device and measurement system for realizing multi-point spontaneous combustion in space

Abstract

A combustion device and a measurement system for realizing multi-point spontaneous combustion in space, wherein the combustion device for realizing multi-point auto-ignition in space comprises: a combustion chamber, and a combustion channel is arranged inside the combustion chamber; a baffle plate, the baffle plate along the combustion channel A plurality of inner cavities are arranged at intervals in the extending direction; wherein, the inner cavities are communicated with the combustion passage, so as to obtain a plurality of restricted spaces in the combustion passage. The invention designs a plurality of internal cavities composed of baffles as a limited space, which can quickly realize the simultaneous formation of multiple hot spots of the flame and the process of deflagration to detonation, which is beneficial to simulate and analyze the limited space of large gas turbines and aero-engines For the flame acceleration and detonation process, it provides theoretical support for the combustion process analysis and structural optimization design of the combustion power plant.

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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