An aircraft engine compartment simulation device for fire extinguishing agent concentration measurement experiments

Abstract

The invention discloses an airplane engine compartment simulating device for a fire extinguishing agent concentration measuring experiment. An experiment environment similar to an actual application scene can be provided for a gas fire extinguishing agent concentration measuring device. The simulating device comprises a fire extinguishing agent releasing section, a middle measuring section, a windpower generating section and a tail gas exhaust section in sequence, wherein the fire extinguishing agent releasing section is provided with a honeycomb plate and a damping net, an adjustable opticalchannel and a sampling hole are formed in the middle measuring section for concentration measurement, a turbofan and a controller are arranged on the wind power generating section, the tail gas exhaust section is connected with the wind power generating section through a flange, and an exhaust pipeline extends out of a window and then extends downwards so that outdoor rainwater can be prevented from being poured into the device. By means of the airplane engine compartment simulating device, the fire extinguishing agent after-releasing flow field environment and concentration distribution in an airplane engine compartment can be simulated, and the simulating measuring environment is provided for the developing, performance testing and improving of the fire extinguishing agent concentrationmeasuring device.

Description

technical field [0001] The invention relates to an aircraft engine compartment simulation device, in particular to an aircraft engine compartment simulation device used for fire extinguishing agent concentration measurement experiments. Background technique [0002] Aircraft engine compartments have a relatively high level of fire risk due to the presence of a large amount of fuel and other flammable materials. In order to ensure flight safety, the fire extinguishing system in the aircraft engine compartment needs to pass relevant ground verification tests, the most important measure of which is the concentration distribution of the fire extinguishing agent after it is released. [0003] At present, the research and development of tunable laser spectrum fire extinguishing agent concentration measurement equipment is still in the laboratory stage, and a closed-circuit absorption gas chamber is used for calibration and testing. However, the air flow velocity in the real aircr...

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Problems solved by technology

However, the real engine compartment is large in size and complex in internal structure, and each experiment consumes a large amount of fire extinguishing agent. It is expensive to conduct experiments in it, and it is not feasible

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