Dielectric barrier discharge experiment platform capable of realizing transient and steady state measurement

Abstract

The invention discloses a dielectric barrier discharge experiment platform capable of realizing transient and steady-state measurement. The dielectric barrier discharge experiment platform comprises a power supply system, an air inlet system, a reactor, a transient measurement system, a steady-state measurement system and an exhaust system, the power supply system adopts a high-voltage nanosecond pulse power supply and has two discharge modes, namely a pulse string discharge mode and a continuous discharge mode; the gas inlet system is used for providing atmosphere gas and reaction gas, and the atmosphere gas and the reaction gas are introduced into the reactor through an atmosphere gas inlet and a reaction gas inlet in the reactor; the reactor comprises a reactor front end, a reactor main body and a reactor tail end which are connected in sequence; the transient measurement system is used for measuring single or multiple absorption lines of molecules so as to obtain component concentration and temperature information in a reaction area; the steady-state measurement system is used for providing data supplement for components which are not detected by the laser system, or comparing and verifying transient measurement results; and the exhaust system is used for continuously extracting the reacted reaction gas and atmosphere gas to realize an exhaust function.

Description

technical field [0001] The invention belongs to the technical field of novel combustion control, and in particular relates to a dielectric barrier discharge experimental platform capable of realizing transient and steady-state measurements. Background technique [0002] The problem of global energy supply is becoming more and more serious, and the combustion of fossil fuels has brought about a series of environmental problems. Effectively improving the utilization rate of fuel, improving the efficiency of combustion equipment, and reducing pollutant emissions are crucial to energy security and are the key to sustainable development. only way. [0003] In recent years, researchers have continuously proposed new combustion control technologies, such as changing the ignition mode, designing the flow field shape of the combustion chamber, and controlling the fuel concentration distribution. Among the many ignition and combustion technologies, plasma has shown great application ...

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Problems solved by technology

[0004] At present, the work of researchers is generally based on the coaxial cylindrical dielectric barrier discharge plasma generation device. However, due to the effect of gravity, the slender electrode in the center of the device tends to bend downward, and the coaxiality with the outer electrode cannot be guaranteed. , the change of the discharge gap leads to the inability to generate a uniform plasma, and the composition data error caused by fuel pyrolysis / oxidation is also large

At the same time, in-situ measurement and transient diagnosis of non-equilibrium discharge plasma-assisted combustion are difficult in special environments. Therefore, scholars generally use quartz glass tubes or other gas-collecting devices to sample, and then pass the gas into a gas chromatograph for detection. device for analysis

These methods are all off-site measurement, the measurement system is very expensive and complex in structure, the detection time is long, and it is impossible to simultaneously obtain the component concentration and temperature transient measurement results when the fuel is affected by the plasma

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