A plasma spray combustion device with electrode cooling function
A plasma and spray combustion technology, applied in jet propulsion devices, ramjet engines, machines/engines, etc., can solve problems such as non-starting, co-combustion equivalent ratio pressure exceeding the limit, and interference with the intake port, etc., to achieve extended use The effect of life and atomization enhancement on ignition enhancement
Active Publication Date: 2019-12-31
HUNAN AIRTOPS INTELLIGENT TECH CO LTD
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Problems solved by technology
The guided ignition method involves the ignition relay of two physical fuels in the combustion chamber. If the co-ignition equivalence ratio is too large, the pressure of the ignition process will easily exceed the limit, resulting in interference with the intake port and causing it to fail to start.
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[0027] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0028] The invention provides a plasma spray combustion device with electrode cooling function, such as figure 1 and figure 2 As shown, it includes a housing 2, one end of the housing 2 is a nozzle provided with a first spray hole 10, and the inside of the housing 2 is provided with a first cavity 3 communicating with the first spray hole 10;
[0029] A cathode 13 and an anode 5 are provided in the first cavity 3, and one end of the cathode 13 is a cathode nozzle provided with a second nozzle hole 9, and the cathode nozzle is located in the first nozzle hole 10, and the cathode nozzle is arranged in the first nozzle hole 10. 13 is provided with a second cavit...
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The invention belongs to the field of ignition and combustion of a combustion chamber of a scramjet engine and discloses a plasma spraying combustion device with an electrode cooling function. The plasma spraying combustion device with the electrode cooling function comprises a shell, and one end of the shell is provided with a spray nozzle with a first spraying hole; a first cavity communicatingwith the first spraying hole is formed in the shell, and is internally provided with a cathode and an anode; one end of the cathode is provided with a cathode spray nozzle provided with a second spraying hole; the cathode spraying nozzle is located in the first spraying hole; a second cavity communicating with the second spraying hole is formed in the cathode; one end of the anode stretches into the second cavity, and a discharging gap is formed between the anode and the inner wall of the second cavity; and the shell is provided with a working gas channel and a liquid state fuel channel, and the first cavity is provided with a rotational flow gas inlet and a rotational flow liquid inlet. The plasma spraying combustion device with the electrode cooling function integrates the functions of bubble jetting spraying and plasma high-energy ignition, and can achieve atomization enhancing and ignition intensifying of spraying fuel in supersonic airflow; and the liquid state fuel can perform cooling protection on a discharging electrode, and the service life of the electrode is prolonged.
Description
technical field [0001] The invention belongs to the field of ignition and combustion of a scramjet combustion chamber, and in particular relates to a plasma spray combustion device with an electrode cooling function. Background technique [0002] Spray combustion involves processes such as droplet breakup, evaporation, and mixing, and the increased time scale and space scale are far more complicated than gaseous fuel combustion. For a scramjet engine using liquid hydrocarbon fuel, its combustion process needs to go through processes such as liquid fuel injection, atomization, evaporation, and ignition. Under the low total temperature start-up condition, due to the low static temperature and back pressure, the atomization and evaporation process of the spray fuel is insufficient, so that the ignition energy demand is huge, and it is difficult to ensure reliable ignition. At present, for the ignition of liquid fuel in supersonic airflow, there are mainly two technical ways to...
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IPC IPC(8): F02K7/10F02K1/82F02K1/36
CPCF02K1/36F02K1/82F02K7/10
Inventor 罗世彬
Owner HUNAN AIRTOPS INTELLIGENT TECH CO LTD