喷嘴特性对双旋流燃烧室出口温度分布影响的实验研究

Experimental Study on Effects of Nozzle Characteristics on Outlet Temperature Distribution of Double Swirl Combustor

关键词:  双旋流燃烧室  高温高压  全环试验  燃油流量分布  出口温度分布  喷嘴径向位置

Key words:  Double swirl combustor  High temperature and pressure  Full ring test  Fuel flow distribution  Outlet temperature distribution  Nozzle radial position

摘要:

本文以双旋流全环燃烧室为试验对象，在高温高压试验条件下，通过调整全环燃油喷嘴的流量离散度和径向位置来研究其对出口温度分布的影响。试验结果表明，当喷嘴燃油流量离散度控制在±4%以内时，采用简单的大、小流量喷嘴间隔搭配的方案即可保证出口温度分布的均匀性；当燃油流量离散度放大到4%~8%时，采用本实验研究的搭配方案仍可保证出口温度分布的均匀性；当燃油流量离散度放大到10%时，通过调整喷嘴搭配方案已经无法保证出口温度分布均匀性。燃油喷嘴径向位置较火焰筒头部中心线偏离旋流杯腔道高度的11.5%以内时，不影响出口温度分布的均匀性。

Abstract:

Using the double swirl full annual combustor as the test object， under the condition of high temperature and pressure test，the effects on the double swirl full annual combustor outlet temperature distribution quality were evaluated by adjusting the fuel flow dispersion and radial position.The test results show that when the fuel flow dispersion of the nozzle is controlled within ±4%，the outlet temperature distribution can be ensured by using the alternative matching scheme of simple large and small flow nozzle positions.When the dispersion is amplified within 4%~8%，the distribution can still be ensured by using the location scheme of experimental research.When the dispersion is amplified to 10%，the distribution cannot be guaranteed by adjusting the nozzle position.When the radial position of the fuel nozzle deviates from the center line of dome by less than 11.5% from the height of the swirl cup cavity，the outlet temperature distribution quality would not be affected.