空气分配对双旋流燃烧室性能影响的试验研究

Experimental Investigation of Effects of Airflow Distribution on Double Swirler Combustor Performance

关键词:  燃烧室  双旋流  空气分配  温度分布  总压恢复系数

Key words:  Combustor  Double swirler  Airflow distribution  Temperature distribution  Total pressure recovery coefficient

摘要:

为了研究燃气轮机燃烧室主燃区和掺混区空气分配比例对燃烧室性能的影响，本文在双旋流环形燃烧室上进行了全温全压燃烧试验研究。结果表明，随运行工况的提高，燃烧室出口温度分布系数OTDF呈现总体降低的变化趋势，出口径向温度分布系数RTDF呈现先显著降低、后缓慢升高并最终平稳的变化趋势，总压恢复系数略有增加；随着主燃区空气比例的增加，OTDF呈现先增加再降低再增加的变化趋势，并在主燃区空气比例为0.343时达到最小值；随掺混区空气比例的增加，燃烧室RTDF持续降低；主燃区和掺混区的进气比例对燃烧室的总压恢复系数几乎没有影响。

Abstract:

In order to investigate the effects of airflow distribution ratio of gas turbine combustor primary zone and dilution zone on combustor performance， an experimental study was conducted on a double swirler annular combustor under actual temperature and pressure condition. The results show that with increment of operation load， combustor outlet temperature distribution factor decreases mostly， radial temperature distribution factor decreases significantly first and then increases slowly and remains stable at last， and total pressure recovery coefficient increases slightly. With increment of airflow ratio of primary zone， outlet temperature distribution factor increases first and then decreases and increases once again， and reaches the minimum value when the airflow ratio of primary zone is 0.343. With increment of airflow ratio of dilution zone， combustor radial temperature distribution factor decreases. Total pressure recovery coefficient keeps stable with change of airflow distribution ratio of primary zone and dilution zone.