CAJ | 학술논문

汽轮机轴封漏汽量是影响机组热经济性的重要因素之一。基于传统轴封漏汽量计算公式经适当简化，得到了变工况下轴封漏汽量的两种简化计算方法，并以切除5号低加工况作为实例计算，与传统简化计算方法进行了分析比较。结果表明，两种新简化方法在温度变化较小时，所得变工况计算结果相近，且能反映轴封段段前压力变化引起的漏汽量变化，而传统简化方法不能够反映该变化趋势。
기륜궤축봉루기량시영향궤조열경제성적중요인소지일。기우전통축봉루기량계산공식경괄당간화，득도료변공황하축봉루기량적량충간화계산방법，병이절제5호저가공황작위실례계산，여전통간화계산방법진행료분석비교。결과표명，량충신간화방법재온도변화교소시，소득변공황계산결과상근，차능반영축봉단단전압력변화인기적루기량변화，이전통간화방법불능구반영해변화추세。
The gland leakage of steam turbine is one of the important factors influencing the thermal economy of unit .The traditional calculation formula for shaft gland steam leakage was simplified to two models at off -design condition .The new simplified calculation models were analyzed at NO .5 pressure heaters removal condition .Then the results were compared with the traditional simplified model .The results show that ,when the temperature change is small ,the calculation results of two new simplified models are similar at off-design condition.They can change with pressure variation of seal segment , which can not be reflected by the traditional simplified method .