CAJ | 학술논문

通过一维计算和准三维计算，对地面重型F级中低热值燃气轮机透平进行了方案设计与优化。由一维优化结果指导准三维计算，并对结果进行优化。计算结果表明，通过一维优化计算，效率提高0．8％，末级更接近轴向出气，在第2、3级静叶流道存在跨声速流动；准三维计算结果中，由于第1级冷却空气量较大，冷却空气掺混损失在总损失中占有较大比例，二次流损失是影响总损失沿叶高分布的重要因素；准三维优化使损失降低，在第3级静叶中，损失较优化前大幅度降低。参考一般F级的透平气动设计的经验，讨论燃气轮机方案设计，探讨如何选择确定一维参数、准三维参数，并进行优化，从而为燃气轮机的透平部分的工程设计提供参考。
통과일유계산화준삼유계산，대지면중형F급중저열치연기륜궤투평진행료방안설계여우화。유일유우화결과지도준삼유계산，병대결과진행우화。계산결과표명，통과일유우화계산，효솔제고0．8％，말급경접근축향출기，재제2、3급정협류도존재과성속류동；준삼유계산결과중，유우제1급냉각공기량교대，냉각공기참혼손실재총손실중점유교대비례，이차류손실시영향총손실연협고분포적중요인소；준삼유우화사손실강저，재제3급정협중，손실교우화전대폭도강저。삼고일반F급적투평기동설계적경험，토론연기륜궤방안설계，탐토여하선택학정일유삼수、준삼유삼수，병진행우화，종이위연기륜궤적투평부분적공정설계제공삼고。
The turbine of heavy duty gas turbine was studied by one-dimensional and quasi three-dimensional method, including mode design and optimization. The quasi three-dimensional calculation was based on the result of the one-dimensional optimization, and the quasi three-dimensional result was optimized. The result shows that the efficiency increases 0.8% by the one-dimensional optimization, and the outlet flow angle is close to 90 degree. There is transonic flow in the flow path of the second and third stator. In the quasi three-dimensional calculation, the cool air mix loss takes an important part in the total loss, due to the large quantity of cool air in the first stage. The secondary loss is a great factor to impact the loss distribution along blade height. The loss is decreased by the quasi three-dimensional optimization, especially in the third stator. The purpose of this study, refer to the general F-class turbine aerodynamic design experience, to discuss gas turbine design on how to choose one dimensional, quasi three-dimensional parameters, so as to provide cascade reference to the engineering design.