一种多级轴流涡轮变工况特性的仿真研究.pdfVIP

23 11 2006 11 : 1006 - 9348( 2006) 11- 0328- 04 李 军 ( , 200030) : , , , , , , : ; ; ; ; : TK402 : A Sim ulation of Turbine Characteristic Aparting from Design Point L I Jun ( School ofM ech n ic l nd Pow er Engineering, Sh ngh i Ji otongUn ivers ity, Sh ngh i200030, Ch in ) ABSTRACT: By n lyzing the turb ine s off des ign beh vior, p rticu l rly p rt from the des ign beh vior, the ch n ging regul rity of off design power, efficiency, flux, pressure r tio, rot ting speed under the des igned turb ine set c n be pred icted, nd the over ll ch r cteristic before oper ting. It w ill provide the needed d t for the whole sy stem s beh vior c lcu l tion nd design of regu l tion nd control. Therefore, ccur tely predicting the set s ch r cteristic cu rve under the ltern tive beh vior, p rticu l rly p rting from the design beh vior, w ill be m ore mi port nt for the set s econom y nd m ob ility. The turb ine ch r cteristic curve c lcul tion dopts pneum tic function m ethod. A smi ple m odel p rting from the des ign point ofm ultist ge x i l flow turb ine s ch r cteristics cu rve is developed in th is p per, nd centr l d isgr m of mu ltilevel x i l turb ine p rt form design point is provided. It obt ins the efficiency ch r cteristics nd pressure r tio ch r cteristics from the c lcu l tion m ethod, then on th is b sis it n lyzes the collective influence of supercritic l nd rehe t f ctor on the x i l flux turbine beh vior p rting from the des ign point. KEYWORDS: Ap rt from; Des ign point; Turb ine; Ch r cteristic; S mi u l tion ,