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ID:21105745
大小:178.00 KB
页数:4页
时间:2018-10-19
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1、基本数据汽轮机额定功率P0Kw50000汽轮机总进汽量D0t/h163.958汽轮机设计功率PeKw45000前轴封漏汽量△Dlt/h4.090汽轮机初压p0Mpa8.82阀杆漏汽量△Dvt/h1.300汽轮机初温t00C535冷却水温度tcl0C20汽轮机工作转速nr/min3000凝汽器蒸汽量Dct/h115.676汽轮机背压pcMpa0.005射汽抽汽器比焓降△hejKJ/kg558.3汽轮机给水温度tc0C220给水泵压头pfpMpa13.73凝结水泵压头pcpMpa1.33射汽抽汽器耗汽量△D
2、ejt/h1.200热平衡计算数据加热器H1H2HdH3H4H5Hej加热抽汽抽汽压力peMpa2.7101.4550.8380.2870.1040.030加热器工作压力pe'Mpa2.5481.3680.5880.2700.0980.028压力pe’下饱和水温te'0C2251941581309968压力pe’下饱和水比焓he'KJ/kg966.62825.42667.33546.38414.85284.64418.7抽汽比焓heKJ/kg3205306029452765262224622756.21
3、Kg蒸汽放热量he-he'KJ/kg2238.382234.582277.672218.622207.152177.322337.5凝结给水被加热给水量Gfwt/h165.33165.33140.51140.51140.51118.80118.80加热器端差0C550333加热器出口水温tw20C220189158127966535加热器进口水温tw10C18915812796653532.88出口水比焓hw2KJ/kg947.07809.09667.33534.33403.18273.16147.83
4、进口水比焓hw1KJ/kg809.09667.33534.33403.18273.16147.83137.78给水比焓升hw2-hw1KJ/kg137.98141.76133.00131.15130.02125.3310.05疏水(阀杆漏汽)使本级抽汽减少量△D't/h3.6361.31.2970.43计算抽汽量△De't/h10.410.75.28.4758.454.86实际抽汽量△Det/h10.47.0643.97.1788.024.861.200机组热经济指标机组内功率PiKw46945.8理想
5、比焓△himac'KJ/kg1403.94排气比焓hzKw2266.55有效比焓△himacKJ/kg1207.38等比熵排气比焓h2tKJ/kg2070.00汽轮机相对内效率ηri%86.0初比焓h0KJ/kg3473.94机械损失△PmKw469.458汽轮机轴端功率PaKw46476.35热耗率qKJ/(Kwh)9096.74发电机效率η%98绝对电效率ηelKJ/kg39.57机组电功率PeKw45546.82汽耗率dKg/(Kwh)3.6各压力级热力计算数据汇总表序号项目符号单位调节级第一压力
6、级第二压力级1蒸汽流量Gkg/s4544442喷嘴平均直径dnmm11009849883动叶平均直径dbmm11009859894级前压力P0Mpa8.825.284.705级前温度/干度t0/x0KJ/kg6级前比焓值h0KJ/kg3473.943373.943323.997圆周速度um/s172.8154.566155.1958级理想比焓降△htKJ/kg100.0049.9550.369理想出口速度Cam/s452.755316.086321.43110速度比Χa0.380.4890.48911平
7、均反动度Ωm%7.57.35812喷嘴型线13动叶型线14利用上级的余速动能△hc0KJ/kg2.5001.3015喷嘴理想比焓降△hnKJ/kg92.5046.2846.3316喷嘴滞止比焓降△hn*KJ/kg95.0046.2847.6317喷嘴出口的理想速度C1tm/s435.876304.237308.64318喷嘴的速度系数0.970.970.9719喷嘴出口实际速度C1m/s422.8295.110299.38320喷嘴损失△hnεKJ/kg5.472.742.8221喷嘴后压力P1Mpa6
8、.104.753.9022喷嘴后温度/干度(t1/χ1)23喷嘴出口比容V1tm3/kg0.05440.06710.079024喷嘴出口面积Ancm258.11100.00116.1125喷嘴出气角正弦sinα10.22500.19030.196926喷嘴出汽角α1º1310.9711.3527喷嘴节距tnmm45.78443.49543.49528喷嘴宽度Bnmm32323229喷嘴数目Zn26717130喷嘴出口高度lnmm221719
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