4.2.1.3 计算汽轮机各段抽汽量Dj和凝汽流量Dc 1） 由高压加热器GJ1热平衡计算Dl
D1?Dfw(hw1?hw2)??hh1?hw1Dfw(hw1?hw2)??hh1?hw1??
?
(1.0202D0?33.46?103)(1143.5?1047.07)?0.999?
3151.80?1047.07?0.06153D0?2.0432?103
2） 由高压加热器GJ2热平衡计算D2
D2???Dfw(hw2?hw3)??h?D1(hw?h1w2)h2?hw2?
(1.0202D0?33.46?103)(1047?837.40)?0.999?3069.3?864.82
3(0.06153D0?2.0432?10)?214.2?3069.3?864.82?0.0942D0?3.0652?103
GJ2的疏水Ds2
Ds2?D1?D2
?0.06153D0?2.0438?103?0.0942D0?3.0652?103 ?0.15576D0?5.1084?103
3） 再热蒸汽量Drh
由于高压缸轴封漏出
HD?sg中，在Dsg1返回高压缸排汽进入中压缸夹
层，故从高压缸物质平衡可得：
HDrh?D0??Dsg?D1?D2?Dsg1?Dzp
?D0?21.03?103?0.15763D0?5.2042?103?7.39?103?Dzp ?0.84231D0?8.4307?103?Dzp
4） 由高压加热器GJ3热平衡计算D3
pupuh?h??h给水泵出口水焓：w4w4w
＝697.17+25.56 ＝722.73 KJ/Kg
D3?pu???Dfw(hw3?hw)???D(h?h)?D(h?h4hs2w2w3sg2sg2w3)h3?h?w3
(1.0202D0?33.46?103)(837.4?722.73)?0.999?3330.25?748.06(0.15763D0?5.2042?103)(862.2?751.8)?7.8?103?(3339?751.8)?3330.25?748.06
?0.0243D0?8.6423?103
GJ3疏水Ds3
Ds3?Ds2?D3?Dsg2
?0.15576D0?5.1084?103?0.0243D0 ?8.6423?103?7.8?103?0.18193D0?6.0624?103
5） 除氧器的计算
除氧器出口水量（给水泵出口水量）Dfw
D'fw?Dfw?Dd
'?1.0202D0?33.46?103?33.46?103?DZP
?1.0202D0?DZP
'除氧器抽汽量D4
'D4??D'fw(hw4?hw5)??h?Ds3(hw3?hw5)h4?hw5h4?hw5?Df(h\f?hw5)?Dsg3(hsg3?hw5)
?(1.0202D0?Dzp)(697.17?627.0)?0.9993151.62?627.0(0.18401D0?6.0573?103)(748.06?627.0) ?3151.62?627.00.0053D0(2772.1?665.2)?4.42?103(3070?627.0)?3151.62?627.0?0.0165D0?4.0572?103?0.0469Dzp 第四级抽汽量D4
'D4?D4?Dt
?0.0165D0?4.0572?103?0.0469Dzp?72.05?103 ?0.0165D0?67.9928?103?0.0469Dzp 除氧器进水量Dc4
'Dc4?D'fw?Ds3?Df?Dsg3?D4
?1.0202D0?Dzp?(0.18401D0?6.0573?103)?0.0053D0?4.42?10?(0.0165D0?4.0572?10?0.0469Dzp)33
?0.81672D0?5.6723?103?0.9531Dzp
6） 由低压加热器DJ4热平衡计算D5
D5?Dc4(hw5?hw6)??hh5?h??w5
(0.81672D0?5.6723?103?0.9531Dzp)(627.0?533.72)?0.9993048.48?626.17
?0.0452D0?0.3132?103?0.0340Dzp
7） 由低压加热器DJ3热平衡计算D6
D6???Dc4(hw6?hw7)??h?D5(hw5?hw6)?h6?hw6
??(0.81672D0?5.6723?103?0.9531Dzp)(533.72?375.66)?0.9992931.44?538.18(0.0452D0?0.3132?103?0.0340Dzp)(626.17?538.18)2931.44?538.18
?0.0320D0?0.2023?103?0.0345Dzp
DJ3的的疏水Ds6
Ds6?D5?D6
?0.0452D0?0.3132?103?0.0340Dzp?0.0320D0?0.2023?103?0.0345Dzp ?0.0784D0?0.5155?10?0.0685Dzp
38） 由低压加热器DJ2热平衡计算D7
D7???Dc4(hw7?hw8)??h?Ds6(hw?h6w7)h7?hw7?
??(0.82913D0?5.7151?103?0.80171Dzp)(375.66?222.04)?0.9992725.65?387.034(0.0784D0?0.5155?103?0.0685Dzp)(457.8?315.4)2725.65?387.034
?0.0311D0?0.2164?103?0.03214Dzp
DJ2的疏水量Ds7
Ds7?Ds6?D7
?0.0784D0?0.5155?103?0.0685Dzp?0.0311D0?0.2164?103?0.03214Dzp?0.1095D0?0.7319?103?0.10064Dzp