汽轮机热力性能试验技术培训课件

1、TPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI标准美国ASMEPTC6国际电工委员会IEC A，B国标GB8117-2008精度精度最高的试验用最好的仪表HR不确定度全面性试验0.25%(湿蒸汽0.37%)简化试验0.34%(湿蒸汽各高加的抽汽量；除氧器热平衡-除氧器的抽汽量，给水流量；求解联立方程，一般采用迭代法求解。TPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI试试PW试试PW试试PWWP11试试PWWP1111PPP试TPRITPRIsttstsVPVPWWTPRITPRITPRITPRI

2、TPRITPRITPRITPRITPRITPRITPRITPRIP1501 . 0P15006. 0TPRITPRI)(2400.log0fpsigPMWBFTPRITPRITPRITPRI时间实测热耗上升用ASME方法用IEC方法月%70.6040.2620.455100.7050.3280.585140.8100.4260.859260.8940.6361.330以福州电厂三菱公司350MW机为例 TPRITPRITPRITPRITPRITPRI参数对热耗率不确定度的影响各参数测量不确定度热耗率分不确定度UHRi(%)热耗率分不确定度UHRi的平方仪表系统不确定度UI()时间变化性不确定度

3、Ut()空间变化性不确定度Us()总不确定度UT单位p主汽压力0.065 %/%0.0840.0560.101%0.0074.25E-05t主汽温度0.155 %/0.3540.1260.3750.0583.39E-03p冷再热压力0.033 %/%0.0920.0680.115%0.0041.44E-05t冷再热温度0.094 %/0.3540.0960.3660.0341.17E-03p热再热压力0.050 %/%0.0910.0710.115%0.0063.27E-05t热再热温度0.105 %/0.3540.1630.3890.0411.68E-03t最终给水温度0.073 %/0.3

4、540.0280.3550.0266.79E-04t最后一级加热器进水温度0.020 %/0.3540.0270.3550.0074.81E-05t给水泵出水温度0.083 %/0.3540.0280.3550.0308.72E-04t除氧器出水温度0.125 %/0.3540.0250.3540.0441.98E-03t主凝水温度0.212 %/0.3540.0260.3540.0755.66E-03w主凝水流量1.072 %/%0.2680.1320.299%0.3201.03E-01w汽动泵耗汽量0.035 %/%0.6930.1270.705%0.0256.01E-04w减温水流量0.

5、019 %/t/h0.2860.7180.773t/h0.0142.06E-04p排汽压力0.089 %/%0.0910.0241.7121.712%0.1522.32E-02第一类修正1.000 %/%0.0300.0000.030%0.0309.00E-04w系统隔离1.000 %/%0.0130.0000.013%0.0131.65E-04P发电机出力1.000 %/%0.2240.0540.230%0.2305.30E-021.96E-01热耗率测量总不确定度(%)0.443TPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI

6、TPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI)()()()()()(tttttPTGPOHFLHVQFGPTGHRTPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI机组类型H与HR变化关系I与HR变化关系L与HR变化关系国产125MW0.16500.35930.3148国产200MW0.17690.35200.3081国产300MW0.16710.36440.2747国产200MW东汽0.20010.27230.3811国产200MW哈汽0.20230.26900.3784国产30

7、0MW0.16870.30490.2789引进型300MW0.20650.29950.5016引进型平圩600MW0.20650.28800.4840引进型哈三600MW0.20510.28740.4492引进型吴泾600MW0.20510.28140.4492由小偏差法计算得出，或是由制造厂提供TPRITPRI机组类型门杆和轴封漏量对热耗的影响%一段轴封占门杆轴封总影响中的分额%至中压缸漏汽量对热耗率的影响%国产200MW0.7449/引进型300MW0.45570.46引进型600MW0.42470.40GE 350MW0.30480.34对实际运行机组的实测表明，轴封漏量都比设计值大0.

8、61.0倍经验证明大修中将轴封间隙调整到设计值，或采用新型汽封减少轴封漏量是提高机组经济性的有效手段。TPRITPRI名称 给水端差H kJ/kgQ kJ/kg %1#GJ10 kJ/kg原设计基础上增加10 kJ/kg+5.0967+12.2718-0.04362#GJ10 kJ/kg-0.2763+0.1374-0.02833#GJ10 kJ/kg-1.2341-2.0324-0.02535#DJ10 kJ/kg-0.4422-0.0376#DJ10 kJ/kg-0.4108-0.0347#DJ10 kJ/kg-0.2731-0.0238#DJ10 kJ/kg-0.3364-0.028采用

9、等效焓降法TPRITPRI名称抽汽压损 kJ/kgr kJ/kgH kJ/kgQ kJ/kg %1#GJ4%原设计基础上增加4%13.313.76.807216.5448-0.0642#GJ4%1211.1-0.92810.5706-0.02953#GJ4%10.49.21-1.4663-2.2056-0.0266除氧器4%7.80-0.3254-0.0275#DJ4%6.46.6-0.2689-0.0226#DJ4%5.48.0-0.2260-0.0197#DJ4%4.84.7-0.1534-0.0138#DJ4%4.33.6-0.1369-0.011TPRITPRI名称 r 疏水端差H k

10、J/kgQ kJ/kg %1#GJ10 kJ/kg原设计基础上增加10 kJ/kg-0.021720.00912-0.00222#GJ10 kJ/kg-0.22143-0.3691-0.00463#GJ10 kJ/kg-0.10298-0.00865#DJ10 kJ/kg-0.02318-0.00196#DJ10 kJ/kg-0.02849-0.00247#DJ10 kJ/kg-0.04622-0.00398#DJ10 kJ/kg-0.07843-0.0065TPRITPRI名称H kJ/kgQ kJ/kg %过热器减温水2.070595.3549-0.0332再热器减温水-1.67641.6

11、080-0.20016小汽机用汽量-7.84-0.65216给水大旁路2.070595.3549-0.0332锅炉排污及补水-3.18794.8358-0.44913 1%补水率和锅炉排污率使热耗率增加35kJ/kWh，l%再热减温水使热耗率增大约15 kJ/kWh。因此，在保证锅炉安全运行的前题下，应尽量少喷再热减温水。 TPRITPRI名称H kJ/kgQ kJ/kg %高旁漏至冷再热-3.47-3.747-0.1672低旁漏至凝汽器-11.9-0.9940主汽漏至凝汽器-15.656-5.166-1.11冷再热漏至凝汽器-11.909-5.166-0.795热再热漏至凝汽器-11.909-0.9933#GJ危急疏水漏至凝汽器-1.1451-0.09472#GJ危急疏水漏至凝汽器-1.5647-0.12951#GJ危急疏水漏至凝汽器-2.4962-0.4652-0.1889除氧器放水漏至凝汽器-0.6014-0.04975#DJ事故疏水漏至凝汽器-0.3437-0.02846#DJ事故疏水漏至凝汽器-0.2056-0.01707#DJ事故疏水漏至凝汽器-0.0944-0.00781抽管道疏水漏至凝