汽輪機(jī)熱力性能試驗技術(shù)培訓(xùn)課件

1、TPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI標(biāo)準(zhǔn)美國ASMEPTC6國際電工委員會IEC A，B國標(biāo)GB8117-2008精度精度最高的試驗用最好的儀表HR不確定度全面性試驗0.25%(濕蒸汽0.37%)簡化試驗0.34%(濕蒸汽各高加的抽汽量；除氧器熱平衡-除氧器的抽汽量，給水流量；求解聯(lián)立方程，一般采用迭代法求解。TPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI試試PW試試PW試試PWWP11試試PWWP1111PPP試TPRITPRIsttstsVPVPWWTPRITPRITPRITPRI

2、TPRITPRITPRITPRITPRITPRITPRITPRIP1501 . 0P15006. 0TPRITPRI)(2400.log0fpsigPMWBFTPRITPRITPRITPRI時間實測熱耗上升用ASME方法用IEC方法月%70.6040.2620.455100.7050.3280.585140.8100.4260.859260.8940.6361.330以福州電廠三菱公司350MW機(jī)為例 TPRITPRITPRITPRITPRITPRI參數(shù)對熱耗率不確定度的影響各參數(shù)測量不確定度熱耗率分不確定度UHRi(%)熱耗率分不確定度UHRi的平方儀表系統(tǒng)不確定度UI()時間變化性不確定度

3、Ut()空間變化性不確定度Us()總不確定度UT單位p主汽壓力0.065 %/%0.0840.0560.101%0.0074.25E-05t主汽溫度0.155 %/0.3540.1260.3750.0583.39E-03p冷再熱壓力0.033 %/%0.0920.0680.115%0.0041.44E-05t冷再熱溫度0.094 %/0.3540.0960.3660.0341.17E-03p熱再熱壓力0.050 %/%0.0910.0710.115%0.0063.27E-05t熱再熱溫度0.105 %/0.3540.1630.3890.0411.68E-03t最終給水溫度0.073 %/0.3

4、540.0280.3550.0266.79E-04t最后一級加熱器進(jìn)水溫度0.020 %/0.3540.0270.3550.0074.81E-05t給水泵出水溫度0.083 %/0.3540.0280.3550.0308.72E-04t除氧器出水溫度0.125 %/0.3540.0250.3540.0441.98E-03t主凝水溫度0.212 %/0.3540.0260.3540.0755.66E-03w主凝水流量1.072 %/%0.2680.1320.299%0.3201.03E-01w汽動泵耗汽量0.035 %/%0.6930.1270.705%0.0256.01E-04w減溫水流量0.

5、019 %/t/h0.2860.7180.773t/h0.0142.06E-04p排汽壓力0.089 %/%0.0910.0241.7121.712%0.1522.32E-02第一類修正1.000 %/%0.0300.0000.030%0.0309.00E-04w系統(tǒng)隔離1.000 %/%0.0130.0000.013%0.0131.65E-04P發(fā)電機(jī)出力1.000 %/%0.2240.0540.230%0.2305.30E-021.96E-01熱耗率測量總不確定度(%)0.443TPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI

6、TPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI)()()()()()(tttttPTGPOHFLHVQFGPTGHRTPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRITPRI機(jī)組類型H與HR變化關(guān)系I與HR變化關(guān)系L與HR變化關(guān)系國產(chǎn)125MW0.16500.35930.3148國產(chǎn)200MW0.17690.35200.3081國產(chǎn)300MW0.16710.36440.2747國產(chǎn)200MW東汽0.20010.27230.3811國產(chǎn)200MW哈汽0.20230.26900.3784國產(chǎn)30

7、0MW0.16870.30490.2789引進(jìn)型300MW0.20650.29950.5016引進(jìn)型平圩600MW0.20650.28800.4840引進(jìn)型哈三600MW0.20510.28740.4492引進(jìn)型吳涇600MW0.20510.28140.4492由小偏差法計算得出，或是由制造廠提供TPRITPRI機(jī)組類型門桿和軸封漏量對熱耗的影響%一段軸封占門桿軸封總影響中的分額%至中壓缸漏汽量對熱耗率的影響%國產(chǎn)200MW0.7449/引進(jìn)型300MW0.45570.46引進(jìn)型600MW0.42470.40GE 350MW0.30480.34對實際運(yùn)行機(jī)組的實測表明，軸封漏量都比設(shè)計值大0.

8、61.0倍經(jīng)驗證明大修中將軸封間隙調(diào)整到設(shè)計值，或采用新型汽封減少軸封漏量是提高機(jī)組經(jīng)濟(jì)性的有效手段。TPRITPRI名稱 給水端差H kJ/kgQ kJ/kg %1#GJ10 kJ/kg原設(shè)計基礎(chǔ)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名稱抽汽壓損 kJ/kgr kJ/kgH kJ/kgQ kJ/kg %1#GJ4%原設(shè)計基礎(chǔ)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名稱 r 疏水端差H k

10、J/kgQ kJ/kg %1#GJ10 kJ/kg原設(shè)計基礎(chǔ)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名稱H kJ/kgQ kJ/kg %過熱器減溫水2.070595.3549-0.0332再熱器減溫水-1.67641.6

11、080-0.20016小汽機(jī)用汽量-7.84-0.65216給水大旁路2.070595.3549-0.0332鍋爐排污及補(bǔ)水-3.18794.8358-0.44913 1%補(bǔ)水率和鍋爐排污率使熱耗率增加35kJ/kWh，l%再熱減溫水使熱耗率增大約15 kJ/kWh。因此，在保證鍋爐安全運(yùn)行的前題下，應(yīng)盡量少噴再熱減溫水。 TPRITPRI名稱H kJ/kgQ kJ/kg %高旁漏至冷再熱-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冷再熱漏至凝汽器-11.909-5.166-0.795熱再熱漏至凝汽器-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