四川电力技术
四川電力技術
사천전력기술
SICHUAN ELECTRIC POWER TECHNOLOGY
2015年
4期
88-90
,共3页
超临界锅炉%SOFA%末级过热器%配风%热偏差
超臨界鍋爐%SOFA%末級過熱器%配風%熱偏差
초림계과로%SOFA%말급과열기%배풍%열편차
supercritical boiler%SOFA%finishing superheater%air distribution%heat deviation
针对珠海金湾发电厂600 MW超临界机组在运行的过程中，存在烟气流场分布不均导致局部管壁出现超温的现象，限制了主汽温、再热汽温的运行参数。不但降低了机组的经济性，而且因受热面的局部超温使氧化皮快速生成，导致受热面爆管影响了机组安全性。通过不同SOFA配风方式对末级过热器偏差影响的研究，探索出最佳的SOFA配风方式，实现对热偏差有效控制，为机组安全、经济运行提供了保障，同时也为解决其他同类型机组的热偏差问题提供参考。
針對珠海金灣髮電廠600 MW超臨界機組在運行的過程中，存在煙氣流場分佈不均導緻跼部管壁齣現超溫的現象，限製瞭主汽溫、再熱汽溫的運行參數。不但降低瞭機組的經濟性，而且因受熱麵的跼部超溫使氧化皮快速生成，導緻受熱麵爆管影響瞭機組安全性。通過不同SOFA配風方式對末級過熱器偏差影響的研究，探索齣最佳的SOFA配風方式，實現對熱偏差有效控製，為機組安全、經濟運行提供瞭保障，同時也為解決其他同類型機組的熱偏差問題提供參攷。
침대주해금만발전엄600 MW초림계궤조재운행적과정중，존재연기류장분포불균도치국부관벽출현초온적현상，한제료주기온、재열기온적운행삼수。불단강저료궤조적경제성，이차인수열면적국부초온사양화피쾌속생성，도치수열면폭관영향료궤조안전성。통과불동SOFA배풍방식대말급과열기편차영향적연구，탐색출최가적SOFA배풍방식，실현대열편차유효공제，위궤조안전、경제운행제공료보장，동시야위해결기타동류형궤조적열편차문제제공삼고。
There is uneven distribution of gas flow which leads to the excessive temperature so as to limit the operating parame -ters of main steam temperature and reheat steam temperature during the operation of 600 MW supercritical units in Zhuhai Jin-wan power plant .It not only reduces the economy of the units , but also influences the security of the units because the local o-verheating of heating surface enables the rapid generation of oxide skin which causes pipe explosion of heating surface .The effects of different SOFA air distribution on the deviation of finishing superheater are studied , and the best SOFA air distribu-tion scheme is found out to achieve the effective control of superheater deviation , which provides a guarantee for the safe and e-conomic operation of the units and a reference for solving heat deviation of other units of the same kind .
