汽轮机汽封间隙调整方法

华电技术 ›› 2010, Vol. 32 ›› Issue (3): 28-30.

汽轮机汽封间隙调整方法

丁怀高

淮北市热电有限公司，安徽淮北235029

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-03-25 发布日期:2010-03-25

Study on adjustment method of gland seal clearance of steam turbine

DING Huaigao

Huaibei City Power and Heat Corporation Limited, Huaibei 235029, China

Received:1900-01-01 Revised:1900-01-01 Online:2010-03-25 Published:2010-03-25

摘要/Abstract

摘要： 中小型汽轮机组在频繁启动过程中轴封套普遍存在严重磨损的现象，多数热电厂都会按照制造厂规定值的上限值或更大值对全部前汽封（后汽封）进行调整，导致前汽封漏汽量逐渐增大，甚至造成汽轮机油质严重恶化。提出了制造厂的规定值与热态启动时最大允许值相结合的调整方法，有效避免了汽封动、静之间的磨损。

关键词: 汽封间隙, 调整, 规定值, 最大允许值, 磨损

Abstract: The severe wear of shaft gland sleeve is widely existed in middle and small turbine units due to frequently startingup. In most thermal power plants, all front gland seals (rear gland seals) were adjusted according to the upper limit of specified value of the clearance given by manufacturer or larger value, and this caused the steam leakage of front gland seal to increase gradually, even caused the quality of turbine oil to deteriorate seriously. An adjustment method, in which the specified value given by manufacturer is combined with the maximum allowable value during hot startingup, was proposed, and the wear between the moving and static parts of gland seal was avoided successfully by the method.

Key words: gland seal clearance, adjustment, specified value, maximum allowable value, wear

丁怀高. 汽轮机汽封间隙调整方法[J]. 华电技术, 2010, 32(3): 28-30.

DING Huaigao. Study on adjustment method of gland seal clearance of steam turbine[J]. Huadian Technology, 2010, 32(3): 28-30.

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