Analysis on application of lateral tooth steam seal in domestic 300MW steam turbine

Huadian Technology ›› 2013, Vol. 35 ›› Issue (5): 7-9.

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Analysis on application of lateral tooth steam seal in domestic 300MW steam turbine

ZHANG Quan

(Guangdong Yudean Shaoguan Power Plant, Shaoguan 512000, China)

Received:1900-01-01 Revised:1900-01-01 Online:2013-05-25 Published:2013-05-25

Abstract

Abstract: Taking the reformation of terminal steam seal of the domestic 300MW unit turbine in a power plant as example, the deficiencies of the traditional steam seal were analyzed. The features of the lateral tooth steam seal were introduced. After the terminal steam seal of the steam turbine in the power plant was transformed into lateral tooth steam seal, the steam leakage of the terminal shaft seal of the turbine decreased by 0.45～0.85t/h，the microwater content in lubrication oil decreased significantly, the efficiency of HP and IP cylinder was improved, and the steam consumption of the unit was reduced.

Key words: steam turbine, shaft seal, lateral tooth steam seal, steam leakage

ZHANG Quan. Analysis on application of lateral tooth steam seal in domestic 300MW steam turbine[J]. Huadian Technology, 2013, 35(5): 7-9.

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Analysis on application of lateral tooth steam seal in domestic 300MW steam turbine

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