Analysis on leakage reason of steam lead pipe bend of main security valve in boiler reheater outlet

Huadian Technology ›› 2012, Vol. 34 ›› Issue (3): 64-65.

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Analysis on leakage reason of steam lead pipe bend of main security valve in boiler reheater outlet

LIU Junguo

Huadian Energy Mudanjiang Second Power Plant, Mudanjiang 157015, China

Received:1900-01-01 Revised:1900-01-01 Online:2012-03-25 Published:2012-03-25

Abstract

Abstract: The reasons of frequent leakage occurred in steam lead pipe bend of reheater outlet main security valve in HG-670-13.7-YM9 boiler were analyzed. It was pointed out that the main reason of the frequent leakage occurred in the steam lead pipe bend of reheater outlet main security valve is the thermal stress caused by the excessive temperature difference. After improvement, the leakage fault was eliminated basically. 

Key words: steam lead pipe, temperature difference, thermal stress, leakage, improvement measure

LIU Junguo. Analysis on leakage reason of steam lead pipe bend of main security valve in boiler reheater outlet[J]. Huadian Technology, 2012, 34(3): 64-65.

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Analysis on leakage reason of steam lead pipe bend of main security valve in boiler reheater outlet

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