Prevention measures for pipe bursting of water wall of 600MW ultrasupercritical boilers

Abstract

Abstract:

There has been several bursting and leakage accidents occurred on water wall pipes of the 600MW ultrasupercritical unit in Liaoning Huadian Tieling Power Generation Company Limited. Considering from the operation, methods such as the throttle orifice at the inlet of antiflushing water wall, the improvement of steam water quality, alteration of sliding pressure operation curve and the improvement of daily operation (stop and start)of units and are proposed. Measures effectively prevent the water wall from bursting, greatly reduce the unplanned outages and significantly improve the economic benefits.

Key words:

ultrasupercritical boiler, water wall, pipe bursting, unplanned outage

XIA Xuemin.

Prevention measures for pipe bursting of water wall of 600MW ultrasupercritical boilers

[J]. Huadian Technology, 2018, 40(8): 52-53.

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Prevention measures for pipe bursting of water wall of 600MW ultrasupercritical boilers

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