Critical sealing interface in steam generator pressure relief valves that regulates pressure release.
The disc and seat form the primary sealing mechanism in a steam generator pressure relief valve assembly. The disc is the movable component that lifts off the stationary seat to allow steam discharge when system pressure exceeds the set point, then reseals against the seat when pressure normalizes. This interface must maintain leak-tight closure under normal operating conditions while providing reliable, repeatable opening during overpressure events.
诱因 → 失效模式 → 工程缓解
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Primary wear mechanisms include erosion from high-velocity steam flow during discharge, corrosion from chemical contaminants in steam, galling from metal-to-metal contact during operation, and thermal cycling effects that cause material degradation.
Visual inspection should occur during routine maintenance shutdowns (typically annually). Dimensional inspection and leakage testing should be performed according to manufacturer recommendations or regulatory requirements, usually every 12-24 months depending on service conditions.
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CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。
说明目标数量、应用场景、交期和关键技术要求，用于准备 RFQ 或供应商评估。