高压给水加热器人孔密封结构两种形式的探讨

Discussion on different forms of manhole hermetlcally-sealed construction for high pressure feedwater heater

高压加热器作为火力发电机组中回热系统的关键设备,其水室承受水侧高压力,对水室检修人孔的密封性能要求很高。本文主要对高压加热器水室检修人孔椭圆自密封和伍德密封两种形式进行探讨。

As the key equipment of heat recovery system in thermal power unit, the water chamber of high pressure feedwater heaters bears high pressure of the water, so there are higher requirements for inspection manhole on the water chamber. This article mainly introduces two different forms of in- spection manhole on the water chamber of the high pressure feedwater heater, including elliptical self sealing and Wood＇ s sealing.