热水锅炉自动排汽阀是近几年研制成功的锅炉安全保护装置,它的作用和使用效果,还没有被广大锅炉用户所认识,本文针对热水锅炉所经常发生的汽化、汽塞问题,谈一下使用自动排汽阀的必要。 1 热水锅炉的汽化问题在用热水锅炉的本体型式大体可分为锅壳式和管架式两种。锅壳式热水锅炉自身的水容量较大,受热面又有独立的循环回路,停泵、压火后锅炉仍可维持较弱的自然循环流动,因此发生汽化所需的时间较长。但管架式强制循环热水锅炉自身的水容量小,在正常循环的状态下,锅水的汽化还不是一个突出的问题。可是在停泵、压火期间,水循环停止,炉内未燃尽的燃料仍在 Automatic steam exhaust valve of hot water boiler is a boiler safety protection device developed successfully in recent years. Its function and effect has not been recognized by the majority of boiler users. In this paper, according to the problem of vaporization and gas plug often occurring in hot water boiler, Talk about the need to use automatic exhaust valves. A hot water boiler vaporization problems In the hot water boiler body type can be broadly divided into two kinds of shell and tube rack. Boiler-type hot water boiler has a large water capacity and an independent circulation loop on the heating surface. After stopping the pump and suppressing the pressure, the boiler can still maintain a weaker natural circulation flow, so the time required for vaporization is longer. However, the tube-type forced circulation hot water boiler has its own small water capacity. Under normal circulation, the evaporation of pot water is not yet a prominent problem. However, in the stop pump, pressure during the water cycle to stop the furnace unburnt fuel is still