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笔者在液相有机热载体锅炉安装监检工作中发现以下几个容易忽视的问题,进行简易叙述探讨:1)用热设备未安装旁通阀门或采用三通自动温度调节阀。(如图1所示)当用热设备温度达到或将达到用热设备工艺要求温度时,操作工人或自动温度调节阀将关闭或关小阀门,导致导热油无法回流或少量回流,造成导热油循环流量减少或停滞,造成管壁超温过热,加速导热油变质,严重时会造成导热油过热裂解,炉管结焦、破裂。所以正确的安装方法应加装旁通阀门和三通温度调节阀,使导热油正常回流。(如图2所示)
The author in the liquid organic heat carrier boiler installation inspection found the following several easily overlooked problems, a brief discussion: 1) with the bypass valve is not equipped with thermal equipment or the use of automatic tempering valve. (Shown in Figure 1) When the temperature of the hot equipment reaches or will reach the required temperature with the thermal equipment, the operator or the automatic temperature control valve will close or close the valve, resulting in the heat transfer oil can not return or a small amount of reflux, resulting in heat-conducting oil Circulation flow to reduce or stagnate, resulting in overheating pipe wall, accelerate the deterioration of heat-conducting oil, heat will lead to overheating cracking, furnace tube coking, cracking. Therefore, the correct installation method should be installed by-pass valve and tee temperature control valve, the normal heat reflux oil. (as shown in picture 2)