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锅炉安装中,玻璃管水位计是常用的水位计。水位计采用加厚的玻璃管,长度应根据实际需要确定。玻璃管的切断是根据热胀冷缩的原理进行的。首先,取一段8号铅丝,用手钳子焜成圆圈,大小以能套在玻璃管外面为宜,不可太大或太小,太大容易松动,太小会套不进去,铅丝圈以套在玻璃管外面、又紧贴玻璃管为合适。然后,将套圈放入火中加热,烧红后迅速套在玻璃管切断处,一般常用白厚漆画记号,并用冷水往管上撩,这时,热胀的玻璃管突然冷缩而被切断。如断口不整齐,可在水泥地面上予以磨平。这种方法简便易行,易于掌握,而且误差小,又能保证质量,值得
In the boiler installation, the glass water level gauge is a commonly used water level gauge. The water level gauge adopts thickened glass tubes, and the length should be determined according to actual needs. The cutting of glass tubes is based on the principle of thermal expansion and contraction. First, take a piece of lead wire number 8 and pliers to make it into a circle. The size should be set on the outside of the glass tube. It should not be too big or too small. It is too loose and too small to fit in. Outside the glass tube, but also close to the glass tube is suitable. Then, the ferrule is placed in a fire and heated. Immediately after the red, it is placed on the cut-off of the glass tube. Generally, the white lacquer painting mark is used, and cold water is added to the tube. At this time, the heat-expanding glass tube is suddenly cooled and shrunk. Cut off. If the fracture is not neat, it can be smoothed on the concrete floor. This method is simple, easy to grasp, and the error is small, but also can guarantee the quality.