For high temperature and corrosive environments, there are certain materials can be used, for example: high chromium nickel stainless steels such as 304, 321, 316L, 310S, etc.
Optimized design of the soot blower tube: The outer diameter of the tube is generally as Φ60, Φ76, Φ89, Φ102, Φ114, etc. Since the soot blower tube works as a cantilever beam when the tube is extended, the cantilever beam deflection is calculated as follows:
从以上式子可以看出,减少悬伸挠度的方法如下:
适当增大枪管直径,即以增大截面惯矩来减小挠度。
要有足够的介质流量,来降低管壁温度,保持材料强度和增大弹性模量以减少挠度。
在枪管的行程分段,根据不同温度和载荷,采用不同材质和不同壁厚。
在保证枪管挠度最小前提下,尽可能使使用的钢管用料较小,这样枪管的重量不仅降低,挠度会减少,而且还节约材料,降低了成本,使枪管的制造达到了优化设计的目的。
吹灰器枪管的质量控制:
由于长吹灰器枪管是一种受高温、内承压、自身旋转的部件,在起停和运行中又引起热应力和高温烟气的腐蚀,结构上又有异种钢焊接等,所以对材料选用、制造和检验的控制 ,如焊口的结构、焊接工艺、热处理、无损探伤检查等要严格贯彻相关标准要求,以保证使用的可靠性。
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