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Turbine steam is ultra-high-pressure steam; can lower-grade steam be used as a substitute for it? What is the minimum pressure of steam that can be used?
The so-called shooting discussed here is actually a testing method for pipeline purging. This depends on the cross-sectional area and length of the pipe, and is independent of temperature. Based on experience, considering the flow rate of experience, or the tolerance for noise. It’s best to see how the experienced supervisors on site carry it out; that will make it clear what to do. Those present at the site must wear protective goggles and ear protection; it is strictly prohibited to stand in front of the air outlet, cross over it, or have one’s face facing the outlet.
So, does it just need to ensure that the flow rate is sufficient? For a steam pipeline with a pressure of 10 MPa, can it be operated using steam at 4 MPa as long as the flow rate is adequate?
It’s just the flow rate; if pressure is involved here, it’s hard to say. It involves using high-speed air currents to flush the pipeline; as long as the noise level is tolerable, the higher the noise, the faster the flow rate. Blow for a while first, then try hitting; a smaller area will do. The key is to use a wooden rod to strike the pipe while blowing; the vibration combined with the blowing will yield better results. It strikes the vibration tube from the inlet to the outlet. Vibration purging is a cleaning method, while target shooting is used to check the purging effect.