Use a pressure reducing regulator or separate control valve to safely discharge gas from cylinders. Use a check valve to prevent reverseflow into the cylinder.
使用减压调整器或单个的控制阀来安全地从钢瓶中排出气体。采用止回阀，防止回流入钢瓶。
2
The numerical simulation for furnace gasflow and coal powder particle motion under various conditions of reverse secondary air is carried out based on turbulent flow and multiphase flow theories.
运用湍流理论和多相流动理论对不同二次风反切工况下炉内气流、煤粉颗粒运动进行了数值模拟。
3
On gas withdrawal systems, use a check valve or other protective apparatus in any line or piping from the container to prevent reverseflow.