The output end of the T-shaped three-way is communicated with the input end of the annular-space spray valve which is fixedly connected to the plasma cutting torch by the holding mechanism.
T型三通的输出端连接喷雾阀的输入端，环隙式喷雾阀通过夹持机构固定连接在等离子割炬上。
2
Based on the theory of annular gas-liquid two-phase flow, a model to calculate gas-cutting fluid flow in wellbore is established, and meanwhile a numerical solution to the model is given.