steam zone

Anatomise the energy change of the oil zone and injection steam during soak period, the reasonable calculation formula to calculate the time of soaking is deduced.

详细剖析了焖井过程中油层和蒸汽的能量变化，推导了焖井结束后加热半径的计算公式，推导出确定焖井时间的合理计算公式。

The results show that alkali metal silicate is decomposed into alkali metal steam that rises with gas in the high temperature zone.

结果表明：在高温区，碱金属硅酸盐大量分解形成碱金属蒸气随煤气上升；

The condensate passage is arranged around the steam passage and connected with the condensing zone and the evaporator.

该冷凝物通道则环绕于该蒸汽通道并连接该凝结区域与该蒸发器。

The condensing zone is connected with the other end of the steam passage to condense the steams to produce a condensate.

该凝结区域则与该蒸汽通道的另一端相连，用以凝结该蒸汽为冷凝物；

The ultrasonic testing methods for blades with fork root, blades with fir-tree root, the transition zone from blade to root, blade body, lacing wire, and shroud band in heavy-duty steam turbine have been presented.

介绍了大功率汽轮机叉型叶根叶片、枞树型叶根叶片、叶身和叶根过渡区、拉筋、围带的检测方法。