介绍了高炉煤气压缩机采用氮气密封的改造。
Reformation of nitrogen seal of blast furnace gas compressor is introduced.
介绍干气密封的结构、工作原理、优越性，以及在离心泵轴封领域的应用情况和前景。
The paper introduces the structure, working principle, advantage of gas seal in centrifugal pump and its application and prospect.
介绍了一种新型高压氨泵采用干气密封的结构及工作原理。
A new type of dry gas seal structure and working principle applied on high pressure ammonia pump were recommended.
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