The theory of turbulent jet has been employed to induce new formulas for wall jet, and on the base of correct spray penetration, air entrainment model in swirl field has been built.
An urgent shutdown fault of a liquid-product air separation unit, due to water penetration into instrument gas pipe, is introduced. Corresponding treatment and precautions are also proposed.
文章介绍了一起因仪表气管道带水造成液体空分设备紧急停车的故障，提出了相应的处理和预防措施。
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KQC series of air hammers used in gas drilling can solve certain problems, such as lower ROP(Rate of Penetration) and well deviation, which occurred in mud drilling in above medium hard formation.