旋转动密封装置是旋转控制头轴承总成的关键部件，其性能好坏直接影响旋转控制头的使用寿命。
As the key part of the rotary control head's bearing assembly, the capability of the rotary dynamic seal equipment effects on the using life of the rotary control head.
研制旋转防喷器有几大难点，主要集中在密封胶芯、旋转动密封及轴承，各自的寿命满足实际应用是保证钻井施工安全的关键。
There are many difficulties during the new rotating blowout preventer's manufacture and test, they concentrate on spherical seal, dynamic seal and bearings.
本发明可以旋转动密封，解决了材料在高温连续煅烧时与空气隔绝，实现了材料可以与空气隔绝以及气氛保护的条件下高温连续煅烧。
The invention can rotate seal to insulate air in high temperature continuous calcinations, to calcine material insulated from air and under gas protection at high temperature.
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