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1)  Mechanical contacted seals
机械接触式密封
2)  contacting mechanical seal
接触式机械密封
1.
The results show that the moving rings of the second stage seal of rector coolant pump could change to convergent non-contacting mechanical seals when the first seals fail and it could work on requirements conditions.
计算模拟了机械密封环的端面变形及机械密封由接触式机械密封转变为非接触式机械密封过程。
3)  non-contacting mechanical seal
非接触式机械密封
1.
A new type of fluid lubrication non-contacting mechanical seals for the butane centrifugal compressor was developed and successfully applied,which overcame the disadvantages of former imported contacting seals: great leakage of lubrication oil and short working period.
针对丁烷离心压缩机原用轴封存在密封介质泄漏严重、使用寿命短等问题,开发出流体润滑非接触式机械密封并应用在该机上,有助于解决国内引进的同类机组密封泄漏问题。
2.
The results show that the moving rings of the second stage seal of rector coolant pump could change to convergent non-contacting mechanical seals when the first seals fail and it could work on requirements conditions.
计算模拟了机械密封环的端面变形及机械密封由接触式机械密封转变为非接触式机械密封过程。
4)  oil film non-contact mechanical seal
油膜非接触式机械密封
1.
Analyzes the reasons for the frequent mechanical seal failures, compares the structrueand the advantages and disadvantages of the imported mechanical sealing and the domestic oil film non-contact mechanical sealing, and summarizes the application of oil film non-contact mechanical sealing in ammonia compressor.
分析进口机械密封频繁失效的原因,比较进口机械密封和国产油膜非接触式机械密封的结构及优缺点,总结油膜非接触式机械密封在氨气压缩机上的应用情况。
5)  contacting dry running mechanical seal
接触式干运转机械密封
1.
The working theory of gas quench seal system and characteristic of dry running mechanical seal were introduced,the design and calculating method of contacting dry running mechanical seal for fan and blower were investigated and the experiment and use of this type mechanical seal was presented.
介绍了气体阻塞密封系统工作原理及干运转机械密封的特点,讨论了风机用接触式干运转机械密封的设计和计算方法,并介绍了试制密封的试验及使用情况。
6)  non-contacting mechanical face seal
非接触式机械密封
1.
The cantilever structure is used to guarantee the smooth latex flow and the latx break-block are eliminated owing to the non-contact of the synchronous gear transport, the long work period and the reliable operation are realized by utilizing self-developed non-contacting mechanical face seals.
其主要特征包括采用旋臂式结构保证胶乳流动畅通,同步齿轮传动使双螺杆不接触而避免破乳凝聚现象,采用自主研制开发的非接触式机械密封实现轴封的长周期可靠运行等。
2.
Aimed at the serious leakage from propane pump mechanical seal,the new-type of non-contacting mechanical face seal for propane pump was developed on the basis of the principle of non-contacting mechanical seal.
针对丙烷泵机械密封密封端面泄漏严重的问题,根据非接触式机械密封原理,研制开发出了丙烷泵用新型非接触式机械密封。
补充资料:非接触式密封
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性质:化工动密封的一种。密封时动、静件间不相互接触,而是通过密封组件对被密封流体所产生的压力降来实现密封。非接触式密封又可分为阻塞型和动力型两类。(1)阻塞型密封是指利用动、静密封件间的间隙节流阻塞所产生的阻力来限制介质的泄漏,典型的有浮环密封、迷宫密封等;(2)动力型密封是指依靠轴功率产生的反向压头,以低消介质的泄漏压力来阻止介质的泄漏。典型的有螺旋密封、叶轮密封等。非接触式密封的优点是没有动、静件间的摩擦,无磨损,运行可靠,维修方便,尤其是阻塞型的非接触式密封设计结构简单、耐用,几乎可以不用检修。缺点是这类密封还允许存在一定的最小泄漏量。除浮环密封外,一般不适于易燃、易爆、有毒、贵重流体的密封。

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