1967年在法兰克福举办的“国际化工展览”上，展出 了新型的三偏心设计（Tripleeccentricdesign）蝶阀，这种新型蝶阀的密封及 3 琶华大学硕士学位论文 控制系统性能大为提高，很快用于中高压系统。
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本文论述了单偏心浮动轴式剪切机的液压平衡条件及液压平衡系统的设计原则，讨论了液压平衡回路的三种方案。
The design principles of hydraulic balancing system floating shaft shears are shown in this paper. And three design schemes of hydraulic circuit are discussed.
基于上述的理论分析，由已知参数设计出了三偏心蝶阀的三维图形。
Based on the theory analysis above-mentioned, according to the given parameters, we designed the three dementions figure of the tri-eccentric butterfly valve.
结构设计类似三偏心硬密封蝶阀，具有操作轻便、开启过程无磨擦、零泄漏、寿命长等优点。
Structure Designed is similar to hard sealing of three - eccentric of butterfly valve, with convenient operation, without friction opened and leakage, long life.
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