According to the needs of marine engineering equipment, designed a special speed limiting shut-off valve. First of all, the flow path design and theoretical calculation of main structural parameters of the speed limiting shut-off valve is carried out, and the UG software is used to simulate the components of the speed limiting shut-off valve. Secondly, a new experimental method is proposed which is to use the small diameter cylinder drive the large diameter cylinder to produce the large flow to close the speed limiting shut-off valve, and the front and rear damping hole diameter's influence on the speed limiting shut-off valve and the system performance is carried out. The test results show that the speed limiting shut-off valve meet the needs of marine engineering equipment in terms of shut-off time and shut-off flow rate, and the diameter of the front and rear orifice has a significant impact on the dynamic performance of the speed limiting shut-off valve. The new ex-periment plan can provide reference for the same type of valve experiment, the conclusion of the experiment can provide guidance for the development of the same type of speed limiting shut-off valve.%针对海洋工程装备的需求,设计了一种专用限速切断阀.首先进行了针对性的限速切断阀流道设计和限速切断阀各结构参数的理论计算,并利用UG软件进行限速切断阀各部件的模拟装配;其次,针对所设计生产的限速切断阀样件,设计了一种小缸径油缸拉动大缸径油缸的新型试验系统,对限速切断阀的前、后阻尼孔直径大小对限速切断阀动态性能的影响进行研究;试验结果表明,该种限速切断阀在关断时间、切断流量等方面满足张力补偿器系统的要求,且前、后阻尼孔直径对限速切断阀的动态性能有较大影响;新型的试验方案可为同类阀的试验做借鉴参考,试验结论可为同类型限速切断阀的研制起到指导作用.
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