结合试验结果和计算流体动力学的解析结果，研究液压锥阀的噪声评价方法。
Combining experimental solution and CFD analyses, a method to appraise noise of poppet valve was studied.
以插装型液压锥阀为研究对象，研究了几何结构参数及边界条件对锥阀流场及气穴现象的影响。
The hydraulic cartridge cone valve is chosen for the study of possibility to explore its effects of geometry parameters and boundary condition on flow field and cavitation of cone valve.
研究表明：增大阀口开度，增大出口压力，并对阀芯结构进行修改后，插装型液压锥阀阀口气穴现象均可有效减弱。
It can be concluded that cavitation of hydraulic cartridge cone valve is reduced by increasing the opening stroke and the outlet pressure and changing the geometrical structure of valve spool.
应用有限元方法对液压锥阀流场进行数值预报，分析其能量损失，噪声和流场结构的关系，并在此基础上对流道结构进行优化设计。
After calculating the flow field of the pyramidal, the relationship between energy loss, noise and the structure of the valve has been analyzed; the flow channel has been optimized.
对纯水液压锥阀阀口流场气穴进行了数学建模，并用FLUENT软件进行了仿真分析，从而得到气穴发生的程度与流场压力分布之间的关系。
The flow field cavitation inside the water hydraulic poppet valve was modeled and analyzed by using the software of FLUENT, and the relation between the cavitation and the pressure was investigated.
为了提高移架速度，确保对顶板的及时支护，采用锥阀液压系统。
In order to enhance moves a speed, guarantees is prompt to the roof support, USES the mushroom valve hydraulic system.
为了提高移架速度，确保对顶板的及时支护，采用锥阀液压系统。
In order to enhance moves a speed, guarantees is prompt to the roof support, USES the mushroom valve hydraulic system.
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