查询词典 poppet

Cavitations is the major problems of designing water hydraulic valve, understanding the relationship between shape of valve and cavitations , avoiding cavitations is extremely important, this paper, the numerical simulation and visualization research of flow field is carried out to research relation between the flow field of poppet valve and the length of valve seat by finite volume numerical method.

气穴是研制水压阀存在的主要难题，认识阀口形状与气穴的关系，避免产生气穴现象是极其重要，本文应用有限体积数值计算方法针对阀座倒角长度变化对水压阀阀道内流场的影响进行数值模拟和可视化研究，得到了一些有益的结论：倒角长度的改变对阀口间隙以及阀芯锥面与柱面相接的地方的负压会产生比较大的影响

The simulation results show that the spring stiffness and initial force have important effect on the poppet valve's opening displacement, the delay-closing time and the closing velocity, and there must be an optimal matching between those two spring factors.

仿真结果表明，在同时保证阀芯有较大的开启度和较短的滞后关闭时间时，弹簧刚度和预紧力因素之间存在着最佳组合：k=10 N/cm，f=15N；同等地改变预紧力比改变弹簧刚度，对阀门的运动影响更大。

Besides, the vibrations of the valve body and poppet induced by the cavitating flow are detected using vortex displacement transducer, laser displacement meter and digital strain device.

实验同时采用涡流式位移传器，激光位移器和数字应变测量仪等构成的检测系统，研究了气穴流场诱发的阀体与阀芯振动。

When the load smaller than the first outlet pressure adjustment valve set pressure, pilot valve Poppet head off an oil chamber, oil chamber 2 is equal to the pressure on the outlet pressure, the main valve of the sliding shaft 2 inside the cavity in the oil a rigid under the action of a small spring at the lowest position, the main valve and the valve slider protruding shoulder posed by all the valve port opens, pressure reducing valve without decompression.

当负载较小，出口压力低于先阀的调定压力时，先导阀的提动头关闭，油腔1、油腔2的压力均等于出口压力，主阀的滑轴在油腔2里面的一根刚性很小的弹簧作用下处于最低位置，主阀滑轴凸肩和阀体所构成的阀口全部打开，减压阀无减压作用。

In this case a proportional solenoid is used to push a poppet against a seat via a spring.

在此比例电磁铁被用来推动一个锥阀芯通过一个弹簧压缩阀座。

A deep sea high pressure valve with pressure balanced poppet was designed to resolve the problem of bidirectional seal in the deep sea sampling devices.

为了解决深海取样中双向密封的困难，设计了带平衡阀芯的深海高压阀，高压阀选用耐高温、耐腐蚀、高强度工程塑料PEEK加工整体阀芯，采用PEEK阀芯-钛合金阀套的密封方式，并对这种阀的使用寿命进行了分析。

He knows that he's one of the mostdominant players in the NBA right now.

我知道他现在是联盟里最有统治力的球员之一了。

Using analysis method of BCG , the dissertation analyzed the management of voluntary service organizations .

利用BCG分析方法对我国的志愿服务组织管理进行了分析。