查询词典 plunger piston

The principal of buffer is described as follows.At impulsing down,the piston moves down and vacates the annular space.The pressure in respiratory cavity decreases to a certain level and the traveling valve opens.At that time,the liquids enter into traveling valve and cavity and the plunger is impulsed upward to carry out the gentle transient at the sudden change.When the upward impulsing begins,the respiratory cavity is subjected to pressure and the traveling valve closes.During the gradual pressure rising,the liquids in respiratory cavity effuse from the upper ventage and the sudden change of force-summing direction of plunger is relieved relying on the resistance of ventage.

其原理大致是：下冲程时，活塞向下运动，让出环形空间的体积，呼吸腔内压力下降，下降到一定水平后，游动阀打开，此时，游动阀和小孔同时进液，使柱塞在从上死点处突然改变方向向上运动时得到缓冲，实现了柔和过渡；当上冲程开始时，呼吸腔受压，游动阀关闭，在压力逐渐上升的过程中，呼吸腔内的液体从上部的小孔流出，并依靠小孔的阻力使柱塞受力突然换向得到缓冲。

Piston oil, particle plunger oil, graphite and non-graphite plunger of oil combustion machine, spray gun, automatic spraying for the first, temperature control rods, Case, fever sets, and other die-casting machine accessories .

柱塞油、颗粒柱塞油、石墨与非石墨性柱塞油；燃烧机、喷枪、自动喷务头、控温棒、保护套、发热套等多种压铸机系列配件产品。

Then, the method to estimate cavitation erosion characteristic of high pressure piston plunger pump by analyzing impingement angle on outlet of throttling groove is put forward. That is, to hold the impingement angle range of 30°～60°as appraisal criterion of cavitation erosion characteristic on high pressure hydraulic plunger pump.4 The throttling characteristic of hydraulic control valve is studied by CFD calculation and experiment.

最后，提出了一个通过分析节流槽出口处的射流方向来评价高压轴向柱塞空蚀特性的空蚀评价方法，即将节流槽出口的射流角范围30°～60°作为评价高压轴向柱塞泵空蚀特性的标准。4对液压控制阀的节流特性进行了CFD数值计算和试验研究。

On the basis of improved continuous flow equation,the mathematical model that expresses the interrelationship of the liquid pressure,the movement of plunger piston and the pump barrel clearance were setup,and simulating model s of the liquid instantaneous pres.

根据改进的连续流方程，建立了泵筒内液体压力、柱塞运动规律与柱塞泵筒间隙之间相互关系的数学模型，从而建立了泵筒内液体瞬时压力与泵示功图的仿真模型。

Mud is a common type or plunger-type piston, driven by the motive power of the crankshaft rotary pump, crankshaft driven through the crosshead and then the plunger in the pump cylinder piston or reciprocating motion to do.

常用的 泥浆泵是活塞式或柱塞式的﹐由动力机带动泵的曲轴回转﹐曲轴通过十字头再带动活塞或柱塞在泵缸中做往復运动。

The liquid which expands in the heat sensor with the rise of temperature forces its way over the capillary tube in the actuator by means of removing a plunger piston, which is made tight externally be means of a flexible metallic tube, at which the pi- ston rod, which comes out of the actuator, moves the valve rod against a spring and a closing valve throttles or closes.

在热感应器中扩张的液体由于那在毛细管上的温度军队的上升它的方法在那主动器经由除去一个跳进的人活塞，这被做紧紧地外部地是有柔性的金属管方法哪里 pi-从主动器出来的 ston 竿移动活瓣竿相对于一个春天和一个结束活瓣节流阀或结束。

Since the rotary plunger pump piston at each stroke can randomly rotate constantly change with the pump plunger cylinder contact surface, so that circular plunger gradually wear uniform or scaling at the same time, sand from the plunger and pump barrel between discharge and resolved accumulation Materials abrasion caused by wear and serious positioning rod release.

自旋转柱塞抽油泵可使柱塞在每一冲程中随机转动，不断地改变柱塞与泵筒的接触面，使柱塞圆周逐渐均匀磨损的同时将砂粒或结垢从柱塞与泵筒之间排出，解决了磨蚀材料聚集所引起的严重定位磨损及杆柱脱扣

Plunger piston: anti-attrition , improve the lubricating

柱塞：减少磨损，改善润滑

Since the rotary plunger pump piston at each stroke can randomly rotate constantly change with the pump plunger cylinder contact surface, so that circular plunger gradually wear uniform or scaling at the same time, sand from the plunger and pump barrel between discharge and resolved accumulation Materials abrasion caused by wear and serious positioning rod release.

自旋转柱塞抽油泵可以使柱塞在每冲程中随机转一下，不停地转变柱塞与泵筒的接触面，使柱塞圆周逐渐匀称磨耗的同时将砂粒或结垢从柱塞与泵筒之间排出，解决了磨蚀材料聚集所导致的紧张定位磨耗及杆柱脱扣。

In general the wall thickness of plunger piston will be 7-10 mm, material : 45#,length : 1200 mm .

柱塞料壁厚一般7-10mm，材质45#，长度1200mm，亦可定制特种泵长柱塞料。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。