柱塞泵

The paper introduces application of frequency speed control ler on high-voltage plunger pump from frequency control moter speed theory,frequency speed contrcller volume defined and model selection,controlling optimizing and frequency speed control ler's installation,using,keeping.

从变频调速原理、变频调速器容量确定及选型、控制方式优化及变频调速器的安装、使用、维护等方面入手，介绍了变频调速器在高压柱塞泵上的应用情况；并总结出了处理变频调速下电机发热的方法；最后，对变频调速器的优越性能及节能效果进行了分析计算。

Owing to poor lubricity of water, the design of friction pairs in water hydraulic piston pump encounters a lot of problems.

由于水的润滑性很差，因此水液压柱塞泵的摩擦副设计是个难题。

The adhesive melter features non-electronic thermostat controls and dual-acting piston pumps.

胶粘剂melter功能非电子恒温控制和双代理柱塞泵。

In view of the characteristics of the piston pump's flow ripple, of which the amplitude is large and the harmonic frequences are high, a practical and approximate method for measuring the flow ripple of hydraulic pumps has been advanced.

本文针对较大排量柱塞泵流量脉动幅值大、频宽高的特点，提出了适应于输出通道为等过流面积或近似等过流面积液压泵的流量脉动测试的实用近似方法。

Then, experimental study on the noise performance of the hydraulic piston pump under different conditions has been accomplished.

针对一种新型的阀配流式水压轴向柱塞泵的结构特点，分析其噪声产生的机理，在不同条件下对水压泵进行噪声特性的试验研究，并在此基础上提出有效的降噪措施。

Experiment with vibrating of axial piston pump, find the main characters of vibration.

对柱塞泵振动进行试验，得出该泵的振动基本特性。

First based on the basic principles of hydraulic pumps, the axial piston pump is introduced combining with their own characteristics.

首先从液压泵的基本原理着手，结合轴向柱塞泵自身的特点进行介绍。

In consideration of thread fracture of 3515-type plunger pump head widely used in oilfield,the failure analysis is given.

针对在油田广泛应用的3515型柱塞泵液力端一体泵头体存在的螺纹断裂问题，进行失效分析，提出3种改进结构，有广泛的应用前景和市场效益。

The product is mainly applied in:counticaster machine in mutallurgy industry,cement machine and screw type moving rail etc.hydraulic pressure lubricant pump industry,mesohigh gear lubricant pump,displacement pump,vane pump etc.automobile industry:automobile shock absorber,hydraulic,pressur hydro cylinder,universal machine industry:printing machine,spinning machine,foodstuff machine,tobacco machine,body-building machine etc.

该产品广泛应用于：冶金行业连铸扎机，水泥机械和螺旋式输送机等；液压油泵行业：中高压齿轮油泵、柱塞泵、叶片泵等；汽车行业：汽车减震器、液压油缸等；通用机械行业：印刷机械、纺织机械、食品机械、烟草机械、健身器材等。

Though measuring the acceleration of pump shell and analysis the signal, to realize fault diagnosis.

通过对柱塞泵壳体振动的监测及信号分析处理，实现该泵的故障诊断。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失