The optimal hydraulic design can effectively improve the outlet flow pattern of suction box to ensure better flow conditions for pump and raise the efficiency of pumping system substantially.
进水流道水力设计优化可有效地改善进水流道出口流态，确保水泵有良好的进水条件，大幅度提高水泵装置效率。
A brief presentation on computer aided hydraulic design of Francis Turbine runners is given, the general principle of which are also applicable to centrifugal and mixed flow pump runners.
概要介绍混流式水轮机转轮计算机设计的水力设计方法，其一般原理同样适用于离心泵和混流泵叶轮的设计。
This paper introduces the structure and hydraulic design of the multiphase flow centrifugal pump, which draught sands from the riverbed and discharge the air of the suction pipe.
文章介绍一种用于从河底吸取泥砂并且有自吸排气的离心式多相流泵的结构及水力设计。
Centrifugal pump is a commonly hydraulic machine, whose inner flow has direct influence on pump's performance and is a considered problem by the pump designers.
离心泵是一种通用水力机械，其内部流动情况一直是泵设计人员十分关注的问题，因为泵内流动的优劣直接影响泵的性能。
It was shown by calculation results that the flow ripple and fluid noise of hydraulic pump increased seriously when the bulk modulus descended.
结果表明，随着油液体积弹性模量的下降，泵的流量脉动及流体噪声均增大。
The constant-pressure and variable-flow adjustment of inverter-drive pump is widely used for energy saving, but the method has still additional hydraulic loss.
水泵变频调速恒压交流供水是目前应用最广泛的节能供水方式，其能耗较低，但仍存在额外的水力损耗；
The paper describes an overall experimental research on the techniques for measuring the flow ripples of hydraulic piston pumps, according to the practical method for measuring pump flow ripples.
提出了液压泵流量脉动测试的实用近似方法，对液压柱塞泵流量脉动的测试技术进行了系统的试验研究。
Changing the speed of electric motor by using ac frequency conversion is to regulate output flow of hydraulic pump to control the velocity of the motion of hydraulic actuator.
通过交流变频调速改变电机的转速来调节液压泵的输出流量。控制液压执行元件的运动速度。
The influence of outlet circulation of mixed-flow pump on the hydraulic performance of the outlet pipe was studied in this dissertation.
本文主要研究混流泵出口环量对泵出水管道水力特性的影响。
By the new model, a variable displacement hydraulic pump is simulated by the ordinary hydraulic component with hydraulic resistance, abrupt pressure change and invariable flow.
该模型将变量液压泵等效为液阻、压力突变、恒流源构成的一般液压元件。
A new method that hydraulic pump constant flow regulating is realized by using the principle of identifying the load flow with neural network is proposed.
提出一种采用种经网络辨识负载流量原理实现液压泵恒流量调节的新方法。
The radial piston pump can adopt manual-control or electro-hydraulic proportional control to realize the control of constant flow, constant pressure, constant power and load sensitivity etc.
径向柱塞变量泵可以采用手动控制、电液比例控制或负载敏感控制等多种控制方式，实现恒流量、恒压力、恒功率的控制。
A hydraulic pump is considered as a pressure and flow ripple source for the hydraulic system, and its mathematical model in frequency domain is studied.
本文对液压系统中的流量压力脉动源一液压泵的频域数学模型作了研究。
Application Cavitation, liquid hammer and pressure peak may occur in hydraulic systems with changes in flow velocity, e. g. fast closing of a valve or pump starts and stops.
应用空化，液体铁锤和压力顶峰可能用在流动速度方面的变化在液压系统里发生，例如一阀门或者泵的快关闭起停。
The large undulation of pressure at the large-scale hydraulic pump station is usually caused by the pulsating of flow. It's one of essential causes to produce noise in the hydraulic system.
大型液压泵站由于流量脉动往往引起大的压力波动，这是造成液压系统噪声的主要原因之一。
This method is applied in the pump liquid control system by hydraulic coupling, the experimental results is satisfactory when the flow disturbance varies far.
该方法应用于渣浆泵调速型液力耦合器调速液位控制系统，在干扰流量变化很大的情况下，均获得了满意的控制效果。
A new hydraulic design method and the numerical method of axial flow pump impeller are introduced. The integral equation for flow calculation of S1 stream surface of impeller is derived.
介绍了一种新的轴流泵叶轮的水力设计方法，推导了求解叶轮s 1流面流动的积分方程。
The governing behavior of hydraulic coupling has been expounded, and the causes resulting in unstability of outlet flow rate of the said pump being analysed.
阐述了液力联轴器的调节性能，分析了水泵出水流量不稳定的原因。
There exists a saddle type zone in the hydraulic moment curve of axial-flow pump blades which corresponds to the saddle zone of discharge-head characteristic curve of the pump.
轴流泵叶片水力矩随流量变化的关系曲线存在一个马鞍区，并与流量-扬程曲线的马鞍区相对应。
Parallel system, when a hydraulic oil supply to the actuator when a group entered the implementation of the components of the flow is only part of the hydraulic pump output flow.
并联系统中，当一台液压泵向一组执行元件供油时，进入各执行元件的流量只是液压泵输出流量的一部分。
A general scheme of a high pressure, variable flow and variable pressure aircraft intelligent hydraulic pump system is proposed in this paper.
提出了一种高压变流量变压力机载智能泵源系统的总体方案。
The strong points of the compound gear pump are balanced hydraulic pressure of radius, uniform of flow rate, small volume, large displacement and low noise and so on.
它具有径向液压力平衡、流量均匀性好、噪声低、排量大、体积小等优点。
In an ideal hydraulic system, the flow of the pump should just satisfy the load motion and the pump pressure is only a little higher than the load pressure.
较理想的系统应有能力在任何情况下使油泵流量恰好满足负载变化要求，而油压仅比负载压力略高一较小值。
Accumulator is used in hydraulic press driven by pump-accumulator. The high pressure pump with small flow can put working liquid into the accumulator in the intermittent working time of press.
泵-蓄势器传动的液压机，由于采用了蓄势器，故只用流量较小的高压泵。
Hydraulic Door Openeris designed to work together with BS63-B double-stage double-flow single-output hydraulic manual pump.
液压开门器与BS63-B型双级、双流量、单输出专用液压手动泵配合使用。
In the research of water hydraulic technology, flow field simulation is done by the method of Fluid-Solid coupling, leading to the pressure nephogram and velocity vector of the pump model.
在水压技术理论研究方面，应用流固耦合理论对水压齿轮泵进行了二维流场的仿真分析，得出了其流场压力云图和速度矢量图。
In the research of water hydraulic technology, flow field simulation is done by the method of Fluid-Solid coupling, leading to the pressure nephogram and velocity vector of the pump model.
在水压技术理论研究方面，应用流固耦合理论对水压齿轮泵进行了二维流场的仿真分析，得出了其流场压力云图和速度矢量图。
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