The article analyzes that the constant pressure variable piston pump equipment allocated on the imported 922e LHD is not suitable for domestic using conditions.
文章对进口922e铲运机所配装的恒压变量柱塞泵不适合国内使用条件进行了分析。
The more the pressure difference value is , the less the energy-saving rate is and the less scope of high efficiency of variable pump is, and vice versa.
压差设定值越大，系统的节能率越小，循环水泵在高效区内的变频范围越小，反之亦然；
A. Hydraulic pressure ADAPTS constant power variable axial piston pump for energy saving.
液压泵采用恒功率自动变量轴向柱塞泵，以节省能源。
In the light of the pickup current of a submersible electric pump being too large when started at full pressure, a new variable frequency control system is developed.
针对电动潜油泵工频全压启动时存在启动电流过大等诸多问题，开发出新型电动潜油泵变频控制系统。
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 characteristic is similar to that of the constant pressure variable displacement regulation for the pump.
这一特性和泵的恒压变量调节特性相类似。
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。
In the heat-supply system with distributed variable frequency pump, there exists a zero pressure difference, at which supply and return water pressures are equal.
分布式变频泵供热系统中存在零压差点，该点供回水压力相等。
Simultaneously, it provides the method to determine the best pressure of header system and optimum frequency of variable frequency pump based on the special working condition.
同时，给出了在特定工况下，确定最佳母管压力和变频泵最佳频率的方法。
The variable volume, pressure compensated design features of this pump combined with significant advancements in noise reduction make this pump a perfect match for many industrial applications.
采用多流量、压力补偿设计，噪音控制性能有重大提升，能够胜任多种工业应用需要。
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。
So, the selection of variable pump pressure limit is appropriate, because this type of pump flow with the system pressure varies.
所以选择限压式变量泵为宜，因为这种类型的泵的流量随系统压力的变化而变化。
LC Gradient System VLIncludes gradient pump (max. pressure 400 bar) with integrated degasser, manual injector and variable wavelength detector with standard flow cell.
1220高效液相色谱仪（二元梯度泵），带手动进样器、紫外检测器，标准流通池。
LC Gradient System VLIncludes gradient pump (max. pressure 400 bar) with integrated degasser, manual injector and variable wavelength detector with standard flow cell.
1220高效液相色谱仪（二元梯度泵），带手动进样器、紫外检测器，标准流通池。
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