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说明:双击或选中下面任意单词,将显示该词的音标、读音、翻译等;选中中文或多个词,将显示翻译。
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1) twin-screw pump
双螺杆泵
1.
Real-Time monitoring system for performance test of a twin-screw pump;
双螺杆泵性能测试的实时监控系统
2.
Profile analysis and simulation study of twin-screw pump;
双螺杆泵型线分析及仿真研究
3.
Down-hole twin-screw pump system has excellent performance in the oil production, but its research goes slowly both in China and abroad, and no mature theory is put forward at present.
井下驱动潜油双螺杆泵系统在石油开采方面有良好的性能表现,但国内外对其研究起步较晚,至今还未有成熟的理论,因此加快加深对该系统的开发研究,将有助于建立一种高效经济的石油开采方式。
2) double screw pump
双螺杆泵
1.
Energy conservation technology reformation of double screw pump substituting centrifugal pump;
油田双螺杆泵代替离心泵的节能技术改造
2.
Research on new-type double screw pumps and its application;
新型双螺杆泵研制与应用
3.
Improvement and hermeticity analysis of B type double screw pump curve
B型双螺杆泵型线的改进与密封性分析
3) Twin Screw Pump
双螺杆泵
4) double-screw pump
双螺杆泵
1.
Widespread circumstance that aim at the double-screw pump profile currently,a kind of arc shape that avoid the point contact was provide.
针对现有双螺杆泵型线普遍情况,提出了一种圆弧修正的型线,避免了点接触,从根本上解决影响双螺杆泵寿命的型线结构问题。
5) double entry screw pump
双吸螺杆泵
6) double helix single screw pump
双头单螺杆泵
1.
The expressions of linear of stator and rotor are derived and being dummy modeling with the Pro/Engineer wildfire aiming at offering the reference for future process and amending of the double helix single screw pump.
在对各种摆线分析比较的基础上,提出采用短幅内摆线作为原始齿形曲线用于定子骨线设计,其共轭曲线用于转子的双头单螺杆泵设计。
2.
According to overall principle of double helix single screw pump for linear optimization,we ensure the optimization goal and restrain terms to set up a noptimization mathematics model.
根据双头单螺杆泵线型优化的总体原则确定优化目标、约束条件,建立短幅内摆线线型的优化数学模型。
3.
Compared with single helix single screw pump, double helix single screw pump has displacement great with high efficiency, such advantages as it is good that energy consumption is low, the rotor receives the strength state, but because domestic less to the theory of double helix single screw pump and experimen.
双头单螺杆泵与单头单螺杆泵相比具有排量大、效率高、能耗低、转子受力状况好等优点,在国际上得到逐步的推广。
补充资料:双螺杆泵的选型要点
性能参数的选择: 1.流量Q: 作为容积式泵,影响双螺杆泵流量的因素主要有转速n,压力p,以及介质的粘度v。 1.1 转速 n 的影响: 螺杆泵在工作时,两螺杆及衬套之间形成密封腔,螺杆每转动一周便由进口向出口移出一个密封腔,即一个密封腔的体积的液体被排出去。理想状态下,泵内部无泄漏,那么泵的流量与转速成正比。即: Qth=n*q n----转速; q----理论排量,即泵每转一周所排出的液体体积; Qth----理论排量。 1.2 压力△P的影响: 泵实际工作过程中,其内部存在泄漏,也称滑移量。由于泵的密封腔有一定的间隙,且密封腔前、后存在压差△P,因此,有一部分液体回流,即存在泄漏,泄漏量用△Q表示,则 Q=Qth-△Q 显而易见,随着密封腔前、后压差△P升高,泄漏量△Q逐渐增大。对于不同型式和结构,影响大小也各不相同。 1.3 粘度v的影响: 试想:将清水和粘稠的浆糊以相同的体积从漏斗式的容器中泄漏出去。显然水比浆糊要泄漏得快。同理,对于双螺杆泵,粘度大的流体比粘度小的液体的泄漏要小,泄漏量与介质粘度有一定的比例关系。 综上所述,要综合地考虑以上各种因素,通过一系列的计算才能精确地知道泵的实际流量是否符合工况要求。 2.压力△P: 与离心泵不同,双螺杆泵的工作压力△P由出口负载决定,即出口阻力来决定。出口阻力与泵的出口处的压力是匹配的,出口阻力越大,工作压力也越大。若想知道压力,则需要用流体力学的知识对出口阻力精确的计算。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条
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