螺杆与泵体紧密贴合。
The sealing principles of the twin screw pump are analyzed.
分析了双头双螺杆泵密封腔的密封原理。
It's necessary to investigate the theory of the three screw pump.
所以对三螺杆泵的理论研究是非常必要的。
The metal screw pump can resist this badness response effectively.
金属螺杆泵能有效抵制这些不良反应。
The method of electrical heating screw pump production is developed.
为此，提出了电热杆螺杆泵采油方法。
The main aim in this paper is the basic theory of the three screw pump.
于是在研究中主要是对三螺杆泵做基础理论的研究。
Screw pump features: the loss of small screw pump, good economic performance.
螺杆泵特点为：螺杆泵损失小，经济性能好。
Double screw pump is a kind of double suction not airtight double screw pump.
双螺杆泵为一种双吸式非密闭的双螺杆泵。
Because of higher system efficiencys, more attention has been paid to screw pump.
井下采油螺杆泵因具有较高的系统效率而日益受到重视。
Screw pump selection should follow the economy, reasonable and reliable principle.
螺杆泵选用应遵循经济、合理、可靠的原则。
Working with external bearing structure of the double screw pump bearings are separated.
外置轴承结构的双螺杆泵工作腔同轴承是分开的。
The twin screw pump is of the properties of less leakage, big displacement and effectivity.
双头螺杆泵比单头螺杆泵工作腔室多，泄漏少，泵的排量大，效率高。
The conclusions of the study are helpful to the design and manufacture of single-screw pump.
本文的结论对单螺杆油气混输泵的设计制造和科学研究都具有一定的参考价值。
Based on this, we may make improvement to prolong the life of screw drill tool and screw pump.
这一观点，有可能使螺杆钻具与螺杆泵的寿命短的现状有所改善。
These research results possess a certain reference value to the design and application of the screw pump.
这些研究结果对地面驱动螺杆泵的设计及应用有一定参考价值。
Therefore, the research and experiment of high temperature resistance rubber screw pump have been conducted.
针对这一问题，开展了耐高温橡胶螺杆泵的研究与试验。
A data acquisition system, which designed for screw pump performance parameter testing, was developed in this paper.
开发了一种用于螺杆泵性能参数试验的数据采集及处理系统。
As long as the selection of appropriate, to maintain a rational, three-screw pump can ensure satisfactory operation.
只要选型得当，维护合理，三螺杆泵就可保证令人满意的运行。
Analysis screw pump system, get the mechanical model of rod string, deduct and calculate undertaking load of rod string.
通过对螺杆泵采油系统进行分析，得到抽油杆柱力学模型，并对杆柱所承受载荷进行推导计算。
According to the energy loss of every part of screw pump well, established system efficiency analysis model for the well.
根据螺杆泵井各个部分运动特点及能量损失情况，建立了螺杆泵井系统效率分析模型。
Research and field application indicates that the system has provided more broad room for the application of the screw pump.
研究及现场应用表明，该系统为螺杆泵的应用提供了更广阔的空间。
And centrifugal pumps compared with single-screw pump do not need to install the valve, while the linear flow of traffic is stable.
和离心泵相比，单螺杆泵不需要装阀门，而流量是稳定的线性流动。
Double screw pump as a positive displacement pump, the pump suction chamber should be closely separated and discharge chamber inside.
双螺杆泵作为一种容积式泵，泵内吸入室应与排出室严密地隔开。
The analysis results provide the necessary bases which are benefited for the design and improvement of new screw pump synchronous gear.
计算分析结果为新型螺杆泵同步齿轮的设计和改进提供了必要的依据。
Double screw pump series products are divided into single suction of two kinds of double screw pump and double suction double screw pump.
双螺杆泵系列产品分为单吸双螺杆泵和双吸双螺杆泵两大类。
With the piston pump, diaphragm and gear pumps is different is that single-screw pump can be used for pharmaceutical filling and measurement.
与柱塞泵、单螺杆泵及齿轮泵不同的是，单螺杆泵可用于药剂填充和计量。
Against the status, PM brushless torque motor to drive screw pump directly was adopted by the paper, and the correlative problem was studied.
针对这种情况，本文采用永磁无刷力矩电机直接驱动螺杆泵，并对其相关问题进行了研究。
In order to avoid screw pump is damaged, usually installed in the screw pump bypass relief valve outlet to a stable outlet pressure, keep the pump running.
为了避免螺杆泵损坏，一般会在螺杆泵出口处安装旁通溢流阀，用以稳定出口压力，保持泵的正常运转。
Screw pump is a kind of rotary pump, when the outlet end is blocked, the pressure will gradually increase, so that more than a predetermined pressure value.
螺杆泵是一种容积式回转泵，当出口端受阻以后，压力会逐渐升高，以至于超过预定的压力值。
Field application demonstrates that the management level and economic efficiency of the screw pump production system would be improved by using the control chart.
现场应用表明，根据螺杆泵油井工况宏观控制图，可提高螺杆泵采油系统管理水平及经济效益。
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