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。
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。
For screw pump well, the following accidents, such as rod breaking, wax locking and pump burning, always happened.
螺杆泵井运行过程中经常出现杆柱断脱、蜡卡、烧泵等现象。
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。
The performance of trapeziform labyrinth screw pump was investigated by changing geometric parameters of trapeziform screw.
分析了梯形螺纹几何参数对迷宫泵性能的影响。
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。
In the light of the frequent breakdown and badly lifting efficient of using conventional screw pump recovering viscous crude.
开采较高粘度的稠油，常规螺杆泵往往表现出故障率高、举升效果差。
The sealing principle of sealing cavity in single thread twin screw pump is the same as that in double thread twin screw pump.
单头双螺杆泵与双头双螺杆泵密封腔的密封原理相同。
Slurry catalyst feed pump used in gas-phase flowing bed process of PE plant is a type of single screw pump with special structure.
聚乙烯装置流化床反应器浆液催化剂加料泵是一种结构特殊的单螺杆泵。
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。
In the light of the problems with artificial lifting by screw pumps, Model QYLB800-24C-DQ001 electric submersible screw pump is developed.
针对螺杆泵举升技术存在的问题，开发研制了一种QYLB800 - 24c—d Q001型电动潜油螺杆泵。
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。
Active water or light oil is sent downhole through hollow rod to reduce oil flow resistance, thus producing heavy oil from deep formation through screw pump.
利用空心杆向井筒内掺入活性水或稀油，降低油流阻力，实现应用螺杆泵开采深层稠油。
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。
And single screw pump in the pump itself cannot set the relief valve, can only be set up in line, increase the investment of equipment cost and installation cost.
而单螺杆泵在泵本身不能设置安全阀，只能在管路中设置，提高了设备投入成本和安装成本。
By taking 135 three-screw pump as an example, the geometric parameter design, the forming of spiral surface and the characteristic of screw gearing are investigated.
以135型三螺杆泵为例，对螺杆几何参数设计、螺旋型面的形成、螺杆啮合特性进行了探讨。
Stable coal transportation and kiln thermal condition is achieved by increasing primary air rate, improving inventory and modifying screw clearance of the screw pump.
通过采取提高一次风风量、控制合理库存、改造螺旋间隙等措施，达到了稳定煤粉输送量的目的，稳定了窑内热工制度。
The theories established in this paper give directions to the current design and produce of the three screw pump; and also give solutions of the problems during usage.
本文的基础理论研究对当前的螺杆泵的设计生产都有很好的指导作用，对当前三螺杆泵使用中出现的问题有很好的解决效果。
There is no internal scale product of dry screw pump owing to the late research starting, so like products are all depend on importing and the price is very expensive.
由于国内螺杆干泵的研究起步较晚，目前还没有规模化的产品，同类产品全部依靠进口，价格十分昂贵。
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