当泵首次启动时，齿轮的旋转迫使空气离开壳体进入排油管。
When the pump is first started, rotation of gears forces air out the casing and into the discharge pipe.
在重点分析现场采用的两种连续油管携氮气排液工艺方法及特点的基础上，提出了连续油管携氮气排液优化设计流程。
By analyzing two methods of liquid drainage technology widely adopted in the field, we put forward the optimization design process of liquid drainage with nitrogen by coiled tubing in this paper.
该项工艺省去原机械举升中的油管，利用空心杆作为传动介质和油流通道，下冲程挤压排液。
This technique eliminates the tube in conventional mechanical lifting, takes hollow rod as the transmission medium and oil flow channel and discharges fluid during down stroke.
因此，必须做好电气设备的保护接地和输油管线等设施及人体的排静电接地，并且要认真地进行检查和维护。
Therefore, it is important to guarantee the grounding of electric equipment and electrostatic grounding of human body, while taking regular check and maintenance seriously.
在出油管路上装有一个单向阀。本吸油器的优点是结构简单、排吸快、使用方便、成本低。
A one-way valve is installed on the oil outlet pipe, and the utility model has the advantages of simple structure, rapid discharge and suction, convenient operation and low cost.
在出油管路上装有一个单向阀。本吸油器的优点是结构简单、排吸快、使用方便、成本低。
A one-way valve is installed on the oil outlet pipe, and the utility model has the advantages of simple structure, rapid discharge and suction, convenient operation and low cost.
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