1、单螺杆泵严禁在泵腔无液体的情况下空运转，必须在启动前由泵进口把液体注入泵体后再启动螺杆泵，以免空转磨损螺杆泵定子。

　　2、启动单螺杆泵前还得必须先确定螺杆泵的运转方向，螺杆泵不能反转。

　　3、新安装或长时间停泵数天后的单螺杆泵，不能立即起动，也应该向泵体注入适量润滑剂或螺杆泵输送的液体，再用管子钳扳动螺杆泵几转后才可以起动。

　　4、不锈钢螺杆泵输送高粘度的液体或含有腐蚀性的介质后，应该用清水或者溶剂进行冲洗螺杆泵泵腔，防止堵塞以免造成下次起动螺杆泵时困难而损坏定子。

　　5、冬天使用单螺杆泵温度偏低不使用时应该排除泵体积液，防止泵体冻裂或者泵内结冰下次起动时拉坏定子。

　　6、使用过程中轴承箱内应定期加润滑油，发现轴端有渗流时，要及时处理或调换油封。

　　7、在运行中如发生异常情况，应立即停泵检查原因，排除故障。

Ｄ、限位器D，莫诺定子， limiting device限位器为一个底部带限位板和流通通道的短节，接在定子的尾部，其作用是施工作业时给转子限位以防止下入过头而失去作用和杆柱脱落时防止杆柱掉入井底。The limiting device is a short section with bottom limit plate and distribution channel， which is connected to the tail of the stator. Its function is to limit the rotor to the rotor during ctruction1， so as to prevent it from falling into the overhead and lose its function and prevent the rod from falling into the bottom when the rod string falls off.



Ｅ、抽油杆扶正器E， sucker rod centralizer抽油杆扶正器由心轴和扶正筒组成，它接在两根抽油杆之间，被卡在两个抽油杆接箍之间。心轴也就是一要极短的抽油杆短节。扶正筒是一个内孔比心轴大１ＭＭ左右的空心塑料筒，外部有四个略比油管内径小的扶正翼，采取浇注成型。扶正筒可以围绕心轴转动，防止抽油杆旋转时与内壁接触而磨蚀油管，又可以让流体通过。The sucker rod centralizer is comed of the heart shaft and the upright cylinder， which is connected between the two sucker rods and is stuck between the two sucker rod hoops. The axis of the heart is also an extremely short rod short section. The centering cylinder is a hollow plastic tube inner hole Bixin shaft around 1MM， external four slightly smaller than the diameter of the tubing centralizer wing， adopt casting. The centralizer can revolve around the axis to prevent the sucker rod from touching the inner wall when it rotates， and it can also let the fluid pass through.



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