A、定子A, stator定子是螺杆泵的一个关键部件,并直接影响到井下机组的寿命。定子制造质量越高,井下机组的寿命就越长。定子的作用就是提供转子工作和液体抽汲的螺旋腔,其结构非常简单,由钢制外壳和塑料/橡胶衬套内腔有双螺旋、三螺旋、四螺旋甚至五螺旋、六螺旋,在相同尺寸下,螺旋数越多,泵的排量越高。The stator is a key component of the screw pump, which directly affects the life of the downhole unit. The higher the quality of the stator, the longer the life of the downhole unit. The role is to provide a rotor stator and liquid pumping spiral c***ity drain, the structure is very simple, a steel shell and a plastic / rubber bushing c***ity with double helix, three helix, four or even five, six spiral helical spiral, in the same size, the number of spiral, the displacement of the pump is high.

F、抽油杆F, sucker rod所使用的抽油杆是常用的普通抽油杆、空心抽油杆和连续抽油杆,可根据油井确定。The sucker rod used is commonly used as a common 1sucker rod, hollow sucker rod and continuous sucker rod, which can be determined according to the oil well.G、定子扶正器G, stator centralizer定子扶正器为有一定弹性的笼形装罩,每一对由两半构成,中间大、两端小。作用是使定子居中和减小定子的摆动。The stator centralizer is a cage shaped cover with a certain elasticity. Each pair is made up of two halves, large in the middle and ***all at both ends. The function is to make the stator middle and reduce the stator wobble.H、锚定装置H, anchoring device对于没有封隔器的井和泵挂深度浅的井,用于固定定子、消除摆动和防止定子脱扣。采用普通的锚定装置即可。For wells without packers and shallow wells with deep pumps, it is used to fix the stator, eliminate the swinging and prevent the tripping of the stator. A common anchoring device can be used.
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。

由于吸液管道或者轴封的地方有泄漏会导致空气被吸入到单螺杆泵里面,这样单螺杆泵就会处于吸空气的状态,进口管道不能形成负压所以螺杆泵吸不上液体。处理方法是检查、修理管道,排除杂物,调整更换轴封。 单螺杆泵电机反转也会导致螺杆泵吸不上液体的现象出现,调整电机的极性接头就可以了。 抽吸的矿浆太干,或在半干状态下运转也是螺杆泵吸不上液体的原因,这种情况只能稀释或向进料口加入充足的矿浆。 输送的液体粘度太高也会导致螺杆泵吸不上液体,如果是液体粘度太高的问题只能降低螺杆泵的转速然后提高液体的温度后使其粘度降低或者改用立式螺杆泵。