管柱脱落的故障现象是:运行电流很低,基本上是电机的空载电流,除了有一股一股的气外,井口基本上无产液,正发循环时油套连通。The failure phenomenon of the string is: the running current is very low, basically the motor's no load current. Besides the gas w
莫诺螺杆泵配件
管柱脱落的故障现象是:运行电流很低,基本上是电机的空载电流,除了有一股一股的气外,井口基本上无产液,正发循环时油套连通。The failure phenomenon of the string is: the running current is very low, basically the motor's no load current. Besides the gas with a single strand of gas, the wellhead basically has no liquid production, and the oil sleeve is connected when circulating.减少管柱脱落的措施有:将油管上扣扭矩由原来的值提高到值;采用油管螺纹垫片;定子上的装卸短节采用防松螺纹连接;采用油管锚或张力封隔器固定螺杆泵。The measures to reduce the falling off of the pipe string are as follows: increase the torque from the original value to the maximum value; use the oil pipe screw gasket; the loading and unloading joint on the stator is connected by loosening screw thread; and use the oil pipe anchor or tension packer to fix the screw pump.

定转子过早磨损Premature wear of fixed rotor定转子过早磨损主要是由于定转子的间隙过小引起的。The premature wear of the fixed rotor is mainly caused by the small gap between the fixed rotor and the rotor.油管与抽油杆柱磨损Oil pipe and rod string wear油管与抽油杆柱磨损的原因一是因为井斜抽油杆贴在油管壁上引起的,可以通过加抽油杆扶正器使抽油杆柱居中来减轻或消除,另一个原因是定转子不同心及转子的偏心运动造成的,在定子以上加一节内径较大的回转筒即可避免。Tubing and sucker rod wear reason is because the deviation of sucker rod attached to the tubing wall caused by heating, pumping rod centralizer make the rod center to reduce or eliminate, another reason is caused by the eccentric motion of the rotor and the rotor are not concentric, avoid a day the diameter of rotary cylinder in the stator can be larger than.
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。

单螺杆泵工作时,两端分别作用着液体的吸排压力,因此对螺杆要产生轴向推力。螺杆泵厂家建议对于压差小于10千克力/cm2的小型泵,可以采用止推轴承。此外,还通过主动螺杆的油孔将高压油引入各螺杆轴套的底部,从而在螺杆下端产生一个与轴向推力方向相反的平衡推力。
单螺杆泵和其它容积泵一样,当泵的排出口完全封闭时,泵内的压力就会上升到使泵损坏或使电动机过载的危险程度。所以,螺杆泵厂家建议使用时在泵的吸排口处,就必须设置安全阀。

(作者: 来源:)