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莫诺转子-
发布者：武汉螺耐斯环保设备有限公司 时间：2020-11-6
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 motors no load current. besides the gas with a single strand of gas, the wellhead basically has no liquid production,&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&unloading joint on the stator is connected by loosening screw thread;&use the oil pipe anchor/tension packer to fix the screw pump.
ｅ、抽油杆扶正器e, ---er 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 ---er rod centralizer is co-ed of the heart shaft&the upright cylinder, which is connected between the two ---er rods&is stuck between the two ---er rod hoops. the axis of the heart is also an extremely short rod short section. the ccting 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 ---er rod from touching the inner wall when it rotates,&it can also let the fluid pass through.
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。
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