2分钟前 湖北莫诺信赖推荐「在线咨询」[螺耐斯10e361c]内容:管柱脱落是自由式管柱结构经常发生的一种现象,这是由于正常运转时转子旋转对定子产生的摩擦扭矩方向实际上是定子及油管的连接螺纹的卸扣方向,如果摩擦力矩大于油管扣的上扣扭矩,油管就脱扣。当尾管很重时,还会出现螺纹掳扣。当管柱脱落时,通过作业重新连接好就能恢复生产。如果未发生螺纹掳扣,可以采取对扣方式打捞,如果发生掳扣,必须下打捞工具进行打捞。Column shedding is a common phenomenon of free tube structure, which is due to the direction of rotation of the friction torque generated by the stator rotor during normal operation is actually a stator and tubing connection1 screw shackle direction, if the friction torque is greater than the pipe le on torque, oil pipe tripping. When the tail pipe is very heavy, there will also be a thread caption. When the pipe column falls off, the production can be restored by reco
nnecting the work. If the le is not threaded, it can be salvaged by the way of the le. If the le occurs, the fishing tool must be salvaged.
D、限位器D, 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 co
nnected to the tail of the stator. Its function is to limit the rotor to the rotor during ctruction1, so as to pvent it from falling into the overhead and lose its function and pvent the rod from falling into the bottom when the rod string falls off.
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,还通过主动螺杆的中央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。