2分鐘前 湖北莫諾信賴推薦「在線咨詢」[螺耐斯10e361c]內容:管柱脫落是自由式管柱結構經常發生的一種現象,這是由于正常運轉時轉子旋轉對定子產生的摩擦扭矩方向實際上是定子及油管的連接螺紋的卸扣方向,如果摩擦力矩大于油管扣的上扣扭矩,油管就脫扣。當尾管很重時,還會出現螺紋擄扣。當管柱脫落時,通過作業重新連接好就能恢復生產。如果未發生螺紋擄扣,可以采取對扣方式打撈,如果發生擄扣,必須下打撈工具進行打撈。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限位器為一個底部帶限位板和流通通道的短節,接在定子的尾部,其作用是施工作業時給轉子限位以防止下入過頭而失去作用和桿柱脫落時防止桿柱掉入井底。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 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.

1、單螺桿泵嚴禁在泵腔無液體的情況下空運轉,必須在啟動前由泵進口把液體注入泵體后再啟動螺桿泵,以免空轉磨損螺桿泵定子。
2、啟動單螺桿泵前還得必須先確定螺桿泵的運轉方向,螺桿泵不能反轉。
3、新安裝或長時間停泵數天后的單螺桿泵,不能立即起動,也應該向泵體注入適量潤滑劑或螺桿泵輸送的液體,再用管子鉗扳動螺桿泵幾轉后才可以起動。
4、不銹鋼螺桿泵輸送高粘度的液體或含有腐蝕性的介質后,應該用清水或者溶劑進行沖洗螺桿泵泵腔,防止堵塞以免造成下次起動螺桿泵時困難而損壞定子。
5、冬天使用單螺桿泵溫度偏低不使用時應該排除泵體積液,防止泵體凍裂或者泵內結冰下次起動時拉壞定子。
6、使用過程中軸承箱內應定期加潤滑油,發現軸端有滲流時,要及時處理或調換油封。
7、在運行中如發生異常情況,應立即停泵檢查原因,排除故障。

單螺桿泵工作時,兩端分別作用著液體的吸排壓力,因此對螺桿要產生軸向推力。螺桿泵廠家建議對于壓差小于10千克力/cm2的小型泵,可以采用止推軸承。此外,還通過主動螺桿的中央油孔將高壓油引入各螺桿軸套的底部,從而在螺桿下端產生一個與軸向推力方向相反的平衡推力。
單螺桿泵和其它容積泵一樣,當泵的排出口完全封閉時,泵內的壓力就會上升到使泵損壞或使電動機過載的危險程度。所以,螺桿泵廠家建議使用時在泵的吸排口處,就必須設置安全閥。
