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Why does a long plunger pump stop working?

Time:2018-08-16   Clicks: Loading ...

Why does a long plunger pump stop working?
           The scale of the plunger and pump cylinder of the long plunger pump: If the injected water is not recycled, and some oil fields have not been able to meet the increase in the recovery rate of pure water, the injection of polymers has become more and more complicated, and the degree of mineralization has become higher and higher. The likelihood of scaling on plungers and pumps is increasing. When the deposition of scale on the plunger and pump surface becomes dense and the adhesion becomes stronger, the hazard increases. In some areas, the normal piston pump picking cycle has been reduced from 300 days to 30 days due to scaling.
           Structure of the pumping pump: The ordinary pumping pump has no sand scratch measures in the structure, and there is a cone surface at the end of the plunger. During the reciprocating movement of the pumping pump, the sand grains are directly settled into the gap between the plunger and the pump., Moreover, the sand prevention tank on the pump plunger only has sand protection and sand scraping performance. The treatment of sand in the sand prevention tank is not considered. After the sand prevention tank deposits sand, it will also cause the plug pump tube to wear.
           Surface treatment and material selection of plunger and pump: The investigation shows that the selection of plunger and pump surface treatment process and material can significantly change the service life of pump. The plunger and pump tube are a pair of friction pairs. Some studies have shown that the friction coefficient between the plunger and the pump surface material and the sand grain will also affect whether the sand grain will be stuck in the plunger and pump barrel gap.
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