Some oil sources are deeper, and some oil sources have a flatter outer surface, ignoring the allowable suction of the hot oil pump, resulting in less oil absorption or no oil absorption at all. It is necessary to know that the vacuum that can be established at the suction port of the hot oil pump is limited. The absolute vacuum suction stroke is about 10 meters high, and the hot oil pump cannot establish an absolute vacuum. Moreover, the degree of vacuum is too large, which tends to cause oil and gas in the pump, which is unfavorable for the operation of the hot oil pump. Therefore, each hot oil pump has its maximum allowable suction stroke, generally between 3-8.5 meters. When installing the hot oil pump, it must not be simple and simple.
The resistance loss in the oil inlet and outlet pipes is too large. Some users have measured that although the vertical distance between the oil storage tank or the oil tower to the oil source oil surface is slightly smaller than that of the hot oil pump head, the oil extraction amount is small or oil is not lifted. The reason is often that the pipeline is too long, there are many bends in the tubing, and the resistance loss of the oil flow in the pipeline is too large. The reason is often that the pipeline is too long, there are many bends in the tubing, and the resistance loss of the oil flow in the pipeline is too large. Under normal circumstances, the 90 degree bend is more resistant than the 120 degree bend, and the loss of each 90 degree bend is about 0.5-1 meters. The resistance of each 20 meter pipeline can cause the head loss to be about 1 meter. In addition, some users are also free to pump the diameter of the hot oil pump into and out of the pipe, which also has a certain impact on the lift.
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Label: hot oil pump suction too large cause
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