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螺杆泵和其它泵类相比,最大的优点是效率高、体积小、使用寿命长、许具有自吸性能,对输送介质不产生脉动或紊流,振动和噪音小。因而在液压传动、润滑油、燃料油和高分子化合物的输送中得到广泛应用。目前,长江沿岸各炼油厂油码头选的原油输送泵都是3SU160D-16双吸式三螺杆泵。该泵是沈阳水泵厂生产的,其工艺参数为:转速1470转/分,出口压力16公斤/厘米~2,吸入高度4.5米,流量270～290米~3/时,其啮合情况见图1。
Compared with other pumps, the biggest advantages of screw pumps are high efficiency, small volume, long service life, self-priming performance, no pulsation or turbulence on the transmission medium, low vibration and noise. Therefore, hydraulic transmission, lubricating oil, fuel oil and polymer compounds are widely used in the delivery. At present, the crude oil delivery pumps selected by the refineries and oil terminals along the Yangtze River are all 3SU160D-16 double-suction three-screw pumps. The pump is produced in Shenyang Pump Factory, the process parameters: speed 1470 rev / min, the outlet pressure of 16 kg / cm ~ 2, the inhalation height of 4.5 meters, the flow rate of 270 to 290 m ~ 3 / h, the engagement shown in Figure 1 .