单螺杆泵混输流程设计时应注意的问题

　　 液相介质的连续供给问题
　　 单螺杆泵在油井原油生产中其生产状态很不稳定，在一段时间内有可能气体含量高，而另一段时间内液体含量高，所以在使用单螺杆泵做油气混输时，为了防止泵在输送液体和气体、混合液的过程中，有一段时间内液体断流，造成定子因摩擦产生的热量使定子橡胶温度升高，橡胶老化，降低定子的使用寿命，介质在进入单螺杆泵腔时尽量使用原油中的液体与气体均匀混合，保证液体介质对泵的连续供给。
    Single screw pump on process design should pay attention to the problemContinuous supply of liquid mediumSingle screw pump Wells in oil production in its production status is not very stable, in a period of time may be high gas content, and the other high liquid content over a period of time, so in the use of single screw pump for oil and gas are mixed to lose, in order to prevent the pump in the process of conveying liquid and gas, mixture, fluid flow, a period of time due to the stator because of the heat generated by the friction makes the temperature rise of stator rubber, rubber aging, reduce the service life of the stator, medium in the crude oil is used as far as possible when it enters the single screw pump cavity liquid and the gas mixing, ensure the liquid medium for the continuous supply of the pump.
　　 A、同时开动油田区块中的多口油井，让油井的油气相互补充，使进入单螺杆泵的介质尽量均匀。
   A, start the multi-port oil Wells in oil field blocks at the same time, let the well of oil and gas complement each other, make into the medium of the single screw pump as far as possible even.
　　 B、单螺杆泵前管路中增设缓冲罐，在缓冲罐里储存一定量的原油，并用一套限流装置给混输泵供给一定量的原油。这样无论油井含气量如何变动，都可保证最低进液率，使混输泵能够正常工作。在输油管路上增设的限流装置，其流量应为混输泵流量1/20的定量泵，用单螺杆泵效果会更好，使用时间应同时控制启停。
   B, single screw pump before adding buffer tank in pipeline, the buffering can store a certain amount of crude oil, and a current limiting device for mixture pumps supply a certain amount of crude oil.So no matter how well air content changes, can guarantee the lowest into liquid rate, make the mixture pumps can work normally.Adding a current limiting device in the pipeline on the road, the traffic should be 1/20 of the mixture pumps flow metering pump, with a single screw pump effect will be better, use control start-stop time should be at the same time.
　　 C、泵后管路中增设回油罐，用限流装置把罐中的部分液体反回到混输泵入口，保证进泵油气的进液率，使混输泵能够正常工作。限流装置可用节流阀控制流量，也可用单螺杆泵控制流量。本方案因回流部分液体，会降低系统效率。  
    C, pump pipe after add back into the tank, the tank with current limiting device reverse back part of the liquid mixture pumps entrance, guarantee to pump oil and gas into liquid rate, make the mixture pumps can work normally.Current limiting device available throttle control flow, also can use single screw pump flow control.This scheme for return part of the liquid, will reduce the efficiency of system.

技术支持:
螺杆泵技术支持一
螺杆泵技术支持二
螺杆泵技术支持三
螺杆泵技术支持四