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單螺桿泵混輸流程設計時應注意的問題

　　 液相介質的連續供給問題
　　 單螺桿泵在油井原油生產中其生產狀態很不穩定，在一段時間內有可能氣體含量高，而另一段時間內液體含量高，所以在使用單螺桿泵做油氣混輸時，為了防止泵在輸送液體和氣體、混合液的過程中，有一段時間內液體斷流，造成定子因摩擦產生的熱量使定子橡膠溫度升高，橡膠老化，降低定子的使用壽命，介質在進入單螺桿泵腔時盡量使用原油中的液體與氣體均勻混合，保證液體介質對泵的連續供給。
    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、同時開動油田區塊中的多口油井，讓油井的油氣相互補充，使進入單螺桿泵的介質盡量均勻。
   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、單螺桿泵前管路中增設緩沖罐，在緩沖罐里儲存一定量的原油，并用一套限流裝置給混輸泵供給一定量的原油。這樣無論油井含氣量如何變動，都可保證最低進液率，使混輸泵能夠正常工作。在輸油管路上增設的限流裝置，其流量應為混輸泵流量1/20的定量泵，用單螺桿泵效果會更好，使用時間應同時控制啟停。
   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、泵后管路中增設回油罐，用限流裝置把罐中的部分液體反回到混輸泵入口，保證進泵油氣的進液率，使混輸泵能夠正常工作。限流裝置可用節流閥控制流量，也可用單螺桿泵控制流量。本方案因回流部分液體，會降低系統效率。  
    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.

技術支持:
螺桿泵技術支持一
螺桿泵技術支持二
螺桿泵技術支持三
螺桿泵技術支持四