Backstop separated into the line between paragraphs, to prevent backflow of oil uphill line

In the long steep uphill pipeline route , the general should be set valve , its role has three main points : 1. When accidents such as power outages caused by a sudden stop when the pump to prevent backflow of oil instantly , thereby reducing the pump water hammer danger ; 2 . After stopping in the pipeline transportation , only the back room that is separated off automatically truncated line static pressure to bear in order to reduce the bottom of the duct static pressure ; 3 . If the pipeline leak,  Instrument manifold  the back room will be separated into several lines to prevent backflow of oil uphill lines , thereby reducing leakage run oil losses. In the design of the line , we should also consider the non-return between the three roles , in addition to selection of appropriate size , reasonable structure , reliable quality, a limited number of non-return valve , but also deal with  Instrument valve  is installed correctly and reasonable design calculations . In order to ensure long steep uphill after the hydrostatic transmission line is not in stopping overpressure , according to the bearing capacity of the largest pipeline , oil and circuit  High pressure ball valve  shape , a simple calculation can determine the static pressure of the check valve separating position . But in order to minimize the leakage due to the pipeline to run oil loss , the location of the check valve design is not easy, there is a location where optimization problem that a long steep uphill complex how to properly set up the line a limited number of non-return valve , the pipe somewhere corruption occurs , leakage losses to a minimum.