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Abstract:
In order to study the effect of the structure diameter of the device piping, namely the by-pass pipe of pig receiving trap at the gas station on flow field, the distribution of flow field was simulated and analyzed in the pig receiving trap, and its internal pressure, flow velocity and turbulence kinetic energy changes were analyzed. Besides, the effect of by-pass pipe diameter changes on the flow field was also studied. The results show that the static pressure is four clear regional distributions in the interior of pig receiving trap, namely that the pressure within the main ball tube is maximum, and the pressure inside the small ball tube is second, and that of reducer is the smaller, and pressure of by-pass tube is minimum. Besides, there is obvious vortex at the entrance of by-pass pipe. With the increase of the by-pass pipe diameter, the pressure decreases, and the pressure change rate also decreases. In the interior of the by-pass pipe, with the increase of the diameter, both the velocity and turbulenc
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