Pressure surge in gas pipe line
Pressure surge in gas pipe line
(OP)
Hello,
Have any of you seen calculations for predicting pressure surges in gas pipelines. Known are operating pressure, temp, flow coefficient of valve, time it takes to close valve, etc. What I need to know is what pressure spike is probable with sudden closure of valve (2-8 seconds.
Have any of you seen calculations for predicting pressure surges in gas pipelines. Known are operating pressure, temp, flow coefficient of valve, time it takes to close valve, etc. What I need to know is what pressure spike is probable with sudden closure of valve (2-8 seconds.





RE: Pressure surge in gas pipe line
I've not heard of surge relief facilities on gas pipelines similar to those provided at times for liquid pipelines.
The company I know who does gas analyses is Stoner Associates out of Houston (they may be using another name, not sure) but it was used primarily by gas pipeline companies to manage line pack during increases/decreases in supply/demand.
RE: Pressure surge in gas pipe line
RE: Pressure surge in gas pipe line
A similar problem may exist for long ( 50 mile) compressed natural gas pipelines ( at 900-1200 psig) if a check valve or overpressure stop valve closes ( codes require closure in less than 1 sec)
RE: Pressure surge in gas pipe line
It is the same problem with different gas properties. Do you know what equations the power generation industry uses to calculate this surge pressure? Is it in B31.1? Any source you can point me towards will be appreciate.
Thanks