초록 ▼

A method and improved apparatus for detecting leaks in pressurized pipeline systems, which compensate for the thermally induced volume changes of the liquid in the line during a test that are produced by both the nonlinear changes in the mean temperature of the liquid and the pressure-induced pertur

A method and improved apparatus for detecting leaks in pressurized pipeline systems, which compensate for the thermally induced volume changes of the liquid in the line during a test that are produced by both the nonlinear changes in the mean temperature of the liquid and the pressure-induced perturbations of the temperature of the liquid.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for detecting a leak in a pressurized pipeline system containing a liquid product by measuring the change in leakage flow rate, while compensating for thermally induced volume changes, comprising:(a) a storage container for storing product removed from or add

[ What is claimed is:] [1.] An apparatus for detecting a leak in a pressurized pipeline system containing a liquid product by measuring the change in leakage flow rate, while compensating for thermally induced volume changes, comprising:(a) a storage container for storing product removed from or added to the pipeline system;(b) measurement apparatus for measuring the volume of product in the storage container;(c) a pressure management ladder system including(i) a undirectional pump with a pump input and a pump output;(ii) at least one pump bypass for connecting the pump output to the pump input, the pump bypass including a pressure release valve which opens when the output pressure of the pump output exceeds a selected test pressure level; and(iii) a liquid product connection for connecting the pump input to the storage container; and(d) connection apparatus for connecting the pump output to the pipeline system.