| 摘要 |
A protection system arranged to prevent a large trans-membrane pressure difference over a pressure sensitive membrane (4) fitted in a pressure resistant chamber (3), where the membrane forms a physical barrier between a liquid and a gas mixture carried through the chamber (3), said protection system comprises two shut-off valves (9, 10) provided in the liquid inlet an d outlet lines respectively, a buffer tank (2) provided in the line between on e of the shut-off valves (9, 10) and the pressure resistant chamber (3), a pressure equalising valve (12) provided between the gas inlet line (8) and t he buffer tank (2) and a pressure sensing valve (14) for measuring the pressure difference over the membrane (4) and which activates the shut-off valves (9, 10) once this pressure difference exceeds a predetermined value.
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