Device for leakage detection and leakage location
A device for identifying and locating leaks has a permeable collecting line, a pump provided for pumping a transport medium through the line, and at least one sensor for detecting a substance that escapes in the event of a leakage. There are provided sources of a detectable gas, which, as way-points, are located at a distance from one another at known locations along the collecting line. A sensor for detecting the gas is spatially assigned to each sensor that is provided for detecting the escaping substance.
1. A device for leakage detection and leakage location, comprising:
a permeable collecting line;
a pump communicating with said collecting line for transporting a transport medium through said collecting line;
at least one first sensor assigned to said collecting line for detecting a substance emerging in the event of a leak;
a plurality of sources generating a detectable gas, said plurality of sources being assigned to said collecting line and forming waymarks at predetermined points and at a spacing distance from one another; and
a second sensor for the detectable gas assigned in spatial terms to said first sensor for the emerging substance to be detected.
2. The device according to claim 1 , wherein said sources provide a gas not corresponding to the substance to be detected and emerging in the event of a leak.
3. The device according to claim 2 , wherein the detectable gas is hydrogen.
4. The device according to claim 1 , wherein said first sensor for the emerging substance is insensitive to the detectable gas.
5. The device according to claim 4 , which comprises a catalytic converter for converting hydrogen into water disposed upstream of said first sensor for the emerging substance.
6. The device according to claim 1 , wherein said sources are sacrificial anodes disposed on a pipeline adjacent said collecting line.
7. The device according to claim 6 , wherein said sources include metal bodies formed of a more precious metal than said sacrificial anodes and electrically connected to said sacrificial anodes.
8. The device according to claim 1 , wherein said pump is connected as a pressure pump at a start of said collecting line.
9. The device according to claim 1 , which further comprises an evaluation unit at an end of said collecting line, and wherein said first and second sensors are disposed in a plurality of mutually spaced-apart sensor units assigned to said collecting line and detecting the emerging substance and the gas, and an electrical supply and measurement line connects all of said sensor units to said evaluation unit.
10. The device according to claim 9 , wherein each said sensor unit includes a first sensor for the emerging substance and a second sensor for the detectable gas.