CPC G01M 3/205 (2013.01) [G01M 3/226 (2013.01)] | 18 Claims |
1. A leak detection device for detecting a leak in a test zone of a sealing membrane of a sealed and thermally insulating tank, the leak detection device comprising:
a portable leak detection bell-like member, the leak detection bell-like member comprising a main body which is configured to be placed above the test zone and a sealing joint which is connected to the main body and which is configured to define a detection chamber between the main body and the test zone, the sealing joint being configured to come into contact with the sealing membrane and having a closed contour which surrounds the detection chamber, the detection bell-like member further comprising a carrying handle which is provided with a control member which can be manually activated to produce a control signal, the control member being positioned on or in the immediate vicinity of the carrying handle so as to be able to be activated by the hand of a user holding the carrying handle,
a gas suction circuit which is configured to connect the detection chamber to a vacuum pump, the gas suction circuit being provided with a controlled valve which can be switched into an open state to connect the detection chamber to the vacuum pump and a closed state to isolate the detection chamber from the vacuum pump, and
a control unit which is configured to switch the controlled valve in response to the control signal.
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