| 摘要 |
A safety arrangement (12) for a DME fuel tank (10) of a vehicle (1), adapted to release an excessive pressure from the fuel tank (10), comprising a spring-loaded pressure release valve (15) adapted to open at a predefined pressure level, where the safety arrangement (12) further comprises a housing (13) mounted on the fuel tank (10) and having an outer opening (20) closed by a lid (17), where the pressure release valve (15) is arranged in the housing (13) and where the housing (13) is provided with an outlet pipe (14) having an outlet opening (19), and where the lid (17) is adapted to melt at a predefined temperature, thereby allowing gas to exit the pressure release valve (15) through the outer opening (20) of the housing (13) when the pressure release valve (15) is open and the lid (17) has melted. The advantage of the invention is that a small gas leakage caused by an excessive pressure is discharged downwards through the outlet pipe (14) and outlet opening (19) towards the ground, and that a large gas leakage, caused by e.g. a fire, is discharged outwards from the fuel tank (10), away from the fire. |
