Method and device for preventing fires or to prevent explosions or unwanted reactions taking place upon air coming into contact with goods placed in a delimited volume, especially of fuel to be transported in tank semitrailer or silo trains or of chemical products to be transported

摘要

In order to prevent fires or explosions or to prevent unwanted reactions taking place upon air coming into contact with goods placed in a delimited volume such as, for example, when transporting fuel or chemical products in tank semitrailer trains or in silo trains, a protective gas atmosphere is generated and/or maintained above the goods placed in the delimited volume by there being generated, for example prior to filling the tank, a cushion of nitrogen which floats on the fuel when it is fed in and which displaces the air from the tank in the manner of a piston. Alternatively, it is possible to introduce nitrogen after the fuel or another material has been fed in and to form a nitrogen layer which shields the material from the air. The device has at least one reservoir containing protective gas, at least one connection line leading from the protective gas reservoir to the delimited volume for supplying protective gas into the delimited volume and a valve disposed in the connection line for enabling the supply of the protective gas.