Explosion-proof heat tracing device and method for combustible medium pipeline

The invention discloses an anti-explosion heat tracing device and method for a combustible medium pipeline. The anti-explosion heat tracing device comprises a heat preservation layer, an electric heat tracing protection sleeve, an electric heat tracing cable, an electric contact pressure gauge and a nitrogen supply unit. The heat preservation layer is located on the outer layer of the combustible medium pipeline and used for preventing heat loss. The electric heat tracing protection sleeve is arranged below the combustible medium pipeline side; the electric heat tracing cable is installed in the electric heat tracing protection sleeve. And the nitrogen supply unit and the electric contact pressure gauge are respectively connected with the electric heat tracing protective sleeve. According to the method, construction is convenient, maintenance is easy, energy consumption is low, and meanwhile the potential safety hazard of combustible medium pipeline combustion explosion caused by electric tracing electric lea