Furnace cover upper water seal structure of resistance furnace

The utility model relates to a water seal structure on a furnace cover of a resistance furnace, which comprises a circle of water seal tank positioned on the outer side of the wall surface of a furnace body, the water seal tank comprises a circle of box-shaped beam, a circle of inner box plate and a circle of outer box plate, the inner box plate and the outer box plate are fixedly connected to the upper end surface of the box-shaped beam, and the inner box plate is attached to the wall surface of the furnace body. A transverse concrete beam is poured on the furnace body wall face, the box-shaped beam is supported on the concrete beam, a plurality of connecting assemblies are arranged between the inner box plate and the furnace body wall face, each connecting assembly comprises a connecting transverse plate and a connecting vertical plate, one end of each connecting transverse plate is fixedly connected with the inner box plate, and the other end of each connecting vertical plate is fixedly connected with the