The top cover of a tin can generally adopts a suspended flat top fully sealed structure, which is used for sealing, lifting, and installing electric heating elements and pressure measuring elements to protect gas pipelines.

The top cover of a tin can generally adopts a suspended flat top fully sealed structure, which is used for sealing, lifting, and installing electric heating elements and pressure measuring elements to protect gas pipelines.

The outer shell of the top cover is a steel cover, mainly used for sealing. The space between the top cover and the steel cover is formed and divided into high, medium, and low temperature sections, with protective gas entering from the top of the steel cover. Preheat in this space, and then enter the tank through the combination bricks between the top covers. On the one hand, the combination bricks can be protected by gas, and on the other hand, the electric heating leads of the tank are led out from the combination bricks. The top cover of the iron groove is equipped with holes for protective gas inlet, power line inlet, temperature and pressure measuring elements, etc. It is required that the material has good thermal vibration performance and is not easily damaged or peeled off.

Fire resistant reinforced concrete roof

Reinforcing bars are installed in the precast refractory concrete blocks, and heat-resistant steel hooks are buried on the lower surface to support the electric heating wire ceramic tubes. The ceramic tubes can be arranged horizontally or longitudinally along the tin bath; The upper surface of the top cover has exposed bolt heads. In order to fix the hanging of the top cover, the other end of these exposed bolt heads is arc-shaped, pre embedded, and the hooked part should be the main reinforcement. The refractory concrete roof adopts three-phase silicon carbon rods, and there is no need to embed ceramic pipe hooks on the lower surface. Three phase silicon carbon rods are installed between the two rows of roofs.

Refractory brick roof

The roof is assembled from many small refractory bricks. Among these bricks, beam bricks are load-bearing and are usually suspended on sealing covers using heat-resistant steel components; Bridge bricks are basically non load bearing and are placed on top of two rows of beam bricks; Place it in the gap between the beam bricks and bridge bricks, supported by roof bricks or silicon carbide rods.