CS209384B1 - Lining of tubular walls,especially for wall superheater of boilers - Google Patents

Description

(54) Pipe wall lining, especially for boiler wall superheaters

The invention relates to the lining of pipe walls, in particular for wall superheaters, where the free space between the pipes does not yet allow the use of new materials and corresponding mechanisms.

The lightweight wall superheated walls are still made according to the boiler type and output in the following two ways.

The anchor bolts are welded onto the boiler tubes, by means of which they are fastened to the wall of a fireclay plate with a thickness of 60 mm. A layer of diatomaceous earth and a gasket reinforced with wire mesh are then added to them.

It is also possible to enclose the walls, which are provided with horizontal steel brackets, in the fireclay masonry, to apply a layer of diatomaceous earth and to provide it with a sealing grease reinforced with wire mesh.

Both of these methods are very strenuous, exhibit low labor productivity and pose a significant risk to the health of workers. The use of lump building material excludes the possibility of using any mechanization means that would create the preconditions for shortening the period of periodic repairs of boilers.

These drawbacks are overcome by the wall lining of boiler boilers, in particular for the wall superheaters of boilers according to the invention, characterized in that at least every fifth wall pipe is provided with a mandrel perpendicular to the plane of the pipe wall on which mineral fiber boards are prepared. layer and insulation layer.

The mineral fiber boards are secured with mesh and self-locking clips.

· The insulating layer is covered with mesh and sealing gasket.

The layer of mesh panels allows the use of shotcreting machines for the application of the refractory construction layer, since in this case it serves not only as a formwork to prevent the casting of the refractory concrete into the boiler, but also as a suitable insulating material, substantially reducing heat losses by the lining. Dad, kick? At the same time, the structure significantly reduces the dustiness of the environment and thus reduces the possibility of silicosis.

An exemplary embodiment of the boiler wall lining of the boiler according to the invention is shown schematically in the attached drawing.

The boiler wall consists of vertical tubes 8, one in five of which is provided with a mandrel 1. On the array of tubes thus prepared 8, mineral fiber plates 2 with a layer of steel mesh 3 are fastened to the wall by self-locking clips 4. apply a first structural refractory layer 5 of refractory concrete and another heat-insulating layer of expanded refractory concrete or other insulating building material. This insulating layer 6 is covered by a steel mesh 9, attracted

Claims (3)

SUBJECT Pipe wall lining, in particular for boiler wall superheaters, characterized in that at least every fifth wall pipe (8) is provided with a mandrel (1) perpendicular to the plane of the pipe wall to which the mineral fiber plates (2) are attached, further a refractory layer (5) and an insulating layer (6). 1 in self-locking fasteners and provide a final sealing gasket 7. OF THE INVENTION Pipe wall lining according to Claim 1, characterized in that the mineral fiber plates (2) are secured with a mesh (3) and self-locking clips (4). Pipe wall lining according to Claims 1 and 2, characterized in that the insulating layer (6) is covered with a mesh (9) and a sealing gasket (7).