DE1551026A1 - Pipe lining for prismatic combustion chambers - Google Patents

Description

Carbide dissipation
Gtsdlschalt

m. b. H.

Stuttgart

2nd February 1966

Pipe lining for prismatic combustion chambers

The invention relates to a pipe lining for prismatic combustion chambers with a funnel arranged in the lower area, in which the combustion chamber tubes are combined into tube strips connected in parallel, vertically or horizontally are led back and forth and in which the external closure is directly arranged behind the pipes and formed on these adjacent sheet metal jacket.

Such pipe linings are used in forced circulation and once-through boilers used because it is important for the safe and economical operation of this boiler the use of masonry-free, gas-tight walls has proven to be beneficial. In the case of pipe bands that are moved back and forth, however, difficulties arise at the reversals with the sheet metal jacket, since larger gaps cannot be avoided even with narrow pipe spacing, especially if the inversions are not right-angled run, as is the case with the tube bands of tapering combustion chamber walls in the funnel area. The one behind these spaces The sheet metal jacket is then exposed to such strong heat radiation that it is exposed to of time is destroyed.

The often chosen way to protect the sheet metal jacket in the area of the bends Pipes to weld fins to the pipes and thus the sheet metal frame of the heat radiation to withdraw, cannot be trodden at the aforementioned turning points, because the areas to be covered are so large that even the fins of the fins Radiated heat is no longer dissipated quickly enough into the pipes.

The invention is now based on the object of the pipe lining in the area of To train reversals of the pipe bands so that the sheet metal jacket behind it is adequately protected against heat radiation. For this purpose the pipe bands, which are used to line the combustion chamber walls, which taper in accordance with the funnel incline, are bent at their joint with the funnel inclined walls and the inversions of these pipe bands are laid behind the pipe bands of the adjacent walls, the inversions of which run within the plane of the walls.

9 09 8 83/0238

-I-

KohUnichtldungi
Gts «Nschaft

KSG 949 Stuttgart

The spaces between the return bends of the individual pipes and the pipe bands will be in this way always covered by the pipes of the adjacent wall. An unacceptable one Heat radiation on the sheet metal jacket is therefore switched off and thus an essential prerequisite for safe boiler operation has been created.

Further details of the invention are in the drawing and the relevant drawings Description explained using an exemplary embodiment.

It show the

1: a vertical section through the funnel of a forced-flow kettle along the line 1-1 in FIG. 2;

Fig. 2: a plan view of the funnel.

The tube-lined combustion chamber 1 is down through the wedge-shaped Hopper 2 completed. The sheet metal jacket 3 is located directly behind the pipe lining and closes the combustion chamber from the outside. In the plane of the funnel sloping walls 4 are the lower reversals 5 of the tube bands 6, which continue above the funnel in the combustion chamber walls. The reversals 8 of the pipe bands 9, which is used to cover the vertical, corresponding to the funnel slope serve tapering funnel walls, are under the pipe bands β of the funnel sloping walls 4 laid.

BAD ORIGINAL 909883/0238

Claims (1)

Claim Pipe lining for prlaaatlache Brennkaaaern old arranged in the lower area « Funnel, in which the Brennkaaerrohre Su pipe countries connected in parallel in groups «Ma — landed, banking law or horizontally back and forth and in which the ventilated closure is arranged directly behind the pipes uod is formed on this adjoining sheet metal jacket, characterized in that daA 41 · KohrbMnder, which are also the lining, correspond to the height of the funnel ▼ erjUngendeη BrennkesaervMnde serve, at their stoOatelle old the funnel-shaped bodies bent and the provision of the tube strips behind the tube strips of the walked-on winds relocated aiad, their observations within the plane of the winds get lost. 0 9 8 8 3/0238 BAD ORfGJNAL Blank page