RU2062952C1 - Cover of boiler rectangular gas duct - Google Patents

Abstract

FIELD: power engineering; cooling of converter gases. SUBSTANCE: cover of boiler gas duct has framework formed by dispensing and collecting headers 1 and 2 with bypass sections 3 and 4. Cooling water supply and discharge branch pipes 6 and 7 are connected to ends of header 2. Tubular cooling surface of ceiling 5 is made in form of flat multi-pass membrane panel of tubes interconnected by means of spacers and connected to headers 1 and 2 on side of partition 8 located inside collecting headers 2. Headers 1 and 2 adjoin each other in one corner of framework and their bypass sections are brought in communication. Blank overlaps cross-section of header 1 where it adjoins header 2. Branch pipes 6 and 7 are connected to water supply and discharge pipe lines by means of flexible hoses 11 and 12. EFFECT: enhanced reliability. 2 cl, 2 dwg

Description

 The invention relates to boiler building and can be used, for example, in boiler-coolers of converter gases.

Known lid of the rectangular gas duct of the boiler, comprising a frame frame formed by distributing and collecting manifolds with their bypass sections, a tubular cooling surface of the ceiling, connected to the distributing and collecting manifolds, cooling water supply and exhaust pipes and a plug [1]
The disadvantages of the known design are the significant consumption of water for cooling the lid due to the large number of cooling pipes, which increases operating costs, and the need to dismantle when repairing at least one of the connections of the inlet and outlet pipes with the corresponding pipelines.

 To eliminate these drawbacks, the known design is equipped with a partition, distributing and collecting collectors are placed adjacent to one another in one of the corners of the frame frame and the message of their bypass sections between them. At the same time, cooling water supply and exhaust pipes are connected to the ends of the collecting manifold, inside of which a partition is placed in the connection area of the water supply pipe, and a plug is installed with overlapping cross section of the distributing collector in the area adjacent to the collecting manifold. The tubular cooling surface is made in the form of a flat multi-way membrane panel, which is connected to the collecting and distributing collectors from the side of the partition facing the cooling water outlet pipe. The cover is equipped with cooling water inlet and outlet pipelines and flexible hoses, and through the latter, the pipelines are connected to the corresponding nozzles.

 In FIG. 1 shows a cover, a top view, in FIG. 2- section AA in FIG. 1.

 The lid of the rectangular gas duct of the boiler contains a frame frame formed by distributing 1 and collecting 2 collectors with their bypass 3 and 4 sections, a tubular cooling surface of the ceiling 5 connected to the distributing 1 and collecting 2 collectors, and cooling water supply pipe 6 and outlet 7. Distributing 1 and collecting 2 collectors are placed adjacent to one another in one of the corners of the frame frame and the message of their bypass 3 and 4 sections to each other. In this case, the branch pipes of the outlet 7 and the supply of cooling water 6 are connected to the ends of the collecting manifold 1, inside of which a partition 8 is placed in the connection area of the branch pipe 6 of the water supply. With the overlapping cross section of the distributing collector 2, a cap 9 is installed in the area adjacent to the collecting manifold 1. Tubular the cooling surface 5 is made in the form of a flat multi-way membrane panel of pipes 9, interconnected by spacers 10, and connected to the collecting 1 and distributing 2 collectors from the side of the partition 8, facing th to the discharge pipe 7 of the cooling water. The cover is provided with cooling water inlet and outlet pipelines (not shown in the drawing) connected to the pipes 6 and 7 by flexible hoses 11 and 12. The cover is tightly mounted on the ceiling of the duct inside the circuit of the collectors of the latter.

 During the operation of the boiler, the water cooling cap is forced through the hose 11 and pipe 6 to the collector 2 in front of the partition 8, then through the bypass sections 3 and 4 it enters the collector 1 and from it into the pipes 9 of the cooling surface 5. The water heated in the latter enters the collector 1 behind the partition 8 and through the pipe 7 and the hose 12 is discharged from it. Due to the multi-way movement of water in fewer pipes 9, water consumption is reduced with proper cooling of the ceiling.

 For preventive maintenance in the flue of the boiler, the lid rotates around the collector 2, allowing access to the flue. The presence of flexible hoses 11 and 12 allows you to rotate the cover without dismantling the connecting elements of the inlet and outlet pipelines.

Claims (2)

 1. The cover of the rectangular gas duct of the boiler, comprising a frame frame formed by distributing and collecting manifolds with their bypass sections, a tubular cooling surface for ceiling overlap connected to the distributing and collecting manifolds, cooling water supply and exhaust pipes and a plug, characterized in that it is provided with a partition, distributing and collecting manifolds are placed adjacent to one another in one of the corners of the frame frame and the communication of their bypass sections with each other, and the supply pipes and the cooling water outlet is connected to the ends of the collecting manifold, the partition is placed inside the latter in the connection area of the water supply pipe, and the plug with the cross-section of the distributing collector in the area adjacent to the collecting manifold is blocked, while the tubular cooling surface is made in the form of a flat multi-way membrane panel, which connected to the collecting and distributing collectors from the side of the partition facing the cooling water outlet pipe.  2. The cap according to claim 1, characterized in that it is equipped with cooling water inlet and outlet pipelines and flexible hoses, the latter being connected to corresponding branch pipes by means of the latter.

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