SU1343189A1 - Multipass air heater - Google Patents

Abstract

Invention m. used in boiler units. The purpose of the invention is to reduce the size of the air heater. For this, the bypass I boxes (PCs) 11, 12 are placed close to each other and are provided with a common longitudinal wall 15, which is made with sections bent in an alternating order to the side walls of each PC. Pipe boards 1, 2, 3 and 4 and transverse partitions 5 and 8 are inserted in PC 11, 12 between the bent sections and fastened with them. This arrangement of PC 11 and 12 with a common wall 15, as well as the extension of the pipe plates 1,2, 3 and 4 and partitions 5 and 6 up to wall 15 allows to maintain the order of air flow supply countercurrent with respect to gases, since PCs do not protrude beyond the dimensions of the air preheater. 1 il. Gaz / i (L 9 oo 4; oo 00 co

Description

The invention relates to energy and can be used in boiler units.

The purpose of the invention is to reduce the dimensions of the air preheater.

The drawing shows the proposed heater, axonometric.

Multi-way air heater contains heat exchange cubes of pipes, fixed in tube plates 1-4. The annular space of the first (lower) cube in the course of air is divided by a partition 5 transverse relative to the pipes to the output and gas inlet compartments 6 and 7, and the annular spaces of the second (upper) cube are divided by a partition 8 to the compartments 9 and 10. The lower 6 compartment the cube and the upper cube compartment 9 are connected by a bypass duct 11, and the compartment 7 and c; tsek 10 are connected by a duct 12. At that, the ducts 11 and 12 have side walls 13 and 14, respectively, are located close to each other and are provided with a common longitudinal wall 15, made with bent and in alternate order to the side walls 13 and 14 of the boxes 11 and 12, sections 16 to 19, with sections 16 and 18 bent to the wall 14, and sections 17 and 19 to the wall 13. The pipe boards 1 to 4 and the transverse partitions 5 and 8 are placed in boxes 11 and 12 between the bent sections

16 - 19 and fastened with them.

I

The heating gases successively pass through compartments of 10.9, 7, and 6 cubes, through the pipes of which heat is given off to the heated air, which passes through the cubes by immiscible streams a and b. One stream of air passes successively through the compartment 6 of the lower cube, the bypass valve

Editor N. Tupitsa

Compiled by G. Petrov Tehred L. Serdyukova

Order 4629/38 Circulation 494

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and Printing Enterprise, Uzhgorod, ul. Prokeshan, 4

50

five

0

five

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Rob 11 and compartment 9 of the upper cube, and another stream b - compartment 7, duct 12 and compartment 10.

Thus, the location of the bypass ducts 11 and 12 close to each other with the formation of a common longitudinal wall 15, made with bent sections 16-19, as well as the extension of tube plates 1-4 and partitions 5 and 6 to wall 15, allows to obtain essentially a single case, two bypass ducts 11 and 12 for air flows a and b, which allows to maintain the order of supply of these air flows countercurrent to gases while reducing the size of the air heater, since the bypass ducts 11 and 12 are not wider than their widths you.

Claims (1)

Invention Formula A multi-path air heater containing heat-exchange cubes of pipes fixed in tube plates, the annular space of which is divided by a transverse partition of the tubes into the inlet and outlet gas compartments connected in adjacent cubes by-pass ducts with side walls connected to the cubes on the one side, which differ from so that, in order to reduce the size, the bypass ducts are placed closely with each other and provided with a common longitudinal wall, made with bent in alternating pores ke to side wall portions of each conduit, and the tube plates and transverse partitions are induced in the duct between the curved portions and bonded with them. Proofreader L.T. sko Subscription