SU798421A1 - Recuperator section - Google Patents

Description

(54) SECTOR OF THE RECOVERATOR

I

The invention relates to power engineering, in particular to devices for heating air with exhaust kiln gases.

The heat exchanger section is known, which holds V-shaped pipes placed along the length of the gas duct in several rows and connected at their ends to an air duct divided by partitions installed along the rows of pipes into the supply and discharge sections 1.

A disadvantage of the known recuperator is the low productivity of its single-pass section in connection with a limited number (not more than two) of rows of V-shaped pipes. The increase in productivity due to parallel connection of sections with the help of nozzles and collectors will lead to an increase in aerodynamic drag and metal consumption and, consequently, to a decrease in efficiency.

The aim of the invention is to increase the efficiency and decrease the metal intensity of the heat exchanger.

The goal is achieved by the fact that partitions are installed between the inlet and outlet ends of the pipes in each row, as well as between the pipes of adjacent rows.

to form autonomous supply and discharge sections, the first of which are made tapering, and the second - widened along the air. Partitions are made of zigzag tape. The bend spins of the bends of which, with supply boxes, form the inlet and outlet p; i: forward cameras.

FIG. I depicts the section p of the Cooper, longitudinal section; in fig. 2 shows section A-A in FIG. one.

The heat exchanger section contains 1 V-tubes 2 placed in the duct. The ends of which are inserted into the air duct 3. Partitions 4 are installed inside the air duct 3. Located between the inlet and outlet ends of the V-shaped tubes 2, and the partitions 5 between separate rows V-shaped pipes. The ends of the partitions 4, 5 are bent in opposite directions and interconnected to form autonomous feeders 6

and diverting 7 compartments, which communicate respectively with the distributing inlet 8 and diverting 9 cameras.

In order to reduce the aerodynamic drag, the autonomous supply compartments 6 and the distribution chamber 8 are made tapering, and the autonomous discharge units 7 and the distribution chamber 9 are extending along the air flow.

The partitions can be made of a continuous zigzag tape, the bends of which form with the wall of the box 3 distribution boxes 8 and outlet 9 chambers.

The cold air enters through chamber 8 at the same time in all autonomous supply compartments 6 and passes through V-shaped pipes 2, washed from the outside with hot gases. The heated air exits into the autonomous evaporative compartments 7, combines in the distribution chamber 9 and exits the recuperator section.

The technical and economic effect is achieved by reducing the power of the blower equipment and the metal content.

Claims (2)

Invention Formula . A section of the heat exchanger containing V-shaped pipes placed along the length of the duct in several rows and connected at its ends to an air duct divided by partitions installed along rows of pipes into supply and discharge sections, in order to increase efficiency and reduce metal consumption, partitions are installed between the inlet and outlet ends of pipes in each row, as well as between pipes of adjacent rows to form autonomous inlet and outlet sections, the first 0 of which are made tapering , And the second - extending along the air. 2. The section according to claim 1, characterized in that the partitions are made of a zigzag tape, the bends of which form bends with the walls of the box distribution distribution and discharge chambers. Sources of information taken into account in the examination I. V. Grigoriev. Increase of fuel use efficiency in industrial furnaces. M., “Metallurgists, 1977, p. 181. F gg