SU718688A1 - Shell-and-tube cross-flow air cooler - Google Patents

Description

one

The invention relates to shell-and-tube cross-flow air preheaters and can be used in transport engineering.

Known shell-tube cross-flow air coolers, mainly for transport diesel engines, containing lamellar limiters placed between the casing and the tube bundle and in contact with the lateral surface of the latter 1.

A disadvantage of the known air coolers is the low tightness of the beam in the case of its long length and the complex shape of the side surfaces.

The purpose of the invention is to increase the tightness.

This goal is achieved by the fact that the beam is divided by a transverse polymer partition, between the limiter and the casing there is a clamped casing enclosing the perimeter partition and made with elastic inserts in contact with the restrictors whose ends are bent and have contact with the casing in the form of elastic connections, with the beam-side stoppers covered with a corrugated layer of heat-resistant polymer,

the tongue between the corrugations of which is 0.2-0.5 of the pitch of the pipes in contact with the stopper.

FIG. 1 depicts the described air cooler, side view; in fig. 2 is a section A.-A in FIG. I; in fig. 3 shows a section B-B in FIG. one.

The air cooler contains plate limiters 1, placed between

the casing 2 and the tube bundle 3 and in contact with the lateral surface of the latter. Nook 3 is divided by a transverse polymeric partition 4, between the limiter I and the casing 2 is placed rigid

the holder 5, covering the partition 4 along the perimeter and is made with elastic liners 6 in contact with the limiters 1, the end sections of which are bent and have contact with the casing 2 in the form

elastic ties. Limiters 1 on the side of the beam 3 are covered with a corrugated layer

7 heat-resistant polymer, the schag between the corrugations 8 of which was 0.2-0.5 from the schag beam tubes 3, in contact with the limiters 1. The outer surface of the tubes of the beam 3 is provided with transverse ribs 9.

In the region 8 of the partition 4 and the holder 5 on the surfaces of the limiters 1, which are close to the bundle 3, the polymer layer 7 is absent than

guaranteed clearance 10

between the surfaces of the restraints 1 and the partition 4.

Bent end sections of the limiters 1 in contact with the casing 2 in the form of elastic connections provide the stops 1 to the ribs B of the pipe 3 and prevent the annular space from flowing between the casing 2 and the stops 1. The configuration of the stops 1 is made in accordance with the configuration of the lateral the tube tube bundle 3 and its surface, covered with a layer 7 of polymer, to the edges of the tubes 9 fins and the knob 3, which prevents the annular space from flowing over the bundle 3. The corrugations 8 on the surface of the polymer layer 7 contributes to the reliability of contact between the tubes of the beam 3 and the stops 1, and the presence of the gap 10 allows the clamps 5, through the liners 6, to clamp the stops 1 to the lateral surface of the beam 3, simultaneously locking the stops against the case 2.

The invention allows an airtightness of the air cooler to be enhanced and prevents the annulus environment from flowing between the tube tube and the casing, which increases the efficiency of the air cooler.

Formula n 3 o b e e n i

Claims (2)

1. The shell is a rectangular air cooler, advantageously for transport diesel, containing lamellar barriers placed between the casing and the pipe nipple and in contact with the lateral surface of the latter, characterized in that, for the purpose of increasing the tightness, the grandchild is separated and the cross-section is applied. the casing houses a rigid ferrule encompassing the perimeter partition and is made with elastic inserts in contact with the limbs, the end parts of which are from are bent and have contact with the casing in the form of elastic connections. 2. The air cooler according to claim 1, is distinguished by the fact that the beam-side stoppers are covered with a corrugated layer of heat-resistant iolimer, the corrugation of which is 0.2-0.5 of the tubular strap in contact with the stopper. Information sources accepted for examination at examination 1. U.S. Patent No. 1950211, cl. 165-158, publ. 1932.