SU985703A1 - Limiter of heat transfer agent flow between tubes and case in heat exchange apparatus - Google Patents

Description

The invention relates to tagging devices, namely, devices for providing directional movement of coolants, and can be used, in particular, in aircraft.

A limiting device for the flow of heat transfer medium between the pipes to the housing in the heat exchanger apparatus is known, which contains a sleeve consisting of two parts fixed at opposite ends of the pipes and a plate placed between the last pipes along the length of which are made like rings, attached to, opposite sides of the plate placed between adjacent pipes l.

The disadvantage of this limiter is unreliability, since the limiter does not prevent the pipes from vibrating and does not exclude the flow of the medium between the tubes and the casing due to the inevitable deviations of the shape of the mating parts within the limits of manufacturing tolerances.

Also known limiter peretachek coolant between the pipes and the housing e of the heat exchanger apparatus, containing a plate with flanging, in contact with the inner surface of the housing and ring elements having holes for the pipe 2.

The disadvantage of this limiter lies in the low operational reliability due to the impossibility of its use in the conditions of vibration and shock loads.

The purpose of the invention is to increase the exp-10 of the reliability of the field in terms of vibration and shock loads.

This goal is achieved by the fact that in the limiting leakage of the heat transfer medium by means of pipes and bodies in a heat exchanger containing a plate with flanging in contact with the inner surface of the housing and ring elements with holes for pipes, the selection was made corrugated and annular the elements are rigidly attached to the plate.

Figure 1 shows a schematic representation of the proposed perepech optimizer}

25 in FIG. 2 — a heat exchanger with limiters of leakage located therein; on fig.Z - section aa in figure 2.

Overflow Limiter contains

30 a plate 1 with flanging 2 and annular elements 3 having openings 4. The flanging 2 is in contact with the inner surface of the heat exchanger body 5, pipes 6 are placed in the holes x 4 and passing through the transverse partitions 7 of the device and fixed in tube sheets 8 and 9 .

When the coolant moves across the heat exchange tubes 6, the plate 1 prevents the media from flowing between the tube 6 and the inner surface of the apparatus case 5.

The use in a heat exchanger of a restrictor that has annular elements with openings that cover the pipe on which they are installed around the entire circumference, and flanging, made corrugated with the amount of elastic deformation at the corrugations that exceed the tolerance for the manufacture of the tube fitting assembly - restrictors of leakage - body , virtually eliminates the flow of the medium between the tubes and the body, despite the presence of unavoidable deviations of the shape of the parts of the heat exchanger within the tolerances for their manufacture, but

It also allows to increase the intensity of heat exchange and the reliability of the heat exchanger in the conditions of vibration and shock loads.

Claims (2)

1. The author's certificate of the USSR W 642595, class, F 28 F 9/22, 1977. 2. USSR author's certificate number 596812, cl. F 28 F 9/22, 1976.