SU932091A1 - High pressure casing heat insulation - Google Patents

Description

The invention relates to tank construction and can be used for thermal protection of high-pressure housings.

The known design of thermal insulation, consisting of sheets of steel-wall, fastened in blocks with stitched bolts and resting the “dihs on metal shelves 1.

The disadvantage of this design is the convection of the heat transfer medium in the seams between the blocks, the large heat losses through the metal shelves and the metal casing of the blocks, the uneven heating of the metal shell of the housing.

The closest to the technical essence of the present invention is thermal insulation, consisting of a set of layers formed by parallel metal sheets, e-KJno4eHHHMH in an airtight, gas-filled casing 2.

The use of known insulation is associated with the need to use special devices for pressure equalization in the hermetic shell and in the circuit; The disadvantages include significant heat loss through the shell (especially when

its performance from metal) and the developed convection of the heat carrier in gaps between blocks. .

The purpose of the invention is to increase the durability and efficiency of thermal insulation.

This goal is achieved by the fact that the screen layers are made of separate sheets assembled in a chess order, with the sheets of each preceding layer being covered with sheets of the subsequent layer with the formation of cross-sectional insulation through the thickness.

15

Figure 1 shows the heat insulation of qi, a general view; on - protective cover, general view; in FIG. 3, thermal insulation without protective caps.

Heat insulation is

20 is a set of screen layers consisting of separate sheets 1 and 2 and protective covers 3 of rigid construction, which are attached in the center with lock washers 4, nuts 5,

25 and in the corners with compensating crosses 6, washers 4 and nuts 5 to the anchors 7. The screen layers are made up of separate sheets of two unified shapes and sizes with holes 30 in the center. One form - small

rectangular sheet I, and the other, a large rectangular sheet 2 with beveled corners, the screen layers being spaced by alternating layers of smooth and corrugated sheets. The protective cover 3 is a welded box (made of stainless steel, filled with a set of stapfoli screens 8. It protects the thermal insulation from mechanical and thermal influences of the environment. In this insulation, all the seams between the sheets of the previous layer are overlapped by subsequent layers zy with relative n / 1 displacement. The thermal insulation cavity communicates with the contour via channel 9 formed when assembling sheets 1 and 2.

The proposed thermal insulation is capable of operating under conditions of rapid change in the pressure of the heat transfer fluid due to the fact that its cavity communicates with the circuit through a channel formed during assembly of the sheets, which ultimately leads to a longer thermal insulation durability. In this case, the efficiency of the insulation increases due to a decrease in heat loss, since its structure is uniform over the entire surface.

Claims (2)

1. Technical project in Teploproject, 34784-09, 1972. 2. The patent of Germany 2626616, cl. F 16 L 59/08, published 1978 I. ----- ii --- p. I