SU943513A1 - Shell-and-tube heat exchanger - Google Patents

Description

one

The invention relates to a power system, in particular to heat exchangers for heat recovery of high-temperature heat transfer fluids (up to 900-920 ° C), and can be applied in various areas of the national economy.

Known shell-and-tube heat exchangers, containing a casing with connections for supplying and discharging heat-transfer fluids, fixed in tube plates. a beam connected to the gas distribution chambers, and a shell that is coaxially placed around the beam and installed in relation to the tube plates with a gap SP.

The disadvantage of the heat exchanger is its low reliability when using heat transfer fluids with a large temperature difference.

The purpose of the invention is to enhance the performance.

The goal is achieved by the fact that in a known heat exchanger the casing is provided with annular partitions

for fastening the shell and supports for the tube plate, installed on the supply side of the high-temperature heat carrier and provided with lining on the side of the gas distribution chamber, and on the side of the tube bundle with a heat shield, both boards connected to their gas distribution chambers by means of compensators.

ten

The tube board can be equipped with protective tips, which are inserted into the beam pipes through the brickwork, made mainly of kaolin fiber, from the side of the supply of the high-temperature heat carrier.

A liquid sprayer can be placed above the tube plate on the supply side of the high-temperature heat-transfer agent, which is made in the form of a coil from the end of the coil that has a perforation on the side surface.

Claims (3)

Pipe board from the supply of high-temperature coolant 39 may be made of a composite of concentrically placed parts connected to each other by means of compensators. 1 shows a heat exchanger; figure 2 - node I in figure 1. The heat exchanger contains a casing 1 with nozzles 2 for supplying the coolant to the tube space, 3 and A of the hemotube space 5 and 6 for discharging the Urubnoi and annulus fluids, respectively, mounted in tr (bench boards 7 and 8 tube bundle 9 connected to the gas distribution chambers 10 and 11 and a shell / 12 coaxially placed around the bundle 9. The casing 1 is provided with ring partitions 13 for fastening the shell 12 and supports And for the pipe jQocKM 7, equipped with a gasket 15 on the gas-distributing chamber 10 side a bundle 9 with a heat shield 1b. Both tube plates 7. and 8 are connected to their gas distribution chambers 10 and 11 by means of compensators 17. The tube plate 7 is equipped with protective tips 18, inserted into the bundle tubes 9 through the brickwork 15. A sprayer a liquid 19, made in the form of a coil of a perforated from the end, having a perforation on the side surface. The tube plate 7 is made of a composite of co-centrically arranged parts interconnected by means of compressors 20. In the gas distribution chamber 10 become a gas distributor 21 in the gap between the housing 1 and the shell 12 mounted grating 22 and on the tubular beam 9 - septum 23. The heat exchanger operates as follows. The high-temperature coolant is supplied through the pipe 2 and the gas distribution chamber 10 into the tube bundle 9, after which it is discharged from the heat exchanger through the pipe 5. The annular heat carrier flows into the casing 1 through the pipes 3 and passes through the grids 22 and enters the gap between the shell 12 and the pipe the board 8, then washes the beam 9 and is discharged through the pipe 9. The inert heat-transfer fluid is supplied to the atomizer 34 of the liquid 19 and through the perforations to the brickwork 15 and protective tips 18, which reduces their temperature due to irrigating fluid. The resulting vapors are diverted from the main coolant flow. The use of the proposed construction of a shell-and-tube heat exchanger allows to increase its reliability when using heat-transfer agents with a large temperature difference. Claim 1. Shell-and-tube heat exchanger for heat recovery of high-temperature heat carrier, comprising a housing with connection and discharge pipes for heat transfer fluids; and the use of coolants with a large temperature difference, the casing is provided with annular partitions for a fixed shell and supports for a tube plate installed on the side of the A high-temperature heat transfer fluid is equipped with a lining on the gas distribution chamber side, and a heat shield on the tube bundle side, with both boards connected to their gas distribution chambers by means of compensators. 2. A heat exchanger according to claim 1, in accordance with the fact that the tube plate on the supply side of the high-temperature heat transfer medium is provided with protective tips inserted into the beam tubes through a brickwork, made mainly of kaolin fiber. 3. The heat exchanger according to claim 1, about tl and the fact that above the tube plate from the supply side of the high-temperature heat transfer fluid dispenser is placed, made in the form of a coil jammed from the end, having a perforation on the side surface. . The heat exchanger according to claim 1, about tl and h and y and with the fact that the tube board from the supply side of high temperature 5E. + ZZi6 A heat transfer medium is made up. Sources of information from Concentric placed parts are taken into account when examining data interconnected by means of 1, the German Patent N, compensators. F 28 O 7/00, published 1978