CN2212767Y

CN2212767Y - Heat exchanger without fixed pipe plate and pipe shell

Info

Publication number: CN2212767Y
Application number: CN 94225613
Authority: CN
Inventors: 王闰; 唐委校
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-24
Filing date: 1994-01-24
Publication date: 1995-11-15
Anticipated expiration: 2004-01-24

Abstract

The utility model relates to a tubular heat exchanger. The plate structure of the tubular heat exchanger without a fixed plate is replaced by a tube bank structure. Because the stress situation of the tube is superior to the planar structure of the tube plate, accordingly, the tube wall of the tube bank does not need to be thick, saving material and reducing stress concentration. Because tubes of the tube bank can be machined respectively and assembled together after separate assembly, accordingly, the large working equipment and high machining precision are not needed and the cost is low. In addition, all the surface of the tube bank is the effective heat exchange area, substantially increasing the utilization of material.

Description

Heat exchanger without fixed pipe plate and pipe shell

The utility model relates to shell-and-tube heat exchanger.

At present, the shell-and-tube heat exchanger of people's use all adopts traditional tube-sheet type structure.This structure need use big thickness steel plate accurately to process could guarantee the assembling of tube bank and the bearing capacity in the use, and owing to thickness disparity between tube wall and tube sheet is very big, easily causes stress to be concentrated.

The purpose of this utility model is to provide a kind of can eliminate above-mentioned shortcoming, does not adopt the shell-and-tube heat exchanger of tube plate structure.

The tube plate structure of this shell-and-tube heat exchanger that the utility model provides is replaced by a kind of pipe row structure.Because the planar structure that the stressing conditions of pipe is better than tube sheet greatly to be had, therefore, pipe row's tube wall does not need very thick, can save material like this, reduces stress and concentrates.And because pipe row's pipe can be processed respectively, always be fitted together again after the assembling respectively, therefore, no longer needing large-sized processing equipment and higher processing precision, cost will reduce greatly.In addition, pipe row surface area is effective heat exchange area, has obviously improved stock utilization.

Accompanying drawing 1 is the utility model general structure schematic diagram.The no fixed tube sheet shell-and-tube heat exchanger that the utility model provides is made up of critical pieces such as shell side outlet 1, vessel flange 2, end socket 3, tube side inlet 4, inlet adpting flange 5, isocon 6, inlet tube row 7, housing 8, tube bank 9, deflection plate 10, shell side inlet 11, outlet row 12, collector tube 13, outlet adpting flange 14, tube side outlets 15.Accompanying drawing 2 is outlet row structural representation.Inlet tube row structure is identical, but upper-lower position is opposite when installing.In pipe row, every arm comb 16 is all managed 17 assembly weldings with some tube banks, and an end of pipe comb 16 is shut, and the other end then welds together with collector tube 18.Like this, the medium by tube bank pipe 17 streams come after pipe comb 16 flows into collector tube 18, flows out from the tube side outlet.For increasing pipe row's intensity, can add weldering connecting plate 19 at the end that pipe comb 16 is shut and reinforce.

The utility model can be assembled in the following order: at first, each group tube bank pipe 17 1 end and pipe comb 16 are welded, then deflection plate 10 is set in order in the tube bank 9, weld another side pipe comb 17 again.The position of determining by design is lived deflection plate and tube bank spot welding or is adopted other method to fix, weldering isocon 6 and collector tube 13 and on institute join flange.After holding tube side on the housing 8 successfully and importing and exporting the required perforate of pipe, the tube bank that assembles is packed in the housing.To only weld the tube side inlet 4 of interior side flange and tube side outlet 15 again and outwards insert the perforate of housing 8 from the lining, with its flange with after the tube bank flange is connected, again with the housing weldering firmly, and weld outer flange.At last end socket is sealed.During maintenance, can unclamp the inner flange that tube side imports and exports earlier after, rotate the notch alignment tube side inlet 4 of tube bank with deflection plate, tube bank is pulled out.Therefore, the maintenance of equipment and scale removal are all very convenient.

Claims

1, a kind of no fixed tube sheet shell-and-tube heat exchanger, it is characterized in that replacing tube sheet with the pipe displacement, pipe row is formed by a house steward and some pipe comb assembly weldings, and every pipe comb is all restrained with heat conduction and is communicated with, house steward plays shunting action in inlet tube row, play the liquid collecting effect in outlet row.