SU1302130A1 - Method for fastening tubes in tube plates of heat exchanger - Google Patents

Abstract

The invention relates to heat exchangers and reduces the labor intensity of the collection. The sleeves 4 are secured in the holes of the tube plates (TD) 3 by welding. One of the TDs is attached to the housing (K) 1. In K 1, at least two movable guide partitions 6 with holes coaxial with holes TD are installed. Through the holes in the partitions up to the stop, all tubes 2 are inserted into the AP. Then, a second TD is applied to the ends of these tubes protruding from K and pressed against K 1 towards the first. During compression of the tubes 2 between the TDs, their ends are clamped in annular conical gaps formed by the outer conical surface of the sleeves 4 and the walls of the holes in the TD 3. In the said gaps, sealing elements are placed, which deform under compression, provide hydraulic density compounds. 2 Il. (L S i VG Figure 1

Description

113

The invention relates to heat exchangers and can be used for fastening pipes in tube plates of heat exchangers used in various industries,

The purpose of the invention is to reduce the labor intensity of the assembly.

Figure 1 shows the heat exchanger with pipe fastening in tube plates; figure 2 - node mounting pipe In tube plate.

The heat exchanger comprises a housing 1 with a bundle of heat exchange tubes 2 placed inside, fixed in tube plates 3,

The ends of the pipes 2 are inserted into the holes of the tube plates 3 and clamped by the sleeves 4, having a conical outer surface mating with the inner surface of the end sections of the pipes. Sealing elements 5 are placed in the gaps between the sleeves 4 and the board 3. ,

The method of fastening pipes in tube sheets is carried out as follows.

The sleeves 4 with a conical outer surface and an inner hole profiled in a smooth curve are fixed in the holes of the tube plates 3, for example, by welding. One of the tube plates is attached to the Tenjjoo6MeHHoro housing 1, and in the heat exchanger housing, at least two movable guide partitions 6 with holes coaxially with the holes of the tube plates are installed. Through the holes in the partitions up to the stop, all the tubes 2 are inserted into the cutting board. Then the second tube plate is applied to the ends of these tubes protruding from the housing, pressed against the heat exchange housing 1 2

When the tubes are compressed between the tube plates, their ends are clamped in annular conical gaps formed by the outer conical surface of the head 4 and the walls of the holes in the tube plates 3. Seals 5, plastically deformed under compression, provide the hydraulic density to be connected

The use of the invention allows to increase the service life and interrepair period of the heat exchanger, since the ends of the tubes are protected from erosion by the sleeves. In addition, it is possible to access the annular space of a heat exchanger with rigid tube plates for periodic cleaning and repair.

Claims (1)

Invention Formula The method of fastening pipes in tube plates of a heat exchanger by installing pipes in the holes of the boards, followed by pressing the ends of the pipes to the boards by means of bushings having a conical surface that mates with the inner surface of the end sections of the pipes, in order to reduce labor intensity the assemblies, first in the openings of both tube plates, fasten the sleeves into the gaps formed by the sleeves and one of the planks; the ends of the pipes, then on the second ends of the pipes, another tube plate is applied, counter-axial forces are applied to both tube plates and simultaneous fixing of the tubes in both tube plates. E Compiled by M.Kosorotov Editor S.Patrusheva Tehred N.Glushchenko Proofreader A.Obruchar Order 1207/41 Circulation 612 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, Projecto st., 4 FIG. 2