CN111102873A

CN111102873A - Heat exchanger tube bundle

Info

Publication number: CN111102873A
Application number: CN201811270576.4A
Authority: CN
Inventors: 薛家伟; 谭银昌; 王东海
Original assignee: Hubei Shiji Weiye Anti Corrosion Technology Co ltd
Current assignee: Hubei Shiji Weiye Anti Corrosion Technology Co ltd
Priority date: 2018-10-29
Filing date: 2018-10-29
Publication date: 2020-05-05

Abstract

The utility model provides a heat exchanger tube bank, includes the casing, and the welding has foraminiferous bottom plate about the casing, and the outer terminal surface spraying of foraminiferous bottom plate has the anticorrosive coating, and the anticorrosive coating material is PO powder. According to the heat exchanger tube bundle provided by the invention, the corrosion resistance and the service life of the graphite condenser tube bundle can be improved through PO powder.

Description

Heat exchanger tube bundle

Technical Field

The invention relates to fruit processing production equipment, in particular to a heat exchanger tube bundle.

Background

The graphite condenser tube bundle is fixed on the condenser shell by welding at the liquid inlet bottom plates at two ends and then painted, and the graphite condenser tube bundle is usually used for condensing some corrosive high-temperature substances, so that the welded part is easy to corrode and oxidize.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a heat exchanger tube bundle, which can quickly prevent the corrosion and oxidation of the welding part of the perforated bottom plate at the end head of the graphite condenser, further improve the corrosion resistance of the graphite condenser and prolong the service life of the graphite condenser.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a heat exchanger tube bank, includes the casing, and the welding has foraminiferous bottom plate about the casing, and the outer terminal surface spraying of foraminiferous bottom plate has the anticorrosive coating, and the anticorrosive coating material is PO powder.

An end cover is arranged on the shell on one side of the bottom plate with the hole; the end cover comprises a cover body, and the cover body and a flange plate on the shell are locked through a connecting mechanism; a lining is arranged in the cover body and comprises a clamping ring, a connecting part and an anti-overflow ring; the clamping ring is provided with a clamping head which is clamped with the clamping groove on the inner side of the end cover; the anti-overflow ring is provided with an annular ring along the radial annular groove from inside to outside, the corresponding bottom plate with the hole is provided with an annular ring, and the annular ring is clamped into the annular ring to form labyrinth clamping.

The connecting mechanism comprises ear plates arranged on the left and right sides of the shell, bolts are hinged to the ear plates, connecting plates are welded to the corresponding end covers, U-shaped openings are formed in the connecting plates, and the bolts are locked through butterfly nuts after rotating into the U-shaped openings.

PO powder is coated on the outer surface of the lining.

According to the heat exchanger tube bundle, PO powder is sprayed on the outer end face of the original bottom plate with holes, corrosion and oxidation of the welding position of the edge of the bottom plate with holes and a shell can be avoided, the inner lining is arranged in the end cover, so that gaseous substances can be prevented from overflowing from a flange connector, and meanwhile, the gaseous substances can be further prevented from contacting the welding position of the bottom plate with holes, and corrosion and oxidation are avoided.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a front sectional view of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view of the structure of the present invention.

In the figure: the anti-overflow device comprises a shell 1, a bottom plate 2 with holes, an end cover 3, a cover body 4, a connecting mechanism 5, an inner lining 6, a clamping ring 7, a connecting portion 8, an anti-overflow ring 9, a clamping head 10, a clamping groove 11, an annular groove 12, an annular ring 13, an ear plate 14, a bolt 15, a connecting plate 16, a feeding hole 17, a discharging hole 18, a water inlet 19 and a water outlet 20.

Detailed Description

As shown in fig. 1-3, a heat exchanger tube bundle comprises a shell 1, perforated bottom plates 2 are welded on the left and right sides of the shell 1, a plurality of through holes are arranged on the perforated bottom plates 2, and the through holes are communicated with pipelines between the two perforated bottom plates 2 in the shell 1 one by one. In addition, end covers 3 are arranged at the left end and the right end of the shell 1, and the end covers 3 seal the end head of the shell 1. The left end cover 3 and the right end cover 3 are respectively provided with a feed inlet 17 and a discharge outlet 18, the left side and the right side of the shell 1 are respectively provided with a water inlet 19 and a water outlet 20, and high-temperature materials (gaseous substances) enter the space in the end covers 3 through the feed inlet 17 and then enter a pipeline 21 in the shell through holes on the bottom plate 2 with holes. Meanwhile, cooling water enters the shell from the water inlet 19, cools high-temperature materials in the pipeline 21, and flows out from the water outlet 20. And the high-temperature material is condensed into a liquid state and then flows out of the discharge hole 18 at the other end, thereby completing the condensation. Because the high temperature material can direct contact the welding part of foraminiferous bottom plate 2 outer terminal surface after entering from feed inlet 17, can lead to corruption, oxidation like this, and foraminiferous bottom plate 2 corrodes, can influence the life of whole condenser after the oxidation. In order to prolong the service life of the condenser, an anticorrosive coating is sprayed on the outer end face of the bottom plate 2 with the holes, the anticorrosive coating is made of PO powder, and the PO anticorrosive coating is arranged, so that corrosion and oxidation can be avoided.

In addition, the welding part can be isolated from the entering high-temperature gaseous substance by mechanical means for further corrosion prevention. Specifically, a lining 6 is arranged in the cover body 4 in the end cover 3, and the lining 6 is of an annular structure and is open at two ends. The lining 6 comprises a clamping ring 7, a connecting part 8 and an anti-overflow ring 9 from outside to inside; the clamping ring 7 is provided with a clamping head 10, the clamping head 10 is clamped with a clamping groove 11 on the inner side of the end cover 3, the anti-overflow ring 9 is provided with an annular groove 12 from inside to outside along the radial direction, the corresponding bottom plate 2 with holes is provided with an annular ring 13, and the annular groove 12 is clamped into the annular ring 13 to form labyrinth clamping. After gaseous high-temperature materials enter the space between the cover body 4 and the perforated bottom plate 2, because the perforated bottom plate 2 is connected with the lining 6 in a closed-cell manner, the gaseous materials cannot or rarely enter the welding part of the perforated bottom plate 2 and the shell 1 from the radial direction, thereby reducing the contact corrosion oxidation.

In addition, the outer surface of the liner 6 is also sprayed with PO powder.

In order to conveniently and rapidly install the cover body 4, the left and right lug plates 14 of the shell body 1 can be welded, the corresponding end cover 3 is welded with a connecting plate 16, a U-shaped opening is formed in the connecting plate 16, when the bolt 15 is rotated to be in a vertical state, the bolt is just positioned in the U-shaped opening, and then the bolt is locked through a butterfly nut.

Claims

1. A heat exchanger tube bundle characterized by: the novel multifunctional shell comprises a shell (1), wherein a perforated bottom plate (2) is welded on the left side and the right side of the shell (1), and an anticorrosive coating is sprayed on the outer end face of the perforated bottom plate (2) and is made of PO powder.

2. A heat exchanger tube bundle according to claim 1, wherein: an end cover (3) is arranged on the shell (1) at one side of the bottom plate (2) with the hole; the end cover (3) comprises a cover body (4), and the cover body (4) is locked with a flange plate on the shell (1) through a connecting mechanism (5); a lining (6) is arranged in the cover body (4), and the lining (6) comprises a clamping ring (7), a connecting part (8) and an anti-overflow ring (9); a clamping head (10) is arranged on the clamping ring (7), and the clamping head (10) is clamped with a clamping groove (11) on the inner side of the end cover (3); the anti-overflow ring (9) is provided with an annular ring (13) along an annular groove (12) from inside to outside along the radial direction, the corresponding bottom plate (2) with the hole is provided with the annular ring (13), and the annular groove (12) is clamped into the annular ring (13) to form labyrinth clamping.

3. The ceramic semi-finished transfer cart of claim 2, wherein: the connecting mechanism (5) comprises ear plates (14) arranged on the left and right sides of the shell (1), bolts (15) are hinged to the ear plates (14), connecting plates (16) are welded to the corresponding end covers (3), U-shaped openings are formed in the connecting plates (16), and the bolts (15) are locked through butterfly nuts after rotating into the U-shaped openings.

4. The ceramic semi-finished transfer cart of claim 2, wherein: PO powder is coated on the outer surface of the lining (6).