CN222993542U

CN222993542U - A leakage-proof structure for a multi-stream tube-wound heat exchanger

Info

Publication number: CN222993542U
Application number: CN202421942627.4U
Authority: CN
Inventors: 杨依海; 丁际伟; 郝建民
Original assignee: Jiangsu Oriental Ruiji Energy Equipment Co ltd
Current assignee: Jiangsu Oriental Ruiji Energy Equipment Co ltd
Priority date: 2024-08-12
Filing date: 2024-08-12
Publication date: 2025-06-17
Anticipated expiration: 2034-08-12

Abstract

The utility model discloses an anti-leakage structure of a multi-stream bypass tube heat exchanger, including a double tube sheet assembly arranged between an outer shell and a shell head, wherein the inlet end and the outlet end of multiple groups of fluid pipelines in the outer shell are symmetrically arranged on the double tube sheet assembly; an intermediate partition and a partition plate are arranged in the shell head, and the intermediate partition and the partition plate are used to separate the inlet end and the outlet end of the multiple groups of fluid pipelines to form multiple fluid medium inlet cavities and fluid medium outlet cavities. The utility model is provided with a double tube sheet assembly, and the multiple groups of fluid pipelines are fixed by an upper tube sheet assembly and a lower tube sheet assembly. Two upper tube sheet assemblies and a lower tube sheet assembly are used. Even if one tube sheet leaks, the fluid will not directly flow into the shell side or the tube side, which can effectively prevent cross contamination, avoid damage to the heat exchanger equipment and interruption of production, ensure that the heat exchanger can still maintain stable performance under harsh or abnormal working conditions, and improve the anti-leakage performance of the heat exchanger.

Description

Leakage-proof structure of multi-strand coiled tube type heat exchanger

Technical Field

The utility model belongs to the technical field of heat exchangers, and particularly relates to a leakage-proof structure of a multi-flow winding tube type heat exchanger.

Background

The coiled tube heat exchanger is heat exchange equipment widely applied to industrial production, firstly, the coiled tube heat exchanger is taken as high-efficiency and energy-saving heat exchange equipment with high importance of environmental protection and energy conservation in China, and is accepted and favored in the market more and more, particularly in the industrial fields of petroleum, chemical industry, metallurgy and the like, the application of the coiled tube heat exchanger is one of main means for adjusting a push energy structure and promoting green transformation upgrading, and secondly, the coiled tube heat exchanger can be suitable for heat exchange among various mediums, such as steam-water, water-oil, air-water, air-gas and the like, has wide application prospect in different industrial fields, and is long in service life, simple in structure, convenient to maintain and lower in use cost than other heat exchange equipment, so that the coiled tube heat exchanger also has more advantages in the market.

The working principle of the coiled tube type heat exchanger is mainly based on heat transfer between fluid in a pipeline and fluid outside the pipeline, specifically, the internal fluid and the external fluid are respectively subjected to direct heat exchange between a spiral tube with smaller inner diameter of the pipeline and a fixed tube with larger outer diameter of the pipeline, the internal fluid is generally liquid or gas, the external fluid is cooling water or steam, and when the internal fluid flows in the spiral tube, heat carried by the internal fluid is conducted to the outer surface of the fixed tube through the tube wall and then is dissipated through absorption of the external fluid, so that heat exchange is realized.

The multi-flow coiled tube heat exchanger is used for simultaneously processing various working media, and needs to transfer larger heat under a small temperature difference and has higher operating pressure of the medium in the tube.

Disclosure of utility model

The utility model aims to provide a leakage-proof structure of a multi-flow coiled tube type heat exchanger, so as to solve the problems in the background art.

The utility model provides a leakage-proof structure of a multi-flow coiled tube heat exchanger, which comprises a double tube plate assembly arranged between an outer shell and a shell end socket, wherein the inlet ends and the outlet ends of a plurality of groups of fluid pipelines in the outer shell are symmetrically arranged on the double tube plate assembly;

the shell head is internally provided with a middle partition plate and a separation partition plate, and the middle partition plate and the separation partition plate are used for separating the inlet ends and the outlet ends of a plurality of groups of fluid pipelines to form a plurality of fluid medium inlet cavities and fluid medium outlet cavities.

Preferably, the double tube plate assembly comprises an upper tube plate assembly and a lower tube plate assembly;

The upper tube plate assembly and the lower tube plate assembly comprise a plurality of annular plates and a circular plate, and the annular plates and the circular plate form a convex plate structure which is stepped downwards from outside to inside;

The inlet ends and the outlet ends of the fluid pipelines are symmetrically arranged on the annular plates and the circular plate respectively.

Preferably, a plurality of annular plates and one annular plate are connected through a fixed block and a bolt, and the annular plates, the annular plates and the fixed blocks are connected in a sealing mode through sealing gaskets.

Preferably, the outermost annular plate is in sealing connection with the outer shell and the shell closure head through a sealing gasket.

Preferably, the middle partition plate is arranged in the middle of the shell seal head, and the inlet ends and the outlet ends of the fluid pipelines are taken as axes.

Preferably, a plurality of the separation baffles are arranged, and a plurality of the separation baffles are arranged in the shell seal head and are used for separating the inlet ends and the outlet ends of a plurality of groups of the fluid pipelines.

Preferably, the separation partition plate is of a semicircular structure.

Compared with the prior art, the utility model has the beneficial effects that:

1. The double-tube-plate assembly is arranged, a plurality of groups of fluid pipelines are fixed through the upper tube-plate assembly and the lower tube-plate assembly, and the two upper tube-plate assemblies and the lower tube-plate assembly are adopted, so that fluid cannot directly flow into a shell side or a tube side even if one tube plate leaks, cross contamination can be effectively prevented, damage and interruption of production of heat exchanger equipment are avoided, stable performance of the heat exchanger can be still maintained under severe or abnormal working conditions, and the leakage-proof performance of the heat exchanger is improved;

2. The utility model is provided with the middle baffle plate and the separation baffle plate, on the basis of the double tube plate assembly, the middle baffle plate and the separation baffle plate are used for separating the inlet ends and the outlet ends of a plurality of groups of fluid pipelines to form a plurality of fluid medium inlet cavities and fluid medium outlet cavities, and by separating different fluid channels, the direct contact between different fluids is avoided, and the risk of cross contamination is reduced;

3. The sealing gasket is arranged, so that the annular plate, the circular plate, the outer shell and the shell seal head are effectively sealed, the sealing performance of the heat exchanger is improved, and the leakage-proof performance is further improved.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

fig. 2 is an enlarged schematic view of the structure of fig. 1 a.

The device comprises a shell, a shell head, a double tube plate assembly, an upper tube plate assembly, a lower tube plate assembly, a ring plate, a circular plate, a fixing block, a bolt, a sealing gasket, a fluid pipeline, a middle partition plate and a separation partition plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, the leakage preventing structure of the multi-flow coiled tube heat exchanger provided by the utility model comprises a double tube plate assembly 3 arranged between an outer shell 1 and a shell end socket 2, wherein the inlet ends and the outlet ends of a plurality of groups of fluid pipelines 4 in the outer shell 1 are symmetrically arranged on the double tube plate assembly 3, the double tube plate assembly 3 comprises an upper tube plate assembly 301 and a lower tube plate assembly 302, the upper tube plate assembly 301 and the lower tube plate assembly 302 respectively comprise a plurality of annular plates 30a and a circular plate 30b, and the annular plates 30a and the circular plate 30b form a convex plate structure which is stepped downwards from outside to inside;

The double tube plate assembly 3 is arranged, a plurality of groups of fluid pipelines 4 are fixed through the upper tube plate assembly 301 and the lower tube plate assembly 302, and the two upper tube plate assemblies 301 and the lower tube plate assembly 302 are adopted, so that fluid cannot directly flow into a shell side or a tube side even if one tube plate leaks, cross contamination can be effectively prevented, damage of heat exchanger equipment and interruption of production are avoided, stable performance of the heat exchanger can be still maintained under severe or abnormal working conditions, and the leakage prevention performance of the heat exchanger is improved;

The middle partition plate 5 and the branch partition plates 6 are arranged in the shell seal head 2, the middle partition plate 5 and the branch partition plates 6 are used for separating the inlet ends and the outlet ends of the plurality of groups of fluid pipelines 4 to form a plurality of fluid medium inlet cavities and fluid medium outlet cavities, the middle partition plate 5 is arranged in the middle of the shell seal head 2 by taking the inlet ends and the outlet ends of the plurality of groups of fluid pipelines 4 as axes, the branch partition plates 6 are arranged in the shell seal head 2, the plurality of branch partition plates 6 are used for separating the inlet ends and the outlet ends of the plurality of groups of fluid pipelines 4, and the branch partition plates 6 are of a semicircular structure;

The utility model is provided with the middle baffle plate 5 and the separation baffle plate 6, on the basis of the double tube plate assembly 3, the middle baffle plate 5 and the separation baffle plate 6 are used for separating the inlet ends and the outlet ends of a plurality of groups of fluid pipelines 4 to form a plurality of fluid medium inlet cavities and fluid medium outlet cavities, and by separating different fluid channels, the direct contact between different fluids is avoided, and the risk of cross contamination is reduced.

In this embodiment, as shown in fig. 1-2, a plurality of annular plates 30a and one circular plate 30b are connected through a fixed block 30c and a bolt 30d, the annular plates 30a, the circular plate 30b and the fixed block 30c are connected in a sealing manner through a sealing gasket 30e, and the outermost annular plate 30a is connected in a sealing manner with the outer shell 1 and the shell closure 2 through the sealing gasket 30 e;

The sealing gasket 30e is arranged, so that effective sealing among the annular plate 30a, the circular plate 30b, the outer shell 1 and the shell closure head 2 is realized, the sealing performance of the heat exchanger is improved, and the leakage-proof performance is further improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A leakage prevention structure for a multi-stream wound tube heat exchanger, characterized in that it comprises a double tube sheet assembly (3) arranged between an outer shell (1) and a shell head (2), wherein the inlet ends and outlet ends of multiple groups of fluid pipelines (4) in the outer shell (1) are symmetrically arranged on the double tube sheet assembly (3);

An intermediate partition (5) and a partition plate (6) are provided in the shell head (2); the intermediate partition (5) and the partition plate (6) are used to separate the inlet ends and outlet ends of a plurality of groups of fluid pipelines (4) to form a plurality of fluid medium inlet cavities and fluid medium outlet cavities.

2. The anti-leakage structure of a multi-stream wound tube heat exchanger according to claim 1, characterized in that: the double tube sheet assembly (3) comprises an upper tube sheet assembly (301) and a lower tube sheet assembly (302);

The upper tube plate assembly (301) and the lower tube plate assembly (302) both comprise a plurality of annular plates (30a) and a circular plate (30b), wherein the plurality of annular plates (30a) and the circular plate (30b) form a convex plate structure extending downward in a stepped manner from outside to inside;

The inlet ends and outlet ends of the plurality of groups of fluid pipes (4) are symmetrically arranged on the plurality of annular plates (30a) and one circular plate (30b), respectively.

3. The anti-leakage structure of a multi-stream bypass heat exchanger according to claim 2, characterized in that: the plurality of annular plates (30a) and one circular plate (30b) are connected by a fixing block (30c) and bolts (30d), and the annular plates (30a), the circular plates (30b) and the fixing blocks (30c) are sealed and connected by a sealing gasket (30e).

4. The anti-leakage structure of a multi-stream wound tube heat exchanger according to claim 3, characterized in that the outermost annular plate (30a) and the outer shell (1) and the shell head (2) are sealed and connected via a sealing gasket (30e).

5. The anti-leakage structure of a multi-stream wound tube heat exchanger according to claim 1, characterized in that the middle partition plate (5) is arranged in the middle of the shell head (2) with the inlet end and the outlet end of the plurality of groups of fluid pipelines (4) as the axis.

6. The anti-leakage structure of a multi-stream tube-wound heat exchanger according to claim 5, characterized in that: a plurality of said partition plates (6) are provided, and the plurality of said partition plates (6) are arranged in the shell head (2) to separate the inlet end and the outlet end of the plurality of groups of said fluid pipelines (4).

7. The anti-leakage structure of a multi-stream wound tube heat exchanger according to claim 6, characterized in that the partition plate (6) is a semicircular structure.