CN217032114U

CN217032114U - Heat exchanger with distribution structure

Info

Publication number: CN217032114U
Application number: CN202123378706.6U
Authority: CN
Inventors: 周一飞; 汤会萍; 邹志荣; 徐志刚
Original assignee: Changzhou Ruikai Chemical Equipment Co ltd
Current assignee: Changzhou Ruikai Chemical Equipment Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-22
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a heat exchanger with a distribution structure, and belongs to the technical field of heat exchangers. The heat exchanger with the distribution structure comprises a heat exchanger shell pass cylinder and a heat exchange tube bundle arranged in the heat exchanger shell pass cylinder; the shell side cylinder of the heat exchanger is provided with at least one material inlet, and the material inlet is provided with an expansion section positioned in the shell side cylinder of the heat exchanger; the expansion section is provided with a distribution ring, and holes are formed in the distribution ring. According to the heat exchanger with the distribution structure, the heat exchanger enters the shell of the heat exchanger from the circumferential direction without dead angles through the holes in the distribution ring, so that dead zones are greatly reduced, and the effective heat exchange area is increased.

Description

Heat exchanger with distribution structure

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger with a distribution structure.

Background

Heat exchangers (also known as heat exchangers or heat exchange devices) are devices used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements, and are an industrial application of convective and conductive heat transfer.

The heat exchanger is a device for transferring part of heat of hot fluid to cold fluid, and is also called a heat exchanger. The heat exchanger is widely applied to industrial departments of chemical industry, petroleum, food, power, atomic energy and the like, and the figure of the heat exchanger also exists in life, such as air conditioners, refrigerators and heating facilities, so that the heat exchanger is a very basic industrial device. According to statistics: the investment of the heat exchanger in the modern chemical industry accounts for about 30% of the total investment of equipment, and accounts for about 40% of the total process equipment in an oil refinery, and the seawater desalination process device almost entirely consists of the heat exchanger. On the other hand, the heat exchanger itself is also a large consumer consuming energy and water in industry. The energy consumption of the heat exchanger equipment accounts for 13-15% of the industrial energy. Therefore, the heat exchange efficiency of the heat exchanger is improved, and the heat exchanger has great significance.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to solve the technical problem of the dead zone at the inlet end in the prior art, the utility model provides a heat exchanger with a distribution structure, which enters a heat exchanger shell from the circumferential direction without dead angles through holes on a distribution ring, so that the dead zone is greatly reduced, and the effective heat exchange area is increased.

In order to realize the purpose, the utility model provides the following technical scheme:

a heat exchanger with a distribution structure comprises a heat exchanger shell pass cylinder and a heat exchange tube bundle arranged in the heat exchanger shell pass cylinder;

the shell-side cylinder of the heat exchanger is provided with at least one material inlet, and an expansion section positioned in the shell-side cylinder of the heat exchanger is arranged at the material inlet;

the expansion section is provided with a distribution ring, and holes are formed in the distribution ring.

Preferably, the connection between the expansion section and the material inlet is convex.

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

1. the heat exchanger with the distribution structure can perfectly solve the problem of dead zones at the inlet end. After the shell side material enters the annular channel, the shell side material can enter the heat exchanger shell from the circumferential direction without dead angles through the holes on the distribution ring, so that dead zones are greatly reduced, and the effective heat exchange area is increased.

2. The heat exchanger with the distribution structure provided by the utility model weakens the scouring of shell-side materials on the heat exchange pipe. The presence of the distribution ring acts as an anti-impingement baffle. When the shell side material enters the annular channel, the flow area of the whole annular channel is larger than the sectional area of the inlet pipe, so that the pressure drop of the fluid is reduced after the material enters. Meanwhile, due to the distribution rings, the materials can form shunt on the distribution rings, the total area of the holes in all the distribution rings is larger than the sectional area of the inlet pipe, and the fluid speed is greatly reduced when the materials enter the shell pass of the heat exchanger from the holes in the distribution rings, so that the scouring and impact of the materials on the heat exchange pipe are reduced, the vibration of the outer heat exchange pipe is weakened, and the service life of the heat exchanger is finally prolonged.

3. The heat exchanger with the distribution structure provided by the utility model is integrally optimized. Because the heat exchange tube bundle and the shell side cylinder of the heat exchanger are heated differently, the generated thermal expansion is different. The fixed tube plate heat exchanger is often provided with an expansion joint, so that the temperature difference stress of the heat exchange tube, the tube plate and the shell is reduced, and the strength damage, the instability damage and the tube pull-off damage are avoided. The expansion section related by the utility model can also play a role similar to an expansion joint, and has simple processing and low cost.

4. The heat exchanger with the distribution structure provided by the utility model has high comprehensive benefits. Because the proportion of the heat exchanger equipment occupied in the whole device equipment is very high, the investment cost of the device can be greatly reduced by reducing the investment cost and the use cost of the heat exchanger, and higher investment income is brought. The heat exchanger of the utility model optimizes the structure of the shell side inlet section, improves the heat exchange efficiency of the heat exchanger, and prolongs the service life of the heat exchanger, thereby reducing the manufacturing cost of the heat exchanger and the use cost of the heat exchanger, and finally improving the comprehensive benefit of the device.

Drawings

FIG. 1 is a schematic diagram of a heat exchanger according to the prior art;

FIG. 2 is a schematic view of the heat exchanger of the present invention;

in the figure, 1, a shell pass cylinder body of a heat exchanger, 2, a heat exchange tube bundle, 3, a material inlet and 4, an inlet baffle; 5. tube plate, 6 expansion section, 7 distribution ring, 8 holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "fitted/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

A common heat exchanger configuration is shown in fig. 1: the heat exchanger comprises a shell side cylinder 1 of the heat exchanger, a heat exchange tube bundle 2 is arranged in the cylinder, and a tube plate 5 is arranged on the heat exchange tube bundle;

a material inlet 3 is formed in the outer side wall of the shell side cylinder 1 of the heat exchanger, and an inlet baffle 4 is arranged at the communication part of the material inlet 3 and the shell side cylinder 1 of the heat exchanger;

after the shell side material enters the shell side cylinder body 1 of the heat exchanger through the material inlet 3, the material flows in the direction shown by the arrow in fig. 1. The material in region a of fig. 1 does not flow substantially and a dead zone is formed. For some small heat exchangers, the proportion of the volume of the area A in the shell pass cylinder of the heat exchanger is large, so that the effective heat exchange area of the heat exchanger is greatly reduced. This is why some heat exchangers have heat exchange areas meeting the process requirements and heat exchange effects not meeting the process requirements.

In order to solve the above problems in the prior art, as shown in fig. 2, the present invention provides a heat exchanger with a distribution structure, which includes a heat exchanger shell-side cylinder 1 and a heat exchange tube bundle 2 arranged in the heat exchanger shell-side cylinder 1;

the shell side cylinder 1 of the heat exchanger is provided with at least one material inlet 3, and an expansion section 6 positioned in the shell side cylinder 1 of the heat exchanger is arranged at the material inlet 3;

the expansion section 6 is provided with a distribution ring 7, and the distribution ring 7 is provided with a hole 8.

In the present invention, the expansion section 6 is outwardly protruded at the connection with the material inlet 3.

According to the heat exchanger with the distribution structure, the expansion section 6 is additionally arranged at the inlet of the shell side cylinder body 1 of the heat exchanger, and the size of the expansion section 6 can be adjusted according to the size of the material inlet 3. The inner wall of the expansion section 6 is provided with a whole circle of distribution ring 7, and the distribution ring 7 is provided with holes 8. The distribution ring 7 and the expansion section 6 form an annular channel, and shell-side materials enter the annular channel through the material inlet 3 and enter the shell-side cylinder 1 of the heat exchanger through the holes 8 on the distribution ring 7. The size, position and number of the holes 8 on the distribution ring 7 are set according to the process requirements.

The above are only preferred embodiments of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by the equivalent or modified embodiments and the modified concepts of the present invention.

Claims

1. A heat exchanger with a distribution structure is characterized by comprising a heat exchanger shell pass cylinder and a heat exchange tube bundle arranged in the heat exchanger shell pass cylinder;

the shell side cylinder of the heat exchanger is provided with at least one material inlet, and an expansion section positioned in the shell side cylinder of the heat exchanger is arranged at the material inlet;

2. The heat exchanger with the distribution structure as claimed in claim 1, wherein the expansion section is outwardly protruded at a connection point with the material inlet.