CN217330802U

CN217330802U - Compact heat exchanger with three heat exchange media on shell side

Info

Publication number: CN217330802U
Application number: CN202220050867.8U
Authority: CN
Inventors: 张平; 卢于亮; 陈水平; 陈金火; 余辉; 袁小军
Original assignee: Hubei Defeng Heat Exchanger Co ltd
Current assignee: Hubei Defeng Heat Exchanger Co ltd
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-08-30
Anticipated expiration: 2032-01-10

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a compact heat exchanger with three heat exchange media on the shell side, which comprises a shell, wherein the inner wall of the shell is provided with a cooling core group component, the inlet and the outlet of the shell are respectively and fixedly connected with an inlet end cover, an outlet end cover, a return end cover, an inlet end cover gasket, a return end cover gasket and a return end cover gasket are respectively arranged at the joints of the inlet end cover, the return end cover and the two ends of the shell, the two ends of the inner wall of the shell are respectively assembled and fixed with a tube plate by bolts, a plurality of heat exchange tubes are arranged in the shell, the two ends of each heat exchange tube are respectively welded and fixed with the tube plate, an outer barrel, a middle barrel and an inner barrel are sequentially arranged in the shell, the utility model is designed into the parallel connection of the fluid media on the shell side of the shell-and tube heat exchanger by the common shell-and tube heat exchanger needing three independent cooling core group serial connection structures, the core group has only one unit, thereby improving the heat exchange efficiency, having small volume and reducing the cost.

Description

Compact heat exchanger with three heat exchange media on shell side

Technical Field

The utility model relates to a heat exchanger technical field particularly, relates to a compact heat exchanger of three kinds of heat transfer medium of shell side.

Background

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 plays an important role in chemical industry, petroleum, power, food and other industrial production, the heat exchanger can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, the tube side and the shell side of the heat exchanger circulating on the market are respectively one fluid medium, two fluid media are used in total, the cold and heat media exchange heat through the tube wall of a heat exchange tube to achieve the purpose of heat exchange, the common shell-and-tube heat exchanger only exchanges heat of the cold and heat fluid media, few three or more different fluid media exchange heat simultaneously, the common shell-and-tube heat exchanger needs three independent heat exchangers to be connected in series to realize the heat exchange of the three different fluid media on the shell side, the volume is large, the cost is high, the tube side of the common shell-and-tube heat exchanger has two or three fluid media which are separated by a tube box, and the shell side only has one fluid medium, however, if two or more fluid media on the shell side do not have such a structure, the following problems and disadvantages exist if a common shell-and-tube heat exchanger is adopted to cool three different fluid media on the shell side:

(1) the shell side requires three separate cooling core pack units in series, with a separate unit for each shell side media flow. Three cooling core groups are needed; the tube plate also needs three sets of six pieces, so the volume is large.

(2) The shell side is provided with three independent cooling core assembly units, and the three mediums on the shell side have no heat transfer with each other and cannot transfer heat with the barrel.

(3) And in the three independent cooling core group units on the shell side, the diameters of the cylinders are required to be consistent, and the lengths of the heat exchange tubes are not consistent.

(4) The cost is high, which is equivalent to three separate heat exchanger core groups, resulting in high cost.

Therefore, the compact heat exchanger with three kinds of shell side heat exchange media is provided, and the problems in the background art can be effectively solved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a compact heat exchanger of three kinds of heat transfer medium of shell side, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a compact heat exchanger of three kinds of heat transfer medium of shell side, includes the casing, the inner wall of casing is provided with cooling core group subassembly, the entry and the export of casing are fixedly connected with business turn over end cover and return stroke end cover respectively, just business turn over end cover and return stroke end cover are provided with business turn over end cover gasket and return stroke end cover gasket respectively with the junction at casing both ends, cooling core group subassembly includes outer barrel, middle barrel, interior barrel, tube sheet and a plurality of heat exchange tube, the shells inner wall both ends are fixed with the tube sheet with the bolt equipment respectively, a plurality of heat exchange tube, every of having arranged in the casing the both ends of heat exchange tube respectively with tube sheet welded fastening, outer barrel, middle barrel, interior barrel set gradually in the inside of casing.

Preferably, a plurality of heat exchange tubes are arranged among each layer of the outer cylinder, the middle cylinder and the inner cylinder.

Preferably, baffles for turbulent flow are distributed in the outer cylinder, the middle cylinder and the inner cylinder, and each heat exchange tube is fixedly connected inside the shell through a support plate.

Preferably, the upper ends of the outer cylinder, the middle cylinder and the inner cylinder are fixedly connected with an outer medium input pipeline, a middle medium input pipeline and an inner medium input pipeline respectively.

Preferably, an independent cavity is formed among each layer of the outer cylinder, the middle cylinder and the inner cylinder and does not leak, and different medium fluids flow through the cavities of the outer cylinder, the middle cylinder and the inner cylinder.

Preferably, each of the heat exchange tubes has cooling water flowing inside.

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

(1) the heat exchange between the tube side fluid medium and three different fluid media on the shell side can be realized.

(2) The shell side of the common shell-and-tube heat exchanger needs three independent cooling core group unit series structures, the shell side of the common shell-and-tube heat exchanger is designed into parallel connection of fluid media of the shell side of the shell-and-tube heat exchanger, only one unit is arranged in a core group, the heat exchange efficiency is improved, the size is small, and the cost is reduced.

(3) The heat exchange of the cylinder is utilized, and the cylinder is taken as a heat exchange tube. The three fluid media on the shell side can transfer heat with each other by utilizing the heat transfer surface of the cylinder. The medium with high temperature is beneficial to transferring heat to the medium with low temperature.

(4) The cost is low. The tube plates of the cooling core group are shared, and the material cost is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of a compact heat exchanger with three heat exchange media on the shell side of the present invention;

fig. 2 is a schematic structural diagram of a side view of a compact heat exchanger with three heat exchange media on the shell side of the present invention;

fig. 3 is a schematic structural diagram of a cooling core assembly of a compact heat exchanger with three heat exchange media on the shell side according to the present invention;

fig. 4 is the utility model discloses a structural schematic diagram of the heat exchange tube of three kinds of heat transfer medium's of shell side compact heat exchanger.

In the figure: 1. an inlet end cover and an outlet end cover; 2. an inlet and outlet end cap gasket; 3. cooling the core pack assembly; 301. a baffle plate; 302. an outer cylinder; 303. a middle cylinder; 304. an inner cylinder; 305. a tube sheet; 306. an outer layer medium input pipeline; 307. a middle layer medium input pipeline; 308. an inner medium input pipeline; 309. a heat exchange pipe; 4. a return end cap gasket; 5. a return end cover; 6. a housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

As shown in fig. 1 to 4, a compact heat exchanger with three heat exchange media on a shell side comprises a shell 6, a cooling core assembly 3 is arranged on an inner wall of the shell 6, an inlet and an outlet of the shell 6 are respectively and fixedly connected with an inlet and outlet end cover 1 and a return end cover 5, a inlet and outlet end cover gasket 2 and a return end cover gasket 4 are respectively arranged at the joints of the inlet and outlet end cover 1 and the return end cover 5 and the two ends of the shell 6, the cooling core assembly 3 comprises an outer cylinder 302, a middle cylinder 303, an inner cylinder 304, a tube plate 305 and a plurality of heat exchange tubes 309, the tube plate 305 is respectively assembled and fixed at the two ends of the inner wall of the shell 6 by bolts, the plurality of heat exchange tubes 309 are distributed in the shell 6, the two ends of each heat exchange tube 309 are respectively welded and fixed with the tube plate, and the outer cylinder 302, the middle cylinder 303 and the inner cylinder 304 are sequentially arranged inside the shell 6.

In this embodiment, a plurality of heat exchange tubes 309 are arranged between each layer of the outer cylinder 302, the middle cylinder 303, and the inner cylinder 304.

In this embodiment, baffles 301 for disturbing flow are distributed in the outer cylinder 302, the middle cylinder 303 and the inner cylinder 304, and each heat exchange tube 309 is fixedly connected to the inside of the casing 6 through a support plate.

In this embodiment, an outer layer medium input pipeline 306, a middle layer medium input pipeline 307 and an inner layer medium input pipeline 308 are fixedly connected to the upper ends of the outer cylinder 302, the middle cylinder 303 and the inner cylinder 304 respectively.

In this embodiment, an independent cavity is formed between each layer of the outer cylinder 302, the middle cylinder 303, and the inner cylinder 304, and no leakage occurs, and different medium fluids flow through the cavities of the outer cylinder 302, the middle cylinder 303, and the inner cylinder 304.

In the present embodiment, cooling water flows through the inside of each heat exchange tube 309.

The working principle of the compact heat exchanger with three heat exchange media on the shell side is as follows: three different fluid media are respectively input into the outer cylinder 302, the middle cylinder 303 and the inner cylinder 304 through the outer medium input pipeline 306, the middle medium input pipeline 307 and the inner medium input pipeline 308, and the baffle plate 301 arranged inside has a turbulent flow effect, an independent cavity is formed between each layer of cylinders of the outer cylinder 302, the middle cylinder 303 and the inner cylinder 304 and is not leaked, so that the contact area and the heat transfer efficiency between different medium fluids are improved, the equipment has the function of realizing the heat exchange between the fluid medium on the tube side and the three different fluid media on the shell side, the equipment is connected in parallel through the fluid media on the shell side of the shell type heat exchanger, only one unit is arranged in a core group, the heat exchange efficiency is improved, the size is small, the cost is reduced, the heat exchange of the cylinder is further utilized, and the cylinder is taken as a heat exchange tube. The three fluid media on the shell side can transfer heat with each other by utilizing the heat transfer surface of the cylinder. The heat is transferred to the medium with low temperature by the medium with high temperature, and the cost is low. The tube plate of the cooling core group is shared, and the material cost is reduced.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a compact heat exchanger of three kinds of heat exchange medium of shell side, includes casing (6), its characterized in that: the inner wall of the shell (6) is provided with a cooling core group component (3), an inlet and an outlet of the shell (6) are respectively and fixedly connected with an inlet end cover (1) and an outlet end cover (5), and the joints of the inlet and outlet end covers (1) and the return end covers (5) and the two ends of the shell (6) are respectively provided with an inlet and outlet end cover gasket (2) and a return end cover gasket (4), the cooling core assembly (3) comprises an outer cylinder (302), a middle cylinder (303), an inner cylinder (304), a tube plate (305) and a plurality of heat exchange tubes (309), tube plates (305) are respectively assembled and fixed at two ends of the inner wall of the shell (6) by bolts, a plurality of heat exchange tubes (309) are arranged in the shell (6), two ends of each heat exchange tube (309) are respectively welded and fixed with the tube plate, the outer cylinder (302), the middle cylinder (303) and the inner cylinder (304) are sequentially arranged inside the shell (6).

2. The shell side three heat exchange medium compact heat exchanger of claim 1, wherein: and a plurality of heat exchange tubes (309) are arranged among each layer of the outer cylinder (302), the middle cylinder (303) and the inner cylinder (304).

3. The shell side three heat exchange medium compact heat exchanger of claim 2, wherein: baffle plates (301) for turbulent flow are distributed in the outer cylinder (302), the middle cylinder (303) and the inner cylinder (304), and each heat exchange tube (309) is fixedly connected inside the shell (6) through a support plate.

4. The shell side three heat exchange medium compact heat exchanger of claim 2, wherein: the upper ends of the outer cylinder (302), the middle cylinder (303) and the inner cylinder (304) are respectively and fixedly connected with an outer medium input pipeline (306), a middle medium input pipeline (307) and an inner medium input pipeline (308).

5. The shell side three heat exchange medium compact heat exchanger of claim 2, wherein: an independent cavity is formed among each layer of the outer cylinder (302), the middle cylinder (303) and the inner cylinder (304) and does not leak, and different medium fluids flow through the cavities of the outer cylinder (302), the middle cylinder (303) and the inner cylinder (304).

6. The compact shell-side three heat exchange medium heat exchanger of claim 1, wherein: cooling water flows through the inside of each heat exchange tube (309).