Double-tube-plate heat exchanger

Abstract

The utility model relates to the technical field of heat exchange equipment, in particular to a double-tube-plate heat exchanger which comprises a horizontally-arranged heat exchange shell, and tube plates, baffles, tube bundles, heat flow openings and supporting saddles are arranged on the heat exchange shell. A shell spacer bush is arranged on the inner wall of the heat exchange shell; a cold flow end socket and a backflow end socket are arranged at the two ends of the heat exchange shell in a sealed mode. The inner wall of the cold flow end socket and the inner wall of the backflow end socket are respectively provided with an end socket spacer bush, a horizontal partition plate set is arranged in the middle of the interior of the cold flow end socket, the partition plate set is of a two-layer structure and is communicated with the end socket spacer bushes, a connecting plate is arranged between two layers of plates of the partition plate set close to one side of the opening end of the cold flow end socket, and the upper end and the lower end of the cold flow end socket are respectively provided with cold flow openings in a communicated mode. The double-tube-plate heat exchanger disclosed by the utility model has higher heat preservation performance, so that the heat loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, specifically a double tube sheet heat exchanger. Background Technology

[0002] A heat exchanger is a device used for heat exchange, its main function being to transfer heat from one medium to another. It is commonly used for heating, cooling, and temperature regulation. The basic working principle of a heat exchanger is that it transfers energy through heat exchange between two or more different fluid media, and the mixing of different fluid media must be avoided during the heat exchange process.

[0003] Currently, heat exchangers are crucial equipment in industrial processes, heating, air conditioning, refrigeration, and chemical reactions. Heat exchangers are classified according to their structure into: shell-and-tube heat exchangers, plate heat exchangers, air coolers, finned tube heat exchangers, and plate-fin heat exchangers, etc. Among them, shell-and-tube heat exchangers consist of a shell and end caps, forming two isolated spaces: the shell side and the tube side, through which two different fluid media flow. The important isolation components between the shell side and the tube side are: the shell and the tube sheet and tube bundle installed on it, and the end caps and the baffles installed inside them.

[0004] However, conventional shell-and-tube heat exchangers with double tube sheets still have the following shortcomings:

[0005] 1. The shell and end caps are prone to heat loss;

[0006] 2. The temperature difference between the same fluid medium flowing on both sides of the partition leads to heat loss. Utility Model Content

[0007] In order to solve the technical problems existing in the background art, the present invention provides a double tube sheet heat exchanger with higher heat preservation performance, thereby reducing heat loss.

[0008] The technical solution adopted by this utility model is:

[0009] A dual tube sheet heat exchanger includes: a horizontally arranged heat exchange shell, tube sheets at both ends of the heat exchange shell, a baffle inside the heat exchange shell between the tube sheets, a tube bundle running through the tube sheets, a heat flow port connected to the upper end of the heat exchange shell, and a support saddle fixedly installed at the lower end of the heat exchange shell.

[0010] A shell spacer is provided on the inner wall of the heat exchange shell; a cold flow head and a reflux head are respectively sealed and connected at both ends of the heat exchange shell; a head spacer is provided on the inner wall of the cold flow head and the reflux head; a horizontal baffle assembly is provided in the middle of the cold flow head; the baffle assembly is configured as a two-layer structure and is connected to the head spacer; a connecting plate is provided between the two-layer baffle assembly; and cold flow ports are respectively provided at the upper and lower ends of the cold flow head.

[0011] Furthermore, the baffle is configured as a small circular cut, and multiple sets are arranged at intervals with alternating up and down notches inside the heat exchange shell.

[0012] Furthermore, shell flanges are respectively provided at the edges of both ends of the heat exchange shell.

[0013] Furthermore, a cold flow head flange is provided at the opening edge of the cold flow head;

[0014] A reflux head flange is provided at the opening edge of the reflux head;

[0015] The cold flow end flange and the return flow end flange are respectively sealed to the shell flanges at both ends of the heat exchange shell.

[0016] Furthermore, a sealing plate protrudes from the tube sheet on one side of the cold flow head.

[0017] Furthermore, a horizontal groove is provided on one side of the partition assembly and the connecting plate phase tube sheet;

[0018] The sealing plate is inserted into the transverse groove.

[0019] The beneficial effects of this novel double-tube sheet heat exchanger are as follows:

[0020] 1. By using shell spacers and head spacers, the heat exchange shell, cold flow head, and return flow head are reduced to reduce heat exchange with the outside environment;

[0021] 2. The heat exchange of the cold flow medium inside the cold flow head is reduced by using a two-layer baffle assembly;

[0022] 3. The positioning and sealing of the partition and tube sheet are achieved through the matching sealing plates and transverse grooves. Attached Figure Description

[0023] Figure 1 This is a three-dimensional exploded view of a double tube sheet heat exchanger provided by this utility model embodiment;

[0024] Figure 2 This is a three-dimensional sectional view of the heat exchange shell of a double tube sheet heat exchanger provided in this utility model embodiment;

[0025] Figure 3 This utility model provides a three-dimensional sectional view of the cold flow head of a double tube sheet heat exchanger.

[0026] Figure 4 This is a three-dimensional schematic diagram of the reflux head of a double tube sheet heat exchanger provided in this utility model embodiment.

[0027] In the picture:

[0028] 1. Heat exchange shell,

[0029] 10. Shell spacer; 11. Tube sheet; 12. End plate; 13. Tube bundle; 14. Baffle; 15. Shell flange; 16. Hot runner; 17. Support saddle.

[0030] 2. Cold flow end cap,

[0031] 20. Head spacer; 21. Diaphragm assembly; 22. Connecting plate; 25. Cold flow head flange; 26. Cold flow port.

[0032] 3. Reflow end cap,

[0033] 30. Reflux head flange. Detailed Implementation

[0034] To more clearly and explicitly illustrate the specific implementation objectives and methods of this utility model, the technical solution of this utility model will be fully described below. The described embodiments are only some embodiments of this utility model, not all embodiments. Without creative effort, all other embodiments based on the described embodiments of this utility model are within the protection scope of this utility model.

[0035] This utility model relates to a double tube sheet heat exchanger, such as... Figure 1 , Figure 2 As shown, it includes: a horizontally arranged heat exchange shell 1, with tube sheets 11 and shell flanges 15 respectively arranged at both ends of the heat exchange shell 1, and baffles 14 arranged inside the heat exchange shell 1 between the tube sheets 11. The baffles 14 are small-cut circles and are arranged in multiple sets at intervals with alternating notches inside the heat exchange shell 1. Tube bundles 13 are arranged through the tube sheets 11. A hot flow port 16 is connected to the upper end of the heat exchange shell 1, and a support saddle 17 is fixedly arranged at the lower end of the heat exchange shell 1. A sealing plate 12 is protruding from the tube sheet 11 on one side of the cold flow head 2, and the sealing plate 12 divides the tube bundle 13 into upper and lower parts.

[0036] like Figure 1 , Figure 2 As shown, a shell spacer 10 is provided on the inner wall of the heat exchange shell 1, and a cold flow head 2 and a reflux head 3 are respectively sealed and connected at both ends of the heat exchange shell 1.

[0037] like Figure 3As shown, a head spacer 20 is provided on the inner wall of the cold flow head 2. A horizontal baffle group 21 is provided in the middle of the cold flow head 2. The baffle group 21 is configured as a two-layer structure and is connected to the head spacer 20. A connecting plate 22 is provided between the two layers of the baffle group 21. The baffle group 21 divides the cold flow head 2 into upper and lower layers and is connected to the tube bundle 13 of the upper and lower parts respectively. A horizontal groove is provided on the side of the baffle group 21 and the connecting plate 22 facing the tube sheet 11. A sealing plate 12 is inserted into the groove. A cold flow head flange 25 is provided at the opening edge of the cold flow head 2 and is sealed to the shell flange 15 at the end of the heat exchange shell 1. Cold flow ports 26 are respectively provided at the upper and lower ends of the cold flow head 2.

[0038] like Figure 4 As shown, a head spacer 20 is provided on the inner wall of the cold reflux head 3, and a reflux head flange 30 is provided at the opening edge of the reflux head 3, which is sealed to the shell flange 15 at the end of the heat exchange shell 1.

[0039] Vacuum holes are provided on the outer walls of the heat exchange shell 1, the cold flow head 2, and the cold return head 3, respectively, and the vacuum holes connect the shell spacer 10 and the head spacer 20 to the vacuum unit.

[0040] In summary, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification. All equivalent variations and modifications of the shape, structure, features, and spirit described in the claims of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A double tube sheet heat exchanger comprising: The heat exchange shell (1) is horizontally arranged, both ends of the heat exchange shell (1) are respectively provided with tube sheets (11), baffles (14) are arranged in the heat exchange shell (1) between the tube sheets (11), tube bundles (13) are arranged through the tube sheets (11), a hot flow port (16) is arranged in communication with the upper end of the heat exchange shell (1), a support saddle (17) is fixedly arranged at the lower end of the heat exchange shell (1), characterized in that: A shell spacer sleeve (10) is arranged on the inner wall of the heat exchange shell (1); Cold flow heads (2) and reflux heads (3) are respectively and sealingly connected to both ends of the heat exchange shell (1); The inner walls of the cold flow heads (2) and the reflux heads (3) are respectively provided with head spacer sleeves (20), a horizontal baffle group (21) is arranged in the middle of the cold flow head (2), the baffle group (21) is arranged in a two-layer structure and communicates with the head spacer sleeve (20), a connecting plate (22) is arranged between the two-layer baffle group (21), and cold flow ports (26) are respectively arranged in communication with the upper and lower ends of the cold flow head (2).

2. The double-tube-sheet heat exchanger according to claim 1, characterized in that: The baffles (14) are arranged in the form of small circular segments and are arranged in multiple groups in the heat exchange shell (1) in an alternating manner.

3. The double-tube-sheet heat exchanger according to claim 1, characterized in that: Shell flanges (15) are respectively arranged at the edges of both ends of the heat exchange shell (1).

4. The double-tube-sheet heat exchanger according to claim 3, characterized in that: A cold flow head flange (25) is arranged at the opening edge of the cold flow head (2); A reflux head flange (30) is arranged at the opening edge of the reflux head (3); The cold flow head flange (25) and the reflux head flange (30) are respectively sealingly connected with the shell flanges (15) at both ends of the heat exchange shell (1).

5. The double-tube-sheet heat exchanger according to claim 1, characterized in that: An enclosure plate (12) is protrudingly arranged on the tube sheet (11) at one side of the cold flow head (2).

6. The double-tube-sheet heat exchanger according to claim 5, characterized in that: The baffle group (21) and the connecting plate (22) are provided with horizontal transverse grooves on the side facing the tube sheet (11); The enclosure plate (12) is sealingly inserted into the transverse grooves.

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