Simple and efficient shell-and-tube heat exchanger

Abstract

The utility model discloses a simple and efficient shell-and-tube heat exchanger which comprises a shell, a heat transfer tube bundle, a tube plate and a baffle plate, and is characterized in that the upper side edge and the lower side edge in the shell are respectively provided with a sliding groove, a hollow-out fixing frame is installed outside the heat transfer tube bundle, the left side and the right side of the hollow-out fixing frame are respectively provided with an inserting strip, and the inserting strips are arranged on the left side and the right side of the hollow-out fixing frame. The inserting strips are arranged to be of a T-shaped structure, the hollowed-out fixing frames are inserted into the sliding grooves through the inserting strips and fixed to the upper side and the lower side in the shell, and the multiple baffle plates are arranged. The S-shaped tube bundle is reasonable in structural design and convenient to use, the circulation time of media in the tube bundle can be prolonged through the S-shaped tube bundle, the heat transfer surface of the tube bundle is improved, the heat exchange efficiency of the shell-and-tube heat exchanger is further improved, and meanwhile the shell-and-tube heat exchanger can be conveniently and rapidly installed.

Description

Technical Field

[0001] The utility model relates to the field of heat exchangers, in particular to a simple and efficient shell-and-tube heat exchanger. Background Art

[0002] The shell-and-tube heat exchanger, also known as the tubular heat exchanger, is a shell-and-tube heat exchanger with the wall surface of the tube bundle enclosed in the shell as the heat transfer surface, and mainly consists of components such as a shell, a heat transfer tube bundle, a tube sheet and a baffle plate.

[0003] At present, the tube bundle of the shell-and-tube heat exchanger is usually a direct-flow tube with a straight flow, which results in a small heat transfer surface of the tube bundle and poor heat exchange effect. Therefore, it is necessary to install more tube bundles in the tube box to increase the heat transfer surface, which is rather cumbersome and inconvenient, not conducive to the simple and rapid installation of the shell-and-tube heat exchanger and with low heat exchange efficiency. Therefore, improvement is still needed. Summary of the Utility Model

[0004] The utility model provides a simple and efficient shell-and-tube heat exchanger to solve the above-mentioned problems, including a shell, a heat transfer tube bundle, a tube sheet and a baffle plate. Sliding grooves are arranged on the upper and lower sides of the inside of the shell. A hollow fixed frame is installed outside the heat transfer tube bundle. Insertion strips are arranged on the left and right sides of the hollow fixed frame, and the insertion strips are arranged in a T-shaped structure. The hollow fixed frame is fixed on the upper and lower sides inside the shell by inserting the insertion strips into the sliding grooves. A plurality of baffle plates are provided, and the plurality of baffle plates are installed between the two hollow fixed frames inside the shell. A support heat transfer tube penetrates through the center position of the baffle plate. The tube sheet includes a front tube sheet and a rear tube sheet, and the front tube sheet and the rear tube sheet are respectively arranged at the front and rear ends of the shell. The front tube sheet and the rear tube sheet have the same structure. A plurality of flow dividing tubes are connected and arranged on both the front tube sheet and the rear tube sheet. The flow dividing tubes on the front tube sheet are communicated with the cold medium inlet, the flow dividing tubes on the rear tube sheet are communicated with the cold medium outlet, and the flow dividing tubes on the front tube sheet and the rear tube sheet are respectively communicated with the two heat transfer tube bundles and the support heat transfer tube.

[0005] Preferably, both the shell and the baffle plate are irregular cylindrical structures with straight upper and lower edges and arc-shaped left and right edges. Notch openings are formed on the upper and lower sides of the baffle plate. A hot medium inlet and a hot medium outlet are arranged on the shell.

[0006] Preferably, the heat transfer tube bundle is arranged as a bent tube with an S-shaped structure.

[0007] The beneficial effects of the utility model are as follows: The structure of the utility model is reasonably designed and convenient to use. The S-shaped tube bundle can increase the flow time of the medium in the tube bundle, improve the heat transfer surface of the tube bundle, and further improve the heat exchange efficiency of the shell-and-tube heat exchanger. At the same time, the utility model can also facilitate the rapid installation of the shell-and-tube heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present utility model will be described by way of examples with reference to the accompanying drawings, where:

[0009] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0010] Figure 2 is a schematic front view structure diagram of the present utility model;

[0011] Figure 3 is a schematic top view structure diagram of the hollow fixed frame of the present utility model;

[0012] Figure 4 is a schematic front view structure diagram of the hollow fixed frame of the present utility model;

[0013] Figure 5 is a schematic front view structure diagram of the baffle plate of the present utility model;

[0014] In the figure: 1. Shell; 2. Front tube sheet; 3. Rear tube sheet; 4. Shunt tube; 5. Cold medium inlet; 6. Cold medium outlet; 7. Hot medium inlet; 8. Hot medium outlet; 9. Support heat transfer tube; 10. Baffle plate; 11. Heat transfer tube bundle; 12. Hollow fixed frame; 13. Insert bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0016] Any feature of this specification, unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0017] Such as Figure 1 、 2, a simple and efficient shell-and-tube heat exchanger shown in Figures 3, 4, and 5, includes a shell 1, a heat transfer tube bundle 11, tube sheets, and baffle plates 10. On the upper and lower sides of the shell 1, chutes are provided. An openwork fixed frame 12 is installed outside the heat transfer tube bundle 11. On the left and right sides of the openwork fixed frame 12, insertion strips 13 are provided. The insertion strips 13 are arranged in a T-shaped structure. The openwork fixed frame 12 is fixed on the upper and lower sides inside the shell 1 by inserting the insertion strips 13 into the chutes. A number of baffle plates 10 are provided, and the number of baffle plates 10 is installed between the two openwork fixed frames 12 inside the shell 1. A support heat transfer tube 9 is passed through the center position of the baffle plate 10. The tube sheets include a front tube sheet 2 and a rear tube sheet 3, and the front tube sheet 2 and the rear tube sheet 3 are respectively arranged at the front and rear ends of the shell 1. The front tube sheet 2 and the rear tube sheet 3 have the same structure. A plurality of flow dividing tubes 4 are connected and arranged on both the front tube sheet 2 and the rear tube sheet 3. The flow dividing tubes 4 on the front tube sheet 2 are communicated with a cold medium inlet 5, and the flow dividing tubes 4 on the rear tube sheet 3 are communicated with a cold medium outlet 6. The flow dividing tubes 4 on the front tube sheet 2 and the rear tube sheet 3 are respectively communicated with the two heat transfer tube bundles 11 and the support heat transfer tube 9.

[0018] Both the shell 1 and the baffle plate 10 are of an irregular cylindrical structure with straight upper and lower edges and arc-shaped left and right edges. Notch openings are provided on the upper and lower sides of the baffle plate 10. A hot medium inlet 7 and a hot medium outlet 8 are provided on the shell 1.

[0019] The heat transfer tube bundle 11 is arranged as a bent tube with an S-shaped structure.

[0020] The so-called openwork fixed frame 12 includes upper and lower fixed frames, and a card slot for placing the heat transfer tube bundle 11 is provided on the fixed frame.

[0021] During use, the heat transfer tube bundle 11 is placed in the openwork fixed frame 12, and then the heat transfer tube bundle 11 is fixed by bolts. After that, the openwork fixed frame 12 with the heat transfer tube bundle 11 is installed on the upper and lower sides inside the shell 1 through the T-shaped insertion strips 13. After the heat transfer tube bundle 11 is installed, the notch openings of the baffle plate 10 are made to correspond to the T-shaped insertion strips 13, so that the baffle plate 10 is installed between the two openwork fixed frames 12. Then, the support heat transfer tube 9 is passed through the middle of the baffle plate 10. After the support heat transfer tube 9 is installed, the front tube sheet 2 and the rear tube sheet 3 are installed on the shell 1, and the flow dividing tubes 4 are respectively connected to the two heat transfer tube bundles 11 and the support heat transfer tube 9, thus completing the installation.

[0022] The traditional tube bundle 11 arranged as a bent tube with an S-shaped structure can increase the flow path of the medium and increase the heat transfer surface of the heat transfer tube bundle 11, thereby improving the heat transfer efficiency of the heat exchanger.

[0023] The T-shaped inserts 13 and the slots are arranged to facilitate the rapid installation of the heat transfer tube bundle 11.

[0024] Notches are provided on the upper and lower sides of the baffle 10, which can facilitate installation on the one hand and also facilitate the fixation of the baffle 10 on the other hand.

[0025] The beneficial effects of the present utility model are as follows: The structure of the present utility model is reasonably designed and convenient to use. The S-shaped tube bundle can increase the flow time of the medium in the tube bundle, improve the heat transfer surface of the tube bundle, and thus improve the heat exchange efficiency of the shell-and-tube heat exchanger. At the same time, the present utility model can also facilitate the rapid installation of the shell-and-tube heat exchanger.

[0026] The present utility model is not limited to the foregoing specific embodiments. The present utility model extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

Claims

1. A simple and efficient shell-and-tube heat exchanger, comprising a shell (1), a heat transfer tube bundle (11), tube sheets and baffle plates (10), characterized in that, Chutes are provided on both the upper and lower sides inside the housing (1). An openwork fixed frame (12) is installed outside the heat transfer tube bundle (11). Insertion strips (13) are provided on the left and right sides of the openwork fixed frame (12). The insertion strips (13) are arranged in a T-shaped structure. The openwork fixed frame (12) is fixed on the upper and lower sides inside the housing (1) by inserting the insertion strips (13) into the chutes. A plurality of baffle plates (10) are provided. The plurality of baffle plates (10) are installed between two openwork fixed frames (12) inside the housing (1). A support heat transfer tube (9) passes through the center position of the baffle plate (10). The tube sheet includes a front tube sheet (2) and a rear tube sheet (3), and the front tube sheet (2) and the rear tube sheet (3) are respectively arranged at the front and rear ends of the housing (1). The front tube sheet (2) and the rear tube sheet (3) have the same structure. A plurality of flow dividing tubes (4) are connected and arranged on both the front tube sheet (2) and the rear tube sheet (3). The flow dividing tubes (4) on the front tube sheet (2) are communicated with the cold medium inlet (5). The flow dividing tubes (4) on the rear tube sheet (3) are communicated with the cold medium outlet (6). The flow dividing tubes (4) on the front tube sheet (2) and the rear tube sheet (3) are respectively communicated with two heat transfer tube bundles (11) and the support heat transfer tube (9).

2. A simple and efficient shell-and-tube heat exchanger according to claim 1, characterized in that, Both the housing (1) and the baffle plate (10) are of an irregular cylindrical structure with straight upper and lower edges and arc-shaped left and right edges. Notch openings are provided on the upper and lower sides of the baffle plate (10). A hot medium inlet (7) and a hot medium outlet (8) are provided on the housing (1).

3. The simple and efficient shell-and-tube heat exchanger according to claim 1, characterized in that, The heat transfer tube bundle (11) is provided as a bent tube with an S-shaped structure.

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