Heat exchange tube connecting structure of heat exchanger

Abstract

The utility model provides a heat exchange tube connecting structure of a heat exchanger, which comprises a tank body of the heat exchanger, a left tube box and a right tube box, the tank body is arranged between the left tube box and the right tube box, a heat exchange cavity is arranged on the tank body, a left tube plate is arranged between the left tube box and the tank body, a right tube plate is arranged between the right tube box and the tank body, and the left tube plate and the right tube plate are arranged in parallel. A heat exchange tube connected with the left tube plate and the right tube plate is arranged in the heat exchange cavity, a mounting hole is formed in the left tube plate or the right tube plate, the heat exchange tube is mounted on the mounting hole, an expansion area and a welding area are arranged on the heat exchange tube, the expansion area is far away from the heat exchange cavity and abuts against the inner wall of the mounting hole, the expansion area is close to the heat exchange cavity, and the welding area abuts against the inner wall of the mounting hole. The welding areas and the mounting holes are welded together, the heat exchange tubes are mounted on the left tube plate and the right tube plate, and the heat exchange tubes mounted at the mounting holes of the left tube plate and the right tube plate are provided with the expansion areas and the welding areas, so that the heat exchange tubes are mounted firmly and hermetically, and the heat exchanger is safer and more reliable.

Description

Technical Field

[0001] This utility model relates to a heat exchanger tube connection structure. Background Technology

[0002] The working principle of a heat exchanger is mainly to transfer energy by exchanging heat between two fluids at different temperatures. Heat exchangers have a unique design structure and are characterized by high efficiency, energy saving, and reliability, making them widely used in chemical, petroleum, metallurgical, and food industries. Existing heat exchange structures use heat exchange tubes mounted on a throttling plate, which makes the proper sealing of these tubes during installation particularly important. Utility Model Content

[0003] This utility model proposes a heat exchanger tube connection structure, including a tank body, a left tube box, and a right tube box. The tank body is disposed between the left and right tube boxes, and a heat exchange cavity is provided on the tank body. A left tube sheet is disposed between the left tube box and the tank body, and a right tube sheet is disposed between the right tube box and the tank body. A heat exchange tube connecting the left and right tube sheets is disposed in the heat exchange cavity. An installation hole is provided on the left or right tube sheet. The heat exchange tube is installed on the installation hole and has an expansion zone and a welding zone. The welding zone is away from the heat exchange cavity and abuts against the inner wall of the installation hole. The expansion zone is close to the heat exchange cavity, and the welding zone is welded together with the installation hole.

[0004] In one or more embodiments, the expansion zone is located within the mounting hole, and the diameter of the expansion zone is larger than the diameter of the non-expansion zone on the heat exchange tube.

[0005] In one or more embodiments, the left tube box and the left tube sheet are fixedly connected by screws.

[0006] In one or more embodiments, the right tube box and the left tube sheet are fixedly connected by screws.

[0007] In one or more embodiments, a plurality of throttling plates are provided inside the heat exchange cavity, and the heat exchange tube passes through the throttling plates.

[0008] The beneficial effects of this utility model are as follows: the heat exchange tubes are installed on the left and right tube sheets, and the heat exchange tubes installed at the mounting holes on the left and right tube sheets are provided with an expansion zone and a welding zone. The expansion zone abuts against the inner wall of the mounting hole to form a first seal, and the welding zone achieves a second seal, which makes the heat exchange tubes firmly installed and sealed, making the heat exchanger safer and more reliable. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the heat exchanger tube connection structure.

[0010] Figure 2This is a schematic diagram of the mounting holes for the heat exchanger tube connection structure. Detailed Implementation

[0011] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution:

[0012] See appendix Figure 1-2 A heat exchanger tube connection structure includes a tank body 1, a left tube box 2, and a right tube box 3. The tank body 1 is located between the left tube box 2 and the right tube box 3. A heat exchange chamber 11 is provided on the tank body 1. A left tube sheet 4 is provided between the left tube box 2 and the tank body 1. A right tube sheet 5 is provided between the right tube box 3 and the tank body 1. A heat exchange tube 7 connecting the left tube sheet 4 and the right tube sheet 5 is provided in the heat exchange chamber 11. An installation hole 6 is provided on the left tube sheet 4 or the right tube sheet 5. The heat exchange tube 7 is installed on the installation hole 6 and has an expansion zone 71 and a welding zone 72. The welding zone 72 is away from the heat exchange chamber 11 and abuts against the inner wall of the installation hole 6. The expansion zone 71 is close to the heat exchange chamber 11. The welding zone 72 is welded together with the installation hole 6.

[0013] Furthermore, the expansion zone 71 is located within the mounting hole 6, and the diameter of the expansion zone 71 is larger than the diameter of the non-expansion zone on the heat exchange tube 7.

[0014] Furthermore, the left tube box 2 and the left tube plate 4 are fixedly connected by screws.

[0015] Furthermore, the right tube box 3 and the left tube sheet 5 are fixedly connected by screws.

[0016] Furthermore, a plurality of throttling plates 8 are provided inside the heat exchange cavity 11, and the heat exchange tube 7 passes through the throttling plates 8.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0022] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. A heat exchanger tube connection structure, characterized in that, The device includes a heat exchanger tank, a left tube box, and a right tube box. The tank is located between the left and right tube boxes and has a heat exchange chamber. A left tube sheet is located between the left tube box and the tank, and a right tube sheet is located between the right tube box and the tank. Heat exchange tubes connecting the left and right tube sheets are installed in the heat exchange chamber. Mounting holes are provided on the left or right tube sheet. The heat exchange tubes are installed in the mounting holes and have an expansion zone and a welding zone. The welding zone is away from the heat exchange chamber and abuts against the inner wall of the mounting hole. The expansion zone is close to the heat exchange chamber, and the welding zone is welded to the mounting hole.

2. The heat exchanger tube connection structure according to claim 1, characterized in that, The expansion zone is located inside the mounting hole, and the diameter of the expansion zone is larger than the diameter of the non-expansion zone on the heat exchange tube.

3. The heat exchanger tube connection structure according to claim 1, characterized in that, The left tube box and the left tube plate are fixedly connected by screws.

4. The heat exchanger tube connection structure according to claim 1, characterized in that, The right tube box and the left tube sheet are fixedly connected by screws.

5. The heat exchanger tube connection structure according to claim 1, characterized in that, The heat exchange chamber is provided with multiple throttling plates, and the heat exchange tube passes through the throttling plates.

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