Heat exchanger fins for heating furnace flues

Abstract

This utility model relates to the field of heating furnace technology and discloses a heat exchange finned heat exchange tube for a heating furnace flue, including a first heat exchange tube with first heat exchange fins connected to its inner wall in a spiral arrangement; a second heat exchange tube is connected to the inner wall of the first heat exchange fins, with second heat exchange fins connected to its surface in a spiral arrangement; a support rod is connected to the surface of the first heat exchange tube, and an outer pipe is connected to the surface of the support rod. This utility model, through the spiral arrangement of the first heat exchange fins, increases the contact area with the flue gas, thereby improving heat exchange efficiency and solving the problem of low heat exchange efficiency. Simultaneously, through the spiral arrangement of the second heat exchange fins and the staggered arrangement of the second and first heat exchange fins, a double-layer heat exchange function can be achieved, further improving heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heating furnace technology, specifically to a heat exchange finned heat exchange tube used in the flue of a heating furnace. Background Technology

[0002] A heating furnace is a device that heats materials or workpieces to the rolling or forging temperature. With the continuous development of technology and people’s increasing awareness of environmental protection, the functions of heating furnaces are constantly being improved. When using a heating furnace, the waste heat of the flue needs to be recovered and reused, which requires the use of heat exchange fins and heat exchange tubes.

[0003] Existing heat exchange finned tubes do not have a double-layer heat exchange function, resulting in low heat exchange efficiency. This leads to insufficient utilization of waste heat in the flue, causing energy waste and inconvenience to users. Utility Model Content

[0004] The purpose of this invention is to provide a finned heat exchange tube for use in heating furnace flues, thereby solving the problems existing in traditional technical solutions.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a heat exchange finned heat exchange tube for a heating furnace flue, including a first heat exchange tube, the inner wall of which is connected to a first heat exchange fin.

[0007] The inner wall of the first heat exchange fin is connected to a second heat exchange tube, the surface of the second heat exchange tube is connected to a second heat exchange fin, the surface of the first heat exchange tube is connected to a support rod, and the surface of the support rod is connected to an outer pipe.

[0008] Furthermore, the first heat exchange fins are spirally distributed, and the first heat exchange fins are welded to the first heat exchange tube and the second heat exchange tube respectively.

[0009] Furthermore, the second heat exchange fins are spirally distributed, and the second heat exchange fins are welded to the second heat exchange tube.

[0010] Furthermore, the second heat exchange fins are staggered with the first heat exchange fins.

[0011] Furthermore, the diameter of the first heat exchange tube is larger than the diameter of the second heat exchange tube, and there is a certain distance between the first heat exchange tube and the second heat exchange tube.

[0012] Furthermore, the support rods are distributed at equal angles along the axial centerline of the outer pipe, and the support rods are welded to the outer pipe and the first heat exchange tube respectively.

[0013] Furthermore, the diameter of the outer pipe is larger than the diameter of the first heat exchange tube, and there is a certain distance between the outer pipe and the first heat exchange tube.

[0014] This utility model has the following beneficial effects:

[0015] (1) The present invention can increase the contact area with flue gas by means of the spiral distribution of the first heat exchange fins, thereby improving the heat exchange efficiency and solving the problem of low heat exchange efficiency.

[0016] (2) This utility model can achieve double-layer heat exchange function through the spiral distribution of the second heat exchange fins and the staggered distribution of the second heat exchange fins and the first heat exchange fins, thereby further improving the heat exchange efficiency.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal cross-section of the external pipe of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal cross-section of the first heat exchange tube of this utility model;

[0022] Figure 4 This is a schematic planar sectional view of the present invention;

[0023] Figure 5 This is a side view diagram of the present invention;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] In the diagram: 1. External pipe; 2. Support rod; 3. First heat exchange tube; 4. First heat exchange fin; 5. Second heat exchange tube; 6. Second heat exchange fin. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please see Figures 1-5 As shown, the heat exchange finned heat exchange tube for the heating furnace flue includes a first heat exchange tube 3, the inner wall of which is connected to a first heat exchange fin 4. The first heat exchange fin 4 is spirally distributed and welded to the first heat exchange tube 3 and the second heat exchange tube 5 respectively. The spiral distribution of the first heat exchange fin 4 can increase the contact area with the flue gas, thereby improving the heat exchange efficiency and solving the problem of low heat exchange efficiency.

[0029] Example 2

[0030] Based on Embodiment 1, the preferred embodiment of the heat exchange finned heat exchange tube for a heating furnace flue provided by this utility model is available for reference. Figures 1-5 As shown, the inner wall of the first heat exchange fin 4 is connected to the second heat exchange tube 5, and the surface of the second heat exchange tube 5 is connected to the second heat exchange fin 6. The second heat exchange fin 6 is spirally distributed and welded to the second heat exchange tube 5. The second heat exchange fin 6 and the first heat exchange fin 4 are staggered. Through the spiral distribution of the second heat exchange fin 6 and the staggered distribution of the second heat exchange fin 6 and the first heat exchange fin 4, the function of double-layer heat exchange can be realized, which further improves the heat exchange efficiency.

[0031] The surface of the first heat exchange tube 3 is connected to a support rod 2, and the surface of the support rod 2 is connected to an outer pipe 1. The support rod 2 is distributed at equal angles along the axial center line of the outer pipe 1, and the support rod 2 is welded to the outer pipe 1 and the first heat exchange tube 3 respectively, thereby facilitating the support work of the outer pipe 1.

[0032] The diameter of the first heat exchange tube 3 is larger than the diameter of the second heat exchange tube 5, and there is a certain distance between the first heat exchange tube 3 and the second heat exchange tube 5, which facilitates the flow of flue gas.

[0033] The diameter of the outer pipe 1 is larger than the diameter of the first heat exchange tube 3, and there is a certain distance between the outer pipe 1 and the first heat exchange tube 3, which facilitates the flow of the second heat exchange medium.

[0034] Working principle: During use, the flue gas first flows through the channel formed between the first heat exchange tube 3 and the second heat exchange tube 5, and the heat is transferred through the first heat exchange tube 3 to the channel formed between the outer pipe 1 and the first heat exchange tube 3. At the same time, the heat is transferred through the second heat exchange fins 6 to the channel inside the second heat exchange tube 5, thus enabling double-layer heat exchange and significantly improving heat exchange efficiency.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A finned heat exchanger tube for a heating furnace flue, comprising a first heat exchanger tube (3), characterized in that: The inner wall of the first heat exchange tube (3) is connected to the first heat exchange fin (4); The inner wall of the first heat exchange fin (4) is connected to the second heat exchange tube (5), the surface of the second heat exchange tube (5) is connected to the second heat exchange fin (6), the surface of the first heat exchange tube (3) is connected to the support rod (2), and the surface of the support rod (2) is connected to the outer pipe (1).

2. The heat exchange finned heat exchange tube for a heating furnace flue according to claim 1, characterized in that: The first heat exchange fins (4) are spirally distributed, and the first heat exchange fins (4) are welded to the first heat exchange tube (3) and the second heat exchange tube (5) respectively.

3. The heat exchange finned heat exchange tube for a heating furnace flue according to claim 1, characterized in that: The second heat exchange fins (6) are spirally distributed and are welded to the second heat exchange tube (5).

4. The finned heat exchanger tube for a heating furnace flue according to claim 1, characterized in that: The second heat exchange fin (6) and the first heat exchange fin (4) are staggered.

5. The heat exchange finned heat exchange tube for a heating furnace flue according to claim 1, characterized in that: The diameter of the first heat exchange tube (3) is larger than the diameter of the second heat exchange tube (5), and there is a certain distance between the first heat exchange tube (3) and the second heat exchange tube (5).

6. The finned heat exchanger tube for a heating furnace flue according to claim 1, characterized in that: The support rods (2) are distributed at equal angles along the axial center line of the outer pipe (1), and the support rods (2) are welded to the outer pipe (1) and the first heat exchange tube (3) respectively.

7. The heat exchange finned heat exchange tube for a heating furnace flue according to claim 1, characterized in that: The diameter of the outer pipe (1) is larger than the diameter of the first heat exchange tube (3), and there is a certain distance between the outer pipe (1) and the first heat exchange tube (3).

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