Finned tube and gasifier

Abstract

The utility model discloses a finned tube and a gasifier, and relates to the technical field of gasifiers, the finned tube comprises a heat exchange tube and a plurality of fins, and the plurality of fins are arranged on the peripheral side of the heat exchange tube; the fins extend from the annular side of the heat exchange tube to the side away from the heat exchange tube. The sections of the fins along the axial direction of the heat exchange tube are arc-shaped; according to the utility model, the arc-shaped fins are arranged on the annular surface of the heat exchange tube, so that the heat exchange area of the fins is larger under the same diameter of the finned tube; after the arc-shaped fins are frosted, the binding force between frost and the fins is weaker than that of straight-plate-shaped fins, and defrosting is easy; the straight-plate-shaped fins shrink when being connected and used when being cooled, tensile stress exists between the fins, the phenomena that connecting points fall off, the fins deform and distort are caused, and certain potential safety hazards exist, and the arc-shaped fins have certain flexibility, so that the probability of occurrence of the situations can be reduced and avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gasifiers, in particular to a fin tube and a gasifier. Background Art

[0002] A vaporizer is a device used to heat liquid gas into gas. Simply put, cold liquid gas becomes gaseous gas after passing through the vaporizer. The heating can be indirect (steam heating vaporizer, hot water bath vaporizer, natural ventilation air bath vaporizer, forced ventilation vaporizer, electric heating vaporizer, solid heat conduction vaporizer or heat transfer fluid) or direct (hot gas or submerged combustion).

[0003] Fin tubes are the core components of most gasifiers. They absorb heat to heat the fluid in the fin tubes, so that the fluid in the fin tubes is converted from liquid to gas. The fin shape of the fin tubes in the prior art is straight plate-shaped. Due to the limited diameter of the fin tubes, the heat exchange area of ​​the straight plate-shaped fins is limited. In addition, the straight plate-shaped fins are prone to deformation after long-term use, which affects the gasification effect and fin strength.

[0004] In view of this, a fin tube and a gasifier are urgently needed. Summary of the invention

[0005] In view of the problems existing in the prior art, the utility model solves the problems with the following technical structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fin tube comprises: a heat exchange tube and a plurality of fins, wherein the plurality of fins are arranged on the circumference of the heat exchange tube;

[0008] The fins extend from the ring side of the heat exchange tube to a side away from the heat exchange tube;

[0009] The cross section of the fin along the axial direction of the heat exchange tube is arc-shaped.

[0010] It is further characterized in that

[0011] The plurality of fins are evenly distributed around the circumference.

[0012] The fins include a plurality of main fins and a plurality of auxiliary fins. The main fins and the auxiliary fins are arranged at intervals. The suspended ends of the main fins are provided with connecting parts that are convenient for connecting with connecting pieces.

[0013] The connecting portion is cylindrical.

[0014] The thickness of the fin is 1 mm to 3 mm.

[0015] The inner diameter of the heat exchange tube is 18 mm to 30 mm.

[0016] The thickness of the heat exchange tube is 2 mm to 5 mm.

[0017] The curvatures of the plurality of fins are different.

[0018] The curvatures of the multiple fins are the same.

[0019] A gasifier comprises the fin tube.

[0020] The above structure of the utility model can achieve the following beneficial effects:

[0021] By setting arc-shaped fins on the annular surface of the heat exchange tube, the heat exchange area of ​​the fins is larger under the same fin tube diameter; after the arc-shaped fins are frosted, the bonding force between the frost and the fins is weaker than that of straight plate-shaped fins, and they are easier to defrost; and the straight plate-shaped fins shrink when they are connected and used in cold weather, and there is tensile stress between the fins, which leads to the connection points falling off, the fins deforming and twisting, which poses certain safety hazards. The arc-shaped fins have a certain elasticity, which can reduce and avoid the probability of these situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the first embodiment.

[0023] In the figure: 1. heat exchange tube; 2. fin; 21. main fin; 22. auxiliary fin; 3. connection part. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0026] The following is combined with Figure 1 This application is described in further detail.

[0027] Example 1, reference Figure 1 A fin tube shown includes: a heat exchange tube 1 and a plurality of fins 2, wherein the plurality of fins 2 are arranged on the circumferential side of the heat exchange tube 1; the fins 2 extend from the annular side of the heat exchange tube 1 to the side away from the heat exchange tube 1; the cross-section of the fins 2 along the axial direction of the heat exchange tube 1 is arc-shaped, so that by arranging the arc-shaped fins 2 on the annular surface of the heat exchange tube 1, under the same fin tube diameter, the heat exchange area of ​​the fins 2 is larger; and after the arc-shaped fins 2 are frosted, the bonding force between the frost and the fins 2 is weaker than that of the straight plate-shaped fins, and it is easy to defrost; and the straight plate-shaped fins shrink when they are connected for use, and there is tensile stress between the fins, resulting in the connection points falling off, the fins deforming, and twisting, which has certain safety hazards, while the arc-shaped fins 2 have a certain elasticity, which can reduce and avoid the probability of these situations.

[0028] refer to Figure 1 As shown, in order to ensure the uniformity and efficiency of heat exchange, multiple fins 2 are evenly distributed in a circle so as to be evenly distributed in the thermal environment; in order to facilitate the connection between the fins 2 and the connecting pieces, the fins 2 include multiple main fins 21 and multiple auxiliary fins 22, the main fins 21 and the auxiliary fins 22 are arranged at intervals, and the suspended end of the main fin 21 is provided with a connecting portion 3, which is preferably cylindrical. Of course, in actual production, it can be adaptively adjusted according to needs, such as a diamond shape, etc. The extension direction of the connecting portion 3 is consistent with the extension direction of the heat exchange tube 1, and the setting of the connecting portion 3 is convenient for connection and fixation with the connecting piece.

[0029] The thickness of the fin 2 is 1 mm to 3 mm.

[0030] The inner diameter of the heat exchange tube 1 is 18 mm to 30 mm.

[0031] The thickness of the heat exchange tube 1 is 2 mm to 5 mm.

[0032] In actual production and use, the multiple fins 2 can be set to different curvatures or partially different curvatures according to needs, or the multiple fins 2 can be set to the same curvature.

[0033] Embodiment 2: A gasifier using the above-mentioned finned tubes has a larger heat exchange area at the same diameter. Therefore, the gasifier using the finned tubes recorded in the present application has a higher heat exchange efficiency at the same volume; or at the same heat exchange efficiency, the gasifier using the finned tubes recorded in the present application has a smaller volume (the heat exchange efficiency of the finned tubes recorded in the present application is about 15% higher than that of the straight plate fins. Therefore, the heat exchange efficiency of the gasifier using 10 straight plate fins in the prior art is only required to be 9 when using the finned tubes recorded in the present application, thereby reducing the volume of the gasifier and reducing the production cost). The finned tubes recorded in the present application also have the advantages of not being easy to deform and having high strength, thereby reducing the damage rate of the gasifier using the finned tubes recorded in the present application and extending the service life.

[0034] In summary, by setting arc-shaped fins 2 on the annular surface of the heat exchange tube 1, the heat exchange area of ​​the fin 2 is larger under the same diameter of the fin tube; after the arc-shaped fin 2 is frosted, the bonding force between the frost and the fin 2 is weaker than that of the straight plate fin, and it is easy to defrost; and the straight plate fin shrinks when it is connected and used, and there is tensile stress between the fins, which leads to the connection point falling off, the fin deformation, and twisting, which has certain safety hazards, while the arc-shaped fin has a certain elasticity, which can reduce and avoid the probability of these situations.

[0035] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A finned tube, characterized in that: include: A heat exchange tube (1) and a plurality of fins (2), wherein the plurality of fins (2) are arranged on the circumference of the heat exchange tube (1); The fin (2) extends from the ring side of the heat exchange tube (1) to a side away from the heat exchange tube (1); The cross section of the fin (2) along the axial direction of the heat exchange tube (1) is arc-shaped.

2. The fin tube according to claim 1, characterized in that: The plurality of fins (2) are evenly distributed around the circumference.

3. The fin tube according to claim 1, characterized in that: The fins (2) comprise a plurality of main fins (21) and a plurality of auxiliary fins (22); the main fins (21) and the auxiliary fins (22) are arranged at intervals; and a connecting portion (3) is provided at a suspended end of the main fin (21) for facilitating connection with a connecting sheet.

4. The fin tube according to claim 3, characterized in that: The connecting portion (3) is cylindrical.

5. The fin tube according to claim 1, characterized in that: The thickness of the fin (2) is 1 mm to 3 mm.

6. The fin tube according to claim 1, characterized in that: The inner diameter of the heat exchange tube (1) is 18 mm to 30 mm.

7. The fin tube according to claim 1, characterized in that: The thickness of the heat exchange tube (1) is 2 mm to 5 mm.

8. The fin tube according to claim 1, characterized in that: The curvatures of the multiple fins (2) are different.

9. The fin tube according to claim 1, characterized in that: The curvatures of the multiple fins (2) are the same.

10. A gasifier, characterized in that: The invention comprises the fin tube according to any one of claims 1 to 9.

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