CN215114143U - Fin full-penetration type heat exchange tube - Google Patents

Abstract

The utility model provides a fin runs through formula heat exchange tube entirely belongs to heat exchange tube technical field. The heat exchange tube is a ribbed tube with longitudinal fins inside and outside, the number of the inner fins and the number of the outer fins are the same, the inner fins and the outer fins correspond to each other one by one inside the tube, and the longitudinal fins are embedded on the tube wall after penetrating through the tube wall. The specific number of the fins is determined according to the requirement, the inner fins and the outer fins are uniformly distributed along the circumference of the fin tube, and the number of the fins of the fin tube is one, two or more, and the like; the ribbed tube wall thickness is generally no greater than 6 mm. The heat exchange tube has the advantages of simple structure, high heat exchange efficiency, good forming quality, low cost and the like, and is easy to produce.

Description

Fin full-penetration type heat exchange tube

Technical Field

The utility model relates to a heat exchange tube technical field especially indicates a fin runs through formula heat exchange tube entirely.

Background

At present, a boiler air preheater is mostly provided with a finned heat exchanger, the finned heat exchanger adopts finned tubes as a main heat exchange device, and has the remarkable characteristics that the heat exchange area in the finned tubes is small, the heat exchange area outside the finned tubes is large, the wall thickness is large, meanwhile, the heat exchange temperature difference is large, in addition, the fins of the finned tubes are radial fins, and fluid inside and outside the finned tubes can only exchange heat in a cross way at 90 degrees during heat exchange, so that the heat exchange efficiency is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a fin runs through formula heat exchange tube entirely.

The heat exchange tube comprises a finned tube and fins, wherein each fin penetrates through the wall of the finned tube to form an inner fin and an outer fin, the inner fins and the outer fins are uniformly distributed along the wall of the finned tube, the inner fins can be completely or partially intersected together or not intersected together, the inner fins and the outer fins are longitudinally distributed, and the wall thickness of the finned tube is generally not more than 6 mm. The heat exchange tube is used for heat exchange between flue gas or other gases (or fluid media with low heat conductivity coefficient).

The inside of the ribbed tube is communicated with smoke, air or other fluid media, the outside of the ribbed tube is correspondingly communicated with the smoke, the air or other fluid media, and two different fluid media inside and outside the ribbed tube flow in 180-degree reverse directions.

The finned tube can be round tube, rectangle or other shapes, but each fin must penetrate through the tube wall to form inner fin and outer fin, and the adjustment of the inner and outer heat exchange areas of the finned tube is mainly adjusted by the height and number of the fins.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

in the above scheme, the heat exchange tube has the advantages of simple structure, high heat exchange efficiency, good molding quality, low cost and the like, and is easy to produce.

Drawings

Fig. 1 is a schematic structural diagram of a fin-type fully-penetrating heat exchange tube of the present invention, wherein (a) is in the form one, (b) is in the form two, (c) is in the form three, (d) is in the form four, (e) is in the form five, (f) is in the form six, (g) is in the form seven, and (h) is in the form eight.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The utility model provides a fin runs through formula heat exchange tube entirely.

This heat exchange tube includes fin pipe, inner fin and outer fin, and inner fin and outer fin are along fin pipe circumference evenly distributed, and inner fin and outer fin are evenly separated by the fin of fin pipe, and inner fin and outer fin longitudinal distribution, fin pipe wall thickness are not more than 6 mm.

The heat exchange tube is used for heat exchange between flue gas (or other fluid media with low heat conductivity coefficient).

The inside of the ribbed tube is communicated with flue gas and air (or other fluid media), the outside of the ribbed tube is correspondingly communicated with the air and the flue gas (or other fluid media), and the two fluid media inside and outside the ribbed tube reversely flow.

The ribbed tube is a round tube, a square tube or other tubes.

The thickness of the inner fin and the outer fin does not exceed the thickness of the tube wall of the ribbed tube.

In the specific design, the form of the heat exchange tube can be designed into various forms according to the needs, as shown in fig. 1, the heat exchange tube is in various common forms, fins of the heat exchange tube can be one, two or more, and the inner fins and the outer fins are correspondingly distributed on the tube wall of the finned tube.

In practical design, the finned heat exchange tube is a finned tube with a wall thickness not greater than 6mm and longitudinal fins inside and outside, and the inner fins and the outer fins are in longitudinal direction (i.e. in the same direction as the heat exchange tube).

In the heat exchange tube, smoke, air or other fluid media respectively circulate inside and outside the rib type heat exchange tube, the fluid media for heat exchange can circulate at any side, and the internal fluid media and the external fluid media reversely flow.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (3)

1. The utility model provides a fin runs through formula heat exchange tube entirely which characterized in that: the fin tube comprises a fin tube, inner fins and outer fins, wherein the inner fins and the outer fins are distributed along the tube wall of the fin tube, the inner fins and the outer fins are in one-to-one correspondence, the corresponding inner fins and the corresponding outer fins can be regarded as longitudinal fins penetrating through the tube wall, the fins are distributed along the axial direction of the fin tube, and the wall thickness of the fin tube is not more than 6 mm; the direction of the inner fin and the outer fin is the same as that of the heat exchange tube;

the fin tube is in a shape of a round tube or a square tube, each fin penetrates through the tube wall to form an inner fin and an outer fin, the inner fins and the outer fins are in one-to-one correspondence, the number of the inner fins and the number of the outer fins are the same, and no independent inner fins or independent outer fins exist;

the inner fins extend and intersect together wholly or partially or do not intersect wholly according to requirements; the heights of the inner fins and the outer fins are adjusted according to requirements.

2. The finned full-through heat exchange tube of claim 1, wherein: the heat exchange tube is used for heat exchange between fluid media.

3. The finned full-through heat exchange tube of claim 1, wherein: the fluid medium flows through the inside and the outside of the ribbed tube respectively, and the fluid medium flowing through the inside and the outside of the ribbed tube reversely flows.

Images