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Longitudinal fin finned tube and heating furnace with finned tube

A finned tube and heating furnace technology, which is applied in the field of heat exchange equipment, can solve problems such as insufficient heat exchange, affecting heat exchange effect, and failure of heat exchange device to achieve the design effect, so as to improve heat transfer coefficient and maintain heat transfer effect of effect

Active Publication Date: 2016-09-28
THE CHALLENGE PETROCHEM MACHINERY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the vertically finned tube is installed vertically, the fins of the existing vertically finned tube are vertically continuous, and when the fluid flows through the vertically continuous fins, a stable laminar flow will be formed outside the finned tube , the fluid will quickly pass through the finned tubes to cause insufficient heat exchange and affect the heat exchange effect. Therefore, if the fin structure is not innovated to prevent the existing problems, the heat exchange device will often fail to achieve the design effect

Method used

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  • Longitudinal fin finned tube and heating furnace with finned tube
  • Longitudinal fin finned tube and heating furnace with finned tube
  • Longitudinal fin finned tube and heating furnace with finned tube

Examples

Experimental program
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Effect test

Embodiment 1

[0035] One of the specific implementations of a longitudinally finned tube of the present application, see figure 1 As shown, it includes a base pipe 2 and several fins 1, wherein the main heat exchange surface of the fin 1 is vertically arranged, that is, the main heat exchange surface of the fin 1 is perpendicular to the horizontal plane, and several fins 1 are arranged along the base The outer walls of the tubes 2 are vertically spaced and surrounded, wherein the fins 1 are tightly connected to the outer walls of the base tube 2 by welding.

[0036] Specifically, the fins 1 arranged up and down are staggered in the vertical direction, see figure 1 , figure 1 Two rows of fins 1 are drawn in , counting from top to bottom, there is a certain distance between the first row of fins 1 and the second row of fins 1, such as figure 1 The first row of fins 1 and the second row of fins 1 are staggered in the vertical direction, for example, the fins 103 in the second row are aligned...

Embodiment 2

[0038] The second specific embodiment of a longitudinally finned tube of the present application, see figure 2 or image 3 As shown, the main technical solutions of this embodiment are the same as those of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is that: the upper end and / or the lower end of the fin 1 is inclined, and the angle between the upper end 112 and / or the lower end 111 of the fin 1 and the vertical direction is greater than 0 degrees and less than 45 degrees, specifically , see figure 2 , the lower end 111 of the fin 1 faces figure 2 The left side is inclined, and the specific method of inclination can be formed through a mold, or bent by a bending machine, please refer to image 3 , the upper end 112 of the fin 1 faces image 3 The right side is inclined, and the lower end 111 of the fin 1 faces image 3 tilted to the l...

Embodiment 3

[0040] The third specific embodiment of a vertically finned tube of the present application, see Figure 6 As shown in the cross-sectional view of the longitudinal finned tube, the main technical solutions of this embodiment are the same as those of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. The difference between this embodiment and embodiment 1 is: see Figure 6 , the cross section of the fin 601 is triangular, of course, the cross section of the fin 601 can also be rectangular, circular, elliptical, oblate or circular. Generally speaking, this structure is more suitable for the medium outside the finned tube not to enter in the axial direction, that is, the outlet of the furnace body or the heat exchanger shell is vertically arranged with the vertical base pipe 2, and the flowing medium flows from the above The outlet flows out and flows in from the side of the finned tube inlet (radial dire...

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Abstract

The invention relates to the technical field of heat exchange equipment in industries such as petrochemical engineering, electrical energy, steel smelting and air conditioners, in particular to a longitudinal fin finned tube. The longitudinal fin finned tube comprises a vertically-arranged base tube body and fins arranged on the outer wall of the base tube body. Main heat exchange faces of the fins are vertical, and the multiple fins are vertically arranged and staggered in the vertical direction. Compared with the prior art, the innovative fin structure is adopted, meanwhile, the conventional thought in the field is broken through, and the set manner that the fins of the finned tube are originally in a conventional shape is abandoned; and after the technical means are applied, fluid turbulent flow can be generated, the heat exchange coefficient is increased, and accordingly, the heat exchange effect is kept stable and effective for a long term. The invention further provides a heating furnace.

Description

technical field [0001] The application relates to the technical field of heat exchange equipment in petrochemical, electric energy, iron and steel smelting, air conditioning and other industries, in particular to a longitudinal finned tube and a heating furnace with the finned tube. Background technique [0002] Finned tube heat exchangers include various heating furnaces, finned tube preheaters, heat extractors and air coolers, etc., and are one of the most widely used heat exchangers. In thermal equipment, it is the key energy-saving equipment for flue gas and steam heat recovery and utilization. From the structural type, finned tubes can be divided into two basic types: spirally wound finned tubes with oblique fins as the main type, and vertical finned tubes with vertical finned fins as the main type. [0003] The manufacturing process of spirally wound finned tubes is simple and efficient, so its enhanced heat transfer application is earlier and more extensive, and has ...

Claims

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Application Information

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IPC IPC(8): F28F1/14
CPCF28F1/14F28F2215/04F28F2215/08
Inventor 陈孙艺
Owner THE CHALLENGE PETROCHEM MACHINERY CORP