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Finned plate, finned plate manufacturing method and air preheater using the finned plate

A manufacturing method and technology for finned plates, which are used in combustion methods, lighting and heating equipment, heat sinks, etc., can solve the problem that the heat exchange efficiency of the finned plates cannot meet the theoretical requirements, and the heat transfer of the finned plate substrates is insufficient to meet the requirements. and other problems, to achieve the effect of fast and effective heat transfer and improve heat exchange efficiency

Active Publication Date: 2017-07-25
THE CHALLENGE PETROCHEM MACHINERY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional air preheater originally did not have the design technology of plate-fin finned plates. With the design experience of similar equipment, although the academic circles have also conducted research on the design of finned plates, they mainly focused on the size and shape of the fins. However, the inventors found that the base plate of the fin plate plays a very important role in the heat transfer process, but this factor is often ignored in the size design of the current fins, which leads to insufficient heat transfer of the base plate of the fin plate To meet the requirements, the overall heat exchange efficiency of the fin plate cannot meet the theoretical requirements

Method used

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  • Finned plate, finned plate manufacturing method and air preheater using the finned plate
  • Finned plate, finned plate manufacturing method and air preheater using the finned plate
  • Finned plate, finned plate manufacturing method and air preheater using the finned plate

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Embodiment 1

[0035] This embodiment provides a finned plate, which includes a base plate 1, and the base plate 1 includes a heat absorbing surface for absorbing heat from flue gas (ie, the first transfer medium) and dissipating heat to the air (ie, the first transfer medium) The heat dissipation surface of the second transfer medium), the heat absorption surface is provided with heat absorption fins 2, and the heat dissipation surface is provided with heat dissipation fins 3. During the heat transfer process, heat is removed from the flue gas by the heat absorption fins 2 The absorption is then transferred to the substrate 1 through the heat-absorbing surface, and then transferred to the heat-dissipating fins 3 through the heat-dissipating surface of the substrate 1. In the heat transfer process, the flow area and flow volume are two important factors affecting the heat transfer effect, and each independent heat-absorbing fin 2 and heat-dissipating fin 3 has a certain independence in the he...

Embodiment 2

[0040] This embodiment provides another finned plate. The main technical features of this finned plate are the same as those in Embodiment 1. 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 surface area of ​​the single heat absorbing fin 2 is smaller than the average heat absorbing area of ​​the substrate 1 , and the surface area of ​​the single heat dissipation fin 3 is smaller than the average heat dissipation area of ​​the substrate 1 . This facilitates product size design and further improves the heat exchange efficiency of the finned plate. In the following, for the convenience of discussion, the structure of the finned plate is simplified as image 3 In this model, the heat-absorbing fin 2 and heat-dissipating fin 3 have the same structure. For the convenience of analysis, the heat-absorbing fin 2 is used for analysis, and the heat-absorbing fin...

Embodiment 3

[0052] An air preheater is provided, and the air preheater includes a heat exchange module, and the heat exchange module adopts the fin plate of Embodiment 1 or Embodiment 2 as a heat exchange device.

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Abstract

The invention provides a fin plate and a manufacturing method of the fin plate. The fin plate and the manufacturing method are mainly characterized in that the superficial area of a single heat absorption fin is smaller than or equal to the average heat absorption area of a base plate, and the superficial area of a single heat dissipation fin is smaller than or equal to the average heat dissipation area of the base plate; the value the average heat absorption area is equal to the value obtained by dividing the heat absorption face area of the base plate by the number of the heat absorption fins, and the value of the average heat dissipation area is equal to the value obtained by dividing the heat dissipation face area of the base plate by the number of the heat dissipation fins, so that heat transfer between the fins of the fin plate and the base plate is not blocked, heat transfer can be rapidly and effectively achieved between the fin plate and the base plate, and accordingly the heat exchange efficiency of the whole fin plate is improved. The fin plate is adopted in the air preheater, similarly, the air preheater can rapidly and efficiently conduct heat transfer, and the advantage of being high in heat exchange efficiency is achieved.

Description

technical field [0001] The invention belongs to the technical field of heat exchange equipment in mechanical equipment engineering, and in particular relates to a fin plate, a manufacturing method of the fin plate and an air preheater using the fin plate. Background technique [0002] In the prior art, the usual plate-fin air preheater structure includes heat exchange modules stacked together up and down. The flue gas flow channel comes out from the flue gas outlet at the bottom after heat exchange and heat release by the finned plates of the heat exchange module. The air enters the air channel of the heat exchange module from the air inlet, and enters the heating furnace from the air outlet after being heated. In this process, the finned plate is mainly used for heat exchange between the flue gas and the air. It can be seen that the finned plate is the main device that affects the efficiency of the preheater. Theory and practice show that in terms of improving the overall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F3/02F23L15/00
CPCF23L15/00F28F3/022F28F2215/04Y02E20/34
Inventor 陈孙艺
Owner THE CHALLENGE PETROCHEM MACHINERY CORP