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Triple-stroke air-preheating radiant tube burner heat exchanger

An air preheating radiation, three-stroke technology, applied to gas fuel burners, burners, combustion methods, etc., can solve problems such as poor heat transfer efficiency, reduce heat loss, reduce heat transfer surface temperature, and improve air preheating. The effect of hot temperature

Inactive Publication Date: 2012-12-12
WISDRI WUHAN WIS IND FURNACE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, at a flue gas temperature of 1000°C, this kind of heat exchanger can preheat the air to 400°C, and the heat exchange efficiency is poor; The heat exchange is carried out by adopting the structure of spray flow and finned tube, that is, the outer tube of the heat exchanger is equipped with finned tubes, and the inner tube adopts a multi-stroke jet flow structure to improve the heat exchange effect

Method used

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  • Triple-stroke air-preheating radiant tube burner heat exchanger
  • Triple-stroke air-preheating radiant tube burner heat exchanger
  • Triple-stroke air-preheating radiant tube burner heat exchanger

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Embodiment Construction

[0032] Below in conjunction with specific embodiment, the present invention is further described:

[0033] see figure 1 and figure 2 , Three-stroke air pre-tropical flue gas diversion and entrainment structure radiant tube burner heat exchanger, the heat exchanger is divided into two parts: built-in heat exchange and external heat exchange. The part of the built-in heat exchange area includes the end plug 1, which adopts a diversion-shaped structure design, is precision cast and formed, and is fixed with the inner finned tube 2 through continuous sealing welding. The inner finned tube 2 is formed by precision casting of heat-resistant steel, and the outer fin structure is designed. The fins are evenly arranged along the tube wall of the heat exchange tube, and the arrangement varies from 36 to 54 per circle according to the diameter of the heat exchange tube. The internal finned tubes 2 are fixed by continuous sealing welding. The porous jet tube 4 is formed by numerical c...

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Abstract

The invention provides a triple-stroke air-preheating radiant tube burner heat exchanger for raising the air-preheating temperature, lowering the exhaust gas temperature, improving the temperature efficiency and thermal efficiency of a heat exchanger. The triple-stroke air-preheating radiant tube burner heat exchanger comprises an end part choke plug, an inner fin tube, a multi-hole jet flow tube, a baffle ring, a middle duct, an air jet tube, a middle heat exchange duct, an exhaust gas stream guidance apparatus, a special-shaped flange, an external air duct, an expansion joint, a central fin heat exchange tube, an external heat exchange tube, an exhaust gas outlet tube and an air inlet tube, wherein the heat exchanger is divided into a build-in heat exchange region and an external heat exchange region by the special-shaped flange and the expansion joint. According to the triple-stroke air-preheating radiant tube burner heat exchanger, the air preheating temperature is improved, the exhaust gas temperature is lowered, and the temperature efficiency and thermal efficiency of the heat exchanger are improved.

Description

technical field [0001] The invention relates to the technical field of heat exchange devices, in particular to a double-stroke air preheating radiant tube burner heat exchanger used in conjunction with a radiant tube burner. Background technique [0002] In recent years, with the wide-scale promotion and application of radiant tube heating technology in the field of metal heat treatment, the research and development of various radiant tube heating devices, waste heat recovery devices, radiant tube materials and types has also been effectively promoted. Due to the continuous improvement of product quality, pollutant discharge, waste heat recovery and control accuracy, the heating method of radiant tube burners has gradually transitioned from manual ignition to automatic ignition, and the original finned heat exchanger is far from being able to meet the requirements. With the existing waste heat recovery requirements, the focus of research has gradually shifted to the developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/66F23L15/00
CPCY02E20/34
Inventor 高阳徐少春刘小民沈小军
Owner WISDRI WUHAN WIS IND FURNACE
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