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High-efficiency superheater

A superheater, high-efficiency technology, used in steam superheating, lighting and heating equipment, steam generation, etc., can solve the problems of high cleaning difficulty, poor strength, large flow resistance of superheater, etc., to achieve good integrity, good strength, The effect of improving heat exchange efficiency

Active Publication Date: 2015-06-03
临沂恩科开发建设有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the technical problems of relatively large flow resistance, high cleaning difficulty and poor strength of the superheater in the prior art, and provide a new type of cylindrical superheater

Method used

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Embodiment Construction

[0038] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0039] Such as Figure 1~2 As shown, the present invention is a high-efficiency superheater. The superheater is installed in the superheated flue, including a primary heating flow channel and a secondary heating flow channel sleeved outside the primary heating flow channel;

[0040] The first-stage heating flow channel includes a flue gas channel A1, and a heat exchange fin A2 is arranged in the flue gas channel A1. The heat exchange fin A2 is helical, and the helical axis of the heat exchange fin A2 is in line with the The axes of the flue gas passage A1 are coaxial, and an annular heating chamber A3 is arranged on the outer wall of the flue gas passage A1, ...

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Abstract

The invention relates to a high-efficiency superheater which is arranged in a superheating flue and comprises a first-stage heating flue and a second-stage heating flue sleeving outside the first-stage heating flue, wherein the first-stage heating flue comprises a flue gas channel A; heat exchange fins A are arranged in the flue gas channel A; an annular heating chamber A is formed in the outer wall of the flue gas channel A; the second-stage heating channel comprises an annular heating chamber B; an annular flue gas channel B is arranged between the inner wall of the annular heating chamber B and the outer wall of the annular heating chamber A; the annular heating chamber B and the annular heating chamber A are communicated through a plurality of connecting pipes; a conical groove is formed in one side, toward the superheating flue, of the superheater; the axis of the conical groove is coaxial with the flue gas channel A; the bottom surface edge of the conical groove is positioned in the outer wall surface of the annular heating chamber B. A dividing wall type heat exchanger with an annular structure replaces an original dividing wall type heat exchanger with an array pipeline structure, so the flowing resistance of high-temperature flue gas flowing in the superheater is reduced.

Description

technical field [0001] The invention relates to a high-efficiency superheater, belonging to the field of boiler structural accessories. Background technique [0002] In a fluidized boiler, a superheater is a heat exchange device that heats saturated steam under a certain pressure into superheated steam under a corresponding pressure in the boiler. [0003] The superheater can be divided into convection type, radiation type and semi-radiation type according to the heat transfer mode; according to the structural characteristics, it can be divided into snake-shaped tube type, screen type, wall type and wall-wrapped type. They all consist of several parallel pipes and inlet and outlet headers. The outer diameter of the pipe is generally 30-60 mm. The convection superheater is the most commonly used and adopts the serpentine tube type. It has a relatively dense tube group, arranged in the flue with a flue gas temperature of 450-1000 ℃, and is scoured by the flue gas horizontal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22G3/00
Inventor 胡晓荣俞娟胡瑜
Owner 临沂恩科开发建设有限公司
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