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Hearth heating surface of supercritical boiler

A supercritical boiler and heating surface technology, applied in boiler water pipes, lighting and heating equipment, combustion methods, etc., can solve problems such as heat transfer deterioration, economic losses, and threats to the safe and stable operation of boilers

Inactive Publication Date: 2012-07-04
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method of increasing the heating surface is to extend a single row of heating surfaces on the heating surface into the furnace. Since both sides of the single row of heating surfaces are heated, it is easy to cause heat transfer deterioration, which seriously threatens the safe and stable operation of the boiler and is likely to cause huge economic losses. loss

Method used

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  • Hearth heating surface of supercritical boiler
  • Hearth heating surface of supercritical boiler
  • Hearth heating surface of supercritical boiler

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Embodiment Construction

[0015] The structure and principle of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] like figure 1 As shown, the heating surface of the furnace includes a water-cooled wall 2 arranged on the side wall of the furnace 1, and at least one boss structure 3 formed by extending the water-cooled wall 2 on the side wall into the furnace. 4 filling.

[0017] The present invention adds a boss structure 3 to the furnace 1 on the basis of the water-cooled wall 2. The three surfaces of the boss structure 3 facing the furnace are made of water-cooled walls, and the boss structure is consistent along the furnace height direction (such as figure 2 shown).

[0018] In the design, the influence of the boss structure 3 on the cross-sectional area of ​​the furnace 1 needs to be considered, and the width and depth of the furnace should be adjusted accordingly. The influence of the boss structure 3 on the combustion characteristics a...

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Abstract

The invention discloses a hearth heating surface of a supercritical boiler, and belongs to the technical field of thermal equipment. The hearth heating surface comprises a water cooling wall which is arranged on a side wall of a hearth, and at least one boss structure which is formed by extending from the water cooling wall on the side wall to the inside of the hearth, wherein the boss structure is internally filled with heat insulating materials. According to the invention, by adding the boss structure, not only area of the heating surface is increased and height of the hearth is lowered, but also single-side heating of the heating surface is guaranteed. In this way, defect in heat transfer deterioration due to double-side heating of the prior art is avoided; the hearth heating surface of the supercritical boiler is suitable for arrangement structure of the heating surface of the supercritical boiler.

Description

technical field [0001] The invention relates to an arrangement structure of a supercritical boiler furnace heating surface, belonging to the technical field of thermal equipment. Background technique [0002] At present, coal-fired power plant boilers mainly include pulverized coal boilers and circulating fluidized bed boilers. Both boilers transfer the internal energy generated by combustion to the working medium by arranging water-cooled wall heating surfaces on the side walls of the furnace. [0003] By improving the steam parameters, the power generation efficiency of the power station can be improved, so the development of supercritical boilers is the current mainstream development direction. To increase the steam parameters, it is necessary to increase the heating surface area of ​​the boiler. The existing method of increasing the heating surface is to extend a single row of heating surfaces on the heating surface into the furnace. Since both sides of the single row o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B37/10F23M5/08
Inventor 吕俊复胡南杨海瑞吴玉新岳光溪
Owner TSINGHUA UNIV
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