Water-cooled wall of boiler with double collecting boxes at middle part

A water-cooled wall and double header technology, which is applied in the field of boiler water-cooled walls, can solve problems such as uneven temperature distribution, and achieve the effect of solving the large temperature deviation of the working medium and having a good application prospect.

Active Publication Date: 2012-10-17
TSINGHUA UNIV
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a water-cooled wall with double headers in the middle of the boiler to solve the problem of uneven temperature distribution in the riser pipe of the vertical water-cooled wall

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water-cooled wall of boiler with double collecting boxes at middle part
  • Water-cooled wall of boiler with double collecting boxes at middle part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The principle, specific structure and best implementation mode of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] figure 1 It is a schematic diagram of a water wall with double headers in the middle of the boiler. The water wall mainly includes water wall inlet header 2, lower furnace water wall 3, mixing header 6, connecting main pipe 7, distribution header 8, upper furnace water wall 4 and water wall outlet header 5. The water-cooled wall 3 of the lower furnace is led out from the inlet header 2 of the water-cooled wall and connected with the mixing header 6 in the middle of the boiler. Since the heat load in the lower furnace along the width and depth of the furnace 1 is unevenly distributed, the water-cooled wall of the lower furnace 3. The working fluid at the outlet already has a temperature deviation. The working fluid with different temperatures from the lower furnace water wall 3 is mixed in the mix...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a water-cooled wall of a boiler with double collecting boxes at the middle part, relating to a water-cooled wall of the boiler. The water-cooled wall is vertically arranged, and the double collecting boxes are arranged at the middle part of the boiler and consist of a distribution collecting box and a mixing collecting box. A working medium enters the mixing collecting box of the lower part of the boiler after flowing out of a water-cooled wall pipe of a lower hearth and then enters the distribution collecting box of the upper part of the boiler through a connection main pipe, the distribution collecting tank is used for distributing the working medium to a water-cooled wall of an upper hearth, and the mixing collecting box and the distribution collecting box are connected through the connection main pipe in a crossing manner. According to the water-cooled wall of the boiler, disclosed by the invention, the working medium absorbing much heat from the lower hearth is distributed to the wall-cooled wall pipe with lower thermal load in the upper hearth, thus the temperature deviation of the working mediums at outlets of water-cooled walls in width and depth directions of a hearth is effectively reduced, and the safety of boiler hydrodynamics is ensured.

Description

technical field [0001] The invention relates to a boiler water wall, which belongs to the technical field of combustion equipment. Background technique [0002] In pulverized coal boilers, no matter whether four-corner tangential combustion, double tangential combustion, front and rear walls are opposed to combustion or "W" flame combustion, there is always an uneven heat load inside the furnace. For subcritical boilers, even if the heat load is unevenly distributed, the working medium in the water wall is saturated, so there is no temperature deviation at the outlet of the water wall. However, for supercritical pulverized coal boilers, the temperature of the working fluid in the water-cooled wall gradually increases along the furnace height, and at the same time, the larger furnace width and depth of the large-capacity supercritical boiler also lead to more serious heat load inhomogeneity, so the outlet of the water-cooled wall Larger temperature deviations are prone to oc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F23M5/08
Inventor 李舟航吴玉新吕俊复张海
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap