Enclosed air system of medium speed mill in heat-engine plant

A technology of sealing air and coal mills, which is applied in combustion methods, block/powder fuel preparation, grain processing, etc., and can solve the problems of energy waste, safety and reliability of the sealing air system

Active Publication Date: 2010-12-08
上海上电电力工程有限公司
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention solves the technical problem of energy waste and safety and reliability of the sealing air system in the existing wind and smoke system, and provides a medium-speed coal pulverizer sealing air system in a thermal power plant. Energy-saving benefits, and can greatly improve the safety and reliability of boiler equipment

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
  • Enclosed air system of medium speed mill in heat-engine plant
  • Enclosed air system of medium speed mill in heat-engine plant
  • Enclosed air system of medium speed mill in heat-engine plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Such as Figure 4 , Shown in 5, the medium-speed coal mill sealing air system of the thermal power plant of the present invention includes a primary fan 20, a sealing air main pipe 14, a cold primary air main pipe 11, and the like.

[0026] The present invention adopts the cold primary air provided by two primary fans 20 to replace the sealing fan to provide a sealing transformation plan, and the sealing air is sealed by adding at least two left and right pipelines 15 and 16 evenly distributed between A-F coal mills. Main pipe 14 is connected with cold primary air main pipe 11 ( Figure 4 ), the cold primary air at the outlet of the primary fan 20 replaces the original sealing fans 12 and 13 to directly provide the sealing air to the coal mill and the coal feeder, at the connection between the left and right connecting pipes 15, 16 and the cold ...

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 an enclosed air system of a medium speed mill in a heat-engine plant, comprising primary fans, an enclosed air header and a cold primary air header, wherein at least two left and right connection pipelines evenly distributed among coal mills (A to F) are additionally added between the enclosed air header and the cold primary air header, and the left and right connection pipelines are also connected with the enclosed air header and the cold primary air header; the cold primary air header at the outlet of the primary fans is directly connected with the enclosed air header, and the cold primary air header replaces an enclosed fan to directly supply enclosed air for the coal mills and coal feeders; and left and right spile doors are respectively arranged at the junctions of the left-right connection pipelines and the cold primary air header, and the left-right spile doors are synchronously opened or closed with the primary fans at the same side. The enclosed air system can save the used amount of the enclosed fans in an electrical machinery plant, realize remarkable energy conservation benefit and greatly improve safe operation reliability of boiler equipment.

Description

technical field [0001] The invention relates to a sealing air system, in particular to a system for supplying sealing air to a coal mill. Background technique [0002] In modern thermal power plants, the boiler is a very important main equipment. It can efficiently burn coal and generate high-temperature and high-pressure steam to drive the turbo-generator unit to deliver high-quality electric energy to the grid. The basic production process of a thermal power plant is as follows: figure 1 Shown: [0003] The fuel is burned in the boiler 1 to generate steam with certain parameters, and the thermal energy of the steam is converted into electric energy through the steam turbine generator set 2 . During this process, the blower 3 delivers enough air to the furnace of the boiler to ensure that the fuel is fully combusted. The waste smoke generated after combustion is sucked by the induced draft fan 4 and discharged through the chimney 6 after desulfurization 5 . In order to e...

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): F23K1/00B02C23/00
Inventor 胡大千欧阳葵邵声新王伟敏
Owner 上海上电电力工程有限公司
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