Mechanical reciprocating type multistage fire grate overhauling construction method

A construction method and reciprocating technology, applied in the combustion method, mobile grate, grate and other directions, can solve the problems of low work efficiency, high cost and long maintenance time on site, and achieve strong construction specialization and construction efficiency. High, improve the effect of construction quality

Active Publication Date: 2020-12-25
JIANGXI THERMAL POWER CONSTR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a mechanical reciprocating multi-stage fire grate maintenance construction method, which overcomes the shortcomings of the original maintenance construction method, such as long maintenance time, high cost, and low on-site construction efficiency

Method used

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  • Mechanical reciprocating type multistage fire grate overhauling construction method
  • Mechanical reciprocating type multistage fire grate overhauling construction method
  • Mechanical reciprocating type multistage fire grate overhauling construction method

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Embodiment approach

[0017] A mechanical reciprocating multi-stage fire grate maintenance construction method is characterized in that it includes the following construction steps:

[0018] Ⅰ. Construction preparation

[0019] Lay a 5mm thick anti-falling steel plate in the ash hopper of the air chamber under the grate, and set up a protective fence above the slag opening at the front end of the grate in the burner section to clean up the debris on the pusher and grate in the furnace;

[0020] Ⅱ. Overhaul of grate in drying section

[0021] Use electric picks and crowbars to remove the refractory bricks above the end partition. When removing the refractory bricks, communicate with the insulation pouring professional about the scope of removal. Try to remove only one or two layers of refractory bricks above the end partition to reduce the workload of refractory brick restoration. ;Take out the fixing hardware 7 of the end stops on both sides, and use a crowbar to take out the end spacer 3 and the ...

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PUM

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Abstract

The invention discloses a mechanical reciprocating type multistage fire grate overhauling construction method. The mechanical reciprocating type multistage fire grate overhauling construction method is characterized in that the mechanical reciprocating type multistage fire grate overhauling construction method comprises the steps of construction preparation, overhauling of a drying section fire grate, overhauling of a burnout section fire grate, overhauling of a combustion section fire grate and cold-state no-load trial operation construction of a fire grate. By adopting the construction sequence that fire grate segments and scrapers of the drying section and the burnout section are dismantled and replaced firstly and the fire grate segments and the scrapers of the combustion section are dismantled and replaced later, the disassembled and to-be-replaced fire grate segments and the scrapers are convenient to store, and enough operation space is provided for maintainers; and a bolt is loosened by adopting a L-shaped socket spanner and a stress application rod, and then a ratchet spanner is used for dismantling the bolt, so that the problem that due to the fact that the operation environment is severe, corrosion is serious, and the fire grate segment fixing bolt is completely wrapped by a molten material, the fixing bolt is difficult to dismantle and other problems are solved, thetool and instrument loss rate is reduced, and the work efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of inspection and maintenance of incinerators in waste power plants, and in particular relates to a mechanical reciprocating multi-stage grate maintenance construction method. Background technique [0002] The combustion device of the incinerator mostly adopts the grate type, and the mechanical grate adopts the movable grate to make the incineration continuous and automatic. The grate furnace consists of three areas: drying grate, combustion grate, and embering grate. Domestic solid waste is provided by the feeding device, and the solid waste is burned through the drying section, combustion section, and embering section by moving the grate. The HPCC type mechanical reciprocating multi-stage grate is a high-speed (pressurized) combustion type grate that adopts Ebara horizontal push grate technology in Japan. The upward propulsion can ensure the turning, stirring and breaking up of the garbage, making the com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/44F23H11/18
CPCF23G5/44F23H11/18Y02E20/12
Inventor 靳超薛振华蒋晓平黄志勇陈之贵宁伟旺
Owner JIANGXI THERMAL POWER CONSTR CORP
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