Double-layer water-cooled fire grate based on vertical coal-fired boiler

A coal-fired boiler, double-layer water cooling technology, applied in the directions of double-layer grate, grate, combustion method, etc., can solve the problems of low grate hardness and strength, waste of energy, etc., to improve hardness and strength, reduce cost, simple structure

Inactive Publication Date: 2018-02-09
宝鸡圭彬光电设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a double-layer water-cooled fire grate based on a vertical coal-fired boiler, which solves the problems of energy waste and low hardness and strength of the existing boiler fire grate during use

Method used

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  • Double-layer water-cooled fire grate based on vertical coal-fired boiler
  • Double-layer water-cooled fire grate based on vertical coal-fired boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The selected sheet a3 is composed of the following components according to the mass fraction: 6% aluminum, 8.5% silicon, 4% chromium, 20% carbon steel, and the balance is pig iron. The sum of the mass percentages of the above components is 100%.

[0029] The double-layer water-cooled fire grate includes a tubular support frame 1, and a group of parallel fire grate pieces 2 are respectively fixed at both ends of the support frame 1. The angle between each fire grate piece 2 and the central axis of the support frame 1 is 30°. The radial direction of the fire grate 2 is sequentially provided with a row a3 and a row b5, a number of water pipes 4 are arranged between the row a3 and the row b5, and along the radial direction of each fire grate 2, a row a3 and a row b5 are sequentially arranged, and the row a3 A water pipe 4 is arranged between the row sheet b5, and the angle between every two adjacent water pipes 4 is 20°. The top of each row sheet b5 is evenly covered with a ...

Embodiment 2

[0031] The selected sheet a3 is composed of the following components according to the mass fraction: 10% aluminum, 12.5% ​​silicon, 8% chromium, 22% carbon steel, and the balance is pig iron. The sum of the mass percentages of the above components is 100%.

[0032] The double-layer water-cooled fire grate includes a tubular support frame 1, and a group of parallel fire grate pieces 2 are respectively fixed at both ends of the support frame 1. The angle between each fire grate piece 2 and the central axis of the support frame 1 is 40°. The radial direction of the fire grate 2 is sequentially provided with a row a3 and a row b5, a number of water pipes 4 are arranged between the row a3 and the row b5, and along the radial direction of each fire grate 2, a row a3 and a row b5 are sequentially arranged, and the row a3 A water pipe 4 is arranged between the row sheet b5, and the angle between every two adjacent water pipes 4 is 35°. The top of each row sheet b5 is evenly covered wit...

Embodiment 3

[0034] The selected sheet a3 is composed of the following components according to the mass fraction: 8% aluminum, 10% silicon, 6% chromium, 21% carbon steel, and the balance is pig iron. The sum of the mass percentages of the above components is 100%.

[0035] The double-layer water-cooled fire grate includes a tubular support frame 1, and a group of parallel fire grate pieces 2 are respectively fixed at both ends of the support frame 1. The angle between each fire grate piece 2 and the central axis of the support frame 1 is 35°. The radial direction of the fire grate 2 is sequentially provided with a row a3 and a row b5, a number of water pipes 4 are arranged between the row a3 and the row b5, and along the radial direction of each fire grate 2, a row a3 and a row b5 are sequentially arranged, and the row a3 A water pipe 4 is arranged between the row sheet b5, and the angle between every two adjacent water pipes 4 is 30°. The top of each row sheet b5 is evenly covered with a s...

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Abstract

The invention discloses a double-layer water-cooled fire grate based on a vertical coal-fired boiler. The double-layer water-cooled fire grate comprises a tubular supporting frame; two sets of fire grate sheets parallel to each other are fixedly connected to the two ends of the supporting frame correspondingly, a fire grate sheet body a and a fire grate sheet body b are sequentially arranged in the radial direction of each fire grate sheet, and a plurality of water pipes are arranged between each fire grate sheet body a and the corresponding fire grate sheet body b; and each fire grate sheet body a is composed of, by mass, 6-10% of aluminum, 8.5-12.5% of silicon, 4-8% of chromium, 20-22% of carbon steel, and the balance pig iron, and the sum of the mass percent of all the components is 100%. According to the double-layer water-cooled fire grate, by using the two layers of fire grate sheets, the water pipes can sufficiently absorb the heat of slag in the slag falling process; and the center of each layer of fire grate sheet is provided with the corresponding fire grate sheet body a which is provided with a through hole, the problem that the fire grate is damaged because of being heated is solved, the cost is reduced, the hardness and strength of the fire grate are improved, the structure is simple, and well practical value is achieved.

Description

technical field [0001] The invention belongs to the technical field of boiler fire grates, and in particular relates to a double-layer water-cooled fire grate based on a vertical coal-fired boiler. Background technique [0002] A coal-fired boiler is a boiler whose fuel is coal. It refers to thermal energy power equipment that heats heat medium water or other organic heat carriers (such as heat transfer oil, etc.) to a certain temperature (pressure) after burning coal in the furnace to release heat. The existing vertical coal-fired boiler is a hot water boiler. The furnace adopts a water-cooled elbow structure surrounded by a furnace, with a large heating area, high thermal efficiency, energy saving and consumption reduction; the shell adopts an elliptical head, and the grate adopts a cast iron circular furnace row, durable and long service life. [0003] Most of the vertical coal-fired boiler products in my country use a cast iron furnace bridge at the bottom of the coal c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23H5/00F23H15/00
CPCF23H5/00F23H15/00F23H2900/03021
Inventor 邓游
Owner 宝鸡圭彬光电设备有限公司
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