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Fire grate of boiler

A technology for boilers and grates, which is applied to grates, lighting and heating equipment, etc. It can solve the problems of short service life, waste of raw materials, easy melting and damage, etc., and achieve good ventilation effect, good effect and protection of the furnace body

Inactive Publication Date: 2012-05-30
宽甸满族自治县新兴锅炉机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Fire grates, that is, fire grates, are needed in boiler equipment. The existing fire grates are composed of strips or ribs fixed on the overall frame. If a single strip or rib is damaged, the entire fire grate needs to be replaced, which wastes raw materials. ; and the existing grate material is mostly cast iron, which is not resistant to high temperature, and is easy to be melted and damaged when the temperature is too high, and the service life is short

Method used

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  • Fire grate of boiler
  • Fire grate of boiler
  • Fire grate of boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: as Figure 1-Figure 2 As shown, the present invention is placed at the bottom of the boiler and consists of a plurality of independent rows arranged side by side, and a plurality of ventilation holes 1 are opened on the single row. When the present invention is in use, a plurality of rows of sheets are arranged side by side, and are installed on the furnace beam through the fixing claws 3 .

[0022] In this example, the material composition of sheet 1 is calculated by weight percentage: 8% aluminum, 9.5% silicon, 2% chromium, 15% carbon steel, and the rest is pig iron.

[0023] The processing technology of sheet arrangement 1 in this example comprises the following steps:

[0024] (1) Smelting a mixture of carbon steel and pig iron;

[0025] (2) Add silicon and chromium when the smelting temperature is 900°C;

[0026] (3) When the smelting temperature is 1100°C, add aluminum and smelt for 10 minutes;

[0027] (4) Casting molding.

Embodiment 2

[0028] Embodiment 2: The overall structure of this embodiment is the same as that of Embodiment 1, the difference is that: the end of the single row facing the inner side of the boiler has a slope 2, and a plurality of ventilation holes 1 are opened on it. A reinforcing rib 4 is provided on the side facing the outside of the boiler of the single row.

[0029] When the present invention is in use, a plurality of slabs are arranged side by side, installed on the furnace beam through the fixed claw 3, and the slope 1 of the plurality of slabs forms a large slope, which is beneficial to slagging and combustion in the furnace.

[0030] The material composition of sheet 1 in this example is calculated by weight percentage: aluminum 11%, silicon 10.5%, chromium 6%, carbon steel 35%, and the rest is pig iron.

[0031] The processing technology of sheet arrangement 1 in this example comprises the following steps:

[0032] (1) Smelting a mixture of carbon steel and pig iron;

[0033] ...

Embodiment 3

[0036] Embodiment 3: The overall structure of this example is the same as that of Example 1, but the difference is that the material components of sheet 1 in this example are by weight percentage: 10% aluminum, 10% silicon, 5% chromium, 25% carbon steel, and the rest are pig iron.

[0037] The processing technology of sheet arrangement 1 in this example comprises the following steps:

[0038] (1) Smelting a mixture of carbon steel and pig iron;

[0039] (2) Add silicon and chromium when the smelting temperature is 950°C;

[0040] (3) When the smelting temperature is 1200°C, add aluminum and smelt for 12 minutes;

[0041] (4) Casting molding.

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Abstract

The invention relates to a first grate of a boiler, wherein the first grate is arranged at the bottom of the boiler and is used for slagging. The fire grate is formed by arranging a plurality of independent grate sheets in parallel, and each grate sheet is provided with a plurality of air vents. Each grate sheet comprises the following components in percentage by weight: 8-11 percent of aluminum, 9.5-10.5 percent of silicon, 2-6 percent of chromium, 15-35 percent of carbon steel and the balance of pig iron. Because the first grate is formed by arranging the plurality of independent grate sheets on a burner beam of the boiler in parallel, the single grate sheet is damaged, the damaged sheet needs to be replaced only, so that convenience is brought for maintenance and use. By changing a structure and materials of the fire grate, the ventilation effect in the boiler is good so as to be beneficial to sufficient combustion in the boiler, and the effect of complete combustion can be achieved. The fire grate disclosed by the invention has the advantages of energy saving, boiler body protection property, high temperature resistance, no smelting after the temperature reaches 1200 DEG C, good smoke and dust removal effect and capability of achieving the effects of residual breaking for crushing; and the fire grate has not special requirements on coals and can ensures good combustion even fault coals are fed.

Description

technical field [0001] The invention relates to a boiler fire grate, which is placed at the bottom of the boiler and used for slag discharge. Background technique [0002] Fire grates, that is, fire grates, are needed in boiler equipment. The existing fire grates are composed of strips or ribs fixed on the overall frame. If a single strip or rib is damaged, the entire fire grate needs to be replaced, which wastes raw materials. and most of the existing fire grate materials are cast iron, which are not resistant to high temperatures, and are easily melted and damaged when the temperature is too high, and the service life is short. Contents of the invention [0003] Aiming at the above-mentioned technical problems, the present invention provides a filter plate whose strength and hardness are increased by changing its structure and material. [0004] To achieve the above object, the technical solution adopted in the present invention is: [0005] The boiler fire grate of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23H13/00C22C38/34C22C33/04
Inventor 臧恩玉郭会
Owner 宽甸满族自治县新兴锅炉机械厂
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