How to repair the boiler

As for the "how to make a boiler" mentioned above, I think it is the problem of the transformation and maintenance of the boiler wall, so the boiler wall is made.

Talk about the following aspects:

The inner and outer walls of the boiler play the role of heat insulation, sealing and guiding the flow of flue gas, and should have sufficient heat resistance, high degree of heat insulation and good sealing. If the seal is not good, it will affect the normal operation of the boiler, and the high-temperature flue gas will escape from the furnace wall, which will reduce the reliability of the boiler earthwork, pollute the environment and cause unsafe accidents to the operators. Therefore, the quality requirements for building boiler walls are very high.

1, refractory bricks and thermal insulation materials required for furnace walls shall meet relevant technical standards. If the raw materials are slightly modified, it must be

Get the same interest from the technical department.

2. Bricks for furnace walls shall be selected according to the second-class refractory bricks and the first-class 75 or 100 standard red bricks. Bricks should be straight,

There shall be no cracks, edges and corners, and the edges shall be complete, which shall meet the standards of (}B 44 15- 1984 and GB 3994- 1983.

3. When the firebrick needs grounding, tools and machinery should be used for grounding. ICI of grounding surface should be smooth, and refractory bricks should be

ICI's cut-in bricks, notched bricks, independent bricks and floor tiles shall not be placed by fire.

4. Damaged refractory bricks with the length of 1/3 and less than 1/3 bricks shall not be used, and their length is 10 times of the total length of13 bricks in any layer.

The number of broken bricks shall not exceed 3.

5, masonry mortar should choose the same material as masonry, should comply with the provisions of the relevant materials.

6. The refractory brick wall of steam boiler is generally Grade I 1 1 masonry, and the mortar joint of refractory brick layer is 1.5} 3mmo red brick layer.

Mortar joint is 5} 7mm. The joint thickness of brick masonry in each part of the boiler shall not exceed the size in Table 1- 19. ICI and pipes on the surface of furnace wall

The allowable error of the gap between sub-poles should not exceed the value in table 1-20.

7. Between the inner refractory brick and the outer red brick, why do you use refractory bricks or special refractory bricks as the inside and outside every five or seven layers?

The implicated bricks of each floor, or several implicated bricks of each floor, are staggered on the vertical line.

8. Expansion joints shall be set aside as required. There should be no sundries, dirt and other sundries in the expansion joint left at the inner corner of the furnace wall. The expansion joint should be filled with asbestos rope, and the asbestos rope near the furnace wall should be wiped with refractory cement to prevent the smoke from infiltrating.

9, boiler steel frame, column and beam near the expansion joint, the application of asbestos rope (plate) or other thermal insulation materials closely separated from the furnace wall.

10, the movable fulcrum equipment of furnace tube and water wall header should not be placed on the furnace wall, and a gap must be left according to the drawing ruler.

1 1. Pipes and headers passing through or in the furnace wall are not allowed to be too close to the brick wall, and gaps must be left according to the drawings.

The wall-penetrating pipe shall be wrapped with X 15-}20mm asbestos rope, and then the gap shall be filled with refractory mud, which is not allowed.

Smoke leakage and gas leakage.

12, the outer red brick of the furnace wall, generally using industrial clay mortar, less water putty slurry, brick joints are generally Smm, individual.

8mm} allowed, but not more than 10 pieces. If cement mortar is used and the brick seam is 7mm, individual lOmm} is allowed, but what M'

No more than 8 articles.

13, the surface of the red brick outside the furnace wall should be smooth, without cracks, bricks and bending.

14, brick thickness: the side wall is usually 1 1/2 2 brick thickness, the inner layer is made of 1- 1/2 brick thickness, and the outer side is insulated.

Layer, the end wall thickness is 2 1/2 4 brick, and the inner layer is also refractory brick. The internal heat-resistant brick should be selected according to the heating temperature of the boiler furnace.

The outer side of the side wall is wrapped with thick steel plate to improve the strength and sealing of the boiler.