Cricket crack repair and reinforced maintenance
Boiler chimney maintenance, chimney maintenance, chimney maintenance, concrete chimney maintenance
Project profile:
1 the original chimney is 48m high and has a calibre of 1. 4m。
Due to production needs, the original chimney calibre has not reached demand and must be improved。
3. In order to reach the demand of the original chimney, the calibre is 2. 3 m。
Dismantling of the original chimney to 30 m and re-engineering of the magnifier。
5. The original chimney scale of 1:1. 25 has now been changed to 1:1 to reach the 48m calibre of 2. 3 m。
6. To enable the chimney to reach design strength, after height, the outer wall is dusted and reinforced, including the stretching。
7. Uplifted and reinforced by up- and down packs of 48 m and 8 feet per metre。
Ii. Construction programme:
1. The entry of the construction staff will begin with an individual examination of the climbing stairs。
2. As the chimney could not be stopped during the construction period, work was ongoing。
3. The construction was carried out in the form of uninterrupted production without scaffolding。
4- first, a two-way assembly-type stubble is made based on the outer diameter of the original chimney。
5. Welding of a fixed horn ring at 90 centimeter intervals。
6. The production of a triangle is 80 cm long, one end of which is dragged inside the horns and is sustained around。
7 with 40 x 400 x 2000 scales, the triangle support is flatted and fixed with ropes。
8. The construction operator works under seat belts, which are secured on the stairs and removed from the scaffold。
9. Dismantling tools are used with electric shovels, hammers, chiseling, etc., and the two are working together in such a way as to remove the brick chimney。
10. Dismantling waste and landing directly from the air。
11 after being removed from 48 m altitude to 18 m altitude, the top is cleared and water is washed up to high level。
12, and before that, the first thing to do was to build a ring inside。
13, 8 and 12 anti-shock spasms placed on the ring。
14. The red bricks used to start building the bricks must be made and processed into alien bricks in order to ensure the proportion of the gap between the bricks。
15, 6. 5 anti-shock bands per metre round at height and 7 degree design requirements。
16. The slurry was constructed on 10m。
The red bricks used must be filled with sufficient water in advance so as to ensure that the bonding of the ash is strong。
Metal components such as detonators, cords and ladders are installed as such。
Upon completion of construction, the outer wall of the chimney is dusted with 15m concrete sand, 3 cm thick, smooth and flat。
20. Cement slurry is wiped out, 48 tracks reinforced and 8 bars reinforced, and metal components shall be decomposed。
21 such a complete 2. 3-metre-calibre chimney has been completed to meet plant design requirements for 180,000 m3/h emissions of flue gas。
22 the original chimney design is based on the national map collection, 00g211 (iii), 50-1. 4-0. 5-400 91 pages, with a band chart of 105 pages。
23. Work is carried out on 88 pages based on the 44-page smoker chart of the national atlas, " 04g211-50-2. 0-0. 55-250 " 。
24 the original chimney is designed for 400 degrees exhaust temperature and is now designed for 250 degrees exhaust temperature on page 44 of the figure, with the addition of a high area that is corrosive to the inner wall of acid-resistant sludge, which is both corrosive and temperature resistant。
25, 18m below the chimney will be on leave on 1 october to recommencing the interior wall with acid-resisting sludge, which will be synchronized with the upper part to achieve preservation。
26. The chimneys are painted with colour rings or plant labels and, in consultation with the manufacturer, the design is then determined。
Total amount of work:
1 dismantling chimney height 30 m。
2 rebuilding plus 30 m
3. Installation of two detonators。
Four hundred anti-shock bands are used inside the walls。
5. Two tracks (starting construction of parts and tops) of the cement ring。
6. The wall is reinforced with eight anti-shock bars。
7 - 50 m for the installation of a new mine escape line。
8 - installation of a ladder 30m。
9. The exterior walls of the chimney paint 573 m2 of concrete sand。
10, 50 x 5 flat iron 48 tracks reinforced。
11, hardening 48 m x 8。
12. Internal wall acid-resistant sludge 460 m2。
13 the outer wall is painted with colour rings or plant signs。
