Reasons and analysis of the detachment of the central cylinder of the boiler cyclone separator

2024-11-09 16:56

The vast majority of center tube detachment is due to improper design.

The vast majority of center tube detachment is due to improper design and installation methods, which are caused by design defects at the boiler factory. There are currently several installation methods: 1. Welding hanging type, 2. Bolt pull rod type, 3. External lower suspension bar hanging type, 4. Free hanging type.
The first method is to use heat-resistant steel to directly weld the central cylinder, which can easily cause the welded parts to break and the central cylinder to fall off due to expansion issues.
2. The method of fixing the central cylinder with bolt tie rods in the circumferential direction at the upper opening of the central cylinder cannot solve the problem of expansion well. It often causes the tie rods to break due to the deviation of expansion stress, resulting in the deviation or detachment of the central cylinder.
3. External hanging bars often use complex mechanical coordination to hang the central cylinder, which theoretically can solve the problem of expansion. However, the direction of thermal expansion of the central cylinder cannot be so uniform, and long-term operation often causes the cylinder to deflect and fall off.
4. The free hanging type does not use welding or fixing in the installation method, which can allow the cylinder to expand freely and effectively solve the problem of center cylinder detachment.

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