一种优化布置结构的锅炉空预器
By using a separate arrangement of the small and large tube boxes of the air preheater, and designing a small tube box at the cold end and a large tube box at the hot end, the problem of corrosion and blockage of traditional air preheaters in high-impurity fuel environments is solved, enabling low-cost and high-efficiency maintenance and replacement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU BOILER GRP CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional air preheaters are prone to low-temperature acid dew point corrosion and ash accumulation in high-impurity fuel combustion environments, leading to thinning of the tube wall, perforation, high maintenance costs, and long maintenance time.
The air preheater adopts a separate layout of small and large tube boxes, with the small tube box located at the cold end and the large tube box located at the hot end. The separate structure allows for independent replacement of the small tube box, avoiding complete disassembly.
It reduces maintenance time and costs, extends the service life of the air preheater, improves replacement efficiency, and reduces operation and maintenance costs.
Smart Images
Figure CN224516830U_ABST
Abstract
Claims
1. A boiler air preheater of optimized arrangement, characterized in that, It includes an air preheater frame that is fixedly installed in the flue. Multiple independent small tube box modules and large tube box modules are detachably installed in the air preheater frame. The small tube box modules and large tube box modules are arranged separately. The small tube box modules are arranged at the air inlet end of the air preheater, and the large tube box modules are arranged at the air outlet end of the air preheater.
2. A boiler air preheater of optimized arrangement according to claim 1, characterized in that, Expansion joints and flue gas duct liner plates are fixedly installed on the air preheater frame in sequence.
3. The optimized arrangement boiler air preheater as claimed in claim 1 wherein, The air preheater frame is sequentially welded to the expansion joint and the flue liner to form a sealed flue.
4. The optimally arranged boiler air preheater according to claim 2, characterized in that, The upper end of the flue liner and the lower end of the air preheater are respectively fixedly installed inside the flue via flanges.
5. The optimally arranged boiler air preheater according to claim 1, wherein, The width of the small tube box module is less than 1.5 meters.