Heat exchange tube and tube plate connecting structure
By setting a tapered weld overlay and a flow guiding surface at the connection between the heat exchange tube and the tube sheet, combined with the expansion groove structure, the problems of blockage and erosion under high solids and high viscosity media are solved, the connection strength and stability are improved, and the frequency of equipment failure and operation and maintenance costs are reduced.
CN122408528APending Publication Date: 2026-07-17CHINA SHENHUA COAL TO LIQUID & CHEMICAL ORDOS COAL LIQUEFACTION CO ORDOS CITY +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA SHENHUA COAL TO LIQUID & CHEMICAL ORDOS COAL LIQUEFACTION CO ORDOS CITY
- Filing Date
- 2026-06-09
- Publication Date
- 2026-07-17
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Figure CN122408528A_ABST
Abstract
本公开涉及一种换热管与管板连接结构，包括管板以及穿设于所述管板的管孔内的换热管，所述管板的一侧为管程侧，在管程侧，所述换热管的端面低于所述管板的端面，且在二者之间焊接形成有堆焊层，所述堆焊层的横截面自所述管板的端面向所述换热管的端面逐渐减小，所述堆焊层的表面形成与所述换热管内壁平滑过渡的导流面，所述管孔的内壁设有胀槽，所述换热管与所述管板通过所述胀槽胀接固定。这样，通过内凹式换热管结构搭配渐缩式堆焊导流面，实现流道平滑过渡，消除流通死角，可防止高固高粘介质沉积结焦与管口堵塞。管孔胀槽胀接固定，大幅提升管束连接强度与稳定性，有效降低设备故障率与运维成本，保障设备长周期稳定运行。
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