一种应用于空预器热端的弹性热驱动补偿密封装置及其安装结构
By using an elastic thermally driven compensating sealing device, the sealing gap is automatically compensated by the thermal expansion and contraction mechanism, which solves the problems of rapid wear and high leakage rate of the hot end sealing device of the air preheater under high temperature environment, and achieves low cost, reliable sealing effect and long-term stable operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG XINGHE INTELLIGENT DEV TECH CO LTD
- Filing Date
- 2022-10-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing air preheater hot end sealing devices wear out quickly in high-temperature and dusty environments, have poor structural reliability, and are difficult to effectively compensate for the triangular air leakage area, resulting in a high air leakage rate, especially in large-capacity units where the problem is more pronounced.
An elastic thermally driven compensation sealing device is adopted, including a cantilever thermally curved plate, a thermal expansion driving plate, a shrinkage reinforcing rib, and a fixed-distance locking sleeve. The sealing gap is automatically compensated through the thermal expansion and contraction mechanism. The cantilever thermally curved plate undergoes upward deformation under the drive of the thermal expansion driving plate and has elastic yielding ability during impact and friction.
It significantly reduces the air preheater leakage rate, improves operational safety and reliability, has self-adaptive capabilities, extends service life, and adapts to abnormal operating conditions.
Smart Images
Figure CN115789258B_ABST