一种聚烯烃风机用密封冲洗结构及冲洗方法
By adopting a series two-stage sealing design and process gas flushing in polyolefin fans, the problem of easy foaming of mechanical seals has been solved, achieving long-term stable operation and safe and reliable gas delivery.
CN116877476BActive Publication Date: 2026-07-17BEIJING AEROSPACE PETROCHEM TECH & EQUIP ENG CORP LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING AEROSPACE PETROCHEM TECH & EQUIP ENG CORP LTD
- Filing Date
- 2023-06-28
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The mechanical seals of existing polyolefin fans are prone to blistering during the transportation of flammable and explosive olefin gases, leading to seal failure, reduced service life, difficult maintenance, and poor safety.
Method used
It adopts a series two-stage semi-cascade mechanical seal type. The first stage seal is flushed with olefin gas, and the second stage seal is flushed with external process buffer gas. Combined with labyrinth seal and solid-liquid collector, it can achieve long-term stable operation.
Benefits of technology
It improves the stability and service life of mechanical seals, reduces maintenance difficulty and cost, enhances safety, and is suitable for high-pressure flammable and explosive gas transportation.
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Figure CN116877476B_ABST
Abstract
一种聚烯烃风机用密封冲洗结构及冲洗方法，涉及机械密封冲洗领域，密封冲洗结构包括聚烯烃风机的壳体、第一级半集装式机械密封、第二级半集装式机械密封和迷宫密封、一级密封冲洗管线和二级密封冲洗管线，壳体设有输送通道；第一级半集装式机械密封到迷宫密封之间为第一级密封腔体，第一级半集装式机械密封和第二级半集装式机械密封之间为第二级密封腔体；一级密封冲洗管线与第一级密封腔体连通，第一级密封腔体与输送通道连通；二级密封冲洗管线包括二级密封冲洗入口管线和二级密封冲洗出口管线，二级密封冲洗入口管线和二级密封冲洗出口管线均与第二级密封腔体连通。实现机械密封的长期稳定工作。
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