Pocket-type subway station piston air duct mechanism
By setting up a three-dimensional pocket-shaped civil engineering section inside the piston air duct, with openings on different surfaces, the problem of wasted underground space caused by excessively wide internal partition walls in existing technologies is solved, thus achieving full utilization of piston air duct space and saving investment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 青岛市地铁规划设计院有限公司
- Filing Date
- 2025-08-11
- Publication Date
- 2026-06-16
AI Technical Summary
In existing piston duct structures, the excessive width of the inner partition walls leads to wasted underground space and increased civil engineering investment.
The use of pocket-shaped civil engineering sections involves setting up three-dimensional pocket-shaped civil engineering sections on the partition walls, with openings on different sides for pressure relief, pressure replenishment, and smoke exhaust, thereby reducing the area of the partition walls and making full use of the space.
It effectively reduces the area of the partition wall, lowers the investment and cost of subway construction, and meets the needs of pressure relief, pressure replenishment and smoke exhaust.
Smart Images

Figure CN224365037U_ABST