A comprehensive pipe gallery ventilation demisting system

The integrated pipe gallery ventilation and defogging system, utilizing mechanical ventilation components and an internal circulation structure, solves the problem of dampness inside the pipe gallery when the external humidity is high, achieving air dehumidification, purification, and safe circulation, and improving the dryness and safety of the internal environment of the pipe gallery.

CN121520668BActive Publication Date: 2026-04-17HUNAN HUAQING CONSTR ENG CO LTD
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Patent Information

Application Number
CN202610049640.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-01-15
Publication Date
2026-04-17
Estimated Expiration
2046-01-15

AI Technical Summary

Technical Problem

When the external humidity is greater than the humidity in the utility tunnel, existing technology cannot effectively isolate the humid air from the outside, resulting in continuous dampness inside the utility tunnel and affecting the safety of air circulation.

Method used

An integrated pipe gallery ventilation and defogging system is adopted, including mechanical ventilation components, circulation pipe groups, ventilation switches and intelligent monitoring terminals. By switching ventilation modes and internal circulation ventilation structures, the air is dehumidified and purified.

Benefits of technology

It effectively isolates external moisture, optimizes the air quality inside the utility tunnel, reduces humidity, ensures safe and dry air circulation, and reduces energy consumption.

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Abstract

This invention provides a ventilation and defogging system for integrated utility tunnel ventilation, relating to the field of ventilation control technology. The system further includes: a circulation pipe assembly fixedly connected to the main body of the utility tunnel and the ventilation shaft; and a mechanical ventilation component, the bottom of which is installed on top of a firewall, and the top of which is inserted into the ventilation shaft. Air within the main body of the utility tunnel is dehumidified and purified by the circulation pipe assembly, and then returned to the interior of the main body of the utility tunnel via the mechanical ventilation component. This isolates the external environment while achieving internal air circulation, dehumidification, and purification within the main body of the utility tunnel, thus optimizing the air quality inside the utility tunnel.
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