Low-drag fire damper for ships

By designing a dynamic sealing structure and a transmission structure, the problem of sealing failure of the guide vanes of the fireproof air damper at high temperatures was solved, achieving effective sealing in high-temperature environments and improving the fireproof performance and safety of the fireproof air damper.

CN224693971UActive Publication Date: 2026-08-28JIANGSU SANXIAN MARINE EQUIPMENT CO LTD
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Patent Information

Application Number
CN202522251958.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-24
Publication Date
2026-08-28
Estimated Expiration
2035-10-24

AI Technical Summary

Technical Problem

The existing fireproof air damper guide vanes are prone to deformation of the sealing material under high temperature conditions, leading to sealing failure and reducing the fireproof effect.

Method used

Employing a dynamic sealing and transmission structure, the fire retardant is formed by the sliding and squeezing of the sponge block through the abutment plate, causing the fire retardant to flow out from the overflow hole and form a fire retardant liquid film. Combined with the inclined transmission groove and the rolling conversion motion of the rollers, the output force is increased to achieve effective sealing.

Benefits of technology

Maintaining a tight seal in high-temperature environments effectively prevents flames and high-temperature gases from spreading through the gap between the blades and the main body of the damper, thus improving fire resistance and safety.

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Abstract

The utility model relates to low wind resistance ship fire -resistant damper guide vane belongs to fire -resistant damper technical field, including vane main part, set up in the damper main body of vane main part outside and can detachably connect in vane main part outside's apron, the inside of vane main part is provided with the dynamic sealing structure extending to its inside, the inside of vane main part is provided with the transmission structure for and dynamic sealing structure cooperation uses. The low wind resistance ship fire -resistant damper guide vane, by abutting plate sliding under external force, extrude porous sponge block by transmission structure, make fire -retardant agent flow from overflow hole, form fire -retardant liquid membrane between vane main part and damper main body, prevent flame and high -temperature gas spread, through the horizontal movement of transmission block is converted into the vertical movement of extrusion plate through the conversion of gyro wheel and inclined transmission groove, realize big output force with small input force, ensure that fire -retardant agent flows smoothly, improve fire -resistant performance and security.
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