Weatherproof ventilator for PCTC ship

By designing a weatherproof ventilation duct, and adopting a circular elbow ventilation duct, steel mesh and threaded connection structure, the problem of wind and rain backflow was solved, the stability and safety of cabin exhaust ventilation were improved, and the manufacturing cost was reduced.

CN224075755UActive Publication Date: 2026-04-03CHINA MERCHANTS JINLING SHIPBUILDING (JIANGSU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-13
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing ship ventilation ducts are prone to backflow of wind and rain when the louvers are opened, which can affect the normal operation of the machinery inside the cabin. Furthermore, traditional louvers cannot effectively protect against strong winds and rain.

Method used

Design a windproof and rainproof ventilation duct, which adopts a circular elbow ventilation duct body, steel mesh, windproof and rainproof cover and threaded connection structure. The opening and closing of the cover is achieved by tightening and loosening the nuts. Combined with the sealing ring plate and sealing ring, it ensures that wind and rain do not backflow.

Benefits of technology

It effectively prevents wind and rain backflow, improves cabin ventilation stability and ship navigation safety, reduces manufacturing costs, and increases enterprise efficiency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224075755U_ABST
    Figure CN224075755U_ABST
Patent Text Reader

Abstract

The utility model discloses a weatherproof ventilator for a PCTC ship, which comprises a round elbow ventilator body and a weather-tight cover, a steel screen is arranged in a ventilation opening of the round elbow ventilator body, the weather-tight cover is arranged on the outer side of the steel screen, and the round elbow ventilator body and the weather-tight cover are connected through a bolt. Through holes are formed in the center position of the weather tight cover and the center position of the steel plate net, meanwhile, nuts are fixed to the center position of the inner side of the steel plate net and the center position of the inner side of the weather tight cover respectively, and a full-thread screw is in threaded connection with the upper nut located on the steel plate net. And the lower end of the full-thread screw rod is in threaded connection with a nut positioned on the weather tight cover. According to the windproof and rainproof ventilator for the PCTC ship, the ventilator can be rapidly closed, so that wind and rain can be effectively prevented from flowing backwards into a cabin, and the stability of cabin exhaust and the safety of ship navigation are improved.
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Description

Technical Field

[0001] This utility model belongs to the field of marine ventilation technology, and specifically relates to a weatherproof ventilation duct for PCTC ships. Background Technology

[0002] Ship ventilation ducts maintain air circulation in the cabin, expel excess heat generated by machinery, and prevent wind and rain from flowing back into the cabin and endangering the ship's navigation safety. Currently, louvers are commonly used for ventilation on ships for air exchange. However, opening louvers can easily cause wind and rain to enter, greatly reducing the ventilation effect in the room and hindering the normal operation of the machinery in the cabin. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a weatherproof ventilation duct for PCTC ships, which has a simple structure, is easy to operate, and can meet the ventilation requirements of various compartments on PCTC ships.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A weatherproof ventilation duct for PCTC vessels includes a circular elbow ventilation duct body and a weatherproof cover. A steel mesh is provided inside the ventilation opening of the circular elbow ventilation duct body. The weatherproof cover is located on the outside of the steel mesh. A through hole is provided at the center of both the weatherproof cover and the steel mesh. A nut is fixed at the center of the inner side of both the steel mesh and the weatherproof cover. A fully threaded screw is screwed to the upper nut located on the steel mesh, and the lower end of the fully threaded screw is screwed to the nut located on the weatherproof cover.

[0006] Furthermore, a handle is attached to the outer surface of the weatherproof cover.

[0007] Furthermore, a side through hole is opened on the inner side of the weatherproof cover, and a nut is fixed at the upper part of the side through hole. The upper end of the handle passes through the side through hole and is screwed to the nut located at its upper part.

[0008] Furthermore, a welded web plate is fixed at the end of the circular elbow ventilation duct body away from the weatherproof cover, and the circular elbow ventilation duct body is connected to the hull structure through the welded web plate.

[0009] Furthermore, a sealing ring plate is fixed on the outer peripheral wall of the port of the circular elbow ventilation duct body near the end of the weatherproof cover, and an annular sealing ring is fixed on the inner side of the weatherproof cover. When the circular elbow ventilation duct body is closed, the sealing ring is tightly fitted with the sealing ring plate.

[0010] Furthermore, the nut located on the side of the weathersealable cover is located inside the sealing ring.

[0011] This utility model discloses a weatherproof ventilation duct for PCTC ships. Through quick-closing of the duct, it effectively prevents wind and rain from flowing back into the cabin, improving the stability of cabin ventilation and the safety of ship navigation. In use, the weatherproof cover can be opened and closed simply by tightening and loosening nuts. Compared to marine louvers, its biggest advantage is that it can minimize the impact of external factors on personnel and machinery inside the cabin during heavy rain and storms. Compared to purchasing traditional louvers, shipyards can reduce manufacturing costs, providing a valuable reference for cost reduction, efficiency improvement, and quality enhancement. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the weatherproof ventilation duct for PCTC ships described in this utility model.

[0013] Among them, 1-welded web plate, 2-circular elbow ventilation cylinder body, 3-screw, 4-nut, 5-steel mesh, 6-weatherproof cover, 7-hand rod, 8-sealing ring plate, 9-sealing ring. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] like Figure 1 As shown, a weatherproof ventilation duct for PCTC ships includes a circular elbow ventilation duct body 2 and a weatherproof cover 6. A steel mesh 5 is provided inside the ventilation opening of the circular elbow ventilation duct body 2. The weatherproof cover 6 is located on the outside of the steel mesh 5. Through holes are provided at the center of both the weatherproof cover 6 and the steel mesh 5. A nut 4 is fixed at the center of the inner side of both the steel mesh 5 and the weatherproof cover 6. A fully threaded screw 3 is screwed to the upper nut 4 on the steel mesh 5, and the lower end of the fully threaded screw 3 is screwed to the nut 4 on the weatherproof cover 6. A welded web plate 1 is fixed at the end of the circular elbow ventilation duct body 2 away from the weatherproof cover 6. The circular elbow ventilation duct body 2 is connected to the hull structure through the welded web plate 1.

[0016] Understandably, the ventilation duct can be opened and closed by rotating the windproof and rainproof cover 6 to move it up and down.

[0017] In some embodiments, a handle 7 is connected to the outer surface of the weatherproof cover 6 to facilitate rotation.

[0018] Specifically, a side through hole is opened on the inner side of the weatherproof cover 6, and a nut 4 is fixed at the upper part of the side through hole. The upper end of the handle 7 passes through the side through hole and is screwed to the nut 4 located at its upper part.

[0019] Furthermore, a sealing ring plate 8 is fixed on the outer peripheral side wall of the port of the circular elbow ventilation duct body 2 near the end of the weatherproof cover 6, and an annular sealing ring 9 is fixed on the inner side of the weatherproof cover 6. When the circular elbow ventilation duct body 2 is closed, the sealing ring 9 is tightly attached to the sealing ring plate 8; the nut 4 located on the side of the weatherproof cover 6 is located inside the sealing ring 9.

[0020] Those skilled in the art should understand that the above description is merely a specific embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A weatherproof and ventilated duct for PCTC ships, characterized in that, The device includes a circular elbow ventilation duct body and a weatherproof cover. A steel mesh is installed inside the ventilation opening of the circular elbow ventilation duct body. The weatherproof cover is located on the outside of the steel mesh. A through hole is opened at the center of both the weatherproof cover and the steel mesh. A nut is fixed at the center of the inner side of both the steel mesh and the weatherproof cover. A fully threaded screw is screwed to the upper nut located on the steel mesh, and the lower end of the fully threaded screw is screwed to the nut located on the weatherproof cover.

2. The weatherproof ventilation duct for PCTC ships according to claim 1, characterized in that, A handle is attached to the outer surface of the weatherproof cover.

3. The weatherproof ventilation duct for PCTC ships according to claim 2, characterized in that, A side through hole is made on the inner side of the weatherproof cover, and a nut is fixed at the upper part of the side through hole. The upper end of the handle passes through the side through hole and is screwed to the nut located at its upper part.

4. The weatherproof ventilation duct for PCTC ships according to claim 1, characterized in that, Welded web plates are fixed at the ends of the circular elbow ventilation duct body away from the weatherproof cover, and the circular elbow ventilation duct body is connected to the hull structure through the welded web plates.

5. The weatherproof ventilation duct for PCTC ships according to claim 3, characterized in that, A sealing ring plate is fixed on the outer peripheral wall of the port of the circular elbow ventilation duct body near the end of the weatherproof cover, and an annular sealing ring is fixed on the inner side of the weatherproof cover. When the circular elbow ventilation duct body is closed, the sealing ring is tightly fitted with the sealing ring plate.

6. The weatherproof ventilation duct for PCTC ships according to claim 5, characterized in that, The nut located on the side of the weathersealable cover is located inside the sealing ring.