A marine emergency generator room ventilation system

Abstract

The utility model provides a kind of ventilation system of marine emergency generator room, the emergency generator room has two layers of deck and four around bulkhead, the ventilation system includes indoor exhaust structure air duct and mechanical air supply air pipe in the emergency generator room, natural air supply structure air duct is arranged on the deck plate surface above the emergency generator room, and outdoor exhaust structure air duct is arranged on the bulkhead outside of the emergency generator room side, the exhaust port of the outdoor exhaust structure air duct is located above the superstructure C deck of ship or at the chimney;Emergency generator in the emergency generator room is communicated with the indoor exhaust structure air duct by emergency generator hose, and the indoor exhaust structure air duct is communicated with the outdoor exhaust structure air duct.The ventilation system of marine emergency generator room of the utility model, efficiency and energy saving are considered, air volume can be dynamically adjusted, and extreme working conditions can be adapted.

Description

Technical Field

[0001] This utility model belongs to the field of marine ventilation technology, and specifically relates to a ventilation system for a marine emergency generator room. Background Technology

[0002] Traditional emergency generator rooms on ships typically employ single-duct ventilation systems, resulting in low heat dissipation efficiency. Relying on mechanical exhaust and ventilation, they fail to effectively utilize natural airflow within the structural ducts, leading to high-temperature risks for equipment, poor structural compatibility, and a lack of integrated ductwork design with the main structure. This makes them prone to structural damage during construction, resulting in ineffective ventilation. Emergency generators generate significant heat during operation; without proper ventilation, temperatures can rise rapidly, causing overheating, potential malfunctions, and even fires. Furthermore, the combustion of generator fuel produces harmful gases; accumulation of these gases within the room poses health threats and can be fatal to maintenance or operational personnel. Therefore, a ventilation system is essential to promptly remove these harmful gases and ensure air safety. Additionally, generator combustion requires a sufficient oxygen supply; insufficient ventilation reduces combustion efficiency, preventing normal generator operation or timely startup in emergencies. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a ventilation system for a ship's emergency generator room.

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

[0005] A ventilation system for a ship's emergency generator room is disclosed. The emergency generator room is enclosed by upper and lower decks and surrounding bulkheads. The ventilation system includes an indoor exhaust duct and a mechanical air supply duct located inside the emergency generator room, a natural air supply duct installed on the deck above the emergency generator room, and an outdoor exhaust duct located on the outer side of one bulkhead of the emergency generator room. The exhaust outlet of the outdoor exhaust duct is located above the C deck of the superstructure or at the funnel. The emergency generator located inside the emergency generator room is connected to the indoor exhaust duct via an emergency generator hose, and the indoor exhaust duct is connected to the outdoor exhaust duct.

[0006] Furthermore, the distance between the lower end of the exhaust port on the outdoor ventilation structure duct and the deck below the emergency generator room is not less than 3 meters, the horizontal distance between it and the living area, working area, and air conditioning inlet is not less than 5 meters, and the vertical distance is not less than 3 meters.

[0007] Furthermore, the vertical distance between the lowest point of the air inlet on the natural air supply structure duct and the deck surface above the emergency generator room is not less than 1400mm.

[0008] Furthermore, the outdoor exhaust structure duct includes a buffer section and an exhaust section arranged sequentially from top to bottom. The upper end face of the buffer section is located on the same horizontal plane as the deck surface above the emergency generator room. The width and length of the buffer section are both greater than the length and width of the exhaust section.

[0009] Furthermore, an inner air guide plate is provided at a corner inside the buffer section on the side away from the indoor exhaust structure duct, and the exhaust section is located above another corner inside the buffer section on the side away from the indoor exhaust structure duct.

[0010] Furthermore, an external air guide plate is connected between the bottom wall of the buffer section and the side wall of the emergency generator room near the buffer section. An air inlet for the buffer section is provided on the bottom wall of the buffer section located inside the external air guide plate. Two indoor exhaust duct outlets are provided at intervals from top to bottom on the side wall of the emergency generator room near the buffer section. The upper indoor exhaust duct outlet is positioned opposite to the buffer section, and the lower indoor exhaust duct outlet is positioned opposite to the external air guide plate.

[0011] Furthermore, an explosion-proof blower is installed inside the mechanical air supply duct, and a ventilation grille is installed on the air outlet of the mechanical air supply duct.

[0012] Furthermore, closable, weatherproof louvers are provided at the air inlet of the natural air supply structure duct, the air outlet of the outdoor exhaust structure duct, and the air inlet of the mechanical air supply duct.

[0013] This utility model discloses a ventilation system for a ship's emergency generator room. The natural air supply structure reduces fan energy consumption. The design features weatherproof louvers and explosion-proof fans, reducing the risk of explosion and exhaust gas leakage, thus enhancing safety. The natural air supply structure adopts a pre-embedded structure duct, which is seamlessly integrated with the main structure of the emergency generator room, improving space utilization, avoiding construction damage, facilitating maintenance, and reducing operation and maintenance costs. The system features dual-mode air supply, with mechanical air supply and structural natural air supply working in tandem to balance efficiency and energy saving. It can dynamically adjust the air volume to adapt to extreme working conditions. Attached Figure Description

[0014] Figure 1 This is a front view of the ventilation system for the ship's emergency generator room as described in this utility model.

[0015] Figure 2 yes Figure 1 View from the BB direction.

[0016] Figure 3 yes Figure 1 View from the CC direction.

[0017] Among them, 1-indoor exhaust ventilation duct, 2-mechanical air supply duct, 3-emergency generator room, 4-natural air supply ventilation duct, 5-outdoor exhaust ventilation duct, 6-emergency generator hose, 7-emergency generator, 8-inner air guide plate, 9-outer air guide plate, 10-ventilation grille, 11-explosion-proof air supply fan, 12-closeable weatherproof louver, 51-buffer section, 52-exhaust section. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1-2 As shown, a ventilation system for a ship's emergency generator room is disclosed. The emergency generator room 3 is enclosed by upper and lower decks and surrounding bulkheads. The ventilation system includes an indoor exhaust duct 1, a mechanical air supply duct 2, a natural air supply duct 4 located on the deck above the emergency generator room 3, and an outdoor exhaust duct 5 located on the outer side of one side bulkhead of the emergency generator room 3. The exhaust outlet of the outdoor exhaust duct 5 is located above the C deck of the ship's superstructure or at the chimney. An emergency generator 7 located in the emergency generator room 3 is connected to the indoor exhaust duct 1 via an emergency generator hose 6, and the indoor exhaust duct 1 is connected to the outdoor exhaust duct 5.

[0020] Understandably, the heat from the emergency generator is discharged independently through the emergency generator hose 6 connected to the indoor exhaust duct 1, and the outdoor exhaust duct 5 is set up independently to avoid sharing ducts with other systems such as engine room ventilation or air conditioning ventilation, to prevent backflow of exhaust gas or cross-contamination. The duct should be as short and straight as possible, avoiding sharp 90° bends to reduce resistance at bends.

[0021] To ensure rapid diffusion of exhaust gas, in some embodiments, the distance between the lower end of the exhaust port of the outdoor exhaust structure duct 5 and the deck below the emergency generator room 3 is not less than 3 meters, the horizontal distance between the exhaust port and the living area, working area and air conditioning inlet is not less than 5 meters, and the vertical distance is not less than 3 meters.

[0022] Furthermore, air inlets are provided on the front and rear side walls of the natural air supply structure duct 4 and on the side wall opposite to the exhaust section; the vertical distance between the lowest point of the air inlet on the natural air supply structure duct 4 and the deck surface above the emergency generator room 3 is not less than 1400mm.

[0023] A dual-mode air supply system is adopted. The natural air supply structure duct 4 is a pre-embedded air duct, located 1400mm from the B deck. The natural air supply structure duct 4 has three sides equipped with weatherproof louvers. The pre-embedded structure duct is integrated with the main structure, avoiding construction damage, facilitating maintenance, and reducing maintenance costs.

[0024] Furthermore, the outdoor exhaust structure duct 5 includes a buffer section 51 and an exhaust section 52 arranged sequentially from top to bottom. The upper end surface of the buffer section 51 is located on the same horizontal plane as the deck surface above the emergency generator room 3. The width and length of the buffer section 51 are both greater than the length and width of the exhaust section 52.

[0025] An inner air guide plate 8 is provided at a corner inside the buffer section 51 on the side away from the indoor exhaust duct 1. The exhaust section 52 is located above another corner inside the buffer section 51 on the side away from the indoor exhaust duct 1. An outer air guide plate 9 is connected between the bottom wall of the buffer section 51 and the side wall of the emergency generator room 3 near the buffer section 51. An air inlet for the buffer section 51 is provided on the bottom wall of the buffer section 51 located inside the outer air guide plate 9. Two indoor exhaust duct 1 outlets are provided at intervals from top to bottom on the side wall of the emergency generator room 3 near the buffer section 51. The upper indoor exhaust duct 1 outlet is positioned opposite the buffer section 51, and the lower indoor exhaust duct 1 outlet is positioned opposite the outer air guide plate 9. The angle between the outer air guide plate 9 and the bottom wall of the buffer section 51 is an obtuse angle.

[0026] It is understandable that the inner air guide plate 8 and the outer air guide plate 9 can reduce airflow resistance.

[0027] An explosion-proof blower 11 is installed inside the mechanical air supply duct 2, and a ventilation grille 10 is installed on the air outlet of the mechanical air supply duct 2. Closable, weather-tight louvers 12 are installed at the air inlet of the natural air supply structure duct 4, the air outlet of the outdoor exhaust structure duct 5, and the air inlet of the mechanical air supply duct 2. The explosion-proof blower 11 is connected to the mechanical air supply duct 2, and is linked to the generator to start and stop, providing the oxygen required for combustion, regulating the airflow and the opening and closing of the louvers, and maintaining a slightly negative pressure environment in the combustion chamber.

[0028] 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 ventilation system for a ship's emergency generator room, wherein the emergency generator room is enclosed by upper and lower decks and surrounding bulkheads, characterized in that, The ventilation system includes an indoor exhaust duct and mechanical air supply duct located in the emergency generator room, a natural air supply duct installed on the deck above the emergency generator room, and an outdoor exhaust duct located on the outside of one side bulkhead of the emergency generator room. The exhaust outlet of the outdoor exhaust duct is located above the C deck of the superstructure or at the chimney. The emergency generator located in the emergency generator room is connected to the indoor exhaust duct via an emergency generator hose, and the indoor exhaust duct is connected to the outdoor exhaust duct.

2. The ventilation system for the ship's emergency generator room according to claim 1, characterized in that, The distance between the lower end of the exhaust port on the outdoor ventilation structure duct and the deck below the emergency generator room shall not be less than 3 meters, the horizontal distance between it and the living area, working area and air conditioning inlet shall not be less than 5 meters, and the vertical distance shall not be less than 3 meters.

3. The ventilation system for the ship's emergency generator room according to claim 1, characterized in that, The vertical distance between the lowest point of the air inlet of the natural air supply structure duct and the deck surface above the emergency generator room shall not be less than 1400mm.

4. The ventilation system for the ship's emergency generator room according to claim 1, characterized in that, The outdoor exhaust structure includes a buffer section and an exhaust section arranged sequentially from top to bottom. The upper end face of the buffer section is on the same horizontal plane as the deck above the emergency generator room. The width and length of the buffer section are both greater than the length and width of the exhaust section.

5. The ventilation system for the ship's emergency generator room according to claim 4, characterized in that, An inner air guide plate is provided at a corner inside the buffer section on the side away from the indoor exhaust structure duct, and the exhaust section is located above another corner inside the buffer section on the side away from the indoor exhaust structure duct.

6. The ventilation system for the ship's emergency generator room according to claim 5, characterized in that, An external air guide plate is connected between the bottom wall of the buffer section and the side wall of the emergency generator room near the buffer section. An air inlet for the buffer section is provided on the bottom wall of the buffer section located inside the external air guide plate. Two indoor exhaust duct outlets are provided at intervals from top to bottom on the side wall of the emergency generator room near the buffer section. The upper indoor exhaust duct outlet is positioned opposite to the buffer section, and the lower indoor exhaust duct outlet is positioned opposite to the external air guide plate.

7. The ventilation system for the ship's emergency generator room according to claim 1, characterized in that, An explosion-proof blower is installed inside the mechanical air supply duct, and a ventilation grille is installed on the air outlet of the mechanical air supply duct.

8. The ventilation system for the ship's emergency generator room according to claim 1, characterized in that, All three air ducts are equipped with closable, weatherproof louvers: the air inlet of the natural air supply structure duct, the air outlet of the outdoor exhaust structure duct, and the air inlet of the mechanical air supply duct.

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