Fire extinguishing system of roll-on-roll-off ship for transporting electric vehicles

Abstract

The utility model discloses a fire-fighting system of a roll-on-roll-off ship for transporting electric automobiles, the roll-on-roll-off ship comprises a deck of a vehicle roll-on-roll-off place, a plurality of T-shaped beams are arranged on the lower end face of the deck of the vehicle roll-on-roll-off place, and the fire-fighting system comprises a fire-fighting pump, a plurality of fire-fighting main pipelines, a plurality of fire-fighting nozzles, a plurality of temperature-sensing and smoke-sensing sensors and a monitoring system. The plurality of temperature and smoke sensing sensors and the plurality of fire-fighting nozzles are respectively arranged under the chassis of the electric vehicle, the fire-fighting pump is connected with the inlet end of the fire-fighting main pipeline, the plurality of fire-fighting main pipelines are respectively positioned under the deck of the first-layer vehicle roll-on and roll-off station, each fire-fighting main pipeline is connected with the plurality of fire-fighting nozzles through the plurality of fire-fighting branch pipes, and the fire-fighting branch pipes are connected with the fire-fighting nozzles. Each fire-fighting branch pipe is provided with an electromagnetic valve, and the electromagnetic valves, the temperature-sensing and smoke-sensing sensors and the fire-fighting pumps are all connected with the monitoring system in an electric control mode. The fire extinguishing system of the roll-on-roll-off ship for transporting the electric automobiles has the advantages of real-time monitoring, high automation degree, small loss range and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of ship fire protection, in particular to a fire protection system of a roll-on / roll-off ship for transporting electric vehicles. Background Art

[0002] With the rapid development of electric vehicles, it is an inevitable trend for electric vehicles to become mainstream. Electric vehicles are transported by ro-ro ships, that is, electric vehicles are directly loaded onto the ship and placed in a specific ro-ro location. This mode of transportation has the advantages of flexibility, reliability, and large transportation volume, which has created a logistics mode dominated by water transportation of electric vehicles.

[0003] Of course, unlike traditional fuel vehicles, electric vehicles carry a large number of power batteries, which are the core components of electric vehicles. As an energy storage device, power batteries are susceptible to external environmental stimulation and their own manufacturing defects, which can cause thermal runaway and fire. They burn quickly and at high temperatures, which can easily trigger chain reactions and even explosions.

[0004] Characteristics of electric vehicle power battery fires: difficult to extinguish / high burning temperature / rapid burning. The fixed fire extinguishing systems currently used by ships carrying cars have the following shortcomings in extinguishing fires caused by car power batteries:

[0005] Fixed CO2 gas fire extinguishing systems cannot suffocate the self-oxygen-supplied combustion inside the power battery of lithium-ion electric vehicles, and have no cooling effect. They cannot prevent the spread of thermal runaway between different single cells. Even if the external flame is extinguished, it is easy for it to reignite.

[0006] The fixed pressure water mist fire extinguishing system can only spray downward from the top of the car. It is blocked by the car shell and the battery pack packaging shell and cannot directly act on the single battery that has thermal runaway and burns. It cannot extinguish the power battery fire and is prone to re-ignition.

[0007] Although the high-multiplicity foam fire extinguishing system can reach the surface of the battery pack at the bottom of the car through foam accumulation, the foam has a low water content and a limited cooling effect, and cannot prevent the combustion inside the battery pack. The foam needs to be replenished continuously for a long time until the entire vehicle is burned out. If the foam spraying is stopped during this period, it is easy for the fire to re-ignite. Utility Model Content

[0008] In order to solve the above technical problems, the utility model provides a fire protection system for a ro-ro ship transporting electric vehicles. After each vehicle is parked, the temperature and smoke sensor will monitor the temperature and smoke at the bottom of each vehicle. In the event of an abnormality, the corresponding temperature and smoke sensor will give an alarm, and the fire protection solenoid valve of the corresponding vehicle will be opened through the coded address of the alarm temperature and smoke sensor to extinguish the fire. The design of the fire protection system has the advantages of real-time monitoring, high degree of automation, and small loss range, and will surely be widely promoted in ship design and actual construction.

[0009] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A fire fighting system for a ro-ro ship for transporting electric vehicles, the ro-ro ship comprising a vehicle ro-ro deck, a plurality of T-beams being arranged on the lower end surface of the vehicle ro-ro deck, the fire fighting system comprising a fire pump, a plurality of main fire lines, a plurality of fire nozzles, a plurality of temperature and smoke sensors and a monitoring system, the plurality of temperature and smoke sensors and the plurality of fire nozzles being respectively arranged directly below an electric vehicle chassis, the fire pump being connected to an inlet end of the main fire line, the plurality of main fire lines being respectively arranged below a layer of the vehicle ro-ro deck, each main fire line being connected to a plurality of fire nozzles via a plurality of fire branch pipes, a solenoid valve being arranged on each fire branch pipe, the solenoid valve, the temperature and smoke sensors and the fire pump being all electrically connected to the monitoring system.

[0011] Furthermore, a plurality of deck openings are provided on the deck of each layer of the vehicle roll-on / roll-off space, and the plurality of deck openings are respectively located directly below an electric vehicle. A deck recessed structure with an open upper portion is fixed to the lower side of each deck opening, and the fire nozzle and the temperature and smoke sensor located directly below each electric vehicle are fixed in the deck recessed structure.

[0012] Furthermore, the upper end surface of the deck recessed structural member is lower than the upper end surface of the deck of the vehicle roll-on / roll-off space where it is located.

[0013] Furthermore, a hollow grille for sealing the upper opening of the sunken structural member of the deck is detachably provided in the deck opening, and the upper end surface of the hollow grille is not higher than the upper end surface of the deck of the vehicle roll-on / roll-off space.

[0014] Furthermore, the fire branch pipeline passes through the deck recessed structure and is connected to the fire nozzle.

[0015] Furthermore, the end surface of the outlet end of the fire nozzle abuts against the hollow grille.

[0016] Furthermore, the height of the fire main pipeline cannot exceed the height of the T-beam of the vehicle roll-on / roll-off space.

[0017] Compared with the prior art, the ship cable bracket installation structure of the utility model can improve the stiffness of the connection point between the cable bracket and the deck and reduce the vibration risk of the cable bracket and the local deck; the I-shaped flat steel structure with an angled cut away from the air is welded to the deck by intermittent welding, which can reduce the welding stress and deformation of the connection point. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the arrangement of the fire protection system of the ro-ro ship for transporting electric vehicles according to the utility model;

[0019] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.

[0020] Among them, 1-fire pump, 2-fire main line, 3-vehicle roll-on / roll-off space, 4-electric car, 5-vehicle body battery panel, 6-fire nozzle, 7-temperature and smoke sensor, 8-solenoid valve, 9-hollow grille, 10-deck recessed structure, 11-monitoring system, 12-T-beam, 13-vehicle roll-on / roll-off space deck, 14-fire branch pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-Figure 2As shown, a fire protection system of a ro-ro ship for transporting electric vehicles, the ro-ro ship includes a vehicle ro-ro deck 13, a plurality of T-beams 12 are arranged on the lower end surface of the vehicle ro-ro deck 13, the fire protection system includes a fire pump 1, a plurality of fire main lines 2, a plurality of fire nozzles 6, a plurality of temperature and smoke sensors 7 and a monitoring system, the plurality of temperature and smoke sensors 7 and the plurality of fire nozzles 6 are respectively arranged directly below a chassis of an electric vehicle 4; a plurality of deck openings are opened on each layer of the vehicle ro-ro deck 13, the plurality of deck openings are respectively located directly below an electric vehicle 4, a deck recessed structure 10 with an open upper portion is fixed to the lower side of each deck opening, the fire nozzles 6 and the temperature and smoke sensors 7 located directly below each electric vehicle 4 are fixed in the deck recessed structure 10, the deck recessed structure 10 The upper end surface of the deck 13 of the vehicle roll-on / roll-off space is lower than the upper end surface of the deck 13 where it is located; a hollow grille 9 for blocking the upper opening of the deck recessed structure 10 can be detachably provided in the deck opening, and the upper end surface of the hollow grille 9 is not higher than the upper end surface of the deck 13 of the vehicle roll-on / roll-off space; the fire pump 1 is connected to the inlet end of the fire main line 2, and multiple fire main lines 2 are respectively located below a layer of the deck 13 of the vehicle roll-on / roll-off space, and each fire main line 2 is connected to multiple fire nozzles 6 through multiple fire branch pipes 14 passing through the deck recessed structure 10, and the outlet end surface of the fire nozzle 6 abuts against the hollow grille 9; one is provided on each fire branch pipe 14, and the solenoid valve 8, the temperature and smoke sensor 7 and the fire pump 1 are all electrically connected to the monitoring system; the height of the fire main line 2 cannot exceed the height of the T-beam 12 of the vehicle roll-on / roll-off space.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire fighting system for a ro-ro ship transporting electric vehicles, the ro-ro ship comprising a vehicle ro-ro deck, a plurality of T-beams are arranged on the lower end surface of the vehicle ro-ro deck, characterized in that: The fire fighting system comprises a fire pump, a plurality of fire main lines, a plurality of fire nozzles, a plurality of temperature and smoke sensors and a monitoring system. The plurality of temperature and smoke sensors and the plurality of fire nozzles are respectively arranged directly below a chassis of an electric vehicle. The fire pump is connected to the inlet end of the fire main line. The plurality of fire main lines are respectively located below a deck of a vehicle roll-on / roll-off space. Each fire main line is connected to a plurality of fire nozzles through a plurality of fire branch pipes. A solenoid valve is arranged on each fire branch pipe. The solenoid valve, the temperature and smoke sensors and the fire pump are all electrically connected to the monitoring system.

2. The fire fighting system for a ro-ro ship transporting electric vehicles according to claim 1, characterized in that: A plurality of deck openings are provided on the deck of each layer of the vehicle roll-on / roll-off space, and the plurality of deck openings are respectively located directly below an electric vehicle. A deck recessed structural member with an open upper portion is fixed to the lower side of each deck opening, and a fire nozzle and a temperature and smoke sensor located directly below each electric vehicle are fixed in the deck recessed structural member.

3. The fire fighting system for a ro-ro ship transporting electric vehicles according to claim 2, characterized in that: The upper end surface of the deck recessed structural member is lower than the upper end surface of the deck of the vehicle roll-on / roll-off space where the deck recessed structural member is located.

4. The fire fighting system for a ro-ro ship transporting electric vehicles according to claim 3, characterized in that: A hollow grille for sealing the upper opening of the sunken structural member of the deck is detachably provided in the deck opening, and the upper end surface of the hollow grille is not higher than the upper end surface of the deck of the vehicle roll-on / roll-off space.

5. The fire fighting system for a ro-ro ship transporting electric vehicles according to claim 2, characterized in that: The fire branch pipeline passes through the deck recessed structural member and is connected with the fire nozzle.

6. The fire fighting system for a ro-ro ship transporting electric vehicles according to claim 4, characterized in that: The outlet end face of the fire nozzle abuts against the hollow grille.

7. The fire fighting system for a ro-ro ship transporting electric vehicles according to claim 1, characterized in that: The height of the fire main pipe cannot exceed the height of the T-beam of the vehicle roll-on / roll-off space.

Images