Supercharged fire extinguishing system for container ship and container ship

Abstract

The invention relates to a supercharged fire extinguishing system for a container ship, the supercharged fire extinguishing system comprises a booster pump, an electric valve, a water sprayer, a control unit and a fire extinguishing water pipeline, one end of the fire extinguishing water pipeline is connected to a ballast water pipeline at a ballast pump, and the other end of the fire extinguishing water pipeline is connected to the water sprayer; a booster pump and an electric valve are further arranged on the fire extinguishing water pipeline, the booster pump and the electric valve are both electrically connected to the control unit, one end of the fire extinguishing water pipeline is connected to the ballast water pipeline so that ballast water can be used as a water source of the fire extinguishing system, and the booster pump and the electric valve are arranged on the fire extinguishing water pipeline. The other end of the fire extinguishing water pipeline is connected with a water sprayer, the water sprayer is arranged at the highest position of the container ship, and the booster pump and the electric valve are both electrically connected with a control unit to achieve starting and stopping operation. According to the water sprayer, ballast water is directly used for extinguishing fire, and fire-fighting water columns ejected by the water sprayer can cover a deck area and a container area of the whole ship, so that the coverage range of the fire-fighting water is enlarged, and the fire-extinguishing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of shipbuilding, and in particular to a ship-based pressurized fire extinguishing system and a container ship containing the fire extinguishing system. Background Art

[0002] As container ships become larger and larger, and the number of dangerous goods storage areas increases, the original fire-fighting system is gradually unable to meet the actual fire-fighting needs. Therefore, shipowners often require the addition of a water fire-fighting system that can cover the entire container area of ​​the ship.

[0003] In the past, the water fire extinguishing system directly used the fire pump on board to supply water, and implemented the fire extinguishing function through the fire hydrants arranged on the main deck, both sides of the superstructure, and the bow. However, due to the limitation of the water supply pressure of the fire pump, the water column of the fire hydrant can only cover a very limited range. If more fire hydrants are added to increase the effective range of fire extinguishing, it is not economical, the use effect is not good, and it takes up space on board. Especially when the containers are fully loaded, it is difficult to effectively cover the spray range of the fire hydrant, which poses a fire hazard.

[0004] Fire hydrant pressure of conventional fire fighting system According to SOLAS Chapter II-2 2.1.6, all fire hydrants should maintain the following minimum pressure: 0.27N / mm 2 After conversion, the water spray distance is 51 meters. For a large container ship with a length of nearly 400 meters, it is obviously difficult to achieve timely and effective coverage in the length direction.

[0005] For example, Chinese patent CN 104587627A discloses a water fire extinguishing system for maintaining pressure and quantity in a ship's zero-consumption working condition, including a fire pump and a zero-consumption overboard pipe arranged on the fire pump, the water fire extinguishing system also includes: a power frequency pump suction pipe, a power frequency pump water supply pipe, a variable frequency pump suction pipe, a variable frequency pump water supply pipe, a variable frequency pump zero-consumption pipe, a seawater inlet section, a water fire extinguishing main pipe and a control box; the power frequency pump suction pipe and the variable frequency pump suction pipe are connected to the seawater inlet section at the same time, the power frequency pump water supply pipe and the variable frequency pump water supply pipe are connected to the water fire extinguishing main pipe at the same time, and the control box is respectively connected to the power frequency pump suction pipe, the power frequency pump water supply pipe, the variable frequency pump suction pipe, the variable frequency pump water supply pipe, the variable frequency pump zero-consumption pipe, the seawater inlet section and the water fire extinguishing main pipe, thereby meeting the requirements of maintaining the pipe network pressure and ensuring the minimum flow rate of the water fire extinguishing system under the zero-consumption working condition of the water fire extinguishing system. This solution still uses the fire water system for fire extinguishing. For large ship systems, its pressure is obviously not enough to achieve full coverage, which poses a safety hazard. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a marine pressurized fire extinguishing system and a container ship containing the fire extinguishing system. The fire extinguishing system of the present invention is required to be independent of the original fire fighting system, and a pressurized fire extinguishing system is added, which is mainly aimed at how to deal with a fire in the case of full containers, so that the fire fighting water column can timely and effectively cover the deck area and container area of ​​the entire ship, so as to improve the coverage and fire fighting efficiency of water fire fighting.

[0007] In order to achieve the above-mentioned object of the invention, the technical solution provided by the present invention is as follows:

[0008] The present invention aims at the problem that ordinary fire fighting systems cannot provide full coverage in time. It attempts to increase the fire fighting water pressure by adding a booster pump and arranging sprinklers at the highest point of the ship, so that the fire fighting water column can completely cover the deck area and container area of ​​the entire ship, thereby improving the coverage and fire fighting efficiency of water fire fighting. Specifically:

[0009] A pressurized fire extinguishing system for a container ship, wherein a ballast pump is provided in the engine room of the container ship, the ballast water pipeline where the ballast pump is located is connected to a seawater tank and a ballast tank and a discharge pipe outboard of the ship, and is used for filling and discharging water in the ballast tank on the container ship, and can also form a self-circulation of the ballast water pipeline system, the pressurized fire extinguishing system comprises a booster pump, an electric valve, a sprinkler, a control unit and a fire extinguishing water pipeline, one end of the fire extinguishing water pipeline is connected to the ballast water pipeline at the ballast pump, and the other end is connected to the sprinkler, a booster pump and an electric valve member are also provided on the fire extinguishing water pipeline, the booster pump and the electric valve are both electrically connected to the control unit, one end of the fire extinguishing water pipeline is connected to the ballast water pipeline where the ballast pump is located so as to use ballast water as a water source for the fire extinguishing system, the other end of the fire extinguishing water pipeline is connected to the sprinkler, the sprinkler is arranged at the highest position on the container ship, the highest position is the top of the engine room shed and the top of the superstructure, the booster pump and the electric valve are both electrically connected to the control unit to realize start and stop operations.

[0010] In a pressurized fire extinguishing system for a container ship of the present invention, two ballast pumps are arranged in the engine room, an engine room shed is arranged on the upper part of the engine room of the container ship, a superstructure is arranged in the middle part of the container ship, the engine room shed and the top of the superstructure each correspond to one set of the pressurized fire extinguishing system, each set of the pressurized fire extinguishing system is connected to the same ballast water pipeline, then the whole container ship has two sets of fire extinguishing water pipelines, each set of the fire extinguishing water pipelines is provided with a booster pump, an electric valve and a sprinkler, one set of sprinklers is arranged at the top of the engine room shed, and the other set of sprinklers is arranged at the top of the superstructure.

[0011] In a pressurized fire extinguishing system for container ships of the present invention, the ballast pump is arranged at the bottom layer of the engine room, and the total pressure head of the ballast pump is higher than the highest point of the ballast tank and at least not lower than the main deck position.

[0012] In a pressurized fire extinguishing system for container ships of the present invention, the number of the booster pumps is 4 in two groups, two booster pumps are provided in the main deck area of ​​the engine room shed, and two booster pumps are provided in the main deck area of ​​the superstructure. After pressurization, it is ensured that the water column sprayed by the sprinkler covers the entire main deck range of the ship, and its continuous water supply source comes from the ballast pump.

[0013] In a pressurized fire extinguishing system for a container ship of the present invention, there are two groups of sprinklers, each group has 4 sprinklers, and each group is arranged at the highest level of the superstructure and the highest level of the engine room shed respectively. The nozzles of the two sprinklers in each group are oriented towards the bow direction, and the nozzles of the other two sprinklers are oriented towards the stern direction. The two sprinklers in the same direction are arranged on the left and right sides respectively.

[0014] In a pressurized fire extinguishing system for a container ship of the present invention, further, the fire water column sprayed by the sprinkler can be adjusted in the horizontal and vertical directions by the angle of its own nozzle, so that the fire water column covers the entire main deck area of ​​the container ship.

[0015] In a pressurized fire extinguishing system for a container ship of the present invention, the control unit is arranged at three positions, namely, a cab control unit, a cabin fire control station control unit and a fire control station control unit located at the superstructure. The control unit at each position can independently implement water spraying fire extinguishing operation, and the control unit at any location in a fire situation can be controlled to implement fire extinguishing water spraying.

[0016] In a pressurized fire extinguishing system for a container ship of the present invention, the electric valve component includes an electric valve and an electric hydraulic valve, and the electric hydraulic valve is arranged on the main ballast water pipeline.

[0017] A fire extinguishing method of a pressurized fire extinguishing system for a container ship, the specific use process of which is as follows:

[0018] S1, start the pressurized fire extinguishing system, start the ballast pump first, and use the ballast water from the seawater tank or the container ship itself to establish the water supply pressure;

[0019] S2, opening relevant valves and starting the booster pump, the relevant valves including electric valves and electric hydraulic valves;

[0020] S3, operate the sprinkler to spray the water column at the spraying point toward the fire;

[0021] S4, after the fire is extinguished, the relevant pump groups and relevant valves are reset, and the relevant pump groups are the ballast pump and the booster pump.

[0022] A container ship is provided with the above-mentioned pressurized fire extinguishing system. When a fire occurs, the ship's own ballast water system is used as a water source to extinguish the fire covering the entire deck after secondary pressurization. The ballast water output by the ballast pump is pressurized again by a booster pump so that it can be sprayed out after increasing to a sufficient pressure.

[0023] Based on the above technical solution, the pressurized fire extinguishing system for container ships of the present invention has achieved the following beneficial effects through practical application:

[0024] 1. The overall concept of the pressurized fire extinguishing system of the present invention adopts the ship's own ballast water system as the source of water for fire extinguishing. By directly using the water supplied by the ship's ballast water system as the fire-fighting water source for fire extinguishing, it not only meets the secondary pressurization conditions of fire-fighting water but also provides a continuous and reliable water source, greatly reducing the design cost.

[0025] 2. The pressurized fire extinguishing system of the present invention is applied on large container ships. Sprinklers are arranged on the top of the engine room shed and the top of the superstructure respectively. By adjusting the angle of the sprinkler nozzle, the fire water column can fully cover the container loading area and deck area of ​​the whole ship, so as to achieve the effect of efficiently and accurately extinguishing the fire points in the container loading area and the deck area.

[0026] 3. The pressurized fire extinguishing system of the present invention can be arranged using the existing ballast water system and piping structure on board, and has the characteristics of simple design and layout and high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the arrangement of a pressurized water fire extinguishing system on a container ship according to the present invention.

[0029] Figure 2 The present invention is a schematic diagram of the pipeline distribution of a fire extinguishing water system in a pressurized water fire extinguishing system.

[0030] Figure 3 It is a schematic diagram of an embodiment of a sprinkler in a fire extinguishing water system in a pressurized water fire extinguishing system of the present invention.

[0031] Among them, 1-ballast pump, 2-boosting pump in the upper deck area, 3-boosting pump in the engine room deck area, 4-sprinkler group on the top of the upper building, 5-sprinkler group on the top of the engine room shed, 6-electric valve, 7-fire extinguishing water pipeline, 8-ballast water main pipeline, 9-electric hydraulic valve, 10-cab control unit, 11-engine room fire control station control unit, 12-fire control station control unit, 13-first control unit, 14-second control unit, 15-third control unit, 81-nearby ballast water pipeline branch, 71-first T-type connection point, 61-first electric valve, 31- Booster pump No. 1, 63—third electric valve, 91—boost pump outlet check valve No. 1, 62—second electric valve, 32—boost pump No. 2, 64—fourth electric valve, 92—boost pump outlet check valve No. 2, 72—second T-type connection point, 73—third T-type connection point, 74—fourth T-type connection point, 75—fifth T-type connection point, 65—fifth electric valve, 66—sixth electric valve, 67—seventh electric valve, 68—eighth electric valve, 51—right side rearward sprinkler, 52—left side rearward sprinkler, 53—right side forward sprinkler, 54—left side forward sprinkler. DETAILED DESCRIPTION

[0032] Hereinafter, we will further elaborate on a pressurized water fire extinguishing system and a container ship of the present invention in combination with the accompanying drawings and specific embodiments, so as to make its structural composition and working mode more clearly understood, but this shall not limit the protection scope of the present invention.

[0033] Example 1

[0034] like Figure 1 As shown, this embodiment is a pressurized fire extinguishing system for container ships. Based on the use of ballast water as the source of fire extinguishing water, sprinklers are respectively arranged at two locations on the container ship, one location is located on the top of the cabin shed at the stern of the container ship, and the other location is located on the top of the superstructure in the middle of the container ship. The purpose of this is to be able to cover the entire container ship with water spraying locations, especially spraying from the top to the front and rear locations, thereby providing a wider coverage for container ship fire extinguishing.

[0035] Two ballast pumps 1 are arranged on the bottom of the engine room of the container ship. The ballast pumps 1 serve as the power source for the input and output of ballast water in the ballast tank. An electric hydraulic valve 9 is arranged on the main ballast water pipeline 8 at the outlet of each ballast pump 1. Because the main ballast water pipeline 8 is relatively thick, the electric hydraulic valve 9 is used to realize the on-off of the main ballast water pipeline 8. In addition, two engine room deck area booster pumps 3 are arranged on the main deck of the engine room shed. The inlet pipelines of the two engine room deck area booster pumps 3 are introduced from the nearest main ballast pipeline 8 to boost the input ballast water. Moreover, the fire extinguishing water pipeline 7 connected to the outlet of the engine room deck area booster pump 3 is arranged to the top of the engine room shed, and the fire extinguishing water pipeline 7 is respectively connected to the electric valve 6 and the sprinkler group 5 on the top of the engine room shed. The electric valve 6 here is a valve specially designed to realize the on-off supply of fire extinguishing water to the sprinkler group 5 on the top of the engine room shed.

[0036] The booster fire extinguishing system is arranged in the superstructure with the same arrangement and working principle as the above-mentioned engine room shed. Specifically, two booster pumps 2 are arranged in the upper deck area on the main deck layer of the superstructure. The inlet pipeline of the booster pump 2 in the upper deck area also introduces ballast water from the nearby main ballast pipeline 8. The fire extinguishing water pipeline 7 connected to the outlet of the booster pump 2 in the upper deck area is laid to the top of the superstructure and is connected to an electric valve 6 and the upper top sprinkler group 4.

[0037] In the present invention, when two sets of fire extinguishing water systems are in operation, only one ballast pump needs to be turned on to meet the water demand. Here, the two ballast pumps only serve as backup for each other. In the boosting fire extinguishing system, there is no need to turn on the two ballast pumps at the same time, and the same is true for the configuration of the two boosting pumps.

[0038] In this way, sprinklers and corresponding electric valves are arranged on the top of the cabin shed and the top of the superstructure. The electric valves here are specially designed to realize the on-off supply of water for fire extinguishing by sprinklers. Once the electric valve is activated, the corresponding sprinkler starts to spray water, so that the ballast water with increased pressure is sprayed from the sprinkler to achieve long-distance and wide-range spraying, thereby realizing the fire extinguishing operation more comprehensively and conveniently.

[0039] The control units for the pressurized fire extinguishing system are arranged at three locations. The control unit at each location can independently implement the water spraying operation. The three locations are set to meet the design requirements of the fire extinguishing system on the ship. In the event of a fire, the control unit at any location can be controlled to implement the water spraying operation. The first control unit 10, the second control unit 11, and the third control unit 12 of the three-location pressurized fire extinguishing system are respectively referred to as the cab control unit, the engine room fire control station control unit, and the fire control station control unit, that is, the cab control unit is used as the first control unit 10, the engine room fire control station control unit is used as the second control unit 11, and the fire control station control unit is used as the third control unit 12.

[0040] Specifically, a first control box 13 is installed on-site at the booster pump 3 in the cabin deck area of ​​the main deck of the cabin shed to realize local control of the booster pump in the cabin shed, that is, the start and stop control of the booster pump 3 in the cabin deck area is realized through the first control box 13, thereby realizing the increase of the water pressure in one fire-fighting water pipeline 7. A second control box 14 is installed on-site at the booster pump 2 in the upper deck area of ​​the main deck layer of the superstructure to realize local control of the booster pump in the superstructure, that is, the start and stop control of the booster pump 2 in the upper deck area is realized through the second control box 14, thereby realizing the increase of the fire-fighting water pressure in another fire-fighting water pipeline 7. A third control box 15 is installed on-site at the ballast pump 1, and the start and stop operations of the two ballast pumps 1 can be realized through the third control box 15. The first control box 13, the second control box 14 and the third control box 15 are all connected to the control unit, and the control unit can realize the control of all control boxes.

[0041] Below we give an example to describe the specific piping design of the fire extinguishing water system. We describe the engine room shed fire extinguishing water system and the superstructure fire extinguishing water system separately. Their actual layout and working principles are the same. Figure 2 This is a schematic diagram of the principle of the engine room shed fire extinguishing water system. The principle of the superstructure fire extinguishing water system is also the same Figure 2 The layout of the fire extinguishing water system is the same.

[0042] exist Figure 2 In the fire extinguishing water system at the engine room shed shown, as a booster fire extinguishing system, it includes two engine room deck area booster pumps 3, namely booster pump No. 1 31 and booster pump No. 2 32. A ballast water pipeline is output on the nearest ballast water pipeline branch 81 as the starting position of the fire extinguishing water pipeline, and two branches are divided into two branches at the first T-type connection point 71. One branch is connected with the first electric valve 61, booster pump No. 1 31 and the third electric valve 63 and booster pump outlet check valve 91 in sequence. The other branch is also connected with the second electric valve 62, booster pump No. 2 32, fourth electric valve 64 and booster pump outlet check valve 92 in sequence. The two branches are combined at the second T-type connection point 72. The two branches are combined into one branch leading upward to the top of the engine room shed, and then divided into left and right branches at the third T-type connection point 73.

[0043] On the top of the cabin shed, the fire extinguishing water pipe route is divided into two routes from the third T-shaped connection point 73: the right route is divided into two routes in the forward and backward directions at the fourth T-shaped connection point 74, wherein the forward route is connected to the right front sprinkler 53 and the seventh electric valve 67 on the right side of the cabin shed; the backward route is connected to the right rear sprinkler 51 and the fifth electric valve 65 on the right side of the cabin shed.

[0044] The left one is divided into two forward and backward directions at the fifth T-shaped connection point 75, the forward one is connected to the left front sprinkler 54 on the left side of the cabin canopy and the eighth electric valve 68, and the backward one is connected to the left rear sprinkler 52 on the left side of the cabin canopy and the sixth electric valve 66. Through the above arrangement, the water spraying of the right rear sprinkler 51, the left rear sprinkler 52, the right front sprinkler 53, and the left front sprinkler 54 can be turned on and off by controlling the fifth electric valve 65, the sixth electric valve 66, the seventh electric valve 67, and the eighth electric valve 68.

[0045] For sprinklers, Figure 3 As shown. There are 8 sprinklers divided into two groups, which are arranged at the four corners of the highest level of the superstructure and the highest level of the engine room shed respectively. The two pairs of sprinkler nozzles in each group are facing the bow and stern of the ship respectively. Since the sprinkler is to spray the pressurized water to the front or rear to cover the entire deck of the container ship and the containers on the deck. Its pressure is relatively large, and the spray distance can theoretically reach 240 meters. Since there are sprinklers at the front and rear of the container ship, the entire container ship can be covered. In addition to the electric valve to control the start and stop of the sprinkler, the angle change can also be achieved manually. The fire water column sprayed by the sprinkler can be adjusted in the horizontal and vertical directions through its own nozzle, so that the fire water column covers the entire main deck area of ​​the container ship, which is more able to meet the needs of extinguishing the fire on the hull. Compared with the 51-meter fire water spray range of the prior art, the adaptability is greatly improved.

[0046] Example 2

[0047] In this embodiment, the pressurized fire extinguishing system extinguishes the fire in the container area on the container ship, and the specific use process is as follows:

[0048] S1, once a fire is found on the container ship, the fire point is in the main deck area, and the pressurized fire extinguishing system is started at any of the three control units. The two pressurized fire extinguishing systems can be started one or both at the same time as needed. When operating, the ballast pump is started first, and the ballast water system of the container ship itself is used to establish water supply pressure;

[0049] S2, opening the relevant valves and starting the booster pump, the relevant valves are the electric valves and electric hydraulic valves on the pipeline of the booster fire extinguishing system;

[0050] S3, operate the sprinklers to spray out the ballast water pumped to the sprinklers, and the water jets sprayed by the multiple sprinklers are all sprayed toward the fire;

[0051] S4, after the fire is extinguished, the relevant pump groups and relevant valves are reset, and the relevant pump groups are the ballast pump and the booster pump.

[0052] Example 3

[0053] The present embodiment is a container ship, which is provided with the above-mentioned pressurized fire extinguishing system. When a fire occurs, the ship's own ballast water system is used as a water source to carry out fire extinguishing covering the entire deck after secondary pressurization. The ballast water output by the ballast pump is pressurized again by a booster pump so that it can be sprayed out after being increased to a sufficient pressure, thereby realizing more options for fire extinguishing operations in addition to its own fire fighting system.

[0054] The present invention provides the above-mentioned pressurized fire extinguishing system on the container ship, and when a fire occurs, the original ballast water system is used for secondary pressurization before the fire extinguishing operation, which can make the fire extinguishing work more efficient and safe. It can be used for fire fighting in the deck area of ​​various large ships, and has the characteristics of wide coverage, high efficiency and safety.

[0055] Therefore, the pressurized fire extinguishing system of the present invention is an additional enhanced fire-fighting system on container ships, which makes up for the problems of insufficient spray range and slow fire-fighting response on the basis of the original fire-fighting system. It is an optional system on container ships, which further improves the fire-fighting range and fire-fighting efficiency, and has obvious cost control.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressurized fire extinguishing system for a container ship, wherein a ballast pump is provided in the engine room of the container ship, and the ballast water pipeline where the ballast pump is located is connected to the seawater tank and the ballast tank and the discharge pipe outboard of the ship, characterized in that: The pressurized fire extinguishing system includes a booster pump, an electric valve, a sprinkler, a control unit and a fire extinguishing water pipeline. One end of the fire extinguishing water pipeline is connected to the ballast water pipeline at the ballast pump, and the other end is connected to the sprinkler. A booster pump and an electric valve are also provided on the fire extinguishing water pipeline. The booster pump and the electric valve are both electrically connected to the control unit. One end of the fire extinguishing water pipeline is connected to the ballast water pipeline where the ballast pump is located so as to utilize the ballast water as the water source of the fire extinguishing system. The other end of the fire extinguishing water pipeline is connected to the sprinkler, which is arranged at the highest position on the container ship, which is the top of the cabin shed and the top of the superstructure. The booster pump and the electric valve are both electrically connected to the control unit to realize control operation.

2. A pressurized fire extinguishing system for container ships according to claim 1, characterized in that: Two ballast pumps are arranged in the engine room, an engine room shed is arranged on the upper part of the engine room of the container ship, and a superstructure is arranged in the middle part of the container ship. The engine room shed and the top of the superstructure each correspond to one set of the pressurized fire extinguishing system. The two pressurized fire extinguishing systems are respectively connected to the same ballast water pipeline nearby, so the whole container ship has two sets of fire extinguishing water pipelines, each set of fire extinguishing water pipelines is provided with a booster pump, an electric valve and a sprinkler, one set of sprinklers is arranged at the top of the engine room shed, and the other set of sprinklers is arranged at the top of the superstructure.

3. A pressurized fire extinguishing system for container ships according to claim 1, characterized in that: The ballast pump is arranged at the bottom layer of the engine room, and the total pressure head of the ballast pump is higher than the highest liquid level of the ballast tank and at least not lower than the height of the main deck.

4. A pressurized fire extinguishing system for container ships according to claim 1, characterized in that: The number of boosting pumps is 4 in two groups. Two boosting pumps are installed in the main deck area of ​​the engine room shed. Both boosting pumps are connected to the same ballast water pipeline nearby through pipelines. Two boosting pumps are installed in the main deck area of ​​the superstructure. Both boosting pumps are also connected to the same ballast water pipeline connected to the engine room shed boosting pumps through pipelines.

5. A pressurized fire extinguishing system for container ships according to claim 4, characterized in that: The fire-fighting water system at the engine room shed includes two booster pumps arranged in the main deck area of ​​the engine room shed, namely booster pump No. 1 and booster pump No.

2. A ballast water pipeline is output on the ballast water main pipeline as the starting position of the fire-fighting water pipeline, and two branches are divided into two branches in the form of a first T-type connection point. One branch is connected to the first electric valve, booster pump No. 1 and the third electric valve and the second check valve in sequence, and the other branch is also connected to the second electric valve, booster pump No. 2, the fourth electric valve and the third check valve in sequence. The two branches are combined at the second T-type connection point, and the two branches are combined into one branch leading upward to the top of the engine room shed.

6. A pressurized fire extinguishing system for container ships according to claim 1, characterized in that: There are two groups of water sprinklers, each group has 4 sprinklers, and each group is arranged on the highest level of the superstructure and the highest level of the engine room shed respectively. The nozzles of two water sprinklers in each group are facing the bow direction, and the nozzles of the other two water sprinklers are facing the stern direction. The two water sprinklers in the same direction are arranged on the left and right sides respectively.

7. A pressurized fire extinguishing system for container ships according to claim 6, characterized in that: The fire water column sprayed by the sprinkler can cover the entire main deck area of ​​the container ship by adjusting the nozzle angle in the horizontal direction and the vertical direction.

8. A pressurized fire extinguishing system for container ships according to claim 1, characterized in that: The control units are arranged at three locations, namely the cab control unit, the cabin fire control station control unit and the fire control station control unit located at the superstructure. The control unit at each location can independently implement water spraying fire extinguishing operations. In the event of a fire, the control unit at any location can be controlled to implement fire extinguishing water spraying.

9. A pressurized fire extinguishing system for container ships according to claim 1, characterized in that: The electric valve member comprises an electric valve and an electric hydraulic valve, and the electric hydraulic valve is arranged on the main ballast water pipeline.

10. A container ship, characterized in that: The container ship is provided with a pressurized fire extinguishing system as claimed in any one of claims 1 to 9, which uses the ship's own ballast water as a water source to extinguish the fire covering the entire deck after secondary pressurization when a fire occurs.

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