A deck integrated fire protection system

Abstract

This application relates to the field of fire protection equipment technology, and in particular to an integrated deck fire protection system, including a nitrogen cylinder group, a fresh water tank, a deluge valve, and a control valve. At least two nitrogen cylinder groups are provided. The outlet of one nitrogen cylinder group is connected to the top inlet of the fresh water tank via a first pipeline to drive the fresh water supply. The outlet of the other nitrogen cylinder group is connected to the control chamber interface of the deluge valve via a second pipeline to control the opening and closing of the deluge valve. The outlet of the fresh water tank is connected to the inlet of the deluge valve via a third pipeline. The control valve is located on the first pipeline at the outlet of the nitrogen cylinder group to control the opening of the nitrogen cylinder group. A pressure relief valve is provided on the pipeline between the outlet of the nitrogen cylinder group and the control valve. This application has the advantages of improving equipment integration, reducing equipment costs, and avoiding high-pressure fluctuations during inflation.

Description

Technical Field

[0001] This application relates to the field of fire protection equipment technology, and in particular to an integrated deck fire protection system. Background Technology

[0002] In the field of fire protection technology, with the continuous improvement of fire safety requirements, the development of fire protection systems has received increasing attention. Fire protection systems play a crucial role in protecting people's lives and property, especially in special locations such as helicopter decks, where efficient and reliable systems are indispensable. A good fire protection system can respond quickly in the event of a fire, effectively control the spread of fire, buy valuable time for firefighting and rescue operations, and reduce the losses caused by the fire.

[0003] In traditional fire protection systems, various technologies are employed to achieve fire extinguishing capabilities. For power sources, some systems use fire pumps, which require regular inspection and maintenance to ensure proper operation. Regarding extinguishing agent activation, specialized small starting gas cylinders are commonly used to operate the equipment; while this achieves the desired activation function, the equipment is expensive. For pressure control, in nitrogen cylinder systems, pressure relief valves or safety valves are typically installed after the cylinder head valve, primarily focusing on pressure control under normal operating conditions, while offering relatively insufficient protection for the nitrogen cylinders during filling.

[0004] Therefore, the integration between devices is low and the devices are distributed relatively far apart. When filling nitrogen cylinders, there is a lack of effective protection measures, which can easily lead to high pressure fluctuations, potentially causing damage or leakage to nitrogen cylinders and cylinder valves, thus affecting the safety and stability of the system. Utility Model Content

[0005] To improve equipment integration, reduce equipment costs, and avoid high-pressure fluctuations during inflation, this application aims to provide an integrated deck fire suppression system. The technical solution adopted is as follows: Includes nitrogen cylinder assembly, fresh water tank, deluge valve, and control valve; The nitrogen cylinder group is provided in at least two sets. The outlet of one set of nitrogen cylinders is connected to the top air inlet of the fresh water tank through a first pipeline for driving fresh water. The outlet of the other set of nitrogen cylinders is connected to the control chamber interface of the deluge valve through a second pipeline for controlling the opening and closing of the deluge valve. The outlet of the fresh water tank is connected to the inlet of the deluge valve through a third pipeline. The control valve is installed on the first pipeline at the outlet of the nitrogen cylinder group and is used to control the opening of the nitrogen cylinder group; a pressure relief valve is provided on the pipeline between the outlet of the nitrogen cylinder group and the control valve.

[0006] By adopting the above technical solution, the nitrogen cylinder group is simultaneously connected to the freshwater tank and the deluge valve control chamber, and a control valve is set up for nitrogen distribution, achieving unified power supply and flexible switching of the system. Nitrogen can serve as both a pressure source to drive the freshwater and a signal medium to control the opening and closing of the deluge valve, thereby simplifying the system structure, reducing the use of independent power components, and improving the system's integration and reliability. Furthermore, the pressure relief valve installed on the nitrogen outlet pipeline effectively avoids high-pressure fluctuations during inflation, ensuring the safety of system operation, and is particularly suitable for applications with limited space and complex environments, such as ship decks.

[0007] Optionally, it also includes a foam proportioning mixing device and a concealed nozzle. The outlet of the deluge valve is connected to the inlet of the foam proportioning mixing device via a fourth pipe, and the outlet of the foam proportioning mixing device is connected to the concealed nozzle via a fifth pipe.

[0008] By adopting the above technical solution, the system can not only spray fresh water, but also mix foam liquid in a specified ratio using a foam proportioning device and deliver it to concealed nozzles to achieve comprehensive foam fire suppression, which is particularly suitable for extinguishing oil fires in deck areas. The concealed nozzle design avoids the impact of exposed components on deck operations, improves the cleanliness and safety of the deck space, and features a compact overall structure with multiple functions, enhancing the system's ability to cope with various fire situations.

[0009] Optionally, the nitrogen cylinder group consists of at least two nitrogen cylinders connected in parallel, and each nitrogen cylinder outlet is equipped with a pilot valve. The pilot valves are connected in series through pipelines, so that opening one pilot valve can trigger the opening of subsequent pilot valves.

[0010] By adopting the above technical solution, once the pilot valve of the first nitrogen cylinder is opened, the valves of subsequent cylinders can be automatically triggered, ensuring a continuous and stable nitrogen supply and preventing system interruption due to insufficient gas in a single cylinder. This linkage design improves the reliability and efficiency of gas release, making it particularly suitable for situations requiring a large and continuous gas supply in emergency fires, while also reducing manual intervention and enhancing the system's automated response capabilities.

[0011] Optionally, the deluge valve is a solenoid valve, which automatically opens when power is off to connect the foam proportioning device and the concealed nozzle.

[0012] By adopting the above technical solution, in the event of a power outage due to a fire, the solenoid valve can automatically switch to the open state, ensuring unobstructed fire-fighting pipelines and avoiding the risk of the system failing to start due to circuit failure. This "fail-safe" design meets the reliability requirements of fire protection systems, ensuring that the system can still act promptly and carry out fire suppression under extreme conditions.

[0013] Optionally, the foam proportioning device is a pipeline proportioner, with its input end connected to the output end of the deluge valve and its output end connected to the liquid inlet of the concealed nozzle.

[0014] By adopting the above technical solution, the inline proportioning mixer has a simple structure, requires no external power, and can automatically mix foam liquid according to proportions based on fluid pressure, ensuring stable mixing accuracy. This device is directly connected between the deluge valve and the nozzle, reducing intermediate steps, lowering system resistance, and improving the delivery efficiency of the extinguishing agent. It is also easy to install and maintain, making it suitable for integration into limited deck spaces.

[0015] Optionally, the nitrogen cylinder group includes a main nitrogen cylinder group and a backup nitrogen cylinder group, wherein the main nitrogen cylinder group and the backup nitrogen cylinder group are connected in parallel via a switching valve.

[0016] By adopting the above technical solution, when the pressure of the main nitrogen cylinder group is insufficient or a malfunction occurs, the backup cylinder group can be quickly activated via a switching valve to ensure uninterrupted nitrogen supply, thereby guaranteeing the continuous operation of the fire protection system. This dual-backup design is particularly suitable for ship environments involving long-term voyages or those far from resupply, improving the system's availability and safety during critical periods.

[0017] Optionally, the top end face of the concealed nozzle is flush with the deck surface, and its protrusion from the deck surface does not exceed 5 mm.

[0018] By adopting the above technical solution, the nozzles are concealed below the deck surface when not in operation, avoiding obstruction of personnel passage, cargo handling, and deck machinery operation, and reducing the risk of damage due to collisions. The low-profile design also helps maintain a flat deck, complies with ship deck operation regulations, and can be quickly deployed upon activation without affecting firefighting functionality.

[0019] Optionally, the concealed nozzles are distributed in a matrix along the deck surface, and the distance between adjacent nozzles does not exceed 1.5 meters.

[0020] By adopting the above technical solution and evenly distributing the nozzles, it is possible to ensure comprehensive coverage of the deck area without any blind spots. In the event of a fire, a uniform extinguishing agent spray network can be quickly formed, effectively suppressing the spread of fire. The reasonable spacing design balances fire extinguishing efficiency and economy, avoiding waste caused by excessively dense nozzles or protective gaps left by excessively sparse nozzles, thus improving the overall fire extinguishing effectiveness and reliability of the system.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By simultaneously connecting the nitrogen cylinder group to both the freshwater tank and the deluge valve control chamber, and installing a control valve for nitrogen distribution, a unified power supply and flexible switching of the system are achieved. Nitrogen can serve as both a pressure source to drive the freshwater supply and a signal medium to control the opening and closing of the deluge valve, thereby simplifying the system structure, reducing the use of independent power components, and improving the system's integration and reliability. Furthermore, the installation of a pressure relief valve on the nitrogen outlet pipeline effectively prevents high-pressure fluctuations during inflation, ensuring the safety of system operation, and is particularly suitable for applications with limited space and complex environments, such as ship decks. 2. The system integrates a foam proportioning device, giving it both water and foam extinguishing capabilities, effectively addressing various types of fires on deck. The deluge valve uses a solenoid valve design that automatically opens upon power failure, complying with the "fail-safe" principle of fire protection systems. This ensures automatic and reliable system startup in emergencies such as power outages, improving the automation level of emergency response. 3. The sprinklers feature a concealed pop-up design flush with the deck, greatly reducing obstruction to normal deck operations and lowering the risk of damage from collisions. The sprinklers are distributed in a matrix pattern with a spacing of no more than 1.5 meters, forming a uniform, seamless network of extinguishing agent coverage. This allows for rapid and effective suppression and extinguishing of fires, maximizing the overall protective effectiveness of the system. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall deck integrated fire protection system; In the picture, 1. Nitrogen cylinder assembly; 2. Fresh water tank; 3. Deluge valve; 4. Control valve; 5. Pressure relief valve; 6. Foam proportioning and mixing device; 7. Concealed nozzle. 8. Pipeline, 81. First pipeline, 82. Second pipeline, 83. Third pipeline, 84. Fourth pipeline, 85. Fifth pipeline. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 This application will be described in further detail below.

[0024] A deck-integrated fire protection system, referring to Figure 1The system includes a nitrogen cylinder assembly 1, a freshwater tank 2, a deluge valve 3, a control valve 4, a foam proportioning device 6, and a concealed nozzle 7. The nitrogen cylinder assembly 1 has at least two sets. One set's outlet is connected to the top inlet of the freshwater tank 2 via a first pipe 81, enabling the dispensing of freshwater. The other set's outlet is connected to the control chamber interface of the deluge valve 3 via a second pipe 82, controlling the opening and closing of the deluge valve 3. The freshwater tank 2's outlet is connected to the inlet of the deluge valve 3 via a third pipe 83. The control valve 4 is located at... The outlet pipe 8 of the nitrogen cylinder group 1 is used to control the opening of the nitrogen cylinder group 1; a pressure relief valve 5 is provided on the pipe 8 between the outlet of the nitrogen cylinder group 1 and the control valve 4; the outlet of the deluge valve 3 is connected to the inlet of the foam proportioning device 6 through the fourth pipe 84, and the outlet of the foam proportioning device 6 is connected to the concealed sprinkler head 7 through the fifth pipe 85. This connection method enables the various parts of the system to work together, realize the driving of fire water, the control of the deluge valve 3, and the mixing and spraying of foam, and improve the integration and reliability of the fire protection system.

[0025] Furthermore, multiple nitrogen cylinder groups 1 connected to the top air inlet of the freshwater tank 2 can be provided. One nitrogen cylinder group 1 is used first, and the remaining nitrogen cylinder groups 1 are in reserve. When the previous nitrogen cylinder group 1 is used up, it can be replaced with a backup nitrogen cylinder group 1 to continue use. The nitrogen cylinder group 1 consists of at least two nitrogen cylinders connected in parallel. Each nitrogen cylinder outlet is equipped with a pilot valve, and the pilot valves are connected in series through pipeline 8. The nitrogen cylinders are generally cylindrical and made of high-strength alloy steel to withstand the pressure of high-pressure nitrogen. The pilot valve can be an electromagnetic pilot valve, which is characterized by using electromagnetic force to control the opening and closing of valve 4. When one pilot valve opens, high-pressure nitrogen will trigger the opening of subsequent pilot valves through the series pipeline 8. The pilot valve here can also be replaced with a pneumatic pilot valve, which uses gas pressure to control the action of valve 4. The combination logic of multiple nitrogen cylinders connected in parallel and pilot valves connected in series enables the system to quickly release a large amount of nitrogen during startup, providing sufficient power for driving the fire-fighting water and controlling the deluge valve 3. This combined effect is achieved because the parallel nitrogen cylinders increase the nitrogen storage capacity, while the series pilot valves enable rapid interlocking opening, improving the system's response speed.

[0026] Optionally, the nitrogen cylinder group 1 can also be connected as follows: nitrogen cylinder group 1 includes a main nitrogen cylinder group 1 and a standby nitrogen cylinder group 1, which are connected in parallel via a switching valve. The structure of the main nitrogen cylinder group 1 and the standby nitrogen cylinder group 1 is the same as that of the nitrogen cylinder group 1 described above, consisting of at least two nitrogen cylinders connected in parallel, with each nitrogen cylinder outlet equipped with a pilot valve arranged in series. The switching valve is generally a three-way valve, the valve body of which can be made of stainless steel, and the valve core can be a ball valve core. Through the switching valve, when the main nitrogen cylinder group 1 fails or is insufficient in nitrogen, the system can be quickly switched to the standby nitrogen cylinder group 1, ensuring continuous operation.

[0027] This design of the primary and backup nitrogen cylinder group 1 improves the reliability and stability of the system. When the primary nitrogen cylinder group 1 is working normally, the system operates according to the normal process; when the primary nitrogen cylinder group 1 malfunctions, the backup nitrogen cylinder group 1 is quickly activated through the switching valve to ensure that the fire protection system can continue to function and safeguard fire safety.

[0028] Furthermore, the freshwater tank 2 is typically a sealed tank made of corrosion-resistant stainless steel to prevent water corrosion. The tank has a top air inlet and a water outlet. The top air inlet connects to the first pipeline 81, allowing nitrogen gas to enter the tank and drive the water. The water outlet connects to the third pipeline 83, delivering the water from the tank to the deluge valve 3. Alternatively, the freshwater tank 2 can be made of fiberglass reinforced plastic, which is lightweight and corrosion-resistant. After nitrogen gas enters the freshwater tank 2, it creates pressure inside, forcing water out of the outlet, thus enabling the use of nitrogen to drive the fire-fighting water.

[0029] Furthermore, the deluge valve 3 is a solenoid valve, which automatically opens when power is off to connect the foam proportioning device 6 and the concealed sprinkler head 7. The valve body of the deluge valve 3 is generally made of cast iron or cast steel, providing good strength and sealing performance. The solenoid valve consists of a solenoid coil and a valve core. When the solenoid coil is energized, the valve core is in the closed position, and the deluge valve 3 is closed; when the solenoid coil is de-energized, the valve core opens under the action of spring force, and the deluge valve 3 opens. The deluge valve 3 can also be an electric deluge valve 3, with the valve core opened and closed by a motor. This design of the deluge valve 3 allows the system to open quickly in emergencies, ensuring that fire-fighting water can be delivered to the foam proportioning device 6 in a timely manner.

[0030] Furthermore, control valve 4 is generally a multi-way valve, characterized by multiple channels and a valve core. The flow direction of nitrogen is switched or distributed by the movement of the valve core. The valve body of control valve 4 can be made of copper alloy, which has good corrosion resistance and sealing performance. The valve core can be a ball valve core or a conical valve core; channel switching is achieved by rotating or moving the valve core. Control valve 4 can also be an electrically controlled valve, with the valve core's movement driven by a motor. The function of control valve 4 is to rationally distribute nitrogen to the first pipeline 81 and the second pipeline 82 according to system requirements, ensuring the normal operation of all parts of the system.

[0031] Furthermore, the foam proportioning device 6 is a line-type proportioner, with its input end connected to the output end of the deluge valve 3 and its output end connected to the inlet of the concealed nozzle 7. A line-type proportioner generally consists of a mixing chamber, nozzles, and a regulating valve. The mixing chamber is typically a cylindrical cavity where fire-fighting water and foam concentrate are mixed. The nozzles are used to spray the foam concentrate into the mixing chamber, and the regulating valve is used to adjust the flow rate of the foam concentrate to achieve a predetermined mixing ratio between the foam concentrate and the fire-fighting water. Alternatively, the foam proportioning device 6 can be a ring pump-type proportioner, which works by using the pressure of a water pump to draw in the foam concentrate and mix it with the fire-fighting water. The line-type proportioner can quickly mix the foam concentrate and fire-fighting water as the water flows through, providing a suitable foam mixture for subsequent fire-fighting operations.

[0032] Furthermore, the top face of the concealed sprinkler head 7 is flush with the deck surface, and its protrusion from the deck surface does not exceed 5 mm. The sprinkler head is typically circular and consists of a sprinkler body and a nozzle. The sprinkler body is generally made of aluminum alloy, which is lightweight and corrosion-resistant. The nozzle can be a multi-hole nozzle, capable of evenly spraying the foam mixture onto the protected area. The concealed sprinkler head 7 can also be a square sprinkler head, with its spray range and effect adjusted according to actual needs. The concealed sprinkler heads 7 are distributed in a matrix along the deck surface, with the spacing between adjacent sprinklers not exceeding 1.5 meters. This distribution ensures that the foam mixture evenly covers the deck, improving the fire extinguishing effect.

[0033] The implementation principle of this application embodiment is as follows: This deck integrated fire protection system uses nitrogen cylinder group 1 as a power source, avoiding the use of a separate starting gas cylinder and saving costs. A pressure relief valve 5 is installed at the outlet of nitrogen cylinder group 1 to effectively prevent high-pressure fluctuations during filling, protecting the nitrogen cylinder and cylinder head valve. Using nitrogen to drive fire-fighting water fully utilizes the properties that nitrogen and water are insoluble and do not react, eliminating the need for regular inspections like fire pumps, making it more suitable for unmanned platforms. Simultaneously, the system highly integrates the power source, water tank, control valve 4, foam proportioning device 6, etc., with matched parameters and complete control logic, effectively utilizing space and reducing the footprint, offering significant advantages in space-constrained locations such as offshore platforms.

[0034] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A deck-integrated fire suppression system, characterized by, Includes a nitrogen cylinder assembly (1), a fresh water tank (2), a deluge valve (3), and a control valve (4); The nitrogen cylinder group (1) is provided in at least two sets. The outlet of one set of the nitrogen cylinder group (1) is connected to the top air inlet of the fresh water tank (2) through the first pipeline (81) for driving fresh water. The outlet of the other set of the nitrogen cylinder group (1) is connected to the control chamber interface of the deluge valve (3) through the second pipeline (82) for controlling the opening and closing of the deluge valve (3). The outlet of the fresh water tank (2) is connected to the inlet of the deluge valve (3) through the third pipeline (83). The control valve (4) is installed on the first pipeline (81) of the outlet of the nitrogen cylinder group (1) and is used to control the opening of the nitrogen cylinder group (1); a pressure relief valve (5) is provided on the pipeline (8) between the outlet of the nitrogen cylinder group (1) and the control valve (4).

2. A deck-integrated fire suppression system according to claim 1, wherein, It also includes a foam proportioning mixing device (6) and a concealed nozzle (7). The outlet of the deluge valve (3) is connected to the inlet of the foam proportioning mixing device (6) through a fourth pipe (84), and the outlet of the foam proportioning mixing device (6) is connected to the concealed nozzle (7) through a fifth pipe (85).

3. A deck-integrated fire suppression system according to claim 2, wherein, The nitrogen cylinder group (1) consists of at least two nitrogen cylinders connected in parallel. Each nitrogen cylinder has a pilot valve at its outlet, and the pilot valves are connected in series through pipelines (8) so that opening one pilot valve can trigger the opening of subsequent pilot valves.

4. The deck integrated fire protection system according to claim 3, characterized in that, The rain valve (3) is a solenoid valve, which automatically opens when the power is off to connect the foam proportioning device (6) and the concealed nozzle (7).

5. The deck integrated fire protection system according to claim 4, characterized in that, The foam proportioning mixing device (6) is a pipeline proportioning mixer, whose input end is connected to the output end of the deluge valve (3) and whose output end is connected to the liquid inlet of the concealed nozzle (7).

6. The deck integrated fire protection system according to claim 1, characterized in that, The nitrogen cylinder group (1) includes a main nitrogen cylinder group (1) and a backup nitrogen cylinder group (1), which are connected in parallel via a switching valve.

7. The deck integrated fire protection system according to claim 2, characterized in that, The top end face of the concealed nozzle (7) is flush with the deck surface, and its protrusion from the deck surface does not exceed 5 mm.

8. The deck integrated fire protection system according to claim 7, characterized in that, The concealed nozzles (7) are distributed in a matrix along the deck surface, and the distance between adjacent nozzles does not exceed 1.5 meters.

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