Wet type water mist fire extinguishing system and method giving consideration to ammonia absorption and ship

Abstract

The invention discloses a wet type water mist fire extinguishing system and method giving consideration to ammonia absorption and a ship. The system comprises a water supply pipeline assembly, an air control pipeline assembly, a water spraying assembly and a control assembly, the water supply pipeline assembly comprises a water supply main pipeline and a plurality of water supply branch pipelines, and the water supply branch pipelines are connected to a plurality of areas where ammonia fuel equipment is located respectively; the control air pipeline assembly comprises a plurality of release control valve boxes and control air pipelines communicating with the release control valve boxes in a one-to-one correspondence mode, and the multiple control air pipelines are connected into the multiple areas correspondingly. Each water spraying assembly comprises a pneumatic control release valve and an open water mist nozzle, and the pneumatic control release valve in each area is connected with the water supply branch pipeline and the air control pipeline in the corresponding area; the control assembly comprises an intelligent controller, and the intelligent controller is in communication connection with the release control valve box, and an ammonia detector and a smoke temperature composite detector which are arranged in the area. The problems that in the prior art, fire disasters or ammonia leakage cannot be treated in time, and quick response cannot be achieved are solved.

Description

Technical Field

[0001] The present application relates to the field of ship technology, and in particular to a wet water mist fire extinguishing system, method and ship taking into account ammonia absorption. Background Art

[0002] When ammonia fuel is used in ship internal combustion engines, there may be emergencies such as fire or system leakage, which may cause a large amount of toxic ammonia to accumulate in the relevant equipment room, posing a serious threat to personnel safety. In addition, according to classification society regulations, these rooms must be equipped with fixed fire extinguishing systems due to the high risk of fire. Whether it is to deal with ammonia leaks or extinguish fires, the system needs to be able to respond quickly. However, in actual layout, the room where ammonia fuel-related equipment is stored may be far away from the water mist pump unit, resulting in a long pipeline. In traditional water mist fire extinguishing systems, it takes a certain amount of time from pump start-up to the water mist system being put into operation in the room, which may lead to missing the best time to deal with it. Moreover, traditional water mist fire extinguishing systems are only designed for fire response and do not consider the treatment of ammonia leaks. In addition, the nozzles used in traditional wet fire extinguishing systems are equipped with thermal elements. Only when the temperature reaches a certain threshold, the thermal elements and sealing components will detach from the nozzle body and trigger the water mist system. This design cannot achieve active control of water mist release. When the system detects a fire or ammonia leak, the nozzle also requires an additional trigger mechanism to open, and untimely handling leads to danger. Summary of the invention

[0003] In view of this, the main purpose of this application is to provide a wet water mist fire extinguishing system, method and ship that take into account ammonia absorption, which is conducive to solving the problem that the existing technology on ships cannot handle fire or ammonia leakage in a timely manner and cannot respond quickly.

[0004] The present application provides a wet water mist fire extinguishing system taking into account ammonia absorption, which comprises:

[0005] A water supply pipeline assembly, comprising a water supply main pipeline and a plurality of water supply branch pipelines respectively connected to the water supply main pipeline, wherein the inlet end of the water supply main pipeline is connected to the fresh water tank, a stop valve, a water supply pump, a stop check valve and an electromagnetic control valve are sequentially arranged in the middle of the water supply main pipeline, the outlet end of the water supply main pipeline is connected to a water supply pressure regulating tank, the bottom of the water supply pressure regulating tank is respectively connected to a plurality of water supply branch pipelines, each of the water supply branch pipelines is provided with an electric control partition valve, and the plurality of water supply branch pipelines are respectively connected to a plurality of areas where the ammonia fuel equipment is located;

[0006] A control air pipeline assembly, comprising a plurality of release control valve boxes and control air pipelines connected to the release control valve boxes in a one-to-one correspondence, wherein the plurality of control air pipelines are respectively connected to the plurality of areas where the ammonia fuel equipment is located;

[0007] A water spray assembly, comprising a pneumatically controlled release valve and an open water mist nozzle correspondingly connected to the pneumatically controlled release valve, wherein the pneumatically controlled release valve in each of the areas is connected to the water supply pipe and the control air pipe in the area corresponding to it;

[0008] The control component includes an intelligent controller, which is communicatively connected with the water supply pump, the electromagnetic control valve, the electric control partition valve, the release control valve box, and the ammonia detector and the smoke and temperature composite detector arranged in each of the areas.

[0009] From the above, the intelligent controller, the release control valve box communicated with the intelligent controller, the control air pipeline corresponding to the release control valve box, the pneumatic control release valve connected to the control air pipeline, and the open water mist nozzle connected to the pneumatic control release valve constitute a closed automatic control rapid response system. The intelligent controller controls the release control valve box in a certain area, and then controls the opening and closing of the pneumatic control release valve in the area. Once the pneumatic control release valve is opened, the open water mist nozzle in the area immediately releases water mist under the action of the water supply pipe filled with water, and responds quickly. The integrated control scheme of combining the intelligent controller with the pneumatic control release valve and the release control valve box realizes automatic rapid response and precise control of the wet water mist fire extinguishing system.

[0010] Optionally, the multiple areas where the ammonia fuel equipment is located include at least one ammonia fuel preparation room.

[0011] From the above, for ammonia fuel ships, ammonia fuel-related equipment and related pipeline valves and accessories are mainly arranged in major places such as the ammonia fuel preparation room, ammonia fuel tank connection space and ammonia fuel filling station.

[0012] Optionally, multiple rows and columns of the water supply pipes and the control air pipes arranged parallel to the water supply pipes are arranged in the ammonia fuel preparation room, wherein multiple water spray assemblies are connected to each row and column of the water supply pipes and the control air pipes, and flanges are arranged at the ends of the multiple rows and columns of the water supply pipes.

[0013] As described above, the parallel arrangement of the water supply pipe and the control air pipe facilitates installation and maintenance, avoiding the complexity and potential failure points caused by pipe crossing; and multiple water spray components expand the water mist coverage.

[0014] Optionally, the volume of the water supply pressure stabilizing tank is determined according to the maximum water consumption required by the area that is farthest from the water supply pump.

[0015] From the above, the volume design of the water supply pressure regulating tank takes into account the needs of the farthest area and the maximum water consumption, which can effectively balance the pressure fluctuations in the water supply pipeline and reduce the water hammer effect.

[0016] Optionally, the release control valve box is provided with an air inlet and an air outlet, the air inlet is connected to external control air, and the air outlet is connected to the control air pipeline.

[0017] As described above, the release control valve box supplies external control air (i.e. compressed air) into the control air pipeline, thereby opening the pneumatic control release valve connected to the control air pipeline, and then the open water mist nozzles in the area release water mist immediately.

[0018] Optionally, an air supply valve, a pressure sensor and a pressure transmitter are provided on the top of the water supply pressure stabilizing tank.

[0019] As mentioned above, the air supply valve can not only adjust the pressure inside the water supply pressure regulating tank, but also prevent the formation of negative pressure inside the water supply pressure regulating tank, and can also discharge the residual air inside the water supply pressure regulating tank after system startup or maintenance. The pressure sensor and pressure transmitter can display the detected pressure of the water supply pressure regulating tank and transmit it to the intelligent controller, which determines whether the water supply pump works or not according to the pressure condition of the water supply pressure regulating tank.

[0020] Optionally, the inlet end of the water supply main pipeline is connected to the fresh water tank through a suction port.

[0021] From above, the suction port is in the shape of an inverted funnel, which can significantly increase the water absorption area, increase the water absorption amount, make the incoming water flow more evenly distributed, and improve the water absorption stability.

[0022] The present application provides a wet water mist fire extinguishing method taking into account ammonia absorption, which uses any of the above-mentioned wet water mist fire extinguishing systems taking into account ammonia absorption to extinguish fires and absorb ammonia in multiple areas where ammonia fuel equipment is located on a ship.

[0023] Optionally, ensure that the pressure value of the water supply pressure regulating tank is always above the set value, and at the same time, ensure that the water supply pipeline is full of water and its water pressure is greater than the working pressure of the open water mist nozzle;

[0024] According to the detection results in multiple areas where the ammonia fuel equipment is located, the intelligent controller controls the opening and closing of the solenoid valve inside the release control valve box, controls the opening and closing of the pneumatic control release valve, and then controls the open water mist nozzles in the corresponding areas to release water mist.

[0025] From the above, the intelligent controller's integrated control of the release control valve box, the pneumatic control release valve and the open water mist nozzle, as well as the intelligent controller's integrated control of the water pressure in the water supply pipeline, enables the system's rapid emergency response.

[0026] The present application provides a ship, comprising a hull and any one of the above-mentioned wet water mist fire extinguishing systems taking into account ammonia absorption and arranged on the hull.

[0027] In summary, the wet water mist fire extinguishing system, method and ship that take ammonia absorption into consideration are provided in the present application. The wet water mist fire extinguishing system can quickly respond to external emergencies and accurately control emergencies in different areas through the integrated control of the water supply pump, electromagnetic control valve, and water supply pressure regulating tank, which are a water supply pressure regulating module, and the integrated control of the release control valve box, pneumatic control release valve and open water mist nozzle, which are a water spray module, by an intelligent controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The various technical features of the present application and the relationship between them are further explained below with reference to the accompanying drawings. The accompanying drawings are exemplary, and some technical features are not shown in actual proportion. In addition, some drawings may omit technical features that are commonly used in the technical field to which the present application belongs and are not essential for understanding and implementing the present application, or additional technical features that are not essential for understanding and implementing the present application may be shown. In other words, the combination of the various technical features shown in the accompanying drawings is not used to limit the present application. In addition, throughout the present application, the same figure numbers refer to the same content. The specific description of the drawings is as follows:

[0029] Figure 1 It is a structural diagram of a wet water mist fire extinguishing system taking into account ammonia absorption in this application.

[0030] Description of Reference Numerals

[0031] 1-stop valve, 2-water supply pump, 3-stop check valve, 4-electromagnetic control valve, 5-water supply pressure regulating tank, 6-electrically controlled partition valve, 7-air supply valve, 8-water supply pipeline, 9-pneumatic control release valve, 10-open water mist nozzle, 11-flange, 12-ammonia detector, 13-smoke temperature composite detector, 14-intelligent controller, 15-first release control valve box, 16-second release control valve box, 17-third release control valve box, 18-control air pipeline, 19-suction port, 20-cable, 21-fresh water tank.

[0032] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present application are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present application can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present application.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0035] On July 7, 2023, at the 80th meeting of MEPC held by the International Maritime Organization (IMO), the IMO Ship Greenhouse Gas Emission Reduction Strategy was officially adopted in 2023, and it is planned to be revised every five years. Compared with the preliminary strategy in 2018, the 2023 emission reduction strategy has significantly advanced the greenhouse gas (GHG) emission reduction target, and set indicative verification points for 2030 and 2040: in 2030, the carbon emission intensity will be reduced by 40% compared with 2008, and the total greenhouse gas emissions will be reduced by at least 20%, and strive to reach 30%.

[0036] The application of zero / near-zero emission technologies, fuels and / or energy in international shipping will account for at least 5%, and strive to reach 10%. By 2040, the total greenhouse gas emissions will be reduced by at least 70% compared with 2008, and strive to reach 80%. By 2050, the greenhouse gas emissions from international shipping will peak as soon as possible, and considering the national conditions of different countries, strive to achieve net zero emissions in 2050 or thereabouts. The 2023 emission reduction strategy advances the time for net zero greenhouse gas emissions from "the end of the 21st century" to "around 2050". The global shipping greenhouse gas emission reduction strategy led by IMO continues to advance, and has identified short-, medium- and long-term alternative emission reduction measures and timetables, and has completed the formulation of short-term measures, including EEDI, EEXI, CII, SEEMP, etc.; medium-term measures mainly include implementation plans for the effective use of low-carbon fuels and new / innovative emission reduction mechanisms, etc., and have formulated fuel greenhouse gas intensity standards, carbon taxes, carbon trading, zero-carbon incentive mechanisms, and international maritime sustainable funds and incentive mechanisms. The medium-term measures clarify technical and economic elements and are planned to be passed in the second half of 2025 and officially take effect in 2027; long-term measures are expected to be implemented in 2030, aiming to seek the development and supply of zero-carbon or fossil-free fuels, encourage and promote the widespread adoption of potential innovative emission reduction mechanisms, etc. The promotion and popularization of low-carbon and zero-carbon fuels such as methanol, hydrogen, ammonia, and biofuels is one of the important ways to achieve zero-carbon transformation in the international shipping industry.

[0037] At present, LNG dual-fuel and methanol dual-fuel ships are relatively mature in the market, and the actual ships are in good operation, but there are no large commercial ships powered by zero-carbon fuel ammonia or hydrogen in operation. Major shipping companies have paid close attention to ammonia fuel ships and have made reservations: in 2023, Japan Oil Tanker announced that it would install ammonia fuel mixed combustion four-stroke engines on its tugboats, which can use up to 80% ammonia fuel. The project was delivered in June 2024; Belgian shipping company EXMARShip Management ordered the world's first ammonia fuel-powered 46,000m 3 Gas carrier, the project uses the first ammonia-fueled low-speed engine planned to be developed by Winterthur Gas & Diesel (WinGD), which will be delivered in 2026; Yara Clean Ammonia and North Sea Container Shipping Company have joined forces to build the world's first container ship fueled by pure ammonia. The project will be delivered in 2026. Compared with traditional fuel oil, the ship can reduce 11,000 tons of carbon dioxide emissions per year. With the implementation of the EU carbon tax bill, shipowners urgently need to optimize the fleet structure to solve the problem of limited carbon emission quotas, and the need for zero-carbon fuel ships is particularly urgent. Some shipowners have jointly developed ammonia fuel main engines with low-speed engine manufacturers, and invited shipyards to participate in depth to solve problems such as special system layout and safety protection of ammonia fuel, in order to develop ammonia fuel-powered ships as soon as possible.

[0038] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The specific embodiments described below can be combined with each other to form new embodiments. The same or similar ideas or processes described in one embodiment may not be repeated in other embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0039] The present application provides a wet water mist fire extinguishing system taking into account ammonia absorption, which comprises:

[0040] A water supply pipeline assembly, comprising a water supply main pipeline and a plurality of water supply branch pipelines respectively connected to the water supply main pipeline, wherein the inlet end of the water supply main pipeline is connected to the fresh water tank, a stop valve, a water supply pump, a stop check valve and an electromagnetic control valve are sequentially arranged in the middle of the water supply main pipeline, the outlet end of the water supply main pipeline is connected to a water supply pressure regulating tank, the bottom of the water supply pressure regulating tank is respectively connected to a plurality of water supply branch pipelines, each of the water supply branch pipelines is provided with an electric control partition valve, and the plurality of water supply branch pipelines are respectively connected to a plurality of areas where the ammonia fuel equipment is located;

[0041] A control air pipeline assembly, comprising a plurality of release control valve boxes and control air pipelines connected to the release control valve boxes in a one-to-one correspondence, wherein the plurality of control air pipelines are respectively connected to the plurality of areas where the ammonia fuel equipment is located;

[0042] A water spray assembly, comprising a pneumatically controlled release valve and an open water mist nozzle correspondingly connected to the pneumatically controlled release valve, wherein the pneumatically controlled release valve in each of the areas is connected to the water supply pipe and the control air pipe in the area corresponding to it;

[0043] The control component includes an intelligent controller, which is communicatively connected with the water supply pump, the electromagnetic control valve, the electric control partition valve, the release control valve box, and the ammonia detector and the smoke and temperature composite detector arranged in each of the areas.

[0044] Specifically, an intelligent controller, a release control valve box connected to the intelligent controller for communication, a control air duct corresponding to the release control valve box, a pneumatically controlled release valve connected to the control air duct, and an open water mist nozzle connected to the pneumatically controlled release valve constitute a closed automatic control rapid response system. The intelligent controller controls the release control valve box in a certain area, thereby controlling the opening and closing of the pneumatically controlled release valve in the area. Once the pneumatically controlled release valve is opened, the open water mist nozzle in the area immediately releases water mist under the action of the water supply pipe filled with water, and responds quickly. Through the integrated control scheme of combining the intelligent controller with the pneumatically controlled release valve and the release control valve box, the automatic rapid response and precise control of the wet water mist fire extinguishing system are realized.

[0045] Optionally, the multiple areas where the ammonia fuel equipment is located include at least one ammonia fuel preparation room.

[0046] Specifically, for ammonia fuel ships, ammonia fuel-related equipment and related pipeline valves and accessories are mainly arranged in major places such as the ammonia fuel preparation room, ammonia fuel tank connection space and ammonia fuel filling station.

[0047] Optionally, multiple rows and columns of the water supply pipes and the control air pipes arranged parallel to the water supply pipes are arranged in the ammonia fuel preparation room, wherein multiple water spray assemblies are connected to each row and column of the water supply pipes and the control air pipes, and flanges are arranged at the ends of the multiple rows and columns of the water supply pipes.

[0048] Specifically, the parallel arrangement of the water supply pipe and the control air pipe facilitates installation and maintenance, avoiding the complexity and potential failure points caused by pipe crossing; and multiple water spray assemblies can also expand the coverage.

[0049] Optionally, the volume of the water supply pressure stabilizing tank is determined according to the maximum water consumption required by the area that is farthest from the water supply pump.

[0050] Specifically, the volume design of the water supply surge tank takes into account the needs of the farthest area and the maximum water consumption, which can effectively balance the pressure fluctuations in the water supply pipeline and reduce the water hammer effect.

[0051] Optionally, the release control valve box is provided with an air inlet and an air outlet, the air inlet is connected to external control air, and the air outlet is connected to the control air pipeline.

[0052] Specifically, the release control valve box supplies external control air (i.e., compressed air) into the control air pipeline to open the pneumatic control release valve connected to the control air pipeline, so that the open water mist nozzles in the area release water mist immediately.

[0053] Optionally, an air supply valve, a pressure sensor and a pressure transmitter are provided on the top of the water supply pressure stabilizing tank.

[0054] Specifically, the air supply valve can not only adjust the pressure inside the water supply pressure regulating tank, but also prevent the formation of negative pressure inside the water supply pressure regulating tank, and can also discharge the residual air inside the water supply pressure regulating tank after system startup or maintenance. The pressure sensor and pressure transmitter can display the detected pressure of the water supply pressure regulating tank and transmit it to the intelligent controller, which determines whether the water supply pump works or not according to the pressure condition of the water supply pressure regulating tank.

[0055] Optionally, the inlet end of the water supply main pipeline is connected to the fresh water tank through a suction port.

[0056] Specifically, the suction port is in the shape of an inverted funnel, which can significantly increase the water absorption area, increase the water absorption amount, make the incoming water flow more evenly distributed, and improve the water absorption stability.

[0057] [Specific embodiment of a wet water mist fire extinguishing system taking into account ammonia absorption]

[0058] At the entrance end of the n areas where the ammonia fuel equipment is located, an nth release control valve box is provided, and the nth release control valve box is communicatively connected to the intelligent controller 14, wherein n is a natural number greater than 1, and the nth release control valve box is connected to the nth control air pipeline, and the nth control air pipeline enters the corresponding area where the ammonia fuel equipment is located. In addition, the nth control air pipeline corresponds to the nth water supply pipeline; the control air pipeline 18 includes the nth control air pipeline, and the water supply pipeline 8 includes the nth water supply pipeline.

[0059] Figure 1 This is a structural diagram of a specific embodiment of the wet water mist fire extinguishing system that takes ammonia absorption into consideration in the present application.

[0060] In one embodiment, the n areas where the ammonia fuel equipment is located include an ammonia fuel preparation room, room A (other specific area one involving the use of ammonia fuel) and room B (other specific area two involving the use of ammonia fuel), and a first release control valve box 15 is arranged at the entrance of the ammonia fuel preparation room, and the air inlet of the first release control valve box 15 is externally connected to the control air (also called compressed air), and the air outlet of the first release control valve box 15 is connected to the first control air duct. After the first control air duct enters the ammonia fuel preparation room, two rows and two columns are arranged, wherein two columns of control air ducts are arranged on both sides of the ammonia fuel preparation room, and two rows of control air ducts 18 are arranged in the middle of the ammonia fuel preparation room, and a control air branch duct is arranged at equal intervals on each row and column of the control air ducts 18, and the control air branch duct is connected to the air inlet at the middle position of the pneumatic control release valve 9.

[0061] A second release control valve box 16 is provided at the entrance end of room A, and a third release control valve box 17 is provided at the entrance end of room B. The air inlet of the second release control valve box 16 and the air inlet of the third release control valve box 17 are respectively connected to external control air (compressed air), the air outlet of the second release control valve box 16 is connected to the second control air duct, and the air outlet of the third release control valve box 17 is connected to the third control air duct. After the second control air duct enters room A and the third control air duct enters room B, due to the small size of room A and room B, the second control air duct is only connected to one group of water spray components, and the third control air duct is also only connected to one group of water spray components. One group of water spray components includes a pneumatic control release valve 9 and an open water mist nozzle 10.

[0062] In this embodiment, in the ammonia fuel preparation room, the water supply pipe 8 is arranged in two rows and two columns in parallel with the first control air pipe, and branch manifolds are arranged at equal intervals on the water supply pipes 8 in each row and column, connected to the water inlet at the top position of the pneumatic control release valve 9, and the bottom position of the pneumatic control release valve 9 is connected to the open water mist nozzle 10, which is open in the unactivated state and does not need to rely on heat sensitive components, which means that when the system is started, water mist can be sprayed immediately, and the response speed is fast; because the open water mist nozzle 10 is always in an open state, when the system detects a fire or ammonia leakage, the intelligent controller 14 will immediately start the water supply pump 2 and the pneumatic control release valve 9, and the water mist will be sprayed in a very short time to quickly cover the fire source or absorb ammonia. The pneumatic control release valve 9 is made of high temperature resistant and corrosion resistant materials, making the system components more reliable.

[0063] In this embodiment, an ammonia detector 12 and a smoke temperature composite detector 13 are respectively provided in the ammonia fuel preparation room, room A and room B, and all are communicatively connected to the intelligent controller 14 via a cable 20; and the first release control valve box 15, the second release control valve box 16 and the third release control valve box 17 are also communicatively connected to the intelligent controller 14 via a cable 20, and the intelligent controller 14 controls the opening and closing of the internal solenoid valves of the first release control valve box 15, the second release control valve box 16 and the third release control valve box 17. The solenoid valve controls the opening and closing of the pneumatic control release valve 9 by controlling whether compressed air (also called control air) is supplied, thereby controlling whether the open water mist nozzle 10 in the area releases water mist.

[0064] In this embodiment, the inlet end of the water supply main pipeline is connected with the fresh water tank 21 through the suction port 19, and a stop valve 1, a water supply pump 2, a stop check valve 3 and an electromagnetic control valve 4 are arranged in sequence in the middle of the water supply main pipeline, and the outlet end of the water supply main pipeline is connected with the water supply pressure regulating tank 5, and the outlet end of the water supply main pipeline extends from the upper outer wall of the water supply pressure regulating tank 5 into the inner bottom end of the water supply pressure regulating tank 5, and the bottom of the water supply pressure regulating tank 5 is respectively connected with three water supply branch lines 8, among which the three water supply branch lines 8 are branched through a pipeline extending from the bottom of the water supply pressure regulating tank 5, and each water supply branch line 8 is provided with an electric control partition valve 6, and the three water supply branch lines 8 are respectively connected to the fuel preparation room, room A and room B.

[0065] In this embodiment, the volume of the water supply pressure stabilizing tank 5 is determined based on a comprehensive calculation of the area farthest from the water supply pump 2 and the room with the maximum water consumption of the water mist system. The water supply pressure stabilizing tank 5 is pre-filled with a certain amount of compressed air. The three water supply pipes from the water supply pressure stabilizing tank 5 to the pneumatic control release valve 9 in each area are filled with water and maintain a certain pressure, which is higher than the working pressure of the open water mist nozzle 10.

[0066] The present application provides a wet water mist fire extinguishing method taking into account ammonia absorption, which uses any of the above-mentioned wet water mist fire extinguishing systems taking into account ammonia absorption to extinguish fires and absorb ammonia in multiple areas where ammonia fuel equipment is located on a ship.

[0067] Optionally, ensure that the pressure value of the water supply pressure regulating tank 5 is always above the set value, and at the same time, ensure that the water supply pipeline is full of water and its water pressure is greater than the working pressure of the open water mist nozzle;

[0068] According to the detection results in multiple areas where the ammonia fuel equipment is located, the intelligent controller controls the opening and closing of the solenoid valve inside the release control valve box, controls the opening and closing of the pneumatic control release valve, and then controls the open water mist nozzles in the corresponding areas to release water mist.

[0069] Specifically, the intelligent controller's integrated control of the release control valve box, the pneumatic control release valve and the open water mist nozzle, as well as the intelligent controller's integrated control of the water pressure in the water supply pipeline, enables the system's rapid emergency response.

[0070] According to the detection results of the ammonia detector 12 and the smoke and temperature composite detector 13 in the ammonia fuel preparation room, room A and room B, the intelligent controller 14 automatically controls the rapid release of water mist in the corresponding area through the first release control valve box 15, the second release control valve box 16 and the third release control valve box 17. In the early stage of water mist release, the water supply pressure regulating tank 5 ensures that the water pressure in the water supply pipe meets the water mist working requirements. When the pressure in the water supply pressure regulating tank 5 is lower than the set value, the intelligent controller 14 controls the water supply pump 2 to work to ensure the water pressure in the water supply pipe. The intelligent controller 14 determines the system working mode according to the regional accident status (fire or ammonia leakage), and controls the water mist working state according to the detection results of the ammonia detector 12 and the smoke and temperature composite detector 13 to meet the requirements of fire extinguishing or ammonia leakage absorption. When a fire occurs, the system can judge the fire situation in the area according to the real-time feedback signal of the smoke and temperature composite detector 13, and automatically control the working state of the water mist. When ammonia leakage occurs, the system can monitor the ammonia concentration in the area in real time according to the ammonia detector 12 and automatically control the working state of the water mist.

[0071] In the above embodiment, ammonia detectors 12 and smoke and temperature composite detectors 13 are arranged in different areas according to the size of the room, and the relevant detection signals are sent to the intelligent controller 14 after being analyzed and judged by the combustible gas detection module and the fire detection module. The combustible gas detection module and the fire detection module can also be integrated in the intelligent controller 14. The intelligent controller 14 controls the first release control valve box 15, the second release control valve box 16 and the third release control valve box 17 to open the pneumatic control release valve 9 according to the detection and analysis results in the ammonia fuel preparation room, room A and room B, so that the relevant open water mist nozzle 10 works.

[0072] The present application provides a ship, comprising a hull and any one of the above-mentioned wet water mist fire extinguishing systems taking into account ammonia absorption and arranged on the hull.

[0073] The wet water mist fire extinguishing system on the ship can not only take into account the functions of fire extinguishing and ammonia leakage absorption, but also respond quickly and autonomously control the working status of the system, and its reliability is high.

[0074] In summary, the wet water mist fire extinguishing system, method and ship that take ammonia absorption into consideration are provided in the present application. The wet water mist fire extinguishing system can quickly respond to external emergencies and accurately control emergencies in different areas through the integrated control of the water supply pump, electromagnetic control valve, and water supply pressure regulating tank, which are a water supply pressure regulating module, and the integrated control of the release control valve box, pneumatic control release valve and open water mist nozzle, which are a water spray module, by an intelligent controller.

[0075] Unless otherwise defined, all technical and scientific terms used in this application are the same as those generally understood by those skilled in the art to which this application belongs. If there is any inconsistency, the meaning described in the full text of this application or the meaning derived from the content recorded in the full text of this application shall prevail. In addition, the terms used in this description are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0076] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the technical concept of the present application, all of which belong to the protection scope of the present application.

[0077] It should be noted that in the description of this article, the terms "middle", "front", "upper", "lower", "top", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0078] In addition, the terms "installed", "set", "provided with", "connected", "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A wet water mist fire extinguishing system taking into account ammonia absorption, characterized in that: include: A water supply pipeline assembly, comprising a water supply main pipeline and a plurality of water supply branch pipelines respectively connected to the water supply main pipeline, wherein the inlet end of the water supply main pipeline is connected to the fresh water tank, a stop valve, a water supply pump, a stop check valve and an electromagnetic control valve are sequentially arranged in the middle of the water supply main pipeline, the outlet end of the water supply main pipeline is connected to a water supply pressure regulating tank, the bottom of the water supply pressure regulating tank is respectively connected to a plurality of water supply branch pipelines, each of the water supply branch pipelines is provided with an electric control partition valve, and the plurality of water supply branch pipelines are respectively connected to a plurality of areas where the ammonia fuel equipment is located; A control air pipeline assembly, comprising a plurality of release control valve boxes and control air pipelines connected to the release control valve boxes in a one-to-one correspondence, wherein the plurality of control air pipelines are respectively connected to the plurality of areas where the ammonia fuel equipment is located; A water spray assembly, comprising a pneumatically controlled release valve and an open water mist nozzle correspondingly connected to the pneumatically controlled release valve, wherein the pneumatically controlled release valve in each of the areas is connected to the water supply pipe and the control air pipe in the area corresponding to it; The control component includes an intelligent controller, which is communicatively connected with the water supply pump, the electromagnetic control valve, the electric control partition valve, the release control valve box, and the ammonia detector and the smoke and temperature composite detector arranged in each of the areas.

2. The wet water mist fire extinguishing system taking into account ammonia absorption according to claim 1 is characterized in that: The multiple areas where the ammonia fuel equipment is located include at least one ammonia fuel preparation room.

3. The wet water mist fire extinguishing system taking into account ammonia absorption according to claim 2 is characterized in that: Multiple rows and columns of the water supply pipes and the control air pipes arranged parallel to the water supply pipes are arranged in the ammonia fuel preparation room, wherein each row and column of the water supply pipes and the control air pipes are connected to multiple water spray assemblies, and flanges are arranged at the ends of the multiple rows and columns of the water supply pipes.

4. The wet water mist fire extinguishing system taking into account ammonia absorption according to claim 1 is characterized in that: The capacity of the water supply pressure stabilizing tank is determined according to the maximum water consumption required by the area farthest from the water supply pump.

5. The wet water mist fire extinguishing system taking into account ammonia absorption according to claim 1 is characterized in that: The release control valve box is provided with an air inlet and an air outlet, the air inlet is connected to external control air, and the air outlet is connected to the control air pipeline.

6. The wet water mist fire extinguishing system taking into account ammonia absorption according to claim 1, characterized in that: The top of the water supply pressure stabilizing tank is provided with an air supply valve, a pressure sensor and a pressure transmitter.

7. The wet water mist fire extinguishing system taking into account ammonia absorption according to claim 1 is characterized in that: The inlet end of the water supply main pipeline is communicated with the fresh water tank through a suction port.

8. A wet water mist fire extinguishing method taking into account ammonia absorption, characterized in that: The wet water mist fire extinguishing system taking into account ammonia absorption as described in any one of claims 1 to 7 is used to extinguish fires and absorb ammonia in multiple areas where ammonia fuel equipment is located on a ship.

9. The wet water mist fire extinguishing method taking into account ammonia absorption according to claim 8, characterized in that: include: Ensure that the pressure value of the water supply pressure regulating tank is always above the set value. At the same time, ensure that the water supply pipeline is full of water and its water pressure is greater than the working pressure of the open water mist nozzle; According to the detection results in multiple areas where the ammonia fuel equipment is located, the intelligent controller controls the opening and closing of the solenoid valve inside the release control valve box, controls the opening and closing of the pneumatic control release valve, and then controls the open water mist nozzles in the corresponding areas to release water mist.

10. A ship, characterized in that: The invention comprises a hull and a wet water mist fire extinguishing system with ammonia absorption as described in any one of claims 1 to 7 and arranged on the hull.

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