Safety system of ammonia fuel equipment room and ship
By integrating the safety systems between ammonia fuel equipment and utilizing intelligent controllers and multiple sensors, all-round safety monitoring and automated emergency response of ammonia fuel equipment are achieved, solving the problem of insufficient systematic safety measures in existing technologies and improving the safety and evacuation efficiency of ammonia fuel ships.
Patent Information
- Application Number
- CN202422753676.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The existing technology's systematic safety measures for ammonia-fueled ships are not comprehensive enough, and lack automated and intelligent safety assurance systems, resulting in insufficiently rapid and safe evacuation of personnel in emergency situations such as ammonia fuel leaks or fires.
A safety system for ammonia fuel equipment rooms has been designed, integrating ammonia gas detection probes, fire detection probes, negative pressure detection sensors, controllers, nozzle assemblies, alarm assemblies, and reset devices. Through the intelligent controller, it monitors in real time and automatically triggers alarms and safety measures, such as nozzle activation, negative pressure elimination, escape guide light strips, etc., providing multiple modes to adapt to different emergency situations.
It achieves all-round safety monitoring and automated emergency response for ammonia fuel equipment, significantly shortens emergency evacuation time, and improves operator safety and system reliability.
Smart Images
Figure CN223401280U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of ship technology, and in particular to a safety system for an ammonia fuel equipment room and a ship. Background Art
[0002] With continuous breakthroughs in the research and development of marine ammonia-fueled diesel engine technology, it is expected that more new ships or existing ship conversion projects will adopt ammonia fuel as a power source. This trend will help the shipping industry achieve its emission reduction goals and promote the industry's transition to cleaner and more environmentally friendly energy solutions.
[0003] Given the high toxicity of ammonia, ensuring the safety of personnel onboard ammonia-fueled vessels is paramount. While current regulations emphasize the importance of personal protective equipment, such as respirators, requirements for systemic safety measures are less comprehensive. To enhance crew safety during operations, the installation of a more reliable safety system is crucial. Utility Model Content
[0004] In view of this, the main purpose of this application is to provide a safety system and ship for an ammonia fuel equipment room, so as to achieve the purpose of comprehensively enhancing systematic safety measures and providing a higher level of safety protection.
[0005] In a first aspect, the present application provides a safety system for an ammonia fuel equipment room, comprising:
[0006] A detection component, which includes an ammonia gas detection probe, a fire detection probe, and a negative pressure detection sensor to detect the safety conditions inside the ammonia fuel equipment room, including ammonia concentration, smoke concentration, and pressure;
[0007] Alarm components, including automatic alarm components and manual alarm components;
[0008] A nozzle assembly including a plurality of nozzles;
[0009] A control component, comprising a controller, a nozzle control terminal, a start-stop control terminal, and a negative pressure elimination control terminal, wherein the controller is electrically connected to the nozzle control terminal, the start-stop control terminal, the negative pressure elimination control terminal, the detection component, and the alarm component, respectively, and the nozzle control terminal is electrically connected to the nozzle assembly;
[0010] The safety guarantee component includes a reset device, which is electrically connected to the controller.
[0011] As described above, after the controller is started by the start-stop control terminal, and the controller triggers the detection component, alarm component and other devices to work normally, the detection component will transmit the ammonia concentration, smoke concentration and pressure and other signals detected in the ammonia fuel equipment room to the controller, and the controller's operating mode is triggered by the automatic trigger signal of the detection component and the manual trigger signal of the safety assurance component. The controller triggers the working status of the alarm component, the nozzle control terminal and the negative pressure elimination control terminal to provide timely and effective safety protection.
[0012] Optionally, the multiple nozzles include multiple isolated water curtain nozzles and multiple water spray nozzles.
[0013] Optionally, the nozzle control terminal includes a water curtain nozzle control terminal and a water sprinkler nozzle control terminal.
[0014] Optionally, the nozzle control terminal is electrically connected to the nozzle assembly, and further includes: a water curtain nozzle control terminal is electrically connected to the isolation water curtain nozzle; and a water spray nozzle control terminal is electrically connected to the water spray nozzle.
[0015] From the above, the controller controls whether to trigger the water curtain nozzle control terminal and the water sprinkler nozzle control terminal according to the analyzed sensor signals. In case of fire or ammonia leakage, the water curtain nozzle control terminal and the water sprinkler nozzle control terminal are controlled separately to improve safety and processing efficiency.
[0016] Optionally, isolation water curtain nozzles are arranged at the entrances and exits and vents of the ammonia fuel equipment room, and multiple water spray nozzles are evenly arranged inside the ammonia fuel equipment room.
[0017] As shown above, the isolation water curtain nozzles are set at the entrances and exits and vents of the ammonia fuel equipment room to prevent ammonia from overflowing; the water spray nozzles are evenly arranged inside the ammonia fuel equipment room to effectively absorb ammonia and extinguish fires.
[0018] Optionally, the negative pressure elimination control terminal is electrically connected to the ventilation component of the ammonia fuel equipment room to adjust the pressure inside the ammonia fuel equipment room.
[0019] As described above, the controller automatically activates the negative pressure elimination control terminal based on the negative pressure exceeding standard signal provided by the negative pressure detection sensor. The negative pressure elimination control terminal increases the inflow of external fresh air or reduces the discharge of indoor air by controlling the ventilation components until a safe positive pressure state is reached, ensuring that the cabin door is easy to open and facilitating the evacuation of personnel to the outdoors. At the same time, during the pressure adjustment process, the negative pressure detection sensor continues to monitor the pressure changes in the ammonia fuel preparation room and sends real-time data to the controller.
[0020] Optionally, the automatic alarm component includes an alarm escape guide light strip and an audible and visual alarm device, which is used to be automatically triggered by the detection component in the controller.
[0021] As described above, when the detection component detects that the ammonia concentration or smoke concentration in the safety condition of the ammonia fuel preparation room exceeds a certain concentration, the controller analyzes the signal from the detection component. After confirmation, the controller automatically triggers the alarm escape guide light strip and sound and light alarm device to remind and guide personnel to evacuate.
[0022] Optionally, the manual alarm component includes a fire alarm button, which is used to trigger the alarm escape guide light strip and the sound and light alarm device by the controller after being manually triggered.
[0023] As described above, when personnel discover ammonia leakage or fire, but the detection component does not detect it, by manually triggering the fire alarm button, the controller triggers the alarm escape guide light strip and the sound and light alarm device according to the alarm signal of the fire alarm button, reminding and guiding personnel to evacuate, thereby providing a backup safety measure.
[0024] In a second aspect, the present application provides a ship comprising a hull and a safety system between any one of the ammonia fuel equipment described above and arranged on the hull.
[0025] In summary, the safety system and ship for the ammonia fuel equipment room provided in the present application integrate multiple functions such as an alarm escape guide light strip, an audible and visual alarm device, an ammonia gas detection probe, a water curtain nozzle control terminal, a water sprinkler nozzle control terminal, a start-stop control terminal, a negative pressure elimination control terminal, a reset device, a fire detection probe, a fire alarm button, and a negative pressure detection sensor through a controller. The water curtain nozzle control terminal and the water sprinkler nozzle control terminal respectively control the isolation water curtain nozzle and the water sprinkler nozzle; when the personnel are working normally, the controller determines the safety of the personnel through the reset device; the controller automatically or passively triggers the alarm escape guide light strip and the audible and visual alarm device through the ammonia gas detection probe, the fire detection probe, and the fire alarm button to remind and guide personnel to evacuate to a safe area; the controller ensures the pressure safety in the ammonia fuel preparation room through the negative pressure elimination control terminal; the controller can automatically or manually switch to the corresponding operating mode (start mode, working mode, fire mode, ammonia leakage mode, and shutdown mode) according to real-time monitoring data and manual needs of the personnel, so that the safety system can flexibly adapt to different working environments and provide timely and effective safety protection. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The following further illustrates the various technical features of the present application and the relationships between them 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 intended 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:
[0027] Figure 1 This is a structural diagram of a safety system for an ammonia fuel equipment room in this application.
[0028] Description of Reference Numerals
[0029] 1-controller, 2-alarm escape guide light strip, 3-sound and light alarm device, 4-isolation water curtain nozzle, 5-ammonia gas detection probe, 6-water sprinkler nozzle, 7-water curtain nozzle control terminal, 8-water sprinkler nozzle control terminal, 9-start and stop control terminal, 10-negative pressure elimination control terminal, 11-reset device, 12-fire detection probe, 13-fire alarm button, 14-negative pressure detection sensor.
[0030] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION
[0031] 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.
[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.
[0033] In 2023, the Maritime Environment Protection Committee (MEPC) of the International Maritime Organization (IMO) approved the 2023 Strategy for Reducing Greenhouse Gas (GHG) Emissions from Ships at its 80th session. The strategy brings forward several key milestones and sets multiple targets designed to drive the shipping industry towards a greener and more sustainable future.
[0034] In response to the International Maritime Organization's greenhouse gas emission reduction strategy, shipowners are increasingly opting for low-carbon and carbon-free fuels. Ammonia fuel, in particular, is considered a carbon-free energy option due to its chemical composition, which contains no carbon. In recent years, many shipowners have begun considering ammonia fuel compatibility in newbuildings, opting to build ammonia-ready vessels.
[0035] Ammonia-fueled vessels typically have multiple dedicated compartments for ammonia fuel bunkering and handling equipment and valves. These equipment require routine and emergency operation and maintenance when using ammonia fuel. Given the potential for ammonia fuel leaks and its toxic nature, ensuring rapid evacuation of operators in the event of an emergency is crucial for their safety.
[0036] Therefore, in ship design, considering the potential diffusion risk of ammonia fuel, an independent gas detection system is usually equipped. Before entering the relevant compartment, it is necessary to confirm with the duty personnel whether the ammonia concentration is within the safe range. Only when it is confirmed to be safe can personnel enter. If a leak occurs during use, the duty personnel should immediately notify all personnel to evacuate through the broadcasting system. However, many operations in this process still require manual intervention, such as eliminating the negative pressure in the cabin to open the hatch, etc., which may increase the risk in emergency evacuation. In order to improve safety, it is possible to consider introducing automated systems to reduce human intervention, such as automatic negative pressure elimination control devices and more advanced gas leak response mechanisms to ensure quick and safe evacuation in an emergency.
[0037] This application utilizes an integrated intelligent design to provide a safety system for ammonia fuel equipment rooms. This system monitors and warns personnel of potential emergencies in real time, automatically and rapidly directing operators to safely evacuate or issuing rescue notifications, significantly reducing the unpredictable risks operators face. This safety system has five operating modes, comprehensively covering every step of the process from entering the ammonia fuel equipment area to safely evacuating. Through intelligent management, it reduces reliance on on-duty personnel, provides rapid and reliable safety warnings and evacuation guidance, and effectively shortens the time required for emergency evacuations.
[0038] Once activated, the safety system automatically performs a series of safety checks, including ammonia gas detection, fire warning, negative pressure relief, and reset activation. Only after ensuring a safe environment can personnel enter the room to work. During operation, if the reset operation is not performed within the specified time, the safety system will automatically alert the on-duty personnel, prompting them to pay attention to the safety conditions in the room. If an ammonia fuel leak is detected, the gas detection system will immediately issue a real-time alarm, activating the audible and visual alarms in the room to prompt personnel to evacuate quickly. Simultaneously, the safety system automatically initiates the negative pressure relief procedure and illuminates the evacuation route indicators, providing a clear escape path. These systematic features are designed to provide comprehensive safety protection for operators, ensuring a swift and orderly evacuation in an emergency.
[0039] The following describes in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems using 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.
[0040] In one aspect, the present application provides a safety system for an ammonia fuel equipment room, comprising:
[0041] A detection component, which includes an ammonia gas detection probe, a fire detection probe, and a negative pressure detection sensor to detect the safety conditions inside the ammonia fuel equipment room, including ammonia concentration, smoke concentration, and pressure;
[0042] Alarm components, including automatic alarm components and manual alarm components;
[0043] A nozzle assembly including a plurality of nozzles;
[0044] A control component, comprising a controller, a nozzle control terminal, a start-stop control terminal, and a negative pressure elimination control terminal, wherein the controller is electrically connected to the nozzle control terminal, the start-stop control terminal, the negative pressure elimination control terminal, the detection component, and the alarm component, respectively, and the nozzle control terminal is electrically connected to the nozzle assembly;
[0045] The safety guarantee component includes a reset device, which is electrically connected to the controller.
[0046] Specifically, after the controller is started by the start-stop control terminal, and the controller triggers the detection component, alarm component and other devices to work normally, the detection component will transmit the ammonia concentration, smoke concentration and pressure and other signals detected in the ammonia fuel equipment room to the controller. The automatic trigger signal of the detection component and the manual trigger signal of the safety assurance component will trigger the operating mode of the controller, and the controller will trigger the working status of the alarm component, nozzle control terminal and negative pressure elimination control terminal to provide timely and effective safety protection.
[0047] In a specific embodiment of the present application, the controller can be implemented by a logic circuit. The start-stop control terminal inputs a level signal (which can be set to a high level signal) to the controller, and the controller is activated. The controller will transmit a level signal to trigger the alarm component and the detection component to detect whether the alarm component and the detection component can work normally; when the personnel enter the ammonia fuel preparation room, the safety assurance component, that is, the reset device, is manually triggered at predetermined intervals. The reset device transmits a level signal (which can be set to a low level signal) to the controller. When the timing circuit inside the controller receives the level signal within the predetermined time, no level signal is transmitted back. When the timing circuit inside the controller does not receive the level signal within the predetermined time, the controller sends a level signal to the alarm component to determine whether the personnel are safe in this way; when the ammonia gas detection probe in the detection component When the nozzle or fire detection probe detects that the ammonia concentration or smoke concentration inside the ammonia fuel preparation room exceeds the standard, the ammonia gas detection probe or fire detection probe sends a level signal to the controller, and the controller sends back a level signal to trigger the nozzle control terminal. The nozzle control terminal can be set as a switch to control the opening and closing of the nozzle. When the nozzle control terminal receives the level signal from the controller, it directly opens the valve to allow water to spray out from the nozzle; the negative pressure detection sensor in the detection component detects the gas pressure inside the ammonia fuel preparation room in real time. When the pressure exceeds the standard, the negative pressure detection sensor transmits a level signal to the controller, and the controller sends back a level signal to trigger the negative pressure elimination control terminal, and the negative pressure elimination control terminal adjusts the gas pressure inside the ammonia fuel preparation room.
[0048] Optionally, the multiple nozzles include multiple isolated water curtain nozzles and multiple water spray nozzles.
[0049] Optionally, the nozzle control terminal includes a water curtain nozzle control terminal and a water sprinkler nozzle control terminal.
[0050] Optionally, the nozzle control terminal is electrically connected to the nozzle assembly, and further includes: a water curtain nozzle control terminal is electrically connected to the isolation water curtain nozzle; and a water spray nozzle control terminal is electrically connected to the water spray nozzle.
[0051] Specifically, the controller controls whether to trigger the water curtain nozzle control terminal and the water sprinkler nozzle control terminal based on the analyzed sensor signals. In the event of fire or ammonia leakage, the water curtain nozzle control terminal and the water sprinkler nozzle control terminal are controlled separately to improve safety and processing efficiency.
[0052] Optionally, isolation water curtain nozzles are arranged at the entrances and exits and vents of the ammonia fuel equipment room, and multiple water spray nozzles are evenly arranged inside the ammonia fuel equipment room.
[0053] Specifically, isolation water curtain nozzles are set at the entrances and exits and vents of the ammonia fuel equipment room to prevent ammonia from overflowing; water spray nozzles are evenly arranged inside the ammonia fuel equipment room to effectively absorb ammonia and extinguish fires.
[0054] Optionally, the negative pressure elimination control terminal is electrically connected to the ventilation component of the ammonia fuel equipment room to adjust the pressure inside the ammonia fuel equipment room.
[0055] Specifically, the controller automatically activates the negative pressure elimination control terminal based on the negative pressure exceeding standard signal provided by the negative pressure detection sensor. The negative pressure elimination control terminal controls the ventilation components to increase the inflow of external fresh air or reduce the discharge of indoor air until a safe positive pressure state is reached, ensuring that the cabin door is easy to open and helping to discharge toxic gases outdoors. At the same time, during the pressure adjustment process, the negative pressure detection sensor continues to monitor the pressure changes in the ammonia fuel preparation room and sends real-time data to the controller.
[0056] Optionally, the automatic alarm component includes an alarm escape guide light strip and an audible and visual alarm device, which is used to be automatically triggered by the detection component in the controller.
[0057] Specifically, when the detection component detects that the ammonia concentration or smoke concentration in the safety condition of the ammonia fuel preparation room exceeds a certain concentration, the controller analyzes the signal from the detection component. After confirmation, the controller automatically triggers the alarm escape guide light strip and sound and light alarm device to remind and guide personnel to evacuate.
[0058] Optionally, the manual alarm component includes a fire alarm button, which is used to trigger the alarm escape guide light strip and the sound and light alarm device by the controller after being manually triggered.
[0059] Specifically, when personnel discover ammonia leakage or fire, but the detection component fails to detect it, the fire alarm button is manually triggered. The controller triggers the alarm escape guide light strip and the sound and light alarm device according to the alarm signal of the fire alarm button to remind and guide personnel to evacuate, thereby providing a backup safety measure.
[0060] The following is for Figure 1 The safety system of the ammonia fuel equipment room proposed in this application is described in detail.
[0061] like Figure 1 As shown, the safety system includes a controller 1, an alarm escape guide light strip 2, an audible and visual alarm device 3, an isolation water curtain nozzle 4, an ammonia gas detection probe 5, a water sprinkler nozzle 6, a water curtain nozzle control terminal 7, a water sprinkler nozzle control terminal 8, a start and stop control terminal 9, a negative pressure elimination control terminal 10, a reset device 11, a fire detection probe 12, a fire alarm button 13 and a negative pressure detection sensor 14.
[0062] Among them, the water curtain nozzle control terminal 7, the water sprinkler nozzle control terminal 8, the start and stop control terminal 9 and the negative pressure elimination control terminal 10 can be set outside the room of the ammonia fuel equipment room. The four control terminals can adopt a combined control box, which has the advantages of high integration and easy operation.
[0063] The reset device 11 can use motion sensing sensors to complete the detection of personnel safety. Its advantage is that the reset operation can be completed without the personnel leaving their work position. The reset device 11 is an important part of the safety system of the ammonia fuel equipment room. Its main function is to ensure the safety of operators during work and provide a mechanism to regularly confirm their status. Therefore, in order to cover the entire working area, the reset device 11 needs to be installed at different locations inside the room of the ammonia fuel equipment room, and the installation location must be clearly visible.
[0064] When the operator enters the ammonia fuel equipment room and starts working, the operator needs to press the reset device 11 nearby every T minutes. At the same time, the reset device 11 sends a signal to the controller 1, indicating that the operator is still working safely and has not encountered any emergency. In this way, the safety system can continuously monitor the operator's status.
[0065] If the operator does not perform a reset operation within the specified T minutes, the controller 1 will automatically trigger a safety alarm immediately. The safety system will immediately notify the on-duty personnel so that necessary manual intervention measures can be taken quickly to deal with potential safety issues.
[0066] The controller 1 can be set outside the room of the ammonia fuel equipment room; the sound and light alarm device 3, the isolation water curtain nozzle 4, the ammonia gas detection probe 5, the water sprinkler nozzle 6, the reset device 11, the fire detection probe 12, the fire alarm button 13 and the negative pressure detection sensor 14 must be set inside the room of the ammonia fuel equipment room.
[0067] Controller 1 is the core component of the safety system, responsible for monitoring and coordinating all safety functions. Specifically, controller 1 analyzes signals from various sensors (such as ammonia gas detection probe 5, fire detection probe 12, etc.) and manual input signals from operators to intelligently adjust the operating status of various control terminals (such as isolation water curtain nozzle control terminal 7, water sprinkler nozzle control terminal 8, etc.) to ensure safety warning, guidance and protection for operators. Controller 1 can automatically switch between different operating modes, such as startup mode, working mode, fire mode, ammonia leak mode and shutdown mode, according to real-time conditions, and implement corresponding safety measures.
[0068] The alarm escape guide light strip 2 is mainly set up around the external corridor of the ammonia fuel equipment room; in addition, the alarm escape guide light strip 2 should also be installed at the entrance and exit of the ammonia fuel equipment room, along the main passage leading to the safe exit, near important work areas such as the ammonia fuel equipment concentration area, at the corners of the external corridor and at the intersection of multiple passages to ensure that clear escape route instructions can be provided to the operators.
[0069] The sound and light alarm device 3 can integrate multifunctional alarms such as ammonia leakage, water spray release and fire detection to ensure that it can issue an alarm in time in various emergency situations.
[0070] The fire alarm button 13 is used to manually trigger the fire alarm. The sound and light alarm device 3 may fail to detect a fire in time due to various reasons (such as sensor failure, smoke or flame obstruction, etc.). Therefore, the fire alarm button 13 allows personnel to manually trigger the alarm, thus providing a backup safety measure. In some cases, the operator may detect signs of fire earlier than the safety system, such as smelling burning or seeing initial smoke. In this case, the operator can use the fire alarm button 13 to immediately notify other personnel and activate appropriate emergency measures without waiting for the safety system to react.
[0071] When an ammonia leak occurs in the ammonia fuel equipment room, the isolation water curtain nozzle 4 quickly forms a water curtain to isolate and dilute the leaked ammonia to reduce the harm to the operating personnel. The isolation water curtain nozzle 4 is usually set above or around each entrance and exit of the ammonia fuel equipment room, near the vents, near the important equipment for storing or using ammonia fuel, and near the location of ammonia fuel pipelines, valves and other connecting parts. The isolation water curtain nozzle 4 should be able to cover the critical path of the entire ammonia fuel equipment room and work closely with the ammonia gas detection probe 5; when an ammonia leak is detected, the controller 1 sends a command to the water curtain nozzle control terminal 7 to start the isolation water curtain nozzle 4 to form a water curtain to isolate and dilute the ammonia and reduce the harm.
[0072] The ammonia gas detection probe 5 monitors the ammonia concentration in the ammonia fuel equipment room in real time. Once an ammonia leak is detected, the ammonia gas detection probe 5 immediately sends a signal to the controller 1. The controller 1 receives and analyzes the signal from the ammonia gas detection probe 5. After confirming the existence of an ammonia leak, it automatically switches to the ammonia leakage mode. At the same time, the controller 1 triggers the sound and light alarm device 3, and emits obvious sound and light signals to alert the operator and surrounding personnel of the occurrence of ammonia leakage. At the same time, the controller 1 activates the alarm escape guide light strip 2 to a flashing state, providing the operator with clear instructions for emergency evacuation.
[0073] Fire detection probes 12 are used to detect early signs of fire. When a fire or ammonia leak occurs, the controller 1 activates the sprinkler control terminal 8 to control the sprinkler 6 to open, effectively controlling the fire or ammonia adsorption in the ammonia fuel equipment room and reducing personal injury.
[0074] The start / stop control terminal 9 allows the operator to manually start or stop the safety system to respond to various emergency situations. The controller 1 determines whether to enable various functions of the safety system based on the status of the start / stop control terminal 9. The start / stop control terminal 9 typically provides a switch or button, allowing the operator to manually activate or deactivate the safety system, enhancing its flexibility and practicality.
[0075] The negative pressure elimination control terminal 10 is mainly used to adjust the pressure in the ammonia fuel equipment room to ensure that people can evacuate safely in an emergency. When a negative pressure state occurs in the room, this may hinder the opening of the door or make it difficult to discharge harmful gases, thereby affecting the safe evacuation of people. The negative pressure detection sensor 14 installed in the ammonia fuel equipment room continuously monitors the pressure state inside the room. If it is detected that the pressure inside the room is lower than the set safety threshold, that is, there is a negative pressure situation, the information will be transmitted to the controller 1. After the controller 1 receives the signal that the negative pressure exceeds the standard, it automatically activates the negative pressure elimination control terminal 10, and the negative pressure elimination control terminal 10 is usually connected to the ventilation system to balance the pressure difference inside and outside the room by adjusting the air circulation in the ammonia fuel equipment room. Specifically, the negative pressure elimination control terminal 10 will increase the inflow of fresh air from the outside or reduce the discharge of indoor air until a safe positive pressure state is reached, which can ensure that the door is easy to open and help to discharge toxic gases outdoors.
[0076] exist Figure 1In a specific embodiment shown, a plurality of sub-areas are provided inside the ammonia fuel equipment room, and at least twelve water spray nozzles 6 are evenly arranged above the interior of the ammonia fuel equipment room, distributed in three rows and four columns. The coverage of the water spray nozzles 6 covers the entire ammonia fuel equipment room and also covers a plurality of sub-areas therein. At least three ammonia gas detection probes 5 and at least two fire detection probes 12 are provided inside the ammonia fuel equipment room, and sound and light alarm devices 3 are provided on both sides of the interior of the ammonia fuel equipment room. Reset devices 11 are provided at multiple locations inside the ammonia fuel equipment room, at least one of which is provided at the entrance and exit of the ammonia fuel equipment room, and at least one of which is provided at the entrance and exit of the ammonia fuel equipment room. At least three are set up inside the fuel equipment room. An alarm escape guide light strip 2 is set around the inside of the ammonia fuel equipment room. The LED light strip arrows of the alarm escape guide light strip 2 point to the two entrances and exits of the ammonia fuel equipment room. Isolation water curtain nozzles 4 and negative pressure elimination control terminals 10 are set at the entrances and exits of the ammonia fuel equipment room. Fire alarm buttons 13, water curtain nozzle control terminals 7, water sprinkler nozzle control terminals 8, start and stop control terminals 9, negative pressure elimination control terminals 10 and fire alarm buttons 13 are set in sequence between the exit and entrance outside the ammonia fuel equipment room. A controller 1 is set at the corner of the room outside the ammonia fuel equipment room.
[0077] On the other hand, the present application provides a safety method for an ammonia fuel equipment room, which uses any of the above-mentioned safety systems for an ammonia fuel equipment room, including:
[0078] Trigger the controller via the start / stop control terminal;
[0079] The safety assurance component is manually triggered at predetermined intervals, and the controller determines that the personnel are safe;
[0080] According to the safety status in the ammonia fuel equipment room detected by the detection component, the controller triggers the alarm component, the nozzle control terminal and the negative pressure elimination control terminal;
[0081] According to the control instructions of the controller, the nozzle control terminal triggers the nozzle assembly, the negative pressure elimination control terminal triggers the ventilation assembly, the nozzle assembly and the ventilation assembly adjust the safety conditions in the ammonia fuel equipment room and notify personnel to evacuate.
[0082] This application specifically designs an intelligent safety system for ammonia fuel equipment rooms. Through an integrated controller 1, it can analyze signals from various sensors and manual instructions from operators in real time. The controller 1 is highly intelligent and can automatically adjust the operating state of the control terminal to adapt to the current environmental conditions.
[0083] The safety system can automatically or manually switch to the appropriate mode based on real-time monitoring data and operator needs. This intelligent operating mode switching function enables the safety system to flexibly adapt to different working environments and provide timely and effective safety protection.
[0084] The safety system is designed with five operating modes: startup mode, operating mode, fire mode, ammonia leak mode, and shutdown mode. These modes cover various situations operators may encounter in the equipment room. Each mode has targeted safety measures to ensure the most appropriate protection for the specific situation.
[0085] Mode 1: Startup mode
[0086] Before operators prepare to enter the ammonia fuel equipment room, they will use the start-stop control terminal 9 to activate the safety system. At this time, the safety system will automatically perform a series of safety checks:
[0087] (1) Fire detection: The safety system will automatically scan for potential fire risks through the fire detection probe 12;
[0088] (2) Ammonia detection: The ammonia gas detection probe 5 will monitor the ammonia concentration in the room in real time to ensure environmental safety;
[0089] (3) Negative pressure detection: The negative pressure detection sensor 14 will check the air pressure status of the room. If it is detected that the negative pressure exceeds the standard, the safety system will automatically start the negative pressure elimination control terminal 10 through the controller 1 to balance the air pressure;
[0090] (4) Activation of the guide light strip: Once the above checks are completed, the alarm escape guide light strip 2 in the room will be activated to provide the operator with a clear escape route.
[0091] After all these safety measures are confirmed to be correct, the system will issue a safety prompt, indicating that the room is ready and the operator is allowed to enter and start work. Then, the safety system automatically switches to working mode.
[0092] Mode 2: Working mode
[0093] When an operator enters the ammonia fuel equipment room and starts working, the operator needs to follow the safety procedure, that is, press the reset device 11 every T minutes. This operation confirms the operator's safety status to the safety system to ensure that everything is normal.
[0094] (1) Periodic safety confirmation: The operator periodically presses the reset device 11 to send a signal to the controller 1 indicating that the operator is still working safely and has not encountered any emergency situation;
[0095] (2) Timeout automatic alarm: If the operator does not perform a reset operation within the specified T minutes, the controller 1 will automatically trigger the safety alarm function. This mechanism is to deal with possible emergencies, such as when the operator encounters an accident and is unable to report it himself;
[0096] (3) Emergency response: Once the security alarm function is triggered, the security system will immediately notify the on-duty personnel so that they can quickly take necessary manual intervention measures to deal with potential safety issues.
[0097] This design ensures continuous monitoring of operators during work, while providing a rapid response mechanism for possible emergencies, thereby maximizing operator safety.
[0098] Mode 3: Fire Mode
[0099] During the operator's work, if the controller 1 detects a fire through the fire detection probe 12, the safety system will automatically switch to the fire mode and take the following emergency measures:
[0100] (1) Sound and light alarm: The safety system will activate the sound and light alarm device 3 in real time, emitting obvious sound and light signals to warn the operator and surrounding people of the occurrence of fire;
[0101] (2) Evacuation guidance: The alarm escape guidance light strip 2 will switch to a flashing state, providing operators with clear instructions for emergency evacuation;
[0102] (3) Environmental control: This safety system will automatically stop the fans in the room (here and in the following text, specifically the ammonia fuel equipment room) to prevent the spread of fire and smoke;
[0103] In addition, after receiving the sound and light alarm, the operator should immediately evacuate the room quickly and orderly according to the direction indicated by the alarm escape guide light strip 2;
[0104] (4) Emergency fire extinguishing: While evacuating safely, the operator should use the fire alarm button 13 outside the room to notify other personnel and activate the water sprinkler control terminal 8 to start the water sprinkler 6 for preliminary fire extinguishing.
[0105] This automated and orderly fire response process is designed to minimize damage caused by fire and ensure the safe evacuation of operators.
[0106] Mode 4: Ammonia leakage mode
[0107] During the operator's work, if the safety system detects ammonia leakage through the ammonia gas detection probe 5, it will immediately switch to the ammonia leakage mode and take the following emergency measures:
[0108] (1) Sound and light alarm: The safety system will activate the sound and light alarm device 3 in real time, emitting obvious sound and light signals to warn the operator and surrounding personnel of the occurrence of ammonia leakage;
[0109] (2) Evacuation guidance: The alarm escape guidance light strip 2 will switch to a flashing state, providing operators with clear instructions for emergency evacuation;
[0110] (3) Environmental control: The safety system will automatically start the negative pressure elimination control terminal 10 to prevent the spread of ammonia;
[0111] In addition, after receiving the sound and light alarm, the operator should immediately evacuate the room quickly and orderly according to the direction indicated by the alarm escape guide light strip 2;
[0112] (4) Emergency ventilation: After the personnel have evacuated, the safety system will automatically start the emergency ventilation system and increase the ventilation volume to further dilute and discharge the leaked ammonia;
[0113] (5) Adsorption and Isolation: The operator activates the water spray nozzle 6 outside the room through the water spray nozzle control terminal 8 to adsorb and neutralize the ammonia. At the same time, the operator activates the isolation water curtain nozzle 4 through the water curtain nozzle control terminal 7 to physically isolate the leakage area and prevent further spread of ammonia.
[0114] This automated and organized ammonia leak response process is designed to minimize the risks posed by ammonia leaks and ensure the safe evacuation of operators.
[0115] Mode 5: Off mode
[0116] After the operator completes the work task in the ammonia fuel equipment room and exits safely, the safety system should be set to shutdown mode using the start-stop control terminal 9. In this mode, the safety system will perform the following operations:
[0117] (1) Turn off the alarm escape guide light strip: The alarm escape guide light strip 2 in the room will be turned off to indicate that there is no emergency situation and the room has returned to normal;
[0118] (2) Stop reset detection: The safety system will stop the regular detection of the reset device 11, because it is no longer necessary to monitor the status of the operator in the room.
[0119] Nevertheless, to ensure continuous safety monitoring, the security system will still keep the fire detection probe 12 and the ammonia gas detection probe 5 active, and these devices can continue to monitor the room in real time through other security monitoring systems. In this way, even in the off mode, once a fire or ammonia leak is detected, the security system can still issue an alarm in time and take necessary safety measures.
[0120] In this way, the shutdown mode is designed to provide operators with a safe and orderly working environment, while ensuring that the security monitoring of the room is not completely interrupted when it is not in operation.
[0121] This safety system features a highly integrated design, simplifying the operational process and providing an intuitive and easy-to-understand user interface, making it easy for operators to quickly master and use it. The system's advanced intelligence capabilities accurately identify and respond to potential security threats, providing efficient human safety solutions and ensuring the highest level of protection for personnel. Leveraging a mature parts supply chain, the system's overall cost is effectively controlled, reducing overall costs while ensuring reliability and ease of maintenance.
[0122] On the other hand, the present application provides a ship, comprising a hull and a safety system between any one of the ammonia fuel equipment described above and arranged on the hull.
[0123] In summary, the safety system and ship for the ammonia fuel equipment room provided in the present application integrate multiple functions such as an alarm escape guide light strip, an audible and visual alarm device, an ammonia gas detection probe, a water curtain nozzle control terminal, a water sprinkler nozzle control terminal, a start-stop control terminal, a negative pressure elimination control terminal, a reset device, a fire detection probe, a fire alarm button, and a negative pressure detection sensor through a controller. The water curtain nozzle control terminal and the water sprinkler nozzle control terminal respectively control the isolation water curtain nozzle and the water sprinkler nozzle; when the personnel are working normally, the controller determines the safety of the personnel through the reset device; the controller automatically or passively triggers the alarm escape guide light strip and the audible and visual alarm device through the ammonia gas detection probe, the fire detection probe, and the fire alarm button to remind and guide personnel to evacuate to a safe area; the controller ensures the pressure safety in the ammonia fuel preparation room through the negative pressure elimination control terminal; the controller can automatically or manually switch to the corresponding operating mode (start mode, working mode, fire mode, ammonia leakage mode, and shutdown mode) according to real-time monitoring data and manual needs of the personnel, so that the safety system can flexibly adapt to different working environments and provide timely and effective safety protection.
[0124] Unless otherwise defined, all technical and scientific terms used in this application are the same as those commonly understood by those skilled in the art to which this application belongs. In the event of 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 this application.
[0125] Note that the above are only preferred embodiments of the present application and the technical principles employed. 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 scope of protection of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the technical concept of the present application, all of which fall within the scope of protection of the present application.
[0126] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," "socketed," and the like should be interpreted broadly. For example, they may refer to fixed connections, removable connections, or integral structures; they may refer to mechanical connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.
[0127] The above description is merely 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 safety system for an ammonia fuel equipment room, characterized in that: include: A detection component, which includes an ammonia gas detection probe, a fire detection probe, and a negative pressure detection sensor to detect safety conditions inside the ammonia fuel equipment room, including ammonia concentration, smoke concentration, and pressure; Alarm components, including automatic alarm components and manual alarm components; A nozzle assembly including a plurality of nozzles; A control component, comprising a controller, a nozzle control terminal, a start-stop control terminal, and a negative pressure elimination control terminal, wherein the controller is electrically connected to the nozzle control terminal, the start-stop control terminal, the negative pressure elimination control terminal, the detection component, and the alarm component, respectively, and the nozzle control terminal is electrically connected to the nozzle component; The safety assurance component includes a reset device, which is electrically connected to the controller.
2. The safety system for an ammonia fuel equipment room according to claim 1, characterized in that: The multiple nozzles include multiple isolated water curtain nozzles and multiple water spray nozzles.
3. The safety system for an ammonia fuel equipment room according to claim 2, characterized in that: The nozzle control terminal includes a water curtain nozzle control terminal and a water spray nozzle control terminal.
4. The safety system for an ammonia fuel equipment room according to claim 3, characterized in that: The nozzle control terminal is electrically connected to the nozzle assembly, and further includes: The water curtain nozzle control terminal is electrically connected to the isolation water curtain nozzle; The water spray nozzle control terminal is electrically connected to the water spray nozzle.
5. The safety system for an ammonia fuel equipment room according to claim 2, characterized in that: The isolation water curtain nozzles are arranged at the entrances and exits and the vents of the ammonia fuel equipment room, and a plurality of the water spray nozzles are evenly arranged inside the ammonia fuel equipment room.
6. The safety system for an ammonia fuel equipment room according to claim 1, characterized in that: The negative pressure elimination control terminal is electrically connected to the ventilation component of the ammonia fuel equipment room to adjust the pressure inside the ammonia fuel equipment room.
7. The safety system for an ammonia fuel equipment room according to claim 1, characterized in that: The automatic alarm component includes an alarm escape guide light strip and an audible and visual alarm device, which is used to be automatically triggered by the detection component in the controller.
8. The safety system for an ammonia fuel equipment room according to claim 7, characterized in that: The manual alarm component includes a fire alarm button, which is used to trigger the alarm escape guide light strip and the sound and light alarm device by the controller after being manually triggered.
9. A ship, characterized in that: The invention comprises a hull and a safety system between the ammonia fuel equipment according to any one of claims 1 to 8 and arranged on the hull.