Emergency power supply plant structure and energy storage fire extinguishing system thereof

Abstract

The invention provides an emergency power supply plant structure and an energy storage fire extinguishing system thereof. The emergency power supply plant structure comprises a power generation room and an energy storage room, the power generation room is provided with power generation equipment meeting the emergency power utilization requirement; the energy storage room is provided with energy storage equipment which meets the operation requirement of the power generation equipment; wherein the energy storage room and the power generation room which the energy storage equipment and the power generation equipment belong to respectively are arranged in the emergency power supply plant in a mutually staggered manner in the horizontal direction and the vertical direction. A main oil tank room, namely an energy storage module, is moved outwards to form an independent closed space, and an outdoor fire coupling and an access channel path are additionally arranged. A main oil tank and a diesel engine hall are horizontally staggered and vertically arranged in a layered manner, and a physically isolated independent fireproof unit is constructed, so that the problem of high safety demand of an emergency power supply system of a nuclear power plant is solved.

Description

Technical Field

[0001] This invention relates to the field of safety facility protection technology, and in particular to an emergency power plant structure and its energy storage fire protection system. Background Technology

[0002] Emergency power systems in industrial plants are typically equipped with diesel generator sets as backup power sources. These systems must meet basic power supply capacity and short-term operation requirements, with fuel storage periods generally ranging from 24 to 72 hours. While these systems prioritize power supply reliability, they have relatively lower requirements for equipment safety protection, such as earthquake and explosion resistance. Fuel tanks are often located above ground to simplify fire safety management.

[0003] As nuclear safety-grade equipment, emergency diesel generator sets in nuclear power plants must operate continuously for more than 7 days in the event of a loss of external power (LOOP) to provide emergency power to the safety system. Their design must meet the requirements to withstand extreme external disasters such as earthquakes, aircraft impacts, and blast shocks. The main fuel tank, as a critical fuel supply facility, is classified as a nuclear safety level 3 device and must adopt a horizontal, sealed structure, located in a closed space with disaster protection capabilities.

[0004] The existing layout places the main fuel tank in the basement of the diesel generator plant, using gravity recirculation, fire compartmentation, and an automatic sprinkler system for basic protection. However, the enclosed environment of the basement makes external rescue difficult during a fire, resulting in low efficiency in fire detection and personnel evacuation. Furthermore, the continued burning of the main fuel tank could cause the collapse of the superstructure, directly threatening the safety of the adjacent diesel generator sets. Although the risks can be mitigated through ventilation control, dual-detection alarms, and foam sprinkler systems, the high safety standards unique to nuclear power plants still require addressing the bottlenecks in fire response caused by the enclosed space and the risk of a chain reaction of disasters.

[0005] It should be noted that the information disclosed in the above background section is only used to enhance the understanding of the background of the present invention and does not constitute any limitation on the present invention. Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the present invention provides a structure and emergency power supply system for an emergency power supply room. This is achieved by moving the main oil tank room (i.e., the energy storage module) to an external location to form an independent, enclosed space, and by adding an outdoor fire-fighting interface and access routes. This allows the main oil tank room and the diesel engine hall to be horizontally staggered and vertically layered, constructing physically isolated independent fire-resistant units to address the high safety requirements of emergency power supply systems in nuclear power plants.

[0007] This invention provides an emergency power plant structure, comprising:

[0008] The power generation room is equipped with power generation equipment to meet emergency power needs; and

[0009] An energy storage room is equipped with energy storage devices to meet the needs of power generation equipment operation;

[0010] The energy storage rooms and power generation rooms, which house the energy storage equipment and power generation equipment respectively, are arranged in a staggered manner in the emergency power plant, both horizontally and vertically.

[0011] In one embodiment of the present invention, the emergency power plant structure is a diesel engine plant to meet the emergency power demand for continuous power supply for more than seven days.

[0012] In one embodiment of the present invention, in the emergency power plant structure to which the diesel engine plant belongs, the energy storage room is the main oil tank room, the energy storage equipment is the main oil tank, the power generation room is the diesel engine hall, and the power generation equipment is a diesel generator set.

[0013] In one embodiment of the present invention, the emergency power plant structure further includes an auxiliary equipment room and a fire-fighting equipment room, and the emergency power plant structure forms an enclosed space to meet the external disaster protection requirements.

[0014] In one embodiment of the present invention, the emergency power plant structure further includes a basement level, and at least the energy storage room is located in the basement level of the emergency power plant structure.

[0015] In one embodiment of the present invention, in the emergency power plant structure, the main oil tank room is located below the diesel engine hall, so that unburned fuel and unpressurized leaked oil in the diesel engine hall flow to the main oil tank by gravity, and the energy storage room and the power generation room are vertically offset from each other.

[0016] In one embodiment of the present invention, by moving the main oil tank from the inner side of the wall of the emergency power plant to the outer side of the wall, and constructing a new wall to form an enclosed space for the main oil tank as the main oil tank room, the energy storage room and the power generation room are horizontally offset from each other.

[0017] In one embodiment of the present invention, after the main oil tank room is moved from the inner side of the wall of the main structure of the emergency power plant to the outer side, the depth of the raft foundation of the emergency power plant is reduced.

[0018] In one embodiment of the present invention, the energy storage room is provided with independent fire-resistant zones based on fire-resistant boundaries, and the fire doors of the fire-resistant boundaries meet the watertightness requirements.

[0019] In one embodiment of the present invention, the energy storage room is equipped with video surveillance for monitoring combustibles and combustible gas monitoring.

[0020] In one embodiment of the present invention, the fire-fighting equipment room and the energy storage room are located at the same height level of the emergency power plant structure, and a fire-fighting pipeline connecting to the outside of the emergency power plant structure is provided in the fire-fighting equipment room.

[0021] The present invention also provides an energy storage fire protection system for an emergency power plant, characterized in that it includes:

[0022] The energy storage module converts the energy stored in the power generation module into energy at the power consumption end; and

[0023] The fire protection module monitors the fire situation of the energy storage module through video surveillance and combustible gas monitoring, and connects the energy storage module to the outside of the emergency power plant.

[0024] In one embodiment of the present invention, the fire protection module further includes a fire protection equipment room and fire protection pipelines. The fire protection module includes a fire protection terminal arranged in the fire protection equipment room, and the fire protection pipelines include pipeline terminals arranged outside the fire protection equipment room, the energy storage room, and the emergency power plant. The fire protection equipment room, the energy storage room, and the fire protection pipelines are configured according to the above-described emergency power plant structure.

[0025] The beneficial effects of this invention are as follows: By adjusting the relative positions of the main oil tank room and the diesel engine hall of the plant with minimal changes to the existing overall plant layout design, the main oil tank room and the diesel engine plant are vertically staggered and closely adjacent, separated by solid partition walls. This is achieved through optimization of existing fire prevention, detection, and suppression technologies. The invention minimizes the impact on the existing plant layout design and floor space, is low-cost, and offers high fire detection and suppression effectiveness. It facilitates early detection and assessment of fires in the main oil tank room, allowing for appropriate fire suppression measures to be taken based on the fire's development, thus mitigating the consequences of a fire. This ensures the safety and reliability of nuclear safety equipment and facilities within the plant, and reduces the risk of damage to critical equipment and property.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0028] Figure 1 This is a schematic diagram of the plan structure of the power plant in the emergency power plant structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the elevation structure of the power plant in the emergency power plant structure of the present invention;

[0030] Figure 3 This is a schematic diagram of a portion of the pipeline structure in the emergency power plant structure of the present invention. Detailed Implementation

[0031] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. It should also be understood that the terminology used in the embodiments of the present invention is for describing specific implementation schemes and not for limiting the scope of protection of the present invention.

[0032] Please see Figures 1 to 3 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms used in this specification regarding position, quantity, etc., are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to these relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0033] Please see Figure 1 and Figure 2 The present invention provides an emergency power plant structure, including a power generation room and an energy storage room; the power generation room is equipped with power generation equipment to meet emergency power needs; the energy storage room is equipped with energy storage equipment to meet the operation requirements of the power generation equipment; wherein the energy storage room and the power generation room, to which the energy storage equipment and the power generation equipment belong respectively, are arranged in the emergency power plant in a staggered manner in the horizontal and vertical directions.

[0034] Specifically, in this embodiment of the invention, the power plant 10, in addition to meeting the power consumption needs of the power plant, also needs to be designed according to the safety requirements of the plant area and itself. The power plant 10 generally includes a power generation room for operating generator sets and an energy storage room for supplying energy to the generator sets. The energy stored in the energy storage room is converted into the power consumption parameters required by the power plant through the power generation room. In other words, the energy stored in the energy storage room also poses a fire hazard, and its location in the power plant 10 needs to be reasonably set to control the potential fire risk and reduce the losses caused by fire.

[0035] Furthermore, for the power plant building 10 and the power generation building 10 within the nuclear power plant area, the power generation building 10 uses diesel generators, with the corresponding energy storage room and power generation room being fuel tanks for storing fuel oil and diesel generator sets, respectively. The architectural design of the nuclear power plant emergency diesel power generation building 10 must comply with the protection standards for nuclear safety-grade equipment to meet the emergency power needs of the power plant building. To ensure that the power generation building 10 has continuous power supply capabilities, it is equipped with a fuel oil storage system capable of operating at full load for extended periods, and adopts a disaster-resistant structural design to withstand extreme disasters such as earthquakes, aircraft impacts, and explosive shocks.

[0036] Furthermore, the location of the emergency power supply room needs to be determined based on disaster chain analysis, avoiding high-risk areas. A layout combining ground and underground levels can be chosen, using a staggered design in both horizontal and vertical directions to physically isolate energy storage rooms (e.g., main oil tank room 20) from power generation rooms (e.g., diesel engine hall 30). The horizontal staggered layout ensures safe distances and guarantees that fuel pipelines use a reasonable slope design to maintain unpressurized oil return efficiency. Vertically, a reasonable elevation difference is created by setting the raft foundation elevation of the oil tanks and the foundation elevation of the diesel engine hall 30. The pipeline layout must consider the coordinated laying of ventilation, cables, and fuel pipelines to avoid electromagnetic interference and leakage risks, ensuring the safe and efficient operation of all systems.

[0037] It should be noted that the configuration of energy storage and power generation functions needs to be flexibly adjusted for different application scenarios. In a nuclear power plant scenario, the main oil tank room 20 and the diesel engine hall 30 achieve functional coordination through intelligent monitoring and a positive pressure ventilation system, automatically blocking the intrusion of smoke in the event of a fire. In a hybrid energy storage scenario, a battery energy storage system is introduced as a relay buffer, prioritizing discharge and providing instantaneous response when the mains power is interrupted. The diesel generator set then starts and continuously supplies power, while simultaneously replenishing energy for the energy storage system, balancing timely power supply and endurance.

[0038] Thus, through spatially staggered design, the threat of fire to 10 key pieces of equipment in the power plant, such as oil tanks serving as energy storage devices and diesel generator sets serving as power generation devices, is significantly reduced, improving system maintainability and scalability. Furthermore, the adoption of a hybrid energy storage relay configuration provides a foundation for future compatibility with renewable energy sources, promotes the upgrading of emergency power systems, and ensures the reliability of emergency power supply in high-safety-demand scenarios such as nuclear power plants.

[0039] In one embodiment, the emergency power plant structure is a diesel engine plant to meet emergency power needs for more than seven days of continuous power supply. Within the emergency power plant structure to which the diesel engine plant belongs, the energy storage room is the main oil tank room 20, the energy storage equipment is the main oil tank, the power generation room is the diesel engine hall 30, and the power generation equipment is a diesel generator set.

[0040] Specifically, in this embodiment of the invention, for a diesel engine plant, the fire detection and extinguishing measures commonly used in its main fuel tank room 20 include setting up an independent fire compartment, using daily forced ventilation in the main fuel tank room 20, installing smoke and flame detectors, installing fixed aqueous film forming foam (AFFF) automatic sprinklers, using electrostatic grounding for both the main fuel tank and fuel pipelines, and using explosion-proof equipment for motors and control devices within the plant. In this embodiment, by adjusting the relative positions of the main fuel tank room 20 and the diesel engine hall 30 of the plant, arranging the main fuel tank room 20 and the diesel engine hall 30 in a horizontally and vertically staggered but closely adjacent manner, the fire detection and extinguishing measures are optimized.

[0041] More specifically, the overall safety of the power plant 10 is enhanced through spatial layout optimization. The main oil tank room 20 and the diesel engine hall 30 are arranged vertically in a staggered, adjacent configuration, and physically separated by the walls and floors of the power plant 10. This retains the gravity-flow characteristic of fuel oil while avoiding obstacles to fire rescue caused by enclosed spaces. This layout adjustment upgrades protective measures, improves fire control and isolation effectiveness, and ensures the safe operation of the emergency power system.

[0042] Please see the appendix Figure 1 and Figure 2 In the plan and elevation diagrams of the power plant 10, the enclosed space marked by the red frame is the new enclosed space formed after moving the energy storage room, i.e., the main oil tank room 20, outward. Compared to the original power generation room and diesel engine hall 30 in the power plant 10, this space is staggered in both horizontal and vertical directions. Figure 1 In the schematic diagram of the plan structure, since there is a height difference between the main oil tank room 20 and the diesel engine hall 30, only the positional relationship between the main oil tank room 20 and the power plant room 10 is shown.

[0043] In one embodiment, the emergency power plant structure also includes an auxiliary equipment room and a fire-fighting equipment room, and the emergency power plant structure forms an enclosed space to meet the needs of external disaster protection.

[0044] Specifically, in this embodiment of the invention, the site selection for the emergency power supply room of the nuclear power plant's power plant building 10 prioritizes a closed space layout strategy based on the core safety requirements of external disaster protection. This closed space is not a traditionally fully enclosed structure, but rather an independent safety unit with multiple protection capabilities including explosion resistance, earthquake resistance, and fire prevention, achieved by strengthening the building envelope and internal functional isolation. In other words, the design of the closed space must meet disaster resistance requirements, and can employ a reinforced concrete monolithic cast-in-place structure, with the walls and roof forming a continuous load-bearing system to resist dynamic loads such as impacts from projectiles and blast shock waves. Solid partitions can physically isolate the emergency power supply room from other high-risk areas, blocking the transmission paths of secondary disasters such as fires. Furthermore, the closed space can be divided into fuel storage areas, power generation equipment areas, and electrical control sub-areas, with fireproof partitions and explosion-proof transfer windows between each area, ensuring both the operational interaction needs of the equipment and limiting the spread of localized fires.

[0045] Furthermore, multiple protective measures can be specifically configured within the enclosed space of power plant building 10. For example, ventilation and air pressure control functions can be implemented by setting up a positive pressure air supply system to maintain a slightly positive pressure (>10Pa) in normal operation to prevent the intrusion of external pollutants. In case of fire, it can switch to smoke exhaust mode, forcibly expelling high-temperature smoke through explosion-proof fans. For example, integrated fire protection facilities can be implemented by adding pre-action gas extinguishing devices to the automatic sprinkler system, allowing for non-destructive fire suppression in special areas such as electrical equipment rooms. For example, redundant emergency escape functions can be implemented by pre-setting explosion-proof emergency exits on the side walls of the enclosed space, in addition to the main evacuation routes, directly connecting to outdoor safe assembly points. The exit access control system is linked to the fire alarm signal for unlocking.

[0046] In this way, by using the structural rigidity and functional zoning design of the enclosed space of the power plant building, the physical destructive effects of external disasters are limited to a local area, while the internal protection system forms a multi-level fire suppression mechanism, significantly improving the operational reliability of the emergency power supply system under extreme conditions.

[0047] Please see Figure 2 In one embodiment, the emergency power plant structure further includes a basement level, and at least the energy storage room is located in the basement level of the emergency power plant structure.

[0048] Specifically, in this embodiment of the invention, based on the need for protection against extreme external disasters (such as aircraft impacts and tornado projectiles), the basement level is preferentially selected as the area for energy storage rooms. By fully utilizing the structural characteristics of the underground space—the basement roof slab and the overburden layer forming a natural impact barrier, and the side walls working in synergy with the deep foundation pit retaining structure and backfill soil—the ability to dissipate dynamic loads such as blast shock waves and debris penetration is significantly improved, providing physical protection redundancy for the main oil tank room 20, which stores a large amount of fuel oil.

[0049] More specifically, the layout of the energy storage rooms in the basement can utilize reinforced concrete wall panels and seismic joints to ensure the structural integrity of the basement under earthquake conditions. The roof slab is equipped with a penetration-resistant steel frame layer to withstand the impact of high-speed projectiles. Furthermore, waterproof compartments and explosion-proof walls completely isolate the oil tank room from adjacent equipment areas, preventing cascading risks such as fires and oil / gas explosions caused by fuel leaks. Taking advantage of the vertical difference between the basement and the above-ground diesel engine hall 30, a gravity-fed return oil pipeline system is designed to avoid reliance on mechanical pumping and improve fuel reliability.

[0050] In this way, by arranging the energy in the basement level and utilizing the synergistic design of structural disaster resistance enhancement and risk stratification management, the energy storage space can meet the requirements for protection against extreme external disasters while also ensuring operational safety, thus providing a reliable space for high-safety-level energy storage.

[0051] Please see Figure 2 In one embodiment, in the emergency power plant structure, the main oil tank room 20 is located below the diesel engine hall 30, so that unburned fuel and unpressurized leaked oil in the diesel engine hall flow to the main oil tank by gravity, so that the energy storage room and the power generation room are vertically offset from each other.

[0052] Specifically, in this embodiment of the invention, by arranging the main oil tank room 20 below the diesel engine hall 30, a vertical gravity flow channel is formed, allowing unburned fuel and unpressurized leaked oil during the operation of the diesel generator set to naturally flow back to the main oil tank by gravity, avoiding oil stagnation and potential fire hazards. Simultaneously, the main oil tank room 20 and the diesel engine hall 30 are vertically staggered, using physical space to isolate and block the direct spread of fire, thus constructing a dual protection mechanism.

[0053] More specifically, by maintaining a vertical height difference between the ground floor of the diesel engine hall 30 and the main oil tank room 20 below, and connecting them via an inclined, pressureless oil return pipeline (e.g., with a slope ≥1%), the oil is ensured to flow back autonomously without mechanical power. This eliminates the risk of failure associated with traditional oil pump delivery, and the pipeline is protected by electrostatic grounding and explosion-proof sleeves throughout, avoiding ignition sources caused by flow friction. Simultaneously, ventilation shafts and cable trays are arranged within the staggered space, meeting equipment connection requirements while forming a natural firebreak. In the event of a fire, the staggered structure effectively disperses heat radiation and smoke diffusion. Oil guide channels and collection pits are installed on the ground of the diesel engine hall 30, allowing accidentally leaked oil to flow into the main oil tank room 20 through the guide system, preventing oil accumulation on the ground. Furthermore, the load-bearing columns of the diesel engine hall 30 are positioned away from the area directly above the main oil tank room 20, employing an eccentrically supported frame structure to reduce the risk of continuous structural collapse due to an oil tank fire. Thus, through the design of gravity flow and horizontal misalignment, fire risk control, fire spread suppression, and structural disaster resistance enhancement are integrated into the spatial layout logic, forming an inherently safe emergency power supply room architecture.

[0054] Please see Figure 1 and Figure 2 In one embodiment, by moving the main oil tank from the inside of the wall of the emergency power plant to the outside of the wall, and constructing a new wall to form an enclosed space for the main oil tank as the main oil tank room 20, the energy storage room and the power generation room are horizontally offset from each other.

[0055] Specifically, in this embodiment of the invention, the spatial relationship between the energy storage room and the power generation room is reconstructed by adopting a layout scheme that involves moving the main oil tank room 20 outward and vertically staggering it. That is, the main oil tank room 20, originally built into the power plant 10, is moved entirely outward to the outside of the plant, constructing an independent, enclosed enclosure structure to form a physically isolated fuel storage space, taking into account both anti-explosion pressure release and protection against external projectiles. The main oil tank room 20 and the diesel engine hall 30 are vertically staggered, allowing the oil tank room to be lowered, utilizing the vertical height difference to achieve unpressurized return oil by gravity flow. The independent, enclosed space is completely isolated by a high fire-resistant firewall of the main body of the power plant 10. This ensures that the load-bearing system of the diesel engine hall 30 avoids being directly above the oil tank room, reducing the risk of continuous collapse.

[0056] Please see Figure 2 In one embodiment, after the main oil tank room 20 is moved from the inner side of the wall of the main structure of the emergency power plant to the outer side, the depth of the raft foundation of the emergency power plant is reduced. That is, the raft foundation of the power plant 10 is raised as a whole, reducing the vertical distance between the energy storage room and the power generation room, so as to balance the increased horizontal distance between the energy storage room and the power generation room.

[0057] Specifically, in this embodiment of the invention, the main oil tank room 20 is moved entirely from the enclosed space inside the plant to the outside of the vertical wall, and the elevation of the raft foundation is raised simultaneously, achieving spatial reconstruction and functional synergy. After the relocation, the main oil tank room 20 is separated from the main plant structure via an independent raft foundation, and the raft foundation is raised to a corresponding height based on the translational distance, shortening its vertical distance from the diesel engine hall 30. This offsets the increase in oil circuit length caused by horizontal displacement, maintaining the fuel delivery pump's head parameters consistent with the original design, and ensuring stable fuel supply system efficiency.

[0058] More specifically, after the raft foundation of the main oil tank room 20 is raised, the horizontal extension of the fuel delivery pipeline is compensated for by vertical elevation difference, so that the equivalent length of the total oil circuit is consistent with the original plan, avoiding the problems caused by pump head readjustment. In addition, by converting the oil tank room inside the original power plant building 10 into an auxiliary equipment room, redundant space can be used to arrange fuel purification devices, electrical control cabinets and other equipment.

[0059] Furthermore, for existing factory buildings, the existing foundation can be reinforced when constructing the main oil tank room 20 on the outside of the wall. The raft foundation's elevation height can be adjusted using steel structure supports, avoiding large-scale earthwork excavation. Prefabricated modular pipes are used for oil pipeline connections, reducing on-site welding work. For new factory buildings, a raised raft foundation can be designed during the construction phase, allowing the main oil tank room 20 to be poured simultaneously with the main factory structure, ensuring spatial coordination between horizontal misalignment and vertical elevation. The relocation option utilizes open space outside the factory building, reducing the cost of deep foundation pit support for the basement. The raised raft foundation reduces earthwork excavation and concrete usage compared to traditional construction methods. Similarly, in addition to retaining the fire doors between the main oil tank room and auxiliary equipment rooms, a new independent escape route directly to the outside is added to the main oil tank room 20, ensuring safe evacuation of personnel.

[0060] Thus, by relocating the main oil tank room 20 outward and raising the raft foundation, the risk source isolation of the oil tank room is achieved with minimal civil engineering modifications, taking into account both construction feasibility and operation and maintenance economy, providing a reliable standardized technical path for upgrading the emergency power plant structure of existing and newly built nuclear power plants.

[0061] In one embodiment, the energy storage room is provided with independent fire compartments based on fire boundaries, and the fire doors of the fire boundaries meet the watertightness requirements.

[0062] Specifically, in this embodiment of the invention, the main oil tank room 20 is still divided into independent fire compartments, and the fire resistance rating is increased from 2 hours to 3 hours by enhancing the performance of the fire protection boundary, for example, by increasing the watertightness requirement of the fire doors. This improves the time available for fire fighting and rescue after a fire. In other words, the fire protection boundary based on the fire compartment is added to the existing fire protection measures in the main oil tank room 20. Thus, through the upgrade of fire resistance performance and the integration of watertightness function, the fire compartment is transformed from a passive isolation into an active prevention and control barrier, buying time for long-term suppression and rescue of fires in the main oil tank room 20.

[0063] Please see Figure 3 In one embodiment, the energy storage room is equipped with video surveillance 40 for monitoring combustibles and combustible gas monitoring.

[0064] Specifically, in this embodiment of the invention, intelligent monitoring for fuel leak point fires is added. This involves installing explosion-proof cameras with pan-tilt-zoom functionality in the main oil tank room 20 and connecting them to the video monitoring system 40. Areas at risk of oil leaks, such as tank flange connections and valve seals, are monitored closely. In the event of a fire, even a small one, it can be verified as early as possible. Simultaneously, the video monitoring system 40's personnel entry detection function facilitates monitoring of personnel in the main oil tank room 20 area during a fire.

[0065] Furthermore, the detection and alarm monitoring of combustible gases can be increased. Since diesel vapor is heavier than air, combustible gas detectors can be added in the near-ground areas of the main oil tank room, such as near valves and flanges, where leakage is likely. On-site alarms can be configured, and alarm signals can be sent to the fire control room or main control room. For example, the value of the first-level alarm signal can be ≤25% of the lower explosive limit of diesel vapor concentration, and the value of the second-level alarm signal can be ≤50% of the lower explosive limit of diesel vapor concentration, thereby controlling fire risks.

[0066] Please see Figure 3 In one embodiment, the fire-fighting equipment room and the energy storage room are located at the same height level of the emergency power plant structure, and the fire-fighting equipment room is provided with fire-fighting pipelines connecting to the outside of the emergency power plant structure.

[0067] Specifically, in this embodiment of the invention, an outdoor fire truck-specific interface is added to enhance the emergency response capability for fires in the main oil tank room 20. The fire-fighting interface 60 of its fire pipeline can be integrated into the water supply main of the fixed foam sprinkler system in the main oil tank room 20, located on the 0m floor of the plant for easy connection by fire trucks. It adopts a pump connector design, with antifreeze quick-connect fittings and self-sealing valves at the interface end to ensure plug-and-play functionality in extreme weather conditions and prevent media leakage. In this way, firefighters can quickly replenish foam concentrate or pressurize fire-fighting water through the interface, directly connecting to the plant's pre-buried pipe network, rapidly forming a highly efficient fire-fighting system, improving the continuous suppression capability for oil fires, and providing a foundation for professional fire rescue.

[0068] More specifically, such as Figure 3As shown, the framework of the diesel engine plant's fire protection system includes fire terminals located in the main oil tank room 20 area on the left (divided by dashed lines) and the foam tank room area on the right, connected by fire pipelines to form part of the fire protection system. The red markings in the main oil tank room 20 can be interpreted as newly added explosion-proof PTZ cameras, deployed there to monitor fuel leaks and early fire conditions in real time. They can also represent gas monitoring equipment. The red markings in the foam tank room can be interpreted as newly added fire interface 60s, such as foam liquid / fire water replenishment ports. Located on the 0m level outside the main oil tank area and connected to the outside of the plant, these interfaces are used to match quick-connect interfaces for outdoor fire trucks, supporting seamless access to external firefighting resources and enhancing fire suppression capabilities.

[0069] The present invention also provides an energy storage fire protection system for an emergency power plant, including an energy storage module and a fire protection module; the energy storage module converts the energy of the energy storage module into the energy of the power consumption end through a power generation module; the fire protection module monitors the fire information of the energy storage module through video surveillance and combustible gas monitoring, and is connected to the energy storage module and the outside of the emergency power plant.

[0070] Specifically, in this embodiment of the invention, the energy storage fire protection system of the emergency power plant comprises two core components: an energy storage module and a fire protection module. The energy storage module consists of a main oil tank, a transfer pump set, and an intelligent monitoring system. The fire protection module may include a fire equipment room, fire piping, a monitoring unit, and a remote control unit. An intelligent monitoring and active protection linkage mechanism is adopted to achieve closed-loop management of energy storage and fire safety. The operating status of the main oil tank is tracked in real time using pressure and temperature sensors and flow meters. The monitoring unit can identify fire characteristics through an AI video analysis system, forming a three-dimensional perception in conjunction with distributed combustible gas detectors. When initial fire signs appear, the system automatically initiates a response, for example, first triggering the inert gas covering device in the accident area to suppress combustion, and simultaneously opening the fire isolation valves of adjacent modules; at the same time, the remote control unit pushes three-dimensional positioning information to the plant's fire station and activates the plant's smoke exhaust skylights. This effectively prevents a chain reaction caused by fuel leakage.

[0071] In one embodiment, the fire protection module further includes a fire protection equipment room and fire protection pipelines. The fire protection module includes a fire protection terminal arranged in the fire protection equipment room, and the fire protection pipelines include pipeline terminals arranged outside the fire protection equipment room, the energy storage room, and the emergency power plant. The fire protection equipment room, the energy storage room, and the fire protection pipelines are configured according to the above-described emergency power plant structure.

[0072] Specifically, in this embodiment of the invention, the fire protection module constructs a multi-layered, progressive fire prevention and control system through the layout and linkage of fire protection equipment rooms and fire protection pipelines. The fire protection equipment room serves as the core control hub, and its internal fire protection terminals integrate functions such as the distribution, pressure regulation, and signal relay of fire protection media, such as fire-fighting foam in foam tanks. These terminals connect to various protected areas via a network formed by the fire protection pipelines. In the energy storage room, the nozzles at the pipeline terminals form a geometrical correspondence with fire risk areas. Fire protection pipelines connecting to the outside of the plant extend along the building's outline and are equipped with quick-connect interfaces for connection to municipal fire protection or fire truck systems. When the monitoring unit detects a fire signal, the fire protection terminal activates a media distribution strategy based on the risk level: for open flames in oil storage areas, it uses a composite spray of alcohol-resistant foam and water mist. Adjacent pipeline areas quickly form physical isolation barriers based on fire zoning. Furthermore, the fire protection module, in conjunction with the design of the emergency power supply plant structure, forms a triple guarantee from source suppression and regional isolation to overall protection, ensuring effective control of fire risks.

[0073] In summary, the emergency power plant structure and its energy storage fire protection system provided by this invention create an independent, enclosed space by relocating the main oil tank room and adding outdoor fire-fighting interfaces and access routes. This horizontally staggered and vertically layered arrangement of the main oil tank room and the diesel engine hall constructs physically isolated independent fire protection units. Gravity flow and short-distance pumping achieve a balance between fuel supply efficiency and safety. The spatial staggered arrangement reduces the threat to core equipment during fires, the external oil tank room improves fire rescue accessibility, and the intelligent monitoring and three-dimensional fire protection system shortens emergency response time. The multi-layered protective structure effectively suppresses the chain reaction of secondary disasters, providing a comprehensive solution for nuclear power plant emergency power systems that balances power supply, safety, and reliable operation.

[0074] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An emergency power supply plant structure, characterized in that, include: The power generation room is equipped with power generation equipment to meet emergency power needs; as well as An energy storage room is equipped with energy storage devices to meet the operation requirements of the power generation equipment. The energy storage room and the power generation room, to which the energy storage equipment and the power generation equipment belong respectively, are arranged in the emergency power plant in a staggered manner in the horizontal and vertical directions.

2. The emergency power supply plant structure according to claim 1, characterized in that, The emergency power plant is a diesel engine plant structure designed to meet emergency power needs for more than seven days of continuous power supply.

3. The emergency power supply plant structure according to claim 2, characterized in that, In the structure of the emergency power plant to which the diesel engine plant belongs, the energy storage room is the main oil tank room, the energy storage equipment is the main oil tank, the power generation room is the diesel engine hall, and the power generation equipment is a diesel generator set.

4. The emergency power supply plant structure according to claim 1, characterized in that, The emergency power plant structure also includes auxiliary equipment rooms and fire-fighting equipment rooms, and the emergency power plant structure forms an enclosed space to meet the needs of external disaster protection.

5. The emergency power supply plant structure according to claim 4, characterized in that, The emergency power plant structure also includes a basement level, and at least the energy storage room is located in the basement level of the emergency power plant structure.

6. The emergency power supply plant structure according to claim 3, characterized in that, In the structure of the emergency power plant, the main oil tank room is located below the diesel engine hall, so that unburned fuel and unpressurized leaking oil in the diesel engine hall can flow to the main oil tank by gravity, and the energy storage room and the power generation room are vertically offset from each other.

7. The emergency power supply plant structure according to claim 6, characterized in that, By moving the main oil tank from the inside of the wall of the emergency power plant to the outside of the wall, and constructing a new wall to form an enclosed space for the main oil tank as the main oil tank room, the energy storage room and the power generation room are horizontally offset from each other.

8. The emergency power supply plant structure according to claim 7, characterized in that, After the main oil tank room is moved from the inner side of the wall of the main structure of the emergency power plant to the outer side, the depth of the raft foundation of the emergency power plant is reduced.

9. The emergency power supply plant structure according to claim 1, characterized in that, The energy storage room is equipped with independent fire-resistant zones based on fire-resistant boundaries, and the fire doors of the fire-resistant boundaries meet the watertightness requirements.

10. The emergency power supply plant structure according to claim 1, characterized in that, The energy storage room is equipped with video surveillance for monitoring combustibles and combustible gas monitoring.

11. The emergency power supply plant structure according to claim 4, characterized in that, The fire-fighting equipment room and the energy storage room are located at the same height level of the emergency power plant structure, and a fire-fighting pipeline connecting the emergency power plant structure to the outside is installed in the fire-fighting equipment room.

12. An energy storage fire protection system for an emergency power plant, characterized in that, include: An energy storage module, which converts the energy stored in the energy storage module into energy at the power consumption end through a power generation module; as well as The fire protection module monitors the fire situation of the energy storage module through video surveillance and combustible gas monitoring, and is connected to the outside of the energy storage module and the emergency power plant.

13. The energy storage fire protection system according to claim 12, characterized in that, The fire protection module further includes a fire protection equipment room and fire protection pipelines. The fire protection module includes a fire protection terminal arranged in the fire protection equipment room. The fire protection pipelines include pipeline terminals arranged outside the fire protection equipment room, the energy storage room, and the emergency power plant. The fire protection equipment room, the energy storage room, and the fire protection pipelines are configured according to the emergency power plant structure as described in any one of claims 1-11.

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