Multi-point detection automatic fire alarm system for offshore booster station

Abstract

The invention relates to the technical field of automatic fire alarm systems, in particular to a multi-point detection automatic fire alarm system for an offshore booster station. Comprising a fire detection module, an alarm module, a fan master control module and a fire extinguishing device, the fire detection modules are arranged in a plurality of preset measuring point areas in the offshore booster station and are used for collecting fire information; the alarm module is in butt joint with the fire detection module and is used for receiving the fire information, giving an alarm according to the fire information and generating feedback information; the fan main control module is in butt joint with the alarm module and the fire extinguishing device and is used for receiving the feedback information and transmitting the feedback information to the fire extinguishing device; the fire detection module comprises a point type smoke detector, a point type temperature detector and a thermosensitive detection starting line; according to the invention, the accuracy of the automatic fire alarm system in fire detection, the reliability of the system and the flexibility of fire response can be improved, the false alarm rate and the missing alarm rate are reduced, and early detection, timely alarm and effective response of the fire are realized.

Description

Technical Field

[0001] This invention relates to the field of automatic fire alarm systems, and in particular to a multi-point detection automatic fire alarm system for offshore substations. Background Technology

[0002] Offshore substations, as core facilities of offshore wind farms, present significant fire safety challenges due to their unique geographical location and complex operating environment. A fire could not only result in substantial economic losses but also threaten the marine ecosystem and personnel safety, severely hindering the safe and stable operation and development of the offshore wind power industry. Faced with this challenge, how to comprehensively implement strict fire safety standards and regulations during the design, construction, and operation phases, and achieve scientific and intelligent fire prevention and control, has become a critical issue that urgently needs to be addressed. Automatic fire suppression systems can automatically detect the fire status of wind turbines and trigger alarms according to pre-defined strategies. If a fire occurs, the fire suppression devices will be automatically activated, ensuring the safe operation of the wind turbines. The fire suppression system can automatically detect, alarm, and extinguish fires, focusing on monitoring and protecting areas prone to fire, including cable joints, electrical cabinets, and hydraulic lubrication systems. It primarily monitors and alarms through ambient temperature and smoke detection. The use of automatic fire suppression systems can significantly reduce fire accidents in wind farms, improve the safety performance of wind turbines, and effectively prevent major fire accidents.

[0003] Existing technologies typically employ single-point detection for fire detection. Because detection occurs at only one location, the coverage area is relatively limited. This can lead to fires not being detected in time if they occur in areas not covered by the detector. Secondly, single-point detection systems rely on the reaction time of a single detector; if the detector is improperly positioned or has a slow response, it can cause delays in fire detection. Such delays can negatively impact initial fire control and personnel evacuation. Furthermore, the unique geographical location and complex working environment of offshore substations greatly increase the risk of safety hazards. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems in the prior art. This invention provides a multi-point detection automatic fire alarm system for offshore substations, which can improve the accuracy of automatic fire alarm systems in fire detection, the reliability of the system, the flexibility of fire response, and reduce false alarm rate and missed alarm rate, thus realizing early detection, timely alarm and effective response to fire.

[0005] To achieve the above objectives, the present invention employs the following technical solution: This invention provides a multi-point detection automatic fire alarm system for offshore substations, including a fire detection module, an alarm module, a fan main control module, and a fire extinguishing device; The fire detection module is deployed in multiple pre-set measuring point areas within the offshore substation to collect fire information. The alarm module interfaces with the fire detection module to receive fire information, trigger an alarm based on the fire information, and generate feedback information. The fan main control module interfaces with both the alarm module and the fire extinguishing device to receive feedback information and transmit it to the fire extinguishing device. The fire detection module includes a point-type smoke detector, a point-type heat detector, and a thermal detection activation line. The point-type smoke detector, point-type heat detector, and thermal detection activation line are all connected to the alarm module.

[0006] Preferably, the thermal detection start line is connected to the fire extinguishing device.

[0007] Preferably, the multi-point detection automatic fire alarm system further includes a monitoring platform; the monitoring platform is connected to the fire detection module, the alarm module, the fan main control module, and the fire extinguishing device respectively.

[0008] Preferably, the fire extinguishing device includes an ultrafine dry powder fire extinguishing device, an S-type thermal aerosol fire extinguishing device, a gas fire extinguishing device, and a miniature thermal aerosol fire extinguishing device; the ultrafine dry powder fire extinguishing device, the S-type thermal aerosol fire extinguishing device, the gas fire extinguishing device, and the miniature thermal aerosol fire extinguishing device are connected to the fan main control module.

[0009] Preferably, the fire extinguishing device further includes an exhaust fan; the exhaust fan is connected to the main control module of the fan.

[0010] Preferably, the measuring point area includes the engine room mechanical area, the engine room-to-tower electrical area, the ring main unit platform area, the diesel generator container area, and the power cable area.

[0011] Preferably, the mechanical area of ​​the cabin is equipped with a point-type smoke detector, a point-type heat detector, and a thermal detection start line.

[0012] Preferably, a thermal detection start-up line is provided in the cabin-to-tower electrical area.

[0013] Preferably, both the ring network cabinet platform area and the diesel generator container area are equipped with point-type smoke detectors and point-type temperature detectors.

[0014] Preferably, a point-type temperature sensor is installed in the power cable area.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention deploys fire detection modules in multiple pre-set measuring point areas within an offshore substation. The fire detection modules utilize point-type smoke detectors, point-type heat detectors, and thermal detection trigger wires to achieve multi-point detection, thereby improving the accuracy and reliability of the automatic fire alarm system in fire detection and enabling early and effective fire detection. The fire detection module collects fire information; the alarm module receives fire information, triggers an alarm based on the fire information, and generates feedback information; the fan main control module receives the feedback information and transmits it to the fire extinguishing device to extinguish the fire.

[0016] Furthermore, this invention selects different detectors and fire extinguishing devices for different areas of the offshore substation, making it suitable for different areas and protected objects. By selecting detectors and fire extinguishing devices suitable for each area, it can be ensured that these devices can still maintain stable operation in the harsh marine environment, thereby enhancing the safety performance of the entire offshore substation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a multi-point detection automatic fire alarm system for an offshore substation according to the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings: This invention provides a multi-point detection automatic fire alarm system for offshore substations, including a fire detection module, an alarm module, a fan main control module, and a fire extinguishing device; Fire detection modules are deployed at multiple pre-set monitoring points within the offshore substation to collect fire information. An alarm module interfaces with the fire detection modules to receive fire information, trigger alarms, and generate feedback information. The wind turbine main control module interfaces with both the alarm module and the fire extinguishing device to receive and transmit feedback information to the fire extinguishing device. This invention achieves comprehensive monitoring of the substation's internal environment by deploying fire detection modules at multiple pre-set monitoring points within the offshore substation, enabling timely detection of fire hazards. The alarm module interfaces with the fire detection module to receive fire information in real time and immediately triggers an alarm mechanism upon fire detection, alerting relevant personnel to take timely measures. The wind turbine main control module interfaces with both the alarm module and the fire extinguishing device to receive feedback information and intelligently activate the fire extinguishing device based on the fire situation.

[0026] The fire detection module includes a point-type smoke detector, a point-type heat detector, and a thermal detection activation line; the point-type smoke detector, the point-type heat detector, and the thermal detection activation line are all connected to the alarm module.

[0027] Point-type smoke detectors primarily detect smoke, triggering an alarm by detecting smoke particles generated in the early stages of a fire. When smoke particles enter the detector, they alter the properties or intensity of certain physical quantities, such as light scattering or ionization, which the detector detects and converts into an electrical signal. Suitable for the initial stages of a fire, they feature fast response and high sensitivity, quickly detecting even tiny smoke particles. Point-type heat detectors respond to temperature changes at a specific point or around a line within the detection range. They convert temperature changes into electrical signals, and when the temperature reaches or exceeds a set threshold, the detector issues an alarm. Suitable for locations requiring temperature detection, they respond quickly to temperature changes and issue alarms in the early stages of a fire. Thermal detector trigger wires are special conductive wires whose resistance changes with temperature. When the temperature reaches or exceeds a set threshold, the resistance of the thermal wire changes significantly, triggering an alarm mechanism. Suitable for locations requiring rapid response and efficient fire suppression, they feature high sensitivity and fast response.

[0028] The combined use of point-type smoke detectors, point-type heat detectors, and thermal detection trigger wires improves the accuracy and reliability of fire detection. Point-type smoke detectors are sensitive to smoke and are suitable for detecting initial fires; point-type heat detectors are sensitive to temperature changes and can respond promptly as the fire progresses; thermal detection trigger wires provide additional protection when the fire is large, ensuring that fire information is accurately captured.

[0029] The thermal detection start line is connected to the fire extinguishing device. The thermal detection start line is used to transmit an electrical pulse start signal to the fire extinguishing device. When the ambient temperature reaches the start temperature of the thermal detection start line, the fire extinguishing device is activated instantly, forming a total flooding fire extinguishing protection within the protection unit.

[0030] like Figure 1As shown, the multi-point detection automatic fire alarm system also includes a monitoring platform; the monitoring platform is connected to the fire detection module, alarm module, fan main control module, and fire extinguishing device respectively. The monitoring platform is used to receive and display the status information of the fire detection module, alarm module, fan main control module, and fire extinguishing device in real time. Through the graphical interface, operators can intuitively see the working status and alarm information of each detection element and fire extinguishing device. At the same time, the device also has data storage and query functions, which can record historical operating data and fault information, providing a reference for subsequent fault diagnosis and equipment maintenance; the device can also realize remote monitoring and management functions through network connection, making it convenient for firefighters to keep abreast of the dynamic situation at the fire scene.

[0031] The fire extinguishing device includes an ultrafine dry powder fire extinguishing device, an S-type thermal aerosol fire extinguishing device, a gas fire extinguishing device, and a miniature thermal aerosol fire extinguishing device; the ultrafine dry powder fire extinguishing device, the S-type thermal aerosol fire extinguishing device, the gas fire extinguishing device, and the miniature thermal aerosol fire extinguishing device are connected to the fan main control module.

[0032] Ultrafine dry powder fire extinguishing devices can instantly activate upon encountering a fire or fire signal, with extinguishing time typically less than 5 seconds. They do not require a sealed environment and are suitable for fully enclosed, semi-enclosed, or open outdoor spaces. These devices are simple, low-cost, require no dedicated storage room, occupy little space, and do not require power supplies or complex electrical control equipment and piping. S-type thermal aerosol fire extinguishing devices primarily store solid substances at atmospheric pressure. An electric detonator ignites the stored solid material, generating a large amount of S-type thermal aerosol smoke for fire extinguishing. The smoke is slightly low in toxicity, mainly consisting of N2 and some CO2, and does not produce harmful substances during extinguishing. As an atmospheric pressure discharge system, it does not cause airflow impact during extinguishing, has almost no destructive effect on the protected object, and its slow diffusion rate at atmospheric pressure makes it suitable for non-enclosed protected areas. Gaseous fire extinguishing devices primarily store liquid substances under high pressure and extinguish fires through high-pressure ejection. They offer rapid and effective extinguishing and are a high-quality extinguishing agent. However, it's important to pay attention to its concentration in the air; excessive concentrations can lead to toxicity and harm to humans. Its production and storage costs are relatively high, and piped fire extinguishing systems are complex to install, requiring a separate cylinder room, which takes up considerable space and incurs high maintenance costs. Miniature thermal aerosol fire extinguishing devices are small, available in various specifications, and reliably activated. The released extinguishing gas is not high-pressure gas and is non-toxic and harmless, posing no harm to equipment, the environment, or personnel. Each of these fire extinguishing devices has its own characteristics and is suitable for different fire scenarios and protected objects. When selecting and using them, a reasonable choice and configuration should be made based on the actual situation and needs.

[0033] The fire extinguishing device also includes a smoke exhaust fan; the smoke exhaust fan is connected to the main control module of the fan. When a fire occurs, the large amount of dense smoke produced by combustion can quickly fill the entire building or enclosed space, posing significant difficulties for personnel escape and fire rescue. The smoke exhaust fan can quickly extract smoke from the room, reducing smoke accumulation and thus ensuring unobstructed escape routes, improving escape efficiency and safety.

[0034] The measurement area includes the engine room mechanical area, the engine room-to-tower electrical area, the ring main unit platform area, the diesel generator container area, and the power cable area.

[0035] The engine room's mechanical area is equipped with point-type smoke detectors, point-type heat detectors, and thermal detection trigger lines, as well as an ultra-fine dry powder fire extinguishing system. The engine room's mechanical area is a fully enclosed structure with numerous electrical equipment and a relatively large space, making it suitable for the integration of ultra-fine dry powder fire extinguishing systems, point-type smoke detectors, and point-type heat detectors for early fire detection. When a point-type smoke detector or point-type heat detector is triggered, the alarm module receives the signal and sends a fire pre-alarm signal to the fan main control module. When the ambient temperature reaches the activation temperature of the thermal detection trigger line, the ultra-fine dry powder fire extinguishing system activates instantly, creating total flooding fire protection within the protected unit, while simultaneously collecting fire information and sending feedback to the alarm module.

[0036] The nacelle-tower base electrical area includes nacelle power cabinets, nacelle signal cabinets, nacelle circuit breaker cabinets, yaw drive cabinets, tower base control cabinets, and tower base converter cabinets (grid-connected cabinets, control cabinets, power cabinets), etc. The main type of fire that may occur in this area is electrical fire, with the fire concentrated inside the electrical cabinets. Rapidly extinguishing fires inside the electrical cabinets can minimize the risk of fire and reduce fire losses. Each cabinet within the electrical cabinet's fire protection system is separately zoned, requiring independent control, monitoring, and fire suppression. Considering the small and relatively sealed space inside the wind turbine electrical cabinets, this area is equipped with a thermal detection activation line and an S-type thermal aerosol automatic fire extinguishing device. When the ambient temperature reaches the activation temperature of the thermal detection line, the S-type thermal aerosol automatic fire extinguishing device activates instantly, forming a total flooding fire extinguishing protection within the protected unit, while simultaneously collecting fire information and sending feedback information to the alarm module.

[0037] Both the ring main unit platform area and the diesel generator container area are equipped with point-type smoke detectors and point-type heat detectors. Considering the high voltage inside the high-voltage cabinets in the ring main unit platform area, it is impossible to install detection and fire extinguishing devices inside. Therefore, multiple ultra-fine dry powder fire extinguishing devices are used around the high-voltage cabinets in the ring main unit platform area for localized fire extinguishing protection. The diesel generator container area has a fully enclosed structure, contains electrical equipment, and has relatively small space, making it suitable for use with thermal aerosol fire extinguishing devices or gas fire extinguishing devices.

[0038] The power cable area includes the entire mechanical space of the diesel generator, the control cabinet, and the fuel tank. Point-type temperature detectors are installed in this area. Considering that the space inside the control cabinet is small and relatively sealed, a thermal aerosol fire extinguishing device is used.

[0039] This invention discloses a multi-point detection automatic fire alarm system for offshore substations. This system monitors the real-time status of wind turbines and automatically extinguishes fires in the event of a fire, immediately sending an alarm signal to the wind turbine's main control module. It offers the following advantages: Multiple fire detection modules are installed in various areas within the offshore substation, improving the accuracy, reliability, and flexibility of the automatic fire alarm system, while reducing false alarm and missed alarm rates. This enables early fire detection, timely alarm, and effective response. The invention also incorporates an S-type thermal aerosol fire extinguishing device. This device produces no liquid or foam after spraying, leaves no residue, and the extinguishing agent does not damage electrical or mechanical components, requiring no cleaning. Furthermore, the multiple fire extinguishing devices within the offshore substation can completely flood protected areas such as the nacelle and electrical cabinets after spraying, eliminating any blind spots for fire hazards. Secondly, this invention selects different detectors and fire extinguishing devices for different areas of the offshore substation, which are suitable for different areas and protected objects. By selecting detectors and fire extinguishing devices suitable for each area, it can be ensured that these devices can still maintain stable operation in the harsh marine environment, thereby enhancing the safety performance of the entire offshore substation.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-point detection automatic fire alarm system for offshore substations, characterized in that, Includes fire detection module, alarm module, fan main control module and fire extinguishing device; The fire detection module is deployed in multiple pre-set measuring point areas within the offshore substation to collect fire information. The alarm module interfaces with the fire detection module to receive fire information, trigger an alarm based on the fire information, and generate feedback information. The fan main control module interfaces with both the alarm module and the fire extinguishing device to receive feedback information and transmit it to the fire extinguishing device. The fire detection module includes a point-type smoke detector, a point-type heat detector, and a thermal detection activation line. The point-type smoke detector, point-type heat detector, and thermal detection activation line are all connected to the alarm module.

2. The multi-point detection automatic fire alarm system for offshore substations according to claim 1, characterized in that, The thermal detection start-up line is connected to the fire extinguishing device.

3. A multi-point detection automatic fire alarm system for offshore substations according to claim 1, characterized in that, The multi-point detection automatic fire alarm system also includes a monitoring platform; the monitoring platform is connected to the fire detection module, the alarm module, the fan main control module and the fire extinguishing device respectively.

4. A multi-point detection automatic fire alarm system for offshore substations according to claim 1, characterized in that, The fire extinguishing device includes an ultrafine dry powder fire extinguishing device, an S-type thermal aerosol fire extinguishing device, a gas fire extinguishing device, and a miniature thermal aerosol fire extinguishing device; the ultrafine dry powder fire extinguishing device, the S-type thermal aerosol fire extinguishing device, the gas fire extinguishing device, and the miniature thermal aerosol fire extinguishing device are connected to the fan main control module.

5. A multi-point detection automatic fire alarm system for offshore substations according to claim 1, characterized in that, The fire extinguishing device also includes an exhaust fan; the exhaust fan is connected to the main control module of the fan.

6. A multi-point detection automatic fire alarm system for offshore substations according to claim 1, characterized in that, The measurement area includes the engine room mechanical area, the engine room-to-tower electrical area, the ring main unit platform area, the diesel generator container area, and the power cable area.

7. A multi-point detection automatic fire alarm system for offshore substations according to claim 1, characterized in that, The mechanical area of ​​the cabin is equipped with point-type smoke detectors, point-type heat detectors, and thermal detection start-up lines.

8. A multi-point detection automatic fire alarm system for offshore substations according to claim 1, characterized in that, The thermal detection start-up line is installed in the electrical area of ​​the engine room-to-tower base.

9. A multi-point detection automatic fire alarm system for offshore substations according to claim 1, characterized in that, Both the ring main unit platform area and the diesel generator container area are equipped with point-type smoke detectors and point-type heat detectors.

10. A multi-point detection automatic fire alarm system for offshore substations according to claim 1, characterized in that, A point-type temperature sensor is installed in the power cable area.

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