CN114307017A - Automatic fire extinguishing system for container ship - Google Patents
Automatic fire extinguishing system for container ship Download PDFInfo
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- CN114307017A CN114307017A CN202111523123.XA CN202111523123A CN114307017A CN 114307017 A CN114307017 A CN 114307017A CN 202111523123 A CN202111523123 A CN 202111523123A CN 114307017 A CN114307017 A CN 114307017A
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Abstract
The application relates to the technical field of fire detection, in particular to an automatic fire extinguishing system for a container ship. The automatic fire extinguishing system includes: the fire extinguishing agent type automatic fire extinguishing device comprises a double infrared flame detector, a control box, a smoke temperature sensing detector, a fire extinguishing agent type automatic fire extinguishing device, a water system automatic fire extinguishing device and an audible and visual alarm, wherein the double infrared flame detector is electrically connected with the double infrared flame detector; the double infrared flame detectors are used for monitoring fire alarm signals in the container ship in real time and sending the fire alarm signals to the control box; the control box is used for receiving the fire alarm signal, analyzing and processing the fire alarm signal and controlling the starting and stopping of the automatic fire extinguishing device; the smoke temperature detector is used for monitoring smoke and temperature data in the container ship; the fire extinguishing agent type automatic fire extinguishing apparatus is used for rapidly spraying a fire extinguishing agent when a fire occurs in a container ship, the water system automatic fire extinguishing apparatus comprises: water valve, solenoid valve, water course spraying pipe network and water smoke shower nozzle to solve the problem that the fire extinguishing efficiency is low among the prior art, detector sensitivity is low.
Description
Technical Field
The application relates to the technical field of fire detection, in particular to an automatic fire extinguishing system for a container ship.
Background
As the size and complexity of container ships increase, fire incidents occur around the world with many container ships. The international maritime insurance alliance is concerned about the fire upgrading of the container ship, and the international maritime organization calls for the common effort of all stakeholders to solve the problem that the fire fighting equipment of the existing container ship cannot effectively deal with the emergency fire incident.
At present, fire extinguishing systems applied to container ships are mainly divided into two types, and one type is a container with a fire extinguishing function. Carbon dioxide fire extinguishing agents, heptafluoropropane fire extinguishing agents, high-pressure water mist guns and the like are usually arranged in container ships for fire extinguishing, and the safety modes belong to passive safety protection facilities and cannot play a good role in protecting emergency fire accidents; the container ship with the engine can be used for placing fire extinguishing bombs to act on fire accidents caused by spontaneous combustion at high temperature, but the container ship cannot timely react on deflagration caused by low-ignition-point combustible gas and flash points and spontaneous combustion far away from a detonating rope of the fire extinguishing bombs, and the fire extinguishing efficiency is low.
Another type is a fire extinguishing system installed on a container, and the fire detectors used in the fire extinguishing system include smoke detectors (temperature detectors, flammable gas detectors), which detect a fire only when the temperature, smoke, or gas concentration reaches a certain threshold, and the detector sensitivity is low.
Disclosure of Invention
The application provides an automatic fire extinguishing system for container ship to solve the problem that extinguishing efficiency is low among the prior art, detector sensitivity is low.
The embodiment of the application is realized as follows:
the embodiment of the application provides an automatic fire extinguishing systems for container ship, includes: the fire extinguishing agent type automatic fire extinguishing device comprises a double infrared flame detector, a control box, a smoke temperature sensing detector, a fire extinguishing agent type automatic fire extinguishing device, a water system automatic fire extinguishing device and an audible and visual alarm, wherein the double infrared flame detector is electrically connected with the double infrared flame detector;
the double infrared flame detectors are used for monitoring fire alarm signals in the container ship in real time and sending the fire alarm signals to the control box, and the double infrared flame detectors are mounted at the top of a carriage of the container ship;
the control box is used for receiving the fire alarm signal, analyzing and processing the fire alarm signal and controlling the starting and stopping of the automatic fire extinguishing device, and is arranged in a monitoring room of the container ship;
the smoke temperature detector is used for monitoring smoke and temperature data in the container ship and is arranged on the containers in a partition mode according to the arrangement positions of the containers;
the fire extinguishing agent type automatic fire extinguishing device is used for rapidly spraying a fire extinguishing agent when a fire occurs in the container ship, and is arranged in a battle room of the container ship;
the water-based automatic fire extinguishing apparatus includes: the water spray device comprises a water valve, an electromagnetic valve, a water channel spray pipe network and a water spray nozzle, wherein one side of the water valve is connected with an external water source, the other side of the water valve is connected with the electromagnetic valve, and the electromagnetic valve is connected with the water spray nozzle through the water channel spray pipe network;
the audible and visual alarm is used for sending audible and visual alarm signals when fire occurs in the container ship.
In some embodiments, the control box comprises: the fire alarm system comprises a fire alarm signal acquisition unit, a logic control unit, a detection display communication unit, a fire extinguishing bottle driving unit, a display unit, a CAN communication unit and a power supply unit; one side of the detection display communication unit is connected with the fire alarm signal acquisition unit, the other side of the detection display communication unit is connected with the display unit, the detection display communication unit and the CAN communication unit form CAN communication connection, and the detection display communication unit is connected with the fire extinguishing bottle driving unit so as to realize full-channel detection from input of a fire alarm signal to output of a fire extinguishing bottle spray signal; one side of the logic control unit is connected with the fire alarm signal acquisition unit, and the other side of the logic control unit is connected with the fire extinguishing bottle driving signal unit, so that the fire extinguishing bottle is automatically triggered to act when a fire condition is found; the power supply unit is used for supplying power.
In some embodiments, the control box is used for receiving the fire alarm signals sent by the detectors, analyzing the fire alarm signals to judge whether fire occurs or not, and determining whether to start the automatic fire extinguishing device or not.
In some embodiments, the fire alarm signal acquisition unit includes: a double infrared flame detection fire alarm acquisition subunit and a smoke temperature detection fire alarm acquisition subunit.
In some embodiments, the fire extinguishing apparatus includes a fire extinguishing bottle storing a heptafluoropropane fire extinguishing agent and a fire extinguishing agent delivery line in which the fire extinguishing bottle is connected by a connecting pipe, the fire extinguishing bottle being installed at a position one-third of the length of the container.
In some embodiments, the fire extinguishing agent delivery pipeline comprises a main spraying pipeline and branch spraying pipelines, the branch spraying pipelines are equidistantly located on the main spraying pipeline, fire extinguishing agent nozzles are installed along one end of the branch spraying pipeline, and the fire extinguishing agent nozzles and the smoke temperature detector are arranged at intervals.
In some embodiments, the control box comprises a control panel on which a fire bottle button, a fire alarm button and a water mist fire extinguishing control button are disposed.
In some embodiments, the smoke temperature detector is provided with 8 groups, and each group of smoke temperature detector is provided with a number, so that the ignition position can be accurately judged according to the installation position of the smoke temperature detector.
In some embodiments, the water-based automatic fire extinguishing apparatus further includes a filter for filtering impurities.
The beneficial effects of the embodiment of the application include: the double infrared flame detectors with better reliability and response speed are selected to improve the sensitivity of the detectors; furthermore, fire alarm detection is carried out through a smoke temperature detector, and the production cost is reduced in an economic and practical combined mode; furthermore, the fire extinguishing agent type automatic fire extinguishing device and the water system automatic fire extinguishing device are combined to realize rapid fire extinguishing and improve fire extinguishing efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic diagram showing the components of an automatic fire suppression system for a container ship according to an embodiment of the present application;
FIG. 2 is a schematic diagram showing the components of a control box in the automatic fire extinguishing system for the container ship according to the embodiment of the present application;
fig. 3 is a schematic view showing the arrangement of a water channel spray pipe network in the automatic fire-extinguishing device according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Fig. 1 shows a schematic composition diagram of an automatic fire extinguishing system for a container ship according to an embodiment of the present application.
The application provides a self-extinguishing system for container ship, includes: the fire extinguishing agent type automatic fire extinguishing device comprises a double infrared flame detector, a control box, a smoke temperature sensing detector, a fire extinguishing agent type automatic fire extinguishing device, a water system automatic fire extinguishing device and an audible and visual alarm, wherein the double infrared flame detector is electrically connected with the double infrared flame detector; the double infrared flame detectors are used for monitoring fire alarm signals in the container ship in real time and sending the fire alarm signals to the control box, and the double infrared flame detectors are mounted at the top of a carriage of the container ship; the control box is used for receiving the fire alarm signal, analyzing and processing the fire alarm signal and controlling the starting and stopping of the automatic fire extinguishing device, and is arranged in a monitoring room of the container ship; the smoke temperature detector is used for monitoring smoke and temperature data in the container ship and is arranged on the containers in a partition mode according to the arrangement positions of the containers; the fire extinguishing agent type automatic fire extinguishing device is used for rapidly spraying a fire extinguishing agent when a fire occurs in the container ship, and is arranged in a battle room of the container ship; the water-based automatic fire extinguishing apparatus includes: the water spray device comprises a water valve, an electromagnetic valve, a water channel spray pipe network and a water spray nozzle, wherein one side of the water valve is connected with an external water source, the other side of the water valve is connected with the electromagnetic valve, and the electromagnetic valve is connected with the water spray nozzle through the water channel spray pipe network; the audible and visual alarm is used for sending audible and visual alarm signals when fire occurs in the container ship.
The double infrared flame detectors with good reliability and response speed are selected to improve the sensitivity of the detectors. Can send out fire alarm signal when two infrared flame detector detect flame, the singlechip passes through hardware interface output fire alarm signal, CAN send fire alarm signal for the control box through interior CAN bus simultaneously, and the control box starts audible-visual annunciator after receiving fire alarm signal and carries out audible-visual annunciation, and starts fire extinguishing agent formula automatic fire extinguishing device, reports self operating condition and fire alarm information through outer CAN bus simultaneously.
In some embodiments, the dual infrared flame detector is selected to have strong environmental adaptability and be of a miniaturized design. The double infrared flame detectors can detect the infrared radiation peak wave band in the flame so as to avoid misjudgment fire alarm caused by human interference factors. In addition, the double-infrared flame detector also has immunity to various interference sources such as sunlight, xenon lamps, high-pressure sodium lamps, fluorescent lamps, electric arcs and the like, so that the high reliability of the detector is ensured.
Wherein, the double infrared flame detectors are installed at a distance of about 1.5m from the ground to the top of the carriage, so that the aim of 'quick fire extinguishing' can be achieved only by high sensitivity. Experiments show that 500ml of gasoline is splashed on a simulated dummy or the ground, the height of the gasoline is 50 cm-100 cm, and the area is 0.1m2～0.3m2Of the flame of (1). The double infrared flame detector can continuously report a fire alarm within 5s under the condition that the distance between the double infrared flame detector and the flame is less than 1.5 m. When the instantaneous fire is large, the alarm time is less than 10 ms. The response optical field angle is a cone angle of +/-45 degrees, and the interior of a carriage can be effectively covered.
Wherein, the container top withstands the examination of marine environment temperature for a long time, and the vibrations and the impact of bringing are very frequent. The design of the double infrared flame detectors considers the complex working environment factors and optimizes the temperature change, impact and vibration. The casing of the double infrared flame detector is made of cast aluminum, so that the double infrared flame detector has high strength and strong anti-electromagnetic interference capability, and is not easy to deform due to vibration and impact. The metal shell can also effectively dissipate heat, and the service life of the electronic device is prolonged. The window adopts 5mm thickened quartz glass, so that internal devices can be protected from being damaged while flame spectrum is effectively transmitted.
Fig. 2 shows a schematic composition diagram of a control box in an automatic fire extinguishing system for a container ship according to an embodiment of the present application.
In some embodiments, the control box comprises: the fire alarm system comprises a fire alarm signal acquisition unit, a logic control unit, a detection display communication unit, a fire extinguishing bottle driving unit, a display unit, a CAN communication unit and a power supply unit; one side of the detection display communication unit is connected with the fire alarm signal acquisition unit, the other side of the detection display communication unit is connected with the display unit, the detection display communication unit and the CAN communication unit form CAN communication connection, and the detection display communication unit is connected with the fire extinguishing bottle driving unit so as to realize full-channel detection from input of a fire alarm signal to output of a fire extinguishing bottle spray signal; one side of the logic control unit is connected with the fire alarm signal acquisition unit, and the other side of the logic control unit is connected with the fire extinguishing bottle driving signal unit, so that the fire extinguishing bottle is automatically triggered to act when a fire condition is found; the power supply unit is used for supplying power.
In some embodiments, the fire alarm signal acquisition unit includes: a double infrared flame detection fire alarm acquisition subunit and a smoke temperature detection fire alarm acquisition subunit. In some embodiments, the control box is used for receiving the fire alarm signals sent by the detectors, analyzing the fire alarm signals to judge whether fire occurs or not, and determining whether to start the automatic fire extinguishing device or not.
In some embodiments, the fire extinguishing apparatus includes a fire extinguishing bottle storing a heptafluoropropane fire extinguishing agent and a fire extinguishing agent delivery line in which the fire extinguishing bottle is connected by a connecting pipe, the fire extinguishing bottle being installed at a position one-third of the length of the container.
The heptafluoropropane (HFC-227 ea/FM 200) fire extinguishing agent has the advantages of no color, no smell, low toxicity, no electric conduction and no pollution to protected objects, does not damage financial and precision facilities, can extinguish B, C-class fires and electrical fires at lower concentration and is suitable for the fire extinguishing conditions of container ships. Because the protective volume of the heptafluoropropane fire extinguishing agent per kilogram is 1.6m3(class A fire), this time with the volume of the internal space of the container at 63m3About 40kg of extinguishing agent is needed. In a 70L pipeline type fire extinguishing bottle, 40L of fire extinguishing agent (30L of high-pressure nitrogen gas) is filled, and the saturated liquid density of the heptafluoropropane fire extinguishing agent is 1.3g/cm3And 55kg of fire extinguishing agent can be filled in the 40-liter space, so that the loss of the fire extinguishing agent caused by insufficient tightness of the container is considered. Therefore, the 70L pipeline type fire extinguishing bottle can meet the effective fire extinguishing requirement of the container.
Wherein, the fire extinguishing bottle is filled with a proper amount of gas fire extinguishing agent heptafluoropropane and nitrogen with the pressure of 2.5 MPa-3 MPa, and the pressure of the nitrogen is utilized to convey the fire extinguishing agent from the fire extinguishing bottle to a fire extinguishing agent conveying pipeline and spray the fire extinguishing agent to the interior of the box body.
In some embodiments, the control box is a logic control core of the whole automatic fire extinguishing system, and mainly has the functions of monitoring fire alarm signals of the double infrared detectors and the smoke temperature detector, the state of the fire extinguishing bottle and the working condition of the device in real time, outputting a bottle spraying signal by the logic control part when a fire is found, and driving the fire extinguishing bottle to spray fire extinguishing agent under the action of the driving circuit to protect the container; if the fault is found, the fault is prompted to the operator at any time.
In some embodiments, the smoke temperature detector is provided with 8 groups, and each group of smoke temperature detector is provided with a number, so that the ignition position can be accurately judged according to the installation position of the smoke temperature detector.
In some embodiments, the fire alarm signal acquisition includes fire alarm signal acquisition by a dual infrared flame detector and fire alarm signal acquisition by a smoke temperature detector. The double-infrared flame detector is realized by adopting a window circuit, only responds to signals in the range of an upper threshold and a lower threshold, reduces the influence of external interference on the fire identification of the automatic fire extinguishing system, and improves the fire identification accuracy. A thermistor is arranged in the smoke temperature detector, and the smoke temperature detector senses that the ambient temperature reaches a threshold value and realizes temperature alarm; the darkroom is also arranged, the reflection and refraction of the detection light in the darkroom are detected, and when the smoke entering the darkroom reaches a certain concentration, the reflection and refraction directions of the light can be changed, so that the smoke concentration is judged, and the alarm is realized. The smoke temperature sensing detector is installed in a two-wire system, and is designed into a loop line in order to ensure reliability, when one part in the loop line is disconnected, the function of the detector is not influenced, and meanwhile, a fault can be reported. Wherein, the smoke temperature detector is arranged in a subarea mode according to the arrangement positions in the container. When each smoke temperature detector is installed, a serial number is arranged, and according to the installation position of each smoke temperature detector, the ignition position can be accurately judged. And on the control box, the arrangement indication of the indicator lamps is carried out according to the installation position of the detector.
In some embodiments, the logic control unit adopts a 32-bit ARM single chip LPC2194, and the chip has 16KB on-chip RAM, 256KB embedded Flash, 2 32-bit timers, 4-way 10-bit a/D converters, 9 external interrupts, 4-way CAN, a plurality of serial ports, 2 UARTs, I2C interfaces, 46 GPIOs (capable of bearing 5V voltage), and LQFP64 package. The chip is adopted to collect fire alarm signals, fire bottle states, emergency buttons and system working conditions, and fire bottle and fan driving signals are output according to usual/wartime logic, so that the logic control function of the system is realized. The chip has the advantages of rich resources, peripheral power supply, simple working circuit, small volume and low power consumption.
In some embodiments, the detection display communication unit adopts a 32-bit ARM single-chip microcomputer LPC2294 with the same resource as the LPC2194, wherein 4 channels of 10-bit a/D converters are increased to 8 channels, 46 channels of GPIOs (capable of bearing 5V voltage) are increased to 112 channels, and the LQFP144 is packaged, so that the acquisition of more analog signals and digital signals can be realized. Adopt this chip to gather fire alarm signal, fire-extinguishing bottle electric explosion tube, pressure switch signal, manual button signal, system's operating mode etc. realize according to the detection flow that follow fire alarm signal input, detect until the fire-extinguishing bottle spouts the full channel of bottle signal output.
The fire extinguishing bottle driving unit is realized by adopting a high-power PMOS (P-channel metal oxide semiconductor) tube, the maximum output current can reach 50A, and the device is packaged into a paster TO-252, so that the driving capability of the Darlington tube is stronger, the volume is smaller, and a control circuit is simpler compared with the traditional fire extinguishing Darlington tube. The fire extinguishing bottle is opened in an electric explosion tube mode, fire extinguishing agent is sprayed out through the siphon tube, and after receiving a starting signal of the control box, the fire extinguishing bottle is conveyed to a protection area through a fire extinguishing pipeline, wherein the opening time of a valve of the fire extinguishing bottle is less than or equal to 200ms, the spraying time of the fire extinguishing agent is less than 10s, and fire extinguishing can be completed within 2 s-5 s.
The automatic fire extinguishing system realizes a bus communication function through the CAN communication unit and CAN exchange information with external information according to a communication protocol.
In some embodiments, the power supply unit is provided with a pre-stage pre-voltage stabilizing circuit and a power supply filter circuit, and the power-on and power-off protection module is adopted to realize delayed power supply to a fire-extinguishing bottle driving circuit when a power supply fluctuates at the moment of starting a ship, so that the probability of mistaken bottle spraying of the fire-extinguishing bottle caused by storage battery fluctuation at the moment of starting a vehicle is reduced, and the power supply stability of the automatic fire-extinguishing system is improved; the wide-voltage input (+ 9 V.DC- +36 V.DC) power module is adopted to realize the stability of logic power supply, ensure the stable power supply of the logic circuit when the storage battery fluctuates, and avoid the false operation of the system caused by the resetting of the logic unit due to under-voltage and other reasons. The power supply circuit of each detector adopts a self-recovery fuse series power resistor form, the power supply circuit of the detector is cut off under the condition that the current of the power supply circuit is instantly increased, the normal power supply of the detector is automatically recovered after the power supply current is recovered to be normal, and the power resistor is connected in series, so that the power supply current of the detector can be reduced, and the maximum protection is provided for the detector.
In some embodiments, the fire extinguishing agent delivery pipeline comprises a main spraying pipeline and branch spraying pipelines, the branch spraying pipelines are equidistantly located on the main spraying pipeline, fire extinguishing agent nozzles are installed along one end of the branch spraying pipeline, and the fire extinguishing agent nozzles and the smoke temperature detector are arranged at intervals.
Wherein, the installing support for the fire extinguishing bottle is fixed at the battle room to be connected the fire extinguishing agent conveying pipeline who will install in the container ship through the connecting pipe fitting and the fire extinguishing bottle, and according to the size in carriage space, draw forth several branch road in order to do the branch pipeline that sprays from spraying the main line equidistance, and install the fire extinguishing agent shower nozzle respectively, be interval installation with smoke temperature sensing flame detector and fire extinguishing agent shower nozzle simultaneously. Meanwhile, the fire extinguishing bottle is welded at a third position along the length direction of the container through a mounting bracket according to the size of the 70L fire extinguishing bottle.
In some embodiments, the water-based automatic fire extinguishing apparatus further includes a filter for filtering impurities.
Wherein, aiming at the characteristic that water resources in the using environment of the container ship are easily obtained, the water system fire extinguishing automatic device is taken as a fire extinguishing means, and only the water system fire extinguishing automatic device can be used when the container ship is in an open cabin state. The water valve is connected with an external water source, the control box controls the starting and stopping of the electromagnetic valve, when the electromagnetic valve is opened, the external water source is connected with the high-pressure fine water mist spray head through a pipeline, and the fighting bucket cabin and the bomb storage cabin form water mist to carry out fire extinguishing operation. The water system automatic fire extinguishing device controls the electromagnetic valve and starts the water channel spraying pipe network to complete fire extinguishing operation so as to realize automatic spraying; meanwhile, the water mist fire extinguishing control button can be used for being started manually.
Fig. 3 is a schematic view showing the arrangement of a water channel spray pipe network in the automatic fire-extinguishing device according to the embodiment of the present invention.
In some embodiments, according to the fire extinguishing requirements of the structural characteristics of the container, the position of the protected object and the coverage area, and according to the requirements and the specifications of the national standard GB502198-2014, the water spray fire extinguishing device in the open type (the water spray nozzle is open type) automatic water spray fire extinguishing device is selected. The open nozzles are not provided with locking devices, and when a fire disaster occurs, all open nozzles in the protection area of the water system fire extinguishing device where the fire disaster is located discharge water together to extinguish the fire. The water spray fire extinguishing system consists of water supply equipment, a pipeline, an electromagnetic control water valve, a filter and a water spray nozzle, wherein the water spray nozzle decomposes water flow into fine water spray drops to extinguish fire under the action of certain pressure.
In some embodiments, due to the corrosive environment of the container, all parts of the water system automatic fire extinguishing device (i.e., the water spraying device) are made of 316 stainless steel materials, and the pipeline, the water spray nozzle, the water valve and the filter are connected through threads. The specific pipeline size design principle is as follows: according to the specification and model of the standard fire hydrant, the size of the container is 12m multiplied by 3m multiplied by 2.5m, and the fire hydrant with the specification of SN50 is adopted at the inlet of the water supply device, so that the fire extinguishing requirement can be met. In order to avoid blocking the pipeline, the water firstly passes through a filter to filter out impurities in the water after entering the water; then the electromagnetic valve is connected, and the control box controls the electromagnetic valve to be used as a switch of the pipeline system according to the fire condition. After the pipeline enters the second cabin body, the diameter of the pipeline is reduced according to flow loss, the fire extinguishing pipeline is arranged on the top of the cabin, and four fire extinguishing nozzles are uniformly arranged on two sides of the pipeline. After entering the third cabin body, the pipeline extends upwards to 1m from the cabin bottom, and under the height, the left side and the right side in the cabin are respectively provided with a fire extinguishing nozzle. The calculated supply pressure at the inlet of the automatic fire extinguishing system is 0.206MPa, and the water supply pressure of a common ship can meet the requirement of the water system automatic fire extinguishing device.
In some embodiments, the control box comprises a control panel on which a fire bottle button, a fire alarm button and a water mist fire extinguishing control button are disposed. The working modes of the automatic fire extinguishing system are automatic/semi-automatic, when the detector detects flame in the automatic mode, the fire extinguishing agent conveying pipeline is directly driven to extinguish fire, and the audible and visual alarm is started to warn workers. Whether the fire extinguishing operation is carried out is judged by the staff according to the situation under the semi-automatic working mode, and if necessary, the emergency button (such as a fire extinguishing bottle button and a water mist fire extinguishing control button) is pressed to carry out the fire extinguishing operation.
Wherein, with control box fixed mounting in the control room to the staff operates and can look over the status information of automatic fire extinguishing systems in real time. The control box shell is designed in a cast aluminum structure mode, and the requirements of mechanical strength, electromagnetic compatibility, sealing performance, economy and the like are met. The fire extinguishing bottle button is arranged, so that the fire extinguishing bottle can be respectively started to extinguish fire through the manual button in emergency; wherein the manual button for controlling the gas fire extinguisher bottle also has a power-off starting function. Meanwhile, according to the installation positions of the smoke temperature detectors, the control box can accurately indicate the fire alarm position when a fire is found, and gives out acousto-optic alarm, and the alarm can be cancelled through the alarm cancelling button on the panel of the control box. The water mist fire extinguishing control button is used for realizing manual opening or closing of the water mist fire extinguishing.
Reference throughout this specification to "embodiments," "some embodiments," "one embodiment," or "an embodiment," etc., means that a particular feature, component, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in at least one other embodiment," or "in an embodiment," or the like, throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, components, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, without limitation, a particular feature, component, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with a feature, component, or characteristic of one or more other embodiments. Such modifications and variations are intended to be included within the scope of the present application.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An automatic fire extinguishing system for a container ship, comprising: the fire extinguishing agent type automatic fire extinguishing device comprises a double infrared flame detector, a control box, a smoke temperature sensing detector, a fire extinguishing agent type automatic fire extinguishing device, a water system automatic fire extinguishing device and an audible and visual alarm, wherein the double infrared flame detector is electrically connected with the double infrared flame detector;
the double infrared flame detectors are used for monitoring fire alarm signals in the container ship in real time and sending the fire alarm signals to the control box, and the double infrared flame detectors are mounted at the top of a carriage of the container ship;
the control box is used for receiving the fire alarm signal, analyzing and processing the fire alarm signal and controlling the starting and stopping of the automatic fire extinguishing device, and is arranged in a monitoring room of the container ship;
the smoke temperature detector is used for monitoring smoke and temperature data in the container ship and is arranged on the containers in a partition mode according to the arrangement positions of the containers;
the fire extinguishing agent type automatic fire extinguishing device is used for rapidly spraying a fire extinguishing agent when a fire occurs in the container ship, and is arranged in a battle room of the container ship;
the water-based automatic fire extinguishing apparatus includes: the water spray device comprises a water valve, an electromagnetic valve, a water channel spray pipe network and a water spray nozzle, wherein one side of the water valve is connected with an external water source, the other side of the water valve is connected with the electromagnetic valve, and the electromagnetic valve is connected with the water spray nozzle through the water channel spray pipe network;
the audible and visual alarm is used for sending audible and visual alarm signals when fire occurs in the container ship.
2. An automatic fire extinguishing system for container ships according to claim 1, characterized in that the control box comprises: the fire alarm system comprises a fire alarm signal acquisition unit, a logic control unit, a detection display communication unit, a fire extinguishing bottle driving unit, a display unit, a CAN communication unit and a power supply unit; one side of the detection display communication unit is connected with the fire alarm signal acquisition unit, the other side of the detection display communication unit is connected with the display unit, the detection display communication unit and the CAN communication unit form CAN communication connection, and the detection display communication unit is connected with the fire extinguishing bottle driving unit so as to realize full-channel detection from input of a fire alarm signal to output of a fire extinguishing bottle spray signal; one side of the logic control unit is connected with the fire alarm signal acquisition unit, and the other side of the logic control unit is connected with the fire extinguishing bottle driving signal unit, so that the fire extinguishing bottle is automatically triggered to act when a fire condition is found; the power supply unit is used for supplying power.
3. The automatic fire extinguishing system for a container ship according to claim 1, wherein the control box is configured to receive the fire alarm signals from the detectors, analyze the fire alarm signals to determine whether a fire occurs, and determine whether to activate the automatic fire extinguishing apparatus.
4. An automatic fire extinguishing system for container ships according to claim 2, wherein the fire alarm signal collecting unit comprises: a double infrared flame detection fire alarm acquisition subunit and a smoke temperature detection fire alarm acquisition subunit.
5. An automatic fire extinguishing system for container ships according to claim 1, wherein the fire extinguishing agent type automatic fire extinguishing apparatus comprises a fire extinguishing bottle storing a heptafluoropropane fire extinguishing agent and a fire extinguishing agent delivery pipe in which the fire extinguishing bottle is connected by a connecting pipe, the fire extinguishing bottle being installed at a position one third along the length of the container.
6. The automatic fire extinguishing system for the container ship according to claim 5, wherein the fire extinguishing agent delivery pipeline comprises a main spraying pipeline and branch spraying pipelines, the branch spraying pipelines are equidistantly located on the main spraying pipeline, fire extinguishing agent nozzles are installed along one end of the branch spraying pipeline, and the fire extinguishing agent nozzles and the smoke temperature sensing detector are arranged at intervals.
7. An automatic fire extinguishing system for container ships according to claim 1, characterized in that the control box comprises a control panel on which a fire extinguisher bottle button, a fire alarm button and a water mist fire extinguishing control button are arranged.
8. An automatic fire extinguishing system for container ships according to claim 1, wherein the smoke temperature-sensitive detectors are provided in 8 groups, and each group of smoke temperature-sensitive detectors is provided with a number so that a fire position is accurately judged according to the installation position of the smoke temperature-sensitive detectors.
9. An automatic fire extinguishing system for container ships according to claim 1, wherein the water-based automatic fire extinguishing apparatus further comprises a filter for filtering foreign materials.
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Application publication date: 20220412 |