JP2002269651A - Fire detection system in ship and local fire extinguishing system in ship engine room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide fire detection in a ship capable of certainly and rapidly detecting a fire occurring in a space inside an engine room complicatedly disposed with equipment such as an engine, and specifying a fire occurrence section. SOLUTION: In this fire detection system in the ship, the space inside the engine room of the ship complicatedly disposed with the engine and its peripheral equipment is divided into prescribed sections, a fire sensor is disposed in each the prescribed section, and each the fire sensor individually detects the fire occurring in each the prescribed section to decide the fire. The fire sensor comprises an ultraviolet sensor 13 outputting a fire signal by ultraviolet rays directly or indirectly incident on the ultraviolet sensor 13 from a flame of the fire, and an infrared sensor 15 outputting a fire signal by infrared rays directly incident on the infrared sensor 15 from the fire flame. The fire signals from the fire sensor are inputted to a fire monitor control panel 17. The fire monitor control panel 17 decides by the fire signal from the ultraviolet sensor 13 that a first information fire occurs, decides the fire occurs when the fire signal from the infrared sensor 15 continues for a prescribed time, and specifies the fire occurrence section by the fire signals from the sensors 13, 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fire detection system in a ship and a local fire suppression system in a ship engine room. More specifically, the present invention divides the engine room space of a ship in which an engine and its peripheral equipment are arranged in a complicated manner into predetermined areas, arranges a fire detector in each predetermined area, and generates a fire generated in each predetermined area. The present invention relates to a fire detection system for a ship in which a fire can be distinguished by individually detecting the fire by the fire detectors. In addition, the present invention divides the space in the engine room of the ship into predetermined sections, and is configured to be able to jet the fire extinguisher individually and selectively for each of the sections, and the fire occurrence area is specified by the fire detection system in the ship. The present invention relates to a local fire extinguishing system in a ship engine room that can select a predetermined section according to the specified fire occurrence area and discharge a fire extinguisher into the selected section to extinguish a fire.

[0002]

2. Description of the Related Art Generally, in various ships, engines and other equipment are installed in an engine room, and since such equipment handles flammable substances such as oil, the engine and other equipment and surroundings are used. It is well known that fires are likely to occur. Therefore, in a conventional ship, the presence or absence of a fire in a place where a fire easily occurs in the engine room is monitored by a fire detection system, and if a fire occurs, a local fire suppression system is activated by a fire suppression command signal from the fire detection system in the ship. When it was started, water was sprayed from the extremely small diameter nozzle under pressure to ensure that the fire was extinguished early in the initial fire extinguishing.

As a fire detector used in a fire detection system on a ship, SOLAS2 is used.
-Medium-type fire detectors such as heat detectors or smoke detectors that have obtained type approval that meet the detector functional requirements described in Chapter 2 (Local fire extinguishing systems required for Class A engine areas)
They were selectively used depending on the situation of the place where they were installed.
This heat detector is a device that outputs a fire signal when heat transfer by a medium having thermal energy such as air, water vapor, or gas changes the temperature of a detection unit to a certain state and reaches a certain state. The smoke detector outputs a fire signal when a change in transmittance due to a floating medium such as smoke, oily smoke, or vapor has reached a predetermined state. In essence, these sensors output a fire signal when a fire sensing element transmitted by a predetermined medium reaches a predetermined value. Both of these detectors require the presence of a substance (fire sensing element),
The substance (fire sensing element) serves as a medium for the fire and reaches the sensing section to detect the fire.

[0004] Therefore, in order to detect a fire in each of the above-mentioned fire detectors, it is necessary to move the medium, and it is impossible to detect the fire until the fire has progressed to some extent. In addition, since these media may be swept away by airflow, even if a fire is detected, the detection range of the detected fire detector cannot be determined to be a fire. Therefore, in the conventional fire detection system for ships, first, an alarm is issued to notify the crew of the occurrence of the fire, the crew confirms the location of the fire source and the scale of the fire, and then conducts fire extinguishing activities in the event of a fire inside the ship. In accordance with the command system, it is decided whether to conduct an initial fire extinguishing operation with a fire extinguisher, water extinguishing using the main fire pump, or fire extinguishing for the entire engine room. I was going.

[0005]

However, in a conventional fire detection system for a ship using the above-described medium type sensor, a medium (fire detection element) indicating a fire phenomenon is provided in the sensing portion of each of the sensors. ) Must reach a predetermined amount or more, and if the degree of the fire has progressed considerably, it will not operate unless the fire has progressed considerably.

In order to solve such inconveniences, it is conceivable to increase the sensitivity of each of the above-mentioned sensors. However, if the sensitivity is increased, the operating state of the engine in the engine room and the operation of peripheral devices thereof are increased. Because it is activated immediately due to changes in the atmosphere in the engine room, such as a change in state, it is not possible to determine whether it is a fire or a false alarm, and eventually the actual fire spreads while checking for a fire or false alarm There were inconveniences such as. Further, according to the above-described conventional fire detection system for a ship, the medium (fire detection element) sensed by the medium-type sensor is caused to flow by the air flow of the supply and exhaust air in the engine room, and the medium other than the fire detector in the fire occurrence area. Detector did not work, and the location of the fire source could not be specified, resulting in the following inconveniences.

(1) Due to the delay in finding the initial fire, the fire extinguishing system for the initial fire extinguishing cannot be used or the fire pump cannot extinguish the fire in many cases. (2) The fire extinguishing system emits a fire extinguishing agent that extinguishes the entire protected area, and the main propulsion device, auxiliary engine for power generation,
This could lead to damage to auxiliary equipment and electrical equipment, causing the ship to dead ship, making navigation impossible, and significantly impairing the safety of the ship. (3) In addition, depending on the extinguishing agent (for example, carbon dioxide, nitrogen fluoride) released into the engine room, it may affect human life. In addition, in the engine room of the ship, engines and other equipment are erected in a complicated state, so that fires that occur under the engines and other equipment are blocked by the engines and equipment. There was also a drawback that the discovery of fire was delayed.

A first object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to surely and promptly start a fire that occurs in a space where an engine and other equipment are arranged in a complicated manner such as an engine room. An object of the present invention is to provide a fire detection system for a ship that can detect a fire and reliably identify a fire occurrence area. A second object of the present invention is to divide the space in the engine room into predetermined sections, and to allow the fire extinguishing agent to be discharged individually and selectively to each predetermined section, according to the fire area specified by the fire detection system in the ship. It is an object of the present invention to provide a local fire extinguishing system in a marine engine room, in which a fire extinguishing agent is discharged to a predetermined section to extinguish a fire only in the section.

[0009]

In order to achieve the first object, a fire detection system for a ship according to the present invention according to the first aspect of the present invention comprises an engine room of a ship in which an engine and its peripheral devices are arranged in a complicated manner. A fire detection system for a ship, which divides a space into predetermined areas, arranges fire detectors in each predetermined area, and detects a fire occurring in each predetermined area individually by each of the fire detectors to determine a fire. The fire detector outputs a fire signal when ultraviolet light directly or indirectly incident from a flame of the fire generated in the predetermined area reaches a predetermined level; An infrared detector that outputs a fire signal when the infrared light directly incident from the flame of the fire that has occurred inside the fire reaches a predetermined level. Determining that a fire has occurred when the fire signal from the infrared sensor has continued for a predetermined period of time, and that a fire monitoring control panel has been provided for specifying the fire occurrence area based on the fire signal from those sensors. It is a feature. According to a second aspect of the present invention, in the fire detection system for a ship according to the first aspect of the present invention, a medium type fire detecting a fire signal when a fire sensing element transmitted by a predetermined medium reaches a certain state. The infrared detector and the ultraviolet detector are added to the detector, and the fire monitoring control panel determines the first report fire based on the fire signal from the ultraviolet detector, and the fire signal from the infrared detector continues for a predetermined time. Then, it is judged as a second report fire and enters the fire monitoring state. If there is a fire signal from the medium type fire detector, it is judged that a fire has occurred, and the fire is determined based on the fire signal from these fire detectors. It is characterized by specifying an occurrence area. The invention according to claim 3 of the present application is the fire detection system for a ship according to claim 1 of the present application,
In addition to the infrared sensor and the ultraviolet sensor, an imaging device that can monitor an area smaller than the infrared sensing area of the infrared sensor and captures the area via an infrared filter is provided for each infrared sensor or ultraviolet sensor. The fire monitoring control panel determines that the fire signal from the ultraviolet detector is a first report fire, and determines that a fire has occurred due to the second report fire when the fire signal from the infrared detector continues for a predetermined time. In addition, a fire occurrence area is specified by performing image processing on infrared image data from the imaging device. According to a fourth aspect of the present invention, in the fire detection system for a ship according to the third aspect of the present invention, the fire monitoring control panel includes a screen display device, and displays infrared image data from the imaging device on the screen display device. It is characterized by being able to. Further, in order to achieve the second object, the invention according to claim 5 of the present application is directed to a local fire extinguishing system in a ship engine room, a fire detection system for a ship according to any one of claims 1, 2, 3, and 4 above. In, the fire extinguisher discharge system configured to divide the space in the engine room of the ship into predetermined sections, and to be able to individually and selectively jet the fire extinguishing agent for each section,
A fire extinguisher supply system capable of supplying a fire extinguisher to the fire extinguisher discharge system, and the fire detection system gives a fire extinguisher discharge command to the fire extinguisher discharge system of the predetermined section corresponding to the specified fire occurrence area, A fire extinguishing agent supply command is output to a fire extinguishing agent supply system.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. [First Embodiment] FIGS. 1 to 5 are views for explaining a first embodiment of the present invention. Here, FIG.
It is a figure showing the local fire extinguishing system in the ship engine room to which the fire detection system in the ship concerning a 1st embodiment of the present invention is applied. FIG. 2 is a plan view showing the vicinity of a protected area in a local fire extinguishing system in a ship engine room to which the fire detection system for a ship according to the first embodiment of the present invention is applied. FIG. 3 is a front view showing the vicinity of the protected area. FIG. 4 is an explanatory diagram of a sensing area of a sensor used in the fire detection system in the ship according to the embodiment.

(Description of Local Fire Extinguishing System in Ship Engine Room) First, a local fire extinguishing system in a ship engine room to which the first embodiment of the present invention is applied will be described.
In these figures, a local fire extinguishing system 1 in a ship engine room includes a protected area 3 consisting of an internal space of a ship engine room.
Fire extinguishing agent discharge system 5 that can selectively spray a fire extinguishing agent (eg, water) onto a predetermined section obtained by dividing the inside of the inside into a predetermined area.
And a supply system 7 that can supply water as a fire extinguishing agent to the fire extinguishing agent discharge system 5.

More specifically, the fire extinguisher discharge system 5 divides the protected area 3 formed of the space in the engine room of the ship into predetermined sections, and individually and selectively supplies the fire extinguisher to each section. It is configured to be able to squirt, and is configured as follows. That is, the extinguishing agent discharge system 5
Are nozzle pipes 53 provided with check valves 51 and 52, nozzle pipes 56 provided with check valves 54 and 55, and nozzles 57a and 57 provided at predetermined intervals in the nozzle pipe 53.
b, 57c, nozzles 58a, 58b, 58c provided at predetermined intervals in the nozzle pipe 54, a supply pipe 60 connected to one end of the nozzle pipes 53, 56 and provided with a division valve 59, And a supply pipe 62 connected to the other ends of the pipes 53 and 56 and provided with a partition valve 61.

The supply pipe 60 and the supply pipe 62 communicate with a single main pipe 70. The nozzle 57a,
57b, 57c and nozzles 58a, 58b, 58c
Is a fire extinguisher (in this embodiment, in a predetermined section formed by dividing the protected area 3 formed by the internal space of the engine room).
Water) can be ejected individually and selectively.
The fire extinguishing agent (water) supplied from the supply pipe 60 is supplied to the nozzles 57b and 58b through the check valves 51 and 54, but does not flow to the supply pipe 62 side by the check valves 52 and 55. It has become. Similarly, the fire extinguishing agent (water) supplied from the supply pipe 61 is supplied to the nozzles 57b and 58b through the check valves 52 and 55.
At 54, it does not flow to the supply pipe 61 side.

The supply system 7 includes a pump 72 that draws in a fire extinguishing agent (water) from a water tank 71, which is a fire extinguishing agent tank, and supplies it to the main pipeline 70, an electric motor 73 that rotates the pump 72, and an electric motor 73 And a pump starting board 74 for controlling the driving of the pump. In addition, water can be supplied to the water tank 71 from a fresh water tank 75 with a hull via an electric pump 76. In addition, water tank 7
1, a liquid level gauge 77 and a liquid level sensor 78 are provided. The liquid level sensor 78 is electrically connected to the pump starting board 74, and the water level is set to “L” inside the water tank 71.
H, LF, and LL can be detected. Liquid level sensor 7 on the freshwater tank 75 with hull
9 is provided to detect a shortage of water in the fresh water tank 75 with a hull.

As shown in FIGS. 2 and 3, the protected area 3 formed by the interior space of the engine room of the ship is divided into predetermined sections, and the nozzles 57a, 57b, 57c and the nozzles 58a, 58b, 58c Thus, the fire extinguisher can be ejected individually and selectively for each section. In the protected area 3 inside the engine room, engines (other devices) 60,...

(Fire Detection System on Ship) Next, a fire detection system on a ship according to the first embodiment of the present invention will be described. The fire detection system 11 for a ship according to the first embodiment of the present invention can be roughly classified into an ultraviolet detector 13 that outputs a fire signal when the level of the incident ultraviolet light exceeds a predetermined level, and an incident light. Infrared detector 15 when the infrared level exceeds a predetermined level
And a fire monitoring control panel 17 which detects a fire occurrence based on the fire signals from the sensors 13 and 15 and specifies a fire area.

More specifically, the ultraviolet detector 13
Is a sensor for outputting a fire signal when a predetermined level of ultraviolet light directly or directly reflected from a flame of a fire generated in an ultraviolet sensing area in the space of the engine room or reflected from a wall or equipment reaches a predetermined level. It is a vessel. This UV detector 1
Numeral 3 is capable of receiving a direct wave of ultraviolet rays having a wavelength of, for example, 0.2 [μm] or a reflected wave from a steel wall in an engine room, equipment, or the like, emitted from a flame (fire source) at the time of fire. Further, the ultraviolet detector 13 may be set to the maximum sensitivity.

The infrared detector 15 outputs a fire signal when an infrared ray directly incident from a fire flame generated in the infrared monitoring area is narrower than the ultraviolet monitoring area in the space and reaches a predetermined level. It is a vessel. The infrared detector 15 transmits, for example, a wavelength of 4.3 [μ] from a fire source.
m], which receives infrared direct waves due to carbon dioxide resonance radiation and outputs a fire signal when the level reaches a predetermined level.

The ultraviolet detector 13 and the infrared detector 15 are integrally formed. UV detector 13
As shown in FIG. 4, an ultraviolet monitoring area AV consisting of a cone having a bottom surface with a diameter of about 20 [m] centered on the center line C, approximately 10 [m] below the ultraviolet detector 13, is shown in FIG. Have. In addition, as shown in FIG. 4, the infrared ray 15 has a length of about 10 [m] from the infrared detector 15.
Below, it has an infrared monitoring area AS consisting of a cone with a bottom of about 10 [m] about the center line C. More specifically, the ultraviolet detector 13 having a wide detection angle of incidence receives ultraviolet electromagnetic waves and can detect a fire at an early stage of fire occurrence. In the infrared detector 15, as the second report fire, a detection angle of about 60% is set as compared with the detection incident angle of the ultraviolet ray. The infrared detector 15 receives the direct wave of the infrared electromagnetic wave which goes straight radially by the carbon dioxide resonance radiation generated from the flame, and prevents erroneous detection due to the fluctuation of the flame.

As shown in FIG. 2, the ultraviolet detector 13A and the infrared detector 15A are arranged at a point AA in the protected area 3. The ultraviolet sensor 13B and the infrared sensor 15B are arranged at the protected area 3 at the point BB.
The infrared sensing area WA of the infrared sensor 15A and the sensing area WB of the infrared sensor 15B are arranged so as to slightly overlap in the horizontal direction as shown in FIG. Are located. The ultraviolet sensor 13 and the infrared sensor 15 are electrically connected to a fire monitoring control panel 17 via a wiring 19. The fire monitoring control panel 17 includes a partition valve 59 for the supply pipe 60,
The division valve 61 of the supply pipe 62 is electrically connected,
The division valves 59 and 61 are independently opened and closed by commands from the fire monitoring control panel 17.

In the protected area 3 inside the engine room, there are provided a visual and audible alarm 21 and a machine-side operation push button 23, which are electrically connected to the fire monitoring control panel 17. . Further, a fire alarm panel 25 is provided on a bridge or the like, and the fire alarm panel 25 is electrically connected to the fire monitoring control panel 17 and can emit an audible and visible alarm. Further, the fire monitoring control panel 17 is electrically connected to the pump starting panel 74,
When a fire is detected, the pump start signal can be sent to the pump start board 74.

The fire monitoring control panel 17 includes, for example, a micro-processing unit (MPU), a main memory (RAM),
It comprises a storage device (ROM) for storing programs and the like, a signal processing device such as an I / F for exchanging signals with the outside, and other circuits. This fire monitoring control panel 1
7 determines that the fire signal from the ultraviolet detector 13 is the first report fire, and determines that the fire signal from the infrared detector 15 is the second report fire when the fire signal continues for a predetermined time. It is configured so that a fire occurrence can be notified based on the result and a fire occurrence area can be specified. A fire detection system in a ship and a local fire extinguishing system in a ship engine room configured as described above will be described with reference to FIGS. Here, FIG.
5 is a flowchart for explaining the operation of the fire monitoring control panel of the fire detection system in the ship according to the first embodiment of the present invention.

(In the case of a fire source FA) For example, it is assumed that a fire source FA has occurred at a point 100 in FIG. Then, since the ultraviolet ray detector 13A has the fire source FA in the ultraviolet ray detection area (shown by a straight line in the figure), the ultraviolet ray is directly incident from the fire source FA. Note that the ultraviolet ray detector 13B does not detect the fire source FA because the fire source FA is not in the ultraviolet ray sensing area of the ultraviolet ray detector 13B as shown by the dotted line j in FIG. In addition, the infrared detector 15A also directly receives infrared light because the fire source FA is present in the infrared detection area (shown by a dotted line in the figure).

Each of the ultraviolet detector 13A and the infrared detector 15A outputs a fire signal when detecting a predetermined level. This fire signal is sent to the fire monitoring and control panel 17
Is input to The fire monitoring control panel 17 determines that the fire is the first report fire based on the fire signal from the ultraviolet detector 13A (step 201; YES), and the infrared detector 15A
Is determined to be the second report fire when the fire signal has been transmitted for a predetermined time (step 202; YES), the occurrence of a fire is notified and the fire occurrence area is specified based on the results of the two determinations (step 203). In this case, the fire monitoring control panel 17 specifies the left half of the protected area 3 in FIG.

The fire monitoring and control panel 17 immediately causes the visible and audible alarm 21 to issue an alarm when a fire has occurred, and causes the fire alarm panel 25 to issue an alarm when a fire has occurred and to display the location of the fire (step). 203). Here, for example, if the crew operates the machine-side operation push button 23, the fire monitoring control panel 17 gives a pump start signal to the pump start panel 74 based on the operation signal and the fire signal, and the partition valve 59. Is output (Step 204; YES-Step 205). Then, the electric motor 73 is activated to drive the pump 72 to draw water from the water tank 71 by the water tank 71, and to draw the nozzles 57a and 57b from the water tank 71 through the main conduit 70, the division valve 59, and the supply pipe 60. 58a, 58b
Spray water. Thus, the fire source FA is extinguished. Note that water is not sprayed from the nozzles 57c and 58c due to the action of the check valves 52 and 55.

(In case of fire source FC) For example, it is assumed that a fire source FC has occurred at a point 120 in FIG. Then, since the ultraviolet ray detectors 13A and 13B have the fire source FC in the ultraviolet ray detection area (shown by a straight line in the figure), the ultraviolet ray is directly incident from the fire source FB. For example, if the ultraviolet ray detector 13A is a structure 60 such as an engine,
Even if a interferes with the detection of the fire by the ultraviolet detector 13A, the ultraviolet light reflected from the structure 60b will enter the ultraviolet detector 13A, and the level of the ultraviolet light due to the reflected wave will exceed a predetermined value. If this is the case, the ultraviolet detector 13A will output a fire signal.

Similarly, for example, even if the ultraviolet detector 13B cannot directly detect a fire with the ultraviolet detector 13B because the structure 60b such as an engine is in the way, the structure 60
The ultraviolet light reflected from a is incident on the ultraviolet detector 13B, and when the level of ultraviolet light by the reflected wave exceeds a predetermined value, the ultraviolet detector 13B outputs a fire signal.

The infrared detectors 15A and 15B also directly receive infrared rays because the fire source FB exists in the infrared detection area (shown by a dotted line in the figure). These ultraviolet detectors 13A and 13B and infrared detector 15
A and 15B each output a fire signal by detecting a predetermined level. These fire signals are input to the fire monitoring control panel 17. The fire monitoring control panel 17 determines that the fire is the first fire based on the fire signals from the ultraviolet detectors 13A and 13B (step 201; YES), and the fire signals from the infrared detectors 15A and 15B continue for a predetermined time. Sometimes a second report fire is determined (step 202; Y
ES), a fire occurrence is notified and a fire occurrence area is specified based on the above determination results. At this time, the fire monitoring control panel 17 specifies the range of both the infrared detectors 15A and 15B.

The fire monitoring and control panel 17 immediately causes the visible and audible alarm 21 to issue an alarm indicating that a fire has occurred, and causes the fire alarm panel 25 to issue a fire alarm and indicate the location of the fire (see FIG. 2). Step 203).
Here, for example, if the crew operates the machine-side operation push button 23, the fire monitoring control panel 17 gives a pump start signal to the pump start panel 74 based on the operation signal and the fire signal, and the partition valve 59. , 61 (Step 204; YES-Step 2)
05).

As a result, the electric motor 73 is activated to drive the pump 72 to draw water from the water tank 71 by the water tank 71 and to draw water from the water tank 71 to the main pipeline 70.
Water is sprayed from the nozzles 57a, 57b, 57c, 58a, 58b, 58c via the partition valves 59, 61 and the supply pipes 60, 62. As a result, the fire source FB is extinguished. In this case, the largest area (the entire protected area 3) is sprayed with water.

(In case of fire source FG) For example, it is assumed that a fire source FG has occurred at a point 130 in FIG. Then, since the fire source FG is present in the ultraviolet detection area (shown by a straight line in the drawing), the ultraviolet detector 13B receives ultraviolet light directly from the fire source FG. In addition, the infrared detector 15B also directly receives infrared light because the fire source FG is present in the infrared detection area (shown by a dotted line in the figure). Note that the ultraviolet ray detector 13A does not detect the fire source FG because the fire source FG is not in the ultraviolet ray detection area of the ultraviolet ray detector 13A as shown by a dotted line k in FIG.

When each of the ultraviolet detector 13B and the infrared detector 15B detects a predetermined level, it outputs a fire signal. This fire signal is sent to the fire monitoring and control panel 17
Is input to The fire monitoring control panel 17 determines the first report fire based on the fire signal from the ultraviolet detector 13B (step 201; YES), and the infrared detector 15B
Is determined to be the second report fire when the fire signal has been transmitted for a predetermined time (step 202; YES), the occurrence of a fire is notified and the fire occurrence area is specified based on the results of the two determinations (step 203). Here, the fire monitoring control panel 17
Is specified as the right half of the protected area 3 in FIG.

The fire monitoring and control panel 17 immediately causes the visible and audible alarm 21 to issue an alarm when a fire has occurred, and causes the fire alarm panel 25 to issue an alarm when a fire has occurred and to display the location of the fire (step). 203). Here, for example, if the crew operates the machine-side operation push button 23, the fire monitoring control panel 17 gives a pump start signal to the pump start panel 74 based on the operation signal and the fire signal, and the partition valve 61 Is output (Step 204; YES-Step 205).

As a result, the electric motor 73 is activated to drive the pump 72 to draw water from the water tank 71 by the water tank 71 and to draw water from the water tank 71 to the main conduit 70,
Nozzles 57c, 57 via the division valve 61 and the supply pipe 62
Spray water from b, 58c, 58b. This allows
The fire source FG will be extinguished. Water is not sprayed from the nozzles 57a and 58a by the action of the check valves 51 and 54.

According to the first embodiment, the above-described configuration and operation as described above have the following advantages. (1) Since electromagnetic waves composed of ultraviolet rays and infrared rays are used for fire detection, erroneous detection due to the atmosphere of the engine room does not occur, and the propagation speed of electromagnetic waves, which is a fire detection medium, is high. And the fire extinguishing can be dealt with earlier. (2) A wide-angle ultraviolet detector detects the electromagnetic wave as ultraviolet light and recognizes it as the first fire report. Based on the signal, the narrow-angle infrared fire detector receives a direct fire signal of infrared electromagnetic wave for a predetermined time. In addition, the fire source in the protected area can be limited. (3) Since the inside of the protected area is divided into predetermined sections, and a fire detection system in the ship can effectively detect a fire in the section, a fire extinguishing section is specified and a fire extinguisher is applied only to the fire extinguishing section. Since it becomes possible to supply, it is possible to minimize damage to peripheral devices due to fire extinguishing agent injection.

[Second Embodiment] The second embodiment of the present invention is different from the first embodiment in that the fire detecting element transmitted by a predetermined medium reaches a certain state. The first feature is that a media type fire detector (heat detector or smoke detector) for detecting a fire signal is further provided. That is, in the second embodiment of the present invention, FIGS.
A general heat sensor or smoke detector is further provided in the configuration shown in FIG.

Here, the medium-type fire detector will be described. As described above, the medium-type fire detector includes a heat detector and a smoke detector due to the fire detecting elements. In short, the heat sensor is a sensor that outputs a fire signal when a fire detection element (heat) transmitted by a predetermined medium (air or the like) reaches a predetermined value. In short, this smoke detector is a detector that outputs a fire signal when a fire detection element (smoke) transmitted by a predetermined medium (air) reaches a predetermined value. In both types of sensors, the presence of a substance (fire detection element) is indispensable, and the substance (fire detection element) becomes a medium of fire and can reach the sensing part and detect a fire. is there.

In the second embodiment of the present invention, the added heat sensor or smoke sensor is not denoted by the reference numeral,
The components used in this embodiment will be described with the same reference numerals as in the first embodiment.

Next, a second feature of the second embodiment of the present invention resides in a processing method in the fire monitoring control panel 17a. That is, the fire monitoring control panel 17a is connected to the ultraviolet detector 13 (the ultraviolet detector 13A,
3B) is determined to be the first report fire, and the second report is performed when the fire signal from the infrared detector 15 (the infrared detectors 15A and 15B in FIGS. 1 to 3) continues for a predetermined time. A fire is determined, and a fire signal from the medium-type fire detector (heat detector or smoke detector) is determined as a third report fire. A fire is reported based on the three determination results, and a fire occurrence area is determined. It is something to be specified. The fire detection system in the ship according to the second embodiment can also control the fire extinguishing operation in the local fire extinguishing system in the ship engine room, as in the first embodiment described above.

According to the second embodiment, the above-described configuration is provided and the operation is performed as described above. Therefore, the following advantages are provided in addition to the advantages of the first embodiment. (1) In addition to the fire detection by ultraviolet rays and infrared rays, the fire is detected by a medium such as heat or smoke, so that the fire can be detected more reliably. (2) When a fire is detected, the fire often occurs without fail. Therefore, when a fire is detected, the local fire extinguishing system in the ship engine room can be operated immediately.

[Third Embodiment] FIG. 6 shows a third embodiment of the present invention.
It is a figure which shows the relationship between the sensor used by the fire detection system in the ship which concerns on embodiment, and an imaging device. According to the third embodiment of the present invention, in addition to the ultraviolet sensor 13 and the infrared sensor 15 in the first embodiment, an area smaller than the infrared sensing area of the infrared sensor is monitored. A first feature is that an imaging device capable of imaging the area via an infrared filter is provided for each of the infrared sensor or the ultraviolet sensor.

Explaining the first characteristic point, an image pickup apparatus capable of picking up an image of a monitored area through the infrared filter is a CC with an infrared filter in the third embodiment.
D camera 81, and the CCD camera 81
As shown in FIG. 8, an ultraviolet sensor 13 and an infrared sensor 15 are integrated. As can be seen from FIG. 8, the ultraviolet detector 13 is set in an ultraviolet detection area AV where the largest area can be monitored.
The infrared detector 15 is set in an infrared area AS smaller than the ultraviolet detection area AV inside the ultraviolet detection area AV. The CCD camera 81 is set so as to be able to monitor a camera area AC smaller than the infrared area AS of the infrared sensor 15. These ultraviolet detector 13, infrared detector 15 and CCD camera 81
Are electrically connected to the fire monitoring control panel 17b, respectively.

The second feature of the third embodiment of the present invention resides in the processing operation of the fire monitoring control panel 17b. The fire monitoring control panel 17b used in the fire detection system for a ship according to the third embodiment is different from the fire monitoring control panel 17 according to the first embodiment in that the CCD
An image processing program capable of image processing infrared image data from the camera 81 is added.

The fire monitoring and control panel 17b according to the third embodiment determines that the fire signal from the ultraviolet detector 13 is a first report fire, and the fire signal from the infrared detector 15 is for a predetermined time. If continued, it is judged that a fire has occurred as the second report fire has occurred, and a fire monitoring state is entered.
The infrared image data from the D camera (imaging device) 81 is image-processed by the image processing program, and a fire occurrence area is specified from the infrared image data based on the two fire reports.

The operation according to the third embodiment will be described with reference to FIGS. FIG. 7 is a flowchart for explaining the operation of the fire monitoring control panel of the fire detection system in the ship according to the third embodiment of the present invention. In the fire detection system for a ship according to the third embodiment, the fire monitoring control panel 17b
When the fire signal from the ultraviolet detector 13 is input, it is determined that the fire is the first report fire (step 301; YES), and the fire signal from the infrared sensor 15 is input and the fire signal is When continued, it is determined that there is a second report fire, and it is determined that a fire has occurred based on the first report fire (step 302; YES).
1 is set as a fire, an alarm is issued, and a fire monitoring state is entered.

When the fire monitoring control panel 17b enters the fire monitoring state, the infrared image data from the CCD camera (imaging device) 81 is image-processed by the image processing program, and the infrared image data is processed based on the two fire reports. A fire occurrence area is specified from (step 303). Here, for example, when the crew operates the machine-side operation push button 23 in the first embodiment, the fire monitoring control panel 17b starts the pump starting panel 74 on the pump starting panel 74 based on the operation signal and the fire information. And a command signal for opening both of the compartment valves 59 and 61 based on the fire area identification information (step 304; YES-step 30).
5).

According to the third embodiment, the above-described configuration is provided and the operation is performed as described above. Therefore, in addition to the advantages of the first embodiment, the CCD camera 81 with an infrared filter can The location of the digestion agent can be specified, the digestion release system of the optimal compartment can be selected, and the damage to peripheral devices due to the digestion (water) spraying can be minimized.

[Fourth Embodiment] FIGS. 8 to 10 are diagrams for explaining a fourth embodiment of the present invention. Here, FIG. 8 is a diagram showing a local fire extinguishing system in a marine engine room according to a fourth embodiment of the present invention. FIG.
FIG. 13 is a plan view showing the vicinity of a protected area in a local fire extinguishing system in a marine engine room according to a fourth embodiment of the present invention. FIG. 10 is a front view showing the vicinity of a protected area in a local fire extinguishing system in a marine engine room according to a fourth embodiment of the present invention.

In these figures, the local fire extinguishing system 1a in the ship engine room according to the fourth embodiment of the present invention is different from the local fire extinguishing system 1 in the ship engine room shown in the first embodiment in that the fire extinguisher is different. This is the part related to the release system, and the other configuration remains unchanged. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

Similarly to the digestive release system 5 of the first embodiment, the digestive release system 5a according to the fourth embodiment also divides the interior of the protected area 3 formed by the internal space of the engine room of the ship by a predetermined amount. The fire extinguishing agent (for example, water) can be individually and selectively discharged to a predetermined section divided into the area.

The specific configuration of the digestive release system 5a is as follows. That is, the digestive release system 5a according to the fourth embodiment includes a nozzle pipe 5 having no check valve.
3, the nozzle pipe 56 having no check valve, and the partition valves 59a, 59 provided at predetermined intervals in the nozzle pipe 53.
Nozzles 57 attached to the tips of b, 59c and 59d
a, 57b, 57c, 57d and the nozzle pipe 56
, 61a, 61b, 61 provided at predetermined intervals
Nozzles 58a, 58 attached to the tips of c, 61d
b, 58c and 58d.

The nozzle pipe 53 and the nozzle pipe 56
Are connected to a single main conduit 70. Also,
Each of the partition valves 59a, 59b, 59c, 59d, 61
a, 61b, 61c, and 61d are individually selected to open the nozzles 57a, 57b, 57c, and 57d.
d and the nozzles 58a, 58b, 58c, 58d, together with the arrangement of the nozzles, puts a fire extinguishing agent (water in this embodiment) into a predetermined section which divides the protection area 3 consisting of the internal space of the engine room. ) Can be spouted individually and selectively.

Each of the partition valves 59a, 59b, 59
c, 59d and each of the division valves 61a, 61b, 61c, 6
1d can be individually and selectively controlled to open and close by a control signal from the fire monitoring control panel 17c. The local fire extinguishing system in the ship engine room according to the fourth embodiment can be applied with the fire detection system in the ship according to the first to third embodiments.

The fourth embodiment also has the same advantages as the local digestion system in the marine engine room to which the first embodiment is applied, and completely eliminates the nozzle 5.
Fire extinguishing agent can be discharged for each of the nozzles 58a, 58b, 58c or 58d. Therefore, according to the fourth embodiment,
In addition to having the same functions and effects as those of the above-described first to third embodiments, it is possible to extinguish a fire by a precise fire extinguishing section and minimize damage caused by a fire extinguishing agent.

[0055]

As described above, according to the first aspect of the present invention, the following effects can be obtained. (1) An ultraviolet detector and an infrared detector are used for the fire detector, and the fire can be detected using electromagnetic waves, so that there is no false detection due to the atmosphere in the engine room.
Since the propagation speed of the electromagnetic wave that is the fire detection medium is high, the detection time of the initial fire extinguishing is shortened, and early initial fire extinguishing can be performed. (2) Fire detection at wide angle is detected by ultraviolet electromagnetic wave, the first report is recognized by fire occurrence signal, and based on that signal, the direct wave signal of infrared electromagnetic wave is received long by narrow angle infrared fire detector, Since fire, which is a fire source within the detection range, is limited, and the fire extinguishing agent can be discharged to a section where fire extinguishing is required, damage to peripheral equipment due to fire extinguishing agent discharge can be minimized.

Further, the position of the fire source from the imaging device with the infrared filter can be specified, and the fire can be extinguished by selecting the optimal discharge system of the section to be extinguished.

[Brief description of the drawings]

FIG. 1 is a diagram showing a local fire extinguishing system in a ship engine room to which a fire detection system for a ship according to a first embodiment of the present invention is applied.

FIG. 2 is a plan view showing the vicinity of a protected area in a local fire extinguishing system in a ship engine room to which the fire detection system for a ship according to the first embodiment of the present invention is applied.

FIG. 3 is a front view showing a relationship in the vicinity of a fire detector and a protected area according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram of a sensing area of a sensor used in the fire detection system in the ship according to the embodiment.

FIG. 5 is a flowchart illustrating an operation of a fire monitoring control panel of the fire detection system in the ship according to the first embodiment of the present invention.

FIG. 6 is a diagram showing a relationship between a detector and an imaging device used in a fire detection system in a ship according to a third embodiment of the present invention.

FIG. 7 is a flowchart illustrating an operation of a fire monitoring control panel of a fire detection system in a ship according to a third embodiment of the present invention.

FIG. 8 is a diagram showing a local fire extinguishing system in a marine engine room according to a fourth embodiment of the present invention.

FIG. 9 is a plan view showing the vicinity of a protected area in a local fire extinguishing system in a marine engine room according to a fourth embodiment of the present invention.

FIG. 10 is a front view showing the vicinity of a protected area in a local fire extinguishing system in a marine engine room according to a fourth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fire detection system in a ship 3 Protected area 5, 5a Fire extinguishing system 7 Supply system 11 Fire detection system in a ship 13, 13A, 13B Ultraviolet detector 15, 15A, 15B Infrared detector 17, 17a, 17b Fire monitoring control panel 57a, 57b, 57c, 58a, 58b, 58c Nozzles 59a, 59b, 59c, 59d, 61a, 61b, 6
1c, 61d Compartment valve

Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court II (Reference) G08B 17/12 G08B 17/12 A (72) Inventor Kosuke Murakami 945 Komachi, Onishi-cho, Onishi-gun, Ochi-gun, Ehime Prefecture Shin Co., Ltd. Kurushima Dock (72) Inventor Katsunori Yasunaga 2- 40-7 Higashi-Kanagawa, Kanagawa-ku, Yokohama-shi, Kanagawa Japan In-house Marine Electronics Co., Ltd. In-house (72) Inventor Takeshi Sato 8-8-20 Nishi-Gotanda, Shinagawa-ku, Tokyo Inside Electric Disaster Prevention Co., Ltd. (72) Inventor Hideto Hamada 8-8-20, Nishi-Gotanda, Shinagawa-ku, Tokyo F-term inside Electric Disaster Prevention Co., Ltd. 2E189 CA09 CB01 CB07 CC01 CE07 5C085 AA13 AA14 AB01 AB09 AC03 AC07 BA31 BA36 CA04 CA05 CA15 CA16 CA20 CA23 DA16 DA18 DA19 EA18 EA27 EA41 FA31 5G405 AA01 AA06 AB05 AC01 AC07 AD01 AD06 AD07 BA01 CA05 CA06 CA07 CA21 CA23 CA29 CA31 DA21 DA23 DA24 EA18 EA27 EA41 FA21

Claims (5)

[Claims] An engine and its peripheral equipment are divided into predetermined spaces in an engine room space of a ship in which an engine and its peripheral devices are arranged in a complicated manner, and a fire detector is disposed in each of the predetermined regions. What is claimed is: 1. A fire detection system for a ship, wherein a fire detector is capable of individually detecting and distinguishing a fire by a fire detector, wherein the fire detector emits a predetermined amount of ultraviolet light directly or indirectly incident from a flame of a fire generated in the predetermined area. An ultraviolet detector that outputs a fire signal when it reaches the level,
An infrared detector for outputting a fire signal when infrared light directly incident from a flame of the fire generated in the predetermined area reaches a predetermined level, and a first signal is generated by the fire signal from the ultraviolet detector. A fire monitoring control panel for determining a fire, determining that a fire has occurred when the fire signal from the infrared sensor has continued for a predetermined period of time, and specifying a fire occurrence area based on the fire signal from those sensors. A fire detection system for ships. 2. The fire monitoring control according to claim 2, wherein said infrared detector and said ultraviolet detector are added to a medium type fire detector for detecting a fire signal when a fire detection element transmitted by a predetermined medium reaches a certain state. The board determines the first report fire based on the fire signal from the ultraviolet detector, and determines the second report fire when the fire signal from the infrared detector continues for a predetermined time, and enters a fire monitoring state. 2. The ship according to claim 1, wherein a fire is determined when a fire signal is transmitted from the medium type fire detector, and a fire occurrence area is specified based on the fire signal from the fire detector. Fire detection system in the country. 3. In addition to the infrared sensor and the ultraviolet sensor, an imaging device that can monitor an area smaller than the infrared sensing area of the infrared sensor and image the area via an infrared filter can be used as the infrared sensor or the ultraviolet light. The fire monitoring and control panel is provided for each sensor, and the fire monitoring control panel determines a fire signal from the ultraviolet detector as a first report fire, and when the fire signal from the infrared sensor continues for a predetermined time, a second report fire occurs. 2. The fire detection system according to claim 1, wherein a fire occurrence area is identified by determining that a fire has occurred and performing image processing on infrared image data from the imaging device. 4. The fire detection system for a ship according to claim 3, wherein the fire monitoring control panel is provided with a screen display device, and can display infrared image data from the imaging device on the screen display device. 5. The fire detection system for a ship according to claim 1, wherein the space in the engine room of the ship is divided into predetermined sections, and a fire extinguisher is provided for each section. A fire extinguisher discharge system configured to be capable of jetting individually and selectively, and a fire extinguisher supply system capable of supplying a fire extinguisher to the fire extinguisher discharge system, wherein the fire detection system corresponds to a specified fire occurrence area A local fire extinguishing system in a ship engine room, wherein a fire extinguisher discharge command is given to a fire extinguisher discharge system in the predetermined section and a fire extinguisher supply command is output to a fire extinguisher supply system.