JP2018018265A - Fire protection heat sensitive system and fire protection hose applied to the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire protection heat sensitive system that senses heat of an approach route of a fire protection hose to help secure an evacuation path, and a fire protection hose applied to the system.SOLUTION: A fire protection heat sensitive system includes: a fire protection hose H1 that is laid by fire fighting personnel such as a fire fighter for drainage at a fire site from a fire fighting water supply or a fire engine 10 in a desired approach route P1; a cable type heat sensitive tool T1 laid along the approach route; and a controller 400 that is connected with the heat sensitive tool to determine presence of temperature anomaly in the approach route based on detection results by the heat sensitive tool.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat sensing system for fire fighting and a fire hose applied to the system.

  Conventionally, various fire detection devices for buildings and the like have been proposed (Patent Document 1, etc.).

  These fire detection devices detect heat from a fire by using a heat sensing device such as an optical fiber method, a thermocouple method, and a thermal element method, issue an alarm, and notify a fire department or the like.

  By the way, fire extinguishing personnel composed of firefighters or the like are dispatched to the fire site in response to a report by the fire detection device or a report by a person who discovers a fire. Then, a firefighter or the like draws a fire hose connected to a fire hydrant or a pump car through a desired approach route and discharges the water to perform a fire fighting operation.

Japanese Patent Laid-Open No. 7-265459

  Here, depending on the fire site, there is a possibility that the approach path of the fire hose routed as described above may be exposed to high temperature due to fire spread or the like.

  In such a case, a retreat route (usually the same route as the entry route) for a firefighter or the like who is performing a water discharge operation with a fire hose or a person in the vicinity of the approach route of the fire hose to withdraw. In many cases, it is exposed to high temperatures and may be dangerous to human lives.

  In addition, when the approach path is exposed to high temperatures, the fire hose is destroyed by heat, causing a problem that water discharge becomes impossible. In particular, in the case of a fire hose applied to a compressed air foam fire system (CAFS) that radiates bubbles containing compressed air, the surface of the hose as compared with the case where normal fire water is circulated in the hose. The temperature of the hose itself is likely to rise, and when the approach path is exposed to a high temperature, the hose itself is easily affected.

  In view of the circumstances described above, the present invention has an object to provide a heat detection system for fire fighting that senses heat of an approach path of a fire hose and contributes to securing a retreat path and the fire hose applied to the system. It is said.

  In order to solve the above-mentioned problems, a heat sensing system for fire fighting according to the present invention is for fire fighting laid by a fire fighting person such as a fire fighter in a desired approach route from a fire fighting water or a fire truck for water discharge at a fire site. A hose, a cable-shaped heat sensor laid along the approach path, and the heat sensor are connected to determine whether there is a temperature abnormality in the approach path based on a detection result of the heat sensor. And a control device.

  A fire hose according to another invention is characterized in that a cable-like heat sensing device is integrally provided along the longitudinal direction.

  ADVANTAGE OF THE INVENTION According to this invention, the heat | fever hose for fire fighting applied to the heat sensing system for fire fighting which senses the heat | fever of the approach path | route of a fire hose and contributes to ensuring of an evacuation path | route, etc. can be provided.

It is explanatory drawing which shows the whole structure of the heat sensing system for fire fighting which concerns on 1st Embodiment. It is a perspective view which shows the reel-shaped winding apparatus which winds the heat sensing cable applied to the heat sensing system for fire fighting which concerns on 1st Embodiment. It is a schematic explanatory drawing which shows the 1st structural example of the heat sensing cable applied to the heat sensing system for fire fighting which concerns on 1st Embodiment. It is a schematic explanatory drawing (a) and (b) which shows the structural example of a thermocouple wire. It is the side sectional view (a) and the AA line sectional view (b) showing the 2nd example of composition of the heat sensing cable applied to the heat sensing system for fire fighting concerning a 1st embodiment. It is a block diagram which shows the structural example of the control apparatus applied to the heat sensing system for fire fighting which concerns on 1st Embodiment. It is a flowchart which shows the process sequence of the heat sensing process performed with the heat sensing system for fire fighting which concerns on 1st Embodiment. It is explanatory drawing which shows the example of a display of the portable terminal applied to the heat sensing system for fire fighting which concerns on 1st Embodiment. It is explanatory drawing which shows the other example of a display of the portable terminal applied to the heat sensing system for fire fighting which concerns on 1st Embodiment. It is explanatory drawing which shows the whole structure of the heat sensing system for fire fighting which concerns on 2nd Embodiment. It is a schematic explanatory drawing which shows the 1st structural example of the fire hose applied to the heat sensing system for fire fighting which concerns on 2nd Embodiment. It is a schematic explanatory drawing which shows the 2nd structural example of the fire hose applied to the heat sensing system for fire fighting which concerns on 2nd Embodiment. It is a schematic explanatory drawing which shows the 3rd structural example of the hose for fire fighting applied to the heat sensing system for fire fighting which concerns on 2nd Embodiment. It is a schematic explanatory drawing which shows the structural example of the thermoelectric conversion element applied to the 3rd structural example of the fire hose shown in FIG. It is the perspective view (a) and sectional drawing (b) which show the other example of the thermoelectric conversion element shown in FIG. It is explanatory drawing which shows the outline of the system configuration | structure of the heat sensing system for fire fighting which concerns on 2nd Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment as an example of the present invention will be described in detail with reference to the drawings. Here, in the accompanying drawings, the same reference numerals are given to the same members, and duplicate descriptions are omitted. In addition, since description here is the best form by which this invention is implemented, this invention is not limited to the said form.

(First embodiment)
With reference to FIGS. 1-9, the heat sensing system S1 for fire fighting which concerns on 1st Embodiment is demonstrated.

  Here, FIG. 1 is an explanatory view showing the overall configuration of the fire detection heat sensing system S1 according to the first embodiment, and FIG. 2 is a winding of a heat detection cable T1 and the like applied to the fire detection heat sensing system S1. It is a perspective view which shows the reel-shaped winding apparatus 200 to perform.

  As shown in FIG. 1, the fire detection heat detection system S <b> 1 is used by a firefighter or other fire extinguishing personnel (not shown) to discharge water at a fire site from a fire truck 10 such as a pump car on a desired approach path P <b> 1. The fire hose H1 to be laid, the cable-like heat sensor T1 (T2) laid along the approach path P1, and the heat sensor T1 (T2) are connected to each other by the heat sensor T1 (T2). A control device 400 (details will be described later with reference to FIG. 6) is provided that determines the presence or absence of temperature abnormality in the approach path P1 based on the detection result.

  Although not particularly limited, the fire hose H1 shown in FIG. 1 can be a fire hose applied to a compressed air foam fire system (CAFS). In this case, a bubble 500 containing compressed air is ejected from the nozzle 105 attached to the tip of the fire hose H1.

  In FIG. 1, the case where two hoses H1a and H1b are connected and used is shown for simplification of the description. However, the present invention is not limited to this. When one hose is used, or three or more hoses are used. The case where it connects and uses a hose may be used.

  In FIG. 1, one end of the first hose H <b> 1 a is connected to a water discharge port 11 provided in a vehicle body of a fire engine via a connection fitting 101. The hose H1a may be connected to a firefighting water supply such as a fire hydrant instead of the water discharge port 11 of the fire engine.

  The other end of the hose H1a and one end of the second hose H1b are connected via connection fittings 102 and 103.

  A nozzle 105 is connected to the other end of the hose H1b via a connection fitting 104.

  A connector C is provided at one end of the cable-shaped heat sensing tool T1 (T2), and is connected to a connection portion 12 provided on the vehicle body of the fire engine 10.

  A configuration example of the cable-shaped heat detector T1 (T2) will be described later.

  The cable-shaped heat sensor T1 (T2) is wound around a reel-shaped winding device 200 as shown in FIG.

  The winding device 200 includes a handle 201 for carrying and a leg portion 202 for installation.

  Then, fire fighters such as firefighters pull out the cable-shaped heat sensor T1 (T2) while transporting the winding device 200 in the direction D1 along the approach path P1 where the fire hose H1 is laid. Lay down.

  Thereby, as shown in FIG. 1, the cable-shaped heat detector T1 (T2) can be laid along the approach path P1 in which the fire hose H1 is laid, and heat detection in the approach path P1 is performed. Can do.

  And by detecting the heat of the approach path P1 of the fire hose H1, a retreat path P2 (in the example shown in FIG. 1, the same as the approach path P1) is secured, and the damage state etc. due to the heat of the fire hose H1 is confirmed. I can grasp.

  In particular, by detecting and grasping the temperature rise state of the approach path P1, it is possible to avoid the situation where the retreat path P2 is exposed to high heat due to the spread of fire and the retreat is cut off. Can safely evacuate before the retreat is lost.

  The cable-like heat detector T1 (T2) may be collected and reused after the fire is extinguished if there is no damage or the like, or may be disposable if there is damage due to heat or the like. .

(Configuration example of cable-shaped heat sensor)
With reference to FIG. 3 and FIG. 4, the structural example of the cable-shaped heat sensing tools (heat sensing cable) T1 and T2 is demonstrated.

  FIG. 3 is a schematic explanatory diagram showing a schematic configuration of a heat sensing cable T1 according to a first configuration example applied to the fire detection heat sensing system S1 according to the first embodiment.

  The heat sensing cable T1 is provided at the ends of the cable-shaped electric wire bodies 301 and 303, at least a part of the thermocouple wire 301 and a plurality of thermocouples 302 provided at predetermined intervals, and at the terminals of the electric wire main bodies 301 and 303. And a connector portion C (see FIG. 1 and the like) that is electrically connected to the control device 400 (see FIG. 6 and the like).

  In the heat sensing cable T1, for example, the thermocouple wire 301 is connected to the positive electrode side and the return wire 303 is connected to the negative electrode side.

  The thermocouple 302 is constructed by connecting a plurality of pure iron and constantan, and alternately connects a hot junction having a small heat capacity and a cold junction having a large heat capacity, and the difference in temperature rise between each contact due to a fire is a difference in the heat capacity of the contacts. This is a type of heat sensor that detects a temperature rise based on the sum of thermoelectromotive forces generated at the junction.

  Here, the thermocouple wires 301A and 301B according to the configuration example will be described with reference to FIGS.

  As shown in FIG. 4A, the thermocouple wire 301A is configured by connecting a plurality of thermocouples obtained by joining two different types of metals a and b. In the drawing, metal a is represented by reference numeral 903 and metal b is represented by reference numeral 902. The metal a and the metal b constituting the thermocouple are connected by a conductive wire 909 that is flexible and highly conductive.

  As a result, the heat sensing cable T1 configured by connecting a plurality of thermocouple wires 301A bends at the connection line 909, and thus can be laid along the approach path P1.

  As shown in FIG. 4B, the thermocouple wire 301 </ b> B is obtained by connecting about ten thermocouple elements composed of a hollow pure iron pipe 911 and a constantan pipe 912 in series.

  Moreover, the flexible connection line 915 connected with the other thermocouple wire 301B is provided in the both ends.

  As a result, the heat sensing cable T1 configured by connecting a plurality of thermocouple wires 301B bends at the connection line 915, and therefore can be laid along the approach path P1.

  The thermocouple wire 301A has a shorter interval between the conductive wires 909 having flexibility than the thermocouple wire 301B, so that the heat sensing cable T1 as a whole is more flexible, as shown in FIG. In the case of winding around a reel-shaped winding device 200, the reel diameter can be further reduced. Therefore, the manageability of the heat sensing cable T1 and the like can be improved, and convenience can be enhanced.

  Such a thermocouple 302 is an application of the Seebeck effect in which an electromotive force (for example, about 1 mV) is generated according to a temperature difference at a junction point due to a difference in thermoelectric power between two different kinds of metals. is there.

  According to the heat sensing cable T1 using the thermocouple 302, it is determined whether or not the temperature of the approach path P1 as shown in FIG. However, it is difficult to determine which part of the heat sensing cable T1 has become hot.

  Next, FIG. 5A is a side sectional view of a heat sensing cable T2 according to the second configuration example applied to the heat sensing system S1 for fire fighting according to the first embodiment, and FIG. It is the AA sectional view taken on the line.

  The heat sensing cable T2 according to the second configuration example includes a long optical fiber cable FC laid on the approach path P1 (see FIG. 1) as a heat sensor unit, and a terminal of the optical fiber cable FC. The apparatus 400 (refer FIG. 6 etc.) and the connector part C optically connected are provided.

  In addition, the control device 400 to which the heat sensing cable T2 according to the second configuration example is applied includes an incident unit configured by a laser light source or the like that makes pulsed light incident from the input end of the optical fiber cable FC, and heat. In response, detection means (detection) that receives backscattered light generated in the optical fiber F of the optical fiber cable FC and detects the temperature of the laid region of the optical fiber cable by an optical time domain reflection measurement method based on the backscattered light. Part).

  The optical fiber cable FC includes an optical fiber F having a core part 351 and a clad part 352, a resin 354 that covers the periphery of the optical fiber F, and a heat-resistant tube 353 that is made of, for example, metal and covers the resin 354. Yes. Here, it is desirable that the resin 354 has heat resistance in terms of protecting the optical fiber.

  Here, the principle of heat detection using the optical fiber cable FC will be briefly described.

  First, when pulse light is incident on the optical fiber F of the optical fiber cable FC, the pulse light attenuates while being slightly scattered at each part as it propagates through the optical fiber F. Most of the scattered light is Rayleigh scattered light, and is generated by minute refractive index fluctuations in the optical fiber F.

  Then, a part of the scattered light performs the lattice vibration and energy transfer of the quartz molecules constituting the optical fiber F, and the wavelength of the incident light is slightly shifted to become Raman scattered light (Raman Scattering).

  This Raman scattered light has two components: Stokes light in which light imparted energy to the lattice vibration is shifted to the long wavelength side, and anti-Stokes light that obtains energy from the lattice vibration and shifts to the short wavelength side. Here, in particular, the intensity of the anti-Stokes light has a characteristic that it greatly changes depending on the temperature of the optical fiber F at the position where the scattering occurs. Therefore, the temperature of the optical fiber F can be obtained by measuring the intensity of Raman scattered light.

  Most of the light scattered in the optical fiber F is emitted to the outside of the optical fiber F, but part of the light travels backward in the optical fiber F and returns to the incident end. Therefore, by measuring the time from when the pulsed light is incident until the scattered light returns to the incident end, the position where the scattering occurs in the optical fiber F (the position where the temperature change has occurred) is specified. The temperature distribution of the entire optical fiber cable FC can also be obtained.

  By such an optical time domain reflection measurement method based on backscattered light, the temperature of the laying region of the optical fiber cable FC can be detected.

  Although the temperature distribution of the entire length of the optical fiber cable FC can be obtained even by a single measurement, in order to process a very weak signal, an actual device repeatedly measures and averages a plurality of times. Therefore, practical accuracy can be obtained.

(About control device)
The control device 400 will be described with reference to FIG.

  As shown in FIG. 6, the control device 400 mounted on the fire engine 10 is connected to the heat sensing cables T1 and T2, and an electrical signal or an optical signal corresponding to the heat detected by the heat sensing cables T1 and T2. A detection unit 401 that detects the change, a voltage conversion circuit 402 that is connected to the fire engine power supply 450 and converts the voltage into a voltage required for driving the control device 400, and a control unit 403 that includes a microcomputer and controls each unit. An interface (I / F) 404 that exchanges signals with the outside, and a display unit 405 that includes a liquid crystal monitor or the like and displays various types of information.

  6 shows a case where the heat sensing cable T1 is connected to the detection unit 401 shown in FIG. That is, the thermocouple wire 301 of the heat sensing cable T1 configured as shown in FIG. 3 is electrically connected to the plus (+) side connecting portion 401a, and the return line 303 is electrically connected to the minus (−) side connecting portion 401b. Has been.

  In addition, although illustration is abbreviate | omitted, in the control apparatus comprised so that heat sensing cable T2 might be connected, it replaces with connection part 401a, 401b, and the optical connector which can connect optical fiber cable FC is provided.

  FIG. 6 shows an example in which one heat sensing cable T1 is connected. However, the present invention is not limited to this, and the number of heat sensing cables T1 corresponding to the number of fire hoses H1 to be laid is connected. Also good.

  In the control device 400 shown in FIG. 6, a test control signal and a test result are exchanged between the detection unit 401 and the control unit 403, and it is checked whether heat detection by the heat sensing cable T1 is normally performed. .

  Further, when a temperature abnormality is detected by the detection unit 401, a danger signal is input to the control unit 403. The control unit 403 outputs a state display signal and a danger notification signal to the outside and the display unit 405 via the interface 404 based on the danger signal.

  As a result, the display unit 405 displays that a temperature abnormality has occurred in the approach route P1.

  In addition, a display indicating that a temperature abnormality has occurred in the approach path P1 and a display for checking the monitoring state are performed on an external display panel or the like.

  Further, visual notification by turning on and blinking the LED and acoustic notification by ringing the bell are performed.

  In addition, as a kind of external output, an indication that a temperature abnormality has occurred in the approach path P1 on a portable terminal such as a tablet device connected via a cable or wirelessly such as Wi-Fi or Bluetooth, etc. Can be done. A specific display example will be described later.

  In addition, the test, recovery, stop, release of accumulation, and the like are performed by operating a panel switch or the like provided in the control device 400 or the like.

  Various signals transmitted from a portable terminal such as a tablet device are input via the interface 404.

(Heat detection processing)
With reference to the flowchart of FIG. 7, a processing procedure of heat sensing processing executed by the control device 400 will be described.

  When this process is started, first, in step S10, the heat sensing unit (heat sensing cable T1 (T2)) is monitored.

  In step S11, it is determined whether or not the sensed temperature exceeds a threshold value (for example, 70 ° C.). The threshold value can be changed according to the equipment of fire fighters such as firefighters, the scale of fire, and the like.

  If it is determined “No” in step S11, the process returns to step S10, and if it is determined “Yes”, the process proceeds to step S12.

  In step S12, a temperature abnormality is detected, and in step S13, an alarm is issued based on the temperature abnormality detection. Thus, the control unit 400 notifies the display unit 405, an external display panel, and the like that a temperature abnormality has occurred. In addition, the lighting and blinking of the LED, the ringing of the bell, and the like notify the fire extinguisher and other fire fighters visually and acoustically that it is necessary to evacuate immediately by the evacuation route P2 or other evacuation routes.

  In step S14, the information is transferred to the tablet terminal or the like, and in step S15, an abnormality display or the like is notified to the tablet terminal or the like, and then the processing of the heat sensing unit that detects the temperature abnormality is terminated. When there are a plurality of heat sensing units, the heat sensing process continues in the same flow.

(Configuration example of tablet terminal and its display example)
With reference to FIG. 8 and FIG. 9, the structural example and display example of the tablet terminal 600 applicable to the heat sensing system S1 for fire fighting are demonstrated.

  A tablet terminal 600 illustrated in FIG. 8 includes a display 601, operation buttons 602, a speaker 603, an LED 604, a camera 605, a microphone 606, and the like.

  The tablet terminal 600 may be a general tablet terminal in which an application dedicated to the heat sensing system is installed, or may be developed exclusively for the heat sensing system.

  FIG. 8 shows a display example when the heat sensing cable T1 is applied in the heat sensing system S1 for fire fighting.

  In the display example shown in FIG. 8, a case is shown in which the heat sensing cable T <b> 1 is laid over three systems, and each is designated as monitoring lines 1 to 3.

  Here, since the thermal sensing cable T1 uses a plurality of thermocouples 302 as thermal sensors (see FIG. 3), the temperature of the entry path P1 has reached a temperature that needs to be evacuated in any of the thermocouples 302. However, it is difficult to determine which part of the heat sensing cable T1 has become hot.

  Therefore, for example, when a temperature abnormality is detected in any thermocouple 302 of the heat sensing cable T1 as the monitoring line 1, only “abnormal” is displayed as shown in FIG.

  If no temperature abnormality is detected in the heat sensing cable T1 as the monitoring line 2, “monitoring” is displayed.

  Further, when the heat sensing cable T1 as the monitoring line 3 is not yet connected to the control device 400, or when the heat detection process has not yet started, “not connected” is displayed.

  Further, at the same time as displaying “abnormal”, an alarm sound such as an alarm or a sound notifying the occurrence of the abnormality may be output from the speaker 603.

  Accordingly, it is possible to notify fire fighters such as firefighters that a temperature abnormality has occurred in the middle of the approach path P1 where the heat sensing cable T1 as the monitoring line 1 is laid.

  Fire extinguishing personnel such as firefighters who have grasped the contents of notification by such display and voice can be evacuated by the evacuation route corresponding to the monitoring line 2 in which no temperature abnormality has been detected.

  In addition, if you want to check the details of the occurrence of temperature abnormalities, such as the location where the error occurred, use the call function installed in the tablet terminal 600 to inquire about the status of the specified department and take appropriate evacuation. You can also take action.

  FIG. 9 shows a display example when the heat sensing cable T2 is applied in the heat sensing system S1 for fire fighting.

  The hardware configuration of the tablet terminal 600 is as described above, and installed applications (software) are different.

  Here, since the heat sensing cable T2 is composed of the optical fiber cable FC, the position where the temperature change has occurred can be specified by the above-described measurement principle, and the temperature distribution of the entire optical fiber cable FC can be known.

  Therefore, when the heat sensing cable T2 is applied, as shown in FIG. 9, the temperature state for the laying area (distance) of the heat sensing cable T2 can be displayed in a graph format.

  Further, an area exceeding the threshold value for determining a temperature abnormality (70 ° C. in the example shown in FIG. 9) is displayed as “abnormal”, and at the same time, an alarm sound such as an alarm or a sound notifying the occurrence of the abnormality is output from the speaker 603. Also good.

  Therefore, a fire extinguisher such as a firefighter who grasps the notification contents by such display and voice can check the occurrence state of the temperature abnormality on the graph display and take an appropriate evacuation action.

  Although FIG. 9 shows the case where the monitoring status of one heat sensing cable T2 is displayed, the present invention is not limited to this, and when two or more heat sensing cables T2 are installed and monitored, each heat sensing cable T2 is displayed. The monitoring status for each sensing cable T2 can be displayed in a graph. In this case, the monitoring status may be displayed as a graph on the display 1 screen. Further, a monitoring line may be selected from the display screen of FIG. 8, or the screen may be switched when an abnormality occurs, and the monitoring status may be displayed in a graph as shown in FIG.

  In this way, when displaying the monitoring status of two or more heat sensing cables T2, it is possible to grasp the evacuation path where the temperature abnormality has not yet occurred, and to select such evacuation path and safely evacuate.

  Similarly to the display example of FIG. 8, when it is desired to confirm a more detailed situation regarding the occurrence of temperature abnormality, the situation is inquired to a predetermined department using a call function or the like installed in the tablet terminal 600. In addition, more appropriate evacuation behavior can be taken.

(Second Embodiment)
With reference to FIGS. 10-16, the heat sensing system S2 for fire fighting which concerns on 2nd Embodiment is demonstrated.

  In addition, about the structure similar to the heat sensing system S1 for fire fighting which concerns on 1st Embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 10 and the like, in the heat sensing system S2 for fire fighting according to the second embodiment, a cable-like heat sensing cable T41 (T41A to T41C) is integrally provided along the longitudinal direction. Hose set H21 is used.

  Each heat sensing cable T41 includes a plurality of heat sensing cable modules T4a and T4b.

  The heat sensing cable modules T4a and T4b constituting the cable-like heat sensing cable T41 are configured to be connectable via connectors C1 to C3 according to the length of the fire hose set H21 itself.

  In FIG. 10, for simplification of explanation, the case where the two fire hoses H2a and H2b and the heat sensing cable modules T4a and T4b are connected is shown, but the present invention is not limited to this. The present invention can be similarly applied to the case where the fire hose and the heat sensing cable module are connected.

(Configuration example of fire hose)
A configuration example of a fire hose set H21 (H21A to H21C) using a cable-like heat sensing tool (heat sensing cable) T41 will be described with reference to FIGS.

  In this configuration example, the fire hose set H21 includes fire hoses H2a and H2b.

  FIG. 11 is a schematic explanatory view showing a fire hose set H21A according to a first configuration example applied to the fire detection heat sensing system S2.

  In the fire hose set H21A, a heat sensing cable T41A using a thermocouple 302 as a heat sensor is integrally attached to the fire hose H2a (H2b).

  Note that the heat detection cable module T4b of the fire hose H2b is configured by a heat detection cable T41A connected to the heat detection cable module T4a of the fire hose H2a via the connectors C2 and C3. This is the same as the thermal sensing cable T1 (see FIG. 3) applied to the sensing system S1.

  In an actual configuration, the heat sensing cable T4A may be coated with heat resistance, wear resistance, or the like.

  FIG. 12 is a schematic explanatory view showing a fire hose set H21B according to a second configuration example applied to the fire detection heat sensing system S2.

  In the fire hose set H21B, a long optical fiber cable FC laid on the approach path P1 (see FIG. 10) as a thermal sensor part and connector parts C1 to C3 for optically connecting the optical fiber cables FC are provided. The provided heat sensing cable T41B is integrally attached to the fire hose H2a (H2b).

  The configuration of the heat sensing cable T41B is the same as that of the heat sensing cable T2 (see FIG. 4) applied to the fire fighting heat sensing system S1 according to the first embodiment.

  In an actual configuration, the heat sensing cable T41B may be coated with heat resistance, wear resistance, or the like.

  Next, with reference to FIGS. 13-15, the fire hose set H21C which concerns on the 3rd structural example applied to the heat sensing system S2 for fire fighting is demonstrated.

  FIG. 13 is a schematic explanatory diagram illustrating a configuration example of a fire hose set H21C according to a third configuration example.

  In the fire hose set H21C, a heat sensing cable T41C using a plurality of gate-shaped thermoelectric conversion elements (such as Peltier elements) 800 as a heat sensor is integrally attached to the fire hose H2a (H2b).

  Here, FIG. 14 is a schematic explanatory diagram illustrating a configuration example of a thermoelectric conversion element 800 applied to the fire hose set H21C.

  As shown in FIG. 14, the thermoelectric conversion element 800 includes a metal plate 801 made of Cu or the like that is installed on the surface of the fire hose H2a (H2b) and forms a current conduction path, an Ag layer 802a for bonding, A p-type semiconductor portion 804 and an n-type semiconductor portion 806 that are joined on the metal plate 801 through 802b, and Ag layers 803a and 803b for joining so as to straddle the p-type semiconductor portion 804 and the n-type semiconductor portion 806. And a metal plate 805 made of Cu or the like to be joined together.

  Then, with the metal plate 801 side as a cold junction and the metal plate 805 side as a hot contact, an electromotive force corresponding to a temperature difference between the cold junction and the hot junction caused by heat such as a fire causes a temperature abnormality in any thermoelectric conversion element 800. Can be determined.

  Here, FIG. 15A is a perspective view showing an example of the thermoelectric conversion element 700, and FIG. 15B is a cross-sectional view.

  The thermoelectric conversion element 700 includes a p-type semiconductor unit 711, an n-type semiconductor unit 712, a p-type metal mixing unit 713, an n-type metal mixing unit 714, a metal plate 715, and a metal plate 716. A laminated structure is formed.

The p-type semiconductor part 711 contains FeSi ₂ and a p-type additive, for example, Cr (chromium). For example, the p-type semiconductor portion 711 is obtained by adding 4.1 mass% Cr based on FeSi ₂ . FeSi ₂ is excellent in oxidation resistance and corrosion resistance.

FeSi ₂ can be used in a wide temperature range and has a low environmental load. That is, it is considered suitable as a material for high-temperature thermoelectric conversion elements.

The n-type semiconductor portion 712 includes FeSi ₂ and an n-type additive, for example, Co (cobalt). For example, the n-type semiconductor portion 712 is obtained by adding 2.5 mass% Co based on FeSi ₂ .

  For a more detailed configuration of the thermoelectric conversion element 700, refer to Japanese Patent Application No. 2006-093852 related to the present applicant.

  Then, the p-type semiconductor part 711 and the n-type semiconductor part 712 having the above configuration are configured in a gate shape as shown in FIG.

(About control device)
The control device 400 will be described with reference to FIG.

  As shown in FIG. 16, the control device 400 mounted on the fire truck 10 is connected to the heat sensing cable T41A and detects it as a change in an electrical signal or an optical signal corresponding to the heat detected by the heat sensing cable T41A. A detection unit 401, a voltage conversion circuit 402 that is connected to the fire engine power supply 450 and converts the voltage into a voltage required for driving the control device 400, a control unit 403 that includes a microcomputer and controls each unit, and an external device It includes an interface (I / F) 404 that transmits and receives signals, and a display unit 405 that includes a liquid crystal monitor or the like and displays various types of information.

  In addition, although illustration is abbreviate | omitted, in the control apparatus comprised so that heat sensing cable T4B might be connected, it replaces with connection part 401a, 401b, and the optical connector which can connect optical fiber cable FC is provided.

  In addition, FIG. 16 shows an example in which one heat sensing cable T41A (T41B, T41C) is connected. However, the present invention is not limited to this, and it matches the number of fire hose sets H21 (H21A to H21C) to be laid. A number of heat sensing cables T41A (T41B, T41C) may be connected.

  The detailed configuration of the control device 400 is as shown in FIG.

  In the control device 400 as shown in FIG. 6, the test control signal and the test result are exchanged between the detection unit 401 and the control unit 403, and the heat detection by the heat sensing cable T41A (T41B, T41C) is performed. It is checked whether it is done normally.

  Further, when a temperature abnormality is detected by the detection unit 401, a danger signal is input to the control unit 403. The control unit 403 outputs a state display signal and a danger notification signal to the outside and the display unit 405 via the interface 404 based on the danger signal.

  As a result, the display unit 405 displays that a temperature abnormality has occurred in the approach route P1.

  In addition, a display indicating that a temperature abnormality has occurred in the approach path P1 and a display for checking the monitoring state are performed on an external display panel or the like.

  Further, visual notification by turning on and blinking the LED and acoustic notification by ringing the bell are performed.

  In addition, as a kind of external output, an indication that a temperature abnormality has occurred in the approach path P1 on a portable terminal such as a tablet device connected via a cable or wirelessly such as Wi-Fi or Bluetooth, etc. Can be done. A specific display example is as shown in FIGS. 8 and 9 described above.

  Moreover, the heat sensing process in the heat detection system S2 for fire fighting according to the present embodiment is the same as the heat detection process (see the flowchart in FIG. 7) in the heat sensing system S1 for fire fighting according to the first embodiment.

  Although the invention made by the present inventor has been specifically described based on the embodiments, the embodiments disclosed herein are illustrative in all respects and are not limited to the disclosed technology. Should not be considered. That is, the technical scope of the present invention should not be construed restrictively based on the description in the above embodiment, but should be construed according to the description of the scope of claims. All modifications that fall within the scope of the claims and the equivalent technology are included.

S1, S2 ... Fire detection system C, C1-C3 ... Connector parts H1, H2 (H2a-H2c) ... Fire hoses T1, T2, T41 (T41A-T41C) ... Cable-like heat detector (heat detection cable) )
T4a, T4b ... heat sensing cable module H21 (H21A to H21C) ... fire hose set FC ... optical fiber cable F ... optical fiber 10 ... fire truck 11 ... water outlet 12 ... connection portion 101-104 ... connection fitting 105 ... nozzle 200 ... Take-up device 301 ... Thermocouple wire 302 ... Thermocouple 303 ... Return wire 351 ... Core portion 352 ... Clad portion 353 ... Tube 354 ... Heat resistant resin 400 ... Control device 401 ... Detectors 401a, 401b ... Connector 402 ... Voltage Conversion circuit 403 ... Control unit 404 ... Interface 405 ... Display unit 450 ... Fire engine power supply 500 ... Bubble 600 containing compressed air ... Tablet terminal 601 ... Display 602 ... Operation button 603 ... Speaker 604 ... LED
605 ... Camera 606 ... Microphone 800 ... Thermoelectric conversion element 801 ... Metal plates 802a, 802b, 803a, 803b ... Ag layer 804 ... p-type semiconductor part 806 ... n-type semiconductor part

Claims (11)

Fire hose laid by fire fighters or fire trucks in a desired approach route for water discharge by fire fighters such as firefighters,
A cable-like heat sensor laid along the approach path;
A controller that is connected to the heat sensing tool and determines the presence or absence of temperature abnormality in the approach path based on a detection result by the heat sensing tool;
A heat sensing system for fire fighting, characterized by comprising: The heat sensing tool is
A cable-shaped wire body;
A heat sensor provided at least at a part of the electric wire body at a predetermined interval; and
A connector portion electrically connected to the control device at a terminal of the electric wire body;
The heat sensing system for fire fighting according to claim 1, comprising:   The fire detection heat sensing system according to claim 2, wherein the heat sensor is a thermocouple.   The fire detection heat sensing system according to claim 2, wherein the heat sensor includes a thermoelectric conversion element. The heat sensing tool is
A long optical fiber cable laid in the approach path as a thermal sensor; and
At the end of the optical fiber cable, a connector portion optically connected to the control device,
With
The controller is
Incident means for making pulsed light incident from the input end of the optical fiber cable;
Detection means for receiving backscattered light generated in the optical fiber of the optical fiber cable in response to heat and detecting the temperature of the laying area of the optical fiber cable by an optical time domain reflection measurement method based on the backscattered light When,
The heat sensing system for fire fighting according to claim 2, comprising:   The fire detection heat sensing system according to claim 5, wherein the optical fiber cable is covered with a heat resistant tube.   The fire detection heat sensing system according to any one of claims 1 to 6, wherein the heat sensing tool is wound around a reel-shaped winding device so as to be drawable.   The fire control heat sensing system according to any one of claims 1 to 7, wherein the control device is mounted on the fire engine. The control device further includes communication means for transmitting information regarding the presence or absence of temperature abnormality in the approach route to an external communication terminal,
The fire detection heat sensing system according to any one of claims 1 to 8, wherein the communication terminal includes a portable terminal carried by a fire extinguisher such as the firefighter. A fire hose applied to the fire detection heat sensing system according to any one of claims 1 to 9,
A fire hose characterized in that a cable-shaped heat detector is integrally provided along the longitudinal direction.   The fire hose according to claim 10, wherein the cable-shaped heat detection tool is configured to be connectable via a connector in accordance with the length of the fire hose itself.

Images