JPH024693Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a fire extinguishing system using a fire extinguishing agent discharge nozzle called a turret nozzle, monitor nozzle or water cannon.

Conventional fire extinguishing equipment of this type uses extinguishing agent discharge nozzles called turret nozzles, monitor nozzles, or water cannons that can freely rotate horizontally, vertically, and horizontally to extinguish objects such as plant equipment, tank bases, sea berths, buildings, and tunnels. In the event of a fire, the extinguishing agent discharge nozzle can be directly rotated manually, or remotely rotated using a control stick from a position where the discharge nozzle and the object to be extinguished can be visually confirmed, and the nozzle aiming point can be set to the fire point. The system stipulates that extinguishing agents such as powder, foam, or water are released. However, with this type of fire extinguishing system, the extinguishing agent discharge nozzle must be operated near the fire point, whether it is operated manually or remotely using a control stick, and the operator must always be on the lookout for fire or explosion. was at risk of. In addition, when remotely controlling the extinguishing agent discharge nozzle using a control stick, the distance between the operator and the nozzle makes it difficult to aim the nozzle at the fire point, which takes time. A major drawback was that it took time for the fire to reach the discharge nozzle or its operating rod, making it impossible to extinguish the fire in its early stages.

In consideration of the above points, this idea divides the object to be extinguished into multiple fire extinguishing areas, installs television cameras to monitor these multiple extinguishing areas, and monitors any area where a fire has occurred among these multiple extinguishing areas. A fire extinguishing agent discharge nozzle is installed in the area, and the fire extinguishing area where the fire has occurred is determined based on images from a television camera, and the fire extinguishing agent discharge nozzle is aimed at that area and the extinguishing agent is discharged. By doing so, we have developed a simple and economical configuration that can safely aim the fire extinguishing agent discharge nozzle at the point where the fire broke out without exposing you to the danger of fire or explosion in the early stages of a fire. It provides fire extinguishing equipment.

An embodiment of this invention will be described below with reference to the drawings.

In Fig. 1, 1 is the object to be extinguished. For example, if the object 1 to be extinguished is LNG plant equipment,
Each area where fire is likely to occur, such as the vapor riser, pressure adjustment section, and pipe connection section, is divided into multiple fire extinguishing areas A to F, each with one fire extinguishing area. 2 is a television camera that monitors the object 1 to be extinguished by rotating left, right, up and down by a remotely controlled rotation device 21;
Turrets 3 and 4 rotate horizontally, vertically, and vertically by remotely controlled rotation devices 31 and 41 to aim the discharge at any one of the plurality of fire extinguishing districts A to F of the object 1 to be extinguished. A fire extinguishing agent discharge nozzle 5, which is referred to as a nozzle, monitor nozzle, or water cannon, is a fire extinguishing agent supply source that supplies a fire extinguishing agent such as powder, foam, or water to the discharge nozzles 3 and 4. 6 is a control device installed in a disaster prevention center 7 such as a central management center;
This control device 6 includes a receiver 61 that receives images from the television camera 2, and a rotation device 2 for the television camera 2.
1, a nozzle control unit 63 that controls the rotating devices 31 and 41 of the extinguishant discharge nozzles 3 and 4, and a nozzle control unit 63 that controls the extinguishant supply source 5 to supply extinguishing agent to the discharge nozzles 3 and 4. A release control unit 64 that supplies
and an operation panel 65 provided with control switches for these control units 62 to 64.
Reference numeral 8 denotes a fire receiver that receives a fire signal from a fire detector or a manual notification device (not shown) provided in the object 1 to be extinguished and a notification from an emergency telephone.

FIG. 2 shows one embodiment of the operation panel 65 of the control device 6, where a to f indicate which fire extinguishing district the image on the receiver 61 is from, and _S1 indicates the rotation of the television camera 2. A camera rotation switch that controls the rotation device 21, Sa to Sf are nozzle aiming switches that control the rotation devices 31 and 41 of the extinguishant discharge nozzles 3 and 4, and _S2 is a discharge control switch that controls the extinguishant supply source 5. It is.

Next, the operation of this fire extinguishing system will be explained.

The camera rotation switch _S1 of the operation panel 65 is turned on to cause the camera control section 62 to output a rotation signal to the rotation device 21, thereby operating the rotation device 21. As a result, the TV camera 2 rotates and fires the object 1 to be extinguished.
The images of each part are sequentially sent to the receiver 61. Furthermore, the rotation device 21 outputs a district signal indicating which fire extinguishing district the camera 2 is transmitting the image of to the receiver 61 to the camera control unit 62, and the control unit 62 determines which fire extinguishing district it is from the district signal. Based on the determination, the corresponding district indicator lights a to f on the operation panel 65 are controlled to turn on, and the screen of the receiver 61 displays which fire extinguishing district is currently in.

In such a state, when the fire detector of the object to be extinguished 1 is activated and the fire receiver 8 is displayed and notified that a fire has occurred in the object to be extinguished 1, the manager uses the receiver 61 to The object 1 to be extinguished is monitored, and when the screen of the fire scene is displayed on the receiver 61, the camera rotation switch _S1 is turned off and the rotation signal output of the camera control section 62 is stopped. By stopping the output of this rotation signal, the rotation device 21 stops rotating, and the shooting aim of the camera 2 is fixed. At this time, if the shooting aim of the camera 2 is fire-fighting district B, the control unit 62 turns on the district indicator light b according to the district signal output from the rotation device 21, and the screen of the receiver 61 changes to the screen of fire-fighting district B. . When this area indicator light b turns on, the nozzle 4 aiming switch Sb is turned on in order to discharge the extinguishing agent to the corresponding fire extinguishing area B. When this switch Sb is turned on, the nozzle control unit 63 is activated, and the aiming control signal is sent to the rotating device 31 of the extinguishing agent discharge nozzle 3 which is in charge of extinguishing fire in the B fire-fighting area.For example, if the circuit device 31 is composed of a pulse motor, the B It outputs two pulse signals indicating the area, and also outputs a selection signal for the nozzle 3 to the discharge control section 64. This aiming control signal operates the rotating device 31 to rotate the extinguishing agent discharge nozzle 3, and when the aim of the nozzle 3 is directed towards the B fire extinguishing area, the rotating device 31 stops operating and causes the nozzle 3 to aim its discharge. B
Fixed in fire extinguishing area. and release control switch S ₂
When turned on, the discharge control section 64 is activated by turning on this switch _S2 and the above selection signal, and outputs a discharge control signal to the extinguishing agent supply source 5 for supplying extinguishing agent to the extinguishing agent discharge nozzle 3. In response to this release control signal, the extinguishing agent supply source 5 pressurizes the extinguishing agent and supplies it to the extinguishing agent discharge nozzle 3, and causes the extinguishing agent to be discharged from the discharge nozzle 3 to the B fire extinguishing area.

By the way, in the above embodiment, a common extinguishing agent discharge nozzle is provided for a plurality of fire extinguishing districts, and this extinguishing agent discharge nozzle is rotated by a rotation device to discharge extinguishing agent to the fire extinguishing district where a fire has occurred. However, each extinguishing agent discharge nozzle with a fixed discharge target is provided for each fire extinguishing district, and the discharge target is fixed to the fire extinguishing district where the fire occurred from among the extinguishing agent discharge nozzles with different targets. A fire extinguishing agent discharge nozzle may be selected and the fire extinguishing agent may be discharged from the discharge nozzle. Alternatively, the TV camera may be fixed in such a way that it can take pictures of multiple fire extinguishing areas at the same time without rotating, and the images from this fixed TV camera may be monitored by a receiver to determine the fire extinguishing area where a fire has occurred. good. In this case, in order to determine the fire extinguishing area where a fire has occurred from the screen of the receiver and control the extinguishing agent discharge nozzle, it is necessary to indicate which part of the screen is located under the screen of the receiver 61 and which fire extinguisher, as shown in FIG. A district identification board is provided to indicate which area the area falls under, and a nozzle aiming switch Sa to Sf corresponding to the fire extinguishing district is provided under each division of this district identification board.
This area identification board is used to determine which fire extinguishing area the fire spot shown on the screen of the receiver 61 belongs to, and the aiming switch located below the fire extinguishing spot is operated to control the extinguishing agent discharge nozzle. Bye. Alternatively, the television camera may be normally kept inactive, and when the fire receiver receives a fire signal, the television camera may automatically start photographing the object to be extinguished under the control of this fire signal. The extinguishing agent may also be sprayed around the discharge target by using a nozzle that swings around the discharge target depending on the supply pressure of the extinguishing agent. Furthermore, if there is a risk that the extinguishing agent discharged from the extinguishing agent discharge nozzle may be deflected by the wind, a measuring device that measures the wind direction and wind speed and a calculation device that calculates the degree of deflection from the measured values of this measuring device are installed. A deflection measuring section consisting of the following may be provided, and the discharge aim of the fire extinguishing agent discharging nozzle may be corrected automatically or by an operation panel based on the measurement results of the deflection measuring section.

According to this invention, with a simple and economical configuration, objects to be extinguished such as plant equipment, sea berths, tank bases, tunnels, and buildings can be divided into multiple fire extinguishing districts, with each fire-prone area designated as one fire extinguishing district. , TV cameras are installed to monitor these multiple fire extinguishing areas, and fire extinguishing agent discharge devices such as turret nozzles, monitor nozzles, or water cannons are used to discharge extinguishing agent into one of the multiple fire extinguishing areas where a fire has occurred. A nozzle was installed, and the fire extinguishing area where the fire occurred was determined by images sent from a television camera, and the extinguishing agent discharge nozzle was aimed at that area and the extinguishing agent was released, so that the fire could be detected at the initial stage. To provide a fire extinguishing device that can safely and reliably discharge a fire extinguishing agent to a fire site and quickly extinguish a fire without being exposed to the danger of fire or explosion.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of one embodiment of the fire extinguishing system according to this invention, and FIGS. 2 and 3 are external views of different embodiments of the control device. 1... Object to be extinguished, A to F... Fire extinguishing area, 2...
...TV camera, 21...Camera rotation device, 3,
4... Extinguishing agent discharge nozzle, 31, 41... Nozzle rotation device, 5... Extinguishing agent supply source, 6... Control device, 61... Image receiver, 62... Camera control unit, 6
3... Nozzle control section, 64... Release control section, 65
...Operation panel, 8...Fire receiver, a to f...
District indicator light, Sa~Sf...nozzle aiming switch,
S ₁ ... Camera rotation switch, S ₂ ... Release control switch.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A television camera that divides the object to be extinguished into a plurality of fire extinguishing areas and monitors the multiple fire extinguishing areas either sequentially while rotating or simultaneously in a fixed state; a fire extinguishing agent discharge nozzle that discharges extinguishing agent into the fire extinguishing area; a receiver that receives images from the television camera; In order to identify the district, there is a means for determining the fire extinguishing district where the fire occurred, such as a district indicator light or a district identification board installed near the video screen, and a fire extinguishing agent discharge nozzle aiming point provided to correspond to this determination means. A fire extinguishing device comprising: a switch; and a control means that uses the nozzle aiming switch to aim the discharge of the nozzle at a fire extinguishing district where a fire has occurred. 2. The fire extinguishing system according to claim 1, wherein a fire extinguishing agent discharge nozzle is provided for each fire extinguishing district, and a specific fire extinguishing agent discharge nozzle is selected by a control means. 3. The extinguishing agent discharge nozzle has a rotating mechanism that rotates and aims the discharge at one of the fire extinguishing areas, and the control means controls the rotation of the rotating mechanism and the control unit that controls the discharge of the extinguishing agent. A fire extinguishing system according to claim 1, which comprises a release control section.