JP3847004B2 - Fire extinguishing system for multistory parking - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas fire extinguishing system that extinguishes a fire in a mechanical multistory parking lot.
[0002]
[Prior art]
In recent years, mechanical multistory parking lots (hereinafter referred to as “parking lots”) are increasing from the viewpoint of effective use of land. There are two types of mechanical multistory parking lots: elevator, vertical circulation, and horizontal / multistage circulation. For example, in elevator multistory parking, a pallet carrying vehicles is lifted and lifted on a multistage parking stage. It is moved on the transport rail and parked efficiently. For this reason, the entire parking lot forms one large space without partitioning each parking stage with a wall so that the pallet can move freely. The vertical parking type horizontal / multistage circulation method is different in the method of transportation, but the entire parking lot similarly forms one large space.
[0003]
Conventionally, in order to introduce a gas-based fire extinguishing system in a parking lot, the fire extinguishing gas must be filled over the entire large space of the parking lot, and a large-capacity cylinder that can eject a large amount of gas is required. For this reason, the conventional fire extinguishing system has installed a cylinder outside the building of the parking lot, and provided a pipe for conducting the fire extinguishing gas from the cylinder to the nozzles dispersedly installed at appropriate locations in the parking lot. In addition, a fire sensor is provided at an appropriate place in the parking lot, and when a fire is detected, an alarm buzzer notifies the parking lot manager of the occurrence of the fire.
[0004]
And when a fire occurs in a parking lot, the manager of a parking lot performs starting operation of a fire extinguishing apparatus. Then, the fire extinguishing apparatus sent the fire extinguishing gas to the nozzle in the parking lot through a pipe from a cylinder installed outside the building, and jetted the fire extinguishing gas from the nozzle. And the fire is extinguished when the fire extinguishing gas is filled in the parking lot.
[0005]
[Problems to be solved by the invention]
However, the mechanical multistory parking lot is intended to make effective use of space so that as many cars as possible can be parked on a narrow land. For this reason, the mechanical multistory parking lot is installed in a relatively small place, and it is often difficult to secure a space for installing the cylinder outside the building. For this reason, there was a problem that a gas fire extinguishing system could not be installed.
[0006]
In addition, in order to introduce the fire extinguishing system, piping work from the cylinder to the nozzles dispersedly arranged in the parking lot is necessary, which causes a problem that the cost of introducing the fire extinguishing system increases.
[0007]
Furthermore, when a fire has occurred from inside the parked vehicle, it may take time to fill the vehicle with the fire extinguishing gas even if the fire extinguishing system is activated. In addition, the gas fire extinguishing system uses a gas heavier than air, such as carbon dioxide gas or HFC-23 (trifluoromethane gas), so that the fire extinguishing gas once filled in the large space of the parking lot settles with time. However, the concentration of the upper extinguishing gas becomes lean. That is, when a certain period of time elapses after the fire extinguishing gas is injected, the concentration of the extinguishing gas that can be extinguished (hereinafter referred to as “extinguishing concentration”) cannot be maintained at the upper stage of the parking lot. For this reason, for example, a fire that seemed to have extinguished from an automobile parked in the upper stage and then extinguished once had a risk that the concentration of the upper extinguishing gas would be less than the extinguishing concentration and burn again. In order to cope with this, in the conventional fire extinguishing system, in order to increase the concentration of the fire extinguishing gas in the parking lot, the fire extinguishing gas is injected more than necessary over the entire parking lot. In other words, a large amount of high-concentration fire extinguishing gas has to be injected from all the nozzles arranged in the parking lot, and the use efficiency of the fire extinguishing gas is poor.
[0008]
The present invention has been made to solve these problems, and is consistent with the concept of a mechanical multi-story parking garage called effective land use, eliminates the need for piping work, and improves the use efficiency of fire extinguishing gas. The purpose is to provide an extinguishing system for parking lots.
[0009]
[Means for Solving the Problems]
A fire sensor that detects a fire that has occurred in a mechanical multistory parking lot, a plurality of fire extinguishing devices that have a fire extinguishing gas cylinder filled with a fire extinguishing gas, and a nozzle that injects the fire extinguishing gas, and a fire detection signal from a fire sensor is received And a control panel having a start switch for remotely starting the plurality of fire extinguishing devices, the fire extinguishing devices are distributed over the top and bottom of the mechanical multistory parking lot, and are disposed on the top of the mechanical multistory parking lot. Provided is a fire extinguishing system in which the fire extinguishing apparatus has a larger amount of fire extinguishing gas injection than the fire extinguishing apparatus disposed in the lower part .
[0010]
As a result, it is possible to eliminate the space for installing the fire extinguishing gas cylinder outside the mechanical multistory parking lot that forms a large space, and piping work is not necessary. Since all the fire extinguishing devices can be activated at the same time simply by operating the activation switch on the control panel, it is possible to instantaneously fill the fire extinguishing gas into the large-scale mechanical multistory parking lot.
[0011]
The fire extinguisher can have a fire extinguishing gas cylinder that is activated almost simultaneously with the operation of the activation switch, and a fire extinguishing gas cylinder that is activated after a predetermined time has elapsed.
[0012]
Furthermore, the fire extinguishing device arranged at the upper part of the mechanical multistory parking lot can increase the amount of the fire extinguishing gas injected by the fire extinguishing gas cylinder activated after the predetermined time has passed, compared to the fire extinguishing device arranged at the lower part.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
【Example】
Embodiments of a parking lot fire extinguishing system according to the present invention will be described below with reference to the drawings.
[0014]
FIG. 1 is a cross-sectional view of an elevator type multilevel parking lot. The parking lot 1 is provided with parking stages 2 on the left and right of each stage on the eighth stage on the ground. When entering the warehouse, the manager of the parking lot 1 operates the parking system control panel 7 to place the automobile on the pallet 3 from the entrance / exit 9. Then, the vacant parking stage 2 is selected by the parking system control panel 7, the pallet 3 on which the vehicle is placed is moved by the lifting lift 8 and a rail (not shown), and the selected parking stage 2 is selected. Parked in.
[0015]
In the parking lot 1, a fire sensor 5 such as a heat detector or a smoke detector is appropriately installed. In addition, fire extinguishing apparatuses 4 storing gas cylinders of fire extinguishing gas, for example, HFC-23 (trifluoromethane), are installed in the first tier, the third tier, the sixth tier, and the eighth tier in the parking lot 1.
[0016]
FIG. 2 shows the overall configuration of the fire extinguishing system. In the figure, in the fire extinguishing system, a plurality of fire sensors 5 and a plurality of fire extinguishing devices 4 are connected to a control panel 6 by wire, and exchange a fire signal, a start signal, a device state monitoring signal, and the like.
[0017]
The control panel 6 includes a sensor I / F 61 from which the fire sensor 5 receives a fire occurrence detection signal, a display unit 62 for notifying the manager of the parking lot 1 by a lamp display and a buzzer sound, etc. From the start switch 63 for starting the fire extinguishing device 4, the fire extinguishing device I / F 64 communicating with the fire extinguishing devices 4A, 4B, 4C, and 4D installed in a predetermined stage of the parking lot 1, The control unit 65 includes a CPU that processes the above signals, and a power source 66 that supplies power to each of the units.
[0018]
FIG. 3a is a configuration diagram of the fire extinguishing apparatus 4, and a lid is omitted. FIG. 3 b is a side view of the fire extinguishing device 4. The fire extinguishing apparatus 4 stores a predetermined number (five in this embodiment) of cylinders 43 filled with HFC-23 (trifluoromethane) as a fire extinguishing gas. The number of cylinders may be appropriately determined according to the installation space of the fire extinguishing apparatus 4. In the cabinet 42, a relay 41 that performs start-up control of the fire extinguishing device 4 based on a signal from the control panel 6, a nozzle 433 that jets the fire extinguishing gas in the cylinder 43 into the parking lot 1, and the fire extinguishing gas in the cylinder 43. Are connected to the nozzle 433, and an opening means 431 for opening the sealing plate of the cylinder 43 under the control of the relay 41.
[0019]
The cabinet 42 is fixedly installed on the wall surface or structure of the parking lot 1. Further, the opening means 431 and the repeater 41 are connected by a connector so that, for example, up to five cylinders 43 can be stored in the cabinet 42. If only three cylinders 43 are to be stored in the cabinet 42, a three-storing cabinet may be used. Moreover, what is necessary is just to remove two connectors, when using this storage cabinet. Although not shown, a magnet sensor for detecting the open / close state of the lid of the cabinet 42 and a gas pressure sensor for monitoring the gas pressure in the cylinder 43 are also housed and connected to the repeater 41 by wire. .
[0020]
The fire extinguishing devices 4A, 4B, 4C, and 4D are installed in the first, third, sixth, and eighth stages, respectively. The fire extinguisher 4D installed in the eighth stage has five cylinders, the fire extinguishers 4C and 4B installed in the sixth and third stages have four cylinders, and the fire extinguisher 4A installed in the first stage has three cylinders. Contains books. In addition, according to the form of the parking lot 1, the arrangement of the fire extinguishing apparatus 4 determines an installation location, the capacity | capacitance of the cylinder 43, the number, etc. suitably.
[0021]
Next, the repeater 41 will be described with reference to the block diagram of FIG. The repeater 41 includes a communication I / F 411 that performs communication with the control panel 6, a lid 42 open / closed state detection sensor (not shown), a gas pressure sensor of the cylinder 43, a disconnection detection sensor of the connector cable 416, and the like. A sensor I / F 412 that receives an input, a gas injection activation unit 413 that activates the unsealing means 431, a control unit 414 that controls these, and a power source 415 that supplies power to them are configured.
[0022]
Next, operation | movement of the fire extinguishing system comprised in this way is demonstrated. Assume that a fire has occurred at parking lot 1. When a fire occurs, the nearest fire sensor 5 detects the fire, and a fire signal is input from the fire sensor 5 to the sensor I / F 61 of the control panel 6. When a fire signal is input to the control panel 6, the fire occurrence lamp of the display unit 62 is turned on and a buzzer is sounded. The manager of the parking lot 1 knows that a fire has occurred from this buzzer or lamp display, and operates the activation SW 63. This activation signal is sent from the fire extinguisher I / F 64 to all the repeaters 41 of the fire extinguisher 4.
[0023]
When receiving the start signal from the communication I / F 411, the repeater 41 starts the three cylinders 43 from the control unit 414 to the opening means 431 from the gas injection start unit 413 and starts the timer. . At this time, the fire extinguishing apparatus 4D installed in the eighth stage immediately opens only the three cylinders 43, and the remaining two cylinders 43 are not activated. Further, the third and sixth-stage fire extinguishing devices 4B and 4C immediately activate only the three cylinders 43, and the remaining one cylinder 43 is not activated. The fire extinguishing device 4D installed in the first stage immediately activates all three cylinders 43. When each cylinder 43 is opened, the fire extinguishing gas is completely injected from the nozzle 433 through the connecting pipe 432. The fire extinguishing gas injected fills the parking lot 1. At this time, the injection amount of the cylinder 43 is set in advance so that the concentration of the extinguishing gas is, for example, about 13% to 24% which is equal to or higher than the extinguishing concentration. Once filled, the fire extinguishing gas has a specific gravity greater than that of air, and therefore gradually settles. Considering the settling speed of the fire extinguishing gas, the undepressed cylinder 43 of the fire extinguishing devices 4B, 4C, and 4D is opened by providing a predetermined delay time after the opening of the first cylinder 43. The predetermined time that is the opening delay time of the cylinder 43 is determined in consideration of the settling speed of the fire extinguishing gas and the installation height of the fire extinguishing device 4. That is, the predetermined time is set shorter as the settling speed of the fire extinguishing gas is faster, and the predetermined time is set longer as the settling speed of the fire extinguishing gas is slower.
[0024]
Then, when the timer measures the delay time, the 8th, 6th, and 3rd stage fire extinguishing devices 4B, 4C, and 4D activate the remaining cylinders 43 from the gas injection activation unit 413. As a result, the fire extinguishing gas once filled in the parking lot 1 settles, and the fire extinguishing gas can be re-injected into the upper portion of the parking lot 1 before the flame extinguishing concentration decreases over time. Since the gas extinguishing concentration or higher can be maintained, it is possible to surely extinguish a smoldering fire without extinguishing the fire.
[0025]
In addition, since the fire extinguishing gas which exists in the upper stage sinks, the flame density of the fire extinguishing gas does not decrease in the lower stage space, and it is not necessary to additionally inject. Therefore, the amount of fire extinguishing gas to be injected is smaller as the fire extinguishing device installed at the lower stage in the parking lot 1, and the amount of fire extinguishing gas that can be ejected becomes larger as the fire extinguishing device installed at the upper stage. For this reason, it is possible to suppress the necessary and sufficient extinguishing of the fire extinguishing gas compared to the case where a large amount of the fire extinguishing gas is jetted in all places without considering the fire extinguishing gas jetting places such as the upper stage and the lower stage as in the past. It can be done.
[0026]
In this embodiment, the fire extinguishing gas is injected with a delay time. However, the present invention is not limited to this. For example, the fire extinguishing gas concentration at each stage in the parking lot 1 is measured by a concentration sensor, and the fire extinguishing gas is measured. You may control the injection quantity of fire extinguishing gas so that a density | concentration may become a flame extinguishing density or more.
[0027]
In the present embodiment, the elevator type multi-level parking lot has been described. However, the present invention is not limited to this, and the present invention can be applied to any mechanical multi-level parking lot such as a vertical circulation type and a horizontal / multistage circulation type.
[0028]
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a mechanical multilevel parking garage. FIG. 2 is an overall configuration diagram of a fire extinguishing system according to the present invention. FIG. 3 is a configuration diagram of a fire extinguishing device. Explanation of]
1 ... Mechanical multilevel parking 2 ... Parking stage 3 ... Pallet 4 ... Fire extinguishing device 41 ... Repeater 411 ... Communication I / F
412 ... Sensor I / F
413 ... Gas injection starting part 414 ... Control part 415 ... Power supply 42 ... Cabinet 43 ... ... Cylinder 431 ... ... Opening means 432 ... ... Connecting pipe 433 ... ... Nozzle 5 ... ... Fire sensor 6 ... Control panel 61 ... Sensor I / F
62 ... …… Display unit 63 …… Start switch 64 ………… Fire extinguishing device I / F
65 ......... Control means 66 ......... Power supply 7 ......... Parking system control panel 8 ...... Elevator lift 9 ...... Entry / exit entrance

Claims (3)

A fire sensor for detecting a fire that has occurred in a mechanical multistory parking lot;
A plurality of fire extinguishing apparatuses having a fire extinguishing gas cylinder filled with a fire extinguishing gas and a starting means for the fire extinguishing gas cylinder;
Comprising a notifying means for notifying when receiving a fire detection signal of the fire sensor and a control panel having a start switch for starting the plurality of fire extinguishing devices;
The fire extinguishing device is distributed over the upper and lower sides of the mechanical multistory parking lot, and the fire extinguishing device arranged at the upper part of the mechanical multistory parking lot is more injected with the fire extinguishing gas than the fire extinguishing device arranged at the lower part. Fire extinguishing system characterized by increasing 2. The fire extinguishing system according to claim 1, wherein the fire extinguishing device includes a fire extinguishing gas cylinder that is activated almost simultaneously with an operation of a start switch, and a fire extinguishing gas cylinder that is activated after a predetermined time has elapsed. The fire extinguishing device arranged at the upper part of the mechanical multistory parking lot has a larger amount of fire extinguishing gas injected by the fire extinguishing gas cylinder activated after the predetermined time than the fire extinguishing device arranged at the lower part. The fire extinguishing system according to claim 2.

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