JP4006738B2 - Fire extinguishing equipment for parking lots - Google Patents

Description

  The present invention relates to a fire extinguishing facility for a parking lot installed in the parking lot in order to extinguish a vehicle fire in the parking lot.

Conventionally, a parking lot is provided with a fire extinguishing facility in case a fire occurs in a vehicle parked in the parking lot. The fire extinguishing equipment in this parking lot is provided with an appropriate arrangement of a spraying head for spraying fire extinguishing agent toward the fire vehicle according to the structure of the parking lot, and the fire extinguishing agent is applied from the spraying head when a vehicle fire occurs. It is designed to extinguish vehicle fires by spraying on fire vehicles.
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  In the fire extinguishing equipment of a parking lot, the installation position of the spraying head may be limited due to the structure of the parking lot. In particular, in a fire extinguishing facility for a mechanical parking lot, the parking lot has a mechanically movable part in its configuration, and therefore, a spraying head must be installed in a narrow space avoiding the movable part.

  In addition, in conventional fire extinguishing equipment for parking lots, the spraying range of each spraying head is circular, so even if these circular spraying ranges are combined, depending on the resulting spraying range, a rectangular vehicle must be extinguished. It is difficult to reliably cover with an agent, and it is difficult to extinguish a vehicle fire efficiently.

  In view of the above circumstances, the present invention is to make it possible to reliably cover a fire vehicle with a fire extinguishing agent in a fire extinguishing facility in a parking lot and to efficiently extinguish a vehicle fire.

  The present invention for achieving the above object will be described as follows.

That is, the present invention is a low-foaming foam aqueous solution that is installed in a parking lot in which a plurality of parking spaces are parked side by side, and in which a water film forming foam is mixed with the vehicle parked in the parking space. A fire extinguishing system having a closed type spraying head not provided with a foaming means for spraying the foaming device, wherein the closed type spraying head collides the foam aqueous solution discharged from the discharge port with a flat plate-shaped deflector, and the deflector The foam aqueous solution is dispersed in the form of liquid droplets while being guided by a guide portion formed on the outer peripheral portion of the foam, and is dispersed in the parking space, thereby forming a water film by the foam aqueous solution. Fire extinguishing equipment for parking lots.

Further, according to the present invention, the discharge port of the closed-type spraying head is cylindrical, and the deflector of the closed-type spraying head is a rectangular flat plate, and a guide part and a slit are provided on the outer periphery of the collision part at the center. The parking lot fire extinguishing equipment is characterized in that a plurality of slits are arranged radially from the center of the deflector to form a rectangular spreading range larger than the respective size of the parking space. .

  According to the present invention, since the aqueous foam solution is dispersed and dispersed in the form of droplets, the flight distance can be greatly increased as compared with the case where the aqueous solution is dispersed in the form of bubbles and thus the fire extinguishing range is expanded. Thus, the fire vehicle can be reliably covered, and the vehicle fire can be extinguished efficiently.

  In addition, according to the present invention, since the foam aqueous solution mixed with the water film-forming foam extinguishing agent is dispersed and dispersed in the form of droplets, the foam aqueous solution is directly jumped into the flame to reach the surface of the fuel. Thus, a water film can be easily formed on the surface of the fuel, whereby the fire vehicle can be reliably covered and the vehicle fire can be extinguished efficiently.

  In addition, according to the present invention, the deflector of the spray head is a rectangular flat plate, and a rectangular spray range larger than each size of the parking space is formed, so that the fire vehicle can be reliably secured by the large rectangular spray range. It can cover and can extinguish a vehicle fire efficiently.

  Embodiments of the present invention will be described with reference to the accompanying drawings. Note that the same reference numerals have the same names and functions.

  As shown in FIGS. 1-3, in the mechanical parking lot 1, the parking space 2 where the vehicle MC is parked is formed on the pallet 2a, and a plurality of the pallets 2a are provided side by side to provide a row 3 of parking spaces. Further, the row 3 of the parking spaces is provided in multiple layers. In addition, the side of the row 3 of the parking space is provided with a transport path for the traveling carriage 5 that slides on the rail 4, and the transport path 6 is connected to the vertical path 9 of the elevator 8.

  Closed spray heads 16 for spraying a fire extinguishing agent on the vehicle MC parked in the parking space 2 are respectively positioned above the center 2b of each of the parking spaces 2, and further, both ends of the row 3 of the parking spaces. 3a and 3b are respectively located above the center.

  In addition, in order to spray a fire extinguishing agent on the vehicle MC parked in the uppermost parking space 2, the closed spray head 16 a is installed on the ceiling surface 1 a of the parking lot 1. It is installed following the position.

  As a raw material of the fire extinguisher sprayed from the closed spray head 16, a foam fire extinguishing agent, for example, a protein foam fire extinguishing agent or an interfacial foam fire extinguishing agent may be used. Use extinguishing agent. In addition, as this water film-forming foam fire extinguishing agent, for example, “Light Water (trade name—3M (USA), etc.)”, “Megafoam F-623 (trade name—Dainippon Ink Chemical Co., Ltd.)”, etc. Is used. These foam fire extinguishing agents are made up of foaming stabilizers, water-soluble polymers, freezing inhibitors, etc. in addition to fluorine-based surfactants, and extinguish 3-4 times compared to protein foam interfacial fire extinguishing agents and interfacial foam extinguishing agents. Demonstrate the effect.

  Further, the closed-type spraying head 16 is connected to a piping system having a configuration for spraying a foam aqueous solution obtained by mixing the water film-forming foam fire-extinguishing agent and fire-extinguishing water, although not shown. This piping system adjusts the water pressure of the water for fire extinguishing, the tank for storing the water film foam extinguishing agent, the pump for pumping out the water for fire extinguishing, and the water pressure of the fire extinguishing water being pumped And a mixer for mixing fire-extinguishing water and water film-forming foam fire-extinguishing agent.

  Furthermore, as shown in FIG. 4, the closed spray head 16 has rectangular spray ranges AR <b> 1 and AR <b> 2 that are larger than the size of the parking space 2.

  The closed spraying head 16 may have any rectangular spraying range larger than the size of the parking space 2, but in the present embodiment, a head configured as shown below is used.

  That is, as shown in FIGS. 5 to 7, the closed-type spraying head 16 includes a valve body 18 that closes the discharge port 19, and a fast-acting fire detection operation member that has a small heat capacity and presses the valve body 18 against the discharge port 19. 20 and a deflector 22 fixed to the arm 21.

  The valve body 18 is in pressure contact with the discharge port 19 via the packing 23. The fire detection actuating member 20 is a glass valve composed of a glass tube 20b and an alcohol 20a sealed in the glass tube 20b. When the alcohol 20a expands due to heat, the glass tube 20b is broken and the function of supporting the valve body 18 is achieved. Lose. At this time, the thermal responsiveness differs depending on the size of the glass bulb, and it becomes a fast-acting type by becoming a thin type.

  The deflector 22 is a rectangular flat plate, and guide portions 26a to 26c, 28a and 28b and slits 25a to 25c, 27a and 27b are formed on the outer periphery of the collision portion 24 at the center.

  Each slit 25a-25c, 27a, 27b is located on the straight line which passes along the center O of the deflector 22, respectively, and adjacent slits are mutually arrange | positioned radially. Although the slits 27a and 27b on the long side L side of the rectangular flat plate are formed shorter than those of the slits 25a to 25c on the short side S side, the depth and width of the slits are appropriately selected as necessary.

  The tips of the rectangular short side S-side guide portions 26 a and 26 b are located on the short side S. The central portion on the long side L side of the rectangle is concave, and the length of the central guide portions 28a and 28b is shorter than that of the diagonal guide portions 26c and 26c at both ends thereof. This is to suppress the scattering distance in the guide direction of the guide portions 28a and 28b.

  In this deflector 22, the short side S side guide portions 26a, 26b and the long side L side diagonal guide portions 26c are longer than the long side L side guide portions 28a, 28b. The scattering distance is longer than that of the guide portions 28a and 28b, and a rectangular scattering range is formed as a whole.

  Reference numeral 29 denotes a fixing member for attaching the deflector 22 and the glass bulb 20 to the arm 21, and this member 29 projects on the deflector 22 during spraying, and thus serves as a cone.

  Next, the operation of this embodiment will be described.

  When a fire occurs in the vehicle MC parked in the parking lot 1, the thermal airflow due to the fire rises to the lower surface of the pallet 2 a, and when the hot airflow divided into right and left along the lower surface reaches the closed spray head 16, The closed-type spraying head 16 receives heat from the hot air flow, the alcohol 20a in the glass bulb 20b having a small heat capacity expands, the glass tube 20b breaks quickly, and the valve body 18 falls. Thereby, the discharge port 19 is opened, and a foam aqueous solution formed by mixing water for fire extinguishing supplied from a piping system (not shown) and a foamed water film-extinguishing chemical is discharged. In this way, the thermal airflow from the vehicle MC spreads left and right by the bullet 2a and releases the fire extinguishing agent from the left and right heads 16, thus effectively covering the vehicle MC and preventing the fire from spreading to adjacent vehicles. Is also big.

In addition, when this foam aqueous solution is supplied to the closed type dispersion | distribution head 16 , it adjusts to predetermined pressure by the pressure regulation function in the piping system which is not shown in figure.

The foam aqueous solution discharged from the discharge port 19 collides with the fixing member 29 and the collision portion 24 of the deflector 22 and scatters while being guided by the guide portion.

At this time, the closed-type spraying head 16 is not provided with foaming means, and the foam aqueous solution is also low foaming, so that the foam aqueous solution hardly swells and scatters in the form of droplets. Therefore, since the flight distance can be extended significantly compared with the case where it is scattered in the form of bubbles, the fire extinguishing range can be expanded.

  That is, the aqueous foam solution colliding with the deflector 22 is directly dispersed as droplets and scattered in the direction of the arrow X while being guided by the guide portions 26a to 26c, 28a and 28b, but the guide portions 26a to 26c are guided. Since it is longer than the portions 28a and 28b, the distance of the former is longer, that is, it flies far away.

  Further, the aqueous foam solution also falls in the direction of the arrow Z from the slits 25a to 25c, 27a, and 27b, but the flight distance is shorter than that of the guide portions 26a to 26c, 28a, and 28b. As shown in FIG. 4, the spraying range formed by the deflector 22 is rectangular, for example, as spraying ranges AR1 and AR2 indicated by diagonal lines, and forms a spraying range that covers the fire vehicle MC from the left and right. Note that a part of AR3 is overlapped so that there is no gap between both of the spraying ranges AR1 and AR2.

  Further, as described above, the foam aqueous solution sprayed from the closed spray head 16 jumps directly into the flame and arrives at the fuel surface, so that a water film is easily formed on the fuel surface, This water film is expanded to cover the entire fuel and extinguish the suffocation. The water film is spread very quickly and reaches every corner of the fuel surface, so that effective fire extinguishing can be performed.

  In addition, this invention is not limited to the said embodiment, The said embodiment demonstrated to the example the mechanical parking lot which provided the pallet 2a which forms the parking space 2 in multiple layers, but parking space If it is a parking lot formed side by side, the fire extinguishing equipment according to the present invention may be provided in a flat parking lot.

  Further, an open type spray head may be used instead of the closed type spray head 16. However, in this case, it is necessary to provide the fire detection head at an appropriate position and provide a corresponding selection valve in the pipe. Furthermore, if the fire detection of each vehicle can be performed, the selection valve may be operated based on the signal.

  Further, the closed head 16b may be provided directly above the center of the parking space 2, as shown in FIG. In this case, the closed head 16b is provided on the lower surface of the pallet 2b. Thereby, the spraying range such as the spraying range AR4 can be obtained for the parking space 2, and the vehicle MC parked in the parking space 2 can be reliably covered with the rectangular spraying range AR4. Combining this arrangement with the above-described embodiment and making this arrangement only at the uppermost stage is efficient as equipment (including during restoration after a fire).

It is a top view which shows the fire extinguishing equipment of the parking lot of this invention. It is an AA line expanded sectional view of FIG. It is a BB line reduced sectional view of Drawing 1. It is a top view which shows the spreading | spreading condition of the fire extinguisher by the spraying head in the fire extinguishing equipment of this invention. It is a front view of the closed type spray head in the fire extinguishing equipment of this invention. It is a top view of the deflector of the closed type spraying head in the fire extinguishing equipment of this invention. It is a longitudinal cross-sectional view of the closed type spreading head in the fire extinguishing equipment of this invention. It is a longitudinal cross-sectional view which shows the state at the time of spraying of the closed type spray head in the fire extinguishing equipment of this invention. It is a top view which shows the spreading | spreading condition of the fire extinguisher by the spraying head in the fire extinguishing equipment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Parking lot 2 Parking space 2a Between pallets 2b 3 Parking space row | line | column 3a, 3b Both ends of row | line | column of parking space 16 Spreading head

Claims (2)

Foaming means installed in a parking lot in which a plurality of parking spaces are parked side by side and spraying a low foaming foam aqueous solution mixed with a water film-forming foam fire-extinguishing agent on vehicles parked in the parking space Fire extinguishing equipment having a closed spray head without
The closed spray head collides the foam aqueous solution discharged from the discharge port with a flat plate-shaped deflector, and the foam aqueous solution is in a droplet state while being guided by a guide portion formed on the outer peripheral portion of the deflector. A fire extinguishing facility for a parking lot, which is scattered and sprayed on the parking space to form a water film with the aqueous foam solution. The discharge port of the closed-type spraying head is cylindrical, and the deflector of the closed-type spraying head is a rectangular flat plate, and a plurality of guide portions and slits are formed on the outer periphery of the collision portion at the center. 2. The fire extinguishing equipment for a parking lot according to claim 1, which is arranged radially from the center of the deflector to form a rectangular spreading range larger than the size of each of the parking spaces.

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