JP2005218474A - Auxiliary foam fire extinguishing device for water hydrant equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an auxiliary foam fire extinguishing device for water hydrant equipment which reduces the overall cost by using not an expensive pressurized container but a mere storage container. <P>SOLUTION: The foam fire extinguishing device comprises a line proportioner mixer 5 mounted on the secondary side of a fire hydrant (valve) 1 in a box 2 for housing a water discharging device, an orifice for the flow of a foam fire extinguishing undiluted solution provided in the line proportioner mixer 5, a pickup tube 8 led out of the orifice, and a storage container 10 for the foam fire extinguishing undiluted solution which is connected to the line proportioner mixer 5 by the pickup tube 8 and is post-fitted and is housed in the box 2. The line proportioner mixer 5 generates a negative pressure by the orifice at the use of the hydrant, and proportionally mixes the foam fire extinguishing undiluted solution into water at concentration in a range of 0.5-3.0% by the pickup tube 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a foam fire extinguisher accessory for a water fire hydrant facility that enables a fire extinguisher with foam in addition to the original fire extinguishing with water by attaching it to a water discharge device storage box (fire hydrant box) of a water hydrant facility. Is.

  A conventional foam fire extinguishing device for water hydrant equipment of this type can be attached to the secondary side of a fire hydrant (valve) in a water discharge device storage box in a water hydrant equipment as disclosed in, for example, Japanese Patent Application Laid-Open No. 2003-52849. A pressure proportioner-type mixer, and a foam extinguishing agent stock solution storage pressure vessel that can be connected to the mixer and can be stored in the water discharge device storage box later. The mixer is used when the fire hydrant is used. The foam extinguishing agent stock solution in the extinguishing agent stock solution pressure vessel is provided with a function of mixing in proportion to a constant value mixing concentration within a range of 0.3 to 2.0% with respect to water.

As a result, in buildings where water hydrants are generally installed, such as factories, not only fire extinguishing mainly for general fires, but also when spraying radiation with an extremely low foaming foam solution, oil, solvents, etc. Fire extinguishing activities can be carried out effectively against fires of flammable liquids.
JP 2003-52849 A

  The problem to be solved is that the conventional one requires a pressure vessel to store the foam extinguishing chemical stock solution as described above. Therefore, this kind of simple equipment (additional unit) has a relatively low cost overall. The specific gravity of the pressure vessel in the cost increases and the overall cost increases.

  The invention according to claim 1 is a line proportioner mixer that can be attached to the secondary side of a fire hydrant (valve) in a water discharge apparatus storage box in a water hydrant facility, and a foam extinguisher stock solution provided in the line proportioner mixer. An inflow orifice, a pickup tube derived from the orifice, and a foam extinguisher stock solution storage container that can be connected to the line proportioner mixer by the pickup tube and can be stored in the water discharge device storage box later. The line proportioner mixer generates negative pressure by the orifice when using a fire hydrant, and the foam fire extinguisher stock solution is proportionally mixed with water at a concentration within a range of 0.5 to 3.0% with respect to water by the pickup tube. It is characterized by doing so.

  The invention of claim 2 is a press-fit proportioner mixer that can be attached to the secondary side of a fire hydrant (valve) in a water discharge device storage box in a water hydrant facility, and a foam extinguishing agent stock solution provided in the press-fit proportioner mixer An inflow orifice, a tube derived from the orifice, and a foam-extinguishing agent stock solution that can be connected to the press-fit proportioner mixer and can be stored in the water discharge device storage box by the tube are stored under pressure. The pressure-injection proportioner mixer controls the discharge pressure from the pressure-accumulation fire extinguishing device with the orifice when the fire hydrant is used, and the foam extinguishing agent stock solution is 0.5-3. Proportional mixing is performed at a concentration in the range of 0%.

  The invention according to claim 1 is advantageous in that it is possible to use not only an expensive pressure vessel but a mere storage vessel by adopting a configuration of a line proportioner mixer, an orifice and a pickup tube, thereby reducing the overall cost. There is.

  The invention of claim 2 is constituted by a press-fit proportioner mixer, an orifice, and a pressure-accumulating fire extinguisher, so that a pressure-accumulating fire extinguisher (a commercially available pressure accumulating fire extinguisher device can be used as it is instead of an expensive pressure vessel) ) Can be used only by changing the contents, and the overall cost can be reduced.

  A line proportioner mixer that can be attached to the secondary side of a fire hydrant (valve) in a water hydrant storage box in a water hydrant facility, a foam fire-extinguisher inflow orifice provided in the line proportioner mixer, and this orifice This was realized by combining a pickup tube derived from the above and a foam extinguisher stock solution storage container that can be connected to the line proportioner mixer by this pickup tube and can be stored in the water discharge device storage box later.

An embodiment of the invention of claim 1 will be described with reference to FIGS.
FIG. 1 is a schematic view showing the inside of a water discharge device storage box of a water hydrant facility, and FIG. 2 is a view showing the inside of the line proportioner mixer of FIG.

  In the figure, 1 is a fire hydrant (valve) provided in a water discharge device storage box (fire hydrant box) 2, 3 is a hose connected to the secondary side of the fire hydrant (valve) 1 and stored in the water discharge device storage box 2 4 is a nozzle at the tip of the hose 3, 5 is a line proportioner mixer that is interposed between the hose 3 and detachably attached to the secondary side of the fire hydrant (valve) 1 by a coupling 6, and 7 is a line Orifice for inflow of foam extinguishing agent stock solution provided in the proportioner mixer 5, 8 is a pick-up tube led out from the orifice 7 through the closing valve 9, 10 is connected to the pick-up tube 8 and stored in the water discharge device storage box 2 In the foam extinguishing agent stock solution storage container, the slit window 11 is provided so that the amount of the foam extinguishing agent stock inside can be seen.

  As shown in each figure, when the line proportioner mixer 5 is attached to the secondary side of the fire hydrant (valve) 1 and the fire hydrant (valve) 1 is opened, water passes through the line proportioner mixer 5 and the hose 3. In this case, a negative pressure is generated near the orifice 7 and the foam extinguishing agent stock solution in the foam extinguishing agent stock container 10 flows into the line proportioner mixer 5 by the pickup tube 8. The nozzle 4 emits bubbles by being proportionally mixed with water at a concentration within the range of 0.5 to 3.0%. At that time, since no pressure is applied to the foam extinguishing agent stock solution storage container 10, it is not necessary to use the foam extinguishing agent stock solution storage container 10 as a pressure vessel.

  And if the shut-off valve 9 is closed, there will be no inflow of the foam-extinguishing agent stock solution from the orifice 7, so that the nozzle 4 will be the original water discharge.

  If the line proportioner mixer 5 can be attached to the secondary side of the fire hydrant (valve) 1 (between the hose 3) in this way, the existing water hydrant equipment is, of course, the existing water hydrant equipment. Can be easily retrofitted. Therefore, it becomes effective when it is necessary to extinguish foam later in a factory or the like.

An embodiment of the invention of claim 2 will be described with reference to FIGS.
FIG. 3 is a schematic view showing the inside of the water discharge device storage box of the water hydrant equipment, and FIG. 4 is a view showing the inside of the press-fit proportioner mixer of FIG. 3, which is the same as or equivalent to that of the first embodiment described above. Are denoted by the same reference numerals and description thereof is omitted.

  In the figure, 12 is a press-fit proportioner mixer interposed between the hose 3 and detachably attached to the secondary side of the fire hydrant (valve) 1 by a coupling 6, and 13 is a closure provided at the outlet of the orifice 7. A valve 14 is a tube detachably connected to the shut-off valve 13 by a coupling 15, and 16 is a pressure-accumulating fire extinguisher that is connected to the tube 14 and stored in the water discharge device storage box 2. The device can be used simply by replacing the contents with an aqueous film (N2 pressure).

  When the hydrant (valve) 1 is opened with the press-fit proportioner mixer 12 attached to the secondary side of the hydrant (valve) 1 as shown in each figure, water passes through the press-fit proportioner mixer 12 and the hose 3. In this case, the activation push button 17 of the pressure-accumulating fire extinguishing device 16 is pressed to press the foam extinguishing agent stock solution in the pressure-accumulating fire extinguishing device 16 into the press-fit proportioner mixer 12, and the orifice 7 From the nozzle 4, the foam extinguisher stock solution, which is controlled in a fixed amount so as to have a concentration in the range of 0.5 to 3.0% with respect to water, is proportionally mixed in the press-fit proportioner mixer 12. It becomes bubble radiation. At that time, it is necessary to confirm the pressure accumulation state in the pressure accumulating fire extinguishing apparatus 16 with the pressure gauge 18 and the remaining amount of the stock solution can also be confirmed.

  In this equipment, by using the press-fitting proportioner mixer 12 with the orifice 7, a slight negative pressure is generated at the portion of the orifice 7, so that water does not flow backward from the inside of the orifice 7, and the accumulator fire extinguisher It is possible to cause the foam extinguisher stock solution to flow into the press-fit proportioner mixer 12 via the tube 14 by the pressure in the appliance 16.

  And if the shut-off valve 13 is closed, there is no inflow of the foam-extinguishing agent stock solution from the orifice 7, so that the original water discharge from the nozzle 4. In this state, the accumulator-type fire extinguishing device 16 can be attached and detached by the coupling 15 to be replaced. The coupling 15 may be attached in place of the nozzle of the pressure accumulating fire extinguishing device 16.

  In this way, if the press-fit proportioner mixer 12 can be attached to the secondary side of the fire hydrant (valve) 1 (between the hose 3), the existing water hydrant equipment as well as the existing water hydrant equipment Can be easily retrofitted. Therefore, it becomes effective when it is necessary to extinguish foam later in a factory or the like.

  The present invention can be widely used for water hydrant equipment.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows Example 1 of this invention and shows the inside of the water discharge appliance storage box of a water hydrant installation. It is a figure which shows the inside of the line proportioner mixer of FIG. It is Example 2 of this invention, and is the schematic which shows the inside of the water discharge appliance storage box of a water hydrant installation. It is a figure which shows the inside of the press-fit proportioner mixer of FIG.

Explanation of symbols

1: Fire hydrant (valve)
2: Water discharge equipment storage box 3: Hose 4: Nozzle 5: Line proportioner mixer 6: Coupling 7: Foam extinguisher stock solution inflow orifice 8: Pick-up tube 9: Shut-off valve 10: Foam extinguisher stock solution storage container 11: Slit window 12: Press-fit proportioner mixer 13: Shut-off valve 14: Tube 15: Coupling 16: Accumulated fire extinguishing device 17: Start push button 18: Pressure gauge

Claims (2)

A line proportioner mixer that can be attached to the secondary side of the fire hydrant (valve) in the water hydrant storage box in the water hydrant equipment, a foam fire-extinguisher in-flow orifice installed in the line proportioner mixer, and the orifice A pickup tube derived from the above, and a foam extinguishing agent stock solution storage container that can be connected to the line proportioner mixer by this pickup tube and can be stored in the water discharge device storage box later.
The line proportioner mixer generates a negative pressure by the orifice when using a fire hydrant, and the pick-up tube causes the foam extinguisher stock solution to be proportionally mixed with water at a concentration within a range of 0.5 to 3.0%. Foam fire extinguishing equipment for water hydrant equipment, characterized by A press-fit proportioner mixer that can be attached to the secondary side of a fire hydrant (valve) in the water discharge equipment storage box in the water hydrant equipment, an orifice for injecting foam solution into the press-fit proportioner mixer, and this orifice And a pressure-accumulating fire extinguishing device in which a foam extinguishing agent stock solution that can be connected to the press-fit proportioner mixer and can be stored in the water discharge device storage box is stored in a pressurized state by the tube. Become
The press-fit proportioner mixer controls the discharge pressure from the pressure-accumulating fire extinguisher with the orifice when using a fire hydrant, and the foam extinguisher stock solution is proportional to the water concentration in the range of 0.5 to 3.0%. A bubble fire extinguisher for water hydrant equipment, characterized by mixing.

Images