JPH062690Y2 - Fire extinguisher - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) This invention is used, for example, for initial fire extinguishing in the event of a fire, by installing it at appropriate intervals on the premises of various buildings in chemical complexes. The present invention relates to a fire extinguishing water discharge device.

(Prior Art) As a water discharge device for extinguishing a fire of this type, there are: A model in which a flexible hose for water discharge with a water discharge nozzle on the water discharge end side is stored in a folded state in a pit formed below the ground surface, and when a fire occurs, the hose is artificially pulled out from the pit and used for fire extinguishing. B. A fixed length water discharge pipe equipped with a water discharge nozzle on the water discharge end side,
A device fixed in advance while being exposed on the ground surface in a state where the water discharge direction is set to be optimal for a building, C. A pipe having a piston fixed to the lower end is slidably arranged in a fixed vertical pipe and a water discharge pipe having a water discharge nozzle at the tip is integrated with the pipe in a state of being inserted into the piston of the pipe, A water discharge facility in which a water discharge device having a water pipe connected to an intermediate portion of a fixed vertical pipe below the piston and a bypass pipe provided between the water pipe and the lower surface of the piston is housed in a box. By supplying water from the water pipe to the bypass pipe, the piston is moved upward, the water discharge pipe is moved upward together with the piston, and the lid of the box is automatically opened by the upper power, and the lower end opening of the water discharge pipe is There is a structure in which water is discharged through a water discharge pipe when reaching the middle portion of the fixed vertical pipe and communicating with the water supply pipe.

(Problems to be solved by the invention) Of the above-mentioned conventional water discharge devices, the former A type requires a time for a person to move to the pit position and a time for pulling out the hose from the pit when a fire occurs. , It takes a considerably long time to notice the fire and actually start the water discharge, and not only the initial fire extinguishing is likely to be delayed, but also a lot of labor is required to discharge the water because it is mainly done by human work. There was a flaw.

On the other hand, in the latter B, since the water discharge direction of the water discharge pipe is fixed in advance to the optimum direction, it is possible to immediately start water discharge simply by sending water when a fire occurs, and it is very effective for initial fire extinguishing. In addition, it has the advantage that no human work is required, but since the water discharge pipe is always exposed on the ground surface, it is likely to become an obstacle for cars and people to pass in normal times, and a fire may occur. In the event of an emergency such as an emergency, the water discharge pipe must be protected from collisions with cars, etc. so that the water discharge operation can be performed reliably.Therefore, the place where this water discharge device is installed should be a ban on traffic or a pedestrian zone. There was a drawback that the effective use of space was sacrificed.

On the other hand, according to the water discharge facility described in C above, the drawbacks of the water discharge device described in A and B above can be solved, but since a piston, a bypass pipe, etc. are required, the structure becomes complicated and expensive. Not only does it get stuck, but because the lower chamber of the piston and the bottom of the fixed vertical pipe are in a sealed state, after the water is discharged, water stays in the bottom of the fixed vertical pipe, in the lower chamber of the piston, and in the water discharge pipe. Not only is there a risk that the pipe will be condensed in winter and the pipe will be damaged, but in the event of a fire, there is a problem that the upward movement of the water discharge pipe will be hindered and it will not operate.

The present invention has been made in view of the above circumstances, and it can prevent water from being disturbed during normal times and can be reliably protected from damage due to a vehicle impact, etc., but can quickly discharge water in a predetermined direction in the event of a fire. Then, it is an object of the present invention to provide a fire extinguisher water-discharging device capable of exerting a great effect on initial fire extinguishing and freezing or the like.

(Means for Solving Problems) In order to achieve the above object, a fire extinguishing water discharge device according to the present invention stores a water discharge pipe having a water discharge nozzle on a water discharge end side in a pit below the ground surface. It is slidable and expandable along the axial direction of the fixed water pipe installed, and is fitted and held so as to project to the outside of the pit in the extended posture, and inside the water discharge nozzle of this movable water pipe. To
It is characterized in that a lower surface is equipped with a water discharge dispersion tool formed on a pressure receiving surface for receiving a water supply pressure to the fixed water supply pipe.

(Operation) According to the fire extinguishing water discharge device of the present invention having the above-described characteristic configuration, the movable water discharge pipe contracts with respect to the fixed water supply pipe in a normal state, and the water discharge nozzle at the movable water discharge pipe discharge end is a pit. Since it is retired and stored inside, it is possible to prevent damage due to collision with other objects such as cars or unexpected fluctuations in the water discharge direction. When a fire occurs, the movable water discharge pipe automatically slides and extends with respect to the fixed water pipe under the water supply pressure of the lower surface of the water discharge disperser installed in the water discharge nozzle along with the water supply to the fixed water pipe. The water jet nozzle is located outside the pit, and water is discharged in a preset direction at the extension limit thereof.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show the installation situation of the fire extinguishing water discharge device according to the present invention. In the figure, (1) is a concrete frame of rectangular annular shape in plan view, which is mostly buried under the ground surface (GL). At the upper end of this body (1), a hinged lid (2A) (2A) (2A) (2A) (2A) (2A) that can be swung open and closed around hinges (2a) (2a) attached to a pair of opposite sides ) Is attached, and one lid (2A) has a central part in the width direction that is automatically swung around the hinge (2b) by the extension movement force of the water discharge pipe (3) described later. (2B) is formed.

(4) is a stand pipe fixedly installed in a substantially straight posture in a pit (5) composed of the above-mentioned skeleton (1) and a double door lid (2A) (2A), and a lower end of the stand pipe An emergency automatic valve (6) that is automatically opened in response to the detection operation of an external fire detector is joined, and at the upper end of it a swing angle variable mechanism (7) that uses a worm gear and a worm wheel. In addition, a joint pipe (9) is communicatively connected through a depression / elevation angle varying mechanism (8).

(10) is a fixed water pipe which is fixedly connected to the joint pipe (9) through the fastening ring (11) and the claw (12), and the tip portion (10a) of the fixed water pipe (10) is reduced in diameter. A reinforcing ring (13) is fixed to the reduced diameter tip portion (10a). (3) is a water discharge pipe, a water discharge nozzle (16) is joined to the water discharge end side of the water discharge pipe (3) through a tip metal fitting (14) and a connector (15), and the water discharge pipe ( 3) has an outer diameter substantially equal to the inner diameter of the diameter-reduced tip portion (10a) of the fixed water pipe (10), and a guide (18) with an O-ring (17) fixed to the outer periphery on the water receiving end side is provided. Through the above fixed water pipe
With respect to (10), it is fitted in and held so as to be slidable and expandable along its axial direction. As shown in FIG. 3, the movable water discharge pipe (3) has a contracted posture in which the end green of the tip metal fitting (14) is in contact with the reinforcing ring (13), and as shown in FIG. ) Can be switched to the extended position in which the inner diameter of the diameter-reducing tip portion (10a) enters and abuts, and in the extended position shown in FIG.
The (16) is configured to open the automatic lid (2B) and project to the outside of the pit (5). (19) is a water discharge dispersion tool inserted and fixed in the water discharge nozzle (16) at the tip of the movable water discharge pipe (3), the lower surface of which receives a water supply pressure to the fixed water supply pipe (10) (20) Is formed in.

Next, the operation of the fire extinguishing water discharge device configured as described above will be described.

In normal times, the movable water discharge pipe (3) is in the contracted posture as shown by the solid line in FIG. 1 and FIG. 3, and the pit (5)
It is stored inside.

And in response to the sensing operation of the fire detector, the emergency automatic valve
When (6) is automatically opened, the stand pipe (4) and joint pipe
Water transfer to the fixed water pipe (10) is started via (9). The water pressure acts on the pressure receiving surface (20), so that the movable water discharge pipe (3) slides in the extension direction along the axial direction with respect to the fixed water pipe (10), and this extension movement force automatically Lid (2
B) is automatically rocked and released, and as shown in the phantom line in FIG. 1 and FIG. 4, the water discharge nozzle (16) is positioned above the pit (5) and protrudes in a predetermined direction. Water is discharged. The water discharge direction at this time is preset to be optimum for the building through the turning angle changing mechanism (7) and the elevation angle changing mechanism (8) provided in the pit (5). Is there.

(Effect of the Invention) As can be understood from the above description, according to the present invention, the movable water discharge pipe is normally placed in the storage posture such that the water discharge nozzle at the discharge end is retracted and stored in the pit. As a result, it is possible to prevent passage obstacles and protect the water discharge pipe from accidental damage to ensure the water discharge operation in the event of a fire. It is possible to extend the water discharge nozzle at the discharge end to promptly switch the water discharge posture to the outside of the pit, and surely perform water discharge in a predetermined direction. In this case, the movable water discharge pipe is slidably provided on the fixed water discharge pipe, and the water discharge pressure is directly applied to the lower surface of the water discharge disperser installed in the upper water discharge nozzle of the movable water discharge pipe to extend the movable water discharge pipe. Therefore, the movable water discharge pipe can be reliably and quickly extended with a simple structure without using a piston mechanism or a bypass pipe line, and when the water discharge is stopped, the water in the fixed water pipe or the movable water discharge pipe is stopped. Can be immediately discharged to the lower end side of the fixed water pipes and can be drained completely, so that it is possible to prevent freezing due to accumulated water in these fixed water pipes and movable water discharge pipes. Thus, the movable water discharge pipe can be reliably operated during water discharge.

[Brief description of drawings]

FIG. 1 is a side view showing a state of installation of a fire extinguishing water discharge device according to the present invention, FIG. 2 is a partially cutaway plan view of FIG. 1, and FIGS. 3 and 4 are enlarged half-vertical cross-sections of essential parts. There is a figure. (3)… Movable water discharge pipe, (5)… Pit, (10)… Fixed water pipe, (1
6)… Water discharge nozzle, (20)… Pressure receiving surface.

Claims (1)

[Scope of utility model registration request] 1. A water discharge pipe having a water discharge nozzle on the water discharge end side,
For fixed water pipes stored and installed in the pit below the ground surface,
It is slidable and expandable along its axial direction, and is fitted and held so as to project to the outside of the pit in the extended posture, and the lower surface is fixed to the fixed water pipe in the water discharge nozzle of the movable water discharge pipe. A water extinguisher for extinguishing a fire, characterized in that a water discharge disperser formed on a pressure receiving surface for receiving a water supply pressure to the fire extinguisher is mounted.