JPH10272196A - Fire extinguishing equipment and spray head thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to be set easily and to spray water widely and uniformly. SOLUTION: The water spray head of the fire extinguishing equipment is furnished with a fire extinguishing pipeline 3 provided under a floor 1, an upward jet cylinder 10 that is erected in the fire extinguishing 3 and arranged in the lower side of the floor 1. And a cylinder 12 that is provided concentrically in the jet cylinder 10 and houses a piston 13, rotary plates 19, 20 that are provided in the jet cylinder 10 and support the cylinder 12, and a deflector 30 that is so provided as to cover the outlet 10a of the jet cylinder 10 and interlocks with the piston 13, and rotary deflector 30 whose top face 30a is flush with a floor surface 1F.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing system and a watering head thereof.

[0002]

2. Description of the Related Art Conventionally, in atriums and halls, a type of sprinkler head, a side wall head, or a water discharge gun, which sprays water from above, has been used.

[0003]

The conventional watering head has the following problems. (1) In order to install a sprinkler head in an atrium or a hall, it is necessary to construct a fire extinguishing pipe behind the ceiling or on the top. At this time, the ceiling member has to support the weight of the filled pipe and the fixing bracket and the reaction force of the water pressure generated at the time of water discharge. For this reason, a strong building member must be used or reinforcement must be used, so that equipment costs are high. In addition, there are problems in equipment and design, such as unfavorable appearance in places where people enter and exit. Further, when an earthquake or the like occurs, the fire extinguishing pipe cannot follow the swing of the building, and the pipe is damaged, and there is a problem that the pipe and the head are damaged due to the difference between the fire extinguishing pipe and the swing of the building.

(2) In some cases, the fire extinguishing water does not reach the center of a predetermined watering section, or water cannot be sprayed uniformly over the entire area of the watering section from the side wall head or the water discharge cannon. (3) The mounting surface is limited by the structure of the building or the like, and is provided so as to protrude from the mounting surface.

[0005] In view of the above circumstances, an object of the present invention is to provide a watering head that can be easily installed. The other purpose is
It is hard to be affected by an earthquake and the like, so that water can be sprayed widely and uniformly.

[0006]

According to the present invention, there is provided an upwardly directed injection cylinder connected to a fire extinguishing pipe; a swirling flow forming means provided in the injection cylinder; and an exhaust pipe provided to cover an outlet of the injection cylinder. And a deflector having vertical movement restricting means.

The present invention provides an upward injection cylinder connected to a fire extinguishing pipe; a cylinder concentrically provided in the injection cylinder and having a built-in piston; provided in the injection cylinder;
And a swivel plate supporting the cylinder; and a deflector provided so as to cover an outlet of the injection cylinder and interlocked with the piston.

According to the present invention, there is provided a fire extinguishing pipe disposed under a floor; an upwardly directed injection cylinder erected on the fire extinguishing pipe and disposed below a floor; and concentrically disposed within the injection cylinder. Provided in
And a cylinder containing a piston; a revolving plate provided in the injection cylinder and supporting the cylinder; and a deflector provided to cover an outlet of the injection cylinder and interlocked with the piston. And a revolving deflector, the upper surface of which is flush with the floor surface.

According to the present invention, there is provided a fire extinguishing pipe disposed under a floor; an upwardly directed injection cylinder provided upright on the fire extinguishing pipe and disposed below a floor surface; and concentric with the injection cylinder. A cylinder having a piston and a built-in piston; a revolving plate provided in the injection cylinder and supporting the cylinder; provided so as to cover an outlet of the injection cylinder, and interlocking with the piston A swivel deflector having an upper surface flush with a floor surface; a test water supply port and a water discharge port provided in the cylinder; and a test valve connecting the test water supply port and a fire extinguishing pipe. And a test pipe.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A fire-extinguishing pipe is provided upright on a fire extinguishing pipe. The fire extinguishing pipe is disposed, for example, under the floor. The outlet of the jetting cylinder is located near the back surface of the floor, and the position is appropriately selected as needed.

A swirling flow forming means is provided in the jetting cylinder. As the swirl flow forming means, for example, a swirl plate having a swirl flow path is used, but it is not particularly limited to this. The sprinkler pipe is provided with a plurality of watering heads at intervals.

The jetting cylinder is provided with a turning deflector so as to cover its outlet. This turning deflector has
A vertical movement restricting means is provided.As the vertical movement restricting means, for example, a rod is connected to a deflector, a piston is provided at a lower end of the rod, and the piston is fitted to a cylinder concentric with the ejection cylinder. , Restrict the sliding range of the piston.

The vertical movement restricting means is not limited to this. If the upper surface of the revolving deflector is located on the same plane as the floor surface, it is preferable in terms of use and aesthetics, but it is not always necessary.

The cylinder is provided with a test water supply port and a drain port, and the test water supply port is connected to a fire extinguishing pipe via a test pipe with a test valve.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. A sprinkler pipe 3 is arranged below the floor 1 of the hall. A constant interval L, for example, L =
A plurality of watering heads 5 are provided at a distance of 10 mm.

The watering head 5 includes an ejection tube 10 and a rotatable swivel deflector 30. Spout cylinder 1
0 is erected on the sprinkler pipe 3 and its outlet 10a
Is located near the back surface 1a of the floor 1.

A concentric silling 12 is provided in the ejection tube 10. A piston 13 is fitted to the cylinder 12, and a test water supply port 14 is formed at a lower portion of a side wall thereof, and a test drain port 15 is formed at an upper portion thereof.

The test water supply port 14 is connected to the sprinkler pipe 3 via a test pipe 17 having a test valve 16. A drain hole 18 is provided on the bottom of the cylinder 12.
To prevent fire extinguishing water from remaining in the cylinder 12 when the piston 13 descends. The drain hole 18 has an orifice structure.

The two ends of the cylinder 12 are revolving plates 19, 20
Is fixed to the ejection tube 10. Revolving plates 19, 20
Are formed in the same shape. For example, as shown in FIG. 2, the swivel plate 20 includes a closing part 21 and a swirling flow path part 22, and the two parts 21, 22 are arranged along the circumferential direction. They are arranged alternately.

The piston 13 is connected to a turning deflector 30 via a rod 25. The revolving deflector 30 includes a conical dispersion part 31 and a stepped lid part 33.

The dispersion portion 31 includes the arc-shaped swirling blade 3
4 are provided. The floor 1 is formed with a swirl flow jet hole 35 formed in a step shape. When the swirl deflector 30 is inserted, the swirl deflector 30 is
Is formed such that the upper surface 30a is located on the same plane as the floor surface 1F. At this time, the dispersion unit 31 is
Is housed in the upper part 10a.

Next, the operation of this embodiment will be described. Valve 4 by an electric signal from a fire detector (not shown) or manually
When 0 is opened, the simultaneous opening valve 41 is opened, a pump (not shown) is started, and fire extinguishing water flows into the secondary side of the simultaneous opening valve 41.

Then, the fire extinguishing water W is filled in the sprinkler pipe 3 and the fire extinguishing water W is
0, flows into the cylinder 12 from the drain hole 18 of the cylinder, pushes up the piston 13 and
The swirl flow WS becomes the swirl flow WS while passing through the swirl flow path portions 9 and 20, and collides with the dispersion portion 31 of the swirl deflector 30 through the swirl flow ejection hole 35 to apply a lifting force to the deflector 30. Therefore, the deflector 30 is pushed up and protrudes from the floor 1F.

When the piston 13 rises and comes into contact with the upper end of the cylinder 12, the movement stops. Therefore, the deflector 30 stops at a position separated by a certain distance from the floor surface 1F, and maintains the valve open state. Then, the swirling flow WS collides with the swirling blades 34 of the dispersion unit 31 and is dispersed outward while rotating the deflector 30 in the direction of arrow A30. Therefore, the fire extinguishing water is sprayed widely and uniformly.

After the fire extinguishing operation is completed, the pump (not shown) is stopped, the supply of water to the sprinkler pipe 3 is stopped, and the drain valve 45 is opened to drain the residual water. In addition, residual water in the upper part 10 a of the ejection tube 10 is also discharged from the revolving plates 19 and 20. The residual water in the cylinder 12 is drained from the drain hole 18, and the piston 13 descends by its own weight of the swirl deflector 30, so that the deflector 30 is inserted into the swirl jet hole 35, and the upper surface 30 a of the deflector 30 is a floor surface. It is located on the same plane as 1F.

In the sliding test of the swivel deflector 30, when the test valve 16 is opened by a test signal or manually, the fire extinguishing water W flows through the test pipe 17 through the cylinder 12.
, The piston 13 is pushed up, and the deflector 30 is raised.

At this time, a small amount of fire extinguishing water flows out of the drain hole 18, but since the discharge hole 18 has an orifice structure, the amount of the outflow is small compared to the supplied flow rate.
Therefore, the pressing force applied to the piston 13 is not significantly reduced, so that the deflector 30 can be smoothly raised to open the valve. If fire extinguishing water remains in the upper part of the piston 13, the water is discharged from the outlet 15 to the outside of the machine.

When the test valve 16 is closed, the supply of fire-extinguishing water into the cylinder 12 is stopped, and the residual water in the cylinder 12 is pressed by the weight of the revolving deflector 30 on the piston 13 and is discharged from the drain hole 18 of the cylinder 12. Is discharged. Therefore, the deflector 30 descends and is attached to the swirling flow ejection hole 35, and its upper surface 30a is located on the same plane as the floor surface 1F. In the above embodiment, the test valve 16 and the test tube 17 may be provided in common for a plurality of watering heads 5.

[0029]

The present invention has the following remarkable effects. (1) Since an upward water sprinkling head is provided in a fire extinguishing pipe provided under the floor, installation is easier than in the conventional example, and seismic resistance can be improved. (2) The fire extinguishing water becomes a swirling flow by the swirling flow forming means,
Since this swirling flow collides with the deflector and is dispersed, it is possible to spray water uniformly over a wide area. (3) Since a test water supply port and a water discharge port are provided in a cylinder having a piston interlocking with a deflector, when fire-extinguishing water is supplied to the test water supply port, the piston rises, the deflector rises, and the inside of the cylinder rises. When the fire extinguishing water is discharged, the deflector also descends. This makes it possible to easily test whether the deflector can move up and down. This test method can test many watering heads at the same time by sending a test signal, etc.
It is convenient.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing the II-II embodiment of FIG.

FIG. 3 is a sectional view showing a state in which a plurality of watering heads are provided.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor 3 Sprinkler piping 10 Jetting cylinder 30 Swing deflector

Claims (6)

[Claims] An upward injection cylinder connected to a fire extinguishing pipe; a swirling flow forming means provided in the injection cylinder; and a vertical movement restricting means provided to cover an outlet of the injection cylinder. A watering head comprising: 2. An upward injection cylinder connected to a fire extinguishing pipe; a cylinder concentrically provided in the injection cylinder and having a built-in piston; and a cylinder provided in the injection cylinder and provided with a cylinder. A sprinkling head, comprising: a revolving plate for supporting; and a deflector provided so as to cover an outlet of the injection cylinder and interlocked with the piston. 3. The watering head according to claim 2, wherein the cylinder is provided with a test water supply port and a drain port. 4. The watering head according to claim 1, wherein the deflector includes a swirl vane. 5. A fire extinguishing pipe provided under the floor; an upwardly directed injection cylinder erected on the fire extinguishing pipe and disposed below the floor; and provided concentrically within the injection cylinder. And a cylinder having a built-in piston; a revolving plate provided in the injection cylinder and supporting the cylinder; and a deflector provided to cover an outlet of the injection cylinder and interlocked with the piston. A revolving deflector, the upper surface of which is flush with the floor surface. 6. A fire-extinguishing pipe provided below the floor; an upwardly directed injection cylinder erected on the fire-extinguishing pipe and disposed below the floor; and provided concentrically within the injection cylinder. And a cylinder having a built-in piston; a revolving plate provided in the injection cylinder and supporting the cylinder; and a deflector provided to cover an outlet of the injection cylinder and interlocked with the piston. A swivel deflector having an upper surface flush with the floor surface; a test water supply port and a drain port provided in the cylinder; and a test pipe connecting the test water supply port to a fire extinguishing pipe. Fire extinguishing equipment characterized by having.