JP3084147B2 - Fire extinguisher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguisher for extinguishing a fire by discharging a fire extinguishing agent such as water, foam, powder or the like using a monitor nozzle.
The present invention relates to a fire extinguisher for extinguishing a fire in a large indoor or outdoor space such as an exhibition hall, a factory or a hangar.

[0002]

2. Description of the Related Art A monitor nozzle (also referred to as a fire extinguisher, a fire extinguisher, a water cannon, etc.) is used as a fire extinguisher in a large space, and a fire extinguishing agent such as water, foam, or powder is discharged from the monitor nozzle. Fire extinguishing systems that extinguish and extinguish are used.

In such a conventional fire extinguishing device, the monitor nozzle radiates the fire extinguishing agent in a rod-like state, so that the range that can be protected by one monitor nozzle is small, and the fire extinguishing agent is aimed at a fire point, that is, a fire extinguishing point. It was necessary to accurately determine and radiate, and it was difficult to cope with the spread of fire and the suppression of fire spread.

[0004] Therefore, as a fire extinguisher for a fire that occurs in a large space, water,
A plurality of monitor nozzles for discharging foam or powdered fire extinguishing agent are provided, and when a fire occurs in the fire extinguishing area, the fire extinguishing agent is discharged while reciprocating the monitor nozzles in charge of the fire extinguishing area to the left and right. A fire extinguisher that is sprayed has been proposed.

In such a fire extinguisher, a plurality of monitor nozzles sprays a fire extinguisher over the entire fire extinguishing area while reciprocatingly turning around the fire extinguishing area where a fire has occurred. Compared to the method that discharges the fire extinguisher after aiming at the fire point, it is not necessary to set the discharge aim at the fire point, so it is possible to immediately start fire extinguishing activity when a fire occurrence is detected, which is effective for initial fire extinguishing At the same time, the fire extinguishing agent is sprayed over a wide area including the fire spot, so that the spread of fire can be effectively suppressed.

The present invention relates to such a fire extinguishing device,
Prevent non-uniform spraying of the fire extinguishing agent, such as spraying a large amount of fire extinguishing agent in the fire extinguishing area at a specific location in the fire extinguishing area, and distribute the fire extinguishing agent uniformly and efficiently over the entire fire extinguishing area. It is intended to be sprayed.

[0007]

According to the present invention, there is provided a fire extinguisher in which a plurality of monitor nozzles are installed in a fire extinguishing area of a large space to spray a fire extinguishing agent. A swivel device is provided in correspondence with each of the plurality of monitor nozzles for reciprocating swirl or continuous swivel of the monitor nozzles, and the swirl speed of each monitor nozzle swirled by the swivel device is set to at least an adjacent monitor nozzle. The present invention provides a fire extinguisher characterized in that the nozzles are different from each other or between the monitor nozzles arranged to face each other, and are different between the monitor nozzles.

[0008]

When the fire extinguishing agent is discharged, the plurality of monitor nozzles
While spraying the fire extinguisher while being reciprocated or continuously swirled by each swivel device, the swirling speed of each monitor nozzle by the swivel device is different between adjacent monitor nozzles or between monitor nozzles arranged opposite to each other, As a result, the monitor nozzles are made different. If the swirling speeds of the adjacent monitor nozzles or the monitor nozzles arranged opposite to each other and thus the monitor nozzles are different, the collision position of the fire extinguishing agent radiated from each monitor nozzle is not constant in the fire extinguishing area. Vary. As a result, it is possible to prevent a large amount of the fire extinguishing agent from being sprayed to a specific location, and to uniformly and efficiently spray the fire extinguishing agent in the fire extinguishing region.

[0009]

An embodiment of the present invention will be described below.

According to the present invention, for example, a fire extinguishing area in a large space is divided into several fire extinguishing sections or districts, and a corresponding monitor nozzle discharges a fire extinguishing agent to the fire extinguishing section or district where a fire has occurred to extinguish fire. FIG. 1 shows only the first fire extinguishing section or area Z in the fire extinguishing area of the large space to which the present invention is applied, and four monitor nozzles (also referred to as a water discharge gun or a water discharge gun and a fire extinguisher). ) G1 to G4 are arranged. When a fire occurs in the first district Z,
As shown in FIG. 1, the monitor nozzles G <b> 1 to G <b> 4 use a hydraulic motor (or an electric motor) to swing right and left in a semicircle at different turning speeds, while extinguishing a fire extinguishing agent such as water, foam, or powder. Spray to extinguish the first area Z. In the case of indoors, the monitor nozzles G1 to G4 are provided above a wall surface or hung from a ceiling surface, and are provided on the roof of a building or on a tower in the case of outdoor. Provided.

The monitor nozzle (water discharge gun) used here
G1 to G4 are, for example, Japanese Utility Model Application Laid-Open No. 3-2201 filed on April 5, 1991 under the name of "water discharge gun fire extinguisher".
No. 1 and the same name as those described in Japanese Utility Model Application No. 3-28113 filed on Apr. 23, 1991, and other types of monitor nozzles having a swivel function. There may be. FIG. 2 schematically shows such a monitor nozzle that can be used in the present invention. In FIG. 2, the nozzle mounting portion 10 is for mounting a nozzle such as a variable spray nozzle (not shown), Shaft support 1
At 2, it is pivotally supported on the water discharge conduit 24 of the water discharge cannon rotation part 14 so as to be vertically rotatable. Elevating expansion / contraction means 18 is attached to the water cannon rotating section 14, and one end of the elevating expansion / contraction means 18 is connected to the nozzle mounting section 10 via a link 18 a by a shaft support 10 a, whereby The nozzle mounting portion 10 and, therefore, the nozzle (not shown) includes
8 can be turned up and down by expansion and contraction. The water cannon rotating section 14 is rotatably attached to the water cannon main body 20, and is rotated by the turning hydraulic motor 22.

A nozzle (not shown) attached to the nozzle attaching portion 10 by this configuration turns the water discharge gun rotating portion 14 with respect to the water discharge gun main body 20 by the turning hydraulic motor 22 so that the monitored area is turned laterally, that is, turned. In the direction, and the elevating expansion / contraction means 18 is moved to the elevating hydraulic motor 19.
(In FIG. 2, it cannot be seen because it is located on the rear side of the elevating and retracting means 18).

Further, in the water discharge gun, that is, the monitor nozzle shown in FIG. 2, a rotation encoder 30 for detecting the rotation angle of the water discharge gun rotation unit 14 by the rotation hydraulic motor 22, that is, the rotation angle of the nozzle in the rotation direction. The nozzle mounting part 10 is attached and is
The elevation encoder 72 for detecting the vertical rotation angle, that is, the elevation angle, is mounted.

In FIG. 3, a turning hydraulic motor 22 for turning the water discharge gun turning section 14 and a raising hydraulic motor 19 for expanding and contracting the raising and lowering means 18 in each of the monitor nozzles G1 to G4 are biased. A hydraulic system is shown. The turning hydraulic motor 22 and the raising hydraulic motor 19 in the monitor nozzles G1 to G4 switch the respective electromagnetic switching valves EV to control the respective flow control valves FV from the hydraulic pump OP.
And is driven by a hydraulic flow.

Each of the flow control valves FV for the turning hydraulic motor 22 and the elevating hydraulic motor 19 in each of the monitor nozzles G1 to G4 has a check valve CH on both the right and left pipes to each hydraulic motor. And one throttle valve TH, respectively, for a total of two. Accordingly, when the electromagnetic switching valve EV is moved to the right and the hydraulic flow flows through the hydraulic motor 22 or 19 in the forward direction from the left to the right in the drawing, the hydraulic flow from the hydraulic pump OP is first reduced to the left throttle. The hydraulic motor 22 or 19 is energized through the valve TH so that the monitor nozzle
In the case of, turn right from left to right in FIG.
In the case of the lifting hydraulic motor 19, the hydraulic motor 19 performs an upward operation from below to upward, and the hydraulic flow exiting the hydraulic motor returns to the oil tank OT through the right check valve CH.

When the electromagnetic switching valve EV is moved to the left and the hydraulic flow flows in the opposite direction, the hydraulic flow from the hydraulic pump OP is supplied to the hydraulic motor 22 or 19 through the right throttle valve TH. This causes the monitor nozzle to turn to the left in the case of the turning hydraulic motor 22, and to raise and lower the hydraulic motor 19.
In the case of, a downward operation is performed from top to bottom, and the hydraulic flow that has exited the hydraulic motor returns to the oil tank OT through the check valve CH on the left side. Thus, the turning operation of the monitor nozzle is performed in the left-right direction or the horizontal direction by the turning hydraulic motor 22, and the raising and lowering operation is performed by the raising hydraulic motor 19.

In the structure of the hydraulic system as described above, in the present invention, the turning speed is made different for each monitor nozzle.
The throttle opening of the throttle valve TH for the turning hydraulic motor 22 in each of 1 to G4 may be different for each monitor nozzle.

In the embodiment shown here, the monitor nozzles disposed opposite to each other as shown in FIG.
The case where the turning speeds are different between 1 and G3 and between G2 and G4 will be described. To do this, monitor nozzle G1
And G2, the throttle valve TH has the same throttle opening degree,
The throttle opening of the throttle valve TH is the same for the monitor nozzles G3 and G4, and the throttle valve T for the monitor nozzles G1 and G3.
Each of the turning hydraulic motors 22 has a different opening degree of H.
The throttle opening of the throttle valve TH is set. By setting the throttle opening in this way, the throttle opening of each throttle valve TH at the monitor nozzles G1 and G3 and the monitor nozzle G2
And G4, the throttle valve TH has a different throttle opening degree, which results in different turning speeds of the monitor nozzles disposed opposite to each other.

[0019] This state is shown in FIG. 1, the monitor nozzle G1 and G2 in FIG. 1 is turning at the same turning speed V _1,
Monitor nozzle G3 and G4 is shown to pivot in a different same velocity V _2. As a result, the monitor nozzles G1 and G3 and the monitor nozzles G2 and G4 that are opposed to each other are turned at different turning speeds.

FIG. 4 shows a control circuit CC having a microcomputer, for example, in a fire control panel PC for controlling the hydraulic system of FIG. 3 by inputting a fire area signal from a fire receiver or an emergency switch (not shown). Have been. The control circuit CC shown in FIG. 4 outputs a control signal to each of the electromagnetic switching valves EV of the hydraulic system shown in FIG. 3 while receiving signals from the turning encoder 30 and the raising encoder 72 described above to control the water discharge gun. When it is determined that the swing or the elevation has reached the limit based on signals from the encoders, the electromagnetic switching valve EV is switched to control the hydraulic pressure applied from the hydraulic pump OP via each flow control valve FV. Reverse the flow and turn or raise the water cannon in the opposite direction. In order to spray the fire extinguisher on the fan-shaped area as shown in FIG. 1, the turning control may be performed by switching control of the turning electromagnetic switching valve EV.

Hereinafter, the operation of the present embodiment will be described with reference to flowcharts shown in FIGS.
In the following description of the operation, in order to simplify the description, a case in which the water discharge gun, that is, the monitor nozzle rotates only in the turning direction will be described. In this case, the turning hydraulic motor 22 is used as a turning device for turning the monitor nozzle in the turning direction.

When a fire occurs and a signal of a fire area or a signal from an emergency switch (not shown) is input to the control panel PC from a fire receiver (not shown) (step 10).
2), the control circuit CC of the control panel PC, for example, having a microcomputer, determines the fire area or fire section, that is, the fire area (fire section) in which fire occurred (step 104). And 10
6).

Hereinafter, a case where it is determined that a fire has occurred in the first fire area Z (YES in step 104) will be described. However, the same operation is performed in other fire areas or fire sections. In step 106 of the flowchart, the operation of the fire extinguishing process in another fire area is omitted.

When it is determined that a fire has occurred in the first area, that is, in the first fire extinguishing section Z, the control circuit CC then controls the hydraulic system shown in FIG.
From the hydraulic pump OP to the electromagnetic switching valve E with respect to the turning hydraulic motor 22 in the monitor nozzles G1 to G4 installed in
A hydraulic flow is given via the V and the flow control valve FV, and the monitor nozzles G1 to G4 installed in the first area Z are turned in this way (step 108).
At the same time, the fire extinguishing agent is discharged from the monitor nozzles G1 to G4 that have started turning (step 110). Thus, the same monitor nozzle G1 and G2 of the throttle opening degree of the throttle valve TH sprayed with fire extinguishing agents while rotating with the same turning speed V _1,
Further, another monitor nozzle G of the throttle valve TH having the same throttle opening degree.
3 and G4 will begin to spray the fire extinguishing agent while swirling with in a different same turning speed V _2.

During turning, the control circuit CC controls each monitor nozzle G
The signals representing the turning angles from the turning encoders 30 of 1 to G4 are read (step 112), and the monitor nozzles G1 to G4 are read.
It monitors whether G4 has reached the limit of its turning range. In the control circuit CC, the right-turn limit and the left-turn limit are set and stored in advance so that each monitor nozzle sprays the arc region or the fan-shaped region illustrated in FIG. In such a setting storage method, a memory for storing these limits may be incorporated in the control circuit CC, or a setting means that can be manually set such as a dip switch may be used.

The control circuit CC provides, for each monitor nozzle,
The signal from the turning encoder 30 is always compared with a corresponding limit that is set and stored in advance, whereby the monitor nozzle that is turning right (left turning) is not allowed to reach the right turning (left turning) limit. Is reached (steps 114 and 116, 120 and 122, 126 and 1).
28 and 132 and 134), the electromagnetic switching valve EV of the hydraulic system is controlled so as to stop the right turn (left turn) and shift to the left turn (right turn).

Thus, each of the monitor nozzles G1 to G
No. 4 continues spraying while reciprocating in a semicircular area with respect to the fire extinguishing section Z until the fire extinguishing is completed (step 138). When it is determined that the fire extinguishing has been completed (YES in step 138), a turning stop command (step 140) and a discharge stopping command (step 142) are issued to the monitor nozzles G1 to G4, and the first standby state is set. .

In the above embodiment, the case where the turning device for turning each monitor nozzle is included in each monitor nozzle itself as the turning hydraulic motor 22 has been described. However, each monitor nozzle is individually provided. Each of the monitor nozzles may be attached to each of the turning devices, and each monitor nozzle may be turned by each turning device. In this case, the hydraulic system shown in FIG. 3 performs drive control of the individually provided swing devices instead of drive control of the swing hydraulic motor 22.

In the above embodiment, the case where each monitor nozzle reciprocates in a semicircular area has been described.
Depending on the installation situation, the circumference may be continuously rotated, or a certain monitor nozzle may be reciprocated in a semicircle, and another monitor nozzle may be continuously rotated in a circumference. May be controlled.

[0030]

As described above, according to the present invention, in a fire extinguisher in which a plurality of monitor nozzles are installed in a fire extinguishing area in a large space and a fire extinguishing agent is sprayed, the plurality of monitor nozzles are reciprocated or continuously swirled. In addition to the above, the swirling speed of the monitor nozzles arranged adjacently or opposingly to each other, and thus the swirling speed of each monitor nozzle is made different, so that the collision position of the fire extinguishing agent radiated from each monitor nozzle is changed. Variation in the fire extinguishing area is not constant, and as a result, it is possible to prevent a large amount of fire extinguishing agent from being sprayed to a specific location, and to uniformly and efficiently spray the fire extinguishing agent throughout the fire extinguishing area. There is.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a fire extinguishing section of a fire extinguishing area in a large space to which the present invention is applied.

FIG. 2 is a front view showing an example of a monitor nozzle that can be used in the present invention.

FIG. 3 is a system diagram showing a hydraulic system that performs turning control and elevation control of a monitor nozzle.

FIG. 4 is a block circuit diagram showing a control circuit that controls the hydraulic system shown in FIG. 3;

FIG. 5 is a flowchart illustrating an operation according to the exemplary embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation according to an embodiment of the present invention.

[Explanation of symbols]

 Z Fire extinguishing section G1 to G4 Monitor nozzle 14 Water cannon rotating part 20 Water cannon main body 22 Hydraulic motor for swiveling (swirl device) 30 Encoder for swiveling EV Electromagnetic switching valve FV Flow control valve OP Hydraulic pump PC Control board CC Control circuit

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshiaki Okazaki 4-73 Kudanminami, Chiyoda-ku, Tokyo Nomi Disaster Prevention Co., Ltd. (56) References JP-A-62-155874 (JP, A) 4-117659 (JP, U) Actually open Hei 4-124170 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A62C 3/00 A62C 27/00-39/00

Claims (2)

(57) [Claims] 1. A fire extinguisher in which a plurality of monitor nozzles are installed in a fire extinguishing area of a large space to spray a fire extinguishing agent, wherein the plurality of monitor nozzles are reciprocated or continuously swirled. A swivel device is provided corresponding to each of the monitor nozzles, and the swirl speed of each monitor nozzle swirled by the swivel device is made different at least between adjacent monitor nozzles or between monitor nozzles arranged to face each other. And fire extinguisher. 2. A fire extinguisher for dispersing a fire extinguishing agent by disposing a plurality of monitor nozzles in a fire extinguishing area of a large space, wherein the plurality of monitor nozzles are reciprocated or continuously turned. A fire extinguisher wherein a turning device is provided corresponding to each of the monitor nozzles, and the turning speed of each monitor nozzle turned by the turning device is made different.