JPH034881A - Fire extinguishing equipment - Google Patents

Abstract

PURPOSE:To protect a local fire extinguishing block such as an electric equipment from damage caused by a fire extinguishing agent such as water, etc., to be used for a wide fire extinguishing area such as a factory, etc., by covering the local fire extinguishing area with a shield body to protect the local fire extinguishing area from the fire extinguishing agent. CONSTITUTION:The normal fire extinguishing block to be set in a factory 1 is defined as a wide fire extinguishing area A and a narrow block with an electric equipment 2 as a center in a certain fire extinguishing area A is defined as a local fire extinguishing area B. In the wide fire extinguishing area A, only the suitable number of closed-type sprinkler heads 4, for example, are arranged as fire sensing means S1 near the ceiling and a sprinkler head 5, for example, is used as a fire extinguishing means F1. An umbrella-shaped or box-shaped shield body 23 is provided so that the electric equipment 2 can not receive water drop sprinkled by the sprinkler head 5 when the fire extinguishing means F1 is operated in the wide fire extinguishing block A. Thus, the electric equipment 2 covered with the shield body 23 is not affected by the water sprinkled from the sprinkler head 5 and not stained by the water for the fire in the wide fire extinguishing area A.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a fire extinguishing equipment suitable for a local fire extinguishing area included within a wide area fire extinguishing area.

(Conventional technology) Sprinkle fire extinguishing equipment such as sprinkler heads has conventionally been used for fire extinguishing areas in large buildings such as manufacturing plants, warehouses, power plants, parking lots, etc. because of its low equipment cost and suitable for initial fire extinguishing. It is generally used as

In this water spray fire extinguishing equipment, a closed type water sprinkler head sprays water locally, and an open type water sprinkler head sprays water over the entire area.

(Problem to be Solved by the Invention) Therefore, although it is effective in extinguishing fire points and preventing the spread of fire, in the case of water sprinkler fire extinguishing equipment, the entire area in the fire extinguishing area including the activated water spray head becomes flooded with water, Areas other than the immediate vicinity, preferably areas that have not been sprayed with water, will also be affected by the water.

For example, in manufacturing plants, motors, electrical equipment, etc. that do not like moisture are exposed to water, making cleanup difficult.

The object of this invention is to propose a combination type fire extinguishing equipment that can protect local fire extinguishing areas such as the electrical equipment mentioned above from damage caused by fire extinguishing agents such as water used in wide area fire extinguishing areas such as factories.

(Means for Solving the Problems) The configuration of the present invention for solving the above problems includes a fire detection means Sl and a fire extinguishing means F for extinguishing a wide fire area A with one extinguishing agent, and In a fire extinguishing system in which a local fire extinguishing zone B that dislikes the use of extinguishing agents is included in a wide fire zone A, a shield 2 that can protect the local fire extinguishing zone B from the extinguishing agent
3.

local fire detection means S2 dedicated to local fire extinguishing area B;
By providing the local fire extinguishing means F2 in this local fire extinguishing area B, the local fire extinguishing area B can be effectively extinguished.

(Function) A fire in the wide area fire extinguishing zone A outside the local fire extinguishing zone B is detected by the fire sensing means SI, and extinguishing agent is released by the operation of the fire extinguishing means F to extinguish the fire.

At this time, the local fire area B, which is unrelated to the fire in the wide area fire extinguishing area A, is protected from damage by the extinguishing agent by the shield 23, so cleaning up after the fire is extinguished is not necessary.

local fire detection means S2 dedicated to local fire extinguishing area B;
Since the local fire extinguishing means F2 is provided in the local fire extinguishing area B, fires within the local fire extinguishing area B can be effectively dealt with.

(Example) FIG. 1 is a front view of an example of the present invention.
The fire extinguishing equipment for a factory 3 having manufacturing equipment 1 and electrical equipment 2 will be exemplarily described.

The normal fire extinguishing area established within Factory 1 is designated as wide area fire extinguishing area A.
A narrow area centered around the electrical equipment 2 within a certain wide area fire extinguishing area A is defined as a local fire extinguishing area B.

In the wide-area fire extinguishing area A, an appropriate number of closed-type sprinklers 4 are arranged near the ceiling as the fire detection means S, and water sprinklers 5 are arranged as the fire extinguishing means F1.
is used.

That is, the water in the water storage tank 6 is pressurized and sent to the water pipe 10 by a pressurizing supply device 9 such as a pump via a foot valve 7 and a suction pipe 8, and is then sent to the water pipe 10 under pressure through a foot valve 7 and a suction pipe 8. is supplied with pressurized water.

The secondary side of the simultaneous release valve 11 is connected to the water spray head 5 via a main pipe 12 and a branch pipe 13, respectively.

The back side of the simultaneous release valve 11 is connected to the closed sprinkler head 4 via a main pipe 14 and a branch pipe 15, and
It is also connected to the primary side of a manual starting valve 17 via a branch pipe 16 .

In the local fire extinguishing area B, the heat sensitive part 19 having a function of communicating the primary side 30 and the secondary side 31 of the heat sensitive operating valve 18 with each other by sensing the temperature caused by the occurrence of a fire is used as the local fire sensing means S2. For example, a water spray head 20 is used as the local fire extinguishing means F2.

That is, a pipe 21 branched from the water pipe 10 is connected to the downstream side 30 of the heat-sensitive valve 18ψ, and each water spray head 20 is connected to the secondary side 31 of the heat-sensitive valve 18 via the pipe 22. ing.

An umbrella-shaped or box-shaped shield 23 is provided to prevent the electrical equipment 2 from receiving water droplets scattered by the water spray head 5 when the fire extinguishing means F1 of the wide area fire extinguishing area A is activated.

Pressure water in the water pipe 10 is always supplied to the main pipe 14 via the back side of the simultaneous release valve 11, and pressurized water pressure is detected by a pressure switch 24 connected to the water pipe 10 and maintained at a predetermined water pressure. , the pressurized supply device 9 is controlled.

As illustrated in FIG. 2, the thermally operated valve 18 has a sprinkler head as a thermally sensitive part 19 provided on the outer wall of the valve, and a clapper 28 is connected to an arm 27 which is latched by a latch 26 via a stem 25. The valve hole 29 is pressed and closed.

The primary side 30 of the thermally operated valve 18 is connected to the piping 21, and the secondary side 31
are each connected to the water spray head 20 via a tube 22.

Next, the operation will be explained.

Normally (when there is no fire outbreak), the water pipe 10 and piping 21 up to the simultaneous release valve 11 and the thermally operated valve 18 are pressurized by the pressure supply device 9, and at the same time, the closed sprinkler head 4 and the manually activated Main pipe 14 and branch pipes 15.16 to valve 17
is also pressurized.

These water pipes 10, pipes 21, main pipes 14, branch pipes 15.1
If the pressure of the pressure supply device 6 or the like decreases due to leakage or the like, the pressure switch 24 is activated to activate the pressurization supply device 9, and when the predetermined pressure is restored, the activation is stopped.

When a fire breaks out outside the local fire extinguishing zone B of the electrical equipment (i12), the closed sprinkler head 4 opens due to heat and releases water, reducing the pressure inside the main pipe 14 and branch pipes 15, and causing the simultaneous release valve 11 to open. The pressure on the back side decreases and the valve 1 opens all at once.
1 is open and the primary side and secondary side communicate with each other.

As a result, the pressurized water in the water pipe 10 passes through the main pipe 12 and is sprayed from all the water spray heads 5, and the pressure switch 24 is operated to start the pressurized supply device 9 and water spray continues.

When the manual start valve 17 is operated, the branch pipe 16 and the main pipe 14
is depressurized, the simultaneous release valve 11 is opened, and water is sprayed from the water spray head 5 in the same manner as when the closed type sprinkler head 4 is operated.

The water sprinkled from the water spray head 5 does not fall on the electrical equipment 2 covered by the shield 23, and the electrical equipment [2] is no longer contaminated with water due to the fire in the wide fire extinguishing area A.

A fire in a wide area fire extinguishing area is effectively extinguished by water sprinkling from the water spray heads 5 disposed throughout the wide area.

When a fire breaks out in the electrical equipment 2 in the local fire extinguishing area B, the heat causes the glass bulb of the sprinkler head, which serves as the heat-sensitive part 19 of the heat-sensitive operating valve 18, to rupture, causing the latch 2 to break.
6 is removed from the arm 27, and the clapper 28 is opened.

As a result, the pressure water in the pipe 21 flows from the primary side 30 to the secondary side 31 through the valve hole 29 of the heat-sensitive valve 18, and
2, water is sprayed from the water spray head 20 toward the fire point in the local fire extinguishing area B, and the fire is extinguished.

In the wide area fire extinguishing area A outside the local fire extinguishing area B, the fire detection means S does not operate at all, so water is not sprayed from the water spray head 5.

In the illustrated example, the local fire extinguishing means F2 in the local fire extinguishing area B is constituted by a water spray head 20, so that pressurized water as a fire extinguisher, a water storage tank 6, a foot valve 7, a pressurized supply device 9
This has the advantage that the water pipes 10 and the like can be shared with those for wide area fire extinguishing areas, and the equipment is simple and low cost.

As the local fire extinguishing means F2, although not shown, a completely independent equipment may be used for the fire extinguishing means F1 in the wide area fire extinguishing area A, and gas extinguishing equipment such as carbon dioxide, which is suitable for extinguishing the electrical equipment 2, may be used. equipment or foam fire extinguishing equipment,
For example, automatic fire extinguishing equipment using a fire extinguishing agent suitable for fire extinguishing in the local fire extinguishing area B, such as powder fire extinguishing equipment, may be used alone or in combination.

In addition, in the local fire extinguishing area B, the heat sensitive part of the closed type sprinkler head is used as the local fire detection means, and the water discharge nozzle part of the closed type sprinkler head is used as the local fire detection means, and it is branched from the pipe 21. One or more closed sub-linker heads may be provided.

In addition, in local fire extinguishing zone B for electrical equipment 2, etc., there is almost no probability of a fire occurring compared to wide area fire extinguishing zone A.
It is considered that the local fire sensing means S2 operates after the fire sensing means Sl operates.

Therefore, the piping 21 of the local fire extinguishing means F2 is
In this case, the pipe 21 can be connected to any part of the main pipe 12 and the branch pipe 13, making it easier to carry out piping work and reducing costs.

When water is used as a fire extinguishing agent as described above as the fire extinguishing means F1 for a wide area fire extinguishing area, various types of water spray heads 5 can be used, such as an open type sprinkler head, a spray head, and a drencher head.

The simultaneous opening valve 11 may be activated by a sensor, for example, in addition to the closed type sprinkler head 4 as shown in the illustrated example.

The raging heat operating valve 18 used to operate the local fire extinguishing means F2 is configured to use a simultaneous release valve 11 like the one used for the fire extinguishing means F1 in the wide area fire extinguishing area A. Therefore, the closed sprinkler head 4 is used for local fire detection. It may also be used as means S2.

As is clear from the above explanation, both the wide area fire extinguishing area A and the local fire extinguishing area B each have a fire detection means Sl that is most suitable for the type of fire expected.
It is sufficient to use the local fire detection means S2, the fire extinguishing means Fl, and the local fire extinguishing means F2, and the above-described illustrated example shows only one example thereof.

(Effects of the Invention) Since the fire extinguishing equipment of the present invention is configured as described above, the extinguishing agent in the extinguishing operation when a fire occurs in the wide area fire extinguishing area A outside the local fire extinguishing area B is covered by the shield 23. This eliminates the problem of the local fire extinguishing area B, which is unrelated to a wide-area fire, being contaminated by extinguishing agents.

The local fire extinguishing area B is economical because fire extinguishing activities are carried out effectively by the dedicated local fire detection means S2 and local fire extinguishing means F2 provided therein.

[Brief explanation of the drawing]

FIG. 1 is a front view of one embodiment of the present invention, and FIG. 2 is a partially detailed sectional view of FIG. 1. 1... Manufacturing equipment 2... Electrical equipment 3... Factory 4... Closed type sprinkler head 5. 20... Watering head 6... Water tank 7... Foot valve 8
... Suction pipe 9 ... Pressure supply device 10 ... Water pipe 11 ... Simultaneous release valve 12 ... Main pipe 13 ...
・Branch pipe 14... Main pipe 15.16... Branch pipe 17... Manual start valve 18... Heat-sensitive operation valve 19... Heat-sensitive part 21... Piping 2
2... Pipe 23... Shield 24... Pressure switch 25... Stem 26... Latch 27... Arm 28... Clapper 29
...Valve hole 30...-Next side 31...Secondary side A...Wide fire extinguishing area B...Local fire extinguishing area Sl...Fire detection means S2...Local fire detection means Fl...Fire extinguishing Means F2: Local fire extinguishing means Figure 2

Claims (2)

[Claims] (1) In a fire extinguishing system that is equipped with fire detection means and extinguishing means for extinguishing a wide area fire extinguishing area with one extinguishing agent, and where the local fire extinguishing area where the use of the extinguishing agent is disliked is included in the wide area fire extinguishing area, A fire extinguishing equipment characterized in that a fire extinguishing area is covered with a shield that can protect from the extinguishing agent. (2) local fire detection means dedicated to local fire suppression areas;
2. The fire extinguishing equipment according to claim 1, wherein local fire extinguishing means is provided in the local fire extinguishing area.