JPH034882A - Fire extinguishing equipment - Google Patents

Abstract

PURPOSE:To make a fire extinguishing equipment effective for preventing the spread of fire mutually in composite fire extinguishing blocks and to reduce equipment cost and an equipment space as well by simultaneously operating an water sprinkling fire extinguishing device and a foam fire extinguishing device or a mixed chemical fire extinguishing device by operating a common fire sensing means. CONSTITUTION:When a commonly provided fire sensing means 17 is operated, according to this operation, both an water sprinkling fire extinguishing device 13 and either the foam fire extinguishing device or a mixed chemical fire extinguishing device 11 execute fire extinguishing operation simultaneously. For example, when fire is generated in an water fire extinguishing block B protected by the water sprinkling fire extinguishing device 13, the spread of fire to fat and oil, etc., for example, in the general fire is effectively prevented in advance by the discharge of foam suitable for extinguishing this fire since the foam fire extinguishing device 11 is also operated together with the operation of the water sprinkling fire extinguishing device 13. By providing the foam fire extinguishing device 11, etc., the fire can be extinguished even in a place where water drop is hardly turned around.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to fire extinguishing equipment, and in particular, a fire extinguishing area protected by a water spray fire extinguishing system and a fire extinguishing area protected by a foam or mixed agent fire extinguishing system are combined. The present invention relates to fire extinguishing equipment suitable for such cases.

(Prior technology) For ordinary fires in buildings and factories, water spray extinguishing equipment can efficiently extinguish large areas, but for oil fires and three-dimensional fires, foam or mixed agent extinguishing equipment is suitable. There is.

Therefore, for example, foam fire extinguishing equipment should be installed in areas where oil and fat fires such as paints and solvents are likely to occur, areas where three-dimensional fires are likely to occur due to large equipment, etc., and crowded areas such as manufacturing equipment, etc., and in other cases. are equipped with water spray fire extinguishing systems, each of which is monitored by various fire detection means.

(Problem n to be solved by the invention) For example, in a paint factory where a general fire extinguishing area and an oil extinguishing area are combined, for example, a general fire can easily spread to adjacent oils and fats. As a result, the timing for initial extinguishing is lost, making it difficult to prevent the spread of fire.

Furthermore, in areas where manufacturing equipment and the like are crowded, if only a water spray fire extinguishing system is installed, water droplets will not circulate in the gaps between the manufacturing equipment, etc., making it difficult to completely extinguish the fire.

Furthermore, since a foam fire extinguishing system and a water fire extinguishing system are each provided independently in such a complex fire extinguishing area, equipment costs are high and equipment space is also required.

The purpose of this invention is to solve the problems of conventional fire extinguishing equipment and to propose a rational fire extinguishing equipment that is effective in preventing the spread of fire between multiple fire extinguishing areas and can reduce equipment costs and equipment space. shall be.

(Means for Solving the Problems) The configuration of the present invention for solving the above problems includes a water fire extinguishing area B protected by a water spray fire extinguishing system 13 and a foam fire extinguishing area B protected by a foam fire extinguishing system or a mixed agent fire extinguishing system 11. Or, it is a fire extinguishing equipment used when the mixed agent extinguishing area A is combined with each other, and the water spray extinguishing device 13 and the foam extinguishing device or the mixed agent extinguishing device 11 are simultaneously operated by the operation of the common fire detection means 17. It was made to work.

When the fire detection means 17 operates, a fire extinguishing bag Wt is installed on the downstream side of the secondary piping 21 of the simultaneous release valve 20, which is configured to communicate the pressure water of the downstream piping 19 to the secondary piping 21.
By providing the 130 water spray head 14 and the foam discharge head 12 of the foam fire extinguishing system 11 or the discharge head of the mixed agent fire extinguishing system, pressure water and its pressurized supply device 18, etc. are common to both fire extinguishing systems 13.11. It can be used for
Equipment costs and equipment space can be reduced.

(Function) When the fire detection means 17 provided in common operates,
As a result, both the water spray fire extinguishing system 13 and the foam fire extinguishing system or the mixed agent fire extinguishing system 11 extinguish the fire at the same time. Since the fire extinguishing device 13 operates and the foam extinguishing device 11 also operates, the spread of a general fire to, for example, oils and fats is effectively prevented by releasing foam suitable for extinguishing the fire.

Further, by providing the foam fire extinguishing device 11 or the like, it is possible to extinguish fires in places where water droplets are difficult to spread.

A water spray fire extinguishing device 1 is installed on the downstream side of the secondary piping 21 of the simultaneous release valve 20 which is configured to communicate the pressure water of the primary piping 19 to the secondary piping 21 by the operation of the fire detection means 17.
Since the water spray head 14 of No. 3 and the foam discharge head etc. 12 of the foam extinguishing device etc. 11 are respectively provided, pressurized water and its pressurized supply device 18 etc.
As a result, equipment costs and equipment space can be reduced compared to conventional systems.

(Embodiment) Next, an embodiment of the present invention will be described based on the fire extinguishing equipment illustrated in FIG. 1, which is suitable for use when the entire protected area is a painting workshop, for example, which is shown in a side view in FIG. .

The products 1 to be painted are fed into this painting workshop from the left side of FIG.
The upper part of the is painted.

The product 1 that has reached the end of the feed conveyor 3 is lifted by a lifting conveyor 6 installed on the ceiling 5, and while being transferred to the right as shown by the arrow, it is sprayed by a second spray nozzle group 7. The bottom part is painted.

At the end of the lifting conveyor 6, the product 1 is transferred to a delivery conveyor 8 on the floor 2 and delivered to, for example, a drying room on the right side of FIG.

Excess paint dripped from the product 1 during spray painting by the spray nozzle groups 4 and 7 accumulates in residue pits 9 and 10, respectively.

Therefore, in the painting workshop shown in Fig. 2, the residue pit 9.1
Since there is a risk of oil and fat fires in the vicinity of 0, the residue pit 9.10 is designated as a foam fire extinguishing area or a mixed agent fire extinguishing area A protected by a foam fire extinguishing system or a mixed agent fire extinguishing system 11.
A foam discharge head etc. 12 is provided above, and a residue pit 9 is provided.
．． Since there is a risk of a general fire in places other than 10, a water sprinkler rad 14 is provided above the residue pit 9 and 10 as a water fire extinguishing area B protected by a water sprinkler fire extinguishing device 13.

Grooves 15 and weirs 16 are provided around the residue pits 9 and 10 to prevent water sprayed from the water spray head 14 from flowing into the residue pits 9 and 10.

The illustrated water fire extinguishing system 13 and foam fire extinguishing system 11 are configured to operate simultaneously by the operation of a common fire detection means 17, and the pressurized water of the pressurized supply system 18 is supplied simultaneously from the negative side piping 19. A water sprinkling head 14 and a foam discharge head 12 are provided on the downstream side of a secondary piping 21 of the simultaneous opening valve 20, which is supplied to the primary side of the opening valve 20 and is opened by the operation of the fire detection means 17.

That is, the water in the water storage tank 22 is pressurized and sent to the primary pipe 19 by a pressurized supply device 18 such as a pump via a foot valve 23 and a suction pipe 24, and then is fed to the primary pipe 19 via a pressure-reducing release type simultaneous release valve 20.
Pressurized water is supplied to the primary side of the

The secondary side of the simultaneous release valve 20 is a secondary side pipe 21 and a branch pipe 25
It is connected to the water spray head 14 via.

The secondary pipe 21 is also connected by a pipe 26 to the primary side of a drug mixer 27, such as a pressure proportioner, and the secondary side of the mixer 27 is connected to the foam discharge head 12 via a branch pipe 28. be done.

The piping 26 is connected to, for example, an outer chamber of a diaphragm of a pressurized foam concentrate tank 30 through a pressurizing pipe 29, and the foam extinguishing agent concentrate in the diaphragm is connected to the suction side of the mixer 27 through a liquid feeding pipe 31. ing.

When a mixed agent fire extinguishing device is used instead of the foam fire extinguishing device 11, the foam stock solution tank 30 becomes a mixed drug stock solution tank, and the foam head 1
2 is a discharge head for mixed medicine.

As the mixed drug, for example, a fortified solution containing potassium carbonate as a main component can be used.

The back side of the simultaneous release valve 20 is connected to a fire detection means 17 which is arranged in a foam extinguishing area A and a water extinguishing area B via a branch pipe 32 and is composed of, for example, a closed sprinkler head 33;
It is connected to the manual start valve 34.

- Pressure water in the next pipe 19 is always supplied to the branch pipe 32 via the back side of the simultaneous release valve 20, and - a pressure switch 35 connected to the next pipe 19 detects the pressure of the pressure water and always maintains a predetermined pressure. The pressurized supply device 18 is controlled so that the pressure is maintained at .

Next, the operation will be explained.

When there is no fire, the primary pipe 19 up to the simultaneous release valve 20 and the branch pipe 32 that runs from the back of the simultaneous release valve 20 to the closed sprinkler head 33 and manual start valve 34 are unenergized. Pressure water is supplied by the pressure supply device 18, and there is no pressure water downstream from the secondary pipe 21.

When the pressure in these downstream pipes 19, branch pipes 23, etc. decreases due to leakage or the like, the pressure switch 35 operates to start the pressurized supply device 18, and when the pressure returns to a predetermined pressure, the activation is stopped.

For example, when a fire occurs in the water extinguishing area B, the closed sprinkler head 3 acts as a fire detection means 17 directly above the fire point.
3 is opened by heat, water is released, the pressure inside the branch pipe 32 is reduced, the pressure on the back of the valve of the simultaneous release valve 20 is reduced, the simultaneous release valve 20 is opened, and the pressure water in the primary side pipe 19 is transferred to the secondary pipe 32. It begins to be supplied to the side pipe 21.

° As a result, the pressurized water in the secondary pipe 21 is sprayed from all the water spray heads 14 to the water extinguishing area B via the branch pipe 25, and the pressure switch 35 is operated to start the pressurized supply device 18, and water spray continues. It will be done.

When the manual starting valve 34 is operated, the pressure inside the branch pipe 32 is reduced in the same manner as when the closed sprinkler head 33 is operated, and the simultaneous opening valve 20 is opened, so that the water spraying head 14 sprays water.

Pressure water sent to the secondary side piping 21 by the opening operation of the simultaneous release valve 20 is supplied to the foam stock solution tank 30 and the mixer 27 from the piping 26 via the pressurizing pipe 29.

The pressure water supplied to the foam stock solution tank 30 compresses a diaphragm, and the foam stock solution is extruded from the diaphragm and sent to the liquid sending pipe 31 .

When the pressurized water in the pipe 26 passes through the mixer 27 , it sucks the foam stock solution from the liquid feed pipe 31 and mixes it with water at a constant ratio, and the mixed liquid is sent to the branch pipe 28 and reaches the foam discharge head 12 . In the foam discharge head 12, air is sucked in and foamed, and the foam is discharged into the foam extinguishing area A.

In this way, the fire spot is extinguished by the water spray from the water spray rad 14, and at the same time, e.g. residue bits 9 or 10 in the foam extinguishing area A adjacent to the fire spot are protected by the foam ejected from the foam discharge head 12. This will prevent the spread of fire from the water extinguishing area B to the foam extinguishing area A.

Contrary to the above explanation, even if a fire breaks out in the foam fire extinguishing area A, the closed sprinkler head 33 directly above the fire point is opened, thereby reducing the pressure inside the branch pipe 32, and the simultaneous release valve 20 is opened. Then, pressurized water is supplied to the secondary pipe 21, and water sprinkling from the rad 14 and foam discharge from the foam discharge head 12 are performed simultaneously by the same operation as described above.

Therefore, the fire in the foam extinguishing area A is extinguished by the foam,
At the same time, the water extinguishing area B connected to the fire point is connected to the water spray head 1
The spread of fire from the foam fire extinguishing zone A to the water fire extinguishing zone B is prevented by the water spraying from the foam fire extinguishing zone A.

Since the water spray head 14 of the water fire extinguishing system B and the foam discharge head 12 of the foam fire extinguishing system A are connected to the downstream side of the secondary pipe 21 of the simultaneous release valve 20, the primary side which is the primary side of the simultaneous release valve 20 Side pipe 19, pressure supply device 18, pressure switch 3
The water spray fire extinguishing system B
It can be used in common with foam fire extinguishing system A and foam fire extinguishing system A, reducing equipment costs and equipment space.

Note that the water spray fire extinguishing system provided in the water fire extinguishing area and the foam fire extinguishing system installed in the foam fire extinguishing area are configured as independent devices, unlike the illustrated example, and the above-mentioned downstream piping, pressurized supply device, etc. It is also possible to install a dedicated water fire extinguishing system only, and use a foam fire extinguishing system that does not use pressurized water, and use a fire extinguishing system with only a common fire detection means. Since both the water spray fire extinguishing system and the foam fire extinguishing system operate, the spread of fire between the water fire extinguishing area and the foam fire extinguishing area can be prevented.

The water sprinkler fire extinguishing system and the foam fire extinguishing system are not limited to the illustrated example. For example, the simultaneous opening valve 20 may be activated by a sensor, for example, in addition to the closed sprinkler head 33 as shown in the illustrated example.

In addition, when carrying out fire extinguishing in crowded areas such as manufacturing equipment, the purpose can be achieved by installing water fire extinguishing equipment in normal areas and foam fire extinguishing equipment in areas with many gaps such as equipment.

(Effects of the Invention) Since the fire extinguishing equipment of the present invention is configured as described above, both the water spray fire extinguishing system 13 and the foam fire extinguishing system or the mixed agent fire extinguishing system 11 can be operated by the operation of the fire detection means 17 provided in common. fire extinguishing areas B and A simultaneously, thereby reliably preventing the spread of fire to extinguishing areas where no fire has occurred, and where water extinguishing areas and foam or mixed agent extinguishing areas are combined. This makes it suitable as fire extinguishing equipment.

In addition, since foam fire extinguishing equipment etc. can extinguish complex areas where water droplets cannot easily penetrate, the entire protected area can be completely extinguished.

A water spray fire extinguishing device 1 is installed downstream of the secondary piping 21 of the simultaneous release valve 20 which is configured to communicate the pressure water of the primary piping 19 to the secondary piping 21 by the operation of the fire detection means 17.
3 water spray head 14 and foam discharge head 1 of foam fire extinguishing device 11
2 or a mixed agent discharge head of the mixed agent extinguishing system, so that the pressure water and its pressurized supply device 1
8 etc. can be used in common for both of the above-mentioned fire extinguishing devices 13 and 11, which has the effect of reducing equipment costs and equipment space compared to conventional ones.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing a fire extinguishing equipment according to an embodiment of the present invention;
FIG. 2 is a side view of a fire extinguishing area using the fire extinguishing equipment of FIG. l...Product 2...Floor 3...Feeding conveyor 4.7...Spray nozzle group 5...Ceiling 6...Lifting conveyor 8...
Sending conveyor 9.10... Residue pit 11...
Foam fire extinguishing system (mixed agent fire extinguishing system) 12, 14, 1G, 18, 20, 22, 24, 6- 29, 31, 33, 34, A, B, foam discharge head 13...Water spray head
15...Groove weir 17...Fire detection means pressurized supply device 19...-Next side piping simultaneous release valve 21...
Secondary side piping water tank 23... Foot valve prevention valve 25.28... Branch pipe piping
27... Mixer pressurizing pipe 30... Foam stock tank liquid feed pipe 32... Branch pipe closed type sprinkler head manual start valve 35... Pressure switch foam fire extinguishing area (
Mixed agent fire extinguishing area) Water extinguishing area

Claims (2)

[Claims] (1) A water spray fire extinguishing system and a foam fire extinguishing system or a mixed agent fire extinguishing system are installed in the same protected area, and the water spray fire extinguishing system and the foam fire extinguishing system or the mixed agent fire extinguishing system are operated simultaneously by the operation of a common fire detection means. A fire extinguishing equipment characterized by being configured to operate. (2) The water spray head of the water spray fire extinguishing system and the foam Claim 1 characterized in that a foam discharge head of a fire extinguishing system or a discharge head of a mixed agent fire extinguishing system is provided respectively.
Fire extinguishing equipment as described.