JP2691453B2 - Fire extinguishing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fire extinguishing facility, and in particular, one protective area including an area where a general fire may occur and an area where oil and fat fires may occur. The present invention relates to fire extinguishing equipment suitable for

(Prior art) For example, in the case of a paint factory, where there is an area where there is a risk of oil and grease fires such as paints and solvents, and an area where there is a possibility of general fire, the fire extinguishing operation is complete. In order to expect the above, it is conventionally known that each of the water spray fire extinguisher and the foam fire extinguisher is equipped with, so to speak, double so as to independently extinguish the entire protected area.

Then, when a fire occurs, one or both of the two fire extinguishing devices are activated by manual operation.

(Problems to be Solved by the Invention) In the conventional fire extinguishing equipment, when a fire is notified, it is determined whether the fire is a general fire or a fats and oils fire, and each fire extinguishing apparatus is activated, so that there is the following problem.

(A) The time delay until the fire extinguishing device is activated depending on the type of fire becomes considerably long, and initial fire extinguishing is difficult.

A general fire often occurs, and this often develops into a fat and oil fire. In this case, however, the start delay of the foam fire extinguisher tends to be long.

(B) It is wasteful to operate both fire extinguishers at the same time regardless of the type of fire in order to prevent such a delay.

For example, when only the oil-and-fat fire occurs, when the water spray extinguishing device is operated, the fire often spreads due to the water spray.

(C) Since the fire extinguisher is installed twice, the equipment cost and the equipment space are large.

The present invention has been devised so that such a problem of the conventional fire extinguishing equipment can be solved, and a fire extinguisher suitable for this can be operated without delay according to the type of fire, and further, a commonly used part can be incorporated. The purpose is to propose a rational fire extinguishing system.

(Means for Solving the Problem) The configuration of the present invention for solving the above-mentioned problem is that one sprayed area has a water spray fire extinguisher 13 and a chemical mixture fire extinguisher 15.
Fire extinguishing equipment provided so as to be able to extinguish the entire protected area independently, by detecting a general fire and operating a spray fire extinguisher 13, a general fire detection means 12, and a fat and oil fire, etc. are detected. Special fire detection means 11 for operating the chemical-mixed fire extinguisher 15 is provided, and when the chemical-mixed fire extinguishing apparatus 15 operates, both of the fire extinguishing apparatuses 13 and 15 are set so that the sprinkler fire extinguishing apparatus 13 does not operate. It is linked.

The chemical-mixed extinguishing device 15 is configured to perform an extinguishing agent releasing operation by pressurized water supplied to the water spray extinguishing device 13.

(Function) When a general fire occurs, the general fire detection means 12 activates the water spray extinguisher 12 to extinguish the entire area with water, and
When fire spreads on oils and fats, the special fire detection means 11 detects this and the chemical-mixed extinguishing device 15 operates, the oil and fires are effectively extinguished, and the water spray extinguishing device 13 stops operating. The general fire was extinguished by taking the place of shoulders by the chemical-mixing extinguishing device 15, and there was no fear that the oil and fire would spread due to watering.

When an oil-based fire or the like first occurs, even if the general fire detection means 12 operates thereafter, only the chemical-mixed extinguishing device 15 operates by the special fire detection means 11 to extinguish the entire area with the extinguishing agent, Fire progression is prevented.

In this way, fire extinguishing by chemicals is prioritized, so the risk of, for example, oil fires expanding is reduced, and each fire is automatically discriminated and a quick and efficient fire extinguishing operation is executed, resulting in the initial fire extinguishing. It became effective equipment for.

Since the chemical-mixed extinguishing device 15 is configured to perform the extinguishing agent releasing operation by the pressurized water supplied to the sprinkling extinguishing device 13, for example, the pressurized supply device 20 for generating pressurized water, a water supply system facility, or the like. Is the extinguishing system 13, 15
It is sufficient to use only one unit that is shared with each other, and the equipment cost and the equipment space are reduced.

(Embodiment) Next, an embodiment of the present invention will be described based on the fire extinguishing equipment illustrated in FIG. 1 as a side view, which is suitable when, for example, a coating work area is one protected area. .

The product 1 to be coated is loaded on the feeding conveyor 3 provided on the floor 2 and fed into the coating work site from the left side in FIG. 2, and the upper surface portion of the product 1 is moved by the spray nozzle group 4 in FIG. Painted.

The product 1 that has reached the end of the feeding conveyor 3 is hung up by the hoisting conveyor 6 provided on the ceiling 5 and transferred to the second spray nozzle group 7 while being transferred to the right as shown by the arrow. Therefore, the lower surface is painted.

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

Product 1 during spray painting with spray nozzle groups 4 and 7
The excess paint dripped from the pits accumulates in the residue pits 9 and 10, respectively.

Oil fire detection means 11 for detecting oil fires is installed as a special fire detection means near the residue pits 9 and 10 to detect general fires that may occur in places other than the residue pits 9 and 10. General fire detection means 12 for
An appropriate number of them are arranged near the ceiling 5.

The water sprinkling head 14 of the water spray extinguisher 13 and the chemicals are provided above the residue pits 9 and 10 and above the residue conveyor pits 9 and 10 in the areas other than the residue pits 9 and 10 such as the infeed conveyor 3, the outfeed conveyor 8 and the lifting conveyor 6. A large number of foam discharge heads 16 of a foam fire extinguisher 15 as a mixed fire extinguisher are arranged so that the water spray fire extinguisher 13 and the foam fire extinguisher 15 can individually extinguish the entire area of the coating work area. .

The illustrated water spray extinguishing apparatus 13 pressurizes the water in the water storage tank 17 to the water supply pipe 21 by the pressure supply device 20 such as a pump through the foot valve 18 and the suction pipe 19, and supplies the water through the solenoid valve 22. Supplied to the primary side of the vacuum release type simultaneous opening valve 23, and the simultaneous opening valve 23
The secondary side of the structure is connected to the sprinkling head 14 via a main pipe 24 and a branch pipe 25.

The valve rear surface of the simultaneous opening valve 23 is connected via a main pipe 26 and a branch pipe 27 to a closed sprinkler head 28 as the general fire detection means 12 of the water spray fire extinguisher 13 and a manual start valve 29.

The foam extinguishing apparatus 15 illustrated above supplies pressurized water by a water supply pipe 30 branched from a water supply pipe 21, and sends pressurized water divided by a pressure pipe 31 to an outer chamber of a diaphragm of a pressurized stock solution tank 32, for example. The inside of the mixer is connected to the extinguishing agent suction side of a mixer 34 such as a pressure proportioner by a liquid supply pipe 33, and the secondary side of the mixer 34 is connected to the primary side of the simultaneous release valve 36 via a pipe 35. The secondary side of the simultaneous opening valve 36 is connected to the bubble discharging head 16 via a main pipe 37 and a branch pipe 38.

The valve rear surface of the simultaneous opening valve 36 is connected to a solenoid valve 40 via a pipe 39, and the solenoid valve 40 is opened by a fire sensor 41 as the oil fire detection means 11 detecting the fire. It is a structure that discharges the pressurized water inside 39.

The pressure in the main pipe 37 connected to the secondary side of the release valve 36 is detected by the pressure switch 42, and the solenoid valve 22 is detected by the pressure switch 42 that detects the pressure in the main pipe 37 by opening the simultaneous release valve 36. Is a structure that closes and stops the water supply to the simultaneous opening valve 23.

The pressure of the pressurized water in the water supply pipe 21 is detected by the pressure switch 43 and is constantly maintained at a predetermined pressure by a pressure supply device.
20 is controlled.

The solenoid valve 40 is configured to be opened by operating the manual switch 44.

When the foam extinguisher 15 is to be extinguished with other chemicals, basically the foam stock solution tank 32 may be used as the stock solution of another chemical. And change it.

As other chemicals, for example, a strengthening solution of a solution containing potassium carbonate as a main component or the like can be used.

 Next, the operation will be described.

When there is no fire, the water pipe 21 and the simultaneous open valve
Main pipe 26 through the pipes up to 23 and the back valve side of the simultaneous opening valve 23,
Bubbles from the pipe 39 to the solenoid valve 40 and from the pressurizing pipe 31 to the closed type sprinkler head 28 via the branch pipe 27, the water supply pipe 30, the mixer 34, the pipe 35 and the back valve side of the simultaneous opening valve 36. Pressurized water is supplied by the pressure supply device 20 until reaching the outer chamber of the diaphragm of the stock solution tank 32.

Therefore, in the foam liquid tank 32, the diaphragm is compressed by the pressurized water, and the foam liquid reaches the suction side of the mixer 34 via the liquid supply pipe 33.

When the pressure decreases due to leakage in the path through which the pressurized water passes, such as the water supply pipe 21, the simultaneous opening valve 23, the main pipe 26, the branch pipe 27, etc., the pressure switch 43 operates to activate the pressurized supply device 20, When the pressure is restored to a predetermined level, the startup is stopped.

Then, when a fire occurs near the feeding conveyor 3, the feeding conveyor 8, and the lifting conveyor 6 in the area other than the residue pits 9 and 10, the closed type sprinkler head 28 near the fire point is opened by heat and the branch pipe The pressurized water of 27 is sprinkled, the pressure in the main pipe 26 is reduced, the pressure on the valve back surface of the simultaneous opening valve 23 is reduced, the simultaneous opening valve 23 is opened, and the primary side and the secondary side thereof communicate.

As a result, the pressurized water in the water supply pipe 21 is sprinkled from all the sprinkling heads 14 via the main pipe 24, the pressure switch 43 operates to activate the pressurized supply device 20, and the water sprinkling is continued.

Even when the manual start valve 29 is operated, the main pipe 26 is depressurized and the simultaneous opening valve 23 is opened as in the case of opening the closed type sprinkler head 28, and the water sprinkling head 14 sprinkles water.

If the fire spreads to the slag pit 9 or 10, or if a fire occurs in the slag pit 9 or 10, the flame sensor 41 performs a sensing operation, or the fire is sprinkled and extinguished. If the worker determines that the above cannot be dealt with, the manual switch 44 is operated to start extinguishing the fire by discharging bubbles.

That is, the sensing operation by the flame sensor 41 or the manual switch 44
When the operation is performed, the solenoid valve 40 is opened, the pressure in the pipe 39 is reduced, the pressure on the valve back surface of the simultaneous opening valve 36 decreases, the simultaneous opening valve 36 is opened, and the pipe 35 and the main pipe 37. And the pressurized water in the water supply pipe 30 and the pipe 35 starts to flow.

When the pressurized water flowing through the water supply pipe 30 passes through the mixer 34, the foaming stock solution is sucked from the liquid supply pipe 33 and mixed with water at a constant ratio,
Bubbles are discharged from the bubble discharge head 16 through the pipe 35, the main pipe 37, and the branch pipe 38.

When bubbles flow through the main pipe 37, the pressure switch 42 operates to close the solenoid valve 22 and stop the pressurized water supply to the simultaneous opening valve 23.

Therefore, if water is being sprinkled from the water sprinkling head 14 before the start of foam discharge, the fire extinguishing due to water spray will be stopped together with the start of foam discharge, or the foam fire extinguishing will be started before the start of water spray extinguishing. When the general type of fire detection operation by the closed type sprinkler head 28 is performed, water is not sprinkled.In this way, both the fire extinguishing operation by foam release and the fire extinguishing operation by water sprinkling are not performed at all. The fire extinguishing operation continues with priority.

As a result, the risk of spreading to oil and fat fires due to the fact that sprinkling and extinguishing fires all the time when a general fire occurs is reduced, and each fire is automatically discriminated, and quick and efficient fire extinguishing operations are performed.

The foam extinguishing device 15 performs the foam discharging operation by the water spray extinguishing device 13
Since it is configured to be performed by the pressurized water supplied to the, the pressure supply device 20 and the water supply system equipment for generating the pressurized water, the foam extinguishing device 15, the water spray extinguisher device 13 is sufficient only one group, equipment The cost and equipment space could be reduced.

The water spray extinguisher 13 may use, for example, a closed sprinkler head instead of the open water spray head 14.

The flame sensor 41 as the oil / fat fire detecting means 11 of the foam extinguisher 15 may use a thermal sensor that is protected from water droplets caused by watering.

The simultaneous opening valve 23 may be instructed to be opened by a fire detector (not shown) provided on the ceiling 5.

(Effects of the Invention) According to the fire extinguishing equipment of the present invention, when a general fire occurs, the water spray extinguishing apparatus 13 is automatically started, and water is sprinkled to carry out fire extinguishing activities inexpensively and quickly. When the fire spreads and changes to a special fire, the chemical extinguishing device 15 is automatically activated instead and the water spray extinguishing device 13 is stopped. Has been resolved.

Further, when an oil or fat fire or the like first occurs, the chemical-mixing extinguishing device 15 operates to prevent the progress to a general fire. In this way, each fire is automatically discriminated and a fire suitable for each fire is Since the activities are carried out, it became an effective facility for the initial fire fighting activities.

Since the chemical-mixed extinguishing device 15 is configured to perform the extinguishing agent discharging operation by the pressurized water supplied to the water spray extinguishing device 13, for example, the pressurized supply device 20 for generating the pressurized water is generated.
For the above, only one unit shared by both the fire extinguishers 13, 15 is sufficient, and the equipment cost and the equipment space are reduced.
It became an excellent fire extinguisher.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a system diagram of fire extinguishing equipment, and FIG. 2 is a side view of a protected area to which the fire extinguishing equipment of FIG. 1 is applied. 1 ... Product, 2 ... Floor 3 ... Sending conveyor 4,7 ... Spray nozzle group, 5 ... Ceiling 6 ... Lifting conveyor, 8 ... Sending conveyor 9,10 ... Residue pit 11 ... Special Fire detection means (oil and oil fire detection means) 12 …… General fire detection means 13 …… Spraying fire extinguisher, 14 …… Sprinkling head 15 …… Chemical mixture fire extinguisher (foam extinguisher) 16 …… Foam discharging head, 17… … Water tank 18 …… Foot valve, 19 …… Suction pipe 20 …… Pressurized supply device, 21,30 …… Water pipe 22,40 …… Solenoid valve, 23,36 …… Simultaneous opening 24,37 …… Main pipe, 25, 38 …… Branch pipe 26 …… Main pipe, 27 …… Branch pipe 28 …… Closed type sprinkler head 29 …… Manual start valve, 31 …… Pressurizing pipe 32 …… Foam stock solution tank, 33 …… Sending Liquid pipe 34 …… Mixer, 35 …… Piping 39 …… Pipe, 41 …… Flame sensor 42,43 …… Pressure switch 44 …… Manual switch

Claims (2)

(57) [Claims] 1. A fire extinguisher equipped with a water spray fire extinguisher and a chemical mixture fire extinguisher in a single protected area so as to be able to extinguish the entire protected area independently, and water is sprayed by detecting a general fire. General fire detection means for operating the fire extinguisher and special fire detection means for operating the chemical mixed fire extinguisher by detecting a special fire such as oil / fat fire are provided, and when the chemical mixed fire extinguisher operates, Fire extinguishing equipment, characterized in that both of the fire extinguishers are interlocked so that the water spray fire extinguisher does not operate. 2. The fire extinguisher equipment according to claim 1, wherein the chemical-mixed fire extinguisher is configured to perform an extinguishing agent discharging operation by pressurized water supplied to the water spray fire extinguisher.