JPH02271878A - Fire fighting system by fire engine truck - Google Patents

Abstract

PURPOSE:To obtain an economic fire fighting system, for which it is not necessary to link two pumpers, by injecting, mixing original foaming liquid, which is loaded on an original foaming liquid carrier, into water by an original foaming liquid pump and an original foaming liquid mixer and jetting the original foaming liquid by the pumper. CONSTITUTION:For the fire fighting system, the original foaming liquid mixer is loaded on an original foaming liquid carrier 1 and when the original foaming liquid is mixed into the water coming from a fireplug 2, and original foaming liquid can be easily mixed into the water with a prescribed rate by executing single control to the operation of the original foaming liquid pump to be loaded on this original foaming liquid carrier. Then, the large quantity of the original foaming liquid can be used as well by this carrier from the beginning. Accordingly, it is not necessary to link two pumpers 3 and the rational and economical fire fighting system can be obtained. and since the original foaming liquid mixer is not used for the pumper to suck and jet the water to which the original foaming liquid is mixed, the loss of pressure is made small for discharging pressure. Then, since a pump for discharging is singly operated, foaming fire fighting liquid can be jetted without any limit on operational control and fire fighting can be made complete to a high oil tank in a complex.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a firefighting system using fire engines in petroleum industrial complexes and the like.

(Prior Art) In petroleum-related plants such as petroleum complexes, chemical fire engines that emit foam extinguishing liquid, foam concentrate transport vehicles, and high-altitude water cannon trucks work together to extinguish fires.

The chemical fire truck is equipped with a water spray pump, a foam stock tank, a foam stock pump that injects the foam stock solution into water, and a foam stock mixer (hereinafter referred to as the mixer) that mixes the foam stock solution into water. ing.

In this chemical fire engine, the water pump sucks water and discharges water, but at that time, the foam concentrate pump is injected into the mixer and mixed with the water discharged from the water discharge pump. This foam mixture extinguishing liquid is ejected from the nozzle. Then, the shortage of foam concentrate in the foam concentrate tank is replenished by the following foam concentrate transport vehicle.

The foam concentrate transport vehicle carries a foam concentrate tank and a foam concentrate pump, and the foam concentrate pump transfers the foam concentrate of the army to the chemical fire engine.

(Problems to be solved by the invention) In actual firefighting activities at petroleum complexes,
Fire hydrants are often used as a water source for extinguishing fires.

In this case, as shown in Figure 2, the pump water suction part of the chemical fire engine a is connected to the fire hydrant. In this state, a foam extinguishing liquid mixed with a foam concentrate can be emitted from the chemical weed control a by the water discharge pipe d, but there are the following problems.

In a chemical fire engine, the water spray pump and the foam concentrate pump are generally operated by the fire engine's engine through gears, and the two pumps are controlled in parallel, and when controlled independently, One side is separated from the engine.

The loaded mixer cannot inject a predetermined amount of foam concentrate into water unless the water discharge pressure and the injection pressure of the foam concentrate are within the specified range, and the fire extinguishing performance will be extremely reduced.

Under normal operating conditions, when the water suction head of the water pump of a chemical fire engine is 0 to 7 m, the foam concentrate is mixed into the water at the specified concentration. When the water discharge pump is connected, the suction pressure of the water discharge pump is high, so the pump discharge pressure is 10 water heads higher than when water is sucked from the flat water surface. , the discharge pressure of the foam concentrate pump does not increase in proportion to the ten-hydro head, and the mixing ratio of the foam concentrate in the mixer decreases.

Therefore, in order to emit foam extinguishing fluid of a predetermined concentration using a fire hydrant as a water source in a chemical fire engine, the water spray pump of chemical fire engine a should be stopped without driving the engine, only the foam stock pump should be driven and controlled, and the foam should be foamed in the mixer. Mix the stock solution into water at the specified ratio.

In this state, the water discharge pressure in the chemical fire engine a is lower than the water pressure of the fire hydrant, so it cannot be used for discharging water to high places.Therefore, a new fire pump vehicle e is connected to the water discharge pipe d, and this fire hydrant is used. The reality is that firefighting efforts are being carried out by increasing the pressure of water discharged using one vehicle e's pump.

In view of the extremely uneconomical current situation in which two pump trucks must be connected in the above-mentioned firefighting method for oil complex fires, this invention provides a new firefighting method using dispatch.

(Means for solving the problem) The firefighting method using the fire engine of this invention is the first
In the figure, a foam concentrate transport vehicle 1 is loaded with a foam concentrate pump and a foam concentrate mixer for mixing the foam concentrate into water, and a fire hydrant 2 is connected to the water intake part of a fire pump vehicle 3 via the foam concentrate mixer. A method characterized in that the foam concentrate loaded in the foam concentrate transport vehicle 1 is injected and mixed with water in a foam concentrate mixer using a foam concentrate pump, and the mixed foam extinguishing liquid is radiated by a fire pump vehicle 3. It is.

(Function) The pressure of the water conveyed from fire hydrant 2 to the foam concentrate carrier is 0 to 1.
00m or more, but the foam concentrate pump can be operated independently and mixes the foam concentrate with water at a specified mixing ratio in the mixer.
The fire extinguishing fluid can be emitted by the fire pump truck 3 depending on the scale of the fire.

Naturally, fire pump truck e can be used as a chemical fire truck with a pump or a high-altitude water cannon truck.

If the fire pump vehicle 3 is a conventional chemical fire engine that carries a mixer, this mixer may not be used.

Further, in this foam stock solution transportation, other foam stock transport vehicles replenish the foam stock solution as usual.

(Effects of the Invention) The firefighting system according to the present invention includes a foam mixer loaded on a conventional foam stock transport vehicle, and when mixing the foam stock solution into water coming from a fire hydrant in the foam stock transport vehicle,
By controlling the foam concentrate pump loaded on the foam concentrate transport vehicle to operate independently, the foam concentrate can be easily mixed into water at a predetermined ratio. A large amount of foam concentrate can also be used from the beginning using this carrier.

There is no need to connect two fire pump trucks as in the past, making it an extremely rational and economical firefighting system.

Fire pump trucks that absorb and release water mixed with foam concentrate do not use a foam concentrate mixer, so there is little pressure loss in water discharge pressure, and the water discharge pump is operated independently.
It has many features, such as being able to emit fire extinguishing foam without any restrictions on operation control, and being able to extinguish fires in expensive oil tanks in industrial complexes.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a firefighting system using a fire engine according to the present invention, and FIG. 2 is an explanatory diagram of a conventional firefighting system.

Claims (1)

[Claims] (1) Load a foam concentrate pump and a foam concentrate mixer for mixing the foam concentrate into water on a foam concentrate transport vehicle, connect a fire hydrant to the water intake part of the fire pump vehicle via the foam concentrate mixer, and A firefighting method using a fire engine characterized by injecting and mixing loaded foam concentrate into water in a foam concentrate mixer using a foam concentrate pump in a concentrate transport vehicle, and ejecting the mixed foam extinguishing liquid from a fire pump vehicle.