JP2000202059A - Water cannon type fire extinguisher using pneumatic pressure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge water to a higher place farther to extinguish effectively a medium rise building fire. SOLUTION: A water discharger 1 is installed at the leading end of a ladder of an aerial ladder truck. The water discharger 1 has a water cannon 4 and a plurality of hydraulic tanks 8. Pneumatic zones in the hydraulic tanks 8 are pressurized with the medium pressure compressor of auxiliary machinery provided in a support vehicle, water is supplied to one of the water cannons 4 sequentially by pneumatic pressure with a timer set at a pneumatic pressure, controlled with a solenoid valve 9 and discharged continuously from the water cannon 4. Fire fighting is carried out by operating remotely a water cannon swiveling device 5 while watching a site photographed with a television camera 7 on a television screen incorporated into a site control board of the auxiliary machinery 2 disposed in the body of the aerial ladder truck. The supply of water to the hydraulic tanks of the water discharge device is carried out with a feedwater unit of the auxiliary machinery 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

According to the present invention, water is pressurized by a compressor from a plurality of water pressure tanks provided at the tip of a ladder of a fire engine with a ladder, and water is discharged from one water discharge gun at intervals set in advance by a timer. By doing so, it is possible to discharge water higher and more distantly, and it is intended to extinguish fires in middle-rise buildings more effectively.

[0002] Conventionally, a water pump at the tip of a ladder of a fire engine with a ladder was directly supplied with water by a pump to discharge water.
The water discharge height and water discharge distance depend on the height of the ladder and the pump capacity. Further, there is an injection system using high air pressure, but this is intermittent injection.

[0003] This fire extinguishing system uses air pressure but medium pressure, and the fire extinguishing system uses water discharge instead of injection with mixed pressurized air. The water is supplied to the water discharge gun by the air pressure in the air zone in the water pressure tank. The air pressure in the water pressure tank decreases with the water supply. Therefore, by providing a plurality of water pressure tanks, more continuous water discharge is achieved. Referring to the drawings, this fire extinguishing system comprises a water discharge device 1, an auxiliary device 2, and an auxiliary device 3, and the water discharge device 1 is attached to a ladder tip of a fire engine with a ladder. 2 is installed on the body of the fire engine with ladder. The auxiliary device 3 is mounted on a support vehicle. The water discharge device 1
Water gun 4, water gun swivel device 5 (includes swivel drive 37 and elevation drive 38), floodlight 6, TV camera 7, water pressure tank 8 (this time the number is shown as five), solenoid valve 9 (3 times the number of water pressure tanks 8 and 15 pieces),
It comprises a safety valve 10 (five in number equal to the number of water pressure tanks 8), piping 12 incorporating a header pipe 11 (three in number), and a high-pressure water hose 13. The auxiliary equipment 2 includes a water hose reel 14, an air hose reel 15, a cable reel 16, a local control panel 17, a high-pressure water hose 18 connected to the water discharge device 1 and the auxiliary equipment 3, and a high-pressure air hose 1.
9, cable 20, strainer 21, air filter 2
It consists of two. The auxiliary equipment 3 includes a water supply unit 23, a water supply unit on-site control panel 24, a makeup water tank 25, a medium-pressure compressor 26 (determined by the capacity and quantity of the water pressure tank 8 but shown in three quantities), medium On-site control panel 27 for pressure compressor, air tank 28, generator 29,
Piping around equipment 30, cable 31, strainer 32,
The air filter 33 includes a high-pressure water hose 34 and a high-pressure air hose 35 connected to the auxiliary device 2. Auxiliary equipment 2
The connection of the high-pressure water hose 34 and the high-pressure air hose 35 between the power supply and the auxiliary device 3 is performed on site by a connection fitting 36. Water is supplied to the water pressure tank 8 by a water supply unit 23.
Water is supplied to the water supply unit 23 from the makeup water tank 25.

The fire extinguishing operation is performed by remotely operating the water spray gun 4, the water spray gun turning device 5, the floodlight 6, and the television camera 7 in the water discharge device 1 while watching the television screen incorporated in the on-site control panel 17 on the ground. Do.

[Brief description of the drawings]

FIG. 1 is a flow sheet.

FIG. 2 is an assembly view of a water discharge device.

FIG. 3 is a water discharge time chart.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water discharge device 2 Auxiliary device 3 Auxiliary device 4 Water spray gun 5 Water spray gun turning device 6 Floodlight 7 TV camera 8 Water pressure tank 9 Solenoid valve 10 Exhaust valve 11 Header pipe 12 Pipings 13 High pressure hose 14 Water hose reel 15 Air hose Reel 16 Cable reel 17 Field control panel 18 High-pressure water hose 19 Air high-pressure hose 20 Cable 21 Strainer 22 Air filter 23 Water supply unit 24 Field control panel for water supply unit 25 Supply water tank 26 Medium pressure compressor 27 Field control panel for medium pressure compressor 28 Air tank 29 Generator 30 Piping 31 Cable 32 Strainer 33 Air filter 34 High-pressure water hose 35 High-pressure air hose 36 Connection fitting 37 Turning drive 38 Elevation drive

Claims (1)

[Claims] 1. A plurality of water pressure tanks provided at the tip of a ladder of a fire truck with a ladder are supplied to one water discharge gun in an order set by a timer by air pressure pressurized by a compressor. A fire extinguishing system that can discharge water higher and farther than before by discharging water from the nozzle, making it more effective in responding to fires in middle-rise buildings.