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Gas-bottle-type automatic superfine-dry-powder fire-extinguishing system for vehicle

An automatic fire-extinguishing system and ultra-fine dry powder technology, applied in fire rescue and other directions, can solve the problems of delayed fire-extinguishing timing, misoperation of fire-extinguishing device startup, and reliance on automatic startup methods.

Inactive Publication Date: 2015-03-04
TIANGUANG FIRE FIGHTING TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the method of hot aerosol fire extinguishing has the following problems: using hot aerosol to extinguish the fire, the temperature of the gas after the explosion used to release the ultrafine dry powder can reach more than 800 ° C, which is easy to cause secondary losses to the substances in the protection zone
However, thermal wires are now used as the starting element of the aerosol fire extinguishing device. Due to the large temperature error that causes the thermal wire to react, it is generally tens of degrees, and the most precise one also has more than ten degrees. The accuracy is lower
As a result, the start of the fire extinguishing device will eventually cause malfunction, and the problems described in the third natural paragraph in the background technology section will appear.
[0009] And, in the existing automatic fire extinguishing device for vehicle, those who do not adopt the manual start-up device completely depend on the automatic start-up mode.
Once the automatic activation method fails, the fire extinguishing system will not be available, thus delaying the fire extinguishing time

Method used

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  • Gas-bottle-type automatic superfine-dry-powder fire-extinguishing system for vehicle
  • Gas-bottle-type automatic superfine-dry-powder fire-extinguishing system for vehicle
  • Gas-bottle-type automatic superfine-dry-powder fire-extinguishing system for vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] An automatic ultra-fine dry powder fire extinguishing system for a gas cylinder type vehicle, including a fire extinguishing device and a starting device, characterized in that the top of the fire extinguishing device is provided with an inflating valve that opens to the fire extinguishing device in one direction, and the charging valve and the starting device are three connect.

[0042] For the structure of the fire extinguishing device, please refer to figure 2 , the tee is omitted in this figure, and a protective cap is used to cover the inflation valve.

[0043] The fire extinguishing device includes a high-pressure gas storage chamber 612 and a fire extinguishing agent storage chamber 614. The bottom of the fire extinguishing agent storage chamber is conical. The high-pressure gas storage chamber communicates with the fire extinguishing agent storage chamber through an air outlet 610. A piston 68 is arranged in the high-pressure gas storage chamber. The high-pres...

Embodiment 2

[0072] Such as Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that the powder discharge baffle directly abuts against the shaft shoulder of the piston rod. In this solution, when the injection device is closed, the piston does not touch the annular inner flange, because there is no annular inner flange in the high-pressure gas storage chamber, and the difference in the force between the two surfaces of the piston finally completely passes through the piston rod. , shaft shoulder and powder outlet baffle act on the fire extinguishing agent storage chamber. The advantage of adopting this scheme is that, since the force applied by the powder discharge baffle to the fire extinguishing agent storage chamber is the difference between the air pressure forces on the two surfaces of the piston, the force during sealing is large and the sealing effect is good.

Embodiment 3

[0074] Such as Figure 8 As shown, the difference between this embodiment and Embodiment 1 is that the piston rod is covered with a size adjustment sleeve 617, which replaces the helical compression spring in Embodiment 1, and the size adjustment sleeve is located on the shaft shoulder and the powder outlet of the piston rod. between the baffles. The possible over-positioning problems between the piston and the annular inner flange, as well as the powder outlet baffle and the fire extinguishing agent storage chamber are compensated by replacing the size adjustment sleeves of different lengths.

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Abstract

The invention relates to a gas-bottle-type automatic superfine-dry-powder fire-extinguishing system for a vehicle. The system comprises a fire extinguisher device and an actuating device and is characterized in that a charge valve opened toward the fire extinguisher device in a unitary direction is arranged at the top of the fire extinguisher device, and the charge valve is connected with a tee junction in the actuating device. The gas-bottle-type automatic superfine-dry-powder fire-extinguishing system for the vehicle has the advantages that a piston is driven to move by a pressure difference between a first cavity and a second cavity, such that the action of opening an air outlet and the action of opening a nozzle are combined into one action, thereby increasing the action reliability and the sealability when the action is not performed.

Description

technical field [0001] This patent belongs to the technical field of fire extinguishing devices in road vehicles, belongs to the A62C3 / 07 group of IPC classification number, and particularly relates to a superfine dry powder automatic fire extinguishing system for a gas storage cylinder type vehicle. Background technique [0002] Ultrafine dry powder fire extinguishing is a fire extinguishing method that has emerged in recent years. The principle is that the volatile decomposition products of inorganic salts in the dry powder chemically inhibit and interact with the free radicals or active groups produced during the combustion process. The negative catalytic effect interrupts the chain reaction of combustion and extinguishes the fire. In addition, there is a partial dilution of oxygen and cooling. The gas in the aerosol enters the protected area, which increases the total amount of gas in the protected area and reduces the proportion of oxygen in the protected area. When th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62C3/07A62C37/00A62C37/38
Inventor 谢炳先陈秀玉
Owner TIANGUANG FIRE FIGHTING TIANJIN