Isuzu powder nitrogen fire truck, also named as isuzu powder nitrogen fire fighting truck, isuzu liquid nitrogen fire engine. It is described in this utility model falls under the category of fire protection and suppression technology. Isuzu powder nitrogen fire truck consists of a vehicle body, a liquid nitrogen tank, a pressure mechanism, a metallic hose, and a spray gun. The liquid nitrogen tank is connected to the pressure mechanism, which in turn is connected to a control valve via a pipeline for charging nitrogen into the valve.
The pressure mechanism is equipped with a pressure monitoring device and a safety air evacuation valve for both the pressure gas tank and the liquid nitrogen tank, allowing gas to be charged into the valve. Additionally, the pressure mechanism can function as a low-temperature pressure pump. This fire engine is capable of significantly lowering temperatures over a wide range and rapidly expanding the volatiles in the liquid nitrogen, thereby achieving rapid fire suppression.
The liquid nitrogen fire fighting truck proposed in this utility model belongs to fire extinguishing technology, which utilizes liquid nitrogen as the extinguishing agent. Unlike traditional fire fighting trucks that use water, foam, CO2, or dry powder, the liquid nitrogen fire fighting truck is able to cool down fires on a large scale and to a great depth in a short amount of time.
The liquid nitrogen fire fighting truck consists of a car body, liquid nitrogen container, pressing mechanism, and a metal hose with a spray gun. The liquid nitrogen container is connected to the pressing mechanism through a pipeline with a control valve, and the container is equipped with a pressure monitoring gauge, a safety exhaust valve, and a charging valve for the liquid nitrogen. The pressing mechanism can be a pressurized gas cylinder or a cryogenic pump, and it is connected to the liquid nitrogen container by a control valve.
The liquid nitrogen container is specially designed with vacuum insulation technology to maintain a low evaporation rate and filled with high-purity liquid nitrogen. The pressurized gas cylinder contains high-purity nitrogen or other inert gases to reach the desired pressure. During operation, compressed gas is used to extrude liquid nitrogen through a spray gun to quickly extinguish fires.
This innovative design allows liquid nitrogen to rapidly cool down and smother fires by isolating them from oxygen. It effectively reduces the temperature of flammable materials, such as oil products, to below freezing point, causing rapid volatilization and expansion of the liquid nitrogen to suffocate the flames. Moreover, the use of nitrogen in the process does not pollute the surrounding air, making it an environmentally friendly fire fighting solution.
|
Performance |
Unit |
Parameter |
|
Chassis model |
/ |
Isuzu |
|
Maximum travel speed |
km/h |
90 |
|
Specific Power |
kW/t |
≥11 |
|
Flow range |
m3/h |
200-900 |
|
Purity range |
% |
90-99 |
|
Ammonia pressure |
Mpa |
1.2,Up to 15 |
|
Nitrogen preparation time |
min |
≤5 |
|
Dry powder tank capacity |
kg |
3000 |
|
Nitrogen cylinder capacity |
L |
720 |
|
Dry powder gun injection rate |
kg/s |
≥40 |
|
Dry powder cannon range |
m |
≥40 |
|
Dry powder gun spray rate |
kg/s |
≥2 |
|
Three-phase jet |
/ |
Water≥13L/s,Dry powder≥1kg/s |
|
Extinguishing distance of movable nitrogen supply |
m |
≥150 |
|
Lifting lamp power |
W |
240 |
|
Lifting height |
m |
≥7 |
