【 Weak current College 】 extinguisher wall thickness, injection time and remaining rate

Fire extinguisher is fighting the main tool in the early days of fire. It is lightweight and flexible, portable, simple operation.
In addition to the high quality of fire extinguishers, fire extinguishers appearance perfection of internal quality-that is, security performance and the use of performance is the key, this article briefly describes as follows:
First, the wall thickness of the extinguisher
Open the valve, fire-extinguishing spray out and up to a certain range, requires the extinguisher is filled with enough pressure-driven gas (except carbon dioxide their evaporation pressure, a fire extinguisher is compressed nitrogen). Therefore, a fire extinguisher cylinders must be in strict accordance with the requirements of the pressure vessel design, production, testing of fire extinguishers. previous explosion incident since this point is ignored. To ensure the safety, General safety performance through measurement of wall thickness, barrel blast, blast opening position, shape, the cylinder into the water, the residual deformation rate and other parameters to be evaluated. And barrel minimum wall thickness is its security performance the most fundamental and most important the value of the parameter.
In accordance with the principle of pressure vessel design, fire extinguisher cylinders are thin-walled containers, its minimum wall thickness calculation is based on the 60 ° c with a maximum working pressure, selection of material strength, fire extinguishers diameter, weld quality and other factors to determine that also need to consider the long-term effects tube corrosion agent for additional corrosion thickness tolerance f; raw materials; production of deviation resulting thickness of thinning, etc, then you can determine the material's thickness.
2. fire extinguishers injection time
Fire-extinguishing fire was successful, in addition to fire older, operations personnel trained factors, the intensity of the spray extinguishing agents (generally for spraying extinguishing agent per second of weight) can also be decided to fire the key to success. Because the larger the Jet strength, moments of fire extinguishing agent, the more you play, the higher the efficiency of fire extinguishing, fire extinguishing more rapidly. But the injection time too short, fire-fighting operations. Therefore, the national standard provides specifications for each type of fire extinguishers in the shortest possible time to Jet. And fire extinguishers have a design-time usually quite allowance, and so on fire extinguishers injection system components are designed in the production process guarantee consistent precision machining in order to ensure a consistent spray time fire extinguishers and consistent with the restrictions in respect of the use of performance requirements.
3. spray the remaining rate
In fire extinguishers are marked its decal fire level. The use of performance parameters is based on the fire extinguisher filling rated fire extinguishing agent f after repeated fire testing. Therefore, the fire extinguisher most fire extinguishing agent is spraying out. Can play its fire extinguishing efficiency meet the national standards for fire suppression level this use of performance requirements. This must allow the extinguisher fire extinguishing agent in all of the moment, the tube will still be able to maintain a certain pressure. Therefore our scientific and technological personnel and reasonably analysis of various physical characteristics, fire extinguishing agent is spraying on process flow and pressure of work according to the design of fire extinguishers and spray system parts design parameters calculated the. precise types of fire extinguishers in each kind of specification driven gas volume and the volume ratio, fire extinguishing agent and give full play to the Max with a fire extinguisher use performance. Make a fire extinguisher its Jet remaining rate significantly lower than the value of international regulations.
Of course high quality fire-fighting products, also includes its shock resistance, corrosion resistance, high and low temperature performance, pressure gauge performance requirements.