Working principle of the foam generator in storage tanks
Thread Content
Storage tanks are generally equipped with foam generators for fire suppression. According to the explanations of their working principle, when foam enters the foam generator in the tank, a negative pressure is created around it, which draws in the surrounding air and mixes it with the foam. Does anyone know how this negative pressure is generated? If anyone knows, please explain it. Thank you
The foam generator in the storage tank operates on the principle of injection. When the foam solution passes through the nozzle inside the generator under certain pressure, it forms a high-speed jet flow. In such a process of rapidly flowing liquid, according to Bernoulli’s principle, a region of lower pressure, that is, negative pressure, is formed around it. This negative pressure area draws in the surrounding air into the foam liquid flow; once the air mixes with the foam liquid, it is transformed by the generator into stable fire-fighting foam, thereby achieving the purpose of extinguishing fires. It has a simple structure, can generate a large amount of foam rapidly, and effectively control or extinguish fires. .