在泡沫灭火系统中,混合比准确与否,直接影响到系统工况。从泡沫液性能因素考虑,虽然混合比在低于下限或超过上限时都可以使用,但低于下限时产生的泡沫直径变大,泡沫稳定性差,成泡率低,而超过上限时,虽然泡沫稳定性变好,但泡沫直径变小,黏度增大,泡沫液消耗量增高。上述两种情况 In the foam fire extinguishing system, the mixing ratio is accurate or not, directly affect the system conditions. Although the mixing ratio can be used below the lower limit or above the upper limit from the viewpoint of the foam liquid performance factor, the foam diameter below the lower limit becomes large, the foam stability is poor, and the foaming rate is low. When the upper limit is exceeded, the foam Stability becomes better, but the bubble diameter becomes smaller, viscosity increases, foam liquid consumption increased. The above two cases