Study on Transportation Characteristics of Compressed Air Foam Pipe Network

Abstract

The method of the full-size experiment is used to study the conveying characteristics of the compressed air foam in the pipe. This paper proposes a method of calculation of foam flow rate, foam pipe resistance loss, and the like. The longer the pipeline is, the more stable the foam, the longer the 25% drainage time of the foam. The response time of the compressed air foam system was obtained by analysis of the experimental results. It is found that the conveying speed of the compressed air foam is faster, but the tube network and the foam cannon have a longer time for the rated working pressure. The longer the pipeline, the longer the time of the rated working pressure. The foam flow rate range of compressed air foam is obtained by experimentally, the pressure loss along the way, and local pressure loss. According to the experimental results and combined with the actual situation of the typical ultra-high voltage converter station, an optimized design of the compressed air foam pipe network configuration is proposed.