JET Characteristics Study Of A Liquamatic Fire Water Monitor With Self-Swinging Device

With the continuous development of social economy, the fire water monitor plays an important role in the fire fighting, which is a fast effective fighting tool to put out the fire and prevent fire spreading. When it is difficult for fireman to get close to the fire or stay for a long time, a liquamatic fire water monitor that using pressure water to propel self-swinging device can be used for unmanned locations and it can provide better protection for firefighters. At present, traditional design experience, high cost and long cycles design limits the development of the liquamatic fire water monitor to a great extent. The designed fire water monitor can not meet fire fighting needs. So, it is important to design a novel liquamatic fire water monitor and investigate the jet characteristics of it to improve the design level.The main contents of each chapter are summarized as follows:In chapter 1, the research status and significance of the fire water monitor are introduced, and classification and characteristics of fire water monitor also are introduced. The key technique and trends of portable type fire water monitor at home and abroad are also described. Consequently, the research goal and challenges of the project are also brought.In chapter 2, liquamatic fire water monitor with self-swinging device is designed based on analysis of self-swinging fire water monitor in domestic and international scale, including the self-swinging device, operation device, and so on.In chapter 3, interior flow channel model of the liquamatic fire water monitor model was fabricated using Pro/E software, and the internal flow of different structural parameters are simulated using Fluent software. The results indicate that different structural parameters affect on its jet characteristic, the optimal structure parameters of flow channel are obtained, and the influence factors of recoil was analyzed.In chapter 4, nozzle with the function of direct jet and spray jet was designed, and the structural model of the nozzle was also established. The different opening and inner diameter of nozzle was simulated using Fluent software. Finally the optimal parameters of the nozzle are obtained.In chapter 5, jet experiment of liquamatic fire water monitor with self-swinging device indicates that it meet the jet requirements. The accuracy of the simulation result is verified by the contrast experiments.In chapter 6, conclusions are given and some new views are put forward in the future.