Application of Dry Hydrant System in Open Garage in Cold Area

Fire control of open garage in cold areas of north China is a relatively difficult problem to solve. When adopting wet fire protection system, the pipeline anti freezing measures should be taken to meet the needs of normal use in winter. The usual insulation method could not avoid the pipeline freezing. The use of electric heat tracing increased the daily operation cost, and the actual application effect was difficult to guarantee. The application of dry hydrant system was a more suitable choice. The dry hydrant system was a hydrant system that did not fill water in the pipe network at ordinary times and filled water into the cross mains in case of fire. Compared with the wet system, there were many differences in the design process. Through the analysis and summary of system composition, selection of quick opening and closing devices, control of pipe network water filling time, principle of pipe network layout, selection of quick exhaust valve and system control, a set of complete implementation process was provided for reference in engineering applications.