Abstract: An experimental platform was built to compare the injec⁃ tion pressure of the jet hydrogel to the conventional injection distance (15, 17m), the inlet pressure of the water gun, the water flow rate and the corresponding parameters of the jet water. The difference between the polymer hydrogel fire extinguishing agent and the water was tested, and whether it would affect the actual operation. Measure the water pressure difference, calculate and compare the corresponding impedance coefficient, and analyze the reasons. The experimental results show that under the same conditions, the relationship between the pump pressure and the required pump pressure of the ejection hydrogel, and the difference between the two kinds of fire extinguishing agents when they are injected, and the resistance coefficient of the two kinds of fire extinguishing agents with the same caliber and material are compared.

Key words: high polymer, hydrogel fire extinguishing agent, resis? tance coefficient, emergency rescue