Flow characteristic testing device of nozzle of gas fire-extinguishing system

Abstract

The invention relates to a flow characteristic testing device of a nozzle of a gas fire-extinguishing system. The flow characteristic testing device comprises three parts of a weighing device, a pressure measuring device and a data acquisition device. The flow characteristic testing device is characterized in that the weighing device mainly comprises a weighing bench, a balancing bench, a base, alever and a load sensor; the weighing device is designed through a lever principle method; and the weighing device is designed into a lever with unequal arms. Therefore, an extinguishant storing steel cylinder with large mass can be balanced with a weight with small mass; processes are convenient; measured values are visible; operation is convenient; errors are relatively small; and flow characteristic calculation of a nozzle of a gas fire-extinguishing system is realized according to gas extinguishant mass parameters obtained through mass measurement of a gas extinguishant storing steel cylinder in a spraying process. The flow characteristic testing device is suitable for flow characteristic tests of nozzles of a single-phase gaseous fluidized gas fire-extinguishing system and a gas-liquid two-phase fluidized gas fire-extinguishing system.

Description

technical field [0001] The invention relates to fire-fighting product inspection equipment, in particular to a gas fire extinguishing system nozzle flow characteristic test device, the device uses the lever principle method, through the quality measurement of the gas fire extinguishing agent cylinder during the spraying process, using the obtained gas fire extinguishing agent quality parameters to realize Calculation of flow characteristics of nozzles for gas fire extinguishing systems. Background technique [0002] Gas fire extinguishing system is one of the four traditional fire extinguishing systems. At present, high-pressure carbon dioxide fire extinguishing system, heptafluoropropane fire extinguishing system, trifluoromethane fire extinguishing system, IG541 fire extinguishing system, IG100 fire extinguishing system, IG01 fire extinguishing system and IG55 fire extinguishing system are widely used. The gas fire extinguishing system is mainly composed of a fire extingui...

AI Technical Summary

Problems solved by technology

The quality data and pressure data are transmitted to the computer, and the computer calculates the characteristic value of the nozzle flow rate through the relevant program. Since the device measures the gas fire extinguishing agent cylinder in the air, affected by the reaction force when the valve of the cylinder group is opened, the cylinder group will be sprayed during the spraying process. The formation of dynamic instability will have a certain impact on the accuracy of measurement data

Images