Test device for measuring spray characteristic of local application nozzle of carbon dioxide fire-extinguishing system

Abstract

The invention relates to a test device for measuring the spray characteristic of a local application nozzle of a carbon dioxide fire-extinguishing system. The test device comprises a hoisting weighing device, a driving gas cylinder group, a nozzle test interface, an adjustable oil tray, a video monitoring system, a data acquisition processing system and the like, wherein the hoisting weighing device is formed by combining an electric hoist and an electronic weighing platform scale effectively to measure and record the chemical weight of a carbon dioxide fire-extinguishing agent bottle group automatically; the installation height of the nozzle can be adjusted within the height range from 0.3 to 4 meters by an adjustable rack lifting frame, so the requirement of test height of an overhead type local application nozzle and a trough rim type local application nozzle which are specified by the standard is met; and the area of the oil tray can be adjusted within the range from 0.5 to 1 m<2>by the adjustable oil tray. The test device is convenient to operate, high in automaticity and high in measuring speed, improves work efficiency, reduces test cost and saves test space.

Description

technical field [0001] The invention relates to a fire-fighting equipment test device, in particular to a test device for measuring the injection characteristics of a carbon dioxide fire extinguishing system locally applied nozzle. Background technique [0002] According to the actual needs of fire protection system engineering applications, nozzles for carbon dioxide fire extinguishing systems are divided into total submersion application nozzles and partial application nozzles. Total flooding application nozzle is to ensure that the carbon dioxide fire extinguishing agent is sprayed into the total flooding protection space within the specified time, and can make the carbon dioxide fire extinguishing agent produce good atomization performance when spraying out, so that the entire space can quickly reach the fire extinguishing concentration and achieve fire extinguishing. Purpose. The local application nozzle is aimed at a specific protected object, and the carbon d...

AI Technical Summary

Problems solved by technology

[0004] When using the current domestic test device for testing, first weigh the carbon dioxide fire extinguishing agent bottle group one by one, then connect the bottle group with the header, install the nozzle according to the nozzle installation height and angle announced by the manufacturer, and place it under the nozzle Specific size oil pan, the area of ​​the oil pan is the protection area of ​​the nozzle at this height announced by the manufacturer, and then spray, after the spray is completed, measure whether the area of ​​the oil pan meets the requirements of the national standard according to the spray diameter, if not, the oil pan needs to be Replace or remake, and finally weigh the carbon dioxide bottle groups one by one, it is difficult to complete the collection of all test data in one test

The existing test devices in China mainly have the following problems: 1. The spray characteristic test specified in the standards for the partial application of overhead nozzles and grooved nozzles in the carbon dioxide fire extinguishing system cannot be completed on one test device, and the tube needs to be replaced for each test. road, pipe fittings and oil pan, etc., with heavy workload, low work efficiency and high test cost; 2. The weighing of the agent weight of the carbon dioxide bottle group is cumbersome, time-consuming and laborious; 3. The injection flow rate of the local application nozzle is uncontrollable; 4. The installation height of the application nozzle cannot be adjusted; 5. The protection area of ​​the partial application nozzle cannot be adjusted

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