LIYi,YANGBing-jie,WANGJian-qiang,et al.Development of Extra Large Orifice（ELO）Closed Sprinkler and Its Performance Test[J].China Water & Wastewater,2022,38(21):120-123.
Development of Extra Large Orifice（ELO）Closed Sprinkler and Its Performance Test
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第21期
Page:
120-123
Column:
Date of publication:
2022-11-01
- Keywords:
- extra large orifice（ELO）sprinkler; flow characteristic coefficient; sealing performance; sprinkler distribution performance; water droplet impulse
- Abstract:
- When the traditional spray sprinkler is used in high clearance space, there are some defects such as small flow characteristic coefficient and water droplets hard to penetrate the rising fire plume flow field. Through the analysis and performance testing of the key indexes of sprinkler, the first extra large orifice (ELO) closed sprinkler with flow coefficient K over 400 was developed, and performance testing such as flow characteristic coefficient, sealing performance, sprinkler distribution performance and water droplet impulse was carried out. The main indicators of sprinkler met the requirements specified in Automatic Sprinkler System (GB 5135) series standards. The working pressure had a great influence on the uniformity of sprinkler intensity, while the height of sprinkler had a great influence on the water droplet impulse.
Last Update:
2022-11-01