대학원

DURABILITY AND PRESSURE RESISTANCE TEST OF A SPRINKLER GLASS BULB HEAD

Keywords: Heat detector, External impact, Water pressure, Deliberate damage, High temperature

The relevance of the study on the strength and pressure resistance of a glass sprinkler bulb lies in the need to ensure 

the safety and efficiency of fire extinguishing systems, as this allows one to assess the reliability and durability of the bulb 

under high internal pressure and take appropriate measures to prevent any possible accidents and damage. The purpose 

of this article is to conduct a study aimed at evaluating the strength and pressure resistance of a glass sprinkler bulb in order to determine its reliability and effectiveness in a fire extinguishing system. To achieve the goal of the study, a methodology was used that included performing a series of tests to study the response of a glass sprinkler bulb to various levels of pressure in order to verify its strength and stability. The result of the experiment is as follows: First, the glass bulb itself was confirmed to demonstrate a high level of strength against static external force, and breaking the glass bulb due to external impacts on the head was proven to be impossible under a general dynamic impact situation. Second, the glass bulb was confirmed to be easily damaged when a dynamic impact was applied only to the bulb. This means that after removing the glass bulb protection cover on-site, the bulb can be damaged even with a slight impact. Third, the water pressure test with the glass bulb damage demonstrated that when the bulb is damaged more than 10% of its thickness, it becomes damaged within the 1863 – 1960 kPa range. This implies that the head may be damaged over time if even light damage and a low pipe water pressure are applied to the head.