The glass ball sprinkler is the key thermal sensitive element in the automatic sprinkler system. The glass ball is filled with organic solutions with different expansion coefficients. After thermal expansion at different temperatures, the glass ball is broken, and the water flow in the pipeline is sprayed to the splash trays of different designs, up, down or to the side, so as to achieve the purpose of automatic sprinkler. It is applicable to automatic sprinkler system pipe networks in factories, hospitals, schools, machine shopping malls, hotels, restaurants, entertainment places and basements with ambient temperature of 4 ° C ~ 70 ° C.
Glass ball sprinkler
1. The glass ball sprinkler is the key thermal sensitive element in the automatic sprinkler system. The glass ball is filled with organic solutions with different expansion coefficients. After thermal expansion at different temperatures, the glass ball is broken, and the water flow in the pipeline is sprayed to the splash trays of different designs, up, down or to the side, so as to achieve the purpose of automatic sprinkler. It is applicable to automatic sprinkler system pipe networks in factories, hospitals, schools, machine shopping malls, hotels, restaurants, entertainment places and basements with ambient temperature of 4 ° C ~ 70 ° C.
2. Working principle: the glass ball of the glass ball sprinkler is filled with organic solution with high coefficient of thermal expansion. At room temperature, the shell of the ball can bear a certain supporting force to ensure the sealing performance of the sprinkler. In case of fire, the organic solution expands with the increase of temperature until the glass body is broken and the ball seat and seal are washed off by water after losing support, so as to start sprinkling fire extinguishing.
3. Structural features: the closed glass ball sprinkler is composed of sprinkler head, fire glass ball, splash pan, ball seat, seal and set screw. After passing the full inspection and sampling inspection items such as 3Mpa sealing test, the set screw is solidified with adhesive and supplied to the market. It is not allowed to be disassembled or changed after installation.
Rapid response early fire extinguishing nozzle
The sensitivity of thermal sensitive elements in automatic sprinkler system is a kind of rapid response. In the early stage of fire, only a few sprinklers need to be started, so there can be enough water to quickly act on the sprinklers to extinguish the fire or inhibit the spread of fire. It has the characteristics of fast thermal response time and large spray flow, It is mainly used for the thermal sensing elements of automatic sprinkler systems such as elevated warehouses and warehouses of logistics companies.
Structure principle: the early suppression rapid response (ESFR) nozzle is mainly composed of nozzle body, ball seat, elastic gasket, support, positioning plate, sealing gasket, splash pan, fire glass ball and adjusting screw. At ordinary times, the fire glass ball is fixed on the nozzle body by oblique fulcrum such as support, positioning plate and adjusting screw, and subjected to hydrostatic sealing test of 1.2MPa ~ 3Mpa. After a fire, the fire glass ball will respond quickly and release under the action of heat, the ball seat and support will fall off, and large flow of water will be sprayed into the protection area, so as to extinguish the fire and restrain the fire.
Concealed sprinkler
The product is composed of a glass ball nozzle (1), a screw sleeve seat (2), an outer cover seat (3) and an outer cover (4). The nozzle and screw socket are installed on the pipeline of the pipe network together, and then the cover is installed. The outer cover base and the outer cover are welded into a whole by fusible alloy. In case of fire, when the ambient temperature rises and reaches the melting point of fusible alloy, the outer cover will fall off automatically. With the continuous increase of temperature, the nozzle glass ball in the cover will be broken due to the expansion of temperature sensitive liquid, so as to start the nozzle to spray water automatically.
Fusible alloy fire sprinkler
This product is a closed sprinkler opened by the heating and melting of fusible alloy elements. Like the glass ball closed sprinkler, it is widely used as the thermal sensing element of light and medium risk automatic sprinkler systems such as hotels, commercial buildings, restaurants, warehouses and underground garages.
Performance parameters: nominal diameter: dn15mm connecting thread: R “rated working pressure: 1.2MPa sealing test pressure: 3.0MPa flow characteristic coefficient: k = 80 ± 4 nominal operating temperature: 74 ℃± 3.2 ℃ product standard: gb5135.1-2003 installation type: y-zstx15-74 ℃ splash pan downward
Main structure and working principle: This product is composed of nozzle body frame, sealing seat, sealing gasket, positioning plate, molten gold seat, molten gold sleeve and support, hook plate and fusible alloy. The fusible alloy between molten gold and sleeve melts due to the increase of temperature in case of fire, which reduces the height between molten gold and sleeve, and the positioning plate loses support The hook plate falls off without fulcrum, the support tilts, and the water rushes out of the sealing seat to start sprinkling fire extinguishing. Under a certain water flow, the water flow indicator starts the fire pump or alarm valve to start water supply, and continues to spray from the opened nozzle, so as to achieve the purpose of automatic sprinkling fire extinguishing.
Post time: Nov-01-2021