Something about fire sprinkler

Fire sprinkler
1.Sprinkler for extinguishing fire according to fire signal
Fire sprinkler: a sprinkler that starts automatically according to the predetermined temperature range under the action of heat, or starts by the control equipment according to the fire signal, and sprinkles water according to the designed sprinkler shape and flow to extinguish the fire. It is part of the spray system.
1.1 Classification by structure
1.1.1 Closed sprinkler head
Sprinkler head with release mechanism.
1.1.2 Open sprinkler head
Sprinkler head without release mechanism.
1.2 Classification by thermal sensitive element
1.2.1 Glass bulb sprinkler
The thermal sensing element in the release mechanism is a glass bulb sprinkler. When the nozzle is heated, the working fluid in the glass bulb acts, causing the bulb to burst and open.
1.2.2 Fusible element sprinkler
The thermal sensing element in the release mechanism is a sprinkler head of a fusible element. When the nozzle is heated, it is opened due to the melting and falling off of fusible elements.
1.3 Classification according to installation mode and spraying shape
1.3.1 Vertical sprinkler head
The sprinkler head is vertically installed on the water supply branch pipe, and the sprinkling shape is parabolic. It sprays 60%~80% of the water down, while some of it sprays to the ceiling.
1.3.2 Pendant sprinkler
The sprinkler is installed on the branch water supply pipe in a parabolic shape, which sprays more than 80% of the water down.
1.3.3 Ordinary sprinkler head
The sprinkler head can be installed vertically or vertically. The sprinkling shape is spherical. It sprays 40%~60% of the water down, while some of it sprays to the ceiling.
1.3.4 Side wall sprinkler
The sprinkler head is installed against the wall in horizontal and vertical forms. The sprinkler is a semi parabolic shape, which directly sprinkles water to the protection area.
1.3.5 Ceiling sprinkler
The sprinkler head is concealed on the water supply branch pipe in the ceiling, which is divided into flush type, semi concealed type and concealed type. The sprinkling shape of the sprinkler is parabolic.
1.4 Special type sprinkler head
1.4.1 Dry sprinkler
Sprinkler with a section of water free special auxiliary pipe fittings.
1.4.2 Automatic opening and closing sprinkler
Sprinkler head with automatic opening and closing performance at preset temperature.