A nozzle for dispensing a fluid having a barrel having a proximal end and a distal end, the barrel having a passage defined by a first internal surface extending between the distal end and the proximal end, and an orifice defined by a second internal surface at the distal end of the barrel, a stem located at least partially in the barrel, the barrel is movable in relation to the stem to switch between a low pressure mode and a high pressure mode, a shaper located around an outer surface of the distal end of the barrel, the shaper being movable in relation to the barrel to switch between a low pressure fog mode and a low pressure stream mode. The nozzle is configured to dispense the fluid in a straight stream or fog in both the low pressure mode and the ultra-high pressure mode. The orifice is also configured to provide flushing capability for the ultra-high pressure mode while operating in the low pressure mode.

A nozzle for dispensing a fluid having a barrel having a proximal end and a distal end, the barrel having a passage defined by a first internal surface extending between the distal end and the proximal end, and an orifice defined by a second internal surface at the distal end of the barrel, a stem located at least partially in the barrel, the barrel is movable in relation to the stem to switch between a low pressure mode and a high pressure mode, a shaper located around an outer surface of the distal end of the barrel, the shaper being movable in relation to the barrel to switch between a low pressure fog mode and a low pressure stream mode. The nozzle is configured to dispense the fluid in a straight stream or fog in both the low pressure mode and the ultra-high pressure mode. The orifice is also configured to provide flushing capability for the ultra-high pressure mode while operating in the low pressure mode.

Disclosed are a fire extinguishing system and method for an ultra-high voltage (UHV) converter station, and a UHV converter station. The fire extinguishing system includes a spray fire extinguishing system and a fire monitor-based fire extinguishing system, where the spray fire extinguishing system includes a first fire pipe and a spray pipe; the fire monitor-based fire extinguishing system includes a second fire pipe and a fire monitor; one fire monitor is disposed right above a firewall on both sides of each converter transformer in the UHV converter station, and each fire monitor is connected to one second fire pipe; a spray pipe is disposed on the firewall on both sides of each converter transformer; and the fire monitor corresponding to each converter transformer, and an outlet of the spray pipe connected to the first fire pipe corresponding to each converter transformer face the converter transformer.

A helipad fire suppression system includes a helipad having an outer boundary that defines an impervious deck area for at least one of landing or storing one or more helicopters, with at least a portion of the impervious deck area being designated a fire suppression target area. The system includes a nozzle assembly having a spray-type nozzle for spraying a fire suppression fluid in a radial pattern. The nozzle assembly can include a nozzle enclosure for enclosing the spray-type nozzle and can be configured for installation in a surface made of an impervious material. The nozzle assembly is disposed in an interior portion of the impervious deck area so as to provide the fire suppression fluid to the fire suppression target area.

A helipad fire suppression system includes a helipad having an outer boundary that defines an impervious deck area for at least one of landing or storing one or more helicopters, with at least a portion of the impervious deck area being designated a fire suppression target area. The system includes a nozzle assembly having a spray-type nozzle for spraying a fire suppression fluid in a radial pattern. The nozzle assembly can include a nozzle enclosure for enclosing the spray-type nozzle and can be configured for installation in a surface made of an impervious material. The nozzle assembly is disposed in an interior portion of the impervious deck area so as to provide the fire suppression fluid to the fire suppression target area.

A fire extinguisher discharge nozzle is provided and includes sidewalls and a biasing element. The sidewalls define an aperture through which a medium(s) is dischargeable and are adjustable between multiple first and multiple second positions associated with dilated and constricted conditions of the aperture, respectively. The biasing element is configured to bias the sidewalls toward assuming one of the multiple first or multiple second positions. The sidewalls are drivable toward assuming the other one of the multiple first or multiple second positions in opposition to bias applied by the biasing element in accordance with a characteristic of the medium(s).

An extinguishing-agent discharge device includes a casing having a guide channel for an extinguishing agent, a metallic handle, a hose connection, an adjustment means for regulating an extinguishing-agent supply using a manual control unit and a discharge nozzle. A measuring-current transformer generates a current signal proportional to the electric current flowing in the extinguishing agent; an insulator section divides the casing into a discharge area having the discharge nozzle and an inlet area having the manual control unit, the measuring-current transformer disposed in the insulator section; a first electrode disposed in the discharge area in the extinguishing-agent flow and serves for detecting an extinguishing-agent potential; a second electrode disposed at the handle for detecting a ground potential in the inlet area; and a controller for evaluating the current signal for a potential difference occurring between the extinguishing-agent and ground and having a drive element acting on the adjustment means.

A device for shaping a pressurized liquid stream, the device including: (a) a conduit, adapted for intake and transmission of a liquid stream; (b) a shaping piece configured to shape the liquid stream into a liquid shield, the liquid shield resulting from the liquid stream impacting on the shaping piece. In some embodiments, the device further includes: (c) a lateral displacement mechanism adapted to adjust a distance between the conduit and the shaping piece.

A device for shaping a pressurized liquid stream, the device including: (a) a conduit, adapted for intake and transmission of a liquid stream; (b) a shaping piece configured to shape the liquid stream into a liquid shield, the liquid shield resulting from the liquid stream impacting on the shaping piece. In some embodiments, the device further includes: (c) a lateral displacement mechanism adapted to adjust a distance between the conduit and the shaping piece.

One or more systems and/or methods are disclosed for a nozzle with wire connection to a hose, which may allow wired communication between the nozzle and a distant control center. A hose connector with one or more locating pins may be used for easy alignment and quick establishment of electrical connection between the nozzle and the hose. The nozzle may comprise a swiveling joint configured to fully swivel while maintaining electrical connection between the hose connector and an electronic housing. A slip ring assembly may be used in the swiveling joint to maintain the electrical connection.