摘要:
An apparatus and method directed to aspirated-type high-expansion foam generation having a nozzle housing with a reduced diameter to length ratio. The generator having a nozzle manifold configured to receive a foam solution and at least one nozzle assembly. The generator can include a foam generator assembly disposed adjacent the nozzle manifold. The foam generator has a body portion having a first foam generating portion having a tapered configuration and a second foam generating portion having a tapered configuration with a base that is connected to an apex of the first foam generating portion. The foam generating assembly is configured such that the second foam generating portion protrudes into an interior of the first foam generating portion. The generator is configured such that a ratio of a largest inlet dimension of the foam generator assembly to a length of the foam generator assembly is 0.50 or less, and a nozzle housing is disposed on a header of the nozzle manifold such that a ratio of a diameter of an inlet of the respective nozzle to a distance from an inner wall surface of the header to the inlet of the respective nozzle is 0.8 or less.
摘要:
본 발명은 역류방지용 혼합챔버를 구비한 무동력 포소화약제 혼합장치에 관한 것으로서, 더욱 상세하게는 별도의 동력원을 구비하지 않고도 소화약제를 일정 비율로 공급하여 포소화약제를 혼합할 수 있으며, 혼합된 포소화약제가 역류하는 것을 방지할 수 있는 장치에 관한 것이다.
摘要:
A fire suppression nozzle assembly includes a spray-type nozzle for effectively spraying a fire suppression fluid that is a fluorine free foam solution. The spray-type nozzle includes a body portion defining a passage extending longitudinally through the body portion for conveying the fire suppression fluid. The spray-type nozzle also includes a deflector portion coupled to the body portion and configured to spray the fire suppression fluid onto a fire suppression target area using a radial spray pattern.
摘要:
An apparatus for generating a mist and/or foam is provided. The apparatus comprises at least one first fluid supply passage (60a, 60b) having an inlet in fluid communication with a first fluid supply and a first fluid outlet; at least one second fluid supply passage (66) having an inlet in fluid communication with a second fluid supply and a second fluid outlet; and a nozzle (72) in fluid communication with the first and second fluid outlets, the nozzle (72) having a nozzle inlet (74), a nozzle outlet (78), and a nozzle throat (76) intermediate the nozzle inlet (74) and nozzle outlet (78), the nozzle throat (76) having a cross sectional area which is less than that of both the nozzle inlet (74) and nozzle outlet (78); and wherein the second fluid outlet includes a porous member (100) through which the second fluid must flow.
摘要:
Fixed systems and method tor extinguishing large scale industrial tank fires, with and without fixed roofs, and featuring aerated foam projecting nozzles and including fixed center directed nozzles The invention includes two connected nozzles, which project aerated foam of between in substantially focused streams and in roughly opposing directions. The two nozzles have a stream shaper in a tip portion of the nozzle with fins which terminate substantially flush with a nozzle tip solid bore discharge orifice. The two nozzles preferably are attached proximally downstream of and in fluid communication with at least one ambient air aeration chamber structure in combination with the two nozzles to produce aerated foam. A third nozzle of the fixed system is structured to discharge in a direction of within 30° of a perpendicular to the discharge axis defined by the two nozzles discharging in the roughly opposing directions.
摘要:
An apparatus for the generation of a foam-like fire extinguishing flow comprises a lance (1) with a flowing channel (2) of axially symmetric shape, a nozzle (7) located at an end part of the lance (1), a foaming solution introduction means (13), and a mixed liquid and foam stream stabilizer (16). An expansion chamber (18) is provided between the foaming solution introduction means (13) and the mixed stream stabilizer (16). The flowing channel of the nozzle (7) comprises an inlet conical or conoid shaped portion (10) converging in the course of flow of the liquid and an outlet cylindrical portion (11). The apparatus allows a distance of discharging the fire extinguishing flow to be increased owing to a reduction in energy losses for the generation of a high-velocity foam-like flow.
摘要:
A rotary nozzle for compressed air foam (CAF) has a barrel (14) mount ed for rotation about an axis perpendicular to its longitudinal axis. The barrel is mounted to a CAF supply conduit (10) and has a cross-sectional area substantially larger than the cross-sectional area of the conduit. Two non-equal orifices in the barrel (24, 26), located on the opposite sides of the axis of rotation, distribute CAF such that it covers an almost complete, typically a circular area on the ground.
摘要:
A selectively automatic fire fithting nozzle a method of use including adjustable means (ST) of limiting a range of automatic adjustement (B) of a discharge orifice of the nozzle, providing an option of selecting a constant pressure for a first fraction of a discharge window and selecting a relatively constant flow for a second fraction.