Water mist curtain spray head

Abstract

The invention belongs to the field of smoke preventing and dust falling in fire fighting, and particularly relates to a water mist curtain spray head. The water mist curtain spray head comprises a first nozzle which is downwards arranged in the spray direction; a transition part is arranged between the first nozzle and an outer water pipe and is used for communicating the first nozzle with the outer water pipe. The water mist curtain spray head further comprises at least one second nozzle which is used for horizontally spraying to the left and / or the right; and the second nozzle is arranged by communicating with the outer water pipe through the transition part. By adopting the water mist curtain spray head, the problem that conventional structure brings a dead angle in spray can be effectively solved, and another problem that conventional single-nozzle structure causes fast sinking of the upper mist layer to influence personal safety can be avoided; and the water mist curtain spray head is high in safety, and reliable and stable in work.

Description

technical field [0001] The invention belongs to the field of fire prevention, smoke prevention and dust reduction, and in particular relates to a fine water mist curtain nozzle. Background technique [0002] The water mist curtain nozzle is the main component of the water mist curtain system; the water mist curtain system is composed of the water mist curtain nozzle, water supply and distribution pipes, control valve, water flow alarm device and rain alarm valve group or sensor The automatic water mist fire extinguishing system composed of temperature deluge valve and other functions mainly plays the role of fire arresting, cooling and isolation. It is mainly used in various fire protection areas or equipment in buildings and public places to protect or Purpose of fire partition. The fine water mist curtain nozzle sprays water into a mist curtain shape, and its function is to cool fireproof partitions such as fireproof shutters or fireproof curtains, etc., to improve their ...

AI Technical Summary

Problems solved by technology

Most of the current fine water mist curtain nozzles are realized by arranging multiple single nozzles side by side at a certain interval on a water pipe. The single nozzle arrangement of the water mist curtain nozzle arranged on a single water pipe has low kinetic energy of the water mist, and the thickness of the mist curtain is obviously insufficient, which is difficult to meet the actual needs. In the event of a fire, the mist curtain is blown away due to the excessive wind in the channel, which affects its fire protection ability; secondly, the traditional single nozzle has a small fog pattern, which requires that the nozzles of each fine water mist curtain should be arranged closely, and the distance is generally less than 500mm , which leads to the need to arrange more nozzles on one pipeline, and the investment and maintenance costs are high; thirdly, in order to facilitate the formation of fog curtains, the traditional single nozzles are all set up in the direction of spraying downwards, and because the water mist sprayed by a single nozzle is Fog cone type, the bottom of the fog cone spray can naturally cross each other and form a fog curtain-like fog curtain wall, however, there must be a gap above it, which is often said to be the "dead angle" of the spray. For details, please refer to figure 1 As shown, when a fire actually breaks out, the smoke spreads first on the top of the building. In this way, the spray dead angle a of the traditional water mist curtain system just cannot play the role of hindering the smoke on the top of the building; in addition , the design of the nozzle with the nozzle facing down, the momentum of the water mist is from top to bottom, which often accelerates the decline of the upper layer of smoke, which is not conducive to escape, thus causing hidden dangers in use

The various defects of the above-mentioned traditional fine water mist curtain nozzles have brought great troubles to those skilled in the art.

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