A kind of two-phase flow fire extinguishing sprayer
The utility model relates to a kind of fire extinguishing sprayer, is specifically related to a kind of two-phase flow fire extinguishing sprayer for fire-fighting system.
At present, for fire-fighting system conventional have three kinds of shower nozzles, the first is ability of swimming shower nozzle; The second is gas tip; The third is gas mixing type water shower nozzle.Although the application of the first ability of swimming shower nozzle is very wide, and structure is also very simple, but after one section of breaking out of fire, water can affect to environment, and range of application is also more limited, the second gas tip is many a kind of products of applying at present, its feature is to be widely used in office building, in fire extinguishing or fire prevention system that market etc. are relatively sealed, and structure is also very simple, effect might as well, but effect is not just too desirable for the fire extinguishing system of some Code in Hazardous Special Locations, and should also know one section not thorough because putting out a fire for the first time, spot fire is even more serious, the third gas mixing type water shower nozzle, it is the mode of having utilized the pressure differential of water and nitrogen, water and nitrogen mixing jetting are out put out a fire, and fire extinguishing better effects if, also be a kind of novel fire-fighting mode in all fire extinguishing systems on the market, but more existing so hybrid shower nozzles, although adopted a kind of like this mode, go design, but fire extinguishing effect is general, and real during for some soft large fire, can not guarantee fire to extinguish completely, structure is also very complicated simultaneously, safeguard also inconvenience, and price is also very high.
Summary of the invention
The purpose of this utility model, overcomes the deficiencies in the prior art exactly, provide a kind of can be easy to maintenance, good extinguishing effect and the safe and reliable two-phase flow fire extinguishing sprayer for fire extinguishing system.
In order to achieve the above object, the utility model provides a kind of two-phase flow fire extinguishing sprayer, comprise pipe box and nozzle, described pipe box foot is provided with nozzle, the water inlet pipe and the outer top position of pipe box that in described pipe box, are provided with hollow are provided with air inlet pipe, described water inlet pipe and air inlet pipe bottom are separately installed with water fittings and aqueous vapor ring flange, and described aqueous vapor ring flange below is connected with water nozzle holder, and described water nozzle holder lower surface is provided with and on screw thread and screw thread, is screwed with holder nut.
For the convenient fire extinguishing sprayer of installing, described pipe box is provided with screw holder outward, and described screw holder is provided with on screw thread and screw thread and is screwed with locking nut.
In order conveniently to control water and nitrogen, mix, in the middle of described water nozzle holder, be the water hole of a hollow, and be evenly provided with a plurality of air passing holes around water hole.
In order to make the air-tightness between pipe box and water inlet pipe better, described water inlet pipe and pipe box top position are provided with bonding pad.
For the better atomization of nitrogen that air inlet pipe is entered, described water fittings bottom is provided with collecting ring, and is provided with nozzle between collecting ring and holder nut.
For the water entering being dispersed, directly over described nozzle bottom, position is fixed with a cylindrical aproll post.
In order further water nitrogen mixture being sprayed evenly from spray orifice, and to guarantee shower nozzle protected area, describedly centered by aproll post, to be evenly outwards provided with the round spray orifice of two circles, and the equal outward-dipping one-tenth obtuse angle of the angle of spray orifice, described obtuse angle is between 90 to 180.
The beneficial effects of the utility model are: air inlet pipe can be connected with outside nitrogen pipe network, water inlet pipe can be connected with outside water supply network, air feed and water supply simultaneously, by holder nut, collecting ring is fixedly connected with nozzle, form complete two-phase flow shower nozzle, and the aproll post of nozzle the inside can disperse the water of water nozzle ejection, disperse the rear air pressure of nitrogen that utilizes water nitrogen mixture is sprayed from spray orifice atomization, not only improved the usefulness of fire extinguishing, and installed simple, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the cutaway view of a kind of two-phase flow fire extinguishing sprayer described in the utility model;
Fig. 2 is the structural representation of a kind of two-phase flow fire extinguishing sprayer described in the utility model;
Fig. 3 is the inside top view of nozzle described in the utility model;
Fig. 4 is the structural representation of water nozzle holder described in the utility model;
Fig. 5 is the structural representation of water fittings described in the utility model;
In figure: 1-water inlet pipe, 2-bonding pad, 3-air inlet pipe, 4-pipe box, 5-screw holder, 6-screw thread, 7-locking nut, 8-water fittings, 9-aqueous vapor ring flange, 10-water nozzle holder, 11-collecting ring, 12-holder nut, 13-nozzle, 14-aproll post, 15-spray orifice, 16-air passing hole, 17-water hole.
The specific embodiment
With reference to the accompanying drawings a kind of two-phase flow fire extinguishing sprayer described in the utility model is described further:
As shown in Fig. 1,2,3,4 or 5, a kind of two-phase flow fire extinguishing sprayer, described pipe box 4 foots are provided with nozzle 13, the water inlet pipe 1 and pipe box 4 top positions that in described pipe box 4, are provided with hollow are provided with air inlet pipe 3, the outer screw holder 5 that is provided with of described pipe box 4, described water inlet pipe 3 is provided with bonding pad 2 with pipe box 4 top positions, makes like this sealing effectiveness of nitrogen better; Described screw holder 5 is provided with on screw thread 6 and screw thread 6 and is screwed with locking nut 7, can conveniently fixedly mount fire extinguishing sprayer like this; Described water inlet pipe 1 and air inlet pipe 3 bottoms are separately installed with water fittings 8 and aqueous vapor ring flange 9, and aqueous vapor ring flange 9 belows are connected with water nozzle holder 10, described water nozzle holder 10 lower surfaces are provided with on screw thread 6 and screw thread 6 and are screwed with holder nut 12, they in the middle of described water nozzle holder 10, be the water hole 17 of a hollow, and the quantity that is evenly provided with a plurality of air passing holes 16 and air passing hole 16 around water hole 17 is more than six.Described water fittings 8 bottoms are provided with collecting ring 11, and be provided with nozzle 13 between collecting ring 11 and holder nut 12, like this can be conveniently to nozzle 13 installing/dismountings, the effect of collecting ring 11 is the air inflows that regulate nitrogen in air inlet pipe 3, principle is the gap of controlling between collecting ring 11 and water hole, meanwhile, directly over nozzle 13 bottoms, position is fixed with a cylindrical aproll post 14; Meanwhile, around being evenly outwards provided with the round spray orifice of two circles 15 centered by aproll post 14, the quantity of described spray orifice 15 is more than at least six, and the equal outward-dipping one-tenth obtuse angle of the angle of each spray orifice 15, and described obtuse angle is between 90 to 180 degree.Described aproll post 14 is that the water of water inlet pipe 1 ejection is dispersed, and disperses the rear air pressure of nitrogen that utilizes water nitrogen mixture is sprayed from spray orifice 15 atomizations.