RU173819U1 - FIRE LIFT STAFF NOZZLE - Google Patents

Abstract

The utility model relates to fire fighting equipment, namely to the nozzle of a fire monitor for supplying a fire extinguishing liquid to a fire source. In particular, the nozzle is mounted on stationary and portable fire monitors for the completion of fire tankers. The fire monitor nozzle, including the flow-forming nozzle, nut, streamlined insert, is mounted on the longitudinal stabilizing ribs in the nozzle, moreover, the fire monitor nozzle and the fairing in cross section its longitudinal axis changes shape from a circle to an oval shape with a long axis of an oval parallel to the horizontal line of the level of the fire front, nozzle, streamline Atelier and stabilizing plates are made with blade edges at the ends of the outlet of the liquid flow stream, the cowl and stabilizing plates at the stream entrance are made in streamlined forms, the blade edge of the nozzle is made by grooving the outlet end face of the nozzle in a semicircle. substances with a decrease in its consumption on the fire extinguishing area. 7 ill.

Description

The utility model relates to fire fighting equipment, namely to the nozzle of a fire monitor for supplying a fire extinguishing fluid to a fire. In particular, the nozzle is mounted on stationary and portable fire monitors for the completion of fire tankers.

Known nozzles for supplying a fire extinguisher with stationary fire monitors trunks containing a housing having an input end configured to connect to a fluid supply device, and an output end, a screen that completely obscures the output end and is installed with the formation of a gap between them for the passage of fluid, characterized in that the screen is fixed, the output end of the housing freely covers the sleeve with the possibility of its movement with a change in the gap for the passage of fluid, while the sleeve to nematic connected with the transmission output member "nut-screw", the input unit which is connected with the actuator. (Patent RU No. 135926, IPC А62С 31/02, publication date 12/27/2013). [one]

The disadvantage of this type of device is the relatively low width, strength and range of the jet with a large flow rate of the extinguishing agent in the fire extinguishing area.

Well-known [2-12] technical solutions due to a certain nozzle nozzle diameter in a circle have a large consumption of extinguishing agent in a fire extinguishing area with an insufficiently effective force, width and range of the jet, as well as low manufacturability in operation due to the low quality of the gun barrel with the presence of a certain turbulence of the flow.

Closest to the claimed technical solution is (patent RU No. 62829, IPC А62С 31/02, publication date 05/10/2007.) [13]

Nozzles for a fire barrel, including a housing with an internal flow channel, a flow rate equalizer is installed in the nozzle part of the nozzle body, which is a streamlined insert with stabilizing plates mounted on it, mounted with the edges forming to tilt toward the flow direction, the flow rate equalizer is mounted with the possibility of support stabilizing plates on the conical part of the internal flow channel.

The disadvantage of this type of device is the relatively low width, strength and range of the jet with a large flow rate of the extinguishing agent in the fire extinguishing area.

The proposed technical solution allows to increase the range, width and power of the jet extinguishing agent with a decrease in its flow rate on the fire extinguishing area.

The inventive nozzle of the fire monitor, including the flow-forming nozzle, nut, streamlined insert mounted on the longitudinal stabilizing ribs in the nozzle, the nozzle of the fire monitor and the cowling in cross section along its longitudinal axis changes shape from a circle to an oval shape with a long oval axis, parallel to the horizontal line of the level of the front of the fire, the nozzle, fairing and stabilizing plates are made with blade edges at the ends of the exit stream of the fluid flow, obt Catel and stabilizing plate at the jet inlet adapted faired The blade edge of the nozzle bore is formed semicircle nozzle exit end.

Distinctive features are:

 the nozzle of the fire monitor and the cowling in cross section along its longitudinal axis change shape from a circle to an oval shape with a long axis of an oval parallel to the horizontal line of the level of the fire front, which together provides a greater lamination of the stream of flow in the transverse and longitudinal sections, and this, in turn, it helps to reduce resistance to the movement of the flow and increases the range, width and strength of the supply of the jet of extinguishing agent into the fire;

 the nozzle, fairing and stabilizing plates are made with blade edges at the ends of the outlet of the liquid stream, which reduces turbulent disturbances in the transverse plane of the cross section of the liquid stream when it is separated from the contacting surfaces, reduces cavitation loosening of the forming surface of the stream, averaging the flow rate on the forming surface, and this, in turn, reduces the resistance to movement in the air and increases the range, width and strength of the flow of the extinguishing agent stream into the fire;

 the cowl and stabilizing plates at the inlet of the stream are made with streamlined shapes, which provides greater lamination of the stream stream in the longitudinal section, and this, in turn, helps to reduce resistance to the movement of the stream and increases the range, width and force of the stream of extinguishing agent to the fire;

 the blade edge of the nozzle is made by a groove of the outlet end face of the nozzle in a semicircle, which maintains resistance to deformation of the nozzle surface under the pressure of the fluid flow and reduces the capture of the jet of extinguishing agent.

Comparison of the proposed solutions with analogues and prototype did not allow to identify in them the signs that distinguish the claimed solution, which allows us to conclude that the criterion of "novelty".

In FIG. 1 shows a fire monitor on a frontal view, comprising a base 1, a receiving housing with a pipe 2, a rotary device 3, a barrel 4 with a flow-forming nozzle 5, fixed with a nut 6.

In FIG. 2 shows the assembly I of FIG. 1, comprising a barrel 4, a flow-forming nozzle 5, a nut 6, longitudinal stabilizing ribs 7, a fairing 8, its streamlined shape 13, and a blade edge of the fairing 9.

In FIG. 3 shows a section AA from FIG. 2, comprising a barrel 4, a flow-forming nozzle 5, a nut 6, longitudinal stabilizing ribs 7, a fairing 8.

In FIG. 4 shows section BB of FIG. 2, comprising a flow-forming nozzle 5, a fairing 8.

In FIG. 5 shows a cross-section BB of FIG. 2, comprising a flow-forming nozzle 5, a blade edge of the fairing 9.

In FIG. 6 is a view G of FIG. 2, comprising a flow-forming nozzle 5, a blade edge of the nozzle 10, a groove of the outlet end face of the nozzle with a semicircle 12.

In FIG. 7 shows a section DD of FIG. 2, comprising a longitudinal stabilizing rib 7, a blade edge of the rib 11, a streamlined shape 14.

The nozzle of the fire monitors works as follows.

The extinguishing agent is supplied under pressure to the fire monitor 1, passes into the flow forming nozzle 5, the flow forming fairing 8, fixed by plates 7 stabilizing the fluid flow in the longitudinal direction from turbulence, the fairing 8 in cross section along its longitudinal axis synchronously repeats the oval shape of the nozzle for 5 s the long axis of the oval, parallel to the horizontal line of the front of the fire, together providing lamination of the stream stream in a longitudinal section and increasing the range, the rin and strength of the jet into the fire. The nozzle 5, the fairing 8 and its stabilizing plates 7 are made at the ends of the exiting stream of the extinguishing liquid stream with blade edges 10, 9 and 11, respectively, providing a reduction in turbulent disturbances in the transverse plane of the cross section of the extinguishing liquid stream, reducing cavitation loosening of the forming surface of the stream, averaging the flow rate on the generatrix of the surface and increasing the range, width and power of the jet of fire extinguishing substance into the fire. The fairing 8 and its stabilizing plates 7 at the inlet of the jet made with streamlined shapes 13 and 14, respectively, provide greater lamination of the stream stream in a longitudinal section and increase the range and power of the stream of extinguishing fluid to the fire. The blade edge 10 of the nozzle 5 is made by a groove of the outlet end of the nozzle with a semicircle 12, which with this shape of the end retains resistance to deformation of the nozzle surface under the pressure of the extinguishing fluid flow.

The manufacture of flow-forming nozzles 5 is as follows. Initially, a blank in the form of a hollow truncated cone with the appropriate dimensions and with a groove of the outlet end face of the nozzle with a semicircle 12 is machined. At the second stage, in the heated state, the outlet of the nozzle 5 is deformed on the press to the corresponding oval shape according to the patterns shown in section BB of FIG. 4 and section BB of FIG. 5.

The manufacture of flow-forming fairing 8 is as follows. Initially, the workpiece is machined according to the streamlined shape template 13 of FIG. 2. At the second stage, the workpiece is machined according to the template of a truncated cone with a diameter size in section BB equal to the larger diameter of the oval in this section. Similarly, the taper is turned to the section BB. At the next stage, a milling cutter and a locksmith form a fairing in cross section along its longitudinal axis, synchronously repeating the oval shape of the nozzle with the long axis of the ellipse parallel to the horizontal line of the fire front. To the fairing 8, 4 stabilizing plates 7 are welded at an angle of 45 ° to the level of the horizon, and then the alignment of the nozzle 5 and the fairing 8 is adjusted.

The proposed nozzle of the fire monitors makes it possible to extinguish the fire by increasing the range, width and power of the jet extinguishing agent.

Information sources

1. Patent RU No. 135926, IPC А62С 31/02, publication date 12/27/2013.

2. Patent RU No. 2356592, IPC А62С 31/02, publication date 05/27/2009.

3. Patent RU No. 2426603, IPC B05B 17/00, publication date 08/28/2011.

4. Patent RU No. 127640, IPC A62C 31/02, publication date 05/10/2013.

5. Patent RU No. 2319530, IPC А62С 37/00, publication date 03/20/2008.

6. Patent RU No. 2391125, IPC А62С 31/00, publication date 10.06.2010.

7. Patent RU No. 2411971, IPC А62С 31/00, publication date 02/20/2011.

8. Patent RU No. 2104073, IPC А62С 37/00, publication date 02/10/1998.

9. Copyright certificate SU No. 910167, IPC А62С 31/02, publication date 05/10/1982.

10. Patent RU No. 68328, IPC А62С 35/00, publication date 11/27/2007.

11. Patent RU No. 79045, IPC А62С 31/02, publication date 12/20/2008.

12. Copyright certificate SU No. 1042224 IPC А62С 31/02, publication date 05/10/1984.

13. Patent RU No. 62829 IPC А62С 31/02, publication date 05/10/2007.

Claims (1)

The fire monitor barrel nozzle, including the flow-forming nozzle, nut, streamlined insert fixed to the longitudinal stabilizing ribs in the nozzle, characterized in that the fire monitor barrel nozzle and fairing in cross section along its longitudinal axis changes shape from a circle to an oval shape with a long axis oval, located parallel to the horizontal line of the level of the front of the fire, the nozzle, fairing and stabilizing plates are made with blade edges at the ends of the exit stream of the fluid stream, btekatel and stabilizing plate at the jet inlet adapted faired The blade edge of the nozzle bore is formed semicircle nozzle exit end.

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