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Fire-fighting sprinkler head with circular-arc nozzle

A sprinkler head, arc-shaped technology, applied in the field of fire extinguishing equipment, can solve the problems of delaying fire extinguishing time, wasting fire extinguishing agent, etc., and achieve the effects of less fire extinguishing agent, low fire extinguishing cost, and convenient use.

Inactive Publication Date: 2010-01-20
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sprinkler head of the mechanical fluid spraying fire extinguishing agent fire extinguishing device in the known technology adopts a ring-shaped nozzle groove, and the fire extinguishing agent such as water film-forming sprayed from the ring nozzle is formed into a ring shape, and the fire is extinguished by covering the oil surface with the fire extinguishing agent itself. Not only wasting fire extinguishing agent but also delaying fire extinguishing time

Method used

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  • Fire-fighting sprinkler head with circular-arc nozzle
  • Fire-fighting sprinkler head with circular-arc nozzle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] see figure 1 with figure 2 , the fire sprinkler head with arc-shaped nozzle includes sprinkler head body 1, bearing 5, cone 3 and connecting pipe 6. The sprinkler head body 1 is a stainless steel cylinder with a diameter of 60 mm and a thickness of 10 mm. There are four arc-shaped nozzle grooves 2 evenly distributed on the top circumference of the sprinkler head body 1. The equation of the centerline of the arc nozzle at the upper end of the sprinkler head body 1 is: x=rcost, y=rsint, where the arc base circle radius r is 27mm, the arc spread angle t is 0-4π / 9, and a certain injection angle is formed between the axial lower end and the axial upper end of the nozzle groove 2, the injection The size of the angle changes uniformly from the starting end B of the nozzle groove at the upper axial end to the terminal end C end, and the width between the axial lower end and the axial upper end of the nozzle groove 2 also changes uniformly; The spray angle is 70°, the outlet ...

Embodiment 2

[0018] The diameter of the sprinkler head body is 40mm, and the thickness is 8mm; there are three arc-shaped nozzle slots evenly distributed on the top circumference of the sprinkler head body. The groove width is 1.5mm, and the groove width of the outlet at the upper axial end is 1.0mm; the injection angle at the B end of the nozzle groove 2 is 45°, where the groove width of the inlet at the lower axial end of the nozzle groove is 2.0mm, and the groove at the outlet at the upper axial end The width is 1.5mm; the arc base circle radius r is 18mm, the arc spread angle t is 0~11π / 18, the bearing 5 is a K811 series flat seal with an inner ring waterproof bearing with an outer diameter of 35mm and an inner diameter of 20mm, and a connecting pipe 6 The length is 100mm and the outer diameter is 20mm.

[0019] Others are with embodiment 1.

Embodiment 3

[0021] The diameter of the sprinkler head body is 50mm, and the thickness is 10mm; there are two arc-shaped nozzle slots evenly distributed on the top circumference of the sprinkler head body. The groove width of the nozzle groove is 2.0mm, the groove width of the outlet at the upper axial end is 1.5mm; the jet angle at the B end of the nozzle groove starting end is 45°, here the groove width of the inlet of the lower axial end of the nozzle groove is 2.3mm, and the groove of the outlet at the upper axial end The width is 2.0mm; the arc base circle radius r is 22mm, the arc spread angle t is 0~17π / 18, the bearing 5 adopts the K811 series flat seal with an inner ring waterproof bearing with an outer diameter of 42mm and an inner diameter of 25mm, and the connecting pipe 6 The length is 100mm and the outer diameter is 25mm.

[0022] Others are with embodiment 1.

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Abstract

The invention relates to a fire-fighting device, in particular to a fire-fighting sprinkler head with a circular-arc nozzle, comprising a sprinkler head body, a bearing and a connecting pipe. More than two axially-crossed circular-arc nozzle slots are evenly distributed on the circumference at the top of the cylindrical bottle cap-shaped sprinkler head body; an eject angle is formed between the axial lower end and the axial upper end of the circular-arc nozzle slot; the initial end at the axial upper end of the nozzle slot is a B end and the terminal end is a C end; the eject angle varies evenly from the initial end B to the terminal end C. When fire-extinguishing agent passes through the circular-arc nozzle slot, the sprinkler head obtains a tangential force to rotate under the action of pressure, so that the sprinkled fire-extinguishing agent forms a cake shape covered on the oil surface of flame around the sprinkler head. The sprinkler head is suitable for fire-extinguishing agents such as water and hydrogenic film foaming liquid, has the advantages of short extinguishing time, little fire-extinguishing agent, low extinguishing cost, convenient, flexible and efficient use, and is suitable for fighting fire at ground of hangar, decks, and the like.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing equipment, and in particular relates to a sprinkler head of a mechanical fluid spraying fire extinguishing agent fire extinguishing device. Background technique [0002] In order to prevent and extinguish oil fires on the ground, fire extinguishing sprinklers are arranged on the ground, and fire extinguishing agents such as water film-forming foam liquid or water are sprayed from bottom to top. The sprinkler head of the mechanical fluid spraying fire extinguishing agent fire extinguishing device in the known technology adopts a ring-shaped nozzle groove, and the fire extinguishing agent such as water film-forming sprayed from the ring nozzle is formed into a ring shape, and the fire is extinguished by covering the oil surface with the fire extinguishing agent itself. Both waste fire extinguishing agent and delay fire extinguishing time. Contents of the invention [0003] In order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C31/05
Inventor 李权威秦俊唐海东倪佳迪
Owner UNIV OF SCI & TECH OF CHINA
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