Portable water mist fire extinguisher

A fire extinguisher and fine water mist technology, applied in fire rescue and other fields, can solve problems such as poor reliability, inconvenient use, complex control system, etc., and achieve the effects of reduced energy consumption, simplified structure, and convenient use

Inactive Publication Date: 2009-11-11
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The atomization quality of the dual-flow medium atomization system is generally good, but the disadvantage is that the driving gas consumes a lot of energy. Generally, two steel cylinders for gas and liquid are used for transportation, and the control system is more complicated. Therefore, the system cost is high and the use is not easy. Convenience, reliability is also relatively poor, for example just there is such shortcoming in the fine water mist fire extinguishing technology of report such as Chinese patent document CN1429638A and CN2589011Y

Method used

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  • Portable water mist fire extinguisher
  • Portable water mist fire extinguisher
  • Portable water mist fire extinguisher

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The fire extinguisher designed in this embodiment includes a pressure storage cylinder 1 and a siphon tube 2 provided therein. The mouth of the pressure storage cylinder 1 is connected to the start valve 4 with a tapered thread, and the start valve 4 communicates with the siphon tube 2. Handle 8, press the handle 8 down to open the starting valve 4, set the safety plug 7 on the starting valve 4, set the pressure gauge 3 in the middle of the starting valve 4, set the safety plug 5 and the handle 6 on one side of the starting valve 4, and set the safety plug 5 and the handle 6 on the other side of the starting valve 4 A hose interface 9 is arranged on the side, and a pressure-resistant hose 10 is connected between the hose interface 9 and the spray head 12. The spray head 12 is placed on the entrainment belt 11, and the entrainment belt 11 is installed on the bottle body of the pressure storage cylinder 1 (see figure 1 ).

[0037] The spool diameter of the starting valve ...

Embodiment 2

[0041] The structure of the fire extinguisher designed in this embodiment is basically the same as in Embodiment 1. The distinguishing feature is that the structure of the spray head 12 is different. The central through hole between the nozzle 13 and the mixing chamber 16 of the spray head 12 of this embodiment does not have the swirl plate 14 and the flow splitter 15 which are inlaid and installed in sequence, but replace the front sealing gasket 25, and the rest of the structure is the same as Embodiment 1 (see Figure 9 ). The sealing gasket 25 is made of rubber, with a diameter of 10 mm and a thickness of 2 mm. The fire extinguishing agent used in the fire extinguisher of this embodiment is water and carbon dioxide gas. The steel cylinder 1 is made of ordinary pressure-resistant steel. The inner wall of the steel cylinder 1 is coated with an anti-corrosion coating. The total volume in the bottle is about 8 liters. 4 / 5, under the pressure of 3MPa, dissolve carbon dioxide...

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Abstract

The invention relates to a portable water mist fire extinguisher, which comprises a pressure storage steel bottle and an injector head and is characterized in that the distinguisher adopts single bottle design and the pressure storage steel bottle is filled with water of supersaturated carbon dioxide accounting for 4/5 capacity of the pressure storage steel bottle at the pressure of 2.5-4 MPa; the injector head consists of a nozzle, a mixing chamber and a connector which are all cut with a center through hole and assembled mechanically in sequence, wherein a swirler vane and a splitter vane are installed at the position of the center through hole between the nozzle and the mixing chamber; a spoiler vane, a throttling element and a rear sealing gasket are installed at the position of the center through hole between the mixing chamber and the connector; the center through hole of the nozzle is formed by transitional connection of a front throttling hole section and a front circulation hole section; the center through hole of the throttling element is formed by transitional connection of a rear throttling hole section and a rear circulation hole section; the swirler vane is cut with a polygon tangent scattering centre hole; and the splitter vane is evenly distributed with at least three splitter holes, the spoiler vane takes a shape of a three leaves evenly-distributed in space, and the connecting center of the three leaves is a wafer.

Description

technical field [0001] The invention relates to fire-fighting equipment, in particular to a hand-held fine water mist fire extinguisher with dual-fluid atomization fire-extinguishing effect and single-fluid delivery simple structure. Background technique [0002] Portable precipitation fire extinguishers need to use haloalkane series fire extinguishing agents. However, because the halon series fire extinguishing agents have a destructive effect on the ozone layer, their use is restricted and gradually banned. The whole world began to look extensively for the substitutes of haloalkane series fire extinguishing agents. Water mist technology is a technology with no environmental pollution, low water consumption, and little damage to protected objects, which has attracted people's attention to the use of water mist to replace halon series fire extinguishing agents. The recognized fire extinguishing mechanism of fine water mist is: because the total surface of water increases g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C13/64
Inventor 吴晋湘闫运忠刘联胜梁强王恩宇苟湘
Owner HEBEI UNIV OF TECH
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