CN200963462Y - Handcart type expansion graphite fire extinguishing apparatus - Google Patents

Abstract

The utility model provides a go-cart type inflation graphite extinguisher for extinguishing small and medium alkali metals fire, which comprises an extinguishing agent 12, a stander 10, a cylinder 5 and a utensil head 2, wherein, the cylinder 5 is positioned on the stander 10. The upper end of the cylinder 5 is connected with the utensil head 2. An inner pipe 4 inside the cylinder 5 is communicated with the utensil head 2. The connection portion between the inner pipe 4 and the utensil head 2 is arranged a spring 11. A spanner 1 is arranged on the top of the utensil head 2 and is connected with the spring 11. A pressure meter 7 and a safety pressure relief device 3 are arranged on side face of the utensil head 2. A spray soft pipe 8 is communicated with the utensil head 2 vertically. A flare spray mouth 9 is connected with the spray soft pipe 8. A flare powder feeding mouth 6 is connected with the lower end of the inner pipe 4. The diameters of the inner pipe 4 and the spray soft pipe 8 are both from phi 6mm to phi 22mm. The utility model can effectively extinguish small and medium alkali metals fire with the supplied go-cart type inflation graphite extinguisher.

Description

Cart type expanded graphite fire extinguisher

Technical field

The utility model belongs to the fire extinguisher field, is specifically related to a kind of cart type expanded graphite fire extinguisher that middle-size and small-size alkali metal fire is used that puts out.

Background technology

The alkali metal fire, for example the characteristics of sodium fire are, surface combustion, caloric value is big, and produces a large amount of dense smoke, and personnel are difficult to closely put out a fire, and the fire power of regeneration is strong, is difficult for putting out, and second-time burning takes place easily.Alkali-metal chemism has determined that water, carbon dioxide and organic class extinguishing chemical etc. can't be used for putting out of its fire; Common dry powder class such as sodium acid carbonate extinguishing chemical sinks to the bottom easily because proportion is too big, and sodium acid carbonate easily decomposes generation water, so also be impractical in putting out of alkali metal fire.Therefore, alkali metal manufacturer or user all adopt salt and sand to handle the fire incident that alkali metal causes owing to do not have suitable extinguishing device and suitable extinguishing chemical temporarily.

In the existing report, the people such as J.M.SIMPSON of Britain UKAEA are at Graphite-basedextinguishants for liquid metal fires (Science and technologyof fast reactor safety, British Nuclear Energy Society, London, 1986) mention in the literary composition with the graphite-based extinguishing chemical fire extinguisher of the 25kg level alkali metal fire that goes out of packing into, and for the service behaviour of fire extinguisher itself, as the technical parameter of graphite-based extinguishing chemical and the concrete structure of extinguishing chemical spraying device, design parameter and operation principle thereof all are not described, and point out that there is the ill problem that sprays in this kind equipment.

Summary of the invention

The utility model provides a kind of cart type expanded graphite fire extinguisher that effectively puts out middle-size and small-size alkali metal fire.

Because the expanded graphite extinguishing chemical is the flakey powder agent, equally with common dry powder class extinguishing chemical belong to the powdery type extinguishing chemical, but the granularity of common dry powder class fire extinguisher is very thin, good fluidity, and the granularity of expanded graphite extinguishing chemical is thicker than common powder extinguishing agent, mobile non-constant.Exist when adopting existing dry powder extinguisher to spray the expanded graphite extinguishing chemical and spray very not smooth or serious clogging, its spraying rate only is about 1%.Can not spray smoothly and blocking problem in order to solve the expanded graphite extinguishing chemical, the utility model is based on cart type reservoir pressure dry powder extinguisher MFTZ35 tank body, adopted following corrective measure: one, the needle point structure of pipe 4 lower ends in the tube is changed into the powder input nozzle 6 of horn mouth form, reduced local resistance loss when making into powder, reached to increase and advanced the powder rate, alleviated the beneficial effect of the mobile difference of expanded graphite extinguishing chemical.Two, the device size in the fire extinguisher is improved.

The utility model provides a kind of cart type expanded graphite fire extinguisher, include extinguishing chemical 12, vehicle frame [msl] 10, cylindrical shell 5, device head 2, wherein, cylindrical shell 5 is positioned on the vehicle frame 10, cylindrical shell 5 upper ends link to each other with device head 2, pipe 4 is communicated with device head 2 in the tube of cylindrical shell 5 inside, pipe 4 is equipped with spring 11 with device head 2 junctions in the tube, device head 2 tops are equipped with spanner 1, and spanner 1 links to each other with spring 11, and device head 2 sides are equipped with Pressure gauge 7 and safety relief device 3, jet hose 8 and device head 2 vertical connections, bell-shaped nozzle 9 is connected with jet hose 8, and pipe 4 lower ends connect tubaeform powder input nozzle 6 in the tube, the diameter of pipe 4 in the tube, the diameter of jet hose 8 is φ 6mm～φ 22mm.

When using cart type expanded graphite fire extinguisher provided by the utility model to put out the alkali metal fire, sodium fire for example, extinguishing chemical sprays in burning sodium surface, the expanded graphite expanded by heating, and above burner body, form fluffy separation layer, stoped the convection current conduction between air and the combustion front effectively, cut off the approach that oxygen arrives at the combustion zone, sodium cause of fire anoxia asphyxia and extinguishing.This fire extinguisher has very high fire-fighting efficiency to middle-size and small-size pond formula sodium fire.Can control the burning of sodium rapidly, stop the aerocolloidal generation of sodium, recover the visibility of scene of fire rapidly, provide possibility for further closely handling.

Description of drawings

Fig. 1 cart type expanded graphite extinguisher structure figure

Fig. 2 cart type expanded graphite fire extinguisher device head schematic diagram

The specific embodiment

The present invention is further elaborated below in conjunction with embodiment.

Embodiment 1

As shown in Figure 1 and Figure 2, a kind of cart type expanded graphite fire extinguisher includes extinguishing chemical 12, vehicle frame 10, cylindrical shell 5, device head 2.

The fire extinguisher that the utility model provides has disposed the vehicle frame 10 of band handle, cylindrical shell 5 places on the vehicle frame 10, cylindrical shell 5 upper ends link to each other with device head 2, pipe 4 is communicated with device head 2 in the tube of cylindrical shell 5 inside, pipe 4 is equipped with spring 11 with device head 2 junctions in the tube, device head 2 tops are equipped with spanner 1, and spanner 1 links to each other with spring 11, device head side is equipped with Pressure gauge 7 and safety relief device 3, in order to be convenient to change injection direction in use, the utility model has been prepared jet hose 8, can make the spraying scope have bigger flexibility to the effect of a plurality of directions sprayings to reach.Be connected with jet hose 8 and bell-shaped nozzle 9 perpendicular to pipe 4 directions in the tube on the device head 2.

The harm of high pressure when fire extinguisher is dismantled, the utility model is provided with safety relief device 3 in device head 2 and cylindrical shell 5 junctions.

The subtended angle of this fire extinguisher powder input nozzle 6 can be 10 °～30 °, and present embodiment adopts 25 °, and the diameter of pipe 4, jet hose 8 is φ 6mm～φ 22mm in the tube, and present embodiment adopts φ 15mm.

When this fire extinguisher uses, spanner 1 is pulled down, spring 11 unclamps, and pipe 4 passages are opened in the tube, hold shower nozzle 9, aim at scene of fire spray fire extinguishing agent 12, extinguishing chemical 12 reexpansion of being heated, and above burner body, form fluffy separation layer, stoped the convection current conduction between air and the combustion front effectively, cut off the approach that oxygen arrives at the combustion zone, sodium cause of fire anoxia asphyxia and extinguishing.Middle-size and small-size pond formula sodium fire had very high fire-fighting efficiency.Can control the burning of sodium rapidly, stop the aerocolloidal generation of sodium, recover the visibility of scene of fire rapidly, provide possibility for further closely handling.

This extinguishing device can be applied to the fire-fighting fire extinguishing of alkali metal manufacturer middle-size and small-size pond formula alkali metal fire.Extinguishing grade is the 5D level, extinguishing chemical 11 useful loads 9～16kg, and fire-fighting area is below the 2m2, cylindrical shell 5 total measurement (volume)s are 35.5L.

Claims (3)

1. cart type expanded graphite fire extinguisher, include extinguishing chemical (12), vehicle frame (10), cylindrical shell (5), device head (2), wherein, cylindrical shell (5) is positioned on the vehicle frame (10), cylindrical shell (5) upper end links to each other with device head (2), the inner interior pipe of tube (4) of cylindrical shell (5) is communicated with device head (2), pipe (4) is equipped with spring (11) with device head (2) junction in the tube, device head (2) top is equipped with spanner (1), and spanner (1) links to each other with spring (11), device head (2) side is equipped with Pressure gauge (7) and safety relief device (3), jet hose (8) and device head (2) vertical connection, bell-shaped nozzle (9) is connected with jet hose (8), it is characterized in that: pipe (4) lower end connects tubaeform powder input nozzle (6) in the tube, the diameter of pipe (4) in the tube, the diameter of jet hose (8) is φ 6mm～φ 22mm.

2. according to the described fire extinguisher of claim 1, it is characterized in that said extinguishing chemical (12) is a graphite.

3. according to the described fire extinguisher of claim 1, it is characterized in that said tubaeform powder input nozzle (6), subtended angle are 10 °～30 °.

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