CN107961472A - With frequency selectivity noise reduction layer, noise reduction fighting nozzle component and its application - Google Patents
With frequency selectivity noise reduction layer, noise reduction fighting nozzle component and its application Download PDFInfo
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- CN107961472A CN107961472A CN201710984189.6A CN201710984189A CN107961472A CN 107961472 A CN107961472 A CN 107961472A CN 201710984189 A CN201710984189 A CN 201710984189A CN 107961472 A CN107961472 A CN 107961472A
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- Prior art keywords
- noise reduction
- fighting nozzle
- fighting
- muffler
- reduction layer
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Pipe Accessories (AREA)
Abstract
Illustrate the fighting nozzle component of the noise reduction of the extinguishing device for construction and installation, fighting nozzle component has at least one fighting nozzle and the muffler for corresponding fighting nozzle, and fighting nozzle is used for the outflow of extinguishing chemical.Corresponding fighting nozzle is up to 3mm with least one outflow opening with geometry, geometry at least one extension perpendicular to the direction of propagation.Corresponding muffler has frequency selectivity noise reduction layer, and noise reduction layer is arranged so that the extinguishing chemical jet stream from the discharge of corresponding outflow opening is impinged upon in noise reduction layer in the propagation direction.The latter has the elevated sound absorption degree from the audio frequency of 125Hz, and preferably melamine resin foam.In addition the present invention relates to application at the fighting nozzle of the inert gas extinguishing installation for being arranged on construction and installation, frequency selectivity noise reduction layer, for reducing noise level during fire extinguishing procedure.
Description
Technical field
The present invention relates to a kind of extinguishing device, noise reduction fighting nozzle component for construction and installation, the sprayer for extinguishing fire
Nozzle assembly has at least one fighting nozzle, and the fighting nozzle is used for the outflow of extinguishing chemical.Corresponding fighting nozzle has extremely
A few outflow opening with geometry, the geometry is perpendicular to the direction of propagation
（Ausbreitungsrichtung）At least one extension in be up to 3mm.
Background technology
Known gas extinguishing device and extinguishing method from the prior art, wherein, during emptying, extinguishing chemical holds from pressure
One or more fighting nozzle is directed to by container value and pipe-line system in device.（Only）It is stored in the pressure vessel
Extinguishing chemical can be, for example, inert gas, such as nitrogen, argon gas or carbon dioxide.Alternatively, the extinguishing chemical can wrap
Include extinguishing fluid and propelling gas.In this case, the extinguishing fluid is the extinguishing fluid of chemical action.In particular,
Its halogenated alkane based on for example, HFC-227 or HFC-23（Halogenkohlenwasserstoffen）（Breathe out dragon）Or
Sold based on for example, fluorinated ketone of FK-5-1-12, the FK-5-1-12 with brand name Novec 1230.The propulsion
Gas is preferably such as the inert gas or carbon dioxide of nitrogen either argon gas.
In the scope for the fighting nozzle of the extinguishing device of construction and installation, it is known that different embodiments.It is general and
Speech, pipe are placed on the drain position of extinguishing device.In accordance with destination, building-extinguishing device lid formula installation
（deckenmontiert）, also, be set according to spatial volume and spatial geometric shape, multiple drain positions.Then, pipe end
Portion is closed using fighting nozzle, and the fighting nozzle is normally manufactured as to screw in component so that the simplification of installation is possible.
Typical example for fighting nozzle is the acorn nut for example as end cap（Hutmutter）, hole quilt in the end cap
Drill out, the hole forms the outlet for firing-fighting medium.
All fighting nozzles so far all have problems that, i.e. big noise hair is produced during fire extinguishing procedure
Exhibition.Because noise level can be up to 140dB for different nozzles, this noise level can damage the sense of hearing of the mankind
Scope in.In addition, the equipment in room to be put out a fire also is compromised.In particular, high noise level is for for example existing
The problem of stability of hard disk in calculating center or data service center.Have shown that, from the noise level of 120dB
Rise, partly or even from 90db, hard disk works faultyly.For the noise level of higher, it can result in persistently
Damage or even destroy.
In order to alleviate this problem, muffler, such as sintered body are known, and the sintered body is connected on the fighting nozzle
Flowed through afterwards and additionally.However, the percolation of other component has strongly reduced flowing velocity so that room air
No longer it is ensured that with being sufficiently mixed for fire-suppressant gas.
From 2012/136468 A2 of International Publication WO of the applicant, have at least one outflow opening, for going out
The equipment of the outflow of fiery medium is illustrated.Here, the outflow opening is characterized in that, the firing-fighting medium presents so flat
Jet shape（Strahlform）So that do not flow vortex and formed wherein, the flowing vortex radiation can be by the mankind
Hearing perceive sound spectrum wavelength sound wave.This is ensured that by the geometry of the outflow opening.According to the reality of there
Mode is applied, the outflow opening is by multiple small, each other side by side openings（For example, drilling）Form.It is described opening by so that
This arrangement so that they are acted on the medium of outflow basically as perforative hole.Thus, noise is reduced to maximum 90dB
It is possible.
Herein, the geometry that is linear, producing flat jet of the outflow opening causes, on the one hand, overall
, the sound power of acoustics be reduced significantly due to the sound wave that the flowing vortex by being substantially reduced now produces, and in addition
Frequency of the sound spectrum towards higher（That is, towards the audio frequency outside 10kHz）It is mobile.
Compared with the fighting nozzle being initially mentioned, the frequency spectrum of caused sound wave in scope can hear, acoustics
Frequency shifts about two to three quantitative levels of the scope towards higher.Meanwhile overall noise level bandwidth is advantageously
Reduce about 20dB.This is depended on, if the flat jet is by the outflow opening of slit-shaped or by by each other simultaneously
Either drilling is formed the opening or drilling abreast to row, multiple, small opening（dicht an dicht）Arrangement,
Also, the opening or drilling recombine into common flat jet immediately.
Even if obvious noise reduce by 2012/136468 A2 of WO it is described, reduce the fighting nozzle of sound
It has been be implemented that, however, remaining in noise in the frequency range higher than 10kHz, determined by design, low intensive reduces.
However, as already shown, these remaining, high frequency hydrodynamic noises still result in damage to sensitive hard disk and
Interference.
The content of the invention
Based on this, the task of the present invention is illustrate a kind of improved fighting nozzle component.
The task of the present invention is solved using the fighting nozzle component of noise reduction, and the fighting nozzle component, which has, to be used for accordingly
Fighting nozzle muffler.Corresponding muffler includes frequency selectivity noise reduction layer, and the noise reduction layer is arranged such that
Impinged upon in the propagation direction in the noise reduction layer from the firing-fighting medium jet stream of corresponding outflow opening discharge.The noise reduction layer tool
Have from the audio frequency of 125Hz, especially from the audio frequency of 250Hz（Significantly）Elevated sound absorption degree α.In particular, the noise reduction
Layer has a sound absorption degree α, and the sound absorption degree is from the frequency values of the either 250Hz of 125Hz from 0.1 or maximum 0.1 sound
Angle value is absorbed to set out（Significantly）Increase.
The basic thought of the present invention is to be had been decreased by according to 2012/136468 A2 of WO, the noise that are initially mentioned
Fighting nozzle and frequency selectivity noise reduction layer combination., hardly can be by here, the fighting nozzle being lowered by noise
Decay, low frequency, until the acoustical frequency spectrum share of 120Hz or 250Hz by towards until more than 10kHz, higher frequency
Frequency spectrum share moves, wherein, while the generation of the frequency spectrum share of low frequency is effectively reduced.The noise reduction layer is acutely damply proper
Act on well in this remaining, higher frequency frequency spectrum share, and otherwise this noise reduction layer is not suitable for decay hardly
Frequency spectrum share can be attenuated, low frequency.
As such, it is advantageous to remaining, higher frequency the frequency spectrum share have been able to using thin noise reduction layer effectively by
Tempestuously decay.
Another advantage is for realizing muffler with low technology and design cost.Thus, existing,
The extinguishing device that noise is lowered can be modified by using muffler in a straightforward manner.
In contrast, for fire extinguisher be initially mentioned, traditional, large capacity, mazy and bulky noise reduction
Equipment is required, and traditional fire extinguisher has relatively large outflow opening, and the muffling device is used for effective noise reduction.
In addition, adversely, this muffling device degree the earth is stretched into space, and even lingeringly provides the extinguishing chemical.
Here, the sound absorption degree α explanations, share sound, being absorbed of overall appearance is by much.In this way,
When sound absorption degree is 1, the sound all occurred is absorbed.In other words, do not reflect then.In contrast, in sound absorption degree
For 0 when, do not absorb.Here, sound that is overall, occurring is reflected.According to silene system, for the sound absorption degree α
Value usually between 0.1 and 0.9 and depending on surfacing and depending on audio frequency.
According to a kind of embodiment, the noise reduction layer has a sound absorption degree α, the sound absorption degree from 125Hz, especially
From the frequency values of 250Hz, from 0.1 or from the sound absorption angle value α increases for being up to 0.1, also, from 5000Hz's
Frequency values, the sound absorption angle value α for especially reaching at least 0.9 from 1000 frequency values.
According to a kind of advantageous embodiment, corresponding fighting nozzle has at least one including a geometry
Outflow opening, the geometry are up to 1mm, especially maximum at least one extension perpendicular to the direction of propagation
For 0.5mm.Thus, the frequency spectrum share of the acoustics is especially moved more than 10kHz far, especially more than 50kHz.It is so high
Audio frequency especially small noise reduction can be utilized to spend effectively be attenuated.
According to a kind of preferred embodiment, the noise reduction layer is the foam of open cell type, is especially made of plastics.Typical case
Ground, it is the melamine resin foam of perforate（Melaminharzschaum）.Alternatively, the noise reduction layer can be mineral
Fibrous layer.Noise reduction layer with perforative, unlimited hole by friction by the share of the power of acoustic energy particularly suitable for being converted into heat
Can and thus reduce acoustic energy.Here, noise reduction layer has additional advantage made of melamine resin foam, i.e. they
In addition meet to fireproof high request, that is to say, that they are difficult to be ignited.
According to another embodiment, the noise reduction layer with it is in the scope of 5mm to 50mm, especially exist
Layer thickness in the scope of 10mm to 30mm.
According to another embodiment, the muffler on it, the acoustic damping characteristic value of acoustics gone out by such with described
Fire-fighting mouth mutually tunes so that noise level is no more than maximum noise level value, the fighting nozzle tool during fire extinguishing procedure
There is its corresponding outflow opening, the maximum noise level value is 85dB, especially 80dB.Maximum allowable noise level
Value can be for example conditioned by the layer thickness that properly selects the noise reduction layer and/or average hole size.
According to a kind of embodiment, it is inert gas to set the extinguishing chemical for putting out a fire, especially nitrogen, argon gas or two
Carbonoxide.Substitute, it can be the extinguishing chemical of chemistry, such as breathe out dragon（Alkyl halide）, HFC227 or Novec1230.
Particularly advantageously, when the corresponding outflow opening in the fighting nozzle is so designed so that stream
Flat jet shape is presented in the extinguishing chemical gone out.Thus, the frequency spectrum share of the acoustics is especially moved and exceeded far
10kHz.In particular, corresponding outflow opening has crack shape or slit-shaped geometry.
According to a kind of embodiment, corresponding outflow opening along straight line or along camber line, more particularly along circle
Arc extends.
According to a kind of particularly advantageous embodiment, corresponding outflow opening has multiple openings or drilling, institute
State opening or drilling is arranged so that they are acted on the extinguishing chemical of outflow basically as coherent opening each other.Change
Yan Zhi, corresponding outflow opening are made of multiple openings and drilling.Preferably, the opening or the drilling have most
Greatly 1mm（Especially 0.5mm）Diameter.
According to a kind of particularly advantageous embodiment, the fighting nozzle is designed to diffuser（Diffusorrohr）Or
The columnar conical nozzle of person.Here, corresponding muffler is muffler pipe, the noise reduction layer is disposed in the muffler
At the inner side of pipe.The muffler pipe is so measured so that the noise reduction layer substantially completely surrounds the phase of the fighting nozzle
The outflow opening answered.Corresponding outflow opening has to the minimum range of opposed noise reduction layer, and the minimum range is in 5mm
Into the scope of 30mm, especially in the scope of 10mm to 20mm.
" completely surround " refers to herein, and the noise reduction layer of tubulose is along corresponding outflow opening, whole, axial
Extension surround, especially surround corresponding outflow opening." axial direction " refers to the rotation parallel to the muffler pipe
The direction of shaft axis.Such, noise reduction fighting nozzle component is special section space-efficient.Pass through corresponding outflow opening
To opposed noise reduction layer interval, space be sufficiently used for from corresponding outflow opening discharge it is extinguishing chemical, radial direction with
And the then propagation of axial direction.
According to a kind of advantageous embodiment, the muffler pipe has an axially projecting pipe fitting, the pipe fitting, from described
Corresponding outflow opening, rise in exterior end axial direction in until pipe outlet side obtains, construct there is axial direction exceed length
, the absorber room of acoustics, it is described beyond length in the scope of 5cm to 50cm, especially in the scope of 10cm to 20cm.
Advantageously, " be followed by " absorber room further reduces the noise level again.
Corresponding to fighting nozzle component according to the present invention, noise reduction, task of the invention is also by particularly advantageous, use
It is at the fighting nozzle of inert gas-extinguishing device for being arranged on construction and installation, frequency selectivity quieter material to apply quilt
Solve, the application is used to reduce sound noise level during fire extinguishing procedure.The fighting nozzle with it is at least one with
The outflow opening of geometry, the geometry are up to 3mm, outstanding at least one extension perpendicular to the direction of propagation
It is to be up to 0.5mm so that flowing vortex radiates the speed of substantially acoustics, and the flowing vortex appears in discharge
Extinguishing chemical jet stream in, the speed is in from 125Hz, higher frequency scope.The muffler is so disposed,
So that the extinguishing chemical jet stream discharged from corresponding outflow opening is impinged upon in the propagation direction and with minimum range and disappeared
In sound-absorbing layer.The noise reduction layer has from the audio frequency of 125Hz, especially from the audio frequency of 250Hz（Significantly）Elevated sound absorption
Spend α.
Brief description of the drawings
The present invention, characteristic described above, feature and advantage and realize these ways and means with implementation
It is apparent and more clearly intelligible in the association of description below example, the embodiment is combined by more detailed with attached drawing
Carefully illustrate.Here, show in schematic form：
Fig. 1 according to the state of the art, have tubulose fighting nozzle 11 fighting nozzle component 1', the fighting nozzle have it is narrow
The outflow opening 12 of gap-like.
Fig. 2 passes through cross section of the fighting nozzle shown in Fig. 1 along hatching II-II there；
Fig. 3 is traditional, " loud " fighting nozzle, the fighting nozzle that according to 2012/136468 A2 of WO, sound is lowered
And noise reduction according to the present invention fighting nozzle component acoustical frequency spectrum, and, in fighting nozzle group according to the present invention
Change procedure sound absorption degree, depending on frequency of quieter material used in part；
The first embodiment of Fig. 4 fighting nozzle components according to the present invention, tubulose, noise reduction；
Fig. 5 is shown in Fig. 4, the outlet of the fighting nozzle component of noise reduction is along the direction of observation V drawn there
View；
The second embodiment of Fig. 6 fighting nozzle components according to the present invention, tubulose, noise reduction, the fighting nozzle component
With multiple, slit-shaped outflow opening；
3rd embodiment of Fig. 7 fighting nozzle components according to the present invention, tubulose, noise reduction, the fighting nozzle component
With the linear diffusers being made of multiple arranged in succession, small drilling；
4th embodiment of Fig. 8 fighting nozzle components according to the present invention, tubulose, noise reduction, the fighting nozzle component
With for the deflecting element by the extinguishing chemical of discharge towards lid deflection；
5th embodiment of Fig. 9 fighting nozzle components according to the present invention, tubulose, noise reduction, the fighting nozzle group tool
It is useful for funnel derived from extinguishing chemical；
The sixth embodiment of Figure 10 fighting nozzle components according to the present invention, tubulose, noise reduction, the fighting nozzle component
Muffler with tripe shape；
The longitudinal section that Figure 11 passes through outflow opening, the known conical nozzle with arc-shaped；
Figure 12 is according to the top view of the outflow opening of the direction of observation XII drawn in fig. 11；
Figure 13 has the top view along the conical nozzle of circular arc, multiple small drillings；
Figure 14 has the first embodiment of fighting nozzle component such conical nozzle, according to the present invention, noise reduction；
Figure 15 has the second embodiment of muffler, noise reduction the conical nozzle of T-shaped；And
Figure 16 has the 3rd embodiment of according to the present invention, spherical muffler.
Reference numeral table
1st, 1' extinguishing devices, fire-smothering gear
2 mufflers, the muffler of frequency-selecting
3 tube ends
10 contiguous blocks, T-piece
11 fighting nozzles
12 outflow openings
13 pipe closures
14 nuts, acorn nut
15 Pipe Flanges, flange
16 diffusers drill
17 pipeline sections
18 cone closures
21 outer covers, shroud
22 noise reduction layers, melamine resin foam, foamed material
22' retaining elements, the layer of elasticity, sleeve
23 orifice plates
A diffusers axis, fire extinguishing tube axis
AB absorbers room
AR overall diameters, diffuser overall diameter
The overall diameter of AS mufflers
ASP absorption spectrums
B bore dias（Blendendurchmesser）
D is covered
DB decibels
DL diffuser lengths
EIN supplies, entrance
F frequencies, audio frequency
Hz hertz
Inside IN pipes, pipe inner space
IR interior diameters, diffuser interior diameter
The interior diameter of IS mufflers
The length of L outflow openings
LpkNoise level, noise level
M covers thickness, shroud thickness,
MA minimum ranges
M1 is to M3 maximums
OF pipes outlet, outlet opening
Q1 diffuser tube cross-sectional areas
Q2 intermediate space cross-sectional areas
The distance of RA radial directions
The diameter of RD radial directions
The SA jet streams direction of propagation, the direction of propagation
SL silencer lengths
S1 is to S3 frequency spectrums
TR funnels
UM deflecting elements
UB exceeds length
ZS intermediate spaces
α sound absorption degree.
Embodiment
Fig. 1 shows the fighting nozzle component 1' of fighting nozzle 11 according to the state of the art, having tubulose, the sprayer for extinguishing fire
Mouth has the outflow opening 12 of the slit-shaped along fighting nozzle extension.
Shown fighting nozzle component 1' exemplarily has two such fighting nozzles 11, only described two to go out
A fighting nozzle in fire-fighting mouth is illustrated in more detail.Two fighting nozzles 11 are by acorn nut 14 and common contiguous block
10 connections, the contiguous block are constructed in the form of T-piece.Contiguous block 10 is tightened on tube end 3 in itself, the tube end from
The lid D in space to be put out a fire stretches out.The pipe being connected with tube end 3 is the intake line for extinguishing chemical, and the extinguishing chemical is going out
It is supplied in the case of fire from foamite container.B shows bore dia.
The principle of work and power for the fighting nozzle 11 that this known, sound is lowered is based on fire-suppressant gas flowing or extinguishing chemical
The expansion of the two-stage of flowing.Orifice plate in the inlet of contiguous block 10（Blende）The resistance of hydraulic pressure is determined, also, it is therefore true
The flow capacity of two fighting nozzles 11 is determined.Thus, pipeline pressure is considerably reduced and is reduced to nozzle interior
Pressure.In this first expansion, the dominant contribution of acoustic energy has been released, wherein, associated expanded noise is retained in
Within fighting nozzle 11.Second expansion corresponds to the pressure of substantially smaller together with the reduction of pressure to the environmental pressure of nozzle interior
Drop.
Known, tubulose fighting nozzle 11 has along pipe axis, as outflow opening 12, narrow slit.
In the example of present Figure, extinguishing chemical comes out from the paper plane of attached drawing.Fighting nozzle 11 is especially so constructed so that fire extinguishing
Agent jet stream SA（Referring to Fig. 2）Cross section be at least very narrow in one direction, that is to say, that it is extinguishing chemical, very flat
Flat jet stream outflows.Thus, noteworthy flowing vortex, the flowing vortex energy can not be formed in free jet stream
It is enough that sound wave is radiated for the frequency of acoustics.In particular, the cross section of extinguishing chemical jet stream is in one direction very narrow,
On another direction but it is to elongate（langgezogen）.Such, flat jet shape can pass through institute particularly well
Description, geometry is generated.With " loud " form of nozzle so far
On the contrary, the approximate rotational symmetry of form of nozzle discharge, flowed by the gas of relatively large drilling, the drilling has 5
To the diameter of 10mm, flat gas jet or liquid jet have the advantage that：Flowing vortex, institute are occurred without wherein
State flowing vortex and radiate in the frequency range more than 10kHz, being gone out by the hearing detection of the mankind, acoustics frequency.
In addition, IN represents pipe inner space, the pipe inner space is irrigated in the case of fire extinguishing with extinguishing chemical.AR is represented
Overall diameter, also, DL represent fighting nozzle 11 or shown fire extinguishing tube, axial total length.For overall diameter AR
, typical value be such as 25mm, 30mm or 35mm.Be such as 25cm for axial total length DL, typical value,
30cm or 35cm.In addition, the fighting nozzle 11 of tubulose utilizes the pipe closure 13 by cap in the form of to seal in axial end.
Fig. 2 show by Fig. 1 it is shown it is fighting nozzle 11, along the transversal of hatching II-II there
Face.In this view, on the one hand, the pipe longitudinal axis A and jet stream direction of propagation SA of extinguishing chemical are drawn, the extinguishing chemical
Radially discharged by outflow opening 12.
Fig. 3 show it is traditional, " loud " fighting nozzle, be lowered according to the sound of 2012/136468 A2 of WO
The acoustical frequency spectrum S1 of the fighting nozzle component of noise reduction fighting nozzle and according to the present invention to S3, and, according to this hair
Change procedure ASP sound absorption degree α, depending on frequency of attractable layer used in bright fighting nozzle component.
LpkExpression utilizes third octave（Oktave）The noise level of assessment, has the unit dB for decibel.Acoustics
Frequency spectrum S1 to S3 is logarithmically drawn on audio frequency f.M1 to M3 shows frequency spectrum S1 to S3, corresponding maximum.Shown
Chart in, the change procedure ASP of the sound absorption degree α of exemplary noise reduction layer is drawn out with being attached, and the noise reduction layer is by three
Cymel foam is made.
Detected in e measurement technology, the first acoustical frequency spectrum S1 is from " loudly " fighting nozzle, as it is in beginning institute
Shown in Fig. 1 of 2012/136468 A2 of WO of description.It can identify, reach to 110dB, maximum sound
Level value.So high value is painful for the hearing of people.In addition show, hard disk is wrong in these values
Ground works.
Second acoustical frequency spectrum S2 derives from what is be lowered according to the sound of the embodiment in 2012/136468 A2 of WO
Fighting nozzle, the fighting nozzle have multiple drillings, and the drilling has the diameter of 0.5mm, wherein, it is described to drill along straight
Line is in turn arranged with the distance of 5mm.Compared with previous frequency spectrum S2, universal lower noise level, the noise are shown
Level has the maximum M2 for reducing 20dB.Meanwhile, it is capable to identification, the first frequency spectrum S1 is moved into now to be exceeded
10kHz, high frequency.However, the noise level value is 20kHz in frequency spectrum S2, and, it will be apparent that ratio is in frequency spectrum S1
Higher.
3rd acoustical frequency spectrum S3 is from the according to the present invention, fighting nozzle of noise reduction.Such as previous in situation, equally
Fighting nozzle used.However, according to the present invention, there is melamine resin foam, tubulose muffler with about
10mm, radial direction distance is enclosed on this fighting nozzle（For this reason, referring to Fig. 4 below）.Be plotted in two frequency spectrum S2 and
The region of shade between S3 shows that the noise reduction layer of frequency-selecting effect is just aobvious in the scope of higher frequency and from about 250Hz
Increased, high, noise reduction effect is write, the noise reduction layer is made of melamine resin foam.According to used melamine
The thickness of polyimide resin foam, to 4000Hz from about 2500Hz, impinge upon the acoustic energy in noise reduction layer more than 95% is absorbed, institute
State acoustic energy and come from extinguishing chemical.The fighting nozzle being lowered by according to the present invention, sound and the noise reduction with the tuning of its frequency spectrum
The combination of device, it is advantageously that generation is up to 80dB, incomparable for uniform extensively, spectrum distribution radiation
（unerreicht）Low noise level, the fighting nozzle have outflow opening, very narrow geometry, the noise reduction
Utensil has the noise reduction layer of open cell type.
Fig. 4 shows the first embodiment of fighting nozzle component 1 according to the present invention, tubulose, noise reduction.
Compared to Figure 1, in the feelings being maintained at the minimum range RA of radial direction in scope exemplary, from 5mm to 10mm
Under condition, fighting nozzle 11 shown in phantom is surrounded by columnar, tubulose muffler 2 here.Remaining intermediate layer in this way
ZS, then, the extinguishing chemical radially discharged from outflow opening 12 can pass through intermediate layer ZS, also, further in axial direction
Discharged on direction with small flow resistance towards the outlet opening of the axial end portion in fighting nozzle 11.Preferably, muffler
The ratio of interior cross section Q2 and fire extinguishing tube cross section Q1 is in 2 to 10 scope, so as to lead to for outside, lower resistance extinguishing chemical
The remaining sufficiently large intermediate layer ZS in road.Reference numeral IS represents the interior diameter of noise reduction layer 22 herein.Exemplarily, muffler 2
, abut in axial end portion at contiguous block 10, in addition and limited by orifice plate 23.It is used to fasten in whole muffler 2
At contiguous block 10.
In order to mechanically protect the noise reduction layer 22 positioned at inner radial, shown muffler 2 is wrapped by hard plastic jacket 21
Enclose.Here, cover thickness M is in the scope of 1mm to 2mm, also, noise reduction layer 22, radial direction thickness RD is about 10mm to 15mm.
AS represents overall diameter, also, SL represents whole muffler 2, axial length.
Further according to the present invention, muffler 2 exceeds the fire extinguisher tube end, also, is so formed and be advantageously used in
Absorber room AB that other noise reduces, acoustics, the muffler has exceeds length in the scope of 10cm to 20cm
Spend UB（Axial impact position from the axial end portion or extinguishing chemical jet stream to the radially inner side of noise reduction layer 22 of outflow opening 12
Axial end portion to muffler 2 measures）.
Fig. 5 shows the view of the outlet opening OF of shown, noise reduction fighting nozzle component 1 in Fig. 4, the view
Along the direction of observation V drawn there.In this attached drawing, the structure of the muffler 2 of tubulose can be found out particularly well
With the ratio of two cross sections Q1, Q2.In current example, the ratio of Q2 and Q1 are about 3.3, also, are therefore sufficiently used for
Extinguishing chemical determines size, radial direction intermediate layer ZS, low flow resistance discharge by doing so.
Fig. 6 shows the second embodiment of fighting nozzle component 1 according to the present invention, tubulose, noise reduction, the fire extinguishing
Nozzle assembly has multiple, slit-shaped outflow openings 12.This can on the circumferencial direction relative to fire extinguishing tube 11 such quilt
Arrangement so that such as two extinguishing chemical jet streams are discharged laterally and away from each other, also, the 3rd extinguishing chemical jet stream is from corresponding
Outflow opening 12 in discharge downwards.Addedly, EIN represents the entrance opening of fire extinguishing tube 11, also, 15 represent flange or pipe
Flange, by the flange or Pipe Flange, fire extinguishing tube 11 can be fastened at contiguous block 10 by acorn nut 14.
Fig. 7 shows the 3rd embodiment of fighting nozzle component 1 according to the present invention, tubulose, noise reduction, the fire extinguishing
Nozzle assembly has the linear diffusers being made of multiple drillings 16 being arranged in order, small.Preferably, drilling has 0.5mm
Diameter.In addition, they are preferably in turn disposed in straight line with the distance of 5mm.According to the present invention, they are by so each other
Arrangement so that they are acted on the extinguishing chemical of outflow basically as coherent opening 12.
Multiple small openings 16 have the advantages that mechanical stability the and simple manufacture modification of extinguishing chemical pipe 11, open
Mouth 16 can be implemented in the manufacture modification as drilling.
Fig. 8 shows the 4th embodiment of fighting nozzle component 1 according to the present invention, tubulose, noise reduction, the fire extinguishing
Nozzle assembly has the deflecting element UM being used for by the extinguishing chemical of discharge towards lid D deflections.Then, the extinguishing chemical of discharge being capable of example
Such as it is deflected towards other noise reduction layer further to reduce sound, the other noise reduction layer is applied at lid D.
Fig. 9 shows the 5th embodiment of fighting nozzle component 1 according to the present invention, tubulose, noise reduction, the fire extinguishing
Nozzle sets, which have, is used for funnel TR derived from extinguishing chemical.
Figure 10 shows the sixth embodiment of fighting nozzle component 1 according to the present invention, tubulose, noise reduction, described to go out
Fire-fighting nozzle assembly has the muffler 2 of tripe shape.
Figure 11 shows the longitudinal section by known conical nozzle 11, and the known conical nozzle has the stream of arc-shaped
Go out opening 12, the alternative embodiment as the fighting nozzle 11 of tubulose.Shown conical nozzle 11 is first by pipeline section 17
Form, extend to the pipeline especially column.Conical nozzle 11, taper closure 18 is together with fighting nozzle equipment and its
Connection.Arc-shaped outflow opening 12 is in this closure centrum 18.Arrow for reference numeral SA shows to put out a fire again herein
The jet stream direction of propagation of agent, the extinguishing chemical are discharged from the outflow opening 12 of slit-shaped, and the outflow opening description is complete
Circular arc.Axially opposedly, the internal thread not further indicated that is built into conical nozzle 11 so that conical nozzle 11 passes through this
A little internal threads can be tightened on tube end 3, corresponding external screw thread, and the tube end is protruded from lid D.In the situation of fire extinguishing
Under, progress extinguishing chemical enters the supply in conical nozzle 11 by tube end 3.
In subsequent Figure 12 can in detail, it is better seen that discharge extinguishing chemical propagation.Here, Figure 12 shows root
According to the top view of the outflow opening 12 of the direction of observation XII drawn in fig. 11.
In this case, outflow opening 12 also has geometry, and the geometry is perpendicular to the direction of propagation
It is up to 3mm at least one extension.In current example, the model of the Fracture Width of outflow opening 12 in 0.5mm to 1mm
In enclosing.The outflow opening 12 formed in this way, extinguishing chemical are discharged in the form of boring jet stream from the nozzle.However, cone is penetrated
Stream is filled unlike for drilling, but extinguishing chemical is projected as just flat cone cover.Thus, the drop of noise level
It is low to be ensured that.
Figure 13 shows the top view with the conical nozzle 11 along the multiple small drillings 16 of circular arc.
Figure 13 shows scheme outflow opening 12, substituting for conical nozzle 11.Here, outflow opening 12 is again
It is not designed continuously, but either drill the opening with multiple small openings 16 or common produce of drilling is flowed out
Opening 12.This outflow opening 12 is disposed on circular arc again herein, and the circular arc is in conical nozzle 11, taper end 18
Place.
Figure 14 shows there is such conical nozzle 11, fighting nozzle component 1 according to the present invention, noise reduction first
Embodiment.
Compared with Figure 11, in the case where minimum range MA being maintained in scope exemplary, from 10mm to 20mm,
Conical nozzle 11 now shown in phantom is surrounded by columnar, tubulose muffler 2.Substantially, muffler 2 has axial
Minimum length and so axially arranged so that the extinguishing chemical of discharge on the SA of the jet stream direction of propagation fully and with
Impinge upon on the inner side of noise reduction layer 22 minimum range MA.Reference numeral IS represents the interior diameter of noise reduction layer 22.It is so surveyed
Amount so that muffler 2 can be inserted on the columnar pipeline section 17 of conical nozzle 11.Here, noise reduction layer 22, radial direction inner side is not
Abut in columnar pipeline section 17, radial direction outside with must flushing.The inner side of radial direction also can be spaced away, for example, directly
Most 20mm, radial direction distance.Since the main source that noise produces is the extinguishing chemical of discharge, in axial scope（Institute
State in scope, noise reduction layer 22 is abutted at columnar pipeline section 17）In, this noise reduction layer 22 is substituted by other materials, example
Such as, by by silicon, rubber（Gummi）Or the rubber in sleeve meaning（Kautschuk）Manufactured, elastic layer 22'.
Muffler 2, limited again by by orifice plate 23 with axially opposed outlet opening OF end, muffler 2.It can
It is arranged for whole muffler 2 being fastened at tube end 3 or at lid 4.
Shown muffler 2 is surrounded by hard plastic jacket 21 again, mechanically to protect the noise reduction in inner radial
Layer 22.Here, cover thickness M is in the scope of 1mm to 2mm, also, noise reduction layer 22, radial direction thickness RD be about 10mm extremely
15mm.AS represents overall diameter, also, SL represents whole muffler 2, axial length.
In current example, muffler 2 is protruded with axial beyond length UB, 22 from extinguishing chemical jet stream to noise reduction layer
Impingement position on radially inner side, axial to muffler 2, the axial end in the scope of outlet opening OF measures.
Absorber room AB formed from this axial position, acoustics be used for according to the present invention, further reduce sound.
The extinguishing chemical discharged on the direction for the arrow that there is drawn at the outlet opening OF noise level acutely to reduce there
Discharge.
Figure 15 show to have the muffler 2 of T-shaped, noise reduction conical nozzle 11 second embodiment.In such case
Under, extinguishing chemical passes through two outlet opening OF freedoms of entry spaces.Certainly, outlet opening OF in addition can also be set, example
Such as, in the case of criss-cross muffler 2, the muffler have in the paper plane (Blattebene) of Figure 15,
Two additional outlet opening OF（Do not draw out）.
Finally, Figure 16 shows the 3rd embodiment with according to the present invention, spherical muffler 2.In such case
Under, conical nozzle 11 is by completely around except outlet opening OF, the outlet opening radial skew is in direction towards lid D's
Direction and it is slotted in muffler 2.The extinguishing chemical discharged there can for example be hit towards other noise reduction layer and into
One step reduces sound, and the other noise reduction layer is applied at lid D.
Claims (15)
1. for extinguishing device, noise reduction the fighting nozzle component of construction and installation, the fighting nozzle component has at least one
A fighting nozzle（11）And for corresponding fighting nozzle（11）Muffler（2）, the fighting nozzle is for extinguishing chemical
Outflow, wherein, corresponding fighting nozzle（11）With at least one outflow opening with geometry（12）, it is described several
What shape is up to 3mm at least one extension perpendicular to the direction of propagation, wherein, corresponding muffler（2）With frequency
Rate selectivity noise reduction layer（22）, the noise reduction layer is arranged such that from corresponding outflow opening（12）Discharge is gone out
Fiery agent jet stream is in the propagation direction（SA）Impinge upon the noise reduction layer（22）On, and wherein, the noise reduction layer（22）With from
The audio frequency of 125Hz（f）Play elevated sound absorption degree（α）.
2. the fighting nozzle component of noise reduction according to claim 1, wherein, the noise reduction layer（22）With sound absorption degree
（α）, the sound absorption degree（α）From the sound absorption angle value increase for being up to 0.1 from the frequency values of 125Hz, also, from
The frequency values of 5000Hz, the sound absorption angle value for especially reaching minimum 0.9 from the frequency values of 1000Hz.
3. the fighting nozzle component of the noise reduction according to claims 1 or 2, wherein, corresponding fighting nozzle（11）
With at least one outflow opening with geometry（12）, the geometry perpendicular to the direction of propagation at least
It is up to 1mm in one extension, is especially up to 0.5mm.
4. the fighting nozzle component of noise reduction according to any one of the preceding claims, wherein, the noise reduction layer（22）It is
The foam of perforate, especially melamine resin foam, or mineral fibre layer.
5. the fighting nozzle component of noise reduction according to any one of the preceding claims, wherein, the noise reduction layer（22）Tool
There is layer thickness in the scope of 5mm to 50mm, especially in the scope of 10mm to 30mm.
6. the fighting nozzle component of noise reduction according to any one of the preceding claims, wherein, the muffler（2）On
The acoustic damping characteristic value of its acoustics is by such and fighting nozzle（11）Mutually coordinate so that noise level（Lpk）In fire extinguishing procedure
Period is no more than maximum noise level value（M3）, the maximum noise level value is 85dB, especially 80dB, the fire extinguishing
Nozzle has its corresponding outflow opening（12）.
7. the fighting nozzle component of noise reduction according to any one of the preceding claims, wherein, set and go out for what is put out a fire
Fiery agent is inert gas, especially nitrogen, argon gas or carbon dioxide, or chemistry extinguishing chemical, such as breathe out dragon, HFC227 or
Person Novec1230.
8. the fighting nozzle component of noise reduction according to any one of the preceding claims, wherein, in the fighting nozzle
（11）In corresponding outflow opening（12）It is so designed so that flat jet shape is presented in the extinguishing chemical of outflow.
9. the fighting nozzle component of noise reduction according to any one of the preceding claims, wherein, corresponding outflow is opened
Mouthful（12）With crack shape or slit-shaped geometry.
10. the fighting nozzle component of noise reduction according to any one of the preceding claims, wherein, corresponding outflow is opened
Mouthful（12）Extend along straight line or along camber line, more particularly along circular arc.
11. the fighting nozzle component of noise reduction according to any one of the preceding claims, wherein, corresponding outflow is opened
Mouthful（12）With multiple openings or drilling（20）, the opening or drilling so arrange each other so that they are substantially such as
With coherent opening（12）Act on the extinguishing chemical of outflow.
12. the fighting nozzle component of noise reduction according to claim 11, wherein, the opening or drilling（20）With most
The greatly diameter of 0.5mm.
13. the fighting nozzle component of noise reduction according to any one of the preceding claims, wherein, the fighting nozzle（11）
Diffuser or columnar conical nozzle are designed to, wherein corresponding muffler（2）It is muffler pipe, the noise reduction layer
（22）It is disposed at the inner side of the muffler pipe, wherein, the muffler pipe（2）So measured so that the noise reduction
Layer（22）The fighting nozzle is surrounded completely（11）Corresponding outflow opening（12）, and wherein, corresponding outflow is opened
Mouthful（12）With extremely opposed noise reduction layer（22）Minimum range（MA）, the minimum range in the scope of 5mm to 30mm, it is outstanding
It is in the scope of 10mm to 20mm.
14. the fighting nozzle component of noise reduction according to claim 13, wherein, the muffler pipe（2）With axial prominent
The pipe fitting gone out, from corresponding outflow opening（12）, risen in axial direction in exterior end until pipe outlet（OF）Measure,
The pipe fitting is constructed exceeds length with axial（UB）, the absorber room of acoustics（AB）, it is described beyond length in 5cm extremely
In the scope of 50cm, especially in the scope of 10cm to 20cm.
15. the fighting nozzle of inert gas-extinguishing device for being arranged on construction and installation（11）Place, frequency selectivity noise reduction
Material（22）Application, for reducing sound noise level during fire extinguishing procedure（Lpk）, wherein, the fighting nozzle（11）Tool
There is at least one outflow opening with geometry（12）, the geometry is at least one expansion perpendicular to the direction of propagation
It is up to 3mm in exhibition portion, is especially up to 0.5mm so that flowing vortex substantially radiates the speed of acoustics, the rotation
Turning frequency in from 125Hz, higher frequency scope, the flowing vortex is appeared in the extinguishing chemical jet stream of discharge, wherein,
The muffler（2）It is arranged such that from corresponding outflow opening（12）The extinguishing chemical jet stream of middle discharge is being propagated
Direction（SA）Above and with minimum range（MA）Impinge upon noise reduction layer（22）On, and wherein, the noise reduction layer（22）With from
The audio frequency of 125Hz（f）Play elevated sound absorption degree（α）.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16194731.2A EP3311886A1 (en) | 2016-10-20 | 2016-10-20 | Muffled extinguishing nozzle assembly having a frequency selective noise dampening coating as well as suitable use |
| EP16194731.2 | 2016-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107961472A true CN107961472A (en) | 2018-04-27 |
Family
ID=57189834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710984189.6A Pending CN107961472A (en) | 2016-10-20 | 2017-10-20 | With frequency selectivity noise reduction layer, noise reduction fighting nozzle component and its application |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3311886A1 (en) |
| CN (1) | CN107961472A (en) |
| HK (1) | HK1254680A1 (en) |
| TW (1) | TWI733914B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113318366B (en) * | 2021-06-15 | 2022-04-01 | 浙江大学 | Fire extinguishing device for strengthening fine water mist and external sound field |
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| US4470549A (en) * | 1982-06-21 | 1984-09-11 | Fire Task Force Innovations, Inc. | Fire hose nozzle |
| CN1109196A (en) * | 1994-01-21 | 1995-09-27 | 美国3M公司 | Perforated acoustical attenuators |
| FR2857431A1 (en) * | 2003-07-09 | 2005-01-14 | Dbvib Insonorisation | Sound suppressor for use in pressurized gas outlet, has diffuser that is provided with longitudinal tubular wall situated remotely from annular layer to form annular space in which orifices are arranged |
| CN101515302A (en) * | 2008-05-16 | 2009-08-26 | 上海船舶运输科学研究所 | Acoustic design method for road noise barrier |
| CN102709025A (en) * | 2012-01-04 | 2012-10-03 | 吴江市东泰电力特种开关有限公司 | Low-noise transformer shell |
| WO2012136468A3 (en) * | 2011-04-08 | 2013-05-16 | Siemens Aktiengesellschaft | Reduced-noise extinguishing nozzles |
| CN104159642A (en) * | 2012-02-21 | 2014-11-19 | 株式会社高压 | Spray head for gaseous fire extinguishing equipment having silencing function |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3309127A1 (en) * | 1983-03-15 | 1984-09-20 | Basf Ag, 6700 Ludwigshafen | CELLED POLYURETHANE MOLDED BODIES, METHOD FOR THE PRODUCTION THEREOF BY THERMOPLASTIC DEFORMING OF POLYESTER-POLYURETHANE FOAMS AND THE USE THEREOF |
| JP5276630B2 (en) * | 2009-10-23 | 2013-08-28 | エア・ウォーター防災株式会社 | Gas fire extinguishing equipment |
| US9597537B2 (en) * | 2012-05-03 | 2017-03-21 | Koatsu Co., Ltd. | Injection head having silencing function for gas type fire extinguisher |
| GB2516489A (en) * | 2013-07-24 | 2015-01-28 | Geko Innovations Ltd | Acoustic Panel |
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2016
- 2016-10-20 EP EP16194731.2A patent/EP3311886A1/en not_active Withdrawn
-
2017
- 2017-10-06 TW TW106134473A patent/TWI733914B/en not_active IP Right Cessation
- 2017-10-20 CN CN201710984189.6A patent/CN107961472A/en active Pending
-
2018
- 2018-10-25 HK HK18113661.1A patent/HK1254680A1/en unknown
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| US4470549A (en) * | 1982-06-21 | 1984-09-11 | Fire Task Force Innovations, Inc. | Fire hose nozzle |
| CN1109196A (en) * | 1994-01-21 | 1995-09-27 | 美国3M公司 | Perforated acoustical attenuators |
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| CN101515302A (en) * | 2008-05-16 | 2009-08-26 | 上海船舶运输科学研究所 | Acoustic design method for road noise barrier |
| WO2012136468A3 (en) * | 2011-04-08 | 2013-05-16 | Siemens Aktiengesellschaft | Reduced-noise extinguishing nozzles |
| CN102709025A (en) * | 2012-01-04 | 2012-10-03 | 吴江市东泰电力特种开关有限公司 | Low-noise transformer shell |
| CN104159642A (en) * | 2012-02-21 | 2014-11-19 | 株式会社高压 | Spray head for gaseous fire extinguishing equipment having silencing function |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201815438A (en) | 2018-05-01 |
| HK1254680A1 (en) | 2019-07-26 |
| TWI733914B (en) | 2021-07-21 |
| EP3311886A1 (en) | 2018-04-25 |
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