CN106994219A - Mesohigh fine mist spray head and its wind resistance application process with wind resistance - Google Patents
Mesohigh fine mist spray head and its wind resistance application process with wind resistance Download PDFInfo
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- CN106994219A CN106994219A CN201710257582.5A CN201710257582A CN106994219A CN 106994219 A CN106994219 A CN 106994219A CN 201710257582 A CN201710257582 A CN 201710257582A CN 106994219 A CN106994219 A CN 106994219A
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- 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
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
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Abstract
The invention discloses a kind of wind resistance application process of fine mist spray head and the mesohigh fine mist spray head with wind resistance, in the multiple mist-generating nozzles of axially and laterally setting of showerhead housing, nozzle uses direct projection and eddy flow mist-generating nozzle with 2 to 3 kinds of different atomization characteristics parameters；Wherein, in more than one axially arranged direct projection of nozzle housing and/or eddy flow mist-generating nozzle, in laterally disposed more than four direct projections and eddy flow mist-generating nozzle in uniform crossover arrangement of nozzle housing, make axially and laterally injection of the water mists respectively along nozzle housing, to ensure effective atomization cone angle of the fine mist spray head in the case where there is wind operating mode.The present invention is affected by wind when in use to be less than traditional single eddy type spray head; either calm or under having an operating mode of wind; water mists can be made to cover all fire protection domains; ensure good overall extinguishing property; lift it has application power under wind environment out of doors, is adapted to popularization and application out of doors.
Description
Technical field
The present invention relates to a kind of mesohigh fine mist spray head wind resistance application process, suitable outdoor has applies under wind environment,
The wind resistance of fine mist spray head can be lifted.
Background technology
Water Mist Fire Extinguishing Technique is a kind of emerging water fire control technology, and the technology is higher using fine mist spray head
Current are decomposed into diameter Dv under pressure99（Volume fraction is 99% particle diameter）Droplet less than 400 μm is put out a fire.Water is situated between
Matter, which carries out atomization, can increase the surface area of per unit volume liquid, improve heat absorption efficiency, and promotion and the interaction of flame,
Reach efficiently reduces hot feedback etc. to weaken combustion using vaporization heat absorption cooling combustible, volumetric expansion oxygen barrier and absorptive thermal radiation
Burn the effect of chemical reaction velocity.
Water Mist Fire Extinguishing Technique application in recent years enjoys fire to take precautions against natural calamities the attention of area research person, relatively broad now
Be applied between A classes of putting out a fire to save life and property, B classes, C classes and electrical fire, including library, archives, plant room, high and low voltage electric distribution, work
The place such as factory's control room, computer and communication machine room, cable interlayer and cable tunnel.The occurring mode of mesohigh water mists is usual
For two kinds, one kind is direct projection atomization, and another is swirling flow atomizing.Both atomizing types respectively have advantage and disadvantage.Wherein direct projection is atomized
Axial momentum it is larger, therefore wind loading rating is stronger, but atomizing effect is poor, causes extinguishing property weaker；The mist of swirling flow atomizing
Change effect more preferable compared with direct projection atomization, more preferably, but its axial kinetic energy is poor for extinguishing property, and wind loading rating is weak.Therefore, swirling flow atomizing
Although shower nozzle atomizing effect is good, extinguishing property is strong, is suitable only for indoor application.For outdoor fire, rotational flow atomized spray injector production
Raw water mists are small due to droplet particle, and axial momentum is not enough, is easily blown to four winds, causes effective atomization cone angle of shower nozzle notable
Reduction, makes part fire protection region lose protection, extinguishing property reduction, or even lose extinguishing effect.
Therefore, swirling flow atomizing fine mist spray head now is difficult to apply out of doors.CN20251628U passes through the knot to shower nozzle
Structure is improved, and reduces the loss of fluid momentum, is improved the axial kinetic energy of shower nozzle, is lifted the atomization of shower nozzle.But such shower nozzle axial direction
The room for promotion of kinetic energy or limited, wind resistance is still difficult to compared with direct projection shower nozzle.CN104667466A devises a kind of straight
The fine mist spray head of atomizer and vortex atomizing nozzle combination is penetrated, 1 emple hole is placed in the center of head body, 5 by it
Individual swirl nozzle is evenly arranged centered on emple hole, is put out using the strong penetration capacity of emple hole apart from shower nozzle farther out
Fire, the fire nearer apart from shower nozzle of being puted out a fire to save life and property using swirl flow nozzle.Such shower nozzle penetration capacity is strong, and the fiery position that is suitable for putting out a fire to save life and property is deeper
Fire, but this can not lift effective atomization cone angle under wind operating mode, therefore still can not solve the entirety of shower nozzle and resist
Wind sex chromosome mosaicism.
The content of the invention
The technical problem to be solved in the present invention be overcome the deficiencies in the prior art there is provided a kind of wind resistance it is good, fire extinguishing effect
Fine mist spray head wind resistance application process that is really good, can realizing the outdoor application of water mists in the range of mesohigh, is accordingly also provided
A kind of straight fine mist spray head of mesohigh with wind resistance.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
A kind of wind resistance application process of fine mist spray head, the fine mist spray head uses showerhead housing, and described
The axially and laterally surrounding of nozzle housing sets more than five mist-generating nozzles altogether, and the mist-generating nozzle, which is used, has 2 to 3 kinds
The direct projection mist-generating nozzle and eddy flow mist-generating nozzle of different atomization characteristics parameters；Wherein, in the axial direction of showerhead housing
More than one direct projection mist-generating nozzle and/or eddy flow mist-generating nozzle are set, set in the lateral surrounding of showerhead housing
More than the four direct projection mist-generating nozzles and eddy flow mist-generating nozzle in uniform crossover arrangement, make water mists respectively along nozzle housing
Axially and laterally injection, to ensure effective atomization cone angle of the fine mist spray head in the case where there is wind operating mode.
It is used as the further improvement of above-mentioned wind resistance application process：
It is preferred that, described atomization characteristics parameter includes atomization cone angle and discharge coefficient.
It is preferred that, the atomization cone angle of the eddy flow mist-generating nozzle is 35 ° -65 °, and flow coefficient k is 1.0-4.5；It is described
The atomization cone angle of direct projection mist-generating nozzle is 15 ° -35 °, and flow coefficient k is 1.0-4.0.
The present invention also provides a kind of mesohigh fine mist spray head with wind resistance, including showerhead housing, institute
State and multiple direct projection mist-generating nozzles and eddy flow water mists with different atomization characteristics parameters are provided with showerhead housing
Nozzle, wherein, the axially arranged direct projection mist-generating nozzle and/or eddy flow water mists described in more than one of showerhead housing
Nozzle, the lateral surrounding of showerhead housing set more than the four direct projection mist-generating nozzles arranged in uniform crossover with
Eddy flow mist-generating nozzle, the inner chambers of multiple the direct projection mist-generating nozzles and eddy flow mist-generating nozzle with showerhead housing
Inner chamber connection.
It is used as the further improvement of above-mentioned mesohigh fine mist spray head：
It is preferred that, the axially arranged mist-generating nozzle number of the showerhead housing is no more than 3, showerhead housing
Laterally disposed mist-generating nozzle number be no more than 14.
It is preferred that, the laterally disposed mist-generating nozzle number of the showerhead housing is 6-10.
It is preferred that, the total quantity of the direct projection mist-generating nozzle and eddy flow mist-generating nozzle is 7-10.
It is preferred that, the direct projection mist-generating nozzle and eddy flow mist-generating nozzle are removably connected to the lotus by screw thread
On fluffy formula nozzle housing.
It is preferred that, described atomization characteristics parameter includes atomization cone angle and discharge coefficient.
It is preferred that, the atomization cone angle of the eddy flow mist-generating nozzle is 35 ° -65 °, and flow coefficient k is 1.0-4.5；It is described
The atomization cone angle of direct projection mist-generating nozzle is 15 ° -35 °, and flow coefficient k is 1.0-4.0.
Compared with prior art, the advantage of the invention is that：
The mesohigh fine mist spray head of the present invention, by the way that the direct projection of different atomization characteristics parameters and eddy flow mist-generating nozzle is uniform
Arranged crosswise in nozzle housing on the side, when applying the present invention to outdoor operating mode, in the less situation of calm or wind speed
Under, the spraying that direct projection is produced with swirl nozzle sprays to the scene of a fire, plays fire extinguishing function, the water mists mist that wherein swirl nozzle is produced
Drip diameter small, fire-fighting efficiency is high, play main fire extinguishing function；The water droplet diameter that emple hole is produced is big, fire-fighting efficiency phase
To relatively low, secondary fire extinguishing function is played；In the case where wind speed is larger, the water mists that swirl nozzle is produced easily are blown to four winds, and put out a fire
Efficiency declines, and now plays secondary fire extinguishing function, and the water mists wind-engaging that emple hole is produced disturbs small, plays main fire extinguishing function,
It can guarantee that effective atomization cone angle of the whole shower nozzle in the case where there is wind operating mode does not change substantially, be obviously improved fine mist spray head
Wind resistance.Therefore it is affected by wind when the shower nozzle of the present invention is used to be less than traditional single eddy type spray head, either in nothing
Wind has under the operating mode of wind, water mists is covered all fire protection domains, it is ensured that good overall extinguishing property, carries
Rise it has application power under wind environment out of doors, is adapted to popularization and application out of doors.
Brief description of the drawings
Fig. 1 is the main structure diagram of the embodiment of the present invention 1.
Fig. 2 is the present invention looks up structural representation of the embodiment of the present invention 1.
Fig. 3 is the main structure diagram of the embodiment of the present invention 2.
Fig. 4 is the present invention looks up structural representation of the embodiment of the present invention 2.
Fig. 5 is the main structure diagram of the embodiment of the present invention 3.
Fig. 6 is the present invention looks up structural representation of the embodiment of the present invention 3.
Fig. 7 is the overlooking the structure diagram of the first eddy flow mist-generating nozzle in the present invention.
Fig. 8 is the main structure diagram of the first eddy flow mist-generating nozzle in the present invention.
Fig. 9 is the overlooking the structure diagram of the second eddy flow mist-generating nozzle in the present invention.
Figure 10 is the main structure diagram of the second eddy flow mist-generating nozzle in the present invention.
Figure 11 is the overlooking the structure diagram of direct projection mist-generating nozzle in the present invention.
Figure 12 is the main structure diagram of direct projection mist-generating nozzle in the present invention.
Marginal data：
1st, the first eddy flow mist-generating nozzle；2nd, the second eddy flow mist-generating nozzle；3rd, direct projection mist-generating nozzle；4th, nozzle housing；5、
Current track.
Embodiment
For the ease of understanding the present invention, more complete is made to the present invention below in conjunction with Figure of description and preferred embodiment
Face, meticulously describe, but protection scope of the present invention is not limited to embodiment in detail below.
As shown in figs 1 to 6, a kind of wind resistance application process of fine mist spray head of the invention, in showerhead housing
4 axially and laterally surrounding sets more than five mist-generating nozzles altogether, and the mist-generating nozzle includes having 2 to 3 kinds of different atomizations
The direct projection mist-generating nozzle 3 of characterisitic parameter（It is 15 ° -35 ° to be atomized cone angle, and flow coefficient k is 1.0-4.0）With the spray of eddy flow water mists
Mouth（It is 35 ° -65 ° to be atomized cone angle, and flow coefficient k is 1.0-4.5）；Wherein, in axially arranged one of showerhead housing 4
Above direct projection mist-generating nozzle 3 and/or eddy flow mist-generating nozzle, in showerhead housing 4 lateral surrounding set four with
The direct projection mist-generating nozzle 3 and eddy flow mist-generating nozzle of upper uniform crossover arrangement, make axial direction of the water mists respectively along nozzle housing
Sprayed with lateral, to ensure effective atomization cone angle of the fine mist spray head in the case where there is wind operating mode.
As shown in Fig. 1-Figure 12, the wind resistance application process of a kind of fine mist spray head of the invention and with wind resistance
Mesohigh fine mist spray head, the shower nozzle includes showerhead housing 4, and being provided with showerhead housing 4 multiple has
The direct projection mist-generating nozzle 3 of different atomization characteristics parameters（It is 15 ° -35 ° to be atomized cone angle, and flow coefficient k is 1.0-4.0）And eddy flow
Mist-generating nozzle（It is 35 ° -65 ° to be atomized cone angle, and flow coefficient k is 1.0-4.5）, wherein, the axial direction of showerhead housing 4 is set
More than one direct projection mist-generating nozzle 3 and/or eddy flow mist-generating nozzle are put, the lateral surrounding of showerhead housing 4 sets four
The direct projection mist-generating nozzle 3 and eddy flow mist-generating nozzle arranged more than individual in uniform crossover, multiple direct projection mist-generating nozzles 3 and rotation
Inner chamber of the inner chamber of mist-generating nozzle with showerhead housing 4 is flowed to connect.The present invention will be by that will have different atomization characteristics
The direct projection of parameter is arranged in nozzle housing on the side with eddy flow mist-generating nozzle uniform crossover, when applied to outdoor operating mode,
In the case of calm or wind speed is less, the spraying that direct projection is produced with swirl nozzle sprays to the scene of a fire, plays fire extinguishing function, wherein
The water droplet diameter that swirl nozzle is produced is small, and fire-fighting efficiency is high, plays main fire extinguishing function；The water mists that emple hole is produced
Fogdrop diameter is big, and fire-fighting efficiency is relatively low, plays secondary fire extinguishing function；And in the case where wind speed is larger, swirl nozzle is produced
Water mists be easily blown to four winds, fire-fighting efficiency declines, and now plays secondary fire extinguishing function, and the water mists wind-engaging that emple hole is produced
Interference is small, plays main fire extinguishing function, it can guarantee that effective atomization cone angle of the whole shower nozzle in the case where there is wind operating mode does not change substantially
Become, be obviously improved the wind resistance of the mesohigh fine mist spray head of the present invention.
Embodiment 1
Referring to Fig. 1 and Fig. 2, the mesohigh fine mist spray head of the present embodiment uses cloth on seedpod of the lotus type nozzle housing 4, nozzle housing 4
7 mist-generating nozzles are put, wherein 1 nozzle sprays along the axial direction of seedpod of the lotus type nozzle housing, remaining 6 nozzle is along seedpod of the lotus type shower nozzle
The lateral injection of housing, the mist-generating nozzle laterally sprayed is evenly distributed on the mist-generating nozzle surrounding of axially injection.Each thin water
Using being threadedly coupled between atomizing nozzle and nozzle housing, the inner chamber of nozzle housing is communicated with the inner chamber of each mist-generating nozzle.This reality
Apply in example, axially the mist-generating nozzle of injection uses the first eddy flow mist-generating nozzle 1（Shown in Fig. 7 and Fig. 8）, its be atomized cone angle be
55 °, flow coefficient k is 1.5.The mist-generating nozzle laterally sprayed uses the second eddy flow mist-generating nozzle 2（Shown in Fig. 9 and Figure 10）
With direct projection mist-generating nozzle 3（Shown in Figure 11 and Figure 12）Uniform crossover is arranged on nozzle housing 4, wherein the second eddy flow water mists
The atomization cone angle of nozzle 2 is 65 °, and flow coefficient k is 1.0；The atomization cone angle of direct projection mist-generating nozzle 3 is 30 °, flow coefficient k
For 1.0.In the present embodiment, the atomization cone angle of the first eddy flow mist-generating nozzle 1 and the second eddy flow mist-generating nozzle 2 is big, droplet is straight
Footpath is small, and fire-fighting efficiency is high.The fogdrop diameter of direct projection mist-generating nozzle 3 is big, but axial kinetic energy is big, therefore wind loading rating is strong, can
To ensure effective atomization cone angle of the whole shower nozzle in the case where there is wind operating mode, make fire protection region without dead angle, it is ensured that in of the invention
The overall extinguishing ability of high-pressure water mist spray head.
Embodiment 2
Referring to Fig. 3 and Fig. 4, the mesohigh fine mist spray head of the present embodiment uses cloth on seedpod of the lotus type nozzle housing 4, nozzle housing 4
7 mist-generating nozzles are put, wherein 1 nozzle sprays along the axial direction of seedpod of the lotus type nozzle housing, remaining 6 nozzle is along seedpod of the lotus type shower nozzle
The lateral injection of housing, the mist-generating nozzle laterally sprayed is evenly distributed on the mist-generating nozzle surrounding of axially injection.Each thin water
Using being threadedly coupled between atomizing nozzle and nozzle housing, the inner chamber of nozzle housing is communicated with the inner chamber of each mist-generating nozzle.This reality
Apply in example, axially the mist-generating nozzle of injection uses the first eddy flow mist-generating nozzle 1（Shown in Fig. 7 and Fig. 8）, its be atomized cone angle be
55 °, flow coefficient k is 1.5.The mist-generating nozzle laterally sprayed uses the first eddy flow mist-generating nozzle 1（Shown in Fig. 7 and Fig. 8）
With direct projection mist-generating nozzle 3（Shown in Figure 11 and Figure 12）Uniform crossover is arranged on nozzle housing 4, direct projection mist-generating nozzle 3
It is 30 ° to be atomized cone angle, and flow coefficient k is 1.0.The atomization cone angle of first eddy flow mist-generating nozzle 1 is big, fogdrop diameter is small, fire extinguishing
Efficiency high.The fogdrop diameter of direct projection mist-generating nozzle 3 is big, but axial kinetic energy is big, therefore wind loading rating is strong, it is ensured that having
Effective atomization cone angle of whole shower nozzle, makes fire protection region without dead angle under wind operating mode, it is ensured that mesohigh water mists of the invention
The overall extinguishing ability of shower nozzle.
Embodiment 3
Referring to Fig. 5 and Fig. 6, the mesohigh fine mist spray head of the present embodiment uses cloth on seedpod of the lotus type nozzle housing 4, nozzle housing 4
7 mist-generating nozzles are put, wherein 1 mist-generating nozzle sprays along the axial direction of seedpod of the lotus type nozzle housing, remaining 6 mist-generating nozzle
Along the lateral injection of seedpod of the lotus type nozzle housing, the mist-generating nozzle laterally sprayed is evenly distributed on the mist-generating nozzle of axially injection
Surrounding.Using being threadedly coupled between each mist-generating nozzle and nozzle housing, the inner chamber of nozzle housing is interior with each mist-generating nozzle
Chamber is communicated.Axially the mist-generating nozzle of injection uses direct projection mist-generating nozzle 3（Shown in Figure 11 and Figure 12）, atomization cone angle is 30 °,
Flow coefficient k is 1.0.The mist-generating nozzle laterally sprayed uses direct projection and two kinds of mist-generating nozzles of eddy flow equal on nozzle housing
Even arranged crosswise, is the first eddy flow mist-generating nozzle 1 respectively（Shown in Fig. 7 and Fig. 8）With direct projection mist-generating nozzle 3（Figure 11 and figure
Shown in 12）.Wherein the atomization cone angle of the first eddy flow mist-generating nozzle 1 is 55 °, and flow coefficient k is 1.5.First eddy flow water mists
The atomization cone angle of nozzle 1 is big, fogdrop diameter is small, and fire-fighting efficiency is high.The fogdrop diameter of direct projection mist-generating nozzle 3 is big, but axially
Kinetic energy is big, therefore wind loading rating is strong, it is ensured that effective atomization cone angle of whole shower nozzle in the case where there is wind operating mode, makes fire protection area
Domain is without dead angle, it is ensured that the overall extinguishing ability of mesohigh fine mist spray head of the invention.
In the various embodiments described above, eddy flow mist-generating nozzle and direct projection mist-generating nozzle are in just outer hexagon, and outer diameter D is φ
13mm.Its current track 5 is respectively spiral shape and cylinder.
It should be noted that specific embodiment is only the explanation and illustration to technical solution of the present invention, it should not be understood
Only make local change for the restriction to technical solution of the present invention, any use the present invention program content, this hair should be fallen into
In bright protection domain.
Claims (10)
1. a kind of wind resistance application process of fine mist spray head, it is characterised in that：The fine mist spray head uses showerhead
Housing, and more than five mist-generating nozzles, the mist-generating nozzle are set altogether in the axially and laterally surrounding of the nozzle housing
Using direct projection mist-generating nozzle and eddy flow mist-generating nozzle with 2 to 3 kinds of different atomization characteristics parameters；Wherein, in shower nozzle type
More than one axially arranged direct projection mist-generating nozzle and/or eddy flow mist-generating nozzle of nozzle housing, in showerhead housing
Lateral surrounding set more than four in uniform crossover arrangement direct projection mist-generating nozzles and eddy flow mist-generating nozzle, make water mists
Respectively along the axially and laterally injection of nozzle housing, to ensure effective atomization cone angle of the fine mist spray head in the case where there is wind operating mode.
2. wind resistance application process according to claim 1, it is characterised in that：Described atomization characteristics parameter includes atomization
Cone angle and discharge coefficient.
3. wind resistance application process according to claim 2, it is characterised in that：The atomizer (atomizing) cone of the eddy flow mist-generating nozzle
Angle is 35 ° -65 °, and flow coefficient k is 1.0-4.5；The atomization cone angle of the direct projection mist-generating nozzle is 15 ° -35 °, discharge coefficient
K is 1.0-4.0.
4. a kind of mesohigh fine mist spray head with wind resistance, including showerhead housing, it is characterised in that：The lotus
Multiple direct projection mist-generating nozzles and eddy flow mist-generating nozzle with different atomization characteristics parameters are provided with fluffy formula nozzle housing,
Wherein, the axially arranged direct projection mist-generating nozzle and/or eddy flow mist-generating nozzle described in more than one of showerhead housing,
The lateral surrounding of showerhead housing sets more than the four direct projection mist-generating nozzles and eddy flow arranged in uniform crossover
Mist-generating nozzle, the inner chamber of multiple the direct projection mist-generating nozzles and eddy flow mist-generating nozzle is interior with showerhead housing
Chamber is connected.
5. mesohigh fine mist spray head according to claim 4, it is characterised in that：The axial direction of the showerhead housing
The mist-generating nozzle number of setting is no more than 3, and the laterally disposed mist-generating nozzle number of showerhead housing is no more than 14.
6. mesohigh fine mist spray head according to claim 5, it is characterised in that：The showerhead housing it is lateral
The mist-generating nozzle number of setting is 6-10.
7. mesohigh fine mist spray head according to claim 6, it is characterised in that：The direct projection mist-generating nozzle and eddy flow
The total quantity of mist-generating nozzle is 7-10.
8. the mesohigh fine mist spray head according to claim any one of 4-7, it is characterised in that：The direct projection water mists spray
Mouth and eddy flow mist-generating nozzle are removably connected on the showerhead housing by screw thread.
9. the mesohigh fine mist spray head according to claim any one of 4-7, it is characterised in that：Described atomization characteristics ginseng
Number includes atomization cone angle and discharge coefficient.
10. mesohigh fine mist spray head according to claim 9, it is characterised in that：The mist of the eddy flow mist-generating nozzle
It is 35 ° -65 ° to change cone angle, and flow coefficient k is 1.0-4.5；The atomization cone angle of the direct projection mist-generating nozzle is 15 ° -35 °, flow
COEFFICIENT K is 1.0-4.0.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710257582.5A CN106994219A (en) | 2017-04-19 | 2017-04-19 | Mesohigh fine mist spray head and its wind resistance application process with wind resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710257582.5A CN106994219A (en) | 2017-04-19 | 2017-04-19 | Mesohigh fine mist spray head and its wind resistance application process with wind resistance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479441A (en) * | 2018-05-23 | 2018-09-04 | 江苏泰通新材料有限公司 | A kind of diesel emulsifying machine automatically supplied |
| CN109865234A (en) * | 2019-03-22 | 2019-06-11 | 上海工程技术大学 | A kind of automatic lifting/lowering support wind resistance high-pressure fine spray extinguisher |
| CN110613910A (en) * | 2019-08-16 | 2019-12-27 | 国网江苏省电力有限公司 | Water mist spray head |
| CN110975206A (en) * | 2019-12-06 | 2020-04-10 | 北京南瑞怡和环保科技有限公司 | Intelligent water mist fire extinguishing system |
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| CN109865234A (en) * | 2019-03-22 | 2019-06-11 | 上海工程技术大学 | A kind of automatic lifting/lowering support wind resistance high-pressure fine spray extinguisher |
| CN110613910A (en) * | 2019-08-16 | 2019-12-27 | 国网江苏省电力有限公司 | Water mist spray head |
| CN110975206A (en) * | 2019-12-06 | 2020-04-10 | 北京南瑞怡和环保科技有限公司 | Intelligent water mist fire extinguishing system |
| CN110975206B (en) * | 2019-12-06 | 2021-06-29 | 北京南瑞怡和环保科技有限公司 | Intelligent water mist fire extinguishing system |
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