CN110090382A - Charge type two-fluid fine mist spray head - Google Patents
Charge type two-fluid fine mist spray head Download PDFInfo
- Publication number
- CN110090382A CN110090382A CN201910369194.5A CN201910369194A CN110090382A CN 110090382 A CN110090382 A CN 110090382A CN 201910369194 A CN201910369194 A CN 201910369194A CN 110090382 A CN110090382 A CN 110090382A
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- Prior art keywords
- spray head
- nozzle
- fluid
- spiral
- fine mist
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
-
- 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
- A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water
Abstract
This disclosure relates to a kind of charge type two-fluid fine mist spray head, comprising: nozzle carrier comprising the spiral nozzle and spiral mixing chamber being connected；Connector, one end have annular groove, and the other end has air inlet and inlet opening, has the tubular structure being arranged along fluid flow direction in annular groove, and the mixing chamber in tubular structure is connected to air inlet, inlet opening and annular groove；Shell, one end are connect with nozzle boss, and the other end is connect with connector；Body core, side are tightly attached on the inner wall of shell, and the side is equipped with the arc groove for being connected to annular groove with spiral mixing chamber；And opposite polarity first electrode and second electrode, it is powered and is formed with the electric field of charge on the fluid band for spraying spiral nozzle between the latter two.The spray head of the disclosure can produce the water mists with charge, can play inhibiting effect to burning in terms of physics and chemistry two.
Description
Technical field
The disclosure belongs to fire-fighting fire-extinguishing equipment field, and in particular to charge type two-fluid fine mist spray head.
Background technique
With the progress of fire-fighting technique, Water Mist Fire Extinguishing Technique is since its fire-fighting efficiency is high, water consumption is few, and works as
Water mist has when ultra-fine horizontal and mitigates the characteristics such as flammable gas explosion and be more and more favored, to widen thin water
The use occasion of mist fire-fighting technique.And from the point of view of explosion suppression mechanism of putting out a fire, heat absorption cooling, resistance can be played when water mist is with flame interaction
The effect that disconnected radiant heat transfer, dilution and deoxygenation suffocate.So realizing preferably fire extinguishing suppression to develop Water Mist Fire Extinguishing Technique
Quick-fried ability is just particularly important the water mist processing that nozzle generates.But for single fluid is spraying, to reduce droplet grain
Diameter and improve inhibition burning and explosive effect, unique channel be promoted nozzle spray pressure, this requires hydraulic pipeline pressure resistance
It is higher, and the electromechanical equipments such as pressurization pressure stabilizing are also needed to configure, increase the unstability and operating cost of system.And two-fluid sprays
Head can use siphon principle, make full use of gas as atomizing power, and required atomizing pressure is small, than single under the conditions of uniform pressure
The atomizing effect of fluid spray is more preferable；In addition, two-fluid spray nozzle structure is simple, discharge rate adjustable range is wide, has good atomization
Performance, and inert gas can make the tearing of the drop at nozzle into smaller droplet and have good inerting asphyxia ability.Cause
This, the method datonation-inhibition using the gas-liquid two-phase of inert media as collaboration explosion-suppressing material can play centainly different fire types
Inhibiting effect.
Although existing two-fluid fine mist spray head can play certain atomizing, misty liquid droplets are being generated
When generally there is always several technical problems.For example, the diameter of fluid course affects the granularity point of atomized drop in nozzle
Cloth, but the reduction of flow diameter be easy to cause blocking etc. due to and Shortcomings in place of, therefore, it is impossible to existing double fluid
Body nozzle obtains required size distribution, and the fire extinguishing of current water mists mainly still relies on physics inhibiting effect, cannot
Reach preferably fire extinguishing purpose, and the mist droplet particle size range that pressure nozzle generates in terms of inhibiting chemical reaction well
It is wide and there are greater particle size is spraying, and the droplet being relatively large in diameter easily causes turbulent flow, improves burning velocity, leads to flame structure
Significant changes instead result in or enhance explosion.For these disadvantages, to further increase the inhibiting effect to fire, consideration pair
The water mists of generation carry out charged, that is, allow certain electricity and polar charge on water droplet band.Charged water mists, in addition to tool
Have other than the advantages of common water mists, can not only reinforce the extinguishing effect of common water mists from physics aspect, it can also be from change
It learns aspect and inhibiting effect well is played to combustion reaction, to realize highly efficient extinguishing effect.Correlative study channel syndrome
Real, mist droplet particle size is bigger, and required division limit charge-mass ratio is smaller, it is assumed that and the charge density after charged is uniform, then, two-fluid
In the droplet group that nozzle atomization is formed, the charge-mass ratio as needed for big drop breakup is smaller, will be easier to divide, forms smaller liquid
Drop, and charge-mass ratio needed for droplet is high, is not easy to divide, so that mist droplet particle size is gradually reduced, charged water mists make droplet
Particle diameter distribution is more tiny and uniform, and mist field more disperses and stablizes, and the friendship of charging voltage and nozzle arrangements and gas-liquid operating condition
Interaction is unobvious, can influence the droplet sizes of electrostatic charged spray relatively independently, this, which is one to effective control atomization quality, has
The feature of benefit.Meanwhile droplet the electric field force of electrically charged generation can enhance destruction to free radical and reaction particle and absorption is made
With, hinder and interrupt chain reaction, chemically aspect plays inhibiting effect to combustion reaction, and generated charged water mists with
Inert gas collective effect used in two-fluid is in target, it can be achieved that significantly more efficient fire-fighting purpose.Therefore, it is sprayed in conjunction with two-fluid
Mouth, which carries out charged processing, has certain advantage to the inhibition of burning and explosion, is the method for being worthy to be popularized and utilizing,
It is an important development direction of the following fire control technology development.
Summary of the invention
The disclosure provides a kind of charge type two-fluid fine mist spray head, and the fire extinguishing that can effectively solve current water mists is main
Or the problem of relying on physics inhibiting effect, preferably fire extinguishing purpose cannot be reached in terms of inhibiting chemical reaction well,
It solves the problems, such as to generate the deficiencies of small particle droplet results in blockage by reducing nozzle flow channel diameter, and solves larger grain
Diameter droplet easily causes the easy the problems such as of causing the danger exploded such as turbulent flow.
According to the one side of the embodiment of the present disclosure, a kind of charge type two-fluid fine mist spray head is provided, comprising:
Nozzle carrier comprising the spiral nozzle and spiral mixing chamber being connected；
Connector, one end have annular groove, and the other end has air inlet and inlet opening, tool in annular groove
There are the tubular structure along fluid flow direction setting, mixing chamber and air inlet, inlet opening and annular groove in tubular structure
Connection；
Shell, one end are connect with nozzle boss, and the other end is connect with connector；
Body core, side are tightly attached on the inner wall of shell, and the side is equipped with annular groove and spiral mixing chamber
The arc groove of connection；And
Opposite polarity first electrode and second electrode, be powered the fluid for being formed between the latter two and spraying spiral nozzle
Take the electric field of charge.
Optionally, air inlet and/or inlet opening are obliquely installed.
Optionally, together with air inlet crosses with the exit of inlet opening.
Optionally, there is the filter being close to tubular structure inner wall in mixing chamber.
Optionally, the width of the arc groove is gradually reduced along fluid flow direction.
Optionally, spiral nozzle has multiple, is distributed on the end and/or side of nozzle boss.
Optionally, spiral nozzle interior is a conical cavity, and conical cavity large port is as input end and spiral mixing chamber
Connection, conical cavity portlet as outlet end outwardly.
Optionally, there is the circular groove around conical cavity portlet on spiral nozzle.
The charge type two-fluid fine mist spray head of the disclosure is reliable and stable, economical and practical, easily operated, convenient to carry out, can
To generate the water mists for having charge, so that water mists partial size is smaller, distribution is more uniform, mist field more disperses and stablizes, tool
There is the features such as safety, energy conservation and high-effect fire-extinguishing, datonation-inhibition, there is good economic and social benefit.
The charge type two-fluid fine mist spray head of the disclosure also changes combustion and pours other than having the advantages that common water mists
The intermediate particulate moment product of area's active centre and the arranged distribution of free radical, can also increase water mists distribution the spread and
Uniformity, and using two-fluid as water fog generator, it ensures that its validity used in large space, realizes more preferable
Extinguishing effect.
In addition to this, due to using containing inert gas as datonation-inhibition the collaboration material and power source of putting out a fire, so that charge type
Two-fluid fine mist spray head have the function of better extinguishing effect and inhibit gas fuel burning explosion, be spray head and using its
Generate the innovation on charged water mists method and fire fighting mode.
Furthermore it is possible to change the electricity of water mists institute band by changing first electrode and second electrode voltage value and electric polarity
Amount and polarity, and can be adjusted according to the requirement of different fields of employment, it is very convenient.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a kind of structural schematic diagram of charge type two-fluid fine mist spray head shown according to an exemplary embodiment.
Fig. 2 is a kind of structural schematic diagram of connector shown according to an exemplary embodiment.
Fig. 3 is the air inlet of connector shown in Fig. 2 and the structural schematic diagram of inlet opening.
Fig. 4 is a kind of structural schematic diagram of shell shown according to an exemplary embodiment.
Fig. 5 is a kind of structural schematic diagram of body core shown according to an exemplary embodiment.
Fig. 6 is a kind of structural schematic diagram of arc groove on body core shown in Fig. 5.
Fig. 7 is the structural schematic diagram of spiral nozzle shown according to an exemplary embodiment and second electrode.
Fig. 8 is the structural schematic diagram of hexagon on spiral nozzle.
Fig. 9 is a kind of structural schematic diagram of spiral nozzle shown according to an exemplary embodiment.
Specific embodiment
Fig. 1 is a kind of structural schematic diagram of charge type two-fluid fine mist spray head shown according to an exemplary embodiment.
Such as Fig. 1, charge type two-fluid fine mist spray head includes nozzle carrier 1, shell 2, body core 3, connector 4, the 5, first electricity of spiral nozzle
Pole 6 and second electrode 7.
With reference to Fig. 1, Fig. 2, connector 4 can be made of the stainless steel material of high 25mm, diameter 38mm column structure.Connector
4 one ends have annular groove 18, in a kind of possible embodiment, annular groove 18 depth 15mm, outer diameter 34mm, and internal diameter
22mm.The settable M34 internal screw thread for connected with outer casing 2 of 18 side wall of annular groove.Have in the middle part of annular groove 18 along fluid stream
The tubular structure 19 of direction setting is moved, the cavity in tubular structure 19 is known as mixing chamber 26, settable in mixing chamber 26
The filter 11 being tightly attached on 19 inner wall of tubular structure prevents blocking fine mist spray head with the impurity crossed in drainage.Tubular structure
19 side is equipped with inclined hole 20, and mixing chamber 26 is connected to annular groove 18.Inclined hole 20 can promote the rotation of fluid, tiltedly
Hole 20 can be rectangular, can have multiple, can be uniformly distributed.
4 the other end of connector has the air inlet 16 being connected to mixing chamber 26 and inlet opening 17.Air inlet 16 and into
Settable M8 internal screw thread on 17 inner wall of water hole, for being separately connected tracheae and water pipe.Air inlet 16 and/or the inclination of inlet opening 17 are set
Set, inclination angle can be 10 degree, and the outlet of the two can first cross together after be connected to again with mixing chamber 26, reference can be made to Fig. 3.
Water and gas pass through air inlet 16 respectively and inlet opening 17 enters mixing chamber 26, enter ring from inclined hole 20 after tentatively mixing
Connected in star 18.
Referring to fig. 4, shell 2 can be used stainless steel material, outside the settable M38 for connecting nozzle carrier 1 in the side of one end
Screw thread, the matched M34 external screw thread 34 of M34 internal screw thread on the settable annular groove 18 with connector 4 in the side of the other end, makes
Obtaining shell 2 and the annular groove 18 of connector 4 can be together by a threaded connection.One end of shell 2 is provided with hole 31, and the other end is opened
There is hole 32, middle part is round table-like hole 33, and hole 31, hole 32, hole 33 are connected to.In a kind of possible embodiment, shell 2 is long
35mm, outer diameter 38mm, 31 diameter 30mm of hole, depth 10mm, 32 diameter 22mm of hole, depth 10mm, 33 depth 15mm of hole, outside diameter are
30mm, end diameter 22mm.
Referring to Fig. 5, body core 3 can be used stainless steel material and be made, and shape is and the matched frustum cone structure in hole 33.Such as Fig. 1, body
When core 3 is arranged in hole 33, side is tightly attached on the inner wall of shell 2.In a kind of possible embodiment, body core 3 is a height of
15mm, outside diameter 30mm, end diameter 25mm.
The side of body core 3 is equipped with arc groove, and the fluid-mixing in annular groove 18 can enter nozzle carrier 1 by arc groove
It is interior, and the width of arc groove is gradually reduced along fluid flow direction.The disclosure is not defined the quantity of arc groove.?
In a kind of possible embodiment, such as Fig. 6, two arc grooves 24,25 can be symmetrical arranged, 24,25 depth 2mm of arc groove, one end is wide
2mm, the wide 1.5mm of the other end.
The big end of body core 3 is connect with tubular structure 19, can be in the M22 internal screw thread of the big end center of body core 3 setting depth 5mm
Hole 21, it is corresponding, the external screw thread that connection can be matched with M22 internal thread hole 21 is equipped on tubular structure 19.
Nozzle carrier 1 can be the class rotary table component of stainless steel material, including cylindrical structure and on cylindrical structure
Frustum cone structure.In a kind of possible embodiment, nozzle carrier 1 high about 30mm, large end face diameter 50mm, small end face diameter
20mm.Such as Fig. 1, for the big end of nozzle carrier 1 and shell 2 are linked together, the large end face of nozzle carrier 1 can open up on shell 2
The M38 internal thread hole 23 of the matched depth 10mm of M38 external screw thread.23 bottom center of internal thread hole and settable end face diameter
The spherical groove of 22mm, depth 5mm, after shell 2 is connect with nozzle carrier 1, hole 32 and spherical groove in shell 2 constitute spiral mixing
Chamber 30.
Such as Fig. 1, the side of 1 frustum cone structure of nozzle carrier and/or small end face are equipped with nozzle bore 22, install snail on nozzle bore 22
Whirl spraying mouth 5, fluid are sprayed by spiral nozzle 5 respectively after continuing rotation mixing in rotation mixing chamber 30.With reference to Fig. 1, Fig. 7, circle
The side of platform structure can be evenly arranged 8 nozzle bores 22, and the center of small end face is disposed with a nozzle bore 22.Nozzle bore
22 can be the M10 internal thread hole of deep 10mm, corresponding, have and the matched outer spiral shell of the M10 internal thread hole on spiral nozzle 5
Line.Such as Fig. 8, the settable hexagon structure 27 in the end of spiral nozzle 5, spanner is clamped in hexagon structure can be by spiral nozzle
5 are tightened in nozzle bore 22.
It is a conical cavity 28 inside spiral nozzle 5,28 large port of conical cavity is as fluid-mixing import with reference to Fig. 9
End be connected to spiral mixing chamber 30,28 portlet of conical cavity as fluid outlet outwardly.Have on mixing nozzle 5 around cone
The circular groove 29 of 28 portlet of shape cavity, in a kind of possible embodiment, circular groove 29 deep about 0.8mm, diameter
3mm。
The cyclic structure that first electrode 6 can be constituted for wire, mountable on shell 2, there are two with for tool on shell 2
The electrode contact 8 of one electrode 6 connection.Alternatively, first electrode 6 is also mountable on nozzle carrier 1 or connector 4.Second
Electrode 7 can also be the cyclic structure being made of wire, and relative to first electrode 6, second electrode 7 is closer to spiral nozzle 5, and
Two electrodes 7 can pocket in being located at spiral nozzle 5 inside cricoid second electrode 7, such second electricity
Pole 7 will not stop spraying for water mists.The outer rim two sides of 1 large end face of nozzle carrier are distributed with one and connect with second electrode 7
Electrode contact 9.The disclosure is not to the shape of the wire cross section for the first electrode 6 and second electrode 7 for constituting cyclic structure
It is defined with size, in a kind of possible embodiment, wire diameter can be 3mm~12mm.Fluid is by the
When the electric field region formed between one electrode 6 and second electrode 7, since electrostatic induction can take charge, charged thin water is formed
Mist.When in use, electrode contact 8 connects positive pole, and electrode contact 9 connects power cathode or electrode contact 8 connects power supply
Cathode, electrode contact 9 connect positive pole.Changed by changing voltage value and the electric polarity of electrode contact 8 and electrode contact 9
The electricity and polarity of water mists institute band, and can be adjusted according to the requirement of different fields of employment, it is very convenient.
In order to ensure the safety used, first electrode 6 and second electrode 7 is avoided to be exposed to outer, the upper tool of two electrodes
There is insulating protective layer.Used conducting wire 14 is the flame-retardant wire of high-voltage isulation, and it is close that conducting wire 14 is all made of insulation rubber sleeve 12
Envelope, it is ensured that conducting wire 14 will not leak electricity and penetrate into steam.Flame-resistant insulation material is respectively arranged on electrode contact 8 and electrode contact 9 to be made
Lid 10, it is ensured that connector will not leak electricity and penetrate into steam.
The working principle of disclosure charge type two-fluid fine mist spray head is as follows: water and gas pass through air inlet 16 respectively
Enter mixing chamber 26 with inlet opening 17, the bubble in gas-liquid mixed stream is compressed under the action of certain pressure, becomes several
Tiny bubble.Two-fluid containing tiny bubble flows into annular recess 18 after mixing chamber 26 tentatively premix, then passes through
Arc groove 24,25 on body core 3 flows into spiral mixing chamber 30.Fluid is when by arc groove 24,25, by a centripetal masterpiece
With, while the centrifugal force effect generated again by rotation, so that the tiny bubble in two-fluid is evenly distributed in water flow,
Form uniform two-phase mixtures fluid.When such gas-liquid mixed stream is sprayed from spiral nozzle 5, compressed tiny bubble will
Rapid expanding blasting forms subtle water fog particle so that the water jet sprayed is crushed rapidly.And sprayed by spiral nozzle 5
Water mists are when the electric field region by being formed between first electrode 6 and second electrode 7, since electrostatic induction takes charge,
Charged water mists are formed, and since mist droplet particle size is bigger, required division limit charge-mass ratio is smaller, it is assumed that the charge after charged is close
Degree is uniform, then, charge-mass ratio needed for larger drop breakup is smaller in the droplet particle swarm that the atomization of spiral nozzle 5 is formed, and will more hold
Easily division, forms smaller droplet, and the droplet with like charges also can more disperse under the active force of mutual exclusion and uniformly.
In fire extinguishing, start high-voltage DC power supply, to two electrodes of the charge type two-fluid fine mist spray head of the disclosure
6,7 are passed through opposite polarity electric current, while opening spray head and being sprayed, nozzle spray water mists by first electrode 6 with
When the electric field region formed between second electrode 7, due to electrostatic induction, charge is taken, forms charged water mists.Compared to existing
The water mist for having the relevant technologies spray head to spray, these water mists drip particle diameter distribution more fine uniform, and mist field more disperses and stablizes,
And flame plume is passed through with higher speed, flame root is reached, heat is absorbed and gasifies rapidly, reduce the temperature of combustible
Degree inhibits the pyrolysis of combustible, interrupts pyric chain, and with inert gas collective effect used in two-fluid in target, real
Existing significantly more efficient fire-fighting purpose.
Claims (8)
1. a kind of charge type two-fluid fine mist spray head characterized by comprising
Nozzle carrier (1) comprising the spiral nozzle (5) and spiral mixing chamber (30) being connected；
Connector (4), one end have annular groove (18), and the other end has air inlet (16) and inlet opening (17),
There is the tubular structure (19) being arranged along fluid flow direction, the mixing chamber in tubular structure (19) in annular groove (18)
(26) it is connected to air inlet (16), inlet opening (17) and annular groove (18)；
Shell (2), one end are connect with nozzle boss (1), and the other end is connect with connector (4)；
Body core (3), side are tightly attached on the inner wall of shell (2), and the side is equipped with annular groove (18) and spiral
The arc groove of mixing chamber (30) connection；And
Opposite polarity first electrode (4) and second electrode (7), being powered between the latter two to being formed with sprays spiral nozzle (5)
Fluid band on charge electric field.
2. charge type two-fluid fine mist spray head according to claim 1, which is characterized in that air inlet (16) and/or into
Water hole (17) is obliquely installed.
3. charge type two-fluid fine mist spray head according to claim 2, which is characterized in that air inlet (16) and inlet opening
(17) exit crosses together.
4. charge type two-fluid fine mist spray head described in any one of claim 1 to 3, which is characterized in that mixing chamber
There is the filter (11) being close to tubular structure (19) inner wall in room (26).
5. charge type two-fluid fine mist spray head according to claim 1, which is characterized in that the width edge of the arc groove
Fluid flow direction is gradually reduced.
6. charge type two-fluid fine mist spray head according to claim 1, which is characterized in that spiral nozzle (5) has more
It is a, it is distributed on the end and/or side of nozzle boss (1).
7. charge type two-fluid fine mist spray head according to claim 1 or 6, which is characterized in that spiral nozzle (5) is internal
For a conical cavity (28), conical cavity (28) large port is connected to as input end with spiral mixing chamber (30), conical cavity
(28) portlet as outlet end outwardly.
8. charge type two-fluid fine mist spray head according to claim 7, which is characterized in that spiral nozzle has on (5)
Around the circular groove (29) of conical cavity (28) portlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369194.5A CN110090382A (en) | 2019-05-05 | 2019-05-05 | Charge type two-fluid fine mist spray head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369194.5A CN110090382A (en) | 2019-05-05 | 2019-05-05 | Charge type two-fluid fine mist spray head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110090382A true CN110090382A (en) | 2019-08-06 |
Family
ID=67446913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910369194.5A Pending CN110090382A (en) | 2019-05-05 | 2019-05-05 | Charge type two-fluid fine mist spray head |
Country Status (1)
| Country | Link |
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| CN (1) | CN110090382A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115006768A (en) * | 2022-06-15 | 2022-09-06 | 中国计量大学 | Bipolar charged water mist spray head and application thereof |
| CN116036770A (en) * | 2023-04-03 | 2023-05-02 | 河北广通路桥集团有限公司 | Composite dust removing equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203886079U (en) * | 2014-06-17 | 2014-10-22 | 河南理工大学 | Charged fine water mist generation spray head |
| CN104127980A (en) * | 2014-08-08 | 2014-11-05 | 中国科学技术大学 | Two-fluid water mist nozzle |
| RU172957U1 (en) * | 2017-04-26 | 2017-08-02 | Общество с ограниченной ответственностью "Торговый Дом РУСИНТЭК" (ООО "Торговый Дом РУСИНТЭК") | Fire extinguisher nozzle |
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2019
- 2019-05-05 CN CN201910369194.5A patent/CN110090382A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203886079U (en) * | 2014-06-17 | 2014-10-22 | 河南理工大学 | Charged fine water mist generation spray head |
| CN104127980A (en) * | 2014-08-08 | 2014-11-05 | 中国科学技术大学 | Two-fluid water mist nozzle |
| RU172957U1 (en) * | 2017-04-26 | 2017-08-02 | Общество с ограниченной ответственностью "Торговый Дом РУСИНТЭК" (ООО "Торговый Дом РУСИНТЭК") | Fire extinguisher nozzle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115006768A (en) * | 2022-06-15 | 2022-09-06 | 中国计量大学 | Bipolar charged water mist spray head and application thereof |
| CN116036770A (en) * | 2023-04-03 | 2023-05-02 | 河北广通路桥集团有限公司 | Composite dust removing equipment |
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Application publication date: 20190806 |