CN206415252U - Jet pipe and fine mist spray head component - Google Patents
Jet pipe and fine mist spray head component Download PDFInfo
- Publication number
- CN206415252U CN206415252U CN201621156796.0U CN201621156796U CN206415252U CN 206415252 U CN206415252 U CN 206415252U CN 201621156796 U CN201621156796 U CN 201621156796U CN 206415252 U CN206415252 U CN 206415252U
- Authority
- CN
- China
- Prior art keywords
- jet pipe
- helicoid
- expanding groove
- inner expanding
- atomization
- Prior art date
- 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.)
- Expired - Fee Related
Links
Landscapes
- Nozzles (AREA)
Abstract
The utility model is related to a kind of jet pipe and fine mist spray head component, the jet pipe includes spout body, first connecting portion, second connecting portion of the spout body provided with atomization chamber and the two ends for being arranged at the atomization chamber, the side wall of the atomization chamber is provided with inlet opening and spiral inner expanding groove, and one end of the inner expanding groove connects with the inlet opening.The jet pipe can self-assembling formation be vortexed, strengthen turbulent water, liquid is uniformly mixed with bubble；The fine mist spray head component, can make full use of effervescent atomization principle, reduce mist droplet particle size, strengthen atomizing effect, while lifting atomization stability.
Description
Technical field
The utility model is related to atomizing spray technical field, more particularly to a kind of jet pipe and fine mist spray head component.
Background technology
According to China's fine water mist fire-extinguishing system technical specification (GB50898-2013), water mists refer in minimum design work
Make under pressure, the Dv0.5 formed in the plane below shower nozzle axis at 1 meter is ejected in through spout and is less than 200 μm, Dv0.99 is less than
400 μm of water smoke drop.Water Mist Fire Extinguishing Technique is a kind of for particular fields such as oils, steamer cabin, transformer room, computer floors
The high-effect fire-extinguishing technology of conjunction.Water mists are in fire extinguishing procedure, on the one hand by its mist droplet particle size is small, specific surface area is big, vaporization is latent
Hot big the features such as, undergone phase transition when meeting flame because heated, a large amount of heats absorbed around burning things which may cause a fire disaster；On the other hand, water mists
Constantly injection reduces radiant heat transfer of the flame to combustible around, while the fast vaporizing of droplet causes vapor in gas phase
Volume rapid expanding, by reducing oxygen concentration in burning things which may cause a fire disaster surrounding environment, makes flame because " asphyxia " is acted on and is extinguished.
At present, the fine mist spray head component of main flow mainly has：Impact type atomizer, pressure type atomizer and double fluid
Body atomizer etc..Wherein existing Double-fluid atomization nozzle can produce thinner droplet at low pressures, its spout phase
It is not easy to block to larger, but traditional Double-fluid atomization nozzle is present that air consumption is big, gas-liquid mixed is uneven, exit spray
The shortcomings of mist is unstable；There are water mists not by the way of external mix more than existing two-fluid fine mist spray head simultaneously
Stable shortcoming.
Utility model content
Based on this, it is necessary to provide a kind of jet pipe and fine mist spray head component；The jet pipe can extend the gas-liquid mixed time, increase
Strong turbulent water, makes gas-liquid mixed uniform；Fine mist spray head component can make full use of nozzle structure feature, play bubble shearing and
Fragmentation, strengthens atomizing effect, while lifting atomization stability.
Its technical scheme is as follows：
A kind of jet pipe, including spout body, the spout body is provided with atomization chamber and is arranged at the atomization chamber two ends
First connecting portion, second connecting portion, the side wall of the atomization chamber are provided with inlet opening and spiral inner expanding groove, the inner expanding groove
One end connect with the inlet opening.
Technical scheme is illustrated further below：
In one of the embodiments, the helical angle of the inner expanding groove is 30 °~45 °.
In one of the embodiments, the inner expanding groove includes the first helicoid and connect with first helicoid the
Two helicoids, first helicoid is set close to the inlet opening；In same frontal plane of projection, the spiral of first helicoid
Track is in circular arc, and the helical trajectory of second helicoid is oval.
In one of the embodiments, the anglec of rotation of first helicoid is less than or equal to 90 °；Or/and described
The anglec of rotation of two helicoids is more than or equal to 90 °.
In one of the embodiments, the depth capacity that second helicoid sets to the concave is with second helicoid
The increase of the anglec of rotation and be gradually reduced.
In one of the embodiments, the inner expanding groove sets to the concave and its cross section is trapezoidal or circular arc.
In one of the embodiments, the middle part of the atomization chamber is in cylinder, and the inlet opening includes and the atomization
Arc notch that the side wall of chamber is adapted and the connection breach connected with one end of the inner expanding groove.
In one of the embodiments, the spout body is provided with the water inlet body that is connected with water supply connector, it is described enter
Water pipe body is provided with the intake tunnel communicated with the inlet opening, the inwall phase of the inwall of the intake tunnel and the inner expanding groove
Cut.
In one of the embodiments, the atomization chamber is additionally provided with tapered end, and the tapered end is close to the described second connection
Portion sets and communicated with the nozzle.
In one of the embodiments, the tapered end is in truncated cone or billiard table shape.
In one of the embodiments, the angle of inclination of the tapered end is 15 °~30 °.
The utility model also provides a kind of fine mist spray head component, including above-mentioned jet pipe, in addition to air injection pipe and nozzle；
The outer wall of the air injection pipe is tightly connected by the first connecting portion with the jet pipe, and the week side of boss of the air injection pipe is provided with and institute
Multiple gas injection apertures that atomization chamber is communicated are stated, the gas injection aperture is set close to the other end of the inner expanding groove；The nozzle
Inwall is tightly connected by the second connecting portion with the jet pipe, and the nozzle is provided with the spray orifice communicated with the atomization chamber.
Technical scheme is illustrated further below：
In one of the embodiments, the air injection pipe is provided with the tapered portion being engaged with the tapered end.
In one of the embodiments, the week side of boss uniform intervals of multiple gas injection apertures along the air injection pipe are arranged to one
Row, the air injection pipe is arranged at intervals with multiple rows of gas injection aperture along its axis direction.
In one of the embodiments, the aperture of the gas injection aperture is 1.5~2mm.
In one of the embodiments, the air injection pipe is engaged to form annular chamber with the atomization chamber.
In one of the embodiments, the air injection pipe is provided with gas injection passage.
" first " described in above-mentioned the utility model, " second " do not represent specific quantity and order, are only used for name
The differentiation of title.
Above-mentioned the beneficial effects of the utility model：
Above-mentioned jet pipe, by setting inner expanding groove, is easy to form water stream channel, and then bootable current in front half section, increase
Water flow section is accumulated, and reduces flow rate of liquid, is reduced because of hydraulic loss caused by current disorder, is dropped in the second half section with inner expanding groove depth
It is low, strengthen turbulent water, bubble is well mixed with liquid.
Above-mentioned fine mist spray head component in use, liquid through inlet opening lateral incision to enter jet pipe in atomization chamber in, pass through
Spiral helicine inner expanding groove drainage, liquid self-assembling formation eddy flow and deceleration flow downward；The gas injection aperture for passing through air injection pipe when gas
To enter in the form of bubble in atomization chamber, the liquid with flowing downward meets, and is fully rotatable, mixes in atomization chamber, formation
Flow velocity is accelerated when uniform biphase gas and liquid flow passes through the tapered end of jet pipe lower end, and the spray orifice set on nozzle sprays, spray orifice,
Bubble expands suddenly because of pressure reduction, and shearing of the surrounding liquid because of bubble, fragmentation form water mists.The fine mist spray head
Component, can make full use of the effect shearing, crush of the bubble to drop, strengthen atomizing effect, while lifting atomization stability.
Brief description of the drawings
Fig. 1 is the structural representation of jet pipe described in the utility model；
Fig. 2 is the schematic diagram of fine mist spray head component described in the utility model；
Fig. 3 is the schematic top plan view of jet pipe described in the utility model；
Fig. 4 is the first half-sectional structure chart of jet pipe described in the utility model；
Fig. 5 is the second half-sectional structure chart of jet pipe described in the utility model；
Fig. 6 is the schematic diagram of nozzle described in the utility model.
Description of reference numerals：
100th, spout body, 110, atomization chamber, 112, inlet opening, 102, arc notch, 104, connection breach, 114, interior expand
Groove, 106, circular arc helical trajectory, 108, ellipse arc helical trajectory, 116, tapered end, 120, first connecting portion, 130, second
Connecting portion, 140, water inlet body, 142, intake tunnel, 200, air injection pipe, 210, gas injection aperture, 220, gas injection passage, 230, gradually
Contracting portion, 300, nozzle, 310, spray orifice, 320, prismoid section, 400, water supply connector, 500, seal.
Embodiment
It is below in conjunction with accompanying drawing and specifically real for the purpose of this utility model, technical scheme and advantage is more clearly understood
Mode is applied, the utility model is described in further detail.It should be appreciated that embodiment described herein
Only to explain the utility model, protection domain of the present utility model is not limited.
As shown in figure 1, a kind of jet pipe described in the utility model, including spout body 100, spout body 100 is provided with mist
Change chamber 110 and be arranged at first connecting portion 120, the second connecting portion 130 at the two ends of atomization chamber 110, the side wall of atomization chamber 110 is set
There are inlet opening 112 and spiral inner expanding groove 114, one end of inner expanding groove 114 connects with inlet opening 112.
Above-mentioned jet pipe, by setting inner expanding groove 114, is easy to form water stream channel in front half section, guides current, increase current
Sectional area, reduces flow rate of water flow, reduces because of hydraulic loss caused by current disorder, is dropped in the second half section with the depth of inner expanding groove 114
It is low, increase flow rate of water flow, strengthen turbulent water, bubble is well mixed with liquid.
As shown in Fig. 1 and 2, a kind of fine mist spray head component described in the utility model, including above-mentioned jet pipe, in addition to note
Tracheae 200 and nozzle 300；The outer wall of air injection pipe 200 is tightly connected by first connecting portion 120 with spout body 100, air injection pipe
200 the week side of boss is provided with the multiple gas injection apertures 210 communicated with atomization chamber 110, and gas injection aperture 210 is another close to inner expanding groove 114
End is set；The inwall of nozzle 300 is tightly connected by second connecting portion 130 with spout body 100, and nozzle 300 is provided with and atomization
The spray orifice 310 that chamber 110 is communicated.
As shown in Fig. 1 and 2, the fine mist spray head component in use, liquid through the lateral incision of inlet opening 112 to entering spout body
In atomization chamber 110 in 100, by the spiral helicine drainage of inner expanding groove 114, self-assembling formation eddy flow；When gas passes through air injection pipe
Gas injection aperture 210 is mixed in atomization chamber 110, rotated, shape to enter in the form of bubble in atomization chamber 110, be collided with liquid
Into biphase gas and liquid flow sprayed from the spray orifice 310 of nozzle 300, at spray orifice 310, bubble expand suddenly, surrounding liquid is because of bubble
Shearing, fragmentation, formed water mists.The fine mist spray head component, can make full use of nozzle structure feature, make gas-liquid mixed
Uniformly, using effervescent atomization mechanism, reduce mist droplet particle size, strengthen atomizing effect, while lifting atomization stability.
As shown in Fig. 1,3,4 and 5, in the present embodiment, liquid tangentially enters vertical jet pipe through horizontal water inflow passage 142
In body 100, self-assembling formation eddy flow simultaneously enters inner expanding groove 114, and the helical angle of inner expanding groove 114 is 30 °~45 °, thus bootable
The direction that current spiral declines, the pitch of inner expanding groove 114 preferably is 50mm.Further, inner expanding groove 114 includes the first spiral
Face 106 and the second helicoid 108 connected with the first helicoid 106, the first helicoid 106 are set close to inlet opening 112；Same
One frontal plane of projection, the helical trajectory of the first helicoid 106 is in circular arc, and the helical trajectory of the second helicoid 108 is oval, because
And current can be made to move to the relative place with gas injection aperture 210 along inner expanding groove 114, the He of the first helicoid 106 is utilized in the process
The rotating liquid injected by inlet opening 112 is drained to relative place, gas injection aperture with gas injection aperture 210 by the second helicoid 108
The bubble produced at 210 is diffused into formation two-fluid continuation rotation in rotating liquid and flowed downward, and two-fluid is after tapered end 116
Flow velocity increase, to spray orifice 310 at spray.Further, the anglec of rotation of inner expanding groove 114 is more than or equal to 180 °, is conducive to shape
Into rotated flowing liquid, it is preferred that the anglec of rotation of the first helicoid 106 is less than or equal to 90 °, according to flow rate of water flow, the first spiral
The smooth degree in face etc. is adjusted；Or/and second helicoid 108 the anglec of rotation be more than or equal to 90 °, according to current stream
Speed, smooth degree of the second helicoid 108 etc. are adjusted；Further, the maximum that the second helicoid 108 sets to the concave is deep
Degree is gradually reduced with the increase of the anglec of rotation of the second helicoid 108, is easy to make current from the smooth transition of the second helicoid 108
Flow into atomization chamber 110 and be sufficiently mixed in atomization chamber 110 with bubble.Further, inner expanding groove 114 sets to the concave and it
Cross section is trapezoidal or circular arc, makes more current along the helical flow of inner expanding groove 114, and then can drive remaining current spiral flow
It is dynamic.Further, the middle part of atomization chamber 110 is in cylinder, and inlet opening 112 includes what is be adapted with the side wall of atomization chamber 110
Arc notch 102 and the connection breach 104 connected with one end of inner expanding groove 114, thus be conducive to starting to draw at inlet opening 112
The current formation rotating vortex that water conservancy diversion enters, makes liquid be sufficiently mixed with gas；It is preferred that, spout body 100 is provided with and connect with water inlet
The first 400 water inlet bodys 140 being connected, water inlet body 140 is provided with the intake tunnel 142 communicated with inlet opening 112, intake tunnel
The inwall of 142 inwall and inner expanding groove 114 is tangent, it is thus achieved that the orderly drainage to entering the current in atomization chamber 110.
As shown in Fig. 1,2,4 and 5, in the present embodiment, atomization chamber 110 is additionally provided with tapered end 116, and tapered end 116 is close
Second connecting portion 130 sets and communicated with nozzle 300, thus two-phase flow through tapered end 116 further compression, accelerate after, from
The spray orifice 310 of nozzle 300 sprays, and bubble is because of swelling fracture in two-fluid, and drop forms water mists under shearing and fragmentation.
Further, air injection pipe 200 is engaged to form annular chamber with atomization chamber 110, and air injection pipe 200 is provided with and is engaged with tapered end 116
Tapered portion 230, by setting tapered portion 230 to be engaged with the tapered end 116 of atomization chamber 110, make two phase flow in annular chamber
Inwardly rotate into the inner chamber of nozzle 300, then sprayed from spray orifice 310, tapered portion 230 make fluid motion channel cross-section reduce and
Double-current rate of flow of fluid increase, increases, the water mists mist momentum of formation also increases through speed during spray orifice 310.The tapered end 116 is in circular cone
Platform shape or billiard table shape, preferably truncated cone, its angle of inclination are 15 °~30 °.
As shown in Fig. 2 in the present embodiment, the week side of boss uniform intervals of multiple gas injection apertures 210 along air injection pipe 200 are arranged to
One row, air injection pipe 200 is arranged at intervals with multiple rows of gas injection aperture 210 along its axis direction, it is ensured that gas is diffused into the form of bubbles
Enter current, and sprayed with water movement to spray orifice 310, obtain more preferable atomizing effect.The aperture of the gas injection aperture 210 is 1.5
~2mm, is easy to form bubble.
As shown in Fig. 2 and 6, in the present embodiment, the nozzle 300 is provided with prismoid section 320, and multiple spray orifices 310 are arranged at cone
The conical surface in platform portion 320 a, spray orifice 310 is arranged at the bottom surface of prismoid section 320, to obtain bigger and uniform spray area.
As shown in Fig. 2 in the present embodiment, the first connecting portion 120 is that female thread structure, second connecting portion 130 are outer
Helicitic texture, and be tightly connected respectively by seal 500 with air injection pipe 200, nozzle 300.
The fine mist spray head component flexibly can be applied in various fire extinguishing systems or fire-extinguishing apparatus, such as in common A
Class, B classes, C classes and electric information fire have good extinguishing effect.
The beneficial effects of the utility model：
(1) the utility model devises tangential intake tunnel, liquid is entered self-assembling formation eddy flow after shower nozzle outer tube, adds
The inner expanding groove of the helical structure designed in jet pipe, rotating fluid is realized under inner expanding groove guiding and mixed with the uniform of bubble.
The water mists field distribution so produced is more uniformly distributed, and stability is more preferable；
(2) the utility model is additionally arranged tapered end, and biphase gas and liquid flow is in tapered cavity because by the reduction of flow channel section
Flow velocity is accelerated, and when nozzle sprays, shear action strengthens the high speed two phase flow of formation caused by bubbles burst, the droplet of formation
Particle diameter is smaller, while because flow velocity increase causes the increase of mist momentum, water droplet penetrates flame ability and strengthened, will significantly be carried
High extinguishing effect；
(3) the utility model make use of the principle of effervescent atomization, and required gas pressure is 0.2~0.8MPa, much small
Pressure needed for pressure type atomizer, It greatly reduces the cost of system and improves the security of system；Together
When, the aperture that spray orifice of the present utility model is used is not susceptible to block for 1.5~2mm；In addition, compared to traditional two-fluid
Shower nozzle, shower nozzle of the present utility model has the characteristics of air consumption is small；
(4) aperture of gas injection aperture is 1.5~2mm, and less aperture ensure that gas in the form of bubble from air inlet pipe
It is uniform to spray, so as to play effervescent atomization effect.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of jet pipe, it is characterised in that including spout body, the spout body is provided with atomization chamber and is arranged at the atomization
First connecting portion, the second connecting portion at chamber two ends, the side wall of the atomization chamber are provided with inlet opening and spiral inner expanding groove, institute
The one end for stating inner expanding groove connects with the inlet opening.
2. jet pipe according to claim 1, it is characterised in that the helical angle of the inner expanding groove is 30 °~45 °.
3. jet pipe according to claim 1, it is characterised in that the inner expanding groove includes the first helicoid and with described first
The second helicoid that helicoid connects, first helicoid is set close to the inlet opening；In same frontal plane of projection, described
The helical trajectory of one helicoid is in circular arc, and the helical trajectory of second helicoid is oval.
4. jet pipe according to claim 3, it is characterised in that the depth capacity that second helicoid sets to the concave is with institute
State the increase of the anglec of rotation of the second helicoid and be gradually reduced.
5. jet pipe according to claim 1, it is characterised in that the inner expanding groove sets to the concave and its cross section is trapezoidal
Or circular arc.
6. jet pipe according to claim 1, it is characterised in that the middle part of the atomization chamber is in cylinder, the inlet opening
The arc notch being adapted including the side wall with the atomization chamber and the connection breach connected with one end of the inner expanding groove.
7. jet pipe according to claim 6, it is characterised in that the spout body is provided with entering for being connected with water supply connector
Water pipe body, the water inlet body is provided with the intake tunnel that is communicated with the inlet opening, the inwall of the intake tunnel with it is described interior
The inwall for expanding groove is tangent.
8. the jet pipe according to any one of claim 1 to 7, it is characterised in that the atomization chamber is additionally provided with tapered end, described
Tapered end sets close to the second connecting portion and communicated with nozzle.
9. a kind of fine mist spray head component, it is characterised in that including the jet pipe described in any one of claim 1 to 8, in addition to note
Tracheae and nozzle；The outer wall of the air injection pipe is tightly connected by the first connecting portion with the jet pipe, the air injection pipe
The week side of boss is provided with the multiple gas injection apertures communicated with the atomization chamber, and the gas injection aperture is set close to the other end of the inner expanding groove
Put；The inwall of the nozzle is tightly connected by the second connecting portion with the jet pipe, and the nozzle is provided with and the atomization
The spray orifice that chamber is communicated.
10. fine mist spray head component according to claim 9, it is characterised in that multiple gas injection apertures are along the note
The week side of boss uniform intervals of tracheae set in a row, and it is small that the air injection pipe is arranged at intervals with multiple rows of gas injection along its axis direction
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621156796.0U CN206415252U (en) | 2016-10-31 | 2016-10-31 | Jet pipe and fine mist spray head component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621156796.0U CN206415252U (en) | 2016-10-31 | 2016-10-31 | Jet pipe and fine mist spray head component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206415252U true CN206415252U (en) | 2017-08-18 |
Family
ID=59578569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621156796.0U Expired - Fee Related CN206415252U (en) | 2016-10-31 | 2016-10-31 | Jet pipe and fine mist spray head component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206415252U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112044002A (en) * | 2020-09-16 | 2020-12-08 | 四川建安伟业建筑工程有限公司 | Suspension type water smoke fire extinguishing and extinguishing system |
| CN112044003A (en) * | 2020-09-16 | 2020-12-08 | 四川建安伟业建筑工程有限公司 | Cable tunnel fire protection system |
| CN114951101A (en) * | 2022-05-23 | 2022-08-30 | 汪月利 | Spraying device for cleaning workpiece |
-
2016
- 2016-10-31 CN CN201621156796.0U patent/CN206415252U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112044002A (en) * | 2020-09-16 | 2020-12-08 | 四川建安伟业建筑工程有限公司 | Suspension type water smoke fire extinguishing and extinguishing system |
| CN112044003A (en) * | 2020-09-16 | 2020-12-08 | 四川建安伟业建筑工程有限公司 | Cable tunnel fire protection system |
| CN112044002B (en) * | 2020-09-16 | 2022-03-15 | 四川建安伟业建筑工程有限公司 | Suspension type water smoke fire extinguishing and extinguishing system |
| CN114951101A (en) * | 2022-05-23 | 2022-08-30 | 汪月利 | Spraying device for cleaning workpiece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106492383B (en) | Fine mist spray head component | |
| CN206415252U (en) | Jet pipe and fine mist spray head component | |
| CN103861753B (en) | Multistage atomizing gas-liquid two-phase heavy calibre mist nozzle | |
| CN105715292B (en) | A kind of multistage atomizing type two-phase flow water mist generating device of prevention underground coal fire | |
| RU2329873C2 (en) | Liquid sprayer | |
| CN107013242B (en) | A kind of mining multistage atomizing two-phase flow water mists generating device | |
| CN101491794A (en) | High-speed jet gas-liquid mixing-phase ejector | |
| CN201921369U (en) | Bubble atomization water mist sprayer | |
| CN103423215B (en) | Multiplex compound ejector | |
| CN106029236A (en) | Automatic high-speed rotary atomizing device, use thereof and fire extinguishing method by using same | |
| WO2013029476A1 (en) | Annular jet pump | |
| RU2532725C1 (en) | Centifugal swirl atomiser of kochstar type | |
| CN106216126A (en) | It is applicable to the effervescent atomizer of shear shinning non-Newtonian fluid | |
| CN102698396B (en) | Water mist sprayer | |
| CN105772265B (en) | A kind of reflection convection current of two-fluid declines mist dust suppression nozzle | |
| CN108889243A (en) | A kind of stream of double-cyclone three spray gun | |
| CN105971658A (en) | Bubble atomizing goaf gas-liquid two-phase flow fire prevention and extinguishing system | |
| CN210751035U (en) | Portable fire extinguisher nozzle suitable for high boiling point gas fire extinguishing agent | |
| CN105363589B (en) | A kind of internal-mixing supercritical fluid processes prepare nano-particle nozzle | |
| RU2536396C1 (en) | Centifugal swirl atomiser of kochstar type | |
| CN102202742A (en) | Method for producing a rotating hollow jet, and jet pipe unit for producing a hollow jet | |
| CN112774891A (en) | Double-fluid nozzle | |
| CN103446691A (en) | Micro water fog spray nozzle based on bubble atomization | |
| CN207605277U (en) | A kind of fire monitor head and the fire monitor using the fire monitor head | |
| RU2577653C1 (en) | Kochetov centrifugal vortex burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 Termination date: 20211031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |