CN204017236U - A kind of mesolow water spiral convergence atomizer - Google Patents
A kind of mesolow water spiral convergence atomizer Download PDFInfo
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- CN204017236U CN204017236U CN201420331743.2U CN201420331743U CN204017236U CN 204017236 U CN204017236 U CN 204017236U CN 201420331743 U CN201420331743 U CN 201420331743U CN 204017236 U CN204017236 U CN 204017236U
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Abstract
(1) a kind of mesolow water spiral convergence atomizer, comprise sprayer body, described sprayer body be provided with in (1) inside spin cone bar (3), external spiral cone bar (2), (10) sprayer body (1) water inlet place is also connected with shower nozzle push rod; (2) (3) inside spin cone bar be coaxially fixedly connected with external spiral cone bar, inside spin cone bar (3) outer surface helicla flute and external spiral cone bar (2) the helicla flute of inner surface match complete round mouth spiral convergence water channel of formation (4); External spiral cone bar (2) outer surface (1) inner surface is seamless applying with sprayer body, external spiral bore bar (2) the bottom surface of conical section and sprayer body (1) the bottom surface of the conical section of inner surface is in the same plane.Its advantage is: volume is little, lightweight, simple in structure, installation is simple.The speed that goes out saliva is fast, and with very large tangential velocity, is easy to increase range of atomized flow and atomization ability.The extinguishing device that the utility model carries from servo snakelike fire extinguishing Disaster Relief Robot above applicable to hydraulic pressure.
Description
Technical field
The utility model relates to hydraulic jet technical field, specifically a kind of mesolow hydraulic jet structure.
Background technology
Along with the fast development of modern science and technology, people have also more and more paid close attention to earth environment that we depend on for existence and natural resources in meeting basic living demand.In fire extinguishing procedure, do not stay the superior functions such as residue and vestiges, blow-off velocity are fast, the long term storage of chemically stable energy owing to breathing out dragon (Halon) extinguishing chemical, be once once widely used in eighties of last century.But it belongs to alkyl halide series extinguishing chemical, can destroy greatly the ozone layer in atmosphere, cause the various problems such as greenhouse effects, serious harm the mankind's health.Within 1987, united nations environment protection pact Montreal Protocol on Substances that Deplete the Ozone Layer requires various countries to stop using alkyl halide series extinguishing chemical, finds the substitute of halon fire agent.Fine water mist fire-extinguishing system, because of features such as it are free from environmental pollution, fire-fighting efficiency is high, water consumption is low, is regarded as the ideal substitute of halon fire agent, and each state is all in positive expansion research, and it has a extensive future.
Gong Yong army etc. has developed a kind of multiinjector combined high-voltage fine mist spray head (" combustion science and technology ", in December, 2010, the 16th the 6th phase of volume, " multiinjector combined type fine mist spray head oil tray fire-extinguishing test and analysis "), a kind of novel three tangential slot type high-pressure fine water mist nozzles are designed, and this nozzle is arranged on Combined nozzle body, form multiinjector fine mist spray head.Although this structure is simple, whole accelerated passage is too short, and namely acceleration is abundant not enough, tangential velocity is especially only provided, but has not accelerated, and is difficult to enough protection domains, only can realize atomization by increasing pressure.
Yang Lijun etc. have proposed to ensure the swirl atomizer method for designing of fogdrop diameter in " development of naval vessel high-pressure fine water mist fire-extinguishing system shower nozzle " (" Marine engineering ", total the 30th volume, the 3rd phase in 2008), and fine mist spray head has wider working range.But this structure speed in the axial direction is only provided by the current of lower pressure, so axial velocity is too small.
Zhou Hua etc. propose double atomization and make droplet more even in " development of New Water Mist Spray Bead for Fire Suppression " (" hydraulic pressure and pneumatic ", the 7th phase in 2006,62 pages), and atomization cone angle and spraying radius of protection obviously increase.But this structural disadvantages is only to have gone the disturbance to current by sudden change, and the tangential velocity of water outlet is inadequate, so in atomization, there are many restrictions.
Utility model content
The purpose of this utility model is the mesolow water spiral convergence atomizer that a kind of volume of design is little, easy for installation, atomization is good.
A kind of mesolow water spiral convergence atomizer, comprises sprayer body 1, is provided with inside spin cone bar 3, external spiral cone bar 2 in described sprayer body 1, and sprayer body 1 water inlet place is also connected with shower nozzle push rod 10; Inside spin cone bar 3 is coaxially fixedly connected with external spiral cone bar 2, and the helicla flute of inside spin cone bar 3 outer surfaces matches with the helicla flute of external spiral cone bar 2 inner surfaces and forms a complete round mouth spiral convergence water channel 4; External spiral cone bar 2 outer surfaces and sprayer body 1 inner surface are seamless applying, and the bottom surface of the bottom surface of external spiral cone bar 2 conical sections and the conical section of sprayer body 1 inner surface is in the same plane.
Described shower nozzle push rod 10 is connected with sprayer body 1 by two groups of nuts and bolts, shower nozzle push rod 10 is with two top pin, described two top pin snap in the groove on inside spin cone bar 3 and external spiral cone bar 2 column part bottom surfaces, neither move also and do not rotate around axis along axis for fixing inside spin cone bar 3 and external spiral cone bar 2.
Described inside spin cone bar 3 comprises column part and conical section, and inside spin cone bar 3 outer surfaces are provided with level and smooth round mouth double helix convergence tank from column part to conical section tip, and inside spin cone bar 3 centers offer central jet through hole 8.
Described external spiral cone bar 2 comprises column part and conical section, and external spiral cone bar 2 inner surfaces are provided with level and smooth round mouth double helix convergence tank from column part to conical section tip.
The water outlet of described sprayer body 1 is provided with internal taper hole 5, shower nozzle hole 7 and outer taper hole 6 from the inside to the outside successively.
The advantage of the utility model mesolow water spiral convergence atomizer is: volume is little, lightweight, simple in structure, installation is simple.Owing to adopting through type taper round mouth double helix convergence water channel, make out the speed of saliva fast, and with very large tangential velocity, be easy to increase range of atomized flow and atomization ability.The utility model exit adopts outer taper hole, makes, in water velocity expansion outward again, to produce the water droplets that meets fire extinguishing effect.The utility model adopts double atomization, and bore sudden change increases the disturbance to current, and atomization cone angle and spraying radius of protection are obviously increased.The utility model increases employing central jet hole, and taper hole is that three strands of current meets can be given spiral water flow thrust outside, can increase the effluxvelocity that saliva.Through checking, the nebulisation time of the utility model shower nozzle is extremely short, and range of atomized flow also meets the atomization requirement of the extinguishing device that hydraulic pressure carries from servo snakelike fire extinguishing Disaster Relief Robot above.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model mesolow water spiral convergence atomizer.
Fig. 2 is that the A-A of Fig. 1 is to cutaway view.
Fig. 3 is the main TV structure schematic diagram of inside spin cone bar.
Fig. 4 is the left TV structure schematic diagram of inside spin cone bar.
Fig. 5 is the main TV structure schematic diagram of shower nozzle push rod.
Fig. 6 is the left TV structure schematic diagram of shower nozzle push rod.
Fig. 7 is the main TV structure schematic diagram of sprayer body.
Fig. 8 is the left TV structure schematic diagram of sprayer body.
Fig. 9 is the main TV structure schematic diagram of external spiral cone bar.
Figure 10 is the left TV structure schematic diagram of external spiral cone bar.
In figure, 1 is sprayer body, and 2 is external spiral cone bar, and 3 is inside spin cone bar, and 4 is spiral convergence water channel, and 5 is internal taper hole, and 6 is outer taper hole, and 7 is shower nozzle hole, jet via-hole centered by 8, and 9 is nuts and bolt, 10 is shower nozzle push rod.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described: as Figure 1-10 shows, a kind of mesolow water spiral convergence atomizer, comprises inside spin cone bar 3, external spiral cone bar 2, sprayer body 1, shower nozzle push rod 10 4 part compositions.
Inside spin cone bar 3 is fixedly connected with external spiral cone bar 2 coaxial lines, and the round mouth spiral convergence tank Match merging of inside spin cone bar 3 and external spiral cone bar 2 is complete circular double helix convergence water channel 4.The external spiral cone male cone (strobilus masculinus) of bar 2 and the inner conical surface of sprayer body 1 are bonded to each other, the external spiral cone external cylindrical surface of column part of bar 2 and the inner cylinder face in the cylinder duct of sprayer body 1 are bonded to each other, and the bottom surface of the external spiral cone bottom surface of conical section of bar 2 and the conical section of the inner surface of sprayer body 1 is in the same plane.Two top pin of shower nozzle push rod 10 snap in the groove on inside spin cone bar 3 and external spiral cone bar 2 cylinder bottom surfaces, make the complete laminating of spiral convergence water channel 4, and make inside spin cone bar 3 and external spiral cone bar 2 not move and not rotate around axis along axis.Shower nozzle push rod 10 is fixed on sprayer body 1 by two bolt and nut groups.Left side is entrance port side.
As shown in Figure 2, inside spin cone bar 3 comprises column part and conical section, and inside spin cone bar 3 outer surfaces are provided with level and smooth round mouth double helix convergence tank from column part to conical section tip.Inside spin Zhui Gan center is provided with central jet through hole 8.
As shown in Figure 3, shower nozzle push rod 10 has two top pin to make inside spin cone bar 3 and external spiral cone bar 2 aim at laminating, and makes inside spin cone bar 3 and external spiral cone bar 2 not move and not rotate around axis along axis.There is the ring flange with two bolts hole on right side.
As shown in Figure 4, the inner duct of sprayer body 1 is made up of successively cylinder duct (being spiral convergence water channel 4), inner cone duct, shower nozzle duct and outer cone duct.There is the ring flange with two bolts hole in left side (entrance port side).
As shown in Figure 5, external spiral cone bar 2 comprises column part and conical section, and external spiral cone bar 2 inner surfaces most advanced and sophisticated level and smooth round mouth double helix that is provided with from column part to conical section is restrained tank.
Described inside spin cone bar 3 and external spiral cone bar 2 can entirety be processed under advanced machining technology, are combined into screw conic bar.
The extinguishing device that the utility model carries from servo snakelike fire extinguishing Disaster Relief Robot above for hydraulic pressure, cube little, lightweight, simple in structure, easy for installation, and atomizing effect is good; The quality of fine mist spray head atomization directly affects its fire extinguishing effect, the not only using water wisely but also can fast and effeciently put out a fire of good atomization characteristics, because hydraulic pressure should be driven and be emitted again mist fire-fighting by hydraulic pressure from servo snakelike fire extinguishing Disaster Relief Robot, therefore hydraulic pressure can be too not high in the time of work, therefore the utility model adopts direct projection eddy flow convergence type ejecting device to realize the fire extinguishing of mesolow atomization of water current.
Adopt FLUENT software to carry out numbered analog simulation to designed atomizer, analyzing after the speed of shower nozzle interior flow field, pressure, vector velocity, motion trace, structural design to shower nozzle has proposed prioritization scheme, and the shower nozzle after optimizing is carried out to interior flow field analysis.The atomization of current is the interactions due to air and current, so outside emulation must be considered the existence of air.Adopt three-dimensional VOF (volume of fluid, fluid volume function) two phase flow FLUENT to simulate more really the process of current atomization in air of shower nozzle ejaculation.The initial pressure that enters water is 5Mpa, and obtains drawing a conclusion:
1) water velocity of atomizer is in shower nozzle mouth place maximum, and in the time that atomizer has central jet hole and has spiral channel, the maximal rate at shower nozzle mouth place reaches 56.83m/s; When atomizer does not have central jet hole, while only having spiral channel, the maximal rate at shower nozzle mouth place reaches 50.82m/s.The speed at shower nozzle mouth place is larger, and the effect of shower nozzle atomization is better, visible, and there is positive effect in central jet hole to the atomization of shower nozzle.
2) current are entering before direct jet hole and spiral channel, water velocity slowly increases, entering after direct jet hole and spiral channel, speed has comparatively significantly increase, enter after direct jet hole and spiral channel, under the effect of spiral centrifugal, water velocity continues to increase, enter into water velocity after shower nozzle mouth and sharply increase again, reach maximum from shower nozzle mouth out time.
3) current are to enter trace before central jet hole and spiral channel more chaotic, and this explanation has produced turbulent flow in this part, and spiral channel porch is more serious than the turbulent phenomenon in porch, central jet hole; After current enter central jet hole and spiral channel, trace is smoother, shows that current are along water channel smooth flow, do not have turbulent generation.
4) high-velocity flow is injected the drag effect that can be subject to air in air, and current can make ambient air produce rough air, and constantly air are involved in current, makes the broken atomization of current, forms tiny water droplet.
5) shower nozzle atomization of water current its essence is that along jet direction, in current, the volume fraction of air slowly increases at hollow air cone of shower nozzle interruption-forming, and atomization is also more abundant.
Claims (5)
1. (1) a mesolow water spiral convergence atomizer, comprise sprayer body, described sprayer body be provided with in (1) inside spin cone bar (3), external spiral cone bar (2), (10) sprayer body (1) water inlet place is also connected with shower nozzle push rod; It is characterized in that: (2) (3) inside spin cone bar be coaxially fixedly connected with external spiral cone bar, inside spin cone bar (3) outer surface helicla flute and external spiral cone bar (2) the helicla flute of inner surface match complete round mouth spiral convergence water channel of formation (4); External spiral cone bar (2) outer surface (1) inner surface is seamless applying with sprayer body, external spiral bore bar (2) the bottom surface of conical section and sprayer body (1) the bottom surface of the conical section of inner surface is in the same plane.
2. mesolow water spiral convergence atomizer as claimed in claim 1, it is characterized in that: (1) (10) described shower nozzle push rod be connected with sprayer body by two groups of nuts and bolts, shower nozzle push rod is (10) with two top pin, described two top pin snap in inside spin cone bar and (3), (3) (2) neither move also and do not rotate around axis along axis with external spiral cone bar for fixing inside spin cone bar (2) in the groove on column part bottom surface with external spiral cone bar.
3. mesolow water spiral convergence atomizer as claimed in claim 1, it is characterized in that: (3) described inside spin cone bar comprises column part and conical section, inside spin cone bar (3) outer surface is provided with level and smooth round mouth double helix convergence tank from column part to conical section tip, (8) inside spin Zhui Gan⑶ center offers central jet through hole.
4. mesolow water spiral convergence atomizer as claimed in claim 1, it is characterized in that: (2) described external spiral cone bar comprises column part and conical section, external spiral cone bar (2) inner surface is provided with level and smooth round mouth double helix convergence tank from column part to conical section tip.
5. mesolow water spiral convergence atomizer as claimed in claim 1, is characterized in that: described sprayer body water outlet be (1) provided with successively from the inside to the outside internal taper hole (5), shower nozzle hole (7) with outer taper hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420331743.2U CN204017236U (en) | 2014-06-20 | 2014-06-20 | A kind of mesolow water spiral convergence atomizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420331743.2U CN204017236U (en) | 2014-06-20 | 2014-06-20 | A kind of mesolow water spiral convergence atomizer |
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| CN204017236U true CN204017236U (en) | 2014-12-17 |
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| CN201420331743.2U Active CN204017236U (en) | 2014-06-20 | 2014-06-20 | A kind of mesolow water spiral convergence atomizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014096A (en) * | 2014-06-20 | 2014-09-03 | 武汉科技大学 | Direct-through double-helix convergent type water pressure atomizing spray nozzle |
| CN106726491A (en) * | 2016-12-13 | 2017-05-31 | 刘晓云 | Moxa-moxibustion pre-igniting sprayer |
| CN107051760A (en) * | 2017-05-02 | 2017-08-18 | 三峡大学 | A kind of atomizer for dry fog device for reducing dust |
-
2014
- 2014-06-20 CN CN201420331743.2U patent/CN204017236U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014096A (en) * | 2014-06-20 | 2014-09-03 | 武汉科技大学 | Direct-through double-helix convergent type water pressure atomizing spray nozzle |
| CN104014096B (en) * | 2014-06-20 | 2016-05-25 | 武汉科技大学 | A kind of straight-through double helix convergence type hydraulic atomizing nozzle |
| CN106726491A (en) * | 2016-12-13 | 2017-05-31 | 刘晓云 | Moxa-moxibustion pre-igniting sprayer |
| CN107051760A (en) * | 2017-05-02 | 2017-08-18 | 三峡大学 | A kind of atomizer for dry fog device for reducing dust |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |