CN101806705A - Small modular spraying device - Google Patents
Small modular spraying device Download PDFInfo
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- CN101806705A CN101806705A CN200910008975A CN200910008975A CN101806705A CN 101806705 A CN101806705 A CN 101806705A CN 200910008975 A CN200910008975 A CN 200910008975A CN 200910008975 A CN200910008975 A CN 200910008975A CN 101806705 A CN101806705 A CN 101806705A
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- spraying device
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Abstract
The invention relates to a small modular spraying device used in a large-space salt spray test system. The small modular spraying device mainly comprises a spraying tower, a brine elevation controller, an anticorrosion nozzle without crystal composed of an air nozzle and a water nozzle, an air supply line and a water supply line, wherein the anticorrosion nozzle without crystal is arranged in the slotting part of the cylindrical wall of a spraying unit and extends in the spraying tower; the brine elevation controller is arranged on the same horizontal plane of the spraying tower; the water supply line firstly provides brine for the brine elevation controller from the outside of test space, secondly provides brine for the brine tank of the spraying tower from the brine elevation controller and finally provides brine for the nozzle; and the air supply line provides compressed gas for the nozzle from the outside of test space, the air nozzle and water nozzle are used to form two-phase fluid, the two-phase fluid flows upward along the tower body of the spraying tower, is scattered and reflected by a reverse pyramid arranged on the upper part of the spraying tower and overflows to the outside in a circumferential manner. The device of the invention is characterized by corrosion resistance, good settlement homogeneity, stable, recurrent and adjustable settlement, and miniaturization, and is the key equipment for realizing the modularization and combination of spray field characteristics of the large-size salt spray test system.
Description
Technical field
The invention belongs to the environmental simulation technical field.Specifically, relate to a kind of large-scale spraying plant that air atomization generates in the salt fog environment simulation test system of expanding.
Background technology
At present, mature air atomization device mainly adapts to the construction of little space test system, and device building block size is generally big, function is disperseed.As being used for large space when atomizing combination, limited first test space can't hold due parts, and large-size components also will disturb the natural uniform settling of salt fog, influences the homogeneity of rate of descent.Simultaneously, in the salt fog exposure test, the condensate water that parts surface condenses in a large number also will be a test hidden danger.Second function is disperseed, and the controlled variable with the air atomization device is not divided into special parameter same parameter together, and every covering device all has appurtenances separately, and not only repeated plant is more during applied in any combination, and regulates complicated.
The atomizing sedimentation is the important support ability that pilot system possesses check, evaluation and test ability with reappearing evenly.In small-sized salt-fog test equipment, atomizing component is single equipment, its installation position comparatively flexibly, can disperse.But when being used in combination, ripe air atomization device is only to influencing the even and reproducible several influence factor (nozzle characteristics of sedimentation, the two-phase flow flow field characteristic, atomisation pressure, water source siphon height etc.) control, and rely on certain constant boundary condition, as the test space size, nozzle locations etc. have reached reappearing of sedimentation substantially.But when atomising device is used for the combination spraying, each position boundary condition difference, reproducibility will be difficult to guarantee.For this reason, the atomization unit design needs as far as possible each influence factor to be become the interior condition of stable and controllable.
Because the even useful area of the tower atomizing of spraying is less, generally is about 0.4m
2Square metre.As make up when being used for several hectostere pilot system, test space will be laid up to a hundred unit.The atomizing parts take up space excessive, not only influence mist field distribution characteristic, and the condensate water of atomizing parts surface will be the emphasis problem that testing requirements is evaded.Therefore, atomization unit need carry out miniaturization Design.
Summary of the invention
The invention provides and a kind ofly adapt to that spatial variations requires, can realize large space salt fog uniform settling and reproducible small modular spraying device by array combination, make salt fog testing system from the develop into possibility of box-type, promote the adaptive research of total system salt mist environment to the large-scale experiment chamber.
The present invention realizes by following technical proposal:
The small modular spraying device that is used for the large space salt fog testing system of the present invention mainly comprises corrosion-resistant no crystallization nozzle, supply air line, supply channel that spray tower, salt solution elevation control device, valve and water nozzle are formed.Wherein, corrosion-resistant no crystallization nozzle stretches in the spray tower by the fluting place setting of sprayer unit cylindrical wall; Salt solution elevation control device is installed on the same surface level of spray tower, and supply channel feeds to salt solution elevation control device from the outside salt solution that inserts of test space, infeeds the brine pit of spray tower from salt solution elevation control device again, is fed to nozzle again; Supply air line inserts pressed gas outward by test space, also feeds to nozzle, and the two-phase fluid that described valve and water nozzle form makes progress along the tower body of spray tower, after the inverted triangle cone that is provided with through spray tower top is broken up and reflected, becomes circle-shaped and looses to excessive.
In the said apparatus, the material of nozzle is a transparency silica glass.
In the said apparatus, the material of salt solution elevation control device is poly methyl methacrylate plastic (PMMA) or igelite (PVC).
In the said apparatus, the material of spray tower is that the height and position of the inverted triangle cone that is provided with of Maranyl (PA) or igelite (PVC) and spray tower top and the angle of cone cone angle can be regulated, and preferably cone angle of taper scope is 45 to spend.
Further, in said apparatus, on the supply air line decomposition pressure control system such as pressure maintaining valve, reduction valve can be set, the pressure of preferred pressure gas is 0.08Mpa-0.12Ma at least.
Further, in said apparatus, on the supply channel outside the test space by-pass valve control is set, current are controlled.
Further, the atomizing pressure in the spray tower can adopt many group atomization unit centralized control or the control of single atomization unit.Wherein, the addendum cone height of the spray tower by regulating single atomization unit, the discharge area that can change the atomizing two-phase flow is to reduce the atomizing through-current capacity.
The small modular spraying device that is used for the large space salt fog testing system of the present invention has following remarkable advantage:
1, the atomization unit settling amount can be regulated by parameters such as atomizing pressure, siphon heights.During applied in any combination, main regulative mode is as follows:
A. local, integrally-regulated on the same group.By integrated design, atomizing pressure will adopt many group atomization unit centralized controls.Therefore, carrying out the regional subsidence amount when integrally-regulated, can set, reach the integrally-regulated of settling amount by the pressure of regulating this regional centralized air supply system.
B. local, non-adjusting on the same group.The addendum cone height of the spray tower by regulating single atomization unit can change the discharge area of atomizing two-phase flow, thereby reduces the atomizing through-current capacity, reaches the purpose of regulating the rate of descent size.
2, the stable reproduction of rate of descent
Factor at influence atomizing settling amount: nozzle arrangements size, atomizing pressure, siphon height, spray tower physical dimension etc.By keeping the stability number of parameter, promptly the boundary condition of atomizing is realized the stable reproduction of rate of descent.Be specially:
1) the nozzle arrangements size passes through to select the manufacturing materials of the transparency silica glass of high strength, corrosion resistant as nozzle, and be provided with the two syndeton, guaranteed to wash away under the condition in salt air corrosion and air-flow, the body construction size constancy of valve, water nozzle, relative position relation are constant.
2) pressure stability makes in the very little scope of atomization pressure fluctuation by by decomposition pressure control system such as pressure maintaining valve reduction valve, reaches the purpose of pressure stability.
3) the salt solution elevation control device of the stable outside centralized control water source by the whole test system of siphon height, each sprayer unit, the series connection of spray tower brine pit are used, and the siphon height fluctuation that the salt solution supply can be brought significantly reduces.
Description of drawings
Fig. 1 is the structural representation that is used for the small modular spraying device of large space salt fog testing system of the present invention.
Among the figure: 1, spray tower; 2, salt solution elevation control device; 3, corrosion-resistant no crystallization nozzle; 4, supply channel; 5, supply air line; 6, valve; 7 water nozzles; 8, brine pit.
Fig. 2 is the spray tower inner fluid flow schematic diagram that is used for the small modular spraying device of large space salt fog testing system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described by embodiment.
Referring to Fig. 1, Fig. 1 is the structural representation that is used for the small modular spraying device of large space salt fog testing system of the present invention.Wherein, small modules atomising device of the present invention has adopted the air atomization mode, and it mainly comprises spray tower 1, salt solution elevation control device 2, corrosion-resistant no crystallization nozzle 3 and supply channel 4, supply air line 5.Corrosion-resistant no crystallization nozzle comprises water nozzle 7 and valve 6, pre-configured salt solution at first enters into salt solution elevation control device 2 by the test storage cistern by supply channel 4, salt solution elevation control device 2 is connecting the brine pit 8 of spray tower 1 below by supply channel 4, and brine pit 8 links to each other with the water nozzle 7 of nozzle.The gas of outside 0.08Mpa-0.12Mpa is connected with the valve 6 of nozzle by supply air line 5.Valve 7 under syphonic effect by near-sonic speed gas will drip through the saline solution of water nozzle outlet break up, fragmentation, thereby form gas-liquid two-phase flow.Two-phase fluid upwards flows along the tower body of spray tower 1, and spray tower 1 top is provided with inverted triangle cone (indicating), after the two-phase fluid at arrival spray tower top is broken up and reflected through the inverted triangle cone, becomes circumferential excessive loosing.Its flow state illustrates in Fig. 2.
Specifically:
1) nozzle
Nozzle is made up of valve and water nozzle, and wherein valve connects pressurized air, and the source of the gas of being responsible for atomizing forms high-speed jet; Water nozzle is connected with the brine pit of spray tower, and the overall process of siphon height keeps to utilize the liquid level of salt solution elevation control device to keep function to realize atomizing preferably.Nozzle preferably adopts the transparency silica glass material.This quartz material is the single component of silicon dioxide, has high rigidity, low-expansion coefficient, high temperature resistant and chemical stability etc., but withstand long term exposure salt air corrosion, and be difficult for forming crystallization.
2) salt solution elevation control device
Salt solution elevation control device has been realized the height control and the supply in real time of atomizing saline water level based on law of buoyancy and law of connected vessels.The saline source that these parts can be concentrated from the outside is constantly introduced salt solution.Communicate with the brine pit of spray tower by soft connecting line simultaneously, thereby utilize law of connected vessels, the two water level is consistent.Salt solution elevation control device preferably adopts poly methyl methacrylate plastic (PMMA), and this material has fabulous light transmission, good anti-corrosion and good plasticity.
(3) spray tower
The atomisation tower is an atomizing two-phase flow guidance set, is determining the distribution character of atomizing field, is also bearing functions such as nozzle location and the maintenance of salt solution siphon height simultaneously, is the pairing use with nozzle.During atomizing, the two-phase flow that nozzle produces is under the tower body constraint, upwards spray, and bump at the conical surface of exit and adjustable back taper, to around spread, natural subsidence progressively, the height and position of the inverted triangle cone that spray tower top is provided with and the angle of cone cone angle can be regulated, and preferred cone angle of taper scope is 45 degree.Usually, spray tower adopts Maranyl (PA) to make, and this material tension is slightly high, impact flexibility is good, wearing quality is excellent, can tolerate weak acid and weak base, and moulding is easy.In addition, the atomizing pressure in the spray tower can adopt many group atomization unit centralized control or the control of single atomization unit.Wherein, the addendum cone height of the spray tower by regulating single atomization unit, the discharge area that can change the atomizing two-phase flow is to reduce the atomizing through-current capacity.
The successful applied in any combination of the present invention has realized the salt fog field characteristic that test space is about 600 cubic metres.Simultaneously, this spraying plant has been carried out the experimental test that rate of descent, sedimentation homogeneity, effective range and rate of descent repdocutbility are carried out, the result is as follows:
(1) rate of descent: the about 2ml/80cm of average
2.h;
(2) all should the property scope: in the scope of diameter 700mm;
(3) sedimentation repdocutbility: single-point settling amount numerical fluctuations is ± 2%, and stable reproduction better.
Although above the specific embodiment of the present invention has been given to describe in detail and explanation; but what should indicate is; we can carry out various equivalences to above-mentioned embodiment according to conception of the present invention and change and modification; when the function that it produced does not exceed spiritual that instructions and accompanying drawing contain yet, all should be within protection scope of the present invention.
Claims (9)
1. small modular spraying device that is used for the large space salt fog testing system, mainly comprise corrosion-resistant no crystallization nozzle (3), supply air line (5), supply channel (4) that spray tower (1), salt solution elevation control device (2), valve (6) and water nozzle (7) are formed, wherein, corrosion-resistant no crystallization nozzle (3) stretches in the spray tower (1) by the fluting place setting of sprayer unit cylindrical wall; Salt solution elevation control device (2) is installed on the same surface level of spray tower (1), supply channel (4) is from the outside salt solution that inserts of test space, feed to salt solution elevation control device (2), infeed the brine pit (8) of spray tower (1) from salt solution elevation control device (2) again, be fed to again in the nozzle (3); Supply air line (5) inserts pressed gas outward by test space, also feed to nozzle (3), the two-phase fluid that described valve (6) and water nozzle (7) form makes progress along the tower body of spray tower (1), after the inverted triangle cone that is provided with through spray tower (1) top is broken up and reflected, becomes circle-shaped and looses to excessive.
2. small modular spraying device as claimed in claim 1 is characterized in that, the material of described nozzle is a transparency silica glass.
3. small modular spraying device as claimed in claim 1 is characterized in that, the material of described salt solution elevation control device is poly methyl methacrylate plastic (PMMA) or igelite (PVC).
4. small modular spraying device as claimed in claim 1 is characterized in that, the material of described spray tower is Maranyl (PA) or igelite (PVC).
5. small modular spraying device as claimed in claim 1 is characterized in that, the height and position of the inverted triangle cone that described spray tower top is provided with and the angle of cone cone angle can be regulated, and cone angle of taper scope is 45 degree.
6. as each described small modular spraying device of claim 1-5, it is characterized in that the control pressurer system of pressure maintaining valve, reduction valve composition can be set on the supply air line, and the pressure limit of pressed gas is 0.08Mpa-0.12Ma.
7. as each described small modular spraying device of claim 1-5, it is characterized in that, on the supply channel outside the test space by-pass valve control is set, current are controlled.
8. as each described small modular spraying device of claim 1-5, it is characterized in that the atomizing pressure in the spray tower can adopt many group atomization unit centralized control or the control of single atomization unit.
9. small modular spraying device as claimed in claim 8 is characterized in that, the addendum cone height of spray tower through regulating single atomization unit, and the discharge area that can change the atomizing two-phase flow is to reduce the atomizing through-current capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910008975A CN101806705A (en) | 2009-02-17 | 2009-02-17 | Small modular spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910008975A CN101806705A (en) | 2009-02-17 | 2009-02-17 | Small modular spraying device |
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| CN101806705A true CN101806705A (en) | 2010-08-18 |
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| CN200910008975A Pending CN101806705A (en) | 2009-02-17 | 2009-02-17 | Small modular spraying device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798590A (en) * | 2012-08-10 | 2012-11-28 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Icing/freezing rain test system |
| CN102814249A (en) * | 2012-08-10 | 2012-12-12 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Gas flow regulating device for icing-freezing rain test system |
| CN106861966A (en) * | 2015-12-10 | 2017-06-20 | 中国船舶工业系统工程研究院 | A kind of salt fog aerosol jetting device |
| CN111189769A (en) * | 2020-01-10 | 2020-05-22 | 重庆大学 | Metal material high-temperature oxidation simulation experiment device and experiment method |
| CN113679303A (en) * | 2021-09-26 | 2021-11-23 | 复旦大学 | Spraying cleaning robot and control method thereof |
-
2009
- 2009-02-17 CN CN200910008975A patent/CN101806705A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798590A (en) * | 2012-08-10 | 2012-11-28 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Icing/freezing rain test system |
| CN102814249A (en) * | 2012-08-10 | 2012-12-12 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Gas flow regulating device for icing-freezing rain test system |
| CN102798590B (en) * | 2012-08-10 | 2014-12-24 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Icing/freezing rain test system |
| CN102814249B (en) * | 2012-08-10 | 2015-08-05 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | For the gas supply flow adjusting device of accumulated ice sleet pilot system |
| CN106861966A (en) * | 2015-12-10 | 2017-06-20 | 中国船舶工业系统工程研究院 | A kind of salt fog aerosol jetting device |
| CN106861966B (en) * | 2015-12-10 | 2020-12-11 | 中国船舶工业系统工程研究院 | Salt spray aerosol spraying device |
| CN111189769A (en) * | 2020-01-10 | 2020-05-22 | 重庆大学 | Metal material high-temperature oxidation simulation experiment device and experiment method |
| CN113679303A (en) * | 2021-09-26 | 2021-11-23 | 复旦大学 | Spraying cleaning robot and control method thereof |
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Open date: 20100818 |