CN103837323A - Thickness-variable liquid film pool device enabling liquid film to be stabilized rapidly after being impacted - Google Patents
Thickness-variable liquid film pool device enabling liquid film to be stabilized rapidly after being impacted Download PDFInfo
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- CN103837323A CN103837323A CN201410084223.0A CN201410084223A CN103837323A CN 103837323 A CN103837323 A CN 103837323A CN 201410084223 A CN201410084223 A CN 201410084223A CN 103837323 A CN103837323 A CN 103837323A
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Abstract
The invention provides a thickness-variable liquid film pool device enabling a liquid film to be stabilized rapidly after being impacted, and belongs to the fields of experimental devices and experimental methods. The liquid film pool comprises support cross rods (1), a main liquid film pool body (2), an anti-drag ring (3), a hanging nail (4) and screws (6). Before the experiment that the liquid film is impacted by liquid drops is conducted, screw threads (5) are adjusted to enable the anti-drag ring (3) at the bottom to move upwards and downwards until the anti-drag ring (3) makes contact with the surface of the liquid film. When it is determined that the dripping center of a liquid drop is located at the center of the liquid film pool, the dripping experiment is started. After the liquid film is impacted, water waves are generated and expand all around, and when the water waves reach the anti-drag ring (3), the water waves are absorbed or weakened due to the effect of drag reduction of the anti-drag ring (3). The liquid film is stabilized in a short time, and the stability of the liquid film after first-time dripping is guaranteed. In the same way, dripping of a second liquid drop is conducted, the stability of the liquid film is greatly improved, the dripping process is accelerated, and the effect is obviously improved. The liquid film pool can be applied to the biological static culture production process, effectively meets the requirements for static stability of a culture solution in a culture dish, and has the advantages of being simple to operate and high in stability, improving the efficiency and the like.
Description
Technical field
The present invention relates to a kind of liquid film pond, particularly relate to drop in fluid mechanics and clash into the liquid film pond that liquid film is tested, the invention belongs to experimental provision and method and technology field.
Background technology
Along with the universality of hydromechanical development and fluid mechanics research method, people recognize the research of the numerous phenomenons of convection cell and grasp the hydromechanical method of control more and more important gradually.In industry, agricultural production, the liquid film phenomenon of drop shock solid surface is seen everywhere, such as Aero-Space engine fuel injection hits droplets impact its blade in wall, turbine, pesticide spraying and bio-pharmaceuticals biological culture etc.As a rule, drop can be at its surface coverage one deck liquid film, therefore the shock in later stage is more the phenomenon that belongs to drop shock liquid film after shock solid surface.
Require experiment that liquid film static stability is high or produce many, as biological static culture production run, need to reduce nutrient solution as far as possible and splash into the wave phenomenon producing in double dish, keep stable environmental baseline, this key factor has strengthened the conditional request to operating equipment.Therefore, clash in liquid film process at drop, how to carry out efficiently, reduce the influence of fluctuations that in operating process, liquid film produces, and the liquid film of the different thickness problem that is subject to clashing into rear fast and stable also becomes and in research, needs the difficult problem that breaks through.The solution of this problem particularly has material impact effect for many works, agricultural production in biological static culture is produced.
In the motion study process of free face, nowadays more means are to adopt high-speed camera to carry out visual observation, due to the easy mobility of fluid, cause liquid film to be subject to little disturbance and will destroy its stability, this can make it reach fast the device of steady state (SS) with regard to being starved of after a kind of liquid film at different thickness of design is clashed into.In liquid film pond, the liquid film of different-thickness can reach stable after being clashed into fast, and high efficiency and accuracy that this can improve experiment, also have important directive function to production application.
The influence factor that in liquid film pond, the liquid film of different thickness reaches this process of steady state (SS) again after being clashed into mainly contains:
(1) drop clashing into.Drop clashes in liquid film process, and the disturbance that liquid film is subject to is mainly from the shock of drop, and the stabilization process again of liquid film is also mainly the control procedure that produces ripples to clashing into.Liquid film is subject to clashing into and produces ripples, and ripples launch along liquid level, in the time encountering liquid film pond surrounding wall, produce resilience, and the water surface is difficult for static.
(2) thickness of liquid film.In liquid film pond, carry out drop and clash in different-thickness liquid film process, when the liquid film of different thickness is impacted, requiring has accurate location to subtract wave apparatus in differing heights position, reaches and produces condensate film stability requirement in research process.
(3) size in liquid film pond.In general experiment and production run, the size in the liquid film pond that uses can not be infinitely great, therefore, and the impact that will as far as possible reverberate compared with ripplet under fixing liquid film pond size cases.
(4) time interval of drop drippage.In continuity drop drippage process, drop clashes into the ripples of liquid film generation to drip and have a significant impact next time, and fast and stable ripples, guarantee Drain time interval for the second time.
Summary of the invention
The present invention can to reach stability fast after different-thickness liquid film is impacted and complete in order to improve under laboratory condition as far as possible.The object of this invention is to provide the liquid film pool device that a kind of different-thickness liquid film is subject to clashing into rear fast and stable, reduce the influence of fluctuations of liquid film in drop shock liquid film process as far as possible, fast and stable liquid film, guarantees the stability requirement of liquid film.Be applied in the stability that can improve culture environment in biological static culture production run, guarantee production efficiency.
For achieving the above object, the present invention has taked following technical scheme:
A liquid film pool device for fast and stable after the variable liquid film of thickness is impacted, is characterized in that: this device comprises rack cross-bar 1, main liquid film pond body 2, anti-drag ring 3, clothes-hook 4 and the several parts of Duo Gen screw rod 6; Screw rod 6 one end are connected on rack cross-bar 1 by screw flight 5, and one end is clothes-hook 4 in addition; Described anti-drag ring 3 contacts with the liquid film in main liquid film pond body 2, and anti-drag ring 3 hangs on clothes-hook 4, and adjusting screw(rod) screw thread 5 drives anti-drag ring 3 to move up and down.Rack cross-bar 1 symmetry is taken and is placed on main liquid film pool wall, is uniformly distributed the weight of anti-drag ring 3 and screw rod 6, avoids the inclination of anti-drag ring 3.
Further, the xsect of described anti-drag ring 3 is isosceles right triangle structure.
The course of work of this device is as follows: when immobile liquid film thickness, and rotary screw 6, screw thread 5 places of adjusting screw(rod) and the relative position of rack cross-bar 1, make the anti-drag ring 3 of below contact with liquid film.In the time that drop clashes into liquid film from aerial whereabouts, the ripples that liquid film produces launch to surrounding, and while arriving anti-drag ring 3, ripples are absorbed reduction, have reduced ripples and have reverberated effect, make liquid film surface fast and stable.
The xsect of described anti-drag ring 3 is isosceles right triangle structure, and the right angle length of side is 20mm, in the time running into the ripples of drop shock liquid film generation, the ripples in liquid film is had to good attenuation.
Described anti-drag ring 3 can move up and down by the adjusting at screw flight 5 places, in the time of different thickness of liquid film, anti-drag ring 3 is contacted with liquid film, reaches and well subtracts ripple effect.
Described anti-drag ring 3 is sentenced hang with clothes-hook 4 and is combined, and has well solved the regulating action to anti-drag ring 3 while being rigidly connected between rigid threaded rod 6 and anti-drag ring 3, has avoided anti-drag ring 3 one side contacts liquid films and opposite side departs from liquid film surface phenomena.
Described screw flight 5 is connected threadably with rack cross-bar 1, is conducive to moving up and down of adjusting screw(rod) 6, and then changes the height of anti-drag ring 3.
Described rack cross-bar 1 symmetry is taken and is placed on main liquid film pool wall, is uniformly distributed the weight of anti-drag ring 3 and screw rod 6, avoids the inclination of anti-drag ring 3.
The present invention can obtain following beneficial effect:
1, when the present invention can be readily embodied in drop shock liquid film, make liquid film fast and stable.
2, the present invention can change the position of anti-drag ring in different thickness situations easily, makes anti-drag ring and liquid film critical contact.
3, the present invention can guarantee the high efficiency of experiment, obviously shortens drop Drain time interval.Different thickness of liquid films, during without fairing, it is long that liquid film is stablized the required time, twice Drain time interval, more than 6s, utilizes fairing of the present invention, tests twice time interval while carrying out can shorten 1～2s.
Accompanying drawing explanation
Fig. 1 is the three-dimensional general outline figure of the liquid film pool device of fast and stable after the variable liquid film of thickness of the present invention is impacted.
Fig. 2 is the front view of the liquid film pool device of fast and stable after the variable liquid film of thickness of the present invention is impacted.
Fig. 3 is the left view of the liquid film pool device of fast and stable after the variable liquid film of thickness of the present invention is impacted.
Fig. 4 is the vertical view of the liquid film pool device of fast and stable after the variable liquid film of thickness of the present invention is impacted.
Fig. 5 is the liquid film pool device anti-drag ring fragmentary sectional view of fast and stable after the variable liquid film of thickness of the present invention is impacted.
Fig. 6 is the liquid film pool device screw rod clothes-hook sectional view of fast and stable after the variable liquid film of thickness of the present invention is impacted.
In figure: 1, rack cross-bar, 2, main liquid film pond, 3, anti-drag ring, 4, clothes-hook, 5, screw flight, 6, screw rod
Embodiment
The liquid film pool device of fast and stable and utilize this liquid film pool device to carry out the method that drop drippage controls to be described in further detail after the variable liquid film of this thickness being impacted below in conjunction with structure accompanying drawing.
Fig. 1 is the liquid film pool device work schematic diagram of fast and stable after the variable liquid film of thickness is impacted.This liquid film pond is mainly made up of rack cross-bar 1, main liquid film pond body 2, anti-drag ring 3, clothes-hook 4 and the several parts of screw rod 6.Main liquid film pond body is formed by the saturating glass processing of height, and the pond body length of side is 600mm.
Clash into before the experiment of different thickness liquid films carrying out drop, slowly adjusting screw(rod) screw thread 5, drives the anti-drag ring 3 of below to move up and down, and is adjusted to anti-drag ring 3 and contacts with liquid film.
Regulate drop drippage to be centered close to liquid film pond middle position, after stablizing, start the experiment of drop drippage.
Drop clashes into after liquid film, liquid film central authorities local location stability is damaged, liquid film middle position generation ripples are expanded to surrounding thereupon, in the time that ripples run into the anti-drag ring 3 of surrounding, due to the drag reduction effect of anti-drag ring 3, the ripples of Continuous Contact anti-drag ring are absorbed or weakened, make to produce or produce the very little ripples that reverberate without the ripples that reverberate.Stablize at short notice liquid film, guaranteed the once stability of the rear liquid film of drippage.So carry out secondary drop drippage, not only condensate film stability is improved a lot, and accelerated drippage process, efficiency obviously improves.
Claims (2)
- The variable liquid film of thickness be impacted after the liquid film pool device of fast and stable, it is characterized in that: this device comprises rack cross-bar (1), main liquid film pond body (2), anti-drag ring (3), clothes-hook (4) and the several parts of many screw rods (6); It is upper that screw rod (6) one end is connected to rack cross-bar (1) by screw flight (5), and one end is clothes-hook (4) in addition; Described anti-drag ring (3) contacts with the liquid film in main liquid film pond body (2), and it is upper that anti-drag ring (3) hangs on clothes-hook (4), and adjusting screw(rod) screw thread (5) drives anti-drag ring (3) to move up and down.Rack cross-bar (1) symmetry is taken and is placed on main liquid film pool wall, is uniformly distributed the weight of anti-drag ring (3) and screw rod (6), avoids the inclination of anti-drag ring (3).
- The variable liquid film of a kind of thickness according to claim 1 be impacted after the liquid film pool device of fast and stable, it is characterized in that: the xsect of described anti-drag ring (3) is isosceles right triangle structure.
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| CN201410084223.0A CN103837323A (en) | 2014-03-10 | 2014-03-10 | Thickness-variable liquid film pool device enabling liquid film to be stabilized rapidly after being impacted |
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| CN201410084223.0A CN103837323A (en) | 2014-03-10 | 2014-03-10 | Thickness-variable liquid film pool device enabling liquid film to be stabilized rapidly after being impacted |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197963A (en) * | 2016-06-27 | 2016-12-07 | 西北工业大学 | Speed and thickness adjustable liquid film generating means |
| CN106475163A (en) * | 2016-09-29 | 2017-03-08 | 河海大学常州校区 | A kind of drop generating device and its using method |
| CN107063932A (en) * | 2017-03-01 | 2017-08-18 | 榆林学院 | It is a kind of to observe the device that drop is migrated under Venturi tube pressure drop gradient |
| CN106092506B (en) * | 2016-08-01 | 2018-06-12 | 西北工业大学 | High speed droplet/wall surface liquid film angular impact experimental rig |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197963A (en) * | 2016-06-27 | 2016-12-07 | 西北工业大学 | Speed and thickness adjustable liquid film generating means |
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| CN106092506B (en) * | 2016-08-01 | 2018-06-12 | 西北工业大学 | High speed droplet/wall surface liquid film angular impact experimental rig |
| CN106475163A (en) * | 2016-09-29 | 2017-03-08 | 河海大学常州校区 | A kind of drop generating device and its using method |
| CN106475163B (en) * | 2016-09-29 | 2018-12-18 | 河海大学常州校区 | A kind of drop generating device and its application method |
| CN107063932A (en) * | 2017-03-01 | 2017-08-18 | 榆林学院 | It is a kind of to observe the device that drop is migrated under Venturi tube pressure drop gradient |
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