CN102636420A - Device for measuring grain size of atomized droplet in large-size mist spray field - Google Patents
Device for measuring grain size of atomized droplet in large-size mist spray field Download PDFInfo
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- CN102636420A CN102636420A CN2012101285748A CN201210128574A CN102636420A CN 102636420 A CN102636420 A CN 102636420A CN 2012101285748 A CN2012101285748 A CN 2012101285748A CN 201210128574 A CN201210128574 A CN 201210128574A CN 102636420 A CN102636420 A CN 102636420A
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- 239000007921 spray Substances 0.000 title claims abstract description 42
- 239000003595 mist Substances 0.000 title abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 238000003384 imaging method Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 27
- 239000004744 fabric Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 239000002657 fibrous material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The invention discloses a device for measuring the grain size of atomized droplet in a large-size mist spray field, comprising a measuring room, a background plate and a compensating light source; the measuring room is formed by the enclosing of side plates at two sides and a top plate, the front end and the back end of the measuring room are opened, the measuring room is divided into an instrument room and a mist spray room by a middle clapboard, and the instrument room is used for arranging a measuring instrument; a semi-sealed space is formed by the enclosing of the mist spray room and the background plate, and the droplet grain to be measured is separated from the other atomized grains; the compensating light source is arranged behind the background plate, and a window is arranged on the background plate which corresponds to a measuring region, so that the light ray of the compensating light source can conveniently penetrate through the window to compensate the light of the droplet within a region to be measured; and a region in which the droplet is measured is provided with scale stripes which can focus in an imaging way and can be used as size reference, and the scale stripes are fixed at two sides of the light compensating window by steel needles. The device is convenient in measurement, the distribution of the flow field can be completely described for a low-pressure drop and high-flow mist spray head, and when the grain size of the droplet is measured, larger error can not be generated.
Description
Technical field
The present invention relates to fog-spray nozzle design, atomization evaluation field, relate to the measurement of the large-scale spray field atomized drop particle diameter that low pressure drop, big flow fog-spray nozzle are produced, especially a kind of large-scale spray field atomized drop grain diameter measurement device.
Background technology
In nuclear reactor operation and safe emergency system, there are a large amount of atomizing sprays and cooling system.Wherein system has been moved vital voltage stabilizer, employed is exactly low pressure drop, big flow fog-spray nozzle.In the fog-spray nozzle design phase and according to request for utilization fog-spray nozzle is carried out in the screening process, must carry out detail knowledge to the atomized drop particle diameter through test.When conventional fog-spray nozzle atomizing particle size distribution is measured, select equipment such as doppler phase appearance, laser particle analyzer usually for use.To the daily high pressure drop of using, the small-sized fog-spray nozzle of low discharge, this measuring method can satisfy test request.And to the low pressure drop that uses in the voltage stabilizer, big flow fog-spray nozzle; The spray field diameter can reach more than four meters, because spray area is wide, the drop particle is big; Use above classic method not only can not describe the Flow Field Distribution situation fully; And when measuring size droplet diameter, be easy to generate than mistake, even test can't be carried out because size droplet diameter exceeds measurement range.
Patent CN200410053033.9 has described a kind of scan-type nozzle atomization field mist droplet particle size and concentration space distributional analysis appearance.This type instrument requirement spray field need pass in the middle of the U type support of design, and after the light beam that sends from transmitting terminal front aperture passed whole flow field, aperture got into photelectric receiver through the receiving end front.But to big flow field noted earlier fog-spray nozzle, its diameter of section of effectively spraying can not satisfy letting whole flow fields from beam emissions, the middle requirement of passing of receiving end often greater than 2m.And parameters such as the beam intensity of this type instrument and light beam hole diameter have also limited the measurement to the larger particles drop.
Patent CN201110106477.4 discloses a kind of through gathering the detection method of vibration signal measurement atomization of liquid size distribution.Perpendicular to atomized drop injection direction place one solid baffle is being set, the vibration signal receiving trap is being set in zone, the baffle plate back side.Obtain the energy distribution rate on each characteristic frequency through vibration signal being carried out wavelet decomposition, thereby obtain corresponding size distribution.This method is comparatively loaded down with trivial details, and its operability is relatively poor.Because before actual measurement, at first need gather the vibration signal that the different-grain diameter impingement baffles produces, set up the corresponding relation between mist droplet particle size and the segmentation of vibration signal different frequency.This precondition possibly realize hardly.In addition, this measuring method does not consider that droplet speed influences the vibration signal frequency and the error that produces.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art; A kind of large-scale spray field atomized drop grain diameter measurement device is provided; This measurement device is convenient; Can describe its flow field size droplet diameter fully for low pressure drop, big flow fog-spray nozzle and distribute, and when measuring size droplet diameter, can not produce than mistake.
The objective of the invention is to solve through following technical scheme:
This large-scale spray field atomized drop grain diameter measurement device comprises measuring chamber, background board and additional light source; Said measuring chamber is surrounded by both sides side plate and top board, and its rear and front end is opened wide, and measuring chamber is divided into instrument room and jet chamber's two parts by central dividing plate, and the instrument room uses for surveying instrument is set; Jet chamber and background board surround hemi-closure space, and tested drop particle and other atomizing particle is isolated; After additional light source places background board, on background board, offer window, tested regional drop is carried out light filling so that additional source light passes this window with the measured zone correspondence position; The scale strip that is provided with imaging focusing and consults and uses as size in the measured zone of drop, scale strip is fixed in light filling window both sides by draw point.
Above-mentioned central dividing plate is processed by light material, stops that jet chamber's atomizing particle gets into the instrument room; The instrument sight line of on said central dividing plate, taking pictures is provided with openable photography sight line window through the zone.
The top board of above-mentioned measuring chamber is made up of the horizontal arrangement and the two parts that are in tilted layout, and wherein instrument room's top board is arranged horizontally, and jet chamber's top board lays the sponge porous fibrous material for being in tilted layout on top board; The horizontal arrangement part end of said top board is provided with manger board, and spraying liquid on the top board is derived from the measuring chamber both sides.
The above-mentioned background plate is that light-proof material is processed; Surround hemi-closure space with the jet chamber; Leave the slit between its top and the jet chamber's top board front end, tested drop gets into the jet chamber from this slit, and background board is positioned under the fog-spray nozzle and tip section is done the cutting processing laterally; Corresponding part with measured zone is offered window on the background board, so that the additional light behind the background board can pass this window to tested drop light filling; On said background board and the light filling window thereof, it is moderate and can make and replenish soft, the uniform background cloth of light that one side is laid transmittance in the jet chamber.
Above-mentioned scale strip is a transparent material, is fixed in the measured zone by an end of two draw points, and the other end of draw point is fixed on background board window both sides; Under the prerequisite of held stationary scale strip, the draw point cross-sectional area should be as far as possible little; Distance between said scale strip and the background board can be regulated.
Above-mentioned additional light source power is by experimental enviroment, the instrument of taking pictures decision; Additional light source is sealed in the transparent organic glass box, and places and by spraying granule its box wall is cooled off in the spray area; The aperture of power supply source line and exhaust use is left in the box bottom side of organic glass box.
The present invention has following beneficial effect:
(1) the present invention can describe the flow field size distribution fully to low pressure drop, big flow fog-spray nozzle, and when measuring size droplet diameter, measures accurately, can not produce than mistake.
(2) apparatus of the present invention can get into inside, flow field, only keep test solution and drop under the situation about not disturbed and get into measured zone, and can not limit the measurement to the larger particles drop.
(3) measurement device mode of the present invention is succinctly convenient, and operability is good.
Shape when (4) device of the present invention obtains drop flight, measurement result are not influenced by liquid drop speed etc., measure more accurate.
Description of drawings
Fig. 1 atomizing particle measurement mechanism synoptic diagram;
Fig. 2 atomizing particle measurement mechanism front elevation, shooting form cover plate partly open and do not comprise the shooting instrument;
Fig. 3 atomizing particle measurement mechanism drop inlet is arranged synoptic diagram;
Fig. 4 atomizing particle grain diameter measurement area arrangements front elevation;
Fig. 5 atomizing particle grain diameter measurement zone rear view;
Fig. 6 atomizing particle grain diameter measurement is design sketch as a result;
Wherein: 1, fog-spray nozzle; 2, jet chamber; 3, dividing plate; 4, photography sight line window; 5, removable cover; 6, top board; 7, sponge porous fibrous material; 8, manger board; 9, background board; 10, light filling window; 11, background cloth; 12, scale strip; 13, draw point; 14, light source; 15, organic glass box; 16, pedestal; 17, top board end face; 18, background board end face; 19, top board forward position; 20,21 is sidewall paneling;
Embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:
Referring to Fig. 1 and Fig. 2: large-scale spray field atomized drop grain diameter measurement device of the present invention comprises measuring chamber, background board 9 and additional light source 14 and other auxiliary equipment; Wherein measuring chamber by both sides side plate 20 and 21 and top board 6 surround; Its rear and front end is opened wide, and measuring chamber is divided into a of instrument room and the b of jet chamber by central dividing plate 3.The a of instrument room shields to instrument 2 visual plants such as grade of taking pictures, and reduces droplet when avoiding droplet that equipment is corroded and on picture taking lens, adheres to speed, guarantees image quality.Offer photography sight line window 4 on the dividing plate 3, can make accessible the passing of sight line of instrument 2, arrive measured zone c.Establish removable cover 5 on the photography sight line window 4, when instrument was worked, cover plate 5 was opened and is taken pictures.Can close cover plate 5 in the section At All Other Times, to reduce the amount of droplets that gets into a of instrument room as far as possible.
Background board 9 has surrounded hemi-closure space with the b of jet chamber, and the atomizing particle that falls into measured zone c and other regional particle that atomizes is separated.Background board 9 is processed by lighttight vertical thin plate.Leave the slit between background board 9 upper ends and the jet chamber.Tested particle falls into the measured zone c of the b of jet chamber from this slit.Arrange synoptic diagram referring to measurement mechanism inlet among Fig. 3, background board 9 is positioned under the fog-spray nozzle 1, and its top is concordant with 2 tops, jet chamber.For the device of avoiding as far as possible invading spray field disturbs the forming process generation of tested drop; Shown in top board end face 17, background board end face 18 among Fig. 3, respectively top board 6 and background board 9 end faces are cut; With top board top sponge porous fibrous material 7 layouts as shown in Figure 3, the drop that divides with 19 collisions of top board forward position can not fallen into from the device portal slit simultaneously.
Lay sponge porous fibrous material 7 on the top board 6 of a of instrument room and the b of jet chamber, divide once more so that reduce the atomizing particle that causes because of the measurement of intrusion spray field as far as possible.At top board 6 ends manger board 8 is set, spray fluid on the top board 6 is derived from the measuring chamber both sides.
Referring to Fig. 4, scale strip 12 is set in measured zone c, as with reference to size simultaneously so that focus when taking drop.Scale strip 12 is a transparent material, is fixed among the measured zone c by an end of two fine steel needles 13, and the other end of draw point 13 is fixed on the background board 9.In order to reduce to invade the error that measurement zone brings, draw point 13 is under the prerequisite of satisfied fixedly scale strip 12, and cross-sectional area must be as much as possible little.Referring to Fig. 5, on the background board 9 with measurement zone c over against the position offer light filling window 10 so that replenish light source 14 through this window to tested particle light filling.On background board 9, tested particle one side covers background cloth 11.Comprehensively referring to Figure 4 and 5,, after penetrating background cloth 11, the draw point 13 that is used for fixing scale strip 12 is fixed on the background board 9 of light filling window both sides about in the of 10 in measured zone.Background cloth 11 on the window 10 can make the photography light filling soft, even, and background cloth 11 can avoid making spraying granule directly to take place directly to contact with the background board 9 of rigid material on the background board 9 simultaneously.
Replenishing light source 14 is sealed in the transparent organic glass box 15.The spray field drop avoids replenishing the wall that light source 14 gives out heat burn through 15 simultaneously to 15 cooling effects of organic glass box.The height of adjustment pedestal 16 and and background board 9 between distance so that obtain the best achievement in cinematography picture.The shooting results design sketch is as shown in Figure 6.
Claims (6)
1. one kind large-scale spray field atomized drop grain diameter measurement device is characterized in that, comprises measuring chamber, background board (9) and additional light source (14); Said measuring chamber is surrounded by both sides side plate (20,21) and top board (6), and its rear and front end is opened wide, and measuring chamber is divided into instrument room (a) and jet chamber (b) two parts by central dividing plate (3), and instrument room (a) uses for surveying instrument is set; Jet chamber (b) surrounds hemi-closure space with background board (9), and tested drop particle and other atomizing particle is isolated; After replenishing light source (14) and placing background board (9), go up with the measured zone correspondence position at background board (9) and to offer light filling window (10), tested regional drop is carried out light filling so that additional light source (14) light passes this window; The scale strip (12) that is provided with imaging focusing and consults and uses as size in the measured zone of drop, scale strip (12) is fixed in light filling window (10) both sides by draw point (13).
2. large-scale spray field atomized drop grain diameter measurement device according to claim 1 is characterized in that said central dividing plate (3) is processed by light material, stops that jet chamber's atomizing particle gets into the instrument room; The instrument sight line of on said central dividing plate (3), taking pictures is provided with openable photography sight line window (4) through the zone.
3. large-scale spray field atomized drop grain diameter measurement device according to claim 1; It is characterized in that; The top board of said measuring chamber (6) is made up of the horizontal arrangement and the two parts that are in tilted layout; Wherein instrument room (a) top board is arranged horizontally, and jet chamber (b) top board lays sponge porous fibrous material (7) for being in tilted layout on top board (6); The horizontal arrangement part end of said top board (6) is provided with manger board (8), top board (6) is gone up spraying liquid derive from the measuring chamber both sides.
4. large-scale spray field atomized drop grain diameter measurement device according to claim 1; It is characterized in that; Said background board (9) is processed for light-proof material, surrounds hemi-closure space with jet chamber (b), leaves the slit between its top and the jet chamber's top board front end; Tested drop gets into jet chamber (b) from this slit, and background board (9) is positioned under the fog-spray nozzle (1) and tip section is done the cutting processing laterally; On said background board (9) and the light filling window (10) thereof, it is moderate and can make and replenish soft, the uniform background cloth of light (11) that (2) one sides are laid transmittance in the jet chamber.
5. large-scale spray field atomized drop grain diameter measurement device according to claim 1; It is characterized in that; Said scale strip (12) is a transparent material, is fixed in the measured zone by an end of two draw points (13), and the other end of draw point (13) is fixed on background board (9) window both sides; Under the prerequisite of held stationary scale strip (12), draw point (13) cross-sectional area should be as far as possible little; Distance between said scale strip (12) and the background board (9) can be regulated.
6. large-scale spray field atomized drop grain diameter measurement device according to claim 1 is characterized in that, said additional light source (14) power is by experimental enviroment, the instrument of taking pictures decision; Replenish light source (14) and be sealed in the transparent organic glass box (15), and place in the spray area and its box wall is cooled off by spraying granule; The aperture of power supply source line and exhaust use is left in the box bottom side of organic glass box (15).
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| CN201210128574.8A CN102636420B (en) | 2012-04-27 | 2012-04-27 | Device for measuring grain size of atomized droplet in large-size mist spray field |
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| CN201210128574.8A CN102636420B (en) | 2012-04-27 | 2012-04-27 | Device for measuring grain size of atomized droplet in large-size mist spray field |
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| CN102636420A true CN102636420A (en) | 2012-08-15 |
| CN102636420B CN102636420B (en) | 2014-03-12 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728231A (en) * | 2014-01-15 | 2014-04-16 | 江苏中烟工业有限责任公司 | Detection method for particle sizes of atomized droplets of feed liquid |
| CN103842797A (en) * | 2013-05-10 | 2014-06-04 | 浙江大学 | One-dimensional full-field rainbow measurement device and measurement method |
| CN104154871A (en) * | 2014-08-27 | 2014-11-19 | 厦门大学 | Diameter measuring method for mono-disperse micro-droplets |
| CN104165829A (en) * | 2014-08-27 | 2014-11-26 | 厦门大学 | Monodisperse microdroplet diameter measuring device and monodisperse microdroplet diameter measuring method |
| CN105300851A (en) * | 2015-11-11 | 2016-02-03 | 中国农业大学 | Method for detecting spraying droplet three-dimensional distribution based on laser technology |
| CN107664729A (en) * | 2017-10-27 | 2018-02-06 | 佛山科学技术学院 | A kind of atomizer detection machine |
| CN108776100A (en) * | 2018-06-19 | 2018-11-09 | 西南科技大学城市学院 | A kind of material particles automatic measurement mechanism |
| CN110006906A (en) * | 2019-02-20 | 2019-07-12 | 上海鋆雪自动化有限公司 | A kind of finer atomization spray head detection device and its control method |
| CN113188961A (en) * | 2021-03-30 | 2021-07-30 | 湘潭市计量测试检定所 | Detection method for equivalent volume particle size distribution of medical compressed atomizer fog particles |
| CN113933218A (en) * | 2021-09-26 | 2022-01-14 | 西安交通大学 | Equipment for measuring local atomization granularity of large-scale spray field by matching with laser particle sizer |
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| CN103842797A (en) * | 2013-05-10 | 2014-06-04 | 浙江大学 | One-dimensional full-field rainbow measurement device and measurement method |
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| CN103842797B (en) * | 2013-05-10 | 2015-10-21 | 浙江大学 | One dimension whole audience rainbow measurement mechanism and measuring method |
| CN103728231A (en) * | 2014-01-15 | 2014-04-16 | 江苏中烟工业有限责任公司 | Detection method for particle sizes of atomized droplets of feed liquid |
| CN104154871A (en) * | 2014-08-27 | 2014-11-19 | 厦门大学 | Diameter measuring method for mono-disperse micro-droplets |
| CN104165829A (en) * | 2014-08-27 | 2014-11-26 | 厦门大学 | Monodisperse microdroplet diameter measuring device and monodisperse microdroplet diameter measuring method |
| CN105300851A (en) * | 2015-11-11 | 2016-02-03 | 中国农业大学 | Method for detecting spraying droplet three-dimensional distribution based on laser technology |
| CN105300851B (en) * | 2015-11-11 | 2017-08-25 | 中国农业大学 | A kind of detection method of the spraying droplet three-dimensional spatial distribution based on laser technology |
| CN107664729A (en) * | 2017-10-27 | 2018-02-06 | 佛山科学技术学院 | A kind of atomizer detection machine |
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| CN108776100A (en) * | 2018-06-19 | 2018-11-09 | 西南科技大学城市学院 | A kind of material particles automatic measurement mechanism |
| CN108776100B (en) * | 2018-06-19 | 2020-11-24 | 西南科技大学城市学院 | Automatic material particle measuring mechanism |
| CN110006906A (en) * | 2019-02-20 | 2019-07-12 | 上海鋆雪自动化有限公司 | A kind of finer atomization spray head detection device and its control method |
| CN110006906B (en) * | 2019-02-20 | 2021-12-17 | 上海鋆雪自动化有限公司 | Fine atomization nozzle detection device and control method thereof |
| CN113188961A (en) * | 2021-03-30 | 2021-07-30 | 湘潭市计量测试检定所 | Detection method for equivalent volume particle size distribution of medical compressed atomizer fog particles |
| CN113933218A (en) * | 2021-09-26 | 2022-01-14 | 西安交通大学 | Equipment for measuring local atomization granularity of large-scale spray field by matching with laser particle sizer |
| CN113933218B (en) * | 2021-09-26 | 2022-08-05 | 西安交通大学 | Equipment for measuring local atomization granularity of large-scale spray field by matching with laser particle sizer |
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