CN103792079A - Device for testing nozzle characteristics - Google Patents
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- CN103792079A CN103792079A CN201410034846.7A CN201410034846A CN103792079A CN 103792079 A CN103792079 A CN 103792079A CN 201410034846 A CN201410034846 A CN 201410034846A CN 103792079 A CN103792079 A CN 103792079A
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Abstract
The invention relates to a device for testing nozzle characteristics. The device comprises a testing device box, a nozzle, a testing platform system, a gas channel system, a water channel system and a laser imaging system. The device is used for testing aerial fog characteristics such as the drop grain diameters, the drop speed, the flow density at the different positions and drop grain diameter distribution of the different nozzles at different spraying heights at different air pressures and different water pressures. The device is high in testing accuracy, wide in adjusting scope, stable in operation and capable of testing the aerial fog characteristics of single-phase liquid flow and gas liquid two-phase flow.
Description
Technical field
The present invention relates to this technical field of mensuration of aerosol characteristic, specifically a kind of proving installation of nozzle aerosol characteristic.
Background technology
Existing nozzle aerosol characteristic test device all can not regulate the jetting height of nozzle, but because the characterisitic parameter (as particle diameter, liquid drop speed, jet density etc.) of nozzle ejection aerosol is to follow the variation of nozzle distance and corresponding its variation, can realize under differing heights be the important technological problems that the present invention will solve to the measurement of nozzle aerosol characterisitic parameter.
The every field of aerial fog nozzle in industry all has a wide range of applications, the aerosol jet producing by nozzle in metallurgical continuous casting secondary is cooling carrys out cooling steel billet, therefore set the arrangement of nozzle, the size of jet length and air pressure hydraulic pressure all will be according to the aerosol characteristic of nozzle, having selected suitable characterisitic parameter can carry out evenly cooling better to steel billet, thereby using water wisely electricity consumption, reduces production costs; In agricultural, carry out atomization pesticide spraying with aerial fog nozzle, agricultural chemicals is atomized into great drop by aerial fog nozzle, with great speed, be sprayed onto the aerosol characteristic that also needs to rely on nozzle on vegetation with distance how far, thereby can better improve the utilization factor of agricultural chemicals; In spraying industry, the speed of spraying drop, size, direction, all on being coated with important impact, also need the aerosol characteristic of nozzle to study accordingly in order to improve the effect of spraying; In the wet desulphurization of power plant, denitration, dust removal process, the particle size of jet droplets, the useful area that speed can have influence on injection, set rational aerosol characterisitic parameter and can reach using water wisely electricity consumption, the effect reducing production costs; In dry field, aerial fog nozzle also has a wide range of applications, and the material of some thickness such as for example dry milk, medicine, fuel and some inorganic salts, thermal sensitivity, sets rational aerosol characteristic, can utilize minimum power consumption to reach best drying effect, thereby directly have influence on economic benefit; In workshop and living space, aerosol type humidifier reaches by fine drop being sprayed onto in space the effect that regulates humidity in space, and the size of these drops and speed directly have influence on the effect of drop in spatial movement.
Therefore, set up the various aerosol characteristics that can simultaneously test aerial fog nozzle (as size droplet diameter, size droplet diameter distributes, liquid drop speed, jet density etc.) the aerosol characteristic of research nozzle is had to extremely important meaning, and current nozzle characteristic testing device, its power of test is very limited, for example disclosed mixed nozzle measuring device in patent CN1743830, the overall discharge that its can only test nozzles different Pneumatic waters are depressed, and can not test the Changing Pattern of different spray area jet densities, and cannot debug the height of nozzle, there is significant limitation in this proving installation, be difficult to the aerosol characteristic of nozzle to play good test effect.
Aerosol characteristic just because of nozzle has important effect aborning, and air pressure hydraulic pressure size, the jet length distance of nozzle are the key factors that affects aerosol characteristic, thereby set up one can integration test different spray nozzles at different air pressure hydraulic pressure, the proving installation of the spray characteristics under different jet lengths is with a wide range of applications.
Summary of the invention
The technical issues that need to address of the present invention are to overcome the defect of prior art, a kind of proving installation of nozzle aerosol characteristic is provided, realizes the test that completes the aerosol characteristics such as size droplet diameter, size droplet diameter distribution, liquid drop speed, jet density under the different jetting heights of nozzle by test platform that can VTOL (vertical take off and landing).
For addressing the above problem, the present invention adopts following technical scheme:
A proving installation for nozzle aerosol characteristic, comprises casing, nozzle, test platform system, gas circuit system, water circuit system, and laser imaging system;
---nozzle, be connected to air-channel system and water circuit system, thereby form the required aerosol of test, nozzle is arranged under box top by gimbals, on test platform;
---test platform system, comprise can VTOL (vertical take off and landing) test platform, test platform jacking system, and test need to be arranged on grid water collector or the oil film water collection sheet on test platform according to difference;
---air-channel system, comprises air pump, gas tank, gas circuit pressure regulator valve, gas gauge and gas meter;
---water circuit system, comprises water tank, water pump, feed water valve, water ga(u)ge, back-water valve (BWV) and water route pressure regulator valve;
---laser imaging system, comprise laser generator, CCD camera and computer data processing system, laser generator is installed on a side of casing, CCD camera is installed on the opposite side of casing, CCD camera is corresponding to laser generator setting, and the signal capturing is sent to computer data processing system.
Further, described test platform jacking system comprises VTOL (vertical take off and landing) stepper motor and lifting driving-chain, article four, lifting driving-chain difference at right angle setting is in the four side place of casing, between the end face and bottom surface of casing, four ends of test platform are fixedly attached to respectively each lifting driving-chain, VTOL (vertical take off and landing) stepper motor is installed, for controlling the lifting of lifting driving-chain on box top.
Further, described grid water collector is a rectangular parallelepiped hatch frame, and its bottom surface upwards has the dividing plate that equidistant parallel is arranged, and the dividing plate of grid water collector adopts pinnacle type structure, and the side of dividing plate is provided with rule.
Further, the size length × wide × height of described grid water collector is 500 × 100 × 110mm mm, between dividing plate, is spaced apart 8mm, and the wall thickness of dividing plate is 2mm.
Further, described oil film water collection sheet is a rectangular glass sheet, is evenly coated with the potpourri of vaseline and machine oil on it, and the volume ratio of vaseline and machine oil is 1:3.
Further, described air pump is connected to gas tank by gas path pipe, and gas tank is connected to nozzle by gas path pipe, and gas gauge and gas circuit pressure regulator valve are installed on gas tank, and gas tank is provided with gas meter to the gas path pipe of nozzle.
Further, described water tank is installed on bottom in proving installation casing, water tank is connected to nozzle by waterway pipe, on waterway pipe, be provided with successively feed water valve, water pump, water route pressure regulator valve and water ga(u)ge, is provided with waterway pipe and is communicated with recovery tank, and this section of waterway pipe is provided with back-water valve (BWV) between water pump and water route pressure regulator valve.
Further, the gas path pipe in described gas circuit and water circuit system and waterway pipe all adopt metallic bellows.
Further, described proving installation also has a drainage tube.
A method of testing of utilizing the proving installation of nozzle aerosol characteristic, comprises the steps:
1, nozzle to be measured is arranged on gimbals, obtains the required spray angle of test by adjusting gimbals;
2, grid water collector is arranged on test platform, then adjusts the height of test platform by test platform jacking system, thereby obtain the required jetting height of test;
3, drainage tube is mounted to nozzle, opens gas circuit and water route pressure regulator valve adjustable pressure and hydraulic pressure, after aerosol reaches test necessary requirement, withdraw drainage tube, start the test of nozzle aerosol characteristic;
4, open laser generator and CCD camera, collect by CCD camera the light signal that laser generator produces, thereby the signal capturing is sent to computer data processing system, formation speed field pattern;
5, record aerosol and start injecting time, by the time when the highest liquid level of grid water collector will reach the top, again drainage tube is mounted to nozzle, and records the aerosol end injection time, by reading the recovery water yield and the aerosol injecting time of grid water collector, calculate the jet density of this nozzle;
6, oil film water collection sheet is arranged on test platform, withdraws drainage tube, when aerosol is sprayed to oil film water collection sheet by the time, again drainage tube is mounted to nozzle, close gas circuit and water route pressure regulator valve, take out oil film water collection sheet, by microscope, drop is carried out to grain diameter measurement;
7, repeat above-mentioned flow process, regulate jetting height, spray angle, air pressure, hydraulic pressure, carries out the nozzle aerosol characteristic test under different conditions parameter.
Beneficial effect of the present invention:
(1) in apparatus of the present invention owing to having adopted the form of VTOL (vertical take off and landing) test platform, can effectively adjust the jetting height of nozzle, thereby can realize the test of nozzle aerosol characteristic under differing heights, and nozzle is installed by gimbals, can adjust arbitrarily spray angle, can test as required in addition replacing nozzle, there is measurement range wide, effect simple to operate.
(2) apparatus of the present invention can realize the measurement of jet density, size droplet diameter, liquid drop speed simultaneously, have realized a tractor serves several purposes, and applied range has reduced the cost of proving installation.
(3) dividing plate of grid water collector of the present invention adopts pinnacle structure, farthest reduce the impact that drop rebounds on jet density distribution measuring accuracy, and there is rule in side, thereby collecting after aerosol, can directly read the quantity of collecting liquid in each grid, in addition, the size of each grid and the setting at interval, can be in limited spray regime the more detailed jet density distribution situation that reflects, the setting of dividing plate wall thickness, can farthest reduce the impact that drop rebounds on jet density distribution measuring accuracy.
(4) oil film water collection sheet of the present invention has adopted the mode of the potpourri of vaseline and machine oil.Due to the water wettability of vaseline and the hydrophobicity feature of machine oil, make both potpourris have infiltration package action to water droplet, can allow drop in oil film, keep spherical, and not have quality loss, be convenient to measure the diameter of drop, statistics size droplet diameter distributes.
(5) gas path pipe of the present invention and waterway pipe all adopt metallic bellows, thereby can effectively reduce vibration in gas and the water course of conveying impact on experimental measurements accuracy.
(6) drainage tube that the present invention adopts, in test process, can be mounted to nozzle, thereby unsettled spraying is caused on one side, when aerosol reaches testing requirement by the time, then drainage tube is withdrawn, thereby makes the structure of test more accurate.
Accompanying drawing explanation
Fig. 1 is nozzle aerosol characteristic test device stereographic map of the present invention;
Fig. 2 is nozzle aerosol characteristic test device front view of the present invention;
Fig. 3 is nozzle aerosol characteristic test device gas circuit/waterway structure figure of the present invention;
Fig. 4 is the structural representation (Fig. 4 (a) front view and Fig. 4 (b) vertical view) of grid water collector of the present invention;
Fig. 5 is that device of the present invention carries out the aerosol droplets particle diameter schematic diagram in when test;
Fig. 6 is that device of the present invention carries out the aerosol velocity field schematic diagram in when test;
1 casing; 2 view windows; 3 nozzles; 4 grid water collectors; 5 test platforms;
6 lifting driving-chains; 7 air-channel systems; 7-1 air pump; 7-2 gas tank; 7-3 gas circuit pressure regulator valve; 7-4 gas gauge; 7-5 gas meter; 8 water circuit systems; 8-1 water tank; 8-2 water pump; 8-3 feed water valve; 8-4 water ga(u)ge; 8-5 back-water valve (BWV); 8-6 water route pressure regulator valve; 9 oil film water collection sheets; 16 laser generators; 17 CCD cameras; 18 drainage tubes.
Embodiment
The invention provides a kind of proving installation of nozzle aerosol characteristic, as shown in Figure 1, this device comprises proving installation casing 1, nozzle 3, test platform system, air-channel system 7, water circuit system 8, and laser imaging system.
Referring to Fig. 1, proving installation casing 1 is a rectangular structure, it has end face, bottom surface and four sides, on side, there is printing opacity view window 2, nozzle 3 is connected to described air-channel system 7 and water circuit system 8, thereby form the required aerosol of test, nozzle 3 is arranged under box top by gimbals (not shown), on test platform 5, can adjust the spray angle of nozzle 3 with respect to test platform 5 by gimbals, and can multi-form nozzle need to be installed on gimbals according to test.
Referring to Fig. 1, described test platform system comprises test platform 5 that can VTOL (vertical take off and landing), test platform jacking system, and test need to be arranged on grid water collector 4 or the oil film water collection sheet 9 on test platform according to difference.Test platform 5 is installed in proving installation casing 1, test platform jacking system comprises VTOL (vertical take off and landing) stepper motor and lifting driving-chain 6, article four, lifting driving-chain 6 difference at right angle settings are in the four side place of casing, between the end face and bottom surface of casing, four ends of test platform are fixedly attached to respectively each lifting driving-chain, VTOL (vertical take off and landing) stepper motor is installed on box top, for controlling the lifting of lifting driving-chain, drive the VTOL (vertical take off and landing) of test platform, can regulate arbitrarily the jetting height of nozzle with respect to test platform by test request, thereby realize the experiment test that carries out nozzle aerosol characteristic under different jetting heights.
Referring to Fig. 2,3, described air-channel system 7 comprises air pump 7-1, gas tank 7-2, gas circuit pressure regulator valve 7-3, gas gauge 7-4 and gas meter 7-5.Air pump is connected to gas tank by gas path pipe, and gas tank is connected to nozzle by gas path pipe, and gas gauge and gas circuit pressure regulator valve are installed on gas tank, and gas tank is provided with gas meter to the gas circuit official road of nozzle.Can grasp the consumption of gas by gas meter, gas gauge is set to ensure the safety of gas tank, can adjust the size of gaseous tension by gas circuit pressure regulator valve.
Referring to Fig. 2,3, described water circuit system 8 comprises water tank 8-1, water pump 8-2, feed water valve 8-3, water ga(u)ge 8-4, back-water valve (BWV) 8-5 and water route pressure regulator valve 8-6.Water tank is installed on bottom in casing, and water tank is connected to nozzle by waterway pipe, is provided with successively feed water valve on waterway pipe, water pump, water route pressure regulator valve and water ga(u)ge, is provided with waterway pipe connection and is back to water tank, and this segment pipe is provided with back-water valve (BWV) between water pump and water route pressure regulator valve.Can grasp the consumption of water by water ga(u)ge, feed water valve and back-water valve (BWV) are set to ensure the needs of water, can adjust the size of water pressure by water route pressure regulator valve.
Gas path pipe in described air-channel system and water circuit system and waterway pipe all adopt metallic bellows, thereby can effectively reduce vibration in gas and the water course of conveying impact on experimental measurements accuracy.
Referring to Fig. 2, 4, in the time of test nozzles jet density, grid water collector 4 is installed on test platform 5, grid water collector 4 is a rectangular parallelepiped hatch frame, its bottom surface upwards has row's dividing plate that equidistant parallel is arranged, thereby shape grid in a row in short transverse, for collecting the aerosol of nozzle ejection, the dividing plate of grid water collector adopts pinnacle type structure, thereby can farthest reduce the impact that drop rebounds on jet density distribution measuring accuracy, and the side of dividing plate is provided with rule, thereby collecting after aerosol, can directly read the quantity of collecting liquid in each grid, in addition, grid water collector is of a size of 500 × 100 × 110mm(length × wide × height), between each dividing plate, be spaced apart 8mm, thereby can be in limited spray regime the more detailed jet density distribution situation that reflects.The wall thickness of dividing plate is 2mm, can farthest reduce the impact that drop rebounds on jet density distribution measuring accuracy.Fig. 4 is the structural representation of grid water collector, the size of grid length and width is set according to the spray characteristics of aerial fog nozzle, the length of 500mm can meet collects nozzle atomizing of liquids at each point place vertically in spray regime, and the width of 100mm and the height of 110mm can make to collect liquid and in vertical axial direction, collect the water yield and meet calculation requirement.
Referring to Fig. 5, in the time of test spray droplet particle diameter, oil film water collection sheet 9 is installed on test platform 5, oil film water collection sheet is a rectangular glass sheet, on it, be evenly coated with the potpourri of vaseline and machine oil, and the volume ratio of vaseline and machine oil is 1:3, the hydrophobicity of machine oil avoids drop mass to run off, add vaseline to make drop adsorption vaseline, vaseline infiltrates in machine oil again, vaseline makes machine oil that drop is wrapped, can guarantee that according to 1:3 ratio enough machine oil can wrap drop, and utilize vaseline to play the effect that connects drop and machine oil.
Referring to Fig. 6, described laser formation system comprises laser generator 16 and CCD camera 17 and computer data processing system, laser generator 16 is installed on a side of casing, CCD camera 17 is installed on the opposite side of casing, CCD camera 17 arranges corresponding to laser generator 16, collect the light signal that laser generator produces, thereby the signal capturing is sent to computer data processing system, formation speed field pattern.
In addition, referring to Fig. 5, proving installation also further has a drainage tube 18, in test process, when experimenter opens in the process of gas circuit and water route pressure regulator valve adjusting aerosol, can be mounted to nozzle, thereby unsettled spraying is caused on one side, by the time when aerosol reaches testing requirement, then drainage tube 18 is withdrawn, thereby make the structure of test more accurate.
Proving installation of the present invention can be for the jet density of test nozzles.Detailed process is as follows, nozzle to be measured is arranged on gimbals, obtain the required spray angle of test by adjusting gimbals, grid water collector is arranged on test platform, adjust again the height of test platform by test platform jacking system, thereby obtain the required jetting height (being the vertical range on nozzle and grid water collector top) of test, drainage tube is mounted to nozzle, open gas circuit and water route pressure regulator valve adjustable pressure and hydraulic pressure, after aerosol reaches test necessary requirement, withdraw drainage tube, start test, record aerosol and start injecting time, by the time when the highest liquid level of grid water collector will reach the top, again drainage tube is mounted to nozzle, and record the aerosol end injection time, finally measure calculating, by reading the recovery water yield and the aerosol injecting time of grid water collector, calculate the jet density of this nozzle.Repeat above-mentioned flow process, regulate jetting height, spray angle, air pressure, hydraulic pressure, can carry out the test under different conditions parameter, and test range of adjustment is wide.
Proving installation of the present invention can be for the size droplet diameter of test nozzles aerosol.Detailed process is as follows, nozzle to be measured is arranged on gimbals, obtain the required spray angle of test by adjusting gimbals, oil film water collection sheet is arranged on test platform, adjust again the height of test platform by test platform jacking system, thereby obtain the required jetting height (being the vertical range of nozzle and oil film water collection sheet) of test, drainage tube is mounted to nozzle, open gas circuit and water route pressure regulator valve adjustable pressure and hydraulic pressure, after aerosol reaches test necessary requirement, withdraw drainage tube, start test, by the time when aerosol is sprayed to oil film water collection sheet, again drainage tube is mounted to nozzle, close gas and water regulating valve, take out oil film water collection sheet, by microscope, drop is carried out to grain diameter measurement.
Proving installation of the present invention can be for the velocity field of test nozzles aerosol, detailed process is as follows, nozzle to be measured is arranged on gimbals, obtain the required spray angle of test by adjusting gimbals, drainage tube is mounted to nozzle, open gas circuit and water route pressure regulator valve adjustable pressure and hydraulic pressure, after aerosol reaches test necessary requirement, withdraw drainage tube, open laser generator and CCD camera, start test, collect by CCD camera the light signal that laser generator produces, thereby the signal capturing is sent to computer data processing system, formation speed field pattern.
Finally it should be noted that: obviously, above-described embodiment is only for example of the present invention is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or variation are still among protection scope of the present invention.
Claims (10)
1. a proving installation for nozzle aerosol characteristic, comprises casing, nozzle, test platform system, gas circuit and water circuit system, and laser imaging system;
---nozzle, be connected to gas circuit and water circuit system, thereby form the required aerosol of test, nozzle is arranged under box top by gimbals, on test platform;
---test platform system, comprise can VTOL (vertical take off and landing) test platform, test platform jacking system, and test need to be arranged on grid water collector or the oil film water collection sheet on test platform according to difference;
---air-channel system, comprises air pump, gas tank, gas circuit pressure regulator valve, gas gauge and gas meter;
---water circuit system, comprises water tank, water pump, feed water valve, water ga(u)ge, back-water valve (BWV) and water route pressure regulator valve;
---laser imaging system, comprise laser generator, CCD camera and computer data processing system, laser generator is installed on a side of casing, CCD camera is installed on the opposite side of casing, CCD camera is corresponding to laser generator setting, and the signal capturing is sent to computer data processing system.
2. the proving installation of nozzle aerosol characteristic as claimed in claim 1, it is characterized in that: described test platform jacking system comprises VTOL (vertical take off and landing) stepper motor and lifting driving-chain, article four, lifting driving-chain difference at right angle setting is in the four side place of casing, between the end face and bottom surface of casing, four ends of test platform are fixedly attached to respectively each lifting driving-chain, VTOL (vertical take off and landing) stepper motor is installed, for controlling the lifting of lifting driving-chain on box top.
3. the proving installation of nozzle aerosol characteristic as claimed in claim 1 or 2, it is characterized in that: described grid water collector is a rectangular parallelepiped hatch frame, its bottom surface upwards has the dividing plate that equidistant parallel is arranged, the dividing plate of grid water collector adopts pinnacle type structure, and the side of dividing plate is provided with rule.
4. the proving installation of nozzle aerosol characteristic as claimed in claim 3, is characterized in that: the size length × wide × height of described grid water collector is 500 × 100 × 110mm mm, between dividing plate, is spaced apart 8mm, and the wall thickness of dividing plate is 2mm.
5. the proving installation of the nozzle aerosol characteristic as described in claim 1,2 or 4, it is characterized in that: described oil film water collection sheet is a rectangular glass sheet, is evenly coated with the potpourri of vaseline and machine oil on it, and the volume ratio of vaseline and machine oil is 1:3.
6. the proving installation of nozzle aerosol characteristic as claimed in claim 5, it is characterized in that: described air pump is connected to gas tank by gas path pipe, gas tank is connected to nozzle by gas path pipe, gas gauge and gas circuit pressure regulator valve are installed on gas tank, and gas tank is provided with gas meter to the gas path pipe of nozzle.
7. the proving installation of the nozzle aerosol characteristic as described in claim 1,2,4 or 6, it is characterized in that: described water tank is installed on bottom in casing, water tank is connected to nozzle by waterway pipe, on waterway pipe, be provided with successively feed water valve, water pump, water route pressure regulator valve and water ga(u)ge, is provided with waterway pipe and is communicated with recovery tank, and this segment pipe is provided with back-water valve (BWV) between water pump and water route pressure regulator valve.
8. the proving installation of nozzle aerosol characteristic as claimed in claim 7, is characterized in that: the gas path pipe in described gas circuit and water circuit system and waterway pipe all adopt metallic bellows.
9. the proving installation of the nozzle aerosol characteristic as described in claim 1,2,4,6 or 8, described proving installation also has a drainage tube.
10. utilize the proving installation of nozzle aerosol characteristic as claimed in claim 9 to carry out a nozzle aerosol characteristic test method, it is characterized in that: comprise the steps:
(1) nozzle to be measured is arranged on gimbals, obtains the required spray angle of test by adjusting gimbals;
(2) grid water collector is arranged on test platform, then adjusts the height of test platform by test platform jacking system, thereby obtain the required jetting height of test;
(3) drainage tube is mounted to nozzle, opens gas and water regulating valve adjustable pressure and hydraulic pressure, after aerosol reaches test necessary requirement, withdraw drainage tube, start the test of nozzle aerosol characteristic;
(4) open laser generator and CCD camera, collect by CCD camera the light signal that laser generator produces, thereby the signal capturing is sent to computer data processing system, formation speed field pattern;
(5) record aerosol and start injecting time, by the time when the highest liquid level of grid water collector will reach the top, again drainage tube is mounted to nozzle, and records the aerosol end injection time, by reading the recovery water yield and the aerosol injecting time of grid water collector, calculate the jet density of this nozzle;
(6) oil film water collection sheet is arranged on test platform, withdraws drainage tube, when aerosol is sprayed to oil film water collection sheet by the time, again drainage tube is mounted to nozzle, close gas and water regulating valve, take out oil film water collection sheet, by microscope, drop is carried out to grain diameter measurement;
(7) repeat above-mentioned flow process, regulate jetting height, spray angle, air pressure, hydraulic pressure, carries out the nozzle aerosol characteristic test under different conditions parameter.
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Application publication date: 20140514 |