CN103234573A - Dust environment simulation equipment - Google Patents
Dust environment simulation equipment Download PDFInfo
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- CN103234573A CN103234573A CN2013101402905A CN201310140290A CN103234573A CN 103234573 A CN103234573 A CN 103234573A CN 2013101402905 A CN2013101402905 A CN 2013101402905A CN 201310140290 A CN201310140290 A CN 201310140290A CN 103234573 A CN103234573 A CN 103234573A
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Abstract
The invention discloses dust environment simulation equipment, which comprises a dust generation device, a wind tunnel, a dust collector and a fan. The wind tunnel comprises a wind inlet section, a turbulence section and a testing section. The inner passage of the wind inlet section is horn-shaped. The dust outlet of the dust generation device is formed at the large-aperture end of the wind inlet section. The small-aperture end of the wind inlet section is communicated with the turbulence section. A turbulence structure is arranged on the turbulence section. One end of the testing section is communicated with the turbulence section and the other end of the testing section is communicated with the dust collector. The fan is communicated with the dust collector. An observation window which can be opened and closed is arranged on the testing section. A dust concentration sensor which is used for detecting internal dust concentration is arranged in the testing section and is communicated with an electric control device. The electric control device is electrically connected with the dust generation device. The simulation equipment can simulate a uniform-concentration dust environment, the concentration is adjustable and testing results obtained through product testing by using the simulation equipment are more accurate.
Description
Technical field
The present invention relates to a kind of dust atmosphere analog machine, this analog machine can be used for testing or the detection check field of instrument.
Background technology
The environmental simulation technology is a new marginal technology, mainly studies the imageneering technology of various physical environments and the experimental technique of product under simulated environment; The ground environment analog machine mainly contains following a few class: low temperature environment simulation, hot environment simulation, hygrothermal environment simulation, solar irradiation simulation, sand dust environmental simulation, rain environmental simulation, dipping simulation, sour environment simulation, the simulation of explosive atmospheric environment, accumulated ice/sleet environmental simulation and mould environmental simulation etc.Some environment are in case simulation can be in interior environmental reliability test, accuracy correction or the long duration test etc. of carrying out product after coming out.Immediate with the dust atmosphere simulation in the last subseries is the sand and dust environmental simulations, because sand and dust are different with the particle diameter of dust, the concentration of dust, uniformity coefficient etc. are difficult to control more more with sand and dust, therefore, temporarily do not have to simulate more uniformly at present the analog machine of dust atmosphere.
Summary of the invention
Technical matters to be solved by this invention is: a kind of dust atmosphere analog machine is provided, and this analog machine can simulate the uniform dust atmosphere of concentration, and concentration is adjustable, and the test structure that the test that utilizes this analog machine to carry out product obtains is more accurate.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of dust atmosphere analog machine, comprise dust generating means, wind-tunnel, fly-ash separator and blower fan, described wind-tunnel comprises wind inlet section, turbulent flow section, test section, the internal channel flue of described wind inlet section, the meal outlet of described dust generating means is arranged at the heavy caliber end of wind inlet section, and the small-caliber end of wind inlet section is communicated with the turbulent flow section, and this turbulent flow section is provided with turbulent structure; Test section one end and the circulation of turbulent flow section, the other end is communicated with described fly-ash separator, described blower fan is communicated with fly-ash separator, described test section is provided with view window to be opened/closed, be provided with the sensor of dust concentration that detects inner dust concentration in the test section, this sensor of dust concentration is communicated with electric control gear, and this electric control gear and dust generator electrically connect.
As a kind of preferred scheme, described turbulent structure comprises the hole enlargement turbulent flow passageway, and the bore of this hole enlargement turbulent flow passageway is increased to test section gradually by the small-caliber end of wind inlet section.
As a kind of preferred scheme, the passage bore of described hole enlargement turbulent flow passageway increases gradually and forms the circular cone table top.
As a kind of preferred scheme, described dust generating means comprises the dust feeder hopper, stirs the output chamber, is with conveying device, disperses dispenser and dust delivery line; The dust feeder hopper is installed on the upper port that stirs the output chamber, fixedly have on the dust feeder hopper to stretch into and stir the indoor stirring poking device of output, the base plate of described stirring output chamber is provided with discharging opening, the sidewall of this stirring output chamber is provided with the mouth that passes through that is communicated with discharging opening, the conveying zone face of described band conveying device is arranged at the below of discharging opening, described dispersion dispenser be communicated with the dust airborne dust that will carry on the zone face by mouth, described dust delivery line is communicated with disperseing dispenser, and this dust delivery line is communicated with the compressed air inlet.
As a kind of preferred scheme, described dispersion dispenser comprises shell, rotates the hairbrush be installed on the shell, this shell with is communicated with by the hole, this hairbrush is rotated by the propulsion system driving, the maximum circular trace that the hairbrush rotation produces is tangent with the conveying zone face, and described shell is provided with the supply air port.
As a kind of preferred scheme, described stirring poking device comprises shaft, material poking fork and the propulsion system that drive the shaft rotation, this shaft vertically rotates to be installed on the dust feeder hopper and to extend to stirring to be exported indoor, described material poking fork comprises fixed head and is arranged at several fork plates of fixed head periphery circumference uniform distribution, space between adjacent two fork plates constitutes the material toggling space, the fixed head of described material poking fork is fixed on the shaft, clearance fit between the bottom surface of material poking fork and the upper surface of base plate.
As a kind of preferred scheme, described test section is provided with the concentration display screen, and this concentration display screen is connected with electric control gear.
After having adopted technique scheme, effect of the present invention is: because the wind-tunnel in this analog machine arranges turbulent result, after dust enters in the wind-tunnel, make dust spread in the test section uniformly through turbulent flow, offer observation ward on the test section, can be convenient to putting into of product, thereby guarantee the structure true and accurate more of the test of product, and the sensor of dust concentration that is arranged on test section can detect inner concentration in real time, the dust output quantity that electric control gear control dust generating means is arranged again, thus control can obtain the uniform dust atmosphere of a certain concentration more accurately.Test for product provides good environmental baseline like this, and the accuracy of test findings and validity are improved.
Again because described dust generating means comprises dust feeder hopper, stirring output chamber, band conveying device, dispersion dispenser and dust delivery line; The dust feeder hopper is installed on the upper port that stirs the output chamber, fixedly have on the dust feeder hopper to stretch into and stir the indoor stirring poking device of output, the base plate of described stirring output chamber is provided with discharging opening, the sidewall of this stirring output chamber is provided with the mouth that passes through that is communicated with discharging opening, the conveying zone face of described band conveying device is arranged at the below of discharging opening, described dispersion dispenser be communicated with the dust airborne dust that will carry on the zone face by mouth, described dust delivery line is communicated with disperseing dispenser, this dust delivery line is communicated with the compressed air inlet, therefore, the dust of this dust generating means is entered by discharging opening, the thickness of base plate, the size of discharging opening, and the transfer rate of band conveying device can determine to be delivered to the Dust Capacity that disperses in the dispenser, because, the thickness of base plate, the size of discharging opening is set consistent, so only need the transfer rate of control band conveying device can change the dust operational throughput, and then can make things convenient for the dust concentration value in the real-time monitoring test section.
Because comprising shell, rotation, described dispersion dispenser is installed on the hairbrush on the shell again, this shell be communicated with by the hole, this hairbrush drives rotation by propulsion system, the maximum circular trace that the hairbrush rotation produces is tangent with the conveying zone face, described shell is provided with the supply air port, therefore, disperse the dispenser can be with the abundant airborne dust in the enclosure of the dust on the conveying belt, thereby guarantee that dust fully exports.
Again because described stirring poking device comprises shaft, material poking fork and the propulsion system that drive the shaft rotation, this shaft vertically rotates to be installed on the dust feeder hopper and to extend to stirring to be exported indoor, described material poking fork comprises fixed head and is arranged at several fork plates of fixed head periphery circumference uniform distribution, space between adjacent two fork plates constitutes the material toggling space, the fixed head of described material poking fork is fixed on the shaft, clearance fit between the bottom surface of material poking fork and the upper surface of base plate, therefore, material poking fork is driven by shaft will stir indoor intermittent the dialling in the discharging opening of dust of output, the full dust of filling in the discharging opening when guaranteeing each discharging, thus the precision of dust output improved.Shaft is that the smooth output of dust facilitates, and avoids the upper strata dust to harden or leak not smooth situation down taking place.
As a kind of preferred scheme, described test section is provided with the concentration display screen, and this concentration display screen is connected with electric control gear, therefore, and dust concentration situation in the observation test section more intuitively.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structural representation of the dust generating means of the embodiment of the invention;
In the accompanying drawing: 1. dust generating means; 11. dust feeder hopper; 12. stir the output chamber; 121. base plate; 122. discharging opening; 13. band conveying device; 14. dispersion dispenser; 15. dust delivery line; 151. air inlet; 16. stirring poking device; 161. stirring motor; 162. main shaft; 163. material poking fork; 164. first puddler; 165. backgauge compacting block; 166. second puddler; 2. wind-tunnel; 21. wind inlet section; 22. turbulent flow section; 23. test section; 3. fly-ash separator; 4. blower fan; 5. sensor of dust concentration; 6. view window; 7. air velocity transducer; 8. electric control gear.
Embodiment
The present invention is described in further detail below by specific embodiment.
As shown in Figure 1, 2, a kind of dust atmosphere analog machine, comprise dust generating means 1, wind-tunnel 2, fly-ash separator 3 and blower fan 4, described wind-tunnel 2 comprises wind inlet section 21, turbulent flow section 22, test section 23, the internal channel flue of described wind inlet section, the meal outlet of described dust generating means 1 is arranged at the heavy caliber end of wind inlet section 21, and the small-caliber end of wind inlet section 21 is communicated with turbulent flow section 22, and this turbulent flow section 22 is provided with turbulent structure; Described turbulent structure comprises the hole enlargement turbulent flow passageway, and the bore of this hole enlargement turbulent flow passageway is increased to test section 23 gradually by the small-caliber end of wind inlet section 21.Wherein, the mode that internal diameter increases is linear the increase, thereby the passage bore of described hole enlargement turbulent flow passageway increases formation circular cone table top gradually.Certainly, also can be for arc curve increase, namely described hole enlargement turbulent flow passageway is after axially cuing open, and the hatching line that its internal orifice wall forms is the arc curve shape.
Described dust generating means 1 comprises dust feeder hopper 11, stirs output chamber 12, is with conveying device 13, disperses dispenser 14 and dust delivery line 15; Dust feeder hopper 11 is installed on the upper port that stirs output chamber 12, fixedly have on the dust feeder hopper 11 and stretch into the stirring poking device 16 that stirs in the output chamber 12, the base plate 121 of described stirring output chamber 12 is provided with discharging opening 122, the sidewall of this stirring output chamber 12 is provided with the mouth that passes through that is communicated with discharging opening 122, the conveying zone face of described band conveying device 13 is arranged at the below of discharging opening 122, described dispersion dispenser 14 be communicated with the dust airborne dust that will carry on the zone face by mouth, described dust delivery line 15 is communicated with disperseing dispenser 14, and this dust delivery line 15 is communicated with the compressed air inlet.
Described dispersion dispenser 14 comprises shell, rotates the hairbrush that is installed on the shell, this shell be communicated with by the hole, this hairbrush drives rotation by propulsion system, these propulsion system are the motor that is fixed on the shell, the output shaft of motor is communicated with brush axle, the maximum circular trace that the hairbrush rotation produces is tangent with the conveying zone face, and described shell is provided with the supply air port.It is mobile that the pressurized air effect makes dust delivery line 15 produce air, and then dust delivery line 15 generation negative pressure, and the shell of dispersion dispenser 14 includes the dust air and just is brought into dust delivery line 15, and then is drained in the wind inlet section 21 of wind-tunnel 2.
Described stirring poking device 16 comprises shaft, material poking fork 163 and the propulsion system that drive the shaft rotation, these propulsion system are the stirring motor 161 that is fixed on dust feeder hopper 11 upper ends, this shaft comprises that vertical rotation is installed on the dust feeder hopper 11 and extends to the main shaft 162 that stirs in the output chamber 12, this main shaft 162 is provided with first puddler 164 and second puddler 166, first puddler 164 extends to dust feeder hopper 11 by the lower end complications of main shaft 162, and press close to the section of the pressing close to shape of this first puddler 164 and inner wall shape approximate match with the inwall of dust feeder hopper.The dust that 166 pairs of second puddlers stir in the output chamber 12 stirs, and by stirring dust feeder hopper 11 dust interior and that stir in the output chamber 12 is become flexible, and is convenient to the discharging of dust whereabouts.Described material poking fork 163 comprises fixed head and is arranged at several fork plates of fixed head periphery circumference uniform distribution, in the present embodiment, the number of fork plate is six, space between adjacent two fork plates constitutes the material toggling space, the fixed head of described material poking fork 163 is fixed on the shaft, clearance fit between the upper surface of the bottom surface of material poking fork 163 and base plate 121, material poking fork 163 is during by main shaft 162 driven rotary, material toggling gap between the fork plate is intermittent to be communicated with discharging opening 122, thereby dust is dialled in the discharging opening 122, and then be delivered in the dispersion dispenser 14 by band conveying device 13.In order to make the Dust Capacity that enters in the discharging opening 122 reach consistent at every turn, the inwall that stirs output chamber 12 is provided with backgauge compacting block 165, the last plane parallel of the lower plane of this backgauge compacting block 165 and fork plate and between leave 1, the gap of 2mm, when fork plate rotates, the dust of top, plane is blocked by backgauge compacting block 165 on the fork plate, material toggling space between the fork plate is then passed through from the below of backgauge compacting block 165, dust in the material toggling space is compacted, thereby the density that can guarantee the dust in the material toggling space into keeps basically identical, and then has guaranteed the Dust Capacity unanimity of discharging opening 122.
The course of work of the present invention is: the generation dust that the dust generating means is quantitative also is injected to it in wind-tunnel 2, produces air by blower fan 4 in the wind-tunnel 2 and flows, and produces negative pressure at wind inlet section 21 dust is sucked, because wind inlet section 21 is tubaeform, therefore.Entered into when small-bore by heavy caliber, the dust-contained airflow flow velocity increases, then enter into turbulent flow section 22 at once again, and the passage of turbulent flow section 22 becomes the circular cone table top, therefore, the dust-contained airflow diffusion, the flow velocity rapid drawdown, make dust-contained airflow that turbulent flow take place, thereby dust is diffused into uniformly in the environment of test section 23, through sensor of dust concentration 5 detect can be on the concentration display screen display density intuitively, after difference on the xsect of test section 23 arranges four sensor of dust concentration 5, concentration deviation between each sensor of dust concentration 5 is about 5%, and is up to specification.Like this, with product to be tested, for example long duration test that can carry out under the dust atmosphere at test section 23, the functional reliability test under the dust atmosphere; Also can carry out the accuracy verification of instrument at test section 23, the sensor of dust concentration 5 of one prior confirmation sensor of dust concentration 5 and a correction to be detected accurately can be put in the test section 23, detection obtains two concentration numerical value, again sensor of dust concentration to be corrected 5 is proofreaied and correct adjustment, finally make it accurate, at this moment, the uniformity coefficient of the dust of test section 23 is required higher, the dust atmosphere analog machine among the present invention satisfies accuracy verification requirement together fully.
Claims (7)
1. dust atmosphere analog machine, comprise dust generating means, wind-tunnel, fly-ash separator and blower fan, it is characterized in that: described wind-tunnel comprises wind inlet section, turbulent flow section, test section, the internal channel flue of described wind inlet section, the meal outlet of described dust generating means is arranged at the heavy caliber end of wind inlet section, the small-caliber end of wind inlet section is communicated with the turbulent flow section, and this turbulent flow section is provided with turbulent structure; Test section one end and the circulation of turbulent flow section, the other end is communicated with described fly-ash separator, described blower fan is communicated with fly-ash separator, described test section is provided with view window to be opened/closed, be provided with the sensor of dust concentration that detects inner dust concentration in the test section, this sensor of dust concentration is communicated with electric control gear, and this electric control gear and dust generator electrically connect.
2. a kind of dust atmosphere analog machine as claimed in claim 1, it is characterized in that: described turbulent structure comprises the hole enlargement turbulent flow passageway, the bore of this hole enlargement turbulent flow passageway is increased to test section gradually by the small-caliber end of wind inlet section.
3. a kind of dust atmosphere analog machine as claimed in claim 2 is characterized in that: the passage bore of described hole enlargement turbulent flow passageway increases gradually and forms the circular cone table top.
4. as each described a kind of dust atmosphere analog machine of claim 1 to 3, it is characterized in that: described dust generating means comprises the dust feeder hopper, stirs the output chamber, is with conveying device, disperses dispenser and dust delivery line; The dust feeder hopper is installed on the upper port that stirs the output chamber, fixedly have on the dust feeder hopper to stretch into and stir the indoor stirring poking device of output, the base plate of described stirring output chamber is provided with discharging opening, the sidewall of this stirring output chamber is provided with the mouth that passes through that is communicated with discharging opening, the conveying zone face of described band conveying device is arranged at the below of discharging opening, described dispersion dispenser be communicated with the dust airborne dust that will carry on the zone face by mouth, described dust delivery line is communicated with disperseing dispenser, and this dust delivery line is communicated with the compressed air inlet.
5. a kind of dust atmosphere analog machine as claimed in claim 4, it is characterized in that: described dispersion dispenser comprises shell, rotates the hairbrush that is installed on the shell, this shell be communicated with by the hole, this hairbrush drives rotation by propulsion system, the maximum circular trace that the hairbrush rotation produces is tangent with the conveying zone face, and described shell is provided with the supply air port.
6. a kind of dust atmosphere analog machine as claimed in claim 5, it is characterized in that: described stirring poking device comprises shaft, material poking fork and the propulsion system that drive the shaft rotation, this shaft vertically rotates to be installed on the dust feeder hopper and to extend to stirring to be exported indoor, described material poking fork comprises fixed head and is arranged at several fork plates of fixed head periphery circumference uniform distribution, space between adjacent two fork plates constitutes the material toggling space, the fixed head of described material poking fork is fixed on the shaft, clearance fit between the bottom surface of material poking fork and the upper surface of base plate.
7. a kind of dust atmosphere analog machine as claimed in claim 6, it is characterized in that: described test section is provided with the concentration display screen, and this concentration display screen is connected with electric control gear.
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