CN114235322A - Horizontal wind tunnel for dust environment simulation device - Google Patents
Horizontal wind tunnel for dust environment simulation device Download PDFInfo
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- CN114235322A CN114235322A CN202111515111.2A CN202111515111A CN114235322A CN 114235322 A CN114235322 A CN 114235322A CN 202111515111 A CN202111515111 A CN 202111515111A CN 114235322 A CN114235322 A CN 114235322A
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- 239000000428 dust Substances 0.000 title claims abstract description 105
- 238000004088 simulation Methods 0.000 title claims abstract description 30
- 238000009792 diffusion process Methods 0.000 claims abstract description 45
- 238000009827 uniform distribution Methods 0.000 claims abstract description 41
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 230000008859 change Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 8
- 230000001502 supplementing effect Effects 0.000 claims 2
- 238000009826 distribution Methods 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0096—Investigating consistence of powders, dustability, dustiness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a horizontal wind tunnel for a dust environment simulation device, which comprises a uniformly-mixed structure, wherein the upstream of the uniformly-mixed structure is communicated with a sleeved conical compression and diffusion structure, the downstream of the uniformly-mixed structure is communicated with a convergence structure, and the uniformly-mixed structure is provided with a window; the big end of the conical compression and diffusion structure is communicated with the mixing and uniform distribution structure, and the small end of the conical compression and diffusion structure is communicated with the air inlet and dust inlet assembly. The dust-containing gas is firstly concentrated in the conical compression and diffusion structure of the small area and then is dispersed and diffused into the uniformly-distributed mixing structure, the distribution and diffusion uniformity is high, and the calibration/calibration precision of the dust concentration detection instrument to be calibrated is high.
Description
Technical Field
The invention belongs to the technical field of dust environment simulation, and particularly relates to a horizontal wind tunnel for a dust environment simulation device.
Background
At present stage, dust concentration measuring instrument's calibration is mostly accomplished through dust environment analog device, the horizontal wind-tunnel need be used in the production and the distribution of simulation dust, at present, the piece needs to be made into with simulation powder such as buggy earlier to the device of sending out dust in the horizontal wind-tunnel, later install the block on adjustment mechanism, in operation, through the brush, adjustment mechanism and the cooperation of admitting air make the dust diffuse, and carry to install and wait to detect/mark on the part of dust concentration measuring instrument, adopt this mode, diffuse simulation powder distributes and the diffusion homogeneity is poor, can influence the check-up/calibration precision of dust concentration measuring instrument.
Disclosure of Invention
The invention provides a horizontal wind tunnel for a dust environment simulation device, which aims to achieve the purposes of improving the diffusion and distribution uniformity of simulated dust and ensuring the calibration/calibration precision of a dust concentration detection instrument.
In order to solve the technical problems, the technical scheme of the invention is as follows: a horizontal wind tunnel for a dust environment simulation device comprises a mixing and uniform distribution structure, wherein the upstream of the mixing and uniform distribution structure is communicated with a sleeved conical compression and diffusion structure, the downstream of the mixing and uniform distribution structure is communicated with a convergence structure, and a window is arranged on the mixing and uniform distribution structure;
the big end of the conical compression and diffusion structure is communicated with the uniformly-distributed mixing structure, and the small end of the conical compression and diffusion structure is communicated with an air inlet and dust inlet assembly.
As an improvement, the conical compression and diffusion structure comprises an outer cone arranged on the mixing and uniform distribution structure, an inner cone is sleeved in the outer cone, a diffusion channel is formed between the outer cone and the inner cone, and a plurality of support connecting plates are annularly arranged between the outer cone and the inner cone at two ends;
the space formed between the two connected supporting and connecting plates is communicated with the mixing and uniform distribution structure and the air inlet and dust inlet assembly.
As a further improvement, one end of the inner cone, which is close to the air and dust inlet assembly, is provided with a tip, and the inner cone is of a closed hollow structure; one end of the outer cone, which is close to the air inlet and dust inlet assembly, is arranged to be a flat end and is arranged together with the air inlet and dust inlet assembly.
As a further improvement, the air inlet and dust inlet assembly comprises an air inlet main pipe communicated with the diffusion channel and connected with the flat end of the outer cone, one side of the air inlet main pipe is provided with an obliquely arranged dust inlet pipe, and the dust inlet pipes extend into the air inlet main pipe and are communicated with each other.
As a further improvement, the mixing and uniform distribution structure comprises a mixing cylinder which is provided with a mixing cavity and is of a conical change structure, the large end of the mixing cylinder is communicated with a uniform distribution cylinder extending in an equal diameter mode, the small end of the mixing cylinder is provided with an installation plate, and the outer cone is installed on the installation plate; the mounting plate is provided with a feed hole correspondingly arranged with the inner cone, and the diffusion channel is communicated with the mixing cavity through the feed hole.
As a further improvement, a plurality of annularly arranged air replenishing holes are formed in the mounting plate on the periphery of the outer cone, and the air replenishing holes are communicated with the mixing cavity.
As a further improvement, a plurality of annularly arranged air replenishing holes are formed in the mounting plate on the periphery of the outer cone, and the air replenishing holes are communicated with the mixing cavity.
As a further improvement, the cloth-equalizing cylinder is assembled by a plurality of sections of cylinders, and the cylinders are provided with detection sensors and access doors; the window is also disposed on the barrel.
As a further improvement, the gathering structure is a gathering cylinder with a conical change, the large end of the gathering cylinder is communicated with the uniform distribution cylinder, and the small end of the gathering cylinder is communicated with a communicating cylinder with the same diameter.
As a still further improvement, the axial center lines of the communicating cylinder, the converging cylinder, the mixing cylinder, the uniform distribution cylinder, the air inlet manifold and the outer cone are arranged in a collinear manner.
After the technical scheme is adopted, the invention has the effects that:
the horizontal wind tunnel for the dust environment simulation device comprises a uniformly-mixed structure, wherein the upstream of the uniformly-mixed structure is communicated with a sleeved conical compression and diffusion structure, the downstream of the uniformly-mixed structure is communicated with a convergence structure, and a window is arranged on the uniformly-mixed structure; based on the structure, when the dust environment simulation device works with a horizontal wind tunnel, the dust generating device sends simulation dust with proper concentration into the air inlet and dust inlet assembly, then the air inlet and dust inlet assembly sends the simulation dust such as coal dust into the conical compression and diffusion structure, the dust-containing gas is compressed in a small area through the conical compression and diffusion structure, then the simulation dust is diffused to the mixing and uniform distribution structure to be uniformly mixed and dispersed, then the calibration/calibration of the dust concentration detection instrument to be calibrated and installed on a window is completed, and then the dust-containing gas is converged through the converging structure so as to be convenient for subsequent treatment of the dust-containing gas.
In conclusion, by adopting the horizontal wind tunnel for the dust environment simulation device, the dust-containing gas is firstly concentrated in the conical compression and diffusion structure of the small area and then is dispersed and diffused into the uniformly-mixed structure, the distribution and diffusion uniformity is high, and the calibration/calibration precision of the dust concentration detection instrument to be calibrated is high.
The conical compression and diffusion structure comprises an outer cone arranged on the mixing and uniform distribution structure, an inner cone is sleeved in the outer cone, a diffusion channel is formed between the outer cone and the inner cone, and a plurality of support connecting plates are annularly arranged between the outer cone and the inner cone at two ends; the space formed between the two connected supporting connecting plates is communicated with the mixing and uniform distribution structure and the air inlet and dust inlet assembly, so that the outer cone and the inner cone are fixedly connected through the supporting connecting plates, the dust-containing gas is fed and discharged through the diffusion channel, meanwhile, the dust-containing gas is compressed and diffused in a small area into the mixing and uniform distribution structure through the diffusion channel, the structure is simple, the conception is ingenious, and a foundation is laid for uniform distribution and diffusion of the dust-containing gas.
One end of the inner cone, which is close to the air inlet and dust inlet assembly, is provided with a tip, and the inner cone is of a closed hollow structure; one end of the outer cone, which is close to the air inlet and dust inlet assembly, is arranged to be a flat end and is arranged together with the air inlet and dust inlet assembly, so that the installation of the air inlet and dust inlet assembly is facilitated, and the guide of dust-containing gas is facilitated; because the inner cone is a closed hollow structure, the structure is simple, the weight is light, and the simulated dust can be effectively prevented from entering the inner cone.
Because the air inlet and dust inlet assembly comprises an air inlet main pipe which is communicated with the diffusion channel and is connected with the flat end of the outer cone, one side of the air inlet pipe is provided with the dust inlet main pipe which is arranged obliquely, and the dust inlet pipe extends into the air inlet main pipe and is communicated with the air inlet main pipe, air is supplied through the air inlet main pipe, the simulated dust generated by the pulse type dust generating device is sent into the air inlet main pipe through the dust inlet pipe, and the simulated dust is sent into the diffusion channel through the continuous air supply of the air inlet main pipe, the structure is simple, and the sending effect of the simulated dust is good; because it sets up on the intake pipe to advance the dirt pipe slope to realize simulating the dust through this structure and send into on gaseous direction of delivery, be favorable to the mixture of gaseous and simulation dust.
The mixing and uniform distribution structure comprises a mixing cylinder which is provided with a mixing cavity and has a conical change structure, the large end of the mixing cylinder is communicated with a uniform distribution cylinder extending in an equal diameter way, the small end of the mixing cylinder is provided with an installation plate, and an outer cone is installed on the installation plate; the mounting plate is provided with a feed hole which is arranged corresponding to the inner cone, and the diffusion channel is communicated with the mixing cavity through the feed hole; therefore, through the combined structure of the mixing cylinder and the mounting plate, the mounting of the air inlet and dust inlet assembly is facilitated, and the inlet and the output of the simulated dust and the gas into the uniform distribution cylinder are not influenced; because the mixing drum is set to the conical change structure, the mounting plate is arranged at the small end of the mixing drum, and the conical change structure of the mixing drum is utilized to enable the mixed simulated dust and gas to enter the mixing drum and the uniform distribution drum to be gradually diffused from a small area to a large area in a transition mode, so that the uniformity of diffusion and distribution can be guaranteed.
Because be located and be equipped with the tonifying qi hole that a plurality of rings were arranged on the outer peripheral mounting panel of outer cone, tonifying qi hole and hybrid chamber intercommunication to after simulation dust and the gas after the mixture entered into the hybrid chamber through diffusion channel, the tonifying qi hole through annular distribution came and came the input gas in the hybrid chamber (be equipped with the air exhauster on the dust environment simulation equipment, air exhauster work, gas can be introduced the hybrid chamber through the tonifying qi hole), is favorable to promoting the homogeneity of simulation dust distribution and diffusion.
The cloth-equalizing cylinder is assembled by a plurality of sections of cylinders, and the cylinders are provided with detection sensors and access doors; the window also sets up on the barrel, simple structure, and the shaping of equipartition section of thick bamboo is convenient, and be convenient for maintain and to detecting sensor's installation etc..
The gathering structure is a gathering barrel with conical change, the large end of the gathering barrel is communicated with the uniform distribution barrel, and the small end of the gathering barrel is communicated with the communicating barrel with equal diameter.
Because the axial central lines of the communication cylinder, the gathering cylinder, the mixing cylinder, the uniform distribution cylinder, the air inlet main pipe and the outer cone are arranged in a collinear way, the horizontal arrangement of the horizontal wind tunnel for the dust environment simulation device is realized, and the conveying and the uniform distribution of dust-containing gas are facilitated.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the mixing and uniform distribution structure and the conical compression and diffusion structure and the matching structure of the air inlet and dust inlet assembly in FIG. 1;
FIG. 3 is a schematic structural view of the outer cone and the air and dust intake assembly of FIG. 2 with the outer cone removed;
FIG. 4 is a side view (air intake, dust intake assembly side) of FIG. 2;
FIG. 5 is an enlarged view of A in FIG. 4;
FIG. 6 is a cross-sectional view of FIG. 2;
FIG. 7 is an enlarged view of B in FIG. 6;
wherein, 1-a mixing and uniform distribution structure; 101-a mixing chamber; 102-a mixing drum; 103-a mounting plate; 104-a feed hole; 2-conical compression, diffusion structures; 201-outer cone; 202-inner cone; 203-diffusion channel; 204-support connection plate; 3-air inlet and dust inlet assembly; 301-intake manifold; 302-a dust inlet pipe; 4-air supply hole; 5-cloth homogenizing cylinder; 501-window; 502-access door; 6-a convergence structure; 601-a convergence cylinder; 602-communicating cylinder.
Detailed Description
The present invention is described in further detail below with reference to specific examples.
As shown in fig. 1, fig. 2, fig. 6 to fig. 7, a horizontal wind tunnel for a dust environment simulation device comprises a mixing and uniformly distributing structure 1, wherein the upstream of the mixing and uniformly distributing structure 1 is communicated with a sleeved conical compression and diffusion structure 2, the downstream of the mixing and uniformly distributing structure 1 is communicated with a convergence structure 6, and the mixing and uniformly distributing structure 1 is provided with a window 501 for installing a dust concentration detection instrument to be detected/calibrated; the big end of the conical compression and diffusion structure 2 is communicated with the mixing and uniform distribution structure 1, and the small end of the conical compression and diffusion structure 2 is communicated with an air inlet and dust inlet assembly 3.
As shown in fig. 2 to 7, the conical compressing and diffusing structure 2 comprises an outer cone 201 mounted on the mixing and uniform distributing structure 1, an inner cone 202 is sleeved inside the outer cone 201, a diffusing channel 203 is formed between the outer cone 201 and the inner cone 202, and a plurality of supporting and connecting plates 204 are annularly arranged between the outer cone 201 and the inner cone 202 at two ends; the space formed between the two connected supporting connection plates 204 is communicated with the mixing and uniform distribution structure 1 and the air inlet and dust inlet assembly 3. In this embodiment, the inner cone 202 is a closed hollow structure; the number of the supporting connecting plates 204 is 3, and the supporting connecting plates are distributed in an annular array; the end of the inner cone 202 close to the air inlet and dust inlet assembly 3 is set to be a tip, and the end of the outer cone 201 close to the air inlet and dust inlet assembly 3 is set to be a flat end and is arranged together with the air inlet and dust inlet assembly 3.
The air inlet and dust inlet assembly 3 comprises an air inlet main pipe 301 communicated with the diffusion channel 203 and connected with the flat end of the outer cone 201, a dust inlet pipe 302 is arranged on one side of the air inlet main pipe 301, the dust inlet pipe 302 extends into the air inlet main pipe 301 and is communicated with each other, preferably, the dust inlet pipe 302 is obliquely arranged on the air inlet main pipe 301, and the smaller the inclination angle of the dust inlet pipe 302 is, the better (see fig. 5).
The mixing and uniform distribution structure 1 comprises a mixing cylinder 102 with a mixing cavity 101, one end of the mixing cylinder 102 is through, the other end is provided with a mounting plate 103, and an outer cone 201 is mounted on the mounting plate 103; the mounting plate 103 is provided with a feed hole 104 corresponding to the inner cone 202, and the diffusion channel 203 is communicated with the mixing cavity 101 through the space formed between the feed hole 104 and the two support connecting plates 204. Preferably, the mixing cylinder 102 is provided with a conical change structure, the mounting plate 103 is arranged at the small end of the mixing cylinder 102 (see fig. 2 and 6), and the large end of the mixing cylinder 102 is communicated with the uniform distribution cylinder 5 extending in an equal diameter.
In the scheme, a plurality of air supply holes 4 arranged in an annular array are formed in the mounting plate 103 positioned on the periphery of the outer cone 201, and the air supply holes 4 are communicated with the mixing cavity 101; the air supply hole 4 is preferably a long hole; the inner wall of the outer cone 201 and the outer wall of the inner cone 202 are coated with a coating to prevent dust from adhering.
The uniform distribution barrel 5 is assembled by a plurality of sections of barrel bodies, and the barrel bodies are provided with detection sensors (not shown in the figure) and access doors 502; the window 501 is also provided on the barrel.
The convergence structure 6 is a convergence tube 601 with a conical change, the large end of the convergence tube 601 is communicated with the uniform cloth tube 5, and the small end of the convergence tube 6 is communicated with a communicating tube 602 with the same diameter; the axial central lines of the communicating cylinder 602, the converging cylinder 601, the mixing cylinder 102, the uniform distribution cylinder 5, the air inlet main pipe 301 and the outer cone 201 are arranged in a collinear way.
The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and alterations made to the technical solution of the present invention without departing from the spirit of the present invention are intended to fall within the scope of the present invention defined by the claims.
Claims (9)
1. The utility model provides a horizontal wind-tunnel for dust environment analogue means which characterized in that: the device comprises a mixing and uniform distribution structure, wherein the upstream of the mixing and uniform distribution structure is communicated with a sleeved conical compression and diffusion structure, the downstream of the mixing and uniform distribution structure is communicated with a convergence structure, and a window is arranged on the mixing and uniform distribution structure;
the big end of the conical compression and diffusion structure is communicated with the uniformly-distributed mixing structure, and the small end of the conical compression and diffusion structure is communicated with an air inlet and dust inlet assembly.
2. The horizontal wind tunnel for a dust environment simulation device according to claim 1, wherein: the conical compression and diffusion structure comprises an outer cone arranged on the mixing and uniform distribution structure, an inner cone is sleeved in the outer cone, a diffusion channel is formed between the outer cone and the inner cone, and a plurality of support connecting plates are annularly arranged between the outer cone and the inner cone at two ends;
the space formed between the two connected supporting and connecting plates is communicated with the mixing and uniform distribution structure and the air inlet and dust inlet assembly.
3. The horizontal wind tunnel for a dust environment simulation device according to claim 2, wherein: one end of the inner cone, which is close to the air inlet and dust inlet assembly, is provided with a tip, and the inner cone is of a closed hollow structure; one end of the outer cone, which is close to the air inlet and dust inlet assembly, is arranged to be a flat end and is arranged together with the air inlet and dust inlet assembly.
4. A horizontal wind tunnel for a dust environment simulation apparatus according to claim 3, wherein: the air inlet and dust inlet assembly comprises an air inlet main pipe communicated with the diffusion channel and connected with the flat end of the outer cone, one side of the air inlet main pipe is provided with a dust inlet pipe obliquely arranged, and the dust inlet pipe extends to the inside of the air inlet main pipe and is communicated with the inside of the air inlet main pipe.
5. The horizontal wind tunnel for a dust environment simulation device according to claim 4, wherein: the mixing and uniform distribution structure comprises a mixing cylinder which is provided with a mixing cavity and is of a conical change structure, the large end of the mixing cylinder is communicated with a uniform distribution cylinder extending in an equal diameter mode, the small end of the mixing cylinder is provided with an installation plate, and the outer cone is installed on the installation plate; the mounting plate is provided with a feed hole correspondingly arranged with the inner cone, and the diffusion channel is communicated with the mixing cavity through the feed hole.
6. The horizontal wind tunnel for a dust environment simulation device according to claim 5, wherein: and the mounting plate positioned on the periphery of the outer cone is provided with a plurality of air supplementing holes which are annularly arranged, and the air supplementing holes are communicated with the mixing cavity.
7. The horizontal wind tunnel for a dust environment simulation device according to claim 6, wherein: the cloth-equalizing cylinder is formed by assembling a plurality of sections of cylinders, and a detection sensor and an access door are arranged on each cylinder; the window is also disposed on the barrel.
8. The horizontal wind tunnel for a dust environment simulation device according to claim 7, wherein: the gathering structure is a gathering barrel with conical change, the large end of the gathering barrel is communicated with the uniform distribution barrel, and the small end of the gathering barrel is communicated with a communicating barrel with equal diameter.
9. The horizontal wind tunnel for a dust environment simulation device according to claim 8, wherein: the axial central lines of the communication cylinder, the convergence cylinder, the mixing cylinder, the uniform distribution cylinder, the air inlet main pipe and the outer cone are arranged in a collinear way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515111.2A CN114235322A (en) | 2021-12-13 | 2021-12-13 | Horizontal wind tunnel for dust environment simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515111.2A CN114235322A (en) | 2021-12-13 | 2021-12-13 | Horizontal wind tunnel for dust environment simulation device |
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| CN114235322A true CN114235322A (en) | 2022-03-25 |
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| CN202111515111.2A Pending CN114235322A (en) | 2021-12-13 | 2021-12-13 | Horizontal wind tunnel for dust environment simulation device |
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| CN103234573A (en) * | 2013-04-22 | 2013-08-07 | 张家港朗亿机电设备有限公司 | Dust environment simulation equipment |
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| CN106370451A (en) * | 2016-11-08 | 2017-02-01 | 张家港朗亿机电设备有限公司 | Dust cutter calibration system and calibration method therefor |
| CN106404627A (en) * | 2016-11-08 | 2017-02-15 | 张家港朗亿机电设备有限公司 | Dust environment simulating device |
| CN107607447A (en) * | 2017-08-21 | 2018-01-19 | 黑龙江科技大学 | A kind of apparatus and method of accurate measurement low concentration dust concentration |
| CN211740990U (en) * | 2020-03-15 | 2020-10-23 | 张家港朗亿机电设备有限公司 | Dust simulation device of portable dust instrument calibration device |
| CN216524682U (en) * | 2021-12-13 | 2022-05-13 | 张家港朗亿机电设备有限公司 | Horizontal wind tunnel for dust environment simulation device |
-
2021
- 2021-12-13 CN CN202111515111.2A patent/CN114235322A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234573A (en) * | 2013-04-22 | 2013-08-07 | 张家港朗亿机电设备有限公司 | Dust environment simulation equipment |
| CN103604733A (en) * | 2013-12-02 | 2014-02-26 | 张家港朗亿机电设备有限公司 | Dust environment simulator and calibration method for dust concentration measuring instrument by using same |
| CN106370451A (en) * | 2016-11-08 | 2017-02-01 | 张家港朗亿机电设备有限公司 | Dust cutter calibration system and calibration method therefor |
| CN106404627A (en) * | 2016-11-08 | 2017-02-15 | 张家港朗亿机电设备有限公司 | Dust environment simulating device |
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Inventor after: Luo Weiqi Inventor after: Hou Xiaohua Inventor after: Shi Huimin Inventor after: Shi Yi Inventor after: Li Zhihao Inventor before: Shi Huimin Inventor before: Shi Yi Inventor before: Li Zhihao |