CN105510111B - Big flow wind-tunnel particulate matter filters detecting system - Google Patents
Big flow wind-tunnel particulate matter filters detecting system Download PDFInfo
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- CN105510111B CN105510111B CN201610015581.5A CN201610015581A CN105510111B CN 105510111 B CN105510111 B CN 105510111B CN 201610015581 A CN201610015581 A CN 201610015581A CN 105510111 B CN105510111 B CN 105510111B
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- air duct
- dust
- transmitter
- particulate matter
- detecting system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
- G01N2001/386—Other diluting or mixing processes
- G01N2001/387—Other diluting or mixing processes mixing by blowing a gas, bubbling
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to dust sampling technical fields, filter detecting system more particularly, to a kind of big flow wind-tunnel particulate matter, which includes air duct and dust transmitter；The section in air duct is circle, and dust transmitter is circular ring shape, and dust transmitter is arranged in air duct, and is distributed in concentric circles with air duct；It is provided with dust inlet on dust transmitter；On dust transmitter, along the direction that dust transmitter extends, multiple dust outlets are provided with, and the export direction of multiple dust outlets is consistent with the wind direction in air duct.Big flow wind-tunnel particulate matter provided by the invention filters detecting system, circular air duct does not have place dead angle, and the dust transmitter of circular ring shape emits aerosol sample simultaneously using multiple dust outlets, therefore aerosol sample can be mixed uniformly in wind-tunnel air duct, so that the sample analysis result error that different sample points obtain in air duct is small, it is ensured that the accuracy of scientific research result data analysis.
Description
Technical field
The present invention relates to dust sampling detection technique fields, filter and detect more particularly, to a kind of big flow wind-tunnel particulate matter
System.
Background technology
Currently, the duct cross-section of wind-tunnel in the prior art is square more, aerosol sample enters wind-tunnel from an import
In air duct, since to enter air duct uneven for aerosol sample, along with square air channel is there are place dead angle, so as to cause
Grain object sample mixed uniformly effect in air duct is poor, influences sample analysis result.
Invention content
The purpose of the present invention is to provide a kind of big flow wind-tunnel particulate matters to filter detecting system, to solve in the prior art
Existing aerosol sample can not mixed uniformly technical problem.
Big flow wind-tunnel particulate matter provided by the invention filters detecting system, including air duct and dust transmitter；Air duct
Section is circle, and dust transmitter is circular ring shape, and dust transmitter is arranged in air duct, and is distributed in concentric circles with air duct；Powder
It is provided with dust inlet on dirt transmitter；On dust transmitter, along the direction that dust transmitter extends, it is provided with multiple dust
Outlet, and the export direction of multiple dust outlets is consistent with the wind direction in air duct.
Further, the sectional area of multiple dust outlets, by close dust inlet to the direction far from dust inlet, gradually
Increase.
Further, the 1/2 of a diameter of air duct diameter of dust transmitter.
Further, air duct includes the first air duct, the second air duct and third air duct and sample region；First air duct, second
Air duct and third air duct are sequentially communicated；The one end of first air duct far from the second air duct is air intake, and third air duct is far from second
The one end in air duct is sample region；Sample region is used to acquire the mixed dust aerosol sample in air duct；First air duct, is entered by air
Mouth is in gradually-reducing shape to the direction in the second air duct.
Further, the second air duct is in gradually-reducing shape by the first air duct to the direction in third air duct.
Further, the maximum gauge in the second air duct is less than the maximum gauge in the first air duct.
Further, sample region is cylindrical；Third air duct is in gradually-reducing shape by sample region to the direction in the second air duct.
Big flow wind-tunnel particulate matter provided by the invention filters detecting system, and circular air duct does not have place dead angle,
And the dust transmitter of circular ring shape emits aerosol sample simultaneously using multiple dust outlets, therefore aerosol sample is in wind-tunnel
It can uniformly be mixed in air duct so that the sample analysis result error that different sample points obtain in air duct is small, it is ensured that scientific research knot
The accuracy of fruit data analysis.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram that big flow wind-tunnel particulate matter provided in an embodiment of the present invention filters detecting system；
Fig. 2 is the structure for the dust transmitter that big flow wind-tunnel particulate matter provided in an embodiment of the present invention filters detecting system
Schematic diagram.
Reference numeral：
The air ducts 1-；11- air intakes；The first air ducts 12-；
The second air ducts 13-；14- thirds air duct；The sample regions 15-；
2- dust transmitters；21- dust inlets；22- dust outlets.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Fig. 1 is the structural schematic diagram that big flow wind-tunnel particulate matter provided in an embodiment of the present invention filters detecting system；Fig. 2 is
The structural schematic diagram of the dust transmitter of big flow wind-tunnel particulate matter filtering detecting system provided in an embodiment of the present invention.Such as Fig. 1
Shown in Fig. 2, big flow wind-tunnel particulate matter provided in this embodiment filters detecting system, including air duct 1 and dust transmitter 2；
The section in air duct 1 is circle, and dust transmitter 2 is circular ring shape, and dust transmitter 2 is arranged in air duct 1, and with air duct 1 in same
Heart circle distribution；Dust inlet 21 is provided on dust transmitter 2；On dust transmitter 2, along the side of the extension of dust transmitter 2
To being provided with multiple dust outlets 22, and the export direction of multiple dust outlets 22 is consistent with the wind direction in air duct 1.
Referring to Fig. 2, it is arranged on the dust transmitter 2 of circular ring shape there are one dust inlet 21, dust inlet 21 passes through one
Pipeline passes through 1 tube wall of air duct, is connected to external dust generator, to provide dust particle into dust transmitter 2；
The dust transmitter 2 of circular ring shape is distributed with circular air channel 1 in concentric circles, is also set on the dust transmitter 2 of circular ring shape
Multiple dust outlets 22 are equipped with, multiple dust outlets 22 are also at circular distribution, the wind of the export direction and air duct 1 of dust outlet 22
To consistent, dust particle sample, by air push, spreads apart and, be uniformly distributed in air duct 1.
On the basis of the above embodiments, further, the sectional area of multiple dust outlets 22, by close to dust inlet 21
To the direction far from dust inlet 21, gradually increase.
As shown in Fig. 2, by the offside of 21 side of dust inlet to dust inlet 21, atmospheric pressure tapers into, to ensure
The transmitting of 2 dust of circular ring shape dust transmitter is uniform, keeps the hair powder amount of each dust outlet 22 the same, therefore the section of dust outlet 22
Product, becomes larger from top to bottom.
On the basis of the above embodiments, further, the 1/2 of 1 diameter of a diameter of air duct of dust transmitter 2.
The half of 1 diameter of entire 2 a diameter of air duct of circular ring shape dust transmitter, and dust transmitter 2 is in concentric with air duct 1
Circle distribution, the central shaft of dust transmitter 2 is also just the central shaft in air duct 1, this is deeper to ensure that dust in air duct 1
In be uniformly distributed.
On the basis of the above embodiments, further, air duct 1 includes the first air duct 12, the second air duct 13 and third wind
Road 14 and sample region 15；First air duct 12, the second air duct 13 and third air duct 14 are sequentially communicated；First air duct 12 is far from
The one end in two air ducts 13 is air intake 11, and the one end of third air duct 14 far from the second air duct 13 is sample region 15；Sample region 15
For acquiring the mixed dust aerosol sample in air duct 1；First air duct 12, by the side in 11 to the second air duct 13 of air intake
To being in gradually-reducing shape.
Referring to Fig. 1, arrow represents the flow direction of gas in air duct in figure.
As shown in Figure 1, air uniformly enters the first air duct 12 by air intake 11, air by dust transmitter 2 it
Afterwards, dust transmitter 2 is sent out powder sample keeps in the same direction with air duct wind direction, dust particle sample in air duct by air not
It is disconnected to push forward, the second air duct 13, third air duct 14 are passed sequentially through, sample region 15 is eventually entered into and is sampled.
In the first air duct 12, in the mixed process of air and dust, the dust in air particulate matter of air duct near-wall
Sample is relatively sparse, and therefore, the first air duct 12 is in gradually-reducing shape by the direction in 11 to the second air duct 13 of air intake, will
Air and the dust particles contraction of air duct near-wall refract to centre position, and air dust particle sample in air duct is made to mix
Uniformly.
On the basis of the above embodiments, further, the second air duct 13, by the side in the first air duct 12 to third air duct 14
To being in gradually-reducing shape.
Air-borne dust aerosol sample is kept for one section and at the uniform velocity flows it by the first mixing in the first air duct 12 of gradually-reducing shape
Afterwards, it carries out secondary contraction by the second air duct 13 of gradually-reducing shape and reflects mixing.
On the basis of the above embodiments, further, the maximum gauge in the second air duct 13 is less than the first air duct 12 most
Major diameter.
Referring to Fig. 1, the maximum gauge in the second air duct 13 is less than the maximum gauge in the first air duct 12, and powder sample is in smaller sky
It is interior to be sufficiently mixed uniformly.
On the basis of the above embodiments, further, sample region 15 is cylindrical；Third air duct 14, by sample region 15
To the direction in the second air duct 13, it is in gradually-reducing shape.
Referring to Fig. 1,14 right end of third air duct is sample region 15, and left end is connected to the second air duct 13, third air duct 14, from the right side
To the left, it is in gradually-reducing shape；
Air-borne dust aerosol sample enters third air duct 14 by the secondary mixing in the second air duct 13 of gradually-reducing shape, keeps
After one section at the uniform velocity flows, slowly refraction, which is spread apart, comes, and enters sample region 15, dust particle sample at this time is in air duct
It has been be uniformly mixed that, and Uniform gas flow velocity is stablized in air duct, the ambient concentration of sample region 15 can be that experiment takes completely
Sample provides reliable sample.
By embodiment of above, big flow wind-tunnel particulate matter provided in an embodiment of the present invention filters detecting system, can
Stage construction solves the problems, such as particulate matter incomplete mixing in wind-tunnel air duct, so that aerosol sample is obtained in wind-tunnel air duct full and uniform
Mixing, avoids the difference of sample point in wind-tunnel air duct from causing experimental result deviation larger, influences experimental result data analysis.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of big flow wind-tunnel particulate matter filters detecting system, which is characterized in that including air duct and dust transmitter；The wind
The section in road is circle, and the dust transmitter is circular ring shape, and the dust transmitter is arranged in the air duct, and with it is described
Air duct is distributed in concentric circles；
It is provided with dust inlet on the dust transmitter；On the dust transmitter, extend along the dust transmitter
Direction is provided with multiple dust outlets, and the export direction of multiple dust outlets is consistent with the wind direction in the air duct.
2. big flow wind-tunnel particulate matter according to claim 1 filters detecting system, which is characterized in that multiple dust
The sectional area of outlet, by, to the direction far from the dust inlet, gradually increasing close to the dust inlet.
3. big flow wind-tunnel particulate matter according to claim 1 filters detecting system, which is characterized in that the dust transmitting
The 1/2 of a diameter of air duct diameter of device.
4. big flow wind-tunnel particulate matter according to claim 1 filters detecting system, which is characterized in that the air duct includes
First air duct, the second air duct and third air duct and sample region；
First air duct, second air duct and the third air duct are sequentially communicated；First air duct is far from described second
The one end in air duct is air intake, and the one end of the third air duct far from second air duct connects the sample region；It is described to adopt
Sample area is used to acquire the mixed dust aerosol sample in air duct；First air duct, by the air intake to described second
The direction in air duct, is in gradually-reducing shape.
5. big flow wind-tunnel particulate matter according to claim 4 filters detecting system, which is characterized in that second wind
Road is in gradually-reducing shape by first air duct to the direction in the third air duct.
6. big flow wind-tunnel particulate matter according to claim 5 filters detecting system, which is characterized in that second air duct
Maximum gauge be less than first air duct maximum gauge.
7. big flow wind-tunnel particulate matter according to claim 4 filters detecting system, which is characterized in that the sample region is in
It is cylindric；The third air duct is in gradually-reducing shape by the sample region to the direction in second air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610015581.5A CN105510111B (en) | 2016-01-11 | 2016-01-11 | Big flow wind-tunnel particulate matter filters detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610015581.5A CN105510111B (en) | 2016-01-11 | 2016-01-11 | Big flow wind-tunnel particulate matter filters detecting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105510111A CN105510111A (en) | 2016-04-20 |
| CN105510111B true CN105510111B (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610015581.5A Active CN105510111B (en) | 2016-01-11 | 2016-01-11 | Big flow wind-tunnel particulate matter filters detecting system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108387385B (en) * | 2017-12-26 | 2020-07-17 | 中国矿业大学 | High-precision measurement device and measurement method for performance parameters of dry filter dust collector |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3901798A (en) * | 1973-11-21 | 1975-08-26 | Environmental Research Corp | Aerosol concentrator and classifier |
| US4461183A (en) * | 1982-03-05 | 1984-07-24 | Wedding James B | Ambient aerosol sampler inlet |
| CN101520365A (en) * | 2009-03-06 | 2009-09-02 | 山东科技大学 | Simulation experimental system for controlling mine tunnel dust environment |
| US7690276B1 (en) * | 2007-11-28 | 2010-04-06 | The United States Of America As Represented By The Secretary Of The Army | High-efficiency air intake for aerosol air samplers |
| CN202880462U (en) * | 2012-10-25 | 2013-04-17 | 兰州大学 | Wind tunnel dust supply device |
| 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 |
-
2016
- 2016-01-11 CN CN201610015581.5A patent/CN105510111B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3901798A (en) * | 1973-11-21 | 1975-08-26 | Environmental Research Corp | Aerosol concentrator and classifier |
| US4461183A (en) * | 1982-03-05 | 1984-07-24 | Wedding James B | Ambient aerosol sampler inlet |
| US7690276B1 (en) * | 2007-11-28 | 2010-04-06 | The United States Of America As Represented By The Secretary Of The Army | High-efficiency air intake for aerosol air samplers |
| CN101520365A (en) * | 2009-03-06 | 2009-09-02 | 山东科技大学 | Simulation experimental system for controlling mine tunnel dust environment |
| CN202880462U (en) * | 2012-10-25 | 2013-04-17 | 兰州大学 | Wind tunnel dust supply device |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 长沙1号线风道送风均匀性研究;肖峰敏 等;《技术与市场》;20150831;第22卷(第8期);第30-31、35页 * |
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| CN105510111A (en) | 2016-04-20 |
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Effective date of registration: 20181225 Address after: 233000 Intersection of No. 4-7 Road in Wuhe County Chengnan Economic Development Zone, Bengbu City, Anhui Province Patentee after: BENGBU KUNPENG FOOD & BEVERAGE CO., LTD. Address before: Room A35, 1st floor, Building 1, 12 Shangdi Information Road, Haidian District, Beijing 100085 Patentee before: BEIJING LINGKESHENGSHI ENVIRONMENT PROTECTION TECHNOLOGY CO., LTD. |