CN105510111A - High-flow wind tunnel particulate matter filtering detection system - Google Patents
High-flow wind tunnel particulate matter filtering detection system Download PDFInfo
- Publication number
- CN105510111A CN105510111A CN201610015581.5A CN201610015581A CN105510111A CN 105510111 A CN105510111 A CN 105510111A CN 201610015581 A CN201610015581 A CN 201610015581A CN 105510111 A CN105510111 A CN 105510111A
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- China
- Prior art keywords
- air channel
- dust
- transmitter
- particle filter
- examination 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
-
- 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
Abstract
The invention relates to the technical field of dust sampling, in particular to a high-flow wind tunnel particulate matter filtering detection system. The detection system comprises an air channel and a dust ejector. The section of the air channel is round. The dust ejector is in a circular ring shape. The dust ejector is arranged in the air channel, and the dust ejector and the air channel are distributed concentrically. A dust inlet is formed in the dust ejector. A plurality of dust outlets are formed in the dust ejector in the extending direction of the dust ejector. The outlet direction of the dust outlets is consistent with the wind direction of the air channel. According to the high-flow wind tunnel particulate matter filtering detection system, no natural space dead angle exists in the round air channel. The dust outlets are adopted in the dust ejector in the circular ring shape eject particulate matter samples at the same time, the particulate matter samples can be mixed uniformly in the air channel of a wind tunnel, deviation among sample analysis results obtained by different sampling points in the air channel is small, and accuracy of data analysis of scientific research results is ensured.
Description
Technical field
The present invention relates to dust sampling detection technique field, especially relate to a kind of large discharge wind-tunnel particle Filter Examination system.
Background technology
At present, the duct cross-section of wind-tunnel of the prior art is square more, aerosol sample enters in wind-tunnel air channel from an import, due to aerosol sample, to enter air channel uneven, add square air channel and there is place dead angle, thus cause aerosol sample mixed uniformly weak effect in air channel, affect sample analysis result.
Summary of the invention
The object of the present invention is to provide a kind of large discharge wind-tunnel particle Filter Examination system, cannot mixed uniformly technical matters to solve the aerosol sample existed in prior art.
Large discharge wind-tunnel particle Filter Examination system provided by the invention, comprises air channel and dust transmitter; The cross section in air channel is circular, and dust transmitter is annular, and dust transmitter is arranged in air channel, and is that concentric circles distributes with air channel; Dust transmitter is provided with dust inlet; On dust transmitter, along dust transmitter extend direction, be provided with multiple dust outlet, and the Way out of multiple dust outlet and the wind direction in air channel consistent.
Further, the sectional area of multiple dust outlet, by close dust inlet to the direction away from dust inlet, increases gradually.
Further, the diameter of dust transmitter is 1/2 of air channel diameter.
Further, air channel comprises the first air channel, the second air channel and the 3rd air channel, and sample region; First air channel, the second air channel are communicated with successively with the 3rd air channel; First air channel is air intake away from the one end in the second air channel, and the 3rd air channel is sample region away from the one end in the second air channel; Sample region is for gathering the mixed dust aerosol sample in air channel; First air channel, by the direction in air intake to the second air channel, in gradually-reducing shape.
Further, the second air channel, by the direction in the first air channel to the 3rd air channel, in gradually-reducing shape.
Further, the maximum gauge in the second air channel is less than the maximum gauge in the first air channel.
Further, sample region is cylindric; 3rd air channel, by the direction in air channel, sample region to the second, in gradually-reducing shape.
Large discharge wind-tunnel particle Filter Examination system provided by the invention, circular air channel does not have place dead angle, and the dust transmitter of annular adopts multiple dust outlet to launch aerosol sample simultaneously, therefore aerosol sample can Homogeneous phase mixing in wind-tunnel air channel, the sample analysis result error that different sampling spot in air channel is obtained is little, guarantees the accuracy that scientific research result data is analyzed.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the large discharge wind-tunnel particle Filter Examination system that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the dust transmitter of the large discharge wind-tunnel particle Filter Examination system that Fig. 2 provides for the embodiment of the present invention.
Reference numeral:
1-air channel; 11-air intake; 12-first air channel;
13-second air channel; 14-the 3rd air channel; 15-sample region;
2-dust transmitter; 21-dust inlet; 22-dust outlet.
Embodiment
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
The structural representation of the large discharge wind-tunnel particle Filter Examination system that Fig. 1 provides for the embodiment of the present invention; The structural representation of the dust transmitter of the large discharge wind-tunnel particle Filter Examination system that Fig. 2 provides for the embodiment of the present invention.As depicted in figs. 1 and 2, the large discharge wind-tunnel particle Filter Examination system that the present embodiment provides, comprises air channel 1 and dust transmitter 2; The cross section in air channel 1 is circular, and dust transmitter 2 is annular, and dust transmitter 2 is arranged in air channel 1, and distributes in concentric circles with air channel 1; Dust transmitter 2 is provided with dust inlet 21; On dust transmitter 2, along the direction that dust transmitter 2 extends, be provided with multiple dust outlet 22, and the Way out of multiple dust outlet 22 is consistent with the wind direction in air channel 1.
See Fig. 2, the dust transmitter 2 of annular is provided with a dust inlet 21, dust inlet 21, is communicated with external dust generator through air channel 1 tube wall, to provide dust granules thing in dust transmitter 2 by a pipeline;
The dust transmitter 2 of annular distributes in concentric circles with circular air channel 1, the dust transmitter 2 of annular is also provided with multiple dust outlet 22, the also circular distribution of multiple dust outlet 22, the Way out of dust outlet 22 is consistent with the wind direction in air channel 1, dust granules matter sample in air channel 1 by air push, diffusion is come, and is uniformly distributed.
On the basis of above-described embodiment, further, the sectional area of multiple dust outlet 22, by close dust inlet 21 to the direction away from dust inlet 21, increases gradually.
As shown in Figure 2, by dust inlet 21 side to the offside of dust inlet 21, atmospheric pressure diminishes gradually, for ensureing that annular dust transmitter 2 dust is launched evenly, make the hair powder amount of each dust outlet 22 the same, the therefore sectional area of dust outlet 22, become large from top to bottom gradually.
On the basis of above-described embodiment, further, the diameter of dust transmitter 2 is 1/2 of air channel 1 diameter.
Whole annular dust transmitter 2 diameter is the half of air channel 1 diameter, and dust transmitter 2 distributes in concentric circles with air channel 1, the central shaft of dust transmitter 2 is also just in time the central shaft in air channel 1, and this is deeper ensure that dust being uniformly distributed in air channel 1.
On the basis of above-described embodiment, further, air channel 1 comprises the first air channel 13, air channel 12, second and the 3rd air channel 14, and sample region 15; First air channel 13, air channel 12, second is communicated with successively with the 3rd air channel 14; First air channel 12 is air intake 11 away from the one end in the second air channel 13, and the 3rd air channel 14 is sample region 15 away from the one end in the second air channel 13; Sample region 15 is for gathering the mixed dust aerosol sample in air channel 1; First air channel 12, by the direction in air intake 11 to the second air channel 13, in gradually-reducing shape.
The flow direction of gas in air channel is represented see arrow in Fig. 1, figure.
As shown in Figure 1, air enters the first air channel 12 uniformly by air intake 11, air is by after dust transmitter 2, the powder sample that dust transmitter 2 sends and air channel wind direction keep in the same way, dust granules matter sample in air channel by the continuous driven forward of air, successively by the second air channel 13, the 3rd air channel 14, finally enter sample region 15 and be sampled.
In the first air channel 12, in the mixed process of air and dust, the dust in air aerosol sample of air channel near-wall is relatively sparse, therefore, first air channel 12, by the direction in air intake 11 to the second air channel 13, in gradually-reducing shape, refract to centre position the air of air channel near-wall and dust granules to be shunk, air dust granules matter sample in air channel is mixed.
On the basis of above-described embodiment, further, the second air channel 13, by the direction in the first air channel 12 to the 3rd air channel 14, in gradually-reducing shape.
Air-borne dust aerosol sample through the first mixing in the first air channel 12 of gradually-reducing shape, keep one section at the uniform velocity flowing after, carry out through the second air channel 13 of gradually-reducing shape secondary shrink refraction mixing.
On the basis of above-described embodiment, further, the maximum gauge in the second air channel 13 is less than the maximum gauge in the first air channel 12.
See Fig. 1, the maximum gauge in the second air channel 13 is less than the maximum gauge in the first air channel 12, and powder sample fully mixes in less space.
On the basis of above-described embodiment, further, sample region 15 is in cylindric; 3rd air channel 14, by the direction in air channel, sample region 15 to the second 13, in gradually-reducing shape.
See Fig. 1, the 3rd air channel 14 right-hand member is sample region 15, and left end is communicated with the second air channel 13, the 3rd air channel 14, and right-to-left, in gradually-reducing shape;
The secondary mixing of air-borne dust aerosol sample through the second air channel 13 of gradually-reducing shape enters the 3rd air channel 14, keep one section at the uniform velocity flowing after, slowly reflect diffusion to come, enter into sample region 15, dust granules matter sample now is uniformly mixed in air channel, and Uniform gas flow velocity is stablized in air channel, the ambient concentration of sample region 15 can provide reliable sample for experiment sampling completely.
By above embodiment, the large discharge wind-tunnel particle Filter Examination system that the embodiment of the present invention provides, the problem of particle incomplete mixing in wind-tunnel air channel can be solved by stage construction, aerosol sample is made to obtain full and uniform mixing in wind-tunnel air channel, avoid the difference of sampling spot in wind-tunnel air channel to cause experimental result deviation comparatively large, affect experimental result data analysis.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a large discharge wind-tunnel particle Filter Examination system, is characterized in that, comprises air channel and dust transmitter; The cross section in described air channel is circular, and described dust transmitter is annular, and described dust transmitter is arranged in described air channel, and is that concentric circles distributes with described air channel;
Described dust transmitter is provided with dust inlet; On described dust transmitter, along the direction that described dust transmitter extends, be provided with multiple dust outlet, and the Way out of multiple described dust outlet is consistent with the wind direction in described air channel.
2. large discharge wind-tunnel particle Filter Examination system according to claim 1, is characterized in that, the sectional area of multiple described dust outlet, by close described dust inlet to the direction away from described dust inlet, increases gradually.
3. large discharge wind-tunnel particle Filter Examination system according to claim 1, it is characterized in that, the diameter of described dust transmitter is 1/2 of described air channel diameter.
4. large discharge wind-tunnel particle Filter Examination system according to claim 1, it is characterized in that, described air channel comprises the first air channel, the second air channel and the 3rd air channel, and sample region;
Described first air channel, described second air channel are communicated with successively with described 3rd air channel; Described first air channel is air intake away from the one end in described second air channel, and described 3rd air channel is described sample region away from the one end in described second air channel; Described sample region is for gathering the mixed dust aerosol sample in air channel; Described first air channel, by described air intake to the direction in described second air channel, in gradually-reducing shape.
5. large discharge wind-tunnel particle Filter Examination system according to claim 4, is characterized in that, described second air channel, by the direction in described first air channel to described 3rd air channel, in gradually-reducing shape.
6. large discharge wind-tunnel particle Filter Examination system according to claim 5, it is characterized in that, the maximum gauge in described second air channel is less than the maximum gauge in described first air channel.
7. large discharge wind-tunnel particle Filter Examination system according to claim 4, it is characterized in that, described sample region is cylindric; Described 3rd air channel, by the direction in described sample region to described second air channel, in gradually-reducing shape.
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 |
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| Publication Number | Publication Date |
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| CN105510111A true CN105510111A (en) | 2016-04-20 |
| CN105510111B CN105510111B (en) | 2018-07-27 |
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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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387385A (en) * | 2017-12-26 | 2018-08-10 | 中国矿业大学 | A kind of dry filter performance of precipitator parameter high precision measuring device and measurement method |
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| 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 |
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2016
- 2016-01-11 CN CN201610015581.5A patent/CN105510111B/en active Active
Patent Citations (6)
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| 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 |
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| CN108387385A (en) * | 2017-12-26 | 2018-08-10 | 中国矿业大学 | A kind of dry filter performance of precipitator parameter high precision measuring device and measurement method |
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| CN105510111B (en) | 2018-07-27 |
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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. |
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