CN107014720A - A kind of online in site measurement probe of grain graininess - Google Patents
A kind of online in site measurement probe of grain graininess Download PDFInfo
- Publication number
- CN107014720A CN107014720A CN201710374612.0A CN201710374612A CN107014720A CN 107014720 A CN107014720 A CN 107014720A CN 201710374612 A CN201710374612 A CN 201710374612A CN 107014720 A CN107014720 A CN 107014720A
- Authority
- CN
- China
- Prior art keywords
- online
- measurement probe
- site measurement
- grain graininess
- lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 54
- 239000000523 sample Substances 0.000 title claims abstract description 29
- 238000010790 dilution Methods 0.000 claims abstract description 28
- 239000012895 dilution Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000010926 purge Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 15
- 239000013618 particulate matter Substances 0.000 abstract description 14
- 239000002245 particle Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 238000005070 sampling Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000011109 contamination Methods 0.000 abstract description 2
- 239000002817 coal dust Substances 0.000 description 8
- 239000013307 optical fiber Substances 0.000 description 6
- 239000008247 solid mixture Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000005465 channeling Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Classifications
-
- 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
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging
- G01N15/0211—Investigating a scatter or diffraction pattern
Abstract
The invention discloses a kind of online in site measurement probe of grain graininess, including the housing with dilution runner, porch of the dilution runner along Flow of Goods and Materials direction is provided with gas access；The wall of dilution runner two above gas access is respectively equipped with lens and camera lens, and the side of correspondence lens sets generating device of laser, and the side of correspondence camera lens sets photoelectric sensor；The air curtain device of purging lens and/or camera lens is additionally provided with dilution runner, gas access and air curtain device are connected with gas generator respectively.The online in site measurement probe of grain graininess disclosed by the invention, based on laser particle size measurement principle, it is possible to achieve the online in site measurement of the granularity data of solid particulate matter, measurement process is without sampling, and accurately and timely, energy-saving effect is protruded measurement result；The solid particulate matter on camera lens and lens can be purged using air curtain device simultaneously, camera lens and lens contamination is prevented.
Description
Technical field
The present invention relates to Dual-Phrase Distribution of Gas olid on-line measurement field, and in particular to a kind of online in site measurement of grain graininess is visited
Pin.
Background technology
Air-flow conveying be using the energy of air-flow in closed conduit along airflow direction conveying granular material, be a kind of profit
It is an important technology in industrial processes with the effective ways of air-flow conveying granular solid in the duct, extensively should
In conveying and drying process for the pellet, powder of various industrial departments.
The grain graininess measuring method that current industry spot is most widely used is sieve method, the granular that sampling is obtained
Product are placed on the standard screen of a variety of grades, are shone by mechanical oscillation and are separated different-grain diameter, then are weighed respectively, are counted each grade and are accounted for
The Mass Distribution of gross sample obtains the size distribution of particle.Sieve method measuring principle is simple, reliable results, but needs at sampling
Reason, requires high, measurement result hysteresis quality is big to sampling representativeness.
In existing online the Measurement of Grain Granularity, laser particle analyzer measurement grain graininess is fast with its measuring speed, knot
Accurately advantage is gradually received significant attention fruit, but is due to that laser particle analyzer equipment is expensive, high to environmental requirement, there is camera lens
Easily pollution and the complicated shortcoming of installation, industry spot bad adaptability causes in site measurement ability to be restricted.
CN102323193A patent prospectus discloses a kind of laser scattering method air particles distribution measurement method
And device, the device, which includes carrying, to be measured the air pump of chamber and air duct, is arranged on the measurement chamber side that air duct is exported
Laser, the Xian Guang areas for being arranged on the measurement intracavitary opposite side that air duct is exported, the measurement chamber for being arranged on air duct outlet
The photoelectric acquisition sensor of the burnt focus lens of the band of interior side, the micro computer being connected with the electric signal output of photoelectric acquisition sensor
Control device, display screen, the electric signal input of display screen are connected with the electric signal output of micro-computer controlling apparatus, and photodetection is passed
Sensor uses high sensitivity avalanche diode.But the defect of the device is that not providing device is used to protect lens, causes it
Vulnerable to pollution.
CN10544515A patent prospectus disclose it is a kind of using laser means detect solid material particle stream into
The measuring chamber divided, including it is provided with observation passage, blanking channel, laser channeling, the measuring chamber main body for receiving optical channel and setting
Watch window at observation passage two ends, it is separately positioned on the feed opening device for feed and discharging opening of blanking channel upper and lower side, is arranged on
The focusing arrangement of laser channeling outlet, the receipts light probe for being arranged on the outlet of receipts optical channel.Although the invention is in focusing lens, receipts
The material side of light microscopic head and watch window is provided with protection gas curtain, it is to avoid each eyeglass is not contaminated, still, and the device needs to use
Taken out in by the particle stream of laser detection from pulverized coal feed pipe, it is impossible to realize on-line measurement.
The content of the invention
The invention provides a kind of online in site measurement probe of grain graininess, based on laser particle size measurement principle, work is realized
Industry scene solid particulate matter granularity data online in site measurement, measurement process without sampling, measurement result accurately and timely,
Energy-saving effect is protruded.
A kind of online in site measurement probe of grain graininess, including the housing with dilution runner, described dilution runner edge
The porch of Flow of Goods and Materials is provided with gas access；The wall of dilution runner two above gas access is respectively equipped with lens and camera lens, right
Answer the side of lens that generating device of laser is set, the side of correspondence camera lens sets photoelectric sensor；It is additionally provided with and blows in dilution runner
The air curtain device of lens and/or camera lens is swept, gas access and air curtain device are connected with gas generator respectively.
Described gas generator is used for the compressed gas for providing cleaning, can not only mix, be formed with solid particulate matter
Gas-solid mixture；Lens and camera lens can also be purged, prevent lens and camera lens from polluting.
Described generating device of laser includes optical fiber head, and the spot light that optical fiber head is sent is expanded into directional light by lens.
Described photoelectric sensor is CCD or CMOS, records interference image, and interference image is transmitted to computer, warp
Computer disposal obtains the granularity data of solid particulate matter.
Solid particulate matter enters dilution runner, and the clean compressed gas that gas generator is provided sprays from gas access,
Solid particulate matter is sufficiently mixed dilution with clean compressed gas in dilution runner, is formed after gas-solid mixture, carries out optics
Measurement.
In measurement process, the spot light that optical fiber head is sent is through the beams extended by lens into directional light, and directional light runs into solid particulate matter
Obstruction occur scattering phenomenon, the size of angle of scattering is relevant with the size of solid particulate matter, and scattered light occurs dry with reference light again
Phenomenon, photosensors record interference image are related to, and interference image is transmitted to computer, is further located using computer program
Reason, you can obtain the granularity data of solid particulate matter.
Air curtain device sprays clean compressed gas, purging lens and camera lens, prevents lens and camera lens from polluting.
The gas-solid mixture outflow online in site measurement probe of grain graininess after measurement.
Preferably, described gas access is at least two, is respectively arranged at entrance of the dilution runner along Flow of Goods and Materials direction
The both sides at place.
Preferably, described gas access is provided with gas nozzle.
The direction of described gas nozzle is consistent with Flow of Goods and Materials direction.
Preferably, the porch of described dilution runner is provided with inclined side plate, and described gas access is located on side plate,
Air flow chamber is formed between side plate, dilution flow passage side wall and housing, described air curtain device is located at air flow chamber top, described air-flow
Chamber is connected with gas generator.
Preferably, described air curtain device is provided with gas nozzle.
Preferably, described gas nozzle is equipped with static eraser.
Preferably, described static eraser is ionic wind nozzle.
Described grain graininess is used in line in site measurement probe after several are connected, the online survey in situ of each grain graininess
Measure probe to work independently, do not interfere with each other, the demand of different industrial environments can be realized.
The online in site measurement probe of grain graininess of the present invention, is arranged in airflow pipeline, described solid particle
Thing is the Commercial pellet for waiting particle diameter more than micron order.
Preferably, described solid particulate matter is coal dust or clinker.
The online in site measurement probe of grain graininess of the present invention, based on laser particle size measurement principle, the solid of industry spot
After the compressed gas dilution of particulate matter, it is possible to achieve the online in site measurement of the granularity data of solid particulate matter, measurement process without
Sampling is needed, accurately and timely, energy-saving effect is protruded measurement result；Consolidating on camera lens and lens can be purged using air curtain device simultaneously
Body particulate matter, prevents camera lens and lens contamination.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the online in site measurement probe of grain graininess of the present invention.
Fig. 2 is the enlarged diagram of the porch flow direction of material of dilution runner in Fig. 1.
Fig. 3 is the structural representation that the online in site measurement probe of 3 grain graininess is used in series.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, it is necessary to, it is noted that the present embodiment
It is served only for that the present invention is further detailed, can not be interpreted as defining the scope of the present invention.
As depicted in figs. 1 and 2, the online in site measurement probe of a kind of grain graininess, including the housing with dilution runner 2,
The both sides for diluting porch of the runner 2 along Flow of Goods and Materials direction are equipped with inclined side plate 10, and gas access 3 is located at side plate 10
On, air flow chamber 11 is formed between side plate 10, the dilution side wall of runner 2 and housing, air curtain device 8 is located at the top of air flow chamber 11, air-flow
Chamber 11 is connected with gas generator.
2 liang of walls of dilution runner of the top of gas access 3 are respectively equipped with lens 5 and camera lens 7, and the side of correspondence lens 5 is set
Generating device of laser, the side of correspondence camera lens 7 sets CCD 6.
Generating device of laser includes optical fiber head 4, and the spot light that optical fiber head 4 is sent is expanded into directional light by lens 5；
CCD 6 can record interference image, and interference image is transmitted to computer, handled through computer and obtain coal dust
Granularity data.
The direction for the gas nozzle being equipped with gas access 3 and air curtain device 8 on several gas nozzles, gas access
It is consistent with Flow of Goods and Materials direction, the ionic wind nozzle for eliminating electrostatic is equipped with gas nozzle.
Gas generator provides clean compressed gas and transmitted through air flow chamber 11 to gas access 3 and air curtain device 8, not only
It can be mixed with coal dust, form gas-solid mixture, while lens 5 and camera lens 7 can also be purged, prevent that lens 5 and camera lens 7 are dirty
Dye.
Coal dust enters dilution runner 2 through diluting the entrance 1 of runner 2, and air flow chamber 11 is connected with gas generator, gas access
3 iron nozzle sprays clean compressed gas, is sufficiently mixed dilution in dilution runner 2 with coal dust, forms gas-solid mixture
Afterwards, optical measurement is carried out；The iron nozzle of air curtain device 8 sprays clean compressed gas, purging lens 5 and camera lens 7, prevents
Mirror 5 and camera lens 7 pollute.
In measurement process, the spot light that optical fiber head 4 is sent expands into directional light through lens 5, and directional light runs into the resistance of coal dust
Hinder generation scattering phenomenon, the size of angle of scattering is relevant with the size of coal dust, scattered light interferes phenomenon, CCD with reference light again
6 record interference images, and interference image is transmitted to computer, further handled using computer program, you can obtain coal dust
Granularity data.
Flow out the online in site measurement probe of grain graininess in outlet 9 of the gas-solid mixture directly from dilution runner 2 after measurement.
As shown in figure 3, the online in site measurement probe of 3 grain graininess can connect simultaneously, each grain graininess is former online
Measurement probe in position works independently, and does not interfere with each other, can realize the demand of different industrial environments.
Above-mentioned is that the present invention is elaborated in conjunction with the embodiments, but embodiments of the present invention are not by above-mentioned implementation
Example limitation, other any changes made under patent core guiding theory of the present invention, replacements, combination simplification etc. be included in
Within the protection domain of patent of the present invention.
Claims (9)
1. a kind of online in site measurement probe of grain graininess, it is characterised in that：Including the housing with dilution runner, described is dilute
Porch of the runner along Flow of Goods and Materials direction is released provided with gas access；The wall of dilution runner two above gas access is respectively equipped with
Mirror and camera lens, the side of correspondence lens set generating device of laser, and the side of correspondence camera lens sets photoelectric sensor；Dilute runner
The air curtain device of purging lens and/or camera lens is inside additionally provided with, gas access and air curtain device are connected with gas generator respectively.
2. the online in site measurement probe of grain graininess according to claim 1, it is characterised in that：Described gas access is
At least two, is respectively arranged at the both sides of porch of the dilution runner along Flow of Goods and Materials direction.
3. the online in site measurement probe of grain graininess according to claim 1, it is characterised in that：Described gas access is set
There is gas nozzle.
4. the online in site measurement probe of grain graininess according to claim 3, it is characterised in that：Described gas nozzle
Direction is consistent with Flow of Goods and Materials direction.
5. the online in site measurement probe of grain graininess according to claim 1, it is characterised in that：Described dilution runner
Porch is provided with inclined side plate, and described gas access is formed on side plate between side plate, dilution flow passage side wall and housing
Air flow chamber, described air curtain device is located at air flow chamber top, and described air flow chamber is connected with gas generator.
6. the online in site measurement probe of grain graininess according to claim 1, it is characterised in that：Described air curtain device is set
There is gas nozzle.
7. the online in site measurement probe of grain graininess according to claim 3 or 6, it is characterised in that：Described gas spray
Mouth is equipped with static eraser.
8. the online in site measurement probe of grain graininess according to claim 7, it is characterised in that：Described static elimination dress
It is set to ionic wind nozzle.
9. the online in site measurement probe of grain graininess according to claim 1, it is characterised in that：Described grain graininess exists
Used after several series connection of line in site measurement probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710374612.0A CN107014720A (en) | 2017-05-24 | 2017-05-24 | A kind of online in site measurement probe of grain graininess |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710374612.0A CN107014720A (en) | 2017-05-24 | 2017-05-24 | A kind of online in site measurement probe of grain graininess |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107014720A true CN107014720A (en) | 2017-08-04 |
Family
ID=59450766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710374612.0A Pending CN107014720A (en) | 2017-05-24 | 2017-05-24 | A kind of online in site measurement probe of grain graininess |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107014720A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307677A (en) * | 2019-11-22 | 2020-06-19 | 北京雪迪龙科技股份有限公司 | Laser front scattering particulate matter monitoring device |
| CN112649332A (en) * | 2020-12-30 | 2021-04-13 | 东北电力大学 | Power plant coal particle size distribution online detection device and method |
| CN115791547A (en) * | 2023-02-09 | 2023-03-14 | 合肥金星智控科技股份有限公司 | Powder material particle size online monitoring system and method |
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