CN108007835A - A kind of grain graininess and concentration measuring method and its device - Google Patents
A kind of grain graininess and concentration measuring method and its device Download PDFInfo
- Publication number
- CN108007835A CN108007835A CN201711402201.4A CN201711402201A CN108007835A CN 108007835 A CN108007835 A CN 108007835A CN 201711402201 A CN201711402201 A CN 201711402201A CN 108007835 A CN108007835 A CN 108007835A
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- Prior art keywords
- particle
- guide duct
- air
- charge
- charge detector
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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
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
-
- 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
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- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of grain graininess and concentration measuring method and its device, due to solid particle and the raw friction of the gentle miscarriage of tube wall when being flowed using air-flow in guide duct, so that solid particle carries a certain amount of electrostatic charge, then the electric charge in air-flow is measured using charge measurement instrument, so as to obtain total charge dosage, then the solid particle being mingled with air-flow is learnt, it is being multiplied to obtain air-flow total amount with the time by air flow rate, so as to draw granule density, a part of particle is removed using particle dust arrester to be then sent in liquid, observe the height change of liquid levels, so as to draw the cumulative volume of particle, the sum for removing a part of particle can be drawn using two charge measurement instrument differences, then the cumulative volume divided by the sum of particle for drawing particle are utilized, so as to draw grain graininess.The configuration of the present invention is simple, measuring method is easy to operation, and measurement result is accurate, and practicality is stronger.
Description
Technical field
The present invention relates to a kind of military particle sizing technology, is specifically a kind of grain graininess and concentration measuring method and its dress
Put.
Background technology
Measured for dispersed grain graininess and concentration in two phase flow, be related to the energy, chemical industry, doctor of two-phase flow
Extensively using background in the fields such as medicine, environment, water conservancy and material.But also there is more application in military industry field, for many
In the environment in unknown region, military project is also required to carry out grain graininess to it and concentration measures, to ensure to enter the environment
In soldier health.Existing particle sizing method has screening method, microscopic method, light scattering method etc., these modes are generally difficult to
Realize quick measurement and it is difficult to ensure that the accuracy of measurement under High Concentration Situation.
The content of the invention
It is an object of the invention to provide a kind of grain graininess and concentration measuring method and its device, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, a kind of grain graininess and concentration measuring method of the invention, comprise the following steps：
（1）Open timer and start timing, and set timing alarm in 1 minute.
（2）The air-flow with particle is blown into guide duct with air blower, and passes through throttle valve control guide duct interior air-flow
Flow velocity.
（3）When hearing alarm, observation is changed by the charge reaction of the first charge detector and the second charge detector
Amount, and record.
（4）The numerical value change amount on liquid level change and the weigher in water tank is observed, and is got off by calibration record.
（5）Air output can be calculated using the area of section in the flow velocity and guide duct of guide duct interior air-flow.
（6）The charge reaction variable quantity detected using the first charge detector can draw one end time endoparticle quantity.
（7）The amounts of particles that the air current flow and step 6 drawn using step 5 is drawn can draw granule density.
（8）It can be drawn using the numerical difference of the first charge detector and the charge reaction variable quantity of the second charge detector
Fall into the amounts of particles in water tank.
（9）The difference in volume of water tank level can be calculated using the liquid level difference of water tank, goes out to fall into water tank endoparticle to obtain the final product
Cumulative volume.
（10）The amounts of particles that the cumulative volume divided by step 8 of the particle drawn using step 9 are drawn, and draw particle
Degree.
Further, the step 2 can change different air-flow velocities and be operated.
Further, the step 4 can repeatedly be measured and is averaged.
A kind of grain graininess and apparatus for measuring concentration provided by the present invention, including cut including guide duct, the guide duct
Face constant area, one end of guide duct are provided with air blower, and the other end of guide duct is additionally provided with timer, on the guide duct
The first charge detector and the second charge detector are additionally provided with, between first charge detector and the second charge detector
Particle dust arrester is provided with, the lower end of the particle dust arrester is connected by conduit with water tank with a scale, the water tank with a scale
It is placed on weigher, the left end of the guide duct is additionally provided with throttle valve.
As the further scheme of the present invention：The air blower is electronic control type air blower.
As further scheme of the invention：Second charge detector is located on the right side of the first charge detector.
Compared with prior art, the beneficial effects of the invention are as follows：Due to solid when being flowed using air-flow in guide duct
Grain and the raw friction of the gentle miscarriage of tube wall, so that solid particle carries a certain amount of electrostatic charge, then utilize charge measurement instrument
Electric charge in air-flow is measured, so as to obtain total charge dosage, the solid particle being mingled with air-flow is then learnt, is passing through gas
Stream flow is multiplied to obtain air-flow total amount with the time, so as to draw granule density, it is right to remove a part of particle using particle dust arrester
After send to liquid, observe the height change of liquid levels, it is poor using two charge measurement instrument so as to draw the cumulative volume of particle
Value can draw the sum for removing a part of particle, then using the cumulative volume divided by the sum of particle for drawing particle, so that
Go out grain graininess.The configuration of the present invention is simple, measuring method is easy to operation, and measurement result is accurate, and practicality is stronger.
Brief description of the drawings
Fig. 1 is grain graininess and the structure diagram of concentration measuring method and its device.
Wherein：Guide duct 1, air blower 2, the first charge detector 3, the second charge detector 4, timer 5, particle dust
Device 6, throttle valve 7, water tank with a scale 8, conduit 9, weigher 10.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
A kind of grain graininess and concentration measuring method operation principle of the embodiment of the present invention is as follows：
（1）Open timer and start timing, and set timing alarm in 1 minute.
（2）The air-flow with particle is blown into guide duct using air blower, and passes through gas in throttle valve control guide duct
The flow velocity of stream.
（3）When hearing alarm, observation is changed by the charge reaction of the first charge detector and the second charge detector
Amount, and record.
（4）The numerical value change amount on liquid level change and the weigher in water tank is observed, and is got off by calibration record.
（5）Air output can be calculated using the area of section in the flow velocity and guide duct of guide duct interior air-flow.
（6）The charge reaction variable quantity detected using the first charge detector can draw one end time endoparticle quantity.
（7）The amounts of particles that the air current flow and step 6 drawn using step 5 is drawn can draw granule density.
（8）It can be drawn using the numerical difference of the first charge detector and the charge reaction variable quantity of the second charge detector
Fall into the amounts of particles in water tank.
（9）The difference in volume of water tank level can be calculated using the liquid level difference of water tank, goes out to fall into water tank endoparticle to obtain the final product
Cumulative volume.
（10）The amounts of particles that the cumulative volume divided by step 8 of the particle drawn using step 9 are drawn, and draw particle
Degree.
Further, the step 2 can change different air-flow velocities and be operated.
Further, the step 4 can repeatedly be measured and is averaged.
Referring to Fig. 1, in the embodiment of the present invention, a kind of its device of grain graininess and measurement of concetration, including guide duct 1, institute
State that 1 area of section of guide duct is constant, one end of guide duct 1 is provided with air blower 2, and the air blower 2 is electronic control type air blower, is led
The other end of air hose 1 is additionally provided with timer 5, and the first charge detector 3 and the inspection of the second electric charge are additionally provided with the guide duct 1
Instrument 4 is surveyed, particle dust arrester 6, the particle dust are provided between 3 and second charge detector 4 of the first charge detector
The lower end of device 6 is connected by conduit 9 with water tank 8 with a scale, and the water tank 8 with a scale is placed on weigher 10, the guide duct 1
Left end be additionally provided with throttle valve 7, second charge detector 4 is located at the right side of the first charge detector 3.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. a kind of grain graininess and concentration measuring method, it is characterised in that comprise the following steps：
Open timer and start timing, and set timing alarm in 1 minute；
The air-flow with particle is blown into guide duct using air blower, and passes through the stream of throttle valve control guide duct interior air-flow
Speed；
When hearing alarm, observation is remembered by the first charge detector and the charge reaction variable quantity of the second charge detector
Record；
The numerical value change amount on liquid level change and the weigher in water tank is observed, and is got off by calibration record；
Air output can be calculated using the area of section in the flow velocity and guide duct of guide duct interior air-flow；
The charge reaction variable quantity detected using the first charge detector can draw one end time endoparticle quantity；
The amounts of particles that the air current flow and step 6 drawn using step 5 is drawn can draw granule density；
It can be drawn using the numerical difference of the first charge detector and the charge reaction variable quantity of the second charge detector and fall into water
Amounts of particles in case；
The difference in volume of water tank level can be calculated using the liquid level difference of water tank, goes out to fall into the totality of water tank endoparticle to obtain the final product
Product；
The amounts of particles that the cumulative volume divided by step 8 of the particle drawn using step 9 are drawn, and draw grain graininess.
2. grain graininess according to claim 1 and concentration measuring method, it is characterised in that the step 2 can change
Different air-flow velocities are operated.
3. grain graininess according to claim 1 and concentration measuring method, it is characterised in that the step 4 can be surveyed repeatedly
Measure average value.
4. a kind of grain graininess and apparatus for measuring concentration, it is characterised in that including guide duct 1,1 area of section of guide duct is permanent
Fixed, one end of guide duct 1 is provided with air blower 2, and the other end of guide duct 1 is additionally provided with timer 5, is gone back on the guide duct 1
Be provided with the first charge detector 3 and the second charge detector 4,3 and second charge detector 4 of the first charge detector it
Between be provided with particle dust arrester 6, the lower end of the particle dust arrester 6 is connected by conduit 9 with water tank 8 with a scale, and the band is carved
Degree water tank 8 is placed on weigher 10, and the left end of the guide duct 1 is additionally provided with throttle valve 7.
5. grain graininess according to claim 1 and apparatus for measuring concentration, it is characterised in that the air blower 2 is automatically controlled
Type air blower.
6. grain graininess according to claim 1 and apparatus for measuring concentration, it is characterised in that second charge detector
4 positioned at the right side of the first charge detector 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711402201.4A CN108007835A (en) | 2017-12-22 | 2017-12-22 | A kind of grain graininess and concentration measuring method and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711402201.4A CN108007835A (en) | 2017-12-22 | 2017-12-22 | A kind of grain graininess and concentration measuring method and its device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108007835A true CN108007835A (en) | 2018-05-08 |
Family
ID=62060567
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711402201.4A Pending CN108007835A (en) | 2017-12-22 | 2017-12-22 | A kind of grain graininess and concentration measuring method and its device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1869648A (en) * | 2006-06-12 | 2006-11-29 | 中国科学院合肥物质科学研究院 | System for detecting harmful nano-particles in air |
| DE102008009494A1 (en) * | 2008-02-15 | 2009-08-27 | Fachhochschule Dortmund | Device for measuring concentration and/or size distribution of soot particles in diesel exhaust gas of diesel vehicle in workshops, has magnets exhibiting magnetic field to deflect particles to electrodes dependent on size |
| CN104181084A (en) * | 2014-08-26 | 2014-12-03 | 清华大学 | Aerosol sensor |
| CN104285140A (en) * | 2012-05-21 | 2015-01-14 | 株式会社岛津制作所 | Particle Count Meter |
| CN204789244U (en) * | 2015-06-23 | 2015-11-18 | 天津斯拓普科技有限公司 | Air particulate matter check weighing appearance |
| CN205175874U (en) * | 2015-12-11 | 2016-04-20 | 燕山大学 | Obtain that pollutant granule bumps and testing arrangement of efficiency under environment of physics field |
-
2017
- 2017-12-22 CN CN201711402201.4A patent/CN108007835A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1869648A (en) * | 2006-06-12 | 2006-11-29 | 中国科学院合肥物质科学研究院 | System for detecting harmful nano-particles in air |
| DE102008009494A1 (en) * | 2008-02-15 | 2009-08-27 | Fachhochschule Dortmund | Device for measuring concentration and/or size distribution of soot particles in diesel exhaust gas of diesel vehicle in workshops, has magnets exhibiting magnetic field to deflect particles to electrodes dependent on size |
| CN104285140A (en) * | 2012-05-21 | 2015-01-14 | 株式会社岛津制作所 | Particle Count Meter |
| CN104181084A (en) * | 2014-08-26 | 2014-12-03 | 清华大学 | Aerosol sensor |
| CN204789244U (en) * | 2015-06-23 | 2015-11-18 | 天津斯拓普科技有限公司 | Air particulate matter check weighing appearance |
| CN205175874U (en) * | 2015-12-11 | 2016-04-20 | 燕山大学 | Obtain that pollutant granule bumps and testing arrangement of efficiency under environment of physics field |
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Application publication date: 20180508 |