CN207396525U - The continuous multiple spot tachymeter of particle cluster in a kind of Dual-Phrase Distribution of Gas olid - Google Patents
The continuous multiple spot tachymeter of particle cluster in a kind of Dual-Phrase Distribution of Gas olid Download PDFInfo
- Publication number
- CN207396525U CN207396525U CN201721390959.6U CN201721390959U CN207396525U CN 207396525 U CN207396525 U CN 207396525U CN 201721390959 U CN201721390959 U CN 201721390959U CN 207396525 U CN207396525 U CN 207396525U
- Authority
- CN
- China
- Prior art keywords
- dual
- fiber optic
- fiber
- particle cluster
- optical fiber
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a kind of continuous multiple spot tachymeters of particle cluster in Dual-Phrase Distribution of Gas olid, including power supply, laser diode, photodiode, optical fiber probe, A/D converter, computer, the optical fiber probe is made of side by side multiple identical fiber optic bundles, include launching fiber and reception optical fiber in each fiber optic bundle, launching fiber is connected with laser diode, reception optical fiber is connected with photodiode, and laser diode and photodiode are connected respectively with power supply；The A/D converter is connected with photodiode, and computer is connected with A/D converter.Fiber optic measuring apparatus provided by the utility model uses multimetering, kinetic characteristic according to aggregate arranges multiple fiber optic bundles, rationally sets the spacing between fiber optic bundle, is packaged into probe insertion Dual-Phrase Distribution of Gas olid, multiple fiber-optic signals are collected, obtain the continuous multiple spot movement velocity of particle cluster.
Description
Technical field
The invention belongs to Measurement technical fields, and in particular to particle agglomeration in a kind of measurement Dual-Phrase Distribution of Gas olid
The fiber optic measuring device of the continuous multiple spot movement velocity of object.
Background technology
Dual-Phrase Distribution of Gas olid is widely used in the industrial production, such as coal-burning boiler, catalyst cracker, solid particle
Geldart-D particle etc..In Dual-Phrase Distribution of Gas olid, particle is deposited simultaneously in the form of the discrete particles of dilute phase and the particle cluster of concentrated phase
.Particle cluster has larger impact to the gas-solid mixing, heat and mass transfer efficiency of gas solid reactor, is gas-particle two-phase
Flow the structure of researcher's emphasis observation and analysis.
The parameter for measuring aggregate and characterizing at present mainly has size, internal particle concentration, movement velocity, residence time
Deng, few measurement introductions to aggregate acceleration, in most cases the speed of aggregate is regarded as constant, ignores acceleration
Degree.In fact, weak interaction of the aggregate between by external fluid mechanical function and internal particle, constantly polymerize and scattered,
Speed also changes therewith.It needs to measure its continuous multiple spot movement velocity, and then calculates the acceleration of aggregate,
To understand the evolutionary process of particle cluster in depth, the variations in flow patterns for studying Dual-Phrase Distribution of Gas olid is significant.
Current existing particle cluster measuring method mainly has optical fiber probe, capacitance probe, momentum to pop one's head in, take the photograph at a high speed
Picture, laser Doppler method, ray method etc..Wherein optical fiber probe is hardly influenced by factors such as temperature and external electromagnetic fields, there is body
The features such as small stream field interference of product is small, precision is high, at low cost, using more in the measurement of fluid bed.Optical fiber probe mainly leads to
The transmission or reflection measurement local particle concentration of laser is crossed, the fiber-optic signal adjacent to two carries out cross-correlation analysis, can obtain
Transient motion speed when passing through probe to particle cluster.Existing optical fiber probe is not met by continuous to particle cluster
The demand of the measurement of multiple spot movement velocity.
The content of the invention
The purpose of this utility model is to provide a kind of continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid, with
Solve the demand that existing optical fiber probe is not met by the measurement to the continuous multiple spot movement velocity of particle cluster.
To achieve the above object, the technical solution adopted by the present invention is：
The continuous multiple spot tachymeter of particle cluster in a kind of Dual-Phrase Distribution of Gas olid, including power supply, laser diode, photoelectricity two
Pole pipe, optical fiber probe, A/D converter, computer, the optical fiber probe are made of side by side multiple identical fiber optic bundles, Mei Geguang
Include launching fiber and reception optical fiber in fine beam, launching fiber is connected with laser diode, and reception optical fiber connects with photodiode
It connects, laser diode and photodiode are connected respectively with power supply；The A/D converter is connected with photodiode, computer
It is connected with A/D converter.
Further, each fiber optic bundle is encapsulated in a metal tube.
Further, multiple fiber optic bundles are mutually parallel.
Further, multiple fiber optic bundles are encapsulated in an optical fiber long tube.
Further, the optical fiber long tube smooth outer surface is antistatic.
Further, one end of the optical fiber long tube insertion Dual-Phrase Distribution of Gas olid, multiple fiber optic bundles expose outside optical fiber long tube, with
Reduce when measuring to the obstruction of Dual-Phrase Distribution of Gas olid.
Further, the distance of adjacent fiber optic bundle is identical；And the spacing of adjacent fiber beam is more than individual particle diameter, and
Size with particle cluster is in the same order of magnitude, and for general range in 1mm ~ 20mm, measuring condition is that particle cluster passes through three
Structure does not vary widely after a fiber optic bundle.
Further, multiple fiber optic bundles are fixed by multiple fixing pieces.
Advantageous effect：Movement velocity when existing optical fiber probe can only measure aggregate by probe, this practicality
The fiber optic measuring apparatus of new offer uses multimetering, and the kinetic characteristic according to aggregate arranges multiple fiber optic bundles, rationally sets
Spacing between fiber optic bundle is packaged into probe insertion Dual-Phrase Distribution of Gas olid, collects multiple fiber-optic signals, obtain particle cluster
Continuous multiple spot movement velocity.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is inserted into for the continuous multiple spot tachymeter of particle cluster in the Dual-Phrase Distribution of Gas olid of the utility model inside fluid bed
The schematic diagram of measurement；
Fig. 3 is the A-A sectional views of Fig. 1；
In figure, 1- fluid beds；2- optical fiber long tubes；The first fiber optic bundles of 3-, the second fiber optic bundles of 4-, the 3rd fiber optic bundles of 5-, 6- swash
Optical diode；7- photodiodes；8- photo-couplers；9- power supplys；10-A/D converters；11- computers；12-- launching fibers；
13- reception optical fibers；14- fixing pieces.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
It is as shown in Figure 1 a kind of continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid, including power supply 9, laser
Diode 6, photodiode 7, optical fiber probe, A/D converter 10, computer 11, the optical fiber probe is by multiple identical light
Fine beam is formed side by side, and in the present embodiment, the quantity of fiber optic bundle is preferably 3, be respectively the first fiber optic bundle 3, the second fiber optic bundle 4,
3rd fiber optic bundle 5, each fiber optic bundle is interior to include launching fiber 12 and reception optical fiber 13, and launching fiber 12 connects with laser diode 6
It connects, reception optical fiber 13 is connected with photodiode 7, and laser diode 6 and photodiode 7 are connected respectively with power supply 9；A/D turns
Parallel operation 10 is connected with photodiode 7, and computer 11 is connected with A/D converter 10.
Each fiber optic bundle is individually encapsulated in a metal tube.First fiber optic bundle 3, the second fiber optic bundle 4, the 3rd fiber optic bundle
5 section is the square of length of side 2mm.
Three fiber optic bundles are mutually parallel.The distance of adjacent fiber optic bundle is identical；And the spacing of adjacent fiber beam is more than single
Particle diameter, and with the size of particle cluster in the same order of magnitude, for general range in 1mm ~ 20mm, measuring condition is cluster of grains
Polymers structure after three fiber optic bundles does not vary widely.Preferably, the spacing between fiber optic bundlelFor 10mm.
Three fiber optic bundles are fixed by multiple fixing pieces 14, and are encapsulated in an optical fiber long tube 2；2 appearance of optical fiber long tube
Face is smooth antistatic.Optical fiber long tube 2 is inserted into one end of Dual-Phrase Distribution of Gas olid, and three fiber optic bundles expose outside optical fiber long tube 2, exposed length
For 5mm, it is therefore an objective to reduce interference of the measurement end to Dual-Phrase Distribution of Gas olid.
Laser diode 6 and photodiode 7 are powered by power supply 9.Photodiode 7 is converted to the optical signal received
A/D converter 10 is transported to after voltage signal, converts analog signals into digital signal.Computer 11 is obtained by A/D converter 10
Three voltage signals are taken, represent the granule density variation that the first fiber optic bundle 3, the second fiber optic bundle 4, the 3rd fiber optic bundle 5 measure respectively,
Voltage signal is directly proportional to granule density.
It is illustrated in figure 2 the schematic diagram of the particle cluster of vertical movement in the utility model measurement fluid bed.During measurement,
Optical fiber long tube 2 is inserted into fluid bed 1,50 ~ 500 μm of 1 endoparticle size of fluid bed, particle speed is 1 ~ 10m/s.Measure particle
The sample frequency of the fiber optic measuring apparatus of aggregate accelerationfMore than 10kHz.First fiber optic bundle 3, the second fiber optic bundle 4, the 3rd optical fiber
The orientation of beam 5 is identical with particle stream direction.Laser is sent from laser diode 6, and first is projected on by launching fiber 12
Fiber optic bundle 3, the second fiber optic bundle 4, the front of the 3rd fiber optic bundle 5 particle on.The reflected light of particle is transferred to light by reception optical fiber 13
Electric diode 7 is converted into voltage signal, then is converted to three time serieses by A/D converter 10X(t),Y(t),Z(t), point
The fiber-optic signal of fiber optic bundle 3,4,5 is not corresponded to, is stored in computer 11.By the way that process is handled as follows to signal, available
The movement velocity of continuous 2 points of aggregate of grain and corresponding acceleration：
It is right respectively by related coefficient calculation formula firstX(t)WithY(t),Y(t)WithZ(t)Seek the delay points N of signal.By
FormulaThe time delay of signal is obtained, i.e. aggregate passes through the time interval of fiber optic bundleτ 1Withτ 2, whereinfFor sampling
Frequency.
By formulaRespectively obtain two speed of aggregatev 1,v 2, whereinlBetween adjacent fiber beam away from
From.v 1,v 2Average speed when representing particle cluster respectively by fiber optic bundle 3,4 and fiber optic bundle 4,5.
By Acceleration FormulaAcceleration when can obtain particle cluster by optical fiber probea。
The method that measuring and calculating particle cluster acceleration is carried out above by fiber-optic signal belongs to known skill commonly used in the art
Art is not belonging to the improvement of the utility model, therefore the utility model is not related to the improvement of computer program.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid, it is characterised in that：Including power supply, two pole of laser
Pipe, photodiode, optical fiber probe, A/D converter, computer, the optical fiber probe is by multiple identical fiber optic bundles structure side by side
Into each fiber optic bundle is interior to include launching fiber and reception optical fiber, and launching fiber is connected with laser diode, reception optical fiber and photoelectricity
Diode connects, and laser diode and photodiode are connected respectively with power supply；The A/D converter connects with photodiode
It connects, computer is connected with A/D converter.
2. the continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid according to claim 1, it is characterised in that：Often
A fiber optic bundle is all encapsulated in a metal tube.
3. the continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid according to claim 1, it is characterised in that：It is more
A fiber optic bundle is mutually parallel.
4. the continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid according to claim 1, it is characterised in that：It is more
A fiber optic bundle is encapsulated in an optical fiber long tube.
5. the continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid according to claim 4, it is characterised in that：Institute
State optical fiber long tube smooth outer surface.
6. the continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid according to claim 4, it is characterised in that：Institute
One end of optical fiber long tube insertion Dual-Phrase Distribution of Gas olid is stated, multiple fiber optic bundles expose outside optical fiber long tube.
7. the continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid according to claim 1, it is characterised in that：Phase
The distance of adjacent fiber optic bundle is identical；And the spacing of adjacent fiber beam be more than individual particle diameter, and with the size of particle cluster
In the same order of magnitude.
8. the continuous multiple spot tachymeter of particle cluster in Dual-Phrase Distribution of Gas olid according to claim 1, it is characterised in that：It is more
A fiber optic bundle is fixed by multiple fixing pieces.
9. the continuous multiple spot tachymeter of particle cluster in the Dual-Phrase Distribution of Gas olid according to claim 1,3,4,6 or 8, special
Sign is：The quantity of the fiber optic bundle is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721390959.6U CN207396525U (en) | 2017-10-26 | 2017-10-26 | The continuous multiple spot tachymeter of particle cluster in a kind of Dual-Phrase Distribution of Gas olid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721390959.6U CN207396525U (en) | 2017-10-26 | 2017-10-26 | The continuous multiple spot tachymeter of particle cluster in a kind of Dual-Phrase Distribution of Gas olid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207396525U true CN207396525U (en) | 2018-05-22 |
Family
ID=62330369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721390959.6U Expired - Fee Related CN207396525U (en) | 2017-10-26 | 2017-10-26 | The continuous multiple spot tachymeter of particle cluster in a kind of Dual-Phrase Distribution of Gas olid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207396525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029888A (en) * | 2021-03-31 | 2021-06-25 | 中国科学院过程工程研究所 | Device and method for calibrating particle concentration in gas-solid two-phase flow |
-
2017
- 2017-10-26 CN CN201721390959.6U patent/CN207396525U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029888A (en) * | 2021-03-31 | 2021-06-25 | 中国科学院过程工程研究所 | Device and method for calibrating particle concentration in gas-solid two-phase flow |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kliafas et al. | LDV measurements of a turbulent air-solid two-phase flow in a 90 bend | |
| CN102435237B (en) | Gas-solid two-phase flow parameter detector | |
| CN207396525U (en) | The continuous multiple spot tachymeter of particle cluster in a kind of Dual-Phrase Distribution of Gas olid | |
| CN101839889A (en) | Particle velocity distribution arc static sensor array measuring method and device thereof | |
| CN104777080B (en) | The on-line measuring device and method of gas pipeline endoparticle and drop | |
| CN103335813B (en) | A kind of airflow anti-phase opposite thrust sand collector | |
| CN105548607A (en) | Probe of measuring gas-solid two-phase flow particle slip velocity and measurement method | |
| Tu et al. | A review of experimental techniques for measuring micro-to nano-particle-laden gas flows | |
| Wiener et al. | Influence of turbulence on aerosol sampling efficiency | |
| Birchenough et al. | Local particle velocity measurements with a laser anemometer in an upward flowing gas—solid suspension | |
| CN204679522U (en) | A kind of in large space to the device that air-flow velocity is measured | |
| CN208060752U (en) | A kind of infrared rainfall gauge of two-dimensional array type | |
| Lesinski et al. | Laser doppler anemometry measurements in gas‐solid flows | |
| CN214584718U (en) | Multichannel sensing system | |
| CN106124371B (en) | A kind of Dual-Phrase Distribution of Gas olid fineness measurement device and measurement method based on electrostatic method | |
| CN208187912U (en) | The fibre-optical probe measuring instrument of particle speed and concentration in a kind of multiphase flow | |
| CN109932291B (en) | Electrostatic induction dust concentration detection device based on vortex street | |
| CN206399485U (en) | A kind of many elevation sediment discharge intensity synchronous measuring apparatus of laser light scattering | |
| Schmitt et al. | A transputer‐based measuring system for decentralized signal processing, applied to two‐phase flow | |
| CN205981120U (en) | Volumetric apparatus based on belt weigher | |
| CN1963419A (en) | Measuring method and system of temperature field of melt-blown nonwoven jet-stream wind | |
| CN109211343B (en) | Dense-phase particle flow measuring instrument and measuring method under high-temperature strong magnetic field | |
| CN211291601U (en) | Flow meter rectifying and noise reducing device | |
| CN204269170U (en) | A kind of small-bore ultrasonic gas flow air chamber | |
| CN105698747B (en) | A kind of light curtain target rod-shaped flyer attitude parameter acquisition methods in testing the speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 Termination date: 20191026 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |