CN203069139U - Device for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed - Google Patents
Device for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed Download PDFInfo
- Publication number
- CN203069139U CN203069139U CN 201220701286 CN201220701286U CN203069139U CN 203069139 U CN203069139 U CN 203069139U CN 201220701286 CN201220701286 CN 201220701286 CN 201220701286 U CN201220701286 U CN 201220701286U CN 203069139 U CN203069139 U CN 203069139U
- Authority
- CN
- China
- Prior art keywords
- fluidized bed
- gas
- solid fluidized
- solid
- bubbles
- 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
Images
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model relates to a device for measuring the size and the movement speed of bubbles in a concentrated phase gas-solid fluidized bed. The device comprises a gas-solid fluidized bed, a diffuser chamber, an airflow distributing plate, a high-speed dynamic camera, a data signal display and a data acquisition output and storage device. A high-density magnetite powder medium solid is stood in a gas-solid fluidized bed body, compressed air is diffused to generate uniform and stable bubble flows in the fluidized bed, the high-speed dynamic camera arranged on the front part of the fluidized bed is regulated to capture movement images of the bubbles penetrating through some bed plane, image information is immediately displayed on the data signal display and is continuously transmitted to the data acquisition output and storage device, and then effective data of the size and the movement speed of the bubbles can be obtained after accurate calculation. The device and method have the advantages of simple structure, convenience for operation, easy control, high measurement precision, good reliability, capability of realizing accurate measurement and accurate prediction of the single bubbles in a stable gas-solid multi-phase flow, and wide application range.
Description
Technical field
This practical measurement mechanism that newly relates to a kind of bubble size and movement velocity, the measurement mechanism of bubble size and movement velocity during especially a kind of concentrated phase is gas-solid fluidized bed.
Background technology
The coal resources of China mainly are distributed in drought and water shortage areas such as Shanxi, Shaanxi, Inner Mongol, Xinjiang, adopt the technical difficulty of wet coal preparation very big, and therefore exploitation and popularization High Effective Dry Coal Beneficiation Technology are extremely urgent.Based on the concentrated phase high density fluidisation bed accessory of gas-solid multiphase flow advantages such as applied range, efficiency of separation height, environmental pollution be little are arranged, be applied to the dry coal preparation field gradually.This fluidized bed mainly is to form the uniform and stable diffusing formula bubbling fluidized bed of standard of each dot density in the bed by the abundant contact of gas-solid two-phase and stable-state flow, and separating by density stratification for coal particles provides good environment.Behavior such as bubble size and movement velocity is to judge that fluidized bed is in accurate particulate fluidization state and whether density keeps uniform and stable important evidence, thereby the density separation behavior of pressing of raw coal is produced fundamental influence.Study seldom at the measurement of the gas-solid fluidized bed middle bubble size of concentrated phase airtight polyphasic flow, particularly concentrated phase and movement velocity at present.
Practical fresh content
Technical matters: this practical new purpose is the concentrated phase gas-solid high density fluidisation bed that adopts at the coal dry separation, provide a kind of simple in structure, easy to operate, easy to control, measuring accuracy is high, the concentrated phase of good reliability, applied range gas-solid fluidized bed in the measurement mechanism of bubble size and movement velocity.
Technical scheme: this practical new gas-solid fluidized bed middle bubble size of concentrated phase and the measurement mechanism of movement velocity, in gas-solid fluidized bed bottom cloth general mood chamber and airflow-distribution board are set, gas-solid fluidized bed bottom and spinner-type flowmeter, blast control device, bellows chamber and blower fan are linked in sequence, be connected with the dynamic differential pressure measurement mechanism in gas-solid fluidized bed side, monitor the fluctuation situation of bed pressure drop in real time; Gas-solid fluidized bed inner set magnet breeze is main separating medium, and the fluidized bed front position is installed the high speed dynamic camera, and the camera lens of video camera can be regulated the bubble motion state that coverage is obtained differing heights bed plane automatically; High speed dynamic camera and data-signal display, data acquisition output and memory storage are linked in sequence, and bubble motion information can be gathered in real time and is delivered to follow-up data storage and analytic system; Adopt Data Management Analysis software that the data of gathering storage are carried out performance analysis and calculate, can obtain bubble size and the movement velocity at any bed height place in the fluidized bed.
The coverage of described high speed dynamic camera covers whole fluidized bed model area.
Beneficial effect, owing to adopted such scheme, behavior catches shooting to bubble motion to adopt the high speed dynamic camera, the resolution height, it is big to take frame number, has effectively avoided the picture catching error that causes soon owing to bubble size change frequency height, movement velocity; The high speed dynamic camera is connected with data-signal display, data acquisition output and memory device, immediately the bubble motion information that shooting is captured shows and gathers feedback, effectively avoided having improved measuring accuracy because the bubble motion information that signal delay produces receives error; The bubble motion information instant playback that seizure photographs is to the data-signal display, can observe shape, size and the motion state of bubble stream at any time, and according to bubble motion behavior adjustment operating parameter, make fluidized bed keep continuing to produce the accurate particulate fluidization state of microvesicle and vesicle; Bubble information in data acquisition output and the memory storage can adopt Data Management Analysis software to carry out accurate Calculation and handle, and obtains the valid data of bubble size and movement velocity.Use the measurement mechanism of the gas-solid fluidized bed middle bubble size of concentrated phase and movement velocity, efficiently solve the change in size of random motion bubble in the fluidized bed and the bottleneck that movement velocity can't directly be measured, improved measuring accuracy simultaneously, measuring error is very little, have simple in structure, control is convenient, the characteristics of good reliability, can be widely used in the accurate measurement of bubble stream law of dimension and movement velocity in other dense gas-solid multiphase flow.
Advantage: this measurement mechanism is simple in structure, easy to operate, easy to control, measuring accuracy is high, good reliability, the accurate measurement of bubble size and movement velocity in the dense gas-solid multiphase flow of energy realization, applied range, be applicable to the measurement of the gas-solid fluidized bed middle bubble motion behavior of concentrated phase, also be applicable to the measurement of bubble motion behavior in other dense gas-solid multiphase flow, accurate prediction and calculation and the choosing of sorting operating parameter of gas-solid fluidized bed separating density had significant values and meaning.
Description of drawings
Fig. 1 is this practical new gas-solid fluidized bed middle bubble size of concentrated phase and the work structuring figure of movement velocity measurement mechanism.
Among the figure: 1, blower fan; 2, bellows chamber; 3, blast control device; 4, spinner-type flowmeter; 5, cloth general mood chamber; 6, airflow-distribution board; 7, gas-solid fluidized bed; 8, dynamic differential pressure measurement mechanism; 9, high speed dynamic camera; 10, data-signal display; 11, data acquisition output and memory storage.
Embodiment
Below in conjunction with accompanying drawing this practical new embodiment is further described:
Embodiment 1: bubble size and movement velocity measurement mechanism had measurement mechanism and measuring method during this practical new concentrated phase was gas-solid fluidized bed.
Bubble size and movement velocity measurement mechanism, cloth general mood chamber 5 and airflow-distribution board 6 are set in gas-solid fluidized bed 7 bottom, gas-solid fluidized bed bottom and spinner-type flowmeter 4, blast control device 3, bellows chamber 2 and blower fan 1 are linked in sequence, and are connected with dynamic differential pressure measurement mechanism 8 in gas-solid fluidized bed side; In gas-solid fluidized bed positive front portion high speed dynamic camera 9 is set, adjusts to best shooting angle and position; High speed dynamic camera 9 is linked in sequence with data-signal display 10, data acquisition output and memory storage 11, and taking the bubble motion information that captures can be delivered on the data-signal display 10 in real time.
Described high speed dynamic camera 9 is united use with data-signal display 10, data acquisition output and memory storage 11, and Real Time Observation detects the motion change situation of bubble in gas-solid fluidized bed 7.
Bubble size and movement velocity measuring method, at first regulate the quiescent bed layer height in gas-solid fluidized bed 7, the height of quiescent bed layer height is 3/5 of integral bed layer height, the quiescent bed layer height is that the high-density magnet breeze is added the apparent height that fluidized bed presents later on, choosing granularity successively is respectively-0.3+0.15mm, in the high-density magnet breeze of-0.15+0.074mm and-0.074+0.045mm any adds in gas-solid fluidized bed 7, open blower fan, the pressurized air that feeds is behind airflow-distribution board 6 even distributing winds, enter fluidized bed body, make the high-density magnet breeze in gas-solid fluidized bed 7 produce fluidisation, after treating the complete fluidisation of high-density magnet breeze, open dynamic differential pressure measurement mechanism 8, detect the fluctuation situation of bed pressure drop, described dynamic differential pressure measurement mechanism 8 is the fluctuation situation of monitoring bed pressure drop in real time, in order to come control operation gas speed by regulating spinner-type flowmeter 4 at any time, assurance bubble motion information measurement result's is reliable and stable, by regulating spinner-type flowmeter control gas speed fluctuation range, through 30 seconds, after high-density magnet breeze fluidisation is stable, produce uniform and stable bubble stream in the fluidized bed, and based on micro-bubble and vesicle; To fluidized bed, bed height is the position of 5cm, and the bubble motion state that passes the whole bed layer cross section is taken seizure with the camera adjusting of high speed dynamic camera 9; Take continuously and obtain bubble at the movable information of 10s in the time period, instant playback and is delivered to data acquisition output unit 11 on data-signal display 10; Adjust the camera site of high speed dynamic camera, be that bubble motion state in 5-28cm interval is taken seizure to fluidized bed model bed height, and effective bubble motion information all is passed to data acquisition output unit 11; Treat to the bubble motion state of different height of bed position all gather finish after, adopt data analysis software that the bubble information in data collection output and the memory storage 11 is carried out comprehensive computational analysis, can obtain bubble size and the movement velocity at any bed height place in gas-solid fluidized bed 7.
Described data-signal display 10 is united use with data acquisition output and memory storage 11, detects the motion change situation of bubble in gas-solid fluidized bed 7 in real time.
Bubble size and movement velocity measurement mechanism during this practical new concentrated phase is gas-solid fluidized bed mainly are made of gas-solid fluidized bed 7, cloth general mood chamber 5, airflow-distribution board 6, high speed dynamic camera 9, data-signal display 10, data acquisition output and memory storage 11.Gas-solid fluidized bed 7 pass through cloth general mood chamber 5 is connected with air feed system, regulates the air-flow flux by spinner-type flowmeter 4; High speed dynamic camera 9 and data-signal display 10 close-coupled guarantee the real-time that shows; Data-signal display 10 and data acquisition output and memory storage 11 close-coupled have also guaranteed the real-time reliable delivery storage of bubble motion information; Dynamic differential pressure measurement mechanism 8 is installed in gas-solid fluidized bed 7 sidewall, detects the fluctuation of pressure drop situation of fluidized bed in real time, stablizes gas speed and has vital role regulating.
Claims (1)
- A concentrated phase gas-solid fluidized bed in the measurement mechanism of bubble size and movement velocity, it is characterized in that: measurement mechanism mainly is made of gas-solid fluidized bed 7, cloth general mood chamber 5, airflow-distribution board 6, high speed dynamic camera 9, data-signal display 10, data acquisition output and memory storage 11, in gas-solid fluidized bed bottom cloth general mood chamber and airflow-distribution board are set, gas-solid fluidized bed bottom and spinner-type flowmeter, blast control device, bellows chamber and blower fan are linked in sequence, and are connected with the dynamic differential pressure measurement mechanism in gas-solid fluidized bed side; Gas-solid fluidized bed inner set magnet breeze is main separating medium, and the fluidized bed front position is installed the high speed dynamic camera, and the camera lens of video camera can be regulated the bubble motion state that coverage is obtained differing heights bed plane automatically; High speed dynamic camera and data-signal display, data acquisition output and memory storage are linked in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701286 CN203069139U (en) | 2012-12-18 | 2012-12-18 | Device for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220701286 CN203069139U (en) | 2012-12-18 | 2012-12-18 | Device for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069139U true CN203069139U (en) | 2013-07-17 |
Family
ID=48767917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220701286 Expired - Fee Related CN203069139U (en) | 2012-12-18 | 2012-12-18 | Device for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203069139U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047932A (en) * | 2012-12-18 | 2013-04-17 | 中国矿业大学 | Device and method for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed |
| CN109520910A (en) * | 2018-12-19 | 2019-03-26 | 东北大学 | Consider the measuring device and method of the aspherical particle drag coefficient of wall effect |
| CN110038796A (en) * | 2019-04-30 | 2019-07-23 | 中国矿业大学 | A kind of step variable orifice diameter cloth general mood consolidates fluidized bed for separation device and method |
| CN111097693A (en) * | 2019-12-27 | 2020-05-05 | 河南理工大学 | Continuous drying and sorting integrated equipment and method for wet fine coal |
-
2012
- 2012-12-18 CN CN 201220701286 patent/CN203069139U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047932A (en) * | 2012-12-18 | 2013-04-17 | 中国矿业大学 | Device and method for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed |
| CN109520910A (en) * | 2018-12-19 | 2019-03-26 | 东北大学 | Consider the measuring device and method of the aspherical particle drag coefficient of wall effect |
| CN110038796A (en) * | 2019-04-30 | 2019-07-23 | 中国矿业大学 | A kind of step variable orifice diameter cloth general mood consolidates fluidized bed for separation device and method |
| CN111097693A (en) * | 2019-12-27 | 2020-05-05 | 河南理工大学 | Continuous drying and sorting integrated equipment and method for wet fine coal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103047932A (en) | Device and method for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed | |
| CN203069139U (en) | Device for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed | |
| CN208984664U (en) | A kind of PIV solid-state trace displaying particle generator | |
| CN103706219A (en) | Device for removing fine particles by joint action of acoustic agglomeration and mist spray and method of device | |
| CN102661912B (en) | Measuring device and measuring method for drag coefficient of irregular particle | |
| CN103091132A (en) | External loading type unpowered atmospheric particulate sampler | |
| CN102778322B (en) | Device and method for measuring stress of coal particle in concentrated phase gas-solid fluidized bed | |
| CN107782644A (en) | A kind of power plant soot particle diameter distribution on-line measuring device and its detection method | |
| CN103207211A (en) | Device and method for measuring liquid metal two-phase flow void fraction | |
| CN207636444U (en) | A kind of power plant soot particle diameter distribution on-line measuring device | |
| CN100458372C (en) | Particle picture velocity measuring method for accurately measuring construction and city space | |
| CN208270376U (en) | A kind of granularity on-line monitoring system | |
| CN107588885A (en) | The pressure field measurement apparatus and method that a kind of Biomimetic Fish is wagged the tail | |
| CN207488127U (en) | A kind of image method pulverized coal particle Fineness equipment | |
| CN104777007A (en) | Combined type dust-removing testing device and testing method | |
| CN204882604U (en) | Novel intelligence material speed of suspension test bench | |
| CN204514367U (en) | A kind of gas-solid diphasic stream parameter pick-up unit | |
| CN204556287U (en) | Combined Dust Removal Experiment device | |
| CN207570974U (en) | Automatic sampling fineness of pulverized coal on-line measurement device | |
| CN102198426B (en) | Multiple combined apparatus for air flow distribution board of electrostatic precipitator | |
| CN203310630U (en) | Bearing detecting and counting device | |
| CN211303419U (en) | Corona hypertrophy data acquisition system based on sensing nodes | |
| CN109612699A (en) | A kind of PM2.5The evaluating apparatus of turbulent flow reunion device efficiency | |
| CN205157383U (en) | Minimum discharge cigarette dust content of thermal power plant test system | |
| CN202376713U (en) | Non-contact type table tennis returning drop point training device with speed detection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |