CN205898096U - Pneumatic drying and integrated experimental system of boundary layer survey are reinforceed to sound field - Google Patents
Pneumatic drying and integrated experimental system of boundary layer survey are reinforceed to sound field Download PDFInfo
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- CN205898096U CN205898096U CN201620053403.7U CN201620053403U CN205898096U CN 205898096 U CN205898096 U CN 205898096U CN 201620053403 U CN201620053403 U CN 201620053403U CN 205898096 U CN205898096 U CN 205898096U
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- sound field
- boundary region
- dried
- flow according
- boundary layer
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Abstract
The utility model provides an intensive pneumatic drying of sound field and boundary layer survey integrated system, includes dry air circulating device, removable air flow distribution device, sound wave generating device, by dry thing weight measurement device and boundary layer survey device, dry air circulating device comprises the fan, by dry thing weight device by precision balance constitute, precision balance connects and has or not paper record appearance, the exit of fan form closed -loop through importing and exporting the circulating line with the drying cabinet intercommunication respectively, boundary layer survey device comprises the hot resistance thermometer C, pitot tube and the displacement ware that stretch into in the gas flow tube way, be provided with orifice flowmeter on the export air cycle pipe to it has the differential gauge to ally oneself with at orifice flowmeter both ends. This experimental system can be determined by the drying rate curve of dry thing under the invariable drying condition, investigates flow field and the influence of sound wave to dry run, determines velocity boundary layer and temperature boundary layer.
Description
Technical field
This utility model belongs to technical field of drying, is related to pneumatic conveying drying, is specifically related to a kind of sound field strengthening flow and is dried and boundary region mensure Integrated Experimentation System.
Background technology
Pneumatic conveying drying experimental facilitiess are mainly used in measuring the convective drying speed of material, determine the degree of drying in dry run, understand equilibrium relation in solid and gas for the hygroscopic water, contribute to holding the basic law of dry materials.The resistance of Optimization of Gas Flow Drying is concentrated mainly on boundary region.By Velocity Profiles and the temperature gradient distribution of Measured Boundary layer it is possible to understand that the definition of boundary region and its meaning in heat and mass with dry run, change airflow field obvious to Optimization of Gas Flow Drying function influence.Its means includes being introduced into sound field to change airflow field it is also possible to arrangement airflow-distribution board to change airflow field in gas channel,.In existing pneumatic conveying drying experimental system, there are no and measure integrated system with boundary region.Also there are no by being superimposed sound field or changing the integrated system that airflow-distribution board changes flow field.Existing boundaries layer measurement system, in the thermograde of Measured Boundary layer, due to the hot blast constantly heat effect to object to be dried surface, lead to the constant temperature of nearly dried object wall to increase and so that the thermograde of boundary region is difficult to determine.And boundary region is in close relations with Optimization of Gas Flow Drying.Therefore, a kind of sound field strengthening flow of exploitation is dried and measures Integrated Experimentation System with boundary region, has great significance in the parameter determination of drying system and the determination of boundary region and the mensure resonable engineering of touching upon of the sound field and flow field impact to dry run.
Content of the invention
For solving the above problems, this application provides a kind of sound field strengthening flow is dried measures integrated system with boundary region.This system can different hot-air is dried under the conditions of measure the rate of drying curve of different material；And hot fluid can be measured in the Temperature Distribution of heating object near wall slight distance and VELOCITY DISTRIBUTION.
This utility model is achieved by following technical solution.
A kind of sound field strengthening flow is dried and measures Integrated Experimentation System with boundary region, it is characterized in that: include dry air circulating device, dried object Weight measurement device, boundary region measures device, removable sound field assembly apparatus, removable air flow method panel assembly, described dry air circulating device is made up of blower fan, described dried object Weight apparatus are made up of the precision balance being arranged on drying baker, it is connected with recording instrument without paper on described precision balance, the inlet and outlet of described blower fan is passed through inlet air circulating line respectively and is connected formation closed-loop path with drying baker with outlet circulating line, described boundary region measures device and is made up of the thermal resistance thermometer c stretching in airflow line and pitot tube.
Butterfly valve a, butterfly valve b and butterfly valve c are respectively arranged with described inlet air circulation pipe.
It is provided with orifice flowmeter on described outlet air circulation pipe, and have differential manometer at orifice flowmeter two ends.
It is also equipped with electric heater in described outlet air circulation pipe.
Described thermal resistance thermometer c and pitot tube are integrated on same shifter.
It is provided with one piece of hollow temperature-constant plate in described airflow line, and hollow temperature-constant plate is connected with external water source by cooling water pipe.
Thermal resistance thermometer b is provided with described drying baker.
It is provided with humidity sensor on described drying baker.
Described outlet air circulation pipe is provided with thermal resistance thermometer a at orifice flowmeter.
Described outlet air circulation pipe is away from being provided with thermal resistance thermometer d at orifice flowmeter.
Described electric heater adopts electrical heating coil pipe.
The beneficial effects of the utility model are:
Compared with prior art, this utility model has a following distinguishing feature:
(1) in air-flow heating, a large amount of hot-air cyclic drying dried object in the entire system, dried object contained humidity is made to be much smaller than the saturated humidity of gas, gas only needs to after being heated supplement heat loss, greatlys save the energy needed for heating air in system；
(2) it is provided with removable sound field assembly apparatus in this utility model, air-flow field distribution can be affected by changing sound field frequency and amplitude；
(3) this utility model is provided with removable airflow-distribution board.Air-flow field distribution can be affected by changing airflow-distribution board；
(4) boundary region measures and adopts shifter, enables the small and exact shift of temperature and differential pressure measurement probe, and can go out displacement by direct reading；
(5) make constant temperature plate temperature keep constant using water cooling mode, be conducive to the accurate measurement of boundary layer temperature distribution and the determination of boundary region；
(6) weighing of dried object takes underslung weighing mode, decreases the impact of gas flowing counterweight amount determination data accuracy；
(7) the air quantity regulation humidity regulation of blower fan relies on three butterfly valves in pipe-line system to carry out the simplification it is achieved that adjusting means；
(8) record of all experimental datas and data-time graph are drawn and all can be completed on recording instrument without paper, high degree of automation.
Brief description
Fig. 1 is planar structure schematic diagram of the present utility model.
In figure: 1- butterfly valve a, 2- butterfly valve b, 3- blower fan, 4- butterfly valve c, 5- drying baker, 6- orifice flowmeter, 7- precision balance, 8- dried object, 9- recording instrument without paper, 10- differential manometer, 11- thermal resistance thermometer a, 12- thermal resistance thermometer b, 13- humidity sensor, 14- thermal resistance thermometer c, 15- pitot tube, 16- shifter, 17- thermal resistance thermometer d, 18- electric heater, 19- airflow line, 20- cooling water pipe, 21- inlet air circulation pipe, 22- outlet air circulation pipe, 23- sonic generator, the replaceable airflow-distribution board of 24-.25- temperature-constant plate
Specific embodiment
Further describe the technical solution of the utility model below in conjunction with the accompanying drawings, but claimed scope be not limited to described.
As shown in Figure 1, a kind of sound field strengthening flow described in the utility model is dried and measures Integrated Experimentation System with boundary region, including dry air circulating device, dried object Weight measurement device, boundary region measures device, removable sound field assembly apparatus, dry air circulating device described in removable air flow method panel assembly is made up of blower fan 3, described dried object Weight apparatus are made up of the precision balance 7 being arranged on drying baker 5, it is connected with recording instrument without paper 9 on described precision balance 7, when using, the weight of dried object matter is weighed by tight balance 7, and display is recorded by recording instrument without paper 9；The inlet and outlet of described blower fan 3 is passed through inlet air circulating line 21 respectively and is connected formation closed-loop path with drying baker 5 with outlet circulating line 22, and sound wave generating device 23 is arranged on the top of drying baker 5；Replaceable airflow-distribution board 24 is arranged on drying baker 5 wherein；Described boundary region measures device and is made up of the thermal resistance thermometer c14 stretching in airflow line 19 and pitot tube 15.Described thermal resistance thermometer c14 is used for measuring boundary layer temperature distribution, and pitot tube 15 is used for measuring boundary layer velocity distribution.This utility model finds out that dry rate is the fastest, drying efficiency highest constant drying rate stage using large quantity of air dried material it is desirable to being optimized to drying condition and strengthening.The resistance of dry run concentrates on the boundary region on dried object matter surface, and pneumatic conveying drying experimental system requires accurately and conveniently measure the material rate-of-loss of coolant stage the fastest.The boundary region of dried object also can be determined by experimental system test instrumentation and measuring method；Experimenter also can be by the definition of this set system grasp speed and temperature boundary layer and measuring method.
Butterfly valve a1, butterfly valve b2 and butterfly valve c4 are respectively arranged with described inlet air circulation pipe 21.By butterfly valve a1, butterfly valve b2 and butterfly valve c4, the air quantity of blower fan 3 is controlled, thus systematic air flow and humidity are adjusted it is achieved that air quantity adjust simplification.
It is provided with orifice flowmeter 6 on described outlet air circulation pipe 22, and be provided with differential manometer 10 at orifice flowmeter 6 two ends.So, the differential manometer 10 that recyclegas flow can be reflected in herein by orifice flowmeter 6 measures.It is achieved thereby that measuring to total system air flow.
It is also equipped with electric heater 18 in described outlet air circulation pipe 22.Dry cycle air temperature is controlled by electric heater 18.
Described thermal resistance thermometer c14 and pitot tube 15 are integrated on same shifter 16.Displacement, measurement temperature and VELOCITY DISTRIBUTION by shifter 16 accurate adjustment thermal resistance thermometer c14 and pitot tube 15.
It is provided with one piece of hollow temperature-constant plate in described airflow line 19, and hollow temperature-constant plate is connected with external water source by cooling water pipe 20.So, air-flow, in air circulating umbilical inner recirculation flow through hollow constant temperature plate surface, is connected with external water source holding constant temperature by cooling water pipe 20.Form stable Temperature Distribution in constant temperature plate surface.The temperature making boundary region keeps constant, is conducive to the accurate measurement of boundary layer temperature gradient and the determination of boundary region.
Described drying baker 5 side top is provided with removable sound field assembly apparatus 23, for investigating the impact to dry run for the sound field.
It is provided with changeable type airflow-distribution board 24 in described drying baker 5,.For changing the flow field by dried object, and then investigate the impact to dry run for the flow field.
It is provided with thermal resistance thermometer b12 on described drying baker 5.For measuring the temperature by circulating current at drying baker 5.
It is provided with humidity sensor 13 on described drying baker 5.For measuring the humidity by circulating current at drying baker 5.
Described outlet air circulation pipe 22 is provided with thermal resistance thermometer a11 at orifice flowmeter 6.For measuring the temperature by circulating current herein.
Described outlet air circulation pipe 22 is provided with thermal resistance thermometer d17 away from orifice flowmeter 6.For measuring the temperature by circulating current herein.
Described electric heater 18 adopts electrical heating coil pipe.
In technique scheme, temperature everywhere and pressure all can directly display on the control panel of recording instrument without paper 9.
As shown in Figure 1, air-flow drying method of the present utility model is: air is sent by blower fan 3, enter electric heater 18 heating and become hot-air after orifice flowmeter 6 metering, enter after boundary region measures device again in drying box 5, 5 terminations side are provided with removable sound field assembly apparatus 23 and send sound wave, air-flow occurs flow pattern to change through airflow-distribution board 24 again, air-flow now is under sound field and the collective effect of airflow-distribution board, air-flow carries out heat transfer and mass transfer with the dried object 8 of suspension in drying box 5, the temperature of circulating current is measured by thermal resistance thermometer 12 herein, humidity is measured by humidity sensor 13；Dried object 8 weight hanging is measured by precision balance 7；Then hot-air is returned to blower fan 3 and forms a circulation.
By being arranged at the air inflow of butterfly valve a1 at fan inlet and butterfly valve b2 control system fresh air, butterfly valve c4 controls the output of fresh air in whole system for the regulation of described air quantity.
Claims (10)
1. a kind of sound field strengthening flow is dried and measures Integrated Experimentation System with boundary region, it is characterized in that: include dry air circulating device, dried object Weight measurement device, boundary region measures device, removable sound field assembly apparatus, removable air flow method panel assembly, described dry air circulating device is made up of blower fan, described dried object Weight apparatus are made up of the precision balance being arranged on drying baker, it is connected with recording instrument without paper on described precision balance, the inlet and outlet of described blower fan is passed through inlet air circulating line respectively and is connected formation closed-loop path with drying baker with outlet circulating line, described boundary region measures device and is made up of the thermal resistance thermometer c stretching in airflow line and pitot tube.
2. a kind of sound field strengthening flow according to claim 1 be dried measure Integrated Experimentation System with boundary region it is characterised in that: butterfly valve a, butterfly valve b and butterfly valve c are respectively arranged with described inlet air circulation pipe.
3. a kind of sound field strengthening flow according to claim 1 be dried measure Integrated Experimentation System with boundary region it is characterised in that: be provided with orifice flowmeter on described outlet air circulation pipe, and be parallel with differential manometer at orifice flowmeter two ends.
4. a kind of sound field strengthening flow according to claim 1 be dried measure Integrated Experimentation System with boundary region it is characterised in that: be also equipped with electric heater in described outlet air circulation pipe.
5. a kind of sound field strengthening flow according to claim 1 be dried measure Integrated Experimentation System with boundary region it is characterised in that: removable airflow-distribution board is installed in described drying baker.
6. a kind of sound field strengthening flow according to claim 1 be dried with boundary region determination experiment Integrated Experimentation System it is characterised in that: outside described drying baker termination, audio horn is installed and can send sound wave and have influence on airflow field.
7. a kind of sound field strengthening flow according to claim 1 be dried with boundary region mensure Integrated Experimentation System it is characterised in that: be provided with shifter between described thermal resistance thermometer c and pitot tube.
8. a kind of sound field strengthening flow according to claim 1 be dried measure Integrated Experimentation System with boundary region it is characterised in that: be provided with one piece of hollow temperature-constant plate in described airflow line, and hollow temperature-constant plate be connected with external water source by cooling water pipe.
9. a kind of sound field strengthening flow according to claim 1 be dried measure Integrated Experimentation System with boundary region it is characterised in that: thermal resistance thermometer b and humidity sensor are provided with described drying baker.
10. a kind of sound field strengthening flow according to claim 1 be dried measure Integrated Experimentation System with boundary region it is characterised in that: described outlet air circulation pipe is provided with thermal resistance thermometer a and thermal resistance thermometer d at orifice flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620053403.7U CN205898096U (en) | 2016-01-20 | 2016-01-20 | Pneumatic drying and integrated experimental system of boundary layer survey are reinforceed to sound field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620053403.7U CN205898096U (en) | 2016-01-20 | 2016-01-20 | Pneumatic drying and integrated experimental system of boundary layer survey are reinforceed to sound field |
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| CN205898096U true CN205898096U (en) | 2017-01-18 |
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| CN201620053403.7U Expired - Fee Related CN205898096U (en) | 2016-01-20 | 2016-01-20 | Pneumatic drying and integrated experimental system of boundary layer survey are reinforceed to sound field |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627964A (en) * | 2016-01-20 | 2016-06-01 | 四川大学 | Sound field enhanced air flow drying and boundary layer measurement integration experiment system |
| CN109490364A (en) * | 2018-12-29 | 2019-03-19 | 河南工业大学 | A kind of peanut pod water transport variation test device |
-
2016
- 2016-01-20 CN CN201620053403.7U patent/CN205898096U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627964A (en) * | 2016-01-20 | 2016-06-01 | 四川大学 | Sound field enhanced air flow drying and boundary layer measurement integration experiment system |
| CN109490364A (en) * | 2018-12-29 | 2019-03-19 | 河南工业大学 | A kind of peanut pod water transport variation test device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20200120 |