CN206505098U - Starting wind velocity calibrating installation - Google Patents
Starting wind velocity calibrating installation Download PDFInfo
- Publication number
- CN206505098U CN206505098U CN201720353159.0U CN201720353159U CN206505098U CN 206505098 U CN206505098 U CN 206505098U CN 201720353159 U CN201720353159 U CN 201720353159U CN 206505098 U CN206505098 U CN 206505098U
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Abstract
The utility model discloses a kind of starting wind velocity calibrating installation, including wind-tunnel, and the wind-tunnel includes being provided with honeycomb and screens in stable section, test section and power section, stable section successively along airflow direction, and the inwall at the edge and wind-tunnel of honeycomb and screens fits；Provided with standard and by school air velocity transducer in test section, standard is used and power fan, standard and the input that microcontroller is connected to by school air velocity transducer is provided with hot-wire array instrument, power section, and microcontroller is connected with power fan control.The utility model improves the accuracy of low wind speed section starting wind velocity calibration result, and wind field flow control is uniform and stable.
Description
Technical field
The utility model is related to a kind of starting wind velocity calibrating installation, belongs to meteorological phenomena measurement industry air velocity transducer starting wind velocity
Collimation technique field.
Background technology
Starting wind velocity refers to that anemometer starts and can maintained the minimum windspeed rotated, is to judge that the performance of air velocity transducer is excellent
A bad important indicator.Currently, the underproof main cause of air velocity transducer is that starting wind velocity becomes big.
At present, more reliable starting wind velocity metering method is the low-speed wind tunnel alignment in laboratory（Calibrating）, wind-tunnel
Including two kinds of forthright formula and loop-type, power section, stable section, contraction section, experimental section etc. are mainly included in structure, Pitot tube is used
And differential pressure gauge is used as wind speed standard.The subject matter for examining and determine wind speed using wind-tunnel is：According to measuring principle, Pitot tube and
Differential pressure gauge is good to more than 2m/s measuring wind speed accuracy as standard, but below 2m/s measuring wind speed result is forbidden
Really, and wind-tunnel facilities are with high costs.
Another starting wind velocity calibrating mode be in an open-topped semi-enclosed cylindrical cavity body, it is straight during calibration
Flow fan blows into air-flow, through the skewed slot on guide sleeve, and rotate counterclockwise air-flow is produced inside circular cylindrical cavity, wind is driven with this
Cup is rotated, but its air flow direction is always vertical with vane section, the form and actual airflow of this wind act on vane by
Power mode differs larger；Fanning mill anemometer is placed at its air outlet, starting wind is used as using the velocity of rotation of impeller anemometer
Speed whether qualified criterion, can only judge whether starting wind velocity qualified according to this standard, be qualitatively judge and non-quantitation
Index；Meanwhile, it can only calibrate vane rotation direction for air velocity transducer counterclockwise.
The content of the invention
For the defect of prior art, the utility model provides a kind of starting wind velocity calibrating installation, improves low wind speed section and rises
The accuracy of dynamic wind speed calibration result, wind field flow control is uniform and stable.
In order to solve the technical problem, the technical solution adopted in the utility model is：Including wind-tunnel, the wind-tunnel is along gas
Flowing direction includes being provided with honeycomb and screens, honeycomb and screens in stable section, test section and power section, stable section successively
Edge and the inwall of wind-tunnel fit；Provided with standard and by school air velocity transducer in test section, standard uses hot-wire
Power fan, standard and the input that microcontroller is connected to by school air velocity transducer, micro-control are provided with anemobiagraph, power section
Device processed is connected with power fan control.
Starting wind velocity calibrating installation described in the utility model, the wind-tunnel is the rectangular parallelepiped structure of both ends open, test section
Positioned at the centre of wind-tunnel, stable section and power section are respectively positioned at the two ends of wind-tunnel.
Starting wind velocity calibrating installation described in the utility model, the length of test section is the hydraulic diameter of wind-tunnel cross section, surely
The length for determining section is 1-1.5 times of wind-tunnel cross section side length.
Starting wind velocity calibrating installation described in the utility model, honeycomb is made up of side by side multiple prismatic small pipelines, small
The diameter parallel of pipeline is in wind-tunnel axis.
Starting wind velocity calibrating installation described in the utility model, the bore of honeycomb and the ratio of length are 5-10.
Starting wind velocity calibrating installation described in the utility model, screens is made up of multilayer gauze.
Starting wind velocity calibrating installation described in the utility model, described is vane airspeedometer, air-flow side by school air velocity transducer
It is parallel to plane where the vane with vane airspeedometer.
The beneficial effects of the utility model：The utility model selects hot-wire array instrument as standard, compared with Pitot tube and
Differential pressure gauge improves the accuracy of low wind speed section measurement；Evaded use vane type anemobiagraph as standard operationally from
Body produces vortex to influence the shortcoming of sensor starting wind velocity；Standard can trace to the source, and realize transmission of quantity value；Hot-wire anemometer is made
While for wind speed standard, the measurement of the environmental informations such as temperature, relative humidity and air pressure is also provided.The utility model can
It is automatic to read standard and adjust the ascending uniform change of wind field wind speed by the data of school air velocity transducer and according to the data
Change, realize the auto-calibration of starting wind velocity.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1st, wind-tunnel, 2, power fan, 3, by school air velocity transducer, 4, standard, 5, rectifier, 6, honeycomb, 7,
Airflow direction indicia arrow.
Embodiment
The utility model is described further with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of starting wind velocity calibrating installation, including wind-tunnel 1, the wind-tunnel 1 is the cuboid of both ends open
Structure, wind-tunnel 1 includes stable section, test section and power section successively along airflow direction, and test section is located at the centre of wind-tunnel, stable section
It is located at the two ends of wind-tunnel respectively with power section.In accompanying drawing 1, airflow direction airflow direction indicia arrow 7 is identified.
Test section is the part of progress simulated experiment in wind-tunnel, is the center of whole wind-tunnel.In the present embodiment, test section
Cross section is not circular, and the length of test section takes the hydraulic diameter in section（4 times of area/perimeters）.Standard 4 is provided with test section
With by school air velocity transducer 3, standard 4 uses hot-wire array instrument, and vane airspeedometer is used by school air velocity transducer 3, and
Airflow direction is parallel with plane where the vane of vane airspeedometer.The power fan for being used for driving air flow is provided with power section
2, standard 4 and it is connected by school air velocity transducer 3 with the input of microcontroller, for being sensed by standard 4 and by school discipline speed
The air speed value of device 3 is transmitted to microcontroller, while microcontroller is connected with the control of power fan 2, for controlling power fan 2
Rotating speed.
Stable section is to be mounted with honeycomb 6 and rectification inside the equal diameter pipeline for making air-flow keep uniform and stable, stable section
Device 5.The length of stable section first has to guarantee to install honeycomb 6 and screens 5, secondly also to have a segment length, pass through air-flow
Cross the small whirlpool for the remaining that gradually settles out and decay after honeycomb 6 and screens 5.In the present embodiment, the wind-tunnel is straight to wait
Footpath pipeline, shrinkage ratio is 1, and the length of stable section is 1-1.5 times of wind-tunnel cross section side length.
In the present embodiment, the honeycomb 6 air-flow is served lead it is straight, honeycomb 6 it is general by many square, circular or
The hexagonal uiform section small pipeline of person is constituted side by side, and the diameter parallel of pipeline is in the axis of wind-tunnel 1, the large scale whirlpool in air-flow
Small whirlpool is divided into, is conducive to accelerating the decay of whirlpool.The size of honeycomb 6 represents that length L is bigger, whole with bore M and length L
Flow effect better, but lose also bigger, M values are smaller, the effect of 6 pairs of reduction turbulence levels of honeycomb is more obvious.General parameter model
Enclose for：L/M=5-10.
In the present embodiment, screens 5 is made up of multilayer gauze, turbulence level and unevenness for reducing air-flow, gauze
The number of plies it is more, mesh is thinner, and effect is more obvious.
During starting wind velocity calibrating installation described in the utility model work, the low rate start of power fan 2, now power fan 2
Rotating speed is small, produces wind field air-flow velocity less than normal, it is impossible to which drive is rotated by school air velocity transducer 3, by one section of stabilization time, micro-control
Device processed can not still be detected then controls the wind speed of power fan 2 to accelerate by the output signal of school air velocity transducer 3, until by school discipline speed
Sensor 3 is rotated, and now keeps the rotating speed of power fan 2, and microcontroller, which is gathered, to be exported and marked by the pulse of school air velocity transducer 3
The signal output of quasi- device 4, is recorded by the data of school air velocity transducer 3 and standard 4, test terminates.
Described above is only general principle of the present utility model and preferred embodiment, and those skilled in the art are according to this reality
With the new improvement and replacement made, belong to protection domain of the present utility model.
Claims (7)
1. a kind of starting wind velocity calibrating installation, it is characterised in that：Including wind-tunnel, the wind-tunnel includes stable successively along airflow direction
Honeycomb and screens, the inwall at the edge and wind-tunnel of honeycomb and screens are provided with section, test section and power section, stable section
Fit；Provided with standard and by school air velocity transducer in test section, standard is used to be provided with hot-wire array instrument, power section
Power fan, standard and is connected to microcontroller input by school air velocity transducer, and microcontroller controls to connect with power fan
Connect.
2. starting wind velocity calibrating installation according to claim 1, it is characterised in that：The wind-tunnel is the rectangular of both ends open
Body structure, test section is located at the centre of wind-tunnel, and stable section and power section are located at the two ends of wind-tunnel respectively.
3. starting wind velocity calibrating installation according to claim 2, it is characterised in that：The length of test section is wind-tunnel cross section
Hydraulic diameter, the length of stable section is 1-1.5 times of wind-tunnel cross section side length.
4. starting wind velocity calibrating installation according to claim 1, it is characterised in that：Honeycomb is by multiple prismatic tubules
Road is constituted side by side, and the diameter parallel of small pipeline is in wind-tunnel axis.
5. starting wind velocity calibrating installation according to claim 4, it is characterised in that：The bore of honeycomb and the ratio of length
For 5-10.
6. the starting wind velocity calibrating installation according to claim 1 or 4, it is characterised in that：Screens is made up of multilayer gauze.
7. starting wind velocity calibrating installation according to claim 1, it is characterised in that：Described is vane by school air velocity transducer
Airspeedometer, airflow direction is parallel with plane where the vane of vane airspeedometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720353159.0U CN206505098U (en) | 2017-04-06 | 2017-04-06 | Starting wind velocity calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720353159.0U CN206505098U (en) | 2017-04-06 | 2017-04-06 | Starting wind velocity calibrating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206505098U true CN206505098U (en) | 2017-09-19 |
Family
ID=59832906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720353159.0U Expired - Fee Related CN206505098U (en) | 2017-04-06 | 2017-04-06 | Starting wind velocity calibrating installation |
Country Status (1)
| Country | Link |
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| CN (1) | CN206505098U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827590A (en) * | 2018-08-29 | 2018-11-16 | 中国环境科学研究院 | A kind of wind speed based on two-sided cavity, pressure, temperature calibration system |
| RU186769U1 (en) * | 2018-10-09 | 2019-01-31 | Общество с ограниченной ответственностью "Полимерные Композиционные Материалы - Алтай" | Device for straightening and measuring the flow rate in the ventilation system |
| CN109633208A (en) * | 2019-01-22 | 2019-04-16 | 四川省气象探测数据中心 | Air velocity transducer quality determining method and device |
| CN110095636A (en) * | 2019-05-27 | 2019-08-06 | 山东省气象局大气探测技术保障中心 | A kind of meteorological circuit wind tunnel system |
| CN110389011A (en) * | 2018-04-19 | 2019-10-29 | 上汽通用汽车有限公司 | Impeller calibration system and the method that impeller is demarcated |
| CN110530597A (en) * | 2019-08-13 | 2019-12-03 | 北京卫星环境工程研究所 | Wind speed calibration system under a kind of low pressure |
| CN113155400A (en) * | 2021-04-25 | 2021-07-23 | 华南理工大学 | Low-speed wind tunnel device |
-
2017
- 2017-04-06 CN CN201720353159.0U patent/CN206505098U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389011A (en) * | 2018-04-19 | 2019-10-29 | 上汽通用汽车有限公司 | Impeller calibration system and the method that impeller is demarcated |
| CN108827590A (en) * | 2018-08-29 | 2018-11-16 | 中国环境科学研究院 | A kind of wind speed based on two-sided cavity, pressure, temperature calibration system |
| RU186769U1 (en) * | 2018-10-09 | 2019-01-31 | Общество с ограниченной ответственностью "Полимерные Композиционные Материалы - Алтай" | Device for straightening and measuring the flow rate in the ventilation system |
| CN109633208A (en) * | 2019-01-22 | 2019-04-16 | 四川省气象探测数据中心 | Air velocity transducer quality determining method and device |
| CN109633208B (en) * | 2019-01-22 | 2021-05-04 | 四川省气象探测数据中心 | Quality detection method and device for wind speed sensor |
| CN110095636A (en) * | 2019-05-27 | 2019-08-06 | 山东省气象局大气探测技术保障中心 | A kind of meteorological circuit wind tunnel system |
| CN110530597A (en) * | 2019-08-13 | 2019-12-03 | 北京卫星环境工程研究所 | Wind speed calibration system under a kind of low pressure |
| CN110530597B (en) * | 2019-08-13 | 2021-03-02 | 北京卫星环境工程研究所 | Wind speed calibration system under low pressure |
| CN113155400A (en) * | 2021-04-25 | 2021-07-23 | 华南理工大学 | Low-speed wind tunnel device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170919 |
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| CF01 | Termination of patent right due to non-payment of annual fee |