CN206223399U - Adjust the calibration wind tunnel of gas flow temperature - Google Patents
Adjust the calibration wind tunnel of gas flow temperature Download PDFInfo
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- CN206223399U CN206223399U CN201621241093.8U CN201621241093U CN206223399U CN 206223399 U CN206223399 U CN 206223399U CN 201621241093 U CN201621241093 U CN 201621241093U CN 206223399 U CN206223399 U CN 206223399U
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Abstract
The utility model is related to a kind of calibration wind tunnel for adjusting gas flow temperature.Calibration wind tunnel includes：Air inlet section, pressure-stabilizing section, bringing-up section, rectification section, stable section and contraction section；Air inlet section is used for the flow velocity for adjusting and controlling air-flow, generates fisrt feature air-flow；Pressure-stabilizing section is used to for fisrt feature air-flow to perform voltage stabilizing operation, generates second feature air-flow；Bringing-up section is used to perform heating operation to the second feature air-flow for generating, and the temperature of air-flow is controlled by adjusting heating power, generates third feature air-flow；Rectification section is used to perform rectifying operation to the third feature air-flow for generating, and generates fourth feature air-flow；Stable section is used to be operated with contraction section coordinated, and fourth feature air-flow is performed the separation and quiet run of control air-flow, generates fifth feature air-flow.The calibration wind tunnel can be realized being adjusted the gas flow temperature in calibration wind tunnel, make the gas flow temperature in its actual measuring environment of covering so that it is more accurate that hot-wire anemometer tests the speed, and with flexibility higher and ease for use.
Description
Technical field
The utility model is related to calibrate hot air wind tunnel technical field, more particularly to a kind of calibration wind tunnel for adjusting gas flow temperature.
Background technology
It is well known that being tested the speed field in flow field, it is a kind of very extensive speed-measuring method of application that hot-wire anemometer tests the speed.Hot line
The principle of method is that by an electrical heating wire for energization, i.e. hot line is placed in air-flow, and hot line is in the gas flow because heat dissipation capacity change is led
The change of the resistance of cause is relevant with flow velocity, and resistance variations can reflect the change of electric signal, finally gives flow velocity and electric signal
Corresponding relation.Hot line using preceding needing to be calibrated using calibration wind tunnel, while needing to ensure air-flow temperature in calibration wind tunnel
Degree is identical with the gas flow temperature of true measurement, if temperature is different, the error of Hot Wire Anemomtry will be caused to sharply increase, calibration wind tunnel
Temperature and actual measurement 1 DEG C of the air-flow temperature difference, big appointment causes the measurement error of hot-wire anemometer 2%.In order to avoid due to
The temperature difference causes error, it is necessary to the temperature of air-flow can be adjusted in calibration wind tunnel, it is possible to cover the gas temperature in true environment.
Current calibration wind tunnel is all the calibration wind tunnel for normal temperature in gas temperature, does not have a kind of calibration wind tunnel that can adjust temperature.
Utility model content
In consideration of it, being necessary the problem existed for conventional art, there is provided a kind of calibration wind tunnel of regulation gas flow temperature,
Can realize being adjusted the gas flow temperature in calibration wind tunnel, make the gas flow temperature in its actual measuring environment of covering so that
It is more accurate that hot-wire anemometer tests the speed, and with flexibility higher and ease for use.
To reach utility model purpose, there is provided a kind of calibration wind tunnel of regulation gas flow temperature, the calibration wind tunnel includes：Enter
Gas section, pressure-stabilizing section, bringing-up section, rectification section, stable section and contraction section；The air inlet section, for adjusting and controls the flow velocity of air-flow,
Generation fisrt feature air-flow；The pressure-stabilizing section, for the fisrt feature air-flow to be performed into voltage stabilizing operation, generates second feature gas
Stream；The bringing-up section, for performing heating operation to the second feature air-flow for generating, and by adjusting heating power control
The temperature of air-flow, generates third feature air-flow；The rectification section, for performing rectification behaviour to the third feature air-flow for generating
Make, generate fourth feature air-flow；The stable section, for being operated with the contraction section coordinated, by the fourth feature gas
Stream performs the separation and quiet run of control air-flow, generates fifth feature air-flow.
Wherein in one embodiment, the air inlet section includes：Thermal flowmeter and electropneumatic valve；Wherein, the heat
Formula flowmeter acts synergistically with the electropneumatic valve, performs mass flow and temperature that control enters the air-flow of the calibration wind tunnel
Degree.
Wherein in one embodiment, pressurizer tank is set in the pressure-stabilizing section, for the fisrt feature air-flow to be led to
Cross the pressurizer tank and perform voltage stabilizing operation, generate second feature air-flow.
Wherein in one embodiment, electric heater is set in the bringing-up section, it is special for described second to generation
Air-flow is levied, heating operation is performed to air-flow by electric heater, and the temperature of air-flow is controlled by adjusting heating power, generate institute
State third feature air-flow.
Wherein in one embodiment, in the rectification section set flow straightening grid and damping screen, the flow straightening grid with
The damping screen coordinated operation, for performing rectifying operation, generation the described 4th to the third feature air-flow for generating
Feature air-flow.
Wherein in one embodiment, also include：In the bringing-up section, the rectification section, the stable section and described
The outside of the calibration wind tunnel of contraction section sets heat-preservation cotton.
Wherein in one embodiment, also include：In the exit of the contraction section of the calibration wind tunnel, thermoelectricity is set
Even, the thermocouple is used to perform the temperature survey to the fifth feature air-flow, obtains the temperature of the fifth feature air-flow
Value.
Wherein in one embodiment, also include：Fillter section, for the air inlet section to entering the calibration wind tunnel
Air-flow performs filter operation.
A kind of calibration wind tunnel of regulation gas flow temperature that the utility model is provided.Calibration wind tunnel includes：Air inlet section, voltage stabilizing
Section, bringing-up section, rectification section, stable section and contraction section；Air inlet section is used for the flow velocity for adjusting and controlling air-flow, generates fisrt feature gas
Stream；Pressure-stabilizing section is used to for fisrt feature air-flow to perform voltage stabilizing operation, generates second feature air-flow；Bringing-up section is used for the to generation
Two feature air-flows perform heating operation, and the temperature of air-flow is controlled by adjusting heating power, generate third feature air-flow；Rectification
Section generates fourth feature air-flow for performing rectifying operation to the third feature air-flow for generating；Stable section is used to be assisted with contraction section
Same compounding practice, fourth feature air-flow is performed the separation and quiet run of control air-flow, generates fifth feature air-flow.The calibration
Wind-tunnel can be realized being adjusted the gas flow temperature in calibration wind tunnel, make the gas flow temperature in its actual measuring environment of covering,
So that hot-wire anemometer tests the speed more accurately, and with flexibility higher and ease for use.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the calibration wind tunnel of the regulation gas flow temperature in the utility model one embodiment；
Wherein, (1) fillter section (2) air inlet section (3) pressure-stabilizing section (4) bringing-up section (5) rectification section (6) stable section (7) contraction section；
1. screen pack, 2. thermal flowmeter, 3. electropneumatic valve, 4. pressurizer tank, 5. flow straightening grid, 6. electric heater, 7.
Flow straightening grid, 8. damping screen, 9. heat-preservation cotton, 10. contracting noz(zle), 11. temperature thermocouples.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example is further elaborated to the calibration wind tunnel of the utility model regulation gas flow temperature.It should be appreciated that described herein
Specific embodiment is only used to explain the utility model, is not used to limit the utility model.
As shown in figure 1, a kind of structural representation of the calibration wind tunnel of regulation gas flow temperature in for one embodiment.
Specifically, calibration wind tunnel includes：Air inlet section (2), pressure-stabilizing section (3), bringing-up section (4), rectification section (5), stable section (6)
With contraction section (7)；Air inlet section (2) is for adjusting and controls the flow velocity of air-flow, generates fisrt feature air-flow；Pressure-stabilizing section (3) is used for
Fisrt feature air-flow is performed into voltage stabilizing operation, second feature air-flow is generated；Bringing-up section (4) is for the second feature air-flow to generating
Heating operation is performed, and the temperature of air-flow is controlled by adjusting heating power, generate third feature air-flow；Rectification section (5) is used for
Third feature air-flow to generating performs rectifying operation, generates fourth feature air-flow；Stable section (6) with contraction section (7) for assisting
Same compounding practice, fourth feature air-flow is performed the separation and quiet run of control air-flow, generates fifth feature air-flow.
In the present embodiment, the air inlet section (2) of calibration wind tunnel includes：Thermal flowmeter 2 and electropneumatic valve 3；Wherein, hot type
Flowmeter 2 acts synergistically with electropneumatic valve 3, performs mass flow and temperature that control enters the air-flow of calibration wind tunnel.Enter one
Step ground, the calibration wind tunnel for adjusting gas flow temperature also includes：Fillter section (1), i.e. fillter section are used for entering calibration by screen pack 1
The air-flow of the air inlet section of wind-tunnel performs filter operation.
Further, pressurizer tank 4 is set in pressure-stabilizing section (3), for fisrt feature air-flow to be performed by pressurizer tank
Voltage stabilizing is operated, and generates second feature air-flow；Electric heater 6 is set in bringing-up section (4), for the second feature gas to generating
Stream, heating operation is performed to air-flow by electric heater 6, and the temperature of air-flow, generation the 3rd are controlled by adjusting heating power
Feature air-flow；Flow straightening grid and 7 damping screens 8 are set in rectification section (5), and flow straightening grid is operated with damping screen coordinated, is used
In rectifying operation is performed to the third feature air-flow for generating, fourth feature air-flow is generated；In contraction section (7), contracting noz(zle) 10 is set
For being operated by stable section (6) and contraction section (7) coordinated, fourth feature air-flow is performed the separation of control air-flow and put down
Steady operation, the fifth feature air-flow of generation performs injection.
In one embodiment, the calibration wind tunnel of regulation gas flow temperature also includes：In bringing-up section (4), rectification section (5), steady
The outside for determining the calibration wind tunnel of section (6) and contraction section (7) sets heat-preservation cotton 9.
Further, in one embodiment, the calibration wind tunnel of regulation gas flow temperature also includes：In the contraction of calibration wind tunnel
The exit of section sets thermocouple, i.e. temperature thermocouple 11, and temperature thermocouple 11 is used to perform the temperature to fifth feature air-flow
Measurement, obtains the temperature value of fifth feature air-flow.Wherein, according to the temperature value of fifth feature air-flow, atmospheric pressure for obtaining with
And the outlet size of contraction section, calculate the flow velocity of the air-flow in the exit of contraction section (7).Its precision up to 0.52%, and
The marked gas of different temperatures can be obtained, so as to reach offer condition of different temperatures by controlling the heating power of bringing-up section
Under standard wind speed, demarcate hot-wire anemometer purpose.
It should be noted that a kind of calibration wind tunnel of regulation gas flow temperature that the utility model is provided, with prior art phase
Than, can be adjusted with gas temperature in wind-tunnel, the demarcation of hot-wire anemometer can be adapted under hot environment and used；Using
Thermal flowmeter is controlled to flow, the high precision of this calibration wind tunnel；Its simple structure, autgmentability is strong, for high-speed and high-temperature
Condition, it is only necessary to change flowmeter and improve heating power, generalization is strong.
A kind of calibration wind tunnel of regulation gas flow temperature that the utility model is provided.Calibration wind tunnel includes：Air inlet section, voltage stabilizing
Section, bringing-up section, rectification section, stable section and contraction section；Air inlet section is used for the flow velocity for adjusting and controlling air-flow, generates fisrt feature gas
Stream；Pressure-stabilizing section is used to for fisrt feature air-flow to perform voltage stabilizing operation, generates second feature air-flow；Bringing-up section is used for the to generation
Two feature air-flows perform heating operation, and the temperature of air-flow is controlled by adjusting heating power, generate third feature air-flow；Rectification
Section generates fourth feature air-flow for performing rectifying operation to the third feature air-flow for generating；Stable section is used to be assisted with contraction section
Same compounding practice, fourth feature air-flow is performed the separation and quiet run of control air-flow, generates fifth feature air-flow.The calibration
Wind-tunnel can be realized being adjusted the gas flow temperature in calibration wind tunnel, make the gas flow temperature in its actual measuring environment of covering,
So that hot-wire anemometer tests the speed more accurately, and with flexibility higher and ease for use.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore can not be interpreted as the limitation to the utility model the scope of the claims.It should be pointed out that common for this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (8)
1. it is a kind of adjust gas flow temperature calibration wind tunnel, it is characterised in that the calibration wind tunnel includes：Air inlet section, pressure-stabilizing section, plus
Hot arc, rectification section, stable section and contraction section；
The air inlet section, for adjusting and controls the flow velocity of air-flow, generates fisrt feature air-flow；
The pressure-stabilizing section, for the fisrt feature air-flow to be performed into voltage stabilizing operation, generates second feature air-flow；
The bringing-up section, for performing heating operation to the second feature air-flow for generating, and by adjusting heating power control
The temperature of air-flow processed, generates third feature air-flow；
The rectification section, for performing rectifying operation to the third feature air-flow for generating, generates fourth feature air-flow；
The stable section, for being operated with the contraction section coordinated, control air-flow is performed by the fourth feature air-flow
Separate and quiet run, generate fifth feature air-flow.
2. it is according to claim 1 regulation gas flow temperature calibration wind tunnel, it is characterised in that the air inlet section includes：Heat
Formula flowmeter and electropneumatic valve；
Wherein, the thermal flowmeter acts synergistically with the electropneumatic valve, performs the gas that control enters the calibration wind tunnel
The mass flow and temperature of stream.
3. it is according to claim 1 regulation gas flow temperature calibration wind tunnel, it is characterised in that in the pressure-stabilizing section set
Pressurizer tank, operates for the fisrt feature air-flow to be performed into voltage stabilizing by the pressurizer tank, generates second feature air-flow.
4. it is according to claim 1 regulation gas flow temperature calibration wind tunnel, it is characterised in that in the bringing-up section set
Electric heater, for the second feature air-flow to generating, heating operation is performed to air-flow by electric heater, and by adjusting
Section heating power controls the temperature of air-flow, generates the third feature air-flow.
5. it is according to claim 1 regulation gas flow temperature calibration wind tunnel, it is characterised in that in the rectification section set
Flow straightening grid and damping screen, the flow straightening grid are operated with the damping screen coordinated, special for the described 3rd to generation
Levy air-flow and perform rectifying operation, generate the fourth feature air-flow.
6. it is according to claim 1 regulation gas flow temperature calibration wind tunnel, it is characterised in that also include：In the heating
The outside of the calibration wind tunnel of section, the rectification section, the stable section and the contraction section sets heat-preservation cotton.
7. it is according to claim 1 regulation gas flow temperature calibration wind tunnel, it is characterised in that also include：In the calibration
The exit of the contraction section of wind-tunnel sets thermocouple, and the thermocouple is used to perform the temperature to the fifth feature air-flow
Measurement, obtains the temperature value of the fifth feature air-flow.
8. it is according to claim 1 regulation gas flow temperature calibration wind tunnel, it is characterised in that also include：Fillter section, is used for
Air-flow to entering the air inlet section of the calibration wind tunnel performs filter operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621241093.8U CN206223399U (en) | 2016-11-14 | 2016-11-14 | Adjust the calibration wind tunnel of gas flow temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621241093.8U CN206223399U (en) | 2016-11-14 | 2016-11-14 | Adjust the calibration wind tunnel of gas flow temperature |
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| Publication Number | Publication Date |
|---|---|
| CN206223399U true CN206223399U (en) | 2017-06-06 |
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ID=58789857
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621241093.8U Expired - Fee Related CN206223399U (en) | 2016-11-14 | 2016-11-14 | Adjust the calibration wind tunnel of gas flow temperature |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441793A (en) * | 2016-11-14 | 2017-02-22 | 北京航空航天大学 | Adjusting method and apparatus of air-flow temperature in calibration wind tunnel |
| 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 |
-
2016
- 2016-11-14 CN CN201621241093.8U patent/CN206223399U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441793A (en) * | 2016-11-14 | 2017-02-22 | 北京航空航天大学 | Adjusting method and apparatus of air-flow temperature in calibration wind tunnel |
| CN106441793B (en) * | 2016-11-14 | 2018-02-13 | 北京航空航天大学 | The adjusting method of gas flow temperature suitable for calibration wind tunnel |
| 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 |
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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: 20170606 Termination date: 20171114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |