CN2358447Y - Intelligent wind tunnel tester - Google Patents
Intelligent wind tunnel tester Download PDFInfo
- Publication number
- CN2358447Y CN2358447Y CN 99207608 CN99207608U CN2358447Y CN 2358447 Y CN2358447 Y CN 2358447Y CN 99207608 CN99207608 CN 99207608 CN 99207608 U CN99207608 U CN 99207608U CN 2358447 Y CN2358447 Y CN 2358447Y
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- CN
- China
- Prior art keywords
- wind
- tunnel
- pitot tube
- pipeline
- blower fan
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- 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 - Lifetime
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model relates to an intelligent wind tunnel tester, which is a standard device used for the testing of gas dynamics. The utility model comprises a wind tunnel pipeline (4), a standard pitot tube (5) and a fan (3). The utility model is characterized in that the fan (3) is an AC fan; the wind tunnel pipeline (4) is provided with the standard pitot tube (5); the standard pitot tube (5) and detection values of a micro differential pressure sensor (6) in a micro computer host (1) are utilized to carry out feedback; control signals are transmitted to a frequency converter (2) to drive the AC fan (3) through the automatic control of the micro computer host (1). The utility model which is used by people has the advantages that the work efficiency can be improved; the labor intensity can be lightened; the automatic control performance is strong; the operation is simple.
Description
The utility model relates to a kind of intelligent wind tunnel test device, be the standard set-up that is used for the gas dynamics test, can be widely used in detection, the correction of the relevant instrument and meter of the gas dynamical test of department, research and aerodynamic forces such as national defence, meteorology, environmental protection, health, universities and colleges of scientific research institute (institute), metallurgy, electric power, mine.
At present, domestic wind tunnel test device utilizes dc fan to be used as power, utilize the voltage with the coaxial tech-generator of dc fan to feed back, with preset setting voltage value and make comparisons, control speed governing by pure hardware circuit, after wind-tunnel starts,, draw gas flow rate and other desired parameters in the wind-tunnel pipeline through manually calculating to convert again by artificial dynamic pressure by the measurement standard pitot tube.When setting specific flow velocity testing site, need repeatedly to calculate, regulate and set the preset voltage value, could be comparatively near the setting flow velocity, when changing test point, need repeat above-mentioned artificial calculating and regulate the setting voltage step, artificial calculated amount is bigger in the test, and this type of installs inefficiency, and control performance is poor automatically, the labour intensity height is operated cumbersome.
The purpose of this utility model is, provides a kind of work efficiency higher, and stronger, the simple to operate intelligent wind tunnel test device of control performance reduces labor intensity automatically.
The main technical schemes that realizes above-mentioned purpose is, this intelligence wind tunnel test device comprises wind-tunnel pipeline (4), standard pitot tube (5), blower fan (3), it is characterized in that blower fan (3) is an AC blower fan, wind-tunnel pipeline (4) is provided with standard pitot tube (5), two valves of the end of standard pitot tube (5) link to each other with two valves of little differential pressure sensor (6) with pilot flexible pipe (10), little differential pressure sensor (6) connects the detection amplifying circuit of microcomputer host (1), the control end of the output termination frequency converter (2) of microcomputer host (1), the output termination AC blower fan (3) of frequency converter (2).
The air intake opening (9) of wind-tunnel pipeline of the present utility model (4) is a hydraucone, and resistance net (8) is equipped with in the interior cross section of air intake opening (9).
The head end of standard pitot tube of the present utility model (5) is inserted in the interior sky of wind-tunnel pipeline (4) from the test mouth (7) of wind-tunnel pipeline (4), terminal outside in wind-tunnel pipeline (4).
The utility model utilizes AC blower fan (3) to be used as power, utilize the little differential pressure sensor (6) in standard pitot tube (5) and the microcomputer host (1) to detect the dynamic pressure value, the interior gas actual flow velocity of wind-tunnel pipeline (4) that is gone out by Microcomputer Calculation feeds back, set interior the gas flow rate comparison of wind-tunnel pipeline (4) with presetting, by microcomputer host (1) control automatically, send control signal to frequency converter (2), frequency converter (2) drives AC blower fan (3) speed governing.
The utility model has the advantages that automatic control performance is stronger, simple to operate.Utilize this device to increase work efficiency degree of lightening one's labor.
Below in conjunction with description of drawings embodiment of the present utility model.
Fig. 1 is intelligent wind tunnel test apparatus structure synoptic diagram.
Fig. 2 is the sensor amplification circuit diagram.
Fig. 3 is microcomputer control circuit figure.
As shown in Figure 1, microcomputer host (1) major part is a system controlled by computer, detect amplifying circuit, Fig. 2 below, explain again among Fig. 3, frequency converter (2) is existing approved product, voltage and power selection according to AC blower fan (3), the 5000G9S type frequency converter (2) that present embodiment selects Fuji to produce, blower fan (3) is existing approved product, and is selected according to the flow velocity of device, and present embodiment selects to exchange 380V, power 4kW, the Y1124-4 type that the dynamo-electric company limited in the southeast, Taizhou city produces exchanges centrifugal blower, and wind-tunnel pipeline (4) is a prior art, and existing wind tunnel test device all has the wind-tunnel pipeline, pipeline section is a positive square or round, determine that according to the flow rates of device pipeline section is long-pending, the present embodiment gas flow rate range is the 0.5-30 meter per second, and area of section is 0.09m in the pipeline
3About, air intake opening (9) is a hydraucone, resistance net (8) is equipped with in the cross section in its pipeline section, the air hole of resistance net (8) is evenly distributed, make the interior air velocity distribution of wind-tunnel pipeline (4) even, adopt existing stainless steel cloth to make, standard pitot tube (5) is an existing product, can make measurement standard after measurement verification is qualified uses, micro-pressure sensor (6) adopts 5501 type little differential pressure sensors of U.S. SMI company, this device vertically is inserted in standard pitot tube (5) pressure head through the test mouth (7) of wind-tunnel pipeline (4) the interior sky of wind-tunnel pipeline (4), terminal outside in wind-tunnel pipeline (4), terminal two valves of standard pitot tube (5) use pilot flexible pipe (10) to be connected with two valves of the little differential pressure sensor (6) of microcomputer host (1) respectively, microcomputer host (1) calculates the interior gas flow rate of wind-tunnel pipeline (4) automatically according to the dynamic pressure value and the correlation parameter that detect, set flow speed value relatively again with in the microcomputer host (1), through microcomputer host (1) control automatically, the speed regulating control signal is sent to the control end of frequency converter (2), frequency converter (2) drives AC blower fan (3) speed governing, makes the interior gas flow rate of wind-tunnel pipeline (4) reach setting value.
As Fig. 2, shown in Figure 3, the lead-foot-line of little differential pressure sensor (6) meets connector PP3, and wherein two signal wires meet G1, G2, through operational amplifier OP-07 and CA358 processing and amplifying, amplifying signal T
0(network label) reaches the 26 pin (T of the analog to digital converter ADC0809 of microcomputer control circuit (as shown in Figure 3)
0The network label), be converted to digital signal through analog to digital converter ADC0809 and import chip microprocessor 80C31 into.Microcomputer is handled as calculated, and after the speed regulating control signal was reached gate circuit 74HC02 and handled by 14 pin of chip microprocessor 80C31, control signal T (network label) reached the control end of frequency converter (2), through the speed governing of frequency converter (2) control blower fan (3).
What deserves to be explained is, microcomputer circuit part and sensor amplifying circuit are existing mature technology, it or not inventive point of the present utility model, therefore the circuit part end is explained in detail, after inventive point of the present utility model is with micro computer standard pitot tube (5) and the signal that collects to be handled, the output control signal is given frequency converter (2), realizes the automatic speed regulation to AC blower fan (3).
Utilize device of the present utility model to increase work efficiency, degree of lightening one's labor, it is stronger to install automatic control performance, simple to operate.
Claims (3)
1. intelligent wind tunnel test device, comprise wind-tunnel pipeline (4), standard pitot tube (5), blower fan (3), it is characterized in that blower fan (3) is an AC blower fan, test mouth (7) on wind-tunnel pipeline (4) is provided with standard pitot tube (5), two valves of the end of standard pitot tube (5) link to each other with two valves of little differential pressure sensor (6) with pilot flexible pipe (10), little differential pressure sensor (6) connects the detection amplifying circuit of microcomputer host (1), the control end of the output termination frequency converter (2) of microcomputer host (1), the output termination AC blower fan (3) of frequency converter (2).
2. intelligent wind tunnel test device according to claim 1 is characterized in that the air intake opening (9) of wind-tunnel pipeline (4) is a hydraucone, and resistance net (8) is equipped with in the interior cross section of air intake opening (9).
3. according to claim 1,2 described intelligent wind tunnel test devices, the head end that it is characterized in that standard pitot tube (5) is inserted in the interior sky of wind-tunnel pipeline (4), terminal outside in wind-tunnel pipeline (4) from the test mouth (7) of wind-tunnel pipeline (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99207608 CN2358447Y (en) | 1999-03-31 | 1999-03-31 | Intelligent wind tunnel tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99207608 CN2358447Y (en) | 1999-03-31 | 1999-03-31 | Intelligent wind tunnel tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2358447Y true CN2358447Y (en) | 2000-01-12 |
Family
ID=34001544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99207608 Expired - Lifetime CN2358447Y (en) | 1999-03-31 | 1999-03-31 | Intelligent wind tunnel tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2358447Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571123A (en) * | 2014-12-08 | 2015-04-29 | 北京农业智能装备技术研究中心 | Method and system for aerial pesticide application real time dynamic wind field simulation |
| CN105954001A (en) * | 2016-06-01 | 2016-09-21 | 大连理工大学 | Wind field simulation device for oceaneering model test |
| CN109115448A (en) * | 2018-09-30 | 2019-01-01 | 天津中德应用技术大学 | A kind of TT&C system suitable for small-sized wind tunnel |
| CN109115449A (en) * | 2018-10-19 | 2019-01-01 | 天津中德应用技术大学 | A kind of intelligent Wind Speed regulator control system suitable for small-sized wind tunnel |
| CN112161775A (en) * | 2020-08-17 | 2021-01-01 | 东华大学 | Method and device for testing wind resistance performance of grid fabric |
| CN112556918A (en) * | 2021-02-22 | 2021-03-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Differential pressure sensor and pressure measuring device |
-
1999
- 1999-03-31 CN CN 99207608 patent/CN2358447Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571123A (en) * | 2014-12-08 | 2015-04-29 | 北京农业智能装备技术研究中心 | Method and system for aerial pesticide application real time dynamic wind field simulation |
| CN104571123B (en) * | 2014-12-08 | 2017-05-17 | 北京农业智能装备技术研究中心 | Method and system for aerial pesticide application real time dynamic wind field simulation |
| CN105954001A (en) * | 2016-06-01 | 2016-09-21 | 大连理工大学 | Wind field simulation device for oceaneering model test |
| CN109115448A (en) * | 2018-09-30 | 2019-01-01 | 天津中德应用技术大学 | A kind of TT&C system suitable for small-sized wind tunnel |
| CN109115449A (en) * | 2018-10-19 | 2019-01-01 | 天津中德应用技术大学 | A kind of intelligent Wind Speed regulator control system suitable for small-sized wind tunnel |
| CN112161775A (en) * | 2020-08-17 | 2021-01-01 | 东华大学 | Method and device for testing wind resistance performance of grid fabric |
| CN112556918A (en) * | 2021-02-22 | 2021-03-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Differential pressure sensor and pressure measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |