CN203824734U - Experiment device used for pressure measuring tube correction in wind tunnel test - Google Patents
Experiment device used for pressure measuring tube correction in wind tunnel test Download PDFInfo
- Publication number
- CN203824734U CN203824734U CN201420181572.XU CN201420181572U CN203824734U CN 203824734 U CN203824734 U CN 203824734U CN 201420181572 U CN201420181572 U CN 201420181572U CN 203824734 U CN203824734 U CN 203824734U
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- CN
- China
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- steel support
- pressure measurement
- loudspeaker
- steel bracket
- movable steel
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- Expired - Fee Related
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Provided is an experiment device used for pressure measuring tube correction in a wind tunnel test. The device comprises a base plate, a signal generator, a power amplifier, a loudspeaker, a fixed steel support, and a movable steel support. The fixed steel support is fixed on the base plate. The loudspeaker is fixedly disposed on the fixed steel support. The loudspeaker is connected with the power amplifier through a wire. The power amplifier is connected with the signal-generator through a wire. The movable steel support is arranged parallel to the fixed steel support in an opposite manner. The side of the movable steel support facing the fixed steel support is provided with a pressure measuring pore plate. The pressure measuring pore plate is provided with more than two pressure measuring points. The side of the movable steel support on the back of the fixed steel support is provided with a pressure sensor module. The pressure sensor module is connected with more than two pressure measuring points respectively through one or more long pipe system and a short pipe. The bottom of the movable steel support is provided with a pulley structure, and the movable steel support is movably disposed on the base plate through the pulley structure.
Description
Technical field
The utility model relates to a kind of experimental provision, especially relates to a kind of experimental provision for the correction of wind tunnel test pressure measurement pipeline.
Background technology
For the wind-induced vibration of research structure, must obtain the information of pulsating wind pressure in wind loads on structure.The manometric test of wind-tunnel rigid model can obtain the distributed intelligence of body structure surface wind load, is the important method that obtains Wind Loads on Buildings.The pressure measurement pipe system of rigid model generally comprises the short metal pipe of model surface and the duct elements such as pvc pipe of connection metal pipe and sensor, is the key component in rigid model manometric test.In wind tunnel test, link model surface measuring point is a principal element that affects pulsating wind pressure measuring accuracy to the caused signal distortion problem of pressure transmission pipeline of the finite length of modular pressure.In order to obtain the real pressure signal of model surface, when design piping system, need to guarantee within the scope of interested test frequency, within the scope that the amplitude after pressure signal process piping system and the change of phase place allow in experimental error.
At present, in order to ensure measuring accuracy, except guaranteeing the signals collecting speed of hardware, the one, at the pressure tap of building surface layout sufficient amount, the 2nd, to being revised by the signal distortion problem that line length pipeline causes that has of Bonding pressure module.The existing device to the correction of pressure measurement pipeline is that pressure measurement plate is installed on loudspeaker opposite, and two pressure taps are installed in pressure measurement plate centre.The existing device to the correction of pressure measurement pipeline exists loudspeaker not to be fixed on device, and without base plate, loudspeaker poor stability during experiment, and inconvenience changes the distance between loudspeaker and pressure measurement plate, the defect such as the test figure of collection is range limited.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of experimental provision for the correction of wind tunnel test pressure measurement pipeline, while adopting this experimental provision to revise experiment to wind tunnel test pressure measurement pipeline, the good operating stability of loudspeaker, distance between loudspeaker and pressure measurement plate is convenient to regulate, and the acquisition range of experimental data is wide.
The technical scheme that the utility model solves its technical matters employing is: a kind of experimental provision for the correction of wind tunnel test pressure measurement pipeline, comprise base plate, signal generator, power amplifier, loudspeaker, fixedly steel bracket, movable steel support, described fixedly steel bracket is fixed on described base plate top, and described loudspeaker is fixedly mounted on described fixedly steel bracket; Described loudspeaker is connected by wire with described power amplifier, and power amplifier is connected by wire with signal generator; Described movable steel support is parallel staggered relatively with described fixedly steel bracket, and movable steel stent cover is provided with pressure measurement orifice plate to fixing steel bracket one side, and described pressure measurement orifice plate is provided with two above pressure taps; Described movable steel support dorsad fixedly steel bracket one side be provided with pressure sensor module, described pressure sensor module is connected by pipe system and a short tube of one or more length respectively with described two above pressure taps; The bottom of described movable steel support is provided with pulley structure, and movable steel support is placed on described base plate movably by pulley structure.
Further, described fixedly steel bracket is provided with the mounting hole that shape and described loudspeaker adapt, and described loudspeaker is fixedly mounted in described mounting hole; Described pressure measurement orifice plate is a square plate, and described two above pressure taps are all located at the center of described pressure measurement orifice plate; The center of described pressure tap and described loudspeaker is on same level straight line.
Further, described fixedly steel bracket is combined by a top board, two side panels and a front plate welding, and described mounting hole is opened in described front plate; Described movable steel support is combined by a top board, two side panels and a front plate welding, and described pressure measurement orifice plate is fixedly mounted in described front plate, and described pulley structure is located at described two side panels bottom; The front plate of described movable steel support is parallel staggered relatively with the front plate of described fixedly steel bracket.
Further, described signal generator, power amplifier are all fixedly mounted on described base plate top.
Good effect of the present utility model is, while adopting experimental provision of the present utility model to revise experiment to wind tunnel test pressure measurement pipeline, and the good operating stability of loudspeaker, the distance between loudspeaker and pressure measurement plate is convenient to adjusting, and the acquisition range of experimental data is wide.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the structural representation of the front plate of fixedly steel bracket embodiment illustrated in fig. 1.
Fig. 3 is the structural representation of the front plate of movable steel support embodiment illustrated in fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, embodiment of the present utility model comprises base plate 1, signal generator 2, power amplifier 3, loudspeaker 4, fixedly steel bracket I, movable steel bracket I I.Fixedly steel bracket I is fixed on the top of base plate 1, and fixedly steel bracket I is combined by a top board 5, two side panels 7 and front plate 6 welding.Front plate 6 is provided with the mounting hole that shape and loudspeaker 4 adapt, and loudspeaker 4 is fixedly mounted in mounting hole by bolt 16.Movable steel bracket I I is combined by a top board 12, two side panels 9 and front plate 11 welding.The front plate 11 of movable steel bracket I I is parallel staggered relatively with the front plate 6 of fixing steel bracket I.The front plate 11 of movable steel bracket I I is provided with pressure measurement orifice plate 10, and pressure measurement orifice plate 10 is positioned at front plate 11 towards fixing steel bracket I mono-side.Pressure measurement orifice plate 10 is a square plate, by bolt 18, is fixed in front plate 11.Pressure measurement orifice plate 10 is provided with the center position that 17, two pressure taps 17 of two pressure taps are located at pressure measurement orifice plate 10, and the center of pressure tap 17 and loudspeaker 4 is on same level straight line.Movable steel bracket I I dorsad fixedly steel bracket I mono-side be provided with pressure sensor module 15, pressure sensor module 15 and two pressure taps 17 are connected with a short tube 13 by a long pipe system 14 respectively.The bottom of two side panels 9 is provided with pulley structure 8, and movable steel bracket I I is placed on base plate 1 movably by pulley structure 8.Loudspeaker 4 is connected by wire with power amplifier 3, and power amplifier 3 is connected by wire with signal generator 2, and signal generator 2, power amplifier 3 are all fixedly mounted on base plate 1 top.
Principle of work
During test, cut off the unnecessary connecting line that enters pressure sensor module 15, make the connecting length of short tube 13 short as far as possible, so that pipeline has flat frequency response characteristic in low-frequency range, can think that it is exactly the pressure signal on testee surface that measured signal does not have distortion in low-frequency range.Simultaneously, due to two pressure taps from very close to, can think that pipe system 14 is the same with the pressure of short tube 13, the signal of measuring with short tube 13 is like this as the input signal of tested pipe system, two signal cut-in pressure sensor assemblies 15, carry out accurate pressure calibration and data acquisition with electronics pressure scanning valve system.
Signal generator 2 produces sine wave and drives loudspeakers 4 to send sinusoid pressure wave by power amplifier 3, and pressure measurement orifice plate 10 is carried out to pressure wave exciting, utilizes electric pressure scaner system to carry out pressure calibration and data acquisition.Adopt acoustical vibration principle, utilize sinusoid pressure wave as external drive, by multi-point joint scanning technique, the Frequency Response of different pipelines is carried out to quantitative test.
Claims (4)
1. the experimental provision for the correction of wind tunnel test pressure measurement pipeline, it is characterized in that, comprise base plate, signal generator, power amplifier, loudspeaker, fixedly steel bracket, movable steel support, described fixedly steel bracket is fixed on described base plate top, and described loudspeaker is fixedly mounted on described fixedly steel bracket; Described loudspeaker is connected by wire with described power amplifier, and power amplifier is connected by wire with signal generator; Described movable steel support is parallel staggered relatively with described fixedly steel bracket, and movable steel stent cover is provided with pressure measurement orifice plate to fixing steel bracket one side, and described pressure measurement orifice plate is provided with two above pressure taps; Described movable steel support dorsad fixedly steel bracket one side be provided with pressure sensor module, described pressure sensor module is connected by pipe system and a short tube of one or more length respectively with described two above pressure taps; The bottom of described movable steel support is provided with pulley structure, and movable steel support is placed on described base plate movably by pulley structure.
2. the experimental provision for the correction of wind tunnel test pressure measurement pipeline according to claim 1, is characterized in that, described fixedly steel bracket is provided with the mounting hole that shape and described loudspeaker adapt, and described loudspeaker is fixedly mounted in described mounting hole; Described pressure measurement orifice plate is a square plate, and described two above pressure taps are all located at the center of described pressure measurement orifice plate; The center of described pressure tap and described loudspeaker is on same level straight line.
3. the experimental provision for the correction of wind tunnel test pressure measurement pipeline according to claim 2, is characterized in that, described fixedly steel bracket is combined by a top board, two side panels and a front plate welding, and described mounting hole is opened in described front plate; Described movable steel support is combined by a top board, two side panels and a front plate welding, and described pressure measurement orifice plate is fixedly mounted in described front plate, and described pulley structure is located at described two side panels bottom; The front plate of described movable steel support is parallel staggered relatively with the front plate of described fixedly steel bracket.
4. according to the experimental provision for the correction of wind tunnel test pressure measurement pipeline described in claim 1 or 2 or 3, it is characterized in that, described signal generator, power amplifier are all fixedly mounted on described base plate top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181572.XU CN203824734U (en) | 2014-04-15 | 2014-04-15 | Experiment device used for pressure measuring tube correction in wind tunnel test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181572.XU CN203824734U (en) | 2014-04-15 | 2014-04-15 | Experiment device used for pressure measuring tube correction in wind tunnel test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203824734U true CN203824734U (en) | 2014-09-10 |
Family
ID=51480217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181572.XU Expired - Fee Related CN203824734U (en) | 2014-04-15 | 2014-04-15 | Experiment device used for pressure measuring tube correction in wind tunnel test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203824734U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628334A (en) * | 2016-03-25 | 2016-06-01 | 中南大学 | Aeroelastic model-based synchronous pressure measurement and vibration measurement system and realization method |
| CN109900451A (en) * | 2019-03-13 | 2019-06-18 | 广州大学 | The method for correcting the distortion of wind tunnel experiment pressure measuring model wind pressure signal |
| CN112197935A (en) * | 2020-10-19 | 2021-01-08 | 重庆大学 | Method for acquiring frequency response value at any frequency under any pipe length, pressure measuring pipeline correcting method and storage medium |
| CN113865787A (en) * | 2021-09-10 | 2021-12-31 | 华南理工大学 | Time domain calibration method for pressure measurement pipeline signal |
-
2014
- 2014-04-15 CN CN201420181572.XU patent/CN203824734U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628334A (en) * | 2016-03-25 | 2016-06-01 | 中南大学 | Aeroelastic model-based synchronous pressure measurement and vibration measurement system and realization method |
| CN109900451A (en) * | 2019-03-13 | 2019-06-18 | 广州大学 | The method for correcting the distortion of wind tunnel experiment pressure measuring model wind pressure signal |
| CN109900451B (en) * | 2019-03-13 | 2020-12-01 | 广州大学 | Method for correcting wind pressure signal distortion of wind tunnel experiment pressure measurement model |
| CN112197935A (en) * | 2020-10-19 | 2021-01-08 | 重庆大学 | Method for acquiring frequency response value at any frequency under any pipe length, pressure measuring pipeline correcting method and storage medium |
| CN113865787A (en) * | 2021-09-10 | 2021-12-31 | 华南理工大学 | Time domain calibration method for pressure measurement pipeline signal |
| CN113865787B (en) * | 2021-09-10 | 2023-06-20 | 华南理工大学 | Time domain calibration method for pressure measurement pipeline signals |
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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: 20140910 Termination date: 20210415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |