CN207937141U - The synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel - Google Patents
The synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel Download PDFInfo
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- CN207937141U CN207937141U CN201820418323.6U CN201820418323U CN207937141U CN 207937141 U CN207937141 U CN 207937141U CN 201820418323 U CN201820418323 U CN 201820418323U CN 207937141 U CN207937141 U CN 207937141U
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Abstract
The utility model provides a kind of synchronous measuring apparatus of wind speed profile in wind-tunnel, it includes surveying wind devices（2）, it is characterised in that：Sensor（3）Pass through holder（4）And pedestal（5）It is fixed on wind-tunnel section（1）It is interior, survey wind devices（2）Pass through optical patchcord（6）With sensor（3）Connection；The sensor（3）Using distribution type fiber-optic as sensor information, the distribution type fiber-optic is metal armouring light unit or twisted wire optical cable；It solves and needs repeatedly to replace detector position existing for measurement of the prior art to wind-tunnel inner section wind speed profile, it operates relatively complicated, and measured result everywhere does not have synchronism, the change of detector position also influences whether that wind field is stablized, and feasibility is poor；The prior art can synchronize the technical problems such as measurement to the cross-sectional distribution shortage of wind turbine apparatus wind speed.
Description
Technical field
The utility model belongs to a kind of synchronization of wind speed profile in wind speed profile measuring technique in wind-tunnel more particularly to wind-tunnel
Measuring device and measuring method.
Background technology
Wind-tunnel is the tubular air Dynamic Test Chamber of artificially generated controlled airflow, as the important tool of engineering test, mesh
Be to generate the similar particular airflow of or certain parameters identical as actual environment.The main control parameters of Flow Field in Wind Tunnel have wind speed big
Small, turbulivity etc., for the wind-tunnel of simulation of atmospheric boundary layer wind speed profile, the spatial distribution of wind speed and the spatial point thus calculated
Between cross-spectrum, correlation etc. be also important index.
Measuring wind speed common approach in wind-tunnel is the point type air hose based on various principles, such as pitot pressure air hose, hot line
The isometric smaller of air hose is applicable in wind-tunnel, and turbulivity, correlation etc. can convert from the continuous result of spot measurement
It arrives.To the cross-sectional distribution of wind speed, both it can be used point type air hose to space lattice（CN 102706532 B）Point-to-point measurement is carried out,
Row's formula air hose can be used（CN 203455362 U）It is measured while realizing a column space point wind speed, moving guide rail is used in combination then
The wind speed profile in wind-tunnel can theoretically be obtained（CN 203772516 U）.However either point type still arranges formula detection, is cutting
It needs repeatedly to replace detector position in the measurement process of face wind speed profile, operation is relatively complicated, and measured result everywhere is not
Has synchronism, the change of detector position also influences whether that wind field is stablized.If directly using point sensor array structure
Face formula detection, then the volume of sensor itself and its attachment will substantially change tunnel airstream and cause to measure in vain, and also need to locate
It manages the synchronism of batch data and the response consistent degree of calibration sensor, feasibility is poor.On the whole, wind turbine apparatus wind speed
Cross-sectional distribution lack to synchronize and measure and smaller method is influenced on former wind field.
Utility model content
The technical problems to be solved in the utility model is：The synchronous measuring apparatus that wind speed profile in a kind of wind-tunnel is provided, with
It solves to need repeatedly to replace detector position existing for measurement of the prior art to wind-tunnel inner section wind speed profile, operation is more numerous
Trivial, and measured result everywhere does not have a synchronism, the change of detector position also influences whether that wind field is stablized, feasibility compared with
Difference；The prior art can synchronize the technical problems such as measurement to the cross-sectional distribution shortage of wind turbine apparatus wind speed.
The technical solution of the utility model is：
The synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel, it includes surveying wind devices, and sensor passes through holder and pedestal
It is fixed in wind-tunnel section, surveys wind devices and connect with sensor by optical patchcord；The sensor is made using distribution type fiber-optic
For sensor information, the distribution type fiber-optic is metal armouring light unit or twisted wire optical cable.
The sensor is metal armouring light unit or twisted wire optical cable with the equidistantly parallel reciprocal arrangement form of zigzag
Square planar configuration sensor, line space are the spatial resolution needed for wind tunnel speed distribution measuring, and minimum line space is more than light
20 times of element diameter.
The sensor is two sets of fixed square net structures formed of square planar configuration sensor vertical intersection.
Holder is used to support fixed sensor, and holder is quadrilateral frame structure of steel product, holder and sensor plane it is outer
It encloses and is fixed, holder upper and lower side is respectively adopted pedestal and is fixed with wind-tunnel side wall, and pedestal is angle steel.
The measurement method of the synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel, including：
Step 1, device installation：Sensor is fixed on by holder and pedestal in wind-tunnel section, wind devices is surveyed and passes through light
Fine wire jumper is connect with sensor；
Step 2, coordinate setting：Start and survey wind devices, determines the corresponding wind-tunnel inner section space coordinate of each section of sensor, it is defeated
Go out the one-to-one relationship list of the position (x, y) to be measured from optical path distance L to space；
Step 3, measuring wind speed：The wind speed v (l, t) of each point on simultaneously output optical fibre is measured by surveying wind devices, distance l is
Fiber distance of this from equipment end in the light unit determined using optical time domain reflection technology, t is time of measuring；
Step 4, distribution conversion：The wind speed v (l, t) of each point is fixed by coordinate on the optical fiber that each moment is measured respectively
Position correspondence obtains the wind-tunnel space wind speed profile v (x, y, t) at each moment after replacing.
Two parts sensor air speed data, rejecting abnormalities point later will be positioned at the same space coordinates in length and breadth for step 5, comparison
Data are averaged.
The utility model advantageous effect：
The utility model constructs suitable sensor using optical fiber cable, uses distribution type fiber-optic wind measuring system, sensor
It is positioned over the spatial distribution measurement that wind speed is carried out in wind-tunnel.It can get accurately instantaneous section wind speed profile；Pass through sensor network
Lattice combination Distributed probing can disposably obtain the synchronization wind speed information of tunnel airstream section each point, and measurement process is simply fast
Speed can measure the data at multiple moment to provide reliable statistical result.Grade diameter due to light unit and uniformly distributed shape
Shape, sensing grid have minimum wind area and more uniform to wind-tunnel wind disturbance, make its own influence to wind speed most
Smallization simultaneously measures accurate wind speed；It solves and is needed existing for measurement of the prior art to wind-tunnel inner section wind speed profile repeatedly
Detector position is replaced, operation is relatively complicated, and measured result everywhere does not have synchronism, and the change of detector position also can
Wind field stabilization is influenced, feasibility is poor；The prior art can synchronize measurement to the cross-sectional distribution shortage of wind turbine apparatus wind speed
Etc. technical problems.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model measurement method flow diagram.
Specific implementation mode
The synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel, it includes surveying wind devices 2, sensor（3）Pass through 4 He of holder
Pedestal 5 is fixed in wind-tunnel section 1, is surveyed wind devices 2 and is connect with sensor 3 by optical patchcord 6.
Sensor 3 therein uses distribution type fiber-optic as sensor information, and metal armouring light unit specifically can be used.It obtains
The light unit of sufficient length, the optical fiber curvature allowed with signal transmission are carried out mechanical buckling in end, make light unit by equidistant
Parallel reciprocal arrangement form square planar in a zigzag, size are arranged according to wind-tunnel size, and line space suggestion is distributed for wind tunnel speed
Spatial resolution needed for measuring, minimum spacing suggestion are more than 20 times of light unit diameter, are caused to avoid to tunnel airstream
It significantly affects.The sensor measurement measuring surface width of formation is arranged with height according to the size of target wind-tunnel.For high-speed wind tunnel
The then higher twisted wire optical cable of preferred intensity.
A kind of improved sensor structure is to continue light of vertically arranging after the light unit arranged in parallel to form above structure
Unit, spacing control and two groups of light units arranged in parallel identical, that formation trend intersects vertically, are shown in 3 grid of sensor in Fig. 1
Structure；Each crosspoint of vertical and horizontal two rows of light units is fixed to each other, realizes higher mechanical strength, and can be surveyed in both direction
The data of amount are compareed to reject optical fiber abnormal point；Sensor 3 uses network, can increase the ventilative property of device, reduces windage；
So that device is not fallen or be damaged by wind in measurement process, improves the service life of device.
Holder 4 is used to support fixed sensor 3, and holder 4 is quadrilateral frame structure of steel product, holder 4 and 3 plane of sensor
Periphery be fixed, 4 upper and lower side of holder is respectively adopted pedestal 5 and is fixed with wind-tunnel side wall, pedestal 5 be angle steel.
The solid reinforcing bar of sufficient intensity, holder shape can be used to be arranged according to the shape of sensor plane for holder 4（Such as Fig. 1
For quadrangle）, suitable stress point soldered sensor is selected to be allowed to fixed with holder.The pedestal 5 and wind-tunnel that holder passes through upper and lower
It is connected and fixed, pedestal is chosen as angle steel, is connect by metal buckle with holder, then pedestal is fixed on wind-tunnel or more by screw
Wall makes down wind arrangement in angle steel face to reduce windage.
It surveys wind devices 2 to be arranged in outside wind-tunnel, using distribution type fiber-optic wind measuring system（With reference to 106199056 A of CN）, light
The fiber outlet that road interface penetrates wind-tunnel and sensor 3 by optical patchcord 6 is attached.Wind devices external power supply is surveyed to use,
The wind speed of output optical fibre each position.
One set-up procedure is to determine the corresponding wind-tunnel inner section space coordinate of each section of sensor light unit, and method is to pass through
Artificial perturbation is individually carried out to each outer rim endpoint of light unit, it is true from the vibration signal peak position of distribution type fiber-optic wind measuring system
Fixed corresponding fiber distance l, and record coordinate of each endpoint in wind-tunnel.It is positioned according to the group, phase is determined according to linear interpolation
The corresponding fiber distance l of tested point each position (x, y) on light unit straight line between adjacent two-end-point.The feasible foundation of this method is,
It is to obtain wind speed by measuring the wind-induced vibration of optical fiber in this position to survey wind devices, is had to artificial perturbation same sensitive
Property, can orient disturbance location on distribution curve of the signal along optical fiber, and by linear distribution of the optical fiber in light unit come into
Row extrapolation.
The measurement method of the synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel, including：
Step 1, device installation：Sensor 3 is fixed on by holder 4 and pedestal 5 in wind-tunnel section 1, it is logical to survey wind devices 2
Optical patchcord 6 is crossed to connect with sensor 3；
Step 2, coordinate setting：Start and survey wind devices 2, determines the corresponding wind-tunnel inner section space coordinate of 3 each sections of sensor,
Export the one-to-one relationship list of the position (x, y) to be measured from optical path distance L to space；
Step 3, measuring wind speed：The wind speed v (l, t) of each point on simultaneously output optical fibre is measured by surveying wind devices 2, distance l is
Fiber distance of this from equipment end in the light unit determined using optical time domain reflection technology, t is time of measuring；
Step 4, distribution conversion：The wind speed v (l, t) of each point is fixed by coordinate on the optical fiber that each moment is measured respectively
Position correspondence obtains the wind-tunnel space wind speed profile v (x, y, t) at each moment after replacing.
It further includes：Two parts sensor air speed data, rejecting abnormalities point will be located at same later in length and breadth for step 5, comparison
The data of space coordinate are averaged.
Claims (4)
1. the synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel, it includes surveying wind devices（2）, it is characterised in that：Sensor（3）
Pass through holder（4）And pedestal（5）It is fixed on wind-tunnel section（1）It is interior, survey wind devices（2）Pass through optical patchcord（6）With sensor（3）
Connection；The sensor（3）Using distribution type fiber-optic as sensor information, the distribution type fiber-optic be metal armouring light unit or
Twisted wire optical cable.
2. the synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel according to claim 1, it is characterised in that：The sensing
Device（3）It is that metal armouring light unit or twisted wire optical cable are passed with the square planar configuration of the equidistantly parallel reciprocal arrangement form of zigzag
Sensor, line space are the spatial resolution needed for wind tunnel speed distribution measuring, and minimum line space is more than 20 times of light unit diameter.
3. the synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel according to claim 2, it is characterised in that：The sensing
Device（3）For two sets of fixed square net structures formed of square planar configuration sensor vertical intersection.
4. the synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel according to claim 2 or 3, it is characterised in that：Holder
（4）It is used to support fixed sensor（3）, holder（4）For quadrilateral frame structure of steel product, holder（4）With sensor（3）Plane
Periphery is fixed, holder（4）Pedestal is respectively adopted in upper and lower side（5）It is fixed with wind-tunnel side wall, pedestal（5）For angle steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820418323.6U CN207937141U (en) | 2018-03-27 | 2018-03-27 | The synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel |
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|---|---|---|---|
| CN201820418323.6U CN207937141U (en) | 2018-03-27 | 2018-03-27 | The synchronous measuring apparatus of wind speed profile in a kind of wind-tunnel |
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| CN207937141U true CN207937141U (en) | 2018-10-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279110A (en) * | 2018-03-27 | 2018-07-13 | 贵州电网有限责任公司 | The synchronous measuring apparatus and measurement method of wind speed profile in a kind of wind-tunnel |
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2018
- 2018-03-27 CN CN201820418323.6U patent/CN207937141U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279110A (en) * | 2018-03-27 | 2018-07-13 | 贵州电网有限责任公司 | The synchronous measuring apparatus and measurement method of wind speed profile in a kind of wind-tunnel |
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