CN109238635A - A kind of device and its application for measuring flow rotation intensity - Google Patents
A kind of device and its application for measuring flow rotation intensity Download PDFInfo
- Publication number
- CN109238635A CN109238635A CN201811108416.XA CN201811108416A CN109238635A CN 109238635 A CN109238635 A CN 109238635A CN 201811108416 A CN201811108416 A CN 201811108416A CN 109238635 A CN109238635 A CN 109238635A
- Authority
- CN
- China
- Prior art keywords
- bearing
- phototriode
- club head
- body portion
- strut
- Prior art date
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/062—Wind tunnel balances; Holding devices combined with measuring arrangements
Abstract
The device and its application that the present invention relates to a kind of for measuring flow rotation intensity.Described device include: including dummy head and with the model with middle circle canister portion and the model body portion of fin；Strut including branch club head and strut tail portion；Bearing that is nested and being fixed in middle circle canister portion and be plugged with branch club head；Model body portion is equipped with light emitting diode, and branch club head is equipped with the phototriode connecting with signal wire；The photoreceptor that light emitting diode and phototriode are arranged to phototriode can receive the light issued from light emitting diode.The present invention also provides application of the described device in the measurement of tunnel airstream spin intensity.Described device of the invention has many advantages, such as simple structure, easy to manufacture, installation and uses, and can measure the signal of the flow rotation situation of reflection flow field entirety, the measurement especially suitable for tunnel airstream spin intensity.
Description
Technical field
The invention belongs to gas flowfield school measurement equipment fields, and in particular to a kind of for measuring the device of flow rotation intensity
And its application.
Background technique
The purpose that gas flowfield school is surveyed is to examine such as Flow Field Performance and test equipment performance, understands whether flow field quality reaches
To prescribed requirement, to guarantee the quality of flow field test data.Flow rotation intensity is the important indicator of flow field quality, flow rotation
It is too fast, wind-tunnel detection data may be will affect.The flow rotation that flow field is measured in such as wind-tunnel, usually using five-hole probe or
Seven-hole probe carries out, but measure that obtained signal reflects in this way be a point or multiple points flow rotation situation, it is difficult to
The flow rotation situation of reactive flowfield entirety.
Therefore, need at present a kind of for measuring the device of flow rotation intensity, to measure, to be able to reflect flow field whole
The signal of flow rotation strength conditions.
Summary of the invention
In order to solve the problems, such as said one in the prior art or multiple, the present invention provides one kind for measuring air-flow rotation
Turn the device of intensity, described device includes:
Model, the model include dummy head and the model body portion being fixedly connected with the dummy head；The model
Body portion has middle circle canister portion and at least two fins radially extended relative to the middle circle canister portion；
Strut, the strut include the strut tail portion positioned at the branch club head of one end and positioned at the other end；
Bearing, the bearing have concentric annular outer wall and annular inner wall；
Wherein the bearing is nested and is fixed in the middle circle canister portion and the branch club head grafting and is fixed on
In the bearing, axis of the model body portion by bearing around the strut is rotated；And
Wherein model body portion is equipped with light emitting diode, and the branch club head is equipped with phototriode, the photoelectricity three
Pole pipe is electrically connected with for the signal wire from phototriode output electric signal, the light emitting diode and the photoelectricity three
Pole pipe, which is arranged to the phototriode, can receive the light issued from the light emitting diode.
Second aspect of the present invention additionally provides device described in first aspect present invention and measures in tunnel airstream spin intensity
In application.
With the five-hole probe or seven apertures in the human head of the flow rotation situation for being typically only capable to one point of measurement or multiple points in the prior art
Probe is compared, and apparatus of the present invention have simple structure, easy to manufacture, installation and use, and can measure and be able to reflect flow field
The advantages that signal of whole flow rotation situation.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the device for measuring flow rotation intensity of the invention；
Fig. 2 is the section view signal of an embodiment of the model of the device for measuring flow rotation intensity of the invention
Figure；
Fig. 3 is the structural schematic diagram of model shown in Fig. 2.
In figure, 1. dummy heads, 2. model body portions, 21. middle circle canister portions, 22. fins, 23. first grooves, 3. nuts,
4. gasket, 5. bearings, 51. balls, 6. light emitting diodes, 7. phototriodes, 8. struts, 81. second grooves, 82. stopper sections,
9. signal wire.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment
It is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this field is general
Logical technical staff every other embodiment obtained without making creative work, belongs to guarantor of the present invention
The range of shield.
As described above, the present invention provides a kind of for measuring the device of flow rotation intensity, described device includes: mould
Type, the model include dummy head and the model body portion being fixedly connected with the dummy head；During model body portion has
Between cylindrical portion and at least two fins radially extended relative to the middle circle canister portion；Strut, the strut packet
Include the strut tail portion positioned at the branch club head of one end and positioned at the other end；Bearing, the bearing have concentric annular outer wall and
Annular inner wall；Wherein the bearing is nested and is fixed in the middle circle canister portion and the branch club head grafting and is fixed on
In the bearing, axis of the model body portion by bearing around the strut is rotated；And the wherein mould
Type body portion be equipped with light emitting diode, the branch club head be equipped with phototriode, the phototriode be electrically connected with for from
The signal wire of the phototriode output electric signal, the light emitting diode and the phototriode are arranged to the light
Electric triode can receive the light issued from the light emitting diode.
The device for measuring flow rotation intensity of the invention when in use, dummy head towards airintake direction, if
Air-flow rotates, and the power that the rotation of model fin receiving air-flow generates revolves model and light emitting diode around bearing and strut
Turn, after such as wind-tunnel stable operation and model spin stabilization, often rotate a circle, the light that light emitting diode issues triggers photoelectricity
Triode generates a high level signal, and rotation speed can be analyzed the signal by data acquisition processing system to obtain, be revolved
Rotary speed can react flow rotation intensity in wind tunnel experiment section flow field, to realize flow rotation in wind tunnel experiment section flow field
The measurement of intensity.
In one embodiment, the middle circle canister portion and the fin are integrally formed.It is optional real at another
It applies in mode, the middle circle canister portion and the fin are by being respectively formed and then the fin being fixed on the middle cylinder
In portion.
In some embodiments, the strut has hollow cavity, and signal wire passes through hollow cavity and phototriode
Connection.
The number and shape of at least two fin are not particularly limited.In some embodiments, described at least two
A fin has 2 to 6 fins, such as can have 2,3,4,5 or 6 fins.In some embodiments, described at least two
A fin is plate fin.It is further preferred that at least two fin is symmetrically arranged at the outer wall of the middle circle canister portion
On.It is described symmetrically to can be axial symmetry such as symmetrical around the central axis of the middle circle canister portion；It is described symmetrically to can also be
Central symmetry, for symmetrical centre for example on the central axis of the middle circle canister portion, for example, described middle circle canister portion is corresponding
The center of circle in section；The symmetrical more preferably rotational symmetry, similar, symmetrical centre is for example in the middle circle canister portion
On mandrel line, the center of circle of for example, described middle circle canister portion respective cross-section.
In other embodiments, the bearing is rolling bearing.The rolling element of rolling bearing can be ball, such as
Ball bearing；It is also possible to needle roller, such as needle bearing；It can also be cylindrical roller, such as roller bearing.In addition preferred
It is that the bearing is made of stainless steel material.
In other embodiments, model body portion is provided with the first groove and the light emitting diode is arranged in
In first groove；And/or the branch club head be provided with the second groove and the phototriode to be arranged in described second recessed
In slot.
In other embodiments, the dummy head is taper, and for example, semi-cone angle is 30 to 40 tapers spent.More
Preferably, the dummy head, which is connected through a screw thread, is fixed in model body portion.For example, the dummy head is circular cone
Shape；Internal screw thread is formed in the bottom of cone, forms external screw thread in the outer wall of the middle circle canister portion；Or on the contrary, in circle
External screw thread is formed on the bottom of taper, forms internal screw thread in the inner wall of the middle circle canister portion；Thus the dummy head is direct
It is screwed in the middle circle canister portion in model body portion.It is, of course, also possible to respectively in the dummy head and model body portion group
A pair of of the threaded hole being mutually aligned is formed at least two positions to fit together when dress, then passes through screw for the model
Head is securely screwed together with model body portion.Certainly, described be connected and fixed can also be other sides of being connected and fixed
Formula, such as welding manner.
In other embodiments, the annular outer wall of the bearing and the annular inner wall of the middle circle canister portion passed through
It is full of and cooperates and be fixed together.
In other embodiments, the annular inner wall of the bearing and the branch club head pass through cone match, and
From the branch club head side nut is screwed to using the combination of nut and gasket on the branch club head and by the axis
It holds and is fixed together with the strut.
In other embodiments, described device further includes for receiving electric signal from the signal wire of described device
And the electric signal is handled to obtain the data acquisition processing system of signal relevant to flow rotation intensity is characterized.
Some more specific embodiments of the invention are further described hereinafter with reference to attached drawing.
Referring to figs. 1 to 3.Wherein, Fig. 1 is the schematic cross-sectional view of the device for measuring flow rotation intensity of the invention；
Fig. 2 is the schematic cross-sectional view of an embodiment of the model of the device for measuring flow rotation intensity of the invention；Fig. 3 is
The structural schematic diagram of model shown in Fig. 2.As shown in Figures 1 to 3, device of the present invention includes model, bearing 5, luminous two
Pole pipe 6, phototriode 7 and strut 8.The model is for example dummy head 1 and model body portion 2 from left to right.The model
Head 1 can be taper, such as semi-cone angle is the cone of 30 to 40 degree；Model body portion 2 has 21 He of middle circle canister portion
At least two radially extended integrally formed and relative to the middle circle canister portion 21 with the middle circle canister portion 21
A plate fin 22.The dummy head 1 and model body portion 2 are connected through a screw thread fixation.Then, model body portion 2 is circle
The assembly of cylinder and plate, the dummy head 1 and model body portion 2 be circular cone, cylinder, plate assembly and be segmented connection.
Model body portion 2 can be internally provided with the first groove 23 for installing light emitting diode 6；The light emitting diode 6
It can be mounted in the first groove 23 after through connection power supply such as battery and switch (not shown).The bearing 5 is ball
Bearing, there is two rows of balls 51 as rolling element between the outer ring and inner ring of the ball bearing, outer surface (i.e. rolling bearing
The outer surface of outer ring) with the inner surface (i.e. annular inner wall surface) of the middle circle canister portion in model body portion 2 interference can be used
It is fixedly connected, the inner surface (i.e. the inner surface of the inner ring of rolling bearing) and the branch club head of strut 8 of the bearing 5 pass through
Cone match is simultaneously strained and fixed using nut 3 and gasket 4.The strut 8 can be provided at such as position of branch club head
Second groove 81, the phototriode 7 may be mounted in the second groove 81.The light emitting diode 6 is mounted to face
Second groove 81；The phototriode 7 is mounted to collector junction and faces the first groove 23；By signal wire 9 from phototriode
Pipe 7 exports electric signal.The strut 8 has hollow cavity, and the signal wire 9 passes through hollow cavity and one end and phototriode
7 connections, the other end for example can receive processor with electric signal and connect.The strut 8 has at the position close to strut tail portion
Have stopper section 82, from stopper section 82 to the end of strut tail portion can for example with screw thread with for example using when it is solid for installing
The fixed part (not shown) for determining the fixation bracket (not shown) of described device is threadedly coupled.In some preferred embodiments
In, described device further includes the data acquisition process for receiving electric signal from the signal wire 9 and being handled the signal
System such as electric signal receives processor (not shown).
Second aspect of the present invention provides device described in first aspect present invention in the measurement of tunnel airstream spin intensity
Application.Certainly, device described in first aspect present invention of the invention can be also used for other need to measure flow rotation it is strong
In other occasions of degree.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of for measuring the device of flow rotation intensity, which is characterized in that described device includes:
Model, the model include dummy head and the model body portion being fixedly connected with the dummy head；Model body portion
With middle circle canister portion and relative at least two fins of the middle circle canister portion radially extended；
Strut, the strut include the strut tail portion positioned at the branch club head of one end and positioned at the other end；
Bearing, the bearing have concentric annular outer wall and annular inner wall；
Wherein the bearing is nested and is fixed in the middle circle canister portion and the branch club head grafting and is fixed on described
In bearing, axis of the model body portion by bearing around the strut is rotated；And
Wherein model body portion is equipped with light emitting diode, and the branch club head is equipped with phototriode, the phototriode
It is electrically connected with for the signal wire from phototriode output electric signal, the light emitting diode and the phototriode
The light issued from the light emitting diode can be received by being arranged to the phototriode.
2. the apparatus according to claim 1, which is characterized in that at least two fin is plate fin；Preferably,
At least two fin is symmetrically arranged on the outer wall of the middle circle canister portion.
3. the apparatus according to claim 1, which is characterized in that the bearing is rolling bearing, it is further preferred that the axis
It holds and is made of stainless steel material.
4. the apparatus according to claim 1, it is characterised in that:
Model body portion is provided with the first groove and the light emitting diode is arranged in the first groove；And/or
The branch club head is provided with the second groove and the phototriode is arranged in second groove.
5. the apparatus according to claim 1, which is characterized in that the dummy head is taper, and more preferably semi-cone angle is
The taper of 30 to 40 degree.
6. the apparatus according to claim 1, which is characterized in that the dummy head, which is connected through a screw thread, is fixed on the mould
In the middle circle canister portion in type body portion.
7. the apparatus according to claim 1, which is characterized in that the annular outer wall of the bearing and the middle circle canister portion
Annular inner wall is fixed together by interference fit.
8. the apparatus according to claim 1, which is characterized in that the annular inner wall of the bearing passes through with the branch club head
Cone match, and the nut is screwed to the branch club head from branch club head side using the combination of nut and gasket
Above the bearing and the strut are fixed together.
9. the apparatus according to claim 1, which is characterized in that described device further includes for the letter from described device
Number line receives electric signal and is handled the electric signal to obtain the data of signal relevant to flow rotation intensity is characterized and adopt
Collect processing system.
10. application of the device described in any one of claims 1 to 9 in the measurement of tunnel airstream spin intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108416.XA CN109238635A (en) | 2018-09-21 | 2018-09-21 | A kind of device and its application for measuring flow rotation intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108416.XA CN109238635A (en) | 2018-09-21 | 2018-09-21 | A kind of device and its application for measuring flow rotation intensity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109238635A true CN109238635A (en) | 2019-01-18 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811108416.XA Pending CN109238635A (en) | 2018-09-21 | 2018-09-21 | A kind of device and its application for measuring flow rotation intensity |
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| CN (1) | CN109238635A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130087Y (en) * | 2007-12-20 | 2008-10-08 | 黄晓嫔 | Airflow detecting device |
| CN102072979A (en) * | 2010-10-26 | 2011-05-25 | 清华大学 | Multi-point synchronous triggering system and method in VFTO (Very Fast Transient Overvoltage) measurement |
| CN102346047A (en) * | 2010-07-30 | 2012-02-08 | 张新虎 | Photoelectric coupler for measuring gas flow |
| CN204903567U (en) * | 2015-07-01 | 2015-12-23 | 王军华 | Take vane formula anemoscope of warning light |
| CN105466663A (en) * | 2015-12-09 | 2016-04-06 | 中国航天空气动力技术研究院 | An apparatus for accurately measuring a local air-flow offset angle in a wind tunnel transonic speed test section |
| CN107389976A (en) * | 2017-09-11 | 2017-11-24 | 郑兴 | A kind of instrument and meter detects wind direction detector |
| CN107621347A (en) * | 2017-08-02 | 2018-01-23 | 中国航空工业集团公司沈阳空气动力研究所 | In the mechanism and measuring method of model inner utilization Hall switch measurement rolling rotating speed |
| CN108254154A (en) * | 2018-04-13 | 2018-07-06 | 西安科技大学 | A kind of mine arched tunnel Wind volume detector and method |
-
2018
- 2018-09-21 CN CN201811108416.XA patent/CN109238635A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130087Y (en) * | 2007-12-20 | 2008-10-08 | 黄晓嫔 | Airflow detecting device |
| CN102346047A (en) * | 2010-07-30 | 2012-02-08 | 张新虎 | Photoelectric coupler for measuring gas flow |
| CN102072979A (en) * | 2010-10-26 | 2011-05-25 | 清华大学 | Multi-point synchronous triggering system and method in VFTO (Very Fast Transient Overvoltage) measurement |
| CN204903567U (en) * | 2015-07-01 | 2015-12-23 | 王军华 | Take vane formula anemoscope of warning light |
| CN105466663A (en) * | 2015-12-09 | 2016-04-06 | 中国航天空气动力技术研究院 | An apparatus for accurately measuring a local air-flow offset angle in a wind tunnel transonic speed test section |
| CN107621347A (en) * | 2017-08-02 | 2018-01-23 | 中国航空工业集团公司沈阳空气动力研究所 | In the mechanism and measuring method of model inner utilization Hall switch measurement rolling rotating speed |
| CN107389976A (en) * | 2017-09-11 | 2017-11-24 | 郑兴 | A kind of instrument and meter detects wind direction detector |
| CN108254154A (en) * | 2018-04-13 | 2018-07-06 | 西安科技大学 | A kind of mine arched tunnel Wind volume detector and method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190118 |