CN2242460Y - Ball shaped multi-hole probe for three-D flowing field of automatic speed measuring device - Google Patents
Ball shaped multi-hole probe for three-D flowing field of automatic speed measuring device Download PDFInfo
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- CN2242460Y CN2242460Y CN 95215307 CN95215307U CN2242460Y CN 2242460 Y CN2242460 Y CN 2242460Y CN 95215307 CN95215307 CN 95215307 CN 95215307 U CN95215307 U CN 95215307U CN 2242460 Y CN2242460 Y CN 2242460Y
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- 239000000523 sample Substances 0.000 title claims abstract description 37
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 abstract 1
- 238000000691 measurement method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- -1 band connecting pipe Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The utility model relates to a ball-shaped multi-hole probe for three-D flowing field of automatic speed measuring device, which applies to the characteristic of fluid flowing around a ball body. The surface of a sphere probe is provided with seven or more odd pressure sensing holes. The pressure is carried out with data processing after the pressure of the pressure sensing holes is accessed by a computer via a sensing device. The whole measuring process can be automatically completed via the computer. The utility model has the advantages of simple structure, low cost, large wide angle, high sensitivity, no need for manual operation, etc. The utility model can relieve the work load of gaugers from the heavy measurement and data operation. The device can be used for the speed measurement of three-dimensional flow simulation for engineering field, scientific research field, etc.
Description
The utility model relates to a kind of three-dimensional flow field velocity measuring device, relates in particular to a kind of automatic speed measuring device that utilizes spherical porous piezometric tube to measure.
In the prior art,, often need stream field pressure or velocity distribution to carry out test determination in order to further investigate the characteristic that flows in the flow field.Measuring technique commonly used has hot-wire anemometer, laser doppler velocimeter system and spherical five hole piezometric tube etc.Hot-wire anemometer has necessary high-frequency response performance and high sensitivity under the low speed situation, be a kind of effective measurement means of determining high turbulent flow flow field average velocity component and fluctuation velocity component, but its shortcoming is only to be suitable for lower flow velocity.The characteristics of laser doppler measurement technique are noncontacting measurements, the spatial resolution height, and dynamic response is fast, direction sensitivity height; Shortcoming is the equipment complexity, costs an arm and a leg, and needs certain test conditions.Using more sphere five hole piezometric tube at present is five-hole probe, simple in structure, use economical, convenient, but when measuring, need a rotation handle by hand, the angular range of measuring is less, and generally between-45 °-45 °, and the data that record can not reflect the situation in flow field at that time immediately intuitively.
The purpose of this utility model is deficiency and the defective that exists at prior art, design the automatic speed measuring device of spherical porous probe three-dimensional flow field a kind of simple in structure, easy to operate, the measurement of this device can not only realize big wide-angle, high sensitivity, and can carry out data acquisition and data processing automatically.
The utility model is achieved through the following technical solutions: it props up handle by the probe of spherical probes, band connecting pipe, probe position control system and data presentation system are formed, it is characterized in that on the surface of spherical probes, having 7 or greater than 7 odd number pressure sensing hole, the distribution of this pressure sensing hole on sphere is: a hole is at ball head, be center pit, two holes are positioned on the longitudinal profile at a center pit and a handle axial line place, and all the other several Kong Ze are evenly distributed on a certain ball cross section of ball; Simultaneously, its data presentation system adopts computer data acquiring and data handling system.To the position control of probe, then can pass through computing machine, displacement transducer, direct current generator, asynchronous stepper motor, the control system that the three-dimensional coordinate frame is formed realizes automatically.
Technique scheme not only can realize the measurement of wide-angle, and whole measuring process all is by computer controlled automatic, thereby has reached above-mentioned purpose effectively.
Accompanying drawing 1 is a system architecture synoptic diagram of the present utility model.
Accompanying drawing 2 is that the A of accompanying drawing 1 is to zoomed-in view.
Accompanying drawing 3 is that A is to the B-B of view sectional view.
Describe principle of work of the present utility model, structure and embodiment in detail below in conjunction with accompanying drawing.
The utility model is the characteristic that applicating fluid streams spheroid, utilizes the pressure sensing hole of detecting probe surface, at first records the pressure in each hole, again in conjunction with correction coefficient, thereby tries to achieve the size and Orientation of this spot speed.Whole device is by spherical probes 8, and the probe of band connecting pipe props up handle 9, pressure transducer 10, angular displacement sensor 11, displacement transducer 12, three-dimensional coordinate frame 13, the direct current generator 14 of control probe point position, the asynchronous stepper motor 15 and the computing machine 16 of the control probe anglec of rotation are formed.During measurement, spherical probes is put into the flow field, and the wiring of these all parts of measuring system is all connected, send signal by computing machine, drive direct current generator and rotate, so probe just moves forward, its displacement constantly feeds back to computing machine by displacement transducer 12.When displacement reached the given initial point position of user, computing machine just can be controlled motor and stop at this some place.Then, computer-controlled stepper motor 15 begins to drive probe around himself axis rotation, and required equilibrium position just stops operating when finding measurement; Meanwhile, computing machine is adopted the pressure of pressure sensing hole into the line data of going forward side by side through pressure transducer 10 and is handled, and can record the velocity magnitude and the direction of this point, and show on figure.Computer drives driven by motor probe is gone to next point position then, and repeats above-mentioned step and measure, up to measuring last measuring point.Whole measuring process is all by computer controlled automatic.
When adopting 7 hole probes, the distribution of pressure sensing hole on sphere is shown in Fig. 2,3.Wherein the 4th hole is center pit at ball head, and prop up at probe on the longitudinal profile at handle axial line place in 2,4,6 holes, and 1,3,5,7 four holes are evenly distributed on a certain cross section of ball, and distinguishes angle at 45 with center pit 4.The diameter of neglecting spherical probes greatly of pressure sensing hole is different and change to some extent, is generally 0.5-1.0mm, and probe diameter is usually in the scope of 6-12mm.
When big, can adopt 9 holes or 11 holes not to wait for big flow field or probe diameter, like this, measurement range and measuring accuracy can be higher, but also can bring the trouble in the processing.
The utility model compared with prior art has the following advantages and useful effect: this device with Laser doppler measurement technique is compared, and its advantage is not need higher experimental condition, and is simple in structure, Price is low; Compare with existing five-hole probe, measurement category is big, but measuring angle is about 140 °. So Be called big wide-angle, highly sensitive, do not need manually-operated, whole system is fully automatic by computer Control is automatically carried out data and is processed, thereby the gauger is separated from heavy measurement and data computing Take off.
Claims (3)
1, the automatic speed measuring device of a kind of spherical porous probe three-dimensional flow field, it is by spherical probes [8], the probe of band connecting pipe props up handle [9], probe position control system and data presentation system are formed, it is characterized in that having on the surface of spherical probes 7 or greater than 7 odd number pressure sensing hole, one of them is the center pit that is positioned at ball head, and on the longitudinal profile that two are positioned at center pit and handle axial line place, all the other several Kong Ze are evenly distributed on a certain cross section of ball; Data presentation system adopts computer data acquiring and data handling system simultaneously.
2, according to the automatic speed measuring device of the described spherical porous probe three-dimensional flow field of claim 1, it is characterized in that described probe position control system is by computing machine, displacement transducer, the asynchronous stepper motor of the control probe anglec of rotation, the direct current generator and the three-dimensional coordinate frame of control probe point position are formed.
3, according to claim 1 or the automatic speed measuring device of 2 described spherical porous probe three-dimensional flow fields, the diameter that it is characterized in that spherical probes is 6-12mm, and the pressure sensing hole diameter is 0.5-1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95215307 CN2242460Y (en) | 1995-07-07 | 1995-07-07 | Ball shaped multi-hole probe for three-D flowing field of automatic speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95215307 CN2242460Y (en) | 1995-07-07 | 1995-07-07 | Ball shaped multi-hole probe for three-D flowing field of automatic speed measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2242460Y true CN2242460Y (en) | 1996-12-11 |
Family
ID=33864694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95215307 Expired - Fee Related CN2242460Y (en) | 1995-07-07 | 1995-07-07 | Ball shaped multi-hole probe for three-D flowing field of automatic speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2242460Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343675C (en) * | 2005-02-01 | 2007-10-17 | 湖南继善高科技有限公司 | Three-dimensional visual flow direction and speed measuring device of internal fluid fluid field |
| CN102636662A (en) * | 2012-04-20 | 2012-08-15 | 南京航空航天大学 | Full-flow direction flow velocity measurement probe and measurement method thereof |
| CN103983803A (en) * | 2014-04-29 | 2014-08-13 | 国家电网公司 | Five-hole-bulb probe support |
| CN104155473A (en) * | 2014-08-12 | 2014-11-19 | 南京航空航天大学 | Wind speed and wind direction sensing device |
| CN106090539A (en) * | 2016-06-12 | 2016-11-09 | 哈尔滨工程大学 | Single, double sliding-rail combined type three-dimensional coordinate frame |
| CN106226771A (en) * | 2016-08-31 | 2016-12-14 | 兰州交通大学 | A kind of alignment system and method |
| CN106290968A (en) * | 2016-09-14 | 2017-01-04 | 华北电力科学研究院(西安)有限公司 | A kind of large space pulsatile flow field three-dimension measuring system and measuring method |
| CN106353529A (en) * | 2016-09-14 | 2017-01-25 | 华北电力科学研究院(西安)有限公司 | Three-dimensional measurement device for large-space steady flow field |
| CN106918436A (en) * | 2017-03-02 | 2017-07-04 | 北京航空航天大学 | A kind of pore pressure force probe of round platform four is combed |
| CN107063333A (en) * | 2017-04-19 | 2017-08-18 | 德阳鑫晶科技有限公司 | The three hole chaining pins suitable for the ternary flow field containing steam |
| CN108801584A (en) * | 2017-10-17 | 2018-11-13 | 沈熊 | Wave current flow velocity measuring system, water hole formula swimming machine system based on Laser Doppler speed and velocity correction method |
| CN109856420A (en) * | 2019-01-17 | 2019-06-07 | 江苏大学 | A kind of flow velocity method for automatic measurement of the blade water pump outlet pipe based on stepper motor |
| CN110568869A (en) * | 2019-09-10 | 2019-12-13 | 中国航发沈阳发动机研究所 | Control method for improving automatic tracking test precision of control probe |
| CN114252231A (en) * | 2021-12-22 | 2022-03-29 | 华能酒泉发电有限公司 | Steam flow field measurement system in pipeline |
-
1995
- 1995-07-07 CN CN 95215307 patent/CN2242460Y/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343675C (en) * | 2005-02-01 | 2007-10-17 | 湖南继善高科技有限公司 | Three-dimensional visual flow direction and speed measuring device of internal fluid fluid field |
| CN102636662A (en) * | 2012-04-20 | 2012-08-15 | 南京航空航天大学 | Full-flow direction flow velocity measurement probe and measurement method thereof |
| CN103983803A (en) * | 2014-04-29 | 2014-08-13 | 国家电网公司 | Five-hole-bulb probe support |
| CN103983803B (en) * | 2014-04-29 | 2016-05-04 | 国家电网公司 | Five hole bulb-ended probe supports |
| CN104155473A (en) * | 2014-08-12 | 2014-11-19 | 南京航空航天大学 | Wind speed and wind direction sensing device |
| CN106090539A (en) * | 2016-06-12 | 2016-11-09 | 哈尔滨工程大学 | Single, double sliding-rail combined type three-dimensional coordinate frame |
| CN106226771A (en) * | 2016-08-31 | 2016-12-14 | 兰州交通大学 | A kind of alignment system and method |
| CN106353529A (en) * | 2016-09-14 | 2017-01-25 | 华北电力科学研究院(西安)有限公司 | Three-dimensional measurement device for large-space steady flow field |
| CN106290968A (en) * | 2016-09-14 | 2017-01-04 | 华北电力科学研究院(西安)有限公司 | A kind of large space pulsatile flow field three-dimension measuring system and measuring method |
| CN106290968B (en) * | 2016-09-14 | 2018-11-23 | 华北电力科学研究院有限责任公司西安分公司 | A kind of large space pulsatile flow field three-dimension measuring system and measurement method |
| CN106918436A (en) * | 2017-03-02 | 2017-07-04 | 北京航空航天大学 | A kind of pore pressure force probe of round platform four is combed |
| CN107063333A (en) * | 2017-04-19 | 2017-08-18 | 德阳鑫晶科技有限公司 | The three hole chaining pins suitable for the ternary flow field containing steam |
| CN108801584A (en) * | 2017-10-17 | 2018-11-13 | 沈熊 | Wave current flow velocity measuring system, water hole formula swimming machine system based on Laser Doppler speed and velocity correction method |
| CN108801584B (en) * | 2017-10-17 | 2024-04-02 | 沈熊 | Wave flow velocity measurement system based on laser Doppler velocity measurement, water tunnel type swimming machine system and velocity correction method |
| CN109856420A (en) * | 2019-01-17 | 2019-06-07 | 江苏大学 | A kind of flow velocity method for automatic measurement of the blade water pump outlet pipe based on stepper motor |
| CN110568869A (en) * | 2019-09-10 | 2019-12-13 | 中国航发沈阳发动机研究所 | Control method for improving automatic tracking test precision of control probe |
| CN114252231A (en) * | 2021-12-22 | 2022-03-29 | 华能酒泉发电有限公司 | Steam flow field measurement system in pipeline |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |