CN106885681A - A kind of monocline hole dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow field - Google Patents
A kind of monocline hole dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow field Download PDFInfo
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- CN106885681A CN106885681A CN201710118903.3A CN201710118903A CN106885681A CN 106885681 A CN106885681 A CN 106885681A CN 201710118903 A CN201710118903 A CN 201710118903A CN 106885681 A CN106885681 A CN 106885681A
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- probe
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- dimensional flow
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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
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The invention belongs to pressure test technical field, disclose a kind of monocline hole dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow field, including end of probe, pole, end of probe is wedge tip circle cylinder, one dynamic pressure transducer of its enclosed inside, on the inclined-plane on end of probe wedge top, is provided with a pressure experience hole, the hole connects with the dynamic pressure transducer in end of probe, and sensor wire draws probe tails by probe pole internal channel.The present invention is demarcated by calibration wind tunnel, in rotor outlet being measured there is the subsonic speed three-dimensional flow field of the larger positive angle of pitch, the Three-dimensional Flow parameter such as the angle of pitch, deflection angle, stagnation pressure, static pressure and Mach number is circumferentially distributed from pressure face to suction surface, and measured data foundation is provided to improve rotor performance.Compared with the porous dynamic pressure probe of measurement subsonic speed three-dimensional flow field, head is only mounted with 1 dynamic pressure transducer, has the advantages that simple structure, size be small, low cost.
Description
Technical field
The invention belongs to pressure test technical field, it is related to the dynamic pressure measurement device in subsonic speed flow field, and in particular to
A kind of monocline hole dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow field, it is adaptable to measure turbomachine Subsonic Rotor
Three-dimensional flow field of the outlet with the larger positive angle of pitch, can measure to flow the angle of pitch, deflection angle, stagnation pressure, static pressure and Mach number etc.
Three-dimensional Flow parameter is circumferentially distributed from pressure face to suction surface.
Background technology
Due to the rotation of the rotors such as compressor, fan, turbine, compressor, blower fan, pump, visited using conventional steady state pressure
Pin, it is impossible to measure the Dynamic Flow Field of rotor outlet, it is impossible to tell rotor outlet from pressure face to suction surface to flow parameter
Circumferentially distributed, hot-wire anemometer can measure the dynamic speed signal of rotor outlet, but can not provide dynamic pressure information.Leaf
Turbine experiment is more desirable to obtain the measurement data that rotor outlet contains dynamic pressure information, for rotor outlet subsonics three-dimensional flow
, due to the effect of centrifugal force, typically with the larger positive angle of pitch, it is desirable to obtain the rotor outlet angle of pitch, deflection angle, total
The Three-dimensional Flow parameter such as pressure, static pressure and Mach number is circumferentially distributed from pressure face to suction surface, for verify rotor design and
Flow field diagnoses, to improve machine performance.
The dynamic pressure probe of existing measurement rotor outlet subsonic speed Three-dimensional Flow parameter is at least provided with 2 pressure experiences
Hole, built with 2 dynamic pressure transducers, one side dynamic pressure probe size is not easy to be made small, on the other hand, dynamic pressure
Force probe cost dislikes high.
The content of the invention
The technical problem to be solved in the present invention is：Measurement turbine rotor outlet has the subsonic speed three of the larger positive angle of pitch
In dimension flow field, circumference of the Three-dimensional Flow parameter such as the angle of pitch, deflection angle, stagnation pressure, static pressure and Mach number from pressure face to suction surface
Distribution.
Therefore, the invention provides it is a kind of measure rotor outlet subsonics three-dimensional flow field monocline hole dynamic pressure probe, with
Porous dynamic pressure probe is compared, and end of probe is only mounted with 1 dynamic pressure transducer, relative to have simple structure, size
The characteristics of small, low cost, in being suitable for measuring Subsonic Rotor three-dimensional flow field of the outlet with the larger positive angle of pitch, the angle of pitch,
The Three-dimensional Flow parameter such as deflection angle, stagnation pressure, static pressure and Mach number is circumferentially distributed from pressure face to suction surface.
Technical solution of the invention is：
1st, a kind of monocline hole dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow field, it is characterised in that：Including visiting
Needle section (1), pole (2), the end of probe (1) is wedge tip circle cylinder, one dynamic pressure transducer of its enclosed inside,
On the inclined-plane (3) on end of probe (1) wedge top, a pressure experience hole (4) is provided with, pressure experience hole (4) fill with end of probe (1)
That dynamic pressure transducer having is connected.The axis of the center line in pressure experience hole (4) and end of probe (1) cylinder is same
In one plane.The axis of end of probe (1) cylinder overlaps with the axis of probe pole (2).
2nd, further, a diameter of 0.6 millimeter to 1.5 millimeters of the end of probe (1) pressure experience hole (4), feeling of stress
It it is 1 millimeter to 5 millimeters by the center of circle of hole (4) and the distance of end of probe (1) wedge top bevel (3) minimum point.
3rd, further, a diameter of 1.5 millimeters to 6 millimeters of end of probe (1) cylinder.
4th, further, the end of probe (1) wedge top bevel (3) and the angle of end of probe (1) cylinder axis are 25 °
To 54 °.
5th, further, the cylinder of the end of probe (1) is long 10 millimeters to 40 millimeters.
6th, further, described probe pole (2) is cylinder, and envelope in round pipeline, end of probe (1) is provided with inside it
The cable (5) of the dynamic pressure transducer of dress draws probe tails by the pipeline in probe pole (2).
The beneficial effects of the invention are as follows：
The present invention is demarcated by calibration wind tunnel, and can measure rotor outlet has the subsonic speed three-dimensional flow of the larger positive angle of pitch
In, the Three-dimensional Flow parameter such as the angle of pitch, deflection angle, stagnation pressure, static pressure and Mach number is circumferentially distributed from pressure face to suction surface,
Measured data foundation is provided to improve rotor performance.Compared with the porous dynamic pressure probe of measurement subsonic speed three-dimensional flow field, head
Portion is only mounted with 1 dynamic pressure transducer, has the advantages that simple structure, size be small, low cost.
Brief description of the drawings
Fig. 1 is the knot of the monocline hole dynamic pressure probe of the measurement rotor outlet subsonics three-dimensional flow field in the embodiment of the present invention
Structure schematic diagram.
Fig. 2 is the left side view of Fig. 1.
Fig. 3 is the A direction views of Fig. 2.
Wherein：1- end of probes, 2- probe poles, 3- inclined-planes, 4- pressure experiences hole, 5- cables.
Specific embodiment
The present invention will be described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of monocline hole for measuring rotor outlet subsonics three-dimensional flow field is described in the present embodiment dynamically pressing
Force probe, including end of probe (1), pole (2), end of probe (1) are wedge tip circle cylinder, one dynamic pressure of its enclosed inside
Sensor, on the inclined-plane (3) on end of probe (1) wedge top, is provided with a pressure experience hole (4), pressure experience hole (4) and probe
That dynamic pressure transducer connection that head (1) is equipped with.The center line in pressure experience hole (4) and end of probe (1) cylinder
Axis in approximately the same plane.The axis of end of probe (1) cylinder overlaps with the axis of probe pole (2).
A diameter of 0.6 millimeter of end of probe (1) pressure experience hole (4), the center of circle of pressure experience hole (4) and end of probe
(1) distance of wedge top bevel (3) minimum point is 2.1 millimeters.
A diameter of 3 millimeters of end of probe (1) cylinder, it is long 30 millimeters.
End of probe (1) wedge top bevel (3) are 45 ° with the angle of end of probe (1) cylinder axis.
Probe pole (2) is cylinder, and 6 millimeters of diameter is provided with round passage, 4 millimeters of diameter, end of probe inside it
(1) cable (5) of the dynamic pressure transducer of encapsulation draws probe tails by the pipeline in probe pole (2) in.
The monocline hole dynamic pressure probe of the measurement rotor outlet subsonics three-dimensional flow field introduced in the embodiment of the present invention, passes through
Subsonic speed calibration wind tunnel is demarcated, and can obtain nominal data.During actual measurement rotor outlet subsonic speed three-dimensional flow field, the monocline hole
Dynamic pressure probe is rotated around probe branch rod axis, places several different angular positions, is measured respectively, built-in by probe
That branch dynamic pressure transducer measures several groups of unsteady pressure datas, using the subsonic speed calibration wind tunnel nominal data for obtaining, enters
Row data processing, can obtain during rotor outlet has a subsonic speed three-dimensional flow field of the larger positive angle of pitch, the angle of pitch, deflection angle,
The Three-dimensional Flow parameter such as stagnation pressure, static pressure and Mach number is circumferentially distributed from pressure face to suction surface.
Claims (6)
1. it is a kind of measure rotor outlet subsonics three-dimensional flow field monocline hole dynamic pressure probe, it is characterised in that：Including probe
Portion (1), pole (2), the end of probe (1) are wedge tip circle cylinder, one dynamic pressure transducer of its enclosed inside, in probe
On the inclined-plane (3) on head (1) wedge top, a pressure experience hole (4), pressure experience hole (4) and end of probe (1) encapsulation are provided with
That dynamic pressure transducer is connected.The axis of the center line in pressure experience hole (4) and end of probe (1) cylinder is same
In plane.The axis of end of probe (1) cylinder overlaps with the axis of probe pole (2).
2. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow field monocline hole dynamic pressure probe, its
It is characterised by：A diameter of 0.6 millimeter to 1.5 millimeters of pressure experience hole (4), the center of circle of pressure experience hole (4) and end of probe
(1) distance of wedge top bevel (3) minimum point is 1 millimeter to 5 millimeters.
3. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow field monocline hole dynamic pressure probe, its
It is characterised by：A diameter of 1.5 millimeters to 6 millimeters of end of probe (1) cylinder.
4. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow field monocline hole dynamic pressure probe, its
It is characterised by：The end of probe (1) wedge top bevel (3) is 25 ° to 54 ° with the angle of end of probe (1) cylinder axis.
5. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow field monocline hole dynamic pressure probe, its
It is characterised by：End of probe (1) cylinder is long 10 millimeters to 40 millimeters.
6. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow field monocline hole dynamic pressure probe, its
It is characterised by：Described probe pole (2) is cylinder, and the dynamic of encapsulation in round pipeline, end of probe (1) is provided with inside it
The cable (5) of pressure sensor draws probe tails by the pipeline in probe pole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710118903.3A CN106885681A (en) | 2017-03-02 | 2017-03-02 | A kind of monocline hole dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710118903.3A CN106885681A (en) | 2017-03-02 | 2017-03-02 | A kind of monocline hole dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow field |
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| Publication Number | Publication Date |
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| CN106885681A true CN106885681A (en) | 2017-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710118903.3A Pending CN106885681A (en) | 2017-03-02 | 2017-03-02 | A kind of monocline hole dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow field |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374282A (en) * | 2018-12-10 | 2019-02-22 | 中国航发四川燃气涡轮研究院 | A kind of rotatable test measurement mechanism |
| CN111677560A (en) * | 2020-06-05 | 2020-09-18 | 中国航发沈阳发动机研究所 | Rotor blade shifting structure |
| CN113340561A (en) * | 2021-08-02 | 2021-09-03 | 中国空气动力研究与发展中心空天技术研究所 | Eccentric cylindrical single-hole pneumatic probe for measuring precision in high altitude |
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| JPS63213612A (en) * | 1987-02-27 | 1988-09-06 | Nippon Steel Corp | Probe instrument for shaft furnace |
| US5233865A (en) * | 1991-04-24 | 1993-08-10 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Probe systems for measuring static pressure and turbulence intensity in fluid streams |
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2017
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| JPS63213612A (en) * | 1987-02-27 | 1988-09-06 | Nippon Steel Corp | Probe instrument for shaft furnace |
| US5233865A (en) * | 1991-04-24 | 1993-08-10 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Probe systems for measuring static pressure and turbulence intensity in fluid streams |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374282A (en) * | 2018-12-10 | 2019-02-22 | 中国航发四川燃气涡轮研究院 | A kind of rotatable test measurement mechanism |
| CN109374282B (en) * | 2018-12-10 | 2021-05-04 | 中国航发四川燃气涡轮研究院 | Rotatable test measuring mechanism |
| CN111677560A (en) * | 2020-06-05 | 2020-09-18 | 中国航发沈阳发动机研究所 | Rotor blade shifting structure |
| CN113340561A (en) * | 2021-08-02 | 2021-09-03 | 中国空气动力研究与发展中心空天技术研究所 | Eccentric cylindrical single-hole pneumatic probe for measuring precision in high altitude |
| CN113340561B (en) * | 2021-08-02 | 2021-10-29 | 中国空气动力研究与发展中心空天技术研究所 | Eccentric cylindrical single-hole pneumatic probe for measuring precision in high altitude |
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Application publication date: 20170623 |