CN106885682A - A kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow - Google Patents

A kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow Download PDF

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Publication number
CN106885682A
CN106885682A CN201710126245.2A CN201710126245A CN106885682A CN 106885682 A CN106885682 A CN 106885682A CN 201710126245 A CN201710126245 A CN 201710126245A CN 106885682 A CN106885682 A CN 106885682A
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CN
China
Prior art keywords
probe
cylinder
dynamic pressure
dimensional flow
hole
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Application number
CN201710126245.2A
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Chinese (zh)
Inventor
马宏伟
马融
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北京航空航天大学
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Application filed by 北京航空航天大学 filed Critical 北京航空航天大学
Priority to CN201710126245.2A priority Critical patent/CN106885682A/en
Publication of CN106885682A publication Critical patent/CN106885682A/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/06Measuring arrangements specially adapted for aerodynamic testing

Abstract

The invention belongs to pressure test technical field, disclose a kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow, including end of probe, pole, end of probe includes the cylinder of bottom surface, cylinder beveling body altogether, 2 dynamic pressure transducers of encapsulation in it, the cylindrical sides of body inclined-plane and the same side are chamfer in cylinder, are respectively provided with a pressure experience hole, the different pressures sensor with encapsulation is connected respectively, and sensor wire draws probe tails by probe pole internal channel.The present invention is demarcated by calibration wind tunnel, can be measured in rotor outlet subsonic speed three-dimensional flow field, and 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 mounted with 2 dynamic pressure transducers, has the advantages that simple structure, size be small, low cost.

Description

A kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow

Technical field

The invention belongs to pressure test technical field, it is related to the dynamic pressure measurement device of subsonic speed Unsteady Flow, has Body is related to a kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow, it is adaptable to measures turbomachine and turns In subexit subsonic speed three-dimensional flow field, the Three-dimensional Flow such as the angle of pitch, deflection angle, stagnation pressure, static pressure and Mach number parameter is from pressure face To the circumferentially distributed of 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 , it is desirable to obtain the Three-dimensional Flow parameter such as the rotor outlet angle of pitch, deflection angle, stagnation pressure, static pressure and Mach number from pressure face to suction Circumferentially distributed, the design and flow field diagnosis for verifying rotor, to improve machine performance in power face.

The dynamic pressure probe of measurement rotor outlet subsonic speed three-dimensional non-steady flowing parameter is at least provided with 4 pressure experiences Hole, built with 4 dynamic pressure transducers, one side dynamic pressure probe size is not easy to be made small, and size conference is seriously done Tested flow field is disturbed, on the other hand, dynamic pressure probe cost dislikes high.

The content of the invention

The technical problem to be solved in the present invention is:Measurement turbine rotor outlet subsonic speed three-dimensional flow field in, the angle of pitch, partially The Three-dimensional Flow parameter such as corner, stagnation pressure, static pressure and Mach number is circumferentially distributed from pressure face to suction surface.

Therefore, the invention provides a kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow, Compared with porous dynamic pressure probe, head is only mounted with 2 dynamic pressure transducers, with simple structure, size be small, cost Low the characteristics of, it is suitable in measurement Subsonic Rotor outlet three-dimensional flow field, 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.

Technical solution of the invention is:

1st, a kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow, it is characterised in that:Including End of probe (1), pole (2), cylinder (3) of the end of probe (1) including common bottom surface, cylinder chamfer body (4), inside it 2 dynamic pressure transducers of individual packages;On the inclined-plane of cylinder beveling body (4) of end of probe (1), a feeling of stress is provided with It is inclined hole (5) by hole, a dynamic pressure transducer of the inclined hole (5) only with encapsulation is connected;In the beveling of end of probe (1) cylinder The same side on body (4) inclined-plane, another pressure experience hole is provided with cylinder (3) side of underface, is positive hole (6), positive hole (6) another dynamic pressure transducer only with encapsulation is connected;The center line of inclined hole (5), the center line and probe of positive hole (6) Cylinder (3) axis in portion (1) is in approximately the same plane;Cylinder (3) axis of end of probe (1) and probe pole (2) axle Line overlaps.

2nd, further, a diameter of 0.6 millimeter to 1.5 millimeters of inclined hole (5), inclined hole (5) center of circle chamfers body (4) tiltedly with cylinder The distance of face minimum point is 1 millimeter to 5 millimeters.

3rd, further, a diameter of 0.6 millimeter to 1.5 millimeters of positive hole (6), positive hole (6) center of circle chamfers body (4) tiltedly with cylinder The distance of face minimum point is 1 millimeter to 5 millimeters.

4th, further, a diameter of 3.7 millimeters to 6 millimeters of the cylinder (3) of end of probe (1).

5th, further, the cylinder (3) of cylinder beveling body (4) part of end of probe (1), inclined-plane and end of probe (1) The angle of axis is 20 ° to 54 °.

6th, further, the cylinder (3) of end of probe (1) is long 10 millimeters to 40 millimeters.

7th, further, probe pole (2) is cylinder, and 2 of encapsulation in round pipeline, end of probe (1) are provided with inside it Individual dynamic pressure transducer cable (7) 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, in can measuring rotor outlet subsonic speed three-dimensional flow field, 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, is provided to improve rotor performance Measured data foundation.Compared with the porous dynamic pressure probe of measurement subsonic speed three-dimensional flow field, head is mounted with 2 dynamic pressures Sensor, has the advantages that simple structure, size be small, low cost.

Brief description of the drawings

Fig. 1 is the cylindrical type diplopore dynamic pressure probe of the measurement rotor outlet subsonics three-dimensional flow in the embodiment of the present invention Structural representation.

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- cylinders, 4- cylinders beveling body, 5- inclined holes, the positive holes of 6-, 7- lines Cable.

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, describing a kind of cylindrical type diplopore dynamic for measuring rotor outlet subsonics three-dimensional flow in the present embodiment Pressure probe, including end of probe (1), pole (2), cylinder (3) of the end of probe (1) including common bottom surface, cylinder beveling body (4), its internal independence encapsulates 2 dynamic pressure transducers;On the inclined-plane of cylinder beveling body (4) of end of probe (1), it is provided with One pressure experience hole, is inclined hole (5), and a dynamic pressure transducer of the inclined hole (5) only with encapsulation is connected;In end of probe (1) cylinder chamfers the same side on body (4) inclined-plane, and another pressure experience hole is provided with cylinder (3) side of underface, is just Hole (6), another dynamic pressure transducer of positive hole (6) only with encapsulation is connected;The center line of inclined hole (5), the center of positive hole (6) Cylinder (3) axis of line and end of probe (1) is in approximately the same plane;Cylinder (3) axis and probe of end of probe (1) Pole (2) axis overlaps.

A diameter of 0.6 millimeter of inclined hole (5), inclined hole (5) center of circle is with the distance of cylinder beveling body (4) inclined-plane minimum point 2.8 millimeters.

A diameter of 0.6 millimeter of positive hole (6), positive hole (6) center of circle is 1 with the distance of cylinder beveling body (4) inclined-plane minimum point Millimeter.

A diameter of 4 millimeters of the cylinder (3) of end of probe (1).

The angle of cylinder (3) axis of cylinder beveling body (4) part of end of probe (1), inclined-plane and end of probe (1) It is 45 °.

The cylinder (3) of end of probe (1) is long 26 millimeters.

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) 2 dynamic pressure transducer cables (7) of encapsulation draw probe tails by the pipeline in probe pole (2) in.

The cylindrical type diplopore dynamic pressure probe of the measurement rotor outlet subsonics three-dimensional flow introduced in the embodiment of the present invention, warp The demarcation of subsonic speed calibration wind tunnel is crossed, nominal data can be obtained.During actual measurement rotor outlet subsonic speed three-dimensional flow field, the cylinder Type diplopore dynamic pressure probe is rotated around probe branch rod axis, places several different angular positions, is measured respectively, by probe 2 built-in dynamic pressure transducers measure several groups of unsteady pressure datas, and number is demarcated using the subsonic speed calibration wind tunnel for obtaining According to, data processing is carried out, in can obtaining rotor outlet subsonic speed three-dimensional flow field, the angle of pitch, deflection angle, stagnation pressure, static pressure and horse The Three-dimensional Flow parameter such as conspicuous number is circumferentially distributed from pressure face to suction surface.

Claims (7)

1. it is a kind of measure rotor outlet subsonics three-dimensional flow cylindrical type diplopore dynamic pressure probe, it is characterised in that:Including probe Head (1), pole (2), cylinder (3) of the end of probe (1) including common bottom surface, cylinder chamfer body (4), its internal independence 2 dynamic pressure transducers of encapsulation;On the inclined-plane of cylinder beveling body (4) of end of probe (1), a pressure experience is provided with Hole, is inclined hole (5), and a dynamic pressure transducer of the inclined hole (5) only with encapsulation is connected;Body is chamfer in end of probe (1) cylinder (4) the same side on inclined-plane, another pressure experience hole is provided with cylinder (3) side of underface, is positive hole (6), positive hole (6) Only another dynamic pressure transducer with encapsulation is connected;The center line of inclined hole (5), the center line and end of probe of positive hole (6) (1) cylinder (3) axis is in approximately the same plane;Cylinder (3) axis of end of probe (1) and probe pole (2) axis Overlap.
2. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow cylindrical type diplopore dynamic pressure probe, It is characterized in that:A diameter of 0.6 millimeter to 1.5 millimeters of inclined hole (5), inclined hole (5) center of circle is minimum with cylinder beveling body (4) inclined-plane The distance of 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 cylindrical type diplopore dynamic pressure probe, It is characterized in that:A diameter of 0.6 millimeter to 1.5 millimeters of positive hole (6), positive hole (6) center of circle is minimum with cylinder beveling body (4) inclined-plane The distance of point is 1 millimeter to 5 millimeters.
4. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow cylindrical type diplopore dynamic pressure probe, It is characterized in that:A diameter of 3.7 millimeters to 6 millimeters of the cylinder (3) of end of probe (1).
5. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow cylindrical type diplopore dynamic pressure probe, It is characterized in that:Cylinder beveling body (4) part of end of probe (1), inclined-plane and cylinder (3) axis of end of probe (1) Angle is 20 ° to 54 °.
6. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow cylindrical type diplopore dynamic pressure probe, It is characterized in that:The cylinder (3) of end of probe (1) is long 10 millimeters to 40 millimeters.
7. it is according to claim 1 it is a kind of measure rotor outlet subsonics three-dimensional flow cylindrical type diplopore dynamic pressure probe, It is characterized in that:Described probe pole (2) is cylinder, and 2 of encapsulation in round pipeline, end of probe (1) are provided with inside it Individual dynamic pressure transducer cable (7) draws probe tails by the pipeline in probe pole (2).
CN201710126245.2A 2017-03-06 2017-03-06 A kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow CN106885682A (en)

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CN201710126245.2A CN106885682A (en) 2017-03-06 2017-03-06 A kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow

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CN201710126245.2A CN106885682A (en) 2017-03-06 2017-03-06 A kind of cylindrical type diplopore dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63213612A (en) * 1987-02-27 1988-09-06 Kawasou Denki Kogyo Kk 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
CN103152970A (en) * 2013-01-31 2013-06-12 北京航空航天大学 Cylindrical Langmuir probe for plasma diagnostics
CN104048808A (en) * 2013-03-14 2014-09-17 中国科学院工程热物理研究所 Dynamic entropy probe
CN105716788A (en) * 2015-11-02 2016-06-29 北京航空航天大学 Three-hole transonic speed pressure probe
CN105890804A (en) * 2016-04-08 2016-08-24 北京航空航天大学 Method of improving airflow total temperature measurement precision of temperature sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63213612A (en) * 1987-02-27 1988-09-06 Kawasou Denki Kogyo Kk 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
CN103152970A (en) * 2013-01-31 2013-06-12 北京航空航天大学 Cylindrical Langmuir probe for plasma diagnostics
CN104048808A (en) * 2013-03-14 2014-09-17 中国科学院工程热物理研究所 Dynamic entropy probe
CN105716788A (en) * 2015-11-02 2016-06-29 北京航空航天大学 Three-hole transonic speed pressure probe
CN105890804A (en) * 2016-04-08 2016-08-24 北京航空航天大学 Method of improving airflow total temperature measurement precision of temperature sensor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李井洋等: "楔顶双孔探针测量跨声多级压气机转子出口三维动态流场的方法", 《航空动力学报》 *
蒋浩康等: "研究转子内流动的大尺寸轴流压气机实验装置和动态测量技术", 《航空动力学报》 *

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