CN106950003B - Conical single-hole dynamic pressure probe for measuring rotor outlet transonic three-dimensional flow field - Google Patents

Conical single-hole dynamic pressure probe for measuring rotor outlet transonic three-dimensional flow field Download PDF

Info

Publication number
CN106950003B
CN106950003B CN201710115438.8A CN201710115438A CN106950003B CN 106950003 B CN106950003 B CN 106950003B CN 201710115438 A CN201710115438 A CN 201710115438A CN 106950003 B CN106950003 B CN 106950003B
Authority
CN
China
Prior art keywords
probe
pressure
dynamic pressure
dimensional flow
transonic
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.)
Active
Application number
CN201710115438.8A
Other languages
Chinese (zh)
Other versions
CN106950003A (en
Inventor
马宏伟
马融
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beihang University
Original Assignee
Beihang University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beihang University filed Critical Beihang University
Priority to CN201710115438.8A priority Critical patent/CN106950003B/en
Publication of CN106950003A publication Critical patent/CN106950003A/en
Application granted granted Critical
Publication of CN106950003B publication Critical patent/CN106950003B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M10/00Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels

Abstract

The invention belongs to the technical field of pressure testing, and discloses a conical single-hole dynamic pressure probe for measuring a rotor outlet transonic three-dimensional flow field. Through calibration of the wind tunnel, the invention can measure the circumferential distribution of three-dimensional flow parameters such as pitch angle, deflection angle, total pressure, static pressure, Mach number and the like from a pressure surface to a suction surface of a transonic three-dimensional flow field with a larger positive pitch angle at a rotor outlet, and provides an actual measurement data basis for improving the performance of the rotor. Compared with the porous dynamic pressure probe for measuring the transonic three-dimensional flow field, the probe has the advantages that only 1 dynamic pressure sensor is arranged at the head part, and the probe is simple in structure, small in size and low in cost.

Description

Conical single-hole dynamic pressure probe for measuring rotor outlet transonic three-dimensional flow field
Technical Field
The invention belongs to the technical field of pressure testing, relates to a dynamic pressure measuring device of a transonic flow field, and particularly relates to a conical single-hole dynamic pressure probe for measuring a transonic three-dimensional flow field at a rotor outlet, which is suitable for measuring the transonic three-dimensional flow field with a larger positive pitch angle at the rotor outlet of an impeller machine and can be used for measuring the circumferential distribution of three-dimensional flow parameters such as an incoming flow pitch angle, a deflection angle, total pressure, static pressure, Mach number and the like from a pressure surface to a suction surface.
Background
Due to the rotation of rotors such as transonic compressors, fans, turbines and the like, a conventional steady-state pressure probe is adopted, a dynamic flow field at the outlet of the rotor cannot be truly reflected, the circumferential distribution of inflow parameters of the outlet of the rotor from a pressure surface to a suction surface cannot be measured, and a hot wire anemometer can measure a dynamic speed signal at the outlet of the rotor but cannot provide dynamic pressure information. The transonic turbine test is more hopeful to obtain the measurement data of dynamic pressure information at the rotor outlet, the transonic three-dimensional flow field at the rotor outlet generally has a larger positive pitch angle due to the action of centrifugal force, and the circumferential distribution of three-dimensional flow parameters such as the pitch angle, deflection angle, total pressure, static pressure, Mach number and the like from the pressure surface to the suction surface of the rotor outlet is hopeful to obtain the circumferential distribution of the three-dimensional flow parameters such as the pitch angle, deflection angle, total pressure, static pressure, Mach number and the like from the pressure surface.
The existing dynamic pressure probe for measuring transonic three-dimensional flow parameters at the outlet of a rotor is at least provided with 2 pressure sensing holes, and is internally provided with 2 dynamic pressure sensors, so that the size of the dynamic pressure probe is not easy to be reduced, and the cost of the dynamic pressure probe is high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: and measuring the circumferential distribution of three-dimensional flow parameters such as pitch angle, deflection angle, total pressure, static pressure, Mach number and the like from a pressure surface to a suction surface in a transonic three-dimensional flow field with a larger positive pitch angle at a rotor outlet.
Therefore, the invention provides a conical single-hole dynamic pressure probe for measuring a transonic three-dimensional flow field at a rotor outlet, compared with a porous dynamic pressure probe, the head part is only provided with 1 dynamic pressure sensor, the probe has the characteristics of simple structure, small size and low cost, and is suitable for measuring the circumferential distribution of three-dimensional flow parameters such as a pitch angle, a deflection angle, total pressure, static pressure, Mach number and the like from a pressure surface to a suction surface in the transonic three-dimensional flow field with a large positive pitch angle at the rotor outlet.
The technical solution of the invention is as follows:
1. a conical single-hole dynamic pressure probe for measuring a transonic three-dimensional flow field at an outlet of a rotor is characterized in that: the probe comprises a probe head (1) and a supporting rod (2), wherein the probe head (1) comprises a cylinder (3) and a cone (4) which share the bottom surface, a dynamic pressure sensor is packaged in the cylinder (3) and the cone (4), a pressure sensing hole (5) is formed in the side surface of the cone (4) of the probe head (1), and the pressure sensing hole (5) is communicated with the dynamic pressure sensor packaged in the probe head (1). The central line of the pressure sensing hole (5) and the axis of the cylinder (3) of the probe head (1) are on the same plane. The axis of the cylinder (3) of the probe head (1) is coincident with the axis of the probe support rod (2).
2. Furthermore, the diameter of the pressure sensing hole (5) of the probe head (1) is 0.6 mm to 1.5 mm, and the distance between the circle center of the pressure sensing hole (5) and the circumference of the bottom surface of the cone (4) is 1 mm to 5 mm.
3. Further, the diameter of the cylinder (3) of the probe head (1) is 1.5 mm to 6 mm.
4. Further, the cone angle of the cone (4) of the probe head (1) is 40-160 °.
5. Further, the cylinder (3) of the probe head (1) is 10 mm to 40 mm long.
6. Furthermore, the probe supporting rod (2) is a cylinder, a circular pipeline is arranged in the probe supporting rod, and a cable (6) of the dynamic pressure sensor packaged in the probe head (1) is led out of the tail part of the probe through the pipeline in the probe supporting rod (2).
The invention has the beneficial effects that:
through calibration of the wind tunnel, the invention can measure the circumferential distribution of three-dimensional flow parameters such as pitch angle, deflection angle, total pressure, static pressure, Mach number and the like from a pressure surface to a suction surface of a transonic three-dimensional flow field with a larger positive pitch angle at a rotor outlet, and provides an actual measurement data basis for improving the performance of the rotor. Compared with the porous dynamic pressure probe for measuring the transonic three-dimensional flow field, the probe has the advantages that only 1 dynamic pressure sensor is arranged at the head part, and the probe is simple in structure, small in size and low in cost.
Drawings
Fig. 1 is a schematic structural diagram of a conical single-hole dynamic pressure probe for measuring a rotor outlet transonic three-dimensional flow field in an embodiment of the invention.
Wherein: 1-probe head, 2-probe support rod, 3-cylinder, 4-cone, 5-pressure sensing hole, and 6-cable.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1, the embodiment introduces a conical single-hole dynamic pressure probe for measuring a rotor outlet transonic three-dimensional flow field, which includes a probe head (1) and a support rod (2), wherein the probe head (1) includes a cylinder (3) and a cone (4) sharing a common bottom surface, a dynamic pressure sensor is encapsulated inside the probe head (1), a pressure sensing hole (5) is formed in a side surface of the cone (4) of the probe head (1), and the pressure sensing hole (5) is communicated with the dynamic pressure sensor encapsulated in the probe head (1). The central line of the pressure sensing hole (5) and the axis of the cylinder (3) of the probe head (1) are on the same plane. The axis of the cylinder (3) of the probe head (1) is coincident with the axis of the probe support rod (2).
The diameter of a pressure sensing hole (5) of the probe head (1) is 0.6 mm, and the distance between the circle center of the pressure sensing hole (5) and the circumference of the bottom surface of the cone (4) is 2.1 mm.
The diameter of the cylinder (3) of the probe head (1) is 3 mm.
The cone angle of the cone (4) of the probe head (1) is 90 degrees.
The cylinder (3) of the probe head (1) is 35 mm long.
The probe supporting rod (2) is a cylinder, the diameter of the probe supporting rod is 6 mm, a circular channel is formed in the probe supporting rod, the diameter of the circular channel is 4 mm, and a cable (6) of a dynamic pressure sensor packaged in the probe head (1) is led out of the tail of the probe through a pipeline in the probe supporting rod (2).
The conical single-hole dynamic pressure probe for measuring the transonic three-dimensional flow field at the outlet of the rotor, disclosed by the embodiment of the invention, can obtain calibration data through transonic speed calibration wind tunnel calibration. When a transonic three-dimensional flow field at the outlet of the rotor is actually measured, the conical single-hole dynamic pressure probe rotates around the axis of the probe support rod, a plurality of different angular positions are placed for respective measurement, a plurality of groups of unsteady pressure data are measured by the dynamic pressure sensor arranged in the probe, the obtained transonic calibration wind tunnel calibration data are utilized for data processing, and the circumferential distribution of three-dimensional flow parameters such as a pitch angle, a deflection angle, total pressure, static pressure, Mach number and the like from a pressure surface to a suction surface in the transonic three-dimensional flow field with the rotor outlet having a larger positive pitch angle can be obtained.

Claims (1)

1. A conical single-hole dynamic pressure probe for measuring a transonic three-dimensional flow field at an outlet of a rotor is characterized in that: the probe comprises a probe head (1) and a support rod (2), wherein the probe head (1) comprises a cylinder (3) and a cone (4) which share the same bottom surface, a dynamic pressure sensor is encapsulated in the cylinder (3) and the cone (4), a pressure sensing hole (5) is formed in the side surface of the cone (4) of the probe head (1), and the pressure sensing hole (5) is communicated with the dynamic pressure sensor encapsulated in the probe head (1); the central line of the pressure sensing hole (5) and the axis of the cylinder (3) of the probe head (1) are on the same plane; the axis of the cylinder (3) of the probe head (1) is superposed with the axis of the probe support rod (2);
the probe supporting rod (2) is a cylinder, a circular pipeline is arranged in the probe supporting rod, and a cable (6) of a dynamic pressure sensor packaged in the probe head (1) is led out of the tail part of the probe through the pipeline in the probe supporting rod (2);
the diameter of a pressure sensing hole (5) of the probe head (1) is 0.6 mm to 1.5 mm, and the distance between the circle center of the pressure sensing hole (5) and the circumference of the bottom surface of the cone (4) is 1 mm to 5 mm;
the diameter of the cylinder (3) of the probe head (1) is 1.5 mm to 6 mm;
the cone angle of the cone (4) of the probe head (1) is 40-160 degrees;
the cylinder (3) of the probe head (1) is 10 mm to 40 mm long;
compared with the porous dynamic pressure probe, the conical single-hole dynamic pressure probe for measuring the transonic three-dimensional flow field at the rotor outlet only has 1 dynamic pressure sensor at the head, has the characteristics of simple structure, small size and low cost, and is suitable for measuring the circumferential distribution of three-dimensional flow parameters of pitch angle, deflection angle, total pressure, static pressure and Mach number from the pressure surface to the suction surface in the transonic three-dimensional flow field with the rotor outlet having a larger positive pitch angle.
CN201710115438.8A 2017-03-01 2017-03-01 Conical single-hole dynamic pressure probe for measuring rotor outlet transonic three-dimensional flow field Active CN106950003B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710115438.8A CN106950003B (en) 2017-03-01 2017-03-01 Conical single-hole dynamic pressure probe for measuring rotor outlet transonic three-dimensional flow field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710115438.8A CN106950003B (en) 2017-03-01 2017-03-01 Conical single-hole dynamic pressure probe for measuring rotor outlet transonic three-dimensional flow field

Publications (2)

Publication Number Publication Date
CN106950003A CN106950003A (en) 2017-07-14
CN106950003B true CN106950003B (en) 2020-11-17

Family

ID=59468077

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710115438.8A Active CN106950003B (en) 2017-03-01 2017-03-01 Conical single-hole dynamic pressure probe for measuring rotor outlet transonic three-dimensional flow field

Country Status (1)

Country Link
CN (1) CN106950003B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109540372B (en) * 2018-11-12 2021-02-09 中国飞行试验研究院 Novel multi-mode pressure measurement probe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011148094A1 (en) * 2010-05-25 2011-12-01 Turbomeca Device for multipoint acquisition/distribution of fluid, in particular probe for tapping pressure in a turbomachine air inlet
CN203940946U (en) * 2014-07-04 2014-11-12 北京航空航天大学 A kind of five-hole probe for full flow directional detection
CN105716788A (en) * 2015-11-02 2016-06-29 北京航空航天大学 Three-hole transonic speed pressure probe
CN105716779A (en) * 2015-11-02 2016-06-29 北京航空航天大学 Dynamic pressure blade type probe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011148094A1 (en) * 2010-05-25 2011-12-01 Turbomeca Device for multipoint acquisition/distribution of fluid, in particular probe for tapping pressure in a turbomachine air inlet
CN203940946U (en) * 2014-07-04 2014-11-12 北京航空航天大学 A kind of five-hole probe for full flow directional detection
CN105716788A (en) * 2015-11-02 2016-06-29 北京航空航天大学 Three-hole transonic speed pressure probe
CN105716779A (en) * 2015-11-02 2016-06-29 北京航空航天大学 Dynamic pressure blade type probe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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;蒋浩康 等;《航空动力学报》;19920401;正文第5页最后一段、第6页,图6 *

Also Published As

Publication number Publication date
CN106950003A (en) 2017-07-14

Similar Documents

Publication Publication Date Title
CN105716779B (en) Dynamic pressure blade profile probe
CN106950003B (en) Conical single-hole dynamic pressure probe for measuring rotor outlet transonic three-dimensional flow field
CN106885649B (en) Dynamic temperature and pressure combined probe for measuring subsonic two-dimensional unsteady flow field
CN106940240B (en) Conical double-hole dynamic pressure probe for measuring rotor outlet transonic three-dimensional flow
CN102520206A (en) Dynamic air velocity transducer
CN106768597A (en) A kind of cylinder single hole dynamic pressure probe for measuring rotor outlet two-dimensional flow field
CN106840511B (en) Cone head four-hole dynamic pressure probe for measuring high subsonic three-dimensional unsteady flow
CN106908187B (en) Dynamic pressure and temperature probe for measuring two-dimensional flow parameters of incoming flow in any direction
CN106950006B (en) Hemispherical head four-hole dynamic pressure probe for measuring low-speed three-dimensional unsteady flow
CN106989895A (en) A kind of 12 hole dynamic pressure probes for measuring three-dimensional non-steady complex flowfield
CN107014434B (en) Cone head steady-state temperature and pressure combined probe for measuring high subsonic three-dimensional flow field
CN106768827A (en) A kind of steady temperature force combination probe for measuring transonic speed two-dimensional flow field
CN106768826B (en) Dynamic temperature and pressure combined probe for measuring ultrasonic two-dimensional unsteady flow field
CN106840594B (en) A kind of four hole dynamic pressure probes measuring transonic speed three-dimensional non-steady flow field
CN106885683B (en) Hemispherical head twelve-hole steady-state pressure probe for measuring three-dimensional complex flow field
CN203519070U (en) Turbine and turbine flowmeter
CN106885680A (en) A kind of hole dynamic pressure probe of wedge head four for measuring subsonic speed three dimensional unsteady flow
CN106885681A (en) A kind of monocline hole dynamic pressure probe for measuring rotor outlet subsonics three-dimensional flow field
CN106940241B (en) Steady-state temperature and pressure combined probe for measuring transonic three-dimensional flow field
CN106871968B (en) Probe for measuring total pressure of total temperature of multiple points of subsonic flow field
CN106840272B (en) Dynamic temperature and pressure combined probe for measuring transonic three-dimensional unsteady flow field
CN106908191B (en) Dynamic temperature and pressure combined probe for measuring transonic two-dimensional unsteady flow field
CN108680322B (en) Centrifugal impeller vibration damping test system and method
CN106989896B (en) Dynamic temperature and pressure combined probe for measuring subsonic three-dimensional unsteady flow field
CN106940242B (en) Three-hole dynamic pressure probe for measuring transonic two-dimensional unsteady flow field

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant