CN106840272B - Dynamic temperature and pressure combined probe for measuring transonic three-dimensional unsteady flow field - Google Patents
Dynamic temperature and pressure combined probe for measuring transonic three-dimensional unsteady flow field Download PDFInfo
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- CN106840272B CN106840272B CN201710247056.0A CN201710247056A CN106840272B CN 106840272 B CN106840272 B CN 106840272B CN 201710247056 A CN201710247056 A CN 201710247056A CN 106840272 B CN106840272 B CN 106840272B
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Abstract
本发明属于温度、压力测试技术领域，公开了一种测量跨音三维非定常流场的动态温度压力组合探针，包括探针头部、支杆，探针头部为楔顶棱柱状结构，迎风面包括楔顶斜平面、正平面、左侧平面和右侧平面，背风面为圆柱弧面，其内封装4支动态压力传感器、1支动态温度传感器，温度传感器头部露出楔顶斜面，在探针头部迎风面开有4个互不相通的压力感受孔，分别与4个压力传感器连通，传感器线缆通过支杆内通道引出探针尾部。与现有流场测试探针相比，本发明经过校准风洞标定，能同时测得跨音来流温度、总压、静压、偏转角、俯仰角、马赫数和三维速度随时间的变化，为叶轮机实验提供了一种高效、准确、全面测量跨音三维非定常流场的手段。
The invention belongs to the technical field of temperature and pressure testing, and discloses a dynamic temperature and pressure combined probe for measuring transonic three-dimensional unsteady flow field. The windward side includes the wedge top inclined plane, the front plane, the left plane and the right plane, and the leeward side is a cylindrical arc surface, which encapsulates 4 dynamic pressure sensors and 1 dynamic temperature sensor, and the head of the temperature sensor is exposed on the wedge top inclined plane. On the windward side of the probe head, there are 4 pressure sensing holes that are not connected to each other, which are respectively connected with the 4 pressure sensors. Compared with the existing flow field test probe, the invention can simultaneously measure the temperature, total pressure, static pressure, deflection angle, pitch angle, Mach number and three-dimensional velocity of the transonic flow with time after calibration in the wind tunnel. , which provides an efficient, accurate and comprehensive measure of transonic three-dimensional unsteady flow field for turbine experiments.
Description
Technical Field
The invention belongs to the technical field of temperature and pressure testing, relates to a dynamic temperature and dynamic pressure measuring device of a transonic three-dimensional unsteady flow field, and particularly relates to a dynamic temperature and pressure combined probe for measuring the transonic three-dimensional unsteady flow field, which is suitable for testing transonic three-dimensional dynamic flow fields at an inlet, an outlet and an interstage of an impeller machine.
Background
The aerodynamic performance of an aircraft engine compressor and a fan can be seriously influenced by the dynamic temperature and dynamic pressure combined distortion of an inlet flow field, even the engine stall and surge are caused, the influence of the dynamic temperature and dynamic pressure combined distortion is researched, and the measurement of transonic three-dimensional dynamic flow fields of transonic compressor inlets, interstage and rotor outlets with dynamic temperature and dynamic pressure combined distortion is urgently needed. At present, a dynamic pressure sensor can only be used for measuring dynamic pressure signals, a small inertia thermocouple is used for measuring dynamic temperature signals, a conventional steady-state pressure probe is used for measuring total pressure distribution, more three-dimensional unsteady flow field information cannot be provided, and a more targeted measuring means is urgently needed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problem of insufficient measuring means in experimental research on influence of dynamic temperature and dynamic pressure combined distortion, the invention provides the dynamic temperature and pressure combined probe for measuring the transonic three-dimensional unsteady flow field, which can simultaneously measure the temperature, total pressure, static pressure, deflection angle, pitch angle, Mach number and change of three-dimensional velocity components of transonic incoming flow along with time compared with the existing flow field test probe.
The technical solution of the invention is as follows:
1. a dynamic temperature and pressure combined probe for measuring a transonic three-dimensional unsteady flow field is characterized in that: the probe comprises a probe head (1) and a support rod (2), wherein the probe head (1) is of a wedge-top prismatic structure, 4 dynamic pressure sensors are packaged in the probe head, 1 dynamic temperature sensor is installed in the probe head, the windward side of the probe head (1) during probe measurement comprises a wedge-top inclined plane (3), a front plane (4), a left side plane (5) and a right side plane (6) which are symmetrical, and the leeward side is a cylindrical cambered surface (7); the head (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane; a pressure sensing hole is formed in a wedge top inclined plane (3) of a probe head (1) and is an upper hole (9), 1 pressure sensing hole is formed in each of a front plane (4), a symmetrical left plane (5) and a right plane (6) of the probe head (1) and is a middle hole (10), a left hole (11) and a right hole (12), and the 4 pressure sensing holes which are not communicated with each other are respectively communicated with 4 dynamic pressure sensors in the probe head (1).
2. Furthermore, the probe supporting rod (2) is a cylinder, and a circular pipeline is arranged in the probe supporting rod.
3. Furthermore, the axis of the cylindrical cambered surface (7) of the probe head (1) is superposed with the axis of the probe supporting rod (2).
4. Furthermore, the center line of the head (8) of the dynamic temperature sensor, which is exposed out of the wedge top inclined plane, of the probe head (1), the center line of the upper hole (9), the center line of the middle hole (10) and the axis of the probe support rod (2) are on the same plane, the left plane (5) and the right plane (6) are symmetrical along the plane, and the left hole (11) and the right hole (12) are symmetrically distributed along the plane.
5. Furthermore, the front plane (4) of the probe head (1) is 1-2 mm wide, and the included angle between the left plane (5) and the right plane (6) is 30-90 degrees.
6. Furthermore, the included angle between the wedge top inclined plane (3) of the probe head (1) and the axis of the probe support rod (2) is 28-54 degrees.
7. Furthermore, the dynamic temperature sensor is arranged at the inner rear part of the wedge top prism-shaped structure of the probe head part (1), and the head part (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane by 0.5 mm to 3 mm.
8. Furthermore, an upper hole (9) in the wedge top inclined plane (3) of the probe head (1) is arranged at the front lower part of the temperature sensor head (8), the diameter of the upper hole (9) is 0.6 mm to 1.5 mm, and the distance between the circle center and the bottom edge of the wedge top inclined plane (3) is 1 mm to 5 mm.
9. Furthermore, the diameters of a middle hole (10), a left hole (11) and a right hole (12) of the probe head (1) are 0.6 mm to 1.5 mm, and the distance between the center of the middle hole (10) and the bottom edge of the wedge top inclined plane (3) is 1 mm to 5 mm.
10. Furthermore, cables (13) of the dynamic pressure sensor and the dynamic temperature sensor are led out from the tail part of the probe through pipelines in the probe supporting rod (2).
The invention has the beneficial effects that:
compared with the existing transonic flow field test probe, the transonic three-dimensional unsteady flow field test probe can simultaneously measure the transonic incoming flow temperature, the total pressure, the static pressure, the deflection angle, the pitch angle, the Mach number and the change of the three-dimensional speed along with time through calibration of the wind tunnel, and provides a means for efficiently, accurately and comprehensively measuring the transonic three-dimensional unsteady flow field for a turbine experiment.
Drawings
Fig. 1 is a schematic structural diagram of a dynamic temperature and pressure combination probe for measuring a transonic three-dimensional unsteady flow field in an embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a view from direction a of fig. 2.
Wherein: 1-probe head, 2-probe support rod, 3-wedge top inclined plane, 4-front plane, 5-left side plane, 6-right side plane, 7-cylindrical arc surface, 8-dynamic temperature sensor head, 9-upper hole, 10-middle hole, 11-left hole, 12-right hole and 13-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 dynamic temperature and pressure combined probe for measuring a transonic three-dimensional unsteady flow field, which includes a probe head (1) and a support rod (2), wherein the probe head (1) is of a wedge-top prism-shaped structure, the diameter of an external circle is 6 mm, the height of the probe head (1) is 30 mm, 4 dynamic pressure sensors are packaged in the probe head, 1 dynamic temperature sensor is installed in the probe head, a windward side of the probe head (1) during probe measurement includes a wedge-top inclined plane (3), a front plane (4), a symmetrical left plane (5) and a right plane (6), and a leeward side is a cylindrical arc surface (7); the head (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane; a pressure sensing hole is formed in a wedge top inclined plane (3) of a probe head (1) and is an upper hole (9), 1 pressure sensing hole is formed in each of a front plane (4), a symmetrical left plane (5) and a right plane (6) of the probe head (1) and is a middle hole (10), a left hole (11) and a right hole (12), and the 4 pressure sensing holes which are not communicated with each other are respectively communicated with 4 dynamic pressure sensors in the probe head (1).
The probe supporting rod (2) is a cylinder with the diameter of 8 mm, and a circular channel with the diameter of 5 mm is arranged in the probe supporting rod.
The axis of the cylindrical cambered surface (7) of the probe head (1) is superposed with the axis of the probe supporting rod (2).
The center line of the head (8) of the dynamic temperature sensor, which is exposed out of the wedge top inclined plane, of the probe head (1), the center line of the upper hole (9), the center line of the middle hole (10) and the axis of the probe support rod (2) are on the same plane, the left plane (5) and the right plane (6) are symmetrical along the plane, and the left hole (11) and the right hole (12) are symmetrically distributed along the plane.
The front plane (4) of the probe head (1) is 1 mm wide, and the included angle between the left plane (5) and the right plane (6) is 40 degrees. The circle centers of the left hole (11), the right hole (12) and the middle hole (10) are on the same plane, the distance between the circle center of the left hole (11) and the left side of the front plane (4) is 3 mm, and the distance between the circle center of the right hole (12) and the right side of the front plane (4) is 3 mm.
The included angle between the wedge top inclined plane (3) of the probe head (1) and the axis of the probe supporting rod (2) is 40 degrees.
The dynamic temperature sensor is arranged at the inner rear part of the wedge top prism-shaped structure of the probe head (1), and the head (8) of the dynamic temperature sensor is exposed out of the wedge top inclined plane by 1 mm.
An upper hole (9) on the wedge top inclined plane (3) of the probe head (1) is arranged at the front lower part of the temperature sensor head (8), the diameter of the upper hole (9) is 0.6 mm, and the distance between the circle center and the bottom edge of the wedge top inclined plane (3) is 1 mm.
The diameters of a middle hole (10), a left hole (11) and a right hole (12) of the probe head (1) are 0.6 mm, and the distance between the center of the middle hole (10) and the bottom edge of the wedge top inclined plane (3) is 1 mm.
The cables (13) of the dynamic pressure sensor and the dynamic temperature sensor are led out from the tail part of the probe through a pipeline in the probe supporting rod (2).
The dynamic temperature and pressure combined probe for measuring the transonic three-dimensional unsteady flow field introduced in the embodiment of the invention can obtain calibration data through transonic speed calibration wind tunnel calibration. When a transonic three-dimensional unsteady flow field is actually measured, 4 dynamic pressure sensors and 1 dynamic temperature sensor of the dynamic temperature and pressure combined probe simultaneously measure unsteady pressure and unsteady temperature data respectively sensed, the obtained transonic calibration wind tunnel calibration data is utilized to perform data processing, and the change of transonic incoming flow temperature, total pressure, static pressure, deflection angle, pitch angle, Mach number and three-dimensional speed along with time can be obtained.
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| CN201710247056.0A CN106840272B (en) | 2017-04-17 | 2017-04-17 | Dynamic temperature and pressure combined probe for measuring transonic three-dimensional unsteady flow field |
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| CN106840272A CN106840272A (en) | 2017-06-13 |
| CN106840272B true CN106840272B (en) | 2020-05-22 |
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Citations (5)
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| WO1994020014A1 (en) * | 1993-03-05 | 1994-09-15 | Sahagen Armen N | Probe for monitoring a fluid medium |
| DE4337402A1 (en) * | 1993-10-26 | 1995-04-27 | Mannesmann Ag | Probe for measuring pressure and temperature profiles |
| CN103884467A (en) * | 2014-04-14 | 2014-06-25 | 中国科学院工程热物理研究所 | Plasma pressure probe and system for measuring pressure by utilizing plasma pressure probe |
| CN104048808A (en) * | 2013-03-14 | 2014-09-17 | 中国科学院工程热物理研究所 | Dynamic entropy probe |
| CN106404409A (en) * | 2016-11-16 | 2017-02-15 | 中国科学院工程热物理研究所 | Probe assembly suitable for strong-shearing unsteady flow test of aeroengine |
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- 2017-04-17 CN CN201710247056.0A patent/CN106840272B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994020014A1 (en) * | 1993-03-05 | 1994-09-15 | Sahagen Armen N | Probe for monitoring a fluid medium |
| DE4337402A1 (en) * | 1993-10-26 | 1995-04-27 | Mannesmann Ag | Probe for measuring pressure and temperature profiles |
| CN104048808A (en) * | 2013-03-14 | 2014-09-17 | 中国科学院工程热物理研究所 | Dynamic entropy probe |
| CN103884467A (en) * | 2014-04-14 | 2014-06-25 | 中国科学院工程热物理研究所 | Plasma pressure probe and system for measuring pressure by utilizing plasma pressure probe |
| CN106404409A (en) * | 2016-11-16 | 2017-02-15 | 中国科学院工程热物理研究所 | Probe assembly suitable for strong-shearing unsteady flow test of aeroengine |
Non-Patent Citations (2)
| Title |
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| 基于数字信号处理功能实现的动态探针研制;姚君;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》;20160215(第2期);正文第4-27页 * |
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Application publication date: 20170613 Assignee: Yangcan (Beijing) Technology Development Co.,Ltd. Assignor: BEIHANG University Contract record no.: X2025980004930 Denomination of invention: A dynamic temperature pressure combination probe for measuring transonic three-dimensional unsteady flow field Granted publication date: 20200522 License type: Common License Record date: 20250310 |