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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Abstract
本发明属于压力测试技术领域，公开了一种测量转子出口亚音三维流场的单斜孔动态压力探针，包括探针头部、支杆，探针头部为楔顶圆柱体，其内部封装一个动态压力传感器，在探针头部楔顶的斜面上，开有一个压力感受孔，该孔与探针头部内的动态压力传感器连通，传感器线缆通过探针支杆内通道引出探针尾部。本发明经过校准风洞标定，可以测出转子出口具有较大正俯仰角的亚音速三维流场中，俯仰角、偏转角、总压、静压和马赫数等三维流动参数从压力面到吸力面的周向分布，为改进转子性能提供实测数据依据。与测量亚音速三维流场的多孔动态压力探针相比，头部只安装了1个动态压力传感器，具有结构简单、尺寸小、成本低的优点。
The invention belongs to the technical field of pressure testing, and discloses a dynamic pressure probe with a single inclined hole for measuring the subsonic three-dimensional flow field at the outlet of a rotor, which includes a probe head and a support rod. A dynamic pressure sensor is packaged, and a pressure sensing hole is opened on the inclined surface of the wedge top of the probe head, which communicates with the dynamic pressure sensor in the probe head. needle tail. The invention is calibrated by a wind tunnel, and can measure the three-dimensional flow parameters such as pitch angle, deflection angle, total pressure, static pressure and Mach number in the subsonic three-dimensional flow field with a relatively large positive pitch angle at the rotor outlet from the pressure surface to the suction surface. The circumferential distribution of the rotor provides the basis of measured data for improving the performance of the rotor. Compared with the porous dynamic pressure probe for measuring subsonic three-dimensional flow field, only one dynamic pressure sensor is installed in the head, which has the advantages of simple structure, small size and low cost.
Description
技术领域technical field
本发明属于压力测试技术领域，涉及亚音速流场的动态压力测量装置，具体涉及一种测量转子出口亚音三维流场的单斜孔动态压力探针，适用于测量叶轮机械亚音速转子出口具有较大正俯仰角的三维流场，能够测得来流俯仰角、偏转角、总压、静压和马赫数等三维流动参数从压力面到吸力面的周向分布。The invention belongs to the technical field of pressure testing, and relates to a dynamic pressure measuring device for a subsonic flow field, in particular to a single inclined hole dynamic pressure probe for measuring a subsonic three-dimensional flow field at a rotor outlet, which is suitable for measuring the subsonic rotor outlet of a turbomachinery. The three-dimensional flow field with a large positive pitch angle can measure the circumferential distribution of three-dimensional flow parameters such as incoming flow pitch angle, deflection angle, total pressure, static pressure and Mach number from the pressure surface to the suction surface.
背景技术Background technique
由于压气机、风扇、涡轮、压缩机、风机、泵等转子的旋转，采用常规的稳态压力探针，无法测量出转子出口的动态流场，不能分辨出转子出口从压力面到吸力面来流参数的周向分布，热线风速仪能够测量出转子出口的动态速度信号，但不能提供动态压力信息。叶轮机试验更希望获得转子出口含有动态压力信息的测量数据，对于转子出口亚音三维流场，由于离心力的作用，一般具有较大的正俯仰角，希望获得转子出口俯仰角、偏转角、总压、静压和马赫数等三维流动参数从压力面到吸力面的周向分布，用于验证转子的设计和流场诊断，以便改进机器性能。Due to the rotation of the rotors of compressors, fans, turbines, compressors, blowers, pumps, etc., it is impossible to measure the dynamic flow field of the rotor outlet by using a conventional steady-state pressure probe, and it is impossible to distinguish the flow from the pressure surface to the suction surface of the rotor outlet. According to the circumferential distribution of flow parameters, the hot wire anemometer can measure the dynamic velocity signal at the rotor outlet, but it cannot provide dynamic pressure information. In the turbine test, it is more desirable to obtain measurement data containing dynamic pressure information at the rotor outlet. For the subsonic three-dimensional flow field at the rotor outlet, due to the centrifugal force, it generally has a large positive pitch angle. It is hoped to obtain the rotor outlet pitch angle, deflection angle, total Circumferential distribution of 3D flow parameters such as pressure, static pressure and Mach number from the pressure side to the suction side is used to validate rotor design and flow field diagnostics for improved machine performance.
现有的测量转子出口亚音速三维流动参数的动态压力探针至少开有2个压力感受孔，内装有2个动态压力传感器，一方面动态压力探针尺寸不容易做得小，另一方面，动态压力探针成本嫌高。The existing dynamic pressure probes for measuring subsonic three-dimensional flow parameters at the outlet of the rotor have at least two pressure sensing holes, and two dynamic pressure sensors are installed inside. On the one hand, the size of the dynamic pressure probes is not easy to make small; The cost of dynamic pressure probes is too high.
发明内容Contents of the invention
本发明要解决的技术问题是：测量叶轮机转子出口具有较大正俯仰角的亚音速三维流场中，俯仰角、偏转角、总压、静压和马赫数等三维流动参数从压力面到吸力面的周向分布。The technical problem to be solved by the present invention is to measure the three-dimensional flow parameters such as pitch angle, deflection angle, total pressure, static pressure and Mach number in the subsonic three-dimensional flow field with a large positive pitch angle at the outlet of the turbine rotor from the pressure surface to the suction force. Circumferential distribution of the surface.
为此，本发明提供了一种测量转子出口亚音三维流场的单斜孔动态压力探针，与多孔动态压力探针相比，探针头部只安装了1个动态压力传感器，相对具有结构简单、尺寸小、成本低的特点，适合于测量亚音速转子出口具有较大正俯仰角的三维流场中，俯仰角、偏转角、总压、静压和马赫数等三维流动参数从压力面到吸力面的周向分布。For this reason, the present invention provides a single inclined hole dynamic pressure probe for measuring the subsonic three-dimensional flow field at the outlet of the rotor. Compared with the porous dynamic pressure probe, only one dynamic pressure sensor is installed on the probe head, which is relatively The structure is simple, the size is small, and the cost is low. It is suitable for measuring the three-dimensional flow field with a large positive pitch angle at the outlet of the subsonic rotor. Circumferential distribution to the suction surface.
本发明的技术解决方案是：Technical solution of the present invention is:
1、一种测量转子出口亚音三维流场的单斜孔动态压力探针，其特征在于：包括探针头部(1)、支杆(2),所述探针头部(1)为楔顶圆柱体，其内部封装一个动态压力传感器，在探针头部(1)楔顶的斜面(3)上，开有一个压力感受孔(4)，压力感受孔(4)与探针头部(1)装有的那个动态压力传感器连通。压力感受孔(4)的中心线与探针头部(1)圆柱体的轴线在同一个平面上。探针头部(1)圆柱体的轴线与探针支杆(2)的轴线重合。1. A single inclined hole dynamic pressure probe for measuring the subsonic three-dimensional flow field at the outlet of the rotor, characterized in that it includes a probe head (1) and a support rod (2), and the probe head (1) is A wedge-top cylinder, which encapsulates a dynamic pressure sensor inside, has a pressure-sensing hole (4) on the slope (3) of the wedge-top of the probe head (1), and the pressure-sensing hole (4) is connected with the probe head The dynamic pressure sensor installed in part (1) is connected. The center line of the pressure sensing hole (4) is on the same plane as the axis of the cylinder of the probe head (1). The axis of the cylinder of the probe head (1) coincides with the axis of the probe rod (2).
2、进一步，所述探针头部(1)压力感受孔(4)的直径为0.6毫米至1.5毫米，压力感受孔(4)的圆心与探针头部(1)楔顶斜面(3)最低点的距离为1毫米至5毫米。2. Further, the diameter of the pressure sensing hole (4) of the probe head (1) is 0.6 mm to 1.5 mm, and the center of the pressure sensing hole (4) is in contact with the wedge top slope (3) of the probe head (1). The distance between the lowest point is 1 mm to 5 mm.
3、进一步，所述探针头部(1)圆柱体的直径为1.5毫米至6毫米。3. Further, the diameter of the cylinder of the probe head (1) is 1.5 mm to 6 mm.
4、进一步，所述探针头部(1)楔顶斜面(3)与探针头部(1)圆柱体轴线的夹角为25°至54°。4. Further, the included angle between the wedge top slope (3) of the probe head (1) and the cylinder axis of the probe head (1) is 25° to 54°.
5、进一步，所述探针头部(1)的圆柱体长10毫米至40毫米。5. Further, the cylinder of the probe head (1) is 10 mm to 40 mm long.
6、进一步，所述的探针支杆(2)为圆柱体，其内部开有圆型管道，探针头部(1)内封装的动态压力传感器的线缆(5)通过探针支杆(2)内的管道引出探针尾部。6. Further, the probe support rod (2) is a cylinder with a circular pipe inside, and the cable (5) of the dynamic pressure sensor packaged in the probe head (1) passes through the probe support rod The pipe in (2) leads to the tail of the probe.
本发明的有益效果是：The beneficial effects of the present invention are:
本发明经过校准风洞标定，可以测出转子出口具有较大正俯仰角的亚音速三维流场中，俯仰角、偏转角、总压、静压和马赫数等三维流动参数从压力面到吸力面的周向分布，为改进转子性能提供实测数据依据。与测量亚音速三维流场的多孔动态压力探针相比，头部只安装了1个动态压力传感器，具有结构简单、尺寸小、成本低的优点。The invention is calibrated by a wind tunnel, and can measure the three-dimensional flow parameters such as pitch angle, deflection angle, total pressure, static pressure and Mach number in the subsonic three-dimensional flow field with a relatively large positive pitch angle at the rotor outlet from the pressure surface to the suction surface. The circumferential distribution of the rotor provides the basis of measured data for improving the performance of the rotor. Compared with the porous dynamic pressure probe for measuring subsonic three-dimensional flow field, only one dynamic pressure sensor is installed in the head, which has the advantages of simple structure, small size and low cost.
附图说明Description of drawings
图1是本发明实施例中的测量转子出口亚音三维流场的单斜孔动态压力探针的结构示意图。Fig. 1 is a schematic diagram of the structure of a single inclined hole dynamic pressure probe for measuring the subsonic three-dimensional flow field at the outlet of the rotor in an embodiment of the present invention.
图2是图1的左侧视图。Fig. 2 is a left side view of Fig. 1 .
图3是图2的A向视图。Fig. 3 is a view along the direction A of Fig. 2 .
其中：1-探针头部，2-探针支杆，3-斜面，4-压力感受孔，5-线缆。Among them: 1-probe head, 2-probe support rod, 3-incline, 4-pressure sensing hole, 5-cable.
具体实施方式detailed description
下面结合附图和具体实施例对本发明进行详细阐述。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
如图1所示，本实施例中介绍了一种测量转子出口亚音三维流场的单斜孔动态压力探针，包括探针头部(1)、支杆(2)，探针头部(1)为楔顶圆柱体，其内部封装一个动态压力传感器，在探针头部(1)楔顶的斜面(3)上，开有一个压力感受孔(4)，压力感受孔(4)与探针头部(1)装有的那个动态压力传感器连通。压力感受孔(4)的中心线与探针头部(1)圆柱体的轴线在同一个平面上。探针头部(1)圆柱体的轴线与探针支杆(2)的轴线重合。As shown in Figure 1, this embodiment introduces a single inclined hole dynamic pressure probe for measuring the subsonic three-dimensional flow field at the rotor outlet, including a probe head (1), a support rod (2), and a probe head (1) is a cylinder with a wedge top, and a dynamic pressure sensor is encapsulated inside it. On the inclined surface (3) of the wedge top of the probe head (1), there is a pressure sensing hole (4). The pressure sensing hole (4) It communicates with the dynamic pressure sensor mounted on the probe head (1). The center line of the pressure sensing hole (4) is on the same plane as the axis of the cylinder of the probe head (1). The axis of the cylinder of the probe head (1) coincides with the axis of the probe rod (2).
探针头部(1)压力感受孔(4)的直径为0.6毫米，压力感受孔(4)的圆心与探针头部(1)楔顶斜面(3)最低点的距离为2.1毫米。The diameter of the probe head (1) pressure sensing hole (4) is 0.6 millimeters, and the distance between the center of the pressure sensing hole (4) and the lowest point of the probe head (1) wedge top slope (3) is 2.1 millimeters.
探针头部(1)圆柱体的直径为3毫米，长30毫米。The cylinder of the probe head (1) has a diameter of 3 mm and a length of 30 mm.
探针头部(1)楔顶斜面(3)与探针头部(1)圆柱体轴线的夹角为45°。The included angle between the wedge top slope (3) of the probe head (1) and the cylinder axis of the probe head (1) is 45°.
探针支杆(2)为圆柱体，直径6毫米，其内部开有圆型通道，直径4毫米，探针头部(1)内封装的动态压力传感器的线缆(5)通过探针支杆(2)内的管道引出探针尾部。The probe support rod (2) is a cylinder with a diameter of 6 mm, and a circular channel with a diameter of 4 mm is opened inside it. The cable (5) of the dynamic pressure sensor packaged in the probe head (1) passes through the probe support rod (2). A pipe in the rod (2) leads to the end of the probe.
本发明实施例中介绍的测量转子出口亚音三维流场的单斜孔动态压力探针，经过亚音速校准风洞标定，可以获得标定数据。实际测量转子出口亚音速三维流场时，该单斜孔动态压力探针绕探针支杆轴线转动，放置几个不同角向位置，分别进行测量，由探针内装的那支动态压力传感器测得几组非定常压力数据，利用获得的亚音速校准风洞标定数据，进行数据处理，可以获得转子出口具有较大正俯仰角的亚音速三维流场中，俯仰角、偏转角、总压、静压和马赫数等三维流动参数从压力面到吸力面的周向分布。The single inclined hole dynamic pressure probe introduced in the embodiment of the present invention for measuring the subsonic three-dimensional flow field at the outlet of the rotor can obtain calibration data after calibration in a subsonic calibration wind tunnel. When actually measuring the subsonic three-dimensional flow field at the outlet of the rotor, the dynamic pressure probe with a single inclined hole rotates around the axis of the probe rod, and is placed in several different angular positions for measurement respectively. The dynamic pressure sensor installed in the probe measures Several sets of unsteady pressure data are obtained, and the obtained subsonic calibration wind tunnel calibration data is used for data processing to obtain the subsonic three-dimensional flow field with a large positive pitch angle at the rotor outlet, the pitch angle, deflection angle, total pressure, static The circumferential distribution of three-dimensional flow parameters such as pressure and Mach number from the pressure surface to the suction surface.
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Cited By (7)
| 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 |
| CN111089702A (en) * | 2020-01-20 | 2020-05-01 | 北京航空航天大学 | Probe for measuring full parameters of subsonic three-dimensional steady-state flow field |
| 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 |
| CN113551868A (en) * | 2021-07-22 | 2021-10-26 | 北京航空航天大学 | A probe for measuring the three-dimensional dynamic boundary layer of the hub between the rotating and static fan |
| CN113670564A (en) * | 2021-07-22 | 2021-11-19 | 北京航空航天大学 | Combined probe and method for measuring flow field of interstage tip region of small compressor |
| CN118670598A (en) * | 2024-06-27 | 2024-09-20 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Probe for supersonic velocity airflow pulsation pressure measurement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63213612A (en) * | 1987-02-27 | 1988-09-06 | Nippon Steel Corp | Probe device 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 |
-
2017
- 2017-03-02 CN CN201710118903.3A patent/CN106885681A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63213612A (en) * | 1987-02-27 | 1988-09-06 | Nippon Steel Corp | Probe device 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)
| 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》 * |
| 蒋浩康当: "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》 * |
Cited By (10)
| 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 |
| CN111089702A (en) * | 2020-01-20 | 2020-05-01 | 北京航空航天大学 | Probe for measuring full parameters of subsonic three-dimensional steady-state flow field |
| CN111677560A (en) * | 2020-06-05 | 2020-09-18 | 中国航发沈阳发动机研究所 | Rotor blade shifting structure |
| CN113551868A (en) * | 2021-07-22 | 2021-10-26 | 北京航空航天大学 | A probe for measuring the three-dimensional dynamic boundary layer of the hub between the rotating and static fan |
| CN113670564A (en) * | 2021-07-22 | 2021-11-19 | 北京航空航天大学 | Combined probe and method for measuring flow field of interstage tip region of small compressor |
| 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 |
| CN118670598A (en) * | 2024-06-27 | 2024-09-20 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Probe for supersonic velocity airflow pulsation pressure measurement |
| CN118670598B (en) * | 2024-06-27 | 2024-10-22 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | A probe for measuring supersonic airflow pulsation pressure |
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