A Dynamic Temperature-Pressure Combined Probe for Measuring Subsonic Two-dimensional Unsteady Flow Field
A technology of unsteady flow field and dynamic temperature, which is applied in the direction of measuring fluid pressure, thermometer, heat measurement, etc., can solve the problems of complicated operation, high test cost and long time, so as to weaken the interference of flow field and reduce the test time. Effects of cost and quantity reduction
Active Publication Date: 2020-05-12
BEIHANG UNIV
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Problems solved by technology
[0004] The technical problem mainly solved by the present invention is: in view of the current dynamic test of the unsteady flow field of the turbomachinery, the pressure probe and the temperature probe are used separately, the test cost is high, the test time is long, and the operation is complicated. The present invention provides a A dynamic temperature and pressure combination probe for measuring subsonic two-dimensional unsteady flow field, which can simultaneously measure the total temperature, total pressure, Mach number and flow direction of two-dimensional unsteady flow field with a single probe, which provides a solid foundation for turbine tests An Efficient, Accurate and Comprehensive Dynamic Test Method for Measuring Two-dimensional Subsonic Unsteady Flow Field
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[0016] In the following, the dynamic temperature and pressure combination probe for measuring subsonic two-dimensional unsteady flow field of the present invention will be described in detail in conjunction with the accompanying drawings, so that the characteristics and advantages of the present invention can be more easily understood by those skilled in the art. Therefore, the protection scope of the present invention can be defined more clearly.
[0017] as attached figure 1 As shown, this embodiment introduces a dynamic temperature and pressure combination probe for measuring subsonic two-dimensional unsteady flow field, including probe support rod 1, probe head 2, transition section 3, and pressure sensor cable 4 , the temperature sensor cable 5 and the temperature sensor 9, the probe rod 1 and the probe head 2 are cylindrical, the probe head 2 is installed on the probe rod 1 through the transition section 3, and the probe head There are three pressure sensing holes on th...
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The invention belongs to the technical field of impeller machinery testing, and discloses a dynamic temperature and pressure combination probe for measuring a subsonic two-dimensional unsteady flow field, including a probe support rod 1, a probe head 2, a transition section 3, and a pressure sensor line Cable 4, temperature sensor cable 5 and temperature sensor 9, the probe rod 1 and the probe head 2 are cylindrical, the probe head 2 is installed on the probe rod 1 through the transition section 3, and the probe There are three pressure sensing holes on the cylindrical surface of the needle head 2, and the three pressure sensing holes are respectively connected to the three pressure sensors packaged in the probe head 2, and a temperature sensor 9 is installed on the bottom surface of the front end of the probe head. The pressure sensor cable and the temperature sensor cable are led out from the tail of the probe through the inner channel of the probe support rod 1 . Compared with the existing probe testing technology, the invention is calibrated and can measure the total temperature, total pressure, Mach number and flow direction of the two-dimensional subsonic flow field, and can be used for the test of the impeller machinery.
Description
technical field [0001] The invention relates to the field of turbomachinery testing, in particular to a pressure-temperature combined probe for two-dimensional flow field measurement. The invention can measure the total temperature, total pressure, Mach number and flow direction of the two-dimensional unsteady flow field, and provides an efficient, accurate and comprehensive method for measuring the dynamic parameters of the two-dimensional subsonic unsteady flow field for the turbine test means. Background technique [0002] Pressure probes and temperature probes are widely used in flow field measurement. Pressure probes can be used to measure parameters such as pressure, Mach number, and flow direction of the flow field. Commonly used pressure probes include single-hole needles, three-hole needles, five-hole needles, and seven-hole needles. The temperature probe can be used to measure the temperature of the flow field, and the commonly used ones are thermocouple type and...
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IPC IPC(8): G01L11/00G01K7/02G01K7/16G01P5/00G01P13/00
CPCG01K7/02G01K7/16G01L11/00G01P5/00G01P13/0006
Inventor 马宏伟姜逸轩
Owner BEIHANG UNIV