Probe for measuring whole parameters of transonic three-dimensional steady-state flow field

Abstract

The invention belongs to the technical field of flow field testing, and particularly relates to a probe for measuring whole parameters of a transonic three-dimensional steady-state flow field. The probe comprises a probe head, a temperature sensor, convection heat exchange holes, a heat insulation sealing element, a temperature sensor cable lead-out channel, a pressure measuring hole, a pressure guiding pipe channel, a probe support, a pressure guiding pipe and a temperature sensor cable, wherein the probe head is cylindrical, a circular table structure extends out from a cylindrical top end in a direction perpendicular to a center line of a cylinder, a pressure measuring middle hole is formed in a top surface of the circular table, and a pressure measuring upper hole, a pressure measuringlower hole, a pressure measuring left hole and a pressure right hole which are free from communication are uniformly formed in the side surface of the circular table; six circular convection heat transfer holes are formed in a leeward side, opposite to the circular table, of the probe head, and a low-speed separation area is distributed on the leeward side of the probe head. The probe disclosed by the invention can measure the total temperature, total pressure, static temperature, static pressure, Mach number, deflection angle, pitch angle, speed and density of the transonic three-dimensionalsteady-state flow field at the same time, and has the features of small size, small airflow non-sensitive angle, high reliability, high space resolution and high measurement precision.

Description

technical field [0001] The invention belongs to the technical field of flow field testing, and in particular relates to a probe for measuring full parameters of a transonic three-dimensional steady-state flow field, which is suitable for measuring full parameters of a transonic three-dimensional steady-state flow field at the inlet, outlet and interstage of a turbomachinery. Background technique [0002] At present, the five-hole pressure probe is often used to obtain the total pressure, static pressure, deflection angle, pitch angle, and Mach number of the transonic three-dimensional steady-state flow field. The five-hole pressure probe measurement cannot measure the temperature parameters. To obtain the incoming flow temperature , also need to use the total temperature probe to measure. Most of the existing temperature probes are designed according to the requirement that the temperature sensor is facing the mainstream. The head of the temperature probe adopts a stagnation...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a probe for measuring the full parameters of the transonic three-dimensional steady-state flow field. The technical problems to be solved are: first, the existing probes cannot simultaneously measure the total temperature and total pressure of the transonic three-dimensional steady-state flow field , static temperature, static pressure, Mach number, deflection angle, pitch angle, speed, and density parameters; second, the existing temperature probe temperature sensor is easily damaged and has a short life; third, the existing probe The problem of large size and poor spatial resolution; fourth, the problem of small airflow insensitivity angle of existing temperature probes

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