Air cooling high-temperature dynamic pressure probe

Abstract

The present invention belongs to the high-temperature pressure test technology field, and discloses an air cooling high-temperature dynamic pressure probe. The air cooling high-temperature dynamic pressure probe comprises a probe pole 1, a probe head 2 and a transition section 3. The probe pole 1 and the probe head 2 are cylinder structures, and the internal portion of the probe head 2 employs a special structure; the probe pole 1 comprises a left air inlet pipe 4, a middle air inlet pipe 5 and a right air inlet pipe 6; the three air inlet pipes can perform cooling air input, and the cooling air inlet pipes 4, 5 and 6 are inserted into the cylindrical groove of the probe head 2; the cylindrical surface of the probe head 2 is provide with a circular pressure feeling hole 7; a sensor cable 8 leads out the tail of the probe from the probe pole 1; an air outlet pipe 9 is led out from the lower portion of the probe pole 1; and the number 10 is a dynamic pressure sensor which is connected with the sensor cable 8. Compared to the current dynamic pressure probe test technology, through adjustment and calibration, the air cooling high-temperature dynamic pressure probe can perform flow field dynamic pressure measurement in the higher temperature condition and avoid damaging of the dynamic pressure sensor in the probe caused by being heated.

Description

technical field [0001] The invention relates to the technical field of high-temperature pressure testing, in particular to an air-cooled high-temperature dynamic pressure probe. The invention can perform dynamic measurement of parameters such as total pressure, Mach number and flow direction of the flow field at high temperature, and can simultaneously prevent the dynamic pressure sensor in the probe head and the sensor cable from temperature drift or even damage due to heating, providing A method for dynamic measurement of flow field parameters at high temperature. Background technique [0002] The dynamic pressure probe is one of the main means of flow field testing at present. The existing dynamic pressure probe testing technology is mainly used in the dynamic measurement of the flow field at ordinary temperatures. 1. The sensor cable cannot be effectively cooled, and the dynamic measurement method of the flow field is still lacking. The air-cooled high-temperature dyna...

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Problems solved by technology

[0003] The technical problem mainly solved by the present invention is: aiming at the lack of means for dynamic pressure testing of the flow field under high temperature conditions, the present invention provides an air-cooled high-temperature dynamic pressure probe, which can measure the total pressure, Mach number and Dynamic measurement of flow direction and other parameters, and at the same time prevent the dynamic pressure sensor and sensor cable in the probe head from temperature drift or even damage, providing a means of dynamic measurement of flow field parameters at high temperatures

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