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Total temperature/total pressure and static probe

A static pressure and probe technology, which is used in thermometers, fluid pressure measurement, simultaneous measurement of multiple hydraulic valves, etc., to achieve the effect of reducing airflow kinetic energy, improving accuracy, and accurate total temperature measurement

Active Publication Date: 2011-08-03
NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a total temperature / total pressure and static pressure probe that can accurately measure the flow field parameters at a certain point in the flow field in view of the high temperature, high speed, complex air flow environment and parameter test requirements.

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  • Total temperature/total pressure and static probe

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Embodiment Construction

[0026] Such as figure 1 As shown, the present invention is made up of total temperature probe and L-shaped pitot tube (being total pressure, static pressure probe), and there is certain interval between the two, and total temperature probe comprises total temperature hysteresis cover, thermocouple lead-out tube 1. Composed of thermocouples installed in the total temperature hysteresis cover, the total temperature hysteresis cover is provided with an air inlet and an air outlet, and the air inlet is large and the air outlet is small, so that the flow energy of the air can be fully converted into heat energy, and a value close to the theoretical value can be obtained total temperature. The air inlet and air outlet adopt a misplaced structure, that is, the air inlet faces the airflow, the air outlet faces away from the airflow, the air inlet is close to the end of the total temperature hysteresis cover, and the air outlet is away from the end of the total temperature hysteresis c...

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Abstract

The invention relates to a total temperature / total pressure and static probe which comprises a flange used for installing in a flow field to be tested, a total temperature probe, an L-shaped pitot tube used for detecting the total pressure and the static pressure, an annular pressure drawing chamber fixed at the outer side of the flange, a total pressure filler neck and a static filler neck, wherein the total pressure filler neck and the static filler neck are arranged on the pressure drawing chamber. Aiming to the high-temperature and high-speed complex airflow environment and the parameter test requirements, the invention provides the total temperature / total pressure and static probe which can accurately measure flow field parameters of some a fixed point in the flow field. The total temperature / total pressure and static probe can simultaneously detect flow field parameters of the total pressure, the static pressure, the temperature, the flow rate and the like of the fixed point, and accurate flow field parameters are acquired with calibration of a calibration tunnel.

Description

technical field [0001] The invention relates to a total temperature / total pressure and static pressure probe used for measuring parameters such as total temperature, total pressure, static pressure and flow velocity in high-temperature and high-speed airflow. Background technique [0002] At present, domestic theories and technologies for independently measuring the total temperature of the incoming flow or measuring the total pressure and static pressure with pitot tubes are relatively complete and mature. It is difficult to measure the total temperature, total pressure, static pressure, and flow velocity parameters at fixed points at the same time. In the case of specific profiles and parameter measurement requirements, it is necessary to design a total temperature / total pressure, static pressure probe with a specific structure. needle for measurement. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a total te...

Claims

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Application Information

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IPC IPC(8): G01K7/04G01K13/02G01L15/00G01K13/024
Inventor 郁峰曹智程杨国华
Owner NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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