Aero-engine air test pipeline

Abstract

The invention discloses an aero-engine air test pipeline. The aero-engine air test pipeline comprises a joint provided with two interfaces; a sensor joint communicated with an interface at one end of the joint and a test part joint communicated with an interface at the other end of the joint form an air test pipeline in a closed environment; and a high-altitude low-temperature and ground low-temperature anti-icing and drainage structure is arranged on the joint. As the joint is provided with a high-altitude low-temperature and ground low-temperature anti-icing and drainage structure, when an airplane flies in a high-altitude low-temperature environment and is stored on the ground at low temperature, once water drops formed by condensation exist in a pipeline, the water drops can be timely and effectively drained, and the condition that parameter measurement is invalid or inaccurate is avoided; and the accuracy of establishing the height-speed characteristic by the system is ensured, so that the engine can work normally.

Description

technical field [0001] The invention relates to an air test pipeline of an aero-engine, belonging to the technical field of joints and pipeline structures. Background technique [0002] Aeroengines are one of the most sensitive parts of an aircraft to icing. When the engine is running at high speed, the air in the intake port is in a suction state, the airflow accelerates, and the static temperature drops, making the air intake system of the aeroengine more susceptible to weather changes and more likely to freeze. At the same time, when the aero-engine is stored in a low-temperature environment after operation, the air humidity in the pipeline is high and it is easy to condense into water droplets in the low-temperature environment. If the water droplets are not discharged in time, it is easy to form effusion and cause the pipeline to be iced. [0003] In most cases, the temperature of the medium in the external pipeline of the aero-engine is in the positive temperature ran...

AI Technical Summary

Problems solved by technology

At the same time, when the aero-engine is stored in a low-temperature environment after operation, the air humidity in the pipeline is easy to condense into water droplets in a low-temperature environment. If the water droplets are not discharged in time, it is easy to form effusion and cause the pipeline to be iced.

[0003] In most cases, the temperature of the medium in the external pipeline of the aero-engine is in the positive temperature range, but most of the measurement environments in the gas circuit pressure measurement pipeline of the measurement and control system are closed environments, and the diameter of the pressure measurement pipeline is generally small. When flying with the aircraft in a high-altitude and low-temperature environment and storing at a low temperature on the ground, once there are water droplets formed by condensation in the pipeline and cannot be effectively eliminated, it is easy to cause parameter measurement failure or inaccuracy, causing system failures, inaccurate establishment of altitude-speed characteristics, and affecting the engine. normal work

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