An Aircraft Temperature Control Valve On-Wing Test Device

Abstract

The invention relates to the technical field of aircraft performance tests, in particular to an on-wing testing device for temperature control valves of aircrafts. The on-wing testing device comprises a tester and two temperature measuring probes. The two temperature measuring probes respectively measure temperatures of upstream pipelines and downstream pipelines of the temperature control valves and transmit measured temperature values to the tester; the tester comprises an analysis module, a valve driving control module, a temperature analog-digital conversion module, a fault display module and a virtual temperature control valve module; the temperature control valves can be switched on and off under the control in simulated temperature control valve working states, faults of the temperature control valves are analyzed according to the temperature difference between the upstream pipelines and the downstream pipelines and switching feedback information of the temperature control valves, and fault analysis results can be displayed. The on-wing testing device for the temperature control valves of the aircrafts has the advantages that on-wing tests for the temperature control valves can be guaranteed, the temperature control valves do not need to be detached from aircraft bodies, accordingly, detection work can be facilitated to the greatest extent, and the on-wing testing device is high in accuracy.

Description

technical field [0001] The invention relates to the technical field of aircraft performance testing, in particular to an on-wing testing device for an aircraft temperature control valve. Background technique [0002] At present, the 737-800 aircraft is equipped with five identical temperature control valves, of which two temperature control valves are used for temperature control of air conditioning components, and the other three temperature control valves are used for cabin temperature control. The five temperature control valves are respectively controlled by two component area temperature controllers and feed back switch position signals. [0003] Among them, in the actual maintenance process, there are three common failure modes of the temperature control valve: 1. Failure of the position switch; 2. Failure of the drive motor; 3. Failure of the sealing of the valve disc. [0004] For the above-mentioned three failure modes of the temperature control valve, the fault di...

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Problems solved by technology

[0008] The purpose of the present invention is to provide an aircraft temperature control valve on-wing test device, to overcome the defects of the detection method of the temperature control valve in the prior art, such as large workload, inconvenient detection, and inaccurate detection.

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