An Oxygen Concentration Detection Structure for Oxygen-enriched Air Used in Airborne Separators

Abstract

The invention discloses an oxygen-enriched air oxygen concentration detection structure for an airborne separator, which belongs to gas oxygen concentration detection technology, and is characterized in that it includes an airborne separator (2), a sampling pipeline (6), a pressure sensor (5), oxygen partial pressure sensor (9), one-way valve (7), gasket (3), filter current limiting assembly, locking screw ring (11); The oxygen concentration detection structure of oxygen-enriched air improves the accuracy, reliability and service life of the system by filtering impurities in oxygen-enriched air, limiting gas flow and reducing gas fluctuations.

Description

technical field [0001] The invention belongs to gas oxygen concentration detection technology, and relates to an improvement of an oxygen concentration detection structure of oxygen-enriched air used for an airborne separator. Background technique [0002] The separators currently onboard can generate oxygen-enriched air from the aircraft's own compressed air source over a very long period of time. Passengers can thus be supplied with oxygen-enriched air not only during the descent of the aircraft but also during its temporary flight altitude. Such as: Chinese patent application CN1549785A (for the method and device of dispensing oxygen-enriched air for aircraft passengers) has announced that "separator 2 includes an output pipeline 8 and a pipeline 10, wherein, nitrogen-enriched air flows out from pipeline 8, Oxygen-enriched air flows in pipeline 10. Said pipeline 10 is provided with a sensor 12 to monitor the oxygen concentration of the oxygen-enriched air flowing through...

AI Technical Summary

Problems solved by technology

", its shortcoming is: 1, when aircraft descends between cruising altitude and interim altitude, a first part oxygen-enriched air is conveyed to passenger from an independent source 18, and starts when approaching interim altitude, at least in a roughly During steady flight, an on-board separator 2 produces a second portion of oxygen-enriched air delivered to the passengers, the sensor 12 detects only the oxygen concentration of the oxygen-enriched air of the separator 2, and does not detect the oxygen concentration of the oxygen-enriched air of the independent source 18, It can be seen that the frequency of use of the sensor 12 is relatively small, and the service life has not been fully verified; 2. The oxygen concentration detection structure disclosed in the Chinese patent application CN1549785A describes that the oxygen-enriched air of the separator 2 flows in the pipeline 10, and the pipeline 10 is provided with A sensor 12 is used to monitor the oxygen concentration of the oxygen-enriched air flowing there, and the disclosed structure is relatively simple; 3. The sensor 12 is affected by factors such as the cleanliness of the test gas, pressure, flow rate, etc. during the test, disclosed in Chinese patent application CN1549785A structure, it is difficult to meet the requirements of reliability, service life and test accuracy

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