Nitrogen-rich air oxygen concentration detection device for airborne film separator

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Nitrogen-rich air oxygen concentration detection device for airborne film separator

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JIANG DONGSHENG / LEI JINGFA / LIU WEI / FANG JIGEN / GAO TING

The invention belongs to an air oxygen concentration detection technology and relates to a nitrogen-rich air oxygen concentration detection device for an airborne film separator. The device is characterized in that the device is composed of an oxygen concentration detection air circuit and an oxygen concentration signal processing circuit, wherein the oxygen concentration detection air circuit comprises an airborne film separator (2), a sampling pipeline (6), an oxygen concentration sensor (9), an absolute pressure reducer (7), a sealing airket (3), a filtering and flow limiting assembly and alocking screw ring (11), and the oxygen concentration signal processing circuit is composed of a DC/DC converter (13), an amplifier (14), an AD converter (15), a display encoder (16) and a comparator(17). The invention provides an oxygen concentration high-precision monitoring device for an aircraft fuel tank inerting system, by filtering impurities in oxygen-enriched air, limiting air flow andreducing air fluctuation and environmental height influence, mechanical and electrical integration monitoring is achieved, measurement precision is high, the response time is short, reliability is high, the service life is long, and the requirement for detecting the oxygen concentration of nitrogen-enriched air is met.

本发明属于气体氧浓度检测技术，涉及一种用于机载膜分离器的富氮气体氧浓度检测装置。其特征在于，它由氧浓度检测气路和氧浓度信号处理电路组成，氧浓度检测气路包括机载膜分离器(2)、采样管线(6)、氧浓度传感器(9)、绝压减压器(7)、密封垫(3)、过滤限流组件、锁紧螺环(11)；氧浓度信号处理电路由DC/DC变换器(13)、放大器(14)、AD转换器(15)、显示编码器(16)和比较器(17)组成。本发明提出了一种用于飞机油箱惰性化系统的氧浓度高精度监测装置，通过了过滤富氧空气的杂质、限制气体流量以及减小了气体波动以及环境高度影响，实现了机电一体化监测，测量精度高，响应时间快、可靠性高、寿命长，满足了富氮气体氧浓度检测的需求。

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Title :

Nitrogen-rich air oxygen concentration detection device for airborne film separator

Additional title:

一种用于机载膜分离器的富氮气体氧浓度检测装置

Contributors:

JIANG DONGSHENG (author) / LEI JINGFA (author) / LIU WEI (author) / FANG JIGEN (author) / GAO TING (author)

Publication date :

2020-05-29

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Chinese

Classification :

IPC:

G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT