Device for safely actuating pressurized gas supply container in aircraft

By introducing a combined design of manifolds, actuators, pressure reducers, and heat dissipation equipment into the aircraft oxygen supply system, the problems of high maintenance costs and fire risks in the event of a failure in the oxygen supply system are solved, and a fast, reliable, and safe oxygen supply is achieved.

CN121925296APending Publication Date: 2026-04-24SAFRAN AEROSYST
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Patent Information

Application Number
CN202480062644.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-09-29
Filing Date
2024-09-26
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing aircraft oxygen supply systems are costly to maintain in case of failure and pose a fire risk. Furthermore, the sealed pressurized oxygen containers may leak slowly, affecting the system's reliability and safety.

Method used

A gaseous oxygen supply container device is designed, including a manifold and an actuator. The manifold is in fluid communication with a seal, and the actuator punctures the seal upon triggering. The device is connected to a low-pressure outlet via the manifold and is equipped with a pressure regulator and a calibration port to prevent pressure buildup and to regulate pressure during oxygen flow. A pressure relief valve and a heat dissipation device are also incorporated to reduce temperature rise and fire risk.

Benefits of technology

It enables rapid, reliable, and safe activation in the event of an oxygen supply system failure, reduces temperature rise and fire risk, lowers maintenance costs, and improves system reliability and safety.

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Abstract

The invention relates to a device for safely actuating a gaseous oxygen supply container in an aircraft for dispensing oxygen to a user, the container (1) being intended to store pressurized oxygen at a first oxygen pressure and having an opening (2) sealed by a seal (9). The apparatus comprises: a manifold (4) connected in fluid communication with the seal (9) and configured to receive a flow of oxygen from the opening (2) when the seal (9) is pierced, the manifold (4) comprising an oxygen flow circuit (11), an oxygen flow circuit connected in fluid communication with the seal (10) and having an outlet (14) at a second oxygen pressure lower than the first pressure and a pressure reducer (13) having means (12, 15, 16) for regulating the oxygen pressure between the opening (2) and the outlet (14) during flow; and an actuator (7) located in the opening (2), the actuator being configured to pierce the seal (9) when triggered to allow oxygen to flow from the container (1) through the opening (2) to the outlet (14), the oxygen flow circuit (11) comprising a calibration aperture (17) provided at the outlet (14), the calibration aperture is configured to prevent any accumulation of oxygen at a third pressure between the first pressure and the second pressure without triggering the actuator (7) in the event that oxygen flows to the outlet (14).
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