Autonomous pyrotechnical method and device for injecting a fluid
AssigneeHerakles
InventorsCorinne Gauthier, Pierre Yvart, Laurent Blarasin
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Abstract
The invention relates to a method and to an autonomous device (10d) for injecting a fluid (F), that uses pyrotechnical means (1d). The invention can be used in particular for injecting a protection fluid (F) into a system that is subject to overheating (8d). The method is characterized in that it uses a thermally triggered charge (1d).
Claims11
A method for the autonomous injection of a fluid, comprising:
- thermal initiation and combustion of at least one thermally initiatable gas-generating pyrotechnic charge;
- generation of combustion gases, said gases consisting of those resulting from said combustion of said at least one thermally initiatable gas-generating pyrotechnic charge or consisting of those resulting from said combustion of said at least one thermally initiatable gas-generating pyrotechnic charge and the combustion of at least one combustion-initiated pyrotechnic charge combustion-initiated by said at least one thermally initiatable pyrotechnic charge;
- pressurization of said fluid under action of said combustion gases;
- and
- delivery of said pressurized fluid;
- said fluid being a safeguarding, protective or conditional preventive-maintenance fluid delivered into a system subject to overheating;
- and
- said combustion of said at least one thermally initiatable pyrotechnic charge being carried out in at least one housing of suitable thermal conductivity, said at least one housing being in contact with and heated by said system subject to overheating or being at least partially integrated into said system.
An assembly comprising a system and at least one device in close association with the system, said system subject to overheating, said device for an autonomous injection of a fluid into said system, said device comprising:
- at least one housing of suitable thermal conductivity, capable of accommodating at least one thermally initiatable combustion-gas-generating pyrotechnic charge said pyrotechnic charge being spontaneously ignitable when said housing conducts heat to raise the temperature of said pyrotechnic charge to an ignition temperature;
- a reservoir suitable for storing unpressurized fluid, equipped to deliver pressurized fluid through the action, directly or via a movable separating member between said at least one housing and said reservoir, of said combustion gases;
- and
- said device being suitable for contacting with and heated by said system which is subject to overheating or being at least partially integrated into said system.
Dependencies are inferred from the claim text.