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AssigneePlastic Omnium New Energies France
InventorsYann SINAULT, Christian BOPWA MUNTU, Claude MESJASZ
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The safety device (3) comprises: a ventilation channel (9) intended to establish fluid communication between an internal volume (10) defined by a tank and the outside of the tank (2), a safety piston (5) movable between a closure position in which it closes the ventilation channel (9), and a safety position in which it does not close the ventilation channel, a first safety member (6) which is deformable and that keeps the safety piston in the closure position against an elastic force returning the safety piston to the safety position, means (7) for deforming the first safety member (6), which means are movable between a resting position and a deformation position, and at least a second safety member (8) intended, in a resting position, to hold the deformation means in the resting position against an elastic force returning the deformation means back to the deformation position when the second safety member experiences a temperature lower than a predetermined temperature and, in a working position, to release the elastic force for returning the deformation means in the deformation position when the second safety member experiences a temperature higher than the predetermined temperature, The second safety member (8) is formed by a safety cable (16) made of a material that has low mechanical resistance to fire.
A safety device (3) for a tank (2) intended to contain a pressurized gas, comprising:
The safety device (3) according to any one of the preceding claims, wherein the elastic force returning the deformation means (7) in the deformation of the first safety member (6) position is provided by a spring (14) resting on a support seat having an opening configured to allow the passage of the second safety member.
The device (3) according to any one of the preceding claims, wherein the safety piston (5) has a housing (11) configured to house at least part of the deformation means (7) when the safety piston (5) is in the safety position and the deformation means (7) are in the deformation of the first safety member (6) position.
The safety device (3) according to any one of the preceding claims, wherein the deformation means (7) comprise a striking element.
The safety device (3) according to any one of the preceding claims, wherein the second safety member (8) comprises an elastic member.
The safety device (3) according to any one of the preceding claims, wherein the safety cable (16) is made of a material classified D according to the European standard EN 13501-1 or of a material classified M3 or M4 according to the French standard NF P92-507.
The safety device (3) according to any one of the preceding claims, wherein the safety cable (16) is made of a material selected from the group consisting of rubbers, polyamides, wools, polyesters, high-density polyethylenes, preferably of high molecular weight, polypropylenes, and combinations thereof.
The safety device (3) according to any one of the preceding claims, wherein the safety cable (16) is made of a material having a mechanical resistance to fire of between 10 seconds and 1 hour, preferably between 1 minute and 45 minutes, even more preferentially between 10 minutes and 30 minutes.
The safety device (3) according to any one of the preceding claims, wherein the second safety member (8) is coupled to the deformation means (7) by a third safety member (19) intended to cooperate with the second safety member (8) so as to hold the second safety member (8) in the resting position when the second safety member (8) is subjected to a temperature below the predetermined temperature and to elastically return the second safety member (8) to the working position when the second safety member (8) is subjected to a temperature higher than the predetermined temperature.
Dependencies are inferred from the claim text.