Method for sealing a junction having a contact surface and a counter-contact surface of an element of a compartment of a gas-insulated substation, and resulting junction
AssigneeRte Reseau De Transport D'Electricite
InventorFabrice Durand
Life of this patent
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Abstract
A method for sealing a junction with a contact surface and counter-contact surface of an element of a compartment of a gas-insulated substation includes injecting a sealing product into an inter-seal volume formed between the contact surface and counter-contact surface by using a leakage recovery duct opening into the inter-seal volume. Prior to injection, a vent duct different from the leakage recovery duct is drilled from the outside of the compartment into the inter-seal volume. During injection, the sealing product is injected under pressure into the inter-seal volume until it fills it, then exits through the vent duct.
Claims16
A method for sealing a junction with a contact surface and counter-contact surface of an element of a compartment of a gas-insulating substation, the junction comprising two mechanical seals clamped between the contact surface and the counter-contact surface, the two mechanical seals arranged so as to form a closed inter-seal volume therebetween such that the inter-seal volume is delimited by both of the two mechanical seals and by the contact surface and counter-contact surface, the method for sealing comprising an injection of a sealing product into the inter-seal volume using a leakage recovery duct arranged in a thickness of the compartment, this duct opening into the inter-seal volume, wherein:
- prior to said injection, the method for sealing comprises drilling a vent duct different from the leakage recovery duct from an outside of the compartment into the inter-seal volume;
- and
- during said injection, the sealing product is injected under pressure into the inter-seal volume until the sealing product fills the inter-seal volume, then exits through the vent duct.
A junction with contact surface and counter-contact surface of an element of a gas-insulated substation compartment, comprising:
- two mechanical seals clamped between the contact surface and counter-contact surface, the two mechanical seals arranged to form a closed inter-seal volume therebetween that is delimited by the two mechanical seals and by the contact surface and counter-contact surface;
- a sealing product injected under pressure into the inter-seal volume using a leakage recovery duct arranged into a thickness of the compartment, the leakage recovery duct opening out into the inter-seal volume, and
- a vent duct, different from the leakage recovery duct, drilled from an outside of the compartment to the inter-seal volume and filled with sealing product.
Dependencies are inferred from the claim text.