Sealing device for well components

摘要

A sealing device is for sealing fluid transmittable openings in well components. The sealing device includes an elastic element which is arranged between two shoulders. The elastic element, before being placed in the fluid transmittable opening, has a larger external dimension than the fluid transmittable opening to be sealed. A gap is arranged between at least one of the shoulders and the elastic element, allowing liquid to enter between the shoulder and the elastic element. The ridge is arranged on an intermediate piece which is located between the shoulder and the elastic element. The intermediate piece is constituted by as ring in which the ridge is surrounding and divided, and projects from an end surface opposite an abutment surface facing the elastic element.

主权项

1. A sealing device for sealing a sealing surface of a fluid transmittable opening in well components, the sealing device comprising an elastic element which is configured between two shoulders fixed on a turned-down portion of a seal mount configured to be received in the fluid transmittable opening, and the elastic element, before being placed in the fluid transmittable opening, having a larger external diameter than an internal diameter of the fluid transmittable opening to be sealed such that the elastic element seals against the sealing surface with a first surface pressure when the seal mount is received within the fluid transmittable opening, and where between at least one of the shoulders and the elastic element, a gap is formed by a ridge which abuts against the shoulder and which allows liquid to enter the gap between the shoulder and the elastic element, wherein the ridge is arranged on an intermediate piece which is located between the shoulder and the elastic element, and where the intermediate piece is constituted by a ring wherein the ridge is divided into segments, extends circumferentially within the ring, and projects from an end surface of the ring opposite an abutment surface facing the elastic element,
wherein, in response to fluid pressure from the liquid entering the gap, the ring is configured to move axially along the turned-down portion toward the elastic element so that the elastic element exerts a second surface pressure increased relative to the first surface pressure against the sealing surface.