| 摘要 |
The object of the invention is to provide a method and a system for sealing the transition of a branch pipe and a main pipe and a method for inserting and curing a branch seal without to any substantial extent negatively affecting the main liner.
This object is achieved by a method of applying a resin impregnated seal onto a junction between a branch pipe and a main pipe, the seal comprising a tubular part defining a first opening and a second opening opposite the first opening and a brim portion attached to the tubular part. The method comprises the provision of a sealing apparatus including a housing with an aperture, an inflatable ring structure fixated externally to the housing at the aperture and circumferentially encircling the aperture and having an integral irradiation source for irradiating outwardly from the ring structure, a flexible guiding tube, and a mobile radiant energy source for being inserted into the aperture for irradiating outwardly. The method furthermore comprises the steps of positioning the flexible guiding tube such that its closed end is located outside the housing, positioning the brim portion of the seal juxtaposed the inflatable ring structure and having the tubular part extending through the inflatable ring structure and the aperture of the housing positioning the housing inside the main pipe, fixating the brim portion to the main pipe at the junction by pressurizing the inflatable ring structure, inverting the seal such that the tubular part of the seal and the closed end of the flexible guiding tube extend into the branch pipe by the application of pressurized fluid from an opening of the housing towards the aperture, positioning the mobile radiant energy source inside the tubular part, irradiating radiant energy from the integrated radiant energy source for curing the brim portion and irradiating radiant energy from the mobile radiant energy source for curing the tubular part. |
