FIELD: construction.
SUBSTANCE: group of inventions relates to construction and repair of pipelines and can be used for internal repair of pipes and pipelines, such as sewer pipes, pressure head water lines, water wells and natural gas pipelines. The device for repair of pipelines includes a bush with a fixing device intended for fixing of the bush in a tubular configuration. The bush is made from a metal sheet or rigid plastic sheet with perforations. Some of perforations have the shape similar to extended cuts and stripes. Several elastic sealing rings are installed outside the external surface of the bush. The elastic membrane is placed outside of sealing rings. In one version of implementation a reinforce strip is used, and an additional layer from sealing rings is located between a membrane and reinforce strip.
EFFECT: facilitating of internal repair of pipes and pipelines.
12 cl, 15 dwg
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