| 摘要 |
A heat-insulated pipe and a separate hermetically sealed pipeline section with hydroprotection along the external surface and along the ends, which section is formed by the heat-insulated pipe, which comprises an internal working pipe which is arranged in an external hydroprotected pipe casing so as to form a "pipe in pipe" construction, a heat insulation layer filling an inter-pipe space between the above-mentioned pipes, and also end plugs, each of which has an axial opening to receive the working pipe and is nondetachably and hermetically connected to the external hydroprotected pipe casing. Openings which are usable in the manufacturing of the heat-insulated pipe are formed in each end plug, at least one of which openings is intended for the pouring of a foaming heat insulation composition and at least one opening, which is covered by a perforated section, is intended for communication of the inter-pipe cavity with the heat insulation layer with the external environment, furthermore, at least one further opening is formed in the plug and is intended for guiding out the elements of a system for monitoring the state of the heat insulation layer, wherein all of the openings in the end plugs can be closed with stoppers. |
