Vacuum insulated pipe

An insulated piping system for conveying fluids which are at temperatures deviating greatly from ambient comprising:

• a) at least two pipe sections, each including:
• i) an inner pipe having a pair of opposite end portions;
• ii) an outer pipe having a pair of opposite end portions, said outer pipe concentrically disposed about the inner pipe;
• iii) bellow members each having a corrugated middle portion with a pair of cylindrical non-corrugated end portions connected directly thereto, said end portions directly and sealingly connected to the end portions of said inner and outer pipes so that an enclosed annular space is defined between said pipes;
• and
• b) the end portions of said inner pipes being connected so that the inner pipes are abutting and in communication with one another for fluid flow therethrough.

An insulated pipe section adapted to be joined to similar pipe sections for conveying fluids which are at temperatures deviating greatly from ambient comprising:

• a) an inner pipe having a pair of opposite end portions through which the fluids may flow;
• b) an outer pipe having a pair of opposite end portions, said outer pipe concentrically disposed about the inner pipe;
• c) bellow members sealingly connected to the end portions of said inner and outer pipes so that an enclosed annular space is defined between said inner and outer pipes, said annular space being evacuated to below atmospheric pressure;
• and
• d) thermal insulating material disposed in said annular space and wrapped in layers about said inner pipe with inert insulating granules placed between the layers of insulation.

An insulated piping system for conveying fluids which are at temperatures deviating greatly from ambient comprising:

• a) at least two pipe sections, each including:
• i) an inner pipe having a pair of opposite end portions;
• ii) an outer pipe having a pair of opposite end portions, said outer pipe concentrically disposed about the inner pipe;
• iii) bellow members sealingly connected to the end portions of said inner and outer pipes so that an enclosed annular space is defined between said pipes;
• b) the end portions of said inner pipes being connected so that the inner pipes are abutting and in communication with one another for fluid flow therethrough;
• and
• c) a clam shell for covering the connected end portions of said inner pipes and two of said bellow members so that they are insulated and protected, said clam shell containing insulation material and lined with metal foil so as to form a vapor barrier for said insulation material.

An insulated piping system for conveying fluids which are at temperatures deviating greatly from ambient comprising:

• a) at least two pipe sections, each including:
• i) an inner pipe having a pair of opposite end portions and partially covered with insulation material, said insulation material wrapped in layers about the inner pipe with inert insulating granules placed between the layers of insulation;
• ii) an outer pipe having a pair of opposite end portions, said outer pipe concentrically disposed about the inner pipe;
• iii) bellow members sealingly connected to the end portions of said inner and outer pipes so that an enclosed annular space is defined between said pipes, said annular space being partially evacuated to below atmospheric pressure;
• and
• b) the end portions of said inner pipes being connected so that the inner pipes are abutting and in communication with one another for fluid flow therethrough.

An insulated piping system for conveying fluids which are at temperatures deviating greatly from ambient comprising:

• a) at least two pipe sections, each including:
• i) an inner pipe having a pair of opposite end portions;
• ii) an outer pipe having a pair of opposite end portions, said outer pipe concentrically disposed about the inner pipe;
• iii) bellow members sealingly connected to the end portions of said inner and outer pipes so that an enclosed annular space is defined between said pipes;
• b) the end portions of said inner pipes being connected so that the inner pipes are abutting and in communication with one another for fluid flow therethrough;
• and
• c) a clam shell for covering the connected end portions of said inner pipes and two of said bellow members so that they are insulated and protected, said clam shell featuring a resealable port through which insulation material may be added or replaced.

An insulated piping system for conveying fluids which are at temperatures deviating greatly from ambient comprising:

• a) at least two pipe sections, each including:
• i) an inner pipe having a pair of opposite end portions;
• ii) an outer pipe having a pair of opposite end portions, said outer pipe concentrically disposed about the inner pipe;
• iii) bellow members sealingly connected to the end portions of said inner and outer pipes so that an enclosed annular space is defined between said pipes;
• b) the end portions of said inner pipes being connected so that the inner pipes are abutting and in communication with one another for fluid flow therethrough;
• and
• c) a clam shell for covering the connected end portions of said inner pipes and two of said bellow members so that they are insulated and protected, said clam shell joined to the outer pipes of said pipe sections with a water proof sealant such as silicon.