# US 10,485,145 B2 · Cooling system for electrical equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,485,145 B2 - Document ID: US10485145B2 - Status: Granted - Kind: B2 - Application number: 15/285,823 - Filed: 2016-10-05 - Published: 2017-05-04 - Granted: 2019-11-19 - Earliest claimed: 2015-11-03 - Assignees: ROLLS-ROYCE plc - Applicants: ROLLS-ROYCE plc - Inventors: John J A Cullen - Web page: https://patentgrep.com/patent/US10485145B2 ## CPC - H05K 7/20927: {Liquid coolant without phase change} - H01B 12/16: characterised by cooling - H02G 3/04: Protective tubing or conduits, e.g. cable ladders or cable troughs - H02G 15/34: Cable fittings for cryogenic cables {(superconductive cables per se H01B12/00)} - Y02E 40/60: Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract This invention concerns a cryo-cooled electrical conduction network. The conduction network has an electrical network divided into two or more conductive sections, each section comprising electrical equipment (24, 28). The conductive network also has a coolant network for maintaining the temperature of a coolant in each section. The electrical equipment (24, 28) and a corresponding portion of the coolant network of each section is housed in a section enclosure (10, 12, 14). The coolant network includes a coolant interface (40) located between each section, wherein the coolant interface (40) is housed in an intermediate enclosure (16, 18, 20, 22) that is isolatable from the section enclosures (10, 12, 14) in the electrical conduction network. ## Claims ### Claim 1 A cooled electrical conduction network comprising: an electrical network divided into two or more conductive sections, each of the two or more conductive sections being connected to a respective electrical equipment having superconductor material that performs a respective operation during use; and a coolant network for maintaining the temperature of a coolant in each of the two or more conductive sections, wherein the electrical equipment and each of sections of the coolant network corresponding to each of the two or more conductive sections are housed in each of section enclosures of the cooled electrical conduction network, the coolant network comprising a coolant interface located between each of the two or more conductive sections, wherein the coolant interface is housed in each of intermediate enclosures that is isolated from the section enclosures in the cooled electrical conduction network, and wherein the electrical equipment is superconducting electrical equipment. ### Claim 2 (depends on 1) The cooled electrical conduction network according to claim 1, wherein the cooled electrical and coolant network continuous operate in normal operation and pass through the section enclosures and the intermediate enclosures. ### Claim 3 (depends on 1) The cooled electrical conduction network according to claim 1, wherein each of the intermediate enclosures has an enclosure interior, and each of the two or more conductive sections of the electric network and each of the sections of the coolant network within each of the section enclosures are isolated from the enclosure interior of neighboring intermediate enclosures and passes through the enclosure interior within a vessel. ### Claim 4 (depends on 1) The cooled electrical conduction network according to claim 1, wherein the coolant interface comprises a coolant valve for isolating one section of the coolant network from other sections of the coolant network. ### Claim 5 (depends on 1) The cooled electrical conduction network according to claim 1, wherein each of the section enclosures comprises a pressure regulation valve. ### Claim 6 (depends on 5) The cooled electrical conduction network according to claim 5, wherein the pressure in each of the section enclosures and/or each of the intermediate enclosures is independently regulated using the pressure regulation valve. ### Claim 7 (depends on 1) The cooled electrical conduction network according to claim 1, wherein each of the section enclosures has an interior housing, one of the two or more conductive sections of the electric network and one of the sections of the coolant network corresponding to the one of the two or more conductive sections, the interior housing is sealed shut in normal use and is selectively openable in order that the interior is accessible. ### Claim 8 (depends on 1) The cooled electrical conduction network according to claim 1, wherein the cooled electrical conduction network comprises a coolant source for cooling coolant in one or more of the sections of the coolant network. ### Claim 9 (depends on 1) The cooled electrical conduction network according to claim 1, wherein the coolant network is a cryogenic cooling network. ### Claim 10 (depends on 1) The cooled electrical conduction network according to claim 1, wherein each of the two or more conductive sections of the electrical network comprises at least one electrical disconnect switch. ### Claim 11 (depends on 1) The cooled electrical conduction network according to claim 1, comprising a bypass section, arranged to be conductively connected to one or more of the two or more conductive sections of the electrical network so as to allow selective isolation of one or more of the two or more conductive sections from a remainder of the two or more conductive sections of the electrical network. ### Claim 12 (depends on 11) The cooled electrical conduction network according to claim 11, wherein the bypass section comprises one or more fluid coolant connection to a corresponding one or more fluid coolant interface. ### Claim 13 (depends on 11) The cooled electrical conduction network according to claim 11, wherein the bypass section is permanently connected to the one of the two or more conductive sections and the bypass section and/or the connected one of the two or more conductive sections comprises an electrical disconnect switch for controlling electrical conduction with the bypass section. ### Claim 14 (depends on 1) The cooled electrical conduction network according to claim 1, comprising a first electrical and coolant network and further comprising a second electrical and coolant network having the same configuration of the first electric and coolant network, and the second electrical and coolant network being arranged as a parallel network to the first electrical and coolant network. ### Claim 15 (depends on 14) The cooled electrical conduction network according to claim 14, wherein one or more electrical or coolant connection is established between the first electrical and coolant network and the second electrical and coolant network to bypass a section of the first electrical and coolant network. ### Claim 16 (depends on 1) The cooled electrical conduction network according to claim 1, wherein each of the section enclosures of the cooled electrical conduction network is sealed within outer rigid walls and is separate from other section enclosures of the cooled electrical conduction network. ### Claim 17 A method of servicing electrical equipment in a cooled electrical conduction network comprising: an electrical network divided into at least a first conductive section and a second conductive section, each of the first and second conductive section being connected to a respective electrical equipment having superconductive material that performs a respective operation during use and a coolant network for maintaining the temperature of a coolant in each of the first and second conductive section; wherein the electrical equipment and at least one of sections of the coolant network corresponding to one of the first and second conductive sections are housed in one of section enclosures; the coolant network comprising a coolant interface located between each of the first and second conductive section; wherein the electrical equipment is superconducting electrical equipment and the coolant interface is housed in an intermediate enclosure that is isolated from the section enclosures in the electrical conduction network; the method comprising the step of thermally isolating the first conductive sections from the second conductive section at the coolant interface. ### Claim 18 (depends on 17) A method according to claim 17, wherein following the step of thermally isolating the first conductive section from the second conductive section a pressure in the intermediate section and only one of the first conductive section or the second conductive section is raised relative to the other of the first conductive section or the second conductive section. ### Claim 19 (depends on 17) A method according to claim 17, wherein each of the section enclosures of the cooled electrical conduction network is sealed within outer rigid walls and is separate from other section enclosures of the cooled electrical conduction network. ### Claim 20 A cooled electrical conduction network comprising: an electrical network divided into two or more conductive sections, each of the two or more conductive sections being connected to a respective electrical equipment having superconductor material that performs a respective operation during use; and a coolant network for maintaining the temperature of a coolant in each of the two or more conductive sections, wherein the electrical equipment and each of sections of the coolant network corresponding to each of the two or more conductive sections are housed in each of section enclosures of the cooled electrical conduction network, the coolant network comprising a coolant interface located between each of the two or more conductive sections, wherein the coolant interface is housed in each of intermediate enclosures that is isolated from the section enclosures in the cooled electrical conduction network, and wherein the coolant interface comprises a coolant valve for isolating one section of the coolant network from other sections of the coolant network.