OPEN-TYPE CONDUCTION COOLING NUCLEAR MAGNETIC RESONANCE SUPERCONDUCTING MAGNET SYSTEM

摘要

An open-type conduction cooling nuclear magnetic resonance superconducting magnet system. Inner support rods (9) are disposed between an upper and a lower superconducting coil (6, 11). Magnetic heat exchangers (8) are respectively welded on an upper and a lower coil frame (7, 12). The upper and lower superconducting coils (6, 11) respectively adopt a high-pressure helium gas vessel (4) as an outer support and stress support frame. The high-pressure helium gas vessels (4) and the upper and lower superconducting coils (6, 11) are installed in a low-temperature vacuum vessel (2), and the upper and lower superconducting coils (6, 11) are longitudinally and symmetrically arranged in the high-pressure helium gas vessels (4). An upper coil stress support structure (13) supports the upper superconducting coil (6), and a lower coil stress support structure (17) supports the lower superconducting coil (11). The upper and lower coil stress support structures are annularly arranged on an outer wall of the low-temperature vessel. A support beam of a C-shaped structure supports the whole weight of the system.