43 results about "Superconducting solenoid" patented technology

A configuration of an NMR apparatus is provided. In the NMR apparatus, a magnetic field space of higher uniformity is generated by split superconducting magnets. At the same time, it is provided with a cryo probe excellent in cooling capability and sensitivity between two superconducting solenoid coils constructed in very close proximity to each other. For this purpose, a probe coil provided between the two superconducting solenoid coils is so constructed that the following is implemented: a certain distance is ensured between a substrate with a coil formed thereon and another, and the substrates and spacer substrates for cooling are alternately laminated. The spacer substrates are cooled by a cold head of sapphire. When the probe coil is inserted in the same direction as a sample tube (direction perpendicular to the static magnetic field), the spacer substrates cannot be coupled directly by the cold head of sapphire. Therefore, they are cooled through a fixed substrate for thermal conduction of sapphire coupled with the cold head.

The invention provides a constant-tension winding machine for niobium titanium-copper superconducting solenoid coils, relating to a winding machine for superconducting solenoid coils. The invention solves the problems of complex winding process, high labor intensity of operators and low use ratio of equipment space of the current winding machine for superconducting solenoid coils. In the invention, an L-shaped portal frame is provided with two first slider linear guide rails and a first ball screw, and a double-track pulley is installed on a wiring arm. A wiring support arm of the wiring arm is provided with a wiring pulley, and a wire loading support arm of the wiring arm is provided with a wire loading pulley. A movable pulley is installed on a movable pulley axis support, and a wire loading tray is rotatably installed on a wire loading support. A superconducting solenoid coil to be wound is rotatably installed on a winding support, and a lead wire is led out through the wire loading tray and wound on the superconducting solenoid coil to be wound after moving round the wire loading pulley, one slideway of the double-track pulley, the movable pulley, the other slideway of the double-track pulley and the wiring pulley. The constant-tension winding machine is suitable for winding niobium titanium-copper superconducting solenoid coils.

A superconducting magnet system suitable for neurosurgery interventional operations. It mainly includes high-temperature superconducting magnets, G-M refrigerators, low-temperature Dewars, quench protection devices, and program-controlled power supplies. The high-temperature superconducting magnet is composed of three pairs of superconducting solenoid coils. Each pair of superconducting solenoid coils is composed of two layers of superconducting coils inside and outside. The two layers of coils are stacked, and each pair of coils is placed along an axis of the Cartesian coordinate system. , the axes of the three pairs of coils are perpendicular to each other, and the whole magnet forms an asymmetric open space. The magnet system operates in a cryogenic system protected by solid nitrogen. The invention is not only more convenient to use and operate, but also more stable in system operation, greatly reducing the possibility of magnet quenching; at the same time, the invention adopts a new coil structure to simplify the system and make the available space larger increase; the use of refrigerator conduction cooling and external solid nitrogen protection makes the system more reliable at low temperatures.

A superconducting magnet supporting and positioning system comprises a refrigerator (1), a low-temperature container (2), a cold conducting band (3), a superconducting solenoid coil (4), an upper suspension magnet (5), a side upper positioning magnet (6), a side lower positioning magnet (7), a lower suspension magnet (8) and connecting rods (9). After the superconducting solenoid coil (4) is electrified, electromagnetic repulsion is generated between the upper suspension magnet (5) and the lower suspension magnet (8) and the superconducting solenoid coil (4) to enable the superconducting solenoid coil (4) to be suspended in the air, and electromagnetic repulsion is generated between the upper side upper positioning magnet (6) and the side lower positioning magnet (7) and the superconducting solenoid coil (4) to enable the superconducting solenoid coil (4) to be positioned and free of declination. No heat contact exists between the magnets and the superconducting solenoid coil, so that transmission heat leakage of the superconducting solenoid coil can be reduced, and power of the needed refrigerator can be lowered.

The invention provides a method of cooling a superconducting magnet assembly includes thermally connecting a pulsating heat pipe to the superconducting magnet assembly and adding a liquid cryogen to the pulsating heat pipe. The superconducting magnet assembly also includes a coil former, at least one superconducting solenoid magnet comprising at least one superconducting winding wrapped about the coil former and configured to generate a magnetic field, and at least one pulsating heat pipe 10 thermally connected to the at least one superconducting solenoid magnet.