A method and system for automatically replenishing Dewar liquid nitrogen on-board a superconducting magnetic levitation vehicle

Abstract

The invention discloses a method and a system for automatically supplying Dewar liquid nitrogen on a superconducting magnetic levitation vehicle. The system includes: at least two sensors, a controller, a self-pressurized liquid nitrogen storage tank, a main solenoid valve, a plurality of secondary solenoid valves and an exhaust valve; the sensors are respectively arranged in containers filled with liquid nitrogen The top and the bottom are used to measure temperature; the controller is connected with each sensor, main solenoid valve, each secondary solenoid valve and exhaust valve respectively; the self-pressurized liquid nitrogen storage tank is connected with the main solenoid valve connected; the main solenoid valve is also connected with each secondary solenoid valve and exhaust valve; each secondary solenoid valve is respectively connected with the corresponding liquid nitrogen filling container. By using the method and system for automatically replenishing the vehicle-mounted Dewar liquid nitrogen of a superconducting magnetic levitation vehicle provided by the present invention, real-time control of the vehicle-mounted Dewar liquid nitrogen level and automatic filling of liquid nitrogen can be realized, which helps to save time and save Manpower, more efficient operation.

Description

technical field [0001] The invention relates to a high-temperature superconducting magnetic levitation technology, in particular to a method and system for automatically supplying Dewar liquid nitrogen on a superconducting magnetic levitation vehicle. Background technique [0002] Compared with the electromagnetic levitation (EMS) and electrodynamic levitation (EDS) technologies based on electromagnetic attraction and repulsion, the high-temperature superconducting magnetic levitation technology relies on the magnetic flux pinning between the high-temperature superconductor bulk and the external magnetic field to achieve self-sustaining Stable suspension. The high-temperature superconducting magnetic levitation technology lowers the temperature of the superconducting block into the superconducting state by soaking it in liquid nitrogen, and the superconducting block in the superconducting state interacts with the external magnetic field to achieve stable suspension. This te...

AI Technical Summary

Problems solved by technology

However, the traditional way of manually filling liquid nitrogen is time-consuming and laborious in actual use. Therefore, it is necessary to use a fast automatic liquid nitrogen supply device to timely supply liquid nitrogen to the vehicle-mounted Dewar.

Images