Large-section, uniform, adjustable stable-alternating magnetic field generating device and method

Abstract

The invention provides a large-section, uniform, adjustable stable-alternating magnetic field generating device and method. The device comprises a magnetic closing body formed by a round upper cover (2), a round lower cover (3) and an annular shell (4); upper and lower magnetic yoke plates (5) and (6) are oppositely arranged in the magnetic closing body; a solenoid coil (8) is wound on each cylindrical coil support (7); a plurality of vents (1) are distributed in the annular shell (4); the distances between the upper and lower magnetic yokes can be adjusted by selecting the cylindrical coil supports with different heights to be suitable for test samples with different heights; a coil skeleton is supported between an upper cover and the upper magnetic yoke plate; the coil skeleton, the upper cover and the upper magnetic yoke plate are fastened into a whole by bolts (9), and are used as both a large-section magnetic pole and an openable part of the device for taking and placing the samples; the lower magnetic yoke plate is fixed with the same method and can be used as both a magnetic plate and a carrying platform; the solenoid coil is subjected to direct current and is homogenized by the magnetic yoke plates to generate a large-section uniform adjustable stable magnetic field; and the solenoid coil is subjected to alternating current to generate a large-section uniform alternating magnetic field.

Description

technical field [0001] The invention relates to the generation of a large-area uniform axially stable and alternating magnetic field (including sub-magnetic field) with continuously adjustable magnetic flux density, which belongs to the technical field of magnetic field generation and control. Magnetic field generating device and method. Background technique [0002] With the deepening of manned spaceflight technology and the development of the Moon and Mars programs, the submagnetic environment, one of the three elements of space, is a cosmic environmental factor that humans must overcome in future space exploration, just like microgravity and cosmic radiation. In the future, astronauts will be exposed to the submagnetic field environment for a long time, which may bring potential harm to the physical and mental health of astronauts. The study of submagnetic field biological effects and its mechanism will provide a theoretical basis for the space protection of related mann...

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the relatively fixed size of the permanent magnet magnetic field in the prior art, unable to obtain continuously adjustable magnetic field and alternating magnetic field; Helmholtz coil space utilization rate is low, unable to produce large-scale uniform magnetic field and other technologies Problem, the present invention provides a large-area uniform adjustable stable and alternating axial magnetic field generating device and method

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