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Magnetic confinement method and self-demagnetization naval vessel

A technology of magnetic confinement and self-demagnetization, applied to ships, magnetic objects, ship weapons, etc., can solve the problems of time-consuming, labor-intensive and difficult modeling, and achieve the effect of convenient control and good magnetic confinement effect.

Active Publication Date: 2020-04-14
THE PLA NAVY SUBMARINE INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome that in the prior art, two means of temporary degaussing and fixed coil degaussing are mainly used to control the ferromagnetism of ships. The former requires regular degaussing, which is time-consuming and laborious, and the latter needs to obtain accurate ship magnetic data. , a technical defect that is difficult to model, thereby providing a new magnetic confinement method that requires neither temporary degaussing nor fixed coil degaussing

Method used

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  • Magnetic confinement method and self-demagnetization naval vessel
  • Magnetic confinement method and self-demagnetization naval vessel

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Embodiment 1

[0055] This embodiment provides a magnetic confinement method, specifically a method for magnetically confining a hollow magnet, including the following steps:

[0056] S1 prepares magnetically permeable structural parts;

[0057] S2 arranges the magnetically conductive structure inside the body to be degaussed, and provides a magnetic field line loop inside the body to be degaussed for the external magnetic field of the body to be degaussed, wherein the body to be degaussed is a hollow magnet.

[0058] The principle of the above-mentioned magnetic confinement method is as follows: Figure 1-2 As shown, when no magnetic permeable structure is added, such as figure 1 As shown, the magnetic field lines of the main body to be degaussed are closed outside the main body to be degaussed, and the external magnetic field strength of the main body to be degaussed is high; after adding the magnetic conductive structure, as figure 2 As shown, the magnetically conductive structure prov...

Embodiment 2

[0073] This embodiment provides a self-degaussing ship, including: a ship main body with an internal cavity; a magnetically conductive structural member arranged inside the internal cavity of the ship main body, providing the external magnetic field lines of the ship main body in the A loop of magnetic field lines inside the ship's main body.

[0074] Compared with the existing ships, the self-degaussing ship of this embodiment is equipped with a magnetically permeable structural member, which can change the magnetic field lines of the permanent magnetism and the induced magnetism of the ship from forming a magnetic circuit outside the ship to forming a magnetic circuit inside the ship , so as to achieve the purpose of "degaussing"; compared with the prior art, the self-degaussing ship of this embodiment has changed the original thinking of "degaussing", and the magnetism is constrained inside the ship, without the need to regularly go to the degaussing station or use the degau...

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Abstract

The invention provides a magnetic confinement method and a self-demagnetization naval vessel. The magnetic confinement method comprises the following steps: S1, preparing a magnetic conductive structural member; S2, arranging the magnetic conductive structural member in a to-be-demagnetized main body, and providing a magnetic field line loop located in the to-be-demagnetized main body for an external magnetic field of the to-be-demagnetized main body; wherein the to-be-demagnetized main body is a cavity magnet. The magnetic confinement method is different from the prior art that a temporary coil or a fixed coil is adopted to generate the magnetic field which is opposite to the magnetic field direction of the to-be-demagnetized main body (such as a naval vessel) and equal in size to demagnetize, instead, the magnetic field line loop is established in the to-be-demagnetized main body, and the magnetic loop of the to-be-demagnetized main body is changed, so that the originally closed magnetic field line outside the to-be-demagnetized main body is closed from the inside of the to-be-demagnetized main body, the magnetic field line outside the to-be-demagnetized main body is reduced or even disappears, and the purpose of magnetic confinement is achieved.

Description

technical field [0001] The invention relates to the technical field of ship degaussing, in particular to a magnetic confinement method and a self-degaussing ship. Background technique [0002] Ships made of steel form a ship's magnetic field under the magnetization of the earth's magnetic field. According to the ferromagnetic properties of ship steel, the magnetism corresponding to the ship's magnetic field can be divided into two parts: permanent magnetism and induced magnetism. The permanent magnetism is formed during the construction of the ship. In addition, after the ship is launched into the water, it is impacted by shock waves or explosions during navigation, or when vibrations are generated due to high-speed water hammer, etc., the permanent magnetism will change; if the ship is in a certain If the sea area of ​​a magnetic latitude is active for a long time, its permanent magnetism will gradually approach a certain value. Only when the magnetic latitude zone is chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F13/00B63G9/06
CPCH01F13/006B63G9/06
Inventor 王光辉于化鹏王旺刘绪范化喜赵士成胡立涛
Owner THE PLA NAVY SUBMARINE INST
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