WO2013038377A1 - Dispositif mobile flottant et submersible pour la démagnétisation de grands objets, notamment de bateaux - Google Patents

Dispositif mobile flottant et submersible pour la démagnétisation de grands objets, notamment de bateaux Download PDF

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Publication number
WO2013038377A1
WO2013038377A1 PCT/IB2012/054815 IB2012054815W WO2013038377A1 WO 2013038377 A1 WO2013038377 A1 WO 2013038377A1 IB 2012054815 W IB2012054815 W IB 2012054815W WO 2013038377 A1 WO2013038377 A1 WO 2013038377A1
Authority
WO
WIPO (PCT)
Prior art keywords
coils
sensors
demagnetization
fields
magnetic field
Prior art date
Application number
PCT/IB2012/054815
Other languages
German (de)
English (en)
Inventor
Wolfgang Ludwig
Original Assignee
Stl Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stl Ag filed Critical Stl Ag
Publication of WO2013038377A1 publication Critical patent/WO2013038377A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/006—Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
    • B63G9/00—Other offensive or defensive arrangements on vessels against submarines, torpedoes, or mines
    • B63G9/06—Other offensive or defensive arrangements on vessels against submarines, torpedoes, or mines for degaussing vessels

Definitions

  • the invention relates to a device for demagnetization of large objects, especially ships.
  • the causes for the magnetization of workpieces are very diverse and can not always be easily determined in practice. But there are usually artificially generated or natural magnetic fields, which act in the immediate vicinity of the objects. These may be unwanted type or of intentional origin, eg. As magnetic transport, linear oscillator, induction hardening, magnetic gripper, magnetic clamping devices, etc.
  • a larger number of atoms are always aligned uniformly. This uniform area can be viewed from the outside as a district (Weissscher district). If these districts also have the same preferred orientation, the workpiece is measurably magnetic. For many applications it is important that the installed metal components are not magnetic. However, since these do not have this property, a process of demagnetization is necessary.
  • the demagnetization is effected by the fact that the homogeneous orientation of the Weiss districts destroyed by external influences and a disorder is generated, so that the magnetic effect of the individual districts outwardly neutralized. In practice, the following methods are used for demagnetization in particular:
  • the object is placed in a strong alternating magnetic field, which is slowly reduced in its strength to zero, often
  • the object is transported at a slow and constant speed through a strong alternating magnetic field.
  • the article is heated to over 800 ° C (above the Curie point) and slowly cooled in a magnetically neutral location (exposed only to the magnetic field).
  • Degaussing coils is necessary. Since the arrangement of these coils is often located in the area of the shore, to provide the necessary energy
  • the systems are also equipped with magnetic field simulation coils for conditioning the Earth's magnetic field and with sensors for signature measurement.
  • the reason for this is that the geomagnetic field or its strength at different locations has different values in the horizontal and / or vertical direction. Since these values are known, this situation can be adjusted by means of the magnetic field simulation coils and thus an optimum demagnetization can be brought about for these areas.
  • the so-called magnetic signature of the object can be recorded and evaluated by means of sensors (signature measurement). Besides the magnetic signatures are
  • the discoverability can, for example, in the case of a homing head, lead to "intrusion” and thus, with a high probability, lead to a hit.
  • Cage-shaped systems are known from the prior art, in which the ship is stationary and is located in the center of the cage. These cage-shaped systems are mainly known in the development of magnetic field simulation systems that contain the magnetic field simulator coils and magnetic field sensors, but no demagnetization coils. These systems are also not realized as mobile, compact, one-piece systems.
  • the demagnetizing coils, the magnetic field simulation coils and the magnetic field sensors are each separately fixed and anchored in the ground or on the seabed.
  • the cage-shaped systems are very complex in their construction, since both the mechanical coils and their brackets and the sensors must be anchored at precisely defined locations on the seabed and the system must be built in the sea or a bay, the
  • the basic idea of the invention is to simulate coils and
  • Degaussing coils i. Fields for demagnetization
  • Device is designed, which additionally has the property of being able to raise or lower by suitable floating body. Furthermore, sensors are provided which determine by measurements the signature of the object to be demagnetized, which represents the essential result of the demagnetization procedure.
  • the mobile demagnetizer offers several advantages over conventional systems.
  • the device can be built, integrated and tested ashore, since all essential parts such as coils and sensors and even the power sources and sensor distributors can be integrated into a single compact structure. This results in a significant cost advantage, which is that no
  • the cage-like fully formed structure can be watered after integration and testing like a ship's dock and transported to the desired location.
  • the transport can be done by ship.
  • buoyancy body By provided buoyancy body, the location can be chosen freely.
  • the mobile arrangement is also a
  • the mobile demagnetization system also has the advantage that it can be used from any location, even if it has already been implemented in one place. The reason for this lies in the mobile design that makes the device comparable to a dry dock
  • Demagnetization process applied to the magnetic fields in all three directions is possible, in which the plant in which is firmly anchored for the waterway to be demagnetized surface water optimal depth.
  • the sensors already installed and calibrated at the factory for the measurement of the signature of the object as well as for the determination of the
  • the mobile demagnetization system can thus also operate invisibly for satellites.
  • the particularly advantageous placement in east-west direction with respect to the longitudinal direction of the device can be realized almost everywhere.
  • the water depth can be adapted to the draft of the vessel to be treated. This can also treat ships with a very large draft. If particularly large or long ships are to be demagnetized, a second system can be docked. Thus, the system is freely scalable and can be adapted for the corresponding application.
  • the system can temporarily submerge to escape the influence of these environmental factors.
  • FIG. 2 shows a schematic view of the device according to the invention according to FIG. 1, but in contrast to FIG. 1 with arranged floating bodies;
  • FIG. 2 shows a schematic view of the device according to the invention according to FIG. 1, but in contrast to FIG. 1 with arranged floating bodies;
  • Fig. 3 is a schematic view of the inventive device, but in contrast to Figs. 1 and 2 with stand elements with variable length and auxiliary devices integrated in the device with floats, coils and sensors.
  • the inventive device V consists of a stable non-magnetic framework. 1
  • This framework 1 is constructed like a cage and so designed to form an enclosed space 10.
  • This enclosed space 10 is dimensioned such that it can accommodate objects such as a submarine or ship, which is not shown in detail in the drawings.
  • the enclosed space 1 0 is formed parallelepiped in the embodiment shown here.
  • the invention is not limited to this form. Rather, all forms are possible that have the property to process the
  • the framework-like structure is preferably by a rod or
  • one or more Entmagnetisierspulen 2 are used.
  • the demagnetizing coils 2 are not necessarily limited to the longitudinal direction of the device V.
  • one or more magnetic field simulation coils 3 are provided. These magnetic field simulation coils 3, the coils for longitudinal fields 3a, coils for transverse fields 3b and coils for
  • one or more magnetic field sensors 4 are arranged within the framework 1.
  • the individual demagnetization coils 2 are arranged spatially different in the framework and have the function to demagnetize the enclosed object.
  • the magnetic field simulation coils 3 have the function to simulate the respective geomagnetic field, so that the desired
  • the degaussing coils 2 are arranged in the illustrated plane XY. These generate the corresponding longitudinal fields. Several such demagnetization coils 2 are arranged at a distance from each other.
  • An alternative embodiment proposes that a plurality of demagnetization coils 2 are arranged within the framework 1, wherein these are arranged on the one hand in the plane XY, XZ and YZ. By an appropriate control can also be effected that these demagnetization coils 2 at the same time
  • Magnetic field simulation coils 3 are.
  • the coils in particular the demagnetization coils 2, can advantageously also be part of the framework structure directly and assume supporting functions.
  • sensors 4 are fixedly arranged in the framework structure of the device V. To analyze the signature of the object to be demagnetized
  • Sensors can also be used to stabilize the position of the entire device V.
  • the device V can advantageously also be produced in such a way that, in the case of metallic construction elements, large-area, electrically closed conductor tracks are avoided in order to reduce the occurrence of eddy currents during operation of the installation.
  • the structure preferably has one or more floating elements 5, which allow the device V initially to build up and calibrate on land, and then float transported by water and targeted on
  • the floating elements 5 can also be integrated into the framework structure or, for example in the form of self-contained tubes, themselves be parts of the framework structure.
  • the floating elements 5 can be advantageously equipped with a variable lift.
  • floating elements 5 and active buoyancy elements such as propeller drives, screw drives or otherwise common in ships propulsion elements can be used.
  • Floating elements 5 can also be formed by transport ships, which are released again after transport from the system.
  • An advantageous embodiment of the floating elements 5 is that one or more elements carry a significant portion of the weight permanently, and the residual weight of additional floating elements, which are not shown in the drawings, is taken over, the lifting force are replaced when lowering by cranes, so that lowering without tilting can be realized safely.
  • additional floating elements can be advantageously designed as active floating elements.
  • the system can be towed by tugboats floating or submerged to the place where it is to be installed.
  • the mobile device has stand elements 6 (FIG. 3), preferably of adjustable length, in order to prevent unevenness of the floor and floor
  • the system can be adapted to the different draft of the ships to be demagnetized or measured.
  • auxiliary devices 7 are integrated into the mobile demagnetization system: Power sources for operation of the demagnetization and simulation coils. This significantly reduces infrastructure work on site.
  • Demagnetizing system which consists of winches, for example.
  • the device V can be constructed modularly, for example by several shorter systems are placed one behind the other and thus represent a system for the demagnetization of large ships.
  • the device V can also be made submersible, the depth being given either by the arrangement of the floating elements 5, which are attached to the structure by ropes and can be above the structure, or by an active one Stabilization such as dynamic
  • Earth magnetic field can be corrected by a corresponding correction in the processing of the magnetic field data, in particular when the device V is equipped with angle and yaw rate sensors.
  • the device V according to the invention as has been described above, a system is provided with which in a very efficient manner large
  • Objects such as ships, can be demagnetized.
  • the device can exercise their technical function both above water and under water. Due to the framework-like or cage-like structure combined with floating elements, it is a mobile system that can be installed in different locations, even independently of the actual ones
  • Power supply can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

L'invention concerne un dispositif de démagnétisation de grands objets, comprenant une structure présentant des bobines de démagnétisation disposées dans ladite structure. L'invention est caractérisée en ce que le dispositif (V) est conçu sous forme de cage et en ce qu'il est prévu un espace clos (10) pour contenir pleinement l'objet, les bobines de production de champs magnétiques étant disposées fixes spatialement à l'intérieur du dispositif (V), lesdites bobines produisant au moins des champs de démagnétisation, au moins dans la direction longitudinale ainsi que les champs longitudinaux (3a), les champs transversaux (3b), les champs verticaux (3c) nécessaires pour la simulation du champ magnétique, et les capteurs (4) pour les mesures de signature étant montés fixes dans le dispositif (5). Le dispositif (V) possède de préférence un ou plusieurs éléments flottants (5) qui permettent d'édifier et d'étalonner le dispositif (V), tout d'abord à terre, puis de le transporter, flottant, sur la voie navigable, et de le faire descendre de manière appropriée à l'endroit voulu.
PCT/IB2012/054815 2011-09-16 2012-09-14 Dispositif mobile flottant et submersible pour la démagnétisation de grands objets, notamment de bateaux WO2013038377A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011053683 2011-09-16
DE102011053683.3 2011-09-16

Publications (1)

Publication Number Publication Date
WO2013038377A1 true WO2013038377A1 (fr) 2013-03-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/054815 WO2013038377A1 (fr) 2011-09-16 2012-09-14 Dispositif mobile flottant et submersible pour la démagnétisation de grands objets, notamment de bateaux

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WO (1) WO2013038377A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018131564A1 (de) 2018-12-10 2020-06-10 Stl Systems Ag Entmagnetisierungs- und Signaturvermessungsanlage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891502A (en) * 1957-01-28 1959-06-23 Jr John L Cochran Automatic degaussing control system
GB1303801A (fr) * 1965-07-28 1973-01-24
EP0971376A1 (fr) * 1997-08-22 2000-01-12 Zakrytoe Aktsionernoe Obschestvo Nauchno-Proizvodstvenny Tsentr "Technologiya I Effektivnost" (NPTs "Technoef") Systeme multi-fonctionnel de demagnetisation d'objets ferromagnetiques
US6798632B1 (en) * 2002-06-13 2004-09-28 The United States Of America As Represented By The Secretary Of The Navy Power frequency electromagnetic field compensation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891502A (en) * 1957-01-28 1959-06-23 Jr John L Cochran Automatic degaussing control system
GB1303801A (fr) * 1965-07-28 1973-01-24
EP0971376A1 (fr) * 1997-08-22 2000-01-12 Zakrytoe Aktsionernoe Obschestvo Nauchno-Proizvodstvenny Tsentr "Technologiya I Effektivnost" (NPTs "Technoef") Systeme multi-fonctionnel de demagnetisation d'objets ferromagnetiques
US6798632B1 (en) * 2002-06-13 2004-09-28 The United States Of America As Represented By The Secretary Of The Navy Power frequency electromagnetic field compensation system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018131564A1 (de) 2018-12-10 2020-06-10 Stl Systems Ag Entmagnetisierungs- und Signaturvermessungsanlage
WO2020120145A1 (fr) 2018-12-10 2020-06-18 Stl Systems Ag Dispositif de démagnétisation et de mesure de la signature
US11535351B2 (en) 2018-12-10 2022-12-27 Stl Systems Ag Demagnetization and signature measurement system
TWI816944B (zh) * 2018-12-10 2023-10-01 瑞士商Ｓｔｌ系統公司 消磁和磁跡量測設備
DE102018131564B4 (de) 2018-12-10 2024-02-08 Stl Systems Ag Entmagnetisierungs- und Signaturvermessungsanlage

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