Device for measuring the orientation of the magnetic field

 

The invention relates to the physics of magnetic phenomena and can be used to simulate the interaction between the magnetized region and the differential rotation of the medium at different values of the magnetic Reynolds number. Like a well-known device proposed device contains a magnet with the possibility of angular displacement and two indicator. What's new is that the device is equipped with two cylindrical flywheels, between the flywheels made a gap, and the magnet is placed in the specified gap and hung in strands connecting the indicator lights. Axis wheels are parallel, and the magnet has a plane of symmetry. Each of the wheels is connected to a separate reversible motor, and a connection made through a detachable coupling. In addition, each of the wheels has a pulley on the possibility of connecting both wheels flexible transmission. One of the indicators turning filament is connected through a capacitive force sensor. Each of the wheels and connected with it the engine based on a common guide rail for movement of the engine along a specified track. The magnet is enclosed in a housing connected with the cylindrical damper, which swaledale magnetic field and its interaction with the differential movement of electrically conductive bodies at different values of the similarity criterion. 6 C.p. f-crystals, 12 ill.

The invention relates to the physics of magnetic phenomena and can be used to simulate the interaction between the magnetized region and the differential rotation of the medium at different values of the magnetic Reynolds number.

The known device for determining the characteristics of the magnetic field using mobile elements (international PCT patent no WO 01/01163, 2001, M CL G 01 R 33/02). A device for measuring the orientation of the magnetic field containing the magnet with the possibility of angular displacement and two indicator (Patent of Russia №2138813, 1998, M CL G 01 R 33/02).

The proposed device is intended for measuring the orientation of the magnetic field and its interaction with the differential movement of electrically conductive bodies at different values of the similarity criterion.

Like a well-known device proposed device contains a magnet with the possibility of angular displacement and two indicator.

What's new is that the device is equipped with two cylindrical flywheels, between the flywheels made a gap, and the magnet is placed in the specified gap and hung in strands connecting the indicator lights.

The axis of the flywheel p is the engine, moreover, the connection is made through a detachable coupling.

In addition, each of the wheels has a pulley on the possibility of connecting both wheels flexible transmission.

One of the indicators turning filament is connected through a capacitive force sensor.

Each of the wheels and connected with it the engine based on a common guide rail for movement of the engine along the specified rail.

The magnet is enclosed in a housing connected with the cylindrical damper, which freely enters the stationary cylindrical vessel.

The rotation of the flywheel, the proposed device provides a model of the differential movements of the medium relative to the magnetized region. Changing the speed of rotation of the flywheel and the gap between them allows to vary the magnetic Reynolds number.

The drawings are shown: Fig.1 - a device for measuring the orientation of the magnetic field (in section); Fig.2 - arrangement of the magnet in the gap between the flywheels in the plane passing through the axis of the wheels; Fig.3 is a view of the device from the top (along arrow a in Fig.1); Fig.4 - block suspension magnet (Fig.2 and 4 in an enlarged scale; Fig.5 - scheme of the experiment for the determination of the influence of the radius of the rotating bodies on the strength of the image is Le; Fig.7 diagram of the polar orientation of the magnet along the gap between two parallel moving bodies; Fig.8-12 diagrams of successive stages of changing the polarity of the magnetic field in the Earth's core (the direction of the field is shown by arrows, the length of which corresponds to its induction in selected areas).

Device for measuring the orientation of the magnetic field contains the magnet 1, the upper indicator 2 and the lower indicator 3.

The device is equipped with two identical cylindrical flywheels 4 and 5 made of aluminum. Between the flywheels made the gap 6. The magnet is placed in the specified gap and hung in strands 7, 8, connecting the upper indicator turns from the bottom.

Axis 9, 10 wheels are parallel, and the magnet has a plane of symmetry 11, which when the measurement must be aligned with the axes of the flywheels.

The shafts 12, 13 of the flywheel pass through the bearings 14, 15, secured in the racks 16, 17.

Flywheels 4 and 5 are connected respectively with reversing motors 18 and 19. Connection is made via a detachable coupling 20 and 21, which made the spikes 22 and openings 23 for thorns.

Bonded with flywheels part of these couplings made in the form of pulleys 24 and 25 with the grooves 26, 27 that allows you to connect both mobicast this gives the ability to match the speed of the flywheel in the mode of free rotation after engine shutdown or after disconnection of the coupling.

Each of the wheels and connected with it the engine based on a common guide rail 29, 30 to move the motor along a specified track. Rails mounted on the frame 31 by means of bolts 32, allowing the permutation to change the gap between the flywheels.

The magnet is enclosed in a holder 33 that is connected with the cylindrical damper 34 which freely enters the stationary cylindrical vessel 35 and contributes to the damping of the oscillations of the magnet. The damping medium are air or liquid (e.g. water) is poured into the vessel to level 36 located above the upper end of the damper 34.

Flywheels fenced vertical walls 37, 38 of organic glass, insulating the magnet from the air flow. On the walls has an upper turn indicators, including disk 39 with a circular scale (not shown) and the wheel 40 arrow 41. Under the disk 39 on the screw 42 is fixed capacitive force sensor 43, provided with a spring 44 and a glass of 45, in which holes 46 for wires 7, 8.

The lower the indicator includes an arrow 47, attached to the end of the clip 33. For a short shoulder 48 of the arrow screwed movable counterweight 49. Long shoulder 50 of the arrow is located above the scale 51 compensation.

Parameters device the spine rotation - 1...50 revolutions per second, the diameter of the magnet 25 mm, the length of the magnet 10...50 mm, which corresponds to the maximum magnetic Reynolds number 20...50. Materials: cylindrical portion of the flywheel, the ring magnet, posts, rails and frame - aluminium; shafts and couplings - chrome-plated brass; bearings - bronze bearings - stainless steel.

When using the device installing the first arrow 47 of the lower indicator to zero scale 51 compensation. After switching engines eddy currents in the flywheels repel poles of the magnet are oriented in the direction of the axis of rotation. Upon reaching the stationary mode register deviation of the arrow 47 of the lower indicator, then turn the wheel 40 to align the arrow 47 of the lower indicator with zero scale 51 compensation. The arrow 41 Limba measure the angle of rotation is judged the moment of forces, acting on the magnet to its original position when the rotation of the flywheel.

With increasing speed of rotation repulsive force of the magnet is increased, tending to a limit, which corresponds to the action of mirror reflection of the magnet surface of the flywheel. The power of the image increases with increasing radius of the flywheel. The influence of the curvature of the moving surface is 57 in order of increasing radius (Fig.5).

In the approximation of a flat surface (with a sufficiently large radius) orienting the action of the image shown in Fig.6 (one rotation of the flywheel, creating one image 58 of the magnet 1 and Fig.7 (a rotation of two wheels, creating two images 59, 60 of the magnet). The effect of orientation does not depend on the direction of rotation is the same whether they or the opposite. The orientation of the magnet close enough to the limit, is achieved when the value of the magnetic Reynolds number of 50.

The polar orientation of the magnetized region of the differential rotation of the environment is essential in the formation of the source of magnetic field in Earth's core. Under a pressure of 1.5...2 million atmospheres, the formation of the ferromagnetic layer in the region of the nucleus occupied by the alloy of iron and its oxide (Fe+FeO). This is facilitated by the following factors, which increases the exchange energy: the displacement of d-electrons pressure mainly from the coupled States, which reduces the size of the iron atom, the excitation of atoms by thermal radiation (maximum intensity which at 4000 corresponds To the quantum of energy of 1.8 eV), the separation of iron atoms by oxygen atoms.

The strain energy corresponding to the average single mind is OK than thermal energy (0.4 eV at 4000 K). Such high strain energy can serve as a source of increase of the exchange energy to the level that far exceeds thermal energy. The presence of impurities creates conditions for the crystallization of the hard magnetic alloy. Probably, considerable energy is released due to the decrease in volume caused by magnetostriction in these conditions, when the Curie point is not reached until the melting temperature.

The Earth's core, the outer surface 61 (Fig.8) has a radius 3470 km, is under the mantle. The core includes a solid metal subadra 62 with a radius of 1200 km, the region 63 iron sulfide, solid ferromagnetic layer 64 iron-oxide alloy (Fe+FeO), the outer transition layer 65, an outer layer of iron-oxide melt 66, the curing of which the pressure at a given depth is not enough.

Heating of the metal core (due to radioactive decay, differentiation of oxides and sulfides on the surface of the nucleus with a decrease in volume, as well as some other processes) leads to the melting of the first inner part of the ferromagnetic layer with the formation of the inner layer melt 67 and the inner transition zone 68 before ferromagnetic residue 69 source layer 64 (Fig.9). Then melt and on the first surface 61 of the core (Fig.10).

Partial and then complete melting of the initial ferromagnetic layer 64 disables the created magnetic field and stimulates the induction currents in the melt, which during the time of the diffusion attenuation (up to 10 thousand years) retain a magnetic field in the same direction.

Meanwhile, the heat liberated metal core, reaches the border of the mantle. The surface of the metal core, respectively, is cooled. This leads to a re-crystallization, which starts from the formation of the initial ferromagnetic layer 71 with the outer transition zone 72 (Fig.11). Together with area 72 crystallization front moves from the center of the core to its periphery.

Due to the relatively high initial magnetic permeability ferromagnetic layer 71 bypasses the residual magnetic field region 73 of the melt, closing the box itself. When this field in shunt layer 71 is directed opposite to the field in the field 73 of the melt and, consequently, the source field. Coexisting layers 71 and 73 with the opposite directions of the magnetic field form a double magnetic layer.

Further crystallization of the hard magnetic alloy layer 71 stores the new orientation of the field. The result is a ferromagnetic layer 74 Pregnana area 75 and the outer layer melt 76.

The next heat of the metal core is described cycle is repeated and ends the next polarity reversal of the Earth's magnetic field. Convection in the liquid part of the kernel is random and somewhat distorts the frequency of self-oscillating process of reverse polarity. Depending on conditions, there may be other variants of this process. In particular, education shunt layer may begin before complete melting of the initial ferromagnetic layer. Between the two ferromagnetic layers concluded layer of the melt.

In historical terms the magnetic field could be inherited from a cloud of matter that formed the Earth by accretion.

Transitional zones 65, 68, 72, 75 have a diffuse nature. Their thicknessdepends on the temperature:

=kT/(A/z),

where k is a constant of Boltzman, T is the temperature, And is assigned to the atom of substance kernel average energy of the volumetric strain, z is the depth from the surface of the Earth.

At T=4000 To the value ofclose to 200 km, which prevents a clear reflection of seismic waves from the ferromagnetic layers of the kernel that are identical in composition with OKRUGA magnetic field, containing the magnet with the possibility of angular displacement and two indicator, characterized in that it is provided with two cylindrical flywheels, between the flywheels made a gap, and the magnet is placed in the specified gap and hung in strands connecting the indicator lights.

2. The device under item 1, characterized in that the axis of the flywheel parallel, and the magnet has a plane of symmetry.

3. The device under item 1, characterized in that each of the wheels is connected to a separate reversible motor, and a connection made through a detachable coupling.

4. The device under item 1, characterized in that each of the wheels has a pulley on the possibility of connecting both wheels flexible transmission.

5. The device under item 1, characterized in that one of the indicators turning filament is connected through a capacitive force sensor.

6. The device under item 1, characterized in that each of the wheels and connected with it the engine based on a common guide rail for movement of the engine along the specified rail.

7. The device under item 1, characterized in that the magnet is enclosed in a housing connected with the cylindrical damper, which freely enters the stationary cylindrical SOS

 

Same patents:

Magnetometer sensor // 2287837

FIELD: measuring equipment, possible use for registration of ultra-low frequency variations of electromagnetic fields.

SUBSTANCE: for solving the problem, magnetometer sensor includes sensitive element, made in form of rod connected to base, with magnetic element rigidly held thereon, optical system, consisting of optically connected light radiation source, mirror, held on magnetic element of sensitive element, and light radiation receiver. Control block is electrically connected to source and receiver and light radiation. Lower end of rod of sensitive element is connected to base in jointed manner. Sensor of magnetometer is provided with actuator, which is made in form of piezo-engine of linear movements.

EFFECT: increased sensitivity with simultaneous increase in resistance to dynamic overloads of magnetometer sensor.

2 cl, 1 dwg

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