SU510082A1 - Oscillographic ferrometer - Google Patents

Description

(OSILLOGRAFIC FERROMETER

Magnetizer ferrometra comprises ellipsoidal unilamellar coaxial coils 1 wound around the tubular conductor with a constant pitch turns along the generatrix and successively included in a single turn secondary obmot 2 down-ku toroidal transformer 3. Tokovody solenoids connected coax 4, through the interior of which extends a reverse polsyut tokovod secondary winding. The coils of the solenoids, the secondary winding and the coax are flow-cooled. Ellipsoidal solenoids are wound with a constant density of turns according to the forming and functional ratio of their sizes.

The coaxially measured sample 3 in the air gap between the solenoids has a magnetization sensor (measuring coil), 6 connected in anti-series with the compensation coil 7, which is in the form of a secondary winding of a transformer, the primary winding of which is the secondary winding of a step-down transformer. The sensor floor is made in the form of a flat coil 8 superimposed on the surface of the sample.

Datum magnetization is connected to the input of integrator 9 of channel tf, the output of which includes phase shifter 10, and inputs of blocks for calculating differential accuracy 11 and loss calculation 12. Output of phase shifter is connected to inputs 5 of measuring instantaneous values of V and H 13, imaging unit of calibrated axes 7 and H 14 and auto switch 15.

The sensor is connected to the integrator of the H channel and the input of the differential permeability measurement unit. The output of the phase reflector connected at the output of the integrator is connected to the inputs of the strobe-pulse formation units 16, the instantaneous value measurement unit 7 and H, the loss calculation unit and the auto switch. The output of the strobe-pulse forming unit is connected to the modulating electrode 17 of the CRT unit 18 and the measurement units of the specified parameters, the outputs of which are connected to calibrators 19 and 20. The output of the axialization unit is connected to the CRT deflection plates via auto-switches.

The ferrometer operates as follows. When the magnetizing device is switched on, the magnetic field generated in the center of the air gap between the solenoids has an axial component.

R

51pF

Y -

 g

P.CcosP)

Mr. ..YA / 5G,

 R

L1P (1Г-Ф

P1R

- P | COS C G-FSH5 27rysGСj / сX)

Yao

where L is the density of amber revolutions along the generatrix;

 - azimuth angle of the elementary contour;

R, - Legendre polynomial;

p is the radius vector of the elementary cond. UD by the expansion of the dimensionless function in

range in powers of axial coordinate, x

but

G, C, CO) (0} | y -...) ...

H by solving the equation O (, / L, K, O) 0

At present, the above ratios are between TEN y, P c; P at which the second term of the decomposition turns into O and thereby ensures uniformity of the floor in the air gap.

An integrated and phase-corrected sensor signal H triggers a strobe pulse generator of adjustable duration, which forms a finger-mark at a given point of the magnetization reversal loop and synchronizes the operation of the instantaneous value measurement units 3 and H of the computing unit for differential reproducibility that performs the X j operation (3H / dt, total loss calculation unit performing the operation

2F52

P- / / :( H-dj) - (H-dj) J

The calibrated axes shaping unit limits the linear, decimally marked sawtooth axial sweeps of the axes to the amplitudes of the signals ' and H

After that, they are supplied by the auto-commutator to the plates of the CRT, alternating over the blue period with the signals (t) and H (t). Values, H, X, Rotschitayut calibrated in magnetic units, calibrators,

attached to the appropriate blocs.

Formula of the invention

An oscillographic ferrometer containing a magnetizing device in the form of a step-down transformer with an ellipsoidal solenoid with a constant step of turns along the generatrix included in a single turn

the secondary winding and the first one flow 1: cool ij: iv.e; jiriv-: ibHbie canap; ia: h;, - a; h #. j and field H with measuring and compensating coils, integrators, phase shifters, calculating devices with devices for acting on signals, a scanner unit with pulse generators for modulating the brightness of the beam and scanning the image axes, characterized in that, in order to improve accuracy and magnetic efficiency The magnetizable device is made in the form of coaxial ellipsoidal solenoids with air gaps, the geometrical dimensions of which are connected by the ratio - 0 1568К + 0.0822К -. 0 6gK-tO,, НО, 9, K, {OS (|) where is the radius of the working hole; L is half the length of the solenoid; I is the length of the air gap; K is the compression ratio of the generatrix; The magnetization measuring coils and the floor are located in the jKa3aHHoro center of the gap, the compensation roller is installed coaxial to the transformer secondary winding conductor, and the connecting current conductor is formed in the form of coaxial cylinders connected to the ends of the water supply with wide collectors, in the internal cavity of which the reverse current conductor is installed.