SU873163A1 - Device for detecting short-circuited turns in torroidal transformers and chokes - Google Patents

Description

(54) DEVICE JtJW DETECTION OF SHORT CAMERA

WHIPS IN UPHOLSTERS OF TORROIDAL TRANSFORMERS

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The invention relates to electrical measuring equipment and can be used to create devices for controlling the quality of the windings of toroidal transformers and chokes.

A device for detecting short circuits of closed coils in the windings of toroidal transformers and chokes is known, comprising a generator, a Q transformer, a voltage divider switch, a display unit and a link 1.

A disadvantage of this device is the dependence of its sensitivity on the diameter of the drive.

The closest in technical essence is a device containing an alternating voltage source, a magnetizing winding, an electromagnetic probe, the output of which through 20 amplifiers is connected to the indicator input, and a winding mechanism with pressure rollers 2.

The disadvantage of this device is the low accuracy and the great complexity of finding short-circuited turns.

The purpose of the invention is to improve the accuracy and reduce the time of detection of short-circuited turns. TO AND THROTTLES

The goal is achieved by the fact that the device for detecting short-circuited turns in the windings of toroidal transformers and chokes, containing a source of alternating voltage, a magnetizing winding, an electromagnetic probe, the output of which through an amplifier is connected to the indicator input, and a winding mechanism with pressure rollers, is equipped with an air core excitation winding, and the magnetization winding is made in the form of a detachable electrically conducting loop awn rotation about an axis combined with the axis of the winding mechanism with pinch rollers r wherein electromagnetic probe is fixedly installed inside the magnetizing coil, the inner plane of which passes through the air gap of the core ohvatyvaemly excitation winding whose output is connected to the outputs of the AC voltage.

The drawing shows a constructive electrical circuit of the device.

The device comprises an air gap core 1, excitation winding 2, alternating voltage source 3, winding mechanism (spool) 4 with pressure rollers 5 and a SIT-ZU machine for torroidal winding of current, and spool 4 is simultaneously a magnetizing winding for a winding core 7, rotated by rollers 8, electromagnetic probe 9, amplifier 10, indicator 11 and wire margin 12.

The device works as follows.

The excitation winding 2 of the core 1 is connected to a source of alternating voltage 3 and the drive of the rollers 5 and b rotates the spool 4 with a reserve of wire 12 wound on the core 7 fixed in the rollers 8 which rotate the winding core by the winding step. When this electromagnetic probe 9 is connected to the amplifier 10 and indi-. boats 11, measures the level of the floor near the place of formation of the coil on the core 7.

When an excitation winding is connected to an alternating voltage source in the magnetizing winding passing through the air gap, an alternating current is induced by which the core to be wound is magnetized. The magnetizing winding, rotating with the winding device, does not cause any difficulties for winding and can be installed on any type of machine for toroidal winding of the ring class. The electromagnetic probe is not positioned, since there is no need to move it, because the winding toroidal core rotates, and the electromagnetic probe is installed inside the magnetizing winds near the place where the coil formation occurs. Thus, indications coil is produced immediately at the moment of its formation. This makes it possible to easily eliminate short-circuit. .turn and continue winding with the same wire. Since the control k.z. turns are carried out in the process of winding, then after the end of winding, the tap-off implies the need for a control operation.

invention formula

A device for detecting short-circuited coils in the windings of toroidal transformers and chokes, containing a source of alternating voltage, a magnetizing winding, an electromagnetic probe, the output of which through the amplifier is connected to the indicator input, and a winding mechanism with pressure rollers, characterized in that, in order to increase accuracy and reduce the time of detection of short-circuited turns, it is equipped with a core with an air gap and an excitation winding, moreover, the magnetization winding is designed as a connector ring-shaped electrically conductive contour mounted rotatably around an axis aligned with the axis of the winding mechanism with pressure rollers while the electromagnetic probe is fixed inside the magnetize winding whose internal plane passes through the core air gap covered by the excitation winding whose conclusions are connected with the outputs of a variable voltage source.

Sources of information taken into account in the examination

1. Avt {SKy certificate of the USSR 411395, cl. G 01 R 31/06, 1970.

2. USSR author's certificate for application no. 2548776,

cl. G 01 F (31/06, 1978 (prototype).

Claims (1)

Claim A device for detecting short-circuited turns in the windings of toroidal transformers and chokes, containing an alternating voltage source, a magnetizing coil, an electromagnetic probe whose output is connected to an indicator input through an amplifier, and a winding mechanism with pressure rollers, characterized in that, in order to improve accuracy and reduce time, detection of short-circuited turns, it is equipped with a core with an air gap and an excitation winding, moreover, the magnetization winding is made in the form of a detachable a conductive circuit of annular shape, mounted rotatably around the axis combined with the axis of the winding mechanism with pinch rollers, wherein the electromagnetic probe is fixedly installed inside the magnetizing coil inside the plane which passes through the air for ·? core gap covered by the field winding, the terminals of which are connected to the outputs of the AC voltage source. I