SU391677A1 - DEVICE FOR SIGNALING THE EMERGENCY MODE OF A THREE-PHASE GYRO MOTOR - Google Patents

Description

one

This invention relates to devices for the protection of gyroscopic devices.

The known device containing a transformer sensor with two signal windings connected in series with the windings of the gyromotor in two phases of its power supply (the sensor output is connected opposite to the threshold unit through the secondary unit, the output of which includes the actuator and the source of the threshold voltage) does not have sufficient sensitivity.

To increase the sensitivity in the proposed device, the source of the threshold voltage is connected between the same two phases, which include the signal windings of the transformer sensor.

The drawing shows a schematic diagram of the described device.

The device contains a transformer signal sensor 1, two signal windings of which are connected in series with the windings of the gyromotor 2 and in series with each other. The output of the transformer sensor of the signal / is connected in opposite with the threshold unit 3 through the comparison unit 4. The comparison unit load is the actuator 5. For supplying the threshold unit 6 is the source of the threshold voltage 6, which is connected between the same two phases winding transformer signal sensor.

2

The outputs of the transformer signal sensor / and source 6 are filled with a full-wave rectifier circuit, followed by smoothing. The threshold unit 3, the comparison unit 4 and the executive body 5 are made according to standard schemes.

In the normal state of the electrical circuits of the gyromotor 2, the signals at the output of the transformer sensor signal / and the threshold

block 3 is close in magnitude; therefore, at the output of comparator 4, the signal is close to zero and executive authority 5 is in a prepared state. A short winding short circuit, an increased sliding or jamming of the gyromotor 2 at the output of the transformer signal sensor / increases the output signal, which leads to disbalance of the comparison unit 4 (a signal appears at its output, which leads to the actuator 5 to operate).

When the gyromotor loses any of the supply phases, in which the signaling windings of the transformer transformer signal are increased; the signal at the output of this sensor increases, at the output of the threshold unit 3, the signal decreases because the source of the threshold voltage 6 is connected between the same phases. All this leads to instant

unbalance of the comparison unit 4, and the executive body 5 is activated.

When the gyromotor loses a phase in which there is no alarm winding, both signal windings T | of the transformer sensor turn on in series and represent one winding;

Subject invention

A device for signaling emergency operation of a three-phase gyromotor, comprising

A transformer sensor with two signal windings connected in series with the windings of the gyromotor in two phases of its power supply, the sensor output is connected counter to the threshold unit through a comparison unit, the output of which includes an actuator and a source of threshold voltage, characterized in that increasing the sensitivity, the source of the threshold voltage is connected between the same two phases, which include the signal windings of the transformer sensor.

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