SU81787A1 - Automatic synchronizer for switching on AC machines - Google Patents

Description

The subject of the invention is a device by means of which synchronization and automatic switching on of machines with alternating current for parallel operation is performed.

The proposed automatic synchronizer differs from the known ones in that its design makes it possible to regulate the timing of the advance of the current in the control circuit with respect to the response time of the switching device. Thus, the moment of switching on of AC machines can be chosen as the most suitable.

FIG. 1 shows the kinematic scheme of the device proposed; in fig. 2nd electrical circuit.

The proposed device (Fig. 2) consists of an asynchronous motor (relay) 23, the stator windings and the rotor of which are connected to synchronized circuits 21 and 22.

A bevel gear 2 is mounted on the shaft / (Fig. 1). It is engaged with the same gear and 17. The gear 3 is made of an insulating material. A radial slit 7 is cut in it, in which a spring-loaded lever 8 is installed, is supported1, on a cam disc 4, provided with a protrusion 6. The cam disc is mounted concentric to the shaft 5 and is electrically isolated from it.

A permanent magnet 14 is fastened to the shaft 16, partly included in a light aluminum drum 12, mounted on cores in supports 10 and 18 and held in a rest position by a helical spring 11. A slot 13 serves to pass the leg of the support 18. wall drum. Plate 9 is attached to the drum.

The switching on impulse is applied when the plate 9 comes into contact with the lever 8, for which the wires of the circuit are connected to the crown maime 4 and to the spring 11. The cam washer 4 is set so that at the moment of convergence of the phases the lever 8 is located at the middle of the protrusion 6. and the spring //

Up to 81787

set so that the plate 9 in the state of the noko drum is in the same radnal plane.

The contact between the plate and the lever is possible only when the lever passes over the protrusion b. The action of the device of the law does not sleep;: when the speed of convergence of the phases is too painful, the plate goes beyond the angle of the action of the core 6, and the imusus does not move. At a sufficiently low convergence rate, when the plate deflection is small, a pulse is applied. The impulse will be delivered -, always at a constant lead time, since yiOJi from the jupep of the drum is directly proportional to the speed of the marnsrra movement.

For setting. The actuator lever 15 is activated with proper response time with a graduated scale, with the help of cat (; |) the magnet is shifted axially to shaft 16. The longer the 15 response time, the more 34MTiHg should be deeper than the set; 1n the J2 drum. This increases the coupling ratio of the hedgehog: 1m and the drum and the deflection angle of the plate 9 age a tl.

The protrusion 6 of the cam) OW 1 of the pitch 4 is skewed along the patterns and the front axle washer in axial direction, with the washer mechanically connected to the stock / 5 and mixed with the movement of the magnet. Pe | imena ip ippi and it is necessary to compensate for the change in slip of a three-phase relay when there is a change in the speed of the relay shaft, at which a pulse is applied to the control circuit. When the phases of the locking device are in contact, the contacts of the lever 8 and the plastic 9. As a result, an impulse i, an intermediate relay 19 is applied. The latter triggers both n) and puts the device 20 on for 10 hours.

P rede Nt e t and z about b ete e and u

1.Automatic synchronizer for switching on machines of simultaneous current for parallel operation, equipped with a three-phase vrash. Iynyms relay, the windings of which are connected to synchronized prices, from and for the purpose of supplying ahead time supplying a pulse for switching on, the relay shaft of one bevel gear is connected with a permanent magnet, turning a IMM alyuminian drum with a spring and a movable contact of the control circuit off it. Yukchel synchronized mapshi ii, and through the second copy six gear connected with a reinforced pair of the moving contact of the same chain of management, slide your end of the fixed cam washer, and also radially in front of |, Cygnus, in the slot of the conical P1 center closing the circuit, control when the current control circuit is switched on.

2. Synchronizer no. 1, excl. HUJ and with what, with the purpose of. In order to adjust the ispeMeiui of the advance, it is not possible to push it with axial discontinuity along the axis of the metal drum, on which the iodovial contact of the control circuit is fixed.

3.S1P hrsi1; congestion by im. p 2, from the fact that, in order to comify the change of the slip of the rotating three-phase relay of the nrm of the speed of the cranking speed, at which the pulse is applied to the circuit, the cam washer has a protrusion that is sloped According to the pattern, it is made movable in axial nanavlen1N (and its movement is from the same device that serves for the shuffle specified in step 2, the constant magnet magnet.).

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