SU119214A1 - Device for electromagnetic interlocking of disconnectors with high-voltage switches - Google Patents

Description

The proposed device for electromagnetic interlocking of disconnectors with high-voltage switches relates to the well-known device consisting of a lock attached to the drive of the device and a portable electromagnetic key operator.

A feature of the proposed device, which simplifies it, is the inclusion of a switch operator with sliding contacts fixed on the fixed part of the operator and block contacts (in an amount corresponding to the number of blocked devices) built into the mobile holder of the operator into the coil circuit. After setting the specified switch to the position specified for this device and engaging the protrusions of the key with the lock cut-outs, it is possible to unlock the lock using the handle and move the sensor-rod embedded in the lock into the slot of the cage, where the sensor switches the block contact deciding the subsequent locking condition .

FIG. Figures 1 and 2 show a portable electromagnetic key operator in two projections; in fig. 3 and 4-lock, fixed on the drive of the device, in two projections.

In the stationary housing / operator (Figs. 1 and 2), a slider 2 with a movable core 3 is mounted. When current passes through the slider 2, the core 3, compressing the spring 4, slides over the keyed connection 5, through which it is connected to the rotary knob 6. The core 3 has at the end face a notch 7 under the corresponding protrusion of the lock axis.

Outside to the operator's body are attached: two diametrically arranged rack-clamps 8; a sliding bearing 9, in which the movable holder 10 of the operator rotates; the rear cover 11, under which are the sliding contacts of call 12 and the power supply 13 of the locking chains; two protrusions 14 with different configuration, fixture number 119214-2 -

the basic line, i.e., the conditional beginning for the reference of the sixty different pin-15 pin positions (angle a) relative to this base line.

On the back cover 11 there is an arrow 16 for reading out the secret to be installed.

The mobile holder 10 of the operator has sixty sets of block contacts 17. A pin 15 is fastened on a special tide 18. On the inside of the holder Yu has sixty recesses 19 under the head of the fixing struts 5. On the outer side of the holder engravings are marked with secrets. The ends of the auxiliary contacts 17 adjoin the space 20, where the wires of the operator’s electrical connection circuits with the pushed sixty contacts 21 of the call device and the power supply ring 22 of the circuit are located. Each set of auxiliary contacts 17 is controlled by a lock sensor 23 of the lock (Fig. 3) in a two-stage scheme. Depending on the position of the apparatus (when locked in this position), the sensor-rod 23 moves forward in two different positions: with a normal stroke and a double stroke.

Depending on this, the bases of the auxiliary contacts 17 are unfolded and fixed in two different positions, respectively, to the two conical surfaces of the sensor rod 23.

The lock has two notches 24 (Fig. 4) under the corresponding, protrusions 14 of the operator. The secret slot 25 under the hairpin 15 is located at an appropriate angle a (in all, sixty positions are possible) to the baseline. The locking rod 26 extends inside the other locking rod 27, thereby ensuring greater compactness. The sensor rod 23, which is at the level of the set of auxiliary contacts 17, is located in the rectangular extension of the housing 28.

Inside the lock, its axis 29 and all other parts are also located, ensuring the transmission of movement to the locking rods and the sensor rod.

The movable holder 10 of the operator is set against the desired mark and the secret of the lock with which it is intended to manipulate. This unambiguously determines the relative position: pin 15 secrets relative to the base line of the corresponding set of auxiliary contacts 17-against the lock sensor and sliding contact of the call 12-on the requested pressed contact 21.

Having established thus a mobile holder of the operator, it is possible to insert the operator only into the lock corresponding to a call. When this pin-secret 15 is included in the secret slot 25 of the lock, and the projections 14 fall into the notches 24 of the latter.

In the event that, under the blocking conditions, operation with this device is allowed, coil 2 receives power through the sliding power contact 13, ring 22, the corresponding communication circuit, the corresponding block contacts, the pressed contact 21 and the sliding call contact 12 connected to coil 2.

The core 3, striving to occupy a symmetrical position in the field, moves forward, compressing the spring 4. At the same time, it is not regarded with the rotary knob 6, with its notch 7 in the end face engages with the projection of the lock axis 29.

Thus, it is possible to perform the operation of unlocking and locking the lock with a rotary knob 6.

While locking the electric device in one position or another, the corresponding lowering rod 26 or 27, moving down, causes the sensor rod 23 to move forward and take one of two positions.

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