SU48830A1 - Thyratron time relay - Google Patents

Description

The time relay is one of the basic elements in automation and telemechanics. The development of these areas tehniki revealed a variety of requirements for such relays as in relation to. The nature of the driver's work (short or arbitrarily long or of a certain duration pulse; short or open) and in the nature of the operation of the executive circuit (short or open , reverse or E bypass delay, short circuit or opening for a certain period of time; blocked operation, etc.).

The author's certificate of the same article describes the thyratron time, in which the driver contacts are included in the anode circuit of the Thyrone, the grid of which through parallel connected capacitance and resistance is connected to the end of the electromagnetic relay, connected to the anode of the electromagnetic relay connected to the anode between the cathode and minus anode battery.

The proposed relay is a development of the relay according to the specified author's certificate and is intended to give an opportunity to receive the closure of the performance depot after a certain time interval AToK after a brief opening of the drive contact. The duration of the opening D to maintain the exposure D must be less than D, but longer than the time required for quenching the thyratron under the conditions of this scheme. If D, then the shutter speed will be equal to

In FIG. 1 shows the circuit of the proposed relay; FIG. 2-3-part of it in different versions. FIG. 1 digit / designates the master contact, digit 2 is a thyratron, digits 3 and 4 is a capacitor and an impedance in the circuit of the thyratron grid 2, digit 5 is the winding of the main electromagnetic relay, digit bi 7 is the relay contact 5, digit 8 is an auxiliary blocking electromagnetic relay, digits 9, W-contacts of relay 5, digits / -blocking breaker, digit 12 - voltage source, power supply circuit, and digit 75 - executive circuit.

The circuit state shown in FIG. 1 corresponds to the prepared position of the entire device. In this case, the thyratron is ignited, i.e. in the anode circuit of it, a current flows sufficient to energize the relay 5.

The operation of the device proceeds as follows. When the setting contact 7 is opened, the current in the anode circuit of the thyratron is interrupted and an induced h appears in the winding of the relay 5. D. s ,,

bbrashennaya plus to the grid of the thyratron. Due to this e. d. the capacitor 5 is charged, so that the grid of the thyratron 2 is under a negative potential with respect to the cathode. Following the charge of the capacitor 3, its discharge to resistance 4 begins. The parameters of the elements 3, 4, 5, 12 of the circuit are selected so that the grid acquires the igniting voltage after a specified time D.

Thus, when immediately after the opening of the master contact / it is followed by its closure, the thyratron will still not ignite and relay 5 will be without current for a period of time D. When the relay

5 stands without current, opens contact 7 in the executive circuit and closes contact 5, which triggers the auxiliary relay 8. The latter, through contact 9, blocks itself and simultaneously closes contact 10

6 executive circuit. Since the contact 7 is closed after the opening of the contact 7, during the considered operation cycle the executive circuit remains in the same inoperative state, i.e., open.

When the D thyratron time elapses: it ignites and the relay 5 is activated, which is accompanied by the opening of contact 6, but this is not reflected on the relay 8, since it is self-blocked by contact 9 and the actuator is closed in contact 7 (since contact Y is already closed earlier).

Thus, the actuating circuit closes through time D after the opening of the setting contact 7. If the latter closes after the time D, then the actuating circuit of the actuating circuit occurs simultaneously with its closure.

Exposure time D is convenient to adjust the capacitance of the capacitor 3 or leakage resistance 4.

FIG. 2 shows the contacts 7 and 10, respectively, of the relay 5 and 5 and their inclusion in the executive circuit when the latter is open. In this case, the momentary opening of the master contact 7 will be accompanied by the closing of the contact 7 and then the opening of the contact 10 so that the actuator circuit remains closed.

After the time D / relay 5 is triggered (due to the ignition of the thyratron) and in contact 7 opens the actuating circuit.

As already indicated, the actuator circuit in the described time relay after being triggered is blocked in this state. The circuit is released by the breaker 77.

For the case of operation of the described device for short-circuiting the driver contact to the circuit shown in FIG. 1, a control electromagnetic relay 14 is added with a control contact / to its winding circuit (shown by the dotted line in FIG. 1). The same relay 14, being included in the monitored circuit as a voltage or current indicator, allows the time relay to operate from a short voltage (current) pulse in the monitored circuit.

FIG. 3 shows an additional part to the main circuit of the time relay in case of its operation from the closure of the setting contact G for an arbitrary time. This is accomplished with the help of a capacitor 15 so that an arbitrarily long circuit of the setting contact G causes only a single short-term pulse of charged current through the winding of the control relay 14, accompanied by a brief opening contact 7. The resistance 16 serves to discharge the capacitor 75.

The dotted part in FIG. 3, i.e., a relay 77 with a limiting resistance 18 allows the device to operate from being opened for an arbitrary time of the setting contact 7. A relay 77, similar to relay 7, can be directly connected to the controlled circuit to operate the device voltage pulse or current of arbitrary duration in a controlled circuit.

The subject matter of the invention.

Claims (6)

1. A thyratron time relay of the New York Author's Certificate No. 45993, characterized in that, in order to obtain an executive circuit closure through after disconnection for a time shorter than D of the control contact /, contacts 6 of relay 5, closing when there is no current in its winding, are included in the auxiliary relay 8 circuit with interlocking contact and unlocking breaker //, - contacts of same 7 relay 5, opening in the absence of current in the winding of the latter, and the contacts JO of the relay 8, working on the circuit, are connected in series in the executive circuit 75. 2. Video change of a relay according to claim 1, characterized in that, in order to obtain an opening of the executive circuit, the relay 5 hours 8 is equipped with contacts 7 and JO, operating on the opening, connected in parallel and included in the executive circuit. 3. Change the relay on PP. 1 and 2, characterized in that, in order to get the actuating circuit to operate, after a certain period of time A after closing for a time D less than the setting contact 7, the latter is connected to the winding circuit of the auxiliary relay M controlling the content byte /. 4. Video change relay on PP. 1 and 2, characterized in that, in order to get the actuating circuit to operate, after a certain period of time after closing for any time of the setting contact /, the latter is connected in series with the capacitor 75 to the winding circuit of the relay J4 controlling the contact /, and the capacitor 75 is directly or through the calm position of contact 7 with leak resistance 76. 5. Modifying .pejje but clause 4, characterized in that, in order to get the actuator to operate, after a certain time of the actuator, after opening for any time of the control contact 7, the latter is connected in parallel to the relay coil / 7, which controls the contact 7. 6. Modification of the relay on PP. 3 and 5. characterized in that the relays 14 and, respectively, 77 are included in the monitored circuit so that they do not work from mechanical closure or opening of the contacts 7 or 7, but from a current pulse or voltage in the monitored circuit. FIG.