SU589419A1 - Device for controlling hydraulic valve - Google Patents

Description

(54) HYDROVALVE CONTROL DEVICE

one

The invention relates to the automatic control of hydroficated mine-fixed and fastened coal-mining complexes and units.

A device for the automatic control of a hydroficated shaft lining is known, in which the hydroalapane control is used to power the dining source.

The disadvantage of such a device is the difficulty of meeting the requirements of the power supply under intrinsic safety conditions.

It is also known that a hydraulic valve control device 2} comprising an electric drive, a battery, electromagnetic relays, thyristors, microswitches and DIOJSH.

This device is not sufficiently reliable due to the presence of a four-wire communication line with a control circuit and a plug connector in this circuit.

To ensure the reliability of the device, it is equipped with three inductive-capacitive oscillatory circuits: controlled by a generator, two keys controlling the frequency of the generator, the output of the amplifier and the connecting node, made in the form of a transducer

with a detachable core and a detachable secondary winding connected to parallel-connected inductive-capacitive oscillating circuits, the common point of which is connected to the cathodes of the thyristors and the negative terminal of the battery the second and third oscillatory circuits through other diodes are connected to the control electrodes of the corresponding thyristors, and the primary The transformer of the connecting node is connected via an amplifier to the generator output.

The drawing is a diagram of the proposed device.

Claims (2)

It contains a generator 1, the generation frequency of which can be changed under the action of control signals supplied to the inputs of switches 2 and 3 connected to generator 1. The output voltage of generator 1 through amplifier 4 is fed to the primary winding 5 of connecting node b, which is a transformer with a detachable core. Its removable secondary winding 7 is loaded into three parallel-connected inductive-capacitive oscillatory circuits 8-10 located in the hydraulic valve body 11. Total inductance point 12,13 and 14 circuits 8.9 and 10 are connected to the cathodes of thyristors 15 and 16 and to the minus of the battery 17. The inductances 12, 13 and 14 are connected via diodes 18 to the positive terminal of the battery 17, and inductances 13 and 14, in addition, through diodes 19 and 20 are connected to the control electrodes of the thyristors 15 and 16, respectively. In series with thyristors 15 and 16, electromagnetic relays 21, 22 and microswitches 23, 24 are turned on. Through the clocks of the relay 21,22, the supply voltage from the battery 17 is supplied to the electric actuator 25, which moves the valve flap to one of the two extreme positions corresponding to the on or off state of the hydraulic valve. In the absence of control signals at the inputs of keys 2 and 3, generator 1 generates at frequency f for which circuit 8 is impacted. The output voltage of the circuit is rectified by diode 18, providing recharge (recharge) battery 17. The recharge current is 6–10 mA when the voltage at the battery terminals is 13–14 in. When a signal is sent to turn on the valve to the input of the key 2 (or the switch to turn off to the input of the key 3), the generator frequency changes (for example, fea account connected to the generator circuit using keys 2 or 3 of the corresponding capacitance) which circuit 9 (or circuit 10) is configured. At the same time, the current supplying the thyristor 15 (thyristor 16) through the diode 19 (diode 20) flows through it, the relay 21 triggers (relay 22), and the engine 25 processes the command before opening corresponding microswitch 23 (microswitch 24), after which the relay 23 is de-energized (rele24) and 15 minute Ristori (thyristor 16). Even if the supply of the appropriate control command is not stopped, the battery is fed through diodes 18. In the proposed device, the device is connected, the levels of the electro-valve to the power source and the control signals are transmitted to it using a connecting node 6, which is designed as a split-core transformer with a split core. . This connecting unit, together with the keys 2 and 3, the generator 1 and the amplifier 4 is structurally incorporated into the support control equipment. The rest of the hydraulic valve control unit is located in the hydraulic valve body 11 and is connected to the cable control equipment, the length of which, without noticeable impact on the device performance, can be several meters at signal frequencies of ten kilohertz. To the conductors of the cable prip on a small-turn removable secondary winding 7 of the connecting node. Claims An hydraulic valve control device containing an electric drive, a battery, electromagnetic relays, thyristors, microswitches and diodes, which is equipped with three inductive-capacitive oscillatory circuits generator, two keys of the generator frequency control, an output amplifier and a connecting node made in the form of a transformer with a detachable core and a detachable secondary winding connected to an inductor connected in parallel capacitive oscillating circuits, the common point of which is connected to the cathodes of the thyristors and the negative leads T of the battery, the intermediate leads of the inductances of the first oscillating circuit are connected via one diode to the positive lead of the battery, and the corresponding electrodes of the corresponding thyristors, and the primary winding of the transformer of the connecting node is connected through an amplifier to the output of the generator but-. Sources of information taken into account in the examination: 1. Author's certificate of the USSR 362123, cl. E 21 D 23 / 00,196U. 2. USSR author's certificate number 426050, cl. E 21 Yu 23/16, 1971.