SU388293A1 - ALL-UNION I mmm-nm ^ -ji ^ uM - Google Patents

Description

one

This invention relates to the field of telemechanics.

Devices for signaling the position of two-position actuating mechanisms are known, comprising actuator position alarms, telecontrol and telealignment channels, control relays, command execution control units, some inputs of which are connected to telecontrol channel inputs and others.

However, using these devices to transmit signals about the position of each actuator in remote control systems requires a large number of remote signaling channels or a large number of cable cores, which is especially undesirable at a considerable distance from the control panel and mimic to actuators.

The purpose of the invention is to simplify the device.

The goal is achieved by the fact that in the proposed device, circuits are connected to the first inputs of the remote signaling channels, each of which contains the closing contacts of the first position indicator of the actuators, in parallel with which the series connected disconnecting contacts of the control relay and the contacts of the second position actuators are connected.

FIG. 1 shows a functional diagram of the device; in fig. 2 is a state diagram of the closing contacts of the actuators of the first field of the actuators; in fig. 3 is a diagram of the states of the break contacts of the second position actuator signaling devices.

The device with control inputs I, 2, 3 contains signal lamps (or board) 4, 5, 6; nodes 7, 8, 9 control the execution of commands; terminal device 10 channels of remote control and remote signaling on the command

paragraph; line // communication; terminal device 12 channels of remote control and remote signaling at the enforcement center; telecontroller output relays 13, 14, 15 with make contacts 16, 17, 18 for switching on the actuator mechanisms and opening contacts 19, 20, 21; closing contacts 22, 23, 24 of the signaling devices of the nervous position of the executive mechanisms ("open," included); the break contacts 25, 26, 27 of the second position signaling devices of the actuating mechanisms ("closed," disconnected); power bus 28; chains 29, 30, 31 to the actuators. The position of each actuator is characterized by the state of the corresponding pair of alarm contacts: 22, 26; 23, 26 or 24, 27.

In the diagrams (fittings 2 and 3), position I of the additional mechanism corresponds to a fully open or switched on position; position and actuator - fully closed or disabled state; III - intermediate position of the actuator; IV is the closed state region of the closing contacts 22, 23, 24 (in Fig. 2) and 25, 26, 27 (in Fig. 3) of the first polarizer signaling devices ("open," on) and the second position signaling devices ("closed," disabled) actuators; V is the open state region of the closing contacts 22, 23, 24 (in Fig. 2) and 25, 26, 27 (in Fig. 3) of the signaling devices of the first and second positions of the actuators.

The device works as follows.

If commands to the control inputs I, 2, 3 from the logic device or from the control keys are not received, then the relays 13, 14, 15 are disabled, the actuators are disconnected, the signals from the position alarms B are not connected to the telecontrol and telealarm channels, as contacts 22- 27 position alarms are open (Figs. 2 and 3, position II of the actuator, the state of the contacts in region V) and the signal lamps 4, 5, 6 are dragged.

If control commands are given, then relays 13, 14, 15 are turned on, contacts 16, 17, 18 are closed, and contacts I / 20, 2.1 are open. The actuators move from position II to position III (Figs. 2 and 3). The opening contacts 25, 26, 27 of the signaling devices of the second position of the executive mechanisms are transferred from the open to the closed state (Fig. 3, area IV). The closing contacts 22, 23, 24 continue to remain open (Fig. 2, area V). As a result, the control nodes for executing commands do not receive signals from the position indicators. Circuits that implement the function "inequality, in the nodes 7, 8, 9 give signals; if there is no blocking of the signals for the time required for the executive mechanisms for normal command processing, the signal lamps 4; 5, 6 blink. If a lock exists, the lamps are extinguished.

When the actuators are fully activated (opened) (Fig. 2 and 3, position I), the closing contacts 22, 23, 24 of the first position signaling devices are closed (Fig. 2, region IV), signals 7, 8, 9 are received, and Lamps 4, 5, 6 light up steadily. When you remove control commands

relays 13, 14, 15 are disconnected, contacts 16, 17, 18 are blurred, and contacts 19, 20, 21 are closed. The actuators move from position I to position III (Figs. 2 and 3). The signals to the control nodes for executing commands after switching off the relays 13, 14, 15 are received in position I (Fig. 2, 3) through contacts 22, 23, 24 and through sequentially connected contacts 19, 25; 20, 26; 21, 27. When the actuators move to position III (FIGS. 2 and 3), contacts 22, 23, 24 open, and signals to nodes 7, 8, 9 continue to flow only through contacts 19, 25; 20, 26; 21, 27.

Circuits that implement the function “imbalance” in nodes 7, 8, 9, give signals, and if there is no blocking of these signals for a time sufficient for a complete transition of actuators to the state P, lamly 4; 5, 6 blink. If the specified lock exists, then the lamps continue to burn in a steady light. When the actuators are completely disconnected (position P, Figs. 2 and 3), contacts 25, 26, 27 are opened, the signals from the position indicator are removed and the lamps 4, 5, 6 go out.

Thus, when the “turn on” (“open”) command lights up with an even light, it indicates that the lamp is turned on completely, and when the “turn on” command is removed (or when the “off” command is issued), the lamps go out to indicate that the actuators are off completely. In the intermediate positions of the actuators, the lamps either blink or continue to retain the information of the Previous State, which indicates that a complete switch has not yet occurred.

Subject invention

A device for signaling the position of two-position actuators, containing actuators position alarms, telecontrol and telealignment channels, control relays, command execution control units, some inputs of which are connected to inputs of telecontrol channels, and others that In order to simplify the device, circuits are connected to the inputs of the remote signaling channels, of which contains the closing contacts of the first position indicator of the performer GOVERNMENTAL mechanisms, which are connected in series narallelno break contacts connected control relay contacts and sensors second nolozheni actuators.

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