SU875426A1 - Remote indication device - Google Patents

Description

(54) DEVICE FOR TELESIGNALIZATION

Claims (2)

The invention relates to telemechanics and may find application in various parameter state alarm systems at process facilities. devices for remote signaling are known that contain control keys connected to the wires of the electrical network and through the wire of the communication line with the signal relays, which are connected to signal lamps. The closest to the technical essence of the proposed is the remote signaling yctpoftCTBo containing receiving signals, the first terminals of the windings of which are connected to a three-phase AC network; the second windings in the water of the relay receive signals through the corresponding diodes connected to the wire uu communication relay contacts connected to signal Priya vyvo give O & 4OTOK signalsh x relay whose contacts are connected to respective signal lamps, for cont liruemom point contact sensors, diodes 2. A disadvantage of the known device is insufficient information content. The purpose of the invention is to increase the information content of the device. The goal is achieved by the fact that the device for remote signaling, which contains at the control room, relays of signals, the first terminals of which are connected to a three-phase AC network, the second terminals of the relays of signals receiving, through corresponding diodes, are connected to the communication line, the relay contacts receiving signals are connected to the outputs of the windings of the signal relays, the contacts of which are connected to the corresponding signal lamps at the monitored point, the contacts of the sensors, the diodes, in the device to the controller At this point, intermediate relays, signal relays and knes are inserted; stop; sensor contacts are connected through successively connected first contacts of intermediate and signal relays connected to the windings of intermediate relays and through the second contacts of intermediate relays to the windings of the signal relays, the first terminals of the third intermediate contacts the relays are connected via diodes to the wires of a three-phase AC network, the second terminals are the third contacts of the intermediate relays of the connection and are connected to the wire of the communication line. A schematic of the device is shown in FIG. 1-4. The device contains contacts of sensors 1-4, intermediate relays 5-8, contacts of intermediate relays., 6j-6, -, 1, -lf and 8.-8l, signal ret at 3 l e lf 9-12, contacts of signal relays 9 , 92., 10,102., П, 112,12, 12, button 13 Stop, diodes 14-1C, display unit J9, signal lamps 20-23, signal receiving relay 24-26, diodes 27-29, signal relays 30- 33, button Stop relays receiving signals 24, 2Ад, 26у-26у and contacts signal salshekh relay, 32,32з, button 34, display unit 35, lamps 36-39, line 40, network 41, controlled point 42 control tower 43. The remote signaling device operates as follows. When the signalfo contact of sensor 1 is closed along circuit 6, 7, 8, 9, relay 5 is triggered and its contact is .5 (G across: Phase A - diode 14 - whether J ff P / H ..- and communication - diodes 28 and 29 turns on relays 25 and 26, which, through their contacts 25 and 26, turn on relays 30, which become self-supporting by contact 30, and contact 30 turns on a signal lamp 36 indicating a malfunction at the controlled point. Relay 5 contacts 5, turns on a relay 9, which is set to self-grip by contact 9, by contact 9j turns on the warning light 20, and by contact 9 turns off the relay 5. Ana Logically, the device works by closing the contacts of the signal sensors 2-4, and when closing the contact 8, three relays 24-26 are turned on, which switch on relays 33 with their contacts 24, 25 and 2b4. The lights turn off using buttons 13 and 34. Connecting additional relays 9 The -12 allows the light signal to be fixed at the monitored point and after the signal sensors 1-4 return to their original position, i.e. signal lamps 20-23 signal until the operator pays attention to them and turns them off with button 13 and does not eliminate the causes of the emergency condition or until it detects the reasons why the alarm system has worked. A similar purpose has a special connection relay 30-33, button 34 and lamp 36-39. The presence of contacts 9j, 1CU, IL, 1 Of, ", 12, 4., connected respectively to the circuit of the coils of the relay 5-8 limits the time of signal transmission from the sensor, which allows for transmitting all four signals in a short period of time if sensors 1- 4 start up at the same time. The corresponding contacts L 2 2 2. From 3, 8 7, two and more are simultaneously triggered. A relay 5-8 eliminates the false transmission of information over the communication line, and four signals are transmitted via one AO wire, to contacts 24 , 25, 26.25, 24, 262., 26e, 25z, 24 ,, 24, 254 and 26, which ensure reliable reception of each signal, eliminating false alarms and eliminating the false triggering of relays 30-33. PID-P3 contacts ZO-ZZ (Fig. 3) can perform the functions of telecontrol, telecontrol, and can also be used for an audible signaling scheme or for signaling duplication in the second control room located in the second room. The presence in the proposed device of additional diodes 17 and 18 connected to the terminal 8 of the relay 8 provides for the transfer of an additional (fourth) signal over the wire 40. Thus, the proposed device provides not only tele-signaling, but also the signal fixation at the location of the monitored item and fixation control signal even after the parameter being signaled is reduced from the alarm value, but is at the alarm value limit, and the contact of the signal sensor has already opened and allows Put one more wire on one wire. The invention of the device for remote signaling, which contains at the control room a signal receiving relay, the first terminals of the windings of which are connected to a three-phase AC network, the second terminals of the windings of the signal receiving relay through. the corresponding diodes are connected by a wire of the communication line, the contacts of the signal receiving relay are connected to the winding pins of the signal relays, the contacts of which are connected to the corresponding signal lamps, at the monitored point the contacts of the sensors, the diodes are “different” because the controlled point introduced intermediate relays, signal relays and the Stop button; sensor contacts were connected via serially connected first contacts of intermediate and signal relays. to the windings of the intermediate relays and through the second contacts of the intermediate relays to the windings of the signal relays, the first terminals of the third contacts of the intermediate relays are connected via diodes to the wires of the three-phase AC network, the second terminals of the third contacts of the intermediate relays are connected and connected to the communication line wire. Sources of information taken into account in the examination 1. Rines R.L. and Gorev o.A. Telecontrol. M.-L., 1965, p. 524, 2.Raines R.L. and Gorev o.A. Telecontrol. M.7L., 1965, p. 529 (prototype). Fi.g  39.3 31.3 32.3 313 In the circuit of the telegram control in the circuit of the signal uvukokv Fig.Z 2.2 HB-Z 7 25.3 2ff.3 32 25. 26. t Jj FIG.