SU454575A1 - System of automatic control and management of technological processes - Google Patents

Description

one

The invention relates to remote control devices and can be used to monitor and control various technological processes.

The systems of automatic control are known, which contain sensors, protection units, a digital computer (DVM), a device for digital indication and printing of technological parameters and calculated DVM values, as well as decentralized analog control of the most important parameters.

However, the known system is unsuitable for control and is controlled by a multistep process, for example, ammonia production, and, moreover, it does not allow real-time centralized analog control of parameters independently of the computing complex.

The purpose of the invention is to increase the reliability and expand the functional possibilities of the system, 1y.

To do this, an alarm unit, a control panel, and a recorder indicator are entered into the system, the output of each sensor is connected to the inputs of the control panel through the corresponding alarm unit, the information outputs of which are connected to the corresponding inputs of the computing device, the outputs of each alarm unit are connected to the mimic circuit, and relevant

control panel outputs - with indicator and recorder.

The drawing shows a block diagram of the proposed system.

The system of automatic control and control contains sensors 1 (total) with output signals of direct current, blocks 2 (n blocks) of alarm signaling for the output: 11etrov beyond the limits of power supplies, remote control 3 with kalbrovirovymi resistors and key switches, computing device 4, regulator tori 5, protection relay 6 (total n relays), positioners 7 (total n), power supply bodies 8, mnemonic scheme 9,

indicator 10, recorder 11, digital indicator 12, print device 13. All alarm units 2, remote control 3 with indicator 10 and recorder 11 constitute a subsystem of centralized analog control of parameters operating independently of the computing device.

The system of automatic control works as follows.

The DC signals from the sensors pass through the input circuits of all the signaling units 2, the control panel 3 with calibrated resistors and key switches, the computing device 4, all the p controllers 5 and the relay

protection 6 (all n relays).

Each alarm unit 2 has two settings, limiting the zone of normal values of the technological parameter.

When leaving the zone of normal values, all the alarm 2 blocks give a signal. By this signal, the operator using the control keys 3 can cause a deviated parameter to the analog indicator 10 or the recorder AND, the number of which is selected from the conditions of the need to simultaneously monitor the maximum number of parameters. The computing device 4, the main task of which is to optimize the process, converts the analog signal of the sensors into a Digital form and provides instant values of the parameters to the digital indicator 12 on a call and to the printing device 13 technological parameters and calculated values.

The control actions developed by the computing device 4 according to the control algorithms change the settings of the automatic controllers 5, which, through the positioners 7, act on the corresponding executive bodies 8 to convert the production mode of operation to the optimal one.

Protection relays 6 have emergency settings. When the parameter goes beyond these settings, the protection relay 6 issues signals to the shut-off valves of the actuators 8.

Subject invention

The system of automatic control and management of technological processes, containing sensors, a mnemonic scheme, a computing device, the outputs of which are connected respectively to a digital indicator and a printing device, and the executive outputs of the computing device are connected to

the corresponding inputs of the regulators, the first output of each of which is connected to the input of the corresponding positioner, the outputs of the latter are connected to one of the inputs of the executive body, the other input of which

connected to the first output of each of the protection relays, the information outputs of the computing device are connected to the input of the protection relay through the corresponding controllers, the outputs of each of which are connected

to the sensor of the same name, characterized in that, in order to increase the reliability and expand the functionality of the system, an alarm unit, a control panel, an indicator and a recorder are inserted into it, with the output of each sensor being connected to the inputs of the control panel through the corresponding alarm unit which are connected to the corresponding inputs of the computing device, the outputs of each alarm unit are connected to the mimic circuit, and the corresponding outputs of the control panel are connected to the indicator Ator and registrar.