RU219282U1 - SIMULATOR OF UNIFIED SIGNALS OF AUTOMATIC CONTROL SYSTEMS OF GAS PUMPING UNITS - Google Patents

Abstract

The utility model relates to devices used in the field of automated process control systems (APCS), in particular for diagnosing monitoring and control circuits, checking algorithms, as well as checking protections in automatic control systems of gas compressor units or a compressor shop (ACS GPA, ACS KC). When carrying out the above works, the sensors (temperature, pressure, etc.) are sequentially disconnected from the input ports of the ACS and, in their place, a unified signal calibrator is connected, which reproduces electrical signals of force, DC voltage, resistance, as well as signals of resistance thermal converters. The objective of the utility model is to increase the efficiency of diagnosing control and management circuits, checking algorithms, and also checking protections in automatic control systems. EFFECT: imitation of operation of differential pressure, flow, level, temperature sensors when diagnosing monitoring and control circuits, checking algorithms, as well as checking protections in automatic control systems (Kvant-6M, Kvant-R, MSKU-5000, etc.). The problem is solved, and the technical result is achieved by developing a simulator device that does not require power supply, which makes it possible to promptly issue analog ratings in the ACS with the possibility of smooth adjustment, as well as simulate signals simultaneously on two channels of the ACS without using a second calibrator. 3 ill.

Description

The utility model relates to devices used in the field of automated process control systems (APCS), in particular for diagnosing monitoring and control circuits, checking algorithms, as well as checking protections in automatic control systems of gas compressor units or a compressor shop (ACS GPA, ACS KC).

When carrying out the above works, the sensors (temperature, pressure, etc.) are sequentially disconnected from the input ports of the ACS and, in their place, a unified signal calibrator is connected, which reproduces electrical signals of force, DC voltage, resistance, as well as signals of resistance thermal converters.

Known calibrators of unified signals that allow you to simulate various types of sensors for pressure, differential pressure, flow, level, temperature, etc. [Manual. FLUKE 744 Calibrator (date of issue: 1998)]. The disadvantages of these calibrators are stepwise adjustment of signal levels, the presence of power supply, as well as high cost and imported production.

The objective of the utility model is to increase the efficiency of diagnosing control and management circuits, checking algorithms, and also checking protections in automatic control systems.

EFFECT: imitation of operation of differential pressure, flow, level, temperature sensors when diagnosing monitoring and control circuits, checking algorithms, as well as checking protections in automatic control systems (Kvant-6M, Kvant-R, MSKU-5000, etc.).

The problem is solved, and the technical result is achieved by developing a simulator device that does not require power supply, which makes it possible to promptly issue analog denominations in the automatic control system with the possibility of smooth adjustment, as well as simulate signals simultaneously on two channels of the automatic control system without using a second calibrator.

The simulator of unified signals of automatic control systems of gas compressor units consists of terminal contacts mounted in one housing for connection, contact pairs, toggle switch, milliammeter, trimming resistors, variable resistors.

The electrical circuit diagram of the simulator device when simulating current signals (4-20 mA) is shown in Fig. 1.

The simulator device is connected to the ACS through terminal contacts 1, 2. When the SA1 3 toggle switch is turned on in the “4-20 mA” position, the SA1.1 4 contact closes, and the SA1.2 5 and SA1.3 6 contacts open. The signal is measured on a milliammeter 7 and passes through the trimmer resistor R1 8 (side panel "4-20 mA"), and variable resistors R2 9, R3 10, R4 11 (front panel). To increase the current, we reduce the total resistance of the variable resistors R2 9, R3 10, R4 11 and vice versa. If it is necessary to change the range of the simulated signal when using sensors with different ranges, we adjust the tuning resistor R1 8.

The electrical circuit diagram of the simulator device when simulating thermistor signals (TCM) is shown in Fig. 2.

The simulator device is connected to the ACS through terminal contacts 1, 2. When the SA1 3 toggle switch is turned on in the “TCM” position, the SA1.1 4 contact opens, and the SA1.2 5 and SA1.3 6 contacts close. The signal passes through a variable resistor R4 11 (front panel), R5 12 and trimming resistor R6 13 (TSM side panel). To simulate a rise in temperature, we increase the resistance of the variable resistor R4 11 and vice versa. Resistor R5 12 is used to bias the resistance equal to the temperature of 0°C. If it is necessary to change the range of the simulated signal when using sensors with different ranges, we adjust the tuning resistor R6 13.

The external view of the simulator is shown in Fig. 3.

Contact pairs are made in the form of contact SA1.1 4, as well as contacts SA1.2 5 and SA1.3 6.

Claims (1)

Simulator of unified signals of automatic control systems of gas compressor units, consisting of terminal contacts mounted in one housing for connection, contact pairs, toggle switch, milliammeter, trimming resistors, variable resistors.