CN205016094U - Gas transmission process control simulation training platform - Google Patents

Abstract

A gas transmission process control simulation training platform, including a process panel and a plc controller, the process panel is provided with light-emitting diodes and potentiometers, and the plc controller includes a central processing unit, a switch value expansion module, and an analog input expansion modules, analog output expansion modules and communication ports. The utility model has the advantages of simple structure, small size and low cost. In actual teaching, it only needs to be equipped with a computer to work, and more than 30 computers can be placed in an ordinary classroom, which greatly improves the teaching efficiency. The panel can be replaced continuously with the teaching process, so that students can become familiar with various working conditions from simple to complex.

Description

Gas transmission process control simulation training platform

technical field

The utility model relates to electrical automation teaching equipment, in particular to a simulation training platform for gas transmission process control.

Background technique

Natural gas is the main energy source in our country. Gas transmission and distribution is one of the important subjects in gas engineering. In the teaching of gas transmission and distribution, pure book knowledge cannot meet the teaching purpose. Students must master the skills they have learned through practical training. Due to the particularity of gas transmission and distribution stations, students cannot be trained on-site. The school’s own training center requires a large investment and occupies a large area. However, students often need long-term, repeated, and multiple trainings to fully grasp the relevant technical experience. , the site is obviously in short supply, and the maintenance cost of the training center in high-load operation is also high.

Nowadays, many schools adopt a combination of simulation training and practical training, and introduce electrified simulation training platforms, which can not only reduce costs, but also improve teaching efficiency. But now there is no teaching platform for the field of gas distribution. Schools can only purchase teaching platforms that are similar in principle to simulate gas delivery training, which invisibly increases the difficulty of teaching. Students are often difficult to understand in the classroom due to unsuitable teaching equipment. The content of the training prevents students from effectively mastering the skills they have learned.

Contents of the invention

Aiming at the deficiencies of the prior art, the utility model provides a gas delivery process control simulation training platform specially for the teaching of gas delivery.

The technical solution adopted by the utility model is: a gas delivery process control simulation training platform, including a process panel and a plc controller, the process panel is provided with a light-emitting diode and a potentiometer, and the plc controller includes a central processing unit, Digital expansion module, analog input expansion module, analog output expansion module and communication port.

The gas transmission process control simulation training platform is characterized in that: each set of switching value input and output terminals in the PLC is correspondingly provided with a manual switch.

The gas transmission process control simulation training platform is characterized in that: the two poles of the light-emitting diode, the two ends of the potentiometer, each pin of the PLC controller and the two ends of the manual switch are connected to a corresponding jack.

The gas delivery process control simulation training platform is characterized in that: it also includes a touch screen, and the touch screen is connected through a communication port in the plc controller.

The gas transmission process control simulation training platform is characterized in that: the panel is a detachable structure.

The gas transmission process control simulation training platform is characterized in that: the plc controller uses V4.0 STEP7 and MicroWINSP6 systems, the touch screen uses Easybuilder8000 system, and the communication port is RS485 communication port.

In the utility model, the light-emitting diode simulates the opening and closing of the valve and the working state of the functional parts, and the voltmeter or ammeter simulates the degree of the voltage and current of the potentiometer to simulate the liquid level, temperature, pressure, and valve opening of the gas transmission and distribution station. The manual switch simulates the on-site manual valve switch, and the touch screen simulates the monitoring and control in the on-site control room, so that students have a more specific and thorough understanding of professional knowledge. The utility model has the advantages of simple structure, small size and low cost. In actual teaching, it only needs to be equipped with a computer to work, and more than 30 computers can be placed in an ordinary classroom, which greatly improves the teaching efficiency. The panel can be replaced continuously with the teaching process, so that students can become familiar with various working conditions from simple to complex.

Description of drawings

Fig. 1 is a structural diagram of the utility model;

Fig. 2 is the working principle diagram of the light-emitting diode and the digital module of the utility model;

Fig. 3 is the working principle diagram of the utility model potentiometer and analog quantity input expansion module;

Fig. 4 is the working principle diagram of the analog quantity output expansion module of the utility model;

Fig. 5 is a corresponding diagram of panel identification symbols and electronic components in the utility model.

In the figure: 1-frame, 2-panel, 3-plc controller, 4-light-emitting diode, 5-potentiometer, 6-voltmeter, 7-ammeter, 8-touch screen, 9-jack, 10-screw, 11 -Manual switch.

detailed description

As shown in Figure 1, the simulation training platform for the control of the gas delivery process of the utility model includes a frame 1, a panel 2, a plc controller 3, a light emitting diode 4, a potentiometer 5, a voltmeter 6, an ammeter 7, a touch screen 8, and a socket 9 . The panel 2 is fixed on the upper left of the frame by screws 10, on which is drawn a simulated schematic diagram of the transmission and distribution pipeline of the gas station, where two light-emitting diodes 4 of different colors are set at each valve mark to display the valve opening and closing status, Each liquid level transmitter, temperature transmitter, pressure transmitter and valve position transmitter are marked with a potentiometer 5, and the two poles of each light-emitting diode are respectively connected to a jack, and the two ends of each potentiometer are respectively connected to One jack, the corresponding jacks of each light-emitting diode and potentiometer are all set in the area of the lower right corner of the panel 2, which is convenient for operation.

Below the panel 2 is a plc controller 3, the plc controller includes Siemens s7-200 series CPU226CNAC/DC/RLY, EM22316DI/16RLY, EM2314AI, EM2322AD, wherein each pin is provided with a corresponding jack. Each digital port of the plc controller 3 is correspondingly provided with a manual switch 11, and corresponding jacks are provided at both ends of the manual switch 11.

A touch screen 8 is set on the right side of the panel 2, and the touch screen 8 is a TK6070IP touch screen.

Two voltmeters 6 and two ammeters 7 are set on the right side of the plc controller 3, corresponding jacks 9 are set at both ends of the voltmeter 6 and the ammeter 7, the voltmeter 6 is equipped with a voltage source, the ammeter 7 is equipped with a current source, the ammeter, voltage The two ends of the meter, the two ends of the current source and the voltage source are provided with corresponding jacks.

As shown in Figure 2, the high-voltage end of the 24V power supply is connected to the 1L port and the 1M port of the plc central processing unit, and the low-voltage end is provided with a corresponding jack, and a resistor R is connected in series with each diode circuit, so that the voltage at both ends of the light-emitting diode meets its rated voltage , when the two ends of the light-emitting diode 4 are respectively connected to the low-voltage end of the power supply and the Q0.0 port of the plc controller through their corresponding jacks, and at the same time, the two ends of the manual switch 11 are respectively connected to the low-voltage end of the power supply and the I0.0 port of the plc controller through their corresponding jacks At this time, as long as the manual switch is closed, the Q0.0 port can be excited through the I0.0 port, so that the light-emitting diode 4 can emit light.

As shown in Figure 3, when the ammeter 7 is used as an indicating instrument, the ammeter 7, the current source and the potentiometer 5 are connected in series through the jack 9, and one end of them is connected to the RA and A+ ports, and the other end is connected to the A- port. The reading of the ammeter 7 is changed by adjusting the resistance of the potentiometer 5 . When the voltmeter 6 is used as the indicating instrument, the voltage source and the potentiometer 5 are connected in series through the jack 9, and the two ends are respectively connected to the C+ terminal and the C- terminal of the analog input port of the PLC controller, and the two ends of the voltmeter 6 are connected to the PLC control The C+ terminal and C- terminal of the analog quantity input port of the device. At this time, the reading of the voltmeter 6 can be changed by adjusting the resistance of the potentiometer 5.

As shown in Figure 4, when using the voltmeter 6 as the indicating instrument, connect its two ends to the M0 port and the V0 port respectively; when using the ammeter 7 as the indicating instrument, connect its two ends to the M1 port and the I1 port respectively.

Figure 5 lists the corresponding relationship between identification symbols and electronic components in the panel. Each valve opening and closing control corresponds to two light-emitting diodes, which respectively indicate its opening and closing; each heating furnace, each electric heat tracing, and each through-ball indicator correspond to one light-emitting diode, and the light-emitting diodes are on to indicate that they are working and emitting light. Diode off means stop working; each pressure sensor corresponds to a potentiometer, and the pressure change is simulated by adjusting the resistance of the potentiometer; each temperature sensor corresponds to a potentiometer, and the temperature change is simulated by adjusting the resistance of the potentiometer; each liquid level sensor corresponds to A potentiometer, which simulates liquid level changes by adjusting the resistance of the potentiometer; each valve position transmitter corresponds to a potentiometer, which simulates valve position changes by adjusting the resistance of the potentiometer.

The connection modes in Fig. 2 to Fig. 4 of the present invention are common connection modes with the same function in the same type of ports, rather than the only connection mode.

Plc controller 3 is embedded in MicroWINSP6 system, and uses V4.0STEP7 programming, and touch screen 8 is embedded in Easybuilder8000 software.

Before the utility model is used, the edited relevant programs are input into the PLC controller in advance, and are displayed and controlled by the touch screen 8 . In the learning practice, through the understanding of the knowledge learned, the students correctly connect the various electrical components with the PLC controller, and edit the program on the computer corresponding to the schematic diagram drawn on the panel. The table simulates on-site control, and can also simulate remote monitoring and remote control through computer, so as to achieve the purpose of simulation practice.

Claims (7)

1. A gas delivery process control simulation training platform, comprising a process panel and a plc controller, characterized in that: light-emitting diodes and potentiometers are set on the process panel, and the plc controller includes a central processing unit, a switch expansion module, analog input expansion module, analog output expansion module and communication port. 2. The simulation training platform for gas transmission process control according to claim 1, characterized in that: each set of switching value input and output terminals in the plc is correspondingly provided with a manual switch. 3. The gas delivery process control simulation training platform according to claim 1, characterized in that it further comprises a voltmeter and an ammeter, the voltmeter is equipped with a voltage source, and the ammeter is equipped with a current source. 4. The gas delivery process control simulation training platform according to any one of claims 1 to 3, characterized in that: the two poles of the light emitting diode, the two ends of the potentiometer, the two ends of the voltmeter, the two ends of the ammeter, The two poles of the voltage source, the two poles of the current source, each pin of the plc controller and the two ends of the manual switch are connected to a corresponding jack. 5. The gas delivery process control simulation training platform according to any one of claims 1 to 3, characterized in that: it also includes a touch screen, and the touch screen is connected through a communication port in the PLC controller. 6. The gas delivery process control simulation training platform according to any one of claims 1 to 3, wherein the panel is a detachable structure. 7. The gas delivery process control simulation training platform according to claim 5, characterized in that: said plc controller uses MicroWINSP6 system and V4.0 STEP7 programming, said touch screen uses Easybuilder8000 system, and said communication port is RS485 communication port.