CN114653162A - Interactive program relay control method for oxygen production process of oxygen generation equipment - Google Patents

Abstract

The invention discloses an interactive program relay control method of an oxygen production process of oxygen production equipment in the technical field of automatic control; comprises the following steps of; s100, splitting a controllable program of the process step into three parts; s200, converting the control steps through a conversion command and storing the converted control steps into a power-off holding register; s300, establishing a manual interaction interface and inputting a control command; s400, establishing signal connection between the step implementation layer and the interface layer. The method has the advantages that the complex PLC or controller programming is converted into the graphic programming to be displayed on a human-computer interaction interface, technical, debugging and maintenance personnel can quickly master the process steps for adjusting the work of the oxygen generator, the debugging and testing efficiency of the oxygen generation equipment can be well improved, the process step program modification cost of the later-stage oxygen generation equipment can be reduced, and meanwhile, the threshold of the technical, debugging and maintenance personnel for adjusting the equipment program is reduced.

Description

Interactive Program Relay Control Method for Oxygen Production Process of Oxygen Production Equipment

technical field

The invention relates to the technical field of automatic control, in particular to an interactive program relay control method for an oxygen production process of an oxygen producing device.

Background technique

There are many situations that may be encountered in the actual operation of pressure swing adsorption oxygen production equipment: 1. The change in altitude causes the original preset air intake, exhaust, and balance operation time to fail to achieve the original oxygen production effect; 2. The efficiency of molecular sieve The decrease causes the original preset intake, exhaust, and balance operation time to fail to achieve the original oxygen production effect; 3. The decline in the efficiency of the air compressor causes the original preset intake, exhaust, and balance operation time to fail. To achieve the original oxygen production effect.

In order to correct the oxygen-producing effect of pressure swing adsorption as an oxygen-generating equipment, it is necessary to adjust the intake, exhaust and balance operation time according to the original preset. According to the existing technology, it is necessary to modify the program of the PLC or the controller, which requires professional PLC programmers to operate, enter the bottom layer of the control program, find the corresponding instructions, and adjust the running time one by one after digital conversion.

This method cannot satisfy the timely adjustment of the equipment by the operation managers and maintenance personnel, thus affecting the timely correction of the oxygen production effect. Especially in the oxygen production equipment for emergency rescue, the existing technology leads to the solidification of the process steps, which also makes it impossible for the oxygen production system to quickly adjust the process steps to adapt to the environment when changing the environment, such as from the plain to the plateau.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an interactive program relay control method for the oxygen production process of the oxygen production equipment, so as to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: an interactive program relay control method for an oxygen production process of an oxygen generator, the oxygen generator comprising: a first adsorption tower, a second adsorption tower, a dust filter, an oxygen buffer device, PLC controller and computer, the tops of the first adsorption tower and the second adsorption tower are connected with a one-way valve through a sealed pipeline, and the two one-way valves are far away from the first adsorption tower and the second adsorption tower respectively. One end of the filter is connected to the dust filter through a sealed pipe, the sealed pipe at the top of the first adsorption tower is connected with a balanced pneumatic valve, and the end of the balanced pneumatic valve away from the first adsorption tower is connected to the second adsorption tower through a sealed pipe, The end of the dust filter away from the one-way valve is connected to the oxygen buffer device through a sealed pipeline, the end of the oxygen buffer device away from the dust filter is connected with an electric valve through the sealed pipeline, and the first adsorption tower is away from the one-way valve. One end is connected with a first air intake pneumatic valve through a sealed pipe, and the end of the first air intake pneumatic valve away from the first adsorption tower is connected with a pressure regulating valve and a second air intake pneumatic valve through a sealed pipe. One end of the intake pneumatic valve close to the first adsorption tower is connected with a first nitrogen discharge pneumatic valve through a sealed pipeline, and the end of the second adsorption tower away from the one-way valve is connected with the second intake pneumatic valve through a sealed pipeline. One end of the second air inlet pneumatic valve close to the second adsorption tower is connected with a muffler through a sealing pipe, and the end of the first nitrogen exhaust pneumatic valve away from the first air inlet pneumatic valve is connected with the muffler through a sealing pipe, and the PLC controller is respectively connected with the muffler. The balance pneumatic valve, the second row nitrogen pneumatic valve, the first row nitrogen pneumatic valve, the first intake pneumatic valve and the control end of the second intake pneumatic valve are connected with signals, the PLC controller is provided with a signal connector, the A signal connection is made between the PLC controller and the signal connector, a repeater is arranged on the signal line between the PLC controller and the signal connector, and the signal connector is signally connected to the signal output end of the computer; the interactive Program relay control methods include:

S100, the process step controllable program is divided into three parts;

S200, the control steps are converted and stored in the power-off hold-type register through the conversion command;

S300, establishing a manual interactive interface, and inputting a control command;

S400, establishing a signal connection between the step implementation layer and the interface layer.

As a further solution of the present invention: the PLC controller is provided with a power-off hold type register, the signal input terminals of the PLC controller and the power-off hold type register are set with BIN commands, and the PLC controller and the power-off hold type register are provided with BIN instructions. Set the BCD command at the signal output end of the register, and store the number of steps, step action, step execution time and control graphic symbols input from the human-computer interaction interface through the power-off holding register, and complete the binary and decimal conversion through the BIN and BCD commands. .

As a further scheme of the present invention: in the step S100, by modifying the PLC control program, the original fixed output process step control program is divided into three parts, which are the number of steps, the action of the step, and the execution time of the step, where the number of steps is the number of steps. As the logic execution sequence, the step action is used as the logic execution command, and the step execution time is used as the step execution time limit. After the process steps are divided, the number of steps, the step action and the step execution time can be performed on any control valve through the PLC controller. The distribution of the oxygen generator can be directly controlled, and then the output of any valve on the oxygen production equipment can be controlled according to the actual situation.

As a further solution of the present invention: in the step S200, through the repeater and the BIN and BCD instructions, each step of the action step will be converted into a binary number and stored in the power-off hold type register of the PLC, and the step execution time Then it is stored in the power-off holding register of the PLC as an unsigned integer, and the complex programming program is converted into graphic programming through the BIN and BCD instructions, and presented through the human-computer interaction interface.

As a further scheme of the present invention: in the step S300, a visual human-computer interaction interface is established through the signal connection between the PLC controller and the computer, wherein the graphic symbols of the human-computer interaction interface are converted into binary through the BIN instruction, and Write into the power-off hold-type register through the communication protocol, establish a human-computer interaction interface and display the converted graphic programming, so that the staff can quickly master the process steps of adjusting the work of the oxygen generator, which can improve the oxygen production. Equipment debugging and testing efficiency.

As a further solution of the present invention: in the step S400, the PLC controller is used to balance the pneumatic valve, the second nitrogen discharge dynamic valve, the first nitrogen discharge dynamic valve, the first intake pneumatic valve and the second intake pneumatic valve. The control terminal signal connection is established to establish the direct connection between the execution layer and the human-computer interaction interface. At the same time, through the communication completion bit, the active data exploration mechanism of the PLC underlying program to the human-computer interaction interface is established. Data exploration mechanism, reducing the time to modify the program.

Compared with the prior art, the beneficial effects of the present invention are: in the present invention, oxygen is produced through the first adsorption tower, the second adsorption tower, a dust removal filter, an oxygen buffer device, etc. Establish a direct connection, and split the process steps, and through the human-machine interface and conversion instructions, you can quickly change the valve output control of any step in the process steps of the oxygen production equipment through graphic input. Step execution time is split and controlled, and complex PLC or controller programming is converted into graphic programming and presented on the human-computer interface by converting instructions, so that technicians, debugging and maintenance personnel can quickly master the adjustment of the oxygen concentrator. The process steps can greatly improve the debugging and testing efficiency of the oxygen production equipment, and can reduce the cost of modifying the process steps of the oxygen production equipment in the later stage, and at the same time reduce the threshold for technical, debugging and maintenance personnel to adjust the equipment program. The oxygen generation system is more adaptable to the scene, more environmentally friendly, more functional, and more convenient to modify the process flow.

Description of drawings

Fig. 1 is the flow chart structure schematic diagram of the present invention;

FIG. 2 is a schematic structural diagram of an oxygen production device in the present invention.

In the figure: 1, the first adsorption tower; 2, the second adsorption tower; 3, the dust filter; 4, the oxygen buffer device; 5, the check valve; 6, the electric valve; 7, the muffler; Pneumatic valve; 9. Pressure regulating valve; 10. PLC controller; 11. Signal connector; 12. Computer; 16. Balance pneumatic valve.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIGS. 1-2, in the embodiment of the present invention, the interactive program relay control method of the oxygen production process of the oxygen production equipment, the oxygen production equipment includes: a first adsorption tower 1, a second adsorption tower 2, a dust filter 3, The oxygen buffer device 4, the PLC controller 10 and the computer 12, the tops of the first adsorption tower 1 and the second adsorption tower 2 are connected with a one-way valve 5 through a sealed pipeline, and the two one-way valves 5 are respectively far away from the first adsorption tower. One end of the first adsorption tower 1 and the second adsorption tower 2 are connected to the dust filter 3 through a sealed pipe, and the sealed pipe at the top of the first adsorption tower 1 is connected with a balanced pneumatic valve 16, and one end of the balanced pneumatic valve 16 away from the first adsorption tower 1 is sealed. The pipeline is connected with the second adsorption tower 2, the end of the dust filter 3 away from the one-way valve 5 is connected with the oxygen buffer device 4 through a sealed pipeline, and the end of the oxygen buffer device 4 away from the dust filter 3 is connected with an electric valve 6 through the sealed pipeline, One end of the first adsorption tower 1 away from the one-way valve 5 is connected with a first air intake pneumatic valve 8 through a sealed pipeline, and one end of the first intake pneumatic valve 8 away from the first adsorption tower 1 is connected with a pressure regulating valve 9 through a sealed pipeline. Connected with the second air inlet pneumatic valve 14, the end of the first air inlet pneumatic valve 8 close to the first adsorption tower 1 is connected with a first nitrogen discharge pneumatic valve 13 through a sealed pipeline, and the second adsorption tower 2 is far away from the one-way valve 5. The second intake pneumatic valve 14 is connected to the second intake pneumatic valve 14 through a sealing pipeline. The end of the second intake pneumatic valve 14 close to the second adsorption tower 2 is connected with a muffler 7 through the sealing pipeline. The first nitrogen exhaust pneumatic valve 13 is far away from the first intake pneumatic valve. One end of 8 is connected to the muffler 7 through a sealed pipe, and the PLC controller 10 is respectively connected to the balance pneumatic valve 16, the second nitrogen gas dynamic valve 15, the first nitrogen gas dynamic valve 13, the first air intake pneumatic valve 8 and the second air intake. The control terminal of the pneumatic valve 14 is connected to the signal, the PLC controller 10 is provided with a signal connector 11, the PLC controller 10 is connected with the signal connector 11, and the signal line between the PLC controller 10 and the signal connector 11 is set The repeater, the signal connector 11 is signally connected with the signal output end of the computer 12; the interactive program relay control method includes:

S100, the process step controllable program is divided into three parts;

S200, the control steps are converted and stored in the power-off hold-type register through the conversion command;

S300, establishing a manual interactive interface, and inputting a control command;

S400, establishing a signal connection between the step implementation layer and the interface layer.

The PLC controller 10 is provided with a power-off hold type register, the PLC controller 10 and the signal input terminal of the power-off hold type register are set with a BIN command, and the PLC controller 10 and the signal output terminal of the power-off hold type register are set with a BCD command , store the number of steps, step action, step execution time and the control graphic symbols input from the human-computer interaction interface through the power-off holding register, and complete the binary and decimal conversion through BIN and BCD instructions.

In step S100, by modifying the PLC control program, the original fixed output process step control program is divided into three parts, which are the number of steps, the action of the step, and the execution time of the step, wherein the number of steps is used as the logic execution sequence, and the step action is used as the logic execution. command, the step execution time is used as the step execution time limit. After the process steps are divided, the PLC controller 10 can directly control the distribution of the number of steps, step actions and step execution time for any control valve, and then according to the actual situation The situation controls the output of any valve on the oxygen generator.

In step S200, through the repeater and the BIN and BCD instructions, each action step will be converted into a binary number and stored in the PLC's power-off holding register, and the step execution time is stored as an unsigned integer in the PLC's interrupt. In the electrical holding register, complex programming programs are converted into graphic programming through BIN and BCD instructions, and presented through a human-computer interface.

In step S300, through the signal connection between the PLC controller 10 and the computer 12, a visual human-computer interaction interface is established, wherein the graphic symbols of the human-computer interaction interface are converted into binary numbers through the BIN instruction, and are written into the power-off hold through the communication protocol. In the type register, by establishing a human-computer interaction interface and displaying the converted graphic programming, the staff can quickly master the process steps of adjusting the work of the oxygen generator, which can greatly improve the debugging and testing efficiency of the oxygen generator.

In step S400, the control terminal signals of the balance pneumatic valve 16, the second nitrogen exhaust pneumatic valve 15, the first nitrogen exhaust pneumatic valve 13, the first intake pneumatic valve 8 and the second intake pneumatic valve 14 are passed through the PLC controller 10. Connect, establish the direct connection between the execution layer and the human-computer interaction interface, and at the same time, establish the active data detection mechanism of the PLC bottom program on the human-computer interaction interface through the communication completion bit, and establish an active data detection mechanism between the executive program and the human-computer interaction interface. Reduce the time to modify the program.

The working principle of the present invention is as follows: in the present invention, the first adsorption tower 1, the second adsorption tower 2, the dust filter 3, the oxygen buffer device 4 and other components are used together to perform oxygen production. The external environment cannot work completely. When the control command needs to be replaced, input the graphic programming program through the human-computer interaction interface, and then convert the input control program into binary numbers through the BIN conversion command, and then store it in the PLC power-off holding register, and then pass the BIN conversion command. The PLC controller 10 is connected to the signals between the control terminals of the balance pneumatic valve 16 , the second nitrogen exhaust pneumatic valve 15 , the first nitrogen exhaust pneumatic valve 13 , the first intake pneumatic valve 8 and the second intake pneumatic valve 14 . The number of steps, step actions and step execution time of the above control valve are individually controlled, and any valve can be controlled independently for any action step execution number, step execution action and execution time. To achieve the purpose of controlling the oxygen production equipment to carry out the complete oxygen production process.

When it needs to be explained, the oxygen-generating equipment and oxygen-generating principle designed in this submission are well known in the industry, and no special explanation is made here.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (6)

1. The interactive program relay control method of the oxygen production process of an oxygen generator, wherein the oxygen generator comprises: a first adsorption tower (1), a second adsorption tower (2), a dust filter (3) , oxygen buffer device (4), PLC controller (10) and computer (12), the tops of the first adsorption tower (1) and the second adsorption tower (2) are connected with a one-way valve (5) through a sealed pipeline ), the ends of the two one-way valves (5) that are respectively away from the first adsorption tower (1) and the second adsorption tower (2) are connected to the dust filter (3) through a sealed pipeline, and the first adsorption The sealed pipe at the top of the tower (1) is connected with a balanced pneumatic valve (16), and the end of the balanced pneumatic valve (16) away from the first adsorption tower (1) is connected with the second adsorption tower (2) through a sealed pipe, and the One end of the dust filter (3) away from the one-way valve (5) is connected with the oxygen buffer device (4) through a sealed pipe, and the end of the oxygen buffer device (4) away from the dust filter (3) is connected with an electric motor through a sealed pipe. Valve (6), one end of the first adsorption tower (1) away from the one-way valve (5) is connected with a first air intake pneumatic valve (8) through a sealed pipeline, and the first air intake pneumatic valve (8) is far away from One end of the first adsorption tower (1) is respectively connected with a pressure regulating valve (9) and a second air inlet pneumatic valve (14) through a sealed pipeline, and the first air inlet pneumatic valve (8) is close to the first adsorption tower ( One end of 1) is connected with a first discharge nitrogen pneumatic valve (13) through a sealed pipeline, and the end of the second adsorption tower (2) away from the one-way valve (5) is connected with the second intake pneumatic valve (14) through a sealed pipeline connection, the end of the second air intake pneumatic valve (14) close to the second adsorption tower (2) is connected with a muffler (7) through a sealed pipe, and the first nitrogen discharge pneumatic valve (13) is far away from the first air intake pneumatic valve (13). One end of the valve (8) is connected to the muffler (7) through a sealed pipeline, and the PLC controller (10) is respectively connected to the balance pneumatic valve (16), the second nitrogen pneumatic valve (15) and the first nitrogen pneumatic valve ( 13) The first air inlet pneumatic valve (8) and the control end signal connection of the second air inlet pneumatic valve (14), the PLC controller (10) is provided with a signal connector (11), the PLC controller (10) Signal connection with the signal connector (11), a repeater is arranged on the signal line between the PLC controller (10) and the signal connector (11), and the signal connector (11) is connected to the signal connector (11). The signal output terminal signal connection of the computer (12); the interactive program relay control method comprises: S100, the process step controllable program is divided into three parts; S200, the control steps are converted and stored in the power-off hold-type register through the conversion command; S300, establishing a manual interactive interface, and inputting a control command; S400, establishing a signal connection between the step implementation layer and the interface layer. 2. The interactive program relay control method of oxygen production equipment oxygen production process according to claim 1, it is characterized in that: described PLC controller (10) is provided with power-off hold type register, described PLC controller (10) A BIN instruction is set with the signal input terminal of the power-off hold type register, and the PLC controller (10) is set with a BCD instruction with the signal output terminal of the power-off hold type register. 3. the interactive program relay control method of oxygen production equipment oxygen production process according to claim 1, is characterized in that: in step S100, by revising PLC control program, the original fixed output process step control program is split into The three parts are the number of steps, the action of the step, and the execution time of the step. The number of steps is used as the logic execution sequence, the step action is used as the logic execution command, and the step execution time is used as the step execution time limit. 4. the interactive program relay control method of oxygen production equipment oxygen production process according to claim 1, it is characterized in that: in step S200, by repeater and BIN and BCD instruction, every step of action step will be converted After it is a binary number, it is stored in the power-off holding register of the PLC, and the step execution time is stored in the power-off holding register of the PLC as an unsigned integer. 5. The interactive program relay control method of oxygen production equipment oxygen production process according to claim 1, is characterized in that: in step S300, by the signal connection between PLC controller (10) and computer (12), A visual human-computer interaction interface is established, wherein the graphic symbols of the human-computer interaction interface are converted into binary through the BIN command, and written into the power-off retention register through the communication protocol. 6. The interactive program relay control method of the oxygen production process of an oxygen generator according to claim 1, characterized in that: in step S400, through the PLC controller (10) and the balance pneumatic valve (16), the second row Signal connections of the control terminals of the nitrogen pneumatic valve (15), the first exhaust nitrogen pneumatic valve (13), the first intake pneumatic valve (8) and the second intake pneumatic valve (14) to establish the execution layer and the man-machine interface At the same time, the active data detection mechanism of the PLC bottom program to the human-computer interaction interface is established through the communication completion bit.

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