CN114653162B - Interactive program relay control method for oxygen production process of oxygen production equipment - Google Patents
Interactive program relay control method for oxygen production process of oxygen production equipment Download PDFInfo
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- CN114653162B CN114653162B CN202210044712.8A CN202210044712A CN114653162B CN 114653162 B CN114653162 B CN 114653162B CN 202210044712 A CN202210044712 A CN 202210044712A CN 114653162 B CN114653162 B CN 114653162B
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000001301 oxygen Substances 0.000 title claims abstract description 55
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 230000002452 interceptive effect Effects 0.000 title claims abstract description 11
- 230000003993 interaction Effects 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000001179 sorption measurement Methods 0.000 claims description 46
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 32
- 230000009471 action Effects 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4227—Manipulating filters or filter elements, e.g. handles or extracting tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0446—Means for feeding or distributing gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
- B01D53/053—Pressure swing adsorption with storage or buffer vessel
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
- C01B13/0259—Physical processing only by adsorption on solids
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
Abstract
The invention discloses an interactive program relay control method for an oxygen production process of oxygen production equipment in the technical field of automatic control; comprises the following steps of; s100, splitting a process step controllable program into three parts; s200, converting the control step through a conversion command and storing the control step into a power-off holding type register; s300, a manual interaction interface is established, and a control command is input; s400, establishing signal connection between the implementation layer and the interface layer. The complex PLC or controller programming is converted into graphic programming and presented on a man-machine interaction interface, so that the technology, debugging and maintenance personnel can master the process steps for adjusting the work of the oxygen generator quickly, the debugging and testing efficiency of the oxygen generator can be improved well, the process step program modification cost of the oxygen generator at the later stage can be reduced, and meanwhile, the threshold for adjusting the equipment program by the technology, debugging and maintenance personnel is reduced.
Description
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 oxygen production equipment.
Background
Various situations can be encountered in the actual operation of the pressure swing adsorption type oxygen generating equipment: 1, the altitude change causes that the original oxygen production effect can not be achieved according to the original preset air inlet, air exhaust and balanced running time; 2, the efficiency of the molecular sieve is reduced, so that the original oxygen production effect cannot be achieved according to the original preset air inlet, air exhaust and balance operation time; 3, the efficiency of the air compressor is reduced, so that the original oxygen production effect cannot be achieved according to the original preset air inlet, air exhaust and balanced operation time.
In order to correct the oxygen production effect of the pressure swing adsorption oxygen production equipment, the air intake, exhaust and balance operation time which are preset according to the prior art are required to be adjusted. According to the prior art, program modification is required for the PLC or the controller, which requires professional PLC programmers to operate, enter the bottom layer of the control program, find out corresponding instructions, and adjust the running time one by one after digital system conversion.
The method can not meet the requirement of timely adjustment of equipment by operation management personnel and maintenance personnel, thereby affecting timely correction of oxygen production effect. Especially for emergency rescue, the curing of the process steps in the prior art also makes it impossible to quickly adjust the process steps to the environment when the oxygen production system changes the environment, for example from plain to plateau.
Disclosure of Invention
The invention aims to provide an interactive program relay control method for an oxygen production process of oxygen production equipment, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: an interactive program relay control method of an oxygen production process of oxygen production equipment, wherein the oxygen production equipment comprises the following steps: the utility model discloses a dust removal filter, oxygen buffer device, PLC controller and computer, the top of first adsorption tower and second adsorption tower is all connected with the check valve through sealed pipeline, two the one end that first adsorption tower and second adsorption tower were kept away from respectively to the check valve is all connected with dust removal filter through sealed pipeline, the sealed pipeline on first adsorption tower top is connected with balanced pneumatic valve, the one end that balanced pneumatic valve kept away from first adsorption tower is connected with the second adsorption tower through sealed pipeline, the one end that the dust removal filter kept away from the check valve is connected with oxygen buffer device through sealed pipeline, the one end that oxygen buffer device kept away from the dust removal filter is connected with the motorised valve through sealed pipeline, the one end that the check valve was kept away from to first adsorption tower is connected with first air inlet pneumatic valve through sealed pipeline, the one end that the first air inlet pneumatic valve kept away from first adsorption tower is connected with air-vent valve and second air inlet pneumatic valve through sealed pipeline respectively, the one end that the first air inlet valve is close to first adsorption tower is connected with first exhaust nitrogen valve through sealed pipeline, the one end that the balanced pneumatic valve kept away from first adsorption tower is connected with the second air inlet valve through sealed pipeline with the second air-vent pneumatic valve, the one end that the second air inlet valve is kept away from the pneumatic valve is connected with the first air-vent, the air-vent valve is connected with the first air-vent valve through sealed pipeline with the air-vent, the PLC controller, the one end that the PLC controller is kept away from the one end of air valve is connected with the air signal generator through sealed pipeline with the air-vent valve, the one end that is connected with the air valve through the air-vent valve, a repeater is arranged on a signal line between the PLC and a signal connector, and the signal connector is in signal connection with a signal output end of a computer; the interactive program relay control method comprises the following steps:
s100, splitting a process step controllable program into three parts;
s200, converting the control step through a conversion command and storing the control step into a power-off holding type register;
s300, a manual interaction interface is established, and a control command is input;
s400, establishing signal connection between the implementation layer and the interface layer.
As a further scheme of the invention: the PLC controller is provided with a power-off holding type register, signal input ends of the PLC controller and the power-off holding type register are provided with BIN instructions, signal output ends of the PLC controller and the power-off holding type register are provided with BCD instructions, step numbers, step actions, step execution time and control graphic symbols input by a man-machine interaction interface are stored through the power-off holding type register, and meanwhile binary and decimal conversion is completed through the BIN and the BCD instructions.
As still further aspects of the invention: in step S100, the original fixed output process step control program is split into three parts, namely, the number of steps, the step action and the step execution time by modifying the PLC control program, wherein the number of steps is taken as a logic execution sequence, the step action is taken as a logic execution command, the step execution time is taken as a step execution time limit, after the process step is split, the distribution of the number of steps, the step action and the step execution time can be directly controlled on any control valve through the PLC controller, and then any valve on the oxygen generating equipment can be output and controlled according to actual conditions.
As still further aspects of the invention: in the step S200, each action step is converted into a binary number through a repeater, a BIN and a BCD instruction, and then stored in a power-off holding register of the PLC, and the step execution time is stored as an unsigned integer in the power-off holding register of the PLC, and a complex programming program is converted into a graphic programming through the BIN and the BCD instruction and presented through a human-computer interaction interface.
As still further aspects of the invention: in step S300, a visual man-machine interaction interface is established through signal connection between the PLC controller and the computer, wherein graphic symbols of the man-machine interaction interface are converted into binary by BIN instructions and written into a power-off holding register by a communication protocol, and the process steps of adjusting the operation of the oxygenerator can be quickly mastered by a worker through establishing the man-machine interaction interface and displaying the converted graphic programming, so that the debugging and testing efficiency of the oxygenerator can be well improved.
As still further aspects of the invention: in step S400, the PLC controller is connected with the control ends of the balance air valve, the second nitrogen exhaust air valve, the first air intake air valve and the second air intake air valve in a signal manner, so as to establish direct connection between the execution layer and the man-machine interaction interface, and meanwhile, the communication completion bit is used for establishing an active data probing mechanism of the PLC bottom layer program for the man-machine interaction interface, and the time for modifying the program is shortened by establishing an active data probing mechanism of the execution program and the man-machine interaction interface.
Compared with the prior art, the invention has the beneficial effects that: in the invention, oxygen is generated through the first adsorption tower, the second adsorption tower, the dust removal filter, the oxygen buffer device and the like, the direct connection is established between the PLC controller and the control valves, the process steps are split, the valve output control of any one step in the process steps of the oxygen generating equipment can be quickly changed through graphic input through a man-machine interaction interface and a conversion instruction, the split control is carried out on the number of steps, the step actions and the step execution time of the valve, the complicated PLC or controller programming is converted into graphic programming through the conversion instruction and is presented on the man-machine interaction interface, so that the technological steps for adjusting the work of the oxygen generator can be quickly mastered by technical, debugging and maintenance personnel, the debugging and testing efficiency of the oxygen generating equipment can be well improved, the process step program modification cost of the later-stage oxygen generating equipment can be reduced, and meanwhile, the threshold of the technological process program for adjusting the equipment by the technical, debugging and maintenance personnel is reduced.
Drawings
FIG. 1 is a schematic flow chart of the present invention;
fig. 2 is a schematic structural view of an oxygen generating apparatus according to the present invention.
In the figure: 1. a first adsorption tower; 2. a second adsorption tower; 3. a dust removal filter; 4. an oxygen buffer device; 5. a one-way valve; 6. an electric valve; 7. a muffler; 8. a first intake air valve; 9. a pressure regulating valve; 10. a PLC controller; 11. a signal connector; 12. a computer; 13. a first nitrogen discharge valve; 14. a second intake air valve; 15. a second nitrogen discharge valve; 16. balance pneumatic valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 2, in an embodiment of the present invention, an interactive program relay control method for an oxygen generating process of an oxygen generating device, the oxygen generating device includes: the first adsorption tower 1, the second adsorption tower 2, the dust removal filter 3, the oxygen buffer device 4, the PLC controller 10 and the computer 12, the top ends of the first adsorption tower 1 and the second adsorption tower 2 are connected with one-way valves 5 through sealing pipelines, one ends of the two one-way valves 5, which are far away from the first adsorption tower 1 and the second adsorption tower 2 respectively, are connected with the dust removal filter 3 through sealing pipelines, the sealing pipeline at the top end of the first adsorption tower 1 is connected with a balance pneumatic valve 16, one end of the balance pneumatic valve 16, which is far away from the first adsorption tower 1, is connected with the second adsorption tower 2 through sealing pipelines, one end of the dust removal filter 3, which is far away from the one-way valve 5, is connected with the oxygen buffer device 4 through sealing pipelines, one end of the oxygen buffer device 4, which is far away from the dust removal filter 3, is connected with an electric valve 6 through sealing pipelines, one end of the first adsorption tower 1, which is far away from the one-way valve 5, is connected with a first air intake pneumatic valve 8 through sealing pipelines, the end of the first air inlet pneumatic valve 8 far away from the first adsorption tower 1 is respectively connected with a pressure regulating valve 9 and a second air inlet pneumatic valve 14 through a sealing pipeline, 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 sealing pipeline, the end of the second adsorption tower 2 far away from the one-way valve 5 is connected with the second air inlet pneumatic valve 14 through a sealing pipeline, the end of the second air inlet pneumatic valve 14 close to the second adsorption tower 2 is connected with a silencer 7 through a sealing pipeline, the end of the first nitrogen discharge pneumatic valve 13 far away from the first air inlet pneumatic valve 8 is connected with the silencer 7 through a sealing pipeline, the PLC controller 10 is respectively in signal connection with control ends of the balance pneumatic valve 16, the second nitrogen discharge pneumatic valve 15, the first nitrogen discharge pneumatic valve 13, the first air inlet pneumatic valve 8 and the second air inlet pneumatic valve 14, the PLC controller 10 is provided with a signal connector 11, the PLC controller 10 is in signal connection with the signal connector 11, a repeater is arranged on a signal line between the PLC controller 10 and the signal connector 11, and the signal connector 11 is in signal connection with a signal output end of the computer 12; the interactive program relay control method comprises the following steps:
s100, splitting a process step controllable program into three parts;
s200, converting the control step through a conversion command and storing the control step into a power-off holding type register;
s300, a manual interaction interface is established, and a control command is input;
s400, establishing signal connection between the implementation layer and the interface layer.
The PLC controller 10 is provided with a power-off holding type register, signal input ends of the PLC controller 10 and the power-off holding type register are provided with BIN instructions, signal output ends of the PLC controller 10 and the power-off holding type register are provided with BCD instructions, step numbers, step actions, step execution time and control graphic symbols input by a man-machine interaction interface are stored through the power-off holding type register, and meanwhile binary and decimal conversion is completed through the BIN and the BCD instructions.
In step S100, the original fixed output process step control program is split into three parts, namely, the number of steps, the action of the steps, and the execution time of the steps, wherein the number of the steps is used as a logic execution sequence, the action of the steps is used as a logic execution command, the execution time of the steps is used as a step execution time limit, after the process steps are split, the distribution of the number of the steps, the action of the steps and the execution time of the steps can be directly controlled on any control valve through the PLC controller 10, and then any valve output control on the oxygen generating equipment can be controlled according to actual conditions.
In step S200, each step of action is converted into binary numbers through a repeater and BIN and BCD instructions, and then stored in a power-off holding register of the PLC, and the step execution time is stored as an unsigned integer in the power-off holding register of the PLC, and the complex programming program is converted into graphic programming through BIN and BCD instructions and presented through a man-machine interaction interface.
In step S300, a visual man-machine interaction interface is established through signal connection between the PLC controller 10 and the computer 12, wherein graphic symbols of the man-machine interaction interface are converted into binary numbers through BIN instructions, and written into a power-off holding register through a communication protocol, and the process steps of adjusting the operation of the oxygenerator can be quickly mastered by a worker through establishing the man-machine interaction interface and displaying the converted graphic programming, so that the debugging and testing efficiency of the oxygenerator can be well improved.
In step S400, the PLC controller 10 is in signal connection with the control ends of the balance air valve 16, the second nitrogen exhaust air valve 15, the first nitrogen exhaust air valve 13, the first air intake air valve 8 and the second air intake air valve 14, so as to establish direct connection between the execution layer and the man-machine interaction interface, and meanwhile, the communication completion bit is used to establish an active data probing mechanism of the PLC bottom layer program for the man-machine interaction interface, and the time for modifying the program is shortened by establishing an active data probing mechanism of the execution program and the man-machine interaction interface.
The working principle of the invention is as follows: in the invention, the oxygen generating operation is carried out by matching the parts such as the first adsorption tower 1, the second adsorption tower 2, the dust removal filter 3, the oxygen buffer device 4 and the like, when the oxygen generating device cannot work completely due to the influence of external environment and a control command needs to be replaced, a graphical programming program is input through a human-computer interaction interface, further, the input control program is converted into binary numbers through a BIN conversion command and then stored in a PLC power-off holding register, and further, the PLC controller 10 is connected with the control ends of the balance pneumatic valve 16, the second nitrogen discharge pneumatic valve 15, the first nitrogen discharge pneumatic valve 13, the first air inlet pneumatic valve 8 and the second air inlet pneumatic valve 14 through signals, the number of steps, the step action and the step execution time of the control valves are controlled independently, the number of steps of action steps and the execution time of any one valve are controlled independently, and a plurality of valves are controlled uniformly, so that the purpose of controlling the oxygen generating equipment to carry out complete oxygen generating process is achieved.
When needed, the oxygen generating equipment and the oxygen generating principle designed in the filed document are well known in the industry, and no special description is made here.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (1)
1. An interactive program relay control method for an oxygen production process of oxygen production equipment is characterized by comprising the following steps of: the oxygen generating apparatus includes: the utility model discloses a dust removal filter, which comprises a first adsorption tower (1), a second adsorption tower (2), dust removal filter (3), oxygen buffer device (4), PLC controller (10) and computer (12), the top of first adsorption tower (1) and second adsorption tower (2) all is connected with check valve (5) through sealed pipeline, the one end that first adsorption tower (1) and second adsorption tower (2) were kept away from respectively to two check valves (5) is all connected with dust removal filter (3) through sealed pipeline, the sealed pipeline on top of first adsorption tower (1) is connected with balanced pneumatic valve (16), the one end that first adsorption tower (1) was kept away from to balanced pneumatic valve (16) is connected with second adsorption tower (2) through sealed pipeline, the one end that check valve (5) was kept away from to dust removal filter (3) is connected with oxygen buffer device (4) through sealed pipeline, the one end that dust removal filter (3) was kept away from respectively is connected with electric valve (6) through sealed pipeline, the first air inlet valve (8) are kept away from first air inlet valve (8) through sealed pipeline and first air inlet valve (8) are kept away from respectively to first adsorption tower (1) air inlet valve (8), the device comprises a first air inlet pneumatic valve (8), a second air inlet pneumatic valve (14), a muffler (7), a signal connector (11) and a relay signal connector (11), wherein one 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 sealing pipeline, one end of the second adsorption tower (2) far away from the one-way valve (5) is connected with the second air inlet pneumatic valve (14) through a sealing pipeline, one end of the second air inlet pneumatic valve (14) close to the second adsorption tower (2) is connected with the muffler (7) through a sealing pipeline, one end of the first nitrogen discharge pneumatic valve (13) far away from the first air inlet pneumatic valve (8) is connected with the muffler (7) through a sealing pipeline, the PLC (10) is respectively connected with a balance pneumatic valve (16), a second nitrogen discharge pneumatic valve (15), the first nitrogen discharge pneumatic valve (13), the first air inlet pneumatic valve (8) and the control end of the second air inlet pneumatic valve (14) through signals, the signal connector (11) is arranged on the PLC (10), the signal connector (11) is arranged between the PLC (10) and the signal connector (11), the signal connector (11) is arranged between the PLC and the signal connector (11); the interactive program relay control method comprises the following steps:
s100, splitting a process step controllable program into three parts;
s200, converting the control step through a conversion command and storing the control step into a power-off holding type register;
s300, establishing a human-computer interaction interface according to the conversion command in the step S200, and inputting a control command;
s400, establishing signal connection between the implementation layer and the interface layer;
the PLC (10) is provided with a power-off holding type register, the signal input ends of the PLC (10) and the power-off holding type register are provided with BIN instructions, and the signal output ends of the PLC (10) and the power-off holding type register are provided with BCD instructions;
in the step S100, the original fixed output process step control program is split into three parts, namely a step number, a step action and a step execution time, by modifying the PLC control program, wherein the step number is used as a logic execution sequence, the step action is used as a logic execution command, and the step execution time is used as a step execution time limit;
in the step S200, each action step is converted into a binary number and then stored in a power-off holding register of the PLC through a repeater, a BIN and a BCD instruction, and the step execution time is stored as an unsigned integer in the power-off holding register of the PLC;
in the step S300, a visual man-machine interaction interface is established through signal connection between the PLC controller (10) and the computer (12), wherein a graphic symbol of the man-machine interaction interface is converted into binary by a BIN instruction, and is written into a power-off holding register by a communication protocol;
in step S400, the PLC controller (10) is in signal connection with the control ends of the balance pneumatic valve (16), the second nitrogen-discharging pneumatic valve (15), the first nitrogen-discharging pneumatic valve (13), the first air intake pneumatic valve (8) and the second air intake pneumatic valve (14), so as to establish direct connection between the execution layer and the man-machine interaction interface, and simultaneously, the communication completion station is used for establishing an active data probing mechanism of the PLC bottom layer program on the man-machine interaction interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210044712.8A CN114653162B (en) | 2022-01-14 | 2022-01-14 | Interactive program relay control method for oxygen production process of oxygen production equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210044712.8A CN114653162B (en) | 2022-01-14 | 2022-01-14 | Interactive program relay control method for oxygen production process of oxygen production equipment |
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| CN114653162A CN114653162A (en) | 2022-06-24 |
| CN114653162B true CN114653162B (en) | 2023-12-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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