CN220735690U - Oxygen concentration adjusting system of micro-pressure oxygen cabin - Google Patents
Oxygen concentration adjusting system of micro-pressure oxygen cabin Download PDFInfo
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- CN220735690U CN220735690U CN202322203028.2U CN202322203028U CN220735690U CN 220735690 U CN220735690 U CN 220735690U CN 202322203028 U CN202322203028 U CN 202322203028U CN 220735690 U CN220735690 U CN 220735690U
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- oxygen
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- oxygen concentration
- cabin
- electromagnetic valve
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- 239000001301 oxygen Substances 0.000 title claims abstract description 190
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 190
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 188
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 230000036737 immune function Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008557 oxygen metabolism Effects 0.000 description 1
- 238000002640 oxygen therapy Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model discloses an oxygen concentration regulating system of a micro-pressure oxygen cabin, which comprises an oxygen concentration analyzer, a programmable controller, a man-machine interface, a micro-electric valve, an electromagnetic valve and an oxygenerator, wherein the oxygen concentration analyzer is connected to an RS485 communication interface of the programmable controller; the communication interface of the human-computer interface is connected with the communication interface of the programmable controller, the oxygenerator is connected with the electromagnetic valve, the electromagnetic valve is connected with the micro electric valve, and the micro electric valve is connected with the micro oxygen cabin; the oxygenerator is used for providing oxygen sources for the micro-pressure oxygen cabin, and the electromagnetic valve is used for switching the air inlet sources provided by the oxygenerator. The utility model can select the gas entering the micro-pressure oxygen cabin through the opening and closing of the electromagnetic valve, the oxygen concentration in the cabin is reduced when the gas enters the nitrogen-rich gas, the oxygen concentration in the cabin is increased when the gas enters the oxygen-rich gas, and the reasonable control of the oxygen concentration in the micro-pressure oxygen cabin is realized.
Description
Technical Field
The utility model belongs to the technical field of oxygen cabins, and particularly relates to an oxygen concentration adjusting system of a micro-pressure oxygen cabin.
Background
The principle of oxygen therapy by the micro-pressure oxygen cabin is as follows: the pressure environment of the micro-pressure oxygen cabin is improved in an air pressurizing mode, oxygen molecules in the air are easier to compress under a high-pressure environment, the oxygen concentration in the micro-pressure oxygen cabin is improved accordingly, meanwhile, the PSA oxygen production technology is utilized to continuously provide high-concentration oxygen for the micro-pressure oxygen cabin, the oxygen concentration in the micro-pressure oxygen cabin can be increased by the oxygen molecules, and oxygen metabolism of cells can be promoted by sucking the high-concentration oxygen in a proper time, cell hypoxia is corrected, and an immune function is regulated. The higher the oxygen concentration is, the better the oxygen concentration is, and long-time inhalation of high-concentration oxygen can cause certain damage to human tissue cells, so that the reasonable control of the oxygen concentration in the micro-pressure oxygen cabin is particularly important.
The mode of the oxygen concentration in the existing micro-pressure oxygen cabin lifting cabin is as follows: the pressure environment of the micro-pressure oxygen cabin is improved, and high-concentration oxygen is continuously supplied into the micro-pressure oxygen cabin, so that the oxygen concentration in the micro-pressure oxygen cabin is improved to meet the oxygen concentration standard of the civil oxygen cabin, and the oxygen concentration in the cabin cannot be stabilized at a specific value in the process. In the process of lifting the pressure of the micro-pressure oxygen cabin, as the ambient pressure in the micro-pressure oxygen cabin is lifted, oxygen molecules are compressed so that the oxygen concentration in the micro-pressure oxygen cabin is continuously increased, and the oxygen concentration in the micro-pressure oxygen cabin cannot be regulated down at the moment; therefore, the existing micro-pressure oxygen cabin is in an oxygen-enriched state in the working state, cannot provide a low-oxygen state, and can be used in special places, such as simulated plateau training and the like. Therefore, in order to meet the oxygen concentration standard of the civil micro-pressure oxygen cabin, an adjusting system capable of reasonably adjusting the oxygen concentration in the cabin of the micro-pressure oxygen cabin is needed.
Disclosure of Invention
The utility model aims at the problems, overcomes the defects of the prior art, and provides an oxygen concentration regulating system of a micro-pressure oxygen cabin.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the oxygen concentration regulating system of the micro-pressure oxygen cabin comprises an oxygen concentration analyzer, a programmable controller, a human-computer interface, a micro-electric valve, an electromagnetic valve and an oxygen generator, wherein the oxygen concentration analyzer is connected to an RS485 communication interface of the programmable controller, the micro-electric valve is connected with an analog output interface of the programmable controller, and the electromagnetic valve is connected with a digital output interface of the programmable controller; the communication interface of the human-computer interface is connected with the communication interface of the programmable controller, the oxygenerator is connected with the electromagnetic valve, the electromagnetic valve is connected with the micro electric valve through a pipeline, and the micro electric valve is connected with the micro oxygen cabin; the oxygenerator is used for continuously providing oxygen sources for the micro-pressure oxygen cabin, and the electromagnetic valve is used for switching the air inlet sources provided by the oxygenerator.
Further, the programmable controller comprises an oxygen concentration closed-loop PID module and a filtering module, wherein the signal output end of the oxygen concentration analyzer is connected with the oxygen concentration closed-loop PID module through the filtering module, and the oxygen concentration closed-loop PID module is respectively connected with the miniature electric valve and the electromagnetic valve.
Further, the miniature electric valve adopts a miniature electric proportional ball valve.
Further, the electromagnetic valve adopts a two-position three-way electromagnetic valve.
Further, the oxygenerator comprises an adsorption tower A, an adsorption tower B, a nitrogen storage tank, an oxygen storage tank and an air inlet valve, wherein the air inlet valve is respectively connected with air inlets of the adsorption tower A, the adsorption tower B and the nitrogen storage tank, air outlets of the adsorption tower A and the adsorption tower B are jointly connected with the oxygen storage tank, and the oxygen storage tank is connected with the electromagnetic valve.
Compared with the prior art, the utility model has the beneficial effects that:
1. the oxygen concentration regulating system of the micro-pressure oxygen cabin provided by the utility model has simple composition and connection mode, and realizes reasonable control of the oxygen concentration in the micro-pressure oxygen cabin.
2. The utility model can set the oxygen concentration value according to the human-computer interface, and can select the gas entering the micro-pressure oxygen cabin through the opening and closing of the electromagnetic valve, the oxygen concentration in the cabin is reduced when entering the nitrogen-rich gas, and the oxygen concentration in the cabin is increased when entering the oxygen-rich gas.
3. The programmable controller of the utility model adopts the oxygen concentration closed-loop PID module to control, so that the oxygen concentration value in the micro-pressure oxygen cabin can be stabilized at a set value; the opening amplitude of the miniature electric valve can be adjusted by utilizing the oxygen concentration closed-loop PID module to control the air inlet flow, so as to control the change speed of the oxygen concentration in the micro-pressure oxygen cabin.
4. In the utility model, the oxygen concentration value can be set to be lower than 21%, so that the micro-pressure oxygen cabin can reach a low-oxygen environment.
Drawings
FIG. 1 is a schematic block diagram of an oxygen concentration regulating system of a micro-pressure oxygen cabin according to the present utility model.
FIG. 2 is a flow chart of the control of a micro-pressure oxygen chamber by using the oxygen concentration adjusting system of the micro-pressure oxygen chamber.
In the figure: 1 is an oxygen concentration analyzer; 2 is a programmable controller; 3 is a miniature electric valve; 4, a human-machine interface; 5 is an electromagnetic valve; and 6 is an oxygenerator.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, the embodiment of the utility model provides an oxygen concentration adjusting system of a micro-pressure oxygen cabin, which comprises an oxygen concentration analyzer 1, a programmable controller 2, a man-machine interface 4, a micro electric valve 3, an electromagnetic valve 5 and an oxygen generator 6, wherein the micro electric valve 3 adopts a micro electric proportional ball valve, and the electromagnetic valve 5 adopts a two-position three-way electromagnetic valve; the oxygen concentration analyzer 1 is connected to an RS485 communication interface of the programmable controller 2, the miniature electric valve 3 is connected with an analog quantity output interface of the programmable controller 2, and the electromagnetic valve 5 is connected with a digital quantity output interface of the programmable controller 2; the communication interface of the man-machine interface 4 is connected with the communication interface of the programmable controller 2, the oxygen generator 6 is connected with the electromagnetic valve 5, the electromagnetic valve 5 is connected with the micro electric valve 3 through a pipeline, and the micro electric valve 3 is connected with the micro oxygen cabin; the oxygenerator 6 is used for continuously providing oxygen sources for the micro-pressure oxygen cabin, and the electromagnetic valve 5 is used for switching the air inlet sources provided by the oxygenerator 6.
The programmable controller 2 comprises an oxygen concentration closed-loop PID module and a filtering module, wherein the signal output end of the oxygen concentration analyzer 1 is connected with the oxygen concentration closed-loop PID module through the filtering module, and the oxygen concentration closed-loop PID module is respectively connected with the miniature electric valve 3 and the electromagnetic valve 5.
The oxygenerator 6 comprises an adsorption tower A, an adsorption tower B, a nitrogen storage tank, an oxygen storage tank and an air inlet valve, wherein the air inlet valve is respectively connected with air inlets of the adsorption tower A, the adsorption tower B and the nitrogen storage tank, air outlets of the adsorption tower A and the adsorption tower B are jointly connected with the oxygen storage tank, and the oxygen storage tank is connected with the electromagnetic valve 5.
Specifically, the oxygen concentration analyzer 1 is a high-precision oxygen concentration sensor, the measurement range is 10% -99.99%, the stability is +/-0.5%, the communication mode of the oxygen concentration analyzer 1 adopts RS485, and the oxygen concentration analyzer 1 is used for accurately detecting the real-time in-cabin oxygen concentration of the micro-pressure oxygen cabin and feeding back to the filtering module of the programmable controller 2. In this embodiment, the programmable controller 2 is responsible for controlling the oxygen concentration in the micro-pressure oxygen cabin, the micro-electric valve 3 is a micro-electric proportional ball valve, and analog quantity control is adopted to receive the control instruction of the programmable controller 2, so as to control the flow of the gas entering the micro-pressure oxygen cabin. The human-computer interface 4 is used for setting the oxygen concentration in the micro-pressure oxygen cabin and displaying the oxygen concentration change curve of the micro-pressure oxygen cabin. The electromagnetic valve 5 is a two-position three-way electromagnetic valve and is used for switching the air inlet source provided by the oxygenerator 6. The oxygenerator 6 is an oxygenerator adopting a PSA oxygenerator process and is used for continuously providing an oxygen source for the micro-pressure oxygen cabin; since the oxygenerator 6 is a mature technology in the market, only a schematic description of its structure is given in this embodiment, and the detailed structure of the interior is not described in detail.
The working principle of the oxygen concentration regulating system of the micro-pressure oxygen cabin is as follows: the PSA oxygen production process of the oxygenerator 6 is utilized, compressed air enters the adsorption tower A and the adsorption tower B through the air inlet valve, oxygen-enriched gas which normally works by the oxygenerator 6 is discharged from the upper ends of the adsorption tower A and the adsorption tower B and is stored in the oxygen storage tank, nitrogen-enriched gas is discharged in the analysis process and is stored in the nitrogen storage tank, at the moment, the gas entering the cabin can be selected through the opening and closing of the electromagnetic valve 5, the oxygen concentration in the cabin is reduced when the nitrogen-enriched gas is entered, and the oxygen concentration in the cabin is increased when the oxygen-enriched gas is entered. Meanwhile, the programmable controller 2 receives the data of the oxygen concentration analyzer 1, and adjusts the opening amplitude of the micro electric valve 3 by utilizing the oxygen concentration closed-loop PID module to control the air inlet flow, so as to control the change speed of the oxygen concentration in the micro-pressure oxygen cabin.
The working process of the oxygen concentration regulating system of the micro-pressure oxygen cabin comprises the following steps: as shown in the control flow chart of fig. 2, a user sets parameters in the human-computer interface 4, sets the oxygen concentration in the micro-pressure oxygen cabin, and transmits the information to the programmable controller 2, the oxygen concentration analyzer 1 reads the current oxygen concentration of the micro-pressure oxygen cabin in real time and feeds the current oxygen concentration back to the filtering module of the programmable controller 2, and filters the data of the oxygen concentration value, so that the read data is real and reliable.
The oxygen concentration closed-loop PID module in the programmable controller 2 firstly compares the cabin oxygen concentration value read by the oxygen concentration analyzer 1 with the cabin oxygen concentration value set in the human-computer interface 4, and controls the electromagnetic valve 5 to switch to the oxygen storage tank side if the oxygen concentration needs to be increased, and otherwise controls the electromagnetic valve 5 to switch to the nitrogen storage tank side if the oxygen concentration needs to be reduced.
The oxygen concentration closed-loop PID module in the programmable controller 2 starts PID closed-loop adjustment according to the oxygen concentration value in the cabin read by the oxygen concentration analyzer 1, and the micro electric valve 3 adjusts the opening amplitude according to the PID output value until the oxygen concentration in the cabin of the micro-pressure oxygen cabin reaches a set value and is stable. The gain parameter in the oxygen concentration PID closed loop module is an integer, and the proportional time and the differential time can be adjusted according to the volume of the micro-pressure oxygen cabin to determine the response time of the oxygen concentration reaching the target value.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (5)
1. An oxygen concentration control system of micro-pressure oxygen cabin, characterized in that: the oxygen concentration analyzer is connected to an RS485 communication interface of the programmable controller, the micro electric valve is connected with an analog quantity output interface of the programmable controller, and the electromagnetic valve is connected with a digital quantity output interface of the programmable controller; the communication interface of the human-computer interface is connected with the communication interface of the programmable controller, the oxygenerator is connected with the electromagnetic valve, the electromagnetic valve is connected with the micro electric valve through a pipeline, and the micro electric valve is connected with the micro oxygen cabin; the oxygenerator is used for continuously providing oxygen sources for the micro-pressure oxygen cabin, and the electromagnetic valve is used for switching the air inlet sources provided by the oxygenerator.
2. The oxygen concentration regulating system of a micro-pressure oxygen chamber according to claim 1, wherein: the programmable controller comprises an oxygen concentration closed-loop PID module and a filtering module, wherein the signal output end of the oxygen concentration analyzer is connected with the oxygen concentration closed-loop PID module through the filtering module, and the oxygen concentration closed-loop PID module is respectively connected with the miniature electric valve and the electromagnetic valve.
3. The oxygen concentration regulating system of a micro-pressure oxygen chamber according to claim 1, wherein: the miniature electric valve adopts a miniature electric proportional ball valve.
4. The oxygen concentration regulating system of a micro-pressure oxygen chamber according to claim 1, wherein: the electromagnetic valve adopts a two-position three-way electromagnetic valve.
5. The oxygen concentration regulating system of a micro-pressure oxygen chamber according to claim 1, wherein: the oxygenerator comprises an adsorption tower A, an adsorption tower B, a nitrogen storage tank, an oxygen storage tank and an air inlet valve, wherein the air inlet valve is respectively connected with air inlets of the adsorption tower A, the adsorption tower B and the nitrogen storage tank, air outlets of the adsorption tower A and the adsorption tower B are jointly connected with the oxygen storage tank, and the oxygen storage tank is connected with an electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322203028.2U CN220735690U (en) | 2023-08-16 | 2023-08-16 | Oxygen concentration adjusting system of micro-pressure oxygen cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322203028.2U CN220735690U (en) | 2023-08-16 | 2023-08-16 | Oxygen concentration adjusting system of micro-pressure oxygen cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220735690U true CN220735690U (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322203028.2U Active CN220735690U (en) | 2023-08-16 | 2023-08-16 | Oxygen concentration adjusting system of micro-pressure oxygen cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220735690U (en) |
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2023
- 2023-08-16 CN CN202322203028.2U patent/CN220735690U/en active Active
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