CN115318062A - Automatic calibration method for oxygen generator - Google Patents
Automatic calibration method for oxygen generator Download PDFInfo
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- CN115318062A CN115318062A CN202211144152.XA CN202211144152A CN115318062A CN 115318062 A CN115318062 A CN 115318062A CN 202211144152 A CN202211144152 A CN 202211144152A CN 115318062 A CN115318062 A CN 115318062A
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- time length
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- oxygen concentration
- adsorption
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000001301 oxygen Substances 0.000 title claims abstract description 86
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000001179 sorption measurement Methods 0.000 claims abstract description 66
- 238000002474 experimental method Methods 0.000 claims description 2
- 239000002808 molecular sieve Substances 0.000 abstract description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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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
- B01D53/047—Pressure swing adsorption
-
- 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
Abstract
The invention provides an automatic calibration method of an oxygen generator, and relates to the field of molecular sieve oxygen generators. The method for automatically calibrating the oxygen generator comprises the following specific steps: s1, setting an adsorption time length X as A seconds, firstly setting a voltage-sharing time length J as B seconds, and adjusting a reference Rx as C seconds; s2, automatically adjusting the adsorption time length X, and obtaining the optimal adsorption time length Xg in the adjustment within an adjustment reference Rx; s3, setting X as Xg seconds, setting the voltage-sharing time length J as B seconds, and setting the adjusting reference Rj of the voltage-sharing time length J as D seconds; and S4, automatically adjusting the voltage-sharing time J. Compared with the traditional method, the X and J time lengths are calibrated manually, the optimal oxygen concentration of the machine can be obtained by manually adjusting various X and J parameter combinations, time and labor are consumed, the method can be used for rapidly and automatically adjusting the X and J time lengths to achieve the optimal oxygen concentration, a plurality of machines can be calibrated simultaneously in production, and the efficiency is improved.
Description
Technical Field
The invention relates to the field of molecular sieve oxygenerators, in particular to an automatic calibration method of an oxygenerator.
Background
The molecular sieve oxygen generator controls two oxygen generation towers to respectively perform the same cycle process by a method of pressurization adsorption and exhaust desorption by using an electromagnetic valve, thereby realizing continuous oxygen generation. The oxygen generation towers are filled with molecular sieves for adsorbing nitrogen, and each oxygen generation tower adsorbs nitrogen when air enters and outputs oxygen; the nitrogen is discharged as an exhaust gas to the outside atmosphere at the time of exhaust. The intake and exhaust may be controlled by solenoid valves.
The schematic diagram of the electromagnetic valve and oxygen making tower part of the oxygen making machine is shown in figure 1. The main control board can:
1. and controlling the electromagnetic valve so as to control whether the oxygen producing tower is communicated with compressed air or external atmosphere. The compressed air is communicated with the air inlet, and the waste gas is exhausted when the compressed air is connected with the external atmosphere.
2. The concentration of oxygen actually generated is obtained by the concentration sensor.
The main control board controls the electromagnetic valve to operate circularly, continuously adsorb nitrogen and output oxygen, and each cycle period is as follows:
the X adsorption time and J pressure equalizing time in the above table have a great influence on the output oxygen concentration. Because of differences in structure, molecular sieve materials, etc., different models, or different machines of the same model may not be identical, each machine needs to be individually calibrated for X and J to achieve optimal oxygen concentration during design and production. The traditional mode adopts a manual mode to calibrate X and J time, and is time-consuming and labor-consuming.
Disclosure of Invention
Technical scheme (I)
In order to achieve the purpose, the invention is realized by the following technical scheme: an automatic calibration method of an oxygen generator comprises the following specific steps:
s1, setting an adsorption time length X as A seconds, firstly setting a pressure equalizing time length J as B seconds, and adjusting a reference Rx as C seconds;
s2, automatically adjusting the adsorption time length X, and obtaining the optimal adsorption time length Xg in the adjustment within an adjustment reference Rx;
s3, setting X as Xg seconds, setting the voltage-sharing time length J as B seconds, and setting the adjusting reference Rj of the voltage-sharing time length J as D seconds;
s4, automatically adjusting the voltage-sharing time length J, and obtaining the optimal voltage-sharing time length Jg in the adjustment within an adjustment reference Rj;
s5, setting J as Jg seconds, and setting an adjusting reference Rx of the adsorption time length X as a part of C;
s6, automatically adjusting the adsorption time length X, and obtaining the optimal adsorption time length Xg in the adjustment within an adjustment reference Rx;
s7, setting X as Xg, wherein the X and J values are the optimal values.
Preferably, the values of A, B and C in S1 are set according to actual conditions, the adsorption time of a common oxygen generator is between 1 second and 15 seconds, and the pressure equalizing time is between 0.0 second and 1.6 seconds.
Further, in the S2, in the present adjustment, when the adsorption time is Xg seconds, the oxygen concentration is maximum.
Further, in the present adjustment, when the pressure equalizing time is Jg seconds, the oxygen concentration is the maximum in S4.
Further, in S5, because this time is fine tuning, rx may be 1/4 of C.
Further, in the present adjustment, when the adsorption time is Xg seconds, the oxygen concentration is the maximum in S6.
Furthermore, the method for automatically calibrating the oxygen generator finds that the X is from the minimum to the maximum, the oxygen generation concentration is firstly large and then small, the J is from the minimum to the maximum, the oxygen generation concentration is firstly large and then small, after the value of the J is changed, the optimal X has slight change, fine adjustment is needed to be carried out to rapidly automatically adjust the oxygen generation concentration to the optimal X or J within the set range for Rx or Ry, and a halving adjustment method can be adopted according to the experimental characteristics.
Further, the process of automatically adjusting the adsorption time length X is as follows:
s1, setting the adsorption time length to be X, fixing the pressure equalization to be J, and setting a range variable r to be Rx;
s2, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration H1 at the moment;
s3, setting the adsorption time length X = X-r;
s4, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration at the moment as H2;
s5, setting the adsorption time length X = X + r;
s6, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration at the moment as H3;
s7, taking the adsorption time length corresponding to the maximum values of H1, H2 and H3 as Xmax;
and S8, judging the size of r.
Still further, the method for adjusting the pressure equalizing time length J is similar to the method for adjusting the adsorption time length X as follows:
s1, fixing adsorption time length to be X, setting pressure equalizing time length to be J, and setting a range variable r to be Rj;
s2, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration H1 at the moment;
s3, setting a voltage-sharing time length J = J-r;
s4, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration at the moment as H2;
s5, setting voltage-sharing time J = J + r;
s6, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration at the moment as H3;
s7, setting the voltage-sharing duration corresponding to the maximum values of H1, H2 and H3 as Jmax;
and S8, judging the size of r.
Further, if the size of r in the process of automatically adjusting the adsorption time length X is judged to be r > = time length precision, the adsorption time length X is set to be Xmax, r is halved, then the step 2 is carried out, if r < time length precision, the optimal adsorption time length Xg is obtained to be Xmax, and the process is ended;
in the method for adjusting the voltage-sharing time length J, if the size of r is judged to be r > = time length precision, the voltage-sharing time length J is set to be Jmax, r is halved, then the step 2 is carried out, if the r is the time length precision, the optimal voltage-sharing time length Jg is obtained to be Jmax, and the process is ended
(II) advantageous effects
The invention provides an automatic calibration method of an oxygen generator. The method has the following beneficial effects: compared with the traditional method, the X and J time lengths are calibrated manually, the optimal oxygen concentration of the machine can be obtained by manually adjusting various X and J parameter combinations, time and labor are consumed, the method can be used for rapidly and automatically adjusting the X and J time lengths to achieve the optimal oxygen concentration, a plurality of machines can be calibrated simultaneously in production, and the efficiency is improved.
Drawings
FIG. 1 is a schematic view of the electromagnetic valve and oxygen making tower of the oxygen making machine of the present invention;
FIG. 2 is a diagram of the steps of the method of the present invention;
FIG. 3 is a flow chart of a process for automatically adjusting the adsorption duration X according to the present invention;
fig. 4 is a flow chart of the present invention for automatically adjusting the adsorption time period J.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, an embodiment of the present invention provides an automatic calibration method for an oxygen generator, where the automatic calibration method for an oxygen generator includes the following specific steps:
s1, setting an adsorption time length X as A seconds, setting a pressure equalizing time length J as B seconds, and adjusting a reference Rx as C seconds. The values of A, B and C are set according to actual conditions. Such as: the adsorption time of a common oxygen generator is between 1 second and 15 seconds, the pressure equalizing time is between 0.0 second and 1.6 seconds, in the example, the value A can be 8 seconds, the value B can be 0.8 second, and the value C can be 4 seconds;
s2, automatically adjusting the adsorption time length X, and obtaining the optimal adsorption time length Xg in the adjustment within the adjustment benchmark Rx (namely, in the adjustment, when the adsorption time length is Xg seconds, the oxygen concentration is maximum). In this round of adjustment, for convenience of explanation, it is assumed that the obtained Xg is 3 seconds;
s3, setting X to Xg seconds (3 seconds in the example), setting the voltage-equalizing time period J to B seconds, and setting an adjusting reference Rj of the voltage-equalizing time period J to D seconds. In this example, D may be 0.4 seconds;
and S4, automatically adjusting the pressure equalizing time length J, and obtaining the optimal pressure equalizing time length Jg in the adjustment (namely, in the adjustment, when the pressure equalizing time length is Jg seconds, the oxygen concentration is maximum). In this round of adjustment, for convenience of explanation, it is assumed that the obtained Jg is 0.6 seconds;
s5, setting J to Jg seconds (0.6 seconds in the example), and setting the adjusting reference Rx of the adsorption time length X as a part of C, wherein Rx can be 1/4 of C because the fine adjustment is performed at this time, in the example: 1 second;
s6, automatically adjusting the adsorption time length X, and obtaining the optimal adsorption time length Xg in the adjustment within the adjustment reference Rx (namely, in the adjustment, when the adsorption time length is Xg seconds, the oxygen concentration is maximum). In this round of adjustment, for ease of explanation, it is assumed that Xg is obtained for 3.5 seconds;
s7, setting X as Xg, wherein the X and J values are the optimal values, namely: x is 3.5 seconds, J is 0.6 seconds.
Through experiments, the following results are found:
from minimum to maximum (from 1 to 16 seconds in this example), the oxygen production concentration is first greater and then smaller;
2.J from minimum to maximum (from 0.0 second to 1.6 seconds in this example), oxygen generation concentration is first increased and then decreased;
3. after the value of J is changed, the optimal X may slightly change, and needs to be fine-tuned, in order to quickly and automatically adjust to the optimal X or J within a set range (Rx or Ry), according to experimental characteristics, a binary adjustment method may be adopted, and the process of automatically adjusting the adsorption duration X is as shown in fig. 3:
1. setting the adsorption time length to be X, fixing the pressure equalizing to be J, and setting the range variable r to be Rx
2. The oxygen concentration H1 at this time is obtained by waiting for the oxygen concentration to stabilize (which varies depending on the apparatus, usually 3 to 4 minutes)
3. Setting the adsorption time length X = X-r
4. Waiting for the oxygen concentration to stabilize, and obtaining the oxygen concentration at this time as H2
5. Setting the adsorption time length X = X + r
6. When the oxygen concentration is stabilized, the oxygen concentration is H3
7. And taking the adsorption time length corresponding to the maximum values of H1, H2 and H3 as Xmax.
8. Judging the size of r, if:
(1) r > = duration accuracy, then: setting the adsorption time length X as Xmax, and r is halved (namely, r = r 0.5); then go to step 2.
(2) r < duration precision, then: the optimum adsorption time Xg is obtained as Xmax and the process is ended.
The time length accuracy of the adsorption is usually 0.1 second.
The above process steps are given for example in the following table, which describes the adsorption time period X initially being 3.0 seconds and the optimum adsorption time period finally obtained being 3.5 seconds with Rx being 1 second.
The method of adjusting the pressure equalizing time period J is similar to the method of adjusting the adsorption time period X, as shown in fig. 4:
1. fixing the adsorption time length to X, setting the pressure equalizing time length to J, and setting the range variable r to Rj
2. When the oxygen concentration is stabilized, the oxygen concentration H1 at that time is obtained
3. Setting voltage-sharing duration J = J-r
4. Waiting for the oxygen concentration to stabilize, and obtaining the oxygen concentration at this time as H2
5. Setting voltage-sharing duration J = J + r
6. When the oxygen concentration is stabilized, the oxygen concentration is H3
7. And taking the voltage-sharing duration corresponding to the maximum values of H1, H2 and H3 as Jmax.
8. Judging the size of r, if:
(1) r > = duration accuracy, then: setting the pressure equalizing time J as Jmax, and dividing r by half (namely r = r 0.5); then go to step 2.
(2) r < duration precision, then: and obtaining the optimal voltage-sharing time Jg as Jmax, and ending the process.
Generally, the time length precision of pressure equalization is 0.1 second.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The method for automatically calibrating the oxygenerator is characterized in that: the method for automatically calibrating the oxygen generator comprises the following specific steps:
s1, setting an adsorption time length X as A seconds, firstly setting a voltage-sharing time length J as B seconds, and adjusting a reference Rx as C seconds;
s2, automatically adjusting the adsorption time length X, and obtaining the optimal adsorption time length Xg in the adjustment within an adjustment reference Rx;
s3, setting X as Xg seconds, setting the voltage-sharing time length J as B seconds, and setting an adjusting reference Rj of the voltage-sharing time length J as D seconds;
s4, automatically adjusting the voltage-sharing time length J, and obtaining the optimal voltage-sharing time length Jg in the adjustment in an adjustment reference Rj;
s5, setting J as Jg seconds, and setting an adjusting reference Rx of the adsorption time length X as a part of C;
s6, automatically adjusting the adsorption time length X, and obtaining the optimal adsorption time length Xg in the adjustment within the adjustment reference Rx;
s7, setting X as Xg, wherein the X and J values are the optimal values.
2. The method of claim 1, wherein the method further comprises the steps of: the values of A, B and C are set in the S1 according to actual conditions, the adsorption time of a common oxygen generator is between 1 second and 15 seconds, and the pressure equalizing time is between 0.0 second and 1.6 seconds.
3. The method of claim 1, wherein the method further comprises the steps of: and S2, in the adjustment, when the adsorption time is Xg seconds, the oxygen concentration is maximum.
4. The method of claim 1, wherein the method further comprises the steps of: and S4, in the adjustment, when the pressure equalizing time is Jg seconds, the oxygen concentration is the maximum.
5. The method of claim 1, wherein the method comprises the steps of: in S5, rx may be 1/4 of C because the fine tuning is performed at this time.
6. The method of claim 1, wherein the method further comprises the steps of: and S6, in the adjustment, when the adsorption time is Xg seconds, the oxygen concentration is maximum.
7. The method of claim 1, wherein the method comprises the steps of: according to the method for automatically calibrating the oxygen generator, experiments show that X is from minimum to maximum, oxygen generation concentration is firstly large and then small, J is from minimum to maximum, oxygen generation concentration is firstly large and then small, after the value of J is changed, the optimal X has small change, fine adjustment is needed to be carried out, the optimal X or J is automatically adjusted to be Rx or Ry within a set range rapidly, and a half-folding adjustment method can be adopted according to experimental characteristics.
8. The method of claim 1, wherein the method comprises the steps of: the process for automatically adjusting the adsorption time length X is as follows:
s1, setting the adsorption time length to be X, fixing the pressure equalization to be J, and setting a range variable r to be Rx;
s2, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration H1 at the moment;
s3, setting the adsorption time length X = X-r;
s4, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration at the moment as H2;
s5, setting adsorption time length X = X + r;
s6, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration at the moment as H3;
s7, setting the adsorption time length corresponding to the maximum values of H1, H2 and H3 as Xmax;
and S8, judging the size of r.
9. The method of claim 8, wherein the method comprises the steps of: the method for adjusting the pressure equalizing time length J is similar to the method for adjusting the adsorption time length X, and comprises the following steps:
s1, fixing adsorption time length to be X, setting pressure equalizing time length to be J, and setting a range variable r to be Rj;
s2, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration H1 at the moment;
s3, setting a voltage-sharing time length J = J-r;
s4, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration at the moment as H2;
s5, setting voltage-sharing time J = J + r;
s6, waiting for the oxygen concentration to be stable, and obtaining the oxygen concentration at the moment as H3;
s7, setting the voltage-sharing duration corresponding to the maximum values of H1, H2 and H3 as Jmax;
and S8, judging the size of r.
10. The method of claim 1, wherein the method further comprises the steps of: if the size of r is judged to be r > = duration precision in the process of automatically adjusting the adsorption duration X, setting the adsorption duration X as Xmax, and turning to the step 2, if r is less than the duration precision, obtaining the optimal adsorption duration Xg as Xmax, and ending the process;
in the method for adjusting the voltage-sharing time length J, if the value of r is judged to be r > = time length precision, the voltage-sharing time length J is set to be Jmax, r is halved, then the step 2 is carried out, if r is less than the time length precision, the optimal voltage-sharing time length Jg is obtained to be Jmax, and the process is ended.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0760247A2 (en) * | 1995-08-30 | 1997-03-05 | DeVilbiss Health Care, Inc. | Oxygen concentrator monitoring system |
| US5858063A (en) * | 1997-06-03 | 1999-01-12 | Litton Systems, Inc. | Oxygen concentrator with beds' duty cycle control and self-test |
| JP2008110337A (en) * | 2006-10-04 | 2008-05-15 | Air Products & Chemicals Inc | Method for pressure swing adsorption |
| WO2010060301A1 (en) * | 2008-11-26 | 2010-06-03 | Weng Zhaoguo | Adsorption tower up-lid integration of oxygen-making apparatus |
| CN101932831A (en) * | 2006-04-03 | 2010-12-29 | 伟康公司 | Portable oxygen concentrator |
| CN112957887A (en) * | 2021-01-28 | 2021-06-15 | 中石化南京工程有限公司 | Full-automatic ammonia adding method and system for ammonia desulphurization device |
-
2022
- 2022-09-20 CN CN202211144152.XA patent/CN115318062A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0760247A2 (en) * | 1995-08-30 | 1997-03-05 | DeVilbiss Health Care, Inc. | Oxygen concentrator monitoring system |
| US5858063A (en) * | 1997-06-03 | 1999-01-12 | Litton Systems, Inc. | Oxygen concentrator with beds' duty cycle control and self-test |
| CN101932831A (en) * | 2006-04-03 | 2010-12-29 | 伟康公司 | Portable oxygen concentrator |
| JP2008110337A (en) * | 2006-10-04 | 2008-05-15 | Air Products & Chemicals Inc | Method for pressure swing adsorption |
| WO2010060301A1 (en) * | 2008-11-26 | 2010-06-03 | Weng Zhaoguo | Adsorption tower up-lid integration of oxygen-making apparatus |
| CN112957887A (en) * | 2021-01-28 | 2021-06-15 | 中石化南京工程有限公司 | Full-automatic ammonia adding method and system for ammonia desulphurization device |
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