CN107934918A - A kind of oxygen control system processed of PSA oxygenerators - Google Patents
A kind of oxygen control system processed of PSA oxygenerators Download PDFInfo
- Publication number
- CN107934918A CN107934918A CN201711286783.4A CN201711286783A CN107934918A CN 107934918 A CN107934918 A CN 107934918A CN 201711286783 A CN201711286783 A CN 201711286783A CN 107934918 A CN107934918 A CN 107934918A
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- China
- Prior art keywords
- oxygen
- control system
- control
- oxygen concentration
- dew point
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Classifications
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- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0028—Separation of the specific gas from gas mixtures containing a minor amount of this specific gas
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0046—Nitrogen
Abstract
The present invention provides a kind of oxygen control system processed of PSA oxygenerators.The PSA oxygenerators include air compressor machine, cooling driers, oxygenerator, and the oxygen control system processed of the PSA oxygenerators includes at least air tank drainage system and oxygen concentration adjustment control and warning system and cooling driers control system and PLC control program and network control system；The air tank drainage system includes at least the pressure sensor of air reservoir bottom installation and the draining Pneumatic valve of air reservoir bottom installation and the dew point monitoring device of air reservoir outlet installation.The drainage system of the control system in air reservoir bottom by installing a pressure sensor and a draining Pneumatic valve, installation dew point monitoring device is exported in air reservoir, can be precisely controlled according to air pressure tank and dew point the water discharge time of air tank and pumpway every, be it is a kind of control more precisely, the oxygen control system processed for the PSA oxygenerators that performance is more stable, security is good.
Description
Technical field
It is particularly a kind of to control the PSA more accurate, performance is more stable, security is good the present invention relates to technical field of oxygen generation
The oxygen control system processed of oxygenerator.
Background technology
The deficiency of the control system of existing PSA oxygenerators has：
1st, traditional air tank drainage system is by installing electronic drain valve or float drain valve in air pot bottom
Realize, basic principle is that water discharge time has been previously set or has floated floating ball when being reach a certain height according to the water level in tank
Rise so as to draining, water discharge time and drainage gap can only be previously set in electronic drain valve, and time interval cannot be set too
It is short, be not suitable for some particular/special requirement occasions, and float drain valve is low in environment temperature, in the case that air source quality is bad, holds
Fluid easily occurs to condense floating ball, causes drain valve not open；
2nd, traditional oxygenerator can export failure when detecting that oxygen concentration is less than 90% and autostop causes hospital
Need that with during oxygen enough oxygen can not be provided, while oxygenerator situation is just known after oxygen concentration is less than 90% by hospital,
And only just notify producer to be safeguarded after oxygenerator is completely not all right and cause hospital to need not supplied oxygen with oxygen in time
Situation；
3rd, traditional oxygenerator when detecting that air dew point is low or cooling driers failure occurs just can to cooling driers into
Row maintenance, while current cold dryer system control be mainly simple start-up and shut-down control, while only cooling driers start setting when
Between after the simple control flow that is just started of air compressor machine, be directed to cooling driers dew point itself adjust, the adjustment of coolant quantity and
The adjustment of by-passing valve can not all carry out, while when being shut down when ice is stifled occur in cooling driers.
The content of the invention
The purpose of the present invention is poor for existing air tank drainage system structure control, water discharge time set it is inconvenient or
It is easy to cause draining failure, oxygen concentration adjustment control and warning system imperfection, the simple deficiency of cooling driers control, there is provided one
The oxygen control system processed of kind PSA oxygenerators, the drainage system of the control system passes through installs a pressure in air reservoir bottom
Sensor and a draining Pneumatic valve, installation dew point monitoring device is exported in air reservoir, can be according to air pressure tank and dew point
The water discharge time of air tank and pumpway are precisely controlled every while improving oxygen concentration adjustment control and warning system, and improve
Cooling driers control system, is a kind of oxygen control system processed for controlling the PSA oxygenerators more accurate, performance is more stable, security is good.
In order to solve above-mentioned prior art problem, the technical scheme is that:
A kind of oxygen control system processed of PSA oxygenerators of the present invention, the PSA oxygenerators include air compressor machine, cooling driers, oxygen processed
Machine, the oxygenerator include babinet and pipeline assembly and adsorption tower component and control system on babinet, the babinet
Top is provided with pressure gauge, display module and warning system, and the adsorption tower component includes the first adsorption tower component and second and inhales
Attached tower assembly, the first adsorption tower component include the first upper vent and first time blow vent, the second adsorption tower component
Including the second upper vent and second time blow vent；
As an improvement, the oxygen control system processed of the PSA oxygenerators includes at least air tank drainage system and oxygen concentration
Adjustment control and warning system and cooling driers control system and PLC control program and network control system；
As an improvement, the air tank drainage system includes at least the pressure sensor and sky of air reservoir bottom installation
The draining Pneumatic valve of gas storage tank bottom installation and the dew point monitoring device of air reservoir outlet installation；
The keying of the draining Pneumatic valve, water discharge time, pumpway are controlled every by PLC control program, during the draining
Between, pumpway every setting can be accurate to Millisecond；
The pattern of the draining Pneumatic valve is：
By setting pressure sensor on air tank, when the pressure on air tank is pressed close to the shutdown of air compressor machine or unloading
During power, draining Pneumatic valve is opened, and excessive gas is discharged, while discharge part moisture；When the gas dew point of air tank outlet
Rise, by PLC program control increase water discharge time or reduce pumpway every, reduce air reservoir in moisture content, and then
Dew point is reduced, to ensure the quality of source of the gas；When air reservoir pressure is reduced to setting value, controlled, reduced by PLC program
Water discharge time or increase pumpway are every ensureing the pressure of air reservoir more than a stationary value；Expire when in guarantee source of the gas dew point
On the premise of sufficient requirement, excessive draining causes air reservoir hypotony, and repeatedly adjustment is still unable to reach balance
In the case of, alert program is started by PLC program control system, starts buzzer and alarm lamp, while pass through remote control
Program is alarmed using short message or other modes to apparatus manager.
Oxygen concentration adjustment control and warning system include at least be arranged on oxygen tank oxygen concentration sensor,
And the oxygen tank pressure gauge that is arranged on oxygen tank and the flow instrument and alarm that are arranged at oxygen tank output terminal；
The oxygen concentration adjustment controls and warning mode is：
By gathering the oxygen concentration of oxygen concentration sensor, the pressure and present flow rate value of oxygen tank are simultaneously transmitted to
In PLC controller, PLC controller analyzes oxygen concentration, and establishes the database of oxygen density value；Database can be to oxygen
Gas concentration and time relationship progress tracing analysis, 5 gears of system offer (more than 95%, 93~95%, 93~92%, 92~
91%, 91~90%) programme-control flow, different purging amounts for different oxygen concentration range restraint blow off valves are simultaneously led to
Cross the standby pressure of adjustment oxygen flow and oxygen tank in time and concede to control by distinct program in low-grade location oxygen concentration and allow oxygen
Concentration quickly goes back up to high concentration gear；Simultaneity factor can first be issued warning signal when concentration is 91%, and pass through high in the clouds
Control system, tele-control system, cellphone control system carry out early warning prompting, remind manufacturer, Hospital Supervisor in time into
Row site inspection and real time monitoring；System can pass through the oxygen concentration after the curve of concentration reduction and the adjustment of programme-control flow
Analyzed, (system is arranged to adjust 2 sections still when adjustment control program occur and can not still improve oxygen concentration
Concentration can not be improved, for example oxygen concentration initial value is 95.2%, can not still be improved when oxygen concentration is reduced to 93~92%)
Manufacturer can be reminded, it is necessary to be maintained or overhauled by high in the clouds, prevent oxygen concentration from just notifying factory already below 90%
Family's maintenance delays hospital's oxygen situation.
The cooling driers control system includes at least by-passing valve, the cooling driers dew point transducer being arranged on cooling driers, institute
State the adjust automatically mode that cooling driers by-passing valve uses 4~20mA of analog quantity；
The pattern of the cooling driers control system is：
When dew point transducer detects dew point rise, by-passing valve is turned down；When dew point transducer detects dew point
During reduction, by-passing valve is opened greatly, anti-stagnant ice blocks up the generation of phenomenon；The high-voltage signal of cooling driers and low-voltage signal can be transferred at the same time
Controller, controller will analyze the high pressure of collection and low-voltage signal, when refrigerant is R134a, low pressure normal value
For 0.2, high pressure normal value is 0.8~1.2；When refrigerant is R404a, low pressure normal value is 0.5, high pressure normal value for 1.5~
1.8；The current state in which of cooling driers is judged, can pass through remote control module, high in the clouds in time when occurring abnormal
Control carries out early warning and alarm.
A kind of oxygen control system processed of PSA oxygenerators of the present invention, its advantage have：
1st, the drainage system of the control system in air reservoir bottom by installing a pressure sensor and a draining
Pneumatic valve, exports installation dew point monitoring device in air reservoir, can be precisely controlled air tank according to air pressure tank and dew point
Water discharge time and pumpway every, can ensure the larger fluctuation that will not cause pressure while timely draining again, and can reduce because
Frequent start-stop and air compressor machine failure caused by frequent plus unloading；
2nd, oxygen concentration adjustment control and warning system are improved, different oxygen concentration range restraint blow off valves can be directed to
Different purging amounts, and pass through difference in low-grade location oxygen concentration by adjusting the standby pressure of oxygen flow and oxygen tank in time and conceding
Programme-control allows oxygen concentration quickly to go back up to high concentration gear；
3rd, cooling driers control system is improved, by-passing valve (by-passing valve is to manually adjust at present) is adjust automatically, can be according to dew
The suitable bypass valve opening of the corresponding adjustment of point, anti-stagnant ice block up the generation of phenomenon, and can be different cold by being used for cooling driers
Matchmaker analyzes required normal high-pressure and low-pressure.
Brief description of the drawings
Fig. 1, the structure diagram of the oxygen control system processed of existing PSA oxygenerators, wherein 1 ' is air compressor machine, 2 ' be cold dry
Machine, 3 ' be oxygenerator, and 14 ' be air tank；
Fig. 2, for a kind of structure diagram of the oxygen control system processed of PSA oxygenerators of the present invention.
Embodiment
With reference to embodiment, the invention will be further described：
Embodiment：
A kind of oxygen control system processed of PSA oxygenerators of the present invention, the PSA oxygenerators include air compressor machine 1, cooling driers 2, system
Oxygen machine 3, the oxygenerator includes babinet and pipeline assembly and adsorption tower component and control system on babinet, described
Casing top is provided with pressure gauge, display module and warning system, and the adsorption tower component includes the first adsorption tower component and the
Two adsorption tower components, the first adsorption tower component include the first upper vent and first time blow vent, second adsorption tower
Component includes the second upper vent and second time blow vent；
The oxygen control system processed of the PSA oxygenerators includes at least air tank drainage system 10 and oxygen concentration adjustment control
System and warning system 11 and cooling driers control system 12 and PLC control program 13 and network control system；
The air tank drainage system 10 includes at least pressure sensor 101 and the air storage of air reservoir bottom installation
The draining Pneumatic valve 102 of pot bottom installation and the dew point monitoring device 103 of air reservoir outlet installation；
The keying of the draining Pneumatic valve 102, water discharge time, pumpway are controlled every by PLC control program 13, the row
The water time, pumpway every setting can be accurate to Millisecond；
The pattern of the draining Pneumatic valve 102 is：
By setting pressure sensor 101 on air tank 14, when the pressure on air tank close to the shutdown of air compressor machine or
During unloading pressure, draining Pneumatic valve 102 is opened, and excessive gas is discharged, while discharge part moisture；When air tank outlet
Gas dew point raises, and controls increase water discharge time by PLC program or reduces pumpway every moisture contains in reduction air reservoir
Amount, and then dew point is reduced, to ensure the quality of source of the gas；When air reservoir pressure is reduced to setting value, pass through PLC program control
System, reduces water discharge time or increase pumpway every ensureing the pressure of air reservoir more than a stationary value；When in guarantee source of the gas
On the premise of dew point meets requirement, excessive draining causes air reservoir hypotony, and repeatedly adjustment can not still reach
In the case of balance, alert program is started by PLC program control system, starts buzzer and alarm lamp, while by remote
Process control program is alarmed using short message or other modes to apparatus manager.
The oxygen concentration adjustment control and warning system 11 include at least the oxygen concentration sensing being arranged on oxygen tank
Device and the oxygen tank pressure gauge 111 being arranged on oxygen tank and the flow instrument and alarm for being arranged at oxygen tank output terminal；
The oxygen concentration adjustment controls and warning mode is：
By gathering the oxygen concentration of oxygen concentration sensor, the pressure and present flow rate value of oxygen tank are simultaneously transmitted to
In PLC controller, PLC controller analyzes oxygen concentration, and establishes the database of oxygen density value；Database can be to oxygen
Gas concentration and time relationship progress tracing analysis, 5 gears of system offer (more than 95%, 93~95%, 93~92%, 92~
91%, 91~90%) programme-control flow, different purging amounts for different oxygen concentration range restraint blow off valves are simultaneously led to
Cross the standby pressure of adjustment oxygen flow and oxygen tank in time and concede to control by distinct program in low-grade location oxygen concentration and allow oxygen
Concentration quickly goes back up to high concentration gear；Simultaneity factor can first be issued warning signal when concentration is 91%, and pass through high in the clouds
Control system, tele-control system, cellphone control system carry out early warning prompting, remind manufacturer, Hospital Supervisor in time into
Row site inspection and real time monitoring；System can pass through the oxygen concentration after the curve of concentration reduction and the adjustment of programme-control flow
Analyzed, (system is arranged to adjust 2 sections still when adjustment control program occur and can not still improve oxygen concentration
Concentration can not be improved, for example oxygen concentration initial value is 95.2%, can not still be improved when oxygen concentration is reduced to 93~92%)
Manufacturer can be reminded, it is necessary to be maintained or overhauled by high in the clouds, prevent oxygen concentration from just notifying factory already below 90%
Family's maintenance delays hospital's oxygen situation.
The cooling driers control system 12 includes at least by-passing valve 121, the cooling driers dew point sensor being arranged on cooling driers 2
Device, the cooling driers by-passing valve use the adjust automatically mode of 4~20mA of analog quantity；
The pattern of the cooling driers control system 12 is：
When dew point transducer detects dew point rise, by-passing valve is turned down；When dew point transducer detects dew point
During reduction, by-passing valve is opened greatly, anti-stagnant ice blocks up the generation of phenomenon；The high-voltage signal of cooling driers and low-voltage signal can be transferred at the same time
Controller, controller will analyze the high pressure of collection and low-voltage signal, when refrigerant is R134a, low pressure normal value
For 0.2, high pressure normal value is 0.8~1.2；When refrigerant is R404a, low pressure normal value is 0.5, high pressure normal value for 1.5~
1.8；The current state in which of cooling driers is judged, can pass through remote control module, high in the clouds in time when occurring abnormal
Control carries out early warning and alarm.
The present invention is described in detail above, it is described above, it is only the preferred embodiments of the invention, when cannot
Limit the scope of the present invention, i.e., it is all to make equivalent changes and modifications according to the application scope, it all should still belong to covering scope of the present invention
It is interior.
Claims (6)
1. a kind of oxygen control system processed of PSA oxygenerators, the PSA oxygenerators include air compressor machine, cooling driers, oxygenerator, described
Oxygenerator includes babinet and pipeline assembly and adsorption tower component and control system on babinet, the casing top peace
Equipped with pressure gauge, display module and warning system, the adsorption tower component includes the first adsorption tower component and the second adsorption tower group
Part, the first adsorption tower component include the first upper vent and first time blow vent, and the second adsorption tower component includes the
Two upper vents and second time blow vent, it is characterised in that
The oxygen control system processed of the PSA oxygenerators includes at least air tank drainage system and oxygen concentration adjustment control and police
Reporting system and cooling driers control system and PLC control program and network control system；
The air tank drainage system includes at least pressure sensor and the installation of air reservoir bottom of air reservoir bottom installation
Draining Pneumatic valve and air reservoir outlet installation dew point monitoring device；
The keying of the draining Pneumatic valve, water discharge time, pumpway are controlled every by PLC control program, the water discharge time, row
The setting of water spacer can be accurate to Millisecond.
A kind of 2. oxygen control system processed of PSA oxygenerators as claimed in claim 1, it is characterised in that the draining Pneumatic valve
Pattern be：
By setting pressure sensor on air tank, when shutdown of the pressure on air tank close to air compressor machine or unloading pressure
When, draining Pneumatic valve is opened, and excessive gas is discharged, while discharge part moisture；When the gas dew point liter of air tank outlet
Height, by PLC program control increase water discharge time or reduce pumpway every, reduce air reservoir in moisture content, and then drop
Low dew point, to ensure the quality of source of the gas；When air reservoir pressure is reduced to setting value, controlled by PLC program, the row of reduction
Water time or increase pumpway are every ensureing the pressure of air reservoir more than a stationary value；Meet when in guarantee source of the gas dew point
On the premise of requirement, excessive draining causes air reservoir hypotony, and repeatedly adjustment is still unable to reach balance
In the case of, alert program is started by PLC program control system, starts buzzer and alarm lamp, while pass through remote control journey
Sequence is alarmed using short message or other modes to apparatus manager.
A kind of 3. oxygen control system processed of PSA oxygenerators as claimed in claim 1, it is characterised in that the oxygen concentration tune
Whole control and warning system include at least the oxygen concentration sensor being arranged on oxygen tank and the oxygen being arranged on oxygen tank
Pressure tank table and the flow instrument and alarm for being arranged at oxygen tank output terminal.
A kind of 4. oxygen control system processed of PSA oxygenerators as claimed in claim 1, it is characterised in that the oxygen concentration tune
It is whole control and warning mode be：
By gathering the oxygen concentration of oxygen concentration sensor, the pressure and present flow rate value of oxygen tank are simultaneously transmitted to PLC controls
In device processed, PLC controller analyzes oxygen concentration, and establishes the database of oxygen density value；Database can be dense to oxygen
Degree and time relationship progress tracing analysis, 5 gears of system offer (more than 95%, 93~95%, 93~92%, 92~91%,
91~90%) programme-control flow, different purging amounts for different oxygen concentration range restraint blow off valves and by and
When adjust the standby pressure of oxygen flow and oxygen tank and concede to control by distinct program in low-grade location oxygen concentration and allow oxygen concentration
Quickly go back up to high concentration gear；Simultaneity factor can first be issued warning signal when concentration is 91%, and be controlled by high in the clouds
System, tele-control system, cellphone control system carry out early warning prompting, remind manufacturer, and Hospital Supervisor is showed in time
Field checks and real time monitoring；Oxygen concentration after the curve and programme-control flow that system can be reduced by concentration adjust carries out
Analysis, (system is arranged to 2 sections of adjustment and still can not when adjustment control program occur and can not still improve oxygen concentration
Concentration is improved, for example oxygen concentration initial value is 95.2%, can not still be improved when oxygen concentration is reduced to 93~92%) it can lead to
Cross high in the clouds and remind manufacturer, it is necessary to be maintained or overhauled, prevent oxygen concentration from just notifying producer's dimension already below 90%
Repair and delay hospital's oxygen situation.
A kind of 5. oxygen control system processed of PSA oxygenerators as claimed in claim 1, it is characterised in that the cooling driers control
System includes at least by-passing valve, the cooling driers dew point transducer being arranged on cooling driers, and the cooling driers by-passing valve is using simulation
Measure the adjust automatically mode of 4~20mA.
A kind of 6. oxygen control system processed of PSA oxygenerators as claimed in claim 1, it is characterised in that the cooling driers control
The pattern of system is：
When dew point transducer detects dew point rise, by-passing valve is turned down；When dew point transducer detects dew point reduction
When, by-passing valve is opened greatly, anti-stagnant ice blocks up the generation of phenomenon；The high-voltage signal of cooling driers and low-voltage signal can be transferred to control at the same time
Device, controller will analyze the high pressure of collection and low-voltage signal, and when refrigerant is R134a, low pressure normal value is
0.2, high pressure normal value is 0.8~1.2；When refrigerant is R404a, low pressure normal value is 0.5, and high pressure normal value is 1.5~1.8；
The current state in which of cooling driers is judged, remote control module, high in the clouds control can be passed through in time when occurring abnormal
Carry out early warning and alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286783.4A CN107934918B (en) | 2017-12-07 | 2017-12-07 | Oxygen generation control system of PSA oxygenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286783.4A CN107934918B (en) | 2017-12-07 | 2017-12-07 | Oxygen generation control system of PSA oxygenerator |
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| Publication Number | Publication Date |
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| CN107934918A true CN107934918A (en) | 2018-04-20 |
| CN107934918B CN107934918B (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711286783.4A Active CN107934918B (en) | 2017-12-07 | 2017-12-07 | Oxygen generation control system of PSA oxygenerator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395693A (en) * | 2019-07-09 | 2019-11-01 | 珠海联创医疗科技有限公司 | A kind of remote controlled medical oxygen generating system |
| CN112346394A (en) * | 2020-09-27 | 2021-02-09 | 杭州博大净化设备有限公司 | Device for monitoring opening state of gas control valve in PSA (pressure swing adsorption) oxygen generator |
| CN113176754A (en) * | 2021-05-14 | 2021-07-27 | 广州埃珥赛璞医疗设备有限公司 | Remote monitoring system and method for medical molecular sieve oxygen generation equipment and computer equipment |
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