CN107572482A - A kind of self elevation adaption oxygen generation system and method for producing oxygen through - Google Patents
A kind of self elevation adaption oxygen generation system and method for producing oxygen through Download PDFInfo
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- CN107572482A CN107572482A CN201710910906.0A CN201710910906A CN107572482A CN 107572482 A CN107572482 A CN 107572482A CN 201710910906 A CN201710910906 A CN 201710910906A CN 107572482 A CN107572482 A CN 107572482A
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Abstract
The invention discloses a kind of self elevation adaption oxygen generation system and method for producing oxygen through, system includes air compression unit, oxygen absorbing unit processed, control unit, pressure sensing cell, wherein air compression unit supplies for oxygen absorbing unit processed, control unit is used to control air compression unit and oxygen absorbing unit processed, the pressure sensor of the pressure sensing cell is installed on oxygen absorbing unit processed, the operating pressure of detection oxygen absorbing unit processed in real time, after air compression unit is opened, pressure sensing cell real-time detecting system pressure value, control unit starts timing simultaneously, when system pressure value reaches setting value, control unit stops timing and calculates the air compression unit working time, control unit calculates height above sea level according to the air compression unit working time, and absorption and the denitrogen time of oxygen absorbing unit processed are controlled according to height above sea level.The present invention using parts such as altitude sensor, frequency converters, does not greatly save cost, ensures that the concentration of oxygen processed reaches more than 90%.
Description
Technical field
The invention belongs to medical instruments field, and in particular to a kind of self elevation adaption oxygen generation system and method for producing oxygen through.
Background technology
In general oxygen generation system can produce more than 90% oxygen in region of no relief use, but because of highlands air
Thin, air forces down, and causes oxygen generation system to decline in uplift plateau operation irregularity or production oxygen ability.Recent domestic is developed extensively
The oxygenerators of various plateau types, some provide source of the gas by using powerful air compressor and make plateau type oxygenerator；
Some detects height above sea level by increasing pressure test device or plateau oxygen concentration detecting apparatus, at the same by increase frequency converter or
The number of compressor improves system dynamic；The portable oxygenerator scheme having is improved using direct current generator by changing motor speed
System dynamic is so as to improving oxygen concentration.
But this plateau type is defined as to provide the oxygen generating plant of source of the gas by using powerful air compressor
Oxygenerator, it is impossible in plains region normal work, cause the use range of product to narrow, limited by use environment.And pass through
Increase pressure test device or plateau oxygen concentration detecting apparatus detection height above sea level, while by increasing frequency converter or compressor
Number improves system dynamic, considerably increases design and producing cost, while also increases the volume and weight of machine, increases
The energy consumption of equipment.Using the portable oxygenerator scheme of direct current generator, define that the oxygen flow of output will not be very big, may not
Meets the needs of oxygen therapy.
The content of the invention
The technical problem to be solved in the invention, which is to provide one kind, can adapt to operating air pressure environment automatically, and high concentration is made
The self elevation adaption oxygen generation system and method for producing oxygen through of oxygen.
To solve the above problems, the technical solution used in the present invention is：
A kind of self elevation adaption oxygen generation system, including the inspection of air compression unit, oxygen absorbing unit processed, control unit, pressure
Unit is surveyed, wherein air enters oxygen absorbing unit oxygen processed after air compression unit compresses, and control unit is used to control air
The working condition of compression unit and oxygen absorbing unit processed, the pressure sensor of the pressure sensing cell are installed on oxygen absorption processed
The operating pressure of the output end of unit, in real time detection oxygen absorbing unit processed, the output end connection control unit of pressure sensing cell
Input, after air compression unit is opened, pressure sensing cell real-time detecting system pressure value, while control unit starts
Timing, when system pressure value reaches setting value, control unit stops timing and calculates the air compression unit working time, controls
Unit calculates height above sea level according to the air compression unit working time, and according to height above sea level control the absorption (supply) of oxygen absorbing unit processed with
And denitrogen (exhaust) time, produce high-concentration oxygen.
Further, in addition to air accumulator and flow concentration detecting unit, wherein air accumulator import and oxygen processed absorption are single
Member is connected, and flow concentration detecting unit, the connection control of flow concentration detecting unit output end are installed in reservoir outlet pipeline
Unit input processed.
Further, in addition to it is used for the inlet air filtration unit filtered to air, for being carried out to compressed air
The heat-sink unit of cooling and the noise-reduction unit that noise-reduction is carried out to whole oxygen generation system.
A kind of method for producing oxygen through of self elevation adaption oxygen generation system, this method are based on physics omnibus control system technology, passed through
Air is compressed by air compression unit, utilizes absorption of the molecular sieve of oxygen absorbing unit processed to oxygen and nitrogen in air
The difference of ability comes oxygen and nitrogen separation, so as to obtain the oxygen of high concentration；Whole making oxygen is entered by control unit
Row control, the making oxygen comprise the following steps：
1) judge the atmospheric pressure of equipment working environment, that is, determine height above sea level；
Control unit control air compression unit extracts air from external environment and is compressed first, and by compressed air
It is delivered to oxygen absorbing unit processed；Control unit starts timing, and real-time detecting system pressure value simultaneously, i.e., oxygen absorbing unit processed
Operating pressure, compared with setup pressure value, stop timing when system pressure value reaches setup pressure value, calculate timing
Time, the atmospheric pressure of equipment working environment, i.e. height above sea level are determined according to the time of timing；
2) atmospheric pressure measured according to step 1) determines oxygen absorbing unit control parameter processed, controls oxygen absorbing unit oxygen processed
Process；
Different altitude height corresponding to the atmospheric pressure that step 1) is measured carries out segment processing, and different height above sea level sections is corresponding
Different oxygen absorbing unit control parameters processed；The control parameter mainly includes service life and denitrogen time, and height above sea level is higher, supplies
Gas time and denitrogen time are longer, and control unit controls oxygen absorbing unit processed to carry out oxygen processed according to corresponding control parameter, are made
High-concentration oxygen.
Further, it is further comprising the steps of：
The oxygen concentration of oxygen made from step 2) is detected, when the oxygen concentration for detecting obtained is less than oxygenerator
During standard value, further oxygen absorbing unit control parameter processed is adjusted, adjustment mode is on the basis of existing control parameter
It is upper further to increase service life and evacuation time.
Wherein, further increase service life and the mode of evacuation time is：System is not up in system working pressure to satisfy
During with operating pressure, control service life and evacuation time respectively with small size time stepping increase, increase per stepping a step and
Oxygen concentration and system pressure value detection are carried out after 2min, if oxygen concentration not up to requires and pressure is not less than system specialization, after
It is continuous to increase service life and evacuation time in a stepping manner, if system pressure value reached equipment permission maximum or
Oxygen concentration reaches requirement, then stops the regulation to service life and evacuation time.Service life stepping amplitude is 0.1s, during exhaust
Between stepping amplitude be 0.085s.
It is using beneficial effect caused by above-mentioned technical proposal：The present invention reaches setting by calculating system pressure value
The time of pressure value judges the external pressure of equipment local environment and height above sea level, and by change oxygen absorbing unit processed supply and
The denitrogen time improves adaptability of the system to different altitude height oxygen, simple to operate, easy to control, and does not use
The parts such as specific altitude sensor, frequency converter, greatly save cost, optimize design, and product on plateau, put down
Former region can be used, and can ensure that the concentration of oxygen processed reaches more than 90%.
Brief description of the drawings
Fig. 1 is oxygenerator modular construction schematic diagram of the present invention；
Fig. 2 is the atmospheric pressure decision flow chart of present device working environment；
Embodiment
Invention is described in further detail below in conjunction with the accompanying drawings：
The present invention is the oxygen generation system and method for producing oxygen through of a kind of self elevation adaption.Oxygen generation system of the present invention passes through to system pressure
The detection of power (operating pressure of oxygen absorbing unit processed), judge the ambient pressure and atmospheric density situation of equipment work, and then
Supply, exhaust (denitrogen) state of oxygen generation system are controlled, is realized to the adaptive of different altitude height oxygen.This oxygen generation system and
Method for producing oxygen through can not only carry out oxygen processed in different altitude height, and can ensure that the concentration of oxygen processed reaches more than 90%, be
Unite simple in construction, it is easy to control.
As shown in figure 1, a kind of self elevation adaption oxygen generation system, including inlet air filtration unit, air compression unit, radiating list
Member, oxygen absorbing unit, control unit, pressure sensing cell, air accumulator, flow concentration detecting unit and noise-reduction list processed
Member, wherein inlet air filtration unit are used to filter air, and heat-sink unit is used to cool to compressed air, noise-reduction
Unit is used to carry out whole oxygen generation system noise-reduction, and oxygen absorbing unit processed is used for circulation oxygen, including one absorption of control
Tower absorption nitrogen oxygen producing and another adsorption tower discharge nitrogen, clean sifting bed, air accumulator be used for make oxygen enrichment and
Storage, control unit are used for sensed system parameter (such as system pressure, oxygen concentration, flow) and control air compression unit and system
Oxygen absorbing unit works；Wherein air accumulator import is connected with oxygen absorbing unit processed, and it is dense that flow oxygen is installed in reservoir outlet pipeline
Spend detection unit, flow concentration detecting unit output end connection control unit input；Air compresses through air compression unit
Enter oxygen absorbing unit oxygen processed afterwards, control unit is used for the work shape for controlling air compression unit and oxygen absorbing unit processed
State, the pressure sensor of the pressure sensing cell are installed on oxygen absorbing unit output end processed, in real time detection oxygen absorbing unit processed
Operating pressure, pressure sensing cell output end connection control unit input, after air compression unit is opened, pressure
Detection unit real-time detecting system pressure value, while control unit starts timing, when system pressure value reaches setting value, control
Unit stops timing and calculates the air compression unit working time, and control unit calculates sea according to the air compression unit working time
Pull out, and absorption and the denitrogen time of oxygen absorbing unit processed are controlled according to height above sea level, produce high-concentration oxygen.
For user convenience, biofilter and humidification bottle are additionally provided with, the oxygen in air accumulator is dense through flow oxygen successively
Spend detection unit, biofilter, humidification bottle supply user (patient).Wherein biofilter is used for the filtering of bacterium, molecule
The filtering of dust is sieved, humidification bottle is used for oxygen humidification so as to for users to use.
Based on the method for producing oxygen through of above-mentioned oxygen generation system, this method is based on physics omnibus control system technology, passes through air pressure
Air is compressed by contracting unit, using the molecular sieve of oxygen absorbing unit processed to the oxygen in air and the adsorption capacity of nitrogen
Difference comes oxygen and nitrogen separation, so as to obtain the oxygen of high concentration；Whole making oxygen is controlled by control unit,
The making oxygen comprises the following steps：
1) judge the atmospheric pressure of equipment working environment, that is, determine height above sea level, its flow is as shown in Figure 2
Control unit control air compression unit extracts air from external environment and is compressed first, and by compressed air
It is delivered to oxygen absorbing unit processed；Control unit starts timing, and real-time detecting system pressure value simultaneously, i.e., oxygen absorbing unit processed
Operating pressure, compared with setup pressure value, stop timing when system pressure value reaches setup pressure value, calculate timing
Time, the atmospheric pressure of equipment working environment, i.e. height above sea level are determined according to the time of timing；
2) atmospheric pressure measured according to step 1) determines oxygen absorbing unit control parameter processed, controls absorbing unit oxygen preparation
Different altitude height corresponding to the atmospheric pressure that step 1) is measured carries out segment processing, and different height above sea level sections is corresponding
Different oxygen absorbing unit control parameters processed；The control parameter mainly includes service life and denitrogen time, and height above sea level is higher, supplies
Gas time and denitrogen time are longer, and control unit controls oxygen absorbing unit processed to carry out oxygen processed according to corresponding control parameter, are made
High-concentration oxygen.
In order to ensure standard that obtained oxygen concentration reaches more than 90%, the present invention is also carried out by oxygen concentration detection
Feedback control, the control parameter of oxygen absorbing unit processed is adjusted, specifically includes following steps：
The oxygen concentration of oxygen made from step 2) is detected, when the oxygen concentration for detecting obtained is less than oxygenerator
During standard value, further oxygen absorbing unit control parameter processed is adjusted, adjustment mode is on the basis of existing control parameter
It is upper further to increase service life and evacuation time.
Oxygen workflow explanation processed：
The present invention is after oxygen generation system is opened, and oxygen generation system first carries out atmospheric pressure identification, and (height above sea level of working environment is sentenced
It is disconnected).This identifies that work is completed by control unit and pressure sensing cell, and control unit is in control air compression unit work
While start timing, and real-time detecting system pressure value (oxygen absorbing unit operating pressure processed).To ensure the system pressure of detection
Force value is accurate enough, and the sample frequency of pressure value can not be too slow, and its sample frequency, which must assure that, can effectively identify that pressure becomes
Change, meanwhile, for the uniformity for reducing sampling error, increasing product, sampled pressure value need to pass through the disposal of gentle filter.When control is single
When member judges that the system pressure value after processing reaches setup pressure value, the time of air compression unit work is calculated, no
The same working time corresponds to different external pressure force value (corresponding to different height above sea level).
The atmospheric pressure of equipment working environment in the present invention, the i.e. approximation to function of height above sea level and timing time are following passes
System：
Wherein, H is height above sea level, and T is timing time, and a, b are the coefficient value of function.The coefficient value of above-mentioned function is to pass through
The experiment of simulated high altitude environment or demarcation test on the spot obtain the functional relation that data determine.The coefficient value of above-mentioned function is by air
The joint effect of compression unit capacity and oxygen absorbing unit adsorption capacity processed and volume of gas storage tank, therefore when air compression is single
When first gas supply capacity is different, oxygen absorbing unit adsorption capacity difference processed designs volume difference with air accumulator, the coefficient of above-mentioned function
Value all can be different.
The present invention, be to oxygen absorbing unit processed into before normal oxygen process processed after atmospheric pressure identification is completed
Running parameter (mainly service life and evacuation time) is adjusted, to ensure the air total amount entered in oxygen absorbing unit processed
The oxygen of respective amount is produced enough, and ensures that operating pressure is suitable for the operating pressure of interior molecules sieve absorption nitrogen.It is specific to adjust
Adjusting method is as follows：
Control unit is adopted according to the external pressure force value (height above sea level angle value) obtained in above-mentioned atmospheric pressure identification step
Segment processing is carried out to different height above sea levels with software program, different height above sea level sections corresponds to different control parameters, and control is single
Which height above sea level section is member be located at using software checking book method identification equipment first, then carries out assignment to control parameter according to height above sea level section
Adjustment.Control parameter includes service life and the denitrogen time of oxygen absorbing unit processed, so as to ensure that pressure is suitable, and is provided
Air capacity produce corresponding oxygen enough, nitrogen can be fully parsed during denitrogen.
Assuming that the oxygen generation system of the present invention sets operating altitude as 0-4000m, the relation of this height above sea level and atmospheric pressure is herein
In the range of be approximately linear relationship, height above sea level can be divided using every increase 800m as a height above sea level section.Sentence in measure
During disconnected outside atmospheric pressure, different altitude height, the time T that system pressure reaches preset value space-time air pressure contracting cell operation can not
Together.Assuming that equipment is in height above sea level 300m, height above sea level 3000m and tri- height above sea level work of height above sea level 3800m, then control unit detects
Time can be respectively T1, T2 and T3 (T1<T2<T3), control unit can provide different according to built-in software program respectively
Oxygen absorbing unit control parameter processed (referring to following table)：Service life G1, G2 and G3 and exhaust (denitrogen) time P1, P2 and P3.
Wherein T1, T2 and T3 relation are T1<T2<T3, the oxygen generation system can control oxygen absorbing unit parameter processed：Service life relation is
G1<G2<G3, denitrogen time relationship are P1<P2<P3.
For the system of the present invention, one group of suitable data is as follows：
| Height above sea level (unit：Rice) | 300 | 3000 | 3800 |
| Detection time (unit：Second) | 8.0 | 12.5 | 17.4 |
| Service life (unit：Second) | 5.6 | 8.4 | 11.0 |
| Evacuation time (unit：Second) | 5 | 7 | 9 |
According to above-mentioned data, in the oxygen generation system equally configured, height above sea level and the functional relation of timing time are obtained
For：
The oxygen absorbing unit processed of the present invention is by two identical adsorption tower groups into when adsorption tower supply thereto
When, the adsorption tower absorption nitrogen oxygen producing, while another adsorption tower carries out regenerating molecular sieve of the denitrogen so as to inside.There is electricity
Magnet valve is connected to air inlet and exhaust (denitrogen) place of two adsorption towers, and control unit is by changing the time of magnetic valve break-make to system
The intake and exhaust time of oxygen absorbing unit is accurately controlled.
Flow concentration detecting unit is used to detect the flow and concentration value of obtained oxygen, when detecting obtained oxygen
During concentration still relatively low (being less than 90%), further the parameter of oxygen absorbing unit processed can be carried out according to current system pressure value
Adjustment, with oxygen effect most preferably processed.Adjustment mode is further increasing supply and evacuation time, further increases service life
Mode with evacuation time is：System saturation operating pressure (equipment is not up in system working pressure (current system pressure value)
The maximum of permission) when, service life and evacuation time are controlled respectively with small size time stepping increase, increase by a step simultaneously per stepping
Oxygen concentration and system pressure value detection are carried out after 2min, if oxygen concentration not up to requires and pressure is not less than system specialization,
Continue to increase service life and evacuation time in a stepping manner, if system pressure value reached equipment permission maximum or
Person's oxygen concentration reaches requirement, then stops the regulation to service life and evacuation time.And service life stepping amplitude is 0.1s,
Evacuation time stepping amplitude is 0.085s.
For example, oxygenerator exports oxygen with 3L/min flow, if system working pressure distance reaches the work of system saturation
When pressure also has larger surplus, service life can control to increase with 0.1s steppings increase, evacuation time with 0.085s steppings, often
2min is judged according to the oxygen concentration and system pressure parameter value that detect, if oxygen concentration not up to requires and pressure does not surpass
System saturation operating pressure is crossed, continues to increase service life and evacuation time in a stepping manner, if pressure has reached maximum, is stopped
Only to the regulation of service life and evacuation time, if oxygen concentration reaches requirement, also stop the tune to service life and evacuation time
Section.
Claims (6)
1. a kind of self elevation adaption oxygen generation system, including air compression unit, oxygen absorbing unit processed, control unit, pressure detecting
Unit, wherein air enter oxygen absorbing unit oxygen processed after air compression unit compresses, and control unit is used to control air pressure
The working condition of contracting unit and oxygen absorbing unit processed, it is characterised in that：The pressure sensor installation of the pressure sensing cell
In the operating pressure of the output end of oxygen absorbing unit processed, in real time detection oxygen absorbing unit processed, the output end of pressure sensing cell connects
The input of control unit is connect, after air compression unit is opened, pressure sensing cell real-time detecting system pressure value, same to time control
Unit processed starts timing, and when system pressure value reaches setting value, control unit stops timing and calculates air compression unit work
Make the time, control unit calculates height above sea level according to the air compression unit working time, and controls oxygen absorbing unit processed according to height above sea level
Absorption and denitrogen time, produce high-concentration oxygen.
2. self elevation adaption oxygen generation system according to claim 1, it is characterised in that：Also include air accumulator and flow oxygen is dense
Detection unit is spent, wherein air accumulator import is connected with oxygen absorbing unit processed, and the inspection of flow oxygen concentration is installed in reservoir outlet pipeline
Survey unit, flow concentration detecting unit output end connection control unit input.
3. self elevation adaption oxygen generation system according to claim 2, it is characterised in that：Also include being used to carry out air
The inlet air filtration unit of filter, disappear for the heat-sink unit to be cooled to compressed air and to whole oxygen generation system progress noise reduction
The noise-reduction unit of sound.
4. a kind of method for producing oxygen through of self elevation adaption oxygen generation system, this method is based on physics omnibus control system technology, passes through sky
Air is compressed by gas compression unit, using the molecular sieve of oxygen absorbing unit processed to the oxygen and the energy of adsorption of nitrogen in air
The difference of power comes oxygen and nitrogen separation, so as to obtain the oxygen of high concentration；Whole making oxygen is carried out by control unit
Control, it is characterised in that the making oxygen comprises the following steps：
1) judge the atmospheric pressure of equipment working environment, that is, determine height above sea level；
Control unit control air compression unit extracts air from external environment and is compressed first, and compressed air is conveyed
To oxygen absorbing unit processed；Control unit starts timing, and real-time detecting system pressure value, i.e., the work of oxygen absorbing unit processed simultaneously
Pressure, compared with setup pressure value, stop timing when system pressure value reaches setup pressure value, calculate timing when
Between, the atmospheric pressure of equipment working environment, i.e. height above sea level are determined according to the time of timing；
2) atmospheric pressure measured according to step 1) determines oxygen absorbing unit control parameter processed, controls absorbing unit oxygen preparation；
Different altitude height corresponding to the atmospheric pressure that step 1) is measured carries out segment processing, and different height above sea level sections is corresponding different
Oxygen absorbing unit control parameter processed；The control parameter mainly includes service life and denitrogen time, and height above sea level is higher, during supply
Between and the denitrogen time it is longer, control unit controls oxygen absorbing unit processed to carry out oxygen processed according to corresponding control parameter, is made highly concentrated
Spend oxygen.
A kind of 5. method for producing oxygen through of self elevation adaption oxygen generation system according to claim 4, it is characterised in that also include with
Lower step：
The oxygen concentration of oxygen made from step 2) is detected, when the oxygen concentration for detecting obtained is less than oxygenerator standard
During value, further oxygen absorbing unit control parameter processed is adjusted, adjustment mode is entered on the basis of existing control parameter
One step increases service life and evacuation time.
A kind of 6. method for producing oxygen through of self elevation adaption oxygen generation system according to claim 5, it is characterised in that：Further plus
The mode of big service life and evacuation time is：When system working pressure is not up to system saturation operating pressure, control supply
Time and evacuation time increase by a step per stepping and oxygen concentration and system are carried out after 2min respectively with small size time stepping increase
Pressure value detects, if oxygen concentration not up to requires and pressure is not less than system specialization, continues increase supply in a stepping manner
Time and evacuation time, if system pressure value has reached the maximum of equipment permission or oxygen concentration reaches requirement, stop
Regulation to service life and evacuation time.
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| CN112607710A (en) * | 2020-12-30 | 2021-04-06 | 青岛精安医疗科技有限责任公司 | Oxygen generation system and control method thereof |
| CN112607710B (en) * | 2020-12-30 | 2022-10-28 | 青岛精安医疗科技有限责任公司 | Oxygen generation system and control method thereof |
| CN112675659A (en) * | 2020-12-31 | 2021-04-20 | 青岛精安医疗科技有限责任公司 | Oxygen generation system and molecular sieve health state monitoring method thereof |
| CN112815466A (en) * | 2021-01-27 | 2021-05-18 | 中铁第一勘察设计院集团有限公司 | Construction method of plateau railway oxygen regulation system |
| CN113415238A (en) * | 2021-06-15 | 2021-09-21 | 宁波越凡医疗科技有限公司 | Vehicle-mounted carsickness-prevention electrical stimulation system and method |
| CN113998673A (en) * | 2021-10-27 | 2022-02-01 | 北京科技大学 | Portable oxygen generator |
| CN113998673B (en) * | 2021-10-27 | 2023-03-07 | 北京科技大学 | Portable oxygen generator |
| CN114028668B (en) * | 2021-10-28 | 2023-06-09 | 中国船舶重工集团公司第七一八研究所 | Pulse gas quantity control method of pulse type oxygen making equipment |
| CN114028668A (en) * | 2021-10-28 | 2022-02-11 | 中国船舶重工集团公司第七一八研究所 | Control method of pulse gas volume of pulse type oxygen generation equipment |
| CN116603362A (en) * | 2023-05-19 | 2023-08-18 | 湖南比扬医疗科技有限公司 | Oxygenerator control system and oxygenerator |
| CN117970970A (en) * | 2024-03-15 | 2024-05-03 | 中山清匠电器科技有限公司 | Vpsa mode-based oxygen-making oil-free compressor and control system thereof |
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