CN108458251A - Feeding mechanism containing oxygen gas mixture and intermittence low-oxygen Supply Method - Google Patents
Feeding mechanism containing oxygen gas mixture and intermittence low-oxygen Supply Method Download PDFInfo
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- CN108458251A CN108458251A CN201810584199.5A CN201810584199A CN108458251A CN 108458251 A CN108458251 A CN 108458251A CN 201810584199 A CN201810584199 A CN 201810584199A CN 108458251 A CN108458251 A CN 108458251A
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- 239000001301 oxygen Substances 0.000 title claims abstract description 358
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 358
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910001882 dioxygen Inorganic materials 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 382
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 346
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 190
- 239000007789 gas Substances 0.000 claims abstract description 51
- 239000008246 gaseous mixture Substances 0.000 claims abstract description 38
- 206010021143 Hypoxia Diseases 0.000 claims description 21
- 208000018875 hypoxemia Diseases 0.000 claims description 20
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 229910001873 dinitrogen Inorganic materials 0.000 claims 2
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 6
- 239000003814 drug Substances 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- QRSFFHRCBYCWBS-UHFFFAOYSA-N [O].[O] Chemical compound [O].[O] QRSFFHRCBYCWBS-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000011981 development test Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001146 hypoxic effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention discloses a kind of feeding mechanism containing oxygen gas mixture and intermittence low-oxygen Supply Methods, including oxygen conveying pipe, nitrogen delivery pipe, mixer and mixed gas pipeline；Pressure reducing valve, constant pressure proportioning valve, pressure transmitter, flow proportion valve and flow detector are sequentially installed on oxygen conveying pipe and nitrogen delivery pipe；The output port of mixer is connected with vacuum pump, and the output end of vacuum pump is connected with oxygen converter；The device further includes controller, and controller is separately connected pressure transmitter, flow detector, pressure transmitter, oxygen converter, pressure reducing valve, constant pressure proportioning valve and flow proportion valve.The present invention controls the flow of two gases in input mixer in the case where bleed pressure is constant, the oxygen content of detection gaseous mixture in real time, ratio in two gas input mixers of adjustment rapidly, realize automatic rapidly mixing two gas, obtain the gaseous mixture of aimed oxygen concn, precision is high so that experiment is safer, and data are more reliable.
Description
Technical field
The present invention relates to biologic test apparatuss of oxygen supply, and in particular to one kind feeding mechanism containing oxygen gas mixture and intermittence are low
Oxygen Supply Method.
Background technology
Some biologic tests need the mixed gas that oxygen and nitrogen are passed through into chamber, by changing in mixed gas
The concentration of oxygen carrys out physiological property of the biology under different oxygen environment in development test case.And existing gas supply passes through
Artificial oxygen concentration as needed calculates the flow proportional for obtaining oxygen and nitrogen, manual control input in chamber oxygen and
The oxygen concentration of the flow of nitrogen, obtained gaseous mixture is inaccurate, influences the accuracy of test data.
Invention content
To solve the above problems, the present invention proposes one kind feeding mechanism containing oxygen gas mixture and intermittence low-oxygen supplier
Method, can quick mixture of oxygen and nitrogen automatically, obtain needed for oxygen concentration mixed gas, oxygen concentration precision is high.
The specific technical solution of the present invention is as follows：On the one hand, the present invention provides a kind of feeding mechanism containing oxygen gas mixture, packet
Include the oxygen conveying pipe being connect with source of oxygen, the nitrogen delivery pipe being connect with source nitrogen, for the mixing of mixture of oxygen and nitrogen
Device and mixed gas pipeline for exporting mixed gas, oxygen conveying pipe and nitrogen delivery pipe are all connected with the input of mixer
The output port of port, mixer connects mixed gas pipeline；It is sequentially installed on oxygen conveying pipe defeated for reducing source of oxygen
The oxygen pressure reducing valve of the oxygen pressure gone out, the oxygen constant-pressure proportioning valve for adjusting oxygen pressure, for measuring oxygen pressure
Oxygen pressure transmitter, the oxygen flow proportioning valve for adjusting oxygen flow and the oxygen flow for measuring oxygen flow
Detector；The nitrogen pressure reducing valve of the nitrogen pressure exported for reducing source nitrogen is sequentially installed in nitrogen delivery pipe, for adjusting
Save the nitrogen constant pressure proportioning valve of nitrogen pressure, the nitrogen pressure transmitter for measuring nitrogen pressure, for adjusting nitrogen flow
Nitrogen flow proportioning valve and nitrogen flow detector for measuring nitrogen flow；The output port of mixer is connected with very
Sky pump, the output end of vacuum pump are connected with the oxygen converter for the oxygen content of mixed gas in detection mixer；The device
Further include controller, the input terminal of controller is separately connected oxygen pressure transmitter, oxygen flow detector, nitrogen pressure pick-up
The output end of device, nitrogen flow detector and oxygen converter, controller is separately connected oxygen pressure reducing valve, oxygen constant-pressure ratio
Valve, oxygen flow proportioning valve, nitrogen pressure reducing valve, nitrogen constant pressure proportioning valve and nitrogen flow proportioning valve.
As being further improved for apparatus of the present invention, the input terminal of oxygen conveying pipe and the input terminal of nitrogen delivery pipe are pacified
Equipped with solenoid valve, the output end of two solenoid valve connection controllers.
As being further improved for apparatus of the present invention, controller uses PLC, PLC to be connected with and is touched for what is interacted with user
Touch display screen.
Further include the babinet with chamber door, oxygen pressure reducing valve, oxygen constant-pressure ratio as being further improved for apparatus of the present invention
Example valve, oxygen pressure transmitter, oxygen flow proportioning valve, oxygen flow detector, nitrogen pressure reducing valve, nitrogen constant pressure proportioning valve,
Nitrogen pressure transmitter, nitrogen flow proportioning valve, nitrogen flow detector, oxygen converter and PLC are arranged in babinet,
Touch display screen is arranged on chamber door.
As being further improved for apparatus of the present invention, oxygen pressure transmitter and nitrogen pressure transmitter are all made of digital display pressure
Power transmitter, oxygen constant-pressure proportioning valve and nitrogen constant pressure proportioning valve are all made of the proportioning valve with number display, and oxygen converter is adopted
With digital display oxygen converter.
On the other hand, the present invention also provides a kind of intermittence low-oxygen confessions applied to the above-mentioned feeding mechanism containing oxygen gas mixture
Induction method includes the following steps：
Step 1: preparation process, including obtain target oxygen pressure value, target nitrogen pressure force value, target reduced oxygen state oxygen concentration
Value, the normal oxygen state oxygen density value of target, target keep time out, target to supply for hypoxemia state gaseous mixture time, target reduced oxygen state
Normal oxygen state gaseous mixture time and the normal oxygen state of target keep time out；
Step 2: air source voltage stabilizing step, includes being depressured respectively to the oxygen and nitrogen of source of oxygen and source nitrogen conveying, adjusts
The pressure of oxygen and nitrogen so that oxygen pressure levels off to target oxygen pressure value, and nitrogen pressure levels off to target nitrogen pressure
Value；
Step 3: hypoxemia state mixing step, includes calculating the mesh for obtaining oxygen and nitrogen according to target reduced oxygen state oxygen density value
Flow value is marked, oxygen flow and nitrogen flow are adjusted so that oxygen flow and nitrogen flow level off to the target stream being calculated
Magnitude, the oxygen content in real-time detecting mixing gas correct oxygen flow and nitrogen flow so that the oxygen in mixed gas is dense
Angle value reaches target reduced oxygen state oxygen density value；
Step 3: after target is for the hypoxemia state gaseous mixture time, stop conveying oxygen and nitrogen, is kept by target reduced oxygen state
After time out, into normal oxygen state mixing step；
Step 4: normal oxygen state mixing step, includes calculating the mesh for obtaining oxygen and nitrogen according to the normal oxygen state oxygen density value of target
Flow value is marked, oxygen flow and nitrogen flow are adjusted so that oxygen flow and nitrogen flow level off to the target stream being calculated
Magnitude, the oxygen content in real-time detecting mixing gas correct oxygen flow and nitrogen flow so that the oxygen in mixed gas is dense
Angle value reaches the normal oxygen state oxygen density value of target；
Step 5:, for after the normal oxygen state gaseous mixture time, stopping conveying oxygen and nitrogen, being waited for by the normal oxygen state of target after by target
After keeping time out, into hypoxemia state mixing step.
Beneficial effects of the present invention：Two high-pressure air sources are carried out constant pressure processing by the present invention first, in the feelings that pressure is constant
The flow that two gases in input mixer are controlled under condition, after mixer, which is added, with certain proportion in nitrogen and oxygen mixes, then it is real
When detect the oxygen content of gaseous mixture, adjust the ratio in two gas input mixers rapidly, realize it is automatic, quickly, stablize
Mixing two gas obtains the gaseous mixture of aimed oxygen concn, and the oxygen concentration precision of the gaseous mixture of acquisition is high, is medicine, life
Object experiment provides high-performance, highly reliable experimental enviroment so that experiment is safer, and data are more reliable.
Description of the drawings
Fig. 1 is the structural schematic diagram of the feeding mechanism of the invention containing oxygen gas mixture.
Fig. 2 is the flow chart of intermittence low-oxygen Supply Method of the present invention.
Specific implementation mode
In the following with reference to the drawings and specific embodiments, to hypoxemia feeding mechanism proposed by the present invention and intermittence low-oxygen controlling party
Method is further explained explanation.
The embodiment of the present invention provides a kind of feeding mechanism containing oxygen gas mixture, as shown in Figure 1, including being connect with source of oxygen
Oxygen conveying pipe 1, the nitrogen delivery pipe 2 being connect with source nitrogen, for the mixer 3 of mixture of oxygen and nitrogen and for exporting
The mixed gas pipeline 4 of mixed gas, oxygen conveying pipe 1 and nitrogen delivery pipe 2 are all connected with the input port of mixer 3, mixing
The output port of device 3 connects mixed gas pipeline 4；The oxygen exported for reducing source of oxygen is sequentially installed on oxygen conveying pipe 1
The oxygen pressure reducing valve 12 of atmospheric pressure, the oxygen constant-pressure proportioning valve 13 for adjusting oxygen pressure, the oxygen for measuring oxygen pressure
Air pressure power transmitter 14, the oxygen flow proportioning valve 15 for adjusting oxygen flow and the oxygen stream for measuring oxygen flow
Amount detector 16；Be sequentially installed in nitrogen delivery pipe 2 nitrogen pressure exported for reducing source nitrogen nitrogen pressure reducing valve 22,
For adjusting the nitrogen constant pressure proportioning valve 23 of nitrogen pressure, the nitrogen pressure transmitter 24 for measuring nitrogen pressure, for adjusting
Save the nitrogen flow proportioning valve 25 of nitrogen flow and the nitrogen flow detector 26 for measuring nitrogen flow；Mixer 3
Output port is connected with vacuum pump 32, and the output end of vacuum pump 32 is connected with the oxygen content for mixed gas in detection mixer
Oxygen converter 33；The device further includes controller 5, and the input terminal of controller 5 is separately connected oxygen pressure transmitter 14, oxygen
Air-flow amount detector 16, nitrogen pressure transmitter 24, nitrogen flow detector 26 and oxygen converter 33, controller 5 it is defeated
Outlet is separately connected oxygen pressure reducing valve 12, oxygen constant-pressure proportioning valve 13, oxygen flow proportioning valve 15, nitrogen pressure reducing valve 22, nitrogen
Constant pressure proportioning valve 23 and nitrogen flow proportioning valve 25.
When the feeding mechanism containing oxygen gas mixture proposed using the embodiment of the present invention, the input terminal of oxygen conveying pipe is connected
The input terminal of oxygen bottle, nitrogen delivery pipe connects nitrogen cylinder, the output end joint test case of mixed gas pipeline.Nitrogen steel
Bottle and oxygen bottle are all high-pressure air sources, and controller controls oxygen pressure reducing valve and nitrogen pressure reducing valve and carried out to oxygen and nitrogen respectively
Decompression, oxygen pressure transmitters sense oxygen pressure are simultaneously sent to controller, and controller controls oxygen constant-pressure according to oxygen pressure
The aperture of valve makes oxygen pressure maintain target oxygen pressure value or so, and equally, nitrogen pressure transmitters sense nitrogen pressure is simultaneously
It is sent to controller, controller controls the aperture of nitrogen constant pressure valve according to nitrogen pressure, nitrogen pressure is made to maintain target nitrogen
Pressure value or so；Oxygen flow detector detects the oxygen flow in input mixer and is sent to controller, nitrogen flow inspection
Device to be surveyed to detect the nitrogen flow in input mixer and be sent to controller, vacuum pump extracts the mixed gas in mixer, by
Oxygen content in oxygen converter detection mixed gas is simultaneously sent to controller, and controller is according to aimed oxygen concn value, defeated
The oxygen content for entering mixed gas in the oxygen flow of mixer, the nitrogen flow of input mixer and mixer, controls respectively
The aperture of oxygen flow proportioning valve and nitrogen flow proportioning valve, by input mixer oxygen and nitrogen mix after be intended to mesh
Oxygen density value is marked, is exported from mixer delivery pipe to chamber after obtaining stable mixed gas.
The feeding mechanism containing oxygen gas mixture that the embodiment of the present invention proposes first carries out two high-pressure air sources at constant pressure
Reason controls the flow of two gases in input mixer in the case where pressure is constant, when nitrogen and oxygen are added with certain proportion
After mixer mixing, then the oxygen content of detection gaseous mixture in real time, the ratio in two gas input mixers is adjusted rapidly, is realized
Automatically, mixing two gas quickly, stable, obtains the gaseous mixture of aimed oxygen concn, the oxygen concentration of the gaseous mixture of acquisition
Precision is high, and high-performance, highly reliable experimental enviroment are provided for medicine, biologic test so that experiment is safer, and data are more reliable.
In a preferred embodiment of the invention, the input terminal of oxygen conveying pipe and the input terminal of nitrogen delivery pipe are mounted on electricity
The break-make of magnet valve, the output end of two solenoid valve connection controllers, controller control solenoid valve carrys out the conveying of two air sources of start and stop,
When needing to supply gaseous mixture, controller controls two solenoid valves and opens, and oxygen and nitrogen are conveyed into mixer, defeated after mixing
Go out, when that need not supply gaseous mixture, controller controls two solenoid valves and closes, and stops conveying oxygen and nitrogen into mixer
Gas.
In a preferred embodiment of the invention, controller uses PLC, the touch that PLC is connected with for being interacted with user to show
Target oxygen pressure value, target nitrogen pressure force value and aimed oxygen concn value etc. can be arranged in screen, user by touch display screen, also
The oxygen content of the flow and gaseous mixture of oxygen and nitrogen during supplying, setting and watcher can be shown by touch display screen
Just.Specifically, PLC is using letter victory PLC, since the AD/DA port numbers that PLC is carried are limited, PLC in the preferred embodiment of the present invention
It is also associated with AD/DA expansion modules.
In a preferred embodiment of the invention, further include the babinet with chamber door, oxygen pressure reducing valve, oxygen constant-pressure proportioning valve,
Oxygen pressure transmitter, oxygen flow proportioning valve, oxygen flow detector, nitrogen pressure reducing valve, nitrogen constant pressure proportioning valve, nitrogen pressure
Power transmitter, nitrogen flow proportioning valve, nitrogen flow detector, oxygen converter and PLC are arranged in babinet, are touched aobvious
Display screen is arranged on chamber door, the output of the input terminal of oxygen conveying pipe, the input terminal of nitrogen delivery pipe and mixed gas pipeline
End is stretched out outside babinet.Device is mounted in the babinet with chamber door, babinet is used as a carrier first so that whole device is removed
Fortune is convenient, is secondly used as a protection body, can dust and moisture, protect device, user does not open chamber door also can be by chamber door
Touch display screen is arranged and observation relevant parameter.
In a preferred embodiment of the invention, oxygen pressure transmitter and nitrogen pressure transmitter are all made of digital display pressure inverting
Device, oxygen constant-pressure proportioning valve and nitrogen constant pressure proportioning valve are all made of the constant pressure proportioning valve with number display, and oxygen converter uses
Digital display oxygen converter.Corresponding detected value is directly displayed by above-mentioned device, controller is without transferring to touch pressure data
Display screen shows, can less controller data processing work amount.
The embodiment of the present invention also provides a kind of intermittence low-oxygen Supply Method, is applied to above-mentioned oxygen-containing mixing feeding mechanism
In, as shown in Fig. 2, including the following steps：
Step 1: preparation process, including obtain target oxygen pressure value, target nitrogen pressure force value, target reduced oxygen state oxygen concentration
Value, the normal oxygen state oxygen density value of target, target keep time out, target to supply for hypoxemia state gaseous mixture time, target reduced oxygen state
Normal oxygen state gaseous mixture time and the normal oxygen state of target keep time out；
Step 2: air source voltage stabilizing step, includes being depressured respectively to the oxygen and nitrogen of source of oxygen and source nitrogen conveying, adjusts
The pressure of oxygen and nitrogen so that oxygen pressure levels off to target oxygen pressure value, and nitrogen pressure levels off to target nitrogen pressure
Value；
Step 3: hypoxemia state mixing step, includes calculating the mesh for obtaining oxygen and nitrogen according to target reduced oxygen state oxygen density value
Flow value is marked, oxygen flow and nitrogen flow are adjusted so that oxygen flow and nitrogen flow level off to the target stream being calculated
Magnitude, the oxygen content in real-time detecting mixing gas correct oxygen flow and nitrogen flow so that the oxygen in mixed gas is dense
Angle value reaches target reduced oxygen state oxygen density value；
Step 3: after target is for the hypoxemia state gaseous mixture time, stop conveying oxygen and nitrogen, is kept by target reduced oxygen state
After time out, into normal oxygen state mixing step；
Step 4: normal oxygen state mixing step, includes calculating the mesh for obtaining oxygen and nitrogen according to the normal oxygen state oxygen density value of target
Flow value is marked, oxygen flow and nitrogen flow are adjusted so that oxygen flow and nitrogen flow level off to the target stream being calculated
Magnitude, the oxygen content in real-time detecting mixing gas correct oxygen flow and nitrogen flow so that the oxygen in mixed gas is dense
Angle value reaches the normal oxygen state oxygen density value of target；
Step 5:, for after the normal oxygen state gaseous mixture time, stopping conveying oxygen and nitrogen, being waited for by the normal oxygen state of target after by target
After keeping time out, into hypoxemia state mixing step.
Two high-pressure air sources are carried out constant pressure processing by intermittence low-oxygen Supply Method provided in an embodiment of the present invention first,
The flow that two gases in input mixer are controlled in the case where pressure is constant, when nitrogen and oxygen are added with certain proportion and are mixed
After device mixing, then the real-time oxygen content for detecting gaseous mixture, the ratio in two gas input mixers is adjusted rapidly, is realized certainly
Mixing two gas dynamic, quickly, stable, is capable of providing the gaseous mixture of required oxygen concentration, i.e. hypoxemia state gaseous mixture and normal oxygen
State gaseous mixture, and switched in hypoxemia state and normal oxygen state, intermittence low-oxygen gaseous mixture is provided, without artificially switching over, is obtained
The oxygen concentration precision of the gaseous mixture obtained is high, and high-performance, highly reliable experimental enviroment are provided for medicine, biologic test so that experiment
Safer, data are more reliable.
The Supply Method that the embodiment of the present invention is proposed is applied in the feeding mechanism that my preferred embodiment of the present invention proposes,
The input terminal of the oxygen conveying pipe of the device and the input terminal of nitrogen delivery pipe are mounted on solenoid valve, two solenoid valve connection controls
The output end of device processed, and controller uses PLC, PLC to be connected with the touch display screen for being interacted with user, specifically include following
Step：
Step 1: preparation process, including touch display screen obtain target oxygen pressure value, target nitrogen pressure force value, target reduced oxygen
When the normal oxygen state oxygen density value of state oxygen density value, target, target keep pause for hypoxemia state gaseous mixture time, target reduced oxygen state
Between, target keeps time out for normal oxygen state gaseous mixture time and the normal oxygen state of target, and above-mentioned data is sent to controller；
Step 2: air source voltage stabilizing step, including controller controls oxygen pressure reducing valve and the outlet pressure of nitrogen pressure reducing valve is respectively
Target oxygen pressure value and target nitrogen pressure force value, oxygen converter detection oxygen pressure are simultaneously sent to controller, nitrogen pick-up
Device detects nitrogen pressure and is sent to controller, and controller controls oxygen constant-pressure proportioning valve and nitrogen respectively using proportional controlling means
The aperture of gas constant pressure proportioning valve so that oxygen pressure value and nitrogen pressure value stabilization are in target oxygen pressure value and target nitrogen pressure
Force value；
Step 2: hypoxemia state mixing step, including controller calculate according to target reduced oxygen state oxygen density value and obtain oxygen and nitrogen
The target flow value of gas controls the aperture of oxygen flow proportioning valve and nitrogen flow proportioning valve respectively, while oxygen flow detects
Device and nitrogen flow detector detect oxygen flow and nitrogen flow respectively, and are sent to controller, and controller is according to real-time inspection
The oxygen flow and nitrogen flow of survey adjust the aperture of oxygen flow proportioning valve and nitrogen flow proportioning valve so that oxygen exports
Flow and nitrogen output flow tend to the target flow value being calculated, after being mixed in oxygen and nitrogen input mixer, very
Sky pump extracts the mixed gas in mixer in real time, and the oxygen content of detection is sent to controller, controller by oxygen converter
Adjust oxygen flow proportioning valve and nitrogen flow proportioning valve so that the oxygen density value in mixer reaches target reduced oxygen state oxygen
Ratio value；
Step 3: after target is for the hypoxemia state gaseous mixture time, controller closes oxygen solenoid valve and nitrogen magnetic valve, passes through
After target reduced oxygen state keeps time out, into normal oxygen state mixing step；
Step 4: normal oxygen state mixing step, including controller calculate according to the normal oxygen state oxygen density value of target and obtain oxygen and nitrogen
The target flow value of gas controls the aperture of oxygen flow proportioning valve and nitrogen flow proportioning valve respectively, while oxygen flow detects
Device and nitrogen flow detector detect oxygen flow and nitrogen flow respectively, and are sent to controller, and controller is according to real-time inspection
The oxygen flow and nitrogen flow of survey adjust the aperture of oxygen flow proportioning valve and nitrogen flow proportioning valve so that oxygen exports
Flow and nitrogen output flow tend to the target flow value being calculated, after being mixed in oxygen and nitrogen input mixer, very
Sky pump extracts the mixed gas in mixer in real time, and the oxygen content of detection is sent to controller, controller by oxygen converter
Adjust oxygen flow proportioning valve and nitrogen flow proportioning valve so that the oxygen density value in mixer reaches the normal oxygen state oxygen of target
Ratio value；
Step 5: passing through for after the normal oxygen state gaseous mixture time, controller closes oxygen solenoid valve and nitrogen magnetic valve by target
After the normal oxygen state of target keeps time out, into hypoxemia state mixing step.
Using intermittence low-oxygen Supply Method provided in an embodiment of the present invention, if setting target reduced oxygen state oxygen concentration is
5%, the normal oxygen state oxygen concentration of target is 20.9%, and target is 35S for the hypoxemia state gaseous mixture time, when target reduced oxygen state keeps pause
Between be 10S, target is 35S for the normal oxygen state gaseous mixture time, and it is 10S that the normal oxygen state of target, which keeps time out, you can is realized per small
The environmental effect of 40 hypoxic events of Shi Fasheng.
The basic principles, main features and advantages of the invention have been shown and described above.Those skilled in the art should
Understand, the present invention do not limited by above-mentioned specific embodiment, the description in above-mentioned specific embodiment and specification be intended merely into
One step illustrates the principle of the present invention, without departing from the spirit and scope of the present invention, the present invention also have various change and
It improves, these changes and improvements all fall within the protetion scope of the claimed invention.The scope of protection of present invention is wanted by right
Ask book and its equivalent thereof.
Claims (6)
1. a kind of feeding mechanism containing oxygen gas mixture, which is characterized in that include the oxygen conveying pipe and nitrogen being connect with source of oxygen
The nitrogen delivery pipe of source connection is conveyed for the mixer of mixture of oxygen and nitrogen and the gaseous mixture for exporting mixed gas
Pipe, oxygen conveying pipe and nitrogen delivery pipe are all connected with the input port of mixer, and the output port connection gaseous mixture of mixer is defeated
Send pipe；The oxygen pressure reducing valve of the oxygen pressure conveyed for reducing source of oxygen is sequentially installed on oxygen conveying pipe, for adjusting
The oxygen constant-pressure proportioning valve of oxygen pressure, the oxygen pressure transmitter for measuring oxygen pressure, for adjusting oxygen flow
Oxygen flow proportioning valve and oxygen flow detector for measuring oxygen flow；It is sequentially installed with and is used in nitrogen delivery pipe
Reduce the nitrogen pressure reducing valve of nitrogen pressure of source nitrogen conveying, the nitrogen constant pressure proportioning valve for adjusting nitrogen pressure, for surveying
Measure the nitrogen pressure transmitter of nitrogen pressure, the nitrogen flow proportioning valve for adjusting nitrogen flow and for measuring nitrogen stream
The nitrogen flow detector of amount；The output port of mixer is connected with vacuum pump, and the output end of vacuum pump is connected with for detecting
The oxygen converter of the oxygen content of mixed gas in mixer；The device further includes controller, and the input terminal of controller connects respectively
Oxygen pressure transmitter, oxygen flow detector, nitrogen pressure transmitter, nitrogen flow detector and oxygen converter are connect,
The output end of controller is separately connected oxygen pressure reducing valve, oxygen constant-pressure proportioning valve, oxygen flow proportioning valve, nitrogen pressure reducing valve, nitrogen
Gas constant pressure proportioning valve and nitrogen flow proportioning valve.
2. feeding mechanism containing oxygen gas mixture according to claim 1, which is characterized in that the input terminal of oxygen conveying pipe and
The input terminal of nitrogen delivery pipe is mounted on solenoid valve, the output end of two solenoid valve connection controllers.
3. feeding mechanism containing oxygen gas mixture according to claim 1 or 2, which is characterized in that institute's controller uses PLC,
PLC is connected with the touch display screen for being interacted with user.
4. feeding mechanism containing oxygen gas mixture according to claim 3, which is characterized in that further include the case with chamber door
Body, oxygen pressure reducing valve, oxygen constant-pressure proportioning valve, oxygen pressure transmitter, oxygen flow proportioning valve, oxygen flow detector, nitrogen
Gas pressure reducing valve, nitrogen constant pressure proportioning valve, nitrogen pressure transmitter, nitrogen flow proportioning valve, nitrogen flow detector, oxygen pick-up
Device and PLC are arranged in babinet, and touch display screen is arranged on chamber door.
5. feeding mechanism containing oxygen gas mixture according to claim 1, which is characterized in that oxygen pressure transmitter and nitrogen
Pressure transmitter is all made of digital pressure transducer, and oxygen constant-pressure proportioning valve and nitrogen constant pressure proportioning valve are all made of band number display
Proportioning valve, oxygen converter use digital display oxygen converter.
6. a kind of intermittence low-oxygen Supply Method is applied in feeding mechanism containing oxygen gas mixture described in claim 1, including
Following steps：
Step 1: preparation process, including obtain target oxygen pressure value, target nitrogen pressure force value, target reduced oxygen state oxygen concentration
Value, the normal oxygen state oxygen density value of target, target keep time out, target to supply for hypoxemia state gaseous mixture time, target reduced oxygen state
Normal oxygen state gaseous mixture time and the normal oxygen state of target keep time out；
Step 2: air source voltage stabilizing step, includes being depressured respectively to the oxygen and nitrogen of source of oxygen and source nitrogen conveying, adjusts
The pressure of oxygen and nitrogen so that oxygen pressure levels off to target oxygen pressure value, and nitrogen pressure levels off to target nitrogen pressure
Value；
Step 3: hypoxemia state mixing step, includes calculating the mesh for obtaining oxygen and nitrogen according to target reduced oxygen state oxygen density value
Flow value is marked, oxygen flow and nitrogen flow are adjusted so that oxygen flow and nitrogen flow level off to the target stream being calculated
Magnitude, the oxygen content in real-time detecting mixing gas correct oxygen flow and nitrogen flow so that the oxygen in mixed gas is dense
Angle value reaches target reduced oxygen state oxygen density value；
Step 3: after target is for the hypoxemia state gaseous mixture time, stop conveying oxygen and nitrogen, is kept by target reduced oxygen state
After time out, into normal oxygen state mixing step；
Step 4: normal oxygen state mixing step, includes calculating the mesh for obtaining oxygen and nitrogen according to the normal oxygen state oxygen density value of target
Flow value is marked, oxygen flow and nitrogen flow are adjusted so that oxygen flow and nitrogen flow level off to the target stream being calculated
Magnitude, the oxygen content in real-time detecting mixing gas correct oxygen flow and nitrogen flow so that the oxygen in mixed gas is dense
Angle value reaches the normal oxygen state oxygen density value of target；
Step 5: by target for after the normal oxygen state gaseous mixture time, stopping conveying oxygen and nitrogen, kept by the normal oxygen state of target
After time out, into hypoxemia state mixing step.
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| CN201810584199.5A CN108458251A (en) | 2018-06-08 | 2018-06-08 | Feeding mechanism containing oxygen gas mixture and intermittence low-oxygen Supply Method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810584199.5A CN108458251A (en) | 2018-06-08 | 2018-06-08 | Feeding mechanism containing oxygen gas mixture and intermittence low-oxygen Supply Method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469825A (en) * | 2018-12-19 | 2019-03-15 | 中石化中原石油工程设计有限公司 | A kind of long distance pipeline natural gas hydrogenation device and method |
| CN110410672A (en) * | 2019-07-05 | 2019-11-05 | 中国科学院空间应用工程与技术中心 | A kind of nitrogen supply (NS) method and device |
| CN113813803A (en) * | 2021-06-08 | 2021-12-21 | 福尼斯(南京)表面工程技术有限公司 | High-precision multi-component gas proportioning method for surfacing |
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