CN110442157A - Compress control method in hypobaric chamber and cabin - Google Patents
Compress control method in hypobaric chamber and cabin Download PDFInfo
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- CN110442157A CN110442157A CN201810413841.3A CN201810413841A CN110442157A CN 110442157 A CN110442157 A CN 110442157A CN 201810413841 A CN201810413841 A CN 201810413841A CN 110442157 A CN110442157 A CN 110442157A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008859 change Effects 0.000 claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 238000005086 pumping Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 abstract description 7
- 230000000630 rising effect Effects 0.000 abstract description 3
- 108010066057 cabin-1 Proteins 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000009194 climbing Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000030279 gene silencing Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000002612 cardiopulmonary effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G10/00—Treatment rooms or enclosures for medical purposes
- A61G10/02—Treatment rooms or enclosures for medical purposes with artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms
- A61G10/023—Rooms for the treatment of patients at over- or under-pressure or at a variable pressure
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The present invention relates to hypobaric chamber technical fields, and in particular to compress control method in a kind of hypobaric chamber and its cabin.The hypobaric chamber includes cabin, hatch door, exhaust pipe, air-extractor, pressure test device and controller, and pressure test device is connect with controller, detects pressure change in cabin；Exhaust pipe includes main exhaust tube, the first exhaust tube and auxiliary exhaust tube；Auxiliary exhaust tube and the first exhaust tube are connected in parallel on main exhaust tube, and the other end is opened wide to air out of my cabin；Auxiliary exhaust tube switch valve is connected on auxiliary exhaust tube, auxiliary exhaust tube switch valve is connect with controller；Hypobaric chamber includes the frequency converter connecting with air-extractor, and frequency converter is connect with controller, controls start and stop and the output power of air-extractor.Compress control method includes pressure decline control method and rising control method in the hypobaric chamber cabin.Above-mentioned technical proposal provided by the invention can effectively adjust the pressure change in hypobaric chamber cabin, and pressure change is more steady.
Description
Technical field
The present invention relates to hypobaric chamber technical field, more particularly to it is a kind of can effectively in adjusting cabin the hypobaric chamber of pressure and
Compress control method in cabin.
Background technique
Hypobaric chamber is a kind of device for being capable of forming hypobaric hypoxia environment, causes the low pressure in cabin to lack by air-extractor
Oxygen condition, and can air pressure in adjusting cabin as required, simulate different high altitude environments, tester lacks different altitude height
Oxygen endurance can allow it in low altitude area height experience high altitude environment in particular for mountain-climbing fan and soldier.
With the raising of scientific and technological level and the transformation of research direction, researcher's discovery, hypobaric chamber can not only simulate high sea
Environment is pulled out, while also there are many benefits to human body commonly using hypobaric chamber, such as improves the oxygen carrying function of vascular tissue, is mentioned
The civilian value of high cardio-pulmonary function etc., hypobaric chamber has a extensive future, miniaturization, it is cost effective be hypobaric chamber civil nature trend.It is existing
There is hypobaric chamber also to need to continuously improve in terms of air pressure adjustment in cabin and perfect.
Summary of the invention
The purpose of the present invention at least that provide it is a kind of can effectively adjust in hypobaric chamber cabin the hypobaric chamber of pressure change and
Compress control method in its cabin.
In order to achieve the above objects and other related objects, an embodiment of the invention provides a kind of hypobaric chamber, including
Cabin, hatch door, exhaust pipe, air-extractor, pressure test device and controller, the pressure test device and the controller
Connection detects pressure change in cabin；The exhaust pipe includes main exhaust tube, the first exhaust tube and auxiliary exhaust tube；Described
One exhaust tube one end is connected in the cabin, and for being evacuated from inside to outside from cabin, one end of the other end and the main exhaust tube connects
It connects, the other end of the main exhaust tube is connect with the air-extractor；Described auxiliary exhaust tube one end simultaneously with the main pumping
Pipe is connected with first exhaust tube, and the other end is opened wide to air out of my cabin；Auxiliary exhaust tube is connected on the auxiliary exhaust tube
Switch valve, the auxiliary exhaust tube switch valve are connect with the controller；The hypobaric chamber includes connecting with the air-extractor
Frequency converter, the frequency converter connect with the controller, controls start and stop and the output power of the air-extractor.
In one embodiment, the air-extractor is vacuum pump.
In one embodiment, the switch valve is solenoid valve.
In one embodiment, the pressure test device is pressure sensor.
In one embodiment, the present invention provides pressure decline control method in a kind of cabin of aforementioned any hypobaric chamber,
It include: air-extractor to being evacuated out of my cabin, the auxiliary exhaust tube switch valve is in close state；It is detected by pressure test device
Pressure change in cabin；When detecting that rate of pressure change is higher than setting value, by controller by frequency converter, air-extractor is controlled
Reduce output power；When detecting rate of pressure change lower than setting value, by controller by frequency converter, air-extractor is controlled
Increase output power；It is still higher than when the output power of the air-extractor by Frequency Converter Control reaches lower limit rate of pressure change
When setting value, the auxiliary exhaust tube switch valve is opened.
In one embodiment, it after opening the auxiliary exhaust tube switch valve, is set when by the pumping of Frequency Converter Control
Standby output power reaches the upper limit and rate of pressure change closes the auxiliary exhaust tube switch valve when being still below setting value.
In one embodiment, the setting value includes upper limit value and lower limit value, and the setting value that is higher than is higher than setting
The upper limit value of definite value, the setting value that is lower than is the lower limit value lower than setting value.
In one embodiment, the present invention provides pressure rising control method in a kind of cabin of aforementioned any hypobaric chamber,
Wherein the hypobaric chamber further includes the first air inlet pipe and the second air inlet pipe, and first air inlet pipe is normally opened air inlet pipe, and described the
Two air inlet pipe are provided with the air inlet pipe switch valve connecting with the controller, this method comprises: the air inlet pipe switch valve is in
Opening state, the auxiliary exhaust tube switch valve are in close state；Reduce output power by Frequency Converter Control air-extractor；
Pressure change in cabin is detected by pressure test device；When the output power of the air-extractor by Frequency Converter Control reaches lower limit
And rate of pressure change opens the auxiliary exhaust tube switch valve when being still below setting value.
The above-mentioned technical proposal that embodiment of the present invention provides, can effectively adjust the pressure change in hypobaric chamber cabin, and
Pressure change is more steady.
Detailed description of the invention
Fig. 1 is shown as the structural schematic diagram in one embodiment of the invention mesolow cabin.
Component label instructions
1 cabin
10 hatch doors
11 automatic pressure relief valves
21 first air inlet pipe
212 air cleaning units
213 silencing means
22 second air inlet pipe
221 solenoid valves
222 air cleaning units
223 silencing means
23 third air inlet pipe
231 solenoid valves
24 first exhaust tubes
241 threeways
242 filter devices
25 auxiliary exhaust tubes
251 solenoid valves
252 filter devices
26 main exhaust tubes
261 non-return valves
3 vacuum pumps
31 frequency converters
Scram button in 311 cabins
312 scram buttons out of my cabin
4 master boards
Operating console in 411 cabins
412 operating consoles out of my cabin
Display screen in 421 cabins
422 display screens out of my cabin
5 first pressure sensors
51 second pressure sensors
6 lighting systems
7 negative oxygen ion generators
8 bunchs of cables
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It should be clear that structure, ratio, size etc. depicted in this specification attached drawing, only to cooperate disclosed in specification
Content be not intended to limit the invention enforceable qualifications, therefore not so that those skilled in the art understands and reads
Has technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing institute of the present invention
Under the effect of capable of generating and the purpose that can reach, the range that disclosed technology contents can be covered should all be still fallen in
It is interior.Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, also only just
In being illustrated for narration, rather than to limit the scope of the invention, relativeness is altered or modified, without substantive change
Under more technology contents, when being also considered as the enforceable scope of the present invention.
Hypobaric chamber provided by the invention includes cabin, hatch door, air inlet pipeline, exhaust pipe, air-extractor, air pressure detection dress
It sets and controller, is at least partly provided with the flow control valves such as switch valve or flow control valve on air inlet pipeline and exhaust pipe,
To air inlet and/or the control of pumping.
Fig. 1 shows a specific embodiment of hypobaric chamber of the present invention.The hypobaric chamber includes cabin 1, is provided with cabin in cabin 1
Door 10.
Be provided with air inlet pipe in cabin 1, be three in the present embodiment, be respectively the first air inlet pipe 21, the second air inlet pipe 22,
Third air inlet pipe 23, wherein the first air inlet pipe 21 is normally opened air inlet pipe.It will be appreciated by those skilled in the art that so-called air inlet pipe is not
It is confined to the tubular form with certain length, is also possible to air inlet form, is more convenient for solenoid valve, ratio using tubular form
The connection of the devices such as valve, air cleaning unit, silencing means is installed.As shown in Figure 1, in the present embodiment, the first air inlet pipe 21
One end is connected with air cleaning unit 212, the other end, i.e., the cabin inside joint noise reduction device 213 of the one end that is connected with cabin 1；The
One end of two air inlet pipe 22 is connect with solenoid valve 221, air cleaning unit 222, the other end connect the cabin of one end with cabin 1
Inside joint noise reduction device 223；23 one end of third air inlet pipe is connected with solenoid valve 231.
It is provided with the first exhaust tube 24 in cabin 1, is connected on the inside of the cabin that the first exhaust tube 24 connect one end with cabin 1
Filter device 242.The other end of first exhaust tube 24 is interconnected by threeway 241 and main exhaust tube 26, auxiliary exhaust tube 25.
Main 26 other end of exhaust tube is connected with vacuum pump 3, can also be connected with non-return valve 261 therebetween.Assist 25 other end of exhaust tube
It is opened wide to air out of my cabin, which is connected with solenoid valve 251, can also be connected with filter device 252.3 electricity of frequency converter 31 and vacuum pump
Connection, for controlling start and stop and the output power of vacuum pump 3.
The present invention is that the auxiliary exhaust tube that hypobaric chamber provides can both play the role of pumping adjusting, also has and mends into cabin
The function of gas.In pumping process, by opening solenoid valve 251, make that exhaust tube 25 is assisted to be communicated with the atmosphere, vacuum pump 3 is simultaneously
Be evacuated by the first exhaust tube 24 and auxiliary exhaust tube 25 so that the tolerance of the first exhaust tube 24 extraction is reduced, thus reduce from
The rate that cabin is evacuated from inside to outside.And in the case where vacuum pump 3 shuts down, open solenoid valve 251, auxiliary exhaust tube 25 and big
Gas connection, then can play the role of through the first tonifying Qi into cabin of exhaust tube 24.It, can also be by electromagnetism when hold capacity is smaller
Valve 251 replaces with the flow control valves such as proportioning valve, sucking rate to be adjusted instead of frequency converter 31.
Controller is specially the master board 4 that is arranged in cabin 1 in the present embodiment, is additionally provided in cabin and master board
Display screen 421 in operating console 411 and cabin in the cabins of 4 connections.For that can also be arranged simultaneously and connect with master board 4 convenient for operation
The operating console out of my cabin 412 that connects and out of my cabin display screen 422.Although master board 4 is arranged in cabin in the present embodiment, in reality
In the application of border, master board 4 can be placed in cabin or out of my cabin according to instrument size, application scenarios selection.
First pressure sensor 5 and second pressure sensor 51 are provided in cabin 1 can only pass through when hypobaric chamber works
One pressure sensor is measured in real time air pressure in cabin, can also pass through gas in the two pressure sensor real-time detection cabins
Pressure according to the average value of two pressure sensor detected values as actually detected value, or also can use second pressure sensing
Device 51 carries out verification processing to pressure sensor 5: master board 4 acquires pressure sensor 5 and second pressure sensor 51 simultaneously
Electric signal be compared, when data error is in given threshold, then determine that pressure sensor 5 is working properly, data are credible, if
It is standby to work normally；When data error is more than given threshold, then report an error maintenance.When master board 4 is located in cabin, second pressure
Sensor 51 can be integrated in master board 4.
Lighting system 6, negative oxygen ion generator 7 are additionally provided in the present embodiment, in cabin.It is arranged in cabin 1 to connect
The bunch of cables 8 of interior external circuit, master board 4 by bunch of cables 8 respectively with solenoid valve 221, solenoid valve 231, solenoid valve 251, become
Frequency device 31, console 411, console 412, display screen 421, display screen 422, pressure sensor 5, second pressure sensor 51,
Lighting system 6, negative oxygen ion generator 7 are electrically connected.
For safety, automatic pressure relief valve 11 is set in cabin 1, when cabin internal and external pressure difference is greater than determining for automatic pressure relief valve 11
After filling pressure, automatic pressure relief valve 11 is automatically turned on, and fresh air is supplemented into cabin, ensures load person's safety.Automatic pressure relief valve is installed
11 be that in the limiting case, to the physical security safeguard procedures of the cabin person of containing, the dress pressure of determining of automatic pressure relief valve 11 should be according to cabin
The practical height above sea level setting that body 1 is installed, to ensure that partial pressure of oxygen is in secure threshold under highest work load situation in cabin.
In order to can quickly eliminate safe hidden trouble when encountering special circumstances, the present invention is set respectively in cabin and out of my cabin
Emergency stop switch is set, is scram button 311 and scram button 312, frequency converter 31 are had to go to the toilet with cabin out of my cabin in cabin respectively in the present embodiment
Stop button 311, out of my cabin 312 three of scram button pass through circuit be connected in series.In cabin or out of my cabin personnel can by scram button,
Quick manual stops the operating of vacuum pump 3, avoids special circumstances from continuing to develop, such as when personnel do not feel like oneself in cabin.In
It is not used in the embodiment of Frequency Converter Control vacuum pump, then it can be by scram button 311, out of my cabin scram button in vacuum pump 3 and cabin
312 threes are connected in series by circuit.
Hypobaric chamber provided by the invention includes the decline of air pressure in cabin, steady, rising, recovery etc. four in use
Different operating modes can be used using object and demand for different in root phase, and different working modes can thus four
A root phase is composed according to certain rule.
Wherein, by taking embodiment illustrated in fig. 1 as an example, the air pressure decline control mode of air pressure decline stage is as follows in cabin:
The stage, frequency converter 31 controls vacuum pump 3 and opens, to being evacuated out of my cabin, while only by the first air inlet pipe 21 to cabin
Interior air inlet, i.e. solenoid valve 221, solenoid valve 231 and solenoid valve 251 are in closed state.It will be appreciated by those skilled in the art that
First air inlet pipe, 21 air inflow answer it is relatively small, to realize the decline of air pressure.During dropping under pneumatic pressure, pass through pressure sensing
Device 5 detects pressure change in cabin, when detecting that rate of pressure change is more than setting value, adjusts frequency converter by master board 4
31, the output power of vacuum pump 3 is reduced, reduces sucking rate until rate of pressure change meets sets requirement in cabin, and works as detection
When being lower than setting value to rate of pressure change, frequency converter 31 is adjusted by master board 4, improves the output power of vacuum pump 3, is increased
Add sucking rate until rate of pressure change meets sets requirement in cabin.Herein, setting value can be a point value, also may include
Upper limit value and lower limit value.
That there may be regulating powers is limited for frequency converter 31, is not enough to the case where reaching requirement, then in combination with to solenoid valve 221
Open and close control carry out rate of pressure change adjusting.For example, master board 4 is examined according to pressure sensor 5 in pumping process
Pressure change in the cabin measured adjusts frequency converter 31, when the output power of the vacuum pump 3 controlled by frequency converter 31 reaches lower limit
And rate of pressure change is when being still higher than setting value, then opens solenoid valve 221, it is defeated when the vacuum pump 3 controlled by frequency converter 31
Power reaches the upper limit and when rate of pressure change is still below setting value out, then closes solenoid valve 221.Alternatively, in pumping process,
First opens solenoid valve 221 makes the second air inlet pipe 22 and the first air inlet into cabin simultaneously of air inlet pipe 21, then by master board 4
Pressure change in the cabin detected according to pressure sensor 5 adjusts frequency converter 31, when the vacuum pump 3 controlled by frequency converter 31
Output power reaches the upper limit and rate of pressure change is then closed solenoid valve 221, controlled when by frequency converter 31 when being still below setting value
The output power of the vacuum pump 3 of system reaches lower limit and when rate of pressure change is still higher than setting value, then reopens solenoid valve
221.Also the adjusting of rate of pressure change is carried out in combination with the open and close control to solenoid valve 251.For example, in pumping process, it is main
Pressure change in the cabin that control panel 4 is detected according to pressure sensor 5 adjusts frequency converter 31, when what is controlled by frequency converter 31
The output power of vacuum pump 3 reaches lower limit and rate of pressure change when being still higher than setting value, then opens solenoid valve 251, leads to simultaneously
The output power that frequency converter 31 adjusts vacuum pump 3 is crossed, when the output power of the vacuum pump 3 controlled by frequency converter 31 reaches the upper limit
And rate of pressure change then closes solenoid valve 251 when being still below setting value.
When hold capacity is smaller, solenoid valve 221 can be replaced with the flow control valves such as proportioning valve, by the second air inlet
The control of 22 air inflow of pipe carries out the adjusting of rate of pressure change.In this case it can cancel frequency converter 31.For example, being evacuated
In the process, pressure change in the cabin that master board 4 is detected according to pressure sensor 5 controls and is arranged in the second air inlet pipe 22
Ratio valve regulation air inflow, when the air inflow of the ratio valve regulation reaches the upper limit and rate of pressure change is still higher than setting value,
Then further opens solenoid valve 251.
By taking embodiment illustrated in fig. 1 as an example, the air pressure of air pressure plateau maintains control mode as follows in cabin:
Vacuum pump 3 is first controlled by frequency converter 31 and keeps stable output power, stablizes sucking rate, is then turned on solenoid valve
221, solenoid valve 231 and solenoid valve 251 are in close state.Pressure sensor 5 detects air pressure change in cabin, if air pressure is opened in cabin
Begin to rise the output power for then increasing vacuum pump 3 by control frequency converter 31 by master board 4, until stable gas pressure is being set in cabin
In definite value；Conversely, reducing the output of vacuum pump 3 by control frequency converter 31 by master board 4 if air pressure in cabin is begun to decline
Power, until stable gas pressure is in setting value in cabin.When the output power of the vacuum pump 3 controlled by frequency converter 31 reaches lower limit
And air pressure is when being still below setting value, then opens solenoid valve 251 carries out auxiliary pumping and adjusts.Herein, setting value can be a point
Value, also may include upper limit value and lower limit value.
By taking embodiment illustrated in fig. 1 as an example, it is as follows to rise control mode for the air pressure of air pressure ascent stage in cabin:
Method 1: the control method of vacuum pump 3 is not closed.Solenoid valve 221 is in the open state, solenoid valve 231 and solenoid valve
251 are in close state, and the output power of vacuum pump 3 is reduced by frequency converter 31, reduce sucking rate, pass through pressure sensor 5
Air pressure in cabin is detected, when to reach lower limit air pressure climbing speed still low for the output power of the vacuum pump 3 controlled by frequency converter 31
When setting value, opens solenoid valve 251, while 3 output power of vacuum pump is adjusted by frequency converter 31, until air pressure rises in cabin
Rate reaches setting value.
Method 2: the control method of vacuum pump 3 is closed.The operating for stopping vacuum pump 3, at solenoid valve 231 and solenoid valve 251
In closed state.Opens solenoid valve 221, pressure sensor 5 detect air pressure in cabin, if air pressure climbing speed is greater than setting in cabin
Value, then close solenoid valve 221；If air pressure climbing speed is less than setting value in cabin, further opens solenoid valve 251, utilization is auxiliary
Exhaust tube 25 is helped to carry out tonifying Qi.Herein, setting value can be a point value, also may include upper limit value and lower limit value.
By taking embodiment illustrated in fig. 1 as an example, the air pressure balance control mode of air pressure Restoration stage is as follows in cabin:
Stop the operating of vacuum pump 3, opens whole solenoid valves, air passes through the first air inlet pipe 21, the second air inlet pipe out of my cabin
22, third air inlet pipe 23,24 tonifying Qi into cabin simultaneously of the first exhaust tube, so that the air pressure inside and outside cabin is rapidly achieved equilibrium state,
Especially in case of emergency it is used for the Fast-Balance of air pressure.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of hypobaric chamber, including cabin, hatch door, exhaust pipe, air-extractor, pressure test device and controller, the gas
Pressure detection device is connect with the controller, detects pressure change in cabin, it is characterised in that:
The exhaust pipe includes main exhaust tube, the first exhaust tube and auxiliary exhaust tube；
First exhaust tube one end is connected in the cabin, for being evacuated from inside to outside from cabin, the other end and the main pumping
One end of pipe connects, and the other end of the main exhaust tube is connect with the air-extractor；
Described auxiliary exhaust tube one end is connect with the main exhaust tube and first exhaust tube simultaneously, and the other end is to air out of my cabin
It opens wide；
Auxiliary exhaust tube switch valve is connected on the auxiliary exhaust tube, the auxiliary exhaust tube switch valve and the controller connect
It connects；
The hypobaric chamber includes the frequency converter connecting with the air-extractor, and the frequency converter is connect with the controller, control
The start and stop of the air-extractor and output power.
2. hypobaric chamber according to claim 1, it is characterised in that:
The air-extractor is vacuum pump.
3. hypobaric chamber according to claim 1, it is characterised in that:
The switch valve is solenoid valve.
4. hypobaric chamber according to claim 1, it is characterised in that:
The pressure test device is pressure sensor.
5. hypobaric chamber according to claim 1 to 4, it is characterised in that:
The hypobaric chamber include the first air inlet pipe and the second air inlet pipe, first air inlet pipe be normally opened air inlet pipe, described second
Air inlet pipe is provided with the air inlet pipe switch valve connecting with the controller.
6. pressure declines control method in a kind of cabin of -5 any hypobaric chambers according to claim 1, it is characterised in that:
To being evacuated out of my cabin, the auxiliary exhaust tube switch valve is in close state air-extractor；
Pressure change in cabin is detected by pressure test device；
When detecting that rate of pressure change is higher than setting value, by controller by frequency converter, control air-extractor reduces output
Power；
When detecting rate of pressure change lower than setting value, by controller by frequency converter, control air-extractor increases output
Power；
When the output power of the air-extractor by Frequency Converter Control, which reaches lower limit rate of pressure change, is still higher than setting value,
Open the auxiliary exhaust tube switch valve.
7. pressure declines control method in cabin according to claim 6, it is characterised in that:
After opening the auxiliary exhaust tube switch valve, when the output power of the air-extractor by Frequency Converter Control reaches the upper limit
When rate of pressure change is still below setting value, the auxiliary exhaust tube switch valve is closed.
8. pressure declines control method in cabin according to claim 6 or 7, it is characterised in that:
The setting value includes upper limit value and lower limit value, and the setting value that is higher than is the upper limit value higher than setting value, described to be lower than
Setting value is the lower limit value lower than setting value.
9. pressure rises control method in a kind of cabin of hypobaric chamber according to claim 5, it is characterised in that:
The air inlet pipe switch valve is in the open state, and the auxiliary exhaust tube switch valve is in close state；
Reduce output power by Frequency Converter Control air-extractor；
Pressure change in cabin is detected by pressure test device；
When the output power of the air-extractor by Frequency Converter Control, which reaches lower limit rate of pressure change, is still below setting value,
Open the auxiliary exhaust tube switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413841.3A CN110442157A (en) | 2018-05-03 | 2018-05-03 | Compress control method in hypobaric chamber and cabin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413841.3A CN110442157A (en) | 2018-05-03 | 2018-05-03 | Compress control method in hypobaric chamber and cabin |
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| CN110442157A true CN110442157A (en) | 2019-11-12 |
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| CN201810413841.3A Pending CN110442157A (en) | 2018-05-03 | 2018-05-03 | Compress control method in hypobaric chamber and cabin |
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| CN107917824A (en) * | 2017-10-24 | 2018-04-17 | 天津大学 | A kind of low pressure in minienvironment cabin adjusts the method for sampling and device |
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