CN106441727B - Space Vehicle System device for detecting leak rate and detection method based on gas chromatography - Google Patents
Space Vehicle System device for detecting leak rate and detection method based on gas chromatography Download PDFInfo
- Publication number
- CN106441727B CN106441727B CN201510497819.8A CN201510497819A CN106441727B CN 106441727 B CN106441727 B CN 106441727B CN 201510497819 A CN201510497819 A CN 201510497819A CN 106441727 B CN106441727 B CN 106441727B
- Authority
- CN
- China
- Prior art keywords
- gas
- collection vessel
- spacecraft
- probe
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The measuring device of the invention discloses a kind of Space Vehicle System leak rate based on gas chromatography, the device mainly includes high-purity carrier gas gas source, gas chromatograph, aspiration pump, blower, collection vessel, sampling line and calibrating gas gas sources, several blowers are uniformly arranged on each corner of collection vessel, gas chromatograph is connected to calibrating gas gas source, high-purity carrier gas gas source respectively, and is connected to by aspiration pump with the multichannel sampling line through collection vessel wall.This detection method has can be with the multiple sealing systems of parallel detection, the features such as expanding probe gas range of choice, setting-out operation is not needed during leak detection, can directly test atmospheric environment.
Description
Technical field
The invention belongs to spacecraft leak detection technology fields, in particular it relates to which spacecraft is during general assembly
It is special with having on propulsion system, environmental control system, heat control system and spacecraft to probe gas after the filling of launching site propellant
It is required that sealing system leak detection, be a kind of novel spacecraft leak detection and measurement method.
Background technique
Gas entrained by spacecraft and liquid have high pressure, inflammable, explosive property mostly and have certain toxicity, once
Leakage can constitute a threat to the life security of people at ground, can explode when leaking serious, cause serious quality accident.
Leakage behind spacecraft heaven can make that dosage is promoted to reduce, and shorten spacecraft service life；Corona discharge caused by leaking simultaneously,
Background increase etc. can cause serious interference to experiment and communication equipment；Manned spacecraft can be seriously threatened in case of leakage
The life security of spacefarer directly results in aerial mission and is unable to complete, and ends in failure or even the miserable curtain of fatal crass.Therefore
Spacecraft needs the leakage index of repeated detection sealing system in general assembly development stage and launching site stage, to meet the requirements.
Currently, helium mass spectrometer leak detector and corresponding Helium Leak Test are most common leak detections in spacecraft leak detection work
Equipment and leak hunting method, helium mass spectrometer leak detector is small with equipment volume, movement is flexible, detection sensitivity is high, and the testing time is fast, fixed
Property quantitatively be easy the advantages that, so it is widely used in the every field of leak detection, but the disadvantage is that helium can only be used
As probe gas, other probe gas can not be hunted leak using the equipment for gas or hydrogen.With the development of space technology and
Spacecraft task amount increases, it is desirable that hunting leak, the working time is short, detection sensitivity is high (DFH-5 satellite platform), multiple sealings
System is detected (921 platforms etc.) simultaneously, detects leakage (electric propulsion satellite platform) of xenon etc., so that existing helium mass spectrum is examined
Leakage instrument and Helium Leak Test are unable to satisfy the new demand of spacecraft leak detection.In order to meet model mission requirements, therefore
It is necessary to find a kind of spacecraft leakage detection method for being able to detect a variety of probe gas, meet spacecraft mission requirements.
Summary of the invention
Object of the present invention is to solve the problems, such as that spacecraft multiple sealing systems during general assembly can not carry out parallel leak detection
With solve spacecraft propulsion system fuel and refrigerant leakage can not test problems.
The sealing performance needs of spacecraft sealing system during general assembly take multiple measurements, and the sealing system of spacecraft
Quantity of uniting is more, and the conventional antivacuum accumulative of helium mass spectrum can only once detect a system, increase spacecraft
Time reduces working efficiency.Simultaneously as spacecraft development occurs directly filling non-helium working medium, such as thermal control inside part sealing system
Ethane, propylene or ammonia are filled in the pipeline of system, and perfluoro triethylamine etc. is filled in the pipeline of environmental control system；Launching site electric propulsion system adds
Infusing post fuel is xenon etc., this all makes conventional leak detection method be unable to satisfy the new detection demand of spacecraft.
A kind of new space flight can be devised with the principle of qualitative and quantitative analysis gas with various ingredient using gas chromatographic technique
Device leakage detection method.This method can be with multiple sealing systems of parallel detection spacecraft, can be to a variety of probe gas or boat
Its device working medium and fuel carry out quantitative detection.
To achieve the goals above, present invention employs following technical solutions:
The measuring device of Space Vehicle System leak rate based on gas chromatography mainly includes high-purity carrier gas gas source, gas phase color
Spectrometer, aspiration pump, blower, collection vessel, sampling line and calibrating gas gas source, several blowers are uniformly arranged on collection vessel
Each corner, gas chromatograph is connected to calibrating gas gas source, high-purity carrier gas gas source respectively, and by aspiration pump with through receiving
Collect the multichannel sampling line connection of chamber wall.
Wherein, calibrating gas gas source is configured to the gas source of one or more probe gas of known quantity concentration.
The method hunted leak using the above-mentioned Space Vehicle System leakage rate measurement device based on gas chromatography, including it is as follows
Step:
The probe gas not of the same race of certain pressure is filled with to one or more spacecraft sealing systems or shows leakage working medium, will be navigated
Its device is placed in collection vessel, with the concentration of probe gas in gas chromatograph test current collection container, stands a timing
Between after test the concentration variations of different probe gas in collection vessel again with gas chromatograph, calculate boat according to leakage principle
The leakage value of its device different sealing system.
Wherein, the method specifically includes the following steps:
1) it determines that spacecraft needs to be sealed the quantity of system detection, selects different probe gas；
2) a variety of probe gas detection parameters on gas chromatograph are found, mainly include column temperature, flow rate of carrier gas, chromatographic column
Type, detector type, type carrier gases and the method for temperature programming；
3) in the case where gas chromatographic detection parameter constant, the retention time of different probe gas is determined；
4) the different probe gas of certain pressure are filled with to the different sealing system of spacecraft；
5) spacecraft is placed in collection vessel, and seals collection vessel；
6) it opens blower to stir the air in collection vessel, stirs time (t0) it is until will be in collection vessel
Until gas stirring is uniform；
7) stop blower circulation, one or more probe gas in collection vessel detected with gas chromatograph,
And different location in collection vessel is detected respectively；
8) gas chromatograph examination criteria gas is used, according to external standard method or normalization method, is calculated a kind of in collection vessel
Or the concentration A of a variety of probe gasi0；External standard method is determined by the known concentration of certain probe gas in testing standard gas
The under test gas concentration of the gas；Normalization method is will to test the content accumulation result note of all components in gas (mixed gas)
It is 1 or 100%, and then can determines content of a certain gas in tested gas；
9) after standing certain time t, opening the blower agitation time is t0；
10) step 7) and step 8) are repeated, the concentration A of one or more probe gas in collection vessel is calculatedi1；
11) according to chromatography system calculation of leak rate formula (1), the integral leakage of a certain sealing system of spacecraft is calculated；
In formula, QiFor the system leak rate (i=0,1,2,3....) of the i-th system in spacecraft sealing system, unit Pa.m3/
s；
P0For the ambient pressure in collection vessel, unit Pa；
Ai1Standing certain time (t) in collection vessel for spacecraft, i probe gas concentration, unit are percentage composition afterwards；
Ai0For spacecraft, in collection vessel placement, i probe gas concentration, unit are percentage composition at the beginning；
V1For spacecraft volume, unit m3；
V2For trapped volume volume, unit m3；
T is spacecraft time of repose in collection vessel, unit s.
Wherein, it in step 7), needs to open aspiration pump in advance before detection.
Advantages of the present invention mainly has:
1) leak rate of a variety of multiple sealing systems of probe gas parallel detection spacecraft can be used, spacecraft sealing system is shortened
It unites the leak detection time；
2) a variety of probe gas be can detecte, solving can only be using helium as probe gas in Helium Leak Test
Limitation, so that the sealing system leak detection during gas chromatography leak detection not only meets spacecraft, also can satisfy boat
Its device sealing system fills the quantitative leak detection after true working medium and fueling；
3) gas chromatography leak detection compares has sampling simple with the leak detection of helium mass spectrography, and equipment operation is simply hardly damaged
The advantages of, helium mass spectrum leak detection method needs vacuum environment, and equipment operation complexity be easy to cause damage；
4) gas chromatography leak detection does not have to setting-out operation, and directlying adopt Standard Gases or normalization method can calculate and show leakage
The concentration amount of gas has quantitative advantage, and can reduce systematic error.
Detailed description of the invention
Fig. 1 is the Space Vehicle System leak rate detecting system schematic diagram of the invention based on gas chromatography.
Wherein, 1, high-purity carrier gas gas source；2, gas chromatograph；3, aspiration pump；4, blower；5, collection vessel；6, spacecraft
Product；7, sampling line；8, calibrating gas gas source.
Specific embodiment
Referring to Fig.1, it is of the invention based on gas chromatography Space Vehicle System leak rate detection system mainly by high-purity carrier gas gas
Source 1, gas chromatograph 2, aspiration pump 3, blower 4, collection vessel 5, sampling line 7 and calibrating gas gas source 8 form.High-purity carrier gas
Gas source 1 is connected with gas chromatograph 2, provides positive pressure gas circuit, while also probe gas being brought into chromatograph 1 and is detected.
Gas chromatograph 1 is detection probe gas capital equipment, is the core of whole system.Aspiration pump 3 is used for will be in collection vessel 5
Gas be transported in chromatograph, reach the function of fetching and delivering gas.Several blowers 4 are to carry out the air in collection vessel 5
Agitation, so that the 5 various gas componants in inside of collection vessel are uniformly distributed.Collection vessel 5 is used to collect the sealing of spacecraft product 6
One or more probe gas that system leak goes out, so that the concentration of probe gas changes.Sampling line 7 is mainly used for receiving
Collect the sampling of gas in container, the distribution of 7 multiple spot of sampling line is accuracy in order to ensure the test results.Calibrating gas gas source 8
It is mainly used for determining retention time of one or more probe gas on chromatogram, because in the case where parameter constant,
The retention time of certain gas is fixed and invariable, thus may determine that position of the gas componant in chromatography in measurement below
It sets；Calibrating gas can also demarcate (i.e. quantitative analysis) result of gas chromatographic detection simultaneously, reduce test error.It is whole
The embodiment of a test macro are as follows: after blower 4 is uniform by the gas stirring in collection vessel 5, aspiration pump 3 is by collection vessel
Gas in 5 is transported in gas chromatograph 2；Gas chromatograph 2 tests gas and standard gas in collection vessel 5 respectively
Body determines the levels of one or more probe gas in collection vessel；It is one or more before and after being stood by comparison to show
The concentration variable quantity of gas leakage body, and then the leak rate of spacecraft different sealing system can be calculated.
Below by taking the integral leakage of 4 sealing systems in parallel detection spacecraft as an example, gas chromatography testing procedure is introduced:
1) spacecraft has 4 sealing systems to need parallel progress integral leakage test, selects 4 kinds of different probe gas, such as
(Krypton, xenon, ethane and sulfur hexafluoride)；
2) chromatographic column selects the 5A packed column of 4m, and detector selects helium ionization detector or thermal conductivity detector (TCD), carrier gas choosing
With high-purity helium, purity is not less than 99.999%；
3) (contain certain density Krypton, xenon, ethane and sulfur hexafluoride, base with gas chromatograph examination criteria gas
Quasi- gas is helium), determine the retention time on chromatogram of 4 kinds of probe gas；
4) high-purity Krypton, xenon, ethane and the sulfur hexafluoride gas of certain pressure are filled with respectively to 4 sealing systems of spacecraft
Body；
5) spacecraft is placed in collection vessel, and seals collection vessel；
6) it opens blower to stir the air in collection vessel, stirs time (t0) it is until will be in collection vessel
Until gas stirring is uniform；
7) aspiration pump will be collected indoor gas and be pumped to chromatograph, and indoor gas is collected in gas chromatograph detection, according to
According to external standard method or normalization method, the concentration A of Krypton in collection vessel, xenon, ethane and sulfur hexafluoride gas is calculatedi0；
8) after standing certain time t, opening the blower agitation time is t0；
9) step 6) and step 7) are repeated, the dense of Krypton in collection vessel, xenon, ethane and sulfur hexafluoride gas is calculated
Spend Ai1；
10) according to chromatography system calculation of leak rate formula (1), the integral leakage of 4 sealing systems of spacecraft is calculated separately.
This detection method is included compared to more other leakage detection methods can be with the multiple sealing systems of parallel detection；It expands
Probe gas range of choice；Setting-out operation is not needed in detection process, eliminates the lasting progress of sealing system leakage during setting-out
Bring error；The detection method is easy to operate, has the advantage for directly testing atmospheric environment.
Although a specific embodiment of the invention is described in detail and is illustrated above, it should be noted that
Those skilled in the art can spirit according to the present invention various equivalent changes and modification, institute are carried out to above embodiment
The function of generation, should all be within protection scope of the present invention in the spirit covered without departing from specification and attached drawing.
Claims (3)
1. the method that the Space Vehicle System leakage rate measurement device based on gas chromatography is hunted leak, includes the following steps:
The probe gas not of the same race of certain pressure is filled with to one or more spacecraft sealing systems or shows leakage working medium, by spacecraft
It is placed in collection vessel, with the concentration of probe gas in gas chromatograph test current collection container, stands after a certain period of time
The concentration variation for testing the different probe gas in collection vessel again with gas chromatograph calculates spacecraft according to leakage principle
The leakage value of different sealing system, wherein the measuring device of the Space Vehicle System leak rate based on gas chromatography, it is main to wrap
High-purity carrier gas gas source, gas chromatograph, aspiration pump, blower, collection vessel, sampling line and calibrating gas gas source are included, several
Blower is uniformly arranged on each corner of collection vessel, and gas chromatograph connects with calibrating gas gas source, high-purity carrier gas gas source respectively
It is logical, and be connected to by aspiration pump with the multichannel sampling line through collection vessel wall；The method specifically includes the following steps:
1) it determines that spacecraft needs to be sealed the quantity of system detection, selects different probe gas；
2) a variety of probe gas detection parameters on gas chromatograph are found, mainly include column temperature, flow rate of carrier gas, chromatographic column class
Type, detector type, type carrier gases and the method for temperature programming；
3) in the case where gas chromatographic detection parameter constant, the retention time of different probe gas is determined；
4) the different probe gas of certain pressure are filled with to the different sealing system of spacecraft；
5) spacecraft is placed in collection vessel, and seals collection vessel；
6) it opens blower to stir the air in collection vessel, stirs time t0For until the gas in collection vessel is stirred
Until moving uniformly；
7) stop blower circulation, one or more probe gas in collection vessel are detected with gas chromatograph, and point
It Jian Ce not different location in collection vessel；
8) gas chromatograph examination criteria gas is used, according to external standard method or normalization method, is calculated a kind of or more in collection vessel
The concentration A of kind probe gasi0；
9) after standing certain time t, opening the blower agitation time is t0；
10) step 7) and step 8) are repeated, the concentration A of one or more probe gas in collection vessel is calculatedi1；
11) according to chromatography system calculation of leak rate formula (1), the integral leakage of a certain sealing system of spacecraft is calculated；
In formula, QiFor the system leak rate of the i-th system in spacecraft sealing system, wherein i=0,1,2,3 ... ..n, n are integer, single
Position Pa m3/s；
P0For the ambient pressure in collection vessel, unit Pa；
Ai1The probe gas concentration of the i-th system after certain time t is stood in collection vessel for spacecraft, unit contains for percentage
Amount；
Ai0The probe gas concentration of the i-th system at the beginning is placed in collection vessel for spacecraft, unit is percentage composition；
V1For spacecraft volume, unit m3；
V2For trapped volume volume, unit m3；
T is spacecraft time of repose in collection vessel, unit s.
2. the method for claim 1, wherein calibrating gas gas source is configured to the one or more of known quantity concentration and shows leakage
The gas source of gas.
3. the method for claim 1, wherein in step 7), needing to open aspiration pump in advance before detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497819.8A CN106441727B (en) | 2015-08-13 | 2015-08-13 | Space Vehicle System device for detecting leak rate and detection method based on gas chromatography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497819.8A CN106441727B (en) | 2015-08-13 | 2015-08-13 | Space Vehicle System device for detecting leak rate and detection method based on gas chromatography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106441727A CN106441727A (en) | 2017-02-22 |
| CN106441727B true CN106441727B (en) | 2018-12-25 |
Family
ID=58092666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510497819.8A Expired - Fee Related CN106441727B (en) | 2015-08-13 | 2015-08-13 | Space Vehicle System device for detecting leak rate and detection method based on gas chromatography |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106441727B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521164A (en) * | 2018-12-28 | 2019-03-26 | 上海勘察设计研究院(集团)有限公司 | Thick wall body crosscutting concern detection system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881688A (en) * | 2010-06-13 | 2010-11-10 | 清华大学 | Standard distribution sample for detecting comprehensive performance of environmental chamber and detection method thereof |
| US8230722B1 (en) * | 2010-03-16 | 2012-07-31 | Sandia Corporation | Residual gas analysis device |
| JP2012229918A (en) * | 2011-04-22 | 2012-11-22 | Shimadzu Corp | Gas chromatograph |
| CN102928171A (en) * | 2011-08-08 | 2013-02-13 | 北京卫星环境工程研究所 | Uncertainty determination method of spacecraft total leak rate test result |
| CN104406748A (en) * | 2014-12-02 | 2015-03-11 | 北京卫星环境工程研究所 | Spacecraft leakage rate testing system performing parallel air extraction by molecular pumps and cryogenic pump |
-
2015
- 2015-08-13 CN CN201510497819.8A patent/CN106441727B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8230722B1 (en) * | 2010-03-16 | 2012-07-31 | Sandia Corporation | Residual gas analysis device |
| CN101881688A (en) * | 2010-06-13 | 2010-11-10 | 清华大学 | Standard distribution sample for detecting comprehensive performance of environmental chamber and detection method thereof |
| JP2012229918A (en) * | 2011-04-22 | 2012-11-22 | Shimadzu Corp | Gas chromatograph |
| CN102928171A (en) * | 2011-08-08 | 2013-02-13 | 北京卫星环境工程研究所 | Uncertainty determination method of spacecraft total leak rate test result |
| CN104406748A (en) * | 2014-12-02 | 2015-03-11 | 北京卫星环境工程研究所 | Spacecraft leakage rate testing system performing parallel air extraction by molecular pumps and cryogenic pump |
Non-Patent Citations (1)
| Title |
|---|
| 航天器被动检漏方法的探讨;康小录;《上海航天》;20000630;第39页右栏 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106441727A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lerol et al. | Accurate measurement of activity coefficient at infinite dilution by inert gas stripping and gas chromatography | |
| Ewing et al. | Detection of volatile vapors emitted from explosives with a handheld ion mobility spectrometer | |
| CN104296943A (en) | Vacuum type helium detecting equipment and method thereof | |
| Brandis et al. | Titan atmospheric entry radiative heating | |
| WO2001063238A1 (en) | System for determining integrity of a gas-sealed compartment | |
| CN104006929A (en) | Mass spectrometry single point leak detection system and method based on voltage limiting-shunting method in atmospheric environment | |
| CN107543664A (en) | More sealing system leakage rate measurement method and apparatus | |
| JP2014508275A (en) | Extraction method and system for monitoring the presence of phosphate esters in jet fuel | |
| CN106441727B (en) | Space Vehicle System device for detecting leak rate and detection method based on gas chromatography | |
| KR940704048A (en) | Method and apparatus for detecting leaks in through structures of a working reactor vessel head | |
| CN103542988A (en) | Method for detecting leakproofness of components through internal gas mass spectrometric analysis | |
| CN105403290A (en) | Natural gas circular flow standard test system | |
| CN106546383B (en) | Liquid refrigerant perfluoro triethylamine leakage test method | |
| CN106288556B (en) | Oil content acquisition device and method and air conditioning system | |
| CN104764862A (en) | Gas concentration site testing method | |
| CN106124134B (en) | Optical window component device for detecting leak rate and detection method | |
| CN104062081A (en) | Remotely-controlled wide-range gas leakage rate detection device | |
| CN107290108A (en) | A kind of monotrysian type sulfur hexafluoride on-line detector slip detection method | |
| US9588034B1 (en) | Apparatus and method for automated permeation testing of vapor and liquid penetration | |
| RU2654340C1 (en) | Method of testing products on total leakage | |
| CN108592714A (en) | A kind of experimental rig for testing Fragment Velocities decaying | |
| RU2421700C1 (en) | Method of determining leakage in articles | |
| RU2457454C1 (en) | Method of determining air-tightness of articles operating under external pressure | |
| Savino et al. | Behaviour of hypersonic wind tunnels diffusers at low Reynolds numbers | |
| RU2018790C1 (en) | Method for determining cubic capacity of nonpressuretight gas-filled container |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181225 Termination date: 20210813 |