CN106644886A - Method for testing seepage performance of thermoplastic plastic mixed gas and test device thereof - Google Patents
Method for testing seepage performance of thermoplastic plastic mixed gas and test device thereof Download PDFInfo
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- CN106644886A CN106644886A CN201611238133.8A CN201611238133A CN106644886A CN 106644886 A CN106644886 A CN 106644886A CN 201611238133 A CN201611238133 A CN 201611238133A CN 106644886 A CN106644886 A CN 106644886A
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- 238000012360 testing method Methods 0.000 title claims abstract description 187
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims description 27
- 238000010926 purge Methods 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 230000035699 permeability Effects 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000010408 sweeping Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 103
- 239000000523 sample Substances 0.000 description 32
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000006399 behavior Effects 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a method for testing the seepage performance of thermoplastic plastic mixed gas and a test device thereof. The test device comprises a mixed test gas air source, a sweeping gas air source, a temperature control system, a vacuum pump, a metal test cavity and the like. The device can simulate the conditions of high-temperature high-pressure and mixed gas medium ingredients, practical pipeline materials and wall thickness and the like of the oil field environment, so that the test result can express the seepage behavior of the mixed gas in the practical service environment in a thermoplastic plastic pipe. The device has the test principle of a pressure difference method. A test specimen for the test is sealed inside the metal test cavity; a heating sleeve is used for heating the test environment to the specific temperature; a vacuum pump is used for vacuum pumping on the upper and lower cavities of the metal test cavity; then, mixed test gas is inflated into the upper cavity to the specified pressure; pressure differences are formed between the upper surface and the lower surface of the test specimen; then, a pressure collecting system is used for recording the pressure change in the lower cavity in real time, so that the passing quantity of the gas through the test specimen is expressed.
Description
Technical field：
The invention belongs to polymeric material gas permeability technical field of measurement and test, and in particular to one kind test thermoplasticity modeling
The method and experimental rig of material mixed gas permeance property.
Background technology：
Containing H2S natural gases have become the important component part of China's natural gas resource.Particularly in recent years NE Sichuan is natural
I gas fields in gas field, Central Tarim, long celebrating such as are pacified the border region at the extensive discovery of sulfur Gas Fields, are " sending in river gas east ", " West-east Gas
The quickening deployment of engineering brings Resource Guarantee.For the defeated use pipeline of sulfur-containing oil-gas collection, the non-metallic pipe of fine corrosion resistance
Material is just becoming an important selection.Oil field early stage uses the reinforced thermosetting plastics pipe with glass reinforced plastic pipe as representative, this kind of
Tubing pressure-bearing and temperature resistant capability are good, but its impact resistance and joint tighness are poor, therefore mainly for delivery of oil-water media,
Try out only in some low pressure gas transmission environment at present.In recent years, using the excellent thermoplastic of pliability as the enhancing of liner
Multiple tube (also referred to as RTP, flexible composite pipe etc.) becomes that ground, especially marine oil and gas collection are defeated to use novel metalloid tubing.Heat
It with thermoplastic polymer resin's such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) etc. is main that thermoplastic plastic pipe is all
Composition, adds machine-shaping after various auxiliary agents.In use, due to there is gas pressure difference inside and outside tube wall, because
This gas molecule can be entered inside tube wall under the driving of potential energy by behaviors such as absorption, diffusions, that is, phenomenon of osmosis occurs.According to report
Road, under high temperature, the defeated state of high pressure sour environment collection, with gas medium (CH4、H2S、CO2Deng mixed gas) directly contact
Thermoplastic liner easily fails because of inner surface bubbling.Its reason is that gas component penetrates into inner liner, a period of time
Afterwards the gas pressure of material internal accumulation tends to balance with conduit running pressure.When pipeline is depressured suddenly because of reasons such as maintenance,
Gas volume instantaneous expansion inside thermoplastic, so as to form " bubbling " in inner surface of tube wall, destroys pipeline integrity,
Also result in the hidden danger of plugging.If gas osmosis is strong, gas will transmit through inner liner and then be gathered among interlayer structure,
When unexpected pressure drop occurs in pipeline inside, then it is likely to result in collapsing for interior layer and scraps pipeline.
It can thus be seen that permeability behavior of the gas medium in thermoplastic be cause one of pipeline failure it is important
Reason.It is therefore desirable to setting up the gas permeation test method and related device of thermoplastic plastic pipe, tubing is evaluated with this and is existed
Actual high temperature, high pressure, the mixing gas component being on active service is (such as CH4、H2S、CO2Deng) permeance property in medium, it is resistance to gas infiltration
Property excellent thermoplastic selection direct basis are provided.
Currently, the basic test principle of gas permeability is that the gas flow of permeable material is tested using pressure differential method.It is domestic special
Profit：200810045129.9、201110030090.5、201210084222.7、201220120157.4、
201020277016.4th, 201220394187.4,201020592490.6,201120187735.1 etc. all kinds of gases are disclosed ooze
Permeability test device.But apparatus above or it is not suitable for the gas permeability of test polymer material, or only true pin film
Sample (10-5～10-4M), and can only carry out pure gas component low pressure (0.1MPa pressure reduction), low temperature (<100 DEG C) under the conditions of
Test, it is impossible to simulate actual application environment of the tubing in oil field.
The content of the invention：
Present invention aims to the deficiency of existing experimental technique, there is provided a kind of to simulate actual Service Environment
Under high temperature, condition of high voltage, the method and experimental rig of thermoplastic mixed gas permeance property is tested.
To reach above-mentioned purpose, the present invention is to be achieved through the following technical solutions：
A kind of experimental rig for testing the resistance to mixed gas permeance property of thermoplastic, including bulk testing gas source,
Purge gas source of the gas, temperature-controlling system, vavuum pump and metallic test cavity；Wherein,
Gas inlet/outlet pipe is provided with the top of the metallic test cavity, bottom is provided with pressure acquisition system, circumferentially disposed
There is the heating mantle being connected with temperature-controlling system；
Bulk testing gas source and purge gas source of the gas are connected by gas inlet/outlet pipe with metallic test cavity, and
Branched pipe is additionally provided with gas inlet/outlet pipe, vavuum pump is arranged on the branched pipe；
During test, test sample is arranged in metallic test cavity.
The present invention is further improved by, and metallic test cavity includes matching used test cavity cavity of resorption and test chamber
Body epicoele, gas inlet/outlet pipe is arranged on the top of test cavity epicoele, and pressure acquisition system is arranged on the bottom of test cavity cavity of resorption
Portion.
The present invention is further improved by, and during test, test sample is arranged on test by porous ceramic support thing
On cavity epicoele, O-ring seal is provided between test sample, and tests cavity epicoele test is used by O-ring seal
Sample applies pressure.
The present invention is further improved by, and also including acid gas absorption tower, it is connected with vavuum pump outlet side.
The present invention is further improved by, and also including methane absorber, it is connected with acid gas absorption tower outlet side
It is logical.
The present invention is further improved by, and also includes and the pressure gauge being arranged on gas inlet/outlet pipe.
The present invention is further improved by, on the outlet side pipeline of bulk testing gas source, purge gas source of the gas
Valve is provided with the pipeline of outlet side and on branched pipe.
The present invention is further improved by, and also includes the bypass conduit being arranged in parallel with vavuum pump, and the bypass conduit
On be provided with valve.
A kind of method of test thermoplastic mixed gas permeance property, the method is based on a kind of above-mentioned test thermoplasticity
The experimental rig of the resistance to mixed gas permeance property of plastics, comprises the following steps：
1) sample prepares：Test sample is obtained by the body machining of thermoplastic pipes, or from prefabricated thermoplastic
Cut on property plastic plate；
2) sample is installed：By test with sample be arranged on metallic test cavity in, and ensure metal test chamber body seal and
Test is fixed with sample；
3) test temperature is set up：Temperature-controlling system is opened, test temperature is set；
4) vacuum environment is set up：Open vavuum pump to be evacuated to metallic test cavity space<20Pa；
5) it is passed through gas：Open bulk testing gas source and be filled with mixed gas to testing pressure to metallic test inside cavity
Power, and the pressure is remained, the component of mixed gas needs allotment according to test；
6) test is started：Opening pressure acquisition system, real-time monitoring metallic test cavity space pressure change；
7) pipeline purging：It is tested to up to after setting time, closing presure acquisition system, closes bulk testing gas source,
UNICOM tests cavity epicoele and test cavity cavity of resorption, purge gas source of the gas is opened, using the N of 0.1MPa2Gas is to metallic test
Cavity and pipeline carry out purging 1h；
8) result of the test：Metallic test cavity is opened, test sample, and the pressure gathered using pressure acquisition system is taken out
Power delta data, calculates permeability of the mixed gas in test sample.
The present invention has following beneficial effect：
A kind of experimental rig of test thermoplastic mixed gas permeance property that the present invention is provided, including bulk testing
Gas source, purge gas source of the gas, temperature-controlling system, vavuum pump and metallic test cavity etc., it is during test, test is close with sample
Metallic test inside cavity is enclosed in, using heating mantle Control experiment temperature, is taken out the upper and lower cavity for testing cavity very using vavuum pump
Sky, is filled with afterwards test mixed gas into epicoele.Using pressure differential method principle, the pressure change in Real-time Collection cavity of resorption, with this
Characterize the transit dose that gas passes through tubing under specified conditions.
A kind of method of test thermoplastic mixed gas permeance property that the present invention is provided, the method simulation tubing shows
High temperature, the high pressure conditions of field application, are sealed in the circular test sample that material and thickness are equal to actual tubing metal and survey
Examination inside cavity, assigned temperature is heated to using heating mantle by test environment, using vavuum pump by the upper and lower of metallic test cavity
Chamber vacuumizes, and is filled with bulk testing gas (such as CH to epicoele afterwards4、H2S、CO2Mixed gas) to specified pressure, make sample
Upper and lower surface between form pressure reduction.Pressure acquisition system pressure change then in real time record cavity of resorption, characterizes gas and leads to this
Cross the transit dose of sample.In short, the present invention has following some advantage：
1st, method of testing of the present invention is reasonable in design, experimental rig have it is easy to operate, test it is directly perceived the characteristics of；
2nd, the material and thickness of sample are equal to actual tubing in experimental rig, test gas component and test-strips and reality
Military service situation is identical, and acquired results can characterize the resistance to gas permeability of final products；
3rd, in experimental rig by pressure acquisition system, can real-time monitoring gas infiltration capacity.
In sum, the measuring gas permebility of the achievable unlike material of the present invention and wall thickness thermoplastic, and test
It is adjustable with gas component, temperature and pressure.
Description of the drawings：
Fig. 1 is the structural representation of the experimental rig of the resistance to mixed gas permeance property of present invention test thermoplastic.
In figure：1- bulk testing gas sources；2- purge gas sources of the gas；3- tests cavity cavity of resorption；4- test samples；5-
Pressure acquisition system；6- porous ceramic support things；7- temperature-controlling systems；8- vavuum pumps；9- acid gas absorption towers；10- methane is inhaled
Receive tower；11- heating mantles；12-O type sealing rings；13- tests cavity epicoele；14- pressure gauges.
Specific embodiment：
Below in conjunction with drawings and Examples, the present invention will be further described.
As shown in figure 1, a kind of experimental rig of the resistance to mixed gas permeance property of test thermoplastic of the present invention, including mixed
Close test gas source of the gas 1, purge gas source of the gas 2, test cavity cavity of resorption 3, test sample 4, pressure acquisition system 5, porous to make pottery
Porcelain supporter 6, temperature-controlling system 7, vavuum pump 8, acid gas absorption tower 9, methane absorber 10, heating mantle 11, O-ring seal
12nd, cavity epicoele 13 and pressure gauge 14 are tested；Wherein, metallic test cavity is by testing cavity epicoele 13 and test cavity cavity of resorption 3
Two parts are constituted, and are threaded connection therebetween as an entirety, and by compressing O-ring seal 12 by test sample 4
It is sealed in test inside cavity.Side (low-pressure side) is oozed out using porous ceramic support thing 6 in the gas of sample to be supported, prevent
The only excessive deformation of test sample 4 or breakage when upper and lower cavity has High Pressure Difference.After test sample 4 is mounted and sealed, metal
Two chambers up and down of test cavity are connected by pipeline, and the connection or disconnection for passing through two chambers of Valve controlling.Temperature-controlling system 7 according to
According to set value calculation heating mantle 11 by the ambient stable in metallic test cavity in assigned temperature.Start vavuum pump 8 to survey on metal
Gas in examination cavity is extracted out, forms vacuum.Opening bulk testing gas source 1 will be filled with designated groups to test cavity epicoele 13
The bulk testing gas for dividing, according to the reading of pressure gauge 14 by pressure stability in desired value, so as to be formed between upper and lower cavity
Stable pressure differential.Purge gas source of the gas 2 is opened, inert gas will be filled with to metallic test inside cavity, by metallic test chamber
The bulk testing gas of body and channel interior residual is purged to acid gas absorption tower 9 and methane absorber 10.Sour gas is inhaled
Receive the inside of tower 9 and be full of strong alkali solution, the H in gas can be fully absorbed2S and CO2Component.The filling of the inside of methane absorber 10
Activated carbon, can be with the CH in adsorbed gas4Component, even if there is very small amount CH4External environment condition is carried along into by purge gas, its is dense
Degree is also diluted to far below LEL, meets security regulations.Pressure acquisition system 5 then cavity pressure can become under real-time monitoring
Change, and then calculate infiltration capacity of the specific gas in test sample material.
Embodiment 1：Test is high to contain H2The mixed gas of S are under the conditions of 70 DEG C to the permeance property of Kynoar：
1) sample prepares：The polyethylene circular piece of diameter 10mm and wall thickness 2.5mm is produced as test sample 4；
2) sample is installed：Inside test cavity cavity of resorption 3 by test with sample 4 as metallic test cavity, its lower setting
Porous ceramic support thing 6, places thereon O-ring seal 12, then by test cavity epicoele 13 and the screw thread of test cavity cavity of resorption 3
Screw, realize the sealing and fixation of test sample 4；
3) test temperature is set up：Temperature-controlling system 7 is opened, test temperature is set as 70 DEG C；
4) vacuum environment is set up：Connection test cavity epicoele 13 and test cavity cavity of resorption 3, open vavuum pump 8 and metal are surveyed
Examination cavity space is evacuated to<20Pa；
5) it is passed through gas：Disconnect test cavity epicoele 13 and test cavity cavity of resorption 3, open bulk testing gas source 1 to
Mixed gas (component/mol ratio is filled with inside test cavity epicoele 13：CH491.5%th, H2S 6.0%, CO22.5%) extremely
10MPa, and remain the pressure；
6) test is started：Opening pressure acquisition system 5, real-time monitoring metallic test cavity space pressure change；
7) pipeline purging：It is tested to up to after setting time (such as 200h), closing presure acquisition system 5, closes bulk testing
Gas source 1, UNICOM tests cavity epicoele 13 and test cavity cavity of resorption 3, purge gas source of the gas 2 is opened, using the N of 0.1MPa2
Gas carries out purging 1h to metallic test cavity and pipeline, and each component of bulk testing gas will be in acid gas absorption tower and first
Alkane is fully absorbed in absorption tower, minimal amount of CH4By N2Environment is diluted and is carried along into, its concentration is also far below LEL,
Meet security regulations and take out pipe sample；
8) result of the test：Separate sample cavity, take out test sample 4, and the pressure gathered using pressure acquisition system 5
Delta data, calculates mixed gas in permeability of the test in sample 4.
Claims (9)
1. a kind of experimental rig of the test resistance to mixed gas permeance property of thermoplastic, it is characterised in that including bulk testing
Gas source (1), purge gas source of the gas (2), temperature-controlling system (7), vavuum pump (8) and metallic test cavity；Wherein,
Gas inlet/outlet pipe is provided with the top of the metallic test cavity, bottom is provided with pressure acquisition system (5), is circumferentially provided with
The heating mantle (11) being connected with temperature-controlling system (7)；
Bulk testing gas source (1) and purge gas source of the gas (2) are connected by gas inlet/outlet pipe with metallic test cavity,
And branched pipe is additionally provided with gas inlet/outlet pipe, vavuum pump (8) is arranged on the branched pipe；
During test, test sample (4) is arranged in metallic test cavity.
2. the experimental rig of a kind of test resistance to mixed gas permeance property of thermoplastic according to claim 1, it is special
Levy and be, metallic test cavity includes matching used test cavity cavity of resorption (3) and test cavity epicoele (13), gas inlet/outlet pipe
The top of test cavity epicoele (13) is arranged on, pressure acquisition system (5) is arranged on the bottom of test cavity cavity of resorption (3).
3. the experimental rig of a kind of test resistance to mixed gas permeance property of thermoplastic according to claim 2, it is special
Levy and be, during test, test sample (4) is arranged in test cavity epicoele (13) by porous ceramic support thing (6), test
With being provided with O-ring seal (12) between sample (4), and test cavity epicoele (13) test is used by O-ring seal (12)
Sample (4) applies pressure.
4. the experimental rig of a kind of test resistance to mixed gas permeance property of thermoplastic according to claim 2, it is special
Levy and be, also including acid gas absorption tower (9), it is connected with vavuum pump (8) outlet side.
5. the experimental rig of a kind of test resistance to mixed gas permeance property of thermoplastic according to claim 4, it is special
Levy and be, also including methane absorber (10), it is connected with acid gas absorption tower (9) outlet side.
6. the experimental rig of a kind of test resistance to mixed gas permeance property of thermoplastic according to claim 2, it is special
Levy and be, also include and the pressure gauge (14) being arranged on gas inlet/outlet pipe.
7. the experimental rig of a kind of test resistance to mixed gas permeance property of thermoplastic according to claim 2, it is special
Levy and be, on the outlet side pipeline of bulk testing gas source (1), on the outlet side pipeline of purge gas source of the gas (2) and point
Valve is provided with arm.
8. the experimental rig of a kind of test resistance to mixed gas permeance property of thermoplastic according to claim 2, it is special
Levy and be, also include the bypass conduit being arranged in parallel with vavuum pump (8), and valve is provided with the bypass conduit.
9. it is a kind of test thermoplastic mixed gas permeance property method, it is characterised in that the method be based on claim 1
To a kind of experimental rig of the resistance to mixed gas permeance property of test thermoplastic any one of 8, comprise the following steps：
1) sample prepares：Test is obtained with sample (4) by the body machining of thermoplastic pipes, or from prefabricated thermoplasticity
Cut on plastic plate；
2) sample is installed：By test with sample (4) in metallic test cavity, and ensure metal test chamber body seal and try
Test fixed with sample (4)；
3) test temperature is set up：Temperature-controlling system (7) is opened, test temperature is set；
4) vacuum environment is set up：Open vavuum pump (8) to be evacuated to metallic test cavity space<20Pa；
5) it is passed through gas：Open bulk testing gas source (1) and be filled with mixed gas to testing pressure to metallic test inside cavity
Power, and the pressure is remained, the component of mixed gas needs allotment according to test；
6) test is started：Opening pressure acquisition system (5), real-time monitoring metallic test cavity space pressure change；
7) pipeline purging：It is tested to up to after setting time, closing presure acquisition system (5), closes bulk testing gas source
(1), UNICOM's test cavity epicoele (13) and test cavity cavity of resorption (3), open purge gas source of the gas (2), using the N of 0.1MPa2
Gas carries out purging 1h to metallic test cavity and pipeline；
8) result of the test：Metallic test cavity is opened, test is taken out with sample (4), and gathered using pressure acquisition system (5)
Pressure change data, calculate mixed gas in permeability of the test in sample (4).
Priority Applications (1)
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| CN201611238133.8A CN106644886A (en) | 2016-12-28 | 2016-12-28 | Method for testing seepage performance of thermoplastic plastic mixed gas and test device thereof |
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| CN201611238133.8A CN106644886A (en) | 2016-12-28 | 2016-12-28 | Method for testing seepage performance of thermoplastic plastic mixed gas and test device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900612A (en) * | 2017-12-11 | 2019-06-18 | 中国科学院大连化学物理研究所 | A kind of permeable compression testing device of porous material |
| CN110865017A (en) * | 2019-12-26 | 2020-03-06 | 华侨大学 | Permeability tester |
| CN111189943A (en) * | 2020-03-05 | 2020-05-22 | 中国烟草总公司郑州烟草研究院 | Method for detecting glycerin permeation rate in tobacco flakes |
| WO2020224632A1 (en) * | 2019-05-08 | 2020-11-12 | 中南大学 | Method for testing leakage performance of aerospace composite material member in low temperature environment |
| CN113092529A (en) * | 2021-04-02 | 2021-07-09 | 东北大学 | Gas distribution device and method for protecting explosion venting film based on pressure balance principle |
| CN113933224A (en) * | 2021-10-26 | 2022-01-14 | 航天特种材料及工艺技术研究所 | System and method for testing high-temperature air permeability of thermal protection material |
| CN114324109A (en) * | 2021-12-28 | 2022-04-12 | 临海伟星新型建材有限公司 | Interior bushing pipe gas permeation detection device |
| CN114324108A (en) * | 2021-12-28 | 2022-04-12 | 临海伟星新型建材有限公司 | Internally-inserted pipeline gas permeation detection device and operation method |
| CN115420665A (en) * | 2022-09-12 | 2022-12-02 | 西南石油大学 | Device and method for measuring permeability of PE (polyethylene) pipe material under hydrogen-mixed natural gas |
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| CN109900612B (en) * | 2017-12-11 | 2023-12-15 | 中国科学院大连化学物理研究所 | Porous material water permeability pressure testing device |
| WO2020224632A1 (en) * | 2019-05-08 | 2020-11-12 | 中南大学 | Method for testing leakage performance of aerospace composite material member in low temperature environment |
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| CN111189943A (en) * | 2020-03-05 | 2020-05-22 | 中国烟草总公司郑州烟草研究院 | Method for detecting glycerin permeation rate in tobacco flakes |
| CN113092529A (en) * | 2021-04-02 | 2021-07-09 | 东北大学 | Gas distribution device and method for protecting explosion venting film based on pressure balance principle |
| CN113933224A (en) * | 2021-10-26 | 2022-01-14 | 航天特种材料及工艺技术研究所 | System and method for testing high-temperature air permeability of thermal protection material |
| CN114324109A (en) * | 2021-12-28 | 2022-04-12 | 临海伟星新型建材有限公司 | Interior bushing pipe gas permeation detection device |
| CN114324108A (en) * | 2021-12-28 | 2022-04-12 | 临海伟星新型建材有限公司 | Internally-inserted pipeline gas permeation detection device and operation method |
| CN115420665A (en) * | 2022-09-12 | 2022-12-02 | 西南石油大学 | Device and method for measuring permeability of PE (polyethylene) pipe material under hydrogen-mixed natural gas |
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