CN113533166A - Device for testing high-pressure gas permeability of sealing material in tensile state and application - Google Patents
Device for testing high-pressure gas permeability of sealing material in tensile state and application Download PDFInfo
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- CN113533166A CN113533166A CN202110793545.2A CN202110793545A CN113533166A CN 113533166 A CN113533166 A CN 113533166A CN 202110793545 A CN202110793545 A CN 202110793545A CN 113533166 A CN113533166 A CN 113533166A
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- 239000003566 sealing material Substances 0.000 title claims abstract description 108
- 238000012360 testing method Methods 0.000 title claims abstract description 75
- 230000035699 permeability Effects 0.000 title claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 23
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000009471 action Effects 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 210000003437 trachea Anatomy 0.000 description 3
- 239000002775 capsule Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
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- 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
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- 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
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Abstract
The invention relates to a device for testing the permeability of a sealing material in a stretching state to high-pressure gas and application thereof, wherein the device comprises: a sealing box for placing a sealing material sample (8); a stretching mechanism for stretching the sealing material sample (8); a permeated gas measuring mechanism for testing the gas permeation coefficient of the sealing material sample (8); the device is characterized in that the stretching mechanism is clamped at two ends of the sealing material sample (8), the permeated gas measuring mechanism comprises a gas inlet unit and a gas receiving unit which are respectively positioned on two sides of the sealing material sample (8), the gas receiving unit is provided with a signal assembly for monitoring gas, and the device can be used for testing the high-pressure gas permeability of the sealing material in a stretching state. Compared with the prior art, the method has the advantages of safety, high efficiency, capability of obtaining the high-pressure gas permeability coefficient of the sealing material in different stretching states and the like.
Description
Technical Field
The invention relates to the field of pressure container testing, in particular to a device for testing the permeability of a sealing material in a tensile state to high-pressure gas and application thereof.
Background
The existing air container is usually provided with a layer of sealing material to prevent the stored high-pressure air from leaking. However, the sealing material may still be permeable to air under the action of high pressure air, causing air leakage problems, while the sealing material may also be subjected to tensile deformation in the circumferential direction of the container, which may further accelerate the air leakage problems. Therefore, in order to evaluate whether or not the sealing material can be used in an air container, it is necessary to evaluate the degree of permeability of the sealing material in the air container, and it is necessary to accurately acquire the gas permeability data of the sealing material under high pressure and tension.
At present, the core instrument for testing the gas permeability of the sealing material is a sealing box (permeation box), and the function of the sealing box is to seal the sealing material and maintain the permeation process of high-pressure gas from a high-pressure chamber to a low-pressure chamber through a sealing material sample. The test pressure of the current commercial gas permeameter is generally 0.1MPa, and the requirement of high-pressure test cannot be met. If a commercial seal box is directly used for high-pressure test, the seal material sample in the low-pressure chamber at the connection outlet cannot bear the high pressure (design pressure: 10MPa) of the test, and the gas directly penetrates through the sample and enters the low-pressure chamber, so that the low-pressure side needs to be modified. One possible modification is to place a porous sintered stainless steel plate on the low pressure side to support the sample, and at the start of the test, high pressure gas enters the capsule through the gas inlet, permeates the sample, filter paper and porous sintered stainless steel plate into the low pressure chamber. The sample is supported by the porous plate without pressure-through damage. However, the improvement method has high requirements on the air permeability and the strength performance of the porous sintered stainless steel plate, and the performance of the porous sintered stainless steel plate has a large influence on the test result, so that the structure of the porous sintered stainless steel plate of the high-pressure seal box in the existing test device needs to be further improved.
The existing testing method and device can not test the high-pressure gas permeability of the sealing material in a tensile state. In consideration of the actual service environment of the air container, the high-pressure air stored inside the air container applies high internal pressure to the hole wall, so that the sealing layer is also subjected to tensile deformation in the circumferential direction, and therefore, it is necessary to improve the existing testing method and testing device to obtain the high-pressure gas permeability of the sealing material in a tensile state.
The design pressure of a high-pressure test is generally about 10MPa, and when the pressure of a low-pressure chamber is tested, if a high-pressure sensor with the upper limit of 10MPa is adopted, the test precision is 1kPa which is far greater than the pressure change in the actual test, and the condition that the pressure value of the low-pressure chamber is not changed for a long time is easy to occur; if a pressure sensor with a small measuring range (such as 1 kPa-10 Pa) is adopted, once the sample is suddenly cracked under the action of high pressure in the test process, the pressure of a low-pressure chamber is suddenly increased to 10MPa of a high-pressure chamber, and the pressure sensor is damaged. Therefore, there is a need for an improved method for testing the pressure of a low pressure chamber and a pressure testing system in a testing apparatus.
Disclosure of Invention
The invention aims to overcome at least one of the defects of the prior art and provide a device for testing the gas permeability of a sealing material in a stretching state under the conditions of high pressure and stretching state of a simulated actual service environment, and application thereof.
The purpose of the invention can be realized by the following technical scheme:
an apparatus for testing the permeability of a sealing material to high pressure gas in a stretched condition, the apparatus comprising:
the sealing box is used for placing a sealing material sample;
the stretching mechanism is used for stretching the sealing material sample;
the permeation gas measuring mechanism is used for testing the gas permeation coefficient of the sealing material sample;
the stretching mechanism is clamped at two ends of the sealing material sample, the permeating gas measuring mechanism comprises a gas inlet unit and a gas receiving unit which are respectively positioned on two sides of the sealing material sample, and the gas receiving unit is provided with a signal assembly for monitoring gas.
Further, the gas inlet unit comprises a high-pressure gas inlet and a high-pressure chamber, one end of the gas inlet is connected with the high-pressure chamber, the other end of the gas inlet is connected with a high-pressure gas cylinder, one end of the high-pressure chamber is connected with the high-pressure chamber, and the other end of the high-pressure chamber is abutted to the sealing material sample.
Furthermore, the gas receiving unit also comprises a low-pressure chamber and a low-pressure gas outlet, one end of the low-pressure chamber is connected with the low-pressure gas outlet, the other end of the low-pressure chamber is abutted against the sealing material sample, one end of the low-pressure gas outlet is connected with the low-pressure chamber, and the other end of the low-pressure gas outlet is connected with the signal assembly.
Furthermore, a filter paper and a gas-permeable porous plate which are mutually abutted are arranged between the low-pressure chamber and the sealing material sample, the filter paper is abutted with the sealing material sample, and the gas-permeable porous plate is abutted with the low-pressure chamber.
The strength of the air-permeable porous plate is checked according to the actual test condition so as to ensure that the sealing material sample cannot be broken by pressure penetration depending on the support of the air-permeable porous plate.
Furthermore, the porous plate is provided with a through small hole along the thickness direction, one surface of the porous plate, which is close to the sealing material sample, is provided with a groove communicated with the small hole along the radial direction, and the periphery of one surface of the porous plate, which is far away from the sealing material sample, is provided with a flange.
The small hole that runs through can guarantee that low-pressure chamber is unanimous with sealing material sample atmospheric pressure, and the recess can communicate the aperture along the line to avoid taking place the condition that partial aperture blockked up, the flange can guarantee that ventilative perforated plate lower surface communicates with the low-pressure chamber easily.
Furthermore, the signal assembly comprises an air pipe, a colored liquid drop and a graduated scale; the trachea with gaseous receiving element link to each other, coloured liquid drop be located the trachea, the scale be located the trachea.
And horizontally placing the air pipe, reading the moving distance of the colored liquid drops in the air pipe by using the graduated scale to obtain the moving distance of the colored liquid drops at different moments, and measuring and calculating the permeability coefficient of the obtained sealing material sample.
Further, the sealing box comprises an upper device plate and a lower device plate which are connected through a connecting bolt, and the sealing material sample is positioned between the upper device plate and the lower device plate. The high-pressure chamber and the low-pressure chamber are also located in the spatial range of the sealed box. The volume of the high-pressure chamber is more than 25ml so as to reduce the pressure loss of the high-pressure chamber in the test process; meanwhile, the volume of the low-pressure chamber is reduced as much as possible, which is beneficial to increasing the change degree of the low-pressure side pressure, so that a test instrument can more sensitively measure the result.
Furthermore, a sealing rubber block is arranged in the sealing box and is positioned on the surface of the sealing material sample. The sealing box can be guaranteed to be isolated from the outside air under the action of different tensile loads.
Furthermore, the stretching mechanism comprises a clamp and a shaft sleeve which are connected with each other, the clamp and two ends of the sealing material sample are fixed through screws, and the shaft sleeve is connected with the universal testing machine.
The application of the device for testing the high-pressure gas permeability of the sealing material in the stretching state is used for testing the high-pressure gas permeability of the sealing material in the stretching state, and comprises the following steps:
(1) preparation of a sealing material sample: manufacturing a sealing material sample according to the size of the test device, and reserving the clamping length required by the stretching mechanism;
(2) and (3) sample tensile strain loading: starting a universal testing machine, and applying a preset tensile strain, such as 10%;
(3) and (3) sample installation: fixing the sealing material sample in a sealing box;
(4) low-pressure chamber flushing: connecting a high-pressure pipeline of an external high-pressure gas cylinder to a low-pressure gas outlet, unscrewing a gas valve of the gas cylinder, then unscrewing a pressure reducing valve to adjust the pressure to a proper value, flushing a low-pressure chamber, and discharging original air as much as possible;
(5) high-pressure chamber flushing: scouring the high-pressure chamber in the same steps to ensure that the sealing box is completely sealed;
(6) introducing high-pressure gas: flushing high-pressure gas into the high-pressure chamber through the high-pressure gas inlet to a preset value, such as 10 MPa;
(7) the test was started: starting a permeating gas measuring mechanism, reading initial readings of colored liquid drops in the gas pipe, recording indoor temperature, reading scales of the colored liquid drops and the indoor temperature every 1 hour, and finishing the test after the data of the colored liquid drops are stable in change and continue to be read for a period of time;
(8) and (3) test results: and balancing the pressure difference between the inside and the outside of the sealing box, taking out the sample, and converting the moving distance of the colored liquid drops in the gas pipe into the volume of gas which penetrates through the sealing material sample from the high-pressure chamber and enters the low-pressure chamber, thereby calculating the gas permeability coefficient of the sealing material sample.
Compared with the prior art, the invention has the following advantages:
(1) the testing method is safe and efficient, and can obtain the high-pressure gas permeability coefficients of the sealing material in different stretching states;
(2) the testing device has reasonable integral structure design and intuitive measurement;
(3) the special structure of the metal porous plate in the test device can lead the air pressure at the bottom plate of the sealing material sample to be consistent with the air pressure of the low-pressure chamber, and simultaneously ensure that the sealing material sample cannot be broken by pressure penetration depending on the support of the metal porous plate;
(4) the system for testing the permeating gas in the testing device can sensitively convert the volume of the gas which permeates the sealing material from the high-pressure chamber and enters the low-pressure chamber so as to measure the permeability coefficient of the sealing material, and can avoid the damage of the pressure sensor caused by the sudden rupture of a sealing material sample under the action of high pressure.
Drawings
FIG. 1 is a schematic structural diagram of a test apparatus in an embodiment;
FIG. 2 is a top surface of the porous plate;
FIG. 3 is a lower surface of the air-permeable porous plate;
the reference numbers in the figures indicate: the device comprises an upper device plate 1, a lower device plate 2, connecting bolts 3, a high-pressure air inlet 4, a low-pressure air outlet 5, a high-pressure chamber 6, a low-pressure chamber 7, a sealing material sample 8, filter paper 9, a breathable porous plate 10, small holes 101, a groove 102, a flange 103, a sealing rubber block 11, a clamp 12, a shaft sleeve 13, colored liquid drops 14, an air pipe 15 and a graduated scale 16.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
Examples
An apparatus for testing the permeability of a sealing material to high pressure gas in a stretched state, as shown in fig. 1, comprising: a sealing box for placing a sealing material sample 8; a stretching mechanism for stretching the sealing material sample 8; a permeated gas measuring mechanism for measuring the gas permeation coefficient of the sealing material sample 8;
the stretching mechanism is clamped at two ends of the sealing material sample 8, the permeated gas measuring mechanism comprises a gas inlet unit and a gas receiving unit which are respectively positioned on two sides of the sealing material sample 8, and the gas receiving unit is provided with a signal assembly for monitoring gas.
The seal box comprises an upper device plate 1 and a lower device plate 2 which are connected by a connecting bolt 3, and a seal material sample 8 is located between the upper device plate 1 and the lower device plate 2. The high-pressure chamber 6 and the low-pressure chamber 7 are also located within the spatial extent of the capsule. The volume of the high pressure chamber 6 should be greater than 25ml to reduce the pressure loss of the high pressure chamber 6 during the test; at the same time, the volume of the low-pressure chamber 7 is reduced as much as possible, which is helpful for increasing the change degree of the low-pressure side pressure, so that the test instrument can more sensitively measure the result. The sealing rubber block 11 is also arranged in the sealing box, and the sealing rubber block 11 is positioned on the surface of the sealing material sample 8. The sealing box can be guaranteed to be isolated from the outside air under the action of different tensile loads.
The stretching mechanism comprises a clamp 12 and a shaft sleeve 13 which are connected with each other, the clamp 12 is fixed with two ends of the sealing material sample 8 through screws, and the shaft sleeve 13 is connected with a universal testing machine.
The gas entering unit comprises a high-pressure gas inlet 4 and a high-pressure chamber 6, one end of the gas inlet 4 is connected with the high-pressure chamber 6, the other end of the gas inlet 4 is connected with a high-pressure gas bottle, one end of the high-pressure chamber 6 is connected with the high-pressure chamber 6, and the other end of the high-pressure chamber is abutted to a sealing material sample 8. The gas receiving unit further comprises a low-pressure chamber 7 and a low-pressure gas outlet 5, one end of the low-pressure chamber 7 is connected with the low-pressure gas outlet 5, the other end of the low-pressure chamber 7 is abutted to the sealing material sample 8, one end of the low-pressure gas outlet 5 is connected with the low-pressure chamber 7, and the other end of the low-pressure gas outlet is connected with the signal assembly.
A filter paper 9 and a porous plate 10 are provided between the low-pressure chamber 7 and the sealing material sample 8, the filter paper 9 and the sealing material sample 8 being in contact with each other, and the porous plate 10 and the low-pressure chamber 7 being in contact with each other. The strength of the porous plate 10 should be checked according to the actual conditions of the test to ensure that the sealing material sample 8 is not damaged by pressure penetration depending on the support of the porous plate 10.
As shown in fig. 2-3, the air-permeable porous plate 10 is provided with through holes 101 along the thickness direction, a groove 102 communicating with the holes 101 is radially provided on the surface of the air-permeable porous plate 10 close to the sealing material sample 8, and a flange 103 is provided on the periphery of the surface of the air-permeable porous plate 10 far from the sealing material sample 8. The through small holes 101 can ensure that the low-pressure chamber 7 is consistent with the air pressure of the sealing material sample 8, the grooves 102 can be communicated with the small holes 101 along the line to avoid the situation that part of the small holes 101 are blocked, and the flanges 103 can ensure that the lower surface of the air-permeable porous plate 10 is easily communicated with the low-pressure chamber 7.
The signal component comprises an air pipe 15, a colored liquid drop 14 and a graduated scale 16; the air pipe 15 is connected with the air receiving unit, the colored liquid drops 14 are positioned in the air pipe 15, and the graduated scale 16 is positioned on the air pipe 15. The air pipe 15 is horizontally placed, the moving distance of the colored liquid drop 14 in the air pipe 15 is read by using the graduated scale 16, the moving distance of the colored liquid drop 14 at different moments is obtained, and the permeability coefficient of the sealing material sample 8 is obtained through calculation.
In this embodiment, the sealing material sample 8 is made of rubber, the porous plate 10 is made of metal, and the air tube 15 is made of teflon.
The application of the device for testing the high-pressure gas permeability of the sealing material in the stretching state is used for testing the high-pressure gas permeability of the sealing material in the stretching state, and comprises the following steps:
(1) preparation of a sealing material sample: manufacturing a sealing material sample 8 according to the size of the test device, and reserving the clamping length required by the stretching mechanism;
(2) and (3) sample tensile strain loading: starting a universal testing machine, and applying a preset tensile strain, such as 10%;
(3) and (3) sample installation: fixing the sealing material sample 8 in the sealing box;
(4) low-pressure chamber flushing: connecting a high-pressure pipeline of an external high-pressure gas cylinder to a low-pressure gas outlet 5, unscrewing a gas valve of the gas cylinder, then unscrewing a pressure reducing valve to adjust the pressure to a proper value, flushing a low-pressure chamber 7, and discharging original air as much as possible;
(5) high-pressure chamber flushing: the high-pressure chamber 6 is flushed by the steps to ensure that the sealing box is completely sealed;
(6) introducing high-pressure gas: high-pressure gas is injected into the high-pressure chamber 6 through the high-pressure gas inlet 4 to a preset value, such as 10 MPa;
(7) the test was started: starting a permeating gas measuring mechanism, reading the initial reading of the colored liquid drops 14 in the gas pipe 15, recording the indoor temperature, reading the scales of the colored liquid drops 14 and the indoor temperature every 1 hour, and finishing the test after the data of the colored liquid drops 14 are stable in change and continue to be read for a period of time;
(8) and (3) test results: the pressure difference between the inside and the outside of the sealed case is balanced, the sample is taken out, and the moving distance of the colored liquid droplet 14 in the gas pipe 15 is converted into the volume of the gas which penetrates the sealing material sample 8 from the high pressure chamber 6 into the low pressure chamber 7, thereby calculating the gas permeability coefficient of the sealing material sample 8.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. An apparatus for testing the permeability of a sealing material to high pressure gas in a stretched state, the apparatus comprising:
a sealing box for placing a sealing material sample (8);
a stretching mechanism for stretching the sealing material sample (8);
a permeated gas measuring mechanism for testing the gas permeation coefficient of the sealing material sample (8);
the stretching mechanism is clamped at two ends of the sealing material sample (8), the permeated gas measuring mechanism comprises a gas inlet unit and a gas receiving unit which are respectively positioned on two sides of the sealing material sample (8), and the gas receiving unit is provided with a signal assembly for monitoring gas.
2. The device for testing the high-pressure gas permeability of the sealing material in a stretched state according to claim 1, wherein the gas inlet unit comprises a high-pressure gas inlet (4) and a high-pressure chamber (6), the gas inlet (4) is connected with a high-pressure gas cylinder, and the high-pressure chamber (6) is abutted with the sealing material sample (8).
3. The device for testing the high-pressure gas permeability of a sealing material in a stretched state according to claim 1, wherein the gas receiving unit further comprises a low-pressure chamber (7) and a low-pressure gas outlet (5), the low-pressure chamber (7) is abutted against the sealing material sample (8), and the low-pressure gas outlet (5) is connected with a signal assembly.
4. The device for testing the permeability of the sealing material under tension to high pressure gas according to claim 3, wherein a filter paper (9) and a gas-permeable porous plate (10) are disposed between the low pressure chamber (7) and the sealing material sample (8) and abut against each other, the filter paper (9) abuts against the sealing material sample (8), and the gas-permeable porous plate (10) abuts against the low pressure chamber (7).
5. The device for testing the permeability of the sealing material under high pressure in the stretched state according to claim 4, wherein the air-permeable porous plate (10) is provided with through small holes (101) along the thickness direction, one surface of the air-permeable porous plate (10) close to the sealing material sample (8) is provided with a groove (102) communicated with the small holes (101) along the radial direction, and the periphery of one surface of the air-permeable porous plate (10) far away from the sealing material sample (8) is provided with a flange (103).
6. The device for testing the high-pressure gas permeability of the sealing material in the stretched state according to claim 1, wherein the signal assembly comprises an air pipe (15), a colored liquid drop (14) and a graduated scale (16); the air pipe (15) is connected with the air receiving unit, the colored liquid drops (14) are positioned in the air pipe (15), and the graduated scale (16) is positioned on the air pipe (15).
7. The apparatus for testing the permeability of a sealing material under tension to high pressure gas according to claim 1, wherein the sealing box comprises an upper apparatus plate (1) and a lower apparatus plate (2) which are connected by a connecting bolt (3), and the sealing material sample (8) is located between the upper apparatus plate (1) and the lower apparatus plate (2).
8. The device for testing the permeability of the sealing material under the high pressure gas in the stretching state according to claim 7, characterized in that a sealing rubber block (11) is further arranged in the sealing box, and the sealing rubber block (11) is positioned on the surface of the sealing material sample (8).
9. The device for testing the permeability of the sealing material under the high pressure gas in the stretching state according to claim 1, wherein the stretching mechanism comprises a clamp (12) and a shaft sleeve (13) which are connected with each other, the clamp (12) is fixed with two ends of the sealing material sample (8) through screws, and the shaft sleeve (13) is connected with a universal tester.
10. Use of an apparatus for testing the high-pressure gas permeability of a sealing material in a stretched state according to any one of claims 1 to 9 for testing the high-pressure gas permeability of a sealing material in a stretched state, comprising the steps of:
(1) preparation of a sealing material sample: manufacturing a sealing material sample (8) according to the size of the test device, and reserving the clamping length required by the stretching mechanism;
(2) and (3) sample tensile strain loading: starting a universal testing machine, and applying a preset tensile strain;
(3) and (3) sample installation: fixing a sealing material sample (8) in a sealing box;
(4) low-pressure chamber flushing: connecting a high-pressure pipeline of an external high-pressure gas cylinder to a low-pressure gas outlet (5) and flushing a low-pressure chamber (7);
(5) high-pressure chamber flushing: the high-pressure chamber (6) is washed in the same steps to ensure that the sealing box is completely sealed;
(6) introducing high-pressure gas: high-pressure gas is injected into the high-pressure chamber (6) to a preset value through the high-pressure gas inlet (4);
(7) the test was started: starting a permeating gas measuring mechanism, reading the initial reading of the colored liquid drop (14) in the gas pipe (15), recording the indoor temperature, reading the scale of the colored liquid drop (14) and the indoor temperature every 1 hour, and ending the test after the data of the colored liquid drop (14) is stable in change and continues to be read for a period of time;
(8) and (3) test results: the pressure difference between the inside and the outside of the sealed box is balanced, the sample is taken out, the moving distance of the colored liquid drop (14) in the gas pipe (15) is converted into the volume of gas which penetrates through the sealed material sample (8) from the high-pressure chamber (6) and enters the low-pressure chamber (7), and the gas permeability coefficient of the sealed material sample (8) is calculated.
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| CN118032619A (en) * | 2024-04-15 | 2024-05-14 | 中国电建集团西北勘测设计研究院有限公司 | Air tightness testing device and method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050953A (en) * | 1989-05-10 | 1991-04-24 | 雷伊化学公司 | Reduce the equipment and the method for the polyolefin insulation fault rupture of cable |
| CN101158469A (en) * | 2007-11-06 | 2008-04-09 | 东北大学 | Sectional type porous ceramic dielectric gas fuel combusting device |
| CN101498648A (en) * | 2009-01-14 | 2009-08-05 | 北京科技大学 | Multifunctional in-situ electro-chemical measuring apparatus for tensile test |
| CN101566552A (en) * | 2009-06-09 | 2009-10-28 | 西南交通大学 | Anti-penetration performance testing device for waterproof membrane |
| CN101664650A (en) * | 2008-09-01 | 2010-03-10 | 华东电力试验研究院有限公司 | Method and device for dissolving gas in oil |
| CN101963574A (en) * | 2010-09-21 | 2011-02-02 | 武汉科技大学 | In situ corrosion electrochemical measurement device under the action of stretching stress |
| WO2011163278A2 (en) * | 2010-06-21 | 2011-12-29 | The Regents Of The University Of California | High pressure sensors for detecting membrane fouling |
| CN102323308A (en) * | 2011-06-14 | 2012-01-18 | 北京科技大学 | Device and method for researching hydrogen permeation behavior of metal subjected to dead-load pulling stress in gaseous medium |
| CN104142271A (en) * | 2014-06-06 | 2014-11-12 | 四川材料与工艺研究所 | Test device for testing tensile property of material in high-temperature high-pressure gas |
| CN108231224A (en) * | 2018-01-17 | 2018-06-29 | 中国科学院上海应用物理研究所 | A kind of analogy method of nuclear material in molten salt reactor |
| CN112179543A (en) * | 2020-10-09 | 2021-01-05 | 中山大学 | Device for measuring stress change of soil body after grouting |
-
2021
- 2021-07-14 CN CN202110793545.2A patent/CN113533166A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050953A (en) * | 1989-05-10 | 1991-04-24 | 雷伊化学公司 | Reduce the equipment and the method for the polyolefin insulation fault rupture of cable |
| CN101158469A (en) * | 2007-11-06 | 2008-04-09 | 东北大学 | Sectional type porous ceramic dielectric gas fuel combusting device |
| CN101664650A (en) * | 2008-09-01 | 2010-03-10 | 华东电力试验研究院有限公司 | Method and device for dissolving gas in oil |
| CN101498648A (en) * | 2009-01-14 | 2009-08-05 | 北京科技大学 | Multifunctional in-situ electro-chemical measuring apparatus for tensile test |
| CN101566552A (en) * | 2009-06-09 | 2009-10-28 | 西南交通大学 | Anti-penetration performance testing device for waterproof membrane |
| WO2011163278A2 (en) * | 2010-06-21 | 2011-12-29 | The Regents Of The University Of California | High pressure sensors for detecting membrane fouling |
| CN101963574A (en) * | 2010-09-21 | 2011-02-02 | 武汉科技大学 | In situ corrosion electrochemical measurement device under the action of stretching stress |
| CN102323308A (en) * | 2011-06-14 | 2012-01-18 | 北京科技大学 | Device and method for researching hydrogen permeation behavior of metal subjected to dead-load pulling stress in gaseous medium |
| CN104142271A (en) * | 2014-06-06 | 2014-11-12 | 四川材料与工艺研究所 | Test device for testing tensile property of material in high-temperature high-pressure gas |
| CN108231224A (en) * | 2018-01-17 | 2018-06-29 | 中国科学院上海应用物理研究所 | A kind of analogy method of nuclear material in molten salt reactor |
| CN112179543A (en) * | 2020-10-09 | 2021-01-05 | 中山大学 | Device for measuring stress change of soil body after grouting |
Non-Patent Citations (1)
| Title |
|---|
| 周瑜: "压气储能内衬洞室高分子密封层的气密与力学特性", 《岩石力学与工程学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118032619A (en) * | 2024-04-15 | 2024-05-14 | 中国电建集团西北勘测设计研究院有限公司 | Air tightness testing device and method |
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