CN109655372A - A kind of PdO getter inspiratory capacity test device and method - Google Patents
A kind of PdO getter inspiratory capacity test device and method Download PDFInfo
- Publication number
- CN109655372A CN109655372A CN201811544404.1A CN201811544404A CN109655372A CN 109655372 A CN109655372 A CN 109655372A CN 201811544404 A CN201811544404 A CN 201811544404A CN 109655372 A CN109655372 A CN 109655372A
- Authority
- CN
- China
- Prior art keywords
- valve
- getter
- pdo
- chamber
- pressure
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N7/04—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by absorption or adsorption alone
Abstract
The present invention provides a kind of PdO getter inspiratory capacity test device and methods, it is capable of the inspiratory capacity of validity test low-temperature (low temperature) vessel interlayer PdO getter, principle is simple and convenient to operate, data are reliable, and may be implemented to the isothermal measurement of PdO getter inspiratory capacity.The device of the invention reduces the uncertainty of test by each cavity volume of static expanding method precise measurement；Pressure is measured by magnetic suspension rotor gauge and Capacitance Diaphragm Gauge, obtains high-precision gas flow and balance pressure；The H generated using molecular sieve removal2O avoids its interference to test result.
Description
Technical field
The invention belongs to vacuum acquirement and maintain technical field, and in particular to a kind of PdO getter inspiratory capacity test device
And method.
Background technique
The acquisition of laminated vacuum and maintenance are extremely important in low-temperature (low temperature) vessel, and the influence to insulation effect is very big.Vacuum interlayer
Interior residual gas is mainly H2, CO, CH4 and Ar, wherein H2Average content reach 80.93%, and with the change of standing time
It is long, H2Partial pressure increasing always.It is important for effectively keeping the vacuum degree of interlayer space to have that getter is set in interlayer
Effect, the vacuum life of interlayer is heavily dependent on the characteristic and charge weight of getter.Existing low-temperature (low temperature) vessel interlayer
Molecular sieve and active carbon are often used as getter, can effectively maintain vacuum, but they are to H2Adsorption capacity it is poor；For
H2The higher problem of partial pressure effectively extracts H using the method for placing PdO getter at present2, the PdO getter of different inspiratory capacities
Product extracts H2Effect it is different, thus need to test its inspiratory capacity.Existing PdO getter inspiratory capacity test device test
Uncertainty is big, pressure measurement is inaccurate, and the precision of amounts of hydrogen and balance pressure is lower, and often generates in testing
H2O interferes test result.
Summary of the invention
The present invention provides a kind of PdO getter inspiratory capacity test device and methods, being capable of validity test low-temperature (low temperature) vessel folder
The layer inspiratory capacity of PdO getter, principle is simple and convenient to operate, data are reliable, and may be implemented to PdO getter air-breathing
Measure isothermal measurement.
To achieve the above object, a kind of PdO getter inspiratory capacity test device of the invention, including gas distributing chamber, air exhauster
Group, gas source and air-breathing chamber；
Wherein gas distributing chamber is connected by being provided with the pipeline of valve B with pumping unit；By be provided with the pipeline of valve C with
Gas source is connected, and the pipeline by being provided with valve D is connected with air-breathing chamber；Capacitance Diaphragm Gauge, capacitor are also connected in gas distributing chamber
Film is advised for measuring the indoor pressure of distribution；
Gas source is the gas cylinder equipped with hydrogen, is used for gas distributing chamber's distribution；
Air-breathing chamber includes reaction chamber and auxiliary pumping room, wherein reaction chamber by be provided with the pipeline of valve E respectively with valve D
Place pipeline is connected to auxiliary pumping room, and reaction chamber is for holding PdO getter, and reaction chamber is by being provided with the piping connection of valve F
There is magnetic suspension rotor gauge, magnetic suspension rotor gauge reacts indoor pressure for measuring；Auxiliary pumping interior is placed with molecular sieve, and molecular sieve is used
The H generated after removing PdO getter air-breathing2O。
Wherein, distribution cell structure is cylinder.
Wherein, the pumping unit includes mechanical pump and molecular pump, and mechanical pump is by being provided with valve A, pipeline and dividing
Son pump is connected, molecular pump, by being provided with valve B, pipeline and gas distributing chamber, connecting.
Wherein, the gas distributing chamber is made of stainless steel material.
Wherein, the air-breathing chamber is made of stainless steel material.
A kind of PdO getter air-breathing weight testing method of the invention is included the following steps: using above-mentioned test device
Step 1, gas distributing chamber, reaction chamber and the auxiliary volume for taking out room are measured by static expanding method；
Step 2, PdO getter to be tested is put into reaction chamber, opens all valves in addition to valve C, start air exhauster
Group vacuumizes whole device；
Step 3, after the vacuum degree of Capacitance Diaphragm Gauge detection reaches setting value, valve E is closed, molecular sieve is heated
Activationary temperature is reached, while continuing to be evacuated, the gas that removal molecular sieve has adsorbed；
Step 4, so that it is naturally cooled to environment temperature after completing the activation of molecular sieve, open valve E, while continuing to take out
Gas evacuates degasification to PdO getter, after completing degassing procedure, closes the valve B (4) and valve D of pumping unit；
Step 5, valve C is opened, valve C is closed after the hydrogen of set amount is filled with to gas distributing chamber, records the inflation of gas distributing chamber
Pressure, and at this time then it is anti-to open connection as reaction chamber and the auxiliary initial pressure for taking out room for reaction chamber and the auxiliary pressure for taking out room
The valve D and valve E for answering room, adsorb hydrogen by PdO getter, and after distribution chamber pressure is stablized, record is at this time in gas distributing chamber
Pressure balances pressure as air-breathing, and the gas distributing chamber obtained based on step 1, reaction chamber and the auxiliary volume calculations for taking out room are obtained accordingly
Adsorbance；The wherein inspiratory capacity Q of unit mass getter are as follows:
Wherein, p0For the blowing pressure of gas distributing chamber 6, p1For reaction chamber and the auxiliary initial pressure for taking out room, pEFor air-breathing balance pressure
Power, VGFor the volume of gas distributing chamber, VR1And VR2Respectively reaction chamber and the auxiliary volume for taking out room, m are the quality of tested PdO getter.
It further, further include step 6, step 6 are as follows: turn off valve D, repeat step 5 more than twice, obtain two or more
The corresponding points of adsorbance and balance pressure draw out the adsorption isobar of PdO getter by each corresponding points.
The utility model has the advantages that
The device of the invention reduces the uncertainty of test by each cavity volume of static expanding method precise measurement；Pass through
Magnetic suspension rotor gauge and Capacitance Diaphragm Gauge measure pressure, obtain high-precision gas flow and balance pressure；It is removed using molecular sieve
The H of generation2O avoids its interference to test result.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Wherein, 1- mechanical pump；2- valve A, 4- valve B, 7- valve C, 9- valve D, 10- valve E, 12- valve F；3- points
Son pump；5- Capacitance Diaphragm Gauge；6- gas distributing chamber；8- gas source；11- reaction chamber；13- magnetic suspension rotor gauge；The auxiliary pumping room 14-.
Fig. 2 is PdO of embodiment of the present invention getter adsorption isotherm schematic diagram.
Specific embodiment
With reference to the accompanying drawing, develop simultaneously embodiment, and the present invention will be described in further detail.
PdO inspiratory capacity test device provided in this embodiment is mainly used for vacuum tank interlayer PdO getter inspiratory capacity
Test.The structural schematic diagram of device is as shown in Figure 1, include gas distributing chamber 6, pumping unit, gas source 8 and air-breathing chamber.
Wherein gas distributing chamber 6 is connected by being provided with the pipeline of valve B4 with pumping unit；By the pipe for being provided with valve C7
Road is connected with gas source 8, and the pipeline by being provided with valve D9 is connected with air-breathing chamber；Capacitor thin film is also connected in gas distributing chamber 6
Rule 5, Capacitance Diaphragm Gauge 5 are used to measure the pressure of gas distributing chamber 6；Gas distributing chamber 6 is made of stainless steel material, can be designed as cylinder
Structure realizes distribution more evenly.
Pumping unit includes mechanical pump 1 and molecular pump 3, and mechanical pump 1 is by being provided with the pipeline and 3 phase of molecular pump of valve A2
Even, molecular pump 3 is connect by being provided with the pipeline of valve B4 with gas distributing chamber 6, and mechanical pump 1 and molecular pump 3 are used for whole device
It is vacuumized.
Gas source 8 is the gas cylinder equipped with hydrogen, is used for 6 air inlet of gas distributing chamber.
Air-breathing chamber includes reaction chamber 11 and auxiliary pumping room 14, and reaction chamber 11 and auxiliary pumping room 14 are all made of stainless steel material system
Make, wherein reaction chamber 11 is connected to pipeline where valve D9 and auxiliary pumping room 14 respectively by being provided with the pipeline of valve E10, is reacted
Room 11 is for holding PdO getter, and reaction chamber 11 is by being provided with the piping connection magnetic suspension rotor gauge 13 of valve F12, magnetcisuspension
Floating rotor gauge 13 is used to measure the pressure in reaction chamber 11；Molecular sieve is placed in auxiliary pumping room 14, molecular sieve is for removing PdO air-breathing
The H generated after agent air-breathing2O。
Gas distributing chamber 6, reaction chamber 11 and the auxiliary volume for taking out room 14 are measured by static expanding method first when device works, so
Make device be in high vacuum environment by being evacuated unit afterwards, heat activation is carried out to molecular sieve later, removes the gas adsorbed
Body；Evacuation degasification is carried out to PdO getter later, it is made to have gettering ability；Then one is filled with to gas distributing chamber 6 by gas source 8
Then quantitative hydrogen opens the valve D9 and valve E10 of connection reaction chamber 11, makes hydrogen by the PdO air-breathing in reaction chamber 11
Agent absorption；Continue distribution, air-breathing after reaching balance, to obtain a series of adsorbances and balance the corresponding points of pressure, Jin Erhui
Produce the adsorption isotherm of PdO getter.Specifically, the workflow of apparatus of the present invention includes the following steps:
Step 1, gas distributing chamber 6, reaction chamber 11 and the auxiliary volume for taking out room 14 are measured by static expanding method；
Step 2, PdO getter to be tested is put into reaction chamber 11, connects test device, open the institute in addition to valve C7
There is valve, opens mechanical pump 1 and molecular pump 3 vacuumizes whole device；
Step 3, when the vacuum degree of the detection of Capacitance Diaphragm Gauge 5 is less than 1 × 10-2After Pa, valve E10 is closed, to auxiliary pumping room 14
Interior molecular sieve carries out heating and reaches activationary temperature, while continuing to be evacuated, the gas that removal molecular sieve has adsorbed；
Step 4, so that it is naturally cooled to environment temperature after completing the activation of molecular sieve, open valve E10, while continuing to take out
Gas evacuates degasification to PdO getter, after completing degassing procedure, closes the valve B4 and valve D9 of pumping unit；
Step 5, it opens and closes valve C7 after valve C7 is filled with the hydrogen of set amount to gas distributing chamber 6, record gas distributing chamber 6 fills
Atmospheric pressure, and reaction chamber 11 and the auxiliary pressure for taking out room 14 are as reaction chamber 11 and the auxiliary initial pressure for taking out room 14 at this time, then
The valve D9 and valve E10 for opening connection reaction chamber 11, adsorb hydrogen by PdO getter, after 6 pressure of gas distributing chamber is stablized, note
The pressure recorded in gas distributing chamber 6 at this time balances pressure as air-breathing, obtains gas distributing chamber 6, reaction chamber 11 and auxiliary pumping room based on step 1
14 volume calculations obtain corresponding adsorbance；
The inspiratory capacity Q of unit mass getter is calculated as follows:
Wherein, p0For the blowing pressure of gas distributing chamber 6, p1For reaction chamber 11 and the auxiliary initial pressure for taking out room 14, pEIt is flat for air-breathing
Weigh pressure, VGFor the volume of gas distributing chamber 6, VR1And VR2Respectively reaction chamber 11 and the auxiliary volume for taking out room 14, m are tested PdO air-breathing
The quality of agent.
Step 6, valve D9 is closed, repeats step 5 more than twice, it is corresponding with balance pressure to obtain more than two adsorbances
Point draws out the adsorption isotherm of PdO getter by each corresponding points.
Total air-breathing amountWherein QiFor the inspiratory capacity for the unit mass getter that i-th measurement obtains, i=
1,2 ... n, n are overall measurement number, and one group of experimental data is as shown in table 1:
1 experimental data of table
Total air-breathing amount when measuring every time is horizontal axis as the longitudinal axis, balance pressure, is depicted shown in adsorption isotherm Fig. 2.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of PdO getter inspiratory capacity test device, which is characterized in that including gas distributing chamber (6), pumping unit, gas source (8) with
And air-breathing chamber；
Wherein gas distributing chamber (6) is connected by being provided with the pipeline of valve B (4) with pumping unit；By being provided with valve C's (7)
Pipeline is connected with gas source (8), and the pipeline by being provided with valve D (9) is connected with air-breathing chamber；Gas distributing chamber is also connected on (6)
Capacitance Diaphragm Gauge (5), Capacitance Diaphragm Gauge (5) are used to measure the pressure in gas distributing chamber (6)；
Gas source (8) is the gas cylinder equipped with hydrogen, is used for gas distributing chamber (6) distribution；
Air-breathing chamber includes reaction chamber (11) and auxiliary pumping room (14), and wherein reaction chamber (11) is by being provided with the pipes of (10) valve E
Road is connected to pipeline where valve D (9) and auxiliary pumping room (14) respectively, and reaction chamber (11) is for holding PdO getter, reaction chamber
(11) have magnetic suspension rotor gauge (13) by being provided with the piping connection of valve F (12), magnetic suspension rotor gauge (13) is for measuring
Pressure in reaction chamber (11)；It is placed with molecular sieve in auxiliary pumping room (14), molecular sieve, which is used to remove, to be generated after PdO getter air-breathing
H2O。
2. PdO getter inspiratory capacity test device according to claim 1, which is characterized in that gas distributing chamber's (6) structure is circle
Cylindricality.
3. PdO getter inspiratory capacity test device according to claim 1, which is characterized in that the pumping unit includes
Mechanical pump (1) and molecular pump (3), mechanical pump (1) are connected by being provided with the pipeline of valve A (2) with molecular pump (3), molecular pump
(3) it is connect by being provided with the pipeline of valve B (4) with gas distributing chamber (6).
4. high-pressure air source device according to claim 1, which is characterized in that the gas distributing chamber (6) uses stainless steel material
Production.
5. high-pressure air source device according to claim 1, which is characterized in that the air-breathing chamber uses stainless steel material system
Make.
6. a kind of PdO getter air-breathing weight testing method, using test device as described in claim 1, which is characterized in that packet
Include following steps:
Step 1, pass through static expanding method measurement gas distributing chamber (6), reaction chamber (11) and the auxiliary volume for taking out room (14)；
Step 2, PdO getter to be tested is put into reaction chamber (11), opens all valves in addition to valve C (7), starting pumping
Unit vacuumizes whole device；
Step 3, it after the vacuum degree of Capacitance Diaphragm Gauge (5) detection reaches setting value, closes valve E (10), molecular sieve is carried out
Heating reaches activationary temperature, while continuing to be evacuated, the gas that removal molecular sieve has adsorbed；
Step 4, so that it is naturally cooled to environment temperature after completing the activation of molecular sieve, open valve E (10), while continuing to take out
Gas evacuates degasification to PdO getter, after completing degassing procedure, closes the valve B (4) and valve D (9) of pumping unit；
Step 5, valve C (7) are opened, closes valve C (7) after being filled with the hydrogen of set amount to gas distributing chamber (6), record gas distributing chamber
(6) the blowing pressure, and at this time reaction chamber (11) and it is auxiliary take out room (14) pressure as reaction chamber (11) and auxiliary pumping room (14)
Initial pressure, then open connection reaction chamber (11) valve D (9) and valve E (10), adsorb hydrogen by PdO getter,
After gas distributing chamber's (6) pressure is stablized, the pressure recorded in gas distributing chamber (6) at this time balances pressure as air-breathing, is obtained based on step 1
Gas distributing chamber (6), reaction chamber (11) and the auxiliary volume calculations for taking out room (14) obtain corresponding adsorbance；Wherein unit mass air-breathing
The inspiratory capacity Q of agent are as follows:
Wherein, p0For the blowing pressure of gas distributing chamber 6, p1For reaction chamber (11) and the auxiliary initial pressure for taking out room (14), pEIt is flat for air-breathing
Weigh pressure, VGFor the volume of gas distributing chamber (6), VR1And VR2Respectively reaction chamber (11) and the auxiliary volume for taking out room (14), m is tested
The quality of PdO getter.
7. PdO getter air-breathing weight testing method as claimed in claim 6, which is characterized in that further include step 6, step 6
Are as follows: turn off valve D (9), repeat step 5 more than twice, obtains more than two adsorbances and balance the corresponding points of pressure, by each
A corresponding points draw out the adsorption isobar of PdO getter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544404.1A CN109655372A (en) | 2018-12-17 | 2018-12-17 | A kind of PdO getter inspiratory capacity test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544404.1A CN109655372A (en) | 2018-12-17 | 2018-12-17 | A kind of PdO getter inspiratory capacity test device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109655372A true CN109655372A (en) | 2019-04-19 |
Family
ID=66114682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811544404.1A Pending CN109655372A (en) | 2018-12-17 | 2018-12-17 | A kind of PdO getter inspiratory capacity test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109655372A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907151A (en) * | 2019-10-23 | 2020-03-24 | 张家港富瑞特种装备股份有限公司 | Method for measuring and calculating relationship between vacuum degree of low-temperature gas cylinder and daily evaporation rate and adsorption capacity |
| CN113295575A (en) * | 2021-05-24 | 2021-08-24 | 合肥工业大学 | Getter air suction performance test integrated device based on differential pressure method |
| CN113917080A (en) * | 2021-10-08 | 2022-01-11 | 北京航空航天大学 | Molecular sieve attenuation performance test equipment |
| CN113917080B (en) * | 2021-10-08 | 2024-04-19 | 北京航空航天大学 | Molecular sieve decay performance test equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517695A (en) * | 2003-01-10 | 2004-08-04 | �廪��ѧ | Method and equipment for measuring amount of gas adsorbed by powder |
| CN1557529A (en) * | 2004-02-05 | 2004-12-29 | 北京科技大学 | Pressure swing adsorption oxygen generating unit of telescopic absorption device structure |
| CN101498642A (en) * | 2009-03-12 | 2009-08-05 | 四川亚联高科技股份有限公司 | Accurate tester for sorbent and method thereof |
| CN105067070A (en) * | 2015-07-16 | 2015-11-18 | 兰州空间技术物理研究所 | Method for measuring volume ratio of vacuum container in low-pressure environment |
| CN106769638A (en) * | 2017-01-23 | 2017-05-31 | 西北核技术研究所 | A kind of method and device that molecular sieve adsorption amount is determined based on gas consumption |
| CN107228810A (en) * | 2017-06-19 | 2017-10-03 | 金华职业技术学院 | A kind of device of acetylene absorption measurement |
| CN107340204A (en) * | 2017-06-19 | 2017-11-10 | 金华职业技术学院 | Multiple isothermal method can be measured during a complete plenum |
| CN107364832A (en) * | 2017-07-26 | 2017-11-21 | 深圳市海格金谷工业科技有限公司 | A kind of low temperature hydrogen purification devices and control method |
-
2018
- 2018-12-17 CN CN201811544404.1A patent/CN109655372A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517695A (en) * | 2003-01-10 | 2004-08-04 | �廪��ѧ | Method and equipment for measuring amount of gas adsorbed by powder |
| CN1557529A (en) * | 2004-02-05 | 2004-12-29 | 北京科技大学 | Pressure swing adsorption oxygen generating unit of telescopic absorption device structure |
| CN101498642A (en) * | 2009-03-12 | 2009-08-05 | 四川亚联高科技股份有限公司 | Accurate tester for sorbent and method thereof |
| CN105067070A (en) * | 2015-07-16 | 2015-11-18 | 兰州空间技术物理研究所 | Method for measuring volume ratio of vacuum container in low-pressure environment |
| CN106769638A (en) * | 2017-01-23 | 2017-05-31 | 西北核技术研究所 | A kind of method and device that molecular sieve adsorption amount is determined based on gas consumption |
| CN107228810A (en) * | 2017-06-19 | 2017-10-03 | 金华职业技术学院 | A kind of device of acetylene absorption measurement |
| CN107340204A (en) * | 2017-06-19 | 2017-11-10 | 金华职业技术学院 | Multiple isothermal method can be measured during a complete plenum |
| CN107364832A (en) * | 2017-07-26 | 2017-11-21 | 深圳市海格金谷工业科技有限公司 | A kind of low temperature hydrogen purification devices and control method |
Non-Patent Citations (3)
| Title |
|---|
| 上海九〇一厂编: "《半导体材料硅》", 30 June 1971, 上海科学技术情报研究所出版 * |
| 张瑞年 等: "一种提高氧化钯氢吸附特性测试准确性的方法", 《真空与低温》 * |
| 谢斯卫: "高真空多层绝热低温容器内吸气剂的吸气特性研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907151A (en) * | 2019-10-23 | 2020-03-24 | 张家港富瑞特种装备股份有限公司 | Method for measuring and calculating relationship between vacuum degree of low-temperature gas cylinder and daily evaporation rate and adsorption capacity |
| CN110907151B (en) * | 2019-10-23 | 2021-09-03 | 张家港富瑞特种装备股份有限公司 | Method for measuring and calculating relationship between vacuum degree of low-temperature gas cylinder and daily evaporation rate and adsorption capacity |
| CN113295575A (en) * | 2021-05-24 | 2021-08-24 | 合肥工业大学 | Getter air suction performance test integrated device based on differential pressure method |
| CN113917080A (en) * | 2021-10-08 | 2022-01-11 | 北京航空航天大学 | Molecular sieve attenuation performance test equipment |
| CN113917080B (en) * | 2021-10-08 | 2024-04-19 | 北京航空航天大学 | Molecular sieve decay performance test equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108151961B (en) | Extreme high vacuum calibration device and method | |
| CN111208037B (en) | Method for measuring absolute adsorption quantity of rock sample and method for measuring isothermal adsorption curve of rock sample | |
| WO2020224632A1 (en) | Method for testing leakage performance of aerospace composite material member in low temperature environment | |
| CN101762435A (en) | Wide temperature zone hydrogen storage material low temperature hydrogen storage performance testing device | |
| CN109781579A (en) | A kind of hydrogen storage material cycle life auto testing instrument and test method | |
| CN209745750U (en) | Deformation-adsorption capacity synchronous testing device in gas adsorption process of coal body | |
| CN109655372A (en) | A kind of PdO getter inspiratory capacity test device and method | |
| CN102494741A (en) | Static sampling introduction device and method of calibrating pressure leak hole | |
| CN110095359A (en) | Material fatigue damage test method under high pressure hydrogen loading natural gas environment | |
| US20190033161A1 (en) | Leak hole leak rate detection device and method | |
| CN106197896A (en) | A kind of tube or inner liner air tightness detecting apparatus and determination of gas tightness method | |
| CN205958207U (en) | Tire tube or inner liner gas tightness survey device | |
| CN114034604B (en) | Hydrogen related material comprehensive reaction system and test method thereof | |
| CN103234860A (en) | Carbon dioxide adsorption isotherm precision testing method | |
| CN106525683A (en) | Thin film permeability measuring device and method | |
| CN103808458A (en) | Device and method for testing suction and vent quantity of vacuum gauge based on dynamic flow method | |
| CN104155425B (en) | A kind of method of high precision PCT tester and test alloy material storing hydrogen PCT | |
| CN110987291B (en) | Method for measuring and calculating relationship between vacuum degree of low-temperature gas cylinder and daily evaporation rate and adsorption capacity | |
| CN110455670B (en) | Pulverized coal gas desorption test device and method considering initial desorption | |
| CN203241324U (en) | Shale gas permeability determinator | |
| CN110553948A (en) | dynamic gas permeability testing device and method based on mass spectrometry | |
| CN101876617B (en) | Method for improving accuracy of hydrogen storage performance measurement by constant volume method | |
| CN206594002U (en) | A kind of hydrogen storage material, which is inhaled, puts hydrogen PCT curve testing devices | |
| CN103505980B (en) | One realizes and maintains pressure≤15 × 10 -13torr vacuum pumping method | |
| CN203100971U (en) | Built-in vacuum degree detecting device for vacuum insulation board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190419 |
|
| WD01 | Invention patent application deemed withdrawn after publication |