CN203502409U - Pressure chamber for tester with high temperature expansibility and permeability - Google Patents
Pressure chamber for tester with high temperature expansibility and permeability Download PDFInfo
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- CN203502409U CN203502409U CN201320659675.8U CN201320659675U CN203502409U CN 203502409 U CN203502409 U CN 203502409U CN 201320659675 U CN201320659675 U CN 201320659675U CN 203502409 U CN203502409 U CN 203502409U
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- upper cover
- pressure chamber
- base
- stainless steel
- steel piston
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- 230000035699 permeability Effects 0.000 title abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 36
- 239000010935 stainless steel Substances 0.000 claims abstract description 36
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229920001973 fluoroelastomer Polymers 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 5
- 238000009375 geological disposal Methods 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 3
- 239000002901 radioactive waste Substances 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 7
- 239000004927 clay Substances 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002927 high level radioactive waste Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model belongs to the research field of highly radioactive waste geological disposal experiments, and in particular relates to a pressure chamber for a tester with the high temperature expansibility and permeability. The pressure chamber is used for overcoming the shortcomings of large volume, heavy weight, inconvenience in operation and the like of an existing pressure chamber. The pressure chamber comprises a base, an upper cover arranged above the base, a sample ring arranged between the base and the upper cover, and a stainless steel piston arranged above the upper cover, wherein a water inlet channel connected with a water inlet pipe connector is arranged on one side surface of the lower part of the base; the sample ring is hollow and is internally provided with a test sample; a metal water-permeable plate is arranged on the test sample, the height of the top of the metal water-permeable plate is level to the height of the sample ring; a round groove is formed in the bottom of the upper cover, the sample ring is covered by the upper cover; a cylindrical hole is formed in the middle of the upper cover; the stainless steel piston is inserted into the hole, and the lower end of the stainless steel piston is contacted with the metal water-permeable plate above the test sample. Due to the adoption of the pressure chamber, the lightweight design is realized, and the expansibility can be accurately measured conveniently.
Description
Technical field
The utility model belongs to high-level waste geological disposal experimental study field, is specifically related to a kind of pressure chamber for high-temperature expansion and perviousness analyzer.
Background technology
The high radioactivity nuclear waste of China intends adopting the mode of the dark geological disposal of multibarrier (geologic medium belongs to the natural cover for defense, and refuse body, the gentle refunds underfill material of packing container etc. belongs to engineering barrier) to dispose.Padded coaming is as the important component part of disposing multibarrier system in storehouse, it is last road artificial barrier being filled between dedicated waste tanks and geologic body, playing the vital role such as engineering barrier, hydraulics barrier, chemical barrier, conduction and lost radioactive waste decay heat, is the effective guarantee of geological disposal storehouse safety and stability.By domestic and international research in recent years, the bentonitic clay that the smectite of take is principal ingredient is considered to the most suitable buffering backfilling material of high level radioactive waste repository.The underground water of disposing in the country rock of storehouse permeates to disposing in storehouse under the effect of high pressure groundwater flow, bentonitic clay is met water moisture absorption and is caused soil expansion distortion, forms in resistance barrier country rock underground water and infiltrates fast and dispose in storehouse and cause the artificial barrier that nuclein migration and radiation are spread.The performances such as therefore, the expansion of research bentonitic clay under various conditions especially high temperature, high hydraulic condition, infiltration are significant.
Microcomputer control high-temperature expansion and perviousness analyzer (Chinese patent ZL200920154214.9) are for studying different temperatures, different intake pressure, different exhaust conditions and the bentonitic bulging force of different compacted density and infiltration coefficient, realized the integrated of bulging force mensuration and osmotic coefficient investigating, Automatic Control, temperature, hydraulic pressure control scope are large, good stability.But there are some shortcomings in the pressure chamber that in use finds this equipment: volume, weight are large, inconvenient operation; Sealing means friction force is large, can not accurately measure bulging force; Water flowing out structure is unreasonable etc.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and a kind of pressure chamber for high-temperature expansion and perviousness analyzer is provided.
The technical scheme that realizes the utility model object is:
A pressure chamber for high-temperature expansion and perviousness analyzer, is characterized in that: comprise base, at the upper cover above base, in the sample ring between base and upper cover and be positioned at the stainless steel piston above upper cover; Described base lower side is provided with the water inlet duct being connected with admitting pipe joint; In the middle of described base top, be provided with two circular grooves, big groove is placed sample loop, places a metal porous disc in little groove, and described metal porous disc is placed in top, described water inlet duct; Described sample loop hollow, built-in test specimen, places a metal porous disc above described test specimen, and described metal porous disc overhead height is concordant with sample loop height; Circular groove is arranged at described upper cover bottom, covers on sample loop; There is cylindrical hole at described upper cover middle part, and in stainless steel piston patchhole and lower end contacts with the metal porous disc of test specimen top.
A kind of pressure chamber for high-temperature expansion and perviousness analyzer as above, wherein: described stainless steel piston middle part diameter is larger than bottom, between middle part outshot and upper cover, is provided with O-ring seal.
A kind of pressure chamber for high-temperature expansion and perviousness analyzer as above, wherein: on described stainless steel piston, cover has pressure transducer, described pressure transducer is fastening by bolt and upper cover, and pressure transducer bottom sensitive surface contacts with stainless steel piston middle part outshot.
A kind of pressure chamber for high-temperature expansion and perviousness analyzer as above, wherein: described stainless steel piston base and sidewall are provided with hole, base apertures communicates with areole, and areole communicates with the water outlet duct in upper cover, and described water outlet duct integral body is downward-sloping.
A kind of pressure chamber for high-temperature expansion and perviousness analyzer as above, wherein: the base apertures top of described stainless steel piston communicates with Temperature Humidity Sensor hole, Temperature Humidity Sensor is provided with Temperature Humidity Sensor in hole, and Temperature Humidity Sensor hole is positioned at top, water outlet duct.
A kind of pressure chamber for high-temperature expansion and perviousness analyzer as above, wherein: described sample loop bottom surface and base contact position and sample loop end face and upper cover contact position are respectively provided with the O-ring seal of an O type, O-ring seal adopts fluororubber.
A kind of pressure chamber for high-temperature expansion and perviousness analyzer as above, wherein: described base and upper cover are by bolted, and described admitting pipe joint is connected with water inlet system.
Effect of the present utility model is: it has realized light-weight design, adopts new sealing means and fastening means, and has improved position and the working method of pressure transducer and Temperature Humidity Sensor.Specific as follows:
(1) a kind of pressure chamber for high-temperature expansion and perviousness analyzer described in the utility model, use the mode of bolted to replace screw-tightened, and pressure chamber's main body becomes base and upper cover two parts from base, pressure chamber's body, upper cover three parts, the volume and weight of pressure chamber is all significantly reduced, simple to operation.
(2) improve the fixed form of pressure transducer, the pressure transducer that was originally hidden in upper cover inside has been secured by bolts in to upper tops, at pressure transducer, damaged when maybe needing to demarcate, examining and determine easy disassembly.
(3) pressure chamber of high-temperature expansion and perviousness analyzer realizes the sealing between piston and upper cover by the O-ring seal between jam-packed piston and piston hole wall, the bulging force of sample could pass to pressure transducer by piston after need to overcoming the friction force between O-ring seal and upper cover piston hole wall, this has not only caused inaccurate that bulging force measures, and also cannot be recorded to test initial stage sample bulging force progress curve hour simultaneously.Pressure chamber described in the utility model, improved the design of stainless steel piston, by the mode of piston press seal circle, realize the sealing between piston and upper cover, eliminated the friction between O-ring seal and upper cover piston hole wall, realize the accurate measurement of bulging force, and can access the Complete Curve of bulging force development.
(4) the pressure indoor temperature and humidity sensor hole of existing high-temperature expansion and perviousness analyzer and water outlet duct are positioned at the both sides of pressure chamber, the opposed design of tilting, lower openings is all pressed close to sample, the water that is penetrated into sample upper surface need to be filled ability outflow pressure chamber behind full these two holes, enter water outlet measuring system, this not only causes and cannot accurately measure the water yield, and makes Temperature Humidity Sensor long period of soaking in aqueous water, loses the function of measuring humiture.Water outlet duct, pressure chamber described in the utility model is positioned at the below in Temperature Humidity Sensor hole and is communicated with it, when not affecting temperature and humidity measurement, avoided the shunting of current direction Temperature Humidity Sensor hole, use measure of water more accurate, and guarantee that Temperature Humidity Sensor does not contact aqueous water.
(5) be for Accurate Determining aquifer yield equally, water outlet duct, pressure chamber described in the utility model is downward-sloping, the aqueous water that oozes out sample upper surface can enter out measuring system by water outlet duct as early as possible, the state of saturation that is conducive to Measurement accuracy aquifer yield and assessment sample, this is particularly important when the extremely low high compacting bentonitic clay sample of infiltration coefficient is tested.
Accompanying drawing explanation
The structural representation of a kind of pressure chamber for high-temperature expansion and perviousness analyzer that Fig. 1 provides for the utility model;
The work schematic diagram of a kind of pressure chamber for high-temperature expansion and perviousness analyzer that Fig. 2 provides for the utility model;
In figure: 1. base; 2. sample ring; 3. stainless steel piston; 4. upper cover; 5. duct intakes; 6. admitting pipe joint; 7. metal porous disc; 8. test specimen; 9. O-ring seal; 10. king-bolt; 12. pressure transducers; 13. stove bolts; 14. water outlet ducts; 15. Temperature Humidity Sensors; 16. water outlet measurement mechanisms; 17. water inlet systems; 18. motors.
Embodiment
A kind of pressure chamber for high-temperature expansion and perviousness analyzer the utility model being provided below in conjunction with drawings and Examples is further described.
As shown in Figure 1, a kind of pressure chamber for high-temperature expansion and perviousness analyzer, main part comprises base 1, at the upper cover 4 above base 1, in the sample ring 2 between base 1 and upper cover 4 and be positioned at the stainless steel piston 3 above upper cover 4, these ingredients adopt large, the corrosion resistant stainless steel of rigidity to make.Base 1 lower side is provided with into water duct 5, and water inlet duct 5 is connected with admitting pipe joint 6, and admitting pipe joint 6 is for connecting water inlet system 17; Base has two circular grooves in the middle of 1 top, and big groove is placed sample loop 2, places a metal porous disc 7 in little groove, and this metal porous disc 7 is placed in into 5 tops, water duct; Sample loop 2 hollows, be used for placing test specimen 8, test specimen 8 is placed a metal porous disc 7 above, and metal porous disc 7 overhead heights are highly concordant with sample loop 2, the bottom surface of sample loop 2 and end face respectively have the O-ring seal 9 of an O type, contact respectively with base 1 with upper cover 4; O-ring seal 9 adopts fluororubber to make, and high temperature resistant, good springiness, can bear certain crimp, and anti-sealing flows out from the gap of sample loop 2 and base 1 and upper cover 4; Base 1 is fastening by king-bolt 10 with upper cover 4, and circular groove is arranged at upper cover 4 bottoms, covers on sample loop 2; There is cylindrical hole at upper cover 4 middle parts, and stainless steel piston 3 inserts in this cylindrical hole and lower end contacts with metal porous disc 7; Stainless steel piston 3 middle part diameters are larger than bottom, by middle part outshot press seal circle 9, realize the sealing between stainless steel piston 3 and upper cover 4; Pressure transducer 12 is enclosed within on stainless steel piston 3, fastening by stove bolt 13 and upper cover 4, and its bottom sensitive surface contacts with stainless steel piston 3 middle part outshots; Stainless steel piston 3 bottoms and sidewall are provided with hole, and base apertures communicates with areole, and areole communicates with the interior water outlet of upper cover 4 duct 14, and water outlet duct 14 is whole downward-sloping; Stainless steel piston 3 base apertures tops communicate with Temperature Humidity Sensor hole, and Temperature Humidity Sensor hole is used for installing Temperature Humidity Sensor 15; Temperature Humidity Sensor hole is positioned at 14 tops, water outlet duct.
Fig. 2 is the work schematic diagram for the pressure chamber of high-temperature expansion and perviousness analyzer, the concrete operation steps of implementing is: first, compacting soil sample, in the situation that sample dry density and diameter have been determined, taking the soil of determining quality take and obtain highly the test specimen 8 as 10mm, the soil weighing up is put into sample ring 2, uses special mould, compressing on pressing machine.Sample ring 2 is put into the groove of base 1, selected the metal porous disc 7 of proper height to be placed on test specimen 8 tops, make metal porous disc 7 upper surfaces concordant with sample ring 2 upper surfaces.Sample ring 2 upper and lower surfaces are respectively put the O-ring seal 9 of a fluororubber O-type.Use king-bolt 10 fastening seats 1 and upper cover 4, compress the O-ring seal 9 of sample ring 2 upper and lower surfaces, anti-sealing flows out from sample ring 2 and the gap of base 1 and upper cover 4.Stainless steel piston 3 is inserted to the piston hole of upper cover 4, an O-ring seal 9 is placed in the below of stainless steel piston 3 middle part outshots, pressure transducer 12 is enclosed within on stainless steel piston 3, with stove bolt 13, pressure transducer 12 is tightened, sensitive surface contact stainless steel piston 3 upper surfaces of pressure transducer 12, press seal circle 9, prevents that the water that sees through test specimen 8 from flowing out from the gap of stainless steel pistons 3 and upper cover 4 simultaneously.Temperature Humidity Sensor 15 is inserted to Temperature Humidity Sensor hole, pressure chamber's installation.Pressure chamber is put into temperature control system, by admitting pipe joint 6, connect water inlet system 17, titting water outlet connects water outlet measurement mechanism 16, starts test.During on-test, temperature control system is set as to a certain steady temperature, the water pressure that applies 1MPa to water inlet system 17 by motor 18 is to pressure chamber's injection test water.Test specimen 8 in sample ring 2 is met water and is started to expand, and extruding stainless steel piston 3, passes to pressure transducer 12 by bulging force.The humidity for the treatment of test specimen 8 upper surfaces that record by Temperature Humidity Sensor 15 reaches more than 98%, and water outlet measurement mechanism 16 is when having collected and being recorded to stable aquifer yield, can think that test specimen 8 is saturated.By the inflow of seepage flow overtesting sample 8 transversal section in certain hour interval, according to Darcy's law, calculate the saturation permeability coefficient of sample; Then, regulate temperature control system rising temperature, obtain maximum swelling power and the saturation permeability coefficient of sample under another temperature conditions.The pressure chamber controlling in high-temperature expansion and perviousness analyzer (Chinese patent ZL200920154214.9) with microcomputer compares, the design of stainless steel piston 3 has been improved in improved pressure chamber described in this utility model, by the mode of stainless steel piston 3 press seal circles 9, realize the sealing of 4 of piston 3 and upper covers, eliminate the friction force between O-ring seal 9 and upper cover 4 piston hole walls, realized the accurate measurement of bulging force; Water outlet duct 14 is positioned at the below in Temperature Humidity Sensor hole and is communicated with it, has avoided current direction Temperature Humidity Sensor hole shunting when not affecting temperature and humidity measurement, uses measure of water more accurate, and guarantees that Temperature Humidity Sensor 15 does not contact aqueous water; Water outlet duct 14 is downward-sloping, the aqueous water that oozes out test specimen 8 upper surfaces can enter water outlet measurement mechanism 16 by water outlet duct 14 as early as possible, the state of saturation that is conducive to Measurement accuracy aquifer yield and assessment sample, this is particularly important when the extremely low high compacting bentonitic clay sample of infiltration coefficient is tested.
Claims (7)
1. for a pressure chamber for high-temperature expansion and perviousness analyzer, it is characterized in that: comprise base (1), be positioned at base (1) top upper cover (4), be positioned at the sample ring (2) between base (1) and upper cover (4) and be positioned at the stainless steel piston (3) above upper cover (4); Described base (1) lower side is provided with the water inlet duct (5) being connected with admitting pipe joint (6); In the middle of described base (1) top, be provided with two circular grooves, big groove is placed sample loop (2), places a metal porous disc (7) in little groove, and described metal porous disc (7) is placed in top, described water inlet duct (5); Described sample loop (2) hollow, built-in test specimen (8), described test specimen (8) is placed a metal porous disc (7) above, and described metal porous disc (7) overhead height is highly concordant with sample loop (2); Circular groove is arranged at described upper cover (4) bottom, covers on sample loop (2); There is cylindrical hole at described upper cover (4) middle part, and in stainless steel piston (3) patchhole and lower end contacts with the metal porous disc (7) of test specimen (8) top.
2. a kind of pressure chamber for high-temperature expansion and perviousness analyzer according to claim 1, is characterized in that: described stainless steel piston (3) middle part diameter is larger than bottom, and middle part outshot and upper cover are provided with O-ring seal between (4).
3. a kind of pressure chamber for high-temperature expansion and perviousness analyzer according to claim 2, it is characterized in that: the upper cover of described stainless steel piston (3) has pressure transducer (12), described pressure transducer (12) is fastening by bolt and upper cover (4), and pressure transducer (12) bottom sensitive surface contacts with stainless steel piston (3) middle part outshot.
4. a kind of pressure chamber for high-temperature expansion and perviousness analyzer according to claim 3, it is characterized in that: described stainless steel piston (3) bottom and sidewall are provided with hole, base apertures communicates with areole, areole communicates with the water outlet duct (14) in upper cover (4), and described water outlet duct (14) is whole downward-sloping.
5. a kind of pressure chamber for high-temperature expansion and perviousness analyzer according to claim 1, it is characterized in that: the base apertures top of described stainless steel piston (3) communicates with Temperature Humidity Sensor hole, in Temperature Humidity Sensor hole, be provided with Temperature Humidity Sensor (15), and Temperature Humidity Sensor hole is positioned at top, water outlet duct (14).
6. a kind of pressure chamber for high-temperature expansion and perviousness analyzer according to claim 1, it is characterized in that: described sample loop (2) bottom surface and base (1) contact position and sample loop (2) end face and upper cover (4) contact position are respectively provided with the O-ring seal of an O type, O-ring seal adopts fluororubber.
7. a kind of pressure chamber for high-temperature expansion and perviousness analyzer according to claim 1, is characterized in that: described base (1) is with upper cover (4) by bolted, and described admitting pipe joint (6) is connected with water inlet system (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659675.8U CN203502409U (en) | 2013-10-24 | 2013-10-24 | Pressure chamber for tester with high temperature expansibility and permeability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659675.8U CN203502409U (en) | 2013-10-24 | 2013-10-24 | Pressure chamber for tester with high temperature expansibility and permeability |
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| CN203502409U true CN203502409U (en) | 2014-03-26 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334306A (en) * | 2015-10-23 | 2016-02-17 | 西安近代化学研究所 | Detachable sample cage for explosive volume expansion coefficient measuring device |
| CN105784925A (en) * | 2014-12-26 | 2016-07-20 | 核工业北京地质研究院 | Head cover device for buffer material test bench cavity |
| CN108020495A (en) * | 2018-02-05 | 2018-05-11 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of high temperature venting degree tester and its test method |
| CN109655599A (en) * | 2018-12-04 | 2019-04-19 | 三峡大学 | A kind of bentonite inflated power of high-pressure solid-infiltration coupling test instrument and its application method |
| CN111610315A (en) * | 2020-07-03 | 2020-09-01 | 核工业北京地质研究院 | Bentonite building block single seam healing effect testing device and method |
-
2013
- 2013-10-24 CN CN201320659675.8U patent/CN203502409U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784925A (en) * | 2014-12-26 | 2016-07-20 | 核工业北京地质研究院 | Head cover device for buffer material test bench cavity |
| CN105334306A (en) * | 2015-10-23 | 2016-02-17 | 西安近代化学研究所 | Detachable sample cage for explosive volume expansion coefficient measuring device |
| CN108020495A (en) * | 2018-02-05 | 2018-05-11 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of high temperature venting degree tester and its test method |
| CN108020495B (en) * | 2018-02-05 | 2023-04-25 | 中钢集团洛阳耐火材料研究院有限公司 | High-temperature air permeability tester and test method thereof |
| CN109655599A (en) * | 2018-12-04 | 2019-04-19 | 三峡大学 | A kind of bentonite inflated power of high-pressure solid-infiltration coupling test instrument and its application method |
| CN111610315A (en) * | 2020-07-03 | 2020-09-01 | 核工业北京地质研究院 | Bentonite building block single seam healing effect testing device and method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing nuclear North research and Development Co.,Ltd. Assignor: BEIJING Research Institute OF URANIUM GEOLOGY Contract record no.: 2014110000050 Denomination of utility model: Pressure chamber for tester with high temperature expansibility and permeability Granted publication date: 20140326 License type: Exclusive License Record date: 20140820 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |