CN106043633A - Pressure regulating filler for bathyscaphe pressure resistant shell and filling device of pressure regulating filler - Google Patents
Pressure regulating filler for bathyscaphe pressure resistant shell and filling device of pressure regulating filler Download PDFInfo
- Publication number
- CN106043633A CN106043633A CN201610363074.0A CN201610363074A CN106043633A CN 106043633 A CN106043633 A CN 106043633A CN 201610363074 A CN201610363074 A CN 201610363074A CN 106043633 A CN106043633 A CN 106043633A
- Authority
- CN
- China
- Prior art keywords
- pressure
- shell
- oil
- space
- hydraulic
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/001—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/34—Diving chambers with mechanical link, e.g. cable, to a base
- B63C11/36—Diving chambers with mechanical link, e.g. cable, to a base of closed type
Abstract
The invention discloses pressure regulating filler for a bathyscaphe pressure resistant shell. The pressure intensity of the space between an outer shell and an inner shell can be accurately controlled through the pressure regulating filler, the outer shell and the inner shell of a bathyscaphe cannot be corroded, and the bathyscaphe still can work normally at the low temperature, especially at the temperature below 0 DEG C. By the adoption of the pressure regulating filler for the bathyscaphe pressure resistant shell, the pressure intensity outside the bathyscaphe is smaller than or equal to 120 MPa, the pressure intensity inside the bathyscaphe is 0.1 MPa, the bathyscaphe pressure resistant shell comprises two layers of spherical shells which are the outer shell and the inner shell, the space between the outer shell and the inner shell contains fluid, the assigned pressure intensity is formed through a layering pressure regulating device which is a device for regulating the pressure through the seawater pressure intensity, the fluid is low-temperature hydraulic oil, and the largest borne pressure intensity of the low-temperature hydraulic oil is larger than or equal to 50 MPa.
Description
Technical field
The invention belongs to the technical field of benthoscope, the pressure regulation more particularly to a kind of benthoscope pneumatic shell is filled out
Fill thing and filling device, mainly can efficiently control the pressure between two dividing potential drop layers of benthoscope.
Background technology
The deep sea manned submersible pressure-resistant cabin structure of various countries' development now is Single-layer Spherical Shells, and material system mainly has high-strength
Steel and titanium alloy two kinds.That dive at present is the deepest is the U.S. " deep-sea challenger " number, and submerged depth is 10908 meters.The deepest
The breakthrough of sea manned underwater vehicle pressure-resistant cabin is mainly at material and two aspects of machining accuracy.As a example by " deep-sea challenger ", it is resistance to
Pressure shell body is steel shell, internal diameter 1.1 meters, thickness 0.066 meter, in twice test of the laboratory of Pennsylvania State University, and should
Structure all passes through the deep pressure test in 114MPa sea entirely.From the analysis of experimental data of 22 foil gauges that test is installed, this knot
Structure can bear the pressure of 114 × 1.4=159.6MPa and flexing not occur.Calculating simply and show, the pressure of this spherical shell hoop should
Power has reached about 1000MPa.
Except material behavior, the machining accuracy of structure also can affect the ability of the resistance to compression/anti-flexing of structure.Deep diving now
The requirement of device spherical shell machining accuracy is the highest, as a example by the precision of Japan's " deep-sea 6500 " manufacturing process, and the proper sphere degree of spherical shell
(radius of curvature i.e. surveyed and the ratio of standard curvature radius) the nearlyest 1.004.It addition, existing pressure hull safety coefficient is relatively
Low, too high stress level can make be greatly reduced fatigue life.
Now, in terms of the strength of materials and machining accuracy, room for promotion is the least.Only research and development Novel pressure-resistant cabin knot
Structure, breaks away from the dependence to the strength of materials and machining accuracy, is only the approach of a new generation's bathyscaph development.
To this end, applicant have developed a kind of layering pressure regulation submersible, as it is shown in figure 1, the pressure outside submersible≤
120MPa, the pressure inside submersible is 0.1MPa, and this layering pressure regulation submersible includes 2 layers of spherical shell, shell 5 and inner shell 6, shell
With the space between inner shell arranges fluid, and be filled with appointment pressure by layering regulator, described layering regulator according to
The pressure in the sea water advanced space regulated between adjacent two layers spherical shell.So do not increase submersible without additionaling power equipment
Weight, it is possible to the pressure between self regulation adjacent two layers spherical shell, time-consuming cost and human cost, reliability is higher.
But, which kind of fluid the space between shell and inner shell arranges, and just can accurately control the pressure in this space, and
And shell and the inner shell of benthoscope will not be corroded, and remain able to normal in low temperature, the deep-sea of especially less than 0 degree
Work, for layering pressure regulation submersible actual realization it is critical that.
Summary of the invention
The technology of the present invention solves problem: overcome the deficiencies in the prior art, it is provided that a kind of benthoscope pneumatic shell
Pressure regulation implant, it can accurately control the pressure in the space between shell and inner shell, and will not corrode benthoscope
Shell and inner shell, and remain able to normally work low temperature especially less than 0 degree Celsius.
The technical solution of the present invention is: the pressure regulation implant of this benthoscope pneumatic shell, outside submersible
Pressure≤120MPa, the pressure inside submersible is 0.1MPa, and this benthoscope pneumatic shell includes 2 layers of spherical shell, shell and interior
Shell, the space between shell and inner shell arranges fluid, and is filled with appointment pressure by layering regulator, and described layering pressure regulation fills
Putting the device being to utilize sea water pressure to realize pressure regulation, described fluid is low temperature hydraulic oil, and its maximum bears pressure >=50MPa.
Additionally providing the pressure regulation filling device of the pressure regulation implant of a kind of benthoscope pneumatic shell, it includes degasification system
System, water scavenging system, injection system；Hydraulic oil removes bubble removing by off gas system, by water scavenging system separation water, by oiling system
Hydraulic oil is injected the space between shell and inner shell by system.
The present invention uses the fluid that low temperature hydraulic oil is arranged as the space between shell and inner shell, and its maximum bears pressure
>=50MPa, therefore, it is possible to the pressure in the space accurately controlled between shell and inner shell, and benthoscope will not be corroded
Shell and inner shell, and remain able to normally work low temperature especially less than 0 degree Celsius.
Accompanying drawing explanation
Fig. 1 is the structural representation of the layering pressure regulation submersible according to the present invention.
Fig. 2 is the structural representation of the layering regulator according to the present invention.
Fig. 3 is that the F-F of Fig. 2 is to sectional view.
Detailed description of the invention
As it is shown in figure 1, the pressure regulation implant of this benthoscope pneumatic shell, the pressure≤120MPa outside submersible,
Pressure inside submersible is 0.1MPa, and this benthoscope pneumatic shell includes 2 layers of spherical shell, shell 5 and inner shell 6, shell and interior
Space between shell arranges fluid, and is filled with appointment pressure by layering regulator, and described layering regulator is to utilize sea
Hydraulic pressure realizes by force the device of pressure regulation, and described fluid is low temperature hydraulic oil, and its maximum bears pressure >=50MPa.
The present invention uses the fluid that low temperature hydraulic oil is arranged as the space between shell and inner shell, and its maximum bears pressure
>=50MPa, therefore, it is possible to the pressure in the space accurately controlled between shell and inner shell, and benthoscope will not be corroded
Shell and inner shell, and remain able to normally work low temperature especially less than 0 degree Celsius.
Further, as shown in Figure 2,3, described layering regulator is piston, piston include cylinder 2, piston rod 1,
Connecting hole 3；Piston rod moves back and forth in cylinder, and piston is connected by the space between connecting hole with adjacent two layers spherical shell, lives
Cavity 4 and connecting hole 3 that first end and the cylinder of stopper rod surrounds turn on, and the second end of piston rod and contact with sea water, according to sea water
The degree of depth regulates the pressure in the space between adjacent two layers spherical shell.So do not increase the weight of submersible without additionaling power equipment
Amount, it is possible to the pressure between self regulation adjacent two layers spherical shell, time-consuming cost and human cost, reliability is higher.
Further, described hydraulic oil is L-HV46 hydraulic oil.
Hydraulic pressure oil classification is given below.
Hydraulic oil in hydraulic gear primarily serves the effect of transmission pressure, and the key property of hydraulic oil is by the closeest
Degree, viscosity and viscosity index (VI) thereof, cryogenic property, etc.,
A. the standard criterion of hydraulic oil:
GB 11118.1-2011Hydraulic fluids of L-HL,L-HM,L-HV,L-HS and L-HG type
Hydraulic oil is labeled as:
B. pressure and temperature classifications are pressed:
The working range of hydraulic oil
C. composition or function classification are pressed
| ISO classifies | Function | Oil name |
| HH | Mineral lubricating oil without additive | Machinery oil, neutral oil |
| HL | The mineral lubricating oil of antirust antioxygenic property | Universal machine tool lubrication oil |
| HM | The mineral lubricating oil that antirust antioxygen is wear-resistant | Antiwear hydraulic oil |
| HR | Antirust antioxygen, add the mineral lubricating oil of viscosifier | |
| HV | Antirust antioxygen is wear-resistant, add viscosifier mineral lubricating oil | Low temperature hydraulic oil |
| HG | Antirust antioxygen slip mineral lubricating oil wear-resistant, anti-stick | Hydraulic guide rail oil |
| HS | Antirust antioxygen is wear-resistant, add viscosifier synthetic hydrocarbon oil | Synthesis hydrocarbon low temperature hydraulic oil |
| Other | The emulsion that water content is different |
Dividing according to ISO6743/4, hydraulic oil is divided into two big classes: a class is the mineral oil origin hydraulic pressure of fire-resistant (or difficult combustion)
Oil, such as HH, HL, HM, HR, HV, HG.Another kind of is inflammable hydro carbons hydraulic oil (mineral oils and synthesis hydrocarbon type).
Further, described low temperature hydraulic oil controls its pressure by hydraulic means, and described hydraulic means includes hydraulic pressure
Motor, choke valve.Controlled the flow of hydraulic oil by hydraulic motor, choke valve, thus control its pressure.
Further, it includes off gas system, water scavenging system, injection system；Hydraulic oil goes degasification by off gas system
Bubble, by water scavenging system separation water, injects the space between shell and inner shell by injection system by hydraulic oil.
Further, described off gas system is vacuum oil-filter.Vacuum oil-filter oil conditioner at home and abroad has and compares
Ripe product, such as the lube purification equipment of great Sheng company of Japan, and the vacuum oil filtering equipment of domestic Dong Zhu company, it is adaptable to
Power industry and electric appliances plant, paper mill, electrochemical factory, the transformer oil of industrial and mining establishment, steam turbine oil (turbine oil), lubrication
Oil, the demulsification of the iundustrial oils such as hydraulic oil, degasification, remove impurity, drainage purify and waste oil regeneration.One vacuum oil-filter mainly by
Oil-feed filtration system, vacuum-pumping system, go out oil filtration system composition.Fluid is carried out filtration in advance by oil-feed filtration system；
Vacuum-pumping system, by the negative pressure that is evacuated in vacuum tank (generally or lower), makes the moisture in fluid can be under relatively low temperature state
Volatilization, the cooled device of water vapour of extraction and water knockout drum condensation, precipitation；Going out oil filtration system major function is from vacuum by fluid
Tank is extracted out, then returns in work box (tank) after multiple fine filters.
Further, described water scavenging system is vaccum dewatering device.This technology utilizes water and oil different former of boiling point
Reason, can remove the water of all states effectively.The temperature that vaccum dewatering equipment is increased to by oil temperature, and produce about true
Sky, spreads oil simultaneously and produces the biggest surface area and effectively make the water boiling in oil and be evaporated.This device exists
Some other pollutant easily gasified can also be removed while removing water, there is also the risk of additive gasification loss simultaneously,
Therefore strict temperature control is wanted to avoid base oil and add the degeneration carved.
Further, described injection system includes vacuum oil unit and high-pressure injection unit；Vacuum oil unit is first
To the space evacuation between shell and inner shell, reduce air therein residual, then in the space between shell and inner shell
Fluid pressure line between the two is connected after portion's vacuum is identical with vacuum in vacuum tank, then to the space between shell and inner shell
Continuing evacuation, the hydraulic oil after utilizing pressure differential will to purify slowly is slowly injected into shell from the lower end treating oiling hydraulic test
And interior volume between inner shell (this process can avoid the disturbance of hydraulic oil, in controlling hydraulic oil and treating oiling hydraulic test
The contact area of residual air, effectively reduces secondary pollution)；High-pressure injection unit carries out height to the space between shell and inner shell
Pressure injection oil, (as a example by holmium diaphragm pressure compensator, high-pressure injection can be further to make internal pressure be more than an extraneous atmospheric pressure
Reduce the stereomutation amount of deep-sea hydraulic test hydraulic oil in use, it is ensured that pressure compensator has enough when using at deep-sea
Amount of redundancy).
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, every depends on
Any simple modification, equivalent variations and the modification made above example according to the technical spirit of the present invention, the most still belongs to the present invention
The protection domain of technical scheme.
Claims (8)
1. a pressure regulation implant for benthoscope pneumatic shell, the pressure≤120MPa outside submersible, inside submersible
Pressure is 0.1MPa, and this benthoscope pneumatic shell includes 2 layers of spherical shell, shell and inner shell, and the space between shell and inner shell sets
Putting fluid, and be filled with appointment pressure by layering regulator, described layering regulator is to utilize sea water pressure to realize pressure regulation
Device, it is characterised in that: described fluid is low temperature hydraulic oil, and its maximum bears pressure >=50MPa.
The pressure regulation implant of benthoscope pneumatic shell the most according to claim 1, it is characterised in that: described layering pressure regulation
Device is piston, and piston includes cylinder (2), piston rod (1), connecting hole (3)；Piston rod moves back and forth in cylinder, and piston leads to
The space crossed between connecting hole with adjacent two layers spherical shell connects, cavity (4) that the first end of piston rod surrounds with cylinder and being connected
Hole (3) turns on, and the second end of piston rod and contact with sea water, according to the sea water advanced space regulated between adjacent two layers spherical shell
Pressure.
The pressure regulation implant of benthoscope pneumatic shell the most according to claim 2, it is characterised in that: described hydraulic oil is
L-HV46 hydraulic oil.
The pressure regulation implant of benthoscope pneumatic shell the most according to claim 1, it is characterised in that: described low temperature hydraulic pressure
Oil controls its pressure by hydraulic means, and described hydraulic means includes hydraulic motor, choke valve.
5. a pressure regulation filling device for the pressure regulation implant of benthoscope pneumatic shell according to claim 1, it is special
Levy and be: it includes off gas system, water scavenging system, injection system；Hydraulic oil removes bubble removing by off gas system, by except water system
System separates water, by injection system, hydraulic oil injects the space between shell and inner shell.
Pressure regulation filling device the most according to claim 5, it is characterised in that: described off gas system is vacuum oil-filter.
Pressure regulation filling device the most according to claim 6, it is characterised in that: described water scavenging system is vaccum dewatering device.
Pressure regulation filling device the most according to claim 7, it is characterised in that: described injection system includes vacuum oil unit
With high-pressure injection unit；Vacuum oil unit, first to the space evacuation between shell and inner shell, reduces air therein residual,
Then the interior volume vacuum rear hydraulic pressure connected between the two identical with vacuum in vacuum tank between shell and inner shell
Pipeline, then evacuation is continued in the space between shell and inner shell, the hydraulic oil after utilizing pressure differential will to purify slowly is from treating
The lower end of oiling hydraulic test is slowly injected into the interior volume between shell and inner shell；High-pressure injection unit to shell and inner shell it
Between space carry out high-pressure injection, make internal pressure be more than an extraneous atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610363074.0A CN106043633B (en) | 2016-05-27 | 2016-05-27 | A kind of the pressure regulation filler and its filling device of benthoscope pneumatic shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610363074.0A CN106043633B (en) | 2016-05-27 | 2016-05-27 | A kind of the pressure regulation filler and its filling device of benthoscope pneumatic shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106043633A true CN106043633A (en) | 2016-10-26 |
| CN106043633B CN106043633B (en) | 2019-01-29 |
Family
ID=57176094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610363074.0A Expired - Fee Related CN106043633B (en) | 2016-05-27 | 2016-05-27 | A kind of the pressure regulation filler and its filling device of benthoscope pneumatic shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106043633B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107826226A (en) * | 2017-12-14 | 2018-03-23 | 邵绪贤 | A kind of method and device of the anti-high pressure of active |
| CN107933860A (en) * | 2017-11-23 | 2018-04-20 | 广东合新材料研究院有限公司 | A kind of underwater mobile carrying platform |
| CN109110047A (en) * | 2018-09-20 | 2019-01-01 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of benthoscope pressure hull |
| CN112829910A (en) * | 2021-03-19 | 2021-05-25 | 苏州市臻湖流体技术有限公司 | Deep water type electric propulsion system |
| CN113511298A (en) * | 2021-05-08 | 2021-10-19 | 中国船舶科学研究中心 | Pressure-resistant structure suitable for deep submergence and floating submergence method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11157495A (en) * | 1997-11-26 | 1999-06-15 | Takashi Uesugi | Pressure absorbing structure of moving body |
| KR20110083536A (en) * | 2010-01-14 | 2011-07-20 | 호발츠벨케 도이췌 벨프트 게엠베하 | Method for operation of a hydraulic system of a submarine |
| CN202789862U (en) * | 2012-09-11 | 2013-03-13 | 浙江大学 | Special oiling device for multifunctional deep sea hydraulic system |
| CN103241353A (en) * | 2012-02-10 | 2013-08-14 | 张小玲 | Multilayer submersible |
| CN103486096A (en) * | 2013-09-27 | 2014-01-01 | 浙江大学舟山海洋研究中心 | Piston-type deep sea pressure compensator capable of avoiding sea water pollution |
| CN104129484A (en) * | 2014-08-15 | 2014-11-05 | 冯建金 | Cabin of underwater detecting instrument |
-
2016
- 2016-05-27 CN CN201610363074.0A patent/CN106043633B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11157495A (en) * | 1997-11-26 | 1999-06-15 | Takashi Uesugi | Pressure absorbing structure of moving body |
| KR20110083536A (en) * | 2010-01-14 | 2011-07-20 | 호발츠벨케 도이췌 벨프트 게엠베하 | Method for operation of a hydraulic system of a submarine |
| CN103241353A (en) * | 2012-02-10 | 2013-08-14 | 张小玲 | Multilayer submersible |
| CN202789862U (en) * | 2012-09-11 | 2013-03-13 | 浙江大学 | Special oiling device for multifunctional deep sea hydraulic system |
| CN103486096A (en) * | 2013-09-27 | 2014-01-01 | 浙江大学舟山海洋研究中心 | Piston-type deep sea pressure compensator capable of avoiding sea water pollution |
| CN104129484A (en) * | 2014-08-15 | 2014-11-05 | 冯建金 | Cabin of underwater detecting instrument |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107933860A (en) * | 2017-11-23 | 2018-04-20 | 广东合新材料研究院有限公司 | A kind of underwater mobile carrying platform |
| CN107933860B (en) * | 2017-11-23 | 2023-11-07 | 广东合一新材料研究院有限公司 | Underwater mobile carrying platform |
| CN107826226A (en) * | 2017-12-14 | 2018-03-23 | 邵绪贤 | A kind of method and device of the anti-high pressure of active |
| CN109110047A (en) * | 2018-09-20 | 2019-01-01 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of benthoscope pressure hull |
| CN112829910A (en) * | 2021-03-19 | 2021-05-25 | 苏州市臻湖流体技术有限公司 | Deep water type electric propulsion system |
| CN113511298A (en) * | 2021-05-08 | 2021-10-19 | 中国船舶科学研究中心 | Pressure-resistant structure suitable for deep submergence and floating submergence method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106043633B (en) | 2019-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106043633A (en) | Pressure regulating filler for bathyscaphe pressure resistant shell and filling device of pressure regulating filler | |
| CN101832303B (en) | Piston-type deep sea water pressure compensation energy accumulator | |
| Sadr et al. | An overview of gas overflow in gaseous hydrates | |
| US9488198B2 (en) | Device for transferring a hydraulic working pressure in a pressure fluid for actuating hydraulic units of deep-sea systems | |
| GB1309826A (en) | Subsea satellite for gas production | |
| CN202789862U (en) | Special oiling device for multifunctional deep sea hydraulic system | |
| CN209325105U (en) | Unidirectional valve group for subsea control modules | |
| CN105151579B (en) | A kind of oil and water displacement formula oil storage tank | |
| CN105399227B (en) | A kind of gas field fractured return drainage liquid recovery processing apparatus and method | |
| CN110078236A (en) | A kind of water treatment system and its processing method suitable for offshore oilfield platform | |
| Golz et al. | A ballast system for automated deep-sea ascents | |
| CN204827938U (en) | High -efficient oil -gas separator | |
| DE102013215453A1 (en) | Diving bearing arrangement | |
| CN207467419U (en) | A kind of buried double layer innerliner tank | |
| CN205620000U (en) | Crude oil dehydration metering device | |
| CN102030089A (en) | Self-adjusting storm valve | |
| CN201168461Y (en) | Oil-water bidirectional separator | |
| CN217613082U (en) | Oil-water separator of oil-filling compressor | |
| CN101709646B (en) | Floating drilling device of offshore drill | |
| CN205560242U (en) | Power station unit overhauls on --spot lubricating oil first order segregate recovery unit | |
| CN104164859A (en) | Floating oil recovery device | |
| CN205350814U (en) | Butter adds notes pile -up valve | |
| CN207648432U (en) | A kind of pumping unit centralized lubricating system | |
| CN204247192U (en) | A kind of OIL IN LUBRICATING OIL PRODUCTION equipment | |
| CN202195257U (en) | Lubricating oil automatic protection device for large unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190129 Termination date: 20210527 |