CN105889145B - Minute-pressure responds liquid storage device - Google Patents
Minute-pressure responds liquid storage device Download PDFInfo
- Publication number
- CN105889145B CN105889145B CN201410753573.1A CN201410753573A CN105889145B CN 105889145 B CN105889145 B CN 105889145B CN 201410753573 A CN201410753573 A CN 201410753573A CN 105889145 B CN105889145 B CN 105889145B
- Authority
- CN
- China
- Prior art keywords
- upper housing
- storage device
- liquid storage
- outer ring
- lower case
- 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.)
- Expired - Fee Related
Links
Landscapes
- Diaphragms And Bellows (AREA)
Abstract
The present invention provides a kind of minute-pressure response liquid storage device, including upper housing component, lower case component and seal assembly；The upper housing component includes core assembly and upper housing；The lower case component includes filter assemblies and lower case；The seal assembly includes outer ring, inner ring and rubber diaphragm, the rubber diaphragm shape is taper type, with overhanging edge, the edge has twice semicircle seal convexity, the edge is clamped between the outer ring and the inner ring, two pass redundant seal is formed by semicircle seal convexity described in twice, the inner ring and outer ring use laser segmented plane-welding, the periphery of the outer ring has solder-bump, the upper housing, the lower case and the solder-bump weld together, to form air cavity by the seal assembly and the upper housing component, sap cavity is formed by the seal assembly and the lower case component.Liquid storage device of the invention can be used for fluid circuit, and good airproof performance is quick on the draw to pressure, is light-weight.
Description
Technical field
The present invention relates to a kind of minute-pressures to respond liquid storage device, belongs to spacecraft thermal control field, it is small to be applied particularly to satellite etc.
The Fluid for Single-phase Fluid Loop System of type spacecraft.
Background technique
Fluid for Single-phase Fluid Loop System based on mechanical pump has simple structure, flexible arrangement, robustness height and inheritability good
The advantages that, efficiently solve the thermal control problem of spacecraft.Since Fluid for Single-phase Fluid Loop System is a closed system, work as temperature change
When, system pressure meeting change dramatically, in general, system pressure reduces the work that will affect pump, and pressure rise exceeds equipment
Pressure resistance when can occur leakage etc. safety problems.Therefore it in system needs that liquid storage device is added, to inhibit fluid circuit to become because of temperature
Change and working medium is caused to be expanded with heat and contract with cold the influence to fluid circuit, compensate the leakage of circuit working medium in long-play, ensures stream
The normal, stable of body circuit, reliability service, to realize this function, liquid storage device need to have it is sensitive to pressure oscillation, light-weight,
The characteristics such as good airproof performance.
In the Large Spacecrafts such as space station, space shuttle, Fluid for Single-phase Fluid Loop System technology is widely applied, but limited
It is domestic that development phase is still in the application of monophasic fluid thermal control circuit in the satel-lite in the weight of mechanical pump the problems such as, through this
Patent application people retrieves in a certain range, does not find to be suitable for the related patents of small-sized spacecraft liquid storage device such as satellite and set
Meter data.
Summary of the invention
Present invention solves the technical problem that being：One kind is provided to be suitable for the small-sized spacecrafts such as satellite, exist using pressure
0.2Mpa or less and good airproof performance are quick on the draw to pressure, light-weight fluid circuit liquid storage device.
Minute-pressure response liquid storage device of the invention includes upper housing component, lower case component and seal assembly；The upper housing
Component includes core assembly and upper housing；The lower case component includes filter assemblies and lower case；The seal assembly includes
Outer ring, inner ring and rubber diaphragm, the rubber diaphragm shape are taper type, have overhanging edge, and the edge has twice
Semicircle seal convexity, the edge is clamped between the outer ring and the inner ring, close by semicircle described in twice
Envelope convexes to form two pass redundant seal, and the inner ring and outer ring use laser segmented plane-welding, and the periphery of the outer ring has
Solder-bump, the upper housing, the lower case and the solder-bump weld together, thus by the seal assembly and
The upper housing component forms air cavity, forms sap cavity by the seal assembly and the lower case component.
It is preferred that there is port portion, in port portion assembly core assembly composition inflation at the central axes of the upper housing top
Valve, the core assembly includes spool, spring and valve seat, and is sequentially loaded into the inner cavity in upper housing port portion in this order,
The spring is located in the positioning chamber of the spool and the valve seat, and the valve seat is welded on the upper housing, the spool
Plane bacterium shape metal-non-metal sealing structure is used between component and upper housing port portion, uses mesh at the inflating port
Shape sealing structure carries out redundant seal.
It is preferred that the lower casing body sidewall includes column part and the frusto-conical portion with the rubber diaphragm form fit, it is described
Column part outer wall belt has liquid oral area, the liquid mouth there are three ear shape fixed lobe at the central axes of the frusto-conical portion bottom
Portion has outlet, and the filter assemblies are formed by circular orifice and filter screen spot welding, and are welded on the liquid oral area, described
The circulation area of filter assemblies is greater than the circulation area of the outlet.
It is preferred that the bus of the taper type and the angle of axis are 45 °.
It is preferred that the material of main part of the rubber diaphragm is ethylene propylene diene rubber, and add bright and beautiful silk as support frame,
The rubber diaphragm is with a thickness of 0.5mm.
It is preferred that the outer ring is identical as the inner ring wall thickness, semi-cylindrical hill is had in the inner ring, is had on the outer ring
Corresponding semi-circular recesses, when the two cooperation compresses, realization grips the rubber diaphragm.
It is preferred that the inner ring and every section of fusion length of outer ring sectional plan welding be between 15mm~30mm, and edge
Circumferentially it is uniformly distributed.
It is preferred that also having the protective cap for being mounted on the liquid oral area and the port portion.
The invention has the beneficial effects that：
1, the connection type of main component is welding, has not only improved the reliability of sealing, but also reduce product weight；
2, it is all made of redundant seal design at critical seal position, substantially increases the reliability of sealing；
3, rubber diaphragm is designed as taper type, overturns and restores convenient for rubber diaphragm；Rubber diaphragm material selection soft,
High airtight sizing material reduces film while improving rubber diaphragm intensity and air-tightness as support frame using bright and beautiful silk
Piece thickness improves rubber diaphragm to the sensibility and fatigue durability of pressure；
4, rubber diaphragm fixed form is inner and outer rings clamp structure, inner ring and outer ring using laser segmented plane-welding into
Row positioning is convenient for assembly and test while guaranteeing reliable location, while relative to threaded connection, alleviating weight.
Detailed description of the invention
Fig. 1 is liquid storage device overall structure cut away view.
Fig. 2 is upper housing component structure cut away view.
Fig. 3 is bacterium shape sealed structural schematic diagram.
Fig. 4 is seal assembly assembling schematic diagram.
Fig. 5 is inner ring structural schematic diagram.
Fig. 6 is outer ring structure schematic diagram.
Fig. 7 is rubber diaphragm structural schematic diagram.
Fig. 8 is lower case component assembling schematic diagram.
Fig. 9 is filter assemblies assembling schematic diagram.
Specific embodiment
Referring to the drawings, the present invention is described in detail.
Fig. 1 is liquid storage device overall structure cut away view, it is mainly by upper housing component (1,2,3,4,5,6,7), lower case group
Part (10,12,13), seal assembly (8,9,11) composition, upper housing component (1,2,3,4,5,6,7), lower case component (10,12,
13), seal assembly (8,9,11) is connected by electron beam welding mode, and weld seam is according to GJB1718A-2005《Electron beam welding》I
Grade executes.Since electron beam welding weld seam is narrow, speed of welding is fast, and heat-affected zone is small, not only ensure that entirety was airtight after welding, but also keep away
Exempt from the high temperature ageing of the rubber diaphragm of seal assembly.Before welding, by the upper housing 7 of upper housing component (1,2,3,4,5,6,7), under
The lower case 10 of housing unit (10,12,13) is filled along the welding positioning surface (as shown in Figure 4) of seal assembly (8,9,11)
Match, and compress the solder-bump (as shown in Figure 4) on outer ring 8, is then circumferentially welded three using vacuum electron beam welding
Together, air cavity is formed by upper housing 7 and the rubber diaphragm 11 of seal assembly (8,9,11) in this way, and passes through seal assembly
The rubber diaphragm 11 of (8,9,11) and lower case 10 form sap cavity.Spool 4 is opened with specific purpose tool before welding, then is taken out true
Sky is welded, and for the high temperature ageing for avoiding rubber diaphragm 11, to be segmented and be welded.After the completion of welding, successively in charge valve
Inflating port (in Fig. 1 at H) be packed into O-ring seals 3, plug 2, tighten cap nut 1, realize two-stage sealing.Liquid storage device is not
Before access system, it is dust-proof that protective cap 14 is added.
Fig. 2 is upper housing component (1,2,3,4,5,6,7) structure cut away view, has port at 7 top central axes of upper housing
Spool 4, spring 5 when assembly, are sequentially loaded into the inner cavity in 7 port portion of upper housing by portion first, then slowly screw in valve seat 6, assembly
Process will guarantee that spring 5 is placed in the positioning chamber of spool 4 and valve seat 6, finally that valve seat 6 and the progress spot welding of upper housing 7 is locking, group
At charge valve (4,5,6,7).Plane bacterium shape metal-non-metal is used between the spool 4 and upper housing 7 of charge valve (4,5,6,7)
Sealing structure carries out redundant seal using mesh shape sealing structure (1,2,3) at the inflating port of charge valve, further improves sealing
Reliability.
Fig. 3 be bacterium shape metal-non-metal sealed structural schematic diagram, spool 4 it is mainly Nian Jie with the vulcanization of rubber by Copper substrate and
At, after inflation, the bacterium shape protrusion of rubber and upper housing 7 is compressed by 5 compressing force of spring and chamber pressure, realizes sealing, it will
This sealing is known as bacterium shape metal-non-metal sealing structure.
By using integral solder and the design scheme of redundant seal, through helium Mass Spectrometer Method, under 0.2Mpa pressure, liquid storage
The outer leak rate of device is less than 10-8Pa·m3/ s fully meets the requirement of the external leak rate of space environment
Fig. 4 is seal assembly assembling schematic diagram, and the shape of rubber diaphragm 11 is taper type, has overhanging edge, the side
Along with twice semicircle seal convexity.When assembly, the flattening of 11 edge of rubber diaphragm is put into outer ring 8 first, guarantees edge
Twice semicircle seal convexity (as shown in Figure 7) come into full contact with outer ring seal plane, then inner ring 9 is inserted in outer ring 8,
Semi-cylindrical hill (as shown in Figure 5) is had in inner ring 9, should mutually have semi-circular recesses (as shown in Figure 6) on outer ring 8, dependence is dedicated
Tool welds after compressing inner ring 9, outer ring 8, is realizing to rubber diaphragm 11 while gripping, by compressing rubber
The twice semicircle seal convexity (as shown in Figure 7) at 11 edge of glue film, realization air cavity are isolated with sap cavity.Inner ring 9 and outer ring 8
It is positioned using laser segmented plane-welding (welding position is as shown in Figure 4), weld inner ring 9 is consistent with 8 wall thickness of outer ring, is
While guaranteeing weld strength, 11 high temperature ageing of rubber diaphragm is avoided, every section of fusion length is between 15mm~30mm, weld seam
It is uniformly distributed circumferentially.
Seal assembly (8,9,11) seals by outer ring 8 with the twice semicircle that inner ring 9 compresses 11 edge of rubber diaphragm convex
Realization air cavity (as shown in Figure 7) is played with the isolation of sap cavity, this sealing means are two pass redundant seal, improve sealed reliable
Property；Inner ring 9 is positioned with outer ring 8 using laser segmented plane-welding (as shown in Figure 4), and Laser Welding Speed is fast, heat affecting
Region is small, can be further reduced heat accumulation after segmentation, this welding manner can make welding position and rubber diaphragm 11 away from
It is short from most, while avoiding welding waste heat damage rubber diaphragm 11, guarantees the decrement of semicircle seal convexity, further mention
The high reliability of sealing.
It by redundant seal, reasonably selects the material of diaphragm and grips mode, through helium Mass Spectrometer Method, pressed in 0.2MPa
Under power, the interior leak rate of liquid storage device is less than 10-5Pa·m3/ s, fully meets requirement.
11 material of main part of rubber diaphragm is ethylene propylene diene rubber, which has good air-tightness, hardness (Shao
You) be 50, and using bright and beautiful silk as support frame, thickness is only 0.5mm, this design guarantee 11 intensity of rubber diaphragm and
While air-tightness, rubber diaphragm 11 is improved to the sensibility and fatigue durability of pressure.11 shape of rubber diaphragm is designed as boring
Platform shape, cone angle (angle of bus coaxial line) be 45 °, while guaranteeing air cavity volume, convenient for rubber diaphragm 11 overturn with it is extensive
It is multiple.
It is measured through test, under 0.0006MPa pressure difference, rubber diaphragm (11) can be totally turned over and restore.
Fig. 8 is lower case component assembling schematic diagram.7 side wall of lower case includes column part and matches with 11 shape of rubber diaphragm
The frusto-conical portion of conjunction, column part outer wall belt have liquid oral area there are three ear shape fixed lobe at the central axes of frusto-conical portion bottom,
Liquid oral area has an outlet Y, and frusto-conical portion near liquid oral area has a positioning groove, when assembly, first by filter assemblies (12,
13) it is located in positioning groove, is then fixed at filter assemblies (12,13) edge using argon arc welding segmented welding, lower casing
The cone angle (angle of bus coaxial line) of 10 side wall frusto-conical portion of body is 45 °, and there are three the fixation of ear shape is convex for column part outer wall belt
It rises, for liquid storage device to be fixed on circuit system.Fig. 9 is filter assemblies (12,13) structural schematic diagram, it is with circular orifice 12
For support frame, 13 spot welding of filter screen of certain mesh number is fixed on circular orifice 12, filter assemblies (12,13) are welded on liquid
Oral area.When design, it is ensured that the circulation area of filter assemblies (12,13) is greater than the circulation area at outlet Y (such as Fig. 1).
After said modules assembly is completed, liquid storage device usage mode is as follows：
1, (such as Fig. 1) pipeline at liquid storage device Y is accessed into single-phase thermal control fluid circuit by the way of welding；
2, O-ring seals 3, plug 2, cap nut 1 are unloaded, by specific purpose tool, simultaneously to liquid storage device air cavity and sap cavity
It vacuumizes, then injects working medium in liquid storage device from the filler in circuit；
3, the nitrogen of certain pressure intensity is filled with from inflating port H using specific purpose tool, and pressure maintaining is for a period of time；
4, specific purpose tool is laid down, successively O-ring seals, plug is packed at inflating port (in Fig. 1 at H), tightens cap nut.
After above-mentioned steps are completed, liquid storage device maintains fluid to return by the deformation of half film of compressibility and rubber of gas
Road pressure compensates the leakage of circuit working medium in long-play in working range, realizes the purpose of design of pressure stabilizing, leak repairing.
Total measurement (volume) 550ml of the present invention, under 0.0006MPa pressure difference, rubber diaphragm can be totally turned over and restore, at 25 DEG C
When air cavity pressure is reduced to 0.09MPa by 0.2MPa, liquid discharge rate is 275ml, outer leak rate≤10-8Pa·m3/s.The present invention
Applied to the Fluid for Single-phase Fluid Loop System of the small-sized spacecraft such as satellite, it is also applied for all kinds of enclosed low-pressure fluids circuit.
The preferred embodiment of the present invention is illustrated above, but the present invention is not limited to above-described embodiments.It is right
For those skilled in the art, in the scope documented by claims, it should be apparent that it is conceivable that various modifications
Or fixed case, technology scope of the invention is also belonged to certainly.
Claims (7)
1. a kind of minute-pressure responds liquid storage device, it is characterised in that：Including upper housing component, lower case component and seal assembly；It is described
Upper housing component includes core assembly and upper housing；The lower case component includes filter assemblies and lower case；The sealing group
Part includes outer ring, inner ring and rubber diaphragm, and the rubber diaphragm shape is taper type, has overhanging edge, the edge band
There is twice semicircle seal convexity, the edge is clamped between the outer ring and the inner ring, passes through described in twice half
Circular seal convexes to form two pass redundant seal, and the inner ring and outer ring use laser segmented plane-welding, the outer ring it is outer
Week has solder-bump, and the upper housing, the lower case and the solder-bump weld together, to pass through the sealing
Component and the upper housing component form air cavity, form sap cavity by the seal assembly and the lower case component.
2. minute-pressure according to claim 1 responds liquid storage device, it is characterised in that：The upper housing top has at central axes
Port portion, the core assembly include spool, spring and valve seat, are sequentially loaded into the spool, institute in the inner cavity in the port portion
It states spring and the valve seat and forms charge valve, the spring is located in the positioning chamber of the spool and the valve seat, the valve
Seat is welded on the upper housing, and plane bacterium shape metal-Fei Jin is used between the core assembly and upper housing port portion
Belong to sealing structure, uses mesh shape sealing structure to carry out redundant seal at the inflating port of the charge valve.
3. minute-pressure according to claim 1 responds liquid storage device, it is characterised in that：The lower casing body sidewall includes column part
With the frusto-conical portion with the rubber diaphragm form fit, there are three ear shape fixed lobes for the column part outer wall belt, described
There is liquid oral area, the liquid oral area has outlet, the prismoid section near the liquid oral area at the central axes of frusto-conical portion bottom
Dividing above has positioning groove, and the filter assemblies are formed by circular orifice and filter screen spot welding, and it is recessed to be welded on the positioning
In slot, the circulation area of the filter assemblies is greater than the circulation area of the outlet.
4. minute-pressure described in any one of claim 1 to 3 responds liquid storage device, it is characterised in that：The mother of the taper type
The angle of line and axis is 45 °.
5. minute-pressure described in any one of claim 1 to 3 responds liquid storage device, it is characterised in that：The rubber diaphragm
Material of main part be ethylene propylene diene rubber, and add bright and beautiful silk as support frame, the rubber diaphragm is with a thickness of 0.5mm.
6. minute-pressure described in any one of claim 1 to 3 responds liquid storage device, it is characterised in that：The outer ring with it is described
Inner ring wall thickness is identical, and semi-cylindrical hill is had in the inner ring, there is corresponding semi-circular recesses on the outer ring, and the two matches combined pressure
When tight, realization grips the rubber diaphragm.
7. minute-pressure described in any one of claim 1 to 3 responds liquid storage device, it is characterised in that：The inner ring with it is described
Every section of fusion length of outer ring sectional plan welding is uniformly distributed circumferentially between 15mm~30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753573.1A CN105889145B (en) | 2014-12-11 | 2014-12-11 | Minute-pressure responds liquid storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753573.1A CN105889145B (en) | 2014-12-11 | 2014-12-11 | Minute-pressure responds liquid storage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105889145A CN105889145A (en) | 2016-08-24 |
| CN105889145B true CN105889145B (en) | 2018-11-16 |
Family
ID=56700030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410753573.1A Expired - Fee Related CN105889145B (en) | 2014-12-11 | 2014-12-11 | Minute-pressure responds liquid storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105889145B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533758B (en) * | 2018-05-23 | 2019-09-13 | 华中科技大学 | It is a kind of can inflation/deflation double-layer sealing structure and gas spring |
| CN116696606B (en) * | 2023-08-07 | 2023-10-27 | 东方空间技术(山东)有限公司 | Exhaust device of propellant storage tank of carrier rocket |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4449552A (en) * | 1981-02-27 | 1984-05-22 | Hydro Rene Leduc | Prestressed assembled oleo-pneumatic accumulators |
| US6295918B1 (en) * | 1999-10-15 | 2001-10-02 | John M. Simmons | Suspended diaphragm |
| CN202789776U (en) * | 2012-08-31 | 2013-03-13 | 刘瑞川 | Special diaphragm accumulator for hybrid power automobile |
| CN202883512U (en) * | 2012-11-07 | 2013-04-17 | 王凯 | Straight diaphragm accumulator |
| CN103206417A (en) * | 2013-05-06 | 2013-07-17 | 布柯玛蓄能器（天津）有限公司 | 70MPa stainless steel diaphragm type energy accumulator |
| CN103362878A (en) * | 2012-03-27 | 2013-10-23 | 上海御能动力科技有限公司 | Capacity-adjustable diaphragm-type pulsation absorbing energy accumulator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10307587A1 (en) * | 2003-02-22 | 2004-09-09 | Hydac Technology Gmbh | Storage device, preferably membrane storage |
-
2014
- 2014-12-11 CN CN201410753573.1A patent/CN105889145B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4449552A (en) * | 1981-02-27 | 1984-05-22 | Hydro Rene Leduc | Prestressed assembled oleo-pneumatic accumulators |
| US6295918B1 (en) * | 1999-10-15 | 2001-10-02 | John M. Simmons | Suspended diaphragm |
| CN103362878A (en) * | 2012-03-27 | 2013-10-23 | 上海御能动力科技有限公司 | Capacity-adjustable diaphragm-type pulsation absorbing energy accumulator |
| CN202789776U (en) * | 2012-08-31 | 2013-03-13 | 刘瑞川 | Special diaphragm accumulator for hybrid power automobile |
| CN202883512U (en) * | 2012-11-07 | 2013-04-17 | 王凯 | Straight diaphragm accumulator |
| CN103206417A (en) * | 2013-05-06 | 2013-07-17 | 布柯玛蓄能器（天津）有限公司 | 70MPa stainless steel diaphragm type energy accumulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105889145A (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104551381B (en) | The welding method of tungsten target material assembly | |
| CN110748740B (en) | Energy storage air bag connecting pipe sealing device and sealing method | |
| CN202501053U (en) | Long-life redundancy seal gas charging valve | |
| JPH064286Y2 (en) | Infrared detector | |
| CN105889145B (en) | Minute-pressure responds liquid storage device | |
| CN106458312A (en) | High-altitude balloon filling device | |
| CN210920550U (en) | Energy storage air bag connecting pipe sealing device | |
| CN106287199A (en) | Hydrogen-holder | |
| CN205227871U (en) | Solar energy collection pipe that sealing performance is good | |
| CN203517310U (en) | Sealing structure for high-pressure composite cylinder | |
| CN105070534A (en) | Polar column sealing device for spatial super capacitor | |
| CN105402596B (en) | A kind of transferring device for the filling of satellite electric propulsion system xenon | |
| CN107489858B (en) | The hot On Tranofer Tube For Liquid Helium of low drain | |
| RU2372258C1 (en) | Device to seal vessels with working media and method to its production | |
| CN109374235A (en) | A kind of gas tubular test equipment | |
| CN112407643B (en) | Low-temperature adsorption device for tank interlayer and working method | |
| CN202660236U (en) | Special device for vacuum pumping and helium-gas inflation of reactor spent-fuel storing container | |
| CN102040186A (en) | High vacuum ceramic LCC packaging method | |
| CN209262268U (en) | A kind of gas movable sealing structure | |
| CN113028069A (en) | Inflating nozzle structure for inflating sealing ring and assembling process | |
| CN208670172U (en) | A kind of novel waterproof air previous explosion-proof valve | |
| CN103915655B (en) | A kind of round Ni-MH battery and manufacture method thereof | |
| CN206770972U (en) | A kind of gas storage gas leakage combination unit used on vacuum cavity | |
| CN201946658U (en) | Power battery anti-explosion valve and power battery | |
| US3364649A (en) | Apparatus for sealing vacuum enclosures |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20181116 Termination date: 20191211 |