CN107062922B - Main exhauster of sintering frequency conversion tank disassembles and installs method - Google Patents
Main exhauster of sintering frequency conversion tank disassembles and installs method Download PDFInfo
- Publication number
- CN107062922B CN107062922B CN201710259198.9A CN201710259198A CN107062922B CN 107062922 B CN107062922 B CN 107062922B CN 201710259198 A CN201710259198 A CN 201710259198A CN 107062922 B CN107062922 B CN 107062922B
- Authority
- CN
- China
- Prior art keywords
- frequency conversion
- conversion tank
- rolling
- tank
- transported
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
- F27D17/002—Details of the installations, e.g. fume conduits or seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of main exhauster of sintering frequency conversion tanks to disassemble and install method, and wherein method for dismounting includes: removing obstacles object；It is laid with channel steel and steel plate；Dismantle cooling air channel；Mobile first frequency conversion tank and the second frequency conversion tank, reserve the space of third frequency conversion tank disassembly；First third frequency conversion tank is rolled outside fortune Transducer Room using rolling bar；The third frequency conversion tank under dismantling is transported through using crane.Installation method includes: that third frequency conversion tank to be installed is placed on outside Transducer Room；Removing obstacles object；It is laid with channel steel and steel plate；In mobile first frequency conversion tank and the second frequency conversion tank, the space of third frequency conversion tank installation is reserved；The rolling of third frequency conversion tank is transported to position to be installed using rolling bar；Mounting foot bolt and cooling air channel.It is greatly reduced using the task difficulty that this method mounts and dismounts third frequency conversion tank, the installation and removal of third frequency conversion tank can be completed in three days, substantially reduce the construction time, improve the efficiency of operation.
Description
Technical field
The invention belongs to sintering technology fields, and in particular to a kind of main exhauster of sintering frequency conversion tank disassembly and installation method.
Background technique
With the rapid development of modern industry, steel production scale is increasing, energy consumption is also more and more, energy-saving ring
Protect the important investigation factor that index increasingly becomes steel manufacture process.In steel production, iron-bearing material ore enters blast furnace
It needs to handle by sintering system before smelting, it is, various powdery iron-containing raw materials are incorporated suitable fuel and flux,
Suitable water is added, is mixed with after pelletizing, cloth is placed on pallet and roasts, a series of physical chemical change is brought it about,
The sinter for being easy to smelt is formed, this process is referred to as to be sintered.
Sintering system mainly includes the multiple equipments such as pallet, mixing machine, main exhauster, ring cold machine, wherein main exhausting
Machine is one of its main corollary equipment, it directly influences the yield and quality and energy consumption of sintering machine, is the sintering production " heart
It is dirty ", its main function is to generate negative pressure by carrying out exhausting to flue, is easy sintering feed igniting, the solid in sintering feed
Full combustion of fuel supplies energy for sintering, while by the various gases generated in sintering process by flue, electric precipitator is net
It is discharged after change by chimney.
In the actual working process, main exhauster is generally connect with converter plant, according to the need of various sintering operating conditions
The operating condition of main exhauster is adjusted, be as shown in Fig. 1 a kind of existing peace of main exhauster room 1 and Transducer Room 2
Plane of arrangement figure is filled, two groups of frequency-charger cabinet groups are equipped in Transducer Room 2, wherein the upconverter cabinet group of upside, downside is
Low-converter cabinet group, every group of frequency-charger cabinet group include five frequency-charger cabinets, and each frequency-charger cabinet respectively connects a cooling
Air duct, while each frequency conversion tank is fixed on the ground by foundation bolt, on the ground of every group of frequency-charger cabinet group installation and
The left and right sides offers cable irrigation canals and ditches 4, and five frequency conversion tanks of upconverter cabinet group are from by being followed successively by the first frequency conversion tank, to a left side
Two frequency conversion tanks, third frequency conversion tank 3, the 4th frequency conversion tank and the 5th frequency conversion tank, wherein centrally located third frequency conversion tank 3 is long
3.4 meters, it is 1.7 meters wide, 3.0 meters high, weigh 8.5 tons, volume is big, weight weight, at the same through actual use find, third frequency conversion tank 3 damage
Bad probability be much larger than other frequency conversion tanks, when needing to replace third frequency conversion tank 3, due to entire working space is narrow,
The factors such as with a varied topography, the installing and dismounting technical requirements height of working space, so that the task difficulty of 3 installing and dismounting of third frequency conversion tank is big
Big to increase, the construction time generally requires operation in ten days, and therefore, urgent need, which develops one kind and can facilitate, installs third frequency conversion tank
With the method for disassembly.
Summary of the invention
In view of this, task difficulty can be substantially reduced the purpose of the present invention is to provide a kind of, shorten the burning of construction time
It ties main exhauster frequency conversion tank and disassembles and installs method.
In order to achieve the above objectives, the invention provides the following technical scheme:
Main exhauster of sintering frequency conversion tank method for dismounting, comprising the following steps:
(1), the barrier in third frequency conversion tank to gate transit route is removed；
(2), channel steel and steel plate are successively laid with from top to bottom at the cable irrigation canals and ditches of transit route；
(3), the cooling air channel being mounted in third frequency conversion tank is removed from cabinet body；
(4), the foundation bolt in the first frequency conversion tank and the second frequency conversion tank is removed, and by the first frequency conversion tank and the second frequency conversion tank
Simultaneously to the mobile 45-55mm in the direction far from third frequency conversion tank, the space of third frequency conversion tank disassembly is reserved；
(5), the foundation bolt in third frequency conversion tank is removed；
(6), jack is installed between third frequency conversion tank and ground, starts jack, so that third frequency conversion tank ramps up
It rises；
(7), rolling bar is installed in the bottom of third frequency conversion tank, removes jack；
(8), first the rolling of third frequency conversion tank is transported between two groups of frequency-charger cabinet groups using rolling bar, then adjusts third frequency conversion tank
The rolling of third frequency conversion tank is transported at the gate of Transducer Room, adjusts the rolling bar of third frequency conversion tank bottom again, by the by bottom rolling bar
The rolling of three frequency conversion tanks is transported to outside Transducer Room；
(9), stopping outside Transducer Room has crane, is transported through the third frequency conversion tank under dismantling using crane.
Preferably, it in step (6), is promoted using the jack pair third frequency conversion tank of 6 5T.
It preferably, is 50mm by the mobile distance of the first frequency conversion tank and the second frequency conversion tank in step (4).
Main exhauster of sintering frequency conversion tank installation method, comprising the following steps:
(1), third frequency conversion tank to be installed is placed on outside Transducer Room using crane；
(2), the barrier on from third frequency conversion tank placement location to installation site transit route is removed；
(3), channel steel and steel plate are successively laid with from top to bottom on the cable irrigation canals and ditches of transit route；
(4), the foundation bolt in the first frequency conversion tank and the second frequency conversion tank is removed, and by the first frequency conversion tank and the second frequency conversion tank
Simultaneously to the mobile 45-55mm in the direction far from third frequency conversion tank, the space of third frequency conversion tank installation is reserved；
(5), jack is installed between third frequency conversion tank and ground, starts jack, so that third frequency conversion tank ramps up
It rises；
(6), rolling bar is installed in the bottom of third frequency conversion tank, removes jack；
(7), first the rolling of third frequency conversion tank is transported at the gate of Transducer Room using rolling bar, then adjusts third frequency conversion tank bottom
The rolling of third frequency conversion tank is transported between two groups of frequency-charger cabinet groups, adjusts the rolling bar of third frequency conversion tank bottom again by the rolling bar in portion, will
The rolling of third frequency conversion tank is transported between the second frequency conversion tank and the 4th frequency conversion tank；The rolling bar for adjusting third frequency conversion tank bottom, third is become
The rolling of frequency cabinet is transported to position to be installed；
(8), the rolling bar for removing third frequency conversion tank bottom installs the foundation bolt in third frequency conversion tank；
(9), the cooling air channel in third frequency conversion tank is installed.
Preferably, it in step (5), is promoted using the jack pair third frequency conversion tank of 6 5T.
The beneficial effects of the present invention are: 1, the present invention by the way that operating environment, execution conditions etc. done earnest investigation
And research, it follows that the installation and removal method that third frequency conversion tank is used in the present invention, by practice, using the present invention
Method task difficulty that third frequency conversion tank is mounted and dismounted greatly reduce, while using this method to third frequency conversion
The installation and removal of cabinet can be completed in three days, substantially reduce the construction time, improve the efficiency of operation.
2, more than half is shortened using the time that method of the invention mounts and dismounts third frequency conversion tank, therefore can be fast
The replacement of the realization third frequency conversion tank of speed avoids the influence that main exhauster cannot work to steel sintering for a long time.
3, this programme sets channel steel and steel plate by the cable irrigation canals and ditches upper berth in transportation route, avoids in transportational process to electricity
The damage of cable.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is the mounting arrangements plan view of main exhauster room and Transducer Room in the prior art；
Fig. 2 is the disassembly route map of main exhauster of sintering frequency conversion tank of the present invention；
Fig. 3 is the installation route map of main exhauster of sintering frequency conversion tank of the present invention.
Label in Figure of description is as follows: main exhauster room 1, third frequency conversion tank 3, cable irrigation canals and ditches 4, is hung Transducer Room 2
Vehicle 5.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.
As shown in Fig. 2, main exhauster of sintering frequency conversion tank method for dismounting, comprising the following steps:
(1), the barrier in third frequency conversion tank 3 to gate transit route is removed；
(2), channel steel and steel plate are successively laid with from top to bottom at the cable irrigation canals and ditches 4 of transit route；Wherein channel steel uses 16#
Channel steel is crossed and is laid with channel steel and steel plate on the cable irrigation canals and ditches 4 of transportation route, avoids the damage in transportational process to cable；
(3), the cooling air channel being mounted in third frequency conversion tank 3 is removed from cabinet body；
(4), the foundation bolt in the first frequency conversion tank and the second frequency conversion tank is removed, and by the first frequency conversion tank and the second frequency conversion tank
Simultaneously to the mobile 45-55mm in the direction far from third frequency conversion tank 3, the space of the disassembly of third frequency conversion tank 3 is reserved；
(5), the foundation bolt in third frequency conversion tank 3 is removed；
(6), the jack of 6 5T is installed between third frequency conversion tank 3 and ground, starts jack, so that third frequency conversion
Cabinet 3 is raised above；
(7), rolling bar is installed in the bottom of third frequency conversion tank 3, removes jack；
(8), first the rolling of third frequency conversion tank 3 is transported between two groups of frequency-charger cabinet groups using rolling bar, then adjusts third frequency conversion
The rolling of third frequency conversion tank 3 is transported at the gate of Transducer Room 2, adjusts the rolling of 3 bottom of third frequency conversion tank again by 3 bottom rolling bar of cabinet
The rolling of third frequency conversion tank 3 is transported to outside Transducer Room 2 by thick stick；
(9), stopping outside Transducer Room 2 has crane 5, is transported through the third frequency conversion tank 3 under dismantling using crane 5.
As shown in Fig. 3, main exhauster of sintering frequency conversion tank installation method, comprising the following steps:
(1), third frequency conversion tank 3 to be installed is placed on outside Transducer Room 2 using crane 5；
(2), it removes from the barrier on third frequency conversion tank 3 placement location to installation site transit route；
(3), channel steel and steel plate are successively laid with from top to bottom on the cable irrigation canals and ditches 4 of transit route；Wherein channel steel uses 16#
Channel steel is crossed and is laid with channel steel and steel plate on the cable irrigation canals and ditches 4 of transportation route, avoids the damage in transportational process to cable；
(4), the foundation bolt in the first frequency conversion tank and the second frequency conversion tank is removed, and by the first frequency conversion tank and the second frequency conversion tank
Simultaneously to the mobile 45-55mm in the direction far from third frequency conversion tank 3, the space of the installation of third frequency conversion tank 3 is reserved；
(5), the jack of 6 5T is installed between third frequency conversion tank 3 and ground, starts jack, so that third frequency conversion
Cabinet 3 is raised above；
(6), rolling bar is installed in the bottom of third frequency conversion tank 3, removes jack；
(7), first the rolling of third frequency conversion tank 3 is transported at the gate of Transducer Room 2 using rolling bar, then adjusts third frequency conversion tank
The rolling of third frequency conversion tank 3 is transported between two groups of frequency-charger cabinet groups, adjusts the rolling of 3 bottom of third frequency conversion tank again by the rolling bar of 3 bottoms
The rolling of third frequency conversion tank 3 is transported between the second frequency conversion tank and the 4th frequency conversion tank by thick stick；The rolling bar of 3 bottom of third frequency conversion tank is adjusted, it will
The rolling of third frequency conversion tank 3 is transported to position to be installed；
(8), the rolling bar for removing 3 bottom of third frequency conversion tank installs the foundation bolt in third frequency conversion tank 3；
(9), the cooling air channel in third frequency conversion tank 3 is installed.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (5)
1. main exhauster of sintering frequency conversion tank method for dismounting, it is characterised in that: the following steps are included:
(1), the barrier in third frequency conversion tank to gate transit route is removed；
(2), channel steel and steel plate are successively laid with from top to bottom at the cable irrigation canals and ditches of transit route；
(3), the cooling air channel being mounted in third frequency conversion tank is removed from cabinet body；
(4), the foundation bolt in the first frequency conversion tank and the second frequency conversion tank is removed, and simultaneously by the first frequency conversion tank and the second frequency conversion tank
To the mobile 45-55mm in the direction far from third frequency conversion tank, the space of third frequency conversion tank disassembly is reserved；
(5), the foundation bolt in third frequency conversion tank is removed；
(6), jack is installed between third frequency conversion tank and ground, starts jack, so that third frequency conversion tank is raised above；
(7), rolling bar is installed in the bottom of third frequency conversion tank, removes jack；
(8), first the rolling of third frequency conversion tank is transported between two groups of frequency-charger cabinet groups using rolling bar, then adjusts third frequency conversion tank bottom
The rolling of third frequency conversion tank is transported at the gate of Transducer Room, adjusts the rolling bar of third frequency conversion tank bottom again, third is become by rolling bar
The rolling of frequency cabinet is transported to outside Transducer Room；
(9), stopping outside Transducer Room has crane, is transported through the third frequency conversion tank under dismantling using crane.
2. main exhauster of sintering frequency conversion tank method for dismounting according to claim 1, it is characterised in that: in step (6), adopt
It is promoted with the jack pair third frequency conversion tank of 6 5T.
3. main exhauster of sintering frequency conversion tank method for dismounting according to claim 1 or 2, it is characterised in that: in step (4)
In, it is 50mm by the mobile distance of the first frequency conversion tank and the second frequency conversion tank.
4. main exhauster of sintering frequency conversion tank installation method, it is characterised in that: the following steps are included:
(1), third frequency conversion tank to be installed is placed on outside Transducer Room using crane；
(2), the barrier on from third frequency conversion tank placement location to installation site transit route is removed；
(3), channel steel and steel plate are successively laid with from top to bottom on the cable irrigation canals and ditches of transit route；
(4), the foundation bolt in the first frequency conversion tank and the second frequency conversion tank is removed, and simultaneously by the first frequency conversion tank and the second frequency conversion tank
To the mobile 45-55mm in the direction far from third frequency conversion tank position to be installed, the space of third frequency conversion tank installation is reserved；
(5), jack is installed between third frequency conversion tank and ground, starts jack, so that third frequency conversion tank is raised above；
(6), rolling bar is installed in the bottom of third frequency conversion tank, removes jack；
(7), first the rolling of third frequency conversion tank is transported at the gate of Transducer Room using rolling bar, then adjusts third frequency conversion tank bottom
The rolling of third frequency conversion tank is transported between two groups of frequency-charger cabinet groups, the rolling bar of third frequency conversion tank bottom is adjusted again, by third by rolling bar
Frequency conversion tank rolling is transported between the second frequency conversion tank and the 4th frequency conversion tank；The rolling bar for adjusting third frequency conversion tank bottom, by third frequency conversion tank
Rolling is transported to position to be installed；
(8), the rolling bar for removing third frequency conversion tank bottom installs the foundation bolt in third frequency conversion tank；
(9), the cooling air channel in third frequency conversion tank is installed.
5. main exhauster of sintering frequency conversion tank installation method according to claim 4, it is characterised in that: in step (5), adopt
It is promoted with the jack pair third frequency conversion tank of 6 5T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710259198.9A CN107062922B (en) | 2017-04-19 | 2017-04-19 | Main exhauster of sintering frequency conversion tank disassembles and installs method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710259198.9A CN107062922B (en) | 2017-04-19 | 2017-04-19 | Main exhauster of sintering frequency conversion tank disassembles and installs method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107062922A CN107062922A (en) | 2017-08-18 |
| CN107062922B true CN107062922B (en) | 2019-02-22 |
Family
ID=59601246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710259198.9A Expired - Fee Related CN107062922B (en) | 2017-04-19 | 2017-04-19 | Main exhauster of sintering frequency conversion tank disassembles and installs method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107062922B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201198846Y (en) * | 2008-04-24 | 2009-02-25 | 力博特公司 | Fan mounting structure of air conditioner unit |
| JP2012077556A (en) * | 2010-10-05 | 2012-04-19 | Tokyo Electric Power Co Inc:The | Demolition method of steel frame building |
| CN103628710A (en) * | 2013-11-29 | 2014-03-12 | 北京金自能源科技发展有限公司 | Portable and detachable box-type medium-voltage frequency conversion chamber |
| CN203996276U (en) * | 2014-07-01 | 2014-12-10 | 马钢(集团)控股有限公司 | A kind of travelling car for the dismounting of large volume frequency converter |
| KR20150078067A (en) * | 2013-12-30 | 2015-07-08 | 현대제철 주식회사 | Multi sinter-port for sintering simulation |
| CN205304009U (en) * | 2015-12-23 | 2016-06-08 | 中山市艾能机械有限公司 | Air compressor converter flange formula mounting structure |
| CN205792074U (en) * | 2016-05-30 | 2016-12-07 | 华电（北京）热电有限公司 | A kind of horizontal machine apparatus for examination and repair |
-
2017
- 2017-04-19 CN CN201710259198.9A patent/CN107062922B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201198846Y (en) * | 2008-04-24 | 2009-02-25 | 力博特公司 | Fan mounting structure of air conditioner unit |
| JP2012077556A (en) * | 2010-10-05 | 2012-04-19 | Tokyo Electric Power Co Inc:The | Demolition method of steel frame building |
| CN103628710A (en) * | 2013-11-29 | 2014-03-12 | 北京金自能源科技发展有限公司 | Portable and detachable box-type medium-voltage frequency conversion chamber |
| KR20150078067A (en) * | 2013-12-30 | 2015-07-08 | 현대제철 주식회사 | Multi sinter-port for sintering simulation |
| CN203996276U (en) * | 2014-07-01 | 2014-12-10 | 马钢(集团)控股有限公司 | A kind of travelling car for the dismounting of large volume frequency converter |
| CN205304009U (en) * | 2015-12-23 | 2016-06-08 | 中山市艾能机械有限公司 | Air compressor converter flange formula mounting structure |
| CN205792074U (en) * | 2016-05-30 | 2016-12-07 | 华电（北京）热电有限公司 | A kind of horizontal machine apparatus for examination and repair |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107062922A (en) | 2017-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106091707B (en) | Vertical type countercurrent waste heat recovery device and method for sinter | |
| CN108239684A (en) | A kind of converter slag New Process for Treatment | |
| CN203635904U (en) | Novel welding slag ladle for copper slag slow cooling process | |
| CN105177202B (en) | A kind of blast furnace overhaul method | |
| CN104561560A (en) | Copper slag slowly-cooling treatment technology | |
| CN107062922B (en) | Main exhauster of sintering frequency conversion tank disassembles and installs method | |
| CN209069003U (en) | A kind of continuous charging pre-heating device | |
| CN202630683U (en) | Novel sintering machine loosening device | |
| CN109237950A (en) | Continuous charging pre-heating device | |
| CN103342321B (en) | The integral replacing hanging method of in-service nuclear power station steam generator | |
| CN202380029U (en) | Logistics system for charging of electric furnace in electric furnace smelting | |
| CN201713528U (en) | Distribution chute overhauling device | |
| CN203772018U (en) | Material distribution system at furnace top of submerged arc furnace | |
| CN208815048U (en) | A kind of State of Blast Furnace is interior to protect canopy support device | |
| CN203904372U (en) | Arc-shaped liner plate of integral novel blast furnace material pipe insertion piece | |
| CN102424890B (en) | Logistic system for feeding in smelting of electric furnace and feeding method thereof | |
| CN206094927U (en) | Vertical adverse current waste heat recovery device of sintering deposit | |
| CN206300469U (en) | A kind of submerged arc furnace system | |
| CN212962854U (en) | Split box-type beam structure of circular cooler hopper | |
| CN203501740U (en) | Water-cooled furnace cover of alternating-current arc furnace | |
| CN203878158U (en) | Bell-less top support frame convenient to overhaul | |
| CN204185534U (en) | A kind of diameter 40 meters of rotary hearth furnaces-molten point stove combined production line | |
| CN204396319U (en) | A kind of adjustable combined type ore deposit groove grid | |
| CN103276122A (en) | Short-process magnetic separation steel slag recovery device and method thereof | |
| CN212109564U (en) | Device for reducing ball accumulation in water seal tank of circular cooler |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190222 Termination date: 20200419 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |