CN207143083U - A kind of glass electric furnace molybdenum electrode device - Google Patents
A kind of glass electric furnace molybdenum electrode device Download PDFInfo
- Publication number
- CN207143083U CN207143083U CN201721900731.7U CN201721900731U CN207143083U CN 207143083 U CN207143083 U CN 207143083U CN 201721900731 U CN201721900731 U CN 201721900731U CN 207143083 U CN207143083 U CN 207143083U
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- Prior art keywords
- steel plate
- plate ring
- steel
- pipe
- molybdenum electrode
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- 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
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 73
- 239000011733 molybdenum Substances 0.000 title claims abstract description 73
- 239000011521 glass Substances 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 216
- 239000010959 steel Substances 0.000 claims abstract description 216
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 238000005507 spraying Methods 0.000 claims description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 239000000498 cooling water Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000011449 brick Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010504 bond cleavage reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
It the utility model is related to a kind of glass electric furnace molybdenum electrode device, include electrode water jacket and molybdenum electrode bar, electrode water jacket is by the first steel plate ring, second steel plate ring and the 3rd steel plate ring, first steel pipe and the second steel pipe are formed, first steel plate ring is fixed on first steel one end, 3rd steel plate ring is fixed in the first steel pipe and close to the first steel pipe other end, second steel plate ring is fixed in the first steel pipe and between the first steel plate ring and the 3rd steel plate ring, second steel pipe is located in the first steel pipe, and second steel pipe one end be connected with the first steel plate ring, the other end is connected with the second steel plate ring, molybdenum electrode bar sequentially passes through the first steel plate ring, second steel pipe, second steel plate ring and the 3rd steel plate ring, and it is tightly connected respectively with the second steel plate ring and the 3rd steel plate ring.The utility model advantage is：Simple in construction, resistance to high temperature oxidation is good, molybdenum electrode service life length, can improve the furnace wall cooling effect around molybdenum electrode and molybdenum electrode, effectively molybdenum electrode can be prevented to be broken because of high-temperature oxydation.
Description
Technical field
It the utility model is related to glass electric furnace field, and in particular to a kind of glass electric furnace molybdenum electrode device.
Background technology
The application of glass electric furnace is more and more wider, and the molybdenum electrode protection technique to match therewith also increasingly seems heavy
Will.Using molybdenum electrode come in the electric smelter of fusion cast glass, the service life of molybdenum electrode directly affects the service life of smelting furnace
And product quality.Inappropriate molybdenum electrode protection technique often produces the accidents such as the oxidized, fracture of electrode and occurred.Have a strong impact on
The quality of glassware and add cost.
Existing electrode water jacket, there is a segment electrode to be protected by water jacket between water jacket and glass metal, at this electrode and
The temperature of furnace wall of its surrounding them is high so that the cooling water circulated in electrode water jacket cooling water channel is cold to electrode water jacket upper end
But effect is undesirable, and the furnace wall of surrounding them easily cracks, and influences electric smelter service life.
Utility model content
The purpose of this utility model is the provision of a kind of simple in construction, can effectively prevent each position oxidation of molybdenum electrode,
And the furnace wall cooling effect of electrode and surrounding them is improved, prevent molybdenum electrode oxidation scission from falling into electric smelter, extend molybdenum electrode
The glass electric furnace molybdenum electrode device of service life, the defects of to solve to overcome in the presence of background technology.
To solve the above problems, the utility model adopts the technical scheme that：A kind of glass electric furnace molybdenum electrode device, bag
Containing electrode water jacket and molybdenum electrode bar, the electrode water jacket is by the first steel plate ring, the second steel plate ring and the 3rd steel plate ring, the first steel pipe
And second steel pipe form, the first steel plate ring is fixed on described first steel one end, and the 3rd steel plate ring is fixed on described the
In one steel pipe and close to the first steel pipe other end, the second steel plate ring is fixed in first steel pipe and positioned at described first
Between steel plate ring and the 3rd steel plate ring, second steel pipe is located in first steel pipe, and described second steel pipe one end with
The first steel plate ring connection, the other end are connected with the second steel plate ring, and the molybdenum electrode bar sequentially passes through first steel
Plate ring, the second steel pipe, the second steel plate ring and the 3rd steel plate ring simultaneously connect with the second steel plate ring and the sealing of the 3rd steel plate ring respectively
Connect.
Further, one has also been connected through a screw thread on one end that the molybdenum electrode bar is tightly connected with the 3rd steel plate ring to draw
Bar.
Further, it is provided with and first annular cooling duct and begins to speak between the first steel plate ring and the second steel plate ring, described the
One annular cooling duct is looped around between first steel pipe and the second steel pipe, described to begin to speak by second steel pipe, the first steel plate
Ring and the second steel plate collar into.
Further, the second annular cooling duct, second annular are provided between the second steel plate ring and the second steel plate ring
Cooling duct is looped around between the molybdenum electrode bar and the first steel pipe.
Further, the first annular cooling duct is also associated with the first water inlet pipe and the first outlet pipe, first water inlet
The pipe mouth of pipe leans on to be leaned on into the second steel plate ring into the first steel plate ring, the mouth of pipe of first outlet pipe.
Further, the described second annular cooling duct is also associated with the second water inlet pipe, the 3rd water inlet pipe and the second outlet pipe, institute
The mouth of pipe of the mouth of pipe and the 3rd water inlet pipe of stating the second water inlet pipe is close to the second steel plate ring, the mouth of pipe of second outlet pipe
Close to the 3rd steel plate ring.
Further, several hole for water sprayings are further opened with second water inlet pipe and the 3rd water inlet pipe, and it is each described
Hole for water spraying is respectively positioned in the described second annular cooling duct.
Further, the inner ring footpath of the first steel plate ring is equal with caliber in second steel pipe and is all higher than the molybdenum electricity
The external diameter of pole rod, the external loop diameter of the first steel plate ring are equal with the first steel pipe outer tube diameter.
Further, interior caliber phase of the external loop diameter of the second steel plate ring and the 3rd steel plate ring with first steel pipe
Caliber in equal with the inner ring footpath of the 3rd steel plate ring Deng, the inner ring footpath of the second steel plate ring and respectively less than described second steel pipe.
Further, the first steel plate ring uses high-temperature alloy steel, the second steel plate ring, the 3rd steel plate ring, first
Steel pipe and the second steel pipe use common alloy steel.
Compared with prior art, the beneficial effects of the utility model are：
1st, glass is passed through by beginning to speak of being surrounded to the first steel plate ring, the second steel pipe, molybdenum electrode bar and the second steel plate ring
Liquid, and the first steel plate ring, the first steel pipe, the second steel pipe and the second steel plate ring surround closed ring cooling duct to molybdenum electrode bar
Top carries out indirect water-cooling but, and can effectively protect the upper end of molybdenum electrode device will not aoxidize at high temperature；
2nd, cooled down by the second annular surrounded by the second steel plate ring, the first steel pipe, the second steel plate ring and molybdenum electrode bar
Road carries out direct water-cooling but to molybdenum electrode bar bottom, can not only improve the cooling effect to molybdenum electrode bar bottom, can also realize pair
Molybdenum electrode device and be connected with molybdenum electrode device furnace wall position carry out effective temperature-reducing protection, set so as to effectively extend electric smelter
Standby service life；
3rd, two independent cooling water roads are divided into by the cooling water channel in electrode water jacket, respectively to electrode water jacket and molybdenum electricity
The both ends of pole rod carry out water flowing cooling, effectively raise the cooling effect of electrode water jacket.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model glass electric furnace molybdenum electrode device；
Fig. 2 is the structural representation of the utility model glass electric furnace molybdenum electrode device electrode water jacket；
Fig. 3 be Fig. 2 A-A to diagrammatic cross-section；
Fig. 4 is the diagrammatic cross-section of Fig. 2 B-B direction；
Fig. 5 is the mounting structure schematic diagram that the utility model uses in glass electric furnace；
In figure：1st, electrode water jacket；1-1, the first steel plate ring；1-2, the second steel plate ring；1-3, the 3rd steel plate ring；1-4, first
Steel pipe；1-5, the second steel pipe；2nd, molybdenum electrode bar；3rd, first annular cooling duct；4th, the second annular cooling duct；5th, the first water inlet pipe；
6th, the first outlet pipe；7th, the second water inlet pipe；8th, the 3rd water inlet pipe；9th, the second outlet pipe；10th, hole for water spraying；11st, lead rod；12nd, protect
Warm wall；13rd, AZS wall bricks；14th, glass metal；15th, begin to speak.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments：
As shown in Figure 1 to Figure 2, a kind of glass electric furnace molybdenum electrode device provided by the utility model, includes electrode water jacket 1
And molybdenum electrode bar 2, electrode water jacket 1 is by the first steel plate ring 1-1, the second steel plate ring 1-2 and the 3rd steel plate ring 1-3, the first steel pipe 1-4
And second steel pipe 1-5 form, the first steel plate ring 1-1 is fixed on first steel pipe 1-4 one end, and the 3rd steel plate ring 1-2 is fixed on first
In steel pipe 1-4 and close to the first steel pipe 1-4 other ends, the second steel plate ring (1-4) is fixed in the first steel pipe 1-4 and positioned at the
Between one steel plate ring 1-1 and the 3rd steel plate ring 1-3, the second steel pipe 1-5 is located in the first steel pipe 1-4, and the second steel pipe
1-5 one end is connected with the first steel plate ring 1-1, and the other end is connected with the second steel plate ring 1-2, and molybdenum electrode bar 2 sequentially passes through the first steel
Plate ring 1-1, the second steel pipe 1-5, the second steel plate ring 1-2 and the 3rd steel plate ring 1-3 and respectively with the second steel plate ring 1-2 and the 3rd
Steel plate ring 1-3 is tightly connected.
As shown in figure 1, also it has been connected through a screw thread on one end that molybdenum electrode bar 2 is tightly connected with the 3rd steel plate ring 1-3
One lead rod 11.
As shown in figure 1, first annular cooling duct 3 is provided between the first steel plate ring 1-1 and the second steel plate ring 1-2 and is begun to speak
15, the first annular cooling duct 3 is looped around between the first steel pipe 1-4 and the second steel pipe 1-5, begins to speak 15 by the second steel pipe 1-5,
One steel plate ring 1-1 and the second steel plate ring 1-2 are surrounded.
As shown in figure 1, being provided with the second annular cooling duct 4 between the second steel plate ring 1-4 and the second steel plate ring 1-5, this second
Annular cooling duct 3 is looped around between the steel pipe 1-4 of molybdenum electrode bar 2 and first.
As shown in figures 1 and 3, first annular cooling duct 3 is also associated with the first water inlet pipe 5 and the first outlet pipe 6, and
The mouth of pipe of one water inlet pipe 5 leans on to be leaned on into the second steel plate ring 1-2 into the first steel plate ring 1-1, the mouth of pipe of the first outlet pipe 6.
As shown in Figure 1 and Figure 4, the second annular cooling duct 4 is also associated with the second water inlet pipe 7, the 3rd water inlet pipe 8 and second gone out
Water pipe 9, and the mouth of pipe of the second water inlet pipe 7 and the mouth of pipe of the 3rd water inlet pipe 8 are close to the second steel plate ring 1-2, the second outlet pipe 9
The mouth of pipe close to the 3rd steel plate ring 1-3.
As depicted in figs. 1 and 2, several hole for water sprayings 10 are further opened with the second water inlet pipe 7 and the 3rd water inlet pipe 8, and
Each hole for water spraying 3 is respectively positioned in the second annular cooling duct 4.
As shown in Fig. 2 the first steel plate ring 1-1 inner ring footpath is equal with caliber in the second steel pipe 1-5 and is all higher than molybdenum electrode
The external diameter of rod 2, the first steel plate ring 1-1 external loop diameter are equal with the first steel pipe 1-4 outer tube diameters.
As shown in Fig. 2 interior caliber of the second steel plate ring 1-2 and the 3rd steel plate ring the 1-3 external loop diameter with the first steel pipe 1-4
Equal, the second steel plate ring 1-2 inner ring footpath is equal with the 3rd steel plate ring 1-3 inner ring footpath and respectively less than the second steel pipe 1-5 inner tubes
Footpath.
In glass electric furnace molybdenum electrode device provided by the utility model, the first steel plate ring 1-1 closes using high temperature resistant
Jin Gang is made, and the second steel plate ring 1-2, the 3rd steel plate ring 1-3, the first steel pipe 1-4 and the second steel pipe 1-5 close using common
Jin Gang is made.
To ensure that the device is impermeable at high water pressures, electrode water jacket 1 uses being directly welded to connect with molybdenum electrode bar 2.
Glass electric furnace molybdenum electrode device of the present utility model, in actual use, installation process, as shown in figure 5, first will
This glass electric furnace molybdenum electrode device is arranged in the electrode hole opened up on insulated wall 12 and AZS wall bricks 13, and allows electrode water jacket
1 one end and one end of molybdenum electrode bar 2 provided with the first steel plate ring 1-1 contacts with glass metal 14, then allows the another of molybdenum electrode bar 2
One end is connected through a screw thread with lead rod 11, most relief lead rod 7 and power on, is started working.
The concrete operating principle of glass electric furnace molybdenum electrode device provided by the utility model is as follows：
First electrode water jacket 1 is provided with one end insertion glass metal 14 of the first steel plate ring 13, allows glass metal 14 to enter the
What one steel plate ring 1-1 and the second steel pipe 1-5 and molybdenum electrode bar 2 were surrounded begin to speak in 15；
Then, while to being enclosed by the first steel plate ring 1-1, the second steel pipe 1-4, the second steel pipe 1-5 and the second steel plate ring 1-2
Into first annular cooling duct 3 cooling water is passed through by the first water inlet pipe 5, and to by the second steel plate ring 1-2, the first steel pipe 1-4,
The second annular cooling duct 4 that the steel plate ring 1-3 of molybdenum electrode bar 2 and the 3rd is surrounded passes through the second water inlet pipe 7 and the 3rd water inlet pipe 8
It is passed through cooling water；
Allow the cooling water entered in first annular cooling duct 3 to be pointed to the part of molybdenum electrode bar 2 begun to speak in 15 to carry out
Cooling indirectly, and allow glass metal 14 to be pointed to the part of molybdenum electrode bar 2 begun to speak in 15 and carry out high-temperature oxydation protection, concurrently
The AZS wall bricks 13 that cooling water in the first annular cooling duct 3 can also be pointed to around electrode water jacket 1 are cooled down, and can be had
Effect prevents the AZS wall bricks 13 around electrode water jacket 1 from being damaged because of localized hyperthermia；
The cooling water flowed through in the first water inlet pipe 7 and the 3rd water inlet pipe 8 is allowed to pass through the first water inlet pipe 7 and the 3rd water inlet pipe 8
The part of molybdenum electrode bar 2 that the upper hole for water spraying 10 opened up respectively is pointed in the second annular cooling duct 4 carries out direct spray cooling,
Concurrently the cooling water in the second annular cooling duct 4 can also be pointed to the AZS wall bricks 13 around electrode water jacket 1 and insulation
Wall 12 is cooled down.
Glass electric furnace molybdenum electrode device provided by the utility model can carry out cooling guarantor to each position of molybdenum electrode bar 2
Shield, while the wall that can be also pointed to around molybdenum electrode bar carries out cooling down, can effectively avoid molybdenum electrode bar 2 from being oxidized, and
Extend its service life.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent substitution, without departing from the objective and model of technical solutions of the utility model
Enclose, it all should cover in right of the present utility model.
Claims (10)
1. a kind of glass electric furnace molybdenum electrode device, include electrode water jacket (1) and molybdenum electrode bar (2), it is characterised in that：The electricity
Pole water jacket (1) is by the first steel plate ring (1-1), the second steel plate ring (1-2) and the 3rd steel plate ring (1-3), the first steel pipe (1-4) and
Two steel pipes (1-5) are formed, and the first steel plate ring (1-1) is fixed on described first steel pipe (1-4) one end, the 3rd steel plate ring
(1-3) is fixed in first steel pipe (1-4) and close to the first steel pipe (1-4) other end, the second steel plate ring (1-2) is admittedly
It is scheduled in first steel pipe (1-4) and between the first steel plate ring (1-1) and the 3rd steel plate ring (1-3), described the
Two steel pipes (1-5) are located in first steel pipe (1-4), and described second steel pipe (1-5) one end and the first steel plate ring
(1-1) is connected, and the other end is connected with the second steel plate ring (1-2), and the molybdenum electrode bar (2) sequentially passes through first steel plate
Ring (1-1), the second steel pipe (1-5), the second steel plate ring (1-2) and the 3rd steel plate ring (1-3) and respectively with the second steel plate ring
(1-2) and the 3rd steel plate ring (1-3) are tightly connected.
2. glass electric furnace molybdenum electrode device according to claim 1, it is characterised in that：The molybdenum electrode bar (2) with
A lead rod (11) has also been connected through a screw thread on one end that 3rd steel plate ring (1-3) is tightly connected.
3. glass electric furnace molybdenum electrode device according to claim 1, it is characterised in that：The first steel plate ring (1-1)
And second be provided with first annular cooling duct (3) between steel plate ring (1-2) and begin to speak (15), first annular cooling duct (3) ring
It is wound between first steel pipe (1-4) and the second steel pipe (1-5), begin to speak (15) are by second steel pipe (1-5), first
Steel plate ring (1-1) and the second steel plate ring (1-2) surround.
4. glass electric furnace molybdenum electrode device according to claim 1, it is characterised in that：The second steel plate ring (1-2)
The second annular cooling duct (4) is provided between the second steel plate ring (1-3), the second annular cooling duct (3) is looped around the molybdenum
Between electrode bar (2) and the first steel pipe (1-4).
5. glass electric furnace molybdenum electrode device according to claim 3, it is characterised in that：The first annular cooling duct
(3) the first water inlet pipe (5) and the first outlet pipe (6) are also associated with, the first water inlet pipe (5) mouth of pipe is leaned on into first steel plate
Ring (1-1), the mouth of pipe of first outlet pipe (6) are leaned on into the second steel plate ring (1-2).
6. glass electric furnace molybdenum electrode device according to claim 4, it is characterised in that：The second annular cooling duct
(4) the second water inlet pipe (7), the 3rd water inlet pipe (8) and the second outlet pipe (9), the mouth of pipe of second water inlet pipe (7) are also associated with
The second steel plate ring (1-2) is close to the mouth of pipe of the 3rd water inlet pipe (8), the mouth of pipe of second outlet pipe (9) is close to institute
State the 3rd steel plate ring (1-3).
7. glass electric furnace molybdenum electrode device according to claim 6, it is characterised in that：Second water inlet pipe (7) with
Several hole for water sprayings (10) are further opened with 3rd water inlet pipe (8), and each hole for water spraying (10) is respectively positioned on described second
In annular cooling duct (4).
8. glass electric furnace molybdenum electrode device according to claim 1, it is characterised in that：The first steel plate ring (1-1)
Inner ring footpath it is equal with the interior caliber of second steel pipe (1-5) and be all higher than the external diameter of the molybdenum electrode bar (2), first steel
The external loop diameter of plate ring (1-1) is equal with the first steel pipe (1-4) outer tube diameter.
9. glass electric furnace molybdenum electrode device according to claim 1, it is characterised in that：The second steel plate ring (1-2)
And the 3rd steel plate ring (1-3) external loop diameter it is equal with the interior caliber of first steel pipe (1-4), the second steel plate ring (1-
2) inner ring footpath is equal with the inner ring footpath of the 3rd steel plate ring (1-3) and the respectively less than interior caliber of second steel pipe (1-5).
10. glass electric furnace molybdenum electrode device according to claim 1, it is characterised in that：The first steel plate ring (1-1)
Using high-temperature alloy steel, the second steel plate ring (1-2), the 3rd steel plate ring (1-3), the first steel pipe (1-4) and the second steel pipe
(1-5) uses common alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721900731.7U CN207143083U (en) | 2017-12-29 | 2017-12-29 | A kind of glass electric furnace molybdenum electrode device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721900731.7U CN207143083U (en) | 2017-12-29 | 2017-12-29 | A kind of glass electric furnace molybdenum electrode device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207143083U true CN207143083U (en) | 2018-03-27 |
Family
ID=61668714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721900731.7U Expired - Fee Related CN207143083U (en) | 2017-12-29 | 2017-12-29 | A kind of glass electric furnace molybdenum electrode device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207143083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054395A (en) * | 2019-06-03 | 2019-07-26 | 山东力诺特种玻璃股份有限公司 | Electric smelter electrode water sleeve installation method |
-
2017
- 2017-12-29 CN CN201721900731.7U patent/CN207143083U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054395A (en) * | 2019-06-03 | 2019-07-26 | 山东力诺特种玻璃股份有限公司 | Electric smelter electrode water sleeve installation method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180327 |