CN107400754A - A kind of system and method for being used to change refining furnace rise fall of electrodes cylinder - Google Patents
A kind of system and method for being used to change refining furnace rise fall of electrodes cylinder Download PDFInfo
- Publication number
- CN107400754A CN107400754A CN201710637408.3A CN201710637408A CN107400754A CN 107400754 A CN107400754 A CN 107400754A CN 201710637408 A CN201710637408 A CN 201710637408A CN 107400754 A CN107400754 A CN 107400754A
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- Prior art keywords
- lift cylinders
- moving cart
- jack
- genuine
- tunnel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention provides a kind of system and method for being used to change refining furnace rise fall of electrodes cylinder, the characteristics of system, is, it is included in the tunnel (12) dug out in ground base and the moving cart (10) in the deep gouge of genuine (12), the characteristics of this method, is, after moving cart (10) is removed, it will be fallen on first under lift cylinders (9) in genuine (12), lift cylinders (9) are made to be less than building body, lift cylinders (9) are transported immediately below operating position to upkeep operation area then along genuine (12), new lift cylinders (9) are finally transported to operating position from upkeep operation area along genuine (12) and assembled with column.System and method provided by the invention to change the dismounting, installation and adjustment work that more serious transverse arm is taken in the completely left out conventional method of whole process of lift cylinders, so as to effectively improve the efficiency for changing lift cylinders.
Description
Technical field
The present invention relates to ladle refining furnace technical field, is used to change refining furnace rise fall of electrodes cylinder more particularly to a kind of
System and method.
Background technology
The electrode system of refining furnace includes the equipment such as transformer, short net, water-cooled cable, transverse arm, electrode mast, electrode mast
For making electrode oscilaltion, two classes are divided into structure：Vertical columns formula and active column formula.In active column formula structure
In, transverse arm and electrode mast connect into an inverted l-shaped structure, and electrode mast can be several to being lifted between directive wheel, electrode mast
Lifting generally use hydraulic transmission mode.
As shown in figure 1, ladle 1 is located at the lower section of dust excluding hood 5, dust excluding hood 5 lifts across on the dedusting track 4 of both sides
Cylinder 9 is in the lower section of building body 8, and the top of lift cylinders 9 is connected through building body 8 with column 7, and column 7 is connected to one with transverse arm 3
Rise, electrode 2 is arranged on transverse arm 3.
After production run for a period of time, the factor such as high temperature often results in lift cylinders 9 and damaged, and in order to adapt to produce, needs blowing out more
Change lift cylinders 9.Because lift cylinders 9 are higher by the part of building body 8, changed so directly can not implement to remove from the lower section of building body 8.
At present, the generally use following steps of lift cylinders 9 are changed：
In the positioned beneath jack instrument of dust excluding hood 5, the water-cooled cable 6 on transverse arm 3 is then removed, dismantles transverse arm 3 and column 7
Coupling part；
Transverse arm 3 is hung on one side in the confined space below dust excluding hood 5 using jack, then dismantles column 7 and lifting
The coupling part of cylinder 9, remove the connection pivot pin of the bottom of lift cylinders 9；
Column 7 is first hung out, then hangs out lift cylinders 9, completes to remove；
Order is removed more than, then inverted order installs new lift cylinders 9, and transverse arm 3 is adjusted, complete lift cylinders 9 more
Change jobs.
The drawbacks of above-mentioned replacing options, is that workload is larger, time-consuming longer, and workload is mainly reflected in the dismounting of transverse arm 3
And generally require 20 people mutual cooperation flower with the work such as jack integrated regulation, whole Renewal process after installation, and the installation of transverse arm 3
Take 24 hours and complete.Change the repair time it is longer manufacturing schedule can undoubtedly be had an impact, therefore, how to provide a kind of efficient
The method for changing lift cylinders, to reduce the time that Renewal process is spent, becomes those skilled in the art's skill urgently to be resolved hurrily
Art problem.
The content of the invention
In view of this, the invention provides a kind of system and method for being used to change refining furnace rise fall of electrodes cylinder, the system
And method can improve the efficiency for changing lift cylinders, the time that Renewal process is spent is reduced.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of system for changing refining furnace rise fall of electrodes cylinder, including：
At least two first jacks, first jack are used to column being locked in building body；
At least two second jacks, second jack are used to lift cylinders being locked in the column；
The tunnel dug out in ground base, described genuine one end be located at the operating position of the lift cylinders just under
Side, the other end lead to upkeep operation area, and the genuine width is more than the full-size of the cross section of the lift cylinders, describedly
The depth in road subtracts the difference of height of the building body away from the ground base more than the initial length of the lift cylinders, described
Genuine top opening has deep gouge；
Moving cart in the deep gouge, the top surface of the moving cart is concordant with the ground base, the shifting
Dynamic dolly has the supporting part for being used for being connected with the lift cylinders.
Preferably, in said system, the dolly support in the tunnel, the lower end of dolly support with it is described
Genuine bottom surface contact, upper end props up the bottom of the moving cart.
Preferably, in said system, the both sides of the moving cart have wheel.
Preferably, in said system, the dolly support is telescopic structure.
Preferably, in said system, in addition to for pulling the hoist engine of the moving cart.
A kind of method for changing refining furnace rise fall of electrodes cylinder, methods described are used as disclosed in above-mentioned any one
System, methods described include：
Step A, the column is locked on the building body with first jack, will with second jack
The lift cylinders are locked on the column；
Step B, remove the connection of the lift cylinders and fluid pressure line and the moving cart；
Step C, bearing of trend of the moving cart along the deep gouge is moved to described genuine positioned at the maintenance work
The one end in industry area；
Step D, removes the connection in addition to second jack between the lift cylinders and the column, pulls described the
Two jacks make the lift cylinders fall into the tunnel, and the lift cylinders is less than the building body, and second jack unclamps
The lift cylinders simultaneously transport the lift cylinders to the upkeep operation area along the genuine bearing of trend；
Step E, new lift cylinders are fallen into described genuine one end for being located at the upkeep operation area, by the new lifting
Cylinder lift cylinders are transported to the underface of operating position along the genuine bearing of trend, and second jack is by the new lifting
Cylinder pull-up, the new lift cylinders are installed on the column；
Step F, the moving cart is moved back to and the connection of the new lift cylinders and the moving cart is installed, installed
The fluid pressure line removes first jack and second jack in the new lift cylinders.
Preferably, in the above-mentioned methods, in the step C and/or the step F, hoist engine or the 3rd jack are passed through
Pulling make the moving cart shift position.
Preferably, in the above-mentioned methods, the step F also includes：
In the lower section installation carriage support of the moving cart, the lower end of the dolly support connects with the genuine bottom surface
Touch, upper end props up the bottom of the moving cart.
It can be seen from above-mentioned technical proposal, in the system provided by the present invention for changing refining furnace rise fall of electrodes cylinder,
Being dug in ground base has tunnel, and genuine one end is located at the underface of the operating position of lift cylinders, and the other end leads to upkeep operation
Area, the top surface of the moving cart in the deep gouge in tunnel are concordant with ground base.Moving cart, which has, to be used to connect with lift cylinders
The supporting part connect, for the lift cylinders of support works state, and genuine width is more than the full-size of the cross section of lift cylinders,
And genuine depth subtracts the difference of height of the building body away from ground base more than the initial length of lift cylinders, so will be mobile small
After car is removed, it can will first be fallen under lift cylinders in tunnel, lift cylinders is less than building body, then along tunnel by lift cylinders
Transport, new lift cylinders are finally transported to operating position along tunnel and assembled with column.As can be seen here, whole Renewal process
The dismounting, installation and adjustment work of more serious transverse arm are taken in completely left out conventional method, so as to be effectively improved
Change the efficiency of lift cylinders.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the arrangement schematic diagram of refining furnace electrode system in the prior art；
Fig. 2 is a kind of the partially schematic of system for being used to change refining furnace rise fall of electrodes cylinder provided in an embodiment of the present invention
Figure；
Fig. 3 is the partial enlarged drawing of the lower section of part 9 in Fig. 2.
In figure mark for：
1st, ladle；2nd, electrode；3rd, transverse arm；4th, dedusting track；5th, dust excluding hood；6th, water-cooled cable；7th, column；8th, building body；
9th, lift cylinders；10th, moving cart；11st, dolly supports；12nd, it is genuine.
Embodiment
In order to make it easy to understand, the invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 1~Fig. 3, Fig. 1 is the arrangement schematic diagram of refining furnace electrode system in the prior art；Fig. 2 is of the invention real
A kind of partial schematic diagram for being used to change the system of refining furnace rise fall of electrodes cylinder of example offer is provided；Fig. 3 is the lower section of part 9 in Fig. 2
Partial enlarged drawing.
The system provided in an embodiment of the present invention for being used to change refining furnace rise fall of electrodes cylinder includes at least two first jacks
(not shown), at least two second jack (not shown)s, tunnel 12 and moving cart 10.
Wherein, the first jack is used to column 7 being locked in building body 8, and the second jack is used to lock lift cylinders 9
It is fixed on column 7；
Tunnel 12 is dug out in ground base, and the one end in tunnel 12 is located at the underface of the operating position of lift cylinders 9, another
End leads to upkeep operation area, and the width in tunnel 12 is more than the full-size of the cross section of lift cylinders 9, and the depth in tunnel 12, which is more than, to be risen
The initial length of drop cylinder 9 subtracts the difference of height of the building body 8 away from ground base, and the top opening in tunnel 12 has deep gouge (in figure not
Mark)；
Moving cart 10 is located in deep gouge, and the top surface of moving cart 10 is concordant with ground base, and moving cart 10, which has, to be used
In the supporting part being connected with lift cylinders 9.
Referring to Fig. 3, tunnel 12 can also can extend along linear extension along camber line, as long as moving cart 10 can be made to exist
It is mobile in the whole process in tunnel 12.In order that mobile get off 10 is more prone to mobile, can pacify in the both sides of moving cart 10
Wheel is filled, furthermore it is also possible to be provided for pulling the hoist engine of moving cart 10.
Because the width in tunnel 12 is more than the full-size of the cross section of lift cylinders 9, so lift cylinders 9 can fall on ground down
In road 12.The initial length of lift cylinders 9 refers to, when the top of in running order lift cylinders 9 drops to minimum altitude, rises
The length of cylinder 9 drops.During working condition, even if the top of lift cylinders 9 drops to minimum altitude, lift cylinders 9 are still higher by building body 8,
In order that lift cylinders 9 can be transported smoothly after falling into tunnel 12, the depth in tunnel 12 should be more than the initial length of lift cylinders 9
Degree subtracts the difference of height of the building body 8 away from ground base.
The effect of moving cart 10 is that lift cylinders 9 are supported when lift cylinders 9 are in operating position, in order to strengthen moving
The supporting role of dynamic dolly 10,11 can be supported by installation carriage in tunnel 12, as shown in figure 3, dolly support 11 is positioned at movement
The lower section of dolly 10, the lower end of dolly support 11 contact with the bottom surface in tunnel 12, and upper end props up the bottom of moving cart 10.In order to
It is easily installed and dismantles, dolly support 11 can uses telescopic structure.
Based on the system of replacing refining furnace rise fall of electrodes cylinder provided by the invention, it is used to change present invention also offers one kind
The method of refining furnace rise fall of electrodes cylinder, this method comprise the following steps：
Column 7, is locked on building body 8 by S1 with the first jack, and lift cylinders 9 are locked with the second jack
On column 7.
In working condition, column 7 is driven by lift cylinders 9 and moved up and down, and when needing to change lift cylinders 9, is
Prevent column 7 from moving, first column 7 is locked on building body 8 with the first jack.Second jack is used for lift cylinders
Fall under 9 in tunnel 12, therefore lift cylinders 9 are locked on column 7 with the second jack first.
S2, remove the connection of lift cylinders 9 and fluid pressure line and moving cart 10.
When lift cylinders 9 are in operating position, fluid pressure line is connected with lift cylinders 9, moreover, moving cart 10 also with liter
The bottom of drop cylinder 9 is fixedly connected.When needing to transport lift cylinders 9, lift cylinders 9 and the connection of fluid pressure line should be torn open first
Remove.
Moving cart 10 is played a supporting role to the lift cylinders 9 of working condition, and when changing lift cylinders 9, it is necessary to first will
Moving cart 10 is removed, and is fallen under such ability of lift cylinders 9 in tunnel 12, so should be lift cylinders 9 and moving cart 10
Connection is removed.If the lower section of moving cart 10 has dolly to support 11, the dolly branch of the lower section of moving cart 10 now should be also removed
Support 11.
S3, bearing of trend of the moving cart 10 along deep gouge is moved to tunnel 12 positioned at the one end in upkeep operation area.
Lift cylinders 9 can be fallen on down in tunnel 12 after removing moving cart 10, moreover, lift cylinders 9 are along tunnel 12
Transport, therefore there can not be stop in the whole process in tunnel 12, make so moving cart 10 is moved on to tunnel 12 by needs positioned at maintenance
The one end in industry area.
In specific practical application, moving cart 10 can be pulled by hoist engine or the 3rd jack.
S4, the connection in addition to the second jack between lift cylinders 9 and column 7 is removed, pulls the second jack to fall lift cylinders 9
Enter tunnel 12, and lift cylinders 9 be less than building body 8, the second jack unclamps lift cylinders 9 and by extension of the lift cylinders 9 along genuine 12
Direction is transported to upkeep operation area.
Due to lower than building body 8 after genuine 12 are fallen under lift cylinders 9, so lift cylinders 9 smoothly can be transported along tunnel 12
Go out.
S5, new lift cylinders 9 are fallen into tunnel 12 positioned at the one end in upkeep operation area, by the new edge of 9 lift cylinders of lift cylinders 9
The bearing of trend in tunnel 12 is transported to the underface of operating position, and the second jack is by the new pull-up of lift cylinders 9, by new lift cylinders
9 are installed on column 7.
New lift cylinders 9 are equally transported along tunnel 12, the underface of operating position can be reached by upkeep operation area, so
Assembled afterwards by the second jack pull-up and with column 7, the installation on the top of so new lift cylinders 9 can be completed.
S6, moving cart 10 is moved back to and the connection of new lift cylinders 9 and moving cart 10 is installed, installation fluid pressure line arrives
In new lift cylinders 9, the first jack and the second jack are removed.
The bottoms of new lift cylinders 9 needs to be supported by moving cart 10, therefore first moving cart 10 from upkeep operation area
The underface of the operating position of lift cylinders 9 is moved back into, then connects moving cart 10 and new lift cylinders 9.If moving cart 10
Lower section has dolly to support 11, and dolly now should also be supported to 11 lower sections for moving back to moving cart 10.It is moved back to moving cart 10
When, moving cart 10 can be pulled by hoist engine or the 3rd jack.
After the upper and lower part of new lift cylinders 9 has all connected, fluid pressure line is installed in new lift cylinders 9, most
After remove the first jack and the second jack, whole Renewal process can be completed.
In system provided by the present invention for changing refining furnace rise fall of electrodes cylinder, being dug in ground base has tunnel 12,
The one end in tunnel 12 is located at the underface of the operating position of lift cylinders 9, and the other end leads to upkeep operation area, positioned at the heavy of tunnel 12
The top surface of moving cart 10 in groove is concordant with ground base.Moving cart 10 has the supporting part for being used for being connected with lift cylinders 9,
For the lift cylinders 9 of support works state, and the width in tunnel 12 is more than the full-size of the cross section of lift cylinders 9, and genuine
The initial length that 12 depth is more than lift cylinders 9 subtracts the difference of height of the building body 8 away from ground base, so by moving cart
After 10 remove, it can will first be fallen under lift cylinders 9 in tunnel 12, lift cylinders 9 is less than building body 8, then along tunnel 12
Lift cylinders are transported, new lift cylinders 9 are finally transported to operating position along tunnel 12 and assembled with column 7.As can be seen here,
The dismounting, installation and adjustment work of more serious transverse arm 3 are taken in the completely left out conventional method of whole Renewal process, so as to
It is effectively improved the efficiency for changing lift cylinders.Practice have shown that method provided by the invention is simple to operate, it is easy to control, it is only necessary to 8
People spends 6 hours can complete more changing jobs for lift cylinders.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to embodiment will be apparent for those skilled in the art, as defined herein general
Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will not
Embodiment illustrated herein can be restricted to, and is to fit to consistent with principles disclosed herein and features of novelty most wide
Scope.
Claims (8)
- A kind of 1. system for changing refining furnace rise fall of electrodes cylinder, it is characterised in that including：At least two first jacks, first jack are used to column (7) being locked in building body (8)；At least two second jacks, second jack are used to lift cylinders (9) being locked in the column (7)；The tunnel (12) dug out in ground base, one end of the tunnel (12) are located at the operating position of the lift cylinders (9) Underface, the other end leads to upkeep operation area, and the width of the tunnel (12) is more than the cross section of the lift cylinders (9) most Large scale, the depth of the tunnel (12) subtract the building body (8) away from described more than the initial length of the lift cylinders (9) The difference of the height on face basis, the top opening of the tunnel (12) have deep gouge；Moving cart (10) in the deep gouge, the top surface of the moving cart (10) is concordant with the ground base, institute Stating moving cart (10) has the supporting part for being used for being connected with the lift cylinders (9).
- 2. system according to claim 1, it is characterised in that also include the dolly support in genuine (12) (11), the lower end of the dolly support (11) contacts with the bottom surface of genuine (12), and upper end props up the moving cart (10) Bottom.
- 3. system according to claim 1, it is characterised in that the both sides of the moving cart (10) have wheel.
- 4. system according to claim 1, it is characterised in that the dolly support (11) is telescopic structure.
- 5. system according to claim 1, it is characterised in that also include being used for the elevator for pulling the moving cart (10) Machine.
- A kind of 6. method for changing refining furnace rise fall of electrodes cylinder, it is characterised in that methods described use as claim 1~ System described in any one, methods described include in 5：Step A, the column (7) is locked on the building body (8) with first jack, with second jack The lift cylinders (9) are locked on the column (7)；Step B, remove the connection of the lift cylinders (9) and fluid pressure line and the moving cart (10)；Step C, bearing of trend of the moving cart (10) along the deep gouge is moved to described genuine (12) and is located at the inspection Repair one end of operation area；Step D, removes the connection in addition to second jack between the lift cylinders (9) and the column (7), described in pulling Second jack makes the lift cylinders (9) fall into genuine (12), and the lift cylinders (9) is less than the building body (8), institute The second jack is stated to unclamp the lift cylinders (9) and transport bearing of trend of the lift cylinders (9) along genuine (12) to institute State upkeep operation area；Step E, new lift cylinders (9) are fallen into one end that described genuine (12) be located at the upkeep operation area, by it is described newly Bearing of trend of lift cylinders (9) lift cylinders (9) along genuine (12) is transported to the underface of operating position, second jack By described new lift cylinders (9) pull-up, the new lift cylinders (9) are installed on the column (7)；Step F, the moving cart (10) is moved back to and the company of the new lift cylinders (9) and the moving cart (10) is installed Connect, the fluid pressure line is installed to the new lift cylinders (9), remove first jack and second jack.
- 7. according to the method for claim 6, it is characterised in that in the step C and/or the step F, pass through elevator The pulling of machine or the 3rd jack makes the moving cart (10) shift position.
- 8. according to the method for claim 6, it is characterised in that the step F also includes：In the lower section installation carriage support (11) of the moving cart (10), the lower end and the tunnel of the dolly support (11) (12) bottom surface contact, upper end props up the bottom of the moving cart (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637408.3A CN107400754B (en) | 2017-07-31 | 2017-07-31 | It is a kind of for replacing the system and method for refining furnace rise fall of electrodes cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637408.3A CN107400754B (en) | 2017-07-31 | 2017-07-31 | It is a kind of for replacing the system and method for refining furnace rise fall of electrodes cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107400754A true CN107400754A (en) | 2017-11-28 |
| CN107400754B CN107400754B (en) | 2019-03-19 |
Family
ID=60401759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710637408.3A Active CN107400754B (en) | 2017-07-31 | 2017-07-31 | It is a kind of for replacing the system and method for refining furnace rise fall of electrodes cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN107400754B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201756567U (en) * | 2010-06-25 | 2011-03-09 | 鞍钢股份有限公司 | Novel RH communicating pipe replacing vehicle |
| CN102896489A (en) * | 2011-07-27 | 2013-01-30 | 上海宝冶集团有限公司 | Quick changing method of AGC (automatic gain control) cylinders for wide and thick plate finishing mill |
| CN204690033U (en) * | 2015-04-27 | 2015-10-07 | 鞍钢股份有限公司 | Accident state refining electrode extractor |
| CN105506225A (en) * | 2015-12-30 | 2016-04-20 | 中冶南方工程技术有限公司 | Molten iron desulfurization stirring head replacement device and stirring head replacement method |
| CN205799359U (en) * | 2016-06-27 | 2016-12-14 | 河北钢铁股份有限公司承德分公司 | Hoist cylinder seal nipple quick replacement device |
-
2017
- 2017-07-31 CN CN201710637408.3A patent/CN107400754B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201756567U (en) * | 2010-06-25 | 2011-03-09 | 鞍钢股份有限公司 | Novel RH communicating pipe replacing vehicle |
| CN102896489A (en) * | 2011-07-27 | 2013-01-30 | 上海宝冶集团有限公司 | Quick changing method of AGC (automatic gain control) cylinders for wide and thick plate finishing mill |
| CN204690033U (en) * | 2015-04-27 | 2015-10-07 | 鞍钢股份有限公司 | Accident state refining electrode extractor |
| CN105506225A (en) * | 2015-12-30 | 2016-04-20 | 中冶南方工程技术有限公司 | Molten iron desulfurization stirring head replacement device and stirring head replacement method |
| CN205799359U (en) * | 2016-06-27 | 2016-12-14 | 河北钢铁股份有限公司承德分公司 | Hoist cylinder seal nipple quick replacement device |
Non-Patent Citations (1)
| Title |
|---|
| 唐易荣等: "柱塞式油缸在线更换密封法", 《中国设备工程》 * |
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| Publication number | Publication date |
|---|---|
| CN107400754B (en) | 2019-03-19 |
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