CN104019362B - Asphalt delivery method and induction system - Google Patents
Asphalt delivery method and induction system Download PDFInfo
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- CN104019362B CN104019362B CN201410256258.8A CN201410256258A CN104019362B CN 104019362 B CN104019362 B CN 104019362B CN 201410256258 A CN201410256258 A CN 201410256258A CN 104019362 B CN104019362 B CN 104019362B
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- holding vessel
- colophonium
- stop valve
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- treatment device
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Abstract
The invention discloses a kind of asphalt delivery method and induction system, wherein, the method includes: step a, tar oil treatment device carry Colophonium in the first holding vessel；Step b, when the bitumen level in the first holding vessel reaches the first setting value, stop to the first holding vessel conveying Colophonium, now tar oil treatment device carry Colophonium in the second holding vessel, and makes the first holding vessel to Colophonium prilling granulator conveying Colophonium；Step c, when the bitumen level in the second holding vessel reaches the second setting value, stop to the second holding vessel conveying Colophonium, now tar oil treatment device carry Colophonium in the first holding vessel, and makes the second holding vessel to Colophonium prilling granulator conveying Colophonium.The asphalt delivery method of present invention offer and induction system are by arranging the first holding vessel and the second holding vessel and multiple stop valve, two holding vessels are made alternately to store Colophonium and alternately carry Colophonium to Colophonium prilling granulator, eliminate centrifugal pump of the prior art or screw pump, it is to avoid mechanical breakdown.
Description
Technical field
The present invention relates to asphalt delivery technology, particularly relate to a kind of asphalt delivery method and induction system.
Background technology
Coal tar pitch is the black thing remaining in distillating still after the side-product of coking, i.e. tar distillation
Matter, in coal tar hydrogenating unit, the high softening point bitumen produced is carried out conveying is hydrogenation plant
The difficult problem faced.
In prior art, majority is the conveying being carried out Colophonium by centrifugal pump or screw pump, i.e.
Centrifugal pump or screw pump, and conveying pipe are set between tar oil treatment device and Colophonium prilling granulator
Road, is sent to Colophonium prilling granulator by the Colophonium of output in tar oil treatment device.
But, owing to asphalt viscosity is big, softening point is high, as easy as rolling off a log mechanical seal or the screw rod of causing
Damage, thus cause pump fault, make Colophonium to carry, even result in Colophonium blocking conveying pipe
Road.
Summary of the invention
The present invention provides a kind of asphalt delivery method and induction system, to solve of the prior art asking
Topic, reduces the asphalt delivery difficulty caused because of mechanical breakdown, improves quantity-produced ability.
The invention provides a kind of asphalt delivery method, wherein, preferred thing, comprise the steps:
Step a, tar oil treatment device carry Colophonium in the first holding vessel；
Step b, when the bitumen level in described first holding vessel reaches the first setting value, at tar
Reason device stops to the first holding vessel conveying Colophonium, and now tar oil treatment device is in the second holding vessel
Conveying Colophonium, and make described first holding vessel carry Colophonium to Colophonium prilling granulator；
Step c, when the bitumen level in described second holding vessel reaches the second setting value, at tar
Reason device stops to the second holding vessel conveying Colophonium, and now tar oil treatment device is in the first holding vessel
Conveying Colophonium, and make described second holding vessel carry Colophonium to Colophonium prilling granulator.
Asphalt delivery method as above, these, it is preferred to, described step a specifically includes:
Step a1, open the first stop valve, make tar oil treatment device carry drip in the first holding vessel
Blue or green；
If obtaining air pressure in step a2 the first holding vessel to be more than setting value, then open the second stop valve,
The first holding vessel is made to communicate with air.
Asphalt delivery method as above, these, it is preferred to, described step b specifically includes:
Step b1, when the bitumen level in described first holding vessel reaches the first setting value, close
First stop valve, makes tar oil treatment device stop, to the first holding vessel conveying Colophonium, now opening the
Three stop valves, tar oil treatment device carries Colophonium in the second holding vessel, and opens the 4th stop valve,
The first holding vessel is made to carry Colophonium to Colophonium prilling granulator；
Step b2, when the first holding vessel to Colophonium prilling granulator conveying Colophonium after, open second
Stop valve, is in normal pressure in making the first holding vessel；
Step b3, close the second stop valve, make the first holding vessel stand by.
Asphalt delivery method as above, these, it is preferred to, described step c specifically includes:
Step c1, when the bitumen level in described second holding vessel reaches the second setting value, close
3rd stop valve, makes tar oil treatment device stop, to the second holding vessel conveying Colophonium, now opening the
One stop valve, tar oil treatment device carries Colophonium in the first holding vessel, and opens the 5th stop valve,
Described second holding vessel is made to carry Colophonium to Colophonium prilling granulator；
Step c2, when the second holding vessel to Colophonium prilling granulator conveying Colophonium after, open the 6th
Stop valve, is in normal pressure in making the second holding vessel；
Step c3, closedown the 6th stop valve, make the second holding vessel stand by.
Asphalt delivery method as above, these, it is preferred to, also include: adjust first-class
Control valve, carries Colophonium to the first holding vessel or the second holding vessel controlling tar oil treatment device
Flow velocity.
Asphalt delivery method as above, these, it is preferred to, also include: adjust second
Control valve, to control the first holding vessel or the second holding vessel to Colophonium prilling granulator conveying Colophonium
Flow velocity.
Present invention also offers a kind of asphalt delivery system, including tar oil treatment device and Colophonium pelletize
Device, wherein, described induction system includes: the first holding vessel and the second holding vessel, described first
Holding vessel and the second holding vessel are respectively by the first stop valve and the 3rd stop valve and tar oil treatment device
It is connected, and described first holding vessel and the second holding vessel are respectively by the 4th stop valve and the 5th cut-off
Valve is connected with Colophonium prilling granulator.
Asphalt delivery system as above, these, it is preferred to, also include: the second stop valve
With the 6th stop valve, described second stop valve is connected with described first holding vessel, is used for controlling described
The connection of the first holding vessel and air and cut-off, described 6th stop valve and described second holding vessel phase
Even, for controlling connection and the cut-off of described second holding vessel and air.
Asphalt delivery system as above, these, it is preferred to, also include: first flow control
Valve processed and second flow control valve, described first flow control valve be arranged on described first holding vessel and
Between second holding vessel and tar oil treatment device, described second flow control valve is arranged on described first
Between holding vessel and the second holding vessel and Colophonium prilling granulator.
Asphalt delivery system as above, these, it is preferred to, also include: nitrogen power source,
Described nitrogen power source is connected with described first holding vessel by the 7th stop valve, described nitrogen power
Source is connected with described second holding vessel by the 8th stop valve.
Asphalt delivery system as above, these, it is preferred to: described first holding vessel and the
It is provided with liquidometer on two holding vessels.
Asphalt delivery system as above, these, it is preferred to: the nitrogen of described nitrogen power source
Atmospheric pressure is 0.7MPa.
Asphalt delivery system as above, these, it is preferred to: described first holding vessel and the
The material of two holding vessels is all 15CrMo.
Asphalt delivery system as above, these, it is preferred to: described first holding vessel and the
It is provided with heat-insulation layer in two holding vessels.
The asphalt delivery method of present invention offer and induction system are by arranging the first holding vessel and second
Holding vessel and multiple stop valve, make two holding vessels alternately store Colophonium and alternately to Colophonium pelletize
Device conveying Colophonium, eliminates centrifugal pump of the prior art or screw pump, it is to avoid mechanical breakdown,
Ensure that the seriality of production.
Accompanying drawing explanation
The asphalt delivery method flow diagram that Fig. 1 provides for the embodiment of the present invention；
The asphalt delivery system structural representation that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
The asphalt delivery method flow diagram that Fig. 1 provides for the embodiment of the present invention, the embodiment of the present invention carries
Having supplied a kind of asphalt delivery method, the asphalt delivery system provided by the embodiment of the present invention is realized,
The asphalt delivery system structural representation that Fig. 2 provides for the embodiment of the present invention.Refer to Fig. 1 and Fig. 2,
Embodiments providing a kind of asphalt delivery method, the method comprises the following steps:
Step a, tar oil treatment device carry Colophonium in the first holding vessel.
In the present embodiment, Colophonium conveying rely on be nitrogen as power, at the first holding vessel 1
Before coming into operation with the second holding vessel 2, first two holding vessels are carried out nitrogen displacement, and make two
It is in atmospheric pressure state inside individual holding vessel normally producing.
Wherein, step a specifically includes:
Step a1, open the first stop valve 3, make tar oil treatment device 4 in the first holding vessel 1
Conveying Colophonium；
If the air pressure in step a2 the first holding vessel 1 is more than setting value, then open the second stop valve
5, make the first holding vessel 1 communicate with air.
Step b, when the bitumen level in described first holding vessel reaches the first setting value, at tar
Reason device stops to the first holding vessel conveying Colophonium, and now tar oil treatment device is in the second holding vessel
Conveying Colophonium, and make described first holding vessel carry Colophonium to Colophonium prilling granulator.
Wherein, above-mentioned first setting value can be the 50% of the first holding vessel 1 volume, art technology
Personnel can also according to the production capacity of the flow velocity of Colophonium and Colophonium prilling granulator 6 adjust this
One setting value.
Step b specifically includes:
Step b1, when the bitumen level in described first holding vessel 1 reaches the first setting value, close
Close the first stop valve 3, make tar oil treatment device 4 stop to the first holding vessel 1 and carry Colophonium, now
Opening the 3rd stop valve 7, tar oil treatment device 4 carries Colophonium in the second holding vessel 2, and opens
4th stop valve 8, makes the first holding vessel 1 carry Colophonium to Colophonium prilling granulator 6；
Step b2, when the first holding vessel 1 is after Colophonium prilling granulator 6 carries Colophonium, open
Second stop valve 5, makes the first holding vessel 1 communicate with air, thus is in normal pressure；
Step b3, close the second stop valve 5, make the first holding vessel 1 stand by.
Step c, when the bitumen level in described second holding vessel 2 reaches the second setting value, tar
Processing means 4 stops carrying Colophonium to the second holding vessel 2, and now tar oil treatment device 4 stores to first
Tank 1 carries Colophonium, and makes described second holding vessel 2 carry Colophonium to Colophonium prilling granulator 6.
Selecting of second setting value is identical with the system of selection of the first setting value, can be according to Colophonium
The production capacity of flow velocity and Colophonium prilling granulator 6 adjusts.In the present embodiment, the second setting value is
The 50% of second holding vessel 2 volume.
Step c specifically includes:
Step c1, when the bitumen level in described second holding vessel 2 reaches the second setting value, close
Close the 3rd stop valve 7, make tar oil treatment device 4 stop to the second holding vessel 2 and carry Colophonium, now
Opening the first stop valve 3, tar oil treatment device 4 carries Colophonium in the first holding vessel 1, and opens
5th stop valve 9, makes described second holding vessel 2 carry Colophonium to Colophonium prilling granulator 6；
Step c2, when the second holding vessel 2 is after Colophonium prilling granulator 6 carries Colophonium, open
6th stop valve 10, makes the second holding vessel 2 communicate with air, thus is in normal pressure；
Step c3, closedown the 6th stop valve 10, make the second holding vessel 2 stand by.
Preferably, the method also includes adjusting first flow control valve 11, to control tar processing
Device 4 carries the step of the flow velocity of Colophonium to the first holding vessel 1 or the second holding vessel 2, and adjusts the
Two flow control valves 12, defeated to Colophonium prilling granulator 6 to control the first holding vessel 1 or the second holding vessel 2
Send the step of the flow velocity of Colophonium.
The embodiment of the present invention additionally provides a kind of asphalt delivery system, for from tar oil treatment device 4 to
Colophonium prilling granulator 6 carries Colophonium, including tar oil treatment device 4 and Colophonium prilling granulator 6, wherein,
Described induction system includes: the first holding vessel 1 and the second holding vessel 2, described first holding vessel 1 and
Two holding vessels 2 are connected with tar oil treatment device 4 with the 3rd stop valve 7 by the first stop valve 3 respectively,
And described first holding vessel 1 and the second holding vessel 2 are respectively by the 4th stop valve 8 and the 5th stop valve 9
It is connected with Colophonium prilling granulator.
Preferably, this induction system also includes the second stop valve 5 and the 6th stop valve 10, described
Two stop valves 5 for controlling connection and the cut-off of described first holding vessel 1 and air, described 6th section
Only valve 10 is for controlling described second holding vessel 2 and the connection of air and cut-off.
Further, this induction system also includes: first flow control valve 11 and second flow control
Valve 12, described first flow control valve 11 be arranged on described first holding vessel 1 and the second holding vessel 2 with
Between tar oil treatment device 4, described second flow control valve 12 is arranged on described first holding vessel 1 He
Between second holding vessel 2 and Colophonium prilling granulator 6.
The most just it is discussed in detail and applies this asphalt delivery system to carry out the work process of asphalt delivery:
First stop valve the 3, second stop valve the 5, the 3rd cut-off was closed before the bituminous pitch storing tank that comes into operation
Valve the 7, the 6th stop valve 10, first flow control valve 11, open the 7th stop valve the 13, the 4th cut-off
Bituminous pitch storing tank is entered by valve the 8, the 8th stop valve the 14, the 5th stop valve 9, second flow control valve 12
Row nitrogen replace, to be replaced qualified after close nitrogen gas control valve, the i.e. the 7th stop valve 13 and the 8th section
Only valve 14, opens the second stop valve 5 and the 6th stop valve 10, makes two holding vessels be in atmospheric pressure state
After.When device normally produces, the jacket hot tracing of each Colophonium pipeline that first comes into operation, the first holding vessel 1 He
It is provided with heat-insulation layer in second holding vessel 2, internal Colophonium to be played the effect of insulation, prevents
Colophonium cooling is too fast.
If first selecting the first holding vessel 1 to run, Colophonium is first-class from flowing to from tar oil treatment device 4
Before control valve 11, close the 7th stop valve the 13, the 4th stop valve the 8, second stop valve the 5, the 3rd
Stop valve the 7, the 8th stop valve the 14, the 5th stop valve the 9, the 6th stop valve 10 and second flow control
Valve 12, opens the first stop valve 3, slightly opens first flow control valve, it is ensured that device is properly functioning.Phase
Between, if there is the air pressure in the first holding vessel more than certain setting value, say, that if first
Holding vessel builds the pressure phenomenon, can slightly open the second stop valve 5, be passed through a small amount of air.
When the liquid level of the first holding vessel reaches 50%, close the first stop valve 3, open the 3rd cut-off
Valve 7, Colophonium suspends and feeds to the first holding vessel 1, changes into feeding to the second holding vessel 2, now except the
Flow control valve 11 is slightly opened, outside the 3rd stop valve 7 standard-sized sheet, other valves are in closed mode.
Now can carry Colophonium to Colophonium prilling granulator 6, standard-sized sheet the 7th stop valve 13 and the 4th stop valve 8,
Slightly open second flow control valve 12, be used for controlling Colophonium flow velocity, it is ensured that Colophonium granulation outcome.
After treating the asphalt delivery of the first holding vessel 1, close the 7th stop valve 13 and the 4th stop valve
8, open the second stop valve 5, when making the first holding vessel 1 be in atmospheric pressure state, close the second stop valve
5, the first holding vessel 1 stands by.
When the liquid level of the second holding vessel 2 reaches 50%, close the 3rd stop valve 7, open the first cut-off
Valve 3, Colophonium changes into feeding to the first holding vessel 1 to the second holding vessel 2.Period, if there is second
The phenomenon that builds the pressure of holding vessel 2, can slightly open the 6th stop valve 10.The Colophonium of the second holding vessel 2 can be to
It is delivered to outward Colophonium prilling granulator 6, now valve first flow control valve 11 and second flow control valve 12
Slightly opening, the first stop valve 3 standard-sized sheet, other valves are in closed mode, standard-sized sheet the 8th stop valve 14
With the 5th stop valve 9, control Colophonium flow velocity by second flow control valve 12, it is ensured that pelletize is normal.
The 8th stop valve 14 and the 5th stop valve is closed after treating the asphalt delivery of the second holding vessel 2
9, open the 6th stop valve 10, when the second holding vessel 2 is in atmospheric pressure state, close the 6th stop valve
10, the second holding vessel 2 stands by.By that analogy, two holding vessel alternations are made.This
Skilled person is it is understood that the quantity of holding vessel can also arrange multiple, and it replaces work
The principle made is identical with the alternation principle of two holding vessels.
In the above-described embodiments, nitrogen power source is by the 7th stop valve 13 and described first holding vessel 1
Being connected, described nitrogen power source is connected with described second holding vessel 2 by the 8th stop valve 14.Preferably
, the nitrogen pressure of nitrogen power source is 0.7MPa, and this force value can make Colophonium make to Colophonium
The speed of grain device flowing is the most reasonable.
Further, the material of the first holding vessel 1 and the second holding vessel 2 is all 15CrMo, its corrosion resistant
Erosion, the life-span is long.
Last it is noted that above example is only in order to illustrate technical scheme, rather than
It is limited；Although the present invention being described in detail with reference to previous embodiment, this area
Those of ordinary skill is it is understood that it still can be to the technical scheme described in foregoing embodiments
Modify, or wherein portion of techniques feature is carried out equivalent；And these are revised or replace
Change, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (14)
1. an asphalt delivery method, it is characterised in that comprise the steps:
Step a, tar oil treatment device carry Colophonium in the first holding vessel；
Step b, when the bitumen level in described first holding vessel reaches the first setting value, at tar
Reason device stops to the first holding vessel conveying Colophonium, and now tar oil treatment device is in the second holding vessel
Conveying Colophonium, and make described first holding vessel carry Colophonium to Colophonium prilling granulator；
Step c, when the bitumen level in described second holding vessel reaches the second setting value, at tar
Reason device stops to the second holding vessel conveying Colophonium, and now tar oil treatment device is in the first holding vessel
Conveying Colophonium, and make described second holding vessel carry Colophonium to Colophonium prilling granulator.
Asphalt delivery method the most according to claim 1, it is characterised in that described step a
Specifically include:
Step a1, open the first stop valve, make tar oil treatment device carry drip in the first holding vessel
Blue or green；
If the air pressure in step a2 the first holding vessel is more than setting value, then open the second stop valve,
The first holding vessel is made to communicate with air.
Asphalt delivery method the most according to claim 2, it is characterised in that described step b
Specifically include:
Step b1, when the bitumen level in described first holding vessel reaches the first setting value, close
First stop valve, makes tar oil treatment device stop, to the first holding vessel conveying Colophonium, now opening the
Three stop valves, tar oil treatment device carries Colophonium in the second holding vessel, and opens the 4th stop valve,
The first holding vessel is made to carry Colophonium to Colophonium prilling granulator；
Step b2, when the first holding vessel to Colophonium prilling granulator conveying Colophonium after, open second
Stop valve, is in normal pressure in making the first holding vessel；
Step b3, close the second stop valve, make the first holding vessel stand by.
Asphalt delivery method the most according to claim 3, it is characterised in that described step c
Specifically include:
Step c1, when the bitumen level in described second holding vessel reaches the second setting value, close
3rd stop valve, makes tar oil treatment device stop, to the second holding vessel conveying Colophonium, now opening the
One stop valve, tar oil treatment device carries Colophonium in the first holding vessel, and opens the 5th stop valve,
Described second holding vessel is made to carry Colophonium to Colophonium prilling granulator；
Step c2, when the second holding vessel to Colophonium prilling granulator conveying Colophonium after, open the 6th
Stop valve, is in normal pressure in making the second holding vessel；
Step c3, closedown the 6th stop valve, make the second holding vessel stand by.
5. according to the arbitrary described asphalt delivery method of claim 1-4, it is characterised in that also wrap
Include: adjust first flow control valve, to control tar oil treatment device to the first holding vessel or the second storage
Deposit the flow velocity of tank conveying Colophonium.
6. according to the arbitrary described asphalt delivery method of claim 1-4, it is characterised in that also wrap
Include: adjust second flow control valve, to control the first holding vessel or the second holding vessel to Colophonium pelletize
The flow velocity of device conveying Colophonium.
7. an asphalt delivery system, including tar oil treatment device and Colophonium prilling granulator, its feature
Being, described asphalt delivery system is for realizing the asphalt delivery method described in claim 1, institute
State induction system to include: the first holding vessel and the second holding vessel, described first holding vessel and the second storage
Deposit tank to be connected with tar oil treatment device by the first stop valve and the 3rd stop valve respectively, and described the
One holding vessel and the second holding vessel are filled with Colophonium pelletize by the 4th stop valve and the 5th stop valve respectively
Put connected.
Asphalt delivery system the most according to claim 7, it is characterised in that also include: the
Two stop valves and the 6th stop valve, described second stop valve is connected with described first holding vessel, is used for
Control described first holding vessel and the connection of air and cut-off, described 6th stop valve and described second
Holding vessel is connected, for controlling connection and the cut-off of described second holding vessel and air.
9. according to the asphalt delivery system described in claim 7 or 8, it is characterised in that also include:
First flow control valve and second flow control valve, described first flow control valve is arranged on described
Between one holding vessel and the second holding vessel and tar oil treatment device, described second flow control valve is arranged
Between described first holding vessel and the second holding vessel and Colophonium prilling granulator.
Asphalt delivery system the most according to claim 9, it is characterised in that also include:
Nitrogen power source, described nitrogen power source is connected with described first holding vessel by the 7th stop valve,
Described nitrogen power source is connected with described second holding vessel by the 8th stop valve.
11. asphalt delivery system according to claim 9, it is characterised in that: described first
It is provided with liquidometer on holding vessel and the second holding vessel.
12. asphalt delivery system according to claim 10, it is characterised in that: described nitrogen
The nitrogen pressure of power source is 0.7MPa.
13. asphalt delivery system according to claim 9, it is characterised in that: described first
The material of holding vessel and the second holding vessel is all 15CrMo.
14. asphalt delivery system according to claim 13, it is characterised in that: described first
It is provided with heat-insulation layer in holding vessel and the second holding vessel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256258.8A CN104019362B (en) | 2014-06-10 | 2014-06-10 | Asphalt delivery method and induction system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256258.8A CN104019362B (en) | 2014-06-10 | 2014-06-10 | Asphalt delivery method and induction system |
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| CN104019362A CN104019362A (en) | 2014-09-03 |
| CN104019362B true CN104019362B (en) | 2016-11-23 |
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| CN201410256258.8A Active CN104019362B (en) | 2014-06-10 | 2014-06-10 | Asphalt delivery method and induction system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108268061A (en) * | 2017-12-29 | 2018-07-10 | 三汽车制造有限公司 | Control method, system and the bituminous mixing plant of pitch injection holding vessel |
| CN108755344B (en) * | 2018-06-05 | 2020-09-11 | 上海公路桥梁（集团）有限公司 | Intelligent asphalt road construction system |
| CN108762216A (en) * | 2018-06-05 | 2018-11-06 | 上海公路桥梁（集团）有限公司 | Intelligence drips road managing and control system |
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| CN2623690Y (en) * | 2003-06-01 | 2004-07-07 | 杨周洪 | Apparatus for producing hybrid modified asphalt |
| JP2004225251A (en) * | 2003-01-20 | 2004-08-12 | Nikko Co Ltd | Asphalt equipment for asphalt plant |
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| CN203907226U (en) * | 2014-06-10 | 2014-10-29 | 中国庆华能源集团有限公司 | Asphalt conveying system |
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|---|---|---|---|---|
| JP2004225251A (en) * | 2003-01-20 | 2004-08-12 | Nikko Co Ltd | Asphalt equipment for asphalt plant |
| CN2623690Y (en) * | 2003-06-01 | 2004-07-07 | 杨周洪 | Apparatus for producing hybrid modified asphalt |
| CN202598131U (en) * | 2012-04-13 | 2012-12-12 | 中国石油天然气股份有限公司 | Oil-gas mixing transportation device of crude oil and oil field gas in oil field |
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Inventor after: Zhou Xiushan Inventor after: Chen Xuewei Inventor after: Hu Fengshan Inventor after: Zhang Zhenbing Inventor after: Jin Xiaoyu Inventor after: Gao Shou Inventor after: Liu Xingzheng Inventor before: Hu Fengshan Inventor before: Zhang Zhenbing Inventor before: Jin Xiaoyu Inventor before: Gao Shou Inventor before: Liu Xingzheng |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HU FENGSHAN ZHANG ZHENBING JIN XIAOYU GAO SHOU LIU XINGZHENG TO: ZHOU XIUSHAN CHEN XUEWEI HU FENGSHAN ZHANG ZHENBING JIN XIAOYU GAO SHOU LIU XINGZHENG |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |