CN204328984U - The hybrid radiant boiler of a kind of revolution shape - Google Patents
The hybrid radiant boiler of a kind of revolution shape Download PDFInfo
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- CN204328984U CN204328984U CN201420711805.2U CN201420711805U CN204328984U CN 204328984 U CN204328984 U CN 204328984U CN 201420711805 U CN201420711805 U CN 201420711805U CN 204328984 U CN204328984 U CN 204328984U
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- coal
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- 230000005855 radiation Effects 0.000 claims abstract description 91
- 238000012546 transfer Methods 0.000 claims abstract description 40
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 17
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims description 6
- 239000003245 coal Substances 0.000 abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 24
- 239000003546 flue gas Substances 0.000 abstract description 24
- 238000010438 heat treatment Methods 0.000 abstract description 23
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 abstract description 3
- 235000019504 cigarettes Nutrition 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 description 9
- 229910052783 alkali metal Inorganic materials 0.000 description 6
- 150000001340 alkali metals Chemical class 0.000 description 6
- 238000007664 blowing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Air Supply (AREA)
Abstract
The utility model discloses the hybrid radiant boiler of a kind of revolution shape, comprise coal-powder boiler and heat reclamation device, wherein heat reclamation device comprises smoke inlet, radiation heat transfer assembly, heat convection assembly, the air inlet side of smoke inlet is connected with the outlet of coal-powder boiler, the side of giving vent to anger of smoke inlet is connected with radiation heat transfer assembly, and radiation heat transfer assembly is in the upper end of heat convection assembly; Radiation heat transfer assembly comprises radiation water-cooling wall and radiation shield, and radiation water-cooling wall is the cylindrical-shaped structure be spliced into by multiple vertical elongated tubular; Radiation shield is positioned at the cylindrical-shaped structure of radiation water-cooling wall, and radiation shield comprises multiple radiator screen, and radiator shields with the central axis of radiation water-cooling wall vertical direction for dispersing layout in the center of circle; The utility model by radiation water-cooling wall and radiation shield to the radiation heat transfer of high-temperature flue gas, radiation heat transfer section can be made to stride across and easily to stain cigarette warm area, and can not condensation stick on convection heating surface, fundamentally solve the problem such as slagging and heating surface that high alkalinity coal power generation base group faces.
Description
Technical field
The utility model relates to the soil resistant technical field of high alkalinity coal, particularly the hybrid radiant boiler of a kind of revolution shape.
Background technology
China's power industry is based on thermal power generation, and thermoelectricity installed capacity is more than more than 70%.The many employings of thermoelectricity steam coal low grade coal inferior, the slagging scorification of boiler furnace water-cooling wall, convection heating surface contamination problems affect one of major issue that station boiler normally runs for a long time.Slagging scorification and contamination can reduce the heat transfer efficiency of boiler, affect boiler output, and the safety in operation of equipment is seriously reduced, and may cause the major accident such as boiler flameout, booster, unplanned blowing out when slagging scorification is serious.
Utilize coal combustion, the alkali metal in coal is harmful components, and it is relevant with the slagging scorification dust stratification of boiler high temperature heating surface usually, and high alkalinity coal, in combustion due to the volatilization of alkali metal, easily forms one deck bottoming attachment in heating surface condensation.Along with attachment is to the suction-operated of flying dust, heating surface can be made to occur contamination phenomenon in various degree, and acomia use soot blower is removed, thus increase heat exchange thermal resistance, reduce the heat exchange efficiency of heat-transfer surface, finally make burner hearth exert oneself greatly to reduce and cause blowing out.Dust stratification have impact on the appropriate design layout of heating surface simultaneously, causes exhaust gas temperature to raise.In addition on the one hand, alkali metal can form complex compound with iron phase element, is formed and gnaws the effect of biting, the compressive resistance of metal heated is reduced to metal pipe-wall, causes heat-transfer surface to restrain and booster occurs, the stability that the equipment that has a strong impact on runs and reliability.Heating surface stains the safe and economical operation that drastically influence boiler in a word.
Accurate eastern regional rich coal resources, coalfield resources reserves reach 3,900 hundred million tons, account for 20% of coal resources in China recoverable amount.But accurate eastern ature of coal high-moisture and serious clinkering property, contamination significantly limit a large amount of uses of this coal in power plant, cause accurate eastern coal resource and well can not be applied in coal electricity industry, significantly limit the development of coal electricity industry, a large amount of coal resources are caused effectively not utilize very well, cause the waste of resource, the development of the Economy in Xinjiang also limited.
The eastern coal of current standard also unrealized independent utility, can only be utilized by the mode section mixing burning.Xinjiang power plant mixes and burns accurate eastern coal, and mixed-fuel burning proportion is 25%, and find after boiler fortune first quarter moon, overall boiler is all blocked by cinder.From burner hearth to horizontal flue superheater reheater, then to back-end surfaces low-temperature reheater, low temperature superheater, economizer, there is large-area coking, ash erosion " bridging " phenomenon is serious, booster phenomenon takes place frequently, and carry out cleaning after blowing out and find, coking is very hard.Water-cooling wall slagging scorification is serious, soot blower blows grey frequency in stove increases, and causes the thinning booster of water-cooling wall.In addition, a large amount of larger-size clinker comes off instantaneously, calls in furnace bottom water seal arrangement, cause water in water seal arrangement to be impacted by red-hot cinder, vaporize, a large amount of steam cause hearth combustion fluctuation and fire extinguishing.
By finding the pilot scale boiler combustion test of typical high alkalinity coal, use the boiler of high alkalinity coal, when flue-gas temperature is between 700 DEG C-1100 DEG C, Boiler Convection Heating Surface stains the most serious, due to the volatilization of alkali metal, easily form one deck bottoming attachment in convection heating surface condensation, be bonded on heating surface and form slagging scorification, accumulate this layer thickness in time sharply to increase, be difficult to directly remove.When temperature be reduced to less than 700 DEG C or higher than 1100 DEG C time, the contamination of boiler heating surface can adopt conventional vapor blowing method or other existing methods to be resolved, and can not affect safe operation of the boiler.Between interval 700 DEG C-1100 DEG C of flue-gas temperature, adopt steam blowing or other soot-blowing modes all can not solve, stain and be extremely difficult to remove.
Due to the inherent characteristic containing high alkalinity element (being mainly sodium element) in coal, cause combustion apparatus Boiler Heating Surfaces and stain serious, the pure burning that can not realize accurate eastern coal utilizes and plays the advantages such as accurate eastern coal reserves reaches, price is low, cause the extensive utilization for China's a large amount of high basic metal content coal to be restricted, thus constrain the efficiency of coal resources in China utilization.
Utility model content
The utility model is mainly for the defect and the deficiency that use high alkalinity coal burning boiler system in prior art, provide the hybrid radiant boiler of a kind of revolution shape, coal-powder boiler, radiant boiler are combined as a whole, solve existing station boiler convection heating surface contamination problems, ensure the abundant heat exchange of boiler heating surface, stablize boiler output, avoid, owing to staiing the convection heating surface overheating problem caused, greatly reducing the generation of pipe explosion accident.
In order to overcome defect and the deficiency of conventional boiler, the technical solution of the utility model is:
The hybrid radiant boiler of a kind of revolution shape, comprise coal-powder boiler and heat reclamation device, coal-powder boiler is positioned on the left of heat reclamation device, it is characterized in that: described heat reclamation device is hybrid revolution shape, comprise smoke inlet, radiation heat transfer assembly, heat convection assembly, the air inlet side of smoke inlet is connected with the outlet of coal-powder boiler, and the side of giving vent to anger of smoke inlet is connected with radiation heat transfer assembly, and radiation heat transfer assembly is in the upper end of heat convection assembly; Described radiation heat transfer assembly comprises radiation water-cooling wall and radiation shield; Described radiation water-cooling wall is the cylindrical-shaped structure be spliced to form by multiple vertical elongated tubular, is cavity structure in cylindric; Described radiation shield is positioned at the cavity structure of radiation water-cooling wall, radiation shield comprises multiple perpendicular radiator screen, each radiator screen is all be spliced to form by multiple vertical elongated tubular, and radiator shields with the central axis of radiation water-cooling wall vertical direction for dispersing layout in the center of circle.
Described heat convection assembly comprises secondary economizer, one-level economizer and air preheater; Described secondary economizer, one-level economizer and air preheater are made up of three groups of spiral coils respectively, often organize spiral coil by four layers closely around spiral endless tube form, often organize between spiral coil and be staggered in arrangement.Described secondary economizer, one-level economizer and air preheater are arranged in radiation heat transfer assembly bottom successively.
Two adjacent elongated tubulars of described radiation water-cooling wall are connected by welding manner.
Two adjacent elongated tubulars of described radiation shield are also connected by welding manner.
Described coal-powder boiler shields before comprising burner, burner hearth, radiation, ash bucket.
Specific works process of the present utility model is as follows:
In the burner hearth of coal-powder boiler, high-temperature flue gas shields heat exchange before radiation, the temperature of high-temperature flue gas reduces to about 1100 DEG C, then high-temperature flue gas enters into the cavity structure of radiation water-cooling wall from smoke inlet, in the mode of radiant heat transfer, heat is passed to the radiation water-cooling wall of surrounding by radiation shield;
Because circulation area expands, flue gas flow rate is lower, and in high-temperature flue gas, active alkali metal is from leaving smoke inlet to the process arriving radiation water-cooling wall, sufficiently cooled, solidification loses cohesiveness and forms lime-ash, and lime-ash falls under gravity into radiation heat transfer assembly bottom; Radiation shield, in the cavity structure of radiation water-cooling wall, increases radiation heat transfer area, decreases the volume of radiation heat transfer part, makes heat transfer effect better;
Lime-ash falls through radiation heat transfer assembly, and high-temperature flue gas enters the heat convection assembly of bottom after the abundant heat exchange of radiation heat transfer assembly, carry out heat exchange cooling by secondary economizer, an economizer and air preheater successively, last flue gas is discharged by the outlet bottom heat reclamation device; Now, it is common fouling phenomenon that the lime-ash solidification in flue gas loses caking property, can arrange blow device near heat convection assembly, carries out the disturbance of accumulatingdust precipitation, ensures the reliable and stable operation of heat convection assembly.
The beneficial effects of the utility model are as follows:
(1) the utility model can be striden across by radiation heat transfer section and easily stain cigarette warm area, and can not condensation stick on convection heating surface, fundamentally solves the problems such as slagging that high alkalinity coal power generation base group faces and heating surface.
(2) the utility model avoids owing to staiing the convection heating surface overtemperature tube burst or clogging phenomenon that cause, ensure that continuous production runs.
(3) the utility model can realize the pure burning utilization of high sodium coal.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of radiation shield of the present utility model.
Wherein, Reference numeral is: 1 burner, 2 burner hearths, screen before 3 radiation, 4 ash buckets, 5 smoke inlets, 6 radiation heat transfer assemblies, 6-1 radiation water-cooling wall, 6-2 radiation shield, 7 heat convection assemblies, 7-1 secondary economizer, 7-2 one-level economizer, 7-3 air preheater.
Detailed description of the invention
As shown in Figure 1-2, the hybrid radiant boiler of a kind of revolution shape, comprise coal-powder boiler and heat reclamation device, coal-powder boiler is positioned on the left of heat reclamation device, described heat reclamation device is hybrid revolution shape, and comprise smoke inlet 5, radiation heat transfer assembly 6, heat convection assembly 7, the air inlet side of smoke inlet 5 is connected with the outlet of coal-powder boiler, the side of giving vent to anger of smoke inlet 5 is connected with radiation heat transfer assembly 6, and radiation heat transfer assembly 6 is in the upper end of heat convection assembly 7; Described radiation heat transfer assembly 6 comprises radiation water-cooling wall 6-1 and radiation shield 6-2; Described radiation water-cooling wall 6-1 is the cylindrical-shaped structure be spliced to form by multiple vertical elongated tubular, is cavity structure in cylindric; Described radiation shield 6-2 is positioned at the cavity structure of radiation water-cooling wall 6-1, radiation shield 6-2 comprises multiple perpendicular radiator screen, each radiator screen is all be spliced to form by multiple vertical elongated tubular, and radiator shields with the central axis of radiation water-cooling wall 6-1 vertical direction for dispersing layout in the center of circle.
Described heat convection assembly 7 comprises secondary economizer 7-1, one-level economizer 7-2 and air preheater 7-3; Described secondary economizer 7-1, one-level economizer 7-2 and air preheater 7-3 are made up of three groups of spiral coils respectively, often organize spiral coil by four layers closely around spiral endless tube form, often organize between spiral coil and be staggered in arrangement.Described secondary economizer 7-1, one-level economizer 7-2 and air preheater 7-3 are arranged in radiation heat transfer assembly bottom successively.
Two adjacent elongated tubulars of described radiation water-cooling wall 6-1 are connected by welding manner.
Two adjacent elongated tubulars of described radiation shield 6-2 are also connected by welding manner.
Described coal-powder boiler comprises burner 1, burner hearth 2, the front screen 3 of radiation, ash bucket 4.
By adopting, revolution shape radiant boiler device is set at boiler tail, its entrance flue gas temperature is greater than 1100 DEG C, utilize radiant boiler heating surface layout feature, avoid the contamination of radiation heating-surface, behind radiation heat transfer face, flue-gas temperature controls below 700 DEG C, then the flue gas of lower temperature is introduced rear portion convection heating surface.After flue-gas temperature reduces, the sintering rate of flying dust and sintering strength all can reduce, then coordinate the floating ash that can easily to remove with conventional sootblower on heating surface.Boiler Convection Heating Surface can be made directly to stride across the temperature range 700 DEG C-1100 DEG C that contamination easily occurs, avoid high temperature superheater and serious contamination occurs.
Specific works process of the present utility model is as follows:
In the burner hearth 2 of coal-powder boiler, high-temperature flue gas shields 3 heat exchange before radiation, the temperature of high-temperature flue gas reduces to about 1100 DEG C, then high-temperature flue gas enters into the cavity structure of radiation water-cooling wall 6-1 from smoke inlet 5, in the mode of radiant heat transfer, heat is passed to the radiation water-cooling wall 6-1 of surrounding by radiation shield 6-2;
Because circulation area expands, flue gas flow rate is lower, and in high-temperature flue gas, active alkali metal is from leaving smoke inlet 5 to the process arriving radiation water-cooling wall 6-1, sufficiently cooled, solidification loses cohesiveness and forms lime-ash, and lime-ash falls under gravity into radiation heat transfer assembly 6 bottom; Radiation shield 6-2, in the cavity structure of radiation water-cooling wall 6-1, increases radiation heat transfer area, decreases the volume of radiation heat transfer part, makes heat transfer effect better;
Lime-ash falls through radiation heat transfer assembly 6, and high-temperature flue gas enters the heat convection assembly 7 of bottom after radiation heat transfer assembly 6 fully heat exchange, pass through secondary economizer 7-1, an economizer 7-2 and air preheater 7-3 successively with the heat in recovered flue gas, and continue to reduce exhaust gas temperature;
Last flue gas is discharged by the outlet bottom heat reclamation device; Now, it is common fouling phenomenon that the lime-ash solidification in flue gas loses caking property, can arrange blow device near heat convection assembly 7, carries out the disturbance of accumulatingdust precipitation, ensures the reliable and stable operation of heat convection assembly 7.
Claims (5)
1. the hybrid radiant boiler of revolution shape, comprise coal-powder boiler and heat reclamation device, coal-powder boiler is positioned on the left of heat reclamation device, it is characterized in that: described heat reclamation device is hybrid revolution shape, comprise smoke inlet (5), radiation heat transfer assembly (6), heat convection assembly (7), the air inlet side of smoke inlet (5) is connected with the outlet of coal-powder boiler, the side of giving vent to anger of smoke inlet (5) is connected with radiation heat transfer assembly (6), and radiation heat transfer assembly (6) is in the upper end of heat convection assembly (7); Described radiation heat transfer assembly (6) comprises radiation water-cooling wall (6-1) and radiation shield (6-2); Described radiation water-cooling wall (6-1) is the cylindrical-shaped structure be spliced to form by multiple vertical elongated tubular, is cavity structure in cylindric; Described radiation shield (6-2) is positioned at the cavity structure of radiation water-cooling wall (6-1), radiation shield (6-2) comprises multiple perpendicular radiator screen, each radiator screen is all be spliced to form by multiple vertical elongated tubular, and radiator screen is that layout is dispersed in the center of circle with the central axis of radiation water-cooling wall (6-1) vertical direction.
2. the hybrid radiant boiler of one revolution shape according to claim 1, is characterized in that: described heat convection assembly (7) comprises secondary economizer (7-1), one-level economizer (7-2) and air preheater (7-3); Described secondary economizer (7-1), one-level economizer (7-2) and air preheater (7-3) are made up of three groups of spiral coils respectively, often organize spiral coil by four layers closely around spiral endless tube form, often organize between spiral coil and be staggered in arrangement.
3. the hybrid radiant boiler of one revolution shape according to claim 1, is characterized in that: two adjacent elongated tubulars of described radiation water-cooling wall (6-1) are connected by welding manner.
4. the hybrid radiant boiler of one revolution shape according to claim 1 or 3, is characterized in that: two adjacent elongated tubulars of described radiation shield (6-2) are connected by welding manner.
5. the hybrid radiant boiler of one revolution shape according to claim 2, is characterized in that: described coal-powder boiler shields (3), ash bucket (4) before comprising burner (1), burner hearth (2), radiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420711805.2U CN204328984U (en) | 2014-11-25 | 2014-11-25 | The hybrid radiant boiler of a kind of revolution shape |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420711805.2U CN204328984U (en) | 2014-11-25 | 2014-11-25 | The hybrid radiant boiler of a kind of revolution shape |
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| CN204328984U true CN204328984U (en) | 2015-05-13 |
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| CN201420711805.2U Active CN204328984U (en) | 2014-11-25 | 2014-11-25 | The hybrid radiant boiler of a kind of revolution shape |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359101A (en) * | 2014-11-25 | 2015-02-18 | 中国东方电气集团有限公司 | Rotary hybrid radiation boiler |
| CN108151046A (en) * | 2017-12-22 | 2018-06-12 | 河南金土商贸有限公司 | A kind of adjustable boiler |
-
2014
- 2014-11-25 CN CN201420711805.2U patent/CN204328984U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359101A (en) * | 2014-11-25 | 2015-02-18 | 中国东方电气集团有限公司 | Rotary hybrid radiation boiler |
| CN108151046A (en) * | 2017-12-22 | 2018-06-12 | 河南金土商贸有限公司 | A kind of adjustable boiler |
| CN108151046B (en) * | 2017-12-22 | 2019-10-22 | 中高(泰州)知识产权管理咨询有限公司 | A kind of adjustable boiler |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180423 Address after: 610000, No. 18, West core road, hi tech West District, Sichuan, Chengdu Patentee after: Dongfang Electric Co., Ltd. Address before: Jinniu District Chengdu City, Sichuan province 610036 Shu Road No. 333 Patentee before: Dongfang Electric Corporation |
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| TR01 | Transfer of patent right |