CN204824761U - Dry pulverized coal pressurization dense phase pipelining system - Google Patents
Dry pulverized coal pressurization dense phase pipelining system Download PDFInfo
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- CN204824761U CN204824761U CN201520467494.4U CN201520467494U CN204824761U CN 204824761 U CN204824761 U CN 204824761U CN 201520467494 U CN201520467494 U CN 201520467494U CN 204824761 U CN204824761 U CN 204824761U
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- lock hopper
- pulverized coal
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- coal
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- 239000003245 coal Substances 0.000 title claims abstract description 101
- 239000000463 material Substances 0.000 claims abstract description 68
- 238000005276 aerator Methods 0.000 claims abstract description 40
- 239000011261 inert gas Substances 0.000 claims abstract description 15
- 239000013589 supplement Substances 0.000 claims description 33
- 239000002817 coal dust Substances 0.000 claims description 28
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 19
- 239000007787 solid Substances 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a dry pulverized coal pressurization dense phase pipelining system, include ordinary pressure buggy warehouse, lock fill, material jar, gas holder, the top access buggy source of ordinary pressure buggy warehouse, ordinary pressure buggy warehouse bottom is connected to the entry that the lock was fought, locks exit linkage to the entry of sending out the material jar of fighting, ordinary pressure buggy warehouse still is equipped with ordinary pressure feed bin exhaust pipe, the lock is fought through voltage -sharing tube coupling to gas holder, still through the end of lock fill pressure release tube coupling to ordinary pressure feed bin exhaust pipe, sending out the material jar and still being connected with gas holder pressure release exhaust pipe, gas holder pressure release exhaust pipe also is connected to ordinary pressure feed bin exhaust pipe's end, sending out the material jar and being connected with additional wind aerator, return ordinary pressure buggy warehouse all the way through supplying the wind aerator, another way is inserted the buggy and is removed the nozzle, the utility model discloses greatly the degree having reduced the consumption to inert gas, having improved the economic nature of system, can realize carrying solid gas when conveying speed's flexibility and accurate regulation, carried stability good, system reliability is high.
Description
Technical field
The utility model relates to the conveying technology of dry pulverized coal, particularly a kind of pressurization of dry pulverized coal dense-phase transporting system.
Background technology
Dry pulverized coal feed stream bed gasification furnace is the Main way of current vapourizing furnace development, and wherein pressurization of dry pulverized coal Dense Phase Pneumatic Conveying technology is one of technology of most critical in dry pulverized coal feed pressurization entrained flow bed gasification technology.The coal-supply system of the dry coal powder pressure gasifying device (Shell and GSP etc.) of current main flow all adopts lock hopper technology; enter into high-pressure chamber by normal pressure powder storehouse through transformation storehouse (lock hopper) through protection of inert gas by coal dust, then adopt inertia delivery of carrier gas by after powder fluidized by Cemented filling to gasifier nozzle.For this system, transfer pressure is higher, and corresponding rare gas element consumption is larger.
Current most of delivery system is monolock bucket system, and after lock hopper release, rare gas element is disposed to air completely, and greatly, system economy is poor in waste; Meanwhile, coal dust transfer line all only arranges supplementary wind before coal valve, and this often seems unable to do what one wishes to the when transfer rate adjustment of conveying solid and gas.
Utility model content
The purpose of this utility model is to provide a kind of pressurization of dry pulverized coal dense-phase transporting system, has that system economy is good, transportation parameters regulates that accurate and flexible, plant area are little, conveying good stability, device reliability high.
The technical solution of the utility model is as follows:
A kind of pressurization of dry pulverized coal dense-phase transporting system, is characterized in that: comprise normal pressure pulverized coal warehouse, lock hopper, issuance of materials tank, gas-holder and corresponding pipeline; The access coal dust source, top of normal pressure pulverized coal warehouse, the outlet bottom normal pressure pulverized coal warehouse is connected to the entrance of lock hopper, and the outlet of lock hopper is connected to the entrance of issuance of materials tank; The top of normal pressure pulverized coal warehouse is also provided with normal pressure feed bin exhaust line; The top of lock hopper is connected to gas-holder by equaler road, is also connected to the end of normal pressure feed bin exhaust line by lock hopper pressure relief pipe; Issuance of materials tank is also connected with gas-holder pressure release exhaust line, and gas-holder pressure release exhaust line is also connected to the end of normal pressure feed bin exhaust line; The bottom of issuance of materials tank is connected with supplementary wind aerator, returns normal pressure pulverized coal warehouse by supplementary wind aerator one tunnel, removes burner by supplementary another road of wind aerator access coal dust.
Described normal pressure pulverized coal warehouse arranges at least two feed openings, and lock hopper is provided with the lock hopper number corresponding with feed opening.Be pressurized to alternately to feed in issuance of materials tank after issuance of materials pressure tank through rare gas element, to keep issuance of materials tank material level in normal range after multiple lock hopper charging.
Described lock hopper is provided with lock hopper discharge filter, connects equaler road by lock hopper discharge filter.
Described issuance of materials tank is provided with issuance of materials tank discharge filter, is connected with issuance of materials tank pressure release exhaust line by issuance of materials tank discharge filter, issuance of materials tank pressure release exhaust line and lock hopper pressure relief pipe are also connected to the end of normal pressure feed bin exhaust line behind road.
The bottom of described issuance of materials tank supplements wind aerator after supplementing wind aerator, coal valve, coal valve before being connected with coal valve, supplement after coal valve wind aerator connect turn back to normal pressure pulverized coal warehouse pipeline direction on be disposed with circulation line and supplement wind aerator, circulation relief pipe.
The pressurising air pipe line that wind aerator is all connected with high-pressure inert gas is supplemented after supplementing wind aerator, coal valve, coal valve before described lock hopper discharge filter, lock hopper, issuance of materials tank discharge filter, issuance of materials tank bottom, coal valve.
Described coal dust supplements wind aerator before going to the front end of burner to be provided with burner, supplements the pressurising air pipe line that wind aerator is also connected with high-pressure inert gas before burner.
Coal dust sets out after batch can and controls flow by coal valve, is provided with supplementary wind before and after coal valve, accurately and reliably regulate conveying solid and gas when transfer rate to meet vapourizing furnace requirement.During driving, coal dust sets out after batch can and first enters normal pressure pulverized coal warehouse through circulation line circulation, to be regulatedly enters burner to switching after requiring transportation parameters again; During parking, first switch to circulation line, in batch can pending, coal dust all delivers into normal pressure pulverized coal warehouse and is purged totally by transport pipe and stops.
working method of the present utility model is:
(1), under normal operation, the coal dust through grinding and be dried to certain particle diameter and water content enters normal pressure pulverized coal warehouse;
(2) suppose that now a certain lock hopper is in high pressure hollow tank state, other lock hoppers are in normal pressure canful state, and a certain lock hopper of Open valve UNICOM and other lock hopper top pipelines, all press all lock hoppers, valve-off after treating all to press;
(3) a certain lock hopper of Open valve UNICOM and gas-holder, all press this lock hopper and gas-holder, valve of all blinding off a line after pressure, and the valve opening pipeline continues exhaust and lets out to atmospheric pressure state by this lock hopper; Meanwhile, to another lock hopper pressurising, after this lock hopper pressure filling to issuance of materials pressure tank, open the equaler road between valve UNICOM lock hopper and issuance of materials tank and coal breakage pipeline, lock hopper B starts to issuance of materials tank coal, valve-off after coal;
(4) open the fuel dropping pipe between a certain lock hopper of valve UNICOM and normal pressure pulverized coal warehouse, make coal dust fill it up with valve-off after this lock hopper;
(5) now other lock hoppers are in high pressure hollow tank state, and described a certain lock hopper is in normal pressure canful state, and all lock hoppers hocket work, continue to issuance of materials tank feed;
(6) issuance of materials tank controlling level remains in normal range, regulates the Mei Fajige road on fluidized wind, pressurising wind and coal dust transfer line to supplement air quantity, under specified transportation parameters, sustainedly and stably to vapourizing furnace feed.
the beneficial effects of the utility model are as follows:
(1) consumption reduced rare gas element of the mutual all introducing high degree of pressure and gas-holder between lock hopper, improves the economy of system;
(2) all introduce before and after coal valve and supplement wind, can realize carrying solid and gas when the regulating flexibly and accurately of transfer rate;
(3) adopt at least two continuous alternatingly feeds of lock hopper, under identical operational throughput, lock hopper and issuance of materials tank volume of equipment need less, and facility investment is little and take up an area little, compact equipment;
(4) lock hopper alternatingly feed, the change of issuance of materials tank controlling level is little, and conveying good stability, meanwhile, if blockage problem appears in a lock hopper, other lock hoppers can bear separately feed task, and system reliability is high.
Accompanying drawing explanation
Fig. 1 is system flowchart of the present utility model.
Wherein: I-normal pressure pulverized coal warehouse, II-lock hopper discharge filter, III-lock hopper, IV-issuance of materials tank, V-issuance of materials tank discharge filter, supplement wind aerator before VI-coal valve, VII-coal valve, after VIII-coal valve, supplement wind aerator, IX-gas-holder, X-circulation relief pipe, XI-circulation line supplements wind aerator, supplements wind aerator before XII-burner;
1-lock hopper pressurising air pipe line, 2,3-lock hopper fluidized wind pipeline, 4-issuance of materials tank pressurising air pipe line, 5-issuance of materials tank fluidized wind pipeline, air pipe line is supplemented before 6-coal valve, 7-coal valve sweeping wind pipe road, supplement air pipe line after 8-coal valve, supplement air pipe line before 9-burner, 10-circulation line supplements air pipe line, 11-issuance of materials tank pressure release exhaust line, 12-lock hopper pressure relief pipe, the equaler road between 13-lock hopper and gas-holder, 14-gas-holder pressure release exhaust line, 15-normal pressure feed bin fluidized wind pipeline, 16-normal pressure feed bin exhaust line.
Embodiment
Embodiment
As shown in Figure 1, a kind of pressurization of dry pulverized coal dense-phase transporting system, comprises normal pressure pulverized coal warehouse I, lock hopper III, issuance of materials tank IV, gas-holder IX and corresponding pipeline; The access coal dust source, top of normal pressure pulverized coal warehouse I, the outlet bottom normal pressure pulverized coal warehouse I is connected to the entrance of lock hopper III, and the outlet of lock hopper III is connected to the entrance of issuance of materials tank IV; The top of normal pressure pulverized coal warehouse I is also provided with normal pressure feed bin exhaust line 16; The top of lock hopper III is connected to gas-holder IX by equaler road 13, is also connected to the end of normal pressure feed bin exhaust line 16 by lock hopper pressure relief pipe 12; Issuance of materials tank IV is also connected with gas-holder pressure release exhaust line 14, and gas-holder pressure release exhaust line 14 is also connected to the end of normal pressure feed bin exhaust line 16; The bottom of issuance of materials tank IV is connected with supplementary wind aerator, returns normal pressure pulverized coal warehouse I by supplementary wind aerator one tunnel, removes burner by supplementary another road of wind aerator access coal dust.
Described normal pressure pulverized coal warehouse I arranges at least two feed openings, and lock hopper III is provided with the lock hopper III number corresponding with feed opening number.Be pressurized to alternately to feed in issuance of materials tank IV after issuance of materials tank IV pressure through rare gas element, to keep the material level of issuance of materials tank IV in normal range after multiple lock hopper III charging.
The feed opening place of described normal pressure pulverized coal warehouse I is connected with normal pressure feed bin fluidized wind pipeline 15, and normal pressure feed bin fluidized wind pipeline 15 is connected to gas-holder IX, is the gas from gas-holder IX inside normal pressure feed bin fluidized wind pipeline 15.
Described lock hopper III is provided with lock hopper discharge filter II, connects equaler road 13 by lock hopper discharge filter II.
Described issuance of materials tank IV is provided with issuance of materials tank discharge filter V, be connected with issuance of materials tank pressure release exhaust line 11 by issuance of materials tank discharge filter V, after issuance of materials tank pressure release exhaust line 11 and lock hopper pressure relief pipe 12 road, be connected to the end of normal pressure feed bin exhaust line 16.
The bottom of described issuance of materials tank IV supplements wind aerator VIII after supplementing wind aerator VI, coal valve VII, coal valve before being connected with coal valve, supplement after coal valve wind aerator VIII connect turn back to normal pressure pulverized coal warehouse I pipeline direction on be disposed with circulation line and supplement wind aerator XI, circulation relief pipe X, circulation line supplements the circulation line that wind aerator XI is connected with high-pressure inert gas and supplements air pipe line 10.
Described lock hopper discharge filter II correspondence is connected with the lock hopper pressurising air pipe line 1 of high-pressure inert gas, lock hopper III correspondence is connected with the lock hopper fluidized wind pipeline 2 of high-pressure inert gas, 3, issuance of materials tank discharge filter V correspondence is connected with the issuance of materials tank pressurising air pipe line 4 of high-pressure inert gas, issuance of materials tank IV bottom correspondence is connected with the issuance of materials tank fluidized wind pipeline 5 of high-pressure inert gas, supplement before coal valve before wind aerator VI correspondence is connected with the coal valve of high-pressure inert gas and supplement air pipe line 6, coal valve VII correspondence is connected with the coal valve sweeping wind pipe road 7 of high-pressure inert gas, supplement after coal valve after wind aerator VIII correspondence is connected with the coal valve of high-pressure inert gas and supplement air pipe line 8.
Described coal dust supplements wind aerator XII before going to the front end of burner to be provided with burner, supplements before wind aerator XII is also connected with the burner of high-pressure inert gas and supplement air pipe line 9 before burner.
Coal dust sets out after batch can IV and controls flow by coal valve VII, is provided with supplementary wind before and after coal valve VII, accurately and reliably regulate conveying solid and gas when transfer rate to meet vapourizing furnace requirement.During driving, coal dust sets out after batch can IV and first enters normal pressure pulverized coal warehouse I through circulation line circulation, to be regulatedly enters burner to switching after requiring transportation parameters again; During parking, first switch to circulation line, in batch can IV pending, coal dust all delivers into normal pressure pulverized coal warehouse I and is purged totally by transport pipe and stops.
working method of the present utility model is:
(1), under normal operation, the coal dust through grinding and be dried to certain particle diameter and water content enters normal pressure pulverized coal warehouse I;
(2) suppose that now a certain lock hopper is in high pressure hollow tank state, other lock hoppers are in normal pressure canful state, and a certain lock hopper of Open valve UNICOM and other lock hopper top pipelines, all press all lock hoppers, valve-off after treating all to press;
(3) a certain lock hopper of Open valve UNICOM and gas-holder IX, all presses this lock hopper and gas-holder IX, valve of all blinding off a line after pressure, and the valve opening pipeline continues exhaust and lets out to atmospheric pressure state by this lock hopper; Meanwhile, to another lock hopper pressurising, after this lock hopper pressure filling to issuance of materials tank IV pressure, open the equaler road between valve UNICOM lock hopper and issuance of materials tank IV and coal breakage pipeline, another lock hopper starts to issuance of materials tank IV coal, valve-off after coal;
(4) open the fuel dropping pipe between a certain lock hopper of valve UNICOM and normal pressure pulverized coal warehouse I, make coal dust fill it up with valve-off after this lock hopper;
(5) now other lock hoppers are in high pressure hollow tank state, and described a certain lock hopper is in normal pressure canful state, and all lock hoppers hocket work, continue to issuance of materials tank IV feed;
(6) issuance of materials tank IV controlling level remains in normal range, regulates the coal FaVIIJi Ge road on fluidized wind, pressurising wind and coal dust transfer line to supplement air quantity, under specified transportation parameters, sustainedly and stably to vapourizing furnace feed.
Principle of work of the present utility model is as follows:
A lock hopper III pressure release exhaust part enters a gas-holder IX part and imports 16 normal pressure pulverized coal warehouse exhaust lines 16, emptying after rear end is filtered.
Coal dust discharge method can enter gasifier nozzle by the top of issuance of materials tank IV, side or bottom through coal dust transfer line.An exhaust part from lock hopper III pressure release enters gas-holder IX, and maintain gas-holder IX pressure and be greater than 0.6MPa, in gas-holder IX, gas is as normal pressure pulverized coal warehouse I fluidized wind source of the gas.Remain lock hopper after gas-holder IX pressure reaches the upper limit to enter exhaust-gas receiver and enter air after device after filtration.
Coal dust sets out after batch can IV and controls flow by coal valve VII, is provided with supplementary wind before and after coal valve VII, accurately and reliably regulate conveying solid and gas when transfer rate to meet vapourizing furnace requirement.During driving, coal dust sets out after batch can IV and first enters normal pressure pulverized coal warehouse I through circulation line circulation, to be regulatedly enters burner to switching after requiring transportation parameters again; During parking, first switch to circulation line, in batch can IV pending, coal dust all delivers into normal pressure pulverized coal warehouse I and is purged totally by transport pipe and stops.
Claims (8)
1. a pressurization of dry pulverized coal dense-phase transporting system, is characterized in that: comprise normal pressure pulverized coal warehouse (I), lock hopper (III), issuance of materials tank (IV), gas-holder (IX) and corresponding pipeline; The access coal dust source, top of normal pressure pulverized coal warehouse (I), the outlet of normal pressure pulverized coal warehouse (I) bottom is connected to the entrance of lock hopper (III), and the outlet of lock hopper (III) is connected to the entrance of issuance of materials tank (IV); The top of normal pressure pulverized coal warehouse (I) is also provided with normal pressure feed bin exhaust line (16); The top of lock hopper (III) is connected to gas-holder (IX) by equaler road (13), is also connected to the end of normal pressure feed bin exhaust line (16) by lock hopper pressure relief pipe (12); Issuance of materials tank (IV) is also connected with gas-holder pressure release exhaust line (14), and gas-holder pressure release exhaust line (14) is also connected to the end of normal pressure feed bin exhaust line (16); The bottom of issuance of materials tank (IV) is connected with supplementary wind aerator, returns normal pressure pulverized coal warehouse (I) by supplementary wind aerator one tunnel, removes burner by supplementary another road of wind aerator access coal dust.
2. a kind of pressurization of dry pulverized coal dense-phase transporting system according to claim 1, it is characterized in that: described normal pressure pulverized coal warehouse (I) arranges at least two feed openings, and lock hopper (III) is provided with lock hopper (III) number corresponding with feed opening number.
3. a kind of pressurization of dry pulverized coal dense-phase transporting system according to claim 1, it is characterized in that: the feed opening place of described normal pressure pulverized coal warehouse (I) is connected with normal pressure feed bin fluidized wind pipeline (15), and normal pressure feed bin fluidized wind pipeline (15) is connected to gas-holder (IX).
4. a kind of pressurization of dry pulverized coal dense-phase transporting system according to claim 1, is characterized in that: described lock hopper (III) is provided with lock hopper discharge filter (II), connects equaler road (13) by lock hopper discharge filter (II).
5. a kind of pressurization of dry pulverized coal dense-phase transporting system according to claim 1, it is characterized in that: described issuance of materials tank (IV) is provided with issuance of materials tank discharge filter (V), be connected with issuance of materials tank pressure release exhaust line (11) by issuance of materials tank discharge filter (V), issuance of materials tank pressure release exhaust line (11) and lock hopper pressure relief pipe (12) are also connected to the end of normal pressure feed bin exhaust line (16) behind road.
6. a kind of pressurization of dry pulverized coal dense-phase transporting system according to claim 1, it is characterized in that: the bottom of described issuance of materials tank (IV) supplements wind aerator after supplementing wind aerator (VI), coal valve (VII), coal valve before being connected with coal valve, supplement after coal valve wind aerator connect turn back to normal pressure pulverized coal warehouse (I) pipeline direction on be disposed with circulation line and supplement wind aerator (XI), circulation relief pipe (X).
7. a kind of pressurization of dry pulverized coal dense-phase transporting system according to claim 1, is characterized in that: supplement the pressurising air pipe line that wind aerator is all connected with high-pressure inert gas after supplementing wind aerator (VI), coal valve (VII), coal valve before described lock hopper discharge filter (II), lock hopper (III), issuance of materials tank discharge filter (V), issuance of materials tank (IV) bottom, coal valve.
8. a kind of pressurization of dry pulverized coal dense-phase transporting system according to claim 1, it is characterized in that: described coal dust supplements wind aerator (XII) before going to the front end of burner to be provided with burner, supplements the pressurising air pipe line that wind aerator (XII) is also connected with high-pressure inert gas before burner.
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| CN201520467494.4U CN204824761U (en) | 2015-07-02 | 2015-07-02 | Dry pulverized coal pressurization dense phase pipelining system |
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| CN201520467494.4U CN204824761U (en) | 2015-07-02 | 2015-07-02 | Dry pulverized coal pressurization dense phase pipelining system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969428A (en) * | 2016-05-25 | 2016-09-28 | 上海泽玛克敏达机械设备有限公司 | Gasification furnace and gasification furnace feeding device |
| CN107284883A (en) * | 2017-07-19 | 2017-10-24 | 陕西延长石油（集团）有限责任公司 | A kind of batch (-type) lock hopper pressurization pulverized coal conveying device and carrying method |
| CN107652990A (en) * | 2017-10-24 | 2018-02-02 | 北京神雾电力科技有限公司 | A kind of pyrolysis oven feed system |
| CN108067052A (en) * | 2016-11-09 | 2018-05-25 | 上海境业环保能源科技股份有限公司 | Coal dust charging pressure release filtration system |
| CN108504393A (en) * | 2018-06-01 | 2018-09-07 | 山东明泉新材料科技有限公司 | A kind of energy-efficient fine coal pressure-flow system |
| CN115231316A (en) * | 2022-09-22 | 2022-10-25 | 山东大学 | Fluidized powder supply system and method based on waste gas and waste residue chilling steel slag |
-
2015
- 2015-07-02 CN CN201520467494.4U patent/CN204824761U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969428A (en) * | 2016-05-25 | 2016-09-28 | 上海泽玛克敏达机械设备有限公司 | Gasification furnace and gasification furnace feeding device |
| CN108067052A (en) * | 2016-11-09 | 2018-05-25 | 上海境业环保能源科技股份有限公司 | Coal dust charging pressure release filtration system |
| CN107284883A (en) * | 2017-07-19 | 2017-10-24 | 陕西延长石油（集团）有限责任公司 | A kind of batch (-type) lock hopper pressurization pulverized coal conveying device and carrying method |
| CN107284883B (en) * | 2017-07-19 | 2024-01-23 | 陕西延长石油（集团）有限责任公司 | Intermittent lock hopper pressurized pulverized coal conveying device and conveying method |
| CN107652990A (en) * | 2017-10-24 | 2018-02-02 | 北京神雾电力科技有限公司 | A kind of pyrolysis oven feed system |
| CN108504393A (en) * | 2018-06-01 | 2018-09-07 | 山东明泉新材料科技有限公司 | A kind of energy-efficient fine coal pressure-flow system |
| CN115231316A (en) * | 2022-09-22 | 2022-10-25 | 山东大学 | Fluidized powder supply system and method based on waste gas and waste residue chilling steel slag |
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| 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 |