CN107269359A - A kind of diesel engine after treatment device heated with waste gas - Google Patents
A kind of diesel engine after treatment device heated with waste gas Download PDFInfo
- Publication number
- CN107269359A CN107269359A CN201710657327.XA CN201710657327A CN107269359A CN 107269359 A CN107269359 A CN 107269359A CN 201710657327 A CN201710657327 A CN 201710657327A CN 107269359 A CN107269359 A CN 107269359A
- Authority
- CN
- China
- Prior art keywords
- impeller
- conductive sheet
- control cabinet
- urea
- blending bin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention relates to automobile exhaust gas processing apparatus, more particularly to a kind of diesel engine after treatment device heated with waste gas, including engine, blending bin, catalyst assembly case, urea box, DCU control units and control cabinet；The inside of blending bin is provided with heating tube, impeller and puddler；The left and right sides inside control cabinet, which is equipped with slide rail, slide rail, is provided with sliding block, and the outer wall of control cabinet is provided with conductive sheet set.The present invention is when engine or vehicle are in low load operation, and the temperature of tail gas does not reach the initial temperature of urea sprinkling, and DCU control units can start heating tube, and tail gas is heated, to reach defined requirement；Impeller can blow tail gas downwards, be easy to tail gas to be combined with urea, and the rotation of puddler is conducive to urea fully to react with tail gas contacting；Principle of expanding with heat and contracting with cold is used in control cabinet, impeller and puddler are controlled, with actual effect.
Description
Technical field
The present invention relates to automobile exhaust gas processing apparatus, more particularly to place after a kind of diesel engine heated with waste gas
Manage device.
Background technology
Vehicle exhaust is the waste gas produced when automobile is used, and containing hundreds of different compound, pollutant therein has
Solid aerosol, carbon monoxide, carbon dioxide, hydrocarbon, oxynitrides, lead and oxygen sulfur compound etc..Tail gas exists
While being directly detrimental to health, the environment of human lives can also be exerted far reaching influence.Sulfur dioxide in tail gas has
Strong impulse smell, is easily caused the generation of " acid rain " when reaching finite concentration, cause soil and water source to be acidified, influence farming
Thing and the growth of forest.
Current China is mainly handled diesel engine vent gas using selective catalysis reaction system (SCR), but when hair
When motivation or vehicle are in low load operation, delivery temperature does not reach the initial temperature of urea sprinkling, can there is DCU control units
The situation that control nozzle does not spray, will be discharged into air, it is impossible to effectively so that portion cannot be handled
Reach the purpose of cleaning of off-gas；And for the mixing of urea and waste gas, traditional processing unit is directly sprayed using urea,
The drawbacks of in the presence of mixing uneven, insufficient.
The content of the invention
(1) technical problem solved
Present invention aims to overcome that there is provided locate after a kind of diesel engine heated with waste gas for the shortcoming of above-mentioned prior art
Device is managed, is solved when delivery temperature does not reach ureaclastic initial temperature, the problem of heated in real-time being carried out to waste gas.
(2) technical scheme
A kind of diesel engine after treatment device heated with waste gas, including engine, blending bin, catalyst assembly case, urea
Case, DCU control units and control cabinet, the engine, blending bin and catalyst assembly case are sequentially connected by pipeline, described mixed
The inside of mould assembling is provided with heating tube, impeller and puddler, and the heating tube is distributed on the inwall of blending bin in the shape of a spiral, described
Impeller is provided with 2, is divided into impeller I and impeller II, and the impeller I and impeller II are arranged at top, and the puddler is arranged on
Lower section；The urea box is connected with urea pump by conduit, and the urea pump is connected with shower nozzle, and the shower nozzle is arranged on blending bin
In；The DCU control units are connected with temperature sensor and nitrogen oxide sensor, and the temperature sensor and nitrogen oxide sensor are set
In the inside of catalyst assembly case, the heating tube, urea pump are also connected in DCU control units；The control cabinet is fixed on
On pipeline between generator and blending bin, the left and right sides inside the control cabinet is equipped with slide rail, the slide rail and is provided with
Sliding block, the sliding block is connected by spring with control cabinet, is connected between the sliding block by wire, and the outer wall of the control cabinet is set
Have and be arranged at intervals above and below conductive sheet set, the conductive sheet set, the conductive sheet set passes through wire and power supply, impeller I, the and of impeller II
Puddler is connected.
Further, it is provided with screen pack inside the pipeline between the blending bin and catalyst assembly case.
Further, the bottom surface of the control cabinet is set to diaphragm seal, and directly contacts with pipeline outer wall setting.
Further, the sliding block is set to metal derby, and the sliding block is in close contact with slide rail.
Further, the conductive sheet set includes 2 conducting strips, and the conducting strip is separately positioned on the left and right two of control cabinet
Side.
Further, the conductive sheet set is divided into conductive sheet set and lower conductive sheet set, and the upper conductive sheet set is led with
Electric piece group is arranged in parallel.
(3) beneficial effect
A kind of diesel engine after treatment device heated with waste gas that the present invention is provided, when engine or vehicle are in underload
Operating, when the temperature of tail gas does not reach the initial temperature of urea sprinkling, DCU control units start heating tube, and tail gas is added
Heat treatment, to reach defined requirement；Impeller can blow tail gas downwards, be easy to tail gas to be combined with urea, the rotation of puddler
Be conducive to urea fully to react with tail gas to contact；Principle of expanding with heat and contracting with cold is used in control cabinet, impeller and puddler are controlled,
With actual effect.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, used required for being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only the present invention, protect some embodiments, right
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is structural representation of the invention；
The mplifying structure schematic diagram that Fig. 2 is A in Fig. 1；
Fig. 3 is conductive sheet set in the present invention, power supply, the circuit connecting relation figure of impeller and puddler；
In accompanying drawing, the list of parts representated by each label is as follows：
1- generators, 2- blending bins, 3- catalyst assembly casees, 4- urea boxes, 5- urea pumps, 6-DCU control units, 7- controls
Case processed, 8- pipelines, 9- heating tubes, 10- impellers I, 11- impellers II, 12- puddlers, 13- temperature sensors, 14- nitrogen oxygen sensing
Conductive sheet set under device, 15- screen packs, 16- slide rails, 17- sliding blocks, the upper conductive sheet sets of 18-, 19-, 20- springs, 21- diaphragm seals,
22- wires, 23- conduits.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in FIG. 1 to 3, it is a kind of with waste gas heat diesel engine after treatment device, including engine 1, blending bin 2,
Catalyst assembly case 3, urea box 4, DCU control units 6 and control cabinet 7, engine 1, blending bin 2 and catalyst assembly case 3 are logical
Piping 8 is sequentially connected, and the inside of blending bin 2 is provided with heating tube 9, impeller and puddler 12, and heating tube 9 is distributed in the shape of a spiral
On the inwall of blending bin 2, impeller is provided with 2, is divided into impeller I 10 and impeller II 11, impeller I 10 and impeller II 11 are arranged at
Side, puddler 12 is arranged below；Urea box 4 is connected with urea pump 5 by conduit 22, and urea pump 5 is connected with shower nozzle, and shower nozzle is set
Put in blending bin 2；DCU control units 6 are connected with temperature sensor 13 and nitrogen oxide sensor 14, temperature sensor 13 and nitrogen oxygen
Sensor 14 is arranged on the inside of catalyst assembly case 3, and heating tube 9, urea pump 4 are also connected in DCU control units 6；Control
Case 7 is fixed on the pipeline 8 between generator 1 and blending bin 2, and the left and right sides inside control cabinet 7 is equipped with slide rail 16, slide rail
Sliding block 17 is provided with 16, sliding block 17 is connected with control cabinet 7 by spring 20, connected between sliding block 17 by wire 22, control cabinet 7
Outer wall be provided with conductive sheet set, be arranged at intervals above and below conductive sheet set, conductive sheet set passes through wire 22 and power supply, impeller I 10, impeller
II 11 and puddler 12 connect.
Further, the inside of pipeline 8 between blending bin 2 and catalyst assembly case 3 is provided with screen pack 15, and screen pack 15 can
To tail gas Partial filtration.
Further, the bottom surface of control cabinet 7 is set to diaphragm seal 21, and directly contacts setting with the outer wall of pipeline 8.
Further, sliding block 17 is set to metal derby, and sliding block 17 is in close contact with slide rail 16, make the gas of the top of sliding block 17 with
Lower section it is gas-insulated.
Further, conductive sheet set includes 2 conducting strips, and conducting strip is separately positioned on the left and right sides of control cabinet 7.
Further, conductive sheet set is divided into conductive sheet set 18 and lower conductive sheet set 19, upper conductive sheet set 18 and lower conduction
Piece group 19 is arranged in parallel.
The course of work of the present invention, the tail gas that generator 1 is discharged is transmitted in blending bin 2 by pipeline 8, due to exhaust temperature
Height, triggering DCU control units 6, then the control of DCU control units 6 urea pump 5, urea is transported to shower nozzle from conduit 23, right
Sprayed in blending bin 2；When tail gas is through piping 8, tube wall temperature rise is passed in diaphragm seal 21, and then control cabinet 7
Gas expansion, sliding block 17 is extruded, it is moved down, first contacted with upper conductive sheet set 18, circuit is switched on, impeller I 10
Started working with puddler 12, impeller I 10 blows downwards tail gas, puddler 12 can ensure the abundant reaction of tail gas and urea,
When tail gas amount increases in pipeline, temperature can be raised again, and sliding block 17 continues to move down, at the same with upper conductive sheet set 18 and lower conduction
Piece group 19 is contacted simultaneously, and impeller II 11 is also powered work, and effect is blown in enhancing, it is to avoid tail gas is excessive, and impeller action effect is failed to understand
It is aobvious；After urea reacts with tail gas, then the generation chemical reaction in catalyst assembly case 3, final output nitrogen and water, reach purification
The purpose of tail gas.If engine 1 is in low load operation, exhaust temperature is not high, can trigger the 6 pairs of heating of DCU control units
The startup of pipe 9, makes tail gas be heated to the temperature of requirement.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
At least one implementation that feature is contained in the present invention is lived with reference to specific features, structure, the material that the embodiment or example are described
In example or example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.
Moreover, specific features, structure, material or the feature of description can be closed in any one or more embodiments or example
Suitable mode is combined.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details of narration, the embodiment that the invention is only is not limited yet.Obviously, according to the content of this specification, it can make
Many modifications and variations.This specification is chosen and specifically describes these embodiments, be in order to preferably explain the present invention original
Reason and practical application, so that skilled artisan can be best understood by and utilize the present invention.The present invention is only authorized
The limitation of sharp claim and its four corner and equivalent.
Claims (6)
1. it is a kind of with waste gas heat diesel engine after treatment device, including engine, blending bin, catalyst assembly case, urea box,
DCU control units and control cabinet, it is characterised in that the engine, blending bin and catalyst assembly case are connected successively by pipeline
Connect, the inside of the blending bin is provided with heating tube, impeller and puddler, and the heating tube is distributed in the interior of blending bin in the shape of a spiral
On wall, the impeller is provided with 2, is divided into impeller I and impeller II, and the impeller I and impeller II are arranged at top, the stirring
Bar is arranged below；The urea box is connected with urea pump by conduit, and the urea pump is connected with shower nozzle, and the shower nozzle is set
In blending bin；The DCU control units are connected with temperature sensor and nitrogen oxide sensor, and temperature sensor and the nitrogen oxygen is passed
Sensor is arranged on the inside of catalyst assembly case, and the heating tube, urea pump are also connected in DCU control units；The control
Case is fixed on the pipeline between generator and blending bin, and the left and right sides inside the control cabinet is equipped with slide rail, the cunning
Sliding block is provided with rail, the sliding block is connected with control cabinet by spring, connected between the sliding block by wire, the control cabinet
Outer wall be provided with conductive sheet set, be arranged at intervals above and below the conductive sheet set, the conductive sheet set by wire and power supply, impeller I,
Impeller II and puddler connection.
2. according to claim 1 it is a kind of with waste gas heat diesel engine after treatment device, it is characterized in that, the mixing
Screen pack is provided with inside pipeline between case and catalyst assembly case.
3. a kind of diesel engine after treatment device heated with waste gas according to claim 1, it is characterised in that the control
The bottom surface of case is set to diaphragm seal, and directly contacts with pipeline outer wall setting.
4. a kind of diesel engine after treatment device heated with waste gas according to claim 1, it is characterised in that the sliding block
Metal derby is set to, the sliding block is in close contact with slide rail.
5. a kind of diesel engine after treatment device heated with waste gas according to claim 1, it is characterised in that the conduction
Piece group includes 2 conducting strips, and the conducting strip is separately positioned on the left and right sides of control cabinet.
6. a kind of diesel engine after treatment device heated with waste gas according to claim 1, it is characterised in that the conduction
Piece component is upper conductive sheet set and lower conductive sheet set, and the upper conductive sheet set and lower conductive sheet set are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710657327.XA CN107269359B (en) | 2017-08-03 | 2017-08-03 | A kind of diesel engine after treatment device with exhaust gas heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710657327.XA CN107269359B (en) | 2017-08-03 | 2017-08-03 | A kind of diesel engine after treatment device with exhaust gas heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107269359A true CN107269359A (en) | 2017-10-20 |
| CN107269359B CN107269359B (en) | 2019-08-16 |
Family
ID=60075542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710657327.XA Active CN107269359B (en) | 2017-08-03 | 2017-08-03 | A kind of diesel engine after treatment device with exhaust gas heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107269359B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708304A (en) * | 2019-02-22 | 2019-05-03 | 南通港华锅炉有限公司 | A kind of hot-water boiler of high combustion efficiency |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003100225A1 (en) * | 2002-05-07 | 2003-12-04 | Extengine Transport Systems | Emission control system |
| CN205315084U (en) * | 2015-12-24 | 2016-06-15 | 东风康明斯发动机有限公司 | Vent gas treatment system in is assisted in diesel engine electrical heating |
| CN206254773U (en) * | 2016-11-16 | 2017-06-16 | 浙江群实王网络科技有限公司 | A kind of roof heat insulation plate |
-
2017
- 2017-08-03 CN CN201710657327.XA patent/CN107269359B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003100225A1 (en) * | 2002-05-07 | 2003-12-04 | Extengine Transport Systems | Emission control system |
| CN205315084U (en) * | 2015-12-24 | 2016-06-15 | 东风康明斯发动机有限公司 | Vent gas treatment system in is assisted in diesel engine electrical heating |
| CN206254773U (en) * | 2016-11-16 | 2017-06-16 | 浙江群实王网络科技有限公司 | A kind of roof heat insulation plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708304A (en) * | 2019-02-22 | 2019-05-03 | 南通港华锅炉有限公司 | A kind of hot-water boiler of high combustion efficiency |
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| Publication number | Publication date |
|---|---|
| CN107269359B (en) | 2019-08-16 |
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Address after: Shuangfeng Industrial Zone of Hefei City, Anhui province 230000 Patentee after: Hefei Yunnei Power Co., Ltd Address before: Shuangfeng road Shuangfeng Development Zone in Hefei City, Anhui Province, No. 015 230000 Patentee before: Hefei Jianghuai chaochai Power Co. Ltd. |