CN109538344B - High-power diesel engine with internal and external double-circulation water cooling system - Google Patents
High-power diesel engine with internal and external double-circulation water cooling system Download PDFInfo
- Publication number
- CN109538344B CN109538344B CN201811231780.5A CN201811231780A CN109538344B CN 109538344 B CN109538344 B CN 109538344B CN 201811231780 A CN201811231780 A CN 201811231780A CN 109538344 B CN109538344 B CN 109538344B
- Authority
- CN
- China
- Prior art keywords
- water
- cooling
- cooling system
- diesel engine
- water jacket
- 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.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/021—Cooling cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/024—Cooling cylinder heads
-
- 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Exhaust Gas After Treatment (AREA)
- Supercharger (AREA)
Abstract
The invention provides a high-power diesel engine with an internal and external double-circulation water cooling system, which comprises an explosion-proof diesel engine body, an air inlet system, an exhaust system and a cooling system, wherein the cooling system comprises an internal circulation cooling system and an external circulation cooling system which all adopt water cooling circulation systems, the internal circulation system comprises a radiator, a first water pump, a first cylinder body water jacket, a first cylinder cover water jacket, an exhaust branch pipe water jacket, a cooling supercharger water jacket and a water return pipeline, and the radiator is sequentially communicated with the first water pump, the first cylinder body water jacket, the first cylinder cover water jacket, the exhaust branch pipe water jacket, the cooling supercharger water jacket and the water return pipeline end to form a first internal circulation water loop. Simple structure, less noise and stable operation.
Description
Technical Field
The invention relates to the field of diesel engine equipment, in particular to a high-power diesel engine with an internal and external double-circulation water cooling system.
Background
The high-power explosion-proof diesel engine for the trackless rubber-tyred special vehicle for the coal mine in China is basically not produced at home, only a small amount of domestic engines below 160KW adopting North China diesel engine plants and Shanghai diesel engine plants are tried out in the coal mine after being transformed, the existing coal mine has urgent requirements on a large-tonnage transport vehicle, the explosion-proof diesel engine with higher power under the same volume and size needs to be produced, and the requirements on high power and exhaust emission of the diesel engine are stricter. However, the explosion-proof diesel engine reformed by oriental red 6105 and Poweringz 6105 can only reach within 80KW, and the turbocharging of the Cummins 6102 can only reach 110KW, which can not meet the power requirement of the explosion-proof vehicle of more than 10 tons. And the discharge index of the naturally aspirated diesel engine or the turbo-charged diesel engine is poorer than that of the supercharged air-to-air intercooled diesel engine, so that the environment-friendly requirement cannot be met.
Disclosure of Invention
The invention mainly aims to provide a high-power diesel engine with an internal and external double-circulation water cooling system, which aims to solve the technical problems that the conventional explosion-proof diesel engine can only reach within 160KW, cannot meet the requirements of large and heavy special vehicles, and is high in oil consumption, poor in emission and large in volume and weight.
In order to achieve the above purpose, the invention provides a high-power diesel engine with an internal and external double-circulation water cooling system, which comprises an explosion-proof diesel engine body, an air inlet system, an exhaust system and a cooling system, wherein the cooling system comprises an internal circulation cooling system and an external circulation cooling system which are all water-cooling circulation systems, the internal circulation system comprises a radiator, a first water pump, a first cylinder body water jacket, a first cylinder cover water jacket, an exhaust branch pipe water jacket, a cooling supercharger water jacket and a water return pipeline, the radiator is sequentially communicated with the first water pump, the first cylinder body water jacket, the first cylinder cover water jacket, the exhaust branch pipe water jacket, the cooling supercharger water jacket and the water return pipeline end to form a first internal circulation water loop, the first water pump is sequentially communicated with the first cylinder body water jacket, the first cylinder cover water jacket, the water return pipeline and the radiator end to end, the external circulation cooling system comprises a second water pump, a water replenishing tank and an exhaust main pipe, one end of the second water pump is communicated with the air inlet end of the exhaust main pipe, the other end of the second water pump is communicated with the water inlet of the water replenishing tank, and the water outlet of the water replenishing tank is communicated with the water inlet of the waste gas treatment tank.
Further, air intake system includes water-cooling booster compressor and water-cooling booster, the outlet end of calming anger of water-cooling booster compressor connects gradually through the intake pipe and admits air shut-off valve, empty air intercooler, the spark arrester of admitting air, diesel engine cylinder cap, the one-level cooling is formed to the welding airstrainer in the intake pipe of the shut-off valve of admitting air.
Further, the air-air intercooler adopts the fan to refrigerate, and the fan just to install in intake pipe department of air inlet shutoff valve installs cold water spray set at the fan top, forms the condensate water fog under the fan flapping effect and blows to the intake pipe, forms the second grade cooling.
Furthermore, a shell of the air inlet flame arrester is wrapped by a layer of high-thermal-conductivity heat dissipation silicone grease to form three-level cooling.
Further, the radiator comprises a first radiating part and a second radiating part, and the first radiating part is communicated with the air-air intercooler through a water cooling pipeline.
Furthermore, the first radiating part is a water-cooling radiator, the second radiating part is an oil-cooling radiator, an expansion water tank is mounted on the outer wall of the top of the second radiating part, and the expansion water tank is respectively connected with the exhaust branch pipe water jacket and the first cylinder cover water jacket in series through a pipeline loop.
Further, the external circulation cooling system is divided into two loops behind the water jacket of the exhaust main pipe, one end of the exhaust main pipe is communicated with a flange plate of the water-cooled supercharger to form a first external circulation cooling loop, the other end of the exhaust main pipe is communicated with the wall of the exhaust gas treatment tank to form a second external circulation cooling loop, and the first external circulation cooling loop and the second external circulation cooling loop are communicated with the water replenishing tank to be cooled again.
Further, the water outlet of the water replenishing tank is communicated with the water inlet of the waste gas treatment tank and used for mixing and vaporizing waste gas to cool the waste gas to 70 ℃ and discharging the cooled waste gas into the atmosphere.
The invention has the beneficial effects that:
1. the invention provides a high-power explosion-proof diesel engine with an internal and external double-circulation water cooling system, which enables the output power of the whole explosion-proof diesel engine to be more than 160KW and is more economical than oil consumption;
2. the invention provides a high-power explosion-proof diesel engine with an internal and external double-circulation water cooling system, which greatly improves the exhaust emission index of the explosion-proof diesel engine and meets the requirement of environmental protection.
3. The invention provides a high-power explosion-proof diesel engine with an internal and external double-circulation water cooling system, which has the advantages of reasonable design, simple structure, smaller noise and stable work.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a front view of a high-power explosion-proof diesel engine with an internal and external double-circulation water cooling system provided by the invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a top view of fig. 1.
FIG. 4 is a schematic structural diagram of an air intake system in a high-power explosion-proof diesel engine with an internal and external double-circulation water cooling system provided by the invention.
In the figure: 1. the anti-explosion diesel engine comprises an anti-explosion diesel engine body, a gas inlet system, a gas exhaust system, a cooling system, a waste gas treatment tank, a waste gas treatment valve, a waste gas treatment tank, a waste gas treatment device.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the above objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and preferred embodiments, it being understood that the embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
As shown in fig. 1 to 4, an internal and external double circulation water cooling system high power diesel engine includes an explosion-proof diesel engine body 1, an intake system 2, an exhaust system 3, and a cooling system 4, where the cooling system 4 includes an internal circulation cooling system 40 and an external circulation cooling system 41, both of which adopt water cooling circulation systems, the internal circulation system 40 includes a radiator 401, a first water pump 402, a first cylinder water jacket 403, a first cylinder water jacket 404, an exhaust branch water jacket 405, a cooling supercharger water jacket 406, and a water return pipe 407, the radiator 401 is sequentially communicated with the first water pump 402, the first cylinder water jacket 403, the first cylinder water jacket 404, the exhaust branch water jacket 405, the cooling supercharger water jacket 406, and the water return pipe 407 end to form a first internal circulation water loop, the first water pump 402 is sequentially communicated with the first cylinder water jacket 403 and the first cylinder water jacket 404, end to end intercommunication forms second internal circulation water circuit between return water pipe 407 and radiator 401, outer circulative cooling system 41 includes second water pump 410, moisturizing case 411 and exhaust manifold 412, second water pump 410 one end with exhaust manifold 412 inlet end intercommunication, the other end with moisturizing case 411 water inlet intercommunication, moisturizing case 411 delivery port and exhaust-gas treatment case 5 water inlet intercommunication.
In a preferred embodiment of the invention, referring to fig. 1 and 4, an air intake system 2 comprises a water-cooled supercharger compressor 20 and a water-cooled supercharger 21, an air outlet end of the water-cooled supercharger compressor 20 is sequentially connected with an air intake shut-off valve 6, an air-air intercooler 7, an air intake flame arrester 8 and a diesel engine cylinder cover 9 through an air intake pipe, an air filter screen is welded in the air intake pipe of the air intake shut-off valve 6 to form primary cooling, the air-air intercooler 7 is cooled by a fan, the fan is opposite to the air intake pipe arranged at the air intake pipe of the air intake shut-off valve 6, a cold water spray device 10 is arranged at the top of the fan, condensed water mist is formed under the flapping action of the fan and blown to the air intake pipe to form secondary cooling, a shell of the air intake flame arrester 8 is wrapped with a layer of high thermal conductivity heat dissipation silicone grease to form tertiary cooling, and, the internal and external double-circulation water cooling system of the diesel engine can ensure proper water temperature for cooling circulation.
In a preferred embodiment of the present invention, referring to fig. 1,2 and 3, the heat sink 401 includes a first heat sink 4010 and a second heat sink 4011, the first heat sink 4010 is communicated with the air-air intercooler 7 through a water-cooled pipe, the first heat sink 4010 is a water-cooled heat sink, the second heat sink 4011 is an oil-cooled heat sink, an expansion tank 11 is mounted on the top outer wall of the second heat sink 4011, and the expansion tank 11 is connected in series with the exhaust branch pipe water jacket 405 and the first head water jacket 404 through pipe loops.
In a preferred embodiment of the present invention, referring to fig. 1,2 and 4, the external circulation cooling system 41 is divided into two loops after the exhaust manifold water jacket 412, one end of the exhaust manifold 412 is communicated with the flange of the water-cooled supercharger 21 to form a first external circulation cooling loop, the other end is communicated with the wall of the exhaust gas treatment tank 5 to form a second external circulation cooling loop, the first external circulation cooling loop and the second external circulation cooling loop are communicated with the water replenishing tank 411 for cooling again, and the water outlet of the water replenishing tank 411 is communicated with the water inlet of the exhaust gas treatment tank 5 for mixing and vaporizing the exhaust gas to cool the exhaust gas to 70 degrees centigrade and discharging the exhaust gas into the atmosphere.
The invention provides a high-power explosion-proof diesel engine with an internal and external double-circulation water cooling system, which enables the output power of the whole explosion-proof diesel engine to be more than 160KW, is more economical than oil consumption, and has the advantages of reasonable design, simple structure, smaller noise and stable work.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims, i.e., equivalent modifications within the scope of the present invention.
Claims (5)
1. The utility model provides a high-power diesel engine of inside and outside two circulating water cooling system, includes explosion-proof diesel engine body (1), air intake system (2) and exhaust system (3), its characterized in that: the cooling system (4) comprises an inner circulation cooling system (40) and an outer circulation cooling system (41), and water cooling circulation systems are adopted, wherein the inner circulation cooling system (40) comprises a radiator (401), a first water pump (402), a first cylinder body water jacket (403), a first cylinder cover water jacket (404), an exhaust branch water jacket (405), a cooling supercharger water jacket (406) and a water return pipeline (407), the radiator (401) is communicated with the first water pump (402), the first cylinder body water jacket (403), the first cylinder cover water jacket (404), the exhaust branch water jacket (405), the cooling supercharger water jacket (406) and the water return pipeline (407) in sequence from end to form a first inner circulation water loop, and the first water pump (402) is communicated with the first cylinder body water jacket (403), the first cylinder cover water jacket (404), the water return pipeline (407) and the radiator (401) in sequence from end to form a second inner circulation water loop, the external circulation cooling system (41) comprises a second water pump (410), a water supplementing tank (411) and an exhaust main pipe (412), one end of the second water pump (410) is communicated with the air inlet end of the exhaust main pipe (412), the other end of the second water pump is communicated with the water inlet of the water supplementing tank (411), and the water outlet of the water supplementing tank (411) is communicated with the water inlet of the waste gas treatment tank (5);
the air inlet system (2) comprises a water-cooling supercharger compressor (20) and a water-cooling supercharger (21), wherein the air outlet end of the water-cooling supercharger compressor (20) is sequentially connected with an air inlet shutoff valve (6), an air-air intercooler (7), an air inlet flame arrester (8) and a diesel engine cylinder cover (9) through an air inlet pipe, and an air filter screen is welded in the air inlet pipe of the air inlet shutoff valve (6) to form primary cooling;
the air-air intercooler (7) is refrigerated by a fan, the fan is opposite to an air inlet pipe arranged on the air inlet shutoff valve (6), a cold water spraying device (10) is arranged at the top of the fan, and condensed water mist is formed under the flapping action of the fan and blown to the air inlet pipe to form secondary cooling; and a shell of the air inlet flame arrester (8) is wrapped by a layer of high-thermal-conductivity heat-dissipation silicone grease to form three-stage cooling.
2. The high-power diesel engine with an internal and external double circulating water cooling system as claimed in claim 1, wherein: the heat radiator (401) comprises a first heat dissipation part (4010) and a second heat dissipation part (4011), and the first heat dissipation part (4010) is communicated with the air-air intercooler (7) through a water cooling pipeline.
3. The high-power diesel engine with internal and external double circulating water cooling systems as claimed in claim 2, wherein: the first heat dissipation part (4010) is a water-cooling heat radiator, the second heat dissipation part (4011) is an oil-cooling heat radiator, an expansion water tank (11) is mounted on the outer wall of the top of the second heat dissipation part (4011), and the expansion water tank (11) is connected with the exhaust branch pipe water jacket (405) and the first cylinder cover water jacket (404) in series through a pipeline loop.
4. The high-power diesel engine with an internal and external double circulating water cooling system as claimed in claim 1, wherein: the external circulation cooling system (41) is divided into two loops after an exhaust manifold (412), one end of the exhaust manifold (412) is communicated with a flange plate of the water-cooled supercharger (21) to form a first external circulation cooling loop, the other end of the exhaust manifold is communicated with the wall of the exhaust gas treatment box (5) to form a second external circulation cooling loop, and the first external circulation cooling loop and the second external circulation cooling loop are communicated with a water replenishing box (411) to be cooled again.
5. The high-power diesel engine with an internal and external double circulating water cooling system as claimed in claim 1, wherein: and the water outlet of the water replenishing tank (411) is communicated with the water inlet of the waste gas treatment tank (5) and is used for mixing and vaporizing waste gas to cool the waste gas to 70 ℃ and discharging the cooled waste gas into the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811231780.5A CN109538344B (en) | 2018-10-22 | 2018-10-22 | High-power diesel engine with internal and external double-circulation water cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811231780.5A CN109538344B (en) | 2018-10-22 | 2018-10-22 | High-power diesel engine with internal and external double-circulation water cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109538344A CN109538344A (en) | 2019-03-29 |
| CN109538344B true CN109538344B (en) | 2020-10-27 |
Family
ID=65844221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811231780.5A Active CN109538344B (en) | 2018-10-22 | 2018-10-22 | High-power diesel engine with internal and external double-circulation water cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109538344B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009108704A (en) * | 2007-10-26 | 2009-05-21 | Mazda Motor Corp | Engine cooling system |
| CN101705859B (en) * | 2009-11-05 | 2011-09-28 | 煤炭科学研究总院太原研究院 | Cooling device for explosion-proof diesel engine |
| CN202091018U (en) * | 2011-06-09 | 2011-12-28 | 东风汽车股份有限公司 | cooling device for explosion-proof diesel engine |
| CN103603717A (en) * | 2013-12-11 | 2014-02-26 | 湖北康晨安宝矿业设备有限责任公司 | High-power explosion-proof diesel engine of inner and outer bicirculating water cooling system |
| CN105221308A (en) * | 2014-07-04 | 2016-01-06 | 无锡国煤重工机械有限公司 | There is the anti-explosion diesel engine of flame trap |
-
2018
- 2018-10-22 CN CN201811231780.5A patent/CN109538344B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109538344A (en) | 2019-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103603717A (en) | High-power explosion-proof diesel engine of inner and outer bicirculating water cooling system | |
| CN103016190B (en) | Cylinder cover for turbo-charged diesel engine | |
| CN202756083U (en) | Overhead intercooler for diesel engine | |
| CN210239843U (en) | High-low temperature circulating cooling system of engine | |
| CN203655407U (en) | High-power explosion-proof diesel engine with inner circulation water cooling system and outer circulation water cooling system | |
| CN109538344B (en) | High-power diesel engine with internal and external double-circulation water cooling system | |
| CN203223281U (en) | Exhaust device of explosion-proof diesel engine | |
| CN202578890U (en) | Three-in-one type radiator for power generator | |
| CN203114393U (en) | Diesel engine water cooling air exhaust pipe | |
| CN207960891U (en) | A kind of automobile-used water-cooling air compressor | |
| CN210564825U (en) | Waste gas recirculation device of mixed-flow turbocharging double-cylinder diesel engine | |
| CN210660363U (en) | Engine exhaust gas recirculation cooling system and engine | |
| CN103628973B (en) | Cold anti-explosion diesel engine in air-air | |
| CN204126719U (en) | A kind of simplex pressure oil engine intercooler suction chamber and intercooler | |
| CN210264958U (en) | Diesel engine EGR system | |
| CN207598348U (en) | A kind of automobile double-row type charge inter cooling system | |
| CN203717167U (en) | Gas supply device of hydrogen internal combustion engine | |
| CN203655415U (en) | Air-air intercooling explosion-proof diesel engine | |
| CN207554225U (en) | A kind of cooler for recycled exhaust gas of high cooling efficiency | |
| CN108590810B (en) | Water-cooling noise-reducing cooling silencer | |
| CN104420978A (en) | Overhead intercooler for diesel engine | |
| CN203769929U (en) | Water and air mixed type intercooler | |
| CN204591457U (en) | A kind of bracket carrier power assembly | |
| CN203515782U (en) | Overhead intercooler for diesel engine | |
| CN201568163U (en) | Automobile engine EGR assembly air inlet structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221108 Address after: 441000 No. 16, YEDIAN Road, high tech Zone, Xiangyang City, Hubei Province Patentee after: XIANGYANG MEIBIAO LANGYUAN POWER INDUSTRIAL CO.,LTD. Address before: 441000 No. 16, YEDIAN Road, high tech Zone, Xiangyang City, Hubei Province Patentee before: XIANGYANG QUANXIKANG POWER MACHINERY CO.,LTD. |