CN107120194B - Fuel self-adaptive distribution device and gas turbine - Google Patents
Fuel self-adaptive distribution device and gas turbine Download PDFInfo
- Publication number
- CN107120194B CN107120194B CN201710381276.2A CN201710381276A CN107120194B CN 107120194 B CN107120194 B CN 107120194B CN 201710381276 A CN201710381276 A CN 201710381276A CN 107120194 B CN107120194 B CN 107120194B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- fuel
- control element
- compression spring
- annular shoulder
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/222—Fuel flow conduits, e.g. manifolds
Abstract
The invention relates to the technical field of gas turbines, and discloses a fuel self-adaptive distribution device and a gas turbine. The dispensing device includes: the device comprises a first pipeline and a second pipeline communicated with the first pipeline, wherein one end of the first pipeline is a gas inlet, the other end of the first pipeline is connected with a precombustion stage fuel inlet of the gas turbine, and the second pipeline is connected with a main combustion stage fuel inlet of the gas turbine; the device comprises a first pipeline, a second pipeline, a control element, a fuel hole, a compression spring, a control element and a control element, wherein the annular shoulder is arranged in the first pipeline, the control element is slidably assembled in the first pipeline, the fuel hole is arranged on the control element, the diameter of the fuel hole is smaller than the inner diameter of the first pipeline, the compression spring is arranged between the annular shoulder and the control element, and when the compression spring is compressed, the first pipeline and the second pipeline are communicated. In the implementation, the control element opens the second pipeline according to the flow velocity of the fuel gas, so that the fuel distribution of the main combustion stage and the precombustion stage of the fuel gas is automatically controlled, the temperature in the combustion chamber is favorably controlled, and the emission pollution is reduced.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a fuel self-adaptive distribution device and a gas turbine.
Background
The gas turbine has the characteristics of compact structure, light weight, low maintenance cost and the like, and can be widely applied to the field of distributed power generation. The combustion products of gas turbines contain NOx (nitrogen oxides), which mainly contain NO and NO2.NO is a colorless odorless gas, and if the concentration of NO in the atmosphere reaches a certain level, it can combine with hemoglobin in blood, and cause oxygen deficiency in blood, thereby causing central nerve paralysis. NO2 is a red poisonous gas, has stimulation effect on human respiratory organs, is easy to cause emphysema and lung cancer, and NO2 can also destroy ozone to form ozone cavities. Technical measures are taken to reduce the NOx emissions of the gas turbine as much as possible.
In gas turbines, the temperature at which the fuel is combusted in the combustion chamber has a very large impact on NOx, and the NOx production and rate of formation increases exponentially with increasing combustion temperature. Therefore, the key to reducing the NOx emissions of the gas turbine is to control the temperature in the combustion chamber at a lower level (typically 1700K-1900K, which affects the combustion efficiency), so it is of great importance to control the temperature in the combustion chamber.
Disclosure of Invention
The invention provides a fuel self-adaptive distribution device and a gas turbine, which realize the automatic control of fuel distribution of a main combustion stage and a precombustion stage of the device, are beneficial to controlling the temperature in a combustion chamber and reduce emission pollution.
The present invention provides a fuel self-adaptive dispensing device, comprising: the device comprises a first pipeline and a second pipeline communicated with the first pipeline, wherein one end of the first pipeline is a gas inlet, the other end of the first pipeline is used for being connected with a precombustion stage fuel inlet of a gas turbine, and the second pipeline is used for being connected with a main combustion stage fuel inlet of the gas turbine; wherein, the liquid crystal display device comprises a liquid crystal display device,
an annular shoulder is arranged in the first pipeline, a control element is slidably arranged in the first pipeline, a fuel hole which is communicated with the fuel gas inlet and the precombustion stage fuel inlet is formed in the control element, the diameter of the fuel hole is smaller than the inner diameter of the first pipeline, and a compression spring is arranged between the annular shoulder and the control element; when the compression spring is in a free state, the control element seals the communication part of the first pipeline and the second pipeline, and after the compression spring is compressed for a set distance, the first pipeline is communicated with the second pipeline.
In the implementation, the control element is arranged in the first pipeline, and the second pipeline is opened by the control element according to the flow rate of the fuel gas, so that the fuel distribution of the main combustion stage and the precombustion stage of the fuel gas is automatically controlled, the temperature in the combustion chamber is favorably controlled, and the emission pollution is reduced.
In a specific embodiment, the control element is a cylindrical structure with an open end, and the fuel hole is provided on the closed end of the cylindrical structure.
In a specific embodiment, the compression spring portion is inserted into the tubular structure and presses against the closed end of the tubular structure.
In a specific embodiment, a through hole is formed in the side wall of the cylindrical structure, and when the compression spring is in a free state, the through hole is blocked by the inner wall of the first pipeline, and when the compression spring is compressed for a set distance, the through hole is communicated with the second pipeline.
In a specific embodiment, the second conduit is an L-shaped bent conduit.
In a specific embodiment, the fuel bore is coaxially disposed with the bore between the annular shoulders.
In a specific embodiment, the distance from the annular shoulder to where the second conduit communicates with the first conduit is greater than the length of the control element.
In a specific embodiment, the first conduit is of unitary construction with the annular shoulder.
In a specific embodiment, the first pipe is a stepped pipe and the control element and the annular shoulder are both located within the larger diameter pipe of the first pipe.
The present invention also provides a gas turbine comprising a fuel adaptive distribution device according to any one of the preceding claims.
In the implementation, the control element is arranged in the first pipeline, and the second pipeline is opened by the control element according to the flow rate of the fuel gas, so that the fuel distribution of the main combustion stage and the precombustion stage of the fuel gas is automatically controlled, the temperature in the combustion chamber is favorably controlled, and the emission pollution is reduced.
Drawings
FIG. 1 is a schematic plan view of a fuel-adaptive dispensing device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a fuel-adaptive dispensing device provided in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a control element according to an embodiment of the present invention;
FIG. 4 is a reference diagram of the usage status of the fuel adaptive distribution device according to the embodiment of the present invention;
fig. 5 to 7 are state flowcharts of a fuel adaptive distribution device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2 together, fig. 1 and 2 show the structure of the fuel adaptive distribution device at different angles, respectively.
The embodiment of the invention provides a fuel self-adaptive distribution device, the main structure of the distribution device comprises two pipelines, namely a first pipeline 23 and a second pipeline 22, wherein one end of the first pipeline 23 is a fuel inlet 21, the other end of the first pipeline is a precombustion stage fuel inlet 21 connection port, the second pipeline 22 is communicated with the first pipeline 23, and when the first pipeline 23 and the second pipeline 22 are specifically connected, a T-shaped structure is formed, namely the communication part of the second pipeline 22 and the first pipeline 23 is positioned on the side wall of the first pipeline 23, and one end of the second pipeline 22 far away from the first pipeline 23 is a main combustion stage fuel inlet 21 connection port. In a specific connection, the connection port of the pre-stage fuel inlet 21 of the first conduit 23 is connected to the pre-stage fuel inlet 21 of the gas turbine, and the connection port of the main-stage fuel inlet 21 of the second conduit 22 is connected to the main-stage fuel inlet 21 of the gas turbine. In order to achieve automatic control of the fuel distribution of the main and pre-combustion stages, a control element 26 is provided in the distribution device provided in this embodiment, and the control element 26 is provided with a fuel hole 27 communicating the gas inlet with the pre-combustion stage fuel inlet 21, the diameter of the fuel hole 27 being smaller than the inner diameter of the first pipe 23, in particular the first pipe 23 is slidably fitted with the control element 26, and an annular shoulder 24 is provided in the first pipe 23, the annular shoulder 24 being intended to cooperate with the control element 26. In particular, the first conduit 23 is of unitary construction with the annular shoulder 24 for improved stability. Thereby ensuring the connection strength of the annular shoulder 24 and the first pipeline 23, and the first pipeline 23 and the annular shoulder 24 can be integrally injection molded in an injection molding mode during specific manufacturing. In addition, the fuel bore 27 is arranged coaxially with the bore between the annular shoulder 24 in order to increase the flowability of the fuel gas. Thereby ensuring that the fuel gas can smoothly circulate in the first duct 23.
With continued reference to fig. 1 and 2, in a specific arrangement, a compression spring 25 is disposed between the annular shoulder 24 and the control element 26, two ends of the compression spring 25 respectively press against the annular shoulder 24 and the control element 26, and when the compression spring 25 is in a free state, the control element 26 seals the communication between the first pipe 23 and the second pipe 22, and after the compression spring 25 is compressed by a set distance, the first pipe 23 is communicated with the second pipe 22.
Referring to fig. 3 together, fig. 3 shows a structure of a control element 26 provided in this embodiment, the control element 26 is a cylindrical structure with an opening at one end, and a fuel hole 27 is provided at one closed end of the cylindrical structure. Wherein the tubular structure opens towards the annular shoulder 24 and the compression spring 25 is partially inserted into the tubular structure and presses against the closed end of the tubular structure. When the structure is adopted, when the compression spring 25 is compressed, the deformation direction of the compression spring 25 is ensured by the limitation of the side wall of the cylindrical structure, the condition that the compression spring 25 is bent when being compressed is avoided, and the compression spring 25 can work stably is ensured.
With continued reference to fig. 1 and 2, as can be seen from fig. 1 and 2, the first pipe 23 provided in this embodiment is a straight pipe, and the second pipe 22 is an L-shaped bent pipe. More specifically, the first pipe 23 is a stepped pipe, and the control element 26 and the annular shoulder 24 are both located in the larger diameter pipe of the first pipe 23, and the connection between the second pipe 22 and the first pipe 23 is also located in the larger diameter pipe of the first pipe 23.
In the above embodiment, since the diameter of the fuel hole 27 provided on the control member 26 is smaller than the inner diameter of the first pipe 23, it is known from the fluid mechanics that the air flow has a pressure difference on both sides of the fuel hole 27, and thus the sliding of the control member 26 by the gas can be achieved. When the gas inlet is filled with gas, the flow rate of the gas is continuously increased, along with the continuous increase of the flow rate of the gas, the pressure of the compression spring 25 is gradually overcome to push the control element 26, and when the control element 26 is pushed away entirely, the first pipeline 23 is communicated with the second pipeline 22 when the cylindrical structure side wall of the control element 26 seals the communication part of the first pipeline 23 and the second pipeline 22 in the initial position, and at the moment, the gas can enter the main combustion stage fuel inlet 21. In this way, the communication between the first duct 23 and the second duct 22 is obtained by pushing the entire control element 26 apart, the distance from the annular shoulder 24 to the point where the second duct 22 communicates with the first duct 23 being greater than the length of the control element 26. Thereby ensuring that there is sufficient space between the connection and the annular shoulder 24 to accommodate the control element 26. In addition, other ways may be used to achieve the communication, for example, a through hole may be provided on a side wall of the cylindrical structure, and when the compression spring 25 is in a free state, the through hole is blocked by an inner wall of the first pipe 23, and when the compression spring 25 is compressed by a set distance, the through hole is communicated with the second pipe 22. At this time, the entire control element 26 is not required to be pushed away, and the control element 26 is only required to be pushed so that the through hole communicates with the communication place.
In order to facilitate the dispensing device provided in this embodiment, a detailed description thereof will be given below with reference to fig. 4. Fig. 4 shows the structure of a gas turbine, i.e. the use of the distribution device, with reference to fig. 4, the gas turbine comprising a casing 12, the casing 12 being connected to an air inlet 13, a premixing device 16 being arranged in the casing 12, and a combustion chamber 15 being connected to the premixing device 16, the combustion chamber 15 being connected to a gas outlet 14, and the premixing device 16 being connected to inlet ducts of the main and pre-combustion stages. In particular use, the first conduit 23 and the second conduit 22 of the fuel-adaptive distribution device 11 provided in this embodiment are respectively connected to the pre-combustion stage fuel inlet 21 and the main-combustion stage fuel inlet 21.
Referring also to fig. 5-7, in particular use, when the gas turbine is started, the control element 26 is positioned at position 31 as shown in fig. 5, the control element 26 blocks the flow path to the main stage fuel inlet 21, and fuel entering from the fuel inlet 21 passes through the fuel holes 27 in the control element 26 to the pre-stage fuel inlet 21, so that only the pre-stage fuel in the combustion chamber 15 is in combustion operation. As the amount of fuel increases, the pressure difference across the fuel hole 27 becomes larger and the compression spring 25 is compressed when the pressure difference is larger than the spring force of the compression spring 25, so that the position of the control element 26 moves with the compression spring 25, at which point the control element 26 is in the position 32 shown in fig. 6, where a part of the fuel passes through the main stage fuel inlet 21, so that the main stage in the combustion chamber 15 starts to burn fuel. As the fuel volume increases further, the pressure difference across the fuel orifice 27 increases and the compression spring 25 is compressed further, and the final control element 26 is positioned as shown in fig. 7 at 33, at which time the main combustion stage reaches a maximum fuel volume and the combustion chamber 15 is operating with stable combustion.
As can be seen from the above description, the distribution device provided in this embodiment is provided with the control element 26 in the first pipe 23, and the second pipe 22 is opened by the control element 26 according to the flow rate of the fuel gas, so as to automatically control the fuel distribution of the main combustion stage and the pre-combustion stage thereof, thereby being beneficial to controlling the temperature in the combustion chamber 15 and reducing the emission pollution.
With continued reference to FIG. 4, an embodiment of the present invention also provides a gas turbine including the fuel adaptive distribution apparatus of any one of the above.
In the above embodiment, the control element 26 is arranged in the first duct 23, and the second duct 22 is opened by the control element 26 according to the flow rate of the fuel gas, so as to realize automatic control of the fuel distribution of the main combustion stage and the pre-combustion stage thereof, which is beneficial to control of the temperature in the combustion chamber 15 and reduction of emission pollution.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. A fuel adaptive dispensing device, comprising: the device comprises a first pipeline and a second pipeline communicated with the first pipeline, wherein one end of the first pipeline is a gas inlet, the other end of the first pipeline is used for being connected with a precombustion stage fuel inlet of a gas turbine, and the second pipeline is used for being connected with a main combustion stage fuel inlet of the gas turbine; wherein, the liquid crystal display device comprises a liquid crystal display device,
an annular shoulder is arranged in the first pipeline, a control element is slidably arranged in the first pipeline, a fuel hole which is communicated with the fuel gas inlet and the precombustion stage fuel inlet is formed in the control element, and the diameter of the fuel hole is smaller than the inner diameter of the first pipeline; a compression spring is arranged between the annular shoulder and the control element; when the compression spring is in a free state, the control element seals the communication part of the first pipeline and the second pipeline, and after the compression spring is compressed for a set distance, the first pipeline is communicated with the second pipeline;
the first pipeline is a stepped pipeline, and the control element and the annular shoulder are both positioned in a pipeline with a larger diameter in the first pipeline;
the control element is a cylindrical structure with one end open, the fuel hole is formed in one closed end of the cylindrical structure, a through hole is formed in the side wall of the cylindrical structure, when the compression spring is in a free state, the through hole is blocked by the inner wall of the first pipeline, and when the compression spring is compressed for a set distance, the through hole is communicated with the second pipeline.
2. The fuel-adaptive dispensing device of claim 1 wherein said compression spring portion is inserted into said tubular structure and bears against a closed end of said tubular structure.
3. The fuel-adaptive dispensing device of claim 1, wherein the second conduit is an L-shaped bent conduit.
4. A fuel-adaptive dispensing device according to any one of claims 1 to 3, wherein the fuel orifice is coaxially disposed with the orifice between the annular shoulder.
5. The fuel-adaptive dispensing device of claim 4 wherein the distance from the annular shoulder to where the second conduit communicates with the first conduit is greater than the length of the control element.
6. The fuel-adaptive dispensing device of claim 4 wherein the first conduit is of unitary construction with the annular shoulder.
7. A gas turbine comprising a fuel-adaptive distribution device according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710381276.2A CN107120194B (en) | 2017-05-25 | 2017-05-25 | Fuel self-adaptive distribution device and gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710381276.2A CN107120194B (en) | 2017-05-25 | 2017-05-25 | Fuel self-adaptive distribution device and gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107120194A CN107120194A (en) | 2017-09-01 |
| CN107120194B true CN107120194B (en) | 2023-08-18 |
Family
ID=59728950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710381276.2A Active CN107120194B (en) | 2017-05-25 | 2017-05-25 | Fuel self-adaptive distribution device and gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107120194B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110065638B (en) * | 2018-01-22 | 2021-03-05 | 中国航发商用航空发动机有限责任公司 | Air-entraining anti-icing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202176756U (en) * | 2011-06-28 | 2012-03-28 | 上海梅山钢铁股份有限公司 | Self-operated type pressure-range automatic switching valve |
| CN103161631A (en) * | 2011-12-12 | 2013-06-19 | 中航商用航空发动机有限责任公司 | Fuel oil distributor used in motor |
| TWM495890U (en) * | 2014-09-25 | 2015-02-21 | Qiu-Feng Liu | Automatic pressure relief device of water filter |
| CN105370919A (en) * | 2015-12-11 | 2016-03-02 | 吴红梅 | Column-type gas recognition device |
| CN205315184U (en) * | 2016-01-21 | 2016-06-15 | 中航商用航空发动机有限责任公司 | A fuel control device and engine for two oil circuit swirl injector |
| CN106439129A (en) * | 2016-12-20 | 2017-02-22 | 湖南机油泵股份有限公司 | Anti-seizing low-pressure protection pressure-limiting valve and engine oil pump |
| CN207004655U (en) * | 2017-05-25 | 2018-02-13 | 上海泛智能源装备有限公司 | A kind of fuel self-adjusted block device and gas furnace turbine |
-
2017
- 2017-05-25 CN CN201710381276.2A patent/CN107120194B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202176756U (en) * | 2011-06-28 | 2012-03-28 | 上海梅山钢铁股份有限公司 | Self-operated type pressure-range automatic switching valve |
| CN103161631A (en) * | 2011-12-12 | 2013-06-19 | 中航商用航空发动机有限责任公司 | Fuel oil distributor used in motor |
| TWM495890U (en) * | 2014-09-25 | 2015-02-21 | Qiu-Feng Liu | Automatic pressure relief device of water filter |
| CN105370919A (en) * | 2015-12-11 | 2016-03-02 | 吴红梅 | Column-type gas recognition device |
| CN205315184U (en) * | 2016-01-21 | 2016-06-15 | 中航商用航空发动机有限责任公司 | A fuel control device and engine for two oil circuit swirl injector |
| CN106439129A (en) * | 2016-12-20 | 2017-02-22 | 湖南机油泵股份有限公司 | Anti-seizing low-pressure protection pressure-limiting valve and engine oil pump |
| CN207004655U (en) * | 2017-05-25 | 2018-02-13 | 上海泛智能源装备有限公司 | A kind of fuel self-adjusted block device and gas furnace turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107120194A (en) | 2017-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1243382B1 (en) | Combustion chamber system | |
| WO2007140148A3 (en) | Exhaust gas recirculator mixer | |
| SG163466A1 (en) | Venturi cooling system | |
| EP1416226A3 (en) | Acoustic impedance-matched fuel nozzle device and tunable fuel injection resonator assembly | |
| EP1980754A3 (en) | Compressor and compressor housing | |
| CN107120194B (en) | Fuel self-adaptive distribution device and gas turbine | |
| EP1321715A3 (en) | Improved combination of a premixing chamber and a combustion chamber, with low emission of pollutants, for gas turbines running on liquid and/or gas fuel | |
| US4027635A (en) | Flow rate control mechanism for use in exhaust gas re-circulating system | |
| US20020134069A1 (en) | Combustion chamber system | |
| CN206190993U (en) | Off -load formula pressure reducer | |
| US10823400B2 (en) | Multi-cavity gas and air mixing device | |
| DK2181247T3 (en) | Hidden opening | |
| CN206846308U (en) | A kind of external differential apparatus for making gas ordorous | |
| CN207004655U (en) | A kind of fuel self-adjusted block device and gas furnace turbine | |
| CN101135608A (en) | Single oilchannel fuel oil engines heat test oil return feeding system and method | |
| CN108686531B (en) | Simplified shell-and-tube fluid mixer | |
| CN106404337B (en) | Constant volume variable air flow fields corrosion chamber and its working method | |
| CN217328553U (en) | Desktop fixed type gas ball valve | |
| CN204164454U (en) | Gas pressure-reducing surge pipe | |
| CN212583903U (en) | Noise reduction device and atomizer compressor | |
| CN217327518U (en) | Air inlet device and combustion system | |
| CN211232410U (en) | Pressure regulating gas transmission device for industrial gas | |
| TW201727084A (en) | Vacuum retention type multi-stage vacuum generator Characterized in that control piston is displaced by an internal passage in conjunction with vacuum suction force, achieving internal vacuum effect to stop the continuous input gas of a pressure source while maintaining the vacuum maximum degree | |
| US10753606B2 (en) | Gas burner | |
| TWM523002U (en) | Vacuum retention type multi-stage vacuum generator |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 201306 101 new office building, A, 7 new industrial park, Shanghai, Pudong New Area, 600 new Yuan South Road, Pudong New Area. Applicant after: ENN ENERGY POWER TECHNOLOGY (SHANGHAI) Co.,Ltd. Address before: 201406 228 yongyang Road, Yang Wang Industrial Park, South Bridge Town, Fengxian District, Shanghai Applicant before: SHANGHAI FANZHI ENERGY EQUIPMENT CO.,LTD. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |