CN211737258U - Power turbine power generation device - Google Patents
Power turbine power generation device Download PDFInfo
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- CN211737258U CN211737258U CN201922215510.1U CN201922215510U CN211737258U CN 211737258 U CN211737258 U CN 211737258U CN 201922215510 U CN201922215510 U CN 201922215510U CN 211737258 U CN211737258 U CN 211737258U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The utility model discloses a power turbine power generation facility, power turbine power generation facility is used for using the exhaust of engine to generate electricity, power turbine power generation facility includes power turbine, the flywheel, generator and adjusting part, power turbine is used for receiving the exhaust of engine, the exhaust can drive power turbine and rotate, power turbine can drive the flywheel through rotating and rotate, the flywheel can drive the generator electricity generation through rotating, the exhaust of engine reaches power turbine via adjusting part, adjusting part can adjust the carminative air displacement who gets into power turbine. The utility model discloses a power turbine power generation facility can realize the smooth output of engine waste heat electricity generation, can effectively adjust the change of the frequency of electricity generation that engine load operating mode changes and arouse, voltage, and the electric energy that the output satisfies boats and ships electric wire netting electricity generation quality requirement guarantees the reliability of generator operation in the net.
Description
Technical Field
The utility model belongs to the technical field of marine diesel engine exhaust-gas aftertreatment is used, specifically relate to a power turbine power generation facility.
Background
The marine diesel engine is used as a marine main engine, and is a marine fuel consumption source and a marine power supply source. The related technology of diesel engine waste heat power generation is one of key technologies for reducing the EEDI index (new ship energy efficiency design index) of a ship and realizing energy conservation and emission reduction. The existing technologies applied to the waste heat recovery power generation of the marine main engine mainly comprise a power turbine power generation technology, a steam Rankine cycle power generation technology and the like.
The application of the power turbine power generation technology is mainly based on the high-efficiency requirement of a ship host machine on a low-load working condition area and the improvement of the existing turbocharging technology, and the running mode of bypassing part of turbine front exhaust is adopted to ensure that a turbocharger does not overspeed under the high-load working condition of a ship, so that the waste of part of high-temperature high-pressure exhaust energy is caused. The power turbine generator set fully recovers the pressure energy and the temperature energy of the exhaust gas on the premise of not influencing the operation of the main engine and converts the pressure energy and the temperature energy into high-grade electric energy. However, the working condition of the marine main engine is changed due to the change of sea conditions, and the response speed of the valve control on the inlet pipeline of the power turbine is difficult to ensure that the power turbine stably operates along with the change of the working condition of the marine main engine, and particularly, the stability is difficult to realize when the load is suddenly increased or is thrown off, so that the power generation quality of the power turbine generator set is difficult to meet the requirement of grid connection.
This problem has greatly limited the use of power turbine generators, making it impossible to use power turbine generators on ships alone. At present, a power turbine and a steam turbine in a steam Rankine cycle are jointly operated abroad to ensure the power generation quality through the speed regulation of the steam turbine or ensure the power generation quality through a derating power generation mode.
Therefore, it is desirable to provide a power turbine power plant to at least partially address the above technical problems.
SUMMERY OF THE UTILITY MODEL
In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
In order to solve the above problem at least in part, the utility model discloses a power turbine power generation facility, power turbine power generation facility is used for using the exhaust of engine exhaust to generate electricity, power turbine power generation facility includes:
a power turbine for receiving exhaust gas from the engine, the exhaust gas being capable of driving the power turbine to rotate;
the flywheel is connected with the power turbine, and the power turbine can drive the flywheel to rotate through rotation;
the generator is connected with the flywheel, and the flywheel can drive the generator to generate electricity through rotation; and
an adjustment assembly via which exhaust gas emitted by the engine reaches the power turbine, the adjustment assembly being capable of adjusting an amount of exhaust gas entering the power turbine.
The utility model discloses a power turbine power generation facility can realize the smooth output of engine waste heat electricity generation, has longe-lived, pollution-free, dynamic characteristic advantage such as good, can effectively adjust the change of the power generation frequency that engine load operating mode changes and arouse, voltage, the electric energy that the output satisfies boats and ships electric wire netting electricity generation quality requirement guarantees the generator and in the reliability of net operation, this flexibility that also improves power turbine power generation facility and uses realizes boats and ships energy saving and emission reduction.
Optionally, the generator is connected to the flywheel via a gearbox. In this way, mechanical energy can be smoothly transmitted.
Optionally, the gearbox comprises:
the first gear is coaxial and connected with the flywheel, and the flywheel can drive the first gear to rotate through rotation; and
the second gear is meshed with the first gear, the diameter of the second gear is larger than that of the first gear, the second gear is connected with the generator, and the second gear can drive the generator to generate electricity through rotation.
Therefore, unstable operation of the generator caused by sudden load increase or load shedding of the engine can be avoided.
Optionally, the gearbox further comprises a housing, and the flywheel and the gearbox are both arranged inside the housing. This protects the flywheel.
Optionally, the regulating assembly comprises a control unit capable of controlling the starting valve and the bypass valve, wherein the starting valve is arranged between the exhaust end of the engine and the power turbine, and the bypass valve is arranged between the starting valve and the atmosphere. Thereby, the amount of exhaust gas of the engine entering the power turbine can be flexibly controlled.
Alternatively, the control unit controls the starting valve to be opened to a predetermined opening degree and the control unit controls the bypass valve to be closed when an operating load of the engine is equal to a design load matching the power turbine. Whereby the efficiency of the power turbine can be ensured.
Optionally, the regulating assembly further comprises a regulating valve controllable by the control unit, the regulating valve being connected in parallel with the activation valve. Whereby the amount of exhaust gas entering the power turbine can be further adjusted.
Alternatively, when the operating load of the engine is lower than the design load, the control unit controls the regulating valve such that the opening degree of the regulating valve becomes larger; the control unit controls the regulating valve such that an opening degree of the regulating valve is decreased when the operating load of the engine is higher than the design load. Whereby the amount of exhaust gas entering the power turbine can be flexibly adjusted.
Optionally, the regulating valve is configured as a trim valve. This allows for precise regulation of the amount of exhaust gas entering the power turbine.
Optionally, the power turbine is arranged in parallel with a turbocharger between an exhaust end of the engine and the atmosphere, and a part of exhaust gas discharged by the engine enters the turbocharger and a part of exhaust gas enters the power turbine. Waste of energy carried by the engine exhaust can thereby be avoided.
Drawings
The following drawings of the embodiments of the present invention are provided as a part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,
FIG. 1 is a schematic diagram of a power turbine power plant according to a preferred embodiment of the present invention;
FIG. 2 is a front view of a power turbine power plant according to a preferred embodiment of the present invention; and
FIG. 3 is a left side view of the power turbine generator shown in FIG. 2.
Description of reference numerals:
1: the power turbine 2: flywheel wheel
3: the gear case 4: generator
5: starting a valve 6: bypass valve
7: and (4) regulating valve 8: turbocharger
9: start valve operating end 10: first gear
11: second gear
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art.
The utility model provides a take power turbine power generation facility of energy storage speed governing function, power turbine power generation facility can be used for using engine exhaust's exhaust to generate electricity. The engine can be a marine diesel engine, and the marine diesel engine generates smoke in the working process, and the smoke carries a large amount of energy.
Fig. 1 exemplarily shows an operation principle of a power turbine power generation apparatus according to a preferred embodiment of the present invention. As can be seen from fig. 1, the power turbine power generation device is arranged at the exhaust end of the engine together with the turbocharger 8, so that the energy of the exhaust gas used by the power turbine power generation device and the turbocharger 8 is reasonably distributed, and the power generation quality under variable working conditions is ensured. The turbocharger 8 uses most of the exhaust gas discharged from the engine to promote the intake of the engine. Specifically, the turbocharger 8 includes a turbine and a supercharger coaxially disposed, the turbine is rotated by exhaust gas discharged from the engine, and the turbine drives the supercharger to operate so as to increase the intake air amount of the engine, which is well known to those skilled in the art and will not be described herein again.
The amount of exhaust gas discharged from the engine may be excessive, and in order to ensure that the turbocharger 8 does not overspeed, the engine exhaust gas may be supplied to a power turbine generator that can generate electricity using the exhaust gas of the engine.
The power turbine power plant includes a power turbine 1 and a generator 4. The power turbine 1 is used for receiving exhaust gas discharged by an engine, the power turbine 1 and the turbocharger 8 are arranged between the exhaust end of the engine and the atmosphere in parallel, a part of the exhaust gas discharged by the engine enters the turbocharger 8, a part of the exhaust gas enters the power turbine 1, and the exhaust gas discharged from the power turbine 1 can be mixed with the exhaust gas at the outlet of the turbocharger 8 and then is discharged out of the system. Waste of energy carried by the engine exhaust can thereby be avoided.
In operation of the power turbine power plant, exhaust gas from the engine (i.e., corresponding to the turbine intake air in fig. 2 and 3) can be supplied to the power turbine 1, which can rotate the power turbine 1, and the energy of the exhaust gas is converted into mechanical energy. Further, the power turbine 1 can rotate to drive the generator 4 connected with the power turbine 1 to rotate so as to generate electricity, and the mechanical energy is further converted into electric energy, so that the power turbine power generation device can realize the function of generating electricity by using the exhaust gas of the engine.
And the engine may not ensure uniform exhaust, in order to ensure that the power turbine 1 operates uniformly and thus the generator 4 can generate power stably, the power turbine power generation device further comprises a flywheel 2, and the flywheel 2 is arranged between the generator 4 and the power turbine 1. The output of the power turbine 1 may be connected to the flywheel 2, such that the power turbine 1 is able to rotate the flywheel 2. The flywheel 2 has a large moment of inertia. When the rotation speed of the power turbine 1 increases, the kinetic energy of the flywheel 2 increases to store the energy. When the rotating speed of the power turbine 1 is reduced, the kinetic energy of the flywheel 2 is reduced, and the energy is released. Preferably, as shown in fig. 2 and 3, the power turbine 1 may be coaxially connected with the flywheel 2, thereby ensuring stability of operation. Of course, the power turbine 1 and the flywheel 2 can also be connected through a coupling, so that the power turbine 1 can be ensured to effectively drive the flywheel 2 to operate.
The flywheel 2 is connected with the generator 4, the flywheel 2 can drive the generator 4 connected with the flywheel 2 to rotate through rotation so as to generate electricity, and mechanical energy is further converted into electric energy. Therefore, when the working condition of the engine changes due to the change of sea conditions, the flywheel 2 can realize two functions of speed control and energy storage, and reduce the speed fluctuation of the power turbine 1 in the operation process, thereby ensuring the stable operation of the generator 4 due to the change of the working condition when the engine exhausts.
In order to improve the efficiency of the power generation, the generator 4 may also be connected to the flywheel 2 through the gear box 3, thereby smoothly transmitting mechanical energy. Specifically, as shown in fig. 1, the gear box 3 may include a first gear 10 and a second gear 11, and the first gear 10 may be connected to the flywheel 2. Preferably, the flywheel 2 and the first gear 10 may be coaxially connected, and the flywheel 2 can drive the first gear 10 to rotate through rotation, so as to ensure the stability of the respective operations of the flywheel 2 and the first gear 10. Of course, the flywheel 2 and the first gear 10 can also be connected by a coupling, so that the flywheel 2 can effectively drive the first gear 10 to operate.
The second gear 11 can be meshed with the first gear 10, the diameter of the second gear 11 is larger than that of the first gear 10, and the second gear 11 is connected with the generator 4, so that the second gear 11 can drive the generator 4 connected with the second gear 11 to rotate to generate electricity through rotation, and mechanical energy is converted into electric energy. This can prevent the generator 4 from being unstable in operation due to sudden load increase or load shedding of the engine. The second gear 11 and the generator 4 can be connected into a whole through the coupler in a centering way, and the second gear 11 can be ensured to effectively drive the generator 4 to operate, so that the generator 4 can be ensured to effectively generate electricity.
Further, in an embodiment not shown, in order to reduce the possibility of damage to the flywheel 2, the power turbine power plant further comprises a housing, and both the flywheel 2 and the gearbox 3 may be disposed inside the housing such that the housing protects the gearbox 3 and the flywheel 2. Alternatively, in order to reduce the resonance generated by the power turbine 1, the flywheel 2, the gearbox 3 and the generator 4 during operation, the power turbine 1, the flywheel 2, the gearbox 3 and the generator 4 may be integrally mounted to a common base.
The power turbine power plant also comprises an adjustment assembly via which the exhaust gases discharged by the engine reach the power turbine 1, the adjustment assembly being used to adjust the exhaust gas quantity of the exhaust gases entering the power turbine 1.
Preferably, the regulating assembly comprises a starting valve 5, a bypass valve 6 and a control unit for controlling the starting valve 5 and the bypass valve 6. Wherein the starting valve 5 is arranged between the exhaust end of the engine and the power turbine 1 and the bypass valve 6 is arranged between the starting valve 5 and the atmosphere. Thereby, the amount of exhaust gas of the engine entering the power turbine 1 can be flexibly controlled.
Typically, the engine is set at a design load, and when the engine is operating at the design load, the exhaust gas emitted by the engine just meets the requirements for proper operation of the turbocharger 8 and the power turbine 1. When the operating load of the engine is equal to the design load matching the power turbine 1, the control unit can control the starter valve 5 to be opened step by step to a predetermined opening degree, for example, the opening degree of the starter valve 5 can be adjusted by operating the starter valve operating end 9 shown in fig. 3. The control unit is also able to control the bypass valve 6 to close gradually. In this way, the exhaust gas of the engine can be entirely let into the power turbine 1 through the starting valve 5 without being released to the atmosphere through the bypass valve 6, and thus is not wasted.
The control unit can control the starting valve 5 to adjust the opening degree of the starting valve 5, so that the rotating speeds of the power turbine 1 and the flywheel 2 are controlled until the grid-connected rotating speed is met, and the energy stored in the flywheel 2 in the running process can be beneficial to adjusting the rotating speed.
Of course, when the operating load of the engine is significantly higher than the design load, while the control unit controls the starting valve 5 to adjust the opening degree of the starting valve 5, it may also control to open the bypass valve 6 accordingly, so that the surplus exhaust gas is discharged directly to the outside atmosphere through the bypass valve 6, that is, the exhaust gas discharged to the atmosphere through the bypass valve 6 does not pass through the power turbine 1. In this way, the bypass valve 6 can bypass excess gas to the atmosphere when the gas entering the power turbine 1 exceeds the amount required by the load.
In order to further accurately control the rotational speed of the power turbine 1, the regulating assembly further comprises a regulating valve 7, which regulating valve 7 can be controlled by the control unit. The governor valve 7 and the starting valve 5 are arranged in parallel between the exhaust end of the engine and the power turbine 1. Likewise, when the operating load of the engine is significantly higher than the design load, while the control unit controls the regulating valve 7 to regulate the opening degree of the regulating valve 7, it may also control to open the bypass valve 6 accordingly, so that the surplus exhaust gas flows to the bypass valve 6 via the regulating valve 7 and is discharged to the outside atmosphere.
The trigger valve 5 can be designed as a coarse control valve and the control valve 7 as a fine control valve. The regulating valve 7 may be arranged and shaped for delivering a small amount (compared to the starting valve 5) or a fine-tuned amount of exhaust gas to the power turbine 1, thereby flexibly regulating the amount of exhaust gas entering the engine of the power turbine 1. When the control unit controls the starting valve 5 to open to a predetermined opening degree, the control unit may control the regulating valve 7 to open to more accurately control the amount of exhaust gas entering the power turbine 1.
The control unit can control the regulating valve 7 so that the opening degree of the regulating valve 7 becomes large when the power turbine generator is in the on-grid state, the distributed load increases, and the operating load of the engine is lower than the design load. Thus, the amount of exhaust gas entering the power turbine 1 can be increased, the rotational speed of the power turbine 1 can be increased, and the power generation efficiency can be improved.
Further, even if the rotating speed of the power turbine 1 drops due to the increase of the load, because the flywheel 2 is arranged between the power turbine 1 and the generator 4, the rotating speed drop is far less than the condition without the flywheel 2, the flywheel 2 can release energy, so that effective response time is provided for adjusting the opening degree of each adjusting valve, and especially for sudden-heating working conditions, the effect of the flywheel 2 is more obvious.
When the power turbine power generation device stably operates, a user sends a load reduction signal, and the operating load of the engine is higher than the design load, the control unit can control the regulating valve 7 to reduce the opening of the regulating valve 7. In this way, the amount of exhaust gas entering the power turbine 1 can be reduced, and overspeed of the power turbine 1 can be avoided.
Because the load reduces, the rotational speed of power turbine 1 rises, but because be provided with flywheel 2 between power turbine 1 and the generator 4, flywheel 2 can the energy storage, greatly reduced the overspeed amplitude of rotational speed, and each governing valve is controlled to combine the control unit again to guarantee the safe and stable operation of power turbine 1 and generator 4, especially to the suddenly unloading operating mode, the effect of flywheel 2 effect will be more obvious.
Through the adjusting function of the adjusting assembly, even if the displacement of the engine is not uniform, the stable operation of the power turbine generating set is not influenced, and under the condition that the displacement of the engine is not uniform, the generator 4 of the power turbine generating set can generate power stably, so that the power generation quality is effectively ensured.
The utility model discloses a power turbine power generation facility, can solve the technical difficulty that exists at the in-process according to power turbine generating set matching engine now, the speed governing of 2 energy storage combination power turbine 1's entrance valves of flywheel, play the energy storage effect under the transient state change operating mode, with improve the speed governing performance, solve exhaust energy distribution, electricity generation quality control, the problem of transmission connection, the speed governing of generator 4 satisfies boats and ships electricity generation speed governing requirement, can improve power turbine power generation facility and engine exhaust system's matching adaptability greatly, guarantee the engine different load, power turbine power generation facility's electricity generation quality under variable load and the undulant condition of exhaust.
The utility model discloses a power turbine power generation facility can realize the smooth output of engine waste heat electricity generation, has longe-lived, pollution-free, dynamic characteristic advantage such as good, can effectively adjust the change of the power generation frequency that engine load operating mode changes and arouse, voltage, the electric energy that the output satisfies boats and ships electric wire netting electricity generation quality requirement guarantees generator 4 in the reliability of net operation, this flexibility that also improves power turbine power generation facility and uses realizes boats and ships energy saving and emission reduction.
Of course, the utility model discloses a power turbine power generation facility still is used for retrieving the waste heat of other fields high temperature high pressure flue gas, and can be used for the electricity generation with the energy that the flue gas carried, can adapt to the change of heat source.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. It will be appreciated by those skilled in the art that many more modifications and variations are possible in light of the above teaching and are intended to be included within the scope of the invention.
Claims (10)
1. A power turbine power plant for generating electricity using exhaust gas discharged from an engine, comprising:
a power turbine for receiving exhaust gas from the engine, the exhaust gas being capable of driving the power turbine to rotate;
the flywheel is connected with the power turbine, and the power turbine can drive the flywheel to rotate through rotation;
the generator is connected with the flywheel, and the flywheel can drive the generator to generate electricity through rotation; and
an adjustment assembly via which exhaust gas emitted by the engine reaches the power turbine, the adjustment assembly being capable of adjusting an amount of exhaust gas entering the power turbine.
2. The power turbine generator of claim 1, wherein the generator is coupled to the flywheel through a gearbox.
3. The power turbine power plant of claim 2, wherein the gearbox comprises:
the first gear is coaxial and connected with the flywheel, and the flywheel can drive the first gear to rotate through rotation; and
the second gear is meshed with the first gear, the diameter of the second gear is larger than that of the first gear, the second gear is connected with the generator, and the second gear can drive the generator to generate electricity through rotation.
4. The power turbine generator of claim 2, further comprising a housing, the flywheel and the gearbox both being disposed inside the housing.
5. The power turbine generator of claim 1, wherein the modulation assembly includes a control unit, a trigger valve and a bypass valve, the control unit being capable of controlling the trigger valve and the bypass valve, wherein the trigger valve is disposed between the exhaust of the engine and the power turbine, and the bypass valve is disposed between the trigger valve and the atmosphere.
6. The power turbine generator according to claim 5, wherein the control unit controls the trigger valve to be opened to a predetermined opening degree and the control unit controls the bypass valve to be closed when an operating load of the engine is equal to a design load matching the power turbine.
7. The power turbine generator of claim 6, wherein the regulating assembly further comprises a regulating valve controllable by the control unit, the regulating valve being connected in parallel with the activation valve.
8. The power turbine power plant of claim 7,
when the operating load of the engine is lower than the design load, the control unit controls the regulating valve such that the opening degree of the regulating valve becomes larger;
the control unit controls the regulating valve such that an opening degree of the regulating valve is decreased when the operating load of the engine is higher than the design load.
9. The power turbine generator of claim 7, wherein said regulator valve is configured as a trim valve.
10. The power turbine generator of claim 1, wherein the power turbine is adapted to be disposed in parallel with a turbocharger between an exhaust end of the engine and the atmosphere, and wherein a portion of exhaust gas emitted by the engine enters the turbocharger and a portion enters the power turbine.
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| CN201922215510.1U CN211737258U (en) | 2019-12-05 | 2019-12-05 | Power turbine power generation device |
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| CN201922215510.1U CN211737258U (en) | 2019-12-05 | 2019-12-05 | Power turbine power generation device |
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| CN211737258U true CN211737258U (en) | 2020-10-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922707A (en) * | 2019-12-05 | 2021-06-08 | 中国船舶重工集团公司第七一一研究所 | Power turbine power generation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922707A (en) * | 2019-12-05 | 2021-06-08 | 中国船舶重工集团公司第七一一研究所 | Power turbine power generation device |
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Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Patentee after: SHANGHAI QIYAO HEAVY INDUSTRY CO.,LTD. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute Patentee before: SHANGHAI QIYAO HEAVY INDUSTRY CO.,LTD. |
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