CN211950640U - Balance type exhaust branch pipe assembly for single cylinder diesel engine - Google Patents
Balance type exhaust branch pipe assembly for single cylinder diesel engine Download PDFInfo
- Publication number
- CN211950640U CN211950640U CN202020161325.9U CN202020161325U CN211950640U CN 211950640 U CN211950640 U CN 211950640U CN 202020161325 U CN202020161325 U CN 202020161325U CN 211950640 U CN211950640 U CN 211950640U
- Authority
- CN
- China
- Prior art keywords
- pipe
- main
- exhaust
- diesel engine
- branch pipe
- 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.)
- Withdrawn - After Issue
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 14
- 208000013201 Stress fracture Diseases 0.000 abstract description 5
- 208000010392 Bone Fractures Diseases 0.000 abstract description 2
- 206010017076 Fracture Diseases 0.000 abstract description 2
- 206010016256 fatigue Diseases 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 238000012795 verification Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model provides a balanced exhaust branch pipe assembly for a single cylinder diesel, which comprises an exhaust manifold, a main corrugated pipe, an output pipe, an auxiliary corrugated pipe and a blind cover, wherein the exhaust manifold comprises a pipe body, a first output end, a second output end and an inlet flange end; the pipe body comprises a branch pipe and a main pipe, wherein one end of the branch pipe is an inlet flange end, and the other end of the branch pipe is communicated with the main pipe; the first output end is fixedly connected with the first end of the main corrugated pipe, and the second end of the main corrugated pipe is fixedly connected with the inlet end of the output pipe; the second output end is fixedly connected with one end of the secondary corrugated pipe, and the other end of the secondary corrugated pipe is fixedly connected with the blind cover. The utility model can compensate the transverse and axial displacement of the whole exhaust pipe system caused by vibration and thermal load; the overturning moment generated by exhaust thrust at the joint of the inlet flange of the exhaust branch pipe section and the cylinder cover is eliminated, the possibility of early fatigue fracture and fracture failure at the inlet flange of the exhaust branch pipe caused by plastic deformation of the single corrugated pipe is overcome fundamentally, and the support structure of the pipe system is greatly simplified.
Description
Technical Field
The utility model relates to a diesel engine exhaust system technical field specifically, relates to a balanced type exhaust branch subassembly for single cylinder diesel.
Background
In the development process of the high-power marine diesel engine, a single-cylinder analog complete machine design technology is generally applied to save development cost, the pre-research design of a single power unit of the complete machine is developed, and a foundation is laid for directly entering the complete machine development. The single-cylinder machine bench test can simulate the working conditions of the whole machine to the maximum extent, and can carry out performance optimization and core part and single-cylinder machine reliability verification. The single-cylinder engine bench exhaust system simulates parameters such as exhaust temperature, pressure, flow rate and the like in the whole single-cylinder supercharging system and is a key component for simulating the single-cylinder performance and reliability verification of the whole engine, so that the reliability of the exhaust system directly influences the test plans such as the single-cylinder performance and reliability verification.
The prior single-cylinder exhaust pipeline rack arrangement generally arranges a single corrugated pipe structure in an exhaust pipeline along an axial straight pipe section to compensate the transverse and axial thermal load displacement and vibration displacement of a conventional exhaust branch pipe.
The transverse branch pipe section of the exhaust branch pipe is perpendicular to the axial straight pipe section of the pipe system, the thermal displacement generated by the branch pipe section is called transverse displacement, the thermal displacement generated by the axial straight pipe section in the pipe system is called axial displacement, the transverse displacement and the axial displacement of the whole exhaust pipe system must be compensated, otherwise, huge thermal stress is generated on a fixed supporting part of the exhaust pipe. For a single cylinder engine, the length of an exhaust branch pipe section is a main transverse thermal displacement source, the single corrugated pipe cannot completely compensate the requirements of transverse displacement generated by the branch pipe section and vibration of the single cylinder engine due to structural limitation, excessive bending plastic deformation of the single corrugated pipe is easily caused in actual work, the wave spacing is seriously uneven and even attached, early fatigue fracture is easily caused by waves, and reliable and stable test of a test bench cannot be ensured; more seriously, the single corrugated pipe can convert the gas thrust generated by the exhaust of the pipe system into external force, and the flanges at the two ends of the single corrugated pipe directly act on the fixed supports at the two ends of the pipe system to become the main source of the fatigue failure load of the fixed supports. Therefore, the fixed support becomes the weakest part of the whole system, and once the fixed support is damaged by fatigue, the flange of the branch pipe section of the exhaust branch pipe is instantly broken under the action of gas thrust generated by the corrugated pipe.
In view of the above fatigue failure easily occurring in the exhaust system of the traditional single cylinder engine, the performance of the single cylinder engine, the part check and the implementation of the reliability verification plan are seriously affected, and meanwhile, the fatigue failure of high-temperature parts is checked along with the engine, and the personal safety of testers is seriously threatened. It would be desirable to provide an exhaust pipe assembly that inherently overcomes the potential for premature fatigue failure of unitary bellows due to plastic deformation and failure at the inlet flange of the exhaust branch pipe.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a balanced type exhaust branch subassembly for single cylinder diesel.
A balanced exhaust branch pipe assembly for a single-cylinder diesel engine comprises an exhaust manifold, a main corrugated pipe, an output pipe, a secondary corrugated pipe and a blind cover, wherein the exhaust manifold comprises a pipe body, a first output end, a second output end and an inlet flange end; the pipe body comprises a branch pipe and a main pipe which are communicated, one end of the branch pipe is an inlet flange end, the other end of the branch pipe is communicated with the main pipe, and the main pipe, the first output end and the second output end are coaxially arranged;
the first output end is fixedly connected with the first end of the main corrugated pipe, and the second end of the main corrugated pipe is fixedly connected with the inlet end of the output pipe;
the second output end is fixedly connected with one end of the auxiliary corrugated pipe, and the other end of the auxiliary corrugated pipe is fixedly connected with the blind cover.
Further, the first output end and the second output end are both hollow round tables with diameters larger than the diameter of the main pipe, one end of the main pipe extends to the main corrugated pipe to serve as a first guide cylinder, and the other end of the main pipe extends to the auxiliary corrugated pipe to serve as a second guide cylinder.
Furthermore, the first guide cylinder extends to the joint of the main corrugated pipe and the output pipe, and the second guide cylinder extends to the joint of the auxiliary corrugated pipe and the blind cover.
Furthermore, a first fixing plate extending outwards in the radial direction is arranged at a position close to the inlet end of the output pipe, the blind cover is divided into a connecting end and a blind plate which are integrally formed, and the connecting end is fixedly connected with the secondary corrugated pipe; the blind plate is fixed with the first fixing plate through four pull rods which are arranged in parallel up and down.
Further, the blind plate is fixed with the first fixing plate through a pull rod through a fastener, the fastener comprises a fastening nut and a limiting nut, the two ends of the pull rod penetrate through the blind plate and the first fixing plate respectively and then are fixed through the limiting nut and the fastening nut, a spherical gasket is arranged between the fastening nut and the blind plate, and a spherical gasket is arranged between the fastening nut and the first fixing plate.
Further, after the exhaust branch pipe assembly is in place in the exhaust pipe system, the limiting nut is retreated for a certain distance and locked.
Further, the branch pipe is a bent pipe, a reinforcing plate is arranged on the inner bending side, and the reinforcing plate extends to the joint of the branch pipe and the main pipe.
Further, the length of the primary corrugated pipe is greater than that of the secondary corrugated pipe.
Furthermore, the outlet end of the output pipe is connected with an output end flange after diameter reduction.
Compared with the prior art, the utility model discloses following beneficial effect has: the balance type exhaust branch pipe component of the utility model can sufficiently compensate the transverse and axial displacement of the whole exhaust pipe system caused by vibration and thermal load on the premise of ensuring the exhaust performance of a single cylinder of a multi-cylinder diesel engine; the alternating gas thrust of the exhaust pipe system can be converted into the internal force of the exhaust pipe system, the action of the alternating exhaust thrust on the fixed support of the exhaust pipe system is eliminated, the overturning moment possibly generated by the exhaust thrust at the joint of the inlet flange of the exhaust branch pipe section and the cylinder cover is eliminated, the possibility of early fatigue fracture of the single corrugated pipe and the possibility of fracture failure at the inlet flange of the exhaust branch pipe due to plastic deformation are overcome fundamentally, the single corrugated pipe and the exhaust branch pipe of the traditional structure of the exhaust system are designed into a balanced exhaust branch pipe structure form, the fatigue fracture failure at the inlet flange end, the fixed support and the like of the exhaust branch pipe of the exhaust system is fundamentally solved, the two defects in the existing arrangement method are completely overcome, and the support structure of the pipe system is greatly simplified.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an exhaust manifold according to the present invention;
FIG. 3 is a schematic structural diagram of the output tube of the present invention;
FIG. 4 is a schematic structural view of the blind cover of the present invention;
fig. 5 is a cross-sectional view of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
The utility model discloses be applied to in the multi-cylinder diesel engine development especially V type multi-cylinder diesel engine development process, need the field that single cylinder engine bench test verified, the utility model discloses the scheme mainly used this single cylinder engine bench exhaust pipe arrange.
As shown in fig. 1 to 5, a balanced exhaust branch pipe assembly for a single cylinder diesel engine includes an exhaust manifold 1, a main bellows 2, an output pipe 3, a secondary bellows 4, and a blind head 5, and preferably, the length of the main bellows 2 is greater than that of the secondary bellows 4.
The exhaust manifold 1 comprises a pipe body 11, a first output end 12, a second output end 13 and an inlet flange end 14; the pipe body 11 comprises a branch pipe 111 and a main pipe 112 which are communicated, one end of the branch pipe 111 is an inlet flange end 14, the other end of the branch pipe is communicated with the main pipe 112, and the main pipe 112, the first output end 12 and the second output end 13 are coaxially arranged; the branch pipe 111 is a bent pipe, a reinforcing plate 115 is arranged at the inner bent side, and the reinforcing plate 115 extends to the joint of the branch pipe 111 and the main pipe 112;
the first output end 12 is fixedly connected with the first end 21 of the main corrugated pipe 2, and the second end 22 of the main corrugated pipe 2 is fixedly connected with the inlet end of the output pipe 3;
the second output end 13 is fixedly connected with one end of the secondary corrugated pipe 4, and the other end of the secondary corrugated pipe 4 is fixedly connected with the blind cap 5.
The first output end 12 and the second output end 13 are both hollow round tables with diameters larger than that of the main pipe 112, one end of the main pipe 112 extends to the main corrugated pipe 2 to serve as a first guide cylinder 113, the first guide cylinder 113 extends to the joint of the main corrugated pipe 2 and the output pipe 3, the other end of the main pipe 112 extends to the auxiliary corrugated pipe 4 to serve as a second guide cylinder 114, and the second guide cylinder 114 extends to the joint of the auxiliary corrugated pipe 4 and the blind cover 5.
The exhaust manifold 1 meets various flow channel parameters required by diesel engine exhaust design, and transverse and axial thermal displacements generated by exhaust gas heat load of an exhaust manifold section are respectively compensated by jointly compressing and bending the main corrugated pipe 2 and the auxiliary corrugated pipe 4 according to design compensation quantity. In actual work, excessive bending plastic deformation, serious uneven wave distance and even bonding of the corrugated pipe and early fatigue fracture of the wave caused by insufficient compensation amount can be avoided.
The outlet end of the output pipe 3 is connected with the output end flange 9 after diameter reduction, a first fixing plate 31 extending outwards in the radial direction is arranged at a position close to the inlet end of the output pipe 3, the blind cover 5 is divided into a connecting end 51 and a blind plate 52 which are integrally formed, and the connecting end 51 is fixedly connected with the secondary corrugated pipe 4; adopt the fastener to fix between blind plate 52 and the first fixed plate 31 through four pull rods 8 of parallel arrangement from top to bottom, the fastener includes fastening nut 6 and stop nut 7, and it is fixed through stop nut 7 and fastening nut 6 after blind plate 52 and first fixed plate 31 are passed respectively to the both ends of pull rod 8, between fastening nut 6 and the blind plate 52, all be equipped with spherical gasket between fastening nut 6 and the first fixed plate 31.
The output end 3 and the blind cover 5 are fixed by the pull rod 8 through the fastening nut 6 and the spherical gasket according to the designed fixed length, and the output end 3 and the blind cover 5 are fixed according to the designed length, so that the gas thrust generated by the main corrugated pipe 2 and the auxiliary corrugated pipe 4 is converted into the internal force, the large gas thrust is not generated on the output end flange 9 any more, the overturning moment generated by the corresponding load at the fixed position of the inlet flange end 14 of the branch pipe 111 is eliminated, and the force source of the system only remains the fatigue load of the transverse and axial rebound force of the corrugated pipes to generate a small moment at the fixed support of the inlet flange end 14 of the branch pipe 111. The form of the exhaust branch pipe assembly simultaneously meets the requirement of unloading the axial X and transverse Y thermal expansion displacement of the exhaust pipe system and converts the alternating exhaust thrust transmitted by the single corrugated pipe into internal force, the influences of most mechanical loads at the inlet flange end 14 of the exhaust branch pipe and the pipeline supporting part are eliminated at the source, the fatigue life of the inlet flange end of the exhaust branch pipe and the pipeline support is greatly prolonged, the pipe system supporting structure is simplified, and the fatigue failure fault of the exhaust system is eliminated.
In order to ensure that the balanced exhaust branch pipe structure works according to the designed compensation amount, after the exhaust branch pipe assembly is in place in the exhaust pipe system, the limiting nut 7 is retreated for a certain distance and locked.
Adopt the utility model discloses a balanced type exhaust branch subassembly, the reliable single cylinder engine exhaust system of certain type high-power diesel has accomplished 3000 hours trouble-free verification, is continuing the verification along with the continuous reliability test plan of single cylinder engine at present, has realized no longer carrying on the inspection of following the machine in every 8 hours, greatly reduced testing personnel's work load and the potential safety hazard in the experiment. And the method can be applied to single-cylinder models of in-line multi-cylinder diesel engines, is also applicable to single-cylinder models with inclined multi-cylinder V-shaped diesel engines, and has high practical value.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. A balanced exhaust branch pipe assembly for a single-cylinder diesel engine is characterized by comprising an exhaust manifold (1), a main corrugated pipe (2), an output pipe (3), a secondary corrugated pipe (4) and a blind cover (5), wherein the exhaust manifold (1) comprises a pipe body (11), a first output end (12), a second output end (13) and an inlet flange end (14); the pipe body (11) comprises a branch pipe (111) and a main pipe (112) which are communicated, one end of the branch pipe (111) is an inlet flange end (14), the other end of the branch pipe is communicated with the main pipe (112), and the main pipe (112), the first output end (12) and the second output end (13) are coaxially arranged;
the first output end (12) is fixedly connected with the first end (21) of the main corrugated pipe (2), and the second end (22) of the main corrugated pipe (2) is fixedly connected with the inlet end of the output pipe (3);
the second output end (13) is fixedly connected with one end of the auxiliary corrugated pipe (4), and the other end of the auxiliary corrugated pipe (4) is fixedly connected with the blind cover (5).
2. The balanced exhaust branch assembly for a single cylinder diesel engine according to claim 1, wherein the first output end (12) and the second output end (13) are both hollow round tables having a diameter larger than that of the main pipe (112), one end of the main pipe (112) extends to the main bellows (2) as a first guide cylinder (113), and the other end of the main pipe (112) extends to the sub bellows (4) as a second guide cylinder (114).
3. The balanced exhaust manifold assembly for a single cylinder diesel engine according to claim 2, characterized in that said first guiding cylinder (113) extends to the junction of the main bellows (2) and the outlet pipe (3), and said second guiding cylinder (114) extends to the junction of the secondary bellows (4) and the blind cap (5).
4. The balanced exhaust branch assembly for a single cylinder diesel engine according to claim 1, wherein a first fixing plate (31) extending radially outward is provided near the inlet end of the output pipe (3), the blind cover (5) is divided into a connecting end (51) and a blind plate (52) which are integrally formed, and the connecting end (51) is fixedly connected with the secondary bellows (4); the blind plate (52) and the first fixing plate (31) are fixed through four pull rods (8) which are arranged in parallel up and down.
5. The balanced exhaust branch pipe assembly for the single cylinder diesel engine according to claim 4, wherein the blind plate (52) and the first fixing plate (31) are fixed by a fastener through a pull rod (8), the fastener comprises a fastening nut (6) and a limiting nut (7), two ends of the pull rod (8) respectively penetrate through the blind plate (52) and the first fixing plate (31) and then are fixed by the limiting nut (7) and the fastening nut (6), a spherical gasket is arranged between the fastening nut (6) and the blind plate (52), and a spherical gasket is arranged between the fastening nut (6) and the first fixing plate (31).
6. The balanced exhaust manifold assembly for a single cylinder diesel engine according to claim 5, characterized in that said limit nut (7) is set back a certain distance to lock when the exhaust manifold assembly is in place in the exhaust line.
7. The balanced exhaust manifold assembly for a single cylinder diesel engine according to claim 1, characterized in that the manifold (111) is a bent pipe, and the inner bent side is provided with a reinforcing plate (115), and the reinforcing plate (115) extends to the junction of the manifold (111) and the main pipe (112).
8. The balanced exhaust branch assembly for a single cylinder diesel engine according to claim 1, characterized in that the length of the primary bellows (2) is greater than the length of the secondary bellows (4).
9. The balanced exhaust branch assembly for a single cylinder diesel engine according to claim 1, characterized in that the outlet end of the outlet pipe (3) is reduced in diameter and connected to an outlet flange (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020161325.9U CN211950640U (en) | 2020-02-11 | 2020-02-11 | Balance type exhaust branch pipe assembly for single cylinder diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020161325.9U CN211950640U (en) | 2020-02-11 | 2020-02-11 | Balance type exhaust branch pipe assembly for single cylinder diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211950640U true CN211950640U (en) | 2020-11-17 |
Family
ID=73173922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020161325.9U Withdrawn - After Issue CN211950640U (en) | 2020-02-11 | 2020-02-11 | Balance type exhaust branch pipe assembly for single cylinder diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211950640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188678A (en) * | 2020-02-11 | 2020-05-22 | 中国船舶重工集团公司第七一一研究所 | Balance type exhaust branch pipe assembly for single cylinder diesel engine |
-
2020
- 2020-02-11 CN CN202020161325.9U patent/CN211950640U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188678A (en) * | 2020-02-11 | 2020-05-22 | 中国船舶重工集团公司第七一一研究所 | Balance type exhaust branch pipe assembly for single cylinder diesel engine |
| CN111188678B (en) * | 2020-02-11 | 2024-04-02 | 中国船舶集团有限公司第七一一研究所 | Balanced type exhaust branch pipe assembly for single cylinder diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9151697B2 (en) | Method of measuring loadings in joins in a high-temperature environment and instrumented shaft for implementation, in particular for rear attachment of aircraft turbojet | |
| CN211950640U (en) | Balance type exhaust branch pipe assembly for single cylinder diesel engine | |
| CN203499881U (en) | Fuel guide rail, engine comprising fuel guide rail and vehicle comprising fuel guide rail | |
| CN106475721A (en) | Special-shaped sealing of tube clamping device | |
| CN111188678B (en) | Balanced type exhaust branch pipe assembly for single cylinder diesel engine | |
| CN111780957A (en) | Test platform for testing static and dynamic mechanical properties of L-shaped pipeline of aircraft engine | |
| CN203783717U (en) | Air outlet hard tube assembly structure for automobile intercooler | |
| JP4995990B1 (en) | Large two-stroke diesel engine, and support plate structure for connecting engine main structure and exhaust gas receiver | |
| CN109520838B (en) | Tensile property test device for shield tunnel bolt joint | |
| CN112179668A (en) | Thermal state performance test protection device for gas turbine engine component | |
| CN211851972U (en) | Integral wave-shaped expansion joint of flow guide pipe | |
| CN114323527B (en) | Multifunctional test bed for parts of exhaust system of diesel engine | |
| CN220487712U (en) | Intercooling pipe connection structure of engine | |
| CN201461145U (en) | Pipe for exhaust gas recirculation system | |
| CN112834227A (en) | Exhaust system of single-cylinder diesel engine simulation complete machine | |
| CN221054193U (en) | Dynamic vibration absorber suitable for small branch pipe | |
| CN102928179A (en) | Device for testing tightness of combustors of diesel engine | |
| CN111173606B (en) | Integral wave-shaped expansion joint of honeycomb duct | |
| CN215334975U (en) | Well-sealed high-pressure joint structure | |
| CN220888773U (en) | H-shaped high-strength connecting rod for hydraulic excavator | |
| CN216383050U (en) | Straight pipe pressure balance compensator | |
| CN216788524U (en) | Gasoline engine silencer connecting structure | |
| CN210483917U (en) | EGR cooler fixing device | |
| CN213743625U (en) | Exhaust pipe and engine | |
| CN116025487A (en) | Hydraulic test tool for strength of jet pipe shell of solid rocket engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201117 Effective date of abandoning: 20240402 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20201117 Effective date of abandoning: 20240402 |