CN117723263A - Propeller-shaft system experiment platform - Google Patents
Propeller-shaft system experiment platform Download PDFInfo
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- CN117723263A CN117723263A CN202311667376.3A CN202311667376A CN117723263A CN 117723263 A CN117723263 A CN 117723263A CN 202311667376 A CN202311667376 A CN 202311667376A CN 117723263 A CN117723263 A CN 117723263A
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- paddle
- water tunnel
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- 238000002474 experimental method Methods 0.000 title claims abstract description 18
- 230000005284 excitation Effects 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 230000008878 coupling Effects 0.000 claims abstract description 28
- 238000010168 coupling process Methods 0.000 claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 claims abstract description 28
- 230000004044 response Effects 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims description 32
- 238000005259 measurement Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000001808 coupling effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The embodiment of the application provides a oar-shaft system experiment platform, including circulating water tunnel, inhomogeneous inflow generating device, oar-shaft coupling unit, measuring unit and unbalanced excitation structure: the non-uniform incoming flow generating device is connected with the test section of the circulating water tunnel and is used for generating non-uniform incoming flow in the test section; the propeller-shaft coupling unit comprises a propeller, a propulsion shafting and a driving element which are sequentially connected, and the propeller is arranged in a test section of the circulating water tunnel; the measuring unit is used for measuring dynamic response data of the propulsion shafting, and the unbalanced excitation structure is used for dynamically simulating unbalanced excitation of the propulsion shafting.
Description
Technical Field
The application relates to the technical field of ship shafting tests, in particular to a paddle-shafting test platform.
Background
In marine power plants, the coupling system consisting of the propeller and the propulsion shaft system is a relatively important component, and there is a complex coupling effect in the propeller-propulsion shaft system. In the related art, when a propeller and a propulsion shafting are researched, a simulation experiment cannot be fully and accurately carried out on the coupling effect between the propeller and the propulsion shafting, excitation influencing factors of a propeller-shaft coupling system cannot be fully reflected on the basis of dynamics response data obtained through the experiment, and reliability and safety of the propeller-shaft coupling system in actual use are difficult to ensure.
Disclosure of Invention
The embodiment of the application provides a paddle-shaft system experiment platform which can comprehensively filter and couple excitation influence factors in dynamic response data and improve the reliability and safety of a coupling system.
The embodiment of the application provides a oar-shafting experimental platform, including circulating water tunnel, inhomogeneous inflow generating device, oar-shafting coupling unit, measuring unit and unbalanced excitation structure: the non-uniform incoming flow generating device is connected with the test section of the circulating water tunnel and is used for generating non-uniform incoming flow in the test section; the propeller-shaft coupling unit comprises a propeller, a propulsion shafting and a driving element which are sequentially connected, and the propeller is arranged in a test section of the circulating water tunnel; the measuring unit is used for measuring dynamic response data of the propulsion shafting, and the unbalanced excitation structure is arranged on the propulsion shafting and used for dynamically simulating unbalanced excitation of the propulsion shafting.
In some embodiments, the paddle-shaft system experiment platform comprises a mounting base, the circulating water tunnel and the driving element are respectively arranged on the mounting base, and the propulsion shaft system extends out of the circulating water tunnel and is connected with the driving element.
In some embodiments, the measuring unit includes an underwater six-component dynamic force sensor, a first displacement sensor, a second displacement sensor and a rotation speed sensor, wherein the underwater six-component dynamic force sensor is arranged on the propulsion shaft system and is used for measuring six-directional dynamic force components of the propulsion shaft system, the first displacement sensor is used for measuring axial displacement of the propulsion shaft system, the second displacement sensor is used for measuring radial displacement of the propulsion shaft system, and the rotation speed sensor is used for measuring rotation speed of the propulsion shaft system.
In some embodiments, the paddle-shaft system experiment platform comprises a mounting base, the circulating water tunnel and the driving element are respectively arranged on the mounting base, and the propulsion shaft system extends out of the circulating water tunnel and is connected with the driving element; the underwater six-component dynamic force sensor is positioned in the test section of the circulating water tunnel, and the first displacement sensor, the second displacement sensor and the rotating speed sensor are respectively arranged in the area between the circulating water tunnel and the driving element and are arranged corresponding to the propulsion shafting.
In some embodiments, the measurement unit further comprises a waterproof conductive slip ring disposed on the propulsion shaft system, the waterproof conductive slip ring and the underwater six-component dynamic force sensor being connected by a waterproof cable.
In some embodiments, the unbalanced excitation structure is disposed on the propulsion shaft system, and the unbalanced excitation structure can change the relative position of the unbalanced excitation structure and the propulsion shaft system in an axial direction of the propulsion shaft system or change the attitude angle of the unbalanced excitation structure and the propulsion shaft system in a rotating manner around the axial direction of the propulsion shaft system so as to dynamically simulate the unbalanced excitation of the propulsion shaft system.
In some embodiments, the circulating water tunnel is provided with a first rectifying section, a shrinkage section, the test section and a second rectifying section which are sequentially arranged, and at least one side wall of the test section is a transparent side wall.
In some embodiments, the circulating water tunnel is a closed low turbulence circulating water tunnel.
In some embodiments, the paddle-shaft coupling unit includes a waterproof bearing disposed within the test section of the circulating water tunnel, the propulsion shaft being disposed on the waterproof bearing.
In some embodiments, the paddle-shaft coupling unit includes a frequency converter, the frequency converter and the drive element being electrically connected.
According to the embodiment of the application, the circulating water tunnel and the non-uniform incoming flow generating device are arranged, the non-uniform incoming flow of the propeller is simulated in an actual sailing environment, and unbalanced excitation actually existing in the propulsion shafting is simulated through the unbalanced excitation structure, so that the measured dynamic response data comprise main excitation influence factors such as hydrodynamic excitation of the propeller and unbalanced excitation of the propulsion shafting, and the coupling excitation influence factors of a propeller-shaft system are comprehensively filtered; therefore, more accurate research and calculation can be performed based on dynamic response data, so that the problem of influence of coupling excitation is solved well, and the reliability and safety of a coupling system are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a plan view block diagram of a paddle-shaft system experiment platform provided by some embodiments of the present application.
Description of main reference numerals:
the device comprises the following components of a 10-circulating water tunnel, a 11-first rectifying section, a 12-contracting section, a 13-test section, a 14-second rectifying section, a 15-turbine clamp type butterfly valve, a 16-electromagnetic flowmeter, a 17-wave generating device, an 18-pipeline, a 191-pipeline clamp, a 192-hose connector, a 20-non-uniform incoming flow generating device, a 31-propeller, a 32-propulsion shafting, a 33-driving element, a 34-frequency converter, a 35-waterproof bearing, a 41-underwater six-component dynamic force sensor, a 42-first displacement sensor, a 43-second displacement sensor, a 44-rotating speed sensor, a 45-waterproof conductive slip ring, a 50-unbalanced excitation structure, a 60-mounting base and a 70-mounting bracket.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
"A and/or B" includes the following three combinations: only a, only B, and combinations of a and B.
The use of "adapted" or "configured to" in this application is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps. In addition, the use of "based on" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" one or more of the stated conditions or values may be based on additional conditions or beyond the stated values in practice.
In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been shown in detail to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The inventors have found that the excitation to which the propeller-shaft coupling system is subjected is mainly derived from the hydrodynamic excitation of the propeller and the unbalanced excitation of the components in the propulsion shaft system. Wherein the hydrodynamic excitation of the propeller mainly results from a non-uniform incoming flow, while the unbalanced excitation of the propulsion shafting components mainly results from an unbalanced mass distribution of the components in the propulsion shafting. The non-uniformity of the incoming flow of the propeller and the unbalance amount of the propulsion shaft system are key influencing factors of the excitation of the propeller-shaft coupling system.
As shown in fig. 1, the embodiment of the application provides a paddle-shaft system experiment platform, which includes a circulating water tunnel 10, a non-uniform incoming flow generating device 20, a paddle-shaft coupling unit, a measuring unit and an unbalanced excitation structure 50, so that excitation influencing factors can be comprehensively filtered and coupled in dynamic response data, and the reliability and safety of a coupling system are improved.
The non-uniform incoming flow generating device 20 is connected with the test section 13 of the circulating water tunnel 10, and is used for generating non-uniform incoming flow in the test section 13. Here, the fluid in the test section 13 may be caused to exhibit a desired non-uniformity by the non-uniform incoming flow generating device 20 to exert a non-uniform effect on the fluid in the test section 13, thereby forming a non-uniform incoming flow. The non-uniform incoming flow generating device 20 may generate a non-uniform incoming flow based on different principles, and may use, for example, vibration, stirring, etc., which is not limited in the embodiment of the present application. In this way, by arranging the circulating water tunnel 10 and the non-uniform incoming flow generating device 20, the non-uniform incoming flow suffered by the propeller 31 in the actual sailing environment can be simulated, the non-uniformity of the simulated non-uniform incoming flow can be accurately controlled, and an incoming flow environment consistent with or similar to the real environment can be provided for the subsequent simulation experiment of the propeller 31.
The propeller-shaft coupling unit comprises a propeller 31, a propulsion shaft system 32 and a drive element 33, which are connected in sequence. The propeller 31 is arranged in the test section 13 of the circulating water tunnel 10 and directly works in a non-uniform inflow environment in the test section 13. The propulsion shaft 32 connects the propeller 31 and the driving element 33, and transmits the driving force output from the driving element 33 to the propeller 31, thereby driving the propeller 31 to rotate. Here, the propeller 31 and the propulsion shaft 32 may be equal-proportion models of the actual structure of the ship, in order to accurately restore the actual structure of the ship. The type of the driving element 33 may be determined according to actual needs, and for example, a driving motor, a hydraulic motor, etc. may be used, so long as the actual driving state of the ship can be accurately restored, which is not limited in the embodiment of the present application.
An imbalance excitation mechanism 50 is disposed on propulsion shafting 32 for dynamically simulating imbalance excitation of propulsion shafting 32. Here, the unbalanced excitation present in the propulsion shafting 32 may be pre-calculated from the actual structure of the vessel; based on the calculated imbalance excitation values, the imbalance excitation structure 50 may be adjusted such that the excitation of the propulsion shafting 32 by the imbalance excitation structure 50 is equal to or near the actual imbalance excitation. Thus, the actual unbalance excitation of the propulsion shaft system 32 can be simulated more truly through the unbalance excitation structure 50, and the simulated unbalance excitation can be actively regulated to match the unbalance excitation simulating different actual shaft systems.
The measurement unit is used to measure the kinetic response data of the propulsion shafting 32. The type of the dynamic response data of the propulsion shafting 32 may be determined according to actual needs, and may include, for example, dynamic forces to which the propulsion shafting 32 is subjected, pose changes of the propulsion shafting 32, and rotational speed parameters, which are not limited in the embodiment of the present application. Here, the measuring unit may match the corresponding measuring device according to the type of the dynamic response data actually required to be measured. In this way, the dynamic response data measured by the measuring unit, which includes hydrodynamic excitation of the propeller 31 and unbalanced excitation of the propulsion shafting 32, can more comprehensively filter the coupling excitation influence factors of the propeller-shaft system.
According to the paddle-shaft system experimental platform provided by the embodiment of the application, the circulating water tunnel 10, the non-uniform incoming flow generating device 20 and the simulation propeller 31 are arranged to be subjected to non-uniform incoming flow in an actual sailing environment, and unbalanced excitation actually existing in the propulsion shaft system 32 is simulated through the unbalanced excitation structure 50, so that the measured dynamic response data comprise main excitation influencing factors such as hydrodynamic excitation of the propeller 31 and unbalanced excitation of the propulsion shaft system 32, and the coupling excitation influencing factors of the paddle-shaft system are comprehensively filtered; therefore, more accurate research and calculation can be performed based on dynamic response data, so that the problem of influence of coupling excitation is solved well, and the reliability and safety of a coupling system are improved.
In some embodiments, the paddle-shaft system experiment platform may include a mounting base 60, the circulating water tunnel 10 and the driving element 33 are respectively disposed on the mounting base 60, and the propulsion shaft system 32 extends out of the circulating water tunnel 10 and is connected with the driving element 33. Thus, the driving element 33 can be arranged outside the circulating water tunnel 10, the requirement of water resistance on the driving element 33 is not required, and the requirement of model selection and the purchase cost of the driving element 33 are reduced. In some examples, the circulating water tunnel 10 may be fixed to the mounting base 60 by the mounting bracket 70.
In some embodiments, the measurement unit may include an underwater six-component dynamic force sensor 41, a first displacement sensor 42, a second displacement sensor 43, and a rotational speed sensor 44. An underwater six-component dynamic force sensor 41 is provided on the propulsion shafting 32 for measuring six-directional dynamic force components of the propulsion shafting 32, such as dynamic force components along three axes and dynamic torque components around three axes. The first displacement sensor 42 is used for measuring the axial displacement of the propulsion shafting 32, and the second displacement sensor 43 is used for measuring the radial displacement of the propulsion shafting 32, so that the axial play and the radial runout of the propulsion shafting 32 in the rotating process can be accurately measured. The rotational speed sensor 44 is used to measure the rotational speed of the propulsion shafting 32.
The types of the first displacement sensor 42 and the second displacement sensor 43 may be determined according to actual needs, and for example, types such as an eddy current type displacement sensor, a photoelectric type displacement sensor, and the like may be used, which is not limited in the embodiment of the present application. The type of the rotation speed sensor 44 may be determined according to actual needs, and for example, a photoelectric rotation speed sensor, a hall effect rotation speed sensor, or the like may be used, which is not limited in the embodiment of the present application.
In some examples, the paddle-shaft system experimental platform may include the mounting base 60 described above. Here, the underwater six-component dynamic force sensor 41 may be located in the test section 13 of the circulating water tunnel 10, and the first displacement sensor 42, the second displacement sensor 43, and the rotation speed sensor 44 are respectively disposed in the region between the circulating water tunnel 10 and the driving element 33, and are disposed corresponding to the propulsion shafting 32. In this way, the underwater six-component dynamic force sensor 41 can measure the dynamic force of the propulsion shafting 32 in the fluid environment of the test section 13, and the accuracy of the measurement result is ensured; the first displacement sensor 42, the second displacement sensor 43 and the rotating speed sensor 44 are positioned outside the circulating water tunnel 10, so that the waterproof requirement on devices is not required, and the type selection requirement and the purchase selection cost are reduced.
In some embodiments, the measurement unit may also include a waterproof conductive slip ring 45. The waterproof conductive slip ring 45 is arranged on the propulsion shafting 32, and the waterproof conductive slip ring 45 is connected with the underwater six-component dynamic force sensor 41 through a waterproof cable.
In some embodiments, the unbalanced excitation structure 50 may be disposed on the propulsion shafting 32. The imbalance excitation mechanism 50 may slidably change its relative position to the propulsion shafting 32 in the axial direction of the propulsion shafting 32 or rotationally change its attitude angle to the propulsion shafting 32 about the axial direction of the propulsion shafting 32 to dynamically simulate an imbalance condition of the propulsion shafting 32. In other words, for different actual shafting, the unbalanced excitation structure 50 may be adjusted by at least one of axial sliding and axial rotation, so that the unbalanced excitation structure 50 may be adapted to simulate an unbalanced excitation state of the different actual shafting.
In some embodiments, the circulating water tunnel 10 may have a first rectifying section 11, a contracting section 12, a test section 13, and a second rectifying section 14 disposed in this order, at least one side wall of the test section 13 being a transparent side wall. Since at least one side wall of the test section 13 is a transparent side wall, the test process can be directly observed or recorded. In some examples, the circulating water tunnel 10 may further include a turbine-clamped butterfly valve 15, an electromagnetic flowmeter 16, and a wave-making device 17, wherein the turbine-clamped butterfly valve 15, the electromagnetic flowmeter 16, and the wave-making device 17 are connected through a pipe 18, a hose connector 192 is further disposed between the wave-making device 17 and the pipe 18, and the pipe 18 is fixed on the mounting base 60 through a pipe clamp 191.
The type of the circulating water tunnel 10 can be determined according to actual needs, and the embodiment of the present application is not limited thereto. In some embodiments, the circulating water tunnel 10 may be a closed low turbulence circulating water tunnel 10.
In some embodiments, the paddle-shaft coupling unit may include a waterproof bearing 35, the waterproof bearing 35 being disposed within the test section 13 of the circulating water tunnel 10, the propulsion shafting 32 being disposed on the waterproof bearing 35. The type of the waterproof bearing 35 may be determined according to actual needs, and for example, a rolling bearing or the like may be used, which is not limited in the embodiment of the present application.
In some embodiments, the paddle-shaft coupling unit may include a frequency converter 34, the frequency converter 34 being electrically connected to the drive element 33. The drive element 33 can be controlled by means of a frequency converter 34.
The above describes the paddle-shaft system experimental platform provided by the embodiment of the present application in detail, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the description of the above embodiments is only used to help understand the method and core idea of the present application; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (10)
1. The paddle-shaft system experiment platform is characterized by comprising a circulating water tunnel, a non-uniform incoming flow generating device, a paddle-shaft coupling unit, an unbalanced excitation structure and a measuring unit:
the non-uniform incoming flow generating device is connected with the test section of the circulating water tunnel and is used for generating non-uniform incoming flow in the test section; the propeller-shaft coupling unit comprises a propeller, a propulsion shafting and a driving element which are sequentially connected, and the propeller is arranged in a test section of the circulating water tunnel; the unbalanced excitation structure is arranged on the propulsion shaft system and is used for dynamically simulating unbalanced excitation of the propulsion shaft system; the measuring unit is used for measuring dynamic response data of the propulsion shafting.
2. The paddle-shaft system experiment platform of claim 1, wherein the paddle-shaft system experiment platform comprises a mounting base, the circulating water tunnel and the driving element are respectively arranged on the mounting base, and the propulsion shaft system extends out of the circulating water tunnel and is connected with the driving element.
3. The paddle-shaft system experimental platform of claim 1, wherein the measurement unit comprises an underwater six-component dynamic force sensor, a first displacement sensor, a second displacement sensor and a rotation speed sensor, wherein the underwater six-component dynamic force sensor is arranged on the propulsion shaft system and is used for measuring six-directional dynamic force components of the propulsion shaft system, the first displacement sensor is used for measuring axial displacement of the propulsion shaft system, the second displacement sensor is used for measuring radial displacement of the propulsion shaft system, and the rotation speed sensor is used for measuring rotation speed of the propulsion shaft system.
4. A paddle-shaft system experimental platform according to claim 3, comprising a mounting base, the circulating water tunnel and the driving element being respectively arranged on the mounting base, the propulsion shaft extending out of the circulating water tunnel and being connected with the driving element; the underwater six-component dynamic force sensor is positioned in the test section of the circulating water tunnel, and the first displacement sensor, the second displacement sensor and the rotating speed sensor are respectively arranged in the area between the circulating water tunnel and the driving element and are arranged corresponding to the propulsion shafting.
5. The paddle-shaft system experiment platform of claim 3, wherein the measurement unit further comprises a waterproof conductive slip ring disposed on the propulsion shaft system, the waterproof conductive slip ring and the underwater six-component dynamic force sensor being connected by a waterproof cable.
6. The paddle-shaft system experiment platform of claim 1, wherein the unbalanced excitation structure is disposed on the propulsion shaft system, and the unbalanced excitation structure can slidably change its relative position to the propulsion shaft system along the axial direction of the propulsion shaft system or change its attitude angle to the propulsion shaft system rotationally about the axial direction of the propulsion shaft system to dynamically simulate the unbalanced excitation of the propulsion shaft system.
7. The paddle-shaft system experiment platform of claim 1, wherein the circulating water tunnel has a first rectifying section, a shrinking section, the test section and a second rectifying section arranged in sequence, and at least one side wall of the test section is a transparent side wall.
8. The paddle-shaft system experiment platform of claim 1, wherein the circulating water tunnel is a closed low turbulence circulating water tunnel.
9. The paddle-shaft system experiment platform of claim 1, wherein the paddle-shaft coupling unit includes a waterproof bearing disposed within the test section of the circulating water tunnel, the propulsion shaft being disposed on the waterproof bearing.
10. The paddle-shaft system experimental platform of claim 1, wherein the paddle-shaft coupling unit comprises a frequency converter, the frequency converter and the drive element being electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311667376.3A CN117723263A (en) | 2023-12-06 | 2023-12-06 | Propeller-shaft system experiment platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311667376.3A CN117723263A (en) | 2023-12-06 | 2023-12-06 | Propeller-shaft system experiment platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117723263A true CN117723263A (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311667376.3A Pending CN117723263A (en) | 2023-12-06 | 2023-12-06 | Propeller-shaft system experiment platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117723263A (en) |
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2023
- 2023-12-06 CN CN202311667376.3A patent/CN117723263A/en active Pending
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