CN110132599B - Testing device for water-opening performance of pump-jet propeller - Google Patents
Testing device for water-opening performance of pump-jet propeller Download PDFInfo
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- CN110132599B CN110132599B CN201910257669.1A CN201910257669A CN110132599B CN 110132599 B CN110132599 B CN 110132599B CN 201910257669 A CN201910257669 A CN 201910257669A CN 110132599 B CN110132599 B CN 110132599B
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- 238000012360 testing method Methods 0.000 title claims abstract description 81
- 230000005540 biological transmission Effects 0.000 claims abstract description 73
- 239000007921 spray Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 238000002474 experimental method Methods 0.000 claims description 2
- 238000011056 performance test Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013143 model size reduction Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
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Abstract
The invention discloses a testing device for the water opening performance of a pump spray propeller, which relates to the field of propeller testing devices and comprises a pump spray propeller rotor, wherein the pump spray propeller rotor is arranged at the output end of a transverse transmission shaft, a driven bevel gear is arranged at the input end of the transverse transmission shaft and driven by a driving bevel gear, the driving bevel gear is arranged at the output end of a longitudinal transmission shaft, and the input end of the longitudinal transmission shaft is connected with a motor by a coupling; the motor is arranged on the test trolley, the test trolley is arranged on the external fixing frame, the pre-tightening spring and the pressure sensor are arranged at two ends of the test trolley, and the arrangement position of the pressure sensor is consistent with the direction of the horizontal transverse force acted on the driving bevel gear by the driven bevel gear; and a power instrument is further arranged on the transverse transmission shaft. The invention has the advantages of exquisite structural arrangement and stable work, can accurately test the water uncovering performance of the pump-jet propeller, and can be widely applied to the water uncovering performance test of the pump-jet propeller.
Description
Technical Field
The invention relates to a propeller testing device, in particular to a testing device for the water opening performance of a pump-jet propeller.
Background
Pump jet propellers are a type of ducted propeller that contain either a front stator or a rear stator. As a new propeller developed in recent years, the propeller has the advantages of high propulsion efficiency, low radiation noise, high critical navigational speed and the like, and has very wide application in various fields. However, research on the technology of the pump jet propulsion in China starts later, and design theory, performance test and application aspects of the pump jet propulsion are not perfect compared with those of the pump jet propulsion in abroad. In the aspect of performance test of the pump jet propeller, due to the complex structure of the pump jet propeller, a plurality of technical barriers exist on thrust test. The thrust of the pump jet propeller can only be obtained in an indirect way at the present stage.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a device for testing the water uncovering performance of a pump-jet propeller, wherein the device acquires the thrust of the pump-jet propeller through a pressure sensor, and acquires the torque and the rotating speed on a transverse transmission shaft through a power meter, so that the input power of a rotor of the pump-jet propeller is obtained, and the water uncovering performance of the pump-jet propeller under the real operation condition is obtained.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The device for testing the water uncovering performance of the pump spray propeller comprises a pump spray propeller rotor, wherein the pump spray propeller rotor is arranged at the output end of a transverse transmission shaft, a driven bevel gear is arranged at the input end of the transverse transmission shaft, the driven bevel gear is driven by a driving bevel gear, the driving bevel gear is arranged at the output end of a longitudinal transmission shaft, and the input end of the longitudinal transmission shaft is connected with a motor through a coupler; the motor is arranged on the test trolley, the test trolley is arranged on the external fixing frame, the pre-tightening spring and the pressure sensor are arranged at two ends of the test trolley, and the arrangement position of the pressure sensor is consistent with the direction of the horizontal transverse force acted on the driving bevel gear by the driven bevel gear; and a power instrument is further arranged on the transverse transmission shaft.
Further, the pump spray propeller stator is arranged on the outer side of the pump spray propeller rotor; the pump spray propeller stator is arranged on one side of the shell.
Further, the longitudinal transmission shaft and the transverse transmission shaft are respectively arranged in the longitudinal transmission shaft sleeve and the transverse transmission shaft sleeve through bearings.
Further, the pump spray propeller stator comprises a guide pipe and a front guide vane, the center of the front guide vane is of a flange structure, the flange structure is in fastening connection with the shell, and a waterproof gasket is arranged between the shell and the flange structure.
Further, the housing and the pump spray impeller rotor and pump spray impeller stator are disposed within the sink.
Further, the system also comprises a data acquisition system, wherein the data acquisition system acquires data of the pressure sensor and the power instrument in the experiment.
Further, a trolley roller is arranged on the test trolley.
Furthermore, an adjustable nut is arranged on the pre-tightening spring.
Further, a baffle is arranged above the pressure sensor.
The beneficial effects are that:
1. The invention adopts the external fixing frame to fix the rear end of the inner side and adds the pre-tightening spring to provide forward pre-tightening force for the test trolley, so that the pressure sensor of the test trolley can be corrected, the influence of friction force generated between the roller of the test trolley and the outer frame is reduced, and the accuracy of thrust measurement is improved.
2. According to the invention, the driving shaft sleeves are arranged outside the longitudinal driving shaft and the transverse driving shaft, so that the positions of the longitudinal driving shaft and the transverse driving shaft are prevented from being deviated due to overlarge torsional force of the driving shaft, and the stability of a workpiece in a test process is improved;
3. According to the invention, the baffle is arranged on the pressure sensor, so that the test trolley is prevented from tilting upwards under the action of thrust torque, and the stability of the test trolley in the test process is enhanced;
4. The transmission shaft and the transmission shaft sleeve are simple in structure and convenient to replace, the lengths of the longitudinal transmission shaft and the longitudinal transmission shaft sleeve can be changed, and the water-free performance test of the propeller at different depths can be realized;
5. The motor is externally arranged, so that the requirement on the tightness of the shell is reduced, and the safety factor of short circuit caused by water leakage is reduced;
6. The invention directly places the power instrument in the middle of the transverse transmission shaft, can directly acquire the rotating speed and torque of the rotor of the pump jet propeller, and the acquired data is more accurate.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a test device for the water-opening performance of a pump-jet propeller;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a cross-sectional view taken along line B-B of fig. 1.
Reference numerals:
1. An external fixing frame; 2. a motor; 3. a test trolley; 4. a pre-tightening spring; 5. a pressure sensor; 6. trolley roller; 7. a first bearing; 8. a longitudinal transmission shaft sleeve; 9. a longitudinal drive shaft; 10. a pump jet propeller rotor; 11. a third bearing; 12. a transverse transmission shaft sleeve; 13. a power meter; 14. a housing; 15. a second bearing; 16. a conduit; 17. leading guide vanes; 18. a transverse transmission shaft; 19. a fourth bearing; 20. a driven bevel gear; 21. and a drive bevel gear.
Detailed Description
For a further understanding of the invention, the invention is described in detail below with reference to the drawings and examples.
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The device for testing the water opening performance of the pump spray propeller comprises a pump spray propeller rotor 10, wherein the pump spray propeller rotor 10 is arranged at the output end of a transverse transmission shaft 18, a driven bevel gear 20 is arranged at the input end of the transverse transmission shaft 18, the driven bevel gear 20 is driven by a drive bevel gear 21, the drive bevel gear 21 is arranged at the output end of a longitudinal transmission shaft 9, and the input end of the longitudinal transmission shaft 9 is connected with a motor 2 through a coupling; the motor 2 is arranged on the test trolley 3, the test trolley 3 is arranged on the external fixing frame 1, the pre-tightening spring 4 and the pressure sensor 5 are arranged at two ends of the test trolley 3, and the arrangement position of the pressure sensor 5 is consistent with the direction of the horizontal transverse force acted on the driving bevel gear 21 by the driven bevel gear 20; the transverse transmission shaft 18 is also provided with a power meter 13; the pump spray propeller stator is arranged on the outer side of the pump spray propeller rotor 10; the pump impeller stator is disposed on one side of the housing 14. The pre-tightening spring is additionally arranged at the rear end of the inner side of the outer fixing frame, so that forward pre-tightening force is provided for the test trolley, the pressure sensor of the test trolley can be corrected, the influence of friction force generated between the idler wheels of the test trolley and the outer frame is reduced, and the accuracy of thrust measurement is improved.
The longitudinal transmission shaft 9 and the transverse transmission shaft 18 are respectively arranged in the longitudinal transmission shaft sleeve 8 and the transverse transmission shaft sleeve 12 through bearings. According to the invention, the driving shaft sleeves are arranged outside the longitudinal driving shaft and the transverse driving shaft, so that the positions of the longitudinal driving shaft and the transverse driving shaft are prevented from being deviated due to overlarge torsional force, and the stability of a workpiece in a test process is improved.
The baffle is arranged above the pressure sensor 5, and the baffle is arranged on the pressure sensor, so that the test trolley is prevented from tilting upwards under the action of thrust torque, and the stability of the test trolley in the test process is enhanced.
Referring to fig. 1 and 3, the external part of the invention comprises an external fixing frame 1 fixed on the ground, a test trolley 3 limited to move on the external fixing frame 1, pressure sensors 5 are arranged on two sides of the front end inside the external fixing frame 1, a pre-tightening spring 4 is arranged on two sides of the rear end of the external fixing frame and is used for pre-tightening the test trolley 3, and the pre-tightening force is far greater than the friction force between the test trolley 3 and the external fixing frame 1, so that the test trolley 3 is fully contacted with the pressure sensors 5. Before testing, the pressure sensors 5 at the two ends are corrected, the pre-tightening force of the pre-tightening spring 4 is changed by adjusting the nuts of the pre-tightening spring, the values of the first pressure sensor 51 and the second pressure sensor 52 at the two ends are equal, and then the values are zeroed.
As shown in fig. 1 and 2, the motor 2 is fixed to the center of the test cart 3, and outputs torque by connecting the longitudinal transmission shaft 9. The lower end of the longitudinal transmission shaft 9 is provided with a driving bevel gear 21 and a driven bevel gear 20, torque is output to the transverse transmission shaft 18, the transverse transmission shaft 18 outputs torque to the pump spray propeller rotor 10, and the two ends of the longitudinal transmission shaft 9 and the transverse transmission shaft 18 are respectively provided with a first bearing 7, a second bearing 15, a third bearing 11, a fourth bearing 19, a transverse transmission shaft sleeve 12 and a longitudinal transmission shaft sleeve 8 so as to ensure the working stability of the device.
Referring to fig. 1 and 2, the upper end of the longitudinal transmission shaft sleeve 8 is fixedly connected with the test trolley 3 through a flange, the lower end of the longitudinal transmission shaft sleeve 8 is connected with the shell 14 through a flange, a waterproof gasket is arranged in the middle of the longitudinal transmission shaft sleeve, and the concave part of the upper end of the shell 14 is uniformly filled and polished by using foam.
Referring to fig. 1 and 2, the guide tube 16 and the front guide vane 17 are connected with the tail of the shell 14 through a flange, a waterproof gasket is arranged in the middle of the flange of the front guide vane 17, and foam is used for filling and polishing the bolt holes of the front guide vane 17, so that the surface of the front guide vane is smooth.
Referring to fig. 2, a reinforcing rib is provided at the front end of the transverse transmission shaft sleeve 12, and is welded on the housing 14, the tail of the transverse transmission shaft sleeve 12 is connected with the housing 14, and a power meter 13 is installed in the middle to measure the rotation speed and output torque of the transverse transmission shaft 18.
The measurement and analysis system comprises a power meter 13 arranged in the middle of a transverse transmission shaft 18; a pressure sensor 5 arranged at the front end of the inner side of the external fixing frame 1; the sensor is arranged at the front flow velocity of the pool; the pressure sensor data acquisition system, the power instrument data acquisition system and the computer equipment are arranged on the control console.
According to the invention, the proper model size reduction ratio, the transmission ratio of the transmission part and the test working condition are selected according to the size of the pool, the size of the pump jet propeller, the specific condition of the test working condition and the economical efficiency of the test. The size, material and specification of each module are determined according to the strength requirement of the whole test device and the vibration control requirement.
The specific installation process is as follows:
1) The external fixing frame 1 is transversely arranged above the water pool on the ground and is fixed on the ground.
2) Mounting a test trolley 3: placing the test trolley 3 in the external fixing frame 1, tightly attaching a first pressure sensor 51 and a second pressure sensor 52 to the front end of the test trolley 3, and installing a first pre-tightening spring 41 and a second pre-tightening spring 42 to the rear end of the test trolley 3, wherein the first pre-tightening spring 41 and the second pre-tightening spring 42 provide forward pre-tightening force for the test trolley 3;
3) And (3) installing a transmission part: the third bearing 11 and the fourth bearing 19 are arranged at two ends of the transverse transmission shaft sleeve 12, the transverse transmission shaft 18 and a driven bevel gear 20 at one end of the transverse transmission shaft 18 are arranged, the power instrument 13 is arranged in the middle of the transverse transmission shaft 18, and the longitudinal transmission shaft 9 and a driving bevel gear 21 thereof are arranged;
4) Installing a pump jet propeller: the pump spray propeller stator, namely the guide pipe 16 and the front guide vane 17 are arranged at the tail part of the shell 14 and are connected by a flange, a waterproof gasket is arranged in the middle of the pump spray propeller stator, and foam is used for filling and polishing the concave part at the upper end of the shell 14 uniformly. Mounting the pump jet propulsion rotor 10 at the tail end of the transverse transmission shaft 18;
5) Connect the housing 14 with the test cart 3: the two ends of a longitudinal transmission shaft sleeve 8 are provided with a first bearing 7 and a second bearing 15 and sleeved into a longitudinal transmission shaft 9, the lower end of the longitudinal transmission shaft sleeve 8 is connected with a shell 14 through a flange, a waterproof gasket is arranged in the middle of the longitudinal transmission shaft sleeve, foam is used for filling and polishing the concave part at the upper end of the shell 14 uniformly, and the upper end of the longitudinal transmission shaft sleeve is fixedly connected with a flange of a test trolley 3;
6) And (3) installing a motor 2: the motor 2 is fixed on the test trolley 3, and power output is carried out on the longitudinal transmission shaft 9;
7) Real-time analysis software is installed on a computer, a data line led out by the power instrument 13 and the pressure sensor 5 is connected to the computer, and meanwhile, the measuring instrument is connected with a power supply;
8) Debugging device after whole installation is accomplished: the first pre-tightening spring 41 and the second pre-tightening spring 42 are adjusted, so that the pre-tightening force is far greater than the friction force between the test trolley 3 and the external fixing frame 1, and after the values of the pressure sensors 5 at the two ends of the test trolley are the same, the pressure sensors 5 are zeroed: after the debugging is finished, the test device can be started to test according to specific working conditions and test technical requirements.
Specifically, the test trolley 3 is transversely placed in the external fixing frame 1 and can move left and right in a directional manner along with the direction of the trolley roller 6. In order to make the front end of the test trolley 3 fully contact with the two pressure sensors 5 of the external fixing frame 1, two pre-tightening springs 4 are arranged at the rear end of the test trolley 3, so that the value of the pressure sensors 5 is greater than zero, and then the value of the pressure sensors 5 is reset to zero. After the debugging is finished, under the operating condition, the value obtained from the pressure sensor 5 is equal to the thrust T of the pump jet propeller. In order to obtain the input power of the pump jet propeller rotor 10, a power meter 13 is additionally arranged on a transverse transmission shaft 18 at the rear end of the pump jet propeller rotor 10, and the power meter 13 can directly acquire the torque M and the rotating speed n on the transverse transmission shaft 18.
In the test process, the rotation speed n, the torque M, the resultant force T and the fixed flow velocity v are obtained in real time, wherein the rotation speed n, the torque M and the resultant force T are measured by the pressure sensor 5, and the fixed flow velocity v is provided by the water pool. The pump jet propulsion efficiency formula on the test device is as follows:
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Claims (9)
1. The device for testing the water opening performance of the pump spray propeller is characterized by comprising a pump spray propeller rotor (10), wherein the pump spray propeller rotor (10) is arranged at the output end of a transverse transmission shaft (18), a driven bevel gear (20) is arranged at the input end of the transverse transmission shaft (18), the driven bevel gear (20) is driven by a driving bevel gear (21), the driving bevel gear (21) is arranged at the output end of a longitudinal transmission shaft (9), and the input end of the longitudinal transmission shaft (9) is connected with a motor (2) through a coupling; the motor (2) is arranged on the test trolley (3), the test trolley (3) is arranged on the external fixing frame (1), the pre-tightening springs (4) and the pressure sensors (5) are arranged at two ends of the test trolley (3), the pressure sensors (5) are arranged at two sides of the front end inside the external fixing frame (1), and the pre-tightening springs (4) are arranged at two sides of the rear end and pre-tighten the test trolley (3); the pre-tightening spring (4) provides forward pre-tightening force for the test trolley, and the stress direction of the pressure sensor (5) is consistent with the direction of the horizontal transverse force acted on the driving bevel gear (21) by the driven bevel gear (20); and the transverse transmission shaft (18) is also provided with a power instrument (13).
2. The device for testing the water-opening performance of a pump-jet propulsion machine according to claim 1, characterized in that the pump-jet propulsion machine stator is arranged outside the pump-jet propulsion machine rotor (10); the pump jet impeller stator is arranged on one side of the shell (14).
3. The device for testing the water-opening performance of the pump jet propeller according to claim 1, wherein the longitudinal transmission shaft (9) and the transverse transmission shaft (18) are respectively arranged in the longitudinal transmission shaft sleeve (8) and the transverse transmission shaft sleeve (12) through bearings.
4. The device for testing the water opening performance of the pump jet propeller according to claim 2, wherein the pump jet propeller stator comprises a guide pipe (16) and a front guide vane (17), a flange structure is arranged in the center of the front guide vane (17), the flange structure is in fastening connection with the shell (14), and a waterproof gasket is arranged between the shell (14) and the flange structure.
5. The device for testing the water-shedding performance of a pump-jet propulsion system according to any one of claims 2 or 4, wherein the housing (14) and the pump-jet propulsion rotor (10) and the pump-jet propulsion stator are arranged in a water tank.
6. The device for testing the water-opening performance of the pump-jet propeller according to claim 1, further comprising a data acquisition system, wherein the data acquisition system acquires data of the pressure sensor (5) and the power meter (13) during experiments.
7. The device for testing the water opening performance of the pump jet propeller according to claim 1, further comprising a data acquisition system, wherein the test trolley (3) is provided with trolley rollers (6).
8. The device for testing the water-opening performance of the pump-jet propeller according to claim 1, wherein the pretension spring (4) is provided with an adjustable nut.
9. The device for testing the water-opening performance of the pump-jet propeller according to claim 1, wherein a baffle is arranged above the pressure sensor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910257669.1A CN110132599B (en) | 2019-04-01 | 2019-04-01 | Testing device for water-opening performance of pump-jet propeller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910257669.1A CN110132599B (en) | 2019-04-01 | 2019-04-01 | Testing device for water-opening performance of pump-jet propeller |
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| CN110132599A CN110132599A (en) | 2019-08-16 |
| CN110132599B true CN110132599B (en) | 2024-07-12 |
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| CN201910257669.1A Active CN110132599B (en) | 2019-04-01 | 2019-04-01 | Testing device for water-opening performance of pump-jet propeller |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110749416B (en) * | 2019-10-25 | 2022-04-05 | 哈尔滨工程大学 | Electromagnetic type super-cavitation experimental device |
| FI3945014T3 (en) * | 2020-07-30 | 2024-05-29 | Ge Energy Power Conversion Technology Ltd | External loading test apparatus |
| CN114046996A (en) * | 2021-12-06 | 2022-02-15 | 中国空气动力研究与发展中心空天技术研究所 | A thrust test device for underwater thrusters |
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| CN103743557A (en) * | 2014-01-02 | 2014-04-23 | 上海大学 | Comprehensive propeller test system |
| CN107036753A (en) * | 2016-11-30 | 2017-08-11 | 无锡明珠增压器制造有限公司 | Propeller pump dynamograph |
| CN107367396A (en) * | 2016-12-19 | 2017-11-21 | 广东技术师范学院 | A kind of tyre performance test device |
| CN209485688U (en) * | 2019-04-01 | 2019-10-11 | 江苏大学 | A test device for open water performance of pump jet propeller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103604600B (en) * | 2013-12-09 | 2016-02-24 | 上海市东方海事工程技术有限公司 | Strain-type propeller electric test dynamometer |
| CN104332091B (en) * | 2014-11-20 | 2016-06-08 | 江苏科技大学 | The simple experimental device of pump hydraulic propeller |
| CN104596692B (en) * | 2014-12-26 | 2017-04-26 | 浙江海洋学院 | Small-size boats and ships screw thrust measuring device |
| CN106768554B (en) * | 2016-12-29 | 2023-03-07 | 合肥工业大学 | A diving thrust measuring device |
| CN107972837A (en) * | 2017-12-12 | 2018-05-01 | 裴睿涛 | Combined type pump-jet propulsor |
| CN108279084B (en) * | 2018-03-14 | 2022-04-12 | 中国海洋大学 | An underwater propeller test device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743557A (en) * | 2014-01-02 | 2014-04-23 | 上海大学 | Comprehensive propeller test system |
| CN107036753A (en) * | 2016-11-30 | 2017-08-11 | 无锡明珠增压器制造有限公司 | Propeller pump dynamograph |
| CN107367396A (en) * | 2016-12-19 | 2017-11-21 | 广东技术师范学院 | A kind of tyre performance test device |
| CN209485688U (en) * | 2019-04-01 | 2019-10-11 | 江苏大学 | A test device for open water performance of pump jet propeller |
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