Hydrodynamic performance testing device for full-revolving propeller and application structure of hydrodynamic performance testing device

Abstract

The utility model discloses a full-revolving propeller hydrodynamic dynamic performance testing device and an application structure thereof, and the full-revolving propeller hydrodynamic dynamic performance testing device comprises a full-revolving propeller model, a revolving motion system, a propeller rotating system, a control system, and a circulating water tank installation rack. The rotary motion system and the propeller rotating system are both arranged on the circulating water tank mounting frame, the rotary motion system and the propeller rotating system are respectively in driving connection with the full-revolving thruster model, and the rotary motion system and the propeller rotating system are respectively connected with the control system. The device is suitable for a large-scale circulating water tank, can respectively control the rotation speed of the full-revolving propeller and the rotation speed of the propeller, and synchronously measures the dynamic hydrodynamic performance of the propeller and the whole full-revolving propeller in multiple degrees of freedom in the continuous rotation process of the full-revolving propeller.

Description

Technical Field

[0001] This utility model relates to a hydrodynamic performance testing device for a full-rotation propeller and its application structure, belonging to the field of marine mechanical design technology. Background Technology

[0002] A 360° azimuth thruster can rotate around its axis and generate maximum thrust in any direction. It enables ships to turn in place, move laterally, reverse rapidly, and perform special maneuvers such as steering at low speeds.

[0003] Currently, there is a lack of experimental equipment for testing the dynamic performance of a full-rotation thruster during continuous rotation in a circulating water tank. In other words, the hydrodynamic dynamic performance of a full-rotation thruster cannot be tested in the current model test. The hydrodynamic performance of the thruster in the stationary state and the rotating state is very different. Accurately collecting the hydrodynamic dynamic performance during the rotation process plays a key role in the design of gears, main engine and other components. Summary of the Invention

[0004] The technical problem to be solved by this utility model is: how to test the dynamic performance of a full-rotation thruster during continuous rotation in a circulating water tank.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is to provide a hydrodynamic dynamic performance testing device for a full-rotation thruster, characterized in that it includes a full-rotation thruster model, a rotational motion system, a propeller rotation system, a control system, and a circulating water tank mounting frame. The rotational motion system and the propeller rotation system are both mounted on the circulating water tank mounting frame. The rotational motion system and the propeller rotation system are respectively driven and connected to the full-rotation thruster model, and the rotational motion system and the propeller rotation system are respectively connected to the control system.

[0006] The slewing motion system is equipped with a first thrust-torque power meter for measuring the hydrodynamic performance of the slewing propeller during dynamic motion, and the propeller rotation system is equipped with a second thrust-torque power meter for measuring the hydrodynamic performance of the propeller during dynamic motion. The first and second thrust-torque power meters are respectively connected to the electrical signals of the control system.

[0007] Preferably, the azimuth thruster model includes a propeller and a pod shell, with the propeller rotatably located at the front end of the pod shell, the propeller connected to a propeller rotation system, and the pod shell connected to a azimuth motion system.

[0008] Preferably, the rotary motion system includes a rotary motor, a worm gear, a worm, a rotary drive shaft, and a first thrust torque power meter. The rotary motor is fixed on the circulating water tank mounting bracket. The worm and worm gear are rotatably mounted on the circulating water tank mounting bracket. One end of the worm is connected to the drive end of the rotary motor, and the other end of the worm is matched and connected to the worm gear. The center of the worm gear is connected to one end of the rotary drive shaft, and the other end of the rotary drive shaft is connected to the full-rotation propeller model. The first thrust torque power meter is mounted on the rotary drive shaft.

[0009] Preferably, the rotary motion system further includes a flexible device, which is connected between the first thrust torque power meter and the rotary drive shaft to isolate the force and torque generated by the rotary drive shaft.

[0010] Preferably, the first thrust torque power meter is a watertight wireless power meter used to measure the rotational torque and three-degree-of-freedom component forces of the azimuth thruster model.

[0011] Preferably, the propeller rotation system includes a propeller motor, a T-shaped transmission mechanism, a second thrust torque power meter, and a propeller rotation drive shaft. The propeller motor is fixed on the circulating water tank mounting bracket. The drive end of the propeller motor is connected to the T-shaped transmission mechanism. One end of the T-shaped transmission mechanism passes through the rotary motion system, and the other end of the T-shaped transmission mechanism is located inside the azimuth thruster model. The other end of the T-shaped transmission mechanism is fixedly connected to one end of the propeller rotation drive shaft, and the other end of the propeller rotation drive shaft is connected to the propeller of the azimuth thruster model. The second thrust torque power meter is located on the propeller rotation drive shaft or on the other end of the T-shaped transmission mechanism.

[0012] Preferably, the second thrust torque power meter is a watertight wireless power meter used to measure the rotational torque and three-degree-of-freedom component forces of the propeller.

[0013] Preferably, the control system includes a slewing rate control module, a propeller rotation rate control module, a data acquisition module, and a real-time data analysis module. The slewing rate control module and the propeller rotation rate control module are respectively connected to the slewing motion system and the propeller rotation system. The data acquisition module is connected to the first thrust torque power meter, the second thrust torque power meter, and the real-time data analysis module.

[0014] An application structure for a hydrodynamic performance testing device for a full-rotation thruster is characterized by comprising a hydrodynamic performance testing device for a full-rotation thruster, wherein the circulating water tank mounting frame is fixed on the circulating water tank test section, and the full-rotation thruster model is set inside the circulating water tank test section.

[0015] Preferably, the azimuth thruster model is immersed below the free liquid surface, and the distance between the center line of the propeller shaft of the azimuth thruster model and the free liquid surface is greater than twice the diameter of the propeller; the propeller of the azimuth thruster model is located at the center of the circulating water tank test section.

[0016] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0017] Currently, azimuth thruster models cannot achieve simultaneous azimuth thruster rotation when the propeller rotates. This invention solves this problem and precisely controls its rotation rate. This invention can simultaneously measure the overall hydrodynamic performance of the azimuth thruster during rotation, as well as the dynamic hydrodynamic performance of the propeller, and perform real-time data analysis. This invention uses a flexible device to isolate the azimuth thruster and the drive mechanism, avoiding interference from unrelated forces on the test data. This invention is specifically designed for use in circulating water tank test chambers. This invention employs a worm gear structure, which is easy to install, low in cost, and has good stability, making it suitable for model testing.

[0018] The device of this invention is installed in the test section of the circulating water tank. It drives the azimuth thruster to rotate continuously at a variable angular velocity through a motor and gearbox, while simultaneously driving the propeller to rotate at high speed. This simulates the rotation conditions in a real working environment, effectively evaluates the hydrodynamic performance during continuous dynamic rotation, guides the design of gears, main engines, etc., and provides a reliable test and verification method for the application of azimuth thrusters in ships.

[0019] This invention is applicable to large circulating water tanks. It can control the rotation speed of the azimuth thruster and the propeller speed separately, and simultaneously measure the dynamic hydrodynamic performance of the propeller and the entire azimuth thruster in multiple degrees of freedom during continuous rotation. It features a compact structure, strong operability, and stable testing. Attached Figure Description

[0020] Figure 1 A schematic diagram of a hydrodynamic performance testing device for a full-rotation thruster;

[0021] Figure 2 This is a schematic diagram of a full-rotation thruster.

[0022] Figure 3 This is a schematic diagram of the internal transmission of a full-rotation thruster.

[0023] In the diagram: 1. Pod shell; 2. First thrust torque power meter; 3. Flexible device; 4. Rotary drive shaft; 5. Worm gear; 6. Worm; 7. Propeller motor; 8. Rotary motor; 9. Circulating water tank mounting bracket; 10. Control system; 11. Propeller; 12. Propeller drive shaft; 13. Second thrust torque power meter; 14. T-type transmission mechanism;

[0024] A. Free liquid surface; B. Wall of the test section of the circulating water tank; C. Water flow direction. Detailed Implementation

[0025] To make this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0026] This utility model provides a device for testing the hydrodynamic dynamic performance of a full-rotation thruster, such as... Figure 1 As shown, it mainly consists of a full-rotation propeller model, a rotary motion system, a propeller rotation system, a control system 10, and a circulating water tank mounting frame 9.

[0027] The azimuth thruster model consists of a propeller 11 and a pod shell 1. This part is the test object and can be arbitrarily replaced while ensuring that the shaft interfaces are consistent. Figure 2 As shown.

[0028] The rotary motion system mainly consists of a rotary motor 8, a worm gear 5, a worm 6, a rotary drive shaft 4, a flexible device 3, and a first thrust torque power meter 2, such as... Figure 1 As shown. The rotary motor 8 drives a stable, simple, and precisely controlled worm gear structure (composed of a worm wheel 5 and a worm 6) to rotate at a variable angular velocity, typically between 0.25 r / min and 10 r / min. The first thrust torque power meter 2 is a watertight wireless power meter that can measure the rotational torque and three-degree-of-freedom components of the entire azimuth thruster model. The first thrust torque power meter 2 and the rotary drive shaft 4 are connected by a flexible device 3 (in this embodiment, the flexible device 3 is an elastic coupling, and the first thrust torque power meter 2 is connected to the flexible device 3 by a flange) to isolate the forces and torques generated by the upper mechanism, preventing interference with the test data. The lower end of the first thrust torque power meter 2 is connected to the pod shell 1 of the azimuth thruster model, and the upper end of the rotary drive shaft 4 is fixedly connected to the worm wheel 5. The worm wheel 5 is connected to the worm 6, and the worm 6 is connected to the rotary motor 8. Specifically, the rotary motor 8 drives the horizontally positioned worm gear 6 to rotate, thereby causing the worm wheel 5 to rotate horizontally, which in turn causes the rotary drive shaft 4 to rotate, thus realizing the rotation of the full-rotation propeller model.

[0029] The propeller rotation system mainly consists of a propeller motor 7, a T-shaped transmission mechanism 14, a second thrust torque power meter 13, and a propeller rotation drive shaft 12. The propeller motor 7 directly drives the propeller rotation drive shaft 12 via the T-shaped transmission mechanism 14, driving the propeller 11 to rotate at high speed (in this embodiment, the second thrust torque power meter 13 is connected to the propeller rotation drive shaft 12 via a flange). The rotational speed range is generally between 10 r / s and 30 r / s. The second thrust torque power meter 13 is also a watertight wireless power meter, capable of measuring the propeller's rotational torque and three-degree-of-freedom force components.

[0030] Among them, the propeller rotation motor 7 drives the first thrust torque power meter 2, the flexible device 3, and the rotary drive shaft 4 through the first central shaft and then connects to the T-shaped transmission mechanism 14; the pod shell 1 is fixed with a second central shaft, which passes through the T-shaped transmission mechanism 14, the second thrust torque power meter 13, and the propeller rotation drive shaft 12 and then connects to the propeller 11.

[0031] All the above systems are bolted together and mounted on the circulating water tank mounting frame 9. The circulating water tank mounting frame 9 is welded from profiles and fixed to the circulating water tank test section, ensuring the rigidity and stability of the entire model test device and guaranteeing that the distance from the slewing drive shaft 4 to the walls of both test sections is equal (i.e., the propeller of the azimuth thruster model is located at the center of the circulating water tank test section). The azimuth thruster model is immersed in water (i.e., the azimuth thruster model is immersed below the free liquid surface), and the distance from the centerline of the propeller shaft to the free liquid surface is greater than twice the propeller diameter. Therefore, watertight sealing must be considered in the shaft system design.

[0032] The control system 10 includes a slewing rate control module, a propeller rotation rate control module, a data acquisition module (used to collect data from each module, i.e., slewing rate and propeller rotation rate), and a real-time data analysis module. Each module is independent of the others. The slewing rate of the azimuth thruster and the propeller speed can be precisely controlled by two motors (i.e., propeller rotation motor 7 and slewing rotation motor 8). The hydrodynamic performance of the azimuth thruster and propeller during dynamic motion is measured in real time by two thrust torque power meters, and multi-dimensional data synchronous measurement is achieved.

[0033] The operational steps for implementing this utility model are as follows:

[0034] Step 1: Install the rotary motion system, propeller rotation system, and control system 10, and secure them to the circulating water tank mounting bracket 9;

[0035] Step 2: Install the azimuth thruster model, which connects the azimuth motion system and the propeller rotation system;

[0036] Step 3: Install the entire measuring device into the test section of the circulating water tank and adjust the water line position to the design requirements;

[0037] Step 4: First, set the propeller speed and start the propeller motor 7; then set the slewing rate and start the slewing motor 8.

[0038] Step 5: Simultaneously collect thrust torque measurement data from two power instruments (i.e., the first thrust torque power instrument 2 and the second thrust torque power instrument 13) and analyze them in real time.

Claims

1. A device for testing the hydrodynamic dynamic performance of a full-rotation propeller, characterized in that, It includes a full-rotation thruster model, a rotatable motion system, a propeller rotation system, a control system (10), and a circulating water tank mounting frame (9). The rotatable motion system and the propeller rotation system are both mounted on the circulating water tank mounting frame (9). The rotatable motion system and the propeller rotation system drive and connect to the full-rotation thruster model, and the rotatable motion system and the propeller rotation system are connected to the control system. The rotary motion system is equipped with a first thrust torque power meter (2) for measuring the hydrodynamic performance of the azimuth thruster during dynamic motion, and the propeller rotation system is equipped with a second thrust torque power meter (13) for measuring the hydrodynamic performance of the propeller during dynamic motion. The first thrust torque power meter (2) and the second thrust torque power meter (13) are respectively connected to the control system (10) by electrical signals.

2. A kind of full-revolving propeller hydrodynamic dynamic performance testing device according to claim 1, characterized in that, The azimuth thruster model includes a propeller (11) and a pod housing (1). The propeller (11) is rotatably located at the front end of the pod housing (1). The propeller (11) is connected to the propeller rotation system, and the pod housing (1) is connected to the azimuth motion system.

3. A kind of full-revolving propeller hydrodynamic dynamic performance testing device according to claim 1, characterized in that, The rotary motion system includes a rotary motor (8), a worm gear (5), a worm (6), a rotary drive shaft (4), and a first thrust torque power meter (2). The rotary motor (8) is fixed on the circulating water tank mounting bracket (9). The worm (6) and the worm gear (5) are respectively rotatably mounted on the circulating water tank mounting bracket (9). One end of the worm (6) is connected to the drive end of the rotary motor (8), and the other end of the worm (6) is matched and connected to the worm gear (5). The center of the worm gear (5) is connected to one end of the rotary drive shaft (4), and the other end of the rotary drive shaft (4) is connected to the full-rotation propeller model. The first thrust torque power meter (2) is mounted on the rotary drive shaft (4).

4. A kind of full-revolving propeller hydrodynamic dynamic performance testing device according to claim 3, characterized in that, The rotary motion system also includes a flexible device (3), which is a flexible device (3) connected between the first thrust torque power meter (2) and the rotary drive shaft (4) to isolate the force and torque generated by the rotary drive shaft (4).

5. A kind of full-revolving propeller hydrodynamic dynamic performance testing device according to claim 1, characterized in that, The first thrust torque power meter (2) is a watertight wireless power meter used to measure the rotational torque and three-degree-of-freedom component forces of the azimuth thruster model.

6. A kind of full-revolving propeller hydrodynamic dynamic performance testing device according to claim 1, characterized in that, The propeller rotation system includes a propeller motor (7), a T-shaped transmission mechanism (14), a second thrust torque power meter (13), and a propeller rotation drive shaft (12). The propeller motor (7) is fixed on the circulating water tank mounting bracket (9). The drive end of the propeller motor (7) is connected to the T-shaped transmission mechanism (14). One end of the T-shaped transmission mechanism (14) is inserted into the rotary motion system, and the other end of the T-shaped transmission mechanism (14) is located in the azimuth thruster model. The other end of the T-shaped transmission mechanism (14) is fixedly connected to one end of the propeller rotation drive shaft (12), and the other end of the propeller rotation drive shaft (12) is connected to the propeller (11) of the azimuth thruster model. The second thrust torque power meter (13) is located on the propeller rotation drive shaft (12) or on the other end of the T-shaped transmission mechanism (14).

7. A kind of full-revolving propeller hydrodynamic dynamic performance testing device according to claim 1, characterized in that, The second thrust torque power meter (13) is a watertight wireless power meter used to measure the rotational torque and three-degree-of-freedom component force of the propeller.

8. A kind of full-revolving propeller hydrodynamic dynamic performance testing device according to claim 1, characterized in that, The control system (10) includes a slewing rate control module, a propeller rotation rate control module, a data acquisition module, and a real-time data analysis module. The slewing rate control module and the propeller rotation rate control module are respectively connected to the slewing motion system and the propeller rotation system. The data acquisition module is connected to the first thrust torque power meter (2), the second thrust torque power meter (13), and the real-time data analysis module.

9. The application structure of a full-rotary propeller hydrodynamic dynamic performance testing device, characterized in that, The device includes the hydrodynamic performance testing device for a full-rotation thruster as described in any one of claims 1-8, wherein the circulating water tank mounting bracket (9) is fixed on the circulating water tank test section, and the full-rotation thruster model is set inside the circulating water tank test section.

10. The application structure of a full-rotation propeller hydrodynamic dynamic performance testing device according to claim 9, characterized in that, The azimuth thruster model is immersed below the free liquid surface, and the distance between the center line of the propeller shaft of the azimuth thruster model and the free liquid surface is greater than twice the diameter of the propeller; the propeller of the azimuth thruster model is located at the center of the circulating water tank test section.

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