CN114852280B - Propulsion performance testing device of swing wing plate in wave - Google Patents

Abstract

The invention discloses a propulsion performance test device of a swing wing plate in waves, which relates to the field of ship and marine engineering test, and comprises a water tank, a vertical excitation module, a module fixing device, an underwater follower and a rotating slip ring. Wherein, the vertical excitation module is fixed above the water tank through the module fixing device, the vertical excitation module is connected with the underwater follower through the rotating slip ring, and the underwater The follower part includes a hydrofoil and an angular velocity sensor. The vertical excitation module can apply vertical excitation to the underwater follower part, thereby driving the hydrofoil to swing up and down. The present invention uses a pair of antisymmetrically arranged swing The wing plate replaces the complete underwater propulsion mechanism model. In the test, the pros and cons of the propulsion performance of the swinging wing plate are directly converted into the magnitude of the rotational angular velocity of the wing plate, which simplifies the experimental device, saves a lot of time, is simple and easy to operate, and the test results are intuitive Reliable, and the cost of the experimental site is low.

Description

A device for testing propulsion performance of a swing wing in waves

technical field

The invention relates to the field of ship and ocean engineering experiments, in particular to a device for testing the propulsion performance of a swing wing plate in waves.

Background technique

Since the 21st century, in order to promote the exploration and development of marine resources, many wave energy-driven unmanned ships have emerged, such as wave gliders and Autonaut unmanned ships. Converted to propulsion for unmanned ships. As one of the typical representatives, the wave glider consists of three parts: a floating body on the water surface, an underwater tractor, and an umbilical cable connecting the two. The floating body on the water surface provides buoyancy and provides energy for communication, control and data collection by installing solar panels; the wing plate of the underwater tractor is vertically excited by the ups and downs of the waves to swing up and down to generate forward driving force.

At present, the research on the propulsion performance of the underwater tractor of the wave glider mainly relies on the test of the water pool or the water tank. The test needs to be carried out in a pool or tank that meets the scale requirements of the simulation test, and each test needs to completely install all the wings, springs and other components of the underwater tractor and repeat the debugging. The motion state of the wave environment requires a matching wave environment simulation device. It can be seen that the complete simulation test of the wave glider requires a lot of equipment and complex structure; at the same time, it has high requirements on the site scale and high cost; when the existing test equipment is used to study the propulsion performance of the wave-powered unmanned ship's swing wing, It is necessary to study a complete underwater propulsion mechanism. There are many parts such as wings and springs, and the installation is complicated and time-consuming. At the same time, the requirements for site scale and measurement equipment installation are very high. The test steps are cumbersome, inefficient, and expensive.

Therefore, when studying the propulsion performance of elastic hydrofoils, in order to overcome the above drawbacks, those skilled in the art are committed to developing a test device for the propulsion performance of the swinging wing in waves, which greatly simplifies the equipment required for the experiment and saves time and effort. cost, and easy to operate.

Contents of the invention

In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is how to simplify the test device for the propulsion performance of the wave glider swing wing.

In order to achieve the above object, the present invention provides a device for testing the propulsion performance of a swing wing in waves, which is characterized in that it includes a water tank, a vertical excitation module, a module fixing device, an underwater follower and a rotating slip ring , wherein, the vertical excitation module is fixed above the water tank through the module fixing device, the vertical excitation module is connected with the underwater follower through the rotating slip ring, and the underwater The lower follower includes a hydrofoil and an angular velocity sensor, and the vertical excitation module can apply vertical excitation to the underwater follower, thereby driving the hydrofoil to swing up and down.

Further, the module fixing device includes two beams and a fixed backing plate, the two beams are fixed above the water tank, and the fixing backing plate is connected to the two beams by bolts.

Further, the vertical excitation module is installed on the fixed backing plate through bolts.

Further, the underwater follow-up part further includes a main frame, the main frame is connected with the rotating slip ring, and the angular velocity sensor is installed at an end of the main frame.

Further, the underwater follow-up part further includes a rotating shaft, the rotating shaft includes a fixed shaft and a follower shaft, and one end of the fixed shaft is vertically fixed to one side of the main frame.

Further, the underwater follower part also includes a spring, the spring is connected with the main frame and the follower shaft, and the follower shaft is connected with the spring to form an angle control for adjusting the attitude of the hydrofoil. device.

Further, the hydrofoil is anti-symmetrically arranged at both ends of the main frame through the fixed shaft, the follower shaft and the spring.

Further, there are two hydrofoils.

Further, the lower part of the vertical excitation module is connected with the rotary slip ring through bolts.

Further, the lower part of the rotating slip ring is connected with the underwater follow-up part through a hinge mechanism.

In the present invention, a pair of antisymmetrically arranged hydrofoil swing plates are used to replace the complete underwater propulsion mechanism model, and the propelling performance of the swing plate is directly converted into the magnitude of the rotational angular velocity of the wing plates in the test, which simplifies the experimental device. When the vertical excitation module applies vertical excitation, the two hydrofoils are forced to swing up and down to generate forward propulsion, and form a couple of forces around the central connection point to rotate. The higher the propulsion generated, the faster the rotational angular velocity , thus revealing the propulsion performance of the swing wing in waves. The size of the propulsion force of the swing vane can be directly characterized by the magnitude of the rotational angular velocity. The research on the propulsion performance of the swing vane of the underwater propulsion mechanism does not need to use a complete underwater structure, which saves a lot of time and is easy to operate. The test results It is intuitive and reliable, and the cost of the experimental site is low.

The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

Description of drawings

Fig. 1 is an overall schematic diagram of a propulsion performance testing device of a swing wing in waves according to a preferred embodiment of the present invention;

Fig. 2 is a partial schematic diagram of the underwater follower part of a propulsion performance test device of a swinging wing in waves according to a preferred embodiment of the present invention;

Fig. 3 is a top view of the underwater follower part of a test device for propulsion performance of a swing flap in waves according to a preferred embodiment of the present invention;

Among them, 1-water tank, 2-vertical excitation module, 3-module fixing device, 4-underwater follower, 5-rotary slip ring, 41-main frame, 42-hydrofoil, 431-fixed shaft, 432-follower shaft, 44-spring, 45-angular velocity sensor.

Detailed ways

The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of parts is appropriately exaggerated in some places in the drawings.

As shown in Fig. 1, the present invention provides a kind of propulsion performance testing device of swinging wing plate in the wave, and this testing device is made up of following five parts: water tank 1, vertical excitation module 2, module fixing device 3, The underwater follow-up part 4 and the rotating slip ring 5. The vertical excitation module 2 is fixed above the water tank 1 through the module fixing device 3, and its lower part is connected with the rotating slip ring 5 through bolts, and the bottom part of the rotating slip ring 5 is connected with the underwater follower 4 through a hinge mechanism.

Among them, the vertical excitation module 2 can apply vertical excitation to the underwater follower 4 to make it perform simple harmonic motion in the vertical direction, thereby driving the wing to swing up and down.

Among them, the module fixing device 3 includes two beams and a fixed backing plate, the two beams are fixed above the water tank 1, the top of the two beams is connected to the fixed backing plate by bolts, and the vertical excitation module 2 is installed on the fixed backing plate by bolts , and further form a solidly connected whole with the water tank 1 .

Wherein, as shown in FIG. 2 , the underwater follow-up part 4 includes a main frame 41 , a hydrofoil 42 , a rotating shaft, a spring 44 and an angular velocity sensor 45 . The rotating shaft includes a fixed shaft 431 and a follower shaft 432; as shown in Figure 3, the two hydrofoils 42 are arranged antisymmetrically with respect to the main frame 41, and are connected to the main frame 41 through the fixed shaft 431 and the follower shaft 432, Wherein fixed shaft 431 is positioned at the place ahead of follower shaft 432, and one end of fixed shaft 431 is vertically affixed to one side of main frame 41;

The specific use process of this embodiment is as follows:

1. Assemble the test setup.

1.1 Fix the two beams on the water tank, and connect them with the fixed backing plate through bolts above the two beams;

1.2 The vertical excitation module is fixed on the fixed backing plate by bolts. During the test, the vertical excitation module can output vertical excitation to drive the underwater follower to move up and down.

1.3 Connect the vertical excitation module to the rotating slip ring through bolts, and then connect the rotating slip ring to the underwater follower through the hinge mechanism;

1.4 The two hydrofoils are anti-symmetrically arranged at both ends of the main frame through the fixed shaft, the follower shaft and the spring, and the angular velocity sensor is installed at the end of the main frame to form the underwater follower. The angular velocity obtained by the angular velocity sensor during the test The size represents the size of the thrust of the wing plate;

1.5 Fill the tank with water, completely submerge the underwater follower in the water, and control the water depth in the tank to match the vertical movement range of the underwater follower during the test;

2. Specific embodiment one

2.1 Start the test device, and achieve the purpose of simulating a specific wave height and cycle by adjusting the vertical excitation module.

2.2 First select a spring with a certain spring stiffness and install it on the underwater follower, and adjust the hydrofoil and main frame to a horizontal state in still water.

2.3 Conduct a test under a certain working condition (wave height I, period I), and record the data obtained by the angular velocity sensor.

2.4 Replace the spring with a different spring stiffness and repeat steps 2.1-2.3.

2.5 Obtain the rotational angular velocity of the underwater follower with different spring stiffnesses under the specified working conditions through the above tests, and compare their magnitudes to obtain the propulsion performance of the hydrofoil with different spring stiffnesses under the specified working conditions.

3. Specific embodiment two

3.1 Start the test device, and achieve the purpose of simulating a specific wave height and cycle by adjusting the vertical excitation module.

3.2 Install the spring on the underwater follower, and adjust the hydrofoil and main frame to a horizontal state in still water.

3.3 First, carry out the test under working condition I (wave height I, period I), and record the data obtained by the angular velocity sensor.

3.4 Continue to carry out the test under working condition II (wave height II, period II), and repeat steps 3.2-3.3.

3.5 Obtain the rotational angular velocity of the underwater follower under different working conditions under the specified spring stiffness through the above tests, and compare their magnitudes to obtain the difference in the propulsion performance of the hydrofoil.

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (6)

1. A propulsion performance testing device of a swing wing in waves, characterized in that it comprises a water tank, a vertical excitation module, a module fixing device, an underwater follower and a rotating slip ring, wherein the vertical The excitation module is fixed above the water tank through the module fixing device, and the vertical excitation module is connected with the underwater follow-up part through the rotating slip ring; the underwater follow-up part includes hydrofoils , an angular velocity sensor, a main frame, a spring and a rotating shaft, the main frame is connected with the rotating slip ring, the angular velocity sensor is installed at the end of the main frame; the rotating shaft includes a fixed shaft and a follower shaft, One end of the fixed shaft is vertically fixed to one side of the main frame, the spring is connected with the main frame and the follower shaft, and the follower shaft is connected with the spring to adjust the water pressure. The angle controller of the wing attitude; the hydrofoil is anti-symmetrically arranged at the two ends of the main frame through the fixed shaft, the follower shaft and the spring, and the vertical excitation module controls the underwater The follower part applies vertical excitation to drive the hydrofoil to swing up and down. 2. The device for testing the propulsion performance of a swinging wing in waves according to claim 1, wherein the module fixing device comprises two beams and a fixed backing plate, and the two beams are fixed on the Above the water tank, the fixed backing plate is connected with the two beams through bolts. 3 . The propulsion performance testing device of a swing wing in waves according to claim 2 , wherein the vertical excitation module is mounted on the fixed backing plate through the bolts. 4 . 4. The device for testing the propulsion performance of a swinging wing in waves according to claim 3, wherein there are two hydrofoils. 5 . The device for testing the propulsion performance of a swinging wing in waves according to claim 4 , wherein the lower part of the vertical excitation module is connected to the rotating slip ring through the bolts. 5 . 6 . The device for testing propulsion performance of a swinging wing in waves according to claim 5 , wherein the lower part of the rotating slip ring is connected to the underwater follower part through a hinge mechanism. 7 .

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