CN104234921A - Vibration float type wave energy device - Google Patents

Abstract

The invention belongs to the field of a novel renewable energy technology and marine equipment and particularly relates to a vibration float type wave energy device. The vibration float type wave energy device comprises a generation cabin, floats, an upright, a connecting rod, a rotating shaft, a gear box and a generator and is characterized by being integrally arranged on a sea-floor foundation by the upright, wherein the generation cabin is arranged above the upright; the gear box, a transmission rack and the generator are arranged in the generation cabin; the transmission rack in the generation cabin is connected with the floats by the external connecting rod; the external connecting rod can rotate around the rotating shaft fixed inside the generation cabin; one end of the transmission rack is connected with the external connecting rod and is engaged and connected with an input rotating shaft of the gear box. The design of the invention adopts the design of the vibration float type wave energy device with a plurality of floats; the vibration float type wave energy device can be suitable for incoming waves from each direction, adopts a simple generation principle and has stable efficiency; the generator is arranged inside a device main body, so that safety is high; the device is integrated, adopts a simple form and is convenient to manufacture and install.

Description

A vibrating float type wave energy device

technical field

The invention belongs to the field of novel renewable energy technology and marine equipment, in particular to a vibrating float type wave energy device.

Background technique

With the development of the world economy, the increase of population, and the continuous improvement of social living standards, the demand for energy in various countries is growing rapidly. In recent years, driven by the depletion of fossil energy, energy supply security, and environmental protection, ocean energy, one of the major renewable energy sources, has made great progress, and ocean energy application technologies have become increasingly mature, providing human beings with the opportunity to make full use of ocean energy in the 21st century. A bright future is shown.

At present, the main wave energy devices in the world can be divided into three categories according to their location distribution: offshore type (more than 2.5Km offshore), near-shore type and shore-based type. Among them, near-shore wave energy devices have been extensively studied due to their ease of installation and maintenance, and low construction costs. At the same time, the wave energy density in the area where it is located is relatively high, and it is not easily affected by severe weather such as typhoons. In recent years, such wave energy devices have been greatly developed. However, considering the special physical and chemical properties of seawater, the randomness of waves and its huge destructive power under extreme weather, engineers have to focus on the stability and safety of the device for wave power generation devices installed in the sea. While ensuring that the wave energy conversion device can adapt to different weather conditions, it is necessary to examine the survival strategy and survivability of the design under extreme weather conditions.

Contents of the invention

The technical problem to be solved by the present invention is: to overcome the low stability and poor safety of the above-mentioned existing wave energy technology, and provide a vibrating float type wave energy device, which can utilize the change of sea surface water level with wave transmission to efficiently Converting wave energy into electrical energy is suitable for offshore areas and provides power for offshore facilities such as marine beacon lights and observation stations. It is also easy to directly generate electricity and connect to the Internet. At the same time, it has high reliability and is easy to manufacture and install.

The technical solution adopted by the present invention to solve its technical problems is:

A vibrating buoy type wave energy device, including a power generation cabin, a float, a column, a connecting rod, a rotating shaft, a gearbox and a generator, is characterized in that: the whole device is placed on the seabed foundation through a column; the power generation cabin is installed above the column, and the power generation cabin The gear box, transmission rack and generator are installed inside; the transmission rack in the generator compartment is connected with the float through an external link, and the external link can rotate around the rotating shaft fixed inside the generator compartment; one end of the transmission rack is connected to the external link connected, and engaged with the input shaft of the gearbox.

The above-mentioned vibrating float type wave energy device is characterized in that: the external connecting rod and the float are hingedly connected, and the external connecting rod and the transmission rack are also hingedly connected.

The above-mentioned vibrating buoy type wave energy device is characterized in that: a set of clockwise ratchet mechanisms and a set of counterclockwise ratchet mechanisms are installed in the gear box.

The wave energy device is directly secured on the seabed foundation through the column, and is suitable for offshore waters. The main part of the device can be prefabricated on the shore, dragged to the designated position by barge, and submerged in the water for installation. The device mainly uses the change of water surface elevation caused by waves, which has nothing to do with the direction of incoming waves. It is a point-absorbing wave energy device. The number of its buoys can also be reasonably increased to improve the capture efficiency of wave energy. When the wind and wave conditions are severe, the float can be easily removed and transported away to ensure the safety of the device.

When there is no wave action, the buoyancy and gravity of the float reach a balance state, and the float stands still. When the wave is transmitted to the wave energy device, the float will move up and down with the change of the water surface elevation, and then drive the connecting rod and the transmission rack to reciprocate around the rotating shaft. When the wave crest passes the position of the float, under the joint action of dynamic water pressure and hydrostatic pressure, the balance of the force on the float is broken, and the float accelerates to move upward, pulling the external connecting rod to rotate clockwise. When the external connecting rod rotates, it drives the transmission rack to move in the horizontal direction through the hinge point, and pushes the transmission rack to move to the right. The movement of the transmission rack drives the input shaft of the gearbox to rotate at the same time, and is transmitted to the generator through the gearbox. The generator spins to produce electricity. When the wave crest continues to pass forward, the float starts to accelerate downward as the water surface elevation at its location drops, and then drives the drive rack to accelerate to the left through the connecting rod until the float is at the trough position, and the drive rack moves to the left during this process , and also drives the input shaft of the gearbox to rotate, the direction of rotation is opposite to that of the previous process, and the generator is driven to generate electricity through the transmission of the gearbox. Therefore, the transmission rack enters a reciprocating cycle with the action of the wave, the rack continuously drives the input shaft of the gearbox to rotate, and the gearbox is transmitted to the generator to make the generator work and output power. The clockwise ratchet mechanism and the counterclockwise ratchet mechanism in the gearbox can ensure that no matter what the rotation direction of the input shaft is, the rotation direction of the generator shaft remains unchanged. This setting improves the stability and service life of the power generation device.

The beneficial effects of the present invention are:

The present invention is suitable for offshore areas with relatively abundant wave energy resources, and adopts the design of a vibrating float type wave energy device with multiple floats, which can adapt to incoming waves from various directions; its power generation principle is simple and its efficiency is stable; the power generation device is installed inside the main body of the device , high safety; the overall device is simple in form and easy to manufacture and install.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a sectional view of the internal structure of the gear box of the present invention.

Fig. 3 is a schematic diagram of the deployment of the present invention in the offshore.

In the figure, 1-generator cabin, 2-float, 3-column, 4-external connecting rod, 5-free water surface, 6-sea bottom, 7-outer hinge point, 8-gearbox input shaft, 9-inner hinge point, 10-rotating shaft, 11-transmission rack, 12-clockwise ratchet mechanism, 13-counterclockwise ratchet mechanism, 14-generator rotating shaft, 15-generator.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Example 1:

As shown in Figure 1, the device as a whole is placed on the seabed foundation 6 through the column 3; the power generation cabin 1 is installed above the column 3, and the gear box, the transmission rack 11 and the generator 15 are installed in the power generation cabin 1; the transmission gear in the power generation cabin 1 The bar 11 is connected with the float 2 through the external connecting rod 4, and the external connecting rod 4 can rotate around the rotating shaft 10 fixed inside the generator cabin 1; one end of the transmission rack 11 is connected with the external connecting rod 4, and engages with the input rotating shaft 8 of the gearbox Connection; the external connecting rod 4 is connected with the hinge 7 between the float 2, and the external connecting rod 4 and the transmission rack 11 are also connected with the hinge 9.

As shown in FIG. 2 , a set of clockwise ratchet mechanisms 12 and a set of counterclockwise ratchet mechanisms 13 are installed in the gearbox; the ratchet mechanisms in the gearbox are connected to the generator shaft 14 to drive the generator 15 to work.

As shown in Figure 3, several vibrating buoy type wave energy devices can be arranged side by side to form a wave energy farm.

The working principle of this embodiment:

In actual use, when there is no wave action, the buoyancy and gravity of the float 2 reach a balanced state, and the float 2 remains still. When the waves are transmitted to the wave energy device, the float 2 will move up and down with the change of the water surface elevation, and then drive the connecting rod 4 and the transmission rack 11 to reciprocate around the rotating shaft 10 . When the wave crest passes the position of the float 2, under the action of the hydrodynamic pressure and the hydrostatic pressure, the balance of force on the float 2 is broken, and the float 2 accelerates to move upward, pulling the external connecting rod 4 to rotate clockwise. When the external connecting rod 4 rotates, it drives the transmission rack 11 to move horizontally to the right through the hinge point 9, and the movement of the transmission rack 11 simultaneously drives the input shaft 8 of the gearbox to rotate, and is transmitted to the generator 15 through the gearbox. The generator 15 rotates to generate electricity. When the wave crest continues to pass forward, the float 2 starts to accelerate downward as the water surface elevation at its position drops, and then drives the transmission rack 11 to accelerate to the left through the connecting rod 4 until the float 2 is at the valley position. Bar 11 moves to the left, also drives gear box input rotating shaft 8 to rotate, and the direction of rotation is opposite with last process, drives generator 15 work to generate electricity by gear box transmission. Thus, the transmission rack 11 enters a cycle of reciprocating motion with the action of the wave, the rack 11 continuously drives the input shaft 8 of the gearbox to rotate, and the gearbox is transmitted to the generator 15 to make the generator 15 work and output power. The clockwise ratchet mechanism 12 and the counterclockwise ratchet mechanism 13 in the gearbox can ensure that no matter what the rotation direction of the input shaft 8 is, the rotation direction of the rotation shaft 14 of the generator 15 is unchanged, and this setting improves the stability of the power generation device and service life.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above specific embodiments, which are only illustrative and not restrictive.

Claims (3)

1. A vibrating buoy type wave energy device, comprising a power generation cabin, a float, a column, a connecting rod, a rotating shaft, a gear box and a generator, is characterized in that: the device as a whole is placed on the seabed foundation through a column; the power generation cabin is installed above the column, The gear box, transmission rack and generator are installed in the power generation cabin; the transmission rack in the power generation cabin is connected with the float through an external connecting rod, and the external connecting rod can rotate around the rotating shaft fixed inside the power generation cabin; one end of the transmission rack is connected to the external The connecting rod is connected, and is engaged with the input shaft of the gearbox. 2. The vibrating buoy type wave energy device according to claim 1, characterized in that: the external connecting rod and the buoy are hingedly connected, and the external connecting rod and the transmission rack are also hingedly connected. 3. The vibrating buoy type wave energy device according to claim 1, characterized in that: a set of clockwise ratchet mechanisms and a set of counterclockwise ratchet mechanisms are installed in the gear box.