CN202645833U - Center float type wave energy generating device - Google Patents

Abstract

The utility model relates to a central float type wave energy generating device, which is used for generating wave energy and belongs to the technical field of ocean energy utilization. Its structure includes a central large floating body, a connecting body and a plurality of independent oscillating wave energy conversion devices distributed around the central large floating body, and the oscillating wave energy converting devices are connected with the central large floating body through connecting rods and connecting bodies. The central large floating body of the utility model performs heaving motion in waves, and the multiple oscillating wave energy conversion devices around the central large floating body are similar to traditional wave energy absorbing devices and can independently absorb and convert wave energy. When the heave natural frequency of the central large floating body is equal to or close to the frequency of the wave motion, the central large floating body will resonate with the sea water, and the waves will drive the central large floating body to move violently, and the vibration of the central large floating body will be transmitted through the connecting rod. Go to each oscillating wave energy conversion device to amplify its oscillating motion, which has high absorption rate and conversion rate and impact resistance.

Description

Center float type wave energy generating device

technical field

The utility model relates to a wave energy generating device, in particular to a central float type wave energy generating device, which belongs to the field of ocean energy utilization.

Background technique

Ocean energy refers to the energy obtained from the ocean. Today, the ocean covers about 70% of the earth's surface, and the ocean has become the world's largest solar collector and energy storage system. Theoretically, 600,000 square kilometers of tropical ocean absorbs solar radiation every day, which is equivalent to the energy contained in 25 billion barrels of oil. Among all ocean energies, wave energy has the highest energy density, has little impact on the environment during development, and exists in the form of mechanical energy. Therefore, wave energy is the most ideal and most worthwhile ocean energy.

Because wave energy has high energy density, wide distribution, and is an inexhaustible renewable clean energy, in the wave energy around the world, using corresponding technologies can generate about 14-75 billion kWh of energy per year . And with predictable long-term technological improvements, the amount of wave energy available could be doubled or tripled.

At present, there are many types of wave energy utilization devices, and these devices are mainly based on the following basic mechanisms. One is to convert wave energy into mechanical energy by using the heave and swing motion of objects under the action of waves; can be converted into potential energy of water, etc. In general, most wave energy conversion systems are composed of three-stage energy conversion mechanisms. The first-level energy conversion mechanism converts wave energy into mechanical energy of a certain carrier; the second-level energy conversion mechanism converts the energy obtained by the first-level energy conversion into rotating machinery such as hydraulic turbines, air turbines, hydraulic motors, and gear speed-up mechanisms Etc. mechanical energy; three-stage energy conversion converts the mechanical energy of the rotating machinery into the target energy through the generator.

The utilization and development of ocean energy will play a key role in ocean development and coastal defense. However, due to the instability of the waves, the conversion device is often in non-design conditions, and the conversion rate is not ideal. In addition, the corrosion of the conversion device and the adhesion of marine organisms caused by the harsh marine environment may also cause the failure of certain links of the device. For this reason, relevant personnel conduct research on the conversion device, so that it can further improve the conversion efficiency and reliability of the conversion device, which is also the key to the development of wave energy utilization technology.

At present, the main bottleneck that restricts the efficiency of wave energy absorbing devices is that the absorbing device can only absorb local energy, that is, the energy of the area covered by the device, which is a point or a line, and it is difficult to collect the energy of a plane.

Contents of the invention

All the technical problems solved by the utility model are to overcome the shortcomings of low energy absorption rate, unsatisfactory conversion efficiency and poor impact resistance in the wave energy conversion process of the above-mentioned prior art, and provide a wave energy absorber with strong impact resistance, energy absorption and conversion. High-efficiency center-float type wave energy generating device.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is realized in this way. The central float type wave energy generating device includes a large central floating body, a connecting body, and a plurality of independent oscillation type wave energy conversion devices evenly distributed around the central large floating body. The connecting body is arranged on the outer wall of the central large floating body, and the plurality of oscillating wave energy conversion devices are connected with the connecting body through connecting rods.

The oscillating wave energy conversion device consists of a hollow buoy body, a sleeve, a transmission shaft, a speed increaser, an impeller and a generator. The upper end of the transmission shaft is connected to the generator through the speed increaser, and the lower end of the transmission shaft is connected to the impeller. The transmission shaft and impeller are located in the sleeve, and the speed increaser and generator are placed in the hollow buoy body.

The sleeve is provided with a water inlet.

There are multiple water inlets, which are arranged on the side wall of the sleeve.

The speed increaser is composed of a bull gear fixed on the upper end of each transmission shaft and pinions meshing with the bull gear respectively, and each pinion is coaxial with the corresponding generator respectively.

The impeller is composed of two opposite upper and lower blades.

There are four independent oscillating wave energy conversion devices.

The outer wall of the central large floating body is provided with grooves, the connecting body is connected with the central large floating body through the grooves, and the grooves are composed of multiple stages of different heights on the outside of the central large floating body.

The upper center of the central large floating body is provided with lifting lugs.

。 The large central floating body is a hollow cylinder, and the relationship between its radius R and height L is

.

The beneficial effect of the utility model is that the utility model utilizes the oscillation of the central large floating body to amplify the oscillation of the oscillating wave energy conversion device. The central large floating body of the power generation device of the utility model performs heaving motion in waves, and a plurality of oscillating wave energy conversion devices around the central large floating body are similar to traditional wave energy absorbing devices and can independently absorb and convert wave energy. When the heave natural frequency of the central large floating body is equal to or close to the frequency of the wave motion, the central large floating body will resonate with the sea water. At this time, the waves will drive the central large floating body to move violently, and through the connecting rod, the central large floating body can The vibration is transmitted to each oscillating wave energy conversion device, amplifying its oscillating motion, and then strengthening the function of each oscillating wave energy conversion device, which can make full use of wave energy, improve absorption and conversion efficiency, and achieve centralized collection of energy on one surface Effect.

The design of the sleeve structure in the oscillating wave energy conversion device effectively isolates the contact between the conversion device and the ocean, reduces the influence of unfavorable factors such as seaweed on the oscillating wave energy conversion device, and thus improves the service life of the oscillating wave energy conversion device , also improves the overall shock resistance and reliability.

The application of the utility model can provide power for offshore equipment, reduce power transmission facilities, prolong the service life and use efficiency of the equipment, and has broad market prospects and application value. For example, it is a reliable and feasible solution to provide continuous power to offshore buildings such as lighthouses and ocean buoys.

The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

Figure 1: Schematic diagram of the structure of the utility model wave energy generating device.

Figure 2: Schematic diagram of the internal structure of the oscillating wave energy conversion device of the utility model.

Among them, the labels in the figure are explained as follows:

1—central large floating body, 2—groove, 3—hanging lug, 4—connecting body, 5—oscillating wave energy conversion device, 6—hollow buoy body, 7—sleeve, 8— Water inlet, 9--transmission shaft, 10--gearbox, 11--generator, 12-impeller, 13--large gear, 14--pinion, 15--upper blade, 16--lower blade, 17 - connecting rod.

Detailed ways

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the invention, the specific implementation and structure of the center float type wave energy generating device proposed according to the utility model will be described below in conjunction with the accompanying drawings and preferred embodiments. , features and their effects are described in detail below.

As shown in FIG. 1 , the central float type wave energy generating device of the present invention includes a central large floating body 1 , a groove 2 , lifting lugs 3 , a connecting body 4 and an oscillating wave energy conversion device 5 .

The central large floating body 1 is a hollow cylinder structure, and a groove 2 is arranged on the outer periphery of the central large floating body 1. Grooves 2 with different heights connect the connecting body 4 with the central large floating body 1 . Thus, the central large floating body 1 itself has an adjustment function. When in use, according to the wave conditions in the sea area, the connection level between the connecting body 4 and the groove 2 can be adjusted, that is, the connection position between the connecting body 4 and the central large floating body 1 can be adjusted. , to change the draft of the central large floating body 1, so as to change the frequency of the heave motion of the central large floating body 1, so as to ensure that the central large floating body 1 resonates with the waves to absorb wave energy to the greatest extent.

The lifting lug 3 is arranged at the upper center of the central large floating body 1, and is connected to other central large floating bodies 1 through the lifting lug 3 in a large sea area, so as to form a series of device groups to work.

As shown in FIG. 2 , it is a schematic diagram of the internal structure of the oscillatory wave energy conversion device 5 . The multiple oscillating wave energy conversion devices 5 are connected to the connecting body 4 through connecting rods 17 . The figure shows that there are four independent oscillating wave energy conversion devices, and the number of independent oscillating wave energy conversion devices 5 can be selected according to the use environment.

The oscillating wave energy conversion device 5 is composed of a hollow buoy body 6 , a sleeve 7 , a transmission shaft 9 , a speed increaser 10 , a generator 11 and an impeller 12 .

The hollow buoy body 6 is cylindrical, and its lower part is connected with the sleeve 7, and the sleeve 7 is provided with a plurality of water inlets 8.

The upper end of the transmission shaft 9 is connected to the generator 11 via the speed increaser 10 ; the lower end of the transmission shaft 9 is connected to the impeller 12 , and the transmission shaft 9 and the impeller 12 are located in the sleeve 7 . The speed increaser 10 and the generator 11 are located in the upper hollow buoy body 6 .

The impeller 12 is composed of two opposite upper blades 15 and lower blades 16 . When the oscillating wave energy conversion device 5 oscillates upwards, the upper seawater hits the upper blade 15 to make the impeller 12 rotate. When the oscillating wave energy conversion device 5 oscillates downward, the lower blade 16 is rotated when the seawater in the lower part hits it. This way ensures that the drive shaft 9 rotates in the same direction, reduces the resistance when the impeller 12 moves up and down, and can make full use of the wave energy per unit area, effectively improving conversion efficiency.

The speed increaser 10 is composed of a bull gear 13 fixed on the upper end of each transmission shaft 9 and pinion gears 14 meshing with the bull gear 13 respectively, and each pinion gear 14 is coaxial with the corresponding generator 11 respectively.

The hollow buoy body 6 can move up and down with the waves to drive the overall movement of the oscillating wave energy conversion device 5. When seawater enters the sleeve 7 through the water inlet 8 on the sleeve 7, it will move relative to the impeller 12 to drive The impeller 12 rotates, and the impeller 12 drives a pair of meshing bull gear 13 and pinion gear 14 through the transmission shaft 9 to rotate the speed increaser 10 , and then drives the generator 11 to generate electricity through the speed increaser 10 .

的关系满足

时，中心大浮体1易产生共振。 When the power generation device of the utility model is used, the central large floating body 1 performs heaving motion in the waves, and the multiple oscillating wave energy conversion devices 5 around the central large floating body 1 are similar to traditional wave energy absorbing devices, which can independently absorb and Convert wave energy. And when the heave natural frequency of the central large floating body 1 is equal to or close to the frequency of wave motion, the central large floating body 1 resonates with the sea water, and now the waves will drive the central large floating body 1 to move violently. The oscillation of the central large floating body 1 is transmitted to each oscillating wave energy conversion device 5, thereby also amplifying the oscillating motion of each oscillating wave energy conversion device 5, thereby greatly improving the efficiency of converting wave energy into electrical energy, while the central large floating body a radius of 1 and height

relationship satisfaction

, the central large floating body 1 is prone to resonance.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Content, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (10)

1. center float type wave energy generating set, it is characterized in that: comprise the large buoyancy aid in center, connecting body and center on the equally distributed a plurality of independent oscillating type Wave energy converting devices of the large buoyancy aid in center, described connecting body is arranged on the outer side wall of the large buoyancy aid in center, and described each oscillating type Wave energy converting device links to each other with connecting body by connecting rod.

2. center according to claim 1 float type wave energy generating set, it is characterized in that: described oscillating type Wave energy converting device is comprised of hollow pontoon body, sleeve, transmission shaft, speed increaser, impeller and generator, described transmission shaft upper end links to each other with generator by speed increaser, described transmission shaft lower end links to each other with impeller, described transmission shaft and impeller are positioned at sleeve, and described speed increaser and generator place in the hollow pontoon body.

3. center according to claim 2 float type wave energy generating set, it is characterized in that: described sleeve is provided with water inlet.

4. center according to claim 3 float type wave energy generating set, it is characterized in that: described water inlet is a plurality of, is arranged on the sidewall of sleeve.

5. center according to claim 2 float type wave energy generating set, it is characterized in that: described speed increaser is comprised of the gearwheel that is fixed on each transmission shaft upper end and the small gear that is meshed with gearwheel respectively, described each small gear respectively with corresponding generator coaxle.

6. center according to claim 2 float type wave energy generating set, it is characterized in that: described impeller is comprised of two relative up and down blades.

7. center according to claim 1 float type wave energy generating set, it is characterized in that: described oscillating type Wave energy converting device is four.

8. center according to claim 1 float type wave energy generating set, it is characterized in that: the outer side wall of the large buoyancy aid in described center is provided with groove, described connecting body links to each other by the large buoyancy aid in groove and center, and described groove is comprised of the groove of the multistage different heights in the large buoyancy aid outside, center.

9. center according to claim 1 float type wave energy generating set, it is characterized in that: the central upper portion of the large buoyancy aid in described center is provided with hanger.

10. center according to claim 1 float type wave energy generating set, it is characterized in that: the large buoyancy aid in described center is hollow cylinder, its radius R with the pass of height L is

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