CN210738729U

CN210738729U - Lateral support type piezoelectric wave energy conversion device for bridge pier

Info

Publication number: CN210738729U
Application number: CN201921662427.2U
Authority: CN
Inventors: 张惠
Original assignee: Zhejiang Ocean University ZJOU
Current assignee: Zhejiang Ocean University ZJOU
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-06-12
Anticipated expiration: 2029-09-30

Abstract

The utility model provides a side direction support formula piezoelectric type wave energy conversion equipment for pier, including the buoyancy sleeve of cover external to pier, cover the showy body of cover external to buoyancy sleeve, buoyancy sleeve surface is equipped with multilayer piezoelectric film, and both ends are equipped with the radial arch of pier about the buoyancy sleeve, and this arch is towards the showy body, is equipped with the fixed bolster of a plurality of buoyancy balls and a plurality of fixed buoyancy balls between buoyancy sleeve internal surface and the pier surface, and the fixed bolster is equipped with multilayer piezoelectric film with buoyancy sleeve internal surface junction, and piezoelectric film passes through the wire and is connected with rechargeable battery or light or warning device; compared with the prior art, the utility model relates to a side direction supports formula piezoelectric type wave energy conversion device wave energy conversion rate height, simple structure, environmental suitability nature strong, with low costs for pier.

Description

Lateral support type piezoelectric wave energy conversion device for bridge pier

Technical Field

The utility model relates to a wave energy technical field specifically is a side direction support formula piezoelectricity type wave energy conversion equipment for pier.

Background

Wave energy conversion devices are commonly used to convert the kinetic energy generated by the various motions of the ocean waves into electrical energy. Currently, the commonly used wave energy conversion devices are classified into shore, offshore and open sea wave energy conversion devices according to installation positions. The shore-based wave energy conversion device has a simple structure, but the energy conversion efficiency is low due to more silt, such as a limset wave energy conversion device; the offshore wave energy conversion devices are mostly immersion wave energy conversion devices, the cost is low, but the captured energy can change along with the change of sea surface height due to installation on the sea bottom, and the marine ecology is influenced, such as an Oyster wave energy conversion device in England; most of the offshore Wave energy conversion devices are floating Wave energy conversion devices, can obtain more energy, but need high-performance mooring devices, and meanwhile, the self-protection capability in extreme climatic environments is high in requirement and high in cost, such as Wave drag Wave energy conversion devices in the United kingdom.

The piezoelectric power generation device has the advantages of being large in energy density, free of electromagnetic interference, easy to process, convenient to achieve miniaturization and integration and the like, and has a very wide application prospect. Among the prior art, it is rare to be applied to wave energy conversion equipment with piezoelectric material, and utility model patent application No. CN207010576U discloses a novel piezoelectric power generation device who utilizes wave energy, extrudees the piezoceramics piece and generates electricity through the spring of utilizing to be connected with the cylinder pole, is applicable to underwater ocean current, and the installation is comparatively complicated. Compared with ocean current, the water surface wave energy contains higher energy and generates more electric energy, but few water surface wave energy conversion devices exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the weak point that above-mentioned prior art exists, provide a wave energy conversion equipment that wave energy conversion efficiency is high, simple structure, environmental suitability is strong and with low costs.

The utility model provides a side direction support formula piezoelectric type wave energy conversion equipment for pier, put the buoyancy sleeve outside the pier including the cover, the showy body of cover outside the buoyancy sleeve, wherein, buoyancy sleeve surface is equipped with multilayer piezoelectric film, both ends are equipped with the radial arch of pier about the buoyancy sleeve, this arch floats the body towards, be used for preventing to float the body and drop from the buoyancy sleeve, be equipped with the fixed bolster of a plurality of buoyancy balls and a plurality of fixed buoyancy ball between buoyancy sleeve internal surface and the pier surface, fixed bolster and buoyancy sleeve internal surface junction are equipped with multilayer piezoelectric film, piezoelectric film passes through the wire and is connected with rechargeable battery or light or warning device.

Compared with the prior art, this application side direction supports formula piezoelectricity type wave energy conversion equipment has following advantage:

(1) compared with ocean current under water, the wave energy conversion device can float on the water surface by adopting the buoyancy sleeve and the floating body, and the wave energy basic energy is higher;

(2) because the wave height of the seaside is high and low, the conversion of wave energy is influenced to a certain extent, and the piezoelectric film is arranged on the outer surface of the buoyancy sleeve, and the upper end and the lower end of the buoyancy sleeve are provided with the bulges, so that the floating body can be limited to move in the range of the buoyancy sleeve, and the floating body always impacts the buoyancy sleeve, and the environmental adaptability is strong;

(3) the multi-layer piezoelectric film is arranged on the outer surface of the buoyancy sleeve, so that kinetic energy generated when the floating body impacts the piezoelectric film can be converted into electric energy more, and the energy conversion efficiency is higher;

(4) the buoyancy ball is arranged between the inner surface of the buoyancy sleeve and the outer surface of the pier, the buoyancy ball absorbs the impact energy of the buoyancy sleeve to the pier, the damage of the buoyancy sleeve to the pier is reduced, and on the other hand, the buoyancy ball extrudes the multiple layers of piezoelectric films on the inner surface of the buoyancy sleeve, so that the wave energy conversion efficiency is further improved;

(5) the piezoelectric film transmits the converted electric energy to the outside through a lead, so that a battery can be charged, and an illuminating lamp or a warning device can work;

(6) the wave energy conversion device mainly adopts the buoyancy sleeve, the floating body and the conductive film, is simple in structure, low in material requirement and low in cost, and is suitable for being used on a large scale.

Furthermore, the shape of the floating body can be annular or in other shapes, the inner structure can be a cavity or other structures capable of floating on water, the materials are rubber or other materials, and the axial section of the pier is circular or in other shapes.

Further, the height of the protrusions at the upper end and the lower end of the buoyancy sleeve is larger than twice of the distance from the floating body to the piezoelectric film on the outer surface of the buoyancy sleeve, so that when one side of the floating body is in contact with the piezoelectric film on the outer surface of one side of the buoyancy sleeve, the other side of the floating body falls off from the other side of the buoyancy sleeve, and the stability of the wave energy conversion device is improved.

Furthermore, a plurality of piezoelectric elements are arranged in the piezoelectric film, the multiple piezoelectric films and the piezoelectric elements on each piezoelectric film can further convert kinetic energy into electric energy when the floating body and the buoyancy ball impact the piezoelectric film, and the energy conversion efficiency is higher.

Furthermore, the piezoelectric film is provided with a signal electrode and a grounding electrode, the signal electrode is connected with the lead, and the grounding electrode is connected with the bridge pier.

Further, the fixing support is fixed on the inner surface of the buoyancy sleeve through the fastening screw, and the stability of the fixing support is enhanced.

Furthermore, the plurality of buoyancy balls are uniformly arranged in the circumferential direction and the axial direction of the inner surface of the buoyancy sleeve, so that the stress on the outer surface of the pier is more dispersed, each section of piezoelectric film on the inner surface of the buoyancy sleeve can be extruded, and the wave energy conversion efficiency is further improved; in addition, the buoyancy sleeve can slide on the outer surface of the pier through a plurality of buoyancy balls, and rigid impact on the pier can be further reduced.

Furthermore, the buoyancy balls are elastic hollow spheres, the height of the buoyancy sleeves exposed out of the horizontal plane can be adjusted by increasing or reducing the number of the buoyancy balls, and the flexibility is higher.

Still further, the piezoelectric wave energy conversion device can be used for other underwater buildings or shore buildings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic side perspective view of a side-supported piezoelectric wave energy conversion device for a pier 1 in an embodiment;

fig. 2 is a schematic top view of a side support type piezoelectric wave energy conversion device for a pier 1 in an embodiment;

the device comprises a bridge pier, a buoyancy sleeve, a boss, a fixing support, a fastening screw, a ring-shaped floating body, a piezoelectric film, a signal electrode, a grounding electrode, a buoyancy ball, a wire and a piezoelectric film, wherein the bridge pier comprises 1, 2, the buoyancy sleeve, 21, the boss, 22, the fixing support, 23, the fastening screw, 3, the ring-shaped floating body, 4, the.

Detailed Description

For further understanding of the present invention, preferred embodiments of the present invention will be described below with reference to examples, but it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the claims of the present invention.

In the present invention, the terms "outer surface", "inner surface", "axial direction", "radial direction", "circumferential direction", "upper end", "lower end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used only for explaining the relative positional relationship between the respective members or components, and the specific mounting orientation of the respective members or components is not particularly limited.

The terms "nested", "provided" and "connected" are to be understood in a broad sense. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection; may be directly connected, or indirectly connected through intervening media, or may be in communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model provides a side direction support formula piezoelectric type wave energy conversion equipment for pier 1, as shown in fig. 1, 2, including the buoyancy sleeve 2 of cover putting outside pier 1, the annular floats body 3 of cover putting outside buoyancy sleeve 2, wherein, buoyancy sleeve 2 surface is equipped with five layers of piezoelectric film 4, both ends are equipped with the radial arch 21 of pier 1 about buoyancy sleeve 2, this arch 21 is towards annular floats body 3, be used for preventing that annular floats body 3 from droing from buoyancy sleeve 2, the height of arch 21 is b, annular floats body 3 and 2 surface's of buoyancy sleeve piezoelectric film 4's distance for k, b > 2 k.

32 buoyancy balls 5 are arranged between the inner surface of the buoyancy sleeve 2 and the outer surface of the pier 1, the buoyancy balls 5 are elastic hollow spheres, two layers of buoyancy balls 5 in the axial direction of the pier 1 are arranged on the inner surface of the buoyancy sleeve 2, and 16 buoyancy balls 5 in the axial direction of the inner surface of each layer of buoyancy sleeve 2 are uniformly arranged around the inner surface of the buoyancy sleeve 2 in the circumferential direction.

Every buoyancy ball 5 is fixed by fixed bolster 22 on the 2 internal surfaces of buoyancy sleeve, and fixed bolster 22 is equipped with five layers of piezoelectric film 4 with 2 internal surface junctions of buoyancy sleeve, and 2 internal surfaces of buoyancy sleeve need not be covered with the piezoelectric film 4 of 2 internal surfaces of buoyancy sleeve, only need fixed bolster 22 with 2 internal surface junctions of buoyancy sleeve lay can, save piezoelectric film's quantity, fixed bolster 22 passes through fastening screw 23 to be fixed on 2 internal surfaces of buoyancy sleeve.

The piezoelectric film 4 is connected with a rechargeable battery or a lighting lamp or a warning device through a lead 6.

The piezoelectric film 4 is provided with a signal electrode 41 and a ground electrode 42, the signal electrode 41 is connected to the lead 6, and the ground electrode 42 is connected to the pier 1.

The working process of the lateral support type piezoelectric wave energy conversion device of the embodiment is as follows: when waves come, the buoyancy sleeve 2 moves in the axial direction and the radial direction of the pier 1, and as the buoyancy sleeve 2 is sleeved outside the pier 1, a certain direction of buoyancy ball 5 on the inner surface of the buoyancy sleeve 2 at the moment can impact the outer side of the pier 1, the buoyancy ball 5 is acted by the outer side of the pier 1 to further squeeze the piezoelectric film 4 on the inner side of the buoyancy sleeve 2, the piezoelectric film 4 is stressed and deformed to generate voltage, and the rechargeable battery is charged or an illuminating lamp and a warning device are lightened through the lead 6; the buoyancy ball 5 can enable the buoyancy sleeve 2 to slide on the outer surface of the pier 1, so that the rigid impact on the pier 1 is reduced, and the structure of the pier 1 is prevented from being damaged; when waves change, the buoyancy ball 5 in the other direction on the inner surface of the buoyancy sleeve 2 can also impact the outer side of the pier 1 to convert the wave energy into electric energy; meanwhile, the annular floating body 3 also moves in the axial direction and the radial direction of the pier 1, at the moment, the inner surface of the annular floating body 3 can impact the piezoelectric film 4 on the outer surface of the buoyancy sleeve 2, the piezoelectric film 4 deforms under stress to generate voltage, and the rechargeable battery is charged through the lead 6 or the illuminating lamp and the warning device are lightened; moreover, when one side of the inner surface of the annular floating body 3 is in contact with the piezoelectric film 4 on one side of the outer surface of the buoyancy sleeve 2, the distance from the other side of the annular floating body 3 to the piezoelectric film 4 on the outer surface of the buoyancy sleeve 2 does not exceed the height b of the protrusion 21, and the stability of the wave energy conversion device is further improved.

Claims

1. The utility model provides a side direction support formula piezoelectric type wave energy conversion equipment for pier, puts the outer buoyancy sleeve of pier, the showy body of cover outside the buoyancy sleeve including the cover, its characterized in that, buoyancy sleeve surface is equipped with multilayer piezoelectric film, both ends are equipped with the radial arch of pier about the buoyancy sleeve, and this arch is showy body towards, be equipped with the fixed bolster of a plurality of buoyancy balls and a plurality of fixed buoyancy ball between buoyancy sleeve internal surface and the pier surface, fixed bolster and buoyancy sleeve internal surface junction are equipped with multilayer piezoelectric film, piezoelectric film passes through the wire and is connected with rechargeable battery or light or warning device.

2. A lateral support type piezoelectric wave energy conversion device for piers according to claim 1, wherein the floating body is annular or other shapes, the inner structure is a cavity or other structures capable of floating on water, the material is rubber or other materials, and the axial section of the pier is circular or other shapes.

3. The lateral support type piezoelectric wave energy conversion device for the pier according to claim 1, wherein the height of the protrusions at the upper end and the lower end of the buoyancy sleeve is more than twice of the distance from the floating body to the piezoelectric film on the outer surface of the buoyancy sleeve.

4. A lateral support piezoelectric wave energy conversion device for a pier according to claim 1, wherein a plurality of piezoelectric elements are provided in the piezoelectric film.

5. A lateral support type piezoelectric wave energy conversion device for piers according to claim 1, wherein the piezoelectric film is provided with a signal electrode and a ground electrode, the signal electrode is connected with a lead, and the ground electrode is connected with the piers.

6. A laterally supported piezoelectric wave energy conversion device for a pier according to claim 1, wherein the fixing bracket is fixed to an inner surface of the buoyant sleeve by a fastening screw.

7. A laterally supported piezoelectric wave energy conversion device for piers according to claim 1, wherein a plurality of said buoyancy balls are circumferentially and axially arranged on an inner surface of a buoyancy sleeve, and the buoyancy sleeve is slidable on an outer surface of the pier by the plurality of buoyancy balls.

8. A laterally supported piezoelectric wave energy conversion device for piers according to claim 1, wherein the buoyancy balls are elastic hollow spheres, and the height of the buoyancy sleeves exposed to the horizontal plane can be adjusted by increasing or decreasing the number of the buoyancy balls.

9. A laterally supported piezoelectric wave energy conversion device for piers according to claim 1, wherein the piezoelectric wave energy conversion device can be used for other underwater buildings or shore buildings.