CN109139338B - Wave energy absorbing and converting device - Google Patents
Wave energy absorbing and converting device Download PDFInfo
- Publication number
- CN109139338B CN109139338B CN201810936476.4A CN201810936476A CN109139338B CN 109139338 B CN109139338 B CN 109139338B CN 201810936476 A CN201810936476 A CN 201810936476A CN 109139338 B CN109139338 B CN 109139338B
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- wave energy
- hydraulic
- energy absorption
- check valve
- conversion device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Abstract
The invention provides a wave energy absorption and conversion device, which comprises a fixed platform (301), a suspension (302), a wave energy absorption device and a wave energy conversion device, wherein the wave energy absorption device is arranged on the fixed platform; one end of a suspension (302) is mounted on a cross beam of the fixed platform (301), the other end of the suspension (302) is fixedly connected with a wave energy absorption device and a wave energy conversion device, and the wave energy conversion device comprises a wave energy conversion hydraulic energy part and a hydraulic energy conversion electric energy part. The wave energy absorption device periodically moves under the excitation of wave energy, and the wave energy conversion device converts mechanical energy into hydraulic energy and then converts the hydraulic energy into usable electric energy. The invention adopts a form of arranging a plurality of hydraulic cylinders, thereby improving the wave energy capturing and converting efficiency of the system.
Description
Technical Field
The invention relates to a wave energy power generation device in the technical field of new energy equipment, in particular to a wave energy absorption and conversion device, and particularly relates to a multi-degree-of-freedom wave energy absorption and conversion device.
Background
The motion mode of the floating body under the action of waves has six degrees of freedom, including translational motion of surging (Surge), swaying (Sway) and heaving (Heave) and rotational motion of rolling (Roll), pitching (Pitch) and yawing (Yaw). The absorption and conversion of wave energy is realized by converting the mechanical energy part in one or more degrees of freedom motions of the floating body under the action of waves into available hydraulic energy and converting the available hydraulic energy into electric energy which can be transmitted and stored remotely. Most of the existing wave energy absorption and conversion devices can only absorb energy with a single degree of freedom, and a small part of the existing wave energy absorption and conversion devices can absorb energy with two degrees of freedom, but in general, the utilization efficiency of wave energy is lower.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to provide a wave energy absorbing and converting apparatus.
The wave energy absorption and conversion device comprises a fixed platform, a suspension, a wave energy absorption device and a wave energy conversion device; one end of the suspension is mounted on a cross beam of the fixed platform, and the other end of the suspension is fixedly connected with the wave energy absorption device and the wave energy conversion device.
Preferably, the wave energy absorption device comprises a moving platform top, an upper articulated support, an upper universal joint, a hydraulic cylinder, a lower universal joint, a lower articulated support, a moving platform bottom and a floater, wherein the hydraulic cylinder comprises a rod cavity and a rodless cavity; the other end of the suspension is connected to the upper portion of the top of the motion platform, the base of an upper hinged support is connected to the lower portion of the top of the motion platform in a fastening mode, the movable end of the upper hinged support is connected with one end of an upper universal joint in a hinged mode, the other end of the upper universal joint is connected with one end of a hydraulic cylinder, the other end of the hydraulic cylinder is connected with one end of a lower universal joint, the other end of the lower universal joint is connected with the movable end of a lower hinged support in a hinged mode, the base of the lower hinged support is connected with the upper portion of the bottom of the.
Preferably, the wave energy conversion device comprises a wave energy conversion hydraulic energy part and a hydraulic energy conversion electric energy part.
Preferably, the wave energy conversion hydraulic energy part comprises a one-way valve bridge circuit, a high-pressure oil pipeline, a high-pressure energy accumulator, a low-pressure energy accumulator and a low-pressure oil pipeline; the check valve bridge circuit is communicated with the high-pressure energy accumulator through a high-pressure oil pipeline, and the check valve bridge circuit is communicated with the low-pressure energy accumulator through a low-pressure oil pipeline.
Preferably, the check valve bridge comprises a first check valve, a second check valve, a third check valve and a fourth check valve; the outlet of the first one-way valve and the outlet of the third one-way valve form the outlet of a one-way valve bridge circuit, and the inlet of the second one-way valve and the inlet of the fourth one-way valve form the inlet of the one-way valve bridge circuit; the outlet of the one-way valve bridge circuit is communicated with the high-pressure oil pipeline, and the inlet of the one-way valve bridge circuit is communicated with the low-pressure oil pipeline.
Preferably, the hydraulic energy-to-electric energy conversion part comprises a generator and a hydraulic motor; an oil inlet of the hydraulic motor is communicated with a high-pressure energy accumulator of the wave energy conversion hydraulic energy part, an oil outlet of the hydraulic motor is communicated with a low-pressure energy accumulator of the wave energy conversion hydraulic energy part, and the hydraulic motor is coaxially connected with a generator.
Preferably, a rod cavity of the hydraulic cylinder of the wave energy absorption device is respectively communicated with an inlet of the first one-way valve and an outlet of the second one-way valve, and a rodless cavity of the hydraulic cylinder of the wave energy absorption device is respectively communicated with an inlet of the third one-way valve and an outlet of the fourth one-way valve.
Preferably, the one or more suspensions are symmetrically mounted on a cross-beam of the fixed platform.
Preferably, the one or more hydraulic cylinders of the wave energy absorbing device are coupled in parallel in the hydraulic oil circuit of the wave energy converting device.
Preferably, the one or more wave energy absorbing devices are correspondingly mounted on one or more suspensions.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts a form of arranging a plurality of hydraulic cylinders, thereby improving the wave energy capturing and converting efficiency of the system.
2. The invention adopts hydraulic pressure as an energy conversion mode, and is suitable for the characteristics of large thrust and low frequency of wave energy.
3. The invention adopts the high-pressure energy accumulator and the low-pressure energy accumulator, can absorb the pressure fluctuation in the hydraulic system, leads the output to be more stable and improves the stability of the system.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view of the wave energy absorbing device of the present invention.
Fig. 2 is a schematic structural diagram of the wave energy conversion device.
Fig. 3 is a schematic structural diagram of the present invention.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
According to the wave energy absorption and conversion device provided by the invention, wave energy with six degrees of freedom can be utilized and converted, and as shown in fig. 3, the wave energy absorption and conversion device comprises a fixed platform 301 and a suspension 302, and further comprises a wave energy absorption device and a wave energy conversion device; the fixed platform 301 is fixedly installed on the seabed, one end of the suspension 302 is installed on a cross beam of the fixed platform 301, and the other end of the suspension 302 is fixedly connected with the wave energy absorption device and the wave energy conversion device.
As shown in fig. 1, the wave energy absorption device comprises a moving platform top 101, an upper articulated support 102, an upper universal joint 103, a hydraulic cylinder 104, a lower universal joint 105, a lower articulated support 106, a moving platform bottom 107 and a floater 108, wherein the hydraulic cylinder 104 comprises a rod cavity 1 and a rodless cavity 2; the other end of the suspension 302 is connected to the upper portion of the top 101 of the moving platform, the lower portion of the top 101 of the moving platform is fixedly connected with the base of the upper articulated support 102, the movable end of the upper articulated support 102 is connected with one end of the upper universal joint 103 in an articulated manner, the other end of the upper universal joint 103 is connected with one end of the hydraulic cylinder 104, the other end of the hydraulic cylinder 104 is connected with one end of the lower universal joint 105, the other end of the lower universal joint 105 is connected with the movable end of the lower articulated support 106 in an articulated manner, the base of the lower articulated support 106 is fixedly connected with the upper portion of the bottom 107 of the moving platform, and the. In a preferred example, the number of the upper articulated support 102 and the lower articulated support 106 on the top 101 and the bottom 107 of the same group of motion platform is three, and the number of the hydraulic cylinders 104 is six; the hydraulic cylinder 104 is hinged with the upper universal joint 103 and the lower universal joint 105.
As shown in FIG. 2, the wave energy conversion device comprises a wave energy conversion hydraulic energy part and a hydraulic energy conversion electric energy part. The wave energy conversion hydraulic energy part comprises a one-way valve bridge circuit 202, a high-pressure oil pipeline 203, a high-pressure accumulator 204, a low-pressure accumulator 206 and a low-pressure oil pipeline 208; the check valve bridge 202 is connected to the high-pressure accumulator 204 through a high-pressure oil line 203, and the check valve bridge 202 is connected to the low-pressure accumulator 206 through a low-pressure oil line 208. The check valve bridge 202 includes a first check valve 3, a second check valve 4, a third check valve 5, a fourth check valve 6; wherein, the outlet of the first one-way valve 3 and the outlet of the third one-way valve 5 form the outlet of the one-way valve bridge circuit 202, and the inlet of the second one-way valve 4 and the inlet of the fourth one-way valve 6 form the inlet of the one-way valve bridge circuit 202; the outlet of the check valve bridge 202 communicates with a high-pressure oil line 203, and the inlet of the check valve bridge 202 communicates with a low-pressure oil line 208. The hydraulic energy-to-electric energy conversion part comprises a generator 205 and a hydraulic motor 207; an oil inlet of the hydraulic motor 207 is communicated with a high-pressure accumulator 204 of the wave energy conversion hydraulic energy part, an oil outlet of the hydraulic motor 207 is communicated with a low-pressure accumulator 206 of the wave energy conversion hydraulic energy part, and the hydraulic motor 207 is coaxially connected with a generator 205.
Preferably, a rod cavity 1 of the hydraulic cylinder 104 of the wave energy absorption device is respectively communicated with an inlet of the first check valve 3 and an outlet of the second check valve 4, and a rodless cavity 2 of the hydraulic cylinder 104 of the wave energy absorption device is respectively communicated with an inlet of the third check valve 5 and an outlet of the fourth check valve 6.
Preferably, the one or more suspensions 302 are symmetrically mounted on a beam of the fixed platform 301. In the preferred embodiment, the number of the suspension frames 302 on the same fixed platform 301 is twelve, and the suspension frames 302 are symmetrically installed on the cross beam of the fixed platform 301. One or more hydraulic cylinders 104 of the wave energy absorbing device are connected in parallel in the hydraulic oil circuit of the wave energy converting device. The one or more wave energy absorbing devices are correspondingly mounted on one or more suspensions 302. In the preferred embodiment, six hydraulic cylinders 104 are coupled in parallel in the hydraulic oil circuit of the wave energy conversion device, and one wave energy absorbing device is correspondingly mounted on one suspension 302.
The power generation principle of the invention is as follows:
the waves push the floater 108 to move periodically, the floater 108 drives the piston of the hydraulic cylinder 104 to reciprocate, hydraulic oil in the hydraulic cylinder 104 flows in a hydraulic oil loop in a unidirectional way under the pushing of the one-way valve bridge circuit 202, the hydraulic oil flows out of an outlet of the one-way valve bridge circuit 202, then flows through the high-pressure oil pipeline 203 and enters an oil inlet of the hydraulic motor 207 under the buffering of the high-pressure accumulator 204 to push the hydraulic motor 207 to rotate, so that the generator 205 is driven to rotate to generate electricity, the hydraulic oil flows out of an oil outlet of the hydraulic motor 207, then is buffered by the low-pressure accumulator 206, and then returns to the hydraulic cylinder 104 through the low-pressure oil pipeline 208, so that the wave energy is converted into usable electric energy continuously through the.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. A wave energy absorbing and converting device comprises a fixed platform (301) and a suspension (302), and is characterized by also comprising a wave energy absorbing device and a wave energy converting device; one end of a suspension (302) is mounted on a cross beam of the fixed platform (301), and the other end of the suspension (302) is fixedly connected with a wave energy absorption device and a wave energy conversion device;
the wave energy absorption device comprises a moving platform top (101), an upper articulated support (102), an upper universal joint (103), a hydraulic cylinder (104), a lower universal joint (105), a lower articulated support (106), a moving platform bottom (107) and a floater (108), wherein the hydraulic cylinder (104) comprises a rod cavity (1) and a rodless cavity (2); the upper part of the top (101) of the motion platform is connected with the other end of a suspension (302), the lower part of the top (101) of the motion platform is fixedly connected with a base of an upper articulated support (102), the movable end of the upper articulated support (102) is articulated with one end of an upper universal joint (103), the other end of the upper universal joint (103) is connected with one end of a hydraulic cylinder (104), the other end of the hydraulic cylinder (104) is connected with one end of a lower universal joint (105), the other end of the lower universal joint (105) is articulated with the movable end of a lower articulated support (106), the base of the lower articulated support (106) is fixedly connected with the upper part of the bottom (107) of the motion platform, and the lower part of the bottom (107) of the motion platform is fixedly connected with a;
the lower end of the floater (108) is conical, and the upper end of the floater is cylindrical;
the upper hinged supports (102) are uniformly distributed on the circumference of the top (101) of the platform, the lower hinged supports (106) are uniformly distributed on the circumference of the bottom (107) of the moving platform, and the upper hinged supports (102) and the lower hinged supports (106) are arranged in a staggered manner; the movable end of one upper hinged support (102) is connected with one end of two adjacent hydraulic cylinders (104) through an upper universal joint (103), the other ends of the two hydraulic cylinders (104) connected on the upper hinged support (102) are connected with two lower hinged supports (106), and the movable end of one lower hinged support (106) is connected with the other ends of the two adjacent hydraulic cylinders (104) through a lower universal joint (105).
2. The wave energy absorption and conversion device of claim 1, wherein the wave energy conversion device comprises a wave energy conversion hydraulic energy section, a hydraulic energy conversion electrical energy section.
3. The wave energy absorption and conversion device according to claim 2, characterized in that the wave energy conversion hydraulic energy section comprises a one-way valve bridge (202), a high pressure oil line (203), a high pressure accumulator (204), a low pressure accumulator (206), a low pressure oil line (208); the check valve bridge circuit (202) is communicated with the high-pressure accumulator (204) through a high-pressure oil pipeline (203), and the check valve bridge circuit (202) is communicated with the low-pressure accumulator (206) through a low-pressure oil pipeline (208).
4. The wave energy absorption and conversion device according to claim 3, characterized in that the check valve bridge (202) comprises a first check valve (3), a second check valve (4), a third check valve (5), a fourth check valve (6); wherein the outlet of the first one-way valve (3) and the outlet of the third one-way valve (5) form the outlet of a one-way valve bridge circuit (202), and the inlet of the second one-way valve (4) and the inlet of the fourth one-way valve (6) form the inlet of the one-way valve bridge circuit (202); the outlet of the one-way valve bridge circuit (202) is communicated with the high-pressure oil pipeline (203), and the inlet of the one-way valve bridge circuit (202) is communicated with the low-pressure oil pipeline (208).
5. The wave energy absorption and conversion device according to claim 2, characterized in that the hydraulic energy-to-electric energy portion comprises an electric generator (205), a hydraulic motor (207); an oil inlet of the hydraulic motor (207) is communicated with a high-pressure accumulator (204) of the wave energy conversion hydraulic energy part, an oil outlet of the hydraulic motor (207) is communicated with a low-pressure accumulator (206) of the wave energy conversion hydraulic energy part, and the hydraulic motor (207) is coaxially connected with a generator (205).
6. The wave energy absorption and conversion device according to claim 4, characterized in that the rodless cavity (2) of the hydraulic cylinder (104) of the wave energy absorption device is in communication with the inlet of the first check valve (3) and the outlet of the second check valve (4), respectively, and the rodless cavity (1) of the hydraulic cylinder (104) of the wave energy absorption device is in communication with the inlet of the third check valve (5) and the outlet of the fourth check valve (6), respectively.
7. Wave energy absorption and conversion device according to claim 1, characterized in that the one or more suspensions (302) are symmetrically mounted on a crossbeam of the fixed platform (301).
8. Wave energy absorption and conversion device according to claim 1, characterized in that the one or more hydraulic cylinders (104) of the wave energy absorption device are coupled in parallel into the hydraulic oil circuit of the wave energy conversion device.
9. The wave energy absorption and conversion device according to claim 1, characterized in that the one or more wave energy absorption devices are correspondingly mounted on one or more suspensions (302).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810936476.4A CN109139338B (en) | 2018-08-16 | 2018-08-16 | Wave energy absorbing and converting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810936476.4A CN109139338B (en) | 2018-08-16 | 2018-08-16 | Wave energy absorbing and converting device |
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| CN109139338A CN109139338A (en) | 2019-01-04 |
| CN109139338B true CN109139338B (en) | 2020-08-14 |
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| CN201810936476.4A Active CN109139338B (en) | 2018-08-16 | 2018-08-16 | Wave energy absorbing and converting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645817A (en) * | 2022-05-20 | 2022-06-21 | 中国海洋大学 | Multi-degree-of-freedom wave energy floater and semi-submersible floating type fan coupling power generation system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943511B (en) * | 2021-01-29 | 2022-11-22 | 中山大学 | Three-dimensional wave energy power generation device |
| CN114060206B (en) * | 2022-01-18 | 2022-08-02 | 中国海洋大学 | Hydraulic multi-degree-of-freedom wave power generation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102840089B (en) * | 2012-08-29 | 2015-01-21 | 华北电力大学 | Marine wind power generator set-based plug-in type wave energy power generation system |
| CN106640503B (en) * | 2016-09-21 | 2021-01-08 | 燕山大学 | Three-degree-of-freedom six-branch-chain wave energy power generation device |
| CN206759341U (en) * | 2017-04-13 | 2017-12-15 | 重庆大学 | A kind of TRT using wave energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645817A (en) * | 2022-05-20 | 2022-06-21 | 中国海洋大学 | Multi-degree-of-freedom wave energy floater and semi-submersible floating type fan coupling power generation system and method |
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