CN211174443U - Sea wave power generation device - Google Patents
Sea wave power generation device Download PDFInfo
- Publication number
- CN211174443U CN211174443U CN201921117837.9U CN201921117837U CN211174443U CN 211174443 U CN211174443 U CN 211174443U CN 201921117837 U CN201921117837 U CN 201921117837U CN 211174443 U CN211174443 U CN 211174443U
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- Prior art keywords
- hydraulic
- way valve
- hydraulic motor
- oil
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 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 utility model relates to the field of hydraulic engineering, in particular to a sea wave power generation device, which comprises a pile, a platform, a floater, a connecting bracket, a hydraulic oil cylinder and a hydraulic system, wherein one end of the connecting bracket is rotationally connected on the platform, and the other end of the connecting bracket is rotationally connected on the floater; the hydraulic oil cylinder is arranged on the platform, and a piston rod of the hydraulic oil cylinder is rotatably connected to the connecting bracket; the hydraulic system is arranged on the platform and comprises a first one-way valve, a second one-way valve, an oil tank, a hydraulic motor and a permanent magnet generator; a rodless cavity of the hydraulic oil cylinder is respectively connected with a first one-way valve and a second one-way valve, and a rod cavity of the hydraulic oil cylinder is connected with an oil tank; the first one-way valve is connected with the oil tank; the second one-way valve is connected with the hydraulic motor; a rotating shaft of the hydraulic motor is connected with a rotating shaft of the permanent magnet generator; and an oil outlet of the hydraulic motor is connected with an oil tank. The utility model discloses a power generation facility simple structure is compact, can realize wave power generation, green.
Description
Technical Field
The utility model relates to a hydraulic engineering field especially relates to a wave power generation facility.
Background
China has abundant wave energy resources, most of sea areas have wave energy reserves above the reserves, the energy flow density can reach more than 2Kw/m in south China sea, the wave height is about 1.5m, the wave period is 6s, the wave height can be developed and utilized, and the wave energy can be developed and used for power generation when the SWH is larger than 1.3m generally recognized.
However, the total reserve of ocean energy in China is huge and is several times of the installed capacity of electric power in China, and in areas where wave energy is so rich, such as islands and other slightly remote places, the problem of power supply is more serious than that of continents. For large and medium islands, to meet the living and production needs on the island, huge capital-consuming submarine power supply cables and continental power grids are often constructed to be networked. Small islands are usually not connected to a continental power grid, and the daily power consumption of local residents cannot be stably supplied, so that the islands are inconvenient to develop and utilize.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wave power generation facility can produce stable electric energy to simple structure easily realizes.
In order to solve the technical problem, the utility model provides a sea wave power generation device, which comprises a pile, a platform, a floater, a connecting bracket, a hydraulic oil cylinder and a hydraulic system,
the platform is arranged between the piles;
one end of the connecting bracket is rotatably connected to the platform, and the other end of the connecting bracket is rotatably connected to the floater;
the hydraulic oil cylinder is arranged on the platform, and a piston rod of the hydraulic oil cylinder is rotatably connected to the connecting bracket;
the hydraulic system is arranged on the platform and comprises a first one-way valve, a second one-way valve, an oil tank, a hydraulic motor and a permanent magnet generator;
a rodless cavity of the hydraulic oil cylinder is respectively connected with a first one-way valve and a second one-way valve, and a rod cavity of the hydraulic oil cylinder is connected with an oil tank;
the first one-way valve is connected with the oil tank;
the second one-way valve is connected with the hydraulic motor;
the rotating shaft of the hydraulic motor is connected with the rotating shaft of the permanent magnet generator through a coupler;
the oil outlet of the hydraulic motor is connected with the oil tank through an oil pipe.
As a preferred scheme, the hydraulic system further comprises a protection system, the protection system comprises a hydraulic pump, a third one-way valve and a three-position four-way reversing valve, and two top oil outlets of the three-position four-way reversing valve are respectively connected with the first one-way valve and a rodless cavity of the hydraulic cylinder; two bottom oil inlets of the three-position four-way reversing valve are respectively connected with the oil tank and the third one-way valve; the third one-way valve is connected with a hydraulic pump, and the hydraulic pump is connected with an oil tank.
Preferably, the hydraulic motor includes a fixed displacement hydraulic motor and a variable displacement hydraulic motor.
Preferably, an overflow valve is installed on a connecting pipeline between the second check valve and the hydraulic motor.
Preferably, an accumulator is arranged on a connecting pipeline between the second one-way valve and the hydraulic motor.
Preferably, the second one-way valve is connected with a first normally closed two-position two-way valve, and the first normally closed two-position two-way valve is connected with the oil tank.
Preferably, a second normally closed two-position two-way valve is mounted on a connecting pipeline between the variable hydraulic motor and the second one-way valve.
The utility model discloses following beneficial effect has:
the wave power generation device of the utility model makes the floater rise through the wave, the floater pushes the piston rod of the hydraulic oil cylinder to rise, the hydraulic oil in the rodless cavity of the hydraulic oil cylinder is pushed out, the hydraulic oil flows through the hydraulic motor, the hydraulic motor is driven by the hydraulic oil to work, the permanent magnet generator is driven by the hydraulic motor to generate power, and finally, the electric energy is generated; the whole process is fast and stable, and the whole device has simple and compact structure, low maintenance cost and convenient maintenance.
Drawings
Fig. 1 is a schematic structural diagram of a wave power generation device provided by an embodiment of the present invention;
fig. 2 is a float movement diagram of a wave power generation device provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a hydraulic system of a wave power generation device provided by an embodiment of the present invention;
fig. 4 is a schematic diagram of a hydraulic system of a wave power generation device provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of a protection system of a wave power generation device according to an embodiment of the present invention.
Reference numerals: 1. pile columns; 2. a platform; 3. connecting a bracket; 4. a float; 5. a hydraulic cylinder; 6. a hydraulic system; 7. a fixed displacement hydraulic motor; 8. a permanent magnet generator; 9. a variable displacement hydraulic motor; 10. a second normally closed two-position two-way valve; 11. an oil tank; 12. an accumulator; 13. an overflow valve; 14. a first check valve; 15. a second one-way valve; 16. a first normally closed two-position two-way valve; 17. a hydraulic pump; 18. a third check valve; 19. a three-position four-way reversing valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, 2, 3 and 4, the wave power generating device in the preferred embodiment of the present invention comprises a pile 1, a platform 2, a float 4, a connecting bracket 3, a hydraulic oil cylinder 5 and a hydraulic system 6,
the platform 2 is arranged between the piles 1;
one end of the connecting bracket 3 is rotatably connected to the platform 2, and the other end of the connecting bracket is rotatably connected to the floater 4;
the hydraulic oil cylinder 5 is arranged on the platform 2, and a piston rod of the hydraulic oil cylinder 5 is rotatably connected to the connecting bracket 3;
the hydraulic system 6 is arranged on the platform 2 and comprises a first one-way valve 14, a second one-way valve 15, an oil tank 11, a hydraulic motor and a permanent magnet generator 8;
a rodless cavity of the hydraulic oil cylinder 5 is respectively connected with a first one-way valve 14 and a second one-way valve 15, and a rod cavity of the hydraulic oil cylinder 5 is connected with an oil tank 11;
the first one-way valve 14 is connected with the oil tank 11;
the second one-way valve 15 is connected with a hydraulic motor;
the rotating shaft of the hydraulic motor is connected with the rotating shaft of the permanent magnet generator 8 through a coupler;
the oil outlet of the hydraulic motor is connected with the oil tank 11 through an oil pipe.
It should be noted that, a plurality of floats 4 can be arranged and matched with a plurality of hydraulic oil cylinders 5 to be connected in parallel, and the hydraulic oil cylinders respectively convey hydraulic oil to the hydraulic motor, so that the power generation efficiency is improved.
The utility model discloses preferred embodiment's wave power generation facility's theory of operation: the floater 4 is jacked up by sea waves, the floater 4 jacks up a piston rod of the hydraulic cylinder, so that hydraulic oil in a rodless cavity of the hydraulic cylinder is pressed out, the hydraulic oil flows through the hydraulic motor and then reaches the oil tank 11, and the hydraulic motor obtains power to drive the permanent magnet generator 8 to generate electricity; when sea waves return, the floater 4 descends, a piston rod of the hydraulic cylinder descends, hydraulic oil flows back to the oil tank 11 from the rod cavity, and the oil tank 11 presses the hydraulic oil into the rodless cavity; the process is continuously circulated, and continuous power generation is realized.
It should be noted that the first check valve 14 and the second check valve 15 can prevent the hydraulic oil in the rodless chamber of the hydraulic cylinder from directly flowing to the oil tank 11, so that the hydraulic oil can stably flow to the hydraulic motor.
Referring to fig. 5, in the preferred embodiment of the present invention, the hydraulic system 6 further includes a protection system, the protection system includes a hydraulic pump 17, a third check valve 18 and a three-position four-way reversing valve 19, two top oil outlets of the three-position four-way reversing valve 19 are respectively connected to the first check valve 14 and the rodless cavity of the hydraulic cylinder; two bottom oil inlets of the three-position four-way reversing valve are respectively connected with the oil tank 11 and the third one-way valve 18; the third check valve 18 is connected to a hydraulic pump 17, and the hydraulic pump 17 is connected to the oil tank 11.
Specifically, the working principle of the protection system is as follows: when the offshore condition is severe and power generation cannot be continued, the hydraulic pump 17 inputs hydraulic oil into the rod cavity of the hydraulic oil cylinder 5, and the piston rod of the hydraulic oil cylinder 5 pulls the floater 4 to rise, so that the floater 4 is separated from the sea surface, the floater 4 is prevented from being damaged, and a protection effect is achieved.
In the preferred embodiment of the present invention, the hydraulic motors include a fixed displacement hydraulic motor 7 and a variable displacement hydraulic motor 9.
In the preferred embodiment of the present invention, an overflow valve 13 is installed on the connection pipeline between the second check valve 15 and the hydraulic motor.
Specifically, the overflow valve 13 can play a role in constant pressure overflow, pressure stabilization, system unloading and safety protection.
In the preferred embodiment of the present invention, an accumulator 12 is installed on the connection pipeline between the second check valve 15 and the hydraulic motor.
Specifically, the energy accumulator 12 is adopted, when the power generation of the device is normal or the device has surplus electric power, redundant hydraulic oil can be stored, and when the output of the wave power generation device is unstable, namely the wave height does not meet the power generation requirement, the energy storage system releases the stored hydraulic oil, so that the power supply to the power grid is ensured. In addition, the frequency and voltage fluctuation of the generated power can be effectively reduced, the influence of the power fluctuation on a power grid is reduced, and the stability of the electric energy of the device is improved.
In the preferred embodiment of the present invention, the second check valve 15 is connected to a first normally closed two-position two-way valve 16, which is connected to the oil tank 11.
In the preferred embodiment of the present invention, a second normally closed two-position two-way valve 10 is installed on a connection pipeline between the variable hydraulic motor 9 and the second check valve 15.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (7)
1. A wave power generation device is characterized in that: comprises a pile, a platform, a floater, a connecting bracket, a hydraulic oil cylinder and a hydraulic system,
the platform is arranged between the piles;
one end of the connecting bracket is rotatably connected to the platform, and the other end of the connecting bracket is rotatably connected to the floater;
the hydraulic oil cylinder is arranged on the platform, and a piston rod of the hydraulic oil cylinder is rotatably connected to the connecting bracket;
the hydraulic system is arranged on the platform and comprises a first one-way valve, a second one-way valve, an oil tank, a hydraulic motor and a permanent magnet generator;
a rodless cavity of the hydraulic oil cylinder is respectively connected with a first one-way valve and a second one-way valve, and a rod cavity of the hydraulic oil cylinder is connected with an oil tank;
the first one-way valve is connected with the oil tank;
the second one-way valve is connected with the hydraulic motor;
the rotating shaft of the hydraulic motor is connected with the rotating shaft of the permanent magnet generator through a coupler;
the oil outlet of the hydraulic motor is connected with the oil tank through an oil pipe.
2. A wave power plant as set forth in claim 1, characterized in that the hydraulic system further comprises a protection system, the protection system comprises a hydraulic pump, a third check valve and a three-position four-way reversing valve, and two top oil outlets of the three-position four-way reversing valve are respectively connected with the first check valve and the rodless cavity of the hydraulic cylinder; two bottom oil inlets of the three-position four-way reversing valve are respectively connected with the oil tank and the third one-way valve; the third one-way valve is connected with a hydraulic pump, and the hydraulic pump is connected with an oil tank.
3. A wave power plant as set forth in claim 1, characterized in that said hydraulic motors include a fixed displacement hydraulic motor and a variable displacement hydraulic motor.
4. A wave power plant as set forth in claim 1, characterized in that an overflow valve is provided in a connection pipe between the second check valve and the hydraulic motor.
5. A wave power plant as set forth in claim 1, characterized in that an accumulator is mounted on a connection pipe between said second check valve and said hydraulic motor.
6. A wave power plant as set forth in claim 1, characterized in that the second one-way valve is connected to a first normally closed two-position two-way valve, which is connected to an oil tank.
7. A wave power plant as set forth in claim 3, characterized in that a second normally closed two-position two-way valve is mounted on a connecting line between the variable hydraulic motor and the second one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921117837.9U CN211174443U (en) | 2019-07-17 | 2019-07-17 | Sea wave power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921117837.9U CN211174443U (en) | 2019-07-17 | 2019-07-17 | Sea wave power generation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211174443U true CN211174443U (en) | 2020-08-04 |
Family
ID=71809556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921117837.9U Expired - Fee Related CN211174443U (en) | 2019-07-17 | 2019-07-17 | Sea wave power generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211174443U (en) |
-
2019
- 2019-07-17 CN CN201921117837.9U patent/CN211174443U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200804 Termination date: 20210717 |
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| CF01 | Termination of patent right due to non-payment of annual fee |