CN210531047U - Oscillating floater wave energy power generation facility with biasing inertia body - Google Patents
Oscillating floater wave energy power generation facility with biasing inertia body Download PDFInfo
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- CN210531047U CN210531047U CN201921553851.3U CN201921553851U CN210531047U CN 210531047 U CN210531047 U CN 210531047U CN 201921553851 U CN201921553851 U CN 201921553851U CN 210531047 U CN210531047 U CN 210531047U
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- 238000010248 power generation Methods 0.000 title claims abstract description 23
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 8
- 238000009825 accumulation Methods 0.000 claims description 11
- 239000010724 circulating oil Substances 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 230000010355 oscillation Effects 0.000 abstract description 6
- 238000001228 spectrum Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000008010 sperm capacitation Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
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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
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- 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
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Abstract
An oscillating floater wave energy power generation device with a bias inertia body belongs to the field of clean new energy. The power generation device comprises an inertia mechanism and an oscillating floater mechanism, wherein the oscillating floater mechanism comprises a floater and a submerged body, and a double-acting hydraulic cylinder, a hydraulic pipe system and a hydraulic motor generator set are arranged in the submerged body. The inertial mechanism is arranged in the floater, the rotor of the generator is coaxially connected with one shaft of the universal joint through the speed changer and the rotating shaft, and the rotating shaft provided with the offset inertial body is connected with the other shaft of the universal joint. When the floater oscillates in waves, the double-acting hydraulic cylinder supplies hydraulic oil; meanwhile, the inertial mechanism in the floater acts, and the bias inertial body drives the rotating shaft to rotate in a single direction. The power generation device can move in the directions of three degrees of freedom, namely heave, roll and pitch, and can obtain energy, so that the energy conversion efficiency is improved. Meanwhile, due to the fact that the natural oscillation frequency of the heaving and shaking devices is different, the effective frequency spectrum width of the energy conversion of the device can be effectively expanded, and the effective energy obtaining frequency range of the wave energy conversion device is increased.
Description
Technical Field
The utility model relates to an oscillating float wave energy power generation facility with biasing inertial body belongs to clean new forms of energy technical field.
Background
With the development of economy in China, the supply of electric power resources gradually becomes a main factor restricting the development of economy in China, and the traditional thermal power generation technology which mainly uses fossil fuels such as coal, petroleum and the like as electric sources can cause serious environmental pollution and can not meet the strategic requirements of sustainable development of economy and environment. With the progress of science and technology, new energy technology is greatly advanced, and the industrialized development is gradually formed, so that the method becomes a new way for solving the problem of electric power resources in China.
China's economic center of gravity is mainly focused on eastern coastal areas, and China has a coastline of 18000 kilometers, so that ocean energy resources are more and more widely concerned. Among them, wave energy has the advantages of large resource storage, good stability, low construction cost, etc., and thus becomes the most promising direction in many ocean energy resource fields, and receives more and more extensive attention.
However, the low wave energy density in China causes the low energy conversion efficiency of the ocean energy device, and the large-scale development and use of the ocean energy device are limited. Therefore, how to improve the energy conversion efficiency of the ocean energy device under the condition of low wave energy density becomes a bottleneck problem in the ocean energy research in China. The traditional ocean energy device adopts a single-degree-of-freedom energy acquisition method, namely, the wave ocean energy equipment only moves in a single-degree-of-freedom direction to obtain energy, so that the energy conversion rate is low.
Disclosure of Invention
In order to overcome the problem that exists among the prior art, the utility model provides an oscillating float wave energy power generation facility with biasing inertial body, this power generation facility should make full use of oscillating float and biasing inertial body can be at the motion of the three degree of freedom directions of heaving, rolling, pitching and capacitation to improve energy conversion efficiency. Meanwhile, due to the fact that the natural oscillation frequency of the heaving and shaking devices is different, the effective frequency spectrum width of the energy conversion of the device can be effectively expanded, and the effective energy obtaining frequency range of the wave energy conversion device is increased.
The utility model adopts the technical proposal that: an oscillating floater wave energy power generation device with a bias inertia body comprises an inertia mechanism and an oscillating floater mechanism, wherein the oscillating floater mechanism comprises a hemispherical hollow floater and a hollow submerged body, a double-acting hydraulic cylinder, a hydraulic piping system comprising a pressure storage tank and a circulating oil tank and a hydraulic motor generator set are arranged in the submerged body, the double-acting hydraulic cylinder is fixed on the wall of the submerged body, and a piston rod connected with a piston in the double-acting hydraulic cylinder penetrates through a guide sleeve fixed on the submerged body; the inertial mechanism is arranged in the floater, a stator of a first generator is fixed on the inner side of a hemispherical plane part of the floater wall, one end of a universal joint is fixed on the hemispherical arc part wall of the floater wall, a rotor of the first generator is coaxially connected with a shaft of the universal joint through a rotating shaft, and a biasing inertial body is arranged on the rotating shaft close to the universal joint; the end part of the piston rod is connected with the other shaft of the universal joint, when the floater oscillates in waves, the piston is driven by the piston rod to move in the double-acting hydraulic cylinder, hydraulic oil is supplied to the pressure accumulation tank, and the hydraulic oil enters the hydraulic motor to drive the second generator; meanwhile, the inertial mechanism in the floater acts, and the offset inertial body drives the rotating shaft to rotate in a single direction to drive the first generator.
The universal joint is a ball joint type universal joint or a cross shaft joint type universal joint.
And a ratchet mechanism, a gear speed increasing and flywheel speed stabilizing speed changer are arranged on the rotating shaft.
The guiding idea of the technical scheme is as follows: when the submersible power generation device works, after waves act on the oscillating floater, the floater moves along with the waves in a pendulous mode to drive the piston rod to move up and down, so that the double-acting hydraulic cylinder in the submersible body is pushed to generate high-pressure oil, two ends of the double-acting hydraulic cylinder are communicated with the hydraulic motor through the hydraulic pipe system, and the power generation function of vertical movement is achieved. Meanwhile, the universal joint is arranged at the bottom of the floater, the floater rotates around the universal joint at a proper angle under the action of waves, when the floater rotates, the offset inertial body in the floater drives the rotating shaft to rotate under the action of inertial force, the rotating shaft is limited by the ratchet mechanism to maintain unidirectional rotation, and then the generator is driven by the gear acceleration and the flywheel speed stabilization to rotate at a constant speed to generate electricity, so that the electricity generating function of the rotation of the floater is realized.
The utility model has the advantages that: the oscillating floater wave energy power generation device with the offset inertia body comprises an inertia mechanism and an oscillating floater mechanism, wherein the oscillating floater mechanism comprises a hemispherical hollow floater and a hollow submerged body, and a double-acting hydraulic cylinder, a hydraulic pipe system and a hydraulic motor generator set are arranged in the submerged body. The inertial mechanism is arranged in the floater, the rotor of the first generator is coaxially connected with one shaft of the universal joint through the speed changer and the rotating shaft, and the rotating shaft provided with the offset inertial body is connected with the other shaft of the universal joint. When the floater oscillates in waves, the double-acting hydraulic cylinder supplies hydraulic oil; meanwhile, the inertial mechanism in the floater acts, and the bias inertial body drives the rotating shaft to rotate in a single direction. The power generation device can move in the directions of three degrees of freedom, namely heave, roll and pitch by fully utilizing the oscillating floater and the offset inertial body and can obtain energy, so that the energy conversion efficiency is improved. Meanwhile, due to the fact that the natural oscillation frequency of the heaving and shaking devices is different, the effective frequency spectrum width of the energy conversion of the device can be effectively expanded, and the effective energy obtaining frequency range of the wave energy conversion device is increased.
Drawings
Fig. 1 is a block diagram of an oscillating buoy wave energy power plant with an offset inertial mass.
Fig. 2 is a diagram of an operating state in which an oscillating float having a biased inertial body is located at a wave trough.
Fig. 3 is a diagram of an operating state of an oscillating float with a biased inertial body at a wave peak.
Fig. 4 is a schematic diagram of hydraulic piping.
In the figure: 1. the hydraulic power generation device comprises a floater 1a, a floater wall, 2, a first generator 2a, a rotating shaft 2b, an offset inertia body 2c, a transmission 3, a universal joint 4, a guide sleeve 5, a submerged body 5a, a submerged body wall 6, a double-acting hydraulic cylinder 6a, a piston 6b, a piston rod 7, a first high-pressure hose 7a, a second high-pressure hose 8, a pressure accumulation tank 9, a hydraulic motor 10, a second generator 11, a circulating oil tank 12, a free water surface, V1, a first oil supply one-way valve, V2, a second oil supply one-way valve, V3, a first oil return one-way valve, V4 and a second oil return one-way valve.
Detailed Description
Fig. 1 shows a block diagram of an oscillating buoy wave energy power plant with an offset inertial body. In the figure, the oscillating floater wave energy power generation device with the offset inertia body comprises an inertia mechanism and an oscillating floater mechanism, wherein the oscillating floater mechanism comprises a hemispherical hollow floater 1 and a hollow submerged body 5, a double-acting hydraulic cylinder 6, a hydraulic piping system comprising a pressure accumulation tank 8 and a circulating oil tank 11 and a hydraulic motor generator set are arranged in the submerged body 5, the double-acting hydraulic cylinder 6 is fixed on the wall 5a of the submerged body, and a piston rod 6b connected with a piston 6a in the double-acting hydraulic cylinder 6 penetrates through a guide sleeve 4 fixed on the submerged body 5. The inertial mechanism is arranged in the floater 1, the stator of the first generator 2 is fixed on the inner side of the hemispherical plane part of the floater wall 1a, one end of the universal joint 3 is fixed on the hemispherical circular arc part wall of the floater wall 1a, the rotor of the first generator 2 is coaxially connected with a shaft of the universal joint 3 through a speed changer 2c and a rotating shaft 2a, and a bias inertial body 2b is arranged on the rotating shaft 2a close to the universal joint 3. The end part of the piston rod 6b is connected with the other shaft of the universal joint 3, when the floater 1 oscillates in waves, the piston rod 6b drives the piston 6a to move in the double-acting hydraulic cylinder 6, hydraulic oil is supplied to the pressure accumulation tank 8, and the hydraulic oil enters the hydraulic motor 9 to drive the second generator 10; meanwhile, the inertial mechanism in the floater 1 acts, and the offset inertial body 2b drives the rotating shaft 2a to rotate in a single direction to drive the first generator 2. The universal joint 3 adopts a ball joint type universal joint or a cross shaft joint type universal joint. The rotating shaft 2a is provided with a ratchet mechanism and a speed changer 2c for increasing the speed of the gear and stabilizing the speed of the flywheel.
Fig. 4 shows a hydraulic piping schematic. The solid arrows in the figure indicate oil supply and the open arrows indicate oil return. The hydraulic pipe system comprises a pressure accumulation tank 8, a plurality of one-way valves and a circulating oil tank 11, the hydraulic motor generator set comprises a hydraulic motor 9 and a second generator 10, an oil pressure gauge and a safety valve are arranged on the pressure accumulation tank 8, and a liquid level gauge and an oil tank cover are arranged on the circulating oil tank 11. The first high-pressure hose 7 is connected with the pressure accumulation tank 8 through a first oil supply one-way valve V1, and is also connected with the circulating oil tank 11 through a first oil return one-way valve V3, the second high-pressure hose 7a is connected with the pressure accumulation tank 8 through a second oil supply one-way valve V2, and is also connected with the circulating oil tank 11 through a second oil return one-way valve V4, an oil outlet pipe of the pressure accumulation tank 8 is connected with an oil inlet of a hydraulic motor 9 for driving the second generator 10 to rotate, and an oil outlet pipe of the hydraulic motor 9 is connected with the circulating oil tank 11.
Fig. 2 shows a diagram of an operating state in which an oscillating float with a biased inertial body is located in a wave trough. When the float 1 is located at the valley, the piston 6a moves to the bottom end of the double-acting hydraulic cylinder 6, during which movement the lower chamber of the piston 6a presses the accumulator tank 8 and the upper chamber of the piston 6a sucks oil from the circulating tank 11.
Fig. 3 shows a diagram of the operating state of an oscillating float with a biased inertial body at the wave crest. When the float 1 is at the wave crest, the piston 6a moves to the top end of the double-acting hydraulic cylinder 6, in the moving process, the upper cavity of the piston 6a presses oil to the pressure accumulation tank 8, and the lower cavity of the piston 6a sucks oil from the circulating oil tank 11.
By adopting the technical scheme, the power generation efficiency is improved by a method of enabling the floater heave natural frequency to be equal to the local wave frequency, the floater heave natural frequency can be obtained by the following formula,
wherein,Mas to the mass of the float,a 33for added mass, ρ is the density of the seawater,Ais the water surface area in the float.
The self-vibration frequency of the float in the rotating direction can also be obtained by the following formula,
wherein M is the float mass, g is the gravitational acceleration, zcIs the centre of rotation of the float (i.e. the gimbal position), z0Is the center of mass of the float, a55Adding mass to the float in the direction of rotation, I11And I33The rotational inertia of the float in the horizontal and heave directions respectively;
is the area moment of the floater in the horizontal direction;
is volume moment of the heaving direction of the floater.
The parameters of formula (1) and formula (2) are actually related, and generally cannot meet the requirement that the wave frequency is the same as the local wave frequency. During design, the natural oscillation frequency of the heave is firstly ensured to be the same as the local wave frequency, and the natural oscillation frequency of the rotation direction is adjusted on the basis of the natural oscillation frequency.
Compared with the prior art, the utility model discloses can utilize the wave to generate electricity, break through the restriction that traditional wave power generation set single degree of freedom capacitation in the past, can be in the heaving, surging three direction capacitation, improve energy conversion efficiency. And further provides a calculation method of the self-oscillation periods of the two, and the self-oscillation period can be designed according to the local wave frequency, so that a better wave power generation effect is obtained. When the water depth is shallow, the submerged body at the bottom of the wave energy device can be placed on the sea bottom; when the water depth is deeper, the bottom submerged body can be connected with mooring systems such as anchor chains and the like to be submerged and floated in the sea. The device can be used independently, and can also be used in an array mode to achieve a better energy obtaining effect. Based on the reason, the utility model discloses can extensively promote in ocean engineering, coast engineering, clean energy technical field.
Claims (3)
1. The utility model provides an oscillating float wave energy power generation facility with biasing inertial body, power generation facility includes inertial mechanism and oscillating float mechanism, characterized by: the oscillating floater mechanism comprises a hemispherical hollow floater (1) and a hollow submerged body (5), a double-acting hydraulic cylinder (6), a hydraulic pipe system comprising a pressure storage tank (8) and a circulating oil tank (11) and a hydraulic motor generator set are arranged in the submerged body (5), the double-acting hydraulic cylinder (6) is fixed on the wall (5 a) of the submerged body, and a piston rod (6 b) connected with a piston (6 a) in the double-acting hydraulic cylinder (6) penetrates through a guide sleeve (4 a) fixed on the submerged body (5);
the inertia mechanism is arranged in the floater (1), a stator of a first generator (2) is fixed on the inner side of a hemispherical plane part of a floater wall (1 a), one end of a universal joint (3) is fixed on the wall of a hemispherical circular arc part of the floater wall (1 a), a rotor of the first generator (2) is connected with a coaxial shaft of the universal joint (3) through a speed changer (2 c) and a rotating shaft (2 a), and a bias inertia body (2 b) is arranged on the rotating shaft (2 a) close to the universal joint (3);
the end part of the piston rod (6 b) is connected with the other shaft of the universal joint (3), when the floater (1) oscillates in waves, the piston rod (6 b) drives the piston (6 a) to move in the double-acting hydraulic cylinder (6), hydraulic oil is supplied to the pressure accumulation tank (8), and the hydraulic oil enters the hydraulic motor (9) to drive the second generator (10); meanwhile, an inertia mechanism in the floater (1) acts, and a rotating shaft (2 a) is driven by a bias inertia body (2 b) to rotate in a single direction to drive the first generator (2).
2. The oscillating buoy wave energy power generation device with the offset inertial body as claimed in claim 1, which is characterized in that: the universal joint (3) is a ball hinge type universal joint or a cross shaft hinge type universal joint.
3. The oscillating buoy wave energy power generation device with the offset inertial body as claimed in claim 1, which is characterized in that: and a ratchet mechanism, a gear speed increasing and flywheel speed stabilizing speed changer (2 c) are arranged on the rotating shaft (2 a).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110439734A (en) * | 2019-09-18 | 2019-11-12 | 大连理工大学 | A kind of oscillating floater wave energy generating set with biasing coasting body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110439734A (en) * | 2019-09-18 | 2019-11-12 | 大连理工大学 | A kind of oscillating floater wave energy generating set with biasing coasting body |
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