CN103967712A - Wind energy-wave energy integrated power generation structure based on single pile platform - Google Patents

Abstract

Wind energy-wave energy integrated power generation structure based on single pile platform, including the wind power generation structure and the wave energy power generation facility of single pile platform, the wind power generation structure of single pile platform includes wind energy conversion system, pylon structure, single pile bearing structure and supporting power transmission system, and wave energy power generation facility establishes in pylon structure surface of water department, and beneficial effect is: the single-pile platform structure is convenient to construct, low in construction cost and wide in application range; the wind power generation and the wave power generation share the single-pile supporting structure and the power transmission system, so that the unit power generation cost can be effectively reduced; the wind driven generator has the advantages of reasonable and stable structural design and mature construction scheme, the existing commercial products can be selected for the wind driven generator, and the wave energy generator can be optimally designed in performance by combining the statistical characteristics of the waves of the site selection field.

Description

Wind energy-wave energy integrated power generation structure based on single pile platform

technical field

The invention belongs to the field of ocean energy utilization, in particular to a wind energy-wave energy comprehensive utilization device.

Background technique

Offshore wind energy and wave energy are both clean and renewable ocean energy. Wind energy can be converted into electrical energy by using wind power generation devices, and wave energy can be converted into electrical energy by using wave power generation devices. The exploitable offshore wind energy resources in the eastern coast of my country are about 750 million kilowatts, which not only has huge resource potential, but also has good market conditions for development and utilization, and is closer to China's economic center. Offshore wind energy development has the advantages of saving precious land resources, more stable wind power, larger wind turbine unit capacity, higher annual effective utilization hours, less restricted by noise standards, and more convenient transportation conditions. Wave energy resources are also abundant in wind-rich waters. However, compared with offshore wind power generation, the energy conversion rate of wave power generation devices is lower, and the unit power generation cost is higher, which limits its commercial application to a certain extent.

In the prior art, the foundations of offshore wind power generation devices mainly include fixed support platform structures such as single pile type, multi-pile type, gravity type, jacket type, and high pile cap type. Among them, the single pile type platform is convenient for construction, Low construction cost, strong applicability and other advantages, the most widely used. Wave energy power generation devices mainly include: sea snake type, heave type, swing type and dam type power generation devices.

The disadvantages of the existing technology are: the energy conversion rate of the wave power generation device is low, and the unit power generation cost is high, which limits its commercial application. Although offshore wind power generation has the advantages of saving land resources, large single-unit capacity, high annual effective utilization hours, small noise standard restrictions, and convenient transportation conditions, there is still a lack of comprehensive development of marine energy that integrates wind power generation and wave power generation. structural system.

Contents of the invention

The purpose of the present invention is to propose a structure integrating wind power generation and wave power generation, so that the two share the support platform structure and the power transmission supporting system.

The purpose of the present invention is achieved in this way: the wind energy-wave energy integrated power generation structure based on the single pile platform includes the wind power generation structure of the single pile platform, and the wind power generation structure of the single pile platform includes a wind turbine, a tower structure, a single pile support structure and supporting structures. The power transmission system is characterized in that the wind energy-wave energy integrated power generation structure based on the single-pile platform also includes a wave energy power generation device arranged at the water surface of the tower structure, and the wave power generation device and the tower structure pass through a slideway type The contact device is coupled and connected, and the slideway type contact device includes a pulley, a slideway and a spring damper, the slideway is fixed on the outer surface of the tower structure, the pulley is installed on the wave energy generating device through the pulley shaft, and the spring damper Installed between the pulley and the wave energy generating device where the pulley is installed, the spring damper presses the pulley to the slideway.

The wind energy-wave energy integrated power generation structure based on the single pile platform of the present invention is characterized in that the slideway type contact device is composed of 4 to 8 sets of even sets, which are arranged symmetrically along the outer surface of the tower structure.

The wind energy-wave energy integrated power generation structure based on the single-pile platform of the present invention is characterized in that the wave energy generating device is a heave type wave energy generating device.

The wind energy-wave energy integrated power generation structure based on the monopile platform of the present invention is characterized in that the heave type wave energy power generation device includes a piston structure, a hydraulic cylinder, a one-way inflow valve I, a one-way outflow valve I, a single One-way inflow valve II, one-way outflow valve II, throttle valve, accumulator, hydraulic motor and power generation device, the piston of the piston structure is placed in the hydraulic cylinder, and the upper and lower sides of the piston of the hydraulic cylinder are respectively connected by the channel and the hydraulic pressure. The motor is connected, a one-way inflow valve I is provided on the upper channel of the hydraulic cylinder piston, a one-way outflow valve I is provided on the lower channel of the hydraulic cylinder piston, and a one-way inflow valve I is installed on the channel between the upper channel one-way inflow valve I and the hydraulic cylinder. The upper side branch channel is set up, the upper side branch channel is connected with the channel between the one-way outflow valve I of the lower side channel and the hydraulic motor, the one-way outflow valve II is arranged on the upper side branch channel, and the one-way outflow valve II of the lower side channel is provided. The channel between the valve I and the hydraulic cylinder is provided with a lower side branch channel, and the lower side branch channel is connected with the channel between the one-way inflow valve I and the hydraulic motor, and the lower side branch channel is provided with a one-way inflow valve II , a throttle valve is connected between the channel between the one-way inflow valve I and the hydraulic motor in the upper channel and the channel between the one-way outflow valve I and the hydraulic motor in the lower channel, and the upper channel and the lower channel are connected with the hydraulic motor The ends are respectively provided with accumulators, and the hydraulic motor is connected with the power generation device. The relative vertical movement of the wave energy generating device and the tower structure drives the piston structure to move, so that the liquid in the hydraulic tank enters the hydraulic motor through the one-way inflow valve and the throttle valve, and drives it to rotate, thereby driving the generator to generate electricity. And the accumulator mainly plays the role of stabilizing the pressure of the hydraulic system and protecting the safety of the hydraulic system.

The wind energy-wave energy integrated power generation structure based on the monopile platform of the present invention is characterized in that the top wind turbine is a MW-level variable-speed variable-pitch offshore wind turbine.

The beneficial effects of the present invention are:

1. The single-pile platform structure is convenient for construction, low in construction cost, and wide in scope of application.

2. Wind power generation and wave power generation share the single pile support structure and power transmission system, which can effectively reduce the unit power generation cost.

3. The structural design is reasonable and stable, and the construction scheme technology is mature. The wind turbine can choose existing commercial products, and the selection is simple.

4. The wave energy conversion device can effectively use the two-way movement of the piston structure in the hydraulic cylinder to drive the hydraulic motor to rotate, and finally drive the generator to generate electricity. Its main performance parameters can be optimally designed in combination with the wave characteristics of the site.

Description of drawings

Fig. 1a is the front view of the wind energy-wave energy integrated power generation structure based on the single pile platform of the present invention

Figure 1b is a side view of the wind energy-wave energy integrated power generation structure based on the single pile platform of the present invention

Figure 2a is a schematic cross-sectional view of the connection between the heave type wave energy generation device and the tower structure of the wind energy-wave energy integrated power generation structure based on the single pile platform of the present invention

Fig. 2b is a top view schematic diagram of the connection between the heave type wave energy generation device and the tower structure of the wind energy-wave energy integrated power generation structure based on the single pile platform of the present invention

Fig. 3 is a partial schematic diagram of the sliding connection between the heave type wave energy generating device and the tower of the wind energy-wave energy integrated power generation structure based on the single pile platform of the present invention

Figure 4 is a schematic diagram of the wave energy generation device system

In the figure, 1. Wind turbine, 2. Tower structure, 3. Wave energy power generation device, 4. Single pile support structure, 5. Slideway contact device, 6. Pulley, 7. Slideway, 8. Spring damper , 9. Piston structure, 10. Hydraulic cylinder, 11. One-way inflow valve I, 12. One-way outflow valve I, 13. One-way inflow valve II, 14. One-way outflow valve II, 15. Throttle valve , 16, accumulator, 17, hydraulic motor, 18, power generation device.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The wind energy-wave energy integrated power generation structure based on a single pile platform includes a single pile platform wind power generation structure and a wave energy power generation device 3, and the single pile platform wind power generation structure includes a wind turbine 1, a tower structure 2, a single pile support structure 4 and supporting power Transmission system, the wind turbine 1 is a MW-level variable-speed variable-pitch offshore wind turbine, the wave energy generation device 3 is a heave type wave energy generation device, the wave energy generation device 3 is located on the water surface of the tower structure, and the wave energy generation device 3 and the tower The frame structure 2 is coupled and connected through a slideway contact device 5, which includes a pulley 6, a slideway 7 and a spring damper 8, the slideway 7 is fixed on the outer surface of the tower structure 2, and the pulley 6 passes through the pulley shaft Installed on the wave energy generating device 3, the spring damper is installed between the pulley 6 and the wave energy generating device at the position where the pulley is installed, and the spring damper 8 presses the pulley 6 to the slideway 7. The slideway contact device 5 is composed of 4 sets of even sets, which are arranged symmetrically along the outer surface of the tower structure 2 . The heave wave energy generating device 3 includes a piston structure 9, a hydraulic cylinder 10, a one-way inflow valve I11, a one-way outflow valve I12, a one-way inflow valve II13, a one-way outflow valve II14, a throttle valve 15, an energy storage 16, hydraulic motor 17 and power generation device 18, the piston of the piston structure 9 is placed in the hydraulic cylinder 10, the upper side and the lower side of the piston of the hydraulic cylinder 10 are respectively communicated with the hydraulic motor 17 by channels, and the upper side of the piston of the hydraulic cylinder 10 is on the channel. A one-way inflow valve I11 is provided, a one-way outflow valve I12 is provided on the lower passage of the piston of the hydraulic cylinder 10, and an upper side branch passage is provided on the passage between the one-way inflow valve I11 and the hydraulic cylinder 10 on the upper passage, and the upper side The branch channel communicates with the channel between the one-way outflow valve I12 of the lower side channel and the hydraulic motor 17, and the one-way outflow valve II14 is arranged on the upper side branch channel, and the one-way outflow valve I12 of the lower side channel is connected with the hydraulic cylinder 10. A lower side branch channel is set on the channel between them, the lower side branch channel communicates with the channel between the upper side channel one-way inflow valve I11 and the hydraulic motor 17, the lower side branch channel is provided with a one-way inflow valve II13, the upper side channel is single A throttle valve 15 is connected between the channel between the inflow valve I11 and the hydraulic motor 17 and the channel between the one-way outflow valve I12 and the hydraulic motor 17 in the lower channel, and the upper channel and the lower channel are connected to the hydraulic motor 17. An energy accumulator 16 is respectively provided, and a hydraulic motor 17 is connected to a power generating device 18 . The slideway contact device 5 can ensure the coordinated movement between the heave wave energy generating equipment and the tower structure in the other five degrees of freedom directions except the heave direction, which is conducive to optimizing the use of the relative heave motion of the two for wave can generate electricity; use the relative vertical movement of the floating wave energy power generation device 3 and the tower 2 to drive the vertical movement of the piston structure 9, so that the liquid in the hydraulic cylinder 10 respectively passes through the one-way inflow valve I11, (in the reverse direction: through The one-way inflow valve II13) enters the hydraulic motor 17 to drive it to rotate, thereby driving the generator 18 to generate electricity and realize the conversion of wave energy into electric energy. The throttle valve 15 and the accumulator 16 mainly play the role of stabilizing the pressure of the hydraulic system and protecting the safety of the hydraulic system.

Product design of the present invention will combine following factors:

1) According to the wind resource characteristics of the installation site, select the wind turbine 1, and optimize the height and section size of the tower structure 2 according to the performance parameters and aerodynamic design load of the wind turbine 1.

2) According to the wave statistical characteristics of the installation site, select the heave type wave energy generation device, and design the slideway contact device 7 according to the performance parameters of the heave type wave energy generation device, and connect the wave energy generation device with the tower on the water surface Structures are coupled.

3) According to the quality of the selected wind turbine and tower structure, combined with the hydrodynamic characteristics of the wave power generation device and the water depth and geological conditions of the site, design the cross-sectional size of the single-pile platform support structure 4 .

The construction and installation process of the wind energy-wave energy-tidal current energy integrated power generation structure based on the single-pile platform is as follows: First, use the existing single-pile platform construction technology to fix the single-pile platform on the seabed, and then transport the single-pile support structure to the installation location Installed on the monopile platform; secondly, assemble the wave energy generating device 3 on the water surface of the tower structure 1 on the shore, and then transport the assembled wave energy generating device 3 and the tower structure 1 to the installed machine by using a professional construction ship The position is installed on the single pile support structure 4, and finally the top wind turbine 1 is installed to complete the construction and installation of the wind energy-wave energy integrated power generation structure based on the single pile platform.

Claims (5)

1. wind energy-wave energy integrated generation the structure based on single pile platform, comprise single pile platform wind power generation structure, single pile platform wind power generation structure comprises wind energy conversion system (1), pylon structure (2), single pile supporting structure (4) and supporting electrical power transmission system, it is characterized in that described wind energy-wave energy integrated generation structure based on single pile platform also comprises the wave energy generating set (3) that is located at pylon structure water surface place, described wave energy generating set (3) connects by slide track type contact device (5) coupling with pylon structure (2), described slide track type contact device (5) comprises pulley (6), slideway (7) and spring-damper (8), described slideway (7) is fixed on pylon structure (2) outer side surface, pulley (6) is arranged on wave energy generating set (3) by pulley spindle, spring-damper (8) is arranged on pulley (6) and installs between the wave energy generating set (3) of pulley (6) position, spring-damper (8) makes pulley (6) press to slideway (7).

2. wind energy-wave energy integrated generation the structure based on single pile platform according to claim 1, is characterized in that described slide track type contact device (5) is comprised of the even number covers of 4～8 covers, is arranged symmetrically with along pylon structure (2) outer side surface.

3. wind energy-wave energy integrated generation the structure based on single pile platform according to claim 1, is characterized in that described wave energy generating set (3) is to hang down to swinging formula wave energy generating set.

4. wind energy-wave energy integrated generation the structure based on single pile platform according to claim 3, it is characterized in that described hang down swing formula wave energy generating set (3) and comprise piston structure (9), oil hydraulic cylinder (10), the unidirectional valve I (11) that becomes a mandarin, unidirectionally go out to flow valve I (12), the unidirectional valve II (13) that becomes a mandarin, unidirectionally go out to flow valve II (14), throttle valve (15), accumulator (16), oil hydraulic motor (17) and electricity generating device (18), the piston of piston structure (9) is placed in oil hydraulic cylinder (10), the piston upside of oil hydraulic cylinder (10) and downside are communicated with oil hydraulic motor (17) by passage respectively, oil hydraulic cylinder (10) piston upper channel is provided with the unidirectional valve I (11) that becomes a mandarin, oil hydraulic cylinder (10) piston underside passage is provided with the unidirectional valve I (12) that goes out to flow, on the unidirectional passage becoming a mandarin between valve I (11) and oil hydraulic cylinder (10) of upper channel, establish upside subchannel, the unidirectional channel connection that goes out to flow between valve I (12) and oil hydraulic motor (17) of upside subchannel and lower side canal, upside subchannel is provided with the unidirectional valve II (14) that goes out to flow, on the unidirectional passage that goes out to flow between valve I (12) and oil hydraulic cylinder (10) of lower side canal, set side subchannel, the unidirectional channel connection becoming a mandarin between valve I (11) and oil hydraulic motor (17) of downside subchannel and upper channel, downside subchannel is provided with the unidirectional valve II (13) that becomes a mandarin, upper channel is unidirectional become a mandarin between valve I (11) and oil hydraulic motor (17) passage and lower side canal unidirectional go out to flow between valve I (12) and oil hydraulic motor (17) between passage, be connected a throttle valve (15), upper channel and lower side canal and oil hydraulic motor (17) connecting end are respectively equipped with accumulator (16), oil hydraulic motor (17) is connected with electricity generating device (18).

5. wind energy-wave energy integrated generation the structure based on single pile platform according to claim 1, is characterized in that described wind energy conversion system (1) is MW level speed-changing oar-changing marine windmill.