CN106545458B - A swing wave energy conversion structure and an array bottom hinge swing wave energy conversion device with floating damping plates - Google Patents

Abstract

The invention provides a swing type wave energy conversion structure and an array bottom hinge swing type wave energy conversion device with a floating damping plate. Nine wave energy capturing columns are installed on the floating damping plate, and eight of the wave energy capturing columns are hinged on The floating damping plates are arranged in a circular array, and a hydraulic cylinder is installed between each column and the floating damping plate, the cylinder body is hinged with the floating damping plate, and the piston is hinged with the column. The remaining wave energy capture column is fixedly connected to the center of the circular array of floating damping plates. Wave-absorbing buoys are installed on the nine wave energy capturing columns, and the wave-absorbing floats cooperate with the gears on the wave energy capturing columns through racks. The float can absorb the potential energy of the wave, and the wave energy capture column hinged on the damping plate can absorb the kinetic energy of the wave; the array arrangement of the column and the float can improve the frequency response range of the device and improve the power generation efficiency; the design of the floating damping plate allows the device to be launched It is underwater and rises and falls with the ups and downs of the waves, which increases the adaptability of the deep sea environment.

Description

A rocking wave energy conversion structure and array bottom hinge rocking with floating damping plates wave energy conversion device

technical field

The invention relates to the technology of generating electricity by using ocean energy, in particular to a swing wave energy conversion structure and an array bottom hinge swing wave energy conversion device with a floating damping plate.

Background technique

As an important material basis for human survival and development, fossil energy has supported the basic survival needs and social development needs of human beings for nearly two hundred years. However, due to the excessive exploitation and use of fossil energy by humans, coupled with its non-renewable , leading to the gradual depletion of fossil energy.

In addition, the combustion of fossil energy has brought huge pollution problems. The emission of sulfur dioxide and soot is the chief culprit for the intensification of acid rain and frequent smog in recent years. Therefore, the development and utilization of various new renewable clean energy has become a It is one of the urgent problems in the world at present.

The ocean covers 79% of the earth's surface, and the huge ocean energy contained in it is a huge energy wealth bestowed by nature on human beings. The energy of the ocean exists in the form of tides, waves, temperature differences, salinity gradients, ocean currents, etc. Great development potential. The development and utilization of wave energy by humans began at the end of the 18th century, and after the outbreak of the world oil crisis in the 1970s, some countries on the coast of the North Sea in Europe paid attention. After more than 40 years of hard work, a part of the wave energy generation device that can be put into practical application has been formed.

The wave energy resources in the ocean in my country's coastal areas are widely distributed, and their energy density is lower than that in other areas. Within the area where marine wave energy resources are developed, the marine environment in the coastal waters is relatively milder than that in the far sea. At the same time, the wave energy near the coast is limited by the friction loss of the seabed, and the wave energy level is richer than that in the coastal waters. Moreover, in offshore areas, wave energy generating devices are easy to launch and maintain, and wave energy resources are easy to develop. Refer to "Heilongjiang Youth Science Fund 2016-Report Text-20161011" Most of the early wave energy power generation devices were shore-based fixed structures, that is, the wave energy devices needed to be placed on fixed hydraulic foundations or other buildings built around the coast. With the improvement of technology, there are two types of wave energy power generation devices: offshore seabed device and floating device. The structure and working principle of the offshore bottom-mounted device is roughly the same as that of the shore-based fixed device, while the floating device does not need to be installed on a fixed building. The general idea is to install the wave energy generation device on a floating on the carrier or platform, such as a wave energy generating ship; or directly design the wave energy generating device as a floating structure, such as the "Sea Snake" floating wave energy generating device of the British Pelamis company, its main body is composed of several cylindrical The buoys are connected together by hinges. Under the force of waves, the buoys generate relative motion, and then drive the hydraulic device installed at the hinge point to capture wave energy.

In the fixed wave energy generation device, no matter it is installed on the shore or offshore, it is necessary to build a corresponding hydraulic foundation or building. The cost is high and the construction is difficult, which reduces the economy of the wave energy generation device. In addition, the buffer capacity of the fixed structure is poor, and the impact resistance of wind and waves is weak, which reduces the reliability and stability of the power generation device itself, increases the maintenance cost, makes the implementation of wave power generation difficult, and reduces the scalability.

Based on the above reasons, the focus of research on wave energy devices at home and abroad has gradually shifted to floating structures. However, most floating devices are only composed of a single buoy and a wave energy capture column, which can only capture the energy of one-way waves, with low power generation efficiency and poor stability. Due to the impact of terrain in my country's coastal waters, the waves are significantly broken, and it is difficult for the one-way energy harvesting device to fully utilize the wave energy.

Contents of the invention

The purpose of the present invention is to provide a swinging wave energy conversion structure and an array with floating damping plates that can effectively utilize wave energy in multiple directions and have high stability in combination with the specific conditions of wave conditions near the coast of my country Bottom hinge swing wave energy conversion device is suitable for matrix wave energy power generation device in deep water working environment.

The purpose of the present invention is achieved in this way: a swinging wave energy conversion structure, including a hollow guide rail, an annular float installed on the guide rail, a cover plate arranged on the upper end of the guide rail, and an inverted U-shaped connecting rod installed on the upper end of the annular float , the rack fixedly connected to the upper end of the inverted U-shaped connecting rod, the generator installed on the cover plate, and the gear installed on the generator shaft, the generators have two and are symmetrically arranged on both sides of the rack, two The gear meshes with the rack at the same time, and the lower end of the rack extends into the guide rail. The rack is provided with a chute, and the cover plate is provided with a stop device that cooperates with the upper and lower end surfaces of the chute.

The present invention also includes such structural features:

1. The middle position of the outer surface of the guide rail is hinged with the piston rod of the hydraulic cylinder, and the cylinder liner of the hydraulic cylinder is hinged with the support.

2. The annular float is composed of a hollow cylinder at the upper end and a hollow inverted cone at the lower end. The guide rail is also provided with an upper stopper and a lower stopper to limit the stroke of the floater.

3. An array bottom hinge swinging wave energy conversion device with a floating damping plate, comprising a damping plate, one said swinging wave energy conversion structure, eight said swinging wave energy conversion structures, mooring The gravity anchor and the positioning anchor at the lower end of the damping plate are arranged in turn, the guide rails of the eight swinging wave energy conversion structures are respectively installed on the damping plate through hinged seats, and the eight swinging wave energy conversion structures are arranged in a circular array and The corresponding supports are also respectively installed on the damping plates, and the guide rails of the rocking wave energy conversion structure are fixedly installed on the damping plates and located at the center of the circular array.

Compared with the prior art, the beneficial effect of the present invention is that the present invention hinges a plurality of swing-type wave energy conversion devices on the floating damping plate in an array structure, and can capture wave potential energy in multiple directions through the wave energy capture column. The hydraulic unit is simultaneously converted into electrical energy. The array structure can improve the frequency response range of the device, make the lifting movement of the float more obvious after being subjected to wave action, and improve the power generation efficiency. The invention can solve the disadvantages of single energy harvesting direction, low wave energy utilization rate and poor stability of the current floating wave energy generating device.

The present invention utilizes the circular array of wave energy to capture the column, and can convert the kinetic energy of waves in multiple directions into electrical energy by means of the design of the swing structure and the hydraulic device; the array structure of the column is captured by the wave energy, and the interaction between the columns The resonance effect is generated, which further improves the conversion efficiency of wave energy; the design of the floating damping plate changes the fixed structure of the traditional wave energy generation device, so that when the float moves with the waves, it can generate a larger relative displacement with the column, and obtain more energy. more energy, has the advantages of high conversion efficiency, more stable and reliable, etc., which is more conducive to the utilization and promotion of the oscillating buoy type wave power generation device; the present invention can effectively solve the problem of low absorption and capture efficiency of current wave power generation devices Slow speed, huge capturing structure of wave energy generating device, etc.

Description of drawings

Fig. 1 is a perspective view of the present invention;

Fig. 2 is a schematic diagram of a rocking wave energy conversion structure of the present invention;

Fig. 3 is the connection diagram of gear, rack and generator and its output device;

Figure 4 is a schematic diagram of the working sea surface and the location of the device (A refers to the working sea surface);

Fig. 5 is a structural diagram of the hydraulic system of the hydraulic cylinder of the present invention.

Detailed ways

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

1 to 5, the present invention includes an anchoring device, a floating device, a hydraulic device, a floating body device and a power generation device. On the platform, 16 hinged seats 5 and 7 are installed in a circular array, which is convenient for connecting the floating body device and the hydraulic device. The water blocking plate returns to the original position at the fastest speed, so that the wave amplitude in the main floating body Reset, and then the next peak appears, and the wave energy is captured and gathered again.

An anchoring device is provided at the lower end of the floating device, and the anchoring device includes a positioning anchor 1 , a gravity anchor 3 and a mooring line 2 . One end of the mooring line 2 is connected to the lower end of the damping plate 4, and the other end is connected to the gravity anchor 3, and the lower part of the gravity anchor 3 is connected to the positioning anchor 1 through the mooring line 2. The entire wave energy conversion device floats in the sea, and its floating height and position depend on the position of the mooring device, and the gravity anchor can increase the weight of the entire device and improve stability. The positioning anchor is connected with the gravity anchor, which increases the positioning of the device. controllability and precision.

A floating body device is installed on the floating device, and the floating body device includes 9 sets of wave energy capture columns 6 (that is, swing wave energy conversion structures), of which 8 sets are hinged on the floating damping plate in a circular array, and the remaining 1 set Fixed in the center of the circular array, it can effectively resonate the fluid around the float, thereby improving the wave capture efficiency and gathering energy more efficiently.

The wave energy capture column (that is, the swing wave energy conversion structure) includes a guide rail 6-1, a connecting rod 6-5, a float 6-2 and a cover plate 6-4. The guide rail 6-1 is a hollow long sleeve, the float 6-2 slides up and down along the guide rail 6-1, and the bottom end of the guide rail 6-1 is provided with a hinged hole or a fixing hole, and the hinged hole is used to be hinged on the floating damping plate So that the whole column can swing with the waves, so as to obtain the kinetic energy of the waves, the fixing holes are used to fix the column on the floating damping plate, that is, the column at the central position, so as to prevent it from colliding with the other 8 sets of wave energy capture columns in a circular array 6 Interference and collisions occur.

The connecting rod 6-5 is in the shape of an inverted "U" with its opening downward, and its two ends are connected with the float 6-2. The float 6-2 is circular, the top is a hollow cylinder, and the bottom is a hollow inverted cone, which can increase the contact area between the float and water, improve displacement and increase buoyancy. The inner ring side wall of the float establishes a sliding connection with the guide rail 6-1. The cover plate 6-4 is fixed on the upper end of the guide rail for installing the power generation device.

Described generating device comprises tooth bar 6-3, gear 15, power transmission shaft, motor support 13 and generator 12, and generator 12 is fixed on the cover plate of wave energy capture column, and the upper end of tooth bar 6-3 is installed on the connection The U-shaped closed end of the rod 6-5, the lower end of the rack 6-3 penetrates into the guide rail 6-1 of the wave energy capture column, the rack 6-3 meshes with the gear 15, and the gear 15 is installed on the wave energy through the transmission shaft. On the cover plate 6-4 of the capture column, the gear 15 establishes transmission connection with the generator 12 through the transmission shaft, specifically the transmission shaft is installed on the cover plate through bearings and brackets 16 and 17.

The array bottom hinge swing wave energy conversion device with a floating damping plate is characterized in that: the guide rail 6-1 is provided with upper and lower stoppers, and the upper stopper and the lower stopper limit the float 6-2 Make the stroke range of periodic vibration to prevent the device from disengaging or crashing the float and other components.

The two opposite sides of the rack 6-3 are provided with rack grooves extending along the length direction of the rack, and the side walls of the rack groove along the length direction of the rack are provided with chute. Rollers are provided, and a stop device 14 is provided on the cover plate of the wave energy capturing column, and the stop device 14 establishes a sliding connection with the rack 6-3 through the rollers.

The hydraulic device includes components such as hydraulic cylinder 8, valve parts 19, 20, 25 and 26, accumulator groups 21 and 24, connecting oil pipes 18 and 27, oil delivery pipes 22 and 23, and hydraulic cylinder 8 includes piston rod 8-1 and the cylinder 8-2, and the cylinder is hinged with the corresponding support 7 through the rotating shaft 10 and the nut, the piston rod is connected with the guide rail through the hinge seat 9, and the hydraulic cylinder 8 is connected with the accumulator group respectively through the connecting oil pipe and the one-way valve . The accumulator group is connected with the power generation system through the oil pipeline. The connection is related to the oil pipe 18 on the front side of the piston and the oil pipe 27 on the rear side of the piston. The oil delivery pipe includes an oil inlet pipe 23 and an oil outlet pipe 22 . The one-way valves include an oil-in one-way valve A20, an oil-in one-way valve B26, an oil-out one-way valve A19 and an oil-out one-way valve B25. The accumulator group includes a high-pressure accumulator 21 and a low-pressure accumulator 24, which are respectively connected to external oil pipes through their own pressure control valves.

In the hydraulic device, the oil pipe 18 on the front side of the piston of the hydraulic cylinder is connected to the high-pressure accumulator 21 and the low-pressure accumulator 24 respectively through the oil outlet check valve A and the oil inlet check valve A; The oil check valve B and the oil inlet check valve B are respectively connected with the high pressure accumulator 21 and the low pressure accumulator 24 . The high pressure accumulator 21 is connected with the oil outlet pipe 22 through the pressure control valve; the low pressure accumulator 24 is connected with the oil inlet pipe 23 through the pressure control valve.

When the oil output pressure of the hydraulic cylinder is insufficient, the hydraulic oil enters the high-pressure accumulator to store energy; when the oil pressure increases to a certain level, the pressure control valve of the high-pressure accumulator opens, and the hydraulic oil is output from the high-pressure accumulator and enters the generator system.

When the hydraulic oil pressure in the oil inlet pipe is insufficient, the hydraulic oil enters the low-pressure accumulator to store energy; when the oil pressure increases to a certain level, the pressure control valve of the low-pressure accumulator opens, and the hydraulic oil is output from the low-pressure accumulator and enters hydraulic cylinder.

Claims (1)

1. a kind of swing Wave energy converter of array bottom hinge with floating damping sheet, it is characterised in that: including damping sheet, one One, eight swing wave power conversion structure two of a swing wave power conversion structure is successively set under damping sheet by mooring line The gravity anchor and positioning anchor at end, swing wave power conversion structure one and swing wave power conversion structure two include hollow lead Rail, the annular float being mounted on guide rail, the cover board that guide rail upper end is set, the inverted U connection for being mounted on annular float upper end Bar, the rack gear being connected with inverted U connecting rod upper end, gear installation generator on the cover board, be mounted on generator shaft, institute The two sides of rack gear are stated there are two generators and are symmetricly set on, two gears are engaged with rack simultaneously, and the lower end of rack gear is protruded into Into guide rail, it is provided with sliding slot on the rack gear, the stop bit device with the cooperation of sliding slot upper and lower end face is provided on cover board；It is described to lead The middle position of rail outer surface and the piston rod of hydraulic cylinder are hinged, and the cylinder sleeve and support of hydraulic cylinder are hinged, swing wave power conversion The annular float of structure two is made of the hollow inverted cone of the hollow cylindrical body and lower end of upper end, on the guide rail also The upper limit device and lower retainer of restricted float distance of run are set, and the guide rail of swing wave power conversion structure two passes through support respectively It is mounted on damping sheet and eight swing wave power conversion structures two is by circumference array arrangement and its corresponding support is also pacified respectively On damping sheet, the guide rail of swing wave power conversion structure one is fixedly mounted on the center on damping sheet and being located at circumference array Position, swing wave power conversion structure two are hinged on the swing realized on floating damping sheet with wave, swing wave power conversion knot Structure one is fixed on floating damping sheet.