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CN-121066756-B - Oscillating water column type wave energy power generation system with energy collecting structure at bottom

CN121066756BCN 121066756 BCN121066756 BCN 121066756BCN-121066756-B

Abstract

The invention relates to the technical field of ocean new energy technology utilization, and discloses an oscillating water column type wave energy power generation system with an energy collecting structure at the bottom, which comprises a jacket, an air chamber, a turbine power generation system, a radar altimeter, an infrared camera, an airflow speed sensor and a control host, and also comprises a bottom energy collecting component, wherein the bottom energy collecting component is arranged at the lower end of the air chamber and is provided with a transmission mechanism, the reflection and the flow guiding of sea water at the bottom of the air chamber are realized through a horizontal bottom plate and two energy collecting plates which are symmetrically arranged, the energy collection beyond the width of the air chamber is completed, and the opening and the closing of the energy collecting plates are synchronously controlled by the transmission mechanism, so that the sea water quantity in the air chamber is changed. The wave energy power generation system can adjust the oscillation intensity of the water column in the air chamber according to the change of sea surface waves, so that the generated air flow speed can be matched with the optimal working frequency of the turbine power generation system, the power generation efficiency of the device is ensured, and the oscillation water column type wave energy power generation device can be protected to avoid the impact caused by sea waves.

Inventors

  • NING DEZHI
  • LI QINZHANG
  • CHEN LIFEN
  • CONG PEIWEN

Assignees

  • 大连理工大学

Dates

Publication Date
20260505
Application Date
20250904

Claims (8)

  1. 1. The utility model provides an oscillating water column formula wave energy power generation system that has energy collection structure in bottom, includes jacket (8), air chamber (2), turbine power generation system (3), radar altimeter (33), infrared camera (30), air current velocity transducer (34) and control host computer, its characterized in that still includes: The bottom energy collecting assembly is arranged at the lower end of the air chamber (2) and is provided with a transmission mechanism, the bottom of the air chamber (2) is provided with a horizontal bottom plate (1) and two energy collecting plates (10) which are symmetrically arranged, the bottom of the air chamber (2) is used for reflecting and guiding seawater, energy collection outside the width of the air chamber (2) is completed, the transmission mechanism is used for synchronously controlling the opening and closing of the energy collecting plates (10), the water inflow amount in the air chamber (2) at a water inlet is changed, the optimal working frequency of a turbine power generation system (3) can be matched with the gas flow rate in the air chamber (2), the bottom energy collecting assembly consists of the transmission mechanism, a horizontal bottom plate (1) and two energy collecting plates (10), the bottom of the air chamber (2) is of an open structure, a plurality of fixing parts are arranged at the edges of the bottom of the air chamber, the horizontal bottom plate (1) is fixedly arranged at the lower end of the fixing parts and is coaxially arranged with the air chamber (2), the two energy collecting plates (10) are both connected between the air chamber (2) and the horizontal bottom plate (1) through a connecting shaft in a rotating mode, the two energy collecting plates (10) can be arranged at the positions of the two opposite sides of the air chamber (2), and the two energy collecting plates (2) are formed at the two opposite positions, and the two energy collecting plates (2) can be synchronously connected with the two energy collecting plates (2) through the water inlet plates; The transmission mechanism comprises a gear box (13) and a connecting rod assembly, wherein the gear box (13) is fixed at the upper end of a supporting frame (24) and is provided with two transmission shafts (23), one side of an air chamber (2) is fixedly connected with two supports, the side walls of the two transmission shafts (23) are respectively connected to the side walls of the supports through bearing seats in a rotating mode, two symmetrically arranged half shafts (27) are jointly connected between the two supports in a rotating mode, the connecting rod assembly comprises an arc rocker arm (25), a braking rod (26) and an arc rod (22), two arc rocker arms (25) are fixedly connected to the shaft wall of the half shaft (27), one side of an energy collecting plate (10) is fixedly connected with two arc rods (22), the arc rods (22) and the radian of the energy collecting plate (10) are the same to form an arc slide way, a pin shaft is arranged in the arc slide way, one end of the arc rocker arm (25) is fixedly connected with a roller wheel (31) in a rotating mode, one side of the arc rocker arm (25) is slidingly connected with a sliding block (32), one side of the sliding block (32) is fixedly connected with one side of the braking rod (26) through a sealing shaft (26) on the side wall (13), and a stepping motor (14) is adopted as a driving part to enable the two transmission shafts (23) to reversely rotate at the same speed; the adjusting mechanism is used for movably mounting the air chamber (2) on the jacket (8), one side of the air chamber (2) is fixedly provided with the support frame (24), the fixed height of the support frame (24) and the air chamber (2) is adjusted according to the change of sea surface height by adopting the screw lifter, the screw lifter is arranged at the rear side of a fixed part positioned at the middle part, and the positions of the air chamber (2) and the bottom energy gathering component are adjusted by driving the support frame (24), so that the air chamber (2) is kept at a proper water inlet depth and matched with the bottom energy gathering component to realize optimal wave energy conversion efficiency.
  2. 2. The oscillating water column type wave energy power generation system with the energy collecting structure at the bottom is characterized in that the energy collecting plate (10) is of an arc-shaped structure, an arc center is located on the central line of the air chamber (2) of the cylindrical structure, the thickness of the energy collecting plate (10) is identical to that of the air chamber (2), the outer side of the energy collecting plate is flush with the outer side of the air chamber (2), and the width of the energy collecting plate (10) is identical to the interval between the horizontal bottom plate (1) and the lower end of the air chamber (2).
  3. 3. The oscillating water column type wave energy power generation system with the energy collecting structure at the bottom is characterized in that a baffle plate (19) with a water collecting effect is fixedly connected to one side of the energy collecting plate (10), the lower end of the baffle plate (19) is attached to the upper end of the horizontal bottom plate (1), an arc-shaped groove (21) for limiting the opening and closing angles of the energy collecting plate (10) is formed in the upper end of the horizontal bottom plate (1) by taking a connecting shaft as a circle center, a positioning pin (20) is connected in the arc-shaped groove (21) in a sliding mode, and the positioning pin (20) is fixed on the baffle plate (19).
  4. 4. The oscillating water column type wave energy power generation system with the energy collecting structure at the bottom is characterized in that the arc-shaped groove (21) and the positioning pin (20) are matched to limit the energy collecting plate (10) to swing within the range of 0-80 degrees, when the energy collecting plates (10) are at the maximum angle under the driving of the transmission mechanism, the inner sides of the energy collecting plates (10) can be used for guiding seawater outside the diameter of the air chamber (2) to the bottom of the air chamber (2), the oscillating amplitude of the water column in the air chamber (2) is increased, and the air flow speed is increased, so that the turbine power generation system (3) can normally generate electricity.
  5. 5. The oscillating water column type wave energy power generation system with the energy collecting structure at the bottom is characterized in that an upper cover is connected to the upper end of a gear box (13) in a sealing mode, two symmetrically arranged gear shafts (29) are connected between the upper cover and the bottom of the gear box (13) in a rotating mode through ball bearings, gears (18) are meshed with one sides, opposite to the gear shafts (29), of the gears (18), the gears (18) are fixedly connected with the upper ends of transmission shafts (23) in a coaxial mode, the output end of a stepping motor (14) extends to the gear box (13) and is fixedly connected with a worm (17), two worm gears (16) are meshed with the rod wall of the worm (17), and the two worm gears (16) are respectively and coaxially fixed to the upper ends of the two transmission shafts (23).
  6. 6. The oscillating water column type wave energy power generation system with the energy collecting structure at the bottom is characterized in that the adjusting mechanism comprises a supporting frame (24) and two cross beams, the two cross beams are arranged in parallel and fixedly connected with two fixing plates (7) which are arranged vertically together, the two fixing plates (7) are fixedly arranged on a jacket (8), one side of each fixing plate (7) is fixedly connected with a guide rail (5), a matched sliding seat (4) is connected onto the guide rail (5) in a sliding manner, one side of each sliding seat (4) is fixedly connected with a plurality of supporting rods (11), one end of each supporting rod (11) is fixedly connected with the side wall of an air chamber (2), the screw lifter consists of a screw rod (6) and a driving motor (9), lifting nuts (28) are connected onto the rod wall of the screw rod (6) in a threaded manner, the lifting nuts (28) are fixed onto one side of the supporting frame (24), and one side of the cross beam located below is rotationally connected with the lower end of the screw rod (6) through a bearing seat.
  7. 7. The oscillating water column type wave energy power generation system with the energy collecting structure at the bottom is characterized in that the turbine power generation system (3) is installed at the center of the upper end of the air chamber (2) through an air flow pipeline, a guide cover (15) with a circular truncated cone-shaped structure is installed inside the air chamber (2), the lower port of the air flow pipeline of the turbine power generation system (3) is installed at the opening of the upper end of the guide cover (15) in a butt joint mode, an air flow speed sensor (34) is installed at the opening of the upper end of the guide cover (15), the air flow pipeline, the horizontal bottom plate (1), the air chamber (2), the guide cover (15) and the energy collecting plate (10) are made of high-strength light materials, a cover plate (12) is fixedly connected to the upper end of the air chamber (2), one end of the cover plate (12) is fixed to the upper end of the air chamber (2), and the other end of the cover plate (12) is fixed to the upper end of the support frame (24).
  8. 8. An oscillating water column wave energy power generation system with a bottom energy collecting structure according to claim 1, characterized in that the radar altimeter (33) is mounted on the jacket (8) and keeps the sea surface of the rear side area of the air chamber (2) irradiated vertically downwards, and the infrared camera (30) is mounted on the upper end of the leg column of the jacket (8) to irradiate the incoming wave direction at an included angle of 30-50 degrees with the sea surface.

Description

Oscillating water column type wave energy power generation system with energy collecting structure at bottom Technical Field The invention relates to the technical field of ocean new energy technology utilization, in particular to an oscillating water column type wave energy power generation system with an energy collecting structure at the bottom. Background The wave energy power generation device is mainly divided into three types of oscillating water column type, surmounting type and oscillating type according to the working principle, wherein the oscillating water column type wave energy device is not easy to corrode because an air turbine of the oscillating water column type wave energy device is not directly contacted with sea water, the device has the advantages of simple structure and high reliability, and the device shows excellent adaptability under complex sea conditions, is widely researched and used at present, and early oscillating water column type wave energy power generation devices are mainly of shore-based fixed structures, and the power generation power of the device is limited due to relatively low offshore wave energy density, so that the device is not beneficial to large-scale commercialization. The offshore oscillating water column wave energy device can overcome the problems, can develop and utilize deep and open sea wave energy with richer wave energy resources, has larger energy conversion efficiency when the oscillating water column wave energy device needs to have wave frequency close to the frequency of the device, combines an offshore jacket platform and an oscillating water column wave energy power generation device, and is used as a supporting foundation of the oscillating water column wave energy power generation device at present, so that the development cost of wave energy power generation is greatly reduced, the overall benefit of wave energy power generation is improved, and meanwhile, the energy crisis and the environmental pollution problem are relieved. At present, since the energy conversion efficiency of an offshore oscillating water column wave energy device depends on the vibration intensity of a water column in the offshore oscillating water column wave energy device, under variable sea conditions, the traditional device is limited by invariable installation height and uncontrollable water inflow at the bottom, so that the speed of airflow generated by the traditional device changes along with the change of sea waves, the flow rate of the air converted in an air chamber cannot be matched with the optimal working frequency of a turbine power generation system, the power generation efficiency is low, and the impact force of the sea waves on the air chamber also can damage the oscillating water column wave energy device and cannot work under extreme weather. Disclosure of Invention Technical problem to be solved Aiming at the defects of the prior art, the invention provides an oscillating water column type wave energy power generation system with an energy collecting structure at the bottom, which solves the problems that under variable sea conditions, the traditional device is limited by the unchangeable installation height, the water inflow at the bottom is uncontrollable, the energy capturing efficiency is low, the energy beyond the width of a gas chamber can not be absorbed, and the flow rate of the gas converted in the gas chamber can not be matched with the optimal working frequency of a turbine power generation system. Technical proposal In order to achieve the purpose, the invention provides the following technical scheme that the oscillating water column type wave energy power generation system with the energy collecting structure at the bottom comprises a jacket, an air chamber, a turbine power generation system, a radar altimeter, an infrared camera, an airflow speed sensor and a control host, and further comprises: the bottom energy collecting assembly is arranged at the lower end of the air chamber and is provided with a transmission mechanism, the energy collection outside the width of the air chamber is completed by carrying out reflection and flow guide on the seawater at the bottom of the air chamber through a horizontal bottom plate and two symmetrically arranged energy collecting plates, the opening and the closing of the energy collecting plates are synchronously controlled by the transmission mechanism, the seawater amount in the air chamber is changed at a water inlet, and the flow rate of the gas converted in the air chamber can be matched with the optimal working frequency of the turbine power generation system; The adjusting mechanism is used for movably mounting the air chamber on the jacket, one side of the air chamber is fixedly provided with a supporting frame, and the fixed heights of the supporting frame and the air chamber are adjusted by adopting a screw lifter according to the change of sea surface height, so that the air chamber i