CN109353465B

CN109353465B - Wave energy absorbing device of unmanned monitoring ship

Info

Publication number: CN109353465B
Application number: CN201811320456.0A
Authority: CN
Inventors: 赵春慧
Original assignee: Zhejiang Ocean University ZJOU
Current assignee: Zhejiang Ocean University ZJOU
Priority date: 2018-11-07
Filing date: 2018-11-07
Publication date: 2020-03-31
Anticipated expiration: 2038-11-07
Also published as: CN109353465A

Abstract

The invention discloses an unmanned monitoring ship wave energy absorption device, which belongs to the technical field of ocean energy utilization and comprises at least two buoyancy tanks connected with each other, wherein conversion devices are arranged in the buoyancy tanks, the conversion devices are connected with swing plates arranged below the buoyancy tanks through swing rods on the sides of the buoyancy tanks, buoyancy blocks are arranged on the sides of the buoyancy tanks, and the buoyancy blocks are connected with the buoyancy tanks through two connecting rods to form a triangular structure. The device can solve the problem that the stability and the power generation efficiency of the wave power generation device are influenced by rolling in the power generation process, and has the advantages of high energy conversion rate, long service life and low maintenance cost.

Description

Wave energy absorbing device of unmanned monitoring ship

Technical Field

The invention belongs to the technical field of ocean energy utilization, and particularly relates to a wave energy absorption device of an unmanned monitoring ship.

Background

Due to the increasing exhaustion of non-renewable energy sources such as global fossil energy and the increasing environmental pollution, the effective utilization of clean and renewable energy sources becomes an important choice for the energy strategy of the coastal countries in the world. The wave energy is mainly used for power generation and provides clean energy for national defense, ocean facilities and the like in remote sea areas. In addition, wave energy can also be used for pumping water, supplying heat, desalinating sea water, producing hydrogen and the like, but the existing wave energy has the characteristic of poor stability, so that the wave energy power generation system is low in energy utilization efficiency and poor in operation stability. If the ocean energy is reasonably and fully developed and utilized, the method is favorable for improving the comprehensive strength, radiation power and sustainable development capability of the ocean economy in China and promoting the establishment of the strong ocean economy.

At present, the owned quantity of ships in China is in the front of the world, the operation of the ships needs to consume a large amount of energy, and the energy consumption not only increases the cost of enterprises, but also increases the pollution to the environment. Therefore, the comprehensive application of the novel propulsion device and the new energy on the ship has important significance for saving energy, reducing cost, relieving environmental pollution and the like. Meanwhile, the ultimate automation of ships is unmanned ships. Since the united states "9 · 11", port safety has become an important issue, driving the development of unmanned ships. At present, various unmanned boats are used in military and civil fields. However, the technical field of unmanned monitoring ships in China is still in a blank stage, and meanwhile, how to effectively utilize the wave energy power generation device to generate power to supply energy to the monitoring ships and maintain efficient energy conversion of the wave energy power generation device is urgently needed to be solved.

Disclosure of Invention

The invention aims to provide an unmanned monitoring ship wave energy absorption device which can overcome the problems that the stability and the power generation efficiency of a wave power generation device are influenced by rolling in the power generation process, and has the advantages of high energy conversion rate, long service life and low maintenance cost.

The technical scheme adopted by the invention for realizing the purpose is as follows: the utility model provides an unmanned monitoring ship wave can absorbing device, includes two at least interconnect's flotation tank, is equipped with conversion equipment in the flotation tank, and conversion equipment passes through the swinging arms of flotation tank side and is connected with the swing board that sets up in the flotation tank below, and flotation tank side is equipped with the kicking block, and the kicking block forms the triangle structural connection with the flotation tank through two connecting rods. The device can realize the monitoring work of the unmanned monitoring ship in the region by connecting the unmanned monitoring ship with the buoyancy tank and converting the energy into the energy by the swinging of the swinging plate due to the impact of water flow through the conversion device in the buoyancy tank, and the unmanned monitoring ship is powered by the conversion device, and the device adopts the floating block and two connecting rods to realize the triangular structure connection with the buoyancy tank, utilizes the triangular stability principle to bear the impact force in irregular waves and keep stable, and the triangular structure between the floating block and the buoyancy tank can eliminate or reduce the transverse swinging action of the irregular ocean waves on the buoyancy tank, keep the swinging plate at the bottom of the buoyancy tank swinging, and ensure the whole device to have the self-regulation function, thereby ensuring the buoyancy tank to be stably stressed, overcoming the problems that the conversion efficiency and the stability are reduced due to the transverse swinging action force when the conversion device is subjected to energy conversion, and simultaneously, the service life of the conversion device is prolonged, and the maintenance cost is reduced.

Furthermore, the floating boxes are connected through a fixed rod, a rectangular support capable of swinging around the axis of the fixed rod is connected below the fixed rod, and a balancing weight is connected below the support. The setting of balancing weight can further improve the stability of flotation tank, makes the flotation tank form the unsteady of vertical direction, avoids the roll to the influence of flotation tank, and the balancing weight can contact with the swing board when receiving the ocean current to strike simultaneously, promotes the motion of swing board and improves energy conversion efficiency.

Furthermore, two side surfaces of the balancing weight are prism-shaped, corresponding flow guide holes with chamfers are arranged on the front surface and the rear surface of the balancing weight, and circulation holes are arranged between the flow guide holes. The arrangement of the flow guide holes and the circulation holes can adjust the swing of the balancing weight due to the fact that the balancing weight is impacted by sea waves, the swing range of the balancing weight can be reduced by water flow passing through the circulation holes when part of the sea waves are applied to the surface of the balancing weight, and the effect of the balancing weight on the stability of the buoyancy tank is improved.

Furthermore, the conversion device comprises three mutually matched and driven rotating shafts, one end of each rotating shaft is provided with a turbine coaxial with the rotating shaft, the other end of each rotating shaft is connected with a motor through a coupler, and the middle of each rotating shaft is provided with a worm. The turbines and the worms are arranged on the rotating shafts respectively, and the turbines and the worms on the three rotating shafts are arranged in a matched mode respectively, namely one rotating shaft rotates to drive the motor to generate electricity, and simultaneously, the second rotating shaft and the third rotating shaft which are arranged adjacently in a matched mode are driven to rotate respectively to enable the corresponding motor to generate electricity, efficient energy conversion is achieved, and the electricity generating efficiency is more than three times that of a conventional wave energy electricity generating device.

Furthermore, the tooth surface of the turbine is provided with M-shaped grooves which are connected in sequence, the grooves are arranged in parallel, and the bent parts of the grooves are connected through a communicating groove, the conversion device designed by the invention adopts three rotating shafts with the turbine and the worm, so that higher capacity conversion efficiency can be realized, but the tooth surface of the turbine and the worm is easy to wear in the transmission process due to the mutual matching of the three rotating shafts and the transmission of the turbine and the worm, the reduction of the tooth surface area and the contact area and the wear amount can be reduced by designing the M-shaped grooves, the M-shaped design can generate a temperature conduction effect on the friction temperature of the tooth surface, so that the tooth surface flash temperature generated when the worm and the worm are meshed is reduced, the tooth surface profile deformation is reduced, the transmission efficiency is kept constant, and the stress on the tooth surface of the worm and the tooth surface is balanced when the worm and the tooth surface is contacted through the combination of the communicating groove, the micro-pitting phenomenon on the tooth surface is avoided, lubricating oil can be contained in the grooves and the communicating grooves, a lubricating effect is provided for worm and gear transmission, abrasion and friction are further reduced, the conversion device is prevented from rusting, the impact resistance of the conversion device is improved, and the impact resistance is particularly impact influence caused by rolling.

Furthermore, the groove and the communicating groove have the same width and depth, the width of the groove is 0.3-0.5mm, and the depth of the groove is 0.1-0.25 mm.

Furthermore, the swing rod is connected with any rotating shaft in the conversion device in a matched mode, the swing rod is connected with the floating box through a bearing, the connection part of the swing rod and the floating box is sealed, the swing rod is fixedly connected with the swing plate, the swing plate can swing under the action of waves by the aid of the connection mode of the swing rod, the rotating shaft, the swing plate and the floating box, the swing rod transmits swing force to the conversion device to enable the conversion device to work, and the conversion from wave energy to mechanical energy and from mechanical energy to electric energy are achieved.

Furthermore, the front surface and the rear surface of the oscillating plate are provided with arc concave surfaces, so that the surface area of the oscillating plate can be increased, namely the stress area is increased, the oscillating amplitude and frequency of the oscillating plate are improved, the energy conversion efficiency of the device is improved, and higher energy conversion efficiency can be maintained even under smaller waves.

Furthermore, a connecting ring is arranged on the side of the buoyancy tank. Accessible connecting pipe and the rope body are connected unmanned monitoring ship and flotation tank, and conversion equipment in the flotation tank relies on the swing board to receive rivers to strike and produce the swing and carry out energy conversion and carry out the energy supply and realize that unmanned monitoring ship carries out monitoring work in the region into unmanned monitoring ship.

Compared with the prior art, the invention has the beneficial effects that: according to the device, the unmanned monitoring ship is connected with the buoyancy tank, and the buoyancy tank supplies energy to the unmanned monitoring ship to realize that the unmanned monitoring ship carries out monitoring work in a region; the device of the invention adopts the floating block and the two connecting rods to realize the triangular structure connection with the floating box, eliminates or reduces the transverse swinging action of irregular ocean waves on the floating box by utilizing the triangular stability principle, keeps the swinging plate at the bottom of the floating box swinging, ensures that the whole device has the self-regulation action, overcomes the problem that the conversion efficiency and the stability are reduced because the conversion device is subjected to the transverse swinging action force during energy conversion, is beneficial to prolonging the service life of the conversion device and reducing the maintenance cost.

Drawings

FIG. 1 is a schematic structural view of a wave energy absorbing device of an unmanned ship according to the present invention;

FIG. 2 is a top view of an unmanned surveillance vessel wave energy absorption apparatus of the present invention;

FIG. 3 is a schematic structural view of a weight member;

FIG. 4 is a cross-sectional view of the buoyancy tank;

FIG. 5 is a schematic view of the shaft connecting the motor and the worm gear and worm on the shaft;

FIG. 6 is a schematic structural view of the conversion device in a state where the shafts are engaged;

FIG. 7 is a partial microtopography image of a turbine tooth face of an experimental group in an embodiment of the present invention;

FIG. 8 is a partial microtopography image of a tooth surface of a turbine of a control group in an embodiment of the invention.

Description of reference numerals: 1. a buoyancy tank; 1 a-a connecting ring; 2-floating block; 3-a connecting rod; 4-sea level; 5-a swing lever; 6-a swing plate; 7-a scaffold; 8-a balancing weight; 801-flow-through pore; 802-flow guiding holes; 9-fixing the rod; 10-a conversion device; 10 a-a turbine; 10 b-a worm; 10 c-a groove; 10 d-a communicating groove; 10 e-a rotating shaft; 11-motor.

Detailed Description

The invention is described in further detail below with reference to examples and figures:

example 1:

as shown in fig. 1-6, an unmanned monitoring ship wave energy absorbing device comprises at least two buoyancy tanks 1 connected with each other, wherein a conversion device 10 is arranged in each buoyancy tank 1, the conversion device 10 is connected with a swing plate 6 arranged below each buoyancy tank 1 through a swing rod 5 arranged on the side of each buoyancy tank 1, a buoyancy block 2 is arranged on the side of each buoyancy tank 1, and the buoyancy block 2 is connected with the buoyancy tanks 1 in a triangular structure through two connecting rods 3. The device can connect the unmanned monitoring ship with the buoyancy tank 1, the conversion device 10 in the buoyancy tank 1 can convert energy into the unmanned monitoring ship for supplying energy by means of the swing generated by the impact of water flow on the swing plate 6, the unmanned monitoring ship can realize the monitoring work in the region, the device adopts the buoyancy block 2 and the two connecting rods 3 to realize the triangular structure connection with the buoyancy tank 1, the device can bear the impact force in irregular waves and keep stable by utilizing the triangular stability principle, the triangular structure between the buoyancy block 2 and the buoyancy tank 1 can eliminate or reduce the transverse swing action of the irregular ocean waves on the buoyancy tank 1, the swing plate 6 at the bottom of the buoyancy tank 1 is kept to swing, and the whole device has the self-adjusting function, thereby the buoyancy tank 1 is stably stressed, and the problem that the conversion efficiency and the stability are reduced because the conversion device 10 can bear the transverse swing action force during energy conversion is solved, while at the same time contributing to an increased service life of the conversion device 10 and reduced maintenance costs.

The buoyancy tanks 1 are connected through a fixing rod 9, a rectangular support 7 capable of swinging around the axis of the fixing rod 9 is connected below the fixing rod 9, and a balancing weight 8 is connected below the support 7. The setting of balancing weight 8 can further improve the stability of flotation tank 1, makes flotation tank 1 form the unsteady of vertical direction, avoids the roll to flotation tank 1's influence, and balancing weight 8 can contact with swing board 6 when receiving the ocean current to strike simultaneously, promotes swing board 6 motion and improves energy conversion efficiency.

Two side surfaces of the balancing weight 8 are prism-shaped, the front and back surfaces of the balancing weight 8 are provided with corresponding flow guiding holes 802 with chamfers, and a circulation hole 801 is arranged between the flow guiding holes 802. The arrangement of the flow guide holes 802 and the flow holes 801 impacts the balancing weight 8 through sea waves to enable the balancing weight 8 to swing, so that when part of sea waves act on the surface of the balancing weight 8, water flow can penetrate through the flow holes 801 to reduce the swing amplitude of the balancing weight 8, and the effect of the balancing weight 8 on the stability of the buoyancy tank 1 is improved.

The conversion device 10 comprises three mutually matched and driven rotating shafts 10e, one end of each rotating shaft 10e is provided with a turbine 10a coaxial with the rotating shaft 10e, the other end of each rotating shaft 10e is connected with a motor 11 through a coupler, and the middle of each rotating shaft 10e is provided with a worm 10 b. The turbine 10a and the worm 10b are respectively arranged on the rotating shafts 10e, and the turbine 10a and the worm 10b on the three rotating shafts 10e are respectively arranged in a matching manner, namely, one rotating shaft 10e rotates to drive the motor to generate electricity 11, and simultaneously, the second rotating shaft 10e and the third rotating shaft 10e which are adjacently arranged in a matching manner are respectively driven to rotate to enable the corresponding motor 11 to generate electricity, so that high-efficiency energy conversion is realized, and the electricity generating efficiency is more than three times that of a conventional wave energy electricity generating device.

The tooth surface of the turbine 10a is provided with M-shaped grooves 10c which are sequentially connected, the grooves 10c are arranged in parallel, and the bent parts of the grooves 10c are connected through the communicating grooves 10d, the conversion device 10 designed by the invention adopts three rotating shafts 10e with the turbine 10a and the worm 10b to realize higher capacity conversion efficiency, but the tooth surface of the turbine worm is easy to wear in the transmission process due to the mutual matching of the three rotating shafts 10e and the turbine worm transmission, the reduction of the tooth surface area and the contact area and the wear amount can be reduced by designing the M-shaped grooves 10c, the M-shaped design can generate a temperature conduction effect on the tooth surface friction temperature to reduce the tooth surface flash temperature generated when the turbine worm is meshed, the tooth profile deformation is reduced, the transmission efficiency is kept constant, and the stress on the tooth surface of the turbine worm is balanced when the tooth surface is contacted through the combination arrangement of the communicating grooves 10d and the M-shaped grooves 10c, the gear surface is prevented from micro-crack and transverse or micro-material transfer, namely micro-pitting corrosion on the gear surface is avoided, lubricating oil can be contained in the groove 10c and the communicating groove 10d to provide a lubricating effect for worm gear transmission, abrasion and friction are further reduced, the conversion device 10 is prevented from rusting, the impact resistance of the conversion device 10 is improved, and the impact influence caused by rolling is particularly high, the gear surface abrasion between the worm gears can be reduced through the design, the micro-pitting corrosion phenomenon is avoided, the worm gear transmission efficiency is kept constant, and the conversion device 10 works efficiently.

The groove 10c and the communicating groove 10d have the same width and depth, the groove 10c has a width of 0.3-0.5mm, preferably 0.35mm, and a depth of 0.1-0.25mm, preferably 0.15 mm.

The swing rod 5 is connected with any one rotating shaft 10e in the conversion device 10 in a matching mode, the swing rod 5 is connected with the floating box 1 through a bearing, the connection part of the swing rod 5 and the floating box 1 is sealed, the swing rod 5 is fixedly connected with the swing plate 6, the swing plate 6 can swing under the action of waves by arranging the connection mode of the swing rod 5, the rotating shaft 10e, the swing plate 6 and the floating box 1, the swing force is transmitted to the conversion device 10 by the swing rod 5, the conversion device 10 works, namely the wave energy is converted into the mechanical energy, and the mechanical energy is converted into the electric energy.

The front and the rear surfaces of the oscillating plate 6 are provided with arc concave surfaces, so that the surface area of the oscillating plate 6 can be increased, namely the stress area is increased, the oscillating amplitude and frequency of the oscillating plate 6 are improved, the energy conversion efficiency of the device is improved, and higher energy conversion efficiency can be kept even under smaller waves.

The side of the buoyancy tank 1 is provided with a connecting ring 1 a. The unmanned monitoring ship can be connected with the buoyancy tank 1 through the connecting pipe 1a and the rope body, and the conversion device 10 in the buoyancy tank 1 can be used for converting energy into the unmanned monitoring ship to supply energy by means of the swing plate 6 due to water flow impact so as to realize the monitoring work of the unmanned monitoring ship in the region.

Example 2:

when the wave energy absorbing device of the unmanned monitoring ship is actually used: place flotation tank 1 on sea 4, install parts such as connection swinging arms 5, swing board 6, support 7, balancing weight 8 in proper order, be connected unmanned monitoring ship and flotation tank 1 through go-between 1a and the rope body, conversion equipment 10 in flotation tank 1 relies on swing board 6 to receive rivers to strike and produces the swing and carry out energy conversion and unmanned monitoring ship and carry out the energy supply and realize that unmanned monitoring ship carries out monitoring work in the region.

Meanwhile, the invention also carries out fatigue tests on the worm gear (experimental group) and the worm gear (comparison group) with the same specification and without the groove 10c and the communicating groove 10d, the surface roughness of the two groups of worm gears is Ra0.6, the test time is 1140h, and the cycle number is 1.23 multiplied by 10⁸And 130% accelerated fatigue test was carried out for 400 hours with cycle number of 0.424X 10⁸After the fatigue test, the local micro-topography images (enlarged by 200 times) of the turbine tooth surfaces of the experimental group and the control group are respectively obtained, the local micro-topography of the turbine tooth surfaces of the experimental group is shown in fig. 7, the local micro-topography of the turbine tooth surfaces of the control group is shown in fig. 8, and it can be seen that the turbine tooth surfaces of the experimental group have no micro-pitting and the turbine tooth surfaces of the control group have micro-pitting.

The above embodiments are merely illustrative, and not restrictive, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims

1. The utility model provides an unmanned monitoring ship wave energy absorbing device, includes two at least interconnect's flotation tank (1), flotation tank (1) in be equipped with conversion equipment (10), conversion equipment (10) through rocking beam (5) of flotation tank (1) side with set up swing plate (6) in flotation tank (1) below and be connected its characterized in that: a floating block (2) is arranged on the side of the floating box (1), and the floating block (2) is connected with the floating box (1) in a triangular structure through two connecting rods (3); the floating boxes (1) are connected through a fixed rod (9), a rectangular support (7) capable of swinging around the axis of the fixed rod (9) is connected below the fixed rod (9), and a balancing weight (8) is connected below the support (7); conversion equipment (10) include three driven pivot (10e) of mutually supporting, pivot (10e) one end be equipped with pivot (10e) coaxial turbine (10a), the other end passes through coupling joint motor (11), pivot (10e) middle part be equipped with worm (10 b).

2. An unmanned surveillance vessel wave energy absorption device according to claim 1, wherein: the two side surfaces of the balancing weight (8) are prism-shaped, the front surface and the rear surface of the balancing weight (8) are provided with corresponding flow guide holes (802) with chamfers, and a circulation hole (801) is arranged between the flow guide holes (802).

3. An unmanned surveillance vessel wave energy absorption device according to claim 1, wherein: the tooth surface of the turbine (10a) is provided with M-shaped grooves (10c) which are sequentially connected, the grooves (10c) are arranged in parallel, and the bent parts of the grooves (10c) are connected through a communicating groove (10 d).

4. An unmanned surveillance vessel wave energy absorption device according to claim 3, wherein: the groove (10c) and the communicating groove (10d) are equal in width and depth, the groove width of the groove (10c) is 0.3-0.5mm, and the groove depth is 0.1-0.25 mm.

5. An unmanned surveillance vessel wave energy absorption device according to claim 1, wherein: swing lever (5) and conversion equipment (10) in arbitrary pivot (10e) cooperation be connected, swing lever (5) are connected and junction sealing process through bearing and flotation tank (1), swing lever (5) and swing board (6) rigid coupling.

6. An unmanned surveillance vessel wave energy absorption device according to claim 1, wherein: the front and the back of the swing plate (6) are provided with arc concave surfaces.

7. An unmanned surveillance vessel wave energy absorption device according to claim 1, wherein: and a connecting ring (1a) is arranged on the side of the floating box (1).