CN106499571A - Wave power generation device and method - Google Patents

Abstract

The invention discloses a kind of Wave power generation device and method, including located at supporting table waterborne, the controller being located in supporting table, the toroid buoy located at supporting on edge of table, TRT, the little trapezoidal rails of going to the bottom in supporting table, 2 bracing frames for supporting trapezoidal rails upper end, the casing being located in trapezoidal rails, some hawsers in supporting table, the drawstring on casing and the lever above supporting table；Lever one end is connected with drawstring, and the lever other end is connected with TRT by connecting rope；Every hawser lower end is equipped with anchor.The present invention has the characteristics of applied widely, energy conversion efficiency is high, safety is good.

Description

Ocean wave power generation device and method

technical field

The invention relates to the technical field of wave power generation, in particular to a wave power generation device and method with high energy conversion efficiency and good safety.

Background technique

The development and utilization of marine energy is the direction of energy research. Under the situation that the earth's mineral energy is gradually depleted and the environmental situation is deteriorating, how to effectively use the abundant and renewable marine resources is very important;

Wave energy is the cleanest renewable resource. The power of wave energy dissipated continuously along the coastline in the world reaches 27×105MW, and the technically available wave energy potential is 10×105MW.

The existing wave power generation devices have the disadvantages of high price, low energy conversion efficiency and limited installation area.

Contents of the invention

The object of the present invention is to provide a wave power generation device and method with high energy conversion efficiency and good safety in order to overcome the problems of high price and low energy conversion efficiency of the wave power generation device in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A wave power generation device, comprising a support platform on the water, a controller on the support platform, an annular buoy on the edge of the support platform, a power generation device, a trapezoidal guide rail with a small lower bottom on the support platform, Two support frames on the upper end of the ladder-shaped guide rail, a box body on the ladder-shaped guide rail, several cables on the support platform, a pull rope on the box body and a lever above the support platform; one end of the lever is connected to the pull The other end of the lever is connected to the power generating device through the connecting rope; the lower end of each cable is provided with an anchor;

The lower part of the support platform is provided with a propeller and a rotating motor for driving the propeller to rotate, and also includes a height sensor and a wind direction sensor arranged on the support platform. , the middle part of the trapezoidal guide rail is fixedly connected with the supporting platform, and the controller is electrically connected with the rotating motor, the height sensor, the wind direction sensor and the two cylinders respectively.

The box converts the force of the wave into a stretching force on the rope, amplifies the stretching force through the lever, and converts the mechanical energy into electrical energy that can be stored through the power generation device.

Each anchor is fixed to the bottom soil layer or rock layer, the support platform and 2 support frames provide stable support for the trapezoidal guide rail, the ring buoy makes the support platform suspend on the water surface, the height sensor detects the height of the support platform in real time, and the wind direction sensor is used to detect the wind direction , the amplitude threshold W is set in the controller, and the controller calculates the height change range B of the support platform within a unit time t;

When B≥W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is reduced to 72%A to 79%A;

When B<W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is raised to 105%A to 110%A;

When 1.5W<B≤2.5W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders to reduce the height of the upper ends of the two support frames to 40%A to 50%A;

When B≥2.5W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is lowered below the water surface;

During the power generation process, the wind direction sensor detects the wind direction, and the controller controls the rotating motor to drive the propeller to rotate according to the current wind direction, so that the moving direction of the box on the trapezoidal guide rail is always consistent with the wind direction.

The invention can not only perform normal power generation, but also is not easy to be damaged by wind and waves, and has better safety.

The power generation device can be arranged on the shore, on the breakwater or on the water platform.

Therefore, the present invention has the characteristics of wide application range, high energy conversion efficiency and good safety.

As a preference, both ends of the trapezoidal guide rail are provided with baffles, springs are provided on the lower sides of the two baffles, and the box cooperates with the guide rails through 2 sliders; the lever includes a support seat and a rod body provided on the support seat, The rod body includes a first rod body segment and a second rod body segment; the length of the first rod body segment is greater than that of the second rod body segment, and the pull cord is connected to the end of the first rod body segment.

When the box is pushed to the baffle at the upper end of the two guide rails by the wind and waves, the spring provides a reverse thrust for the box, thereby speeding up the falling speed of the box and improving the power generation efficiency.

Preferably, the power generating device includes a rack, a return spring connected to the rack, a gear, two ratchets matched with the gear, and two generators; The two ratchets cooperate with each other, and the rotating shafts of the two ratchets are respectively connected with the rotors of the two generators.

When the pulling force of the connecting rope was greater than the thrust of the back-moving spring, the rack moved to the right, the gear rotated clockwise, and the gear drove the ratchet to rotate through the ratchet. The rotating shaft of the ratchet drives the rotor of a generator to rotate, and the generator generates electricity;

When the pulling force of the connecting rope was less than the thrust of the back-moving spring, the tooth bar moved to the left, the gear rotated counterclockwise, and the gear drove another ratchet to rotate through the ratchet. The rotating shaft of another ratchet drives the rotor of another generator to rotate, and the generator generates electricity.

As preferably, each cable includes an elastic tube with a closed lower end, and several metal sleeves inserted in sequence on the elastic tube; the upper end of the elastic tube of each cable is connected with the outlet pipe of the air pump, and each elastic tube has An air pressure sensor is provided, and the air pump and each air pressure sensor are electrically connected to the controller;

The metal sleeve includes a tapered insertion section located at the lower part of the metal sleeve, an upward flared horn section located at the upper part of the metal sleeve for matching with the insertion section of the adjacent metal sleeve, and a horn section located at the insertion section and the horn. Connecting segments between segments.

Preferably, a water inlet pump, a water discharge pump and a ballast tank are also provided on the support frame, and both the water inlet pump and the water discharge pump communicate with the ballast tank through water pipes, and both the water inlet pump and the water discharge pump are electrically connected to the controller.

A method for a wave power generating device, comprising the steps of:

(6-1) Put the support platform on the water surface, make each cable enter the water, and each anchor is fixed on the fixture at the bottom of the water;

(6-2) The wave drives the box to move along the two guide rails, and the pull rope drives one end of the lever to fluctuate up and down, and the lever amplifies the force of the pull rope and transmits it to the power generation device through the connecting rope;

(6-3) The controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is A;

(6-4) The height sensor detects the height of the supporting platform in real time, and the controller is provided with an amplitude threshold W, and the controller calculates the height variation range B of the supporting platform in the unit time t;

When B≥W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is reduced to 72%A to 79%A;

When B<W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is raised to 105%A to 110%A;

When 1.5W<B≤2.5W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders to reduce the height of the upper ends of the two support frames to 40%A to 50%A;

When B≥2.5W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is lowered below the water surface;

During the power generation process, the wind direction sensor detects the wind direction, and the controller controls the rotating motor to drive the propeller to rotate according to the current wind direction, so that the moving direction of the box on the trapezoidal guide rail is always consistent with the wind direction.

As preferably, each cable includes an elastic tube with a closed lower end, and several metal sleeves inserted in sequence on the elastic tube; the upper end of the elastic tube of each cable is connected with the outlet pipe of the air pump, and each elastic tube has An air pressure sensor is provided, and the air pump and each air pressure sensor are electrically connected to the controller; it is characterized in that the step (6-1) also includes a control step for each cable:

(7-1) Set the standard air pressure range of the elastic tube in the controller, the controller controls the air pump to inflate the elastic tube, the elastic tube expands after inflation, and the air pressure sensor in the elastic tube detects the air pressure in the elastic tube;

(7-2) When the air pressure in the elastic tube reaches the upper limit of the standard air pressure range, the controller controls the air pump to stop inflating; the tube wall of the elastic tube is squeezed tightly with each metal casing, and the support table is stably fixed;

(7-3) When the air pressure in the elastic tube reaches the lower limit of the standard air pressure range, the controller controls the air pump to inflate the elastic tube;

(7-4) Steps (7-2) to (7-3) are repeated.

As a preference, a water inlet pump, a water discharge pump and a ballast tank are also provided on the support frame, and both the water inlet pump and the water discharge pump communicate with the ballast tank through water pipes, and both the water inlet pump and the water discharge pump are electrically connected to the controller, and the characteristics are:

(8-1) When B≥2.5W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is lowered below the water surface;

And the controller controls the water inlet pump to pump water into the ballast tank. After the water inlet pump pumping time reaches T1, the controller controls the water inlet pump to stop working;

(8-2) When B<2.5W, the controller controls the drainage pump to pump water out of the ballast tank, and after the drainage time of the drainage pump reaches T2, the controller controls the drainage pump to stop working;

Go to step (6-3).

Therefore, the invention has the following beneficial effects: wide application range, high energy conversion efficiency and good safety.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is a kind of structural representation of support platform of the present invention;

Fig. 3 is a kind of structural representation of gear, ratchet and ratchet of the present invention;

Fig. 4 is a kind of structural representation of metal casing of the present invention;

Fig. 5 is a kind of structural representation of cable rope of the present invention;

Fig. 6 is a kind of flowchart of embodiment 1 of the present invention;

Fig. 7 is a functional block diagram of the present invention.

In the figure: support platform 1, controller 2, annular buoy 3, trapezoidal guide rail 4, support frame 5, cable 6, lever 7, box body 8, rotating motor 9, height sensor 10, wind direction sensor 11, cylinder 12, baffle plate 13. Spring 14, water inlet pump 15, drain pump 16, ballast tank 17, pull rope 18, gear 41, ratchet 42, pawl 43, support seat 71, rod body 72, metal sleeve 81, air pump 82, tapered insertion Segment 83 , horn segment 84 , connecting segment 85 , air pressure sensor 86 , first rod body segment 721 , and second rod body segment 722 .

detailed description

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

Example 1

The embodiment shown in Fig. 1, Fig. 2 and Fig. 7 is a kind of wave power generation device including a support platform 1 on the water, a controller 2 on the support platform, an annular buoy 3 on the edge of the support platform, Power generation device, trapezoidal guide rail 4 with a small lower bottom on the support platform, 2 support frames 5 for supporting the upper end of the ladder guide rail, box body 8 on the trapezoid guide rail, 4 cables 6 on the support platform 1. The stay rope on the box body and the lever 7 positioned above the support platform; one end of the lever is connected with the stay rope 18, and the other end of the lever is connected with the power generation device through a connecting rope; each cable lower end is provided with an anchor;

The lower part of the support platform is provided with a propeller and a rotating motor 9 for driving the propeller to rotate, and also includes a height sensor 10 and a wind direction sensor 11 arranged on the support platform. The telescopic rod connection, the middle part of the ladder guide rail is fixedly connected with the support platform, the left and right parts of the ladder guide rail are in the casing structure, the outer sleeves on the left and right parts of the ladder guide rail are connected with the middle part of the ladder guide rail, the left and right parts of the ladder guide rail The inner sleeves of the inner casing are respectively connected with the upper ends of the two supporting columns, and the controller is respectively electrically connected with the rotating motor, the height sensor, the wind direction sensor and the two cylinders.

Both ends of the trapezoidal guide rail are provided with baffles 13, and springs 14 are provided on the lower sides of the two baffles, and the box cooperates with the guide rails through two sliders; the lever includes a support seat 71 and a rod body 72 provided on the support seat , the rod body includes a first rod body segment 721 and a second rod body segment 722; the length of the first rod body segment is greater than the length of the second rod body segment, and the pull cord is connected to the end of the first rod body segment.

As shown in Figure 3, the power generation device includes a rack, a return spring connected to the rack, a gear 41, two ratchets 42 matched with the gear, and two generators; the rack and the gear are meshed, and the gear passes through two ratchets. 43 are respectively matched with two ratchets, and the rotating shafts of the two ratchets are respectively connected with the rotors of the two generators.

As shown in Figure 6, a method for an ocean wave power generation device includes the following steps:

Step 100, place the generator

Put the supporting platform on the water surface, make each cable enter the water, and each anchor is fixed on the fixed object at the bottom of the water;

Step 200, start generating electricity

The wave drives the box to move along the two guide rails, and the pull rope drives one end of the lever to fluctuate up and down, and the lever amplifies the force of the pull rope and transmits it to the power generation device through the connecting rope;

Step 300, setting the height of the support frame

The controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is A=1 meter;

Step 400, dynamically adjust the height of the support frame

The height sensor detects the height of the support platform in real time, and the controller is provided with an amplitude threshold W=80 cm, and the controller calculates the height change range B of the support platform within t=1 minute per unit time;

When B≥W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, reducing the height of the upper ends of the two support frames to 73% of A;

When B<W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is raised to 105%A;

When 1.5W<B≤2.5W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders to reduce the height of the upper ends of the two support frames to 40%A;

When B≥2.5W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is lowered below the water surface;

During the power generation process, the wind direction sensor detects the wind direction, and the controller controls the rotating motor to drive the propeller to rotate according to the current wind direction, so that the moving direction of the box on the trapezoidal guide rail is always consistent with the wind direction.

Example 2

Embodiment 2 includes all the structures and steps of Embodiment 1, as shown in Figure 4, Figure 5, and Figure 7, each cable in Embodiment 2 includes an elastic tube with a closed lower end, a plurality of sequentially arranged on the elastic tube Metal casing 81 plugged in; the elastic tube upper end of each cable is connected with the outlet pipe of air pump 82, and each elastic tube is provided with an air pressure sensor 86, and the air pump and each air pressure sensor are electrically connected with the controller.

The metal sleeve includes a tapered insertion section 83 located at the lower part of the metal sleeve, an upward flared horn section 84 positioned at the upper part of the metal sleeve for matching with the insertion section of the adjacent metal sleeve, and a horn section 84 located between the insertion section and the horn. Connect segment 85 between segments.

The step 100 of embodiment 1 also includes a control step for each cable:

(7-1) Set the standard air pressure range of the elastic tube in the controller, the controller controls the air pump to inflate the elastic tube, the elastic tube expands after inflation, and the air pressure sensor in the elastic tube detects the air pressure in the elastic tube;

(7-2) When the air pressure in the elastic tube reaches the upper limit of the standard air pressure range, the controller controls the air pump to stop inflating; the tube wall of the elastic tube is squeezed tightly with each metal casing, and the support table is stably fixed;

(7-3) When the air pressure in the elastic tube reaches the lower limit of the standard air pressure range, the controller controls the air pump to inflate the elastic tube;

(7-4) Steps (7-2) to (7-3) are repeated.

Example 3

Embodiment 3 includes all the structures and steps of Embodiment 1. The support platform of Embodiment 3 is also provided with a water inlet pump 15, a drainage pump 16 and a ballast tank 17 on the support frame as shown in Figure 2 and Figure 7 , both the water inlet pump and the water discharge pump are connected to the ballast tank through water pipes, and both the water inlet pump and the water discharge pump are electrically connected to the controller. ;

(8-1) When B≥2.5W, the controller controls the expansion and contraction of the telescopic rods of the two cylinders, so that the height of the upper ends of the two support frames is lowered below the water surface;

And the controller controls the water inlet pump to pump water into the ballast tank, after the water inlet pump pumping time reaches T1=3 minutes, the controller controls the water inlet pump to stop working;

(8-2) When B<2.5W, the controller controls the drainage pump to pump water out of the ballast tank, and after the drainage time of the drainage pump reaches T2=4 minutes, the controller controls the drainage pump to stop working;

Go to step 300.

It should be understood that this embodiment is only used to illustrate the present invention but not to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims (8)

1. a kind of Wave power generation device, is characterized in that, including located at supporting table (1) waterborne, the controller in supporting table (2), located at the toroid buoy (3), TRT, the trapezoidal rails (4) for going to the bottom little in the supporting table supported on edge of table, For supporting 2 bracing frames (5) of the trapezoidal rails upper end, casing (8) in the trapezoidal rails, some in supporting table Bar hawser (6), the drawstring on casing and the lever (7) above supporting table；Lever one end is connected with drawstring (18), thick stick The bar other end is connected with TRT by connecting rope；Every hawser lower end is equipped with anchor；

Supporting table bottom is provided with propeller and the rotary electric machine (9) for driving propeller rotational, also includes in supporting table Height sensor (10) and wind transducer (11), 2 bracing frame bottoms respectively with two cylinders in supporting table (12) expansion link connection, be fixedly connected with supporting table in the middle part of trapezoidal rails, controller respectively with rotary electric machine, highly sensing Device, wind transducer and 2 cylinder electrical connections.

2. Wave power generation device according to claim 1, is characterized in that, trapezoidal rails two ends are equipped with baffle plate (13), two Spring (14) is equipped with individual baffle plate downside, and casing is engaged with guide rail by 2 slide blocks；Lever include support base (71) and The body of rod (72) being provided with support base, the body of rod include the first body of rod section (721) and the second body of rod section (722)；First body of rod section Length of the length more than the second body of rod section, the drawstring are connected with the first body of rod section end.

3. Wave power generation device according to claim 1, is characterized in that, the TRT includes that tooth bar and tooth bar connect Two ratchets (42) and two electromotors that back-moving spring, gear (41) and the gear for connecing coordinates；Rack and pinion is meshed, Gear is engaged with two ratchets respectively by two ratchets (43), the rotating shaft of two ratchets rotor respectively with two electromotors Connection.

4. Wave power generation device according to claim 1, is characterized in that, every hawser includes the elasticity of lower end closed Pipe, the metal canula (81) of several grafting successively on the elastic tube；The elastic tube upper end of every hawser is and air pump (82) escape pipe connection, is equipped with baroceptor (86) in every elastic tube, air pump and each baroceptor with control Device electrical connection processed；

The metal canula include taper inserting paragraph (83) positioned at metal canula bottom, be located at metal canula top for Loudspeaker section (84) that what the inserting paragraph of adjacent metal canula was engaged open upwards and between inserting paragraph and loudspeaker section Linkage section (85).

5. the Wave power generation device according to claim 1 or 2 or 3 or 4, is characterized in that, be additionally provided with intake pump on bracing frame (15), draining pump (16) and ballast box (17), intake pump and draining pump are by water pipe and ballast box UNICOM, intake pump and draining Pump is electrically connected with the controller.

6. a kind of method of the Wave power generation device based on described in claim 2, is characterized in that, comprise the steps：

(6-1) supporting table is put on the water surface, each bar hawser is entered under water, each is anchored on the fixture at the bottom；

(6-2) wave drives casing to move along 2 guide rails, and drawstring drives lever one end to fluctuate up and down, and the power of drawstring is put by lever Greatly and TRT is passed to by connecting rope；

(6-3) expansion link of 2 cylinders of controller control stretches, and the height for making 2 bracing frame upper ends is A；

(6-4) height of height sensor real-time detection supporting table, is provided with amplitude threshold W, controller unit of account in controller Height change amplitude B of time t inner support platform；

As B >=W, controller controls the expansion link of 2 cylinders and stretches, make the height reduction of 2 bracing frame upper ends to 72%A extremely 79%A；

As B ＜ W, controller controls the expansion link of 2 cylinders and stretches, and makes the height of 2 bracing frame upper ends be increased to 105%A To 110%A；

As 1.5W ＜ B≤2.5W, controller controls the expansion link of 2 cylinders and stretches, and makes the height reduction of 2 bracing frame upper ends To 40%A to 50%A；

As B >=2.5W, controller controls the expansion link of 2 cylinders and stretches, and makes the height reduction of 2 bracing frame upper ends to the water surface Under；

In power generation process, wind transducer detects that wind direction, controller drive spiral according to current wind direction, control rotary electric machine Oar rotates, so that casing moving direction in trapezoidal rails is consistent with wind direction all the time.

7. the method for Wave power generation device according to claim 6, every hawser include the elastic tube of lower end closed, set The metal canula of several grafting successively on the elastic tube；The elastic tube upper end of every hawser is connected with the escape pipe of air pump Connect, in every elastic tube, be equipped with baroceptor, air pump and each baroceptor are electrically connected with the controller；Its feature It is in step (6-1), also to include the rate-determining steps for every hawser：

(7-1) the standard pressure scope of elastic tube is set in the controller, and controller controls air pump and inflates to elastic tube, elastic tube Expand after inflation, the air pressure in baroceptor detection elastic tube in elastic tube；

(7-2) when the air pressure in elastic tube reaches the higher limit of standard pressure scope, controller control air pump stops inflation；Bullet Property pipe tube wall and each metal canula jam-packed, supporting table stably fixed；

(7-3) when the air pressure in elastic tube reaches the lower limit of standard pressure scope, controller control air pump is filled to elastic tube Gas；

(7-4) repeat step (7-2) to (7-3).

8. the method for the Wave power generation device according to claim 6 or 7, be additionally provided with bracing frame intake pump, draining pump and Ballast box, intake pump and draining pump are electrically connected with the controller by water pipe and ballast box UNICOM, intake pump and draining pump, its It is characterized in that,

(8-1) as B >=2.5W, controller controls the expansion link of 2 cylinders and stretches, and makes the height reduction of 2 bracing frame upper ends To the water surface；

And controller control intake pump water is extracted in ballast box, after intake pump time of pumping reaches T1, controller control into Water pump quits work；

(8-2) as B ＜ 2.5W, water is extracted out from ballast box by controller control draining pump, and draining pump water discharge time reaches T2 Afterwards, controller control draining pump quits work；

Proceed to step (6-3).