CN112983723B - No dead point's oscillating hydrofoil formula tidal current energy power generation structure - Google Patents
No dead point's oscillating hydrofoil formula tidal current energy power generation structure Download PDFInfo
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- CN112983723B CN112983723B CN202110232038.1A CN202110232038A CN112983723B CN 112983723 B CN112983723 B CN 112983723B CN 202110232038 A CN202110232038 A CN 202110232038A CN 112983723 B CN112983723 B CN 112983723B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
- F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/1805—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
- F03B13/181—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation
- F03B13/1815—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation with an up-and-down movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Abstract
An oscillating hydrofoil type tidal current energy power generation structure without dead points. The existing hydrofoil type tidal current energy power generation device has no solution to overcome the dead point problem. The vertical plate is vertically arranged, the transmission rod, the rotating wheel and the elastic sliding block body are arranged on the same side face of the vertical plate, the elastic sliding block body is in sliding fit with the vertical plate, and the rotating wheel is arranged below the elastic sliding block body; the one end of the long body of rod articulates there are two water wing pieces, and the long body of rod is articulated mutually with the riser through first axis body, and the other end of the long body of rod is articulated mutually with the one end of the well body of rod through the second axis body, and the third axis body passes in proper order and sets up on the lateral surface of runner behind the other end of the well body of rod and short body one end, and the other end of the short body of rod is articulated mutually with the elastic sliding block body through the fourth axis body. The invention is used for tidal current power generation.
Description
The technical field is as follows:
the invention particularly relates to a dead-point-free oscillating hydrofoil type tidal current energy power generation structure.
Background art:
the tidal current energy power generation device mainly adopts three forms: horizontal axis, vertical axis and oscillating hydrofoil. Among them, the horizontal axis type and vertical axis type water turbines are the main modes adopted by the current large tidal current energy power generation equipment. However, the water turbine has a complex structure, high installation and maintenance costs and high requirements for water depth, and thus the installation and application of the water turbine are greatly limited. The oscillating hydrofoil type power generation device utilizes hydrofoils with certain attack angles to enable the front side and the back side to form pressure difference, generate heave and pitching motion, and drive a generator to convert mechanical energy into electric energy. The oscillating hydrofoil type power generation device has been widely researched due to the advantages of high power generation efficiency, suitability for shallow water, small influence on the environment, stable output power, low requirement on the flow speed and the like.
The hydrofoil motion can be divided into heave motion and pitch motion, the hydrofoil power generation device converts the reciprocating heave motion of the hydrofoil into unidirectional rotation so as to drive a generator to generate power, and the main adopted mechanical structure is a crank rocker mechanism. However, when the hydrofoil drives the rocker to move, the connecting rod mechanism has a dead point position, and the existing hydrofoil type tidal current energy power generation device has no good solution to overcome the dead point problem.
The common method for overcoming the dead point of the device is to install a flywheel additionally or adopt a staggered arrangement mechanism. When the dead point is overcome by using the flywheel, the flywheel has large rotational inertia, and needs larger starting torque when the mechanism is started, so the required starting flow rate is large, the application sea area of the power generation device is limited, and the flywheel needs to be specially processed through accurate calculation in the design of the flywheel, so that the replaceability is poor. The link mechanisms used to transfer the hydrofoil heave and pitch motions often have a high requirement on the spatial position, so that the size of the flywheel cannot be designed at will, which greatly increases the design difficulty. When the dead points are overcome by adopting the staggered arrangement mode, the mechanism cannot keep complete symmetry, and the staggered arrangement mode is limited in the application occasions needing the symmetrical mechanism. Therefore, how to overcome the dead point of the structure by a simple mechanism is a problem to be solved in the oscillating hydrofoil power generation device.
The invention content is as follows:
in order to solve the above-mentioned problems in the background art, an object of the present invention is to provide an oscillating hydrofoil type tidal current energy power generation structure without a dead point.
A non-dead-point oscillating hydrofoil type tidal current energy power generation structure comprises a vertical plate, a transmission rod, a rotating wheel, an elastic sliding block body and two hydrofoil pieces, wherein the vertical plate is vertically arranged;
the transmission rod comprises a long rod body, a middle rod body, a short rod body, a first shaft body, a second shaft body, a third shaft body and a fourth shaft body, wherein one end of the long rod body is hinged with two water wing pieces, the long rod body is hinged with the vertical plate through the first shaft body, the other end of the long rod body is hinged with one end of the middle rod body through the second shaft body, the third axis body passes the other end of well body of rod and short-bar body one end in proper order and sets up on the lateral surface of runner, and the other end of short-bar body is articulated mutually through fourth axis body and elastic sliding block body, and the distance between runner wheel center to the fourth axis body axis, the distance between runner wheel center to the second axis body axis and the distance between runner wheel center to the first axis body decrease progressively in proper order.
As a preferable scheme: the elastic sliding block body comprises an upper sliding seat, a linear optical axis, a sliding block, a lower sliding seat, an upper spring and a lower spring, wherein the upper sliding seat and the lower sliding seat are sequentially arranged on the side face of the vertical plate from top to bottom, the linear optical axis is arranged between the upper sliding seat and the lower sliding seat, the sliding block is sleeved on the linear optical axis and reciprocates along the length direction of the linear optical axis, the upper spring is sleeved on the linear optical axis and is located between the upper sliding seat and the sliding block, and the lower spring is sleeved on the linear optical axis and is located between the lower sliding seat and the sliding block.
As a preferable scheme: the side of riser is processed and is had the first arc slide that cooperates the upper sliding seat, and the side of riser is processed and is had the second arc slide that cooperates the lower sliding seat.
As a preferable scheme: the central angles corresponding to the first arc-shaped slide way and the second arc-shaped slide way are equal, and the central angle corresponding to the first arc-shaped slide way is smaller than or equal to 15 degrees.
As a preferable scheme: the length ratio of the long rod body to the middle rod body to the short rod body is 9.
As a preferable scheme: the one end processing of the long body of rod has the connecting hole, wears to be equipped with the fifth axis body in the connecting hole, and the both ends of fifth axis body respectively are connected with a water wing piece.
As a preferable scheme: the hydrofoil piece is a long strip-shaped piece body, the longitudinal section of the hydrofoil piece is in a shape of a willow leaf, one side of the hydrofoil piece is a wide-head side, the other side of the hydrofoil piece is a narrow-head side, an inner hole matched with the fifth shaft body is machined in the hydrofoil piece along the length direction of the hydrofoil piece, and the inner hole is arranged close to the wide-head side of the hydrofoil piece.
Compared with the prior art, the invention has the beneficial effects that:
1. the vertical plate, the transmission rod, the rotating wheel, the elastic sliding block body and the two hydrofoils are mutually matched to form an eccentric structure system, the eccentric structure system can completely overcome the dead point problem between the transmission rod and the rotating wheel, and when the transmission rod is positioned at the dead point position, a spring force action line does not pass through the center of the rotating wheel through an angle difference formed by a linear optical axis in the elastic sliding block body and the vertical direction, so that a moment for overcoming the dead point is generated, the dead point position in the eccentric structure system is overcome by the elastic force generated by the elastic sliding block body, and the oscillation process that the whole course of the two hydrofoils has no dead point is ensured.
2. The invention can realize self-starting, a crank-slider structural form is formed between the elastic slider body and the short rod body, and the crank-slider structural form can enable the transmission rod, the rotating wheel and the two hydrofoils to be in non-dead-point positions under a natural state without additional excitation, namely when the invention is in a static state, the hydrofoils have certain attack angles. The present invention enables self-priming without additional excitation once the minimum priming flow rate is reached.
3. The device adopts a pure mechanical design, has a simple structure, overcomes the defect that a dead point structure is only connected through each shaft body in the transmission rod, reduces the manufacturing cost, is convenient to integrally disassemble and assemble, and is easy to realize modular assembly.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a first schematic view of the present invention;
FIG. 3 is a second front view of the present invention, in which the two-way arrows indicate the moving direction of the upper slide carriage, the positions of the two upper slide carriages in dotted lines and solid lines respectively indicate the two extreme positions of the upper slide carriage, and the single-way arrows indicate the direction of the force applied by the upper spring;
FIG. 4 is a schematic perspective view of the connection between the elastic slider body and the short rod body;
FIG. 5 is a schematic structural view of the connection between the elastic slider body and the short rod body;
FIG. 6 is a schematic side view of the connection between the elastic sliding block and the short rod;
FIG. 7 is a schematic view of a first perspective structure of the connection relationship between the driving rod, the rotating wheel and two water wings;
FIG. 8 is a second perspective view of the connection between the drive link, the runner, and the two foil members;
FIG. 9 is a schematic structural diagram of an oscillating hydrofoil type tidal current energy power generation structure according to one embodiment;
fig. 10 is a perspective view of the water wing.
In the figure, 1-vertical plate; 2-a transmission rod; 2-1-long rod body; 2-2-middle rod body; 2-3-short rod body; 2-4-first shaft body; 2-5-second shaft; 2-6-third shaft body; 2-7-fourth shaft; 3-rotating wheel; 4-an elastic slider body; 4-1-upper slide; 4-2-straight optical axis; 4-3-sliding block; 4-4-lower slide; 4-5-spring up; 4-6-lower spring; 5-water wing panel; 6-a first arc-shaped slideway; 7-a second arc-shaped slideway; 8-a fifth shaft body; 9-connecting hole; 10-inner hole.
The specific implementation mode is as follows:
in order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.
The first embodiment is as follows: as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, the present embodiment adopts the following technical solution, and includes a vertical plate 1, a transmission rod 2, a rotating wheel 3, an elastic slider body 4 and two water wing pieces 5, wherein the vertical plate 1 is vertically disposed, the transmission rod 2, the rotating wheel 3 and the elastic slider body 4 are all disposed on the same side of the vertical plate 1, the elastic slider body 4 is in sliding fit with the vertical plate 1, and the rotating wheel 3 is disposed below the elastic slider body 4;
the transmission rod 2 comprises a long rod body 2-1, a middle rod body 2-2, a short rod body 2-3, a first shaft body 2-4, a second shaft body 2-5, a third shaft body 2-6 and a fourth shaft body 2-7, wherein one end of the long rod body 2-1 is hinged with two water wing plates 5, the long rod body 2-1 is hinged with a vertical plate 1 through the first shaft body 2-4, the other end of the long rod body 2-1 is hinged with one end of the middle rod body 2-2 through the second shaft body 2-5, the third shaft body 2-6 sequentially penetrates through the other end of the middle rod body 2-2 and one end of the short rod body 2-3 and then is arranged on the outer side face of the rotating wheel 3, the other end of the short rod body 2-3 is hinged with the elastic sliding block body 4 through the fourth shaft body 2-7, the distance between the wheel center of the rotating wheel 3 and the axle center of the fourth shaft body 2-7, the distance between the wheel center of the rotating wheel 3 and the second shaft body 2-5 and the distance between the wheel center of the rotating wheel 3 and the first shaft body 2-4 are sequentially decreased progressively.
Furthermore, the up-down heave stroke of the hydrofoil piece 5 is two times of chord length, the ratio of the distance between the shaft body of the hydrofoil piece 5 and the first shaft body 2-4 to the distance between the first shaft body and the second shaft body is 5:1, the specific size of the hydrofoil piece is specifically determined according to sea conditions and structural body installation space limitations, the eccentricity of a pin shaft positioning hole machined in the runner 3 is 0.4 times of chord length, and the length of the middle rod body 2-2 is determined according to the size relation. According to the geometrical relationship, the stroke of the sliding block 4-3 is 0.8 times of chord length, and under the condition of meeting the minimum moment required for overcoming dead points, the length ratio of the short rod body 2-3 to the middle rod body 2-2 is 3:2, so that the overall size of the structure body is reduced and the power generation efficiency of the structure body is improved.
Further, the chord length is a straight distance D between a leading edge point and a trailing edge point on the hydrofoil 5.
Further, the specific size of the hydrofoil panel 5 is determined according to the sea state and the space limit of the installation and arrangement of the structural body, the whole dead point-free oscillation process of the two hydrofoil panels 5 can be realized by matching the vertical plate 1, the transmission rod 2, the runner 3 and the elastic sliding block body 4, the specific size requirement is that the heave motion amplitude of the hydrofoil panel 5 is twice the chord length, the runner 3 is selected from a standard component library, the ratio of the distance between the shaft body of the hydrofoil panel 5 and the first shaft body 2-4 to the distance between the first shaft body and the second shaft body is approximately equal to the ratio of the hydrofoil motion amplitude to the diameter of the runner 3, the specific size is determined by rounding on the basis, the ratio of the distance between the shaft body of the hydrofoil panel 5 and the first shaft body 2-4 to the distance between the first shaft body 2-4 and the second shaft body 2-5 is approximately equal to the ratio of the hydrofoil motion amplitude to the diameter of the runner 3, and is 5:2. according to the proportion, the heave motion of the hydrofoil 5 with twice chord length enables the motion stroke of the second shaft body 2-5 to be 0.8D, and the eccentricity of the pin shaft positioning hole on the rotating wheel 3 is half of the motion amplitude of the second shaft body 2-5, namely 0.4D. The length of the short rod body 2-3 is the sum of the length of the sliding seat, the eccentric distance of two times, the minimum installation distance of parts, the installation length of the sliding block 4-3 and the minimum length of the upper spring 4-5, the specific size is determined by rounding, and the length ratio of the short rod body to the middle rod body is 3:2.
Further, when the mechanism moves to a dead point position, the upper spring 4-5 and the short rod 2-3 are not collinear, an included angle is formed between the short rod 2-3 and the axis of the upper spring 4-5, the elastic force of the upper spring 4-5 transmits a component force to the short rod 2-3 under the included angle, the component force is not collinear with the axis of the rotating wheel 3, namely, the rotating wheel 3 and the axis of the short rod 2-3 have an eccentric distance, and the upper spring 4-5 applies a moment to the rotating wheel 3 through the eccentric distance.
In the embodiment, the first shaft body 2-4, the second shaft body 2-5, the third shaft body 2-6 and the fourth shaft body 2-7 are all pin shafts.
The second embodiment is as follows: the elastic sliding block body 4 comprises an upper sliding seat 4-1, a linear optical axis 4-2, a sliding block 4-3, a lower sliding seat 4-4, an upper spring 4-5 and a lower spring 4-6, wherein the upper sliding seat 4-1 and the lower sliding seat 4-4 are sequentially arranged on the side surface of the vertical plate 1 from top to bottom, the linear optical axis 4-2 is arranged between the upper sliding seat 4-1 and the lower sliding seat 4-4, the sliding block 4-3 is sleeved on the linear optical axis 4-2 and reciprocates along the length direction of the linear optical axis 4-2, the upper spring 4-5 is sleeved on the linear optical axis 4-2 and is positioned between the upper sliding seat 4-1 and the sliding block 4-3, and the lower spring 4-6 is sleeved on the linear optical axis 4-2 and is positioned between the lower sliding seat 4-4 and the sliding block 4-3.
The third concrete implementation mode: the first or second embodiment further defines that a first arc-shaped slideway 6 matched with the upper sliding seat 4-1 is processed on the side surface of the vertical plate 1, and a second arc-shaped slideway 7 matched with the lower sliding seat 4-4 is processed on the side surface of the vertical plate 1.
In the embodiment, the moment for overcoming the dead point is adjustable, and the sliding fit relationship between the elastic sliding block body 4 and the vertical plate 1 is that the upper sliding seat 4-1 is installed in a first arc-shaped slideway 6 of the vertical plate 1 through a plurality of first bolts, and the lower sliding seat 4-4 is installed in a second arc-shaped slideway 7 of the vertical plate 1 through a plurality of second bolts.
In the embodiment, the position of the upper sliding seat 4-1 is changed by adjusting the tightening positions of the first bolts in the first arc-shaped slide ways 6, so that the size of an included angle between the linear optical axis 4-2 and the vertical direction of the short rod body 2-3 is changed, the included angle between the limit position of the elastic sliding block body 4 and the limit position of the transmission rod 2 is controlled, and the stroke of the sliding block 4-3 and the compression amount of the upper spring 4-5 or the lower spring 4-6 are changed.
In the embodiment, the maximum compression amount adjusting range of the upper spring 4-5 is 12-20 mm, and the maximum compression amount adjusting range of the upper spring 4-5 is the same as the maximum compression amount adjusting range of the lower spring 4-6, so that the torque generated by the elastic sliding block body 4 at the dead point position is adjusted, the rotating speed and the resistance of the rotating wheel 3 are adapted to different values, and the mechanical efficiency of the invention is improved.
In this embodiment, the first arc-shaped slide way 6 is an arc-shaped long hole, and the second arc-shaped slide way 7 is an arc-shaped long hole, which are coaxially arranged.
The fourth concrete implementation mode: the present embodiment is further limited to the first, second, or third embodiment, the central angles corresponding to the first arc-shaped slideway 6 and the second arc-shaped slideway 7 are equal, and the central angle corresponding to the first arc-shaped slideway 6 is less than or equal to 15 degrees.
The fifth concrete implementation mode is as follows: the embodiment is further limited by the first, second, third or fourth embodiment, and the length ratio of the long rod body 2-1, the middle rod body 2-2 and the short rod body 2-3 is 9.
The length of the long rod body 2-1, the length of the middle rod body 2-2 and the length of the short rod body 2-3 in the embodiment are set according to a rule that the sizes of the long rod body 2-1, the middle rod body 2-2 and the short rod body 2-3 are reduced to the maximum extent on the premise of ensuring the requirement of the heave motion amplitude of the water wing 5 so as to reduce the cost and improve the power generation efficiency, and the optimal length ratio of the long rod body 2-1, the middle rod body 2-2 and the short rod body 2-3 is 9 by calculation and relevant experimental verification.
The sixth specific implementation mode: the embodiment is further limited by the first, second, third, fourth or fifth embodiment, a connecting hole 9 is processed at one end of the long rod body 2-1, a fifth shaft body 8 penetrates through the connecting hole 9, and two ends of the fifth shaft body 8 are respectively connected with a water wing piece 5.
The seventh embodiment: the present embodiment is further limited to the first, second, third, fourth, fifth or sixth embodiments, in which the longitudinal section of the hydrofoil piece 5 is in a shape of a willow leaf, one side of the hydrofoil piece 5 is a wide head side, the other side of the hydrofoil piece 5 is a narrow head side, an inner hole 10 matched with the fifth shaft body 8 is processed in the hydrofoil piece 5 along the length direction of the hydrofoil piece, and the inner hole 10 is disposed near the wide head side of the hydrofoil piece 5.
The specific implementation mode is eight: the embodiment is further limited by the first, second, third, fourth, fifth or sixth specific embodiments, one end of the first shaft body 2-4 facing the vertical plate 1 is a threaded end, a threaded hole matched with the first shaft body 2-4 is processed on the vertical plate 1, and the other end of the first shaft body 2-4 matched with the long rod body 2-1 is a hinged end. The distance between the transmission rod 2 and the vertical plate 1 can be adjusted by matching the threaded end of the first shaft body 2-4 with the vertical plate 1.
The vertical plate 1, the transmission rod 2, the rotating wheel 3, the elastic sliding block body 4 and the two water wing pieces 5 are all made of materials with strong corrosion resistance, and other water-involved parts are all made of antirust materials such as plastics, stainless steel and the like.
The upper sliding seat 4-1 and the lower sliding seat 4-4 have the same structure, preferably the existing bearing support is adopted, the position of the upper sliding seat 4-1 can be adjusted by loosening the first bolt, and similarly, the position of the upper sliding seat 4-1 can be adjusted by loosening the second bolt, so that the angle between the linear optical axis 4-2 and the vertical direction can be changed by changing the positions of the upper sliding seat 4-1 and the lower sliding seat 4-4, and the adjustment range is 30-45 degrees, so that the invention can adapt to different working loads. The upper end of a linear optical axis 4-2 is fixed to a first arc-shaped slide way 6 through a plurality of first bolts on an upper slide seat 4-1, the lower end of the linear optical axis 4-2 is fixed to a second arc-shaped slide way 7 through a plurality of second bolts on a lower slide seat 4-4, the linear optical axis 4-2 is arranged between the upper slide seat 4-1 and the lower slide seat 4-4, the linear optical axis 4-2 can be finely adjusted along the length direction of the first arc-shaped slide way 6 or the second arc-shaped slide way 7 under the driving of the upper slide seat 4-1 and the lower slide seat 4-4, the slide block 4-3 is a linear bearing, the slide block 4-3 is sleeved on the linear optical axis 4-2, and the slide block 4-3 slides in a reciprocating manner along the length direction of the linear optical axis 4-2, so that the self multi-degree of freedom motion form of the elastic slide block body 4 is realized.
The upper spring 4-5 and the lower spring 4-6 provide reciprocating return elastic force for the sliding block 4-3, the upper end of the upper spring 4-5 is connected with the upper sliding seat 4-1, and the lower end of the lower spring 4-6 is connected with the lower sliding seat 4-4, so that stable return elastic force is provided for the sliding block 4-3 to slide in a reciprocating mode along the length direction of the linear optical axis 4-2.
The following process is explained in conjunction with fig. 1 to 3:
when the central rod body 2-2 moves to the limit position of the upper spring 4-5, the moment provided by the hydrofoil 5 can enable the rotating wheel 3 to rotate clockwise, so that the limit position of the upper spring 4-5 is passed. After the upper spring 4-5 is beyond the limit compression limit position, the upper spring 4-5 enters a release stroke and still can provide elastic force. As shown in fig. 2, when the central rod 2-2 is at the top dead center position, the hydrofoil 5 is parallel to the bottom surface of the vertical plate 1 and kept horizontal, and at this time, the hydrofoil 5 cannot provide the torque required for starting the present invention. But the upper spring 4-5 is in a compressed state at this time, and because an angle difference exists between the linear optical axis 4-2 and the middle rod body 2-2, the action line of the upper spring 4-5 does not pass through the center of the rotating wheel 3 at this time, so that the elastic force generated by the upper spring 4-5 can apply a torque to the rotating wheel 3 through the short rod body 2-3, and the rotating wheel 3 rotates clockwise to pass through the top dead center position.
When the runner 3 rotates for at least 5 degrees, the invention can generate lift force only by the hydrofoil with an angle according to the relevant theory, and the hydrofoil can generate an attack angle when the runner 3 rotates for 5 degrees by combining the consideration of the tolerance and the installation error of parts. Through test verification, the force provided by the upper spring 4-5 or the lower spring 4-6 can rotate the rotating wheel 3 at least 10 degrees, so that the water wing piece 5 generates an attack angle to drive the rotating wheel 3 to continuously rotate.
Referring to fig. 5, when the middle rod 2-2 is located at the bottom dead center position, the lower compression spring 4-6 of the elastic sliding block 4 is in a compressed state, and applies a clockwise torque to the rotating wheel 3 through the short rod 2-3, so as to drive the rotating wheel 3 to rotate clockwise through the bottom dead center position. According to the analysis, the invention can overcome the dead point position in the hydrofoil transmission device, stably convert the heave motion of the hydrofoil into the unidirectional rotary motion of the rotating wheel 3 and realize the self-starting of the hydrofoil power generation device.
In the invention, under the condition that the rotating wheel 3 continuously moves, the angle nodes of each state of the upper springs 4-5 and the lower springs 4-6 are as follows:
The relevant parameters of the upper springs 4-5 of the invention are as follows:
watch two
The above-mentioned contents are the same as the related parameter setting form of the lower spring 4-6, and the data and the dimensional relationship of the vertical plate 1, the transmission rod 2, the rotating wheel 3 and the elastic sliding block body 4 are matched, so as to ensure that the oscillation process of the two water wing pieces 5 without dead points in the whole course is smoothly carried out.
The following embodiments are described in conjunction with the advantageous effects of the present invention:
the first embodiment is as follows: referring to fig. 9, under the condition of a water flow speed of 2m/s, a heave movement period of the water wing piece 5 is 1s, the upper spring 4-5 and the lower spring 4-6 are both selected to be springs with a wire diameter of 1mm, a middle diameter of 10mm and a number of turns of 8.5, in the embodiment, the upper spring 4-5 is installed at 30 degrees and is at an upper limit position, and according to the geometric position of each part, the compression amount of the upper spring 4-5, an elastic force direction included angle a generated by the short rod 2-3 and the upper spring 4-5 at the upper dead center position and an acting force eccentricity are measured. According to the parameters of the upper spring 4-5 selected in the example, the elastic force approximately equals to 25N through calculation of an elastic force calculation formula of the upper spring 4-5, the spring force is converted into the component force in the direction of the transmission rod 2 according to the angle relation, and the moment which can be provided by the upper spring 4-5 can be obtained through the product of the component force and the eccentricity, namely the moment range provided by the dead point position is 241.45-355.9 N.mm.
In this embodiment, the angle a between the short rod 2-3 and the upper spring 4-5 is preferably 5.36 degrees, and the eccentricity of the acting force is the linear distance between the third shaft 2-6 and the center point of the rotating wheel 3, and is 14.46mm. The first arrow direction of fig. 9 from top to bottom indicates the direction of the spring force of the upper spring 4-5, and the second arrow direction indicates the direction of the force applied by the upper spring 4-5 through the elastic slider body 4.
Example two: because the hydrofoil 5 moves passively, when the water flow speed is about 1m/s, the heave movement period of the hydrofoil 5 is longer than that in the first embodiment. Therefore, the maximum rotating speed of the rotating wheel 3 is lower than the relevant value of the first example, and the maximum generating efficiency can be obtained only by selecting the generator with smaller rated rotating speed. The rated torque increases when the rated speed of the motor is low, so that the resistance torque to be overcome by the invention at the dead point position is increased. When the moment provided by the upper spring 4-5 device is not enough to enable the runner 3 to pass through a dead point when the upper spring 4-5 device is positioned at 30 degrees, the moment provided by the elastic sliding block body 4 is increased by adjusting the installation positions of the upper sliding seat 4-1 and the lower sliding seat 4-4, so that the structural body can adapt to different sea conditions and working loads.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A no-dead-point oscillating hydrofoil type tidal current energy power generation structure is characterized in that: the vertical plate (1) is vertically arranged, the transmission rod (2), the rotating wheel (3) and the elastic sliding block body (4) are arranged on the same side face of the vertical plate (1), the elastic sliding block body (4) is in sliding fit with the vertical plate (1), and the rotating wheel (3) is arranged below the elastic sliding block body (4);
the transmission rod (2) comprises a long rod body (2-1), a middle rod body (2-2), a short rod body (2-3), a first shaft body (2-4), a second shaft body (2-5), a third shaft body (2-6) and a fourth shaft body (2-7), one end of the long rod body (2-1) is hinged with two water wing plates (5), the long rod body (2-1) is hinged with a vertical plate (1) through the first shaft body (2-4), the other end of the long rod body (2-1) is hinged with one end of the middle rod body (2-2) through the second shaft body (2-5), the third shaft body (2-6) sequentially penetrates through the other end of the middle rod body (2-2) and one end of the short rod body (2-3) and then is arranged on the outer side face of the rotating wheel (3), the other end of the short rod body (2-3) is hinged with the elastic sliding block body (4) through the fourth shaft body (2-7), and the distance between the center of the rotating wheel (3) and the center of the second shaft body (2-7) is gradually reduced to the distance between the center of the rotating wheel (2-3) and the axis of the second shaft body (2-7);
the elastic sliding block body (4) comprises an upper sliding seat (4-1), a linear optical axis (4-2), a sliding block (4-3), a lower sliding seat (4-4), an upper spring (4-5) and a lower spring (4-6), the upper sliding seat (4-1) and the lower sliding seat (4-4) are sequentially arranged on the side face of the vertical plate (1) from top to bottom, the linear optical axis (4-2) is arranged between the upper sliding seat (4-1) and the lower sliding seat (4-4), the sliding block (4-3) is sleeved on the linear optical axis (4-2) and reciprocates along the length direction of the linear optical axis (4-2), the upper spring (4-5) is sleeved on the linear optical axis (4-2) and is positioned between the upper sliding seat (4-1) and the sliding block (4-3), and the lower spring (4-6) is sleeved on the linear optical axis (4-2) and is positioned between the lower sliding seat (4-4) and the sliding block (4-3);
the eccentricity of the pin shaft positioning hole processed on the rotating wheel (3) is 0.4 times of chord length, the stroke of the sliding block (4-3) is 0.8 times of chord length, and the length ratio of the short rod body (2-3) to the middle rod body (2-2) is 3:2; the chord length is the straight-line distance D between the upper front edge point and the rear edge point of the hydrofoil piece (5), the whole-course dead-point-free oscillation process of the two hydrofoil pieces (5) can be realized by matching the vertical plate (1), the transmission rod (2), the rotating wheel (3) and the elastic sliding block body (4), the specific size requirement is that the heave motion amplitude of the hydrofoil piece (5) is two times of the chord length, the ratio of the distance between the shaft body of the hydrofoil piece (5) and the first shaft body (2-4) to the distance between the first shaft body and the second shaft body is equal to the ratio of the hydrofoil motion amplitude to the diameter of the rotating wheel (3), the ratio of the distance between the shaft body of the hydrofoil piece (5) and the first shaft body (2-4) to the second shaft body (2-5) is equal to the ratio of the hydrofoil motion amplitude to the diameter of the rotating wheel (3) is 5:2, according to the proportion, the heave motion of twice chord length of the hydrofoil (5) enables the motion stroke of the second shaft body (2-5) to be 0.8D, the eccentricity of a pin shaft positioning hole on the rotating wheel (3) is half of the motion amplitude of the second shaft body (2-5), namely 0.4D, the length of the short rod body (2-3) is equal to the length of a sliding seat, twice eccentricity, the minimum installation distance of parts, the installation length of a sliding block (4-3) and the sum of the minimum lengths of the upper springs (4-5), the length ratio of the short rod body to the middle rod body is 3:2, when the mechanism moves to a dead point position, the upper springs (4-5) are not collinear with the short rods (2-3), an included angle is formed between the short rods (2-3) and the axis of the upper springs (4-5), the elastic force of the upper springs (4-5) transmits a component force to the short rods (2-3) under the included angle, and the component force is not collinear with the axis of the rotating wheel (3), namely, the rotating wheel body (3) and the eccentric moment is applied to the rotating wheel (3) through the eccentric distance (4-5).
2. The oscillating hydrofoil tidal current energy power generation structure without dead spots of claim 1, wherein: a first arc-shaped slideway (6) matched with the upper sliding seat (4-1) is processed on the side surface of the vertical plate (1), and a second arc-shaped slideway (7) matched with the lower sliding seat (4-4) is processed on the side surface of the vertical plate (1).
3. The oscillating hydrofoil tidal current energy power generation structure without dead spots of claim 2, wherein: the central angles corresponding to the first arc-shaped slide way (6) and the second arc-shaped slide way (7) are equal, and the central angle corresponding to the first arc-shaped slide way (6) is smaller than or equal to 15 degrees.
4. The oscillating hydrofoil tidal power generation structure without dead spots according to any one of claims 1 to 3, wherein: the length ratio of the long rod body (2-1), the middle rod body (2-2) and the short rod body (2-3) is 9.
5. The oscillating hydrofoil tidal current energy power generation structure without dead spots of claim 1, wherein: one end of the long rod body (2-1) is processed with a connecting hole (9), a fifth shaft body (8) penetrates through the connecting hole (9), and two ends of the fifth shaft body (8) are respectively connected with a water wing piece (5).
6. The oscillating hydrofoil tidal current energy generation structure without dead spots according to claim 5, wherein: the longitudinal section of each hydrofoil piece (5) is in a willow leaf shape, one side of each hydrofoil piece (5) is a wide-head side, the other side of each hydrofoil piece (5) is a narrow-head side, an inner hole (10) matched with the fifth shaft body (8) is machined in each hydrofoil piece (5) along the length direction of each hydrofoil piece, and the inner hole (10) is arranged close to the wide-head side of each hydrofoil piece (5).
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