CN1170084A - Buoy for wave power-generation with shrinkable and extendable - Google Patents
Buoy for wave power-generation with shrinkable and extendable Download PDFInfo
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- CN1170084A CN1170084A CN96119107A CN96119107A CN1170084A CN 1170084 A CN1170084 A CN 1170084A CN 96119107 A CN96119107 A CN 96119107A CN 96119107 A CN96119107 A CN 96119107A CN 1170084 A CN1170084 A CN 1170084A
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- horizontal transverse
- transverse tube
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- buoy
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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
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Abstract
A buoy for hydroelectric wave generation includes L-shaped back elbow pipe composed of vertical and horizontal pipes and float chamber installed on the top of the horizontal pipe, which is a reduced one, that is, the cross-sections of the front end of horizontal pipe and the vertical pipe are less than that of the back end of horizontal pipe. The back end of horizontal pipe extends to outside of float chamber end, which greatly lowers and balances the weight offset caused by bertical pipe. Proper design can omit the counterweight of buoy, which decreases cost and increase wave transform efficiency.
Description
The invention belongs to the architecture advances of buoy float in the back elbow buoy apparatus for generating electricity by wave force.
The back elbow buoy for wave power-generation is the novel buoy apparatus for generating electricity by wave force that occurs in recent years, so-called back elbow buoy for wave power-generation, comprise by a vertical tube is vertically curved backward and connect a horizontal transverse tube and constitute L type back elbow, riser upper portions forms air chamber, the end face of vertical tube has the mount inlet of wave power generation unit, the rear end of horizontal transverse tube is the opening of back elbow, at the end face of horizontal transverse tube one cylindricality floating chamber is set.The back elbow buoy for wave power-generation has higher wave energy conversion efficiency, it can be as shipbuilding, finish manufacturing and installation at shipyard, towage is to using point then, anchoring is come into operation, the domestic and international so far back elbow buoy of researching and developing, no matter be single trunk type, two trunk types, cylindrical floating chamber shape, circle floating chamber type behind the place ahead, transverse axis semicircle floating chamber type, their back elbow sectional area is invariable, and the back elbow after-opening just in time is in the back end of floating chamber, they structurally have a very big shortcoming, promptly because the vertical tube of back elbow partly is attached to front end outside, floating chamber, vertical tube causes the very big moment that lays particular stress on, and form balance by additional bob-weight, counterweight accounts for the 25-30% of gross weight usually, and big counterweight increases cost.For being applied to the shallow water microwave, the small-sized back elbow buoy for wave power-generation in short-period wave condition waters particularly, because it is big that vertical tube is partly laid particular stress on moment, the requirement counterweight is big; the weight of buoy can subtract; be difficult to coincide the period of wave that its response cycle and this waters are often occurred, and influences the raising of wave conversion efficiency.
The objective of the invention is at the problems referred to above, propose a kind of energy and reduce the new design that moment obtains the back elbow buoy for wave power-generation of balance of laying particular stress on that can make vertical tube so that fully phase out additional bob-weight.
The object of the present invention is achieved like this, the horizontal transverse tube of back elbow is designed to the collapsible tube of its front end mouth of pipe cross section less than mouth of pipe cross section, its rear end, promptly by certain contraction ratio, the mouth of pipe reduced cross-sectional of the horizontal transverse tube front end of back elbow is arrived suitable yardstick, and the mouth of pipe cross section of horizontal transverse tube front end is identical with the mouth of pipe cross section of vertical tube, and smooth-going connection, the mouth of pipe cross section that makes vertical tube is also less than the mouth of pipe cross section of horizontal transverse tube rear end, simultaneously, the rear end of horizontal transverse tube has the section of extending back to extend to outside the back end of floating chamber.
The mouth of pipe cross section of back elbow can be square, rectangular, semicircle or circular, and its horizontal transverse tube can be the collapsible tube of continuous telescopic type, but general design mix segmentation collapsible tube.Promptly by one section or two sections contraction section Guan Yuyi sections or two sections collapsible tubes that the uniform section straight tube is formed by connecting, said contraction section pipe, contraction at left and right directions is that symmetry is shunk, upper and lower to contraction can be that symmetry is shunk, also can be asymmetric contraction, its monolateral angle of throat α be generally in 6-36 ° scope.The segmented collapsible tube can be the two section type collapsible tube, also can be 3 stops or four-part form collapsible tube.The two section type collapsible tube is to connect one section contraction section pipe (being called contraction section) by one section prismatic pipe anyhow, and the pipe front end that can be connected to contraction section becomes the leading portion of horizontal transverse tube anyhow, and the pipe rear end that also can be connected to contraction section becomes the back segment of horizontal transverse tube anyhow; The 3 stops collapsible tube is connected through the less pipe anyhow (leading portion) in one section contraction section pipe (contraction section) and one section mouth of pipe cross section by the bigger pipe anyhow (back segment) in one section mouth of pipe cross section, the four-part form collapsible tube connects one section bigger pipe anyhow (stage casing) in mouth of pipe cross section by one section contraction back segment pipe and connects one section contraction stage casing pipe again, and then connects one section pipe anyhow (leading portion) composition that mouth of pipe cross section is less.The mouth of pipe cross section of above-mentioned said pipe anyhow is invariable in same section.
The front end mouth of pipe cross section of horizontal transverse tube of the present invention is designed definite according to buoy performance and structural requirement to the contraction ratio in mouth of pipe cross section, its rear end, be controlled at usually in the scope of 40-90%.
The length of the section of extending back of the said horizontal transverse tube of the present invention (exceeding end portion behind the floating chamber) can be horizontal transverse tube total length 10-40% really.
The present invention adopts and shrinks power and the efficient that the shape back elbow can be realized using the small bore air chamber, obtain the large-section air chamber, simultaneously because the long-pending minimizing of the leading portion partial cross section of the hard tubular portion of bend pipe and horizontal transverse tube, reduced and laid particular stress on, significantly reduced required additional bob-weight, reduced materials consumption, thereby reduced cost.In addition owing to stretch the shape back elbow after adopting, on the one hand effectively balance laying particular stress on of bend pipe vertical tube part, by appropriate design, even can fully phase out counterweight.On the other hand, can improve the wave energy conversion efficiency, enlarge the response cycle scope, make characteristic mild.Can also strengthen the weathercock effect of buoy, make buoy can very fast following sea to variation, adjust own orientation automatically, the raising electricity generation efficiency.
Below be drawing explanation of the present invention:
Figure 1A is the plan view of first embodiment of the invention (horizontal transverse tube is the four-part form collapsible tube in rectangle mouth of pipe cross section);
Figure 1B is the left view of Fig. 1;
Fig. 1 C is the plan view of Fig. 1;
Fig. 2 A is the plan view of second embodiment of the invention (horizontal transverse tube is the 3 stops collapsible tube in semicircle mouth of pipe cross section);
Fig. 2 B is the left view of Fig. 4;
Fig. 2 C is the plan view of Fig. 4;
Fig. 3 A is the plan view of third embodiment of the invention (horizontal transverse tube is the two section type collapsible tube in circular ports cross section);
Fig. 3 B is the left view of Fig. 7;
Fig. 3 C is the plan view of Fig. 7;
Fig. 4 is the NA-T characteristic curve comparison diagram of the present invention with the back elbow buoy of general design.
The CONSTRUCTED SPECIFICATION of the embodiment of the invention is described in detail in detail below in conjunction with accompanying drawing:
Embodiment one
Shown in Figure 1A, 1B, 1C, present embodiment has the L type back elbow that is made of vertical tube 1 and horizontal transverse tube, the cylindricality floating chamber 2 of garden shape (cross section) after the end face of horizontal transverse tube is provided with a place ahead, and the end face of vertical tube has the mount inlet 3 of wave power generation unit.Horizontal transverse tube is by shrinking back segment 4, anyhow manage (stage casing) 5, shrink stage casing 6 and manage (leading portion) 7 four sections anyhow and be formed by connecting, the mouth of pipe cross section of horizontal transverse tube is a rectangular, its contraction back segment 4 is ined succession and is managed stage casing 5 anyhow, the downside that shrinks back segment 4 by angle of throat α=18 ° monolateral be shrunk to horn-like, the height of its front end is 78% of a rear end height, but width is constant, pipe anyhow (stage casing) 5 with horizontal transverse tube joins then, anyhow pipe (stage casing) 5 and contraction stage casing 6 join, shrinking 6 left and right sides, stage casing all shrinks with angle of throat α=18 a ° symmetry, its front end width D 1 is 75% of a rear end width D 2, but height H is constant, shrink the stage casing then and horizontal transverse tube (leading portion) 7 joins, the cross section of horizontal transverse tube front end (managing 7 anyhow) is 58.5% to rear end (shrinking back segment 4 rear ends) the total contraction ratio in cross section, 7 vertical tube identical with its cross section 1 smooth-going connections of the leading portion of horizontal transverse tube.The contraction back segment 4 of the horizontal transverse tube of present embodiment and horizontal transverse tube stage casing 5 all extend to outside the back end of floating chamber 2 as the section of extending back.The length of its section of extending back accounts for 28% of horizontal transverse tube length overall, and floating chamber 2 then is arranged at the pipe anyhow (leading portion) 7 of horizontal transverse tube and shrinks the end face in stage casing 6, and (stage casing) 5 of pipe anyhow of the width of floating chamber and horizontal transverse tube is wide.
Embodiment two
Present embodiment is shown in Fig. 2 A, 2B, 2C.The horizontal transverse tube of its back elbow and the mouth of pipe cross section of vertical tube are semicircle, horizontal transverse tube comprises back segment straight tube 8,10 3 sections of contraction section pipe 9 and leading portion straight tubes, contraction section pipe 9 is semicircle and evenly shrinks, its angle of throat α is 11 °, making the front end and back end cross-sectional constriction ratio of horizontal transverse tube is 54%, the leading portion 10 of horizontal transverse tube, be connected with 1 isometrical slyness of vertical tube, the end face of vertical tube has the mount inlet 3 of wave power generation unit, at the contraction section 9 of horizontal transverse tube and the end face of leading portion 10 the cylindricality floating chamber 2 that cross section is a rectangle is set, the back segment 8 of horizontal transverse tube all extends to outside the back end of floating chamber 2 as the section of extending back, and the length of the section of extending back is 26% of horizontal transverse tube total length.
Embodiment three
Present embodiment such as Fig. 3 A, 3B, shown in the 3C, the horizontal transverse tube of its back elbow and the mouth of pipe cross section of vertical tube are circular, horizontal transverse tube is formed by connecting by contraction section pipe 11 and leading portion straight tube 12, contraction section pipe 11 shrinks symmetrically and evenly, its angle of throat α is 9 °, making the mouth of pipe cross-sectional constriction ratio of contraction section pipe 11 front end and back end is 50%, the leading portion pipe 12 of horizontal transverse tube is connected with the isometrical slyness of vertical tube, the end face of vertical tube 1 has the mount inlet 3 of wave power generation unit, at the leading portion straight tube 12 of horizontal transverse tube and the end face of part contraction section pipe 11 the cylindricality floating chamber 2 that cross section is a rectangle is set, the part of the contraction section pipe 11 of horizontal transverse tube extends to outside the back end of floating chamber 2 as the section of extending back, the length of the section of extending back is half of contraction section pipe 11 length, and accounts for 22% of horizontal transverse tube total length.
Accompanying drawing 4 is back elbow buoy NA (W)-T (S) the characteristic comparison diagram of the present invention with general design.Number in the figure A is the characteristic curve of the embodiment of the invention one, and B is the characteristic curve of general back elbow buoy.
Claims (6)
1, a kind of shrinkable and extendable back elbow buoy for wave power-generation, have by vertical tube (1) and become L shaped back elbow with the integral body that horizontal transverse tube constitutes, the horizontal transverse tube end face of back elbow is provided with a cylindricality floating chamber (2), the horizontal transverse tube that it is characterized in that said back elbow is the collapsible tube of its front end mouth of pipe cross section less than mouth of pipe cross section, its rear end, and the smooth-going connection identical of the front end mouth of pipe cross section of horizontal transverse tube with the mouth of pipe cross section of vertical tube (1), simultaneously, the rear end of horizontal transverse tube has the section of extending back to extend to outside the back end of floating chamber (2).
2,, it is characterized in that said horizontal transverse tube is connected to form the segmented collapsible tube by one section or two sections contraction section Guan Yuyi sections or two sections uniform section straight tubes by the described shrinkable and extendable back elbow of claim 1 buoy for wave power-generation.
3, by the described shrinkable and extendable back elbow of claim 2 buoy for wave power-generation, it is characterized in that said contraction section pipe is that symmetry is shunk in the contraction of left and right directions, contraction at above-below direction can be that symmetry is shunk, and also can be asymmetric contraction, and the monolateral angle of throat of contraction section pipe is 6-36 °
4, by the described shrinkable and extendable back elbow of claim 1 buoy for wave power-generation, the front end mouth of pipe cross section that it is characterized in that said horizontal transverse tube is 40-90% to the contraction ratio in mouth of pipe cross section, its rear end.
5, by claim 1 or 3 described shrinkable and extendable back elbow buoy for wave power-generation, it is characterized in that the segment length that extends back of said horizontal transverse tube is the 10-40% of horizontal transverse tube total length.
6, by claim 1 or 3 described shrinkable and extendable back elbow buoy for wave power-generation, the opening part that it is characterized in that the said horizontal transverse tube section of extending back is horn-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96119107A CN1074509C (en) | 1996-07-09 | 1996-07-09 | Buoy for wave power-generation with shrinkable and extendable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96119107A CN1074509C (en) | 1996-07-09 | 1996-07-09 | Buoy for wave power-generation with shrinkable and extendable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1170084A true CN1170084A (en) | 1998-01-14 |
| CN1074509C CN1074509C (en) | 2001-11-07 |
Family
ID=5125562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96119107A Expired - Fee Related CN1074509C (en) | 1996-07-09 | 1996-07-09 | Buoy for wave power-generation with shrinkable and extendable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074509C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895735A (en) * | 2015-05-19 | 2015-09-09 | 中国科学院广州能源研究所 | Whale-shaped wave power generation device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4661716A (en) * | 1985-02-22 | 1987-04-28 | Chu Chun T | Unlimited and continuous pneumatic generating system to be driven with the sea wave force |
| CN1100777A (en) * | 1993-09-24 | 1995-03-29 | 中国科学院广州能源研究所 | Back bend pipe wave power generation buoy with submerged body hung below |
| CN2182789Y (en) * | 1993-09-24 | 1994-11-16 | 中国科学院广州能源研究所 | Buoy for electricity generation by wave energy |
-
1996
- 1996-07-09 CN CN96119107A patent/CN1074509C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895735A (en) * | 2015-05-19 | 2015-09-09 | 中国科学院广州能源研究所 | Whale-shaped wave power generation device |
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| Publication number | Publication date |
|---|---|
| CN1074509C (en) | 2001-11-07 |
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